[FFmpeg-cvslog] vc1: Split the decoder in components
Luca Barbato
git at videolan.org
Wed Oct 8 22:05:39 CEST 2014
ffmpeg | branch: master | Luca Barbato <lu_zero at gentoo.org> | Wed Jul 16 20:18:20 2014 +0200| [04d14c9b68b03e8dbc6e3003c1ee06892dd32576] | committer: Luca Barbato
vc1: Split the decoder in components
Speed up the overall compilation time.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=04d14c9b68b03e8dbc6e3003c1ee06892dd32576
---
libavcodec/Makefile | 4 +-
libavcodec/vc1.h | 12 +
libavcodec/vc1_block.c | 3054 +++++++++++++++++++++++++
libavcodec/vc1_loopfilter.c | 353 +++
libavcodec/vc1_mc.c | 948 ++++++++
libavcodec/vc1_pred.c | 959 ++++++++
libavcodec/vc1_pred.h | 59 +
libavcodec/vc1data.h | 2 -
libavcodec/vc1dec.c | 5211 +------------------------------------------
9 files changed, 5392 insertions(+), 5210 deletions(-)
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 69b92b6..62e41b8 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -390,7 +390,9 @@ OBJS-$(CONFIG_V410_ENCODER) += v410enc.o
OBJS-$(CONFIG_V210X_DECODER) += v210x.o
OBJS-$(CONFIG_VB_DECODER) += vb.o
OBJS-$(CONFIG_VBLE_DECODER) += vble.o
-OBJS-$(CONFIG_VC1_DECODER) += vc1dec.o vc1.o vc1data.o vc1dsp.o \
+OBJS-$(CONFIG_VC1_DECODER) += vc1dec.o vc1_block.o vc1_loopfilter.o \
+ vc1_mc.o vc1_pred.o vc1.o vc1data.o \
+ vc1dsp.o \
msmpeg4dec.o msmpeg4.o msmpeg4data.o
OBJS-$(CONFIG_VCR1_DECODER) += vcr1.o
OBJS-$(CONFIG_VMDAUDIO_DECODER) += vmdaudio.o
diff --git a/libavcodec/vc1.h b/libavcodec/vc1.h
index 780344a..0c4958c 100644
--- a/libavcodec/vc1.h
+++ b/libavcodec/vc1.h
@@ -400,4 +400,16 @@ void ff_vc1_init_transposed_scantables(VC1Context *v);
int ff_vc1_decode_end(AVCodecContext *avctx);
void ff_vc1_decode_blocks(VC1Context *v);
+void ff_vc1_loop_filter_iblk(VC1Context *v, int pq);
+void ff_vc1_loop_filter_iblk_delayed(VC1Context *v, int pq);
+void ff_vc1_smooth_overlap_filter_iblk(VC1Context *v);
+void ff_vc1_apply_p_loop_filter(VC1Context *v);
+
+void ff_vc1_mc_1mv(VC1Context *v, int dir);
+void ff_vc1_mc_4mv_luma(VC1Context *v, int n, int dir, int avg);
+void ff_vc1_mc_4mv_chroma(VC1Context *v, int dir);
+void ff_vc1_mc_4mv_chroma4(VC1Context *v, int dir, int dir2, int avg);
+
+void ff_vc1_interp_mc(VC1Context *v);
+
#endif /* AVCODEC_VC1_H */
diff --git a/libavcodec/vc1_block.c b/libavcodec/vc1_block.c
new file mode 100644
index 0000000..acd5145
--- /dev/null
+++ b/libavcodec/vc1_block.c
@@ -0,0 +1,3054 @@
+/*
+ * VC-1 and WMV3 decoder
+ * Copyright (c) 2011 Mashiat Sarker Shakkhar
+ * Copyright (c) 2006-2007 Konstantin Shishkov
+ * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * VC-1 and WMV3 block decoding routines
+ */
+
+#include "avcodec.h"
+#include "mpegutils.h"
+#include "mpegvideo.h"
+#include "msmpeg4data.h"
+#include "unary.h"
+#include "vc1.h"
+#include "vc1_pred.h"
+#include "vc1acdata.h"
+#include "vc1data.h"
+
+#define MB_INTRA_VLC_BITS 9
+#define DC_VLC_BITS 9
+
+// offset tables for interlaced picture MVDATA decoding
+static const int offset_table1[9] = { 0, 1, 2, 4, 8, 16, 32, 64, 128 };
+static const int offset_table2[9] = { 0, 1, 3, 7, 15, 31, 63, 127, 255 };
+
+/***********************************************************************/
+/**
+ * @name VC-1 Bitplane decoding
+ * @see 8.7, p56
+ * @{
+ */
+
+/**
+ * Imode types
+ * @{
+ */
+enum Imode {
+ IMODE_RAW,
+ IMODE_NORM2,
+ IMODE_DIFF2,
+ IMODE_NORM6,
+ IMODE_DIFF6,
+ IMODE_ROWSKIP,
+ IMODE_COLSKIP
+};
+/** @} */ //imode defines
+
+static void init_block_index(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+ ff_init_block_index(s);
+ if (v->field_mode && !(v->second_field ^ v->tff)) {
+ s->dest[0] += s->current_picture_ptr->f->linesize[0];
+ s->dest[1] += s->current_picture_ptr->f->linesize[1];
+ s->dest[2] += s->current_picture_ptr->f->linesize[2];
+ }
+}
+
+/** @} */ //Bitplane group
+
+static void vc1_put_signed_blocks_clamped(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+ int topleft_mb_pos, top_mb_pos;
+ int stride_y, fieldtx = 0;
+ int v_dist;
+
+ /* The put pixels loop is always one MB row behind the decoding loop,
+ * because we can only put pixels when overlap filtering is done, and
+ * for filtering of the bottom edge of a MB, we need the next MB row
+ * present as well.
+ * Within the row, the put pixels loop is also one MB col behind the
+ * decoding loop. The reason for this is again, because for filtering
+ * of the right MB edge, we need the next MB present. */
+ if (!s->first_slice_line) {
+ if (s->mb_x) {
+ topleft_mb_pos = (s->mb_y - 1) * s->mb_stride + s->mb_x - 1;
+ if (v->fcm == ILACE_FRAME)
+ fieldtx = v->fieldtx_plane[topleft_mb_pos];
+ stride_y = s->linesize << fieldtx;
+ v_dist = (16 - fieldtx) >> (fieldtx == 0);
+ s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][0],
+ s->dest[0] - 16 * s->linesize - 16,
+ stride_y);
+ s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][1],
+ s->dest[0] - 16 * s->linesize - 8,
+ stride_y);
+ s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][2],
+ s->dest[0] - v_dist * s->linesize - 16,
+ stride_y);
+ s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][3],
+ s->dest[0] - v_dist * s->linesize - 8,
+ stride_y);
+ s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][4],
+ s->dest[1] - 8 * s->uvlinesize - 8,
+ s->uvlinesize);
+ s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][5],
+ s->dest[2] - 8 * s->uvlinesize - 8,
+ s->uvlinesize);
+ }
+ if (s->mb_x == s->mb_width - 1) {
+ top_mb_pos = (s->mb_y - 1) * s->mb_stride + s->mb_x;
+ if (v->fcm == ILACE_FRAME)
+ fieldtx = v->fieldtx_plane[top_mb_pos];
+ stride_y = s->linesize << fieldtx;
+ v_dist = fieldtx ? 15 : 8;
+ s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][0],
+ s->dest[0] - 16 * s->linesize,
+ stride_y);
+ s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][1],
+ s->dest[0] - 16 * s->linesize + 8,
+ stride_y);
+ s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][2],
+ s->dest[0] - v_dist * s->linesize,
+ stride_y);
+ s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][3],
+ s->dest[0] - v_dist * s->linesize + 8,
+ stride_y);
+ s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][4],
+ s->dest[1] - 8 * s->uvlinesize,
+ s->uvlinesize);
+ s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][5],
+ s->dest[2] - 8 * s->uvlinesize,
+ s->uvlinesize);
+ }
+ }
+
+#define inc_blk_idx(idx) do { \
+ idx++; \
+ if (idx >= v->n_allocated_blks) \
+ idx = 0; \
+ } while (0)
+
+ inc_blk_idx(v->topleft_blk_idx);
+ inc_blk_idx(v->top_blk_idx);
+ inc_blk_idx(v->left_blk_idx);
+ inc_blk_idx(v->cur_blk_idx);
+}
+
+/***********************************************************************/
+/**
+ * @name VC-1 Block-level functions
+ * @see 7.1.4, p91 and 8.1.1.7, p(1)04
+ * @{
+ */
+
+/**
+ * @def GET_MQUANT
+ * @brief Get macroblock-level quantizer scale
+ */
+#define GET_MQUANT() \
+ if (v->dquantfrm) { \
+ int edges = 0; \
+ if (v->dqprofile == DQPROFILE_ALL_MBS) { \
+ if (v->dqbilevel) { \
+ mquant = (get_bits1(gb)) ? v->altpq : v->pq; \
+ } else { \
+ mqdiff = get_bits(gb, 3); \
+ if (mqdiff != 7) \
+ mquant = v->pq + mqdiff; \
+ else \
+ mquant = get_bits(gb, 5); \
+ } \
+ } \
+ if (v->dqprofile == DQPROFILE_SINGLE_EDGE) \
+ edges = 1 << v->dqsbedge; \
+ else if (v->dqprofile == DQPROFILE_DOUBLE_EDGES) \
+ edges = (3 << v->dqsbedge) % 15; \
+ else if (v->dqprofile == DQPROFILE_FOUR_EDGES) \
+ edges = 15; \
+ if ((edges&1) && !s->mb_x) \
+ mquant = v->altpq; \
+ if ((edges&2) && s->first_slice_line) \
+ mquant = v->altpq; \
+ if ((edges&4) && s->mb_x == (s->mb_width - 1)) \
+ mquant = v->altpq; \
+ if ((edges&8) && s->mb_y == (s->mb_height - 1)) \
+ mquant = v->altpq; \
+ if (!mquant || mquant > 31) { \
+ av_log(v->s.avctx, AV_LOG_ERROR, \
+ "Overriding invalid mquant %d\n", mquant); \
+ mquant = 1; \
+ } \
+ }
+
+/**
+ * @def GET_MVDATA(_dmv_x, _dmv_y)
+ * @brief Get MV differentials
+ * @see MVDATA decoding from 8.3.5.2, p(1)20
+ * @param _dmv_x Horizontal differential for decoded MV
+ * @param _dmv_y Vertical differential for decoded MV
+ */
+#define GET_MVDATA(_dmv_x, _dmv_y) \
+ index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table, \
+ VC1_MV_DIFF_VLC_BITS, 2); \
+ if (index > 36) { \
+ mb_has_coeffs = 1; \
+ index -= 37; \
+ } else \
+ mb_has_coeffs = 0; \
+ s->mb_intra = 0; \
+ if (!index) { \
+ _dmv_x = _dmv_y = 0; \
+ } else if (index == 35) { \
+ _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \
+ _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \
+ } else if (index == 36) { \
+ _dmv_x = 0; \
+ _dmv_y = 0; \
+ s->mb_intra = 1; \
+ } else { \
+ index1 = index % 6; \
+ if (!s->quarter_sample && index1 == 5) val = 1; \
+ else val = 0; \
+ if (size_table[index1] - val > 0) \
+ val = get_bits(gb, size_table[index1] - val); \
+ else val = 0; \
+ sign = 0 - (val&1); \
+ _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
+ \
+ index1 = index / 6; \
+ if (!s->quarter_sample && index1 == 5) val = 1; \
+ else val = 0; \
+ if (size_table[index1] - val > 0) \
+ val = get_bits(gb, size_table[index1] - val); \
+ else val = 0; \
+ sign = 0 - (val & 1); \
+ _dmv_y = (sign ^ ((val >> 1) + offset_table[index1])) - sign; \
+ }
+
+static av_always_inline void get_mvdata_interlaced(VC1Context *v, int *dmv_x,
+ int *dmv_y, int *pred_flag)
+{
+ int index, index1;
+ int extend_x = 0, extend_y = 0;
+ GetBitContext *gb = &v->s.gb;
+ int bits, esc;
+ int val, sign;
+ const int* offs_tab;
+
+ if (v->numref) {
+ bits = VC1_2REF_MVDATA_VLC_BITS;
+ esc = 125;
+ } else {
+ bits = VC1_1REF_MVDATA_VLC_BITS;
+ esc = 71;
+ }
+ switch (v->dmvrange) {
+ case 1:
+ extend_x = 1;
+ break;
+ case 2:
+ extend_y = 1;
+ break;
+ case 3:
+ extend_x = extend_y = 1;
+ break;
+ }
+ index = get_vlc2(gb, v->imv_vlc->table, bits, 3);
+ if (index == esc) {
+ *dmv_x = get_bits(gb, v->k_x);
+ *dmv_y = get_bits(gb, v->k_y);
+ if (v->numref) {
+ if (pred_flag) {
+ *pred_flag = *dmv_y & 1;
+ *dmv_y = (*dmv_y + *pred_flag) >> 1;
+ } else {
+ *dmv_y = (*dmv_y + (*dmv_y & 1)) >> 1;
+ }
+ }
+ }
+ else {
+ if (extend_x)
+ offs_tab = offset_table2;
+ else
+ offs_tab = offset_table1;
+ index1 = (index + 1) % 9;
+ if (index1 != 0) {
+ val = get_bits(gb, index1 + extend_x);
+ sign = 0 -(val & 1);
+ *dmv_x = (sign ^ ((val >> 1) + offs_tab[index1])) - sign;
+ } else
+ *dmv_x = 0;
+ if (extend_y)
+ offs_tab = offset_table2;
+ else
+ offs_tab = offset_table1;
+ index1 = (index + 1) / 9;
+ if (index1 > v->numref) {
+ val = get_bits(gb, (index1 + (extend_y << v->numref)) >> v->numref);
+ sign = 0 - (val & 1);
+ *dmv_y = (sign ^ ((val >> 1) + offs_tab[index1 >> v->numref])) - sign;
+ } else
+ *dmv_y = 0;
+ if (v->numref && pred_flag)
+ *pred_flag = index1 & 1;
+ }
+}
+
+/** Reconstruct motion vector for B-frame and do motion compensation
+ */
+static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2],
+ int direct, int mode)
+{
+ if (direct) {
+ ff_vc1_mc_1mv(v, 0);
+ ff_vc1_interp_mc(v);
+ return;
+ }
+ if (mode == BMV_TYPE_INTERPOLATED) {
+ ff_vc1_mc_1mv(v, 0);
+ ff_vc1_interp_mc(v);
+ return;
+ }
+
+ ff_vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
+}
+
+/** Get predicted DC value for I-frames only
+ * prediction dir: left=0, top=1
+ * @param s MpegEncContext
+ * @param overlap flag indicating that overlap filtering is used
+ * @param pq integer part of picture quantizer
+ * @param[in] n block index in the current MB
+ * @param dc_val_ptr Pointer to DC predictor
+ * @param dir_ptr Prediction direction for use in AC prediction
+ */
+static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
+ int16_t **dc_val_ptr, int *dir_ptr)
+{
+ int a, b, c, wrap, pred, scale;
+ int16_t *dc_val;
+ static const uint16_t dcpred[32] = {
+ -1, 1024, 512, 341, 256, 205, 171, 146, 128,
+ 114, 102, 93, 85, 79, 73, 68, 64,
+ 60, 57, 54, 51, 49, 47, 45, 43,
+ 41, 39, 38, 37, 35, 34, 33
+ };
+
+ /* find prediction - wmv3_dc_scale always used here in fact */
+ if (n < 4) scale = s->y_dc_scale;
+ else scale = s->c_dc_scale;
+
+ wrap = s->block_wrap[n];
+ dc_val = s->dc_val[0] + s->block_index[n];
+
+ /* B A
+ * C X
+ */
+ c = dc_val[ - 1];
+ b = dc_val[ - 1 - wrap];
+ a = dc_val[ - wrap];
+
+ if (pq < 9 || !overlap) {
+ /* Set outer values */
+ if (s->first_slice_line && (n != 2 && n != 3))
+ b = a = dcpred[scale];
+ if (s->mb_x == 0 && (n != 1 && n != 3))
+ b = c = dcpred[scale];
+ } else {
+ /* Set outer values */
+ if (s->first_slice_line && (n != 2 && n != 3))
+ b = a = 0;
+ if (s->mb_x == 0 && (n != 1 && n != 3))
+ b = c = 0;
+ }
+
+ if (abs(a - b) <= abs(b - c)) {
+ pred = c;
+ *dir_ptr = 1; // left
+ } else {
+ pred = a;
+ *dir_ptr = 0; // top
+ }
+
+ /* update predictor */
+ *dc_val_ptr = &dc_val[0];
+ return pred;
+}
+
+
+/** Get predicted DC value
+ * prediction dir: left=0, top=1
+ * @param s MpegEncContext
+ * @param overlap flag indicating that overlap filtering is used
+ * @param pq integer part of picture quantizer
+ * @param[in] n block index in the current MB
+ * @param a_avail flag indicating top block availability
+ * @param c_avail flag indicating left block availability
+ * @param dc_val_ptr Pointer to DC predictor
+ * @param dir_ptr Prediction direction for use in AC prediction
+ */
+static inline int ff_vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
+ int a_avail, int c_avail,
+ int16_t **dc_val_ptr, int *dir_ptr)
+{
+ int a, b, c, wrap, pred;
+ int16_t *dc_val;
+ int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+ int q1, q2 = 0;
+ int dqscale_index;
+
+ wrap = s->block_wrap[n];
+ dc_val = s->dc_val[0] + s->block_index[n];
+
+ /* B A
+ * C X
+ */
+ c = dc_val[ - 1];
+ b = dc_val[ - 1 - wrap];
+ a = dc_val[ - wrap];
+ /* scale predictors if needed */
+ q1 = s->current_picture.qscale_table[mb_pos];
+ dqscale_index = s->y_dc_scale_table[q1] - 1;
+ if (dqscale_index < 0)
+ return 0;
+ if (c_avail && (n != 1 && n != 3)) {
+ q2 = s->current_picture.qscale_table[mb_pos - 1];
+ if (q2 && q2 != q1)
+ c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18;
+ }
+ if (a_avail && (n != 2 && n != 3)) {
+ q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
+ if (q2 && q2 != q1)
+ a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18;
+ }
+ if (a_avail && c_avail && (n != 3)) {
+ int off = mb_pos;
+ if (n != 1)
+ off--;
+ if (n != 2)
+ off -= s->mb_stride;
+ q2 = s->current_picture.qscale_table[off];
+ if (q2 && q2 != q1)
+ b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18;
+ }
+
+ if (a_avail && c_avail) {
+ if (abs(a - b) <= abs(b - c)) {
+ pred = c;
+ *dir_ptr = 1; // left
+ } else {
+ pred = a;
+ *dir_ptr = 0; // top
+ }
+ } else if (a_avail) {
+ pred = a;
+ *dir_ptr = 0; // top
+ } else if (c_avail) {
+ pred = c;
+ *dir_ptr = 1; // left
+ } else {
+ pred = 0;
+ *dir_ptr = 1; // left
+ }
+
+ /* update predictor */
+ *dc_val_ptr = &dc_val[0];
+ return pred;
+}
+
+/** @} */ // Block group
+
+/**
+ * @name VC1 Macroblock-level functions in Simple/Main Profiles
+ * @see 7.1.4, p91 and 8.1.1.7, p(1)04
+ * @{
+ */
+
+static inline int vc1_coded_block_pred(MpegEncContext * s, int n,
+ uint8_t **coded_block_ptr)
+{
+ int xy, wrap, pred, a, b, c;
+
+ xy = s->block_index[n];
+ wrap = s->b8_stride;
+
+ /* B C
+ * A X
+ */
+ a = s->coded_block[xy - 1 ];
+ b = s->coded_block[xy - 1 - wrap];
+ c = s->coded_block[xy - wrap];
+
+ if (b == c) {
+ pred = a;
+ } else {
+ pred = c;
+ }
+
+ /* store value */
+ *coded_block_ptr = &s->coded_block[xy];
+
+ return pred;
+}
+
+/**
+ * Decode one AC coefficient
+ * @param v The VC1 context
+ * @param last Last coefficient
+ * @param skip How much zero coefficients to skip
+ * @param value Decoded AC coefficient value
+ * @param codingset set of VLC to decode data
+ * @see 8.1.3.4
+ */
+static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip,
+ int *value, int codingset)
+{
+ GetBitContext *gb = &v->s.gb;
+ int index, escape, run = 0, level = 0, lst = 0;
+
+ index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
+ if (index != ff_vc1_ac_sizes[codingset] - 1) {
+ run = vc1_index_decode_table[codingset][index][0];
+ level = vc1_index_decode_table[codingset][index][1];
+ lst = index >= vc1_last_decode_table[codingset] || get_bits_left(gb) < 0;
+ if (get_bits1(gb))
+ level = -level;
+ } else {
+ escape = decode210(gb);
+ if (escape != 2) {
+ index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
+ run = vc1_index_decode_table[codingset][index][0];
+ level = vc1_index_decode_table[codingset][index][1];
+ lst = index >= vc1_last_decode_table[codingset];
+ if (escape == 0) {
+ if (lst)
+ level += vc1_last_delta_level_table[codingset][run];
+ else
+ level += vc1_delta_level_table[codingset][run];
+ } else {
+ if (lst)
+ run += vc1_last_delta_run_table[codingset][level] + 1;
+ else
+ run += vc1_delta_run_table[codingset][level] + 1;
+ }
+ if (get_bits1(gb))
+ level = -level;
+ } else {
+ int sign;
+ lst = get_bits1(gb);
+ if (v->s.esc3_level_length == 0) {
+ if (v->pq < 8 || v->dquantfrm) { // table 59
+ v->s.esc3_level_length = get_bits(gb, 3);
+ if (!v->s.esc3_level_length)
+ v->s.esc3_level_length = get_bits(gb, 2) + 8;
+ } else { // table 60
+ v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
+ }
+ v->s.esc3_run_length = 3 + get_bits(gb, 2);
+ }
+ run = get_bits(gb, v->s.esc3_run_length);
+ sign = get_bits1(gb);
+ level = get_bits(gb, v->s.esc3_level_length);
+ if (sign)
+ level = -level;
+ }
+ }
+
+ *last = lst;
+ *skip = run;
+ *value = level;
+}
+
+/** Decode intra block in intra frames - should be faster than decode_intra_block
+ * @param v VC1Context
+ * @param block block to decode
+ * @param[in] n subblock index
+ * @param coded are AC coeffs present or not
+ * @param codingset set of VLC to decode data
+ */
+static int vc1_decode_i_block(VC1Context *v, int16_t block[64], int n,
+ int coded, int codingset)
+{
+ GetBitContext *gb = &v->s.gb;
+ MpegEncContext *s = &v->s;
+ int dc_pred_dir = 0; /* Direction of the DC prediction used */
+ int i;
+ int16_t *dc_val;
+ int16_t *ac_val, *ac_val2;
+ int dcdiff;
+
+ /* Get DC differential */
+ if (n < 4) {
+ dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
+ } else {
+ dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
+ }
+ if (dcdiff < 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
+ return -1;
+ }
+ if (dcdiff) {
+ if (dcdiff == 119 /* ESC index value */) {
+ /* TODO: Optimize */
+ if (v->pq == 1) dcdiff = get_bits(gb, 10);
+ else if (v->pq == 2) dcdiff = get_bits(gb, 9);
+ else dcdiff = get_bits(gb, 8);
+ } else {
+ if (v->pq == 1)
+ dcdiff = (dcdiff << 2) + get_bits(gb, 2) - 3;
+ else if (v->pq == 2)
+ dcdiff = (dcdiff << 1) + get_bits1(gb) - 1;
+ }
+ if (get_bits1(gb))
+ dcdiff = -dcdiff;
+ }
+
+ /* Prediction */
+ dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
+ *dc_val = dcdiff;
+
+ /* Store the quantized DC coeff, used for prediction */
+ if (n < 4) {
+ block[0] = dcdiff * s->y_dc_scale;
+ } else {
+ block[0] = dcdiff * s->c_dc_scale;
+ }
+ /* Skip ? */
+ if (!coded) {
+ goto not_coded;
+ }
+
+ // AC Decoding
+ i = 1;
+
+ {
+ int last = 0, skip, value;
+ const uint8_t *zz_table;
+ int scale;
+ int k;
+
+ scale = v->pq * 2 + v->halfpq;
+
+ if (v->s.ac_pred) {
+ if (!dc_pred_dir)
+ zz_table = v->zz_8x8[2];
+ else
+ zz_table = v->zz_8x8[3];
+ } else
+ zz_table = v->zz_8x8[1];
+
+ ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
+ ac_val2 = ac_val;
+ if (dc_pred_dir) // left
+ ac_val -= 16;
+ else // top
+ ac_val -= 16 * s->block_wrap[n];
+
+ while (!last) {
+ vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
+ i += skip;
+ if (i > 63)
+ break;
+ block[zz_table[i++]] = value;
+ }
+
+ /* apply AC prediction if needed */
+ if (s->ac_pred) {
+ if (dc_pred_dir) { // left
+ for (k = 1; k < 8; k++)
+ block[k << v->left_blk_sh] += ac_val[k];
+ } else { // top
+ for (k = 1; k < 8; k++)
+ block[k << v->top_blk_sh] += ac_val[k + 8];
+ }
+ }
+ /* save AC coeffs for further prediction */
+ for (k = 1; k < 8; k++) {
+ ac_val2[k] = block[k << v->left_blk_sh];
+ ac_val2[k + 8] = block[k << v->top_blk_sh];
+ }
+
+ /* scale AC coeffs */
+ for (k = 1; k < 64; k++)
+ if (block[k]) {
+ block[k] *= scale;
+ if (!v->pquantizer)
+ block[k] += (block[k] < 0) ? -v->pq : v->pq;
+ }
+
+ if (s->ac_pred) i = 63;
+ }
+
+not_coded:
+ if (!coded) {
+ int k, scale;
+ ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
+ ac_val2 = ac_val;
+
+ i = 0;
+ scale = v->pq * 2 + v->halfpq;
+ memset(ac_val2, 0, 16 * 2);
+ if (dc_pred_dir) { // left
+ ac_val -= 16;
+ if (s->ac_pred)
+ memcpy(ac_val2, ac_val, 8 * 2);
+ } else { // top
+ ac_val -= 16 * s->block_wrap[n];
+ if (s->ac_pred)
+ memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
+ }
+
+ /* apply AC prediction if needed */
+ if (s->ac_pred) {
+ if (dc_pred_dir) { //left
+ for (k = 1; k < 8; k++) {
+ block[k << v->left_blk_sh] = ac_val[k] * scale;
+ if (!v->pquantizer && block[k << v->left_blk_sh])
+ block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -v->pq : v->pq;
+ }
+ } else { // top
+ for (k = 1; k < 8; k++) {
+ block[k << v->top_blk_sh] = ac_val[k + 8] * scale;
+ if (!v->pquantizer && block[k << v->top_blk_sh])
+ block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -v->pq : v->pq;
+ }
+ }
+ i = 63;
+ }
+ }
+ s->block_last_index[n] = i;
+
+ return 0;
+}
+
+/** Decode intra block in intra frames - should be faster than decode_intra_block
+ * @param v VC1Context
+ * @param block block to decode
+ * @param[in] n subblock number
+ * @param coded are AC coeffs present or not
+ * @param codingset set of VLC to decode data
+ * @param mquant quantizer value for this macroblock
+ */
+static int vc1_decode_i_block_adv(VC1Context *v, int16_t block[64], int n,
+ int coded, int codingset, int mquant)
+{
+ GetBitContext *gb = &v->s.gb;
+ MpegEncContext *s = &v->s;
+ int dc_pred_dir = 0; /* Direction of the DC prediction used */
+ int i;
+ int16_t *dc_val;
+ int16_t *ac_val, *ac_val2;
+ int dcdiff;
+ int a_avail = v->a_avail, c_avail = v->c_avail;
+ int use_pred = s->ac_pred;
+ int scale;
+ int q1, q2 = 0;
+ int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+
+ /* Get DC differential */
+ if (n < 4) {
+ dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
+ } else {
+ dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
+ }
+ if (dcdiff < 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
+ return -1;
+ }
+ if (dcdiff) {
+ if (dcdiff == 119 /* ESC index value */) {
+ /* TODO: Optimize */
+ if (mquant == 1) dcdiff = get_bits(gb, 10);
+ else if (mquant == 2) dcdiff = get_bits(gb, 9);
+ else dcdiff = get_bits(gb, 8);
+ } else {
+ if (mquant == 1)
+ dcdiff = (dcdiff << 2) + get_bits(gb, 2) - 3;
+ else if (mquant == 2)
+ dcdiff = (dcdiff << 1) + get_bits1(gb) - 1;
+ }
+ if (get_bits1(gb))
+ dcdiff = -dcdiff;
+ }
+
+ /* Prediction */
+ dcdiff += ff_vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
+ *dc_val = dcdiff;
+
+ /* Store the quantized DC coeff, used for prediction */
+ if (n < 4) {
+ block[0] = dcdiff * s->y_dc_scale;
+ } else {
+ block[0] = dcdiff * s->c_dc_scale;
+ }
+
+ //AC Decoding
+ i = 1;
+
+ /* check if AC is needed at all */
+ if (!a_avail && !c_avail)
+ use_pred = 0;
+ ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
+ ac_val2 = ac_val;
+
+ scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0);
+
+ if (dc_pred_dir) // left
+ ac_val -= 16;
+ else // top
+ ac_val -= 16 * s->block_wrap[n];
+
+ q1 = s->current_picture.qscale_table[mb_pos];
+ if ( dc_pred_dir && c_avail && mb_pos)
+ q2 = s->current_picture.qscale_table[mb_pos - 1];
+ if (!dc_pred_dir && a_avail && mb_pos >= s->mb_stride)
+ q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
+ if ( dc_pred_dir && n == 1)
+ q2 = q1;
+ if (!dc_pred_dir && n == 2)
+ q2 = q1;
+ if (n == 3)
+ q2 = q1;
+
+ if (coded) {
+ int last = 0, skip, value;
+ const uint8_t *zz_table;
+ int k;
+
+ if (v->s.ac_pred) {
+ if (!use_pred && v->fcm == ILACE_FRAME) {
+ zz_table = v->zzi_8x8;
+ } else {
+ if (!dc_pred_dir) // top
+ zz_table = v->zz_8x8[2];
+ else // left
+ zz_table = v->zz_8x8[3];
+ }
+ } else {
+ if (v->fcm != ILACE_FRAME)
+ zz_table = v->zz_8x8[1];
+ else
+ zz_table = v->zzi_8x8;
+ }
+
+ while (!last) {
+ vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
+ i += skip;
+ if (i > 63)
+ break;
+ block[zz_table[i++]] = value;
+ }
+
+ /* apply AC prediction if needed */
+ if (use_pred) {
+ /* scale predictors if needed*/
+ if (q2 && q1 != q2) {
+ q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+ q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
+
+ if (q1 < 1)
+ return AVERROR_INVALIDDATA;
+ if (dc_pred_dir) { // left
+ for (k = 1; k < 8; k++)
+ block[k << v->left_blk_sh] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+ } else { // top
+ for (k = 1; k < 8; k++)
+ block[k << v->top_blk_sh] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+ }
+ } else {
+ if (dc_pred_dir) { //left
+ for (k = 1; k < 8; k++)
+ block[k << v->left_blk_sh] += ac_val[k];
+ } else { //top
+ for (k = 1; k < 8; k++)
+ block[k << v->top_blk_sh] += ac_val[k + 8];
+ }
+ }
+ }
+ /* save AC coeffs for further prediction */
+ for (k = 1; k < 8; k++) {
+ ac_val2[k ] = block[k << v->left_blk_sh];
+ ac_val2[k + 8] = block[k << v->top_blk_sh];
+ }
+
+ /* scale AC coeffs */
+ for (k = 1; k < 64; k++)
+ if (block[k]) {
+ block[k] *= scale;
+ if (!v->pquantizer)
+ block[k] += (block[k] < 0) ? -mquant : mquant;
+ }
+
+ if (use_pred) i = 63;
+ } else { // no AC coeffs
+ int k;
+
+ memset(ac_val2, 0, 16 * 2);
+ if (dc_pred_dir) { // left
+ if (use_pred) {
+ memcpy(ac_val2, ac_val, 8 * 2);
+ if (q2 && q1 != q2) {
+ q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+ q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
+ if (q1 < 1)
+ return AVERROR_INVALIDDATA;
+ for (k = 1; k < 8; k++)
+ ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+ }
+ }
+ } else { // top
+ if (use_pred) {
+ memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
+ if (q2 && q1 != q2) {
+ q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+ q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
+ if (q1 < 1)
+ return AVERROR_INVALIDDATA;
+ for (k = 1; k < 8; k++)
+ ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+ }
+ }
+ }
+
+ /* apply AC prediction if needed */
+ if (use_pred) {
+ if (dc_pred_dir) { // left
+ for (k = 1; k < 8; k++) {
+ block[k << v->left_blk_sh] = ac_val2[k] * scale;
+ if (!v->pquantizer && block[k << v->left_blk_sh])
+ block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -mquant : mquant;
+ }
+ } else { // top
+ for (k = 1; k < 8; k++) {
+ block[k << v->top_blk_sh] = ac_val2[k + 8] * scale;
+ if (!v->pquantizer && block[k << v->top_blk_sh])
+ block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -mquant : mquant;
+ }
+ }
+ i = 63;
+ }
+ }
+ s->block_last_index[n] = i;
+
+ return 0;
+}
+
+/** Decode intra block in inter frames - more generic version than vc1_decode_i_block
+ * @param v VC1Context
+ * @param block block to decode
+ * @param[in] n subblock index
+ * @param coded are AC coeffs present or not
+ * @param mquant block quantizer
+ * @param codingset set of VLC to decode data
+ */
+static int vc1_decode_intra_block(VC1Context *v, int16_t block[64], int n,
+ int coded, int mquant, int codingset)
+{
+ GetBitContext *gb = &v->s.gb;
+ MpegEncContext *s = &v->s;
+ int dc_pred_dir = 0; /* Direction of the DC prediction used */
+ int i;
+ int16_t *dc_val;
+ int16_t *ac_val, *ac_val2;
+ int dcdiff;
+ int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+ int a_avail = v->a_avail, c_avail = v->c_avail;
+ int use_pred = s->ac_pred;
+ int scale;
+ int q1, q2 = 0;
+
+ s->bdsp.clear_block(block);
+
+ /* XXX: Guard against dumb values of mquant */
+ mquant = (mquant < 1) ? 0 : ((mquant > 31) ? 31 : mquant);
+
+ /* Set DC scale - y and c use the same */
+ s->y_dc_scale = s->y_dc_scale_table[mquant];
+ s->c_dc_scale = s->c_dc_scale_table[mquant];
+
+ /* Get DC differential */
+ if (n < 4) {
+ dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
+ } else {
+ dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
+ }
+ if (dcdiff < 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
+ return -1;
+ }
+ if (dcdiff) {
+ if (dcdiff == 119 /* ESC index value */) {
+ /* TODO: Optimize */
+ if (mquant == 1) dcdiff = get_bits(gb, 10);
+ else if (mquant == 2) dcdiff = get_bits(gb, 9);
+ else dcdiff = get_bits(gb, 8);
+ } else {
+ if (mquant == 1)
+ dcdiff = (dcdiff << 2) + get_bits(gb, 2) - 3;
+ else if (mquant == 2)
+ dcdiff = (dcdiff << 1) + get_bits1(gb) - 1;
+ }
+ if (get_bits1(gb))
+ dcdiff = -dcdiff;
+ }
+
+ /* Prediction */
+ dcdiff += ff_vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
+ *dc_val = dcdiff;
+
+ /* Store the quantized DC coeff, used for prediction */
+
+ if (n < 4) {
+ block[0] = dcdiff * s->y_dc_scale;
+ } else {
+ block[0] = dcdiff * s->c_dc_scale;
+ }
+
+ //AC Decoding
+ i = 1;
+
+ /* check if AC is needed at all and adjust direction if needed */
+ if (!a_avail) dc_pred_dir = 1;
+ if (!c_avail) dc_pred_dir = 0;
+ if (!a_avail && !c_avail) use_pred = 0;
+ ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
+ ac_val2 = ac_val;
+
+ scale = mquant * 2 + v->halfpq;
+
+ if (dc_pred_dir) //left
+ ac_val -= 16;
+ else //top
+ ac_val -= 16 * s->block_wrap[n];
+
+ q1 = s->current_picture.qscale_table[mb_pos];
+ if (dc_pred_dir && c_avail && mb_pos)
+ q2 = s->current_picture.qscale_table[mb_pos - 1];
+ if (!dc_pred_dir && a_avail && mb_pos >= s->mb_stride)
+ q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
+ if ( dc_pred_dir && n == 1)
+ q2 = q1;
+ if (!dc_pred_dir && n == 2)
+ q2 = q1;
+ if (n == 3) q2 = q1;
+
+ if (coded) {
+ int last = 0, skip, value;
+ int k;
+
+ while (!last) {
+ vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
+ i += skip;
+ if (i > 63)
+ break;
+ if (v->fcm == PROGRESSIVE)
+ block[v->zz_8x8[0][i++]] = value;
+ else {
+ if (use_pred && (v->fcm == ILACE_FRAME)) {
+ if (!dc_pred_dir) // top
+ block[v->zz_8x8[2][i++]] = value;
+ else // left
+ block[v->zz_8x8[3][i++]] = value;
+ } else {
+ block[v->zzi_8x8[i++]] = value;
+ }
+ }
+ }
+
+ /* apply AC prediction if needed */
+ if (use_pred) {
+ /* scale predictors if needed*/
+ if (q2 && q1 != q2) {
+ q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+ q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
+
+ if (q1 < 1)
+ return AVERROR_INVALIDDATA;
+ if (dc_pred_dir) { // left
+ for (k = 1; k < 8; k++)
+ block[k << v->left_blk_sh] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+ } else { //top
+ for (k = 1; k < 8; k++)
+ block[k << v->top_blk_sh] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+ }
+ } else {
+ if (dc_pred_dir) { // left
+ for (k = 1; k < 8; k++)
+ block[k << v->left_blk_sh] += ac_val[k];
+ } else { // top
+ for (k = 1; k < 8; k++)
+ block[k << v->top_blk_sh] += ac_val[k + 8];
+ }
+ }
+ }
+ /* save AC coeffs for further prediction */
+ for (k = 1; k < 8; k++) {
+ ac_val2[k ] = block[k << v->left_blk_sh];
+ ac_val2[k + 8] = block[k << v->top_blk_sh];
+ }
+
+ /* scale AC coeffs */
+ for (k = 1; k < 64; k++)
+ if (block[k]) {
+ block[k] *= scale;
+ if (!v->pquantizer)
+ block[k] += (block[k] < 0) ? -mquant : mquant;
+ }
+
+ if (use_pred) i = 63;
+ } else { // no AC coeffs
+ int k;
+
+ memset(ac_val2, 0, 16 * 2);
+ if (dc_pred_dir) { // left
+ if (use_pred) {
+ memcpy(ac_val2, ac_val, 8 * 2);
+ if (q2 && q1 != q2) {
+ q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+ q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
+ if (q1 < 1)
+ return AVERROR_INVALIDDATA;
+ for (k = 1; k < 8; k++)
+ ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+ }
+ }
+ } else { // top
+ if (use_pred) {
+ memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
+ if (q2 && q1 != q2) {
+ q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+ q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
+ if (q1 < 1)
+ return AVERROR_INVALIDDATA;
+ for (k = 1; k < 8; k++)
+ ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+ }
+ }
+ }
+
+ /* apply AC prediction if needed */
+ if (use_pred) {
+ if (dc_pred_dir) { // left
+ for (k = 1; k < 8; k++) {
+ block[k << v->left_blk_sh] = ac_val2[k] * scale;
+ if (!v->pquantizer && block[k << v->left_blk_sh])
+ block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -mquant : mquant;
+ }
+ } else { // top
+ for (k = 1; k < 8; k++) {
+ block[k << v->top_blk_sh] = ac_val2[k + 8] * scale;
+ if (!v->pquantizer && block[k << v->top_blk_sh])
+ block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -mquant : mquant;
+ }
+ }
+ i = 63;
+ }
+ }
+ s->block_last_index[n] = i;
+
+ return 0;
+}
+
+/** Decode P block
+ */
+static int vc1_decode_p_block(VC1Context *v, int16_t block[64], int n,
+ int mquant, int ttmb, int first_block,
+ uint8_t *dst, int linesize, int skip_block,
+ int *ttmb_out)
+{
+ MpegEncContext *s = &v->s;
+ GetBitContext *gb = &s->gb;
+ int i, j;
+ int subblkpat = 0;
+ int scale, off, idx, last, skip, value;
+ int ttblk = ttmb & 7;
+ int pat = 0;
+
+ s->bdsp.clear_block(block);
+
+ if (ttmb == -1) {
+ ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index].table, VC1_TTBLK_VLC_BITS, 1)];
+ }
+ if (ttblk == TT_4X4) {
+ subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
+ }
+ if ((ttblk != TT_8X8 && ttblk != TT_4X4)
+ && ((v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))
+ || (!v->res_rtm_flag && !first_block))) {
+ subblkpat = decode012(gb);
+ if (subblkpat)
+ subblkpat ^= 3; // swap decoded pattern bits
+ if (ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM)
+ ttblk = TT_8X4;
+ if (ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT)
+ ttblk = TT_4X8;
+ }
+ scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0);
+
+ // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
+ if (ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
+ subblkpat = 2 - (ttblk == TT_8X4_TOP);
+ ttblk = TT_8X4;
+ }
+ if (ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
+ subblkpat = 2 - (ttblk == TT_4X8_LEFT);
+ ttblk = TT_4X8;
+ }
+ switch (ttblk) {
+ case TT_8X8:
+ pat = 0xF;
+ i = 0;
+ last = 0;
+ while (!last) {
+ vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
+ i += skip;
+ if (i > 63)
+ break;
+ if (!v->fcm)
+ idx = v->zz_8x8[0][i++];
+ else
+ idx = v->zzi_8x8[i++];
+ block[idx] = value * scale;
+ if (!v->pquantizer)
+ block[idx] += (block[idx] < 0) ? -mquant : mquant;
+ }
+ if (!skip_block) {
+ if (i == 1)
+ v->vc1dsp.vc1_inv_trans_8x8_dc(dst, linesize, block);
+ else {
+ v->vc1dsp.vc1_inv_trans_8x8(block);
+ s->idsp.add_pixels_clamped(block, dst, linesize);
+ }
+ }
+ break;
+ case TT_4X4:
+ pat = ~subblkpat & 0xF;
+ for (j = 0; j < 4; j++) {
+ last = subblkpat & (1 << (3 - j));
+ i = 0;
+ off = (j & 1) * 4 + (j & 2) * 16;
+ while (!last) {
+ vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
+ i += skip;
+ if (i > 15)
+ break;
+ if (!v->fcm)
+ idx = ff_vc1_simple_progressive_4x4_zz[i++];
+ else
+ idx = ff_vc1_adv_interlaced_4x4_zz[i++];
+ block[idx + off] = value * scale;
+ if (!v->pquantizer)
+ block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
+ }
+ if (!(subblkpat & (1 << (3 - j))) && !skip_block) {
+ if (i == 1)
+ v->vc1dsp.vc1_inv_trans_4x4_dc(dst + (j & 1) * 4 + (j & 2) * 2 * linesize, linesize, block + off);
+ else
+ v->vc1dsp.vc1_inv_trans_4x4(dst + (j & 1) * 4 + (j & 2) * 2 * linesize, linesize, block + off);
+ }
+ }
+ break;
+ case TT_8X4:
+ pat = ~((subblkpat & 2) * 6 + (subblkpat & 1) * 3) & 0xF;
+ for (j = 0; j < 2; j++) {
+ last = subblkpat & (1 << (1 - j));
+ i = 0;
+ off = j * 32;
+ while (!last) {
+ vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
+ i += skip;
+ if (i > 31)
+ break;
+ if (!v->fcm)
+ idx = v->zz_8x4[i++] + off;
+ else
+ idx = ff_vc1_adv_interlaced_8x4_zz[i++] + off;
+ block[idx] = value * scale;
+ if (!v->pquantizer)
+ block[idx] += (block[idx] < 0) ? -mquant : mquant;
+ }
+ if (!(subblkpat & (1 << (1 - j))) && !skip_block) {
+ if (i == 1)
+ v->vc1dsp.vc1_inv_trans_8x4_dc(dst + j * 4 * linesize, linesize, block + off);
+ else
+ v->vc1dsp.vc1_inv_trans_8x4(dst + j * 4 * linesize, linesize, block + off);
+ }
+ }
+ break;
+ case TT_4X8:
+ pat = ~(subblkpat * 5) & 0xF;
+ for (j = 0; j < 2; j++) {
+ last = subblkpat & (1 << (1 - j));
+ i = 0;
+ off = j * 4;
+ while (!last) {
+ vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
+ i += skip;
+ if (i > 31)
+ break;
+ if (!v->fcm)
+ idx = v->zz_4x8[i++] + off;
+ else
+ idx = ff_vc1_adv_interlaced_4x8_zz[i++] + off;
+ block[idx] = value * scale;
+ if (!v->pquantizer)
+ block[idx] += (block[idx] < 0) ? -mquant : mquant;
+ }
+ if (!(subblkpat & (1 << (1 - j))) && !skip_block) {
+ if (i == 1)
+ v->vc1dsp.vc1_inv_trans_4x8_dc(dst + j * 4, linesize, block + off);
+ else
+ v->vc1dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off);
+ }
+ }
+ break;
+ }
+ if (ttmb_out)
+ *ttmb_out |= ttblk << (n * 4);
+ return pat;
+}
+
+/** @} */ // Macroblock group
+
+static const int size_table [6] = { 0, 2, 3, 4, 5, 8 };
+static const int offset_table[6] = { 0, 1, 3, 7, 15, 31 };
+
+/** Decode one P-frame MB
+ */
+static int vc1_decode_p_mb(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+ GetBitContext *gb = &s->gb;
+ int i, j;
+ int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+ int cbp; /* cbp decoding stuff */
+ int mqdiff, mquant; /* MB quantization */
+ int ttmb = v->ttfrm; /* MB Transform type */
+
+ int mb_has_coeffs = 1; /* last_flag */
+ int dmv_x, dmv_y; /* Differential MV components */
+ int index, index1; /* LUT indexes */
+ int val, sign; /* temp values */
+ int first_block = 1;
+ int dst_idx, off;
+ int skipped, fourmv;
+ int block_cbp = 0, pat, block_tt = 0, block_intra = 0;
+
+ mquant = v->pq; /* lossy initialization */
+
+ if (v->mv_type_is_raw)
+ fourmv = get_bits1(gb);
+ else
+ fourmv = v->mv_type_mb_plane[mb_pos];
+ if (v->skip_is_raw)
+ skipped = get_bits1(gb);
+ else
+ skipped = v->s.mbskip_table[mb_pos];
+
+ if (!fourmv) { /* 1MV mode */
+ if (!skipped) {
+ GET_MVDATA(dmv_x, dmv_y);
+
+ if (s->mb_intra) {
+ s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
+ s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
+ }
+ s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
+ ff_vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0, 0);
+
+ /* FIXME Set DC val for inter block ? */
+ if (s->mb_intra && !mb_has_coeffs) {
+ GET_MQUANT();
+ s->ac_pred = get_bits1(gb);
+ cbp = 0;
+ } else if (mb_has_coeffs) {
+ if (s->mb_intra)
+ s->ac_pred = get_bits1(gb);
+ cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+ GET_MQUANT();
+ } else {
+ mquant = v->pq;
+ cbp = 0;
+ }
+ s->current_picture.qscale_table[mb_pos] = mquant;
+
+ if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
+ ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table,
+ VC1_TTMB_VLC_BITS, 2);
+ if (!s->mb_intra) ff_vc1_mc_1mv(v, 0);
+ dst_idx = 0;
+ for (i = 0; i < 6; i++) {
+ s->dc_val[0][s->block_index[i]] = 0;
+ dst_idx += i >> 2;
+ val = ((cbp >> (5 - i)) & 1);
+ off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
+ v->mb_type[0][s->block_index[i]] = s->mb_intra;
+ if (s->mb_intra) {
+ /* check if prediction blocks A and C are available */
+ v->a_avail = v->c_avail = 0;
+ if (i == 2 || i == 3 || !s->first_slice_line)
+ v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
+ if (i == 1 || i == 3 || s->mb_x)
+ v->c_avail = v->mb_type[0][s->block_index[i] - 1];
+
+ vc1_decode_intra_block(v, s->block[i], i, val, mquant,
+ (i & 4) ? v->codingset2 : v->codingset);
+ if ((i>3) && (s->flags & CODEC_FLAG_GRAY))
+ continue;
+ v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
+ if (v->rangeredfrm)
+ for (j = 0; j < 64; j++)
+ s->block[i][j] <<= 1;
+ s->idsp.put_signed_pixels_clamped(s->block[i],
+ s->dest[dst_idx] + off,
+ i & 4 ? s->uvlinesize
+ : s->linesize);
+ if (v->pq >= 9 && v->overlap) {
+ if (v->c_avail)
+ v->vc1dsp.vc1_h_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize);
+ if (v->a_avail)
+ v->vc1dsp.vc1_v_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize);
+ }
+ block_cbp |= 0xF << (i << 2);
+ block_intra |= 1 << i;
+ } else if (val) {
+ pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block,
+ s->dest[dst_idx] + off, (i & 4) ? s->uvlinesize : s->linesize,
+ (i & 4) && (s->flags & CODEC_FLAG_GRAY), &block_tt);
+ block_cbp |= pat << (i << 2);
+ if (!v->ttmbf && ttmb < 8)
+ ttmb = -1;
+ first_block = 0;
+ }
+ }
+ } else { // skipped
+ s->mb_intra = 0;
+ for (i = 0; i < 6; i++) {
+ v->mb_type[0][s->block_index[i]] = 0;
+ s->dc_val[0][s->block_index[i]] = 0;
+ }
+ s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
+ s->current_picture.qscale_table[mb_pos] = 0;
+ ff_vc1_pred_mv(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0, 0);
+ ff_vc1_mc_1mv(v, 0);
+ }
+ } else { // 4MV mode
+ if (!skipped /* unskipped MB */) {
+ int intra_count = 0, coded_inter = 0;
+ int is_intra[6], is_coded[6];
+ /* Get CBPCY */
+ cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+ for (i = 0; i < 6; i++) {
+ val = ((cbp >> (5 - i)) & 1);
+ s->dc_val[0][s->block_index[i]] = 0;
+ s->mb_intra = 0;
+ if (i < 4) {
+ dmv_x = dmv_y = 0;
+ s->mb_intra = 0;
+ mb_has_coeffs = 0;
+ if (val) {
+ GET_MVDATA(dmv_x, dmv_y);
+ }
+ ff_vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], 0, 0);
+ if (!s->mb_intra)
+ ff_vc1_mc_4mv_luma(v, i, 0, 0);
+ intra_count += s->mb_intra;
+ is_intra[i] = s->mb_intra;
+ is_coded[i] = mb_has_coeffs;
+ }
+ if (i & 4) {
+ is_intra[i] = (intra_count >= 3);
+ is_coded[i] = val;
+ }
+ if (i == 4)
+ ff_vc1_mc_4mv_chroma(v, 0);
+ v->mb_type[0][s->block_index[i]] = is_intra[i];
+ if (!coded_inter)
+ coded_inter = !is_intra[i] & is_coded[i];
+ }
+ // if there are no coded blocks then don't do anything more
+ dst_idx = 0;
+ if (!intra_count && !coded_inter)
+ goto end;
+ GET_MQUANT();
+ s->current_picture.qscale_table[mb_pos] = mquant;
+ /* test if block is intra and has pred */
+ {
+ int intrapred = 0;
+ for (i = 0; i < 6; i++)
+ if (is_intra[i]) {
+ if (((!s->first_slice_line || (i == 2 || i == 3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
+ || ((s->mb_x || (i == 1 || i == 3)) && v->mb_type[0][s->block_index[i] - 1])) {
+ intrapred = 1;
+ break;
+ }
+ }
+ if (intrapred)
+ s->ac_pred = get_bits1(gb);
+ else
+ s->ac_pred = 0;
+ }
+ if (!v->ttmbf && coded_inter)
+ ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
+ for (i = 0; i < 6; i++) {
+ dst_idx += i >> 2;
+ off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
+ s->mb_intra = is_intra[i];
+ if (is_intra[i]) {
+ /* check if prediction blocks A and C are available */
+ v->a_avail = v->c_avail = 0;
+ if (i == 2 || i == 3 || !s->first_slice_line)
+ v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
+ if (i == 1 || i == 3 || s->mb_x)
+ v->c_avail = v->mb_type[0][s->block_index[i] - 1];
+
+ vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant,
+ (i & 4) ? v->codingset2 : v->codingset);
+ if ((i>3) && (s->flags & CODEC_FLAG_GRAY))
+ continue;
+ v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
+ if (v->rangeredfrm)
+ for (j = 0; j < 64; j++)
+ s->block[i][j] <<= 1;
+ s->idsp.put_signed_pixels_clamped(s->block[i],
+ s->dest[dst_idx] + off,
+ (i & 4) ? s->uvlinesize
+ : s->linesize);
+ if (v->pq >= 9 && v->overlap) {
+ if (v->c_avail)
+ v->vc1dsp.vc1_h_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize);
+ if (v->a_avail)
+ v->vc1dsp.vc1_v_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize);
+ }
+ block_cbp |= 0xF << (i << 2);
+ block_intra |= 1 << i;
+ } else if (is_coded[i]) {
+ pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
+ first_block, s->dest[dst_idx] + off,
+ (i & 4) ? s->uvlinesize : s->linesize,
+ (i & 4) && (s->flags & CODEC_FLAG_GRAY),
+ &block_tt);
+ block_cbp |= pat << (i << 2);
+ if (!v->ttmbf && ttmb < 8)
+ ttmb = -1;
+ first_block = 0;
+ }
+ }
+ } else { // skipped MB
+ s->mb_intra = 0;
+ s->current_picture.qscale_table[mb_pos] = 0;
+ for (i = 0; i < 6; i++) {
+ v->mb_type[0][s->block_index[i]] = 0;
+ s->dc_val[0][s->block_index[i]] = 0;
+ }
+ for (i = 0; i < 4; i++) {
+ ff_vc1_pred_mv(v, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0], 0, 0);
+ ff_vc1_mc_4mv_luma(v, i, 0, 0);
+ }
+ ff_vc1_mc_4mv_chroma(v, 0);
+ s->current_picture.qscale_table[mb_pos] = 0;
+ }
+ }
+end:
+ v->cbp[s->mb_x] = block_cbp;
+ v->ttblk[s->mb_x] = block_tt;
+ v->is_intra[s->mb_x] = block_intra;
+
+ return 0;
+}
+
+/* Decode one macroblock in an interlaced frame p picture */
+
+static int vc1_decode_p_mb_intfr(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+ GetBitContext *gb = &s->gb;
+ int i;
+ int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+ int cbp = 0; /* cbp decoding stuff */
+ int mqdiff, mquant; /* MB quantization */
+ int ttmb = v->ttfrm; /* MB Transform type */
+
+ int mb_has_coeffs = 1; /* last_flag */
+ int dmv_x, dmv_y; /* Differential MV components */
+ int val; /* temp value */
+ int first_block = 1;
+ int dst_idx, off;
+ int skipped, fourmv = 0, twomv = 0;
+ int block_cbp = 0, pat, block_tt = 0;
+ int idx_mbmode = 0, mvbp;
+ int stride_y, fieldtx;
+
+ mquant = v->pq; /* Loosy initialization */
+
+ if (v->skip_is_raw)
+ skipped = get_bits1(gb);
+ else
+ skipped = v->s.mbskip_table[mb_pos];
+ if (!skipped) {
+ if (v->fourmvswitch)
+ idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_4MV_MBMODE_VLC_BITS, 2); // try getting this done
+ else
+ idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2); // in a single line
+ switch (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0]) {
+ /* store the motion vector type in a flag (useful later) */
+ case MV_PMODE_INTFR_4MV:
+ fourmv = 1;
+ v->blk_mv_type[s->block_index[0]] = 0;
+ v->blk_mv_type[s->block_index[1]] = 0;
+ v->blk_mv_type[s->block_index[2]] = 0;
+ v->blk_mv_type[s->block_index[3]] = 0;
+ break;
+ case MV_PMODE_INTFR_4MV_FIELD:
+ fourmv = 1;
+ v->blk_mv_type[s->block_index[0]] = 1;
+ v->blk_mv_type[s->block_index[1]] = 1;
+ v->blk_mv_type[s->block_index[2]] = 1;
+ v->blk_mv_type[s->block_index[3]] = 1;
+ break;
+ case MV_PMODE_INTFR_2MV_FIELD:
+ twomv = 1;
+ v->blk_mv_type[s->block_index[0]] = 1;
+ v->blk_mv_type[s->block_index[1]] = 1;
+ v->blk_mv_type[s->block_index[2]] = 1;
+ v->blk_mv_type[s->block_index[3]] = 1;
+ break;
+ case MV_PMODE_INTFR_1MV:
+ v->blk_mv_type[s->block_index[0]] = 0;
+ v->blk_mv_type[s->block_index[1]] = 0;
+ v->blk_mv_type[s->block_index[2]] = 0;
+ v->blk_mv_type[s->block_index[3]] = 0;
+ break;
+ }
+ if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB
+ for (i = 0; i < 4; i++) {
+ s->current_picture.motion_val[1][s->block_index[i]][0] = 0;
+ s->current_picture.motion_val[1][s->block_index[i]][1] = 0;
+ }
+ s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
+ s->mb_intra = v->is_intra[s->mb_x] = 1;
+ for (i = 0; i < 6; i++)
+ v->mb_type[0][s->block_index[i]] = 1;
+ fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb);
+ mb_has_coeffs = get_bits1(gb);
+ if (mb_has_coeffs)
+ cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+ v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
+ GET_MQUANT();
+ s->current_picture.qscale_table[mb_pos] = mquant;
+ /* Set DC scale - y and c use the same (not sure if necessary here) */
+ s->y_dc_scale = s->y_dc_scale_table[mquant];
+ s->c_dc_scale = s->c_dc_scale_table[mquant];
+ dst_idx = 0;
+ for (i = 0; i < 6; i++) {
+ s->dc_val[0][s->block_index[i]] = 0;
+ dst_idx += i >> 2;
+ val = ((cbp >> (5 - i)) & 1);
+ v->mb_type[0][s->block_index[i]] = s->mb_intra;
+ v->a_avail = v->c_avail = 0;
+ if (i == 2 || i == 3 || !s->first_slice_line)
+ v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
+ if (i == 1 || i == 3 || s->mb_x)
+ v->c_avail = v->mb_type[0][s->block_index[i] - 1];
+
+ vc1_decode_intra_block(v, s->block[i], i, val, mquant,
+ (i & 4) ? v->codingset2 : v->codingset);
+ if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
+ v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
+ if (i < 4) {
+ stride_y = s->linesize << fieldtx;
+ off = (fieldtx) ? ((i & 1) * 8) + ((i & 2) >> 1) * s->linesize : (i & 1) * 8 + 4 * (i & 2) * s->linesize;
+ } else {
+ stride_y = s->uvlinesize;
+ off = 0;
+ }
+ s->idsp.put_signed_pixels_clamped(s->block[i],
+ s->dest[dst_idx] + off,
+ stride_y);
+ //TODO: loop filter
+ }
+
+ } else { // inter MB
+ mb_has_coeffs = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][3];
+ if (mb_has_coeffs)
+ cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+ if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) {
+ v->twomvbp = get_vlc2(gb, v->twomvbp_vlc->table, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
+ } else {
+ if ((ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV)
+ || (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV_FIELD)) {
+ v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
+ }
+ }
+ s->mb_intra = v->is_intra[s->mb_x] = 0;
+ for (i = 0; i < 6; i++)
+ v->mb_type[0][s->block_index[i]] = 0;
+ fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][1];
+ /* for all motion vector read MVDATA and motion compensate each block */
+ dst_idx = 0;
+ if (fourmv) {
+ mvbp = v->fourmvbp;
+ for (i = 0; i < 6; i++) {
+ if (i < 4) {
+ dmv_x = dmv_y = 0;
+ val = ((mvbp >> (3 - i)) & 1);
+ if (val) {
+ get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
+ }
+ ff_vc1_pred_mv_intfr(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], 0);
+ ff_vc1_mc_4mv_luma(v, i, 0, 0);
+ } else if (i == 4) {
+ ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
+ }
+ }
+ } else if (twomv) {
+ mvbp = v->twomvbp;
+ dmv_x = dmv_y = 0;
+ if (mvbp & 2) {
+ get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
+ }
+ ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], 0);
+ ff_vc1_mc_4mv_luma(v, 0, 0, 0);
+ ff_vc1_mc_4mv_luma(v, 1, 0, 0);
+ dmv_x = dmv_y = 0;
+ if (mvbp & 1) {
+ get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
+ }
+ ff_vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], 0);
+ ff_vc1_mc_4mv_luma(v, 2, 0, 0);
+ ff_vc1_mc_4mv_luma(v, 3, 0, 0);
+ ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
+ } else {
+ mvbp = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][2];
+ dmv_x = dmv_y = 0;
+ if (mvbp) {
+ get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
+ }
+ ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0);
+ ff_vc1_mc_1mv(v, 0);
+ }
+ if (cbp)
+ GET_MQUANT(); // p. 227
+ s->current_picture.qscale_table[mb_pos] = mquant;
+ if (!v->ttmbf && cbp)
+ ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
+ for (i = 0; i < 6; i++) {
+ s->dc_val[0][s->block_index[i]] = 0;
+ dst_idx += i >> 2;
+ val = ((cbp >> (5 - i)) & 1);
+ if (!fieldtx)
+ off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
+ else
+ off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize));
+ if (val) {
+ pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
+ first_block, s->dest[dst_idx] + off,
+ (i & 4) ? s->uvlinesize : (s->linesize << fieldtx),
+ (i & 4) && (s->flags & CODEC_FLAG_GRAY), &block_tt);
+ block_cbp |= pat << (i << 2);
+ if (!v->ttmbf && ttmb < 8)
+ ttmb = -1;
+ first_block = 0;
+ }
+ }
+ }
+ } else { // skipped
+ s->mb_intra = v->is_intra[s->mb_x] = 0;
+ for (i = 0; i < 6; i++) {
+ v->mb_type[0][s->block_index[i]] = 0;
+ s->dc_val[0][s->block_index[i]] = 0;
+ }
+ s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
+ s->current_picture.qscale_table[mb_pos] = 0;
+ v->blk_mv_type[s->block_index[0]] = 0;
+ v->blk_mv_type[s->block_index[1]] = 0;
+ v->blk_mv_type[s->block_index[2]] = 0;
+ v->blk_mv_type[s->block_index[3]] = 0;
+ ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0);
+ ff_vc1_mc_1mv(v, 0);
+ }
+ if (s->mb_x == s->mb_width - 1)
+ memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0])*s->mb_stride);
+ return 0;
+}
+
+static int vc1_decode_p_mb_intfi(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+ GetBitContext *gb = &s->gb;
+ int i;
+ int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+ int cbp = 0; /* cbp decoding stuff */
+ int mqdiff, mquant; /* MB quantization */
+ int ttmb = v->ttfrm; /* MB Transform type */
+
+ int mb_has_coeffs = 1; /* last_flag */
+ int dmv_x, dmv_y; /* Differential MV components */
+ int val; /* temp values */
+ int first_block = 1;
+ int dst_idx, off;
+ int pred_flag;
+ int block_cbp = 0, pat, block_tt = 0;
+ int idx_mbmode = 0;
+
+ mquant = v->pq; /* Loosy initialization */
+
+ idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_IF_MBMODE_VLC_BITS, 2);
+ if (idx_mbmode <= 1) { // intra MB
+ s->mb_intra = v->is_intra[s->mb_x] = 1;
+ s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0;
+ s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0;
+ s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
+ GET_MQUANT();
+ s->current_picture.qscale_table[mb_pos] = mquant;
+ /* Set DC scale - y and c use the same (not sure if necessary here) */
+ s->y_dc_scale = s->y_dc_scale_table[mquant];
+ s->c_dc_scale = s->c_dc_scale_table[mquant];
+ v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
+ mb_has_coeffs = idx_mbmode & 1;
+ if (mb_has_coeffs)
+ cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_ICBPCY_VLC_BITS, 2);
+ dst_idx = 0;
+ for (i = 0; i < 6; i++) {
+ s->dc_val[0][s->block_index[i]] = 0;
+ v->mb_type[0][s->block_index[i]] = 1;
+ dst_idx += i >> 2;
+ val = ((cbp >> (5 - i)) & 1);
+ v->a_avail = v->c_avail = 0;
+ if (i == 2 || i == 3 || !s->first_slice_line)
+ v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
+ if (i == 1 || i == 3 || s->mb_x)
+ v->c_avail = v->mb_type[0][s->block_index[i] - 1];
+
+ vc1_decode_intra_block(v, s->block[i], i, val, mquant,
+ (i & 4) ? v->codingset2 : v->codingset);
+ if ((i>3) && (s->flags & CODEC_FLAG_GRAY))
+ continue;
+ v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
+ off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
+ s->idsp.put_signed_pixels_clamped(s->block[i],
+ s->dest[dst_idx] + off,
+ (i & 4) ? s->uvlinesize
+ : s->linesize);
+ // TODO: loop filter
+ }
+ } else {
+ s->mb_intra = v->is_intra[s->mb_x] = 0;
+ s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16;
+ for (i = 0; i < 6; i++) v->mb_type[0][s->block_index[i]] = 0;
+ if (idx_mbmode <= 5) { // 1-MV
+ dmv_x = dmv_y = pred_flag = 0;
+ if (idx_mbmode & 1) {
+ get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag);
+ }
+ ff_vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0);
+ ff_vc1_mc_1mv(v, 0);
+ mb_has_coeffs = !(idx_mbmode & 2);
+ } else { // 4-MV
+ v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
+ for (i = 0; i < 6; i++) {
+ if (i < 4) {
+ dmv_x = dmv_y = pred_flag = 0;
+ val = ((v->fourmvbp >> (3 - i)) & 1);
+ if (val) {
+ get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag);
+ }
+ ff_vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0);
+ ff_vc1_mc_4mv_luma(v, i, 0, 0);
+ } else if (i == 4)
+ ff_vc1_mc_4mv_chroma(v, 0);
+ }
+ mb_has_coeffs = idx_mbmode & 1;
+ }
+ if (mb_has_coeffs)
+ cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+ if (cbp) {
+ GET_MQUANT();
+ }
+ s->current_picture.qscale_table[mb_pos] = mquant;
+ if (!v->ttmbf && cbp) {
+ ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
+ }
+ dst_idx = 0;
+ for (i = 0; i < 6; i++) {
+ s->dc_val[0][s->block_index[i]] = 0;
+ dst_idx += i >> 2;
+ val = ((cbp >> (5 - i)) & 1);
+ off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize;
+ if (val) {
+ pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
+ first_block, s->dest[dst_idx] + off,
+ (i & 4) ? s->uvlinesize : s->linesize,
+ (i & 4) && (s->flags & CODEC_FLAG_GRAY),
+ &block_tt);
+ block_cbp |= pat << (i << 2);
+ if (!v->ttmbf && ttmb < 8) ttmb = -1;
+ first_block = 0;
+ }
+ }
+ }
+ if (s->mb_x == s->mb_width - 1)
+ memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0]) * s->mb_stride);
+ return 0;
+}
+
+/** Decode one B-frame MB (in Main profile)
+ */
+static void vc1_decode_b_mb(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+ GetBitContext *gb = &s->gb;
+ int i, j;
+ int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+ int cbp = 0; /* cbp decoding stuff */
+ int mqdiff, mquant; /* MB quantization */
+ int ttmb = v->ttfrm; /* MB Transform type */
+ int mb_has_coeffs = 0; /* last_flag */
+ int index, index1; /* LUT indexes */
+ int val, sign; /* temp values */
+ int first_block = 1;
+ int dst_idx, off;
+ int skipped, direct;
+ int dmv_x[2], dmv_y[2];
+ int bmvtype = BMV_TYPE_BACKWARD;
+
+ mquant = v->pq; /* lossy initialization */
+ s->mb_intra = 0;
+
+ if (v->dmb_is_raw)
+ direct = get_bits1(gb);
+ else
+ direct = v->direct_mb_plane[mb_pos];
+ if (v->skip_is_raw)
+ skipped = get_bits1(gb);
+ else
+ skipped = v->s.mbskip_table[mb_pos];
+
+ dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
+ for (i = 0; i < 6; i++) {
+ v->mb_type[0][s->block_index[i]] = 0;
+ s->dc_val[0][s->block_index[i]] = 0;
+ }
+ s->current_picture.qscale_table[mb_pos] = 0;
+
+ if (!direct) {
+ if (!skipped) {
+ GET_MVDATA(dmv_x[0], dmv_y[0]);
+ dmv_x[1] = dmv_x[0];
+ dmv_y[1] = dmv_y[0];
+ }
+ if (skipped || !s->mb_intra) {
+ bmvtype = decode012(gb);
+ switch (bmvtype) {
+ case 0:
+ bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
+ break;
+ case 1:
+ bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
+ break;
+ case 2:
+ bmvtype = BMV_TYPE_INTERPOLATED;
+ dmv_x[0] = dmv_y[0] = 0;
+ }
+ }
+ }
+ for (i = 0; i < 6; i++)
+ v->mb_type[0][s->block_index[i]] = s->mb_intra;
+
+ if (skipped) {
+ if (direct)
+ bmvtype = BMV_TYPE_INTERPOLATED;
+ ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
+ vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
+ return;
+ }
+ if (direct) {
+ cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+ GET_MQUANT();
+ s->mb_intra = 0;
+ s->current_picture.qscale_table[mb_pos] = mquant;
+ if (!v->ttmbf)
+ ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
+ dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
+ ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
+ vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
+ } else {
+ if (!mb_has_coeffs && !s->mb_intra) {
+ /* no coded blocks - effectively skipped */
+ ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
+ vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
+ return;
+ }
+ if (s->mb_intra && !mb_has_coeffs) {
+ GET_MQUANT();
+ s->current_picture.qscale_table[mb_pos] = mquant;
+ s->ac_pred = get_bits1(gb);
+ cbp = 0;
+ ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
+ } else {
+ if (bmvtype == BMV_TYPE_INTERPOLATED) {
+ GET_MVDATA(dmv_x[0], dmv_y[0]);
+ if (!mb_has_coeffs) {
+ /* interpolated skipped block */
+ ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
+ vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
+ return;
+ }
+ }
+ ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
+ if (!s->mb_intra) {
+ vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
+ }
+ if (s->mb_intra)
+ s->ac_pred = get_bits1(gb);
+ cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+ GET_MQUANT();
+ s->current_picture.qscale_table[mb_pos] = mquant;
+ if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
+ ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
+ }
+ }
+ dst_idx = 0;
+ for (i = 0; i < 6; i++) {
+ s->dc_val[0][s->block_index[i]] = 0;
+ dst_idx += i >> 2;
+ val = ((cbp >> (5 - i)) & 1);
+ off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
+ v->mb_type[0][s->block_index[i]] = s->mb_intra;
+ if (s->mb_intra) {
+ /* check if prediction blocks A and C are available */
+ v->a_avail = v->c_avail = 0;
+ if (i == 2 || i == 3 || !s->first_slice_line)
+ v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
+ if (i == 1 || i == 3 || s->mb_x)
+ v->c_avail = v->mb_type[0][s->block_index[i] - 1];
+
+ vc1_decode_intra_block(v, s->block[i], i, val, mquant,
+ (i & 4) ? v->codingset2 : v->codingset);
+ if ((i>3) && (s->flags & CODEC_FLAG_GRAY))
+ continue;
+ v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
+ if (v->rangeredfrm)
+ for (j = 0; j < 64; j++)
+ s->block[i][j] <<= 1;
+ s->idsp.put_signed_pixels_clamped(s->block[i],
+ s->dest[dst_idx] + off,
+ i & 4 ? s->uvlinesize
+ : s->linesize);
+ } else if (val) {
+ vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
+ first_block, s->dest[dst_idx] + off,
+ (i & 4) ? s->uvlinesize : s->linesize,
+ (i & 4) && (s->flags & CODEC_FLAG_GRAY), NULL);
+ if (!v->ttmbf && ttmb < 8)
+ ttmb = -1;
+ first_block = 0;
+ }
+ }
+}
+
+/** Decode one B-frame MB (in interlaced field B picture)
+ */
+static void vc1_decode_b_mb_intfi(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+ GetBitContext *gb = &s->gb;
+ int i, j;
+ int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+ int cbp = 0; /* cbp decoding stuff */
+ int mqdiff, mquant; /* MB quantization */
+ int ttmb = v->ttfrm; /* MB Transform type */
+ int mb_has_coeffs = 0; /* last_flag */
+ int val; /* temp value */
+ int first_block = 1;
+ int dst_idx, off;
+ int fwd;
+ int dmv_x[2], dmv_y[2], pred_flag[2];
+ int bmvtype = BMV_TYPE_BACKWARD;
+ int idx_mbmode, interpmvp;
+
+ mquant = v->pq; /* Loosy initialization */
+ s->mb_intra = 0;
+
+ idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_IF_MBMODE_VLC_BITS, 2);
+ if (idx_mbmode <= 1) { // intra MB
+ s->mb_intra = v->is_intra[s->mb_x] = 1;
+ s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
+ s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
+ s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
+ GET_MQUANT();
+ s->current_picture.qscale_table[mb_pos] = mquant;
+ /* Set DC scale - y and c use the same (not sure if necessary here) */
+ s->y_dc_scale = s->y_dc_scale_table[mquant];
+ s->c_dc_scale = s->c_dc_scale_table[mquant];
+ v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
+ mb_has_coeffs = idx_mbmode & 1;
+ if (mb_has_coeffs)
+ cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_ICBPCY_VLC_BITS, 2);
+ dst_idx = 0;
+ for (i = 0; i < 6; i++) {
+ s->dc_val[0][s->block_index[i]] = 0;
+ dst_idx += i >> 2;
+ val = ((cbp >> (5 - i)) & 1);
+ v->mb_type[0][s->block_index[i]] = s->mb_intra;
+ v->a_avail = v->c_avail = 0;
+ if (i == 2 || i == 3 || !s->first_slice_line)
+ v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
+ if (i == 1 || i == 3 || s->mb_x)
+ v->c_avail = v->mb_type[0][s->block_index[i] - 1];
+
+ vc1_decode_intra_block(v, s->block[i], i, val, mquant,
+ (i & 4) ? v->codingset2 : v->codingset);
+ if ((i>3) && (s->flags & CODEC_FLAG_GRAY))
+ continue;
+ v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
+ if (v->rangeredfrm)
+ for (j = 0; j < 64; j++)
+ s->block[i][j] <<= 1;
+ off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
+ s->idsp.put_signed_pixels_clamped(s->block[i],
+ s->dest[dst_idx] + off,
+ (i & 4) ? s->uvlinesize
+ : s->linesize);
+ // TODO: yet to perform loop filter
+ }
+ } else {
+ s->mb_intra = v->is_intra[s->mb_x] = 0;
+ s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16;
+ for (i = 0; i < 6; i++) v->mb_type[0][s->block_index[i]] = 0;
+ if (v->fmb_is_raw)
+ fwd = v->forward_mb_plane[mb_pos] = get_bits1(gb);
+ else
+ fwd = v->forward_mb_plane[mb_pos];
+ if (idx_mbmode <= 5) { // 1-MV
+ dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
+ pred_flag[0] = pred_flag[1] = 0;
+ if (fwd)
+ bmvtype = BMV_TYPE_FORWARD;
+ else {
+ bmvtype = decode012(gb);
+ switch (bmvtype) {
+ case 0:
+ bmvtype = BMV_TYPE_BACKWARD;
+ break;
+ case 1:
+ bmvtype = BMV_TYPE_DIRECT;
+ break;
+ case 2:
+ bmvtype = BMV_TYPE_INTERPOLATED;
+ interpmvp = get_bits1(gb);
+ }
+ }
+ v->bmvtype = bmvtype;
+ if (bmvtype != BMV_TYPE_DIRECT && idx_mbmode & 1) {
+ get_mvdata_interlaced(v, &dmv_x[bmvtype == BMV_TYPE_BACKWARD], &dmv_y[bmvtype == BMV_TYPE_BACKWARD], &pred_flag[bmvtype == BMV_TYPE_BACKWARD]);
+ }
+ if (bmvtype == BMV_TYPE_INTERPOLATED && interpmvp) {
+ get_mvdata_interlaced(v, &dmv_x[1], &dmv_y[1], &pred_flag[1]);
+ }
+ if (bmvtype == BMV_TYPE_DIRECT) {
+ dmv_x[0] = dmv_y[0] = pred_flag[0] = 0;
+ dmv_x[1] = dmv_y[1] = pred_flag[0] = 0;
+ }
+ ff_vc1_pred_b_mv_intfi(v, 0, dmv_x, dmv_y, 1, pred_flag);
+ vc1_b_mc(v, dmv_x, dmv_y, (bmvtype == BMV_TYPE_DIRECT), bmvtype);
+ mb_has_coeffs = !(idx_mbmode & 2);
+ } else { // 4-MV
+ if (fwd)
+ bmvtype = BMV_TYPE_FORWARD;
+ v->bmvtype = bmvtype;
+ v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
+ for (i = 0; i < 6; i++) {
+ if (i < 4) {
+ dmv_x[0] = dmv_y[0] = pred_flag[0] = 0;
+ dmv_x[1] = dmv_y[1] = pred_flag[1] = 0;
+ val = ((v->fourmvbp >> (3 - i)) & 1);
+ if (val) {
+ get_mvdata_interlaced(v, &dmv_x[bmvtype == BMV_TYPE_BACKWARD],
+ &dmv_y[bmvtype == BMV_TYPE_BACKWARD],
+ &pred_flag[bmvtype == BMV_TYPE_BACKWARD]);
+ }
+ ff_vc1_pred_b_mv_intfi(v, i, dmv_x, dmv_y, 0, pred_flag);
+ ff_vc1_mc_4mv_luma(v, i, bmvtype == BMV_TYPE_BACKWARD, 0);
+ } else if (i == 4)
+ ff_vc1_mc_4mv_chroma(v, bmvtype == BMV_TYPE_BACKWARD);
+ }
+ mb_has_coeffs = idx_mbmode & 1;
+ }
+ if (mb_has_coeffs)
+ cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+ if (cbp) {
+ GET_MQUANT();
+ }
+ s->current_picture.qscale_table[mb_pos] = mquant;
+ if (!v->ttmbf && cbp) {
+ ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
+ }
+ dst_idx = 0;
+ for (i = 0; i < 6; i++) {
+ s->dc_val[0][s->block_index[i]] = 0;
+ dst_idx += i >> 2;
+ val = ((cbp >> (5 - i)) & 1);
+ off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize;
+ if (val) {
+ vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
+ first_block, s->dest[dst_idx] + off,
+ (i & 4) ? s->uvlinesize : s->linesize,
+ (i & 4) && (s->flags & CODEC_FLAG_GRAY), NULL);
+ if (!v->ttmbf && ttmb < 8)
+ ttmb = -1;
+ first_block = 0;
+ }
+ }
+ }
+}
+
+/** Decode one B-frame MB (in interlaced frame B picture)
+ */
+static int vc1_decode_b_mb_intfr(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+ GetBitContext *gb = &s->gb;
+ int i, j;
+ int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+ int cbp = 0; /* cbp decoding stuff */
+ int mqdiff, mquant; /* MB quantization */
+ int ttmb = v->ttfrm; /* MB Transform type */
+ int mvsw = 0; /* motion vector switch */
+ int mb_has_coeffs = 1; /* last_flag */
+ int dmv_x, dmv_y; /* Differential MV components */
+ int val; /* temp value */
+ int first_block = 1;
+ int dst_idx, off;
+ int skipped, direct, twomv = 0;
+ int block_cbp = 0, pat, block_tt = 0;
+ int idx_mbmode = 0, mvbp;
+ int stride_y, fieldtx;
+ int bmvtype = BMV_TYPE_BACKWARD;
+ int dir, dir2;
+
+ mquant = v->pq; /* Lossy initialization */
+ s->mb_intra = 0;
+ if (v->skip_is_raw)
+ skipped = get_bits1(gb);
+ else
+ skipped = v->s.mbskip_table[mb_pos];
+
+ if (!skipped) {
+ idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2);
+ if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) {
+ twomv = 1;
+ v->blk_mv_type[s->block_index[0]] = 1;
+ v->blk_mv_type[s->block_index[1]] = 1;
+ v->blk_mv_type[s->block_index[2]] = 1;
+ v->blk_mv_type[s->block_index[3]] = 1;
+ } else {
+ v->blk_mv_type[s->block_index[0]] = 0;
+ v->blk_mv_type[s->block_index[1]] = 0;
+ v->blk_mv_type[s->block_index[2]] = 0;
+ v->blk_mv_type[s->block_index[3]] = 0;
+ }
+ }
+
+ if (v->dmb_is_raw)
+ direct = get_bits1(gb);
+ else
+ direct = v->direct_mb_plane[mb_pos];
+
+ if (direct) {
+ s->mv[0][0][0] = s->current_picture.motion_val[0][s->block_index[0]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][0], v->bfraction, 0, s->quarter_sample);
+ s->mv[0][0][1] = s->current_picture.motion_val[0][s->block_index[0]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][1], v->bfraction, 0, s->quarter_sample);
+ s->mv[1][0][0] = s->current_picture.motion_val[1][s->block_index[0]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][0], v->bfraction, 1, s->quarter_sample);
+ s->mv[1][0][1] = s->current_picture.motion_val[1][s->block_index[0]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][1], v->bfraction, 1, s->quarter_sample);
+
+ if (twomv) {
+ s->mv[0][2][0] = s->current_picture.motion_val[0][s->block_index[2]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][0], v->bfraction, 0, s->quarter_sample);
+ s->mv[0][2][1] = s->current_picture.motion_val[0][s->block_index[2]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][1], v->bfraction, 0, s->quarter_sample);
+ s->mv[1][2][0] = s->current_picture.motion_val[1][s->block_index[2]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][0], v->bfraction, 1, s->quarter_sample);
+ s->mv[1][2][1] = s->current_picture.motion_val[1][s->block_index[2]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][1], v->bfraction, 1, s->quarter_sample);
+
+ for (i = 1; i < 4; i += 2) {
+ s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = s->mv[0][i-1][0];
+ s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = s->mv[0][i-1][1];
+ s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = s->mv[1][i-1][0];
+ s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = s->mv[1][i-1][1];
+ }
+ } else {
+ for (i = 1; i < 4; i++) {
+ s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = s->mv[0][0][0];
+ s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = s->mv[0][0][1];
+ s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = s->mv[1][0][0];
+ s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = s->mv[1][0][1];
+ }
+ }
+ }
+
+ if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB
+ for (i = 0; i < 4; i++) {
+ s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = 0;
+ s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = 0;
+ s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = 0;
+ s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = 0;
+ }
+ s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
+ s->mb_intra = v->is_intra[s->mb_x] = 1;
+ for (i = 0; i < 6; i++)
+ v->mb_type[0][s->block_index[i]] = 1;
+ fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb);
+ mb_has_coeffs = get_bits1(gb);
+ if (mb_has_coeffs)
+ cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+ v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
+ GET_MQUANT();
+ s->current_picture.qscale_table[mb_pos] = mquant;
+ /* Set DC scale - y and c use the same (not sure if necessary here) */
+ s->y_dc_scale = s->y_dc_scale_table[mquant];
+ s->c_dc_scale = s->c_dc_scale_table[mquant];
+ dst_idx = 0;
+ for (i = 0; i < 6; i++) {
+ s->dc_val[0][s->block_index[i]] = 0;
+ dst_idx += i >> 2;
+ val = ((cbp >> (5 - i)) & 1);
+ v->mb_type[0][s->block_index[i]] = s->mb_intra;
+ v->a_avail = v->c_avail = 0;
+ if (i == 2 || i == 3 || !s->first_slice_line)
+ v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
+ if (i == 1 || i == 3 || s->mb_x)
+ v->c_avail = v->mb_type[0][s->block_index[i] - 1];
+
+ vc1_decode_intra_block(v, s->block[i], i, val, mquant,
+ (i & 4) ? v->codingset2 : v->codingset);
+ if (i > 3 && (s->flags & CODEC_FLAG_GRAY))
+ continue;
+ v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
+ if (i < 4) {
+ stride_y = s->linesize << fieldtx;
+ off = (fieldtx) ? ((i & 1) * 8) + ((i & 2) >> 1) * s->linesize : (i & 1) * 8 + 4 * (i & 2) * s->linesize;
+ } else {
+ stride_y = s->uvlinesize;
+ off = 0;
+ }
+ s->idsp.put_signed_pixels_clamped(s->block[i],
+ s->dest[dst_idx] + off,
+ stride_y);
+ }
+ } else {
+ s->mb_intra = v->is_intra[s->mb_x] = 0;
+ if (!direct) {
+ if (skipped || !s->mb_intra) {
+ bmvtype = decode012(gb);
+ switch (bmvtype) {
+ case 0:
+ bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
+ break;
+ case 1:
+ bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
+ break;
+ case 2:
+ bmvtype = BMV_TYPE_INTERPOLATED;
+ }
+ }
+
+ if (twomv && bmvtype != BMV_TYPE_INTERPOLATED)
+ mvsw = get_bits1(gb);
+ }
+
+ if (!skipped) { // inter MB
+ mb_has_coeffs = ff_vc1_mbmode_intfrp[0][idx_mbmode][3];
+ if (mb_has_coeffs)
+ cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+ if (!direct) {
+ if (bmvtype == BMV_TYPE_INTERPOLATED && twomv) {
+ v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
+ } else if (bmvtype == BMV_TYPE_INTERPOLATED || twomv) {
+ v->twomvbp = get_vlc2(gb, v->twomvbp_vlc->table, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
+ }
+ }
+
+ for (i = 0; i < 6; i++)
+ v->mb_type[0][s->block_index[i]] = 0;
+ fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[0][idx_mbmode][1];
+ /* for all motion vector read MVDATA and motion compensate each block */
+ dst_idx = 0;
+ if (direct) {
+ if (twomv) {
+ for (i = 0; i < 4; i++) {
+ ff_vc1_mc_4mv_luma(v, i, 0, 0);
+ ff_vc1_mc_4mv_luma(v, i, 1, 1);
+ }
+ ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
+ ff_vc1_mc_4mv_chroma4(v, 1, 1, 1);
+ } else {
+ ff_vc1_mc_1mv(v, 0);
+ ff_vc1_interp_mc(v);
+ }
+ } else if (twomv && bmvtype == BMV_TYPE_INTERPOLATED) {
+ mvbp = v->fourmvbp;
+ for (i = 0; i < 4; i++) {
+ dir = i==1 || i==3;
+ dmv_x = dmv_y = 0;
+ val = ((mvbp >> (3 - i)) & 1);
+ if (val)
+ get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
+ j = i > 1 ? 2 : 0;
+ ff_vc1_pred_mv_intfr(v, j, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir);
+ ff_vc1_mc_4mv_luma(v, j, dir, dir);
+ ff_vc1_mc_4mv_luma(v, j+1, dir, dir);
+ }
+
+ ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
+ ff_vc1_mc_4mv_chroma4(v, 1, 1, 1);
+ } else if (bmvtype == BMV_TYPE_INTERPOLATED) {
+ mvbp = v->twomvbp;
+ dmv_x = dmv_y = 0;
+ if (mvbp & 2)
+ get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
+
+ ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0);
+ ff_vc1_mc_1mv(v, 0);
+
+ dmv_x = dmv_y = 0;
+ if (mvbp & 1)
+ get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
+
+ ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 1);
+ ff_vc1_interp_mc(v);
+ } else if (twomv) {
+ dir = bmvtype == BMV_TYPE_BACKWARD;
+ dir2 = dir;
+ if (mvsw)
+ dir2 = !dir;
+ mvbp = v->twomvbp;
+ dmv_x = dmv_y = 0;
+ if (mvbp & 2)
+ get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
+ ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir);
+
+ dmv_x = dmv_y = 0;
+ if (mvbp & 1)
+ get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
+ ff_vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir2);
+
+ if (mvsw) {
+ for (i = 0; i < 2; i++) {
+ s->mv[dir][i+2][0] = s->mv[dir][i][0] = s->current_picture.motion_val[dir][s->block_index[i+2]][0] = s->current_picture.motion_val[dir][s->block_index[i]][0];
+ s->mv[dir][i+2][1] = s->mv[dir][i][1] = s->current_picture.motion_val[dir][s->block_index[i+2]][1] = s->current_picture.motion_val[dir][s->block_index[i]][1];
+ s->mv[dir2][i+2][0] = s->mv[dir2][i][0] = s->current_picture.motion_val[dir2][s->block_index[i]][0] = s->current_picture.motion_val[dir2][s->block_index[i+2]][0];
+ s->mv[dir2][i+2][1] = s->mv[dir2][i][1] = s->current_picture.motion_val[dir2][s->block_index[i]][1] = s->current_picture.motion_val[dir2][s->block_index[i+2]][1];
+ }
+ } else {
+ ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, v->mb_type[0], !dir);
+ ff_vc1_pred_mv_intfr(v, 2, 0, 0, 2, v->range_x, v->range_y, v->mb_type[0], !dir);
+ }
+
+ ff_vc1_mc_4mv_luma(v, 0, dir, 0);
+ ff_vc1_mc_4mv_luma(v, 1, dir, 0);
+ ff_vc1_mc_4mv_luma(v, 2, dir2, 0);
+ ff_vc1_mc_4mv_luma(v, 3, dir2, 0);
+ ff_vc1_mc_4mv_chroma4(v, dir, dir2, 0);
+ } else {
+ dir = bmvtype == BMV_TYPE_BACKWARD;
+
+ mvbp = ff_vc1_mbmode_intfrp[0][idx_mbmode][2];
+ dmv_x = dmv_y = 0;
+ if (mvbp)
+ get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
+
+ ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], dir);
+ v->blk_mv_type[s->block_index[0]] = 1;
+ v->blk_mv_type[s->block_index[1]] = 1;
+ v->blk_mv_type[s->block_index[2]] = 1;
+ v->blk_mv_type[s->block_index[3]] = 1;
+ ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, 0, !dir);
+ for (i = 0; i < 2; i++) {
+ s->mv[!dir][i+2][0] = s->mv[!dir][i][0] = s->current_picture.motion_val[!dir][s->block_index[i+2]][0] = s->current_picture.motion_val[!dir][s->block_index[i]][0];
+ s->mv[!dir][i+2][1] = s->mv[!dir][i][1] = s->current_picture.motion_val[!dir][s->block_index[i+2]][1] = s->current_picture.motion_val[!dir][s->block_index[i]][1];
+ }
+ ff_vc1_mc_1mv(v, dir);
+ }
+
+ if (cbp)
+ GET_MQUANT(); // p. 227
+ s->current_picture.qscale_table[mb_pos] = mquant;
+ if (!v->ttmbf && cbp)
+ ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
+ for (i = 0; i < 6; i++) {
+ s->dc_val[0][s->block_index[i]] = 0;
+ dst_idx += i >> 2;
+ val = ((cbp >> (5 - i)) & 1);
+ if (!fieldtx)
+ off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
+ else
+ off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize));
+ if (val) {
+ pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
+ first_block, s->dest[dst_idx] + off,
+ (i & 4) ? s->uvlinesize : (s->linesize << fieldtx),
+ (i & 4) && (s->flags & CODEC_FLAG_GRAY), &block_tt);
+ block_cbp |= pat << (i << 2);
+ if (!v->ttmbf && ttmb < 8)
+ ttmb = -1;
+ first_block = 0;
+ }
+ }
+
+ } else { // skipped
+ dir = 0;
+ for (i = 0; i < 6; i++) {
+ v->mb_type[0][s->block_index[i]] = 0;
+ s->dc_val[0][s->block_index[i]] = 0;
+ }
+ s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
+ s->current_picture.qscale_table[mb_pos] = 0;
+ v->blk_mv_type[s->block_index[0]] = 0;
+ v->blk_mv_type[s->block_index[1]] = 0;
+ v->blk_mv_type[s->block_index[2]] = 0;
+ v->blk_mv_type[s->block_index[3]] = 0;
+
+ if (!direct) {
+ if (bmvtype == BMV_TYPE_INTERPOLATED) {
+ ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0);
+ ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 1);
+ } else {
+ dir = bmvtype == BMV_TYPE_BACKWARD;
+ ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], dir);
+ if (mvsw) {
+ int dir2 = dir;
+ if (mvsw)
+ dir2 = !dir;
+ for (i = 0; i < 2; i++) {
+ s->mv[dir][i+2][0] = s->mv[dir][i][0] = s->current_picture.motion_val[dir][s->block_index[i+2]][0] = s->current_picture.motion_val[dir][s->block_index[i]][0];
+ s->mv[dir][i+2][1] = s->mv[dir][i][1] = s->current_picture.motion_val[dir][s->block_index[i+2]][1] = s->current_picture.motion_val[dir][s->block_index[i]][1];
+ s->mv[dir2][i+2][0] = s->mv[dir2][i][0] = s->current_picture.motion_val[dir2][s->block_index[i]][0] = s->current_picture.motion_val[dir2][s->block_index[i+2]][0];
+ s->mv[dir2][i+2][1] = s->mv[dir2][i][1] = s->current_picture.motion_val[dir2][s->block_index[i]][1] = s->current_picture.motion_val[dir2][s->block_index[i+2]][1];
+ }
+ } else {
+ v->blk_mv_type[s->block_index[0]] = 1;
+ v->blk_mv_type[s->block_index[1]] = 1;
+ v->blk_mv_type[s->block_index[2]] = 1;
+ v->blk_mv_type[s->block_index[3]] = 1;
+ ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, 0, !dir);
+ for (i = 0; i < 2; i++) {
+ s->mv[!dir][i+2][0] = s->mv[!dir][i][0] = s->current_picture.motion_val[!dir][s->block_index[i+2]][0] = s->current_picture.motion_val[!dir][s->block_index[i]][0];
+ s->mv[!dir][i+2][1] = s->mv[!dir][i][1] = s->current_picture.motion_val[!dir][s->block_index[i+2]][1] = s->current_picture.motion_val[!dir][s->block_index[i]][1];
+ }
+ }
+ }
+ }
+
+ ff_vc1_mc_1mv(v, dir);
+ if (direct || bmvtype == BMV_TYPE_INTERPOLATED) {
+ ff_vc1_interp_mc(v);
+ }
+ }
+ }
+ if (s->mb_x == s->mb_width - 1)
+ memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0]) * s->mb_stride);
+ v->cbp[s->mb_x] = block_cbp;
+ v->ttblk[s->mb_x] = block_tt;
+ return 0;
+}
+
+/** Decode blocks of I-frame
+ */
+static void vc1_decode_i_blocks(VC1Context *v)
+{
+ int k, j;
+ MpegEncContext *s = &v->s;
+ int cbp, val;
+ uint8_t *coded_val;
+ int mb_pos;
+
+ /* select codingmode used for VLC tables selection */
+ switch (v->y_ac_table_index) {
+ case 0:
+ v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
+ break;
+ case 1:
+ v->codingset = CS_HIGH_MOT_INTRA;
+ break;
+ case 2:
+ v->codingset = CS_MID_RATE_INTRA;
+ break;
+ }
+
+ switch (v->c_ac_table_index) {
+ case 0:
+ v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
+ break;
+ case 1:
+ v->codingset2 = CS_HIGH_MOT_INTER;
+ break;
+ case 2:
+ v->codingset2 = CS_MID_RATE_INTER;
+ break;
+ }
+
+ /* Set DC scale - y and c use the same */
+ s->y_dc_scale = s->y_dc_scale_table[v->pq];
+ s->c_dc_scale = s->c_dc_scale_table[v->pq];
+
+ //do frame decode
+ s->mb_x = s->mb_y = 0;
+ s->mb_intra = 1;
+ s->first_slice_line = 1;
+ for (s->mb_y = 0; s->mb_y < s->end_mb_y; s->mb_y++) {
+ s->mb_x = 0;
+ init_block_index(v);
+ for (; s->mb_x < v->end_mb_x; s->mb_x++) {
+ uint8_t *dst[6];
+ ff_update_block_index(s);
+ dst[0] = s->dest[0];
+ dst[1] = dst[0] + 8;
+ dst[2] = s->dest[0] + s->linesize * 8;
+ dst[3] = dst[2] + 8;
+ dst[4] = s->dest[1];
+ dst[5] = s->dest[2];
+ s->bdsp.clear_blocks(s->block[0]);
+ mb_pos = s->mb_x + s->mb_y * s->mb_width;
+ s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
+ s->current_picture.qscale_table[mb_pos] = v->pq;
+ s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
+ s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
+
+ // do actual MB decoding and displaying
+ cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
+ v->s.ac_pred = get_bits1(&v->s.gb);
+
+ for (k = 0; k < 6; k++) {
+ val = ((cbp >> (5 - k)) & 1);
+
+ if (k < 4) {
+ int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
+ val = val ^ pred;
+ *coded_val = val;
+ }
+ cbp |= val << (5 - k);
+
+ vc1_decode_i_block(v, s->block[k], k, val, (k < 4) ? v->codingset : v->codingset2);
+
+ if (k > 3 && (s->flags & CODEC_FLAG_GRAY))
+ continue;
+ v->vc1dsp.vc1_inv_trans_8x8(s->block[k]);
+ if (v->pq >= 9 && v->overlap) {
+ if (v->rangeredfrm)
+ for (j = 0; j < 64; j++)
+ s->block[k][j] <<= 1;
+ s->idsp.put_signed_pixels_clamped(s->block[k], dst[k],
+ k & 4 ? s->uvlinesize
+ : s->linesize);
+ } else {
+ if (v->rangeredfrm)
+ for (j = 0; j < 64; j++)
+ s->block[k][j] = (s->block[k][j] - 64) << 1;
+ s->idsp.put_pixels_clamped(s->block[k], dst[k],
+ k & 4 ? s->uvlinesize
+ : s->linesize);
+ }
+ }
+
+ if (v->pq >= 9 && v->overlap) {
+ if (s->mb_x) {
+ v->vc1dsp.vc1_h_overlap(s->dest[0], s->linesize);
+ v->vc1dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
+ if (!(s->flags & CODEC_FLAG_GRAY)) {
+ v->vc1dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
+ v->vc1dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
+ }
+ }
+ v->vc1dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
+ v->vc1dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
+ if (!s->first_slice_line) {
+ v->vc1dsp.vc1_v_overlap(s->dest[0], s->linesize);
+ v->vc1dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
+ if (!(s->flags & CODEC_FLAG_GRAY)) {
+ v->vc1dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
+ v->vc1dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
+ }
+ }
+ v->vc1dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
+ v->vc1dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
+ }
+ if (v->s.loop_filter)
+ ff_vc1_loop_filter_iblk(v, v->pq);
+
+ if (get_bits_count(&s->gb) > v->bits) {
+ ff_er_add_slice(&s->er, 0, 0, s->mb_x, s->mb_y, ER_MB_ERROR);
+ av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n",
+ get_bits_count(&s->gb), v->bits);
+ return;
+ }
+ }
+ if (!v->s.loop_filter)
+ ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16);
+ else if (s->mb_y)
+ ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16);
+
+ s->first_slice_line = 0;
+ }
+ if (v->s.loop_filter)
+ ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16);
+
+ /* This is intentionally mb_height and not end_mb_y - unlike in advanced
+ * profile, these only differ are when decoding MSS2 rectangles. */
+ ff_er_add_slice(&s->er, 0, 0, s->mb_width - 1, s->mb_height - 1, ER_MB_END);
+}
+
+/** Decode blocks of I-frame for advanced profile
+ */
+static void vc1_decode_i_blocks_adv(VC1Context *v)
+{
+ int k;
+ MpegEncContext *s = &v->s;
+ int cbp, val;
+ uint8_t *coded_val;
+ int mb_pos;
+ int mquant = v->pq;
+ int mqdiff;
+ GetBitContext *gb = &s->gb;
+
+ /* select codingmode used for VLC tables selection */
+ switch (v->y_ac_table_index) {
+ case 0:
+ v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
+ break;
+ case 1:
+ v->codingset = CS_HIGH_MOT_INTRA;
+ break;
+ case 2:
+ v->codingset = CS_MID_RATE_INTRA;
+ break;
+ }
+
+ switch (v->c_ac_table_index) {
+ case 0:
+ v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
+ break;
+ case 1:
+ v->codingset2 = CS_HIGH_MOT_INTER;
+ break;
+ case 2:
+ v->codingset2 = CS_MID_RATE_INTER;
+ break;
+ }
+
+ // do frame decode
+ s->mb_x = s->mb_y = 0;
+ s->mb_intra = 1;
+ s->first_slice_line = 1;
+ s->mb_y = s->start_mb_y;
+ if (s->start_mb_y) {
+ s->mb_x = 0;
+ init_block_index(v);
+ memset(&s->coded_block[s->block_index[0] - s->b8_stride], 0,
+ (1 + s->b8_stride) * sizeof(*s->coded_block));
+ }
+ for (; s->mb_y < s->end_mb_y; s->mb_y++) {
+ s->mb_x = 0;
+ init_block_index(v);
+ for (;s->mb_x < s->mb_width; s->mb_x++) {
+ int16_t (*block)[64] = v->block[v->cur_blk_idx];
+ ff_update_block_index(s);
+ s->bdsp.clear_blocks(block[0]);
+ mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+ s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
+ s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0;
+ s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0;
+
+ // do actual MB decoding and displaying
+ if (v->fieldtx_is_raw)
+ v->fieldtx_plane[mb_pos] = get_bits1(&v->s.gb);
+ cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
+ if ( v->acpred_is_raw)
+ v->s.ac_pred = get_bits1(&v->s.gb);
+ else
+ v->s.ac_pred = v->acpred_plane[mb_pos];
+
+ if (v->condover == CONDOVER_SELECT && v->overflg_is_raw)
+ v->over_flags_plane[mb_pos] = get_bits1(&v->s.gb);
+
+ GET_MQUANT();
+
+ s->current_picture.qscale_table[mb_pos] = mquant;
+ /* Set DC scale - y and c use the same */
+ s->y_dc_scale = s->y_dc_scale_table[mquant];
+ s->c_dc_scale = s->c_dc_scale_table[mquant];
+
+ for (k = 0; k < 6; k++) {
+ val = ((cbp >> (5 - k)) & 1);
+
+ if (k < 4) {
+ int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
+ val = val ^ pred;
+ *coded_val = val;
+ }
+ cbp |= val << (5 - k);
+
+ v->a_avail = !s->first_slice_line || (k == 2 || k == 3);
+ v->c_avail = !!s->mb_x || (k == 1 || k == 3);
+
+ vc1_decode_i_block_adv(v, block[k], k, val,
+ (k < 4) ? v->codingset : v->codingset2, mquant);
+
+ if (k > 3 && (s->flags & CODEC_FLAG_GRAY))
+ continue;
+ v->vc1dsp.vc1_inv_trans_8x8(block[k]);
+ }
+
+ ff_vc1_smooth_overlap_filter_iblk(v);
+ vc1_put_signed_blocks_clamped(v);
+ if (v->s.loop_filter)
+ ff_vc1_loop_filter_iblk_delayed(v, v->pq);
+
+ if (get_bits_count(&s->gb) > v->bits) {
+ // TODO: may need modification to handle slice coding
+ ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
+ av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n",
+ get_bits_count(&s->gb), v->bits);
+ return;
+ }
+ }
+ if (!v->s.loop_filter)
+ ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16);
+ else if (s->mb_y)
+ ff_mpeg_draw_horiz_band(s, (s->mb_y-1) * 16, 16);
+ s->first_slice_line = 0;
+ }
+
+ /* raw bottom MB row */
+ s->mb_x = 0;
+ init_block_index(v);
+
+ for (;s->mb_x < s->mb_width; s->mb_x++) {
+ ff_update_block_index(s);
+ vc1_put_signed_blocks_clamped(v);
+ if (v->s.loop_filter)
+ ff_vc1_loop_filter_iblk_delayed(v, v->pq);
+ }
+ if (v->s.loop_filter)
+ ff_mpeg_draw_horiz_band(s, (s->end_mb_y-1)*16, 16);
+ ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
+ (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
+}
+
+static void vc1_decode_p_blocks(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+ int apply_loop_filter;
+
+ /* select codingmode used for VLC tables selection */
+ switch (v->c_ac_table_index) {
+ case 0:
+ v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
+ break;
+ case 1:
+ v->codingset = CS_HIGH_MOT_INTRA;
+ break;
+ case 2:
+ v->codingset = CS_MID_RATE_INTRA;
+ break;
+ }
+
+ switch (v->c_ac_table_index) {
+ case 0:
+ v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
+ break;
+ case 1:
+ v->codingset2 = CS_HIGH_MOT_INTER;
+ break;
+ case 2:
+ v->codingset2 = CS_MID_RATE_INTER;
+ break;
+ }
+
+ apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY) &&
+ v->fcm == PROGRESSIVE;
+ s->first_slice_line = 1;
+ memset(v->cbp_base, 0, sizeof(v->cbp_base[0])*2*s->mb_stride);
+ for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
+ s->mb_x = 0;
+ init_block_index(v);
+ for (; s->mb_x < s->mb_width; s->mb_x++) {
+ ff_update_block_index(s);
+
+ if (v->fcm == ILACE_FIELD)
+ vc1_decode_p_mb_intfi(v);
+ else if (v->fcm == ILACE_FRAME)
+ vc1_decode_p_mb_intfr(v);
+ else vc1_decode_p_mb(v);
+ if (s->mb_y != s->start_mb_y && apply_loop_filter)
+ ff_vc1_apply_p_loop_filter(v);
+ if (get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
+ // TODO: may need modification to handle slice coding
+ ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
+ av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n",
+ get_bits_count(&s->gb), v->bits, s->mb_x, s->mb_y);
+ return;
+ }
+ }
+ memmove(v->cbp_base, v->cbp, sizeof(v->cbp_base[0]) * s->mb_stride);
+ memmove(v->ttblk_base, v->ttblk, sizeof(v->ttblk_base[0]) * s->mb_stride);
+ memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0]) * s->mb_stride);
+ memmove(v->luma_mv_base, v->luma_mv, sizeof(v->luma_mv_base[0]) * s->mb_stride);
+ if (s->mb_y != s->start_mb_y) ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16);
+ s->first_slice_line = 0;
+ }
+ if (apply_loop_filter) {
+ s->mb_x = 0;
+ init_block_index(v);
+ for (; s->mb_x < s->mb_width; s->mb_x++) {
+ ff_update_block_index(s);
+ ff_vc1_apply_p_loop_filter(v);
+ }
+ }
+ if (s->end_mb_y >= s->start_mb_y)
+ ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16);
+ ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
+ (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
+}
+
+static void vc1_decode_b_blocks(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+
+ /* select codingmode used for VLC tables selection */
+ switch (v->c_ac_table_index) {
+ case 0:
+ v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
+ break;
+ case 1:
+ v->codingset = CS_HIGH_MOT_INTRA;
+ break;
+ case 2:
+ v->codingset = CS_MID_RATE_INTRA;
+ break;
+ }
+
+ switch (v->c_ac_table_index) {
+ case 0:
+ v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
+ break;
+ case 1:
+ v->codingset2 = CS_HIGH_MOT_INTER;
+ break;
+ case 2:
+ v->codingset2 = CS_MID_RATE_INTER;
+ break;
+ }
+
+ s->first_slice_line = 1;
+ for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
+ s->mb_x = 0;
+ init_block_index(v);
+ for (; s->mb_x < s->mb_width; s->mb_x++) {
+ ff_update_block_index(s);
+
+ if (v->fcm == ILACE_FIELD)
+ vc1_decode_b_mb_intfi(v);
+ else if (v->fcm == ILACE_FRAME)
+ vc1_decode_b_mb_intfr(v);
+ else
+ vc1_decode_b_mb(v);
+ if (get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
+ // TODO: may need modification to handle slice coding
+ ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
+ av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n",
+ get_bits_count(&s->gb), v->bits, s->mb_x, s->mb_y);
+ return;
+ }
+ if (v->s.loop_filter)
+ ff_vc1_loop_filter_iblk(v, v->pq);
+ }
+ if (!v->s.loop_filter)
+ ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16);
+ else if (s->mb_y)
+ ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16);
+ s->first_slice_line = 0;
+ }
+ if (v->s.loop_filter)
+ ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16);
+ ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
+ (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
+}
+
+static void vc1_decode_skip_blocks(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+
+ if (!v->s.last_picture.f->data[0])
+ return;
+
+ ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_width - 1, s->end_mb_y - 1, ER_MB_END);
+ s->first_slice_line = 1;
+ for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
+ s->mb_x = 0;
+ init_block_index(v);
+ ff_update_block_index(s);
+ memcpy(s->dest[0], s->last_picture.f->data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
+ memcpy(s->dest[1], s->last_picture.f->data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
+ memcpy(s->dest[2], s->last_picture.f->data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
+ ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16);
+ s->first_slice_line = 0;
+ }
+ s->pict_type = AV_PICTURE_TYPE_P;
+}
+
+void ff_vc1_decode_blocks(VC1Context *v)
+{
+
+ v->s.esc3_level_length = 0;
+ if (v->x8_type) {
+ ff_intrax8_decode_picture(&v->x8, 2*v->pq + v->halfpq, v->pq * !v->pquantizer);
+ } else {
+ v->cur_blk_idx = 0;
+ v->left_blk_idx = -1;
+ v->topleft_blk_idx = 1;
+ v->top_blk_idx = 2;
+ switch (v->s.pict_type) {
+ case AV_PICTURE_TYPE_I:
+ if (v->profile == PROFILE_ADVANCED)
+ vc1_decode_i_blocks_adv(v);
+ else
+ vc1_decode_i_blocks(v);
+ break;
+ case AV_PICTURE_TYPE_P:
+ if (v->p_frame_skipped)
+ vc1_decode_skip_blocks(v);
+ else
+ vc1_decode_p_blocks(v);
+ break;
+ case AV_PICTURE_TYPE_B:
+ if (v->bi_type) {
+ if (v->profile == PROFILE_ADVANCED)
+ vc1_decode_i_blocks_adv(v);
+ else
+ vc1_decode_i_blocks(v);
+ } else
+ vc1_decode_b_blocks(v);
+ break;
+ }
+ }
+}
diff --git a/libavcodec/vc1_loopfilter.c b/libavcodec/vc1_loopfilter.c
new file mode 100644
index 0000000..1b76d83
--- /dev/null
+++ b/libavcodec/vc1_loopfilter.c
@@ -0,0 +1,353 @@
+/*
+ * VC-1 and WMV3 decoder
+ * Copyright (c) 2011 Mashiat Sarker Shakkhar
+ * Copyright (c) 2006-2007 Konstantin Shishkov
+ * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * VC-1 and WMV3 loopfilter
+ */
+
+#include "avcodec.h"
+#include "mpegvideo.h"
+#include "vc1.h"
+#include "vc1dsp.h"
+
+void ff_vc1_loop_filter_iblk(VC1Context *v, int pq)
+{
+ MpegEncContext *s = &v->s;
+ int j;
+ if (!s->first_slice_line) {
+ v->vc1dsp.vc1_v_loop_filter16(s->dest[0], s->linesize, pq);
+ if (s->mb_x)
+ v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16 * s->linesize, s->linesize, pq);
+ v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16 * s->linesize + 8, s->linesize, pq);
+ for (j = 0; j < 2; j++) {
+ v->vc1dsp.vc1_v_loop_filter8(s->dest[j + 1], s->uvlinesize, pq);
+ if (s->mb_x)
+ v->vc1dsp.vc1_h_loop_filter8(s->dest[j + 1] - 8 * s->uvlinesize, s->uvlinesize, pq);
+ }
+ }
+ v->vc1dsp.vc1_v_loop_filter16(s->dest[0] + 8 * s->linesize, s->linesize, pq);
+
+ if (s->mb_y == s->end_mb_y - 1) {
+ if (s->mb_x) {
+ v->vc1dsp.vc1_h_loop_filter16(s->dest[0], s->linesize, pq);
+ v->vc1dsp.vc1_h_loop_filter8(s->dest[1], s->uvlinesize, pq);
+ v->vc1dsp.vc1_h_loop_filter8(s->dest[2], s->uvlinesize, pq);
+ }
+ v->vc1dsp.vc1_h_loop_filter16(s->dest[0] + 8, s->linesize, pq);
+ }
+}
+
+void ff_vc1_loop_filter_iblk_delayed(VC1Context *v, int pq)
+{
+ MpegEncContext *s = &v->s;
+ int j;
+
+ /* The loopfilter runs 1 row and 1 column behind the overlap filter, which
+ * means it runs two rows/cols behind the decoding loop. */
+ if (!s->first_slice_line) {
+ if (s->mb_x) {
+ if (s->mb_y >= s->start_mb_y + 2) {
+ v->vc1dsp.vc1_v_loop_filter16(s->dest[0] - 16 * s->linesize - 16, s->linesize, pq);
+
+ if (s->mb_x >= 2)
+ v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 32 * s->linesize - 16, s->linesize, pq);
+ v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 32 * s->linesize - 8, s->linesize, pq);
+ for (j = 0; j < 2; j++) {
+ v->vc1dsp.vc1_v_loop_filter8(s->dest[j + 1] - 8 * s->uvlinesize - 8, s->uvlinesize, pq);
+ if (s->mb_x >= 2) {
+ v->vc1dsp.vc1_h_loop_filter8(s->dest[j + 1] - 16 * s->uvlinesize - 8, s->uvlinesize, pq);
+ }
+ }
+ }
+ v->vc1dsp.vc1_v_loop_filter16(s->dest[0] - 8 * s->linesize - 16, s->linesize, pq);
+ }
+
+ if (s->mb_x == s->mb_width - 1) {
+ if (s->mb_y >= s->start_mb_y + 2) {
+ v->vc1dsp.vc1_v_loop_filter16(s->dest[0] - 16 * s->linesize, s->linesize, pq);
+
+ if (s->mb_x)
+ v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 32 * s->linesize, s->linesize, pq);
+ v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 32 * s->linesize + 8, s->linesize, pq);
+ for (j = 0; j < 2; j++) {
+ v->vc1dsp.vc1_v_loop_filter8(s->dest[j + 1] - 8 * s->uvlinesize, s->uvlinesize, pq);
+ if (s->mb_x >= 2) {
+ v->vc1dsp.vc1_h_loop_filter8(s->dest[j + 1] - 16 * s->uvlinesize, s->uvlinesize, pq);
+ }
+ }
+ }
+ v->vc1dsp.vc1_v_loop_filter16(s->dest[0] - 8 * s->linesize, s->linesize, pq);
+ }
+
+ if (s->mb_y == s->end_mb_y) {
+ if (s->mb_x) {
+ if (s->mb_x >= 2)
+ v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16 * s->linesize - 16, s->linesize, pq);
+ v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16 * s->linesize - 8, s->linesize, pq);
+ if (s->mb_x >= 2) {
+ for (j = 0; j < 2; j++) {
+ v->vc1dsp.vc1_h_loop_filter8(s->dest[j + 1] - 8 * s->uvlinesize - 8, s->uvlinesize, pq);
+ }
+ }
+ }
+
+ if (s->mb_x == s->mb_width - 1) {
+ if (s->mb_x)
+ v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16 * s->linesize, s->linesize, pq);
+ v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16 * s->linesize + 8, s->linesize, pq);
+ if (s->mb_x) {
+ for (j = 0; j < 2; j++) {
+ v->vc1dsp.vc1_h_loop_filter8(s->dest[j + 1] - 8 * s->uvlinesize, s->uvlinesize, pq);
+ }
+ }
+ }
+ }
+ }
+}
+
+void ff_vc1_smooth_overlap_filter_iblk(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+ int mb_pos;
+
+ if (v->condover == CONDOVER_NONE)
+ return;
+
+ mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+
+ /* Within a MB, the horizontal overlap always runs before the vertical.
+ * To accomplish that, we run the H on left and internal borders of the
+ * currently decoded MB. Then, we wait for the next overlap iteration
+ * to do H overlap on the right edge of this MB, before moving over and
+ * running the V overlap. Therefore, the V overlap makes us trail by one
+ * MB col and the H overlap filter makes us trail by one MB row. This
+ * is reflected in the time at which we run the put_pixels loop. */
+ if (v->condover == CONDOVER_ALL || v->pq >= 9 || v->over_flags_plane[mb_pos]) {
+ if (s->mb_x && (v->condover == CONDOVER_ALL || v->pq >= 9 ||
+ v->over_flags_plane[mb_pos - 1])) {
+ v->vc1dsp.vc1_h_s_overlap(v->block[v->left_blk_idx][1],
+ v->block[v->cur_blk_idx][0]);
+ v->vc1dsp.vc1_h_s_overlap(v->block[v->left_blk_idx][3],
+ v->block[v->cur_blk_idx][2]);
+ if (!(s->flags & CODEC_FLAG_GRAY)) {
+ v->vc1dsp.vc1_h_s_overlap(v->block[v->left_blk_idx][4],
+ v->block[v->cur_blk_idx][4]);
+ v->vc1dsp.vc1_h_s_overlap(v->block[v->left_blk_idx][5],
+ v->block[v->cur_blk_idx][5]);
+ }
+ }
+ v->vc1dsp.vc1_h_s_overlap(v->block[v->cur_blk_idx][0],
+ v->block[v->cur_blk_idx][1]);
+ v->vc1dsp.vc1_h_s_overlap(v->block[v->cur_blk_idx][2],
+ v->block[v->cur_blk_idx][3]);
+
+ if (s->mb_x == s->mb_width - 1) {
+ if (!s->first_slice_line && (v->condover == CONDOVER_ALL || v->pq >= 9 ||
+ v->over_flags_plane[mb_pos - s->mb_stride])) {
+ v->vc1dsp.vc1_v_s_overlap(v->block[v->top_blk_idx][2],
+ v->block[v->cur_blk_idx][0]);
+ v->vc1dsp.vc1_v_s_overlap(v->block[v->top_blk_idx][3],
+ v->block[v->cur_blk_idx][1]);
+ if (!(s->flags & CODEC_FLAG_GRAY)) {
+ v->vc1dsp.vc1_v_s_overlap(v->block[v->top_blk_idx][4],
+ v->block[v->cur_blk_idx][4]);
+ v->vc1dsp.vc1_v_s_overlap(v->block[v->top_blk_idx][5],
+ v->block[v->cur_blk_idx][5]);
+ }
+ }
+ v->vc1dsp.vc1_v_s_overlap(v->block[v->cur_blk_idx][0],
+ v->block[v->cur_blk_idx][2]);
+ v->vc1dsp.vc1_v_s_overlap(v->block[v->cur_blk_idx][1],
+ v->block[v->cur_blk_idx][3]);
+ }
+ }
+ if (s->mb_x && (v->condover == CONDOVER_ALL || v->over_flags_plane[mb_pos - 1])) {
+ if (!s->first_slice_line && (v->condover == CONDOVER_ALL || v->pq >= 9 ||
+ v->over_flags_plane[mb_pos - s->mb_stride - 1])) {
+ v->vc1dsp.vc1_v_s_overlap(v->block[v->topleft_blk_idx][2],
+ v->block[v->left_blk_idx][0]);
+ v->vc1dsp.vc1_v_s_overlap(v->block[v->topleft_blk_idx][3],
+ v->block[v->left_blk_idx][1]);
+ if (!(s->flags & CODEC_FLAG_GRAY)) {
+ v->vc1dsp.vc1_v_s_overlap(v->block[v->topleft_blk_idx][4],
+ v->block[v->left_blk_idx][4]);
+ v->vc1dsp.vc1_v_s_overlap(v->block[v->topleft_blk_idx][5],
+ v->block[v->left_blk_idx][5]);
+ }
+ }
+ v->vc1dsp.vc1_v_s_overlap(v->block[v->left_blk_idx][0],
+ v->block[v->left_blk_idx][2]);
+ v->vc1dsp.vc1_v_s_overlap(v->block[v->left_blk_idx][1],
+ v->block[v->left_blk_idx][3]);
+ }
+}
+
+static av_always_inline void vc1_apply_p_v_loop_filter(VC1Context *v, int block_num)
+{
+ MpegEncContext *s = &v->s;
+ int mb_cbp = v->cbp[s->mb_x - s->mb_stride],
+ block_cbp = mb_cbp >> (block_num * 4), bottom_cbp,
+ mb_is_intra = v->is_intra[s->mb_x - s->mb_stride],
+ block_is_intra = mb_is_intra >> (block_num * 4), bottom_is_intra;
+ int idx, linesize = block_num > 3 ? s->uvlinesize : s->linesize, ttblk;
+ uint8_t *dst;
+
+ if (block_num > 3) {
+ dst = s->dest[block_num - 3];
+ } else {
+ dst = s->dest[0] + (block_num & 1) * 8 + ((block_num & 2) * 4 - 8) * linesize;
+ }
+ if (s->mb_y != s->end_mb_y || block_num < 2) {
+ int16_t (*mv)[2];
+ int mv_stride;
+
+ if (block_num > 3) {
+ bottom_cbp = v->cbp[s->mb_x] >> (block_num * 4);
+ bottom_is_intra = v->is_intra[s->mb_x] >> (block_num * 4);
+ mv = &v->luma_mv[s->mb_x - s->mb_stride];
+ mv_stride = s->mb_stride;
+ } else {
+ bottom_cbp = (block_num < 2) ? (mb_cbp >> ((block_num + 2) * 4))
+ : (v->cbp[s->mb_x] >> ((block_num - 2) * 4));
+ bottom_is_intra = (block_num < 2) ? (mb_is_intra >> ((block_num + 2) * 4))
+ : (v->is_intra[s->mb_x] >> ((block_num - 2) * 4));
+ mv_stride = s->b8_stride;
+ mv = &s->current_picture.motion_val[0][s->block_index[block_num] - 2 * mv_stride];
+ }
+
+ if (bottom_is_intra & 1 || block_is_intra & 1 ||
+ mv[0][0] != mv[mv_stride][0] || mv[0][1] != mv[mv_stride][1]) {
+ v->vc1dsp.vc1_v_loop_filter8(dst, linesize, v->pq);
+ } else {
+ idx = ((bottom_cbp >> 2) | block_cbp) & 3;
+ if (idx == 3) {
+ v->vc1dsp.vc1_v_loop_filter8(dst, linesize, v->pq);
+ } else if (idx) {
+ if (idx == 1)
+ v->vc1dsp.vc1_v_loop_filter4(dst + 4, linesize, v->pq);
+ else
+ v->vc1dsp.vc1_v_loop_filter4(dst, linesize, v->pq);
+ }
+ }
+ }
+
+ dst -= 4 * linesize;
+ ttblk = (v->ttblk[s->mb_x - s->mb_stride] >> (block_num * 4)) & 0xF;
+ if (ttblk == TT_4X4 || ttblk == TT_8X4) {
+ idx = (block_cbp | (block_cbp >> 2)) & 3;
+ if (idx == 3) {
+ v->vc1dsp.vc1_v_loop_filter8(dst, linesize, v->pq);
+ } else if (idx) {
+ if (idx == 1)
+ v->vc1dsp.vc1_v_loop_filter4(dst + 4, linesize, v->pq);
+ else
+ v->vc1dsp.vc1_v_loop_filter4(dst, linesize, v->pq);
+ }
+ }
+}
+
+static av_always_inline void vc1_apply_p_h_loop_filter(VC1Context *v, int block_num)
+{
+ MpegEncContext *s = &v->s;
+ int mb_cbp = v->cbp[s->mb_x - 1 - s->mb_stride],
+ block_cbp = mb_cbp >> (block_num * 4), right_cbp,
+ mb_is_intra = v->is_intra[s->mb_x - 1 - s->mb_stride],
+ block_is_intra = mb_is_intra >> (block_num * 4), right_is_intra;
+ int idx, linesize = block_num > 3 ? s->uvlinesize : s->linesize, ttblk;
+ uint8_t *dst;
+
+ if (block_num > 3) {
+ dst = s->dest[block_num - 3] - 8 * linesize;
+ } else {
+ dst = s->dest[0] + (block_num & 1) * 8 + ((block_num & 2) * 4 - 16) * linesize - 8;
+ }
+
+ if (s->mb_x != s->mb_width || !(block_num & 5)) {
+ int16_t (*mv)[2];
+
+ if (block_num > 3) {
+ right_cbp = v->cbp[s->mb_x - s->mb_stride] >> (block_num * 4);
+ right_is_intra = v->is_intra[s->mb_x - s->mb_stride] >> (block_num * 4);
+ mv = &v->luma_mv[s->mb_x - s->mb_stride - 1];
+ } else {
+ right_cbp = (block_num & 1) ? (v->cbp[s->mb_x - s->mb_stride] >> ((block_num - 1) * 4))
+ : (mb_cbp >> ((block_num + 1) * 4));
+ right_is_intra = (block_num & 1) ? (v->is_intra[s->mb_x - s->mb_stride] >> ((block_num - 1) * 4))
+ : (mb_is_intra >> ((block_num + 1) * 4));
+ mv = &s->current_picture.motion_val[0][s->block_index[block_num] - s->b8_stride * 2 - 2];
+ }
+ if (block_is_intra & 1 || right_is_intra & 1 || mv[0][0] != mv[1][0] || mv[0][1] != mv[1][1]) {
+ v->vc1dsp.vc1_h_loop_filter8(dst, linesize, v->pq);
+ } else {
+ idx = ((right_cbp >> 1) | block_cbp) & 5; // FIXME check
+ if (idx == 5) {
+ v->vc1dsp.vc1_h_loop_filter8(dst, linesize, v->pq);
+ } else if (idx) {
+ if (idx == 1)
+ v->vc1dsp.vc1_h_loop_filter4(dst + 4 * linesize, linesize, v->pq);
+ else
+ v->vc1dsp.vc1_h_loop_filter4(dst, linesize, v->pq);
+ }
+ }
+ }
+
+ dst -= 4;
+ ttblk = (v->ttblk[s->mb_x - s->mb_stride - 1] >> (block_num * 4)) & 0xf;
+ if (ttblk == TT_4X4 || ttblk == TT_4X8) {
+ idx = (block_cbp | (block_cbp >> 1)) & 5;
+ if (idx == 5) {
+ v->vc1dsp.vc1_h_loop_filter8(dst, linesize, v->pq);
+ } else if (idx) {
+ if (idx == 1)
+ v->vc1dsp.vc1_h_loop_filter4(dst + linesize * 4, linesize, v->pq);
+ else
+ v->vc1dsp.vc1_h_loop_filter4(dst, linesize, v->pq);
+ }
+ }
+}
+
+void ff_vc1_apply_p_loop_filter(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+ int i;
+
+ for (i = 0; i < 6; i++) {
+ vc1_apply_p_v_loop_filter(v, i);
+ }
+
+ /* V always precedes H, therefore we run H one MB before V;
+ * at the end of a row, we catch up to complete the row */
+ if (s->mb_x) {
+ for (i = 0; i < 6; i++) {
+ vc1_apply_p_h_loop_filter(v, i);
+ }
+ if (s->mb_x == s->mb_width - 1) {
+ s->mb_x++;
+ ff_update_block_index(s);
+ for (i = 0; i < 6; i++) {
+ vc1_apply_p_h_loop_filter(v, i);
+ }
+ }
+ }
+}
diff --git a/libavcodec/vc1_mc.c b/libavcodec/vc1_mc.c
new file mode 100644
index 0000000..54c4e72
--- /dev/null
+++ b/libavcodec/vc1_mc.c
@@ -0,0 +1,948 @@
+/*
+ * VC-1 and WMV3 decoder
+ * Copyright (c) 2011 Mashiat Sarker Shakkhar
+ * Copyright (c) 2006-2007 Konstantin Shishkov
+ * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * VC-1 and WMV3 block decoding routines
+ */
+
+#include "avcodec.h"
+#include "h264chroma.h"
+#include "mathops.h"
+#include "mpegvideo.h"
+#include "vc1.h"
+
+/** Do motion compensation over 1 macroblock
+ * Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
+ */
+void ff_vc1_mc_1mv(VC1Context *v, int dir)
+{
+ MpegEncContext *s = &v->s;
+ H264ChromaContext *h264chroma = &v->h264chroma;
+ uint8_t *srcY, *srcU, *srcV;
+ int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
+ int v_edge_pos = s->v_edge_pos >> v->field_mode;
+ int i;
+ uint8_t (*luty)[256], (*lutuv)[256];
+ int use_ic;
+
+ if ((!v->field_mode ||
+ (v->ref_field_type[dir] == 1 && v->cur_field_type == 1)) &&
+ !v->s.last_picture.f->data[0])
+ return;
+
+ mx = s->mv[dir][0][0];
+ my = s->mv[dir][0][1];
+
+ // store motion vectors for further use in B frames
+ if (s->pict_type == AV_PICTURE_TYPE_P) {
+ for (i = 0; i < 4; i++) {
+ s->current_picture.motion_val[1][s->block_index[i] + v->blocks_off][0] = mx;
+ s->current_picture.motion_val[1][s->block_index[i] + v->blocks_off][1] = my;
+ }
+ }
+
+ uvmx = (mx + ((mx & 3) == 3)) >> 1;
+ uvmy = (my + ((my & 3) == 3)) >> 1;
+ v->luma_mv[s->mb_x][0] = uvmx;
+ v->luma_mv[s->mb_x][1] = uvmy;
+
+ if (v->field_mode &&
+ v->cur_field_type != v->ref_field_type[dir]) {
+ my = my - 2 + 4 * v->cur_field_type;
+ uvmy = uvmy - 2 + 4 * v->cur_field_type;
+ }
+
+ // fastuvmc shall be ignored for interlaced frame picture
+ if (v->fastuvmc && (v->fcm != ILACE_FRAME)) {
+ uvmx = uvmx + ((uvmx < 0) ? (uvmx & 1) : -(uvmx & 1));
+ uvmy = uvmy + ((uvmy < 0) ? (uvmy & 1) : -(uvmy & 1));
+ }
+ if (!dir) {
+ if (v->field_mode && (v->cur_field_type != v->ref_field_type[dir]) && v->second_field) {
+ srcY = s->current_picture.f->data[0];
+ srcU = s->current_picture.f->data[1];
+ srcV = s->current_picture.f->data[2];
+ luty = v->curr_luty;
+ lutuv = v->curr_lutuv;
+ use_ic = v->curr_use_ic;
+ } else {
+ srcY = s->last_picture.f->data[0];
+ srcU = s->last_picture.f->data[1];
+ srcV = s->last_picture.f->data[2];
+ luty = v->last_luty;
+ lutuv = v->last_lutuv;
+ use_ic = v->last_use_ic;
+ }
+ } else {
+ srcY = s->next_picture.f->data[0];
+ srcU = s->next_picture.f->data[1];
+ srcV = s->next_picture.f->data[2];
+ luty = v->next_luty;
+ lutuv = v->next_lutuv;
+ use_ic = v->next_use_ic;
+ }
+
+ if (!srcY || !srcU) {
+ av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
+ return;
+ }
+
+ src_x = s->mb_x * 16 + (mx >> 2);
+ src_y = s->mb_y * 16 + (my >> 2);
+ uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
+ uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
+
+ if (v->profile != PROFILE_ADVANCED) {
+ src_x = av_clip( src_x, -16, s->mb_width * 16);
+ src_y = av_clip( src_y, -16, s->mb_height * 16);
+ uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
+ uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
+ } else {
+ src_x = av_clip( src_x, -17, s->avctx->coded_width);
+ src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
+ uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
+ uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
+ }
+
+ srcY += src_y * s->linesize + src_x;
+ srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
+ srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
+
+ if (v->field_mode && v->ref_field_type[dir]) {
+ srcY += s->current_picture_ptr->f->linesize[0];
+ srcU += s->current_picture_ptr->f->linesize[1];
+ srcV += s->current_picture_ptr->f->linesize[2];
+ }
+
+ /* for grayscale we should not try to read from unknown area */
+ if (s->flags & CODEC_FLAG_GRAY) {
+ srcU = s->edge_emu_buffer + 18 * s->linesize;
+ srcV = s->edge_emu_buffer + 18 * s->linesize;
+ }
+
+ if (v->rangeredfrm || use_ic
+ || s->h_edge_pos < 22 || v_edge_pos < 22
+ || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel * 3
+ || (unsigned)(src_y - 1) > v_edge_pos - (my&3) - 16 - 3) {
+ uint8_t *uvbuf = s->edge_emu_buffer + 19 * s->linesize;
+
+ srcY -= s->mspel * (1 + s->linesize);
+ s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
+ s->linesize, s->linesize,
+ 17 + s->mspel * 2, 17 + s->mspel * 2,
+ src_x - s->mspel, src_y - s->mspel,
+ s->h_edge_pos, v_edge_pos);
+ srcY = s->edge_emu_buffer;
+ s->vdsp.emulated_edge_mc(uvbuf, srcU,
+ s->uvlinesize, s->uvlinesize,
+ 8 + 1, 8 + 1,
+ uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, v_edge_pos >> 1);
+ s->vdsp.emulated_edge_mc(uvbuf + 16, srcV,
+ s->uvlinesize, s->uvlinesize,
+ 8 + 1, 8 + 1,
+ uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, v_edge_pos >> 1);
+ srcU = uvbuf;
+ srcV = uvbuf + 16;
+ /* if we deal with range reduction we need to scale source blocks */
+ if (v->rangeredfrm) {
+ int i, j;
+ uint8_t *src, *src2;
+
+ src = srcY;
+ for (j = 0; j < 17 + s->mspel * 2; j++) {
+ for (i = 0; i < 17 + s->mspel * 2; i++)
+ src[i] = ((src[i] - 128) >> 1) + 128;
+ src += s->linesize;
+ }
+ src = srcU;
+ src2 = srcV;
+ for (j = 0; j < 9; j++) {
+ for (i = 0; i < 9; i++) {
+ src[i] = ((src[i] - 128) >> 1) + 128;
+ src2[i] = ((src2[i] - 128) >> 1) + 128;
+ }
+ src += s->uvlinesize;
+ src2 += s->uvlinesize;
+ }
+ }
+ /* if we deal with intensity compensation we need to scale source blocks */
+ if (use_ic) {
+ int i, j;
+ uint8_t *src, *src2;
+
+ src = srcY;
+ for (j = 0; j < 17 + s->mspel * 2; j++) {
+ int f = v->field_mode ? v->ref_field_type[dir] : ((j + src_y - s->mspel) & 1) ;
+ for (i = 0; i < 17 + s->mspel * 2; i++)
+ src[i] = luty[f][src[i]];
+ src += s->linesize;
+ }
+ src = srcU;
+ src2 = srcV;
+ for (j = 0; j < 9; j++) {
+ int f = v->field_mode ? v->ref_field_type[dir] : ((j + uvsrc_y) & 1);
+ for (i = 0; i < 9; i++) {
+ src[i] = lutuv[f][src[i]];
+ src2[i] = lutuv[f][src2[i]];
+ }
+ src += s->uvlinesize;
+ src2 += s->uvlinesize;
+ }
+ }
+ srcY += s->mspel * (1 + s->linesize);
+ }
+
+ if (s->mspel) {
+ dxy = ((my & 3) << 2) | (mx & 3);
+ v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd);
+ v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
+ srcY += s->linesize * 8;
+ v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd);
+ v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
+ } else { // hpel mc - always used for luma
+ dxy = (my & 2) | ((mx & 2) >> 1);
+ if (!v->rnd)
+ s->hdsp.put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
+ else
+ s->hdsp.put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
+ }
+
+ if (s->flags & CODEC_FLAG_GRAY) return;
+ /* Chroma MC always uses qpel bilinear */
+ uvmx = (uvmx & 3) << 1;
+ uvmy = (uvmy & 3) << 1;
+ if (!v->rnd) {
+ h264chroma->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
+ h264chroma->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
+ } else {
+ v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
+ v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
+ }
+}
+
+static inline int median4(int a, int b, int c, int d)
+{
+ if (a < b) {
+ if (c < d) return (FFMIN(b, d) + FFMAX(a, c)) / 2;
+ else return (FFMIN(b, c) + FFMAX(a, d)) / 2;
+ } else {
+ if (c < d) return (FFMIN(a, d) + FFMAX(b, c)) / 2;
+ else return (FFMIN(a, c) + FFMAX(b, d)) / 2;
+ }
+}
+
+/** Do motion compensation for 4-MV macroblock - luminance block
+ */
+void ff_vc1_mc_4mv_luma(VC1Context *v, int n, int dir, int avg)
+{
+ MpegEncContext *s = &v->s;
+ uint8_t *srcY;
+ int dxy, mx, my, src_x, src_y;
+ int off;
+ int fieldmv = (v->fcm == ILACE_FRAME) ? v->blk_mv_type[s->block_index[n]] : 0;
+ int v_edge_pos = s->v_edge_pos >> v->field_mode;
+ uint8_t (*luty)[256];
+ int use_ic;
+
+ if ((!v->field_mode ||
+ (v->ref_field_type[dir] == 1 && v->cur_field_type == 1)) &&
+ !v->s.last_picture.f->data[0])
+ return;
+
+ mx = s->mv[dir][n][0];
+ my = s->mv[dir][n][1];
+
+ if (!dir) {
+ if (v->field_mode && (v->cur_field_type != v->ref_field_type[dir]) && v->second_field) {
+ srcY = s->current_picture.f->data[0];
+ luty = v->curr_luty;
+ use_ic = v->curr_use_ic;
+ } else {
+ srcY = s->last_picture.f->data[0];
+ luty = v->last_luty;
+ use_ic = v->last_use_ic;
+ }
+ } else {
+ srcY = s->next_picture.f->data[0];
+ luty = v->next_luty;
+ use_ic = v->next_use_ic;
+ }
+
+ if (!srcY) {
+ av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
+ return;
+ }
+
+ if (v->field_mode) {
+ if (v->cur_field_type != v->ref_field_type[dir])
+ my = my - 2 + 4 * v->cur_field_type;
+ }
+
+ if (s->pict_type == AV_PICTURE_TYPE_P && n == 3 && v->field_mode) {
+ int same_count = 0, opp_count = 0, k;
+ int chosen_mv[2][4][2], f;
+ int tx, ty;
+ for (k = 0; k < 4; k++) {
+ f = v->mv_f[0][s->block_index[k] + v->blocks_off];
+ chosen_mv[f][f ? opp_count : same_count][0] = s->mv[0][k][0];
+ chosen_mv[f][f ? opp_count : same_count][1] = s->mv[0][k][1];
+ opp_count += f;
+ same_count += 1 - f;
+ }
+ f = opp_count > same_count;
+ switch (f ? opp_count : same_count) {
+ case 4:
+ tx = median4(chosen_mv[f][0][0], chosen_mv[f][1][0],
+ chosen_mv[f][2][0], chosen_mv[f][3][0]);
+ ty = median4(chosen_mv[f][0][1], chosen_mv[f][1][1],
+ chosen_mv[f][2][1], chosen_mv[f][3][1]);
+ break;
+ case 3:
+ tx = mid_pred(chosen_mv[f][0][0], chosen_mv[f][1][0], chosen_mv[f][2][0]);
+ ty = mid_pred(chosen_mv[f][0][1], chosen_mv[f][1][1], chosen_mv[f][2][1]);
+ break;
+ case 2:
+ tx = (chosen_mv[f][0][0] + chosen_mv[f][1][0]) / 2;
+ ty = (chosen_mv[f][0][1] + chosen_mv[f][1][1]) / 2;
+ break;
+ }
+ s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = tx;
+ s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = ty;
+ for (k = 0; k < 4; k++)
+ v->mv_f[1][s->block_index[k] + v->blocks_off] = f;
+ }
+
+ if (v->fcm == ILACE_FRAME) { // not sure if needed for other types of picture
+ int qx, qy;
+ int width = s->avctx->coded_width;
+ int height = s->avctx->coded_height >> 1;
+ if (s->pict_type == AV_PICTURE_TYPE_P) {
+ s->current_picture.motion_val[1][s->block_index[n] + v->blocks_off][0] = mx;
+ s->current_picture.motion_val[1][s->block_index[n] + v->blocks_off][1] = my;
+ }
+ qx = (s->mb_x * 16) + (mx >> 2);
+ qy = (s->mb_y * 8) + (my >> 3);
+
+ if (qx < -17)
+ mx -= 4 * (qx + 17);
+ else if (qx > width)
+ mx -= 4 * (qx - width);
+ if (qy < -18)
+ my -= 8 * (qy + 18);
+ else if (qy > height + 1)
+ my -= 8 * (qy - height - 1);
+ }
+
+ if ((v->fcm == ILACE_FRAME) && fieldmv)
+ off = ((n > 1) ? s->linesize : 0) + (n & 1) * 8;
+ else
+ off = s->linesize * 4 * (n & 2) + (n & 1) * 8;
+
+ src_x = s->mb_x * 16 + (n & 1) * 8 + (mx >> 2);
+ if (!fieldmv)
+ src_y = s->mb_y * 16 + (n & 2) * 4 + (my >> 2);
+ else
+ src_y = s->mb_y * 16 + ((n > 1) ? 1 : 0) + (my >> 2);
+
+ if (v->profile != PROFILE_ADVANCED) {
+ src_x = av_clip(src_x, -16, s->mb_width * 16);
+ src_y = av_clip(src_y, -16, s->mb_height * 16);
+ } else {
+ src_x = av_clip(src_x, -17, s->avctx->coded_width);
+ if (v->fcm == ILACE_FRAME) {
+ if (src_y & 1)
+ src_y = av_clip(src_y, -17, s->avctx->coded_height + 1);
+ else
+ src_y = av_clip(src_y, -18, s->avctx->coded_height);
+ } else {
+ src_y = av_clip(src_y, -18, s->avctx->coded_height + 1);
+ }
+ }
+
+ srcY += src_y * s->linesize + src_x;
+ if (v->field_mode && v->ref_field_type[dir])
+ srcY += s->current_picture_ptr->f->linesize[0];
+
+ if (fieldmv && !(src_y & 1))
+ v_edge_pos--;
+ if (fieldmv && (src_y & 1) && src_y < 4)
+ src_y--;
+ if (v->rangeredfrm || use_ic
+ || s->h_edge_pos < 13 || v_edge_pos < 23
+ || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx & 3) - 8 - s->mspel * 2
+ || (unsigned)(src_y - (s->mspel << fieldmv)) > v_edge_pos - (my & 3) - ((8 + s->mspel * 2) << fieldmv)) {
+ srcY -= s->mspel * (1 + (s->linesize << fieldmv));
+ /* check emulate edge stride and offset */
+ s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
+ s->linesize, s->linesize,
+ 9 + s->mspel * 2, (9 + s->mspel * 2) << fieldmv,
+ src_x - s->mspel, src_y - (s->mspel << fieldmv),
+ s->h_edge_pos, v_edge_pos);
+ srcY = s->edge_emu_buffer;
+ /* if we deal with range reduction we need to scale source blocks */
+ if (v->rangeredfrm) {
+ int i, j;
+ uint8_t *src;
+
+ src = srcY;
+ for (j = 0; j < 9 + s->mspel * 2; j++) {
+ for (i = 0; i < 9 + s->mspel * 2; i++)
+ src[i] = ((src[i] - 128) >> 1) + 128;
+ src += s->linesize << fieldmv;
+ }
+ }
+ /* if we deal with intensity compensation we need to scale source blocks */
+ if (use_ic) {
+ int i, j;
+ uint8_t *src;
+
+ src = srcY;
+ for (j = 0; j < 9 + s->mspel * 2; j++) {
+ int f = v->field_mode ? v->ref_field_type[dir] : (((j<<fieldmv)+src_y - (s->mspel << fieldmv)) & 1);
+ for (i = 0; i < 9 + s->mspel * 2; i++)
+ src[i] = luty[f][src[i]];
+ src += s->linesize << fieldmv;
+ }
+ }
+ srcY += s->mspel * (1 + (s->linesize << fieldmv));
+ }
+
+ if (s->mspel) {
+ dxy = ((my & 3) << 2) | (mx & 3);
+ if (avg)
+ v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize << fieldmv, v->rnd);
+ else
+ v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize << fieldmv, v->rnd);
+ } else { // hpel mc - always used for luma
+ dxy = (my & 2) | ((mx & 2) >> 1);
+ if (!v->rnd)
+ s->hdsp.put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
+ else
+ s->hdsp.put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
+ }
+}
+
+static av_always_inline int get_chroma_mv(int *mvx, int *mvy, int *a, int flag, int *tx, int *ty)
+{
+ int idx, i;
+ static const int count[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};
+
+ idx = ((a[3] != flag) << 3)
+ | ((a[2] != flag) << 2)
+ | ((a[1] != flag) << 1)
+ | (a[0] != flag);
+ if (!idx) {
+ *tx = median4(mvx[0], mvx[1], mvx[2], mvx[3]);
+ *ty = median4(mvy[0], mvy[1], mvy[2], mvy[3]);
+ return 4;
+ } else if (count[idx] == 1) {
+ switch (idx) {
+ case 0x1:
+ *tx = mid_pred(mvx[1], mvx[2], mvx[3]);
+ *ty = mid_pred(mvy[1], mvy[2], mvy[3]);
+ return 3;
+ case 0x2:
+ *tx = mid_pred(mvx[0], mvx[2], mvx[3]);
+ *ty = mid_pred(mvy[0], mvy[2], mvy[3]);
+ return 3;
+ case 0x4:
+ *tx = mid_pred(mvx[0], mvx[1], mvx[3]);
+ *ty = mid_pred(mvy[0], mvy[1], mvy[3]);
+ return 3;
+ case 0x8:
+ *tx = mid_pred(mvx[0], mvx[1], mvx[2]);
+ *ty = mid_pred(mvy[0], mvy[1], mvy[2]);
+ return 3;
+ }
+ } else if (count[idx] == 2) {
+ int t1 = 0, t2 = 0;
+ for (i = 0; i < 3; i++)
+ if (!a[i]) {
+ t1 = i;
+ break;
+ }
+ for (i = t1 + 1; i < 4; i++)
+ if (!a[i]) {
+ t2 = i;
+ break;
+ }
+ *tx = (mvx[t1] + mvx[t2]) / 2;
+ *ty = (mvy[t1] + mvy[t2]) / 2;
+ return 2;
+ } else {
+ return 0;
+ }
+ return -1;
+}
+
+/** Do motion compensation for 4-MV macroblock - both chroma blocks
+ */
+void ff_vc1_mc_4mv_chroma(VC1Context *v, int dir)
+{
+ MpegEncContext *s = &v->s;
+ H264ChromaContext *h264chroma = &v->h264chroma;
+ uint8_t *srcU, *srcV;
+ int uvmx, uvmy, uvsrc_x, uvsrc_y;
+ int k, tx = 0, ty = 0;
+ int mvx[4], mvy[4], intra[4], mv_f[4];
+ int valid_count;
+ int chroma_ref_type = v->cur_field_type;
+ int v_edge_pos = s->v_edge_pos >> v->field_mode;
+ uint8_t (*lutuv)[256];
+ int use_ic;
+
+ if (!v->field_mode && !v->s.last_picture.f->data[0])
+ return;
+ if (s->flags & CODEC_FLAG_GRAY)
+ return;
+
+ for (k = 0; k < 4; k++) {
+ mvx[k] = s->mv[dir][k][0];
+ mvy[k] = s->mv[dir][k][1];
+ intra[k] = v->mb_type[0][s->block_index[k]];
+ if (v->field_mode)
+ mv_f[k] = v->mv_f[dir][s->block_index[k] + v->blocks_off];
+ }
+
+ /* calculate chroma MV vector from four luma MVs */
+ if (!v->field_mode || (v->field_mode && !v->numref)) {
+ valid_count = get_chroma_mv(mvx, mvy, intra, 0, &tx, &ty);
+ chroma_ref_type = v->reffield;
+ if (!valid_count) {
+ s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0;
+ s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0;
+ v->luma_mv[s->mb_x][0] = v->luma_mv[s->mb_x][1] = 0;
+ return; //no need to do MC for intra blocks
+ }
+ } else {
+ int dominant = 0;
+ if (mv_f[0] + mv_f[1] + mv_f[2] + mv_f[3] > 2)
+ dominant = 1;
+ valid_count = get_chroma_mv(mvx, mvy, mv_f, dominant, &tx, &ty);
+ if (dominant)
+ chroma_ref_type = !v->cur_field_type;
+ }
+ if (v->field_mode && chroma_ref_type == 1 && v->cur_field_type == 1 && !v->s.last_picture.f->data[0])
+ return;
+ s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = tx;
+ s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = ty;
+ uvmx = (tx + ((tx & 3) == 3)) >> 1;
+ uvmy = (ty + ((ty & 3) == 3)) >> 1;
+
+ v->luma_mv[s->mb_x][0] = uvmx;
+ v->luma_mv[s->mb_x][1] = uvmy;
+
+ if (v->fastuvmc) {
+ uvmx = uvmx + ((uvmx < 0) ? (uvmx & 1) : -(uvmx & 1));
+ uvmy = uvmy + ((uvmy < 0) ? (uvmy & 1) : -(uvmy & 1));
+ }
+ // Field conversion bias
+ if (v->cur_field_type != chroma_ref_type)
+ uvmy += 2 - 4 * chroma_ref_type;
+
+ uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
+ uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
+
+ if (v->profile != PROFILE_ADVANCED) {
+ uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
+ uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
+ } else {
+ uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
+ uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
+ }
+
+ if (!dir) {
+ if (v->field_mode && (v->cur_field_type != chroma_ref_type) && v->second_field) {
+ srcU = s->current_picture.f->data[1];
+ srcV = s->current_picture.f->data[2];
+ lutuv = v->curr_lutuv;
+ use_ic = v->curr_use_ic;
+ } else {
+ srcU = s->last_picture.f->data[1];
+ srcV = s->last_picture.f->data[2];
+ lutuv = v->last_lutuv;
+ use_ic = v->last_use_ic;
+ }
+ } else {
+ srcU = s->next_picture.f->data[1];
+ srcV = s->next_picture.f->data[2];
+ lutuv = v->next_lutuv;
+ use_ic = v->next_use_ic;
+ }
+
+ if (!srcU) {
+ av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
+ return;
+ }
+
+ srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
+ srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
+
+ if (v->field_mode) {
+ if (chroma_ref_type) {
+ srcU += s->current_picture_ptr->f->linesize[1];
+ srcV += s->current_picture_ptr->f->linesize[2];
+ }
+ }
+
+ if (v->rangeredfrm || use_ic
+ || s->h_edge_pos < 18 || v_edge_pos < 18
+ || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
+ || (unsigned)uvsrc_y > (v_edge_pos >> 1) - 9) {
+ s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcU,
+ s->uvlinesize, s->uvlinesize,
+ 8 + 1, 8 + 1, uvsrc_x, uvsrc_y,
+ s->h_edge_pos >> 1, v_edge_pos >> 1);
+ s->vdsp.emulated_edge_mc(s->edge_emu_buffer + 16, srcV,
+ s->uvlinesize, s->uvlinesize,
+ 8 + 1, 8 + 1, uvsrc_x, uvsrc_y,
+ s->h_edge_pos >> 1, v_edge_pos >> 1);
+ srcU = s->edge_emu_buffer;
+ srcV = s->edge_emu_buffer + 16;
+
+ /* if we deal with range reduction we need to scale source blocks */
+ if (v->rangeredfrm) {
+ int i, j;
+ uint8_t *src, *src2;
+
+ src = srcU;
+ src2 = srcV;
+ for (j = 0; j < 9; j++) {
+ for (i = 0; i < 9; i++) {
+ src[i] = ((src[i] - 128) >> 1) + 128;
+ src2[i] = ((src2[i] - 128) >> 1) + 128;
+ }
+ src += s->uvlinesize;
+ src2 += s->uvlinesize;
+ }
+ }
+ /* if we deal with intensity compensation we need to scale source blocks */
+ if (use_ic) {
+ int i, j;
+ uint8_t *src, *src2;
+
+ src = srcU;
+ src2 = srcV;
+ for (j = 0; j < 9; j++) {
+ int f = v->field_mode ? chroma_ref_type : ((j + uvsrc_y) & 1);
+ for (i = 0; i < 9; i++) {
+ src[i] = lutuv[f][src[i]];
+ src2[i] = lutuv[f][src2[i]];
+ }
+ src += s->uvlinesize;
+ src2 += s->uvlinesize;
+ }
+ }
+ }
+
+ /* Chroma MC always uses qpel bilinear */
+ uvmx = (uvmx & 3) << 1;
+ uvmy = (uvmy & 3) << 1;
+ if (!v->rnd) {
+ h264chroma->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
+ h264chroma->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
+ } else {
+ v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
+ v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
+ }
+}
+
+/** Do motion compensation for 4-MV interlaced frame chroma macroblock (both U and V)
+ */
+void ff_vc1_mc_4mv_chroma4(VC1Context *v, int dir, int dir2, int avg)
+{
+ MpegEncContext *s = &v->s;
+ H264ChromaContext *h264chroma = &v->h264chroma;
+ uint8_t *srcU, *srcV;
+ int uvsrc_x, uvsrc_y;
+ int uvmx_field[4], uvmy_field[4];
+ int i, off, tx, ty;
+ int fieldmv = v->blk_mv_type[s->block_index[0]];
+ static const int s_rndtblfield[16] = { 0, 0, 1, 2, 4, 4, 5, 6, 2, 2, 3, 8, 6, 6, 7, 12 };
+ int v_dist = fieldmv ? 1 : 4; // vertical offset for lower sub-blocks
+ int v_edge_pos = s->v_edge_pos >> 1;
+ int use_ic;
+ uint8_t (*lutuv)[256];
+
+ if (s->flags & CODEC_FLAG_GRAY)
+ return;
+
+ for (i = 0; i < 4; i++) {
+ int d = i < 2 ? dir: dir2;
+ tx = s->mv[d][i][0];
+ uvmx_field[i] = (tx + ((tx & 3) == 3)) >> 1;
+ ty = s->mv[d][i][1];
+ if (fieldmv)
+ uvmy_field[i] = (ty >> 4) * 8 + s_rndtblfield[ty & 0xF];
+ else
+ uvmy_field[i] = (ty + ((ty & 3) == 3)) >> 1;
+ }
+
+ for (i = 0; i < 4; i++) {
+ off = (i & 1) * 4 + ((i & 2) ? v_dist * s->uvlinesize : 0);
+ uvsrc_x = s->mb_x * 8 + (i & 1) * 4 + (uvmx_field[i] >> 2);
+ uvsrc_y = s->mb_y * 8 + ((i & 2) ? v_dist : 0) + (uvmy_field[i] >> 2);
+ // FIXME: implement proper pull-back (see vc1cropmv.c, vc1CROPMV_ChromaPullBack())
+ uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
+ uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
+ if (i < 2 ? dir : dir2) {
+ srcU = s->next_picture.f->data[1] + uvsrc_y * s->uvlinesize + uvsrc_x;
+ srcV = s->next_picture.f->data[2] + uvsrc_y * s->uvlinesize + uvsrc_x;
+ lutuv = v->next_lutuv;
+ use_ic = v->next_use_ic;
+ } else {
+ srcU = s->last_picture.f->data[1] + uvsrc_y * s->uvlinesize + uvsrc_x;
+ srcV = s->last_picture.f->data[2] + uvsrc_y * s->uvlinesize + uvsrc_x;
+ lutuv = v->last_lutuv;
+ use_ic = v->last_use_ic;
+ }
+ uvmx_field[i] = (uvmx_field[i] & 3) << 1;
+ uvmy_field[i] = (uvmy_field[i] & 3) << 1;
+
+ if (fieldmv && !(uvsrc_y & 1))
+ v_edge_pos--;
+ if (fieldmv && (uvsrc_y & 1) && uvsrc_y < 2)
+ uvsrc_y--;
+ if (use_ic
+ || s->h_edge_pos < 10 || v_edge_pos < (5 << fieldmv)
+ || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 5
+ || (unsigned)uvsrc_y > v_edge_pos - (5 << fieldmv)) {
+ s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcU,
+ s->uvlinesize, s->uvlinesize,
+ 5, (5 << fieldmv), uvsrc_x, uvsrc_y,
+ s->h_edge_pos >> 1, v_edge_pos);
+ s->vdsp.emulated_edge_mc(s->edge_emu_buffer + 16, srcV,
+ s->uvlinesize, s->uvlinesize,
+ 5, (5 << fieldmv), uvsrc_x, uvsrc_y,
+ s->h_edge_pos >> 1, v_edge_pos);
+ srcU = s->edge_emu_buffer;
+ srcV = s->edge_emu_buffer + 16;
+
+ /* if we deal with intensity compensation we need to scale source blocks */
+ if (use_ic) {
+ int i, j;
+ uint8_t *src, *src2;
+
+ src = srcU;
+ src2 = srcV;
+ for (j = 0; j < 5; j++) {
+ int f = (uvsrc_y + (j << fieldmv)) & 1;
+ for (i = 0; i < 5; i++) {
+ src[i] = lutuv[f][src[i]];
+ src2[i] = lutuv[f][src2[i]];
+ }
+ src += s->uvlinesize << fieldmv;
+ src2 += s->uvlinesize << fieldmv;
+ }
+ }
+ }
+ if (avg) {
+ if (!v->rnd) {
+ h264chroma->avg_h264_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
+ h264chroma->avg_h264_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
+ } else {
+ v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
+ v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
+ }
+ } else {
+ if (!v->rnd) {
+ h264chroma->put_h264_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
+ h264chroma->put_h264_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
+ } else {
+ v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
+ v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
+ }
+ }
+ }
+}
+
+/** Motion compensation for direct or interpolated blocks in B-frames
+ */
+void ff_vc1_interp_mc(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+ H264ChromaContext *h264chroma = &v->h264chroma;
+ uint8_t *srcY, *srcU, *srcV;
+ int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
+ int off, off_uv;
+ int v_edge_pos = s->v_edge_pos >> v->field_mode;
+ int use_ic = v->next_use_ic;
+
+ if (!v->field_mode && !v->s.next_picture.f->data[0])
+ return;
+
+ mx = s->mv[1][0][0];
+ my = s->mv[1][0][1];
+ uvmx = (mx + ((mx & 3) == 3)) >> 1;
+ uvmy = (my + ((my & 3) == 3)) >> 1;
+ if (v->field_mode) {
+ if (v->cur_field_type != v->ref_field_type[1])
+ my = my - 2 + 4 * v->cur_field_type;
+ uvmy = uvmy - 2 + 4 * v->cur_field_type;
+ }
+ if (v->fastuvmc) {
+ uvmx = uvmx + ((uvmx < 0) ? -(uvmx & 1) : (uvmx & 1));
+ uvmy = uvmy + ((uvmy < 0) ? -(uvmy & 1) : (uvmy & 1));
+ }
+ srcY = s->next_picture.f->data[0];
+ srcU = s->next_picture.f->data[1];
+ srcV = s->next_picture.f->data[2];
+
+ src_x = s->mb_x * 16 + (mx >> 2);
+ src_y = s->mb_y * 16 + (my >> 2);
+ uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
+ uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
+
+ if (v->profile != PROFILE_ADVANCED) {
+ src_x = av_clip( src_x, -16, s->mb_width * 16);
+ src_y = av_clip( src_y, -16, s->mb_height * 16);
+ uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
+ uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
+ } else {
+ src_x = av_clip( src_x, -17, s->avctx->coded_width);
+ src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
+ uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
+ uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
+ }
+
+ srcY += src_y * s->linesize + src_x;
+ srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
+ srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
+
+ if (v->field_mode && v->ref_field_type[1]) {
+ srcY += s->current_picture_ptr->f->linesize[0];
+ srcU += s->current_picture_ptr->f->linesize[1];
+ srcV += s->current_picture_ptr->f->linesize[2];
+ }
+
+ /* for grayscale we should not try to read from unknown area */
+ if (s->flags & CODEC_FLAG_GRAY) {
+ srcU = s->edge_emu_buffer + 18 * s->linesize;
+ srcV = s->edge_emu_buffer + 18 * s->linesize;
+ }
+
+ if (v->rangeredfrm || s->h_edge_pos < 22 || v_edge_pos < 22 || use_ic
+ || (unsigned)(src_x - 1) > s->h_edge_pos - (mx & 3) - 16 - 3
+ || (unsigned)(src_y - 1) > v_edge_pos - (my & 3) - 16 - 3) {
+ uint8_t *uvbuf = s->edge_emu_buffer + 19 * s->linesize;
+
+ srcY -= s->mspel * (1 + s->linesize);
+ s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
+ s->linesize, s->linesize,
+ 17 + s->mspel * 2, 17 + s->mspel * 2,
+ src_x - s->mspel, src_y - s->mspel,
+ s->h_edge_pos, v_edge_pos);
+ srcY = s->edge_emu_buffer;
+ s->vdsp.emulated_edge_mc(uvbuf, srcU,
+ s->uvlinesize, s->uvlinesize,
+ 8 + 1, 8 + 1,
+ uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, v_edge_pos >> 1);
+ s->vdsp.emulated_edge_mc(uvbuf + 16, srcV,
+ s->uvlinesize, s->uvlinesize,
+ 8 + 1, 8 + 1,
+ uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, v_edge_pos >> 1);
+ srcU = uvbuf;
+ srcV = uvbuf + 16;
+ /* if we deal with range reduction we need to scale source blocks */
+ if (v->rangeredfrm) {
+ int i, j;
+ uint8_t *src, *src2;
+
+ src = srcY;
+ for (j = 0; j < 17 + s->mspel * 2; j++) {
+ for (i = 0; i < 17 + s->mspel * 2; i++)
+ src[i] = ((src[i] - 128) >> 1) + 128;
+ src += s->linesize;
+ }
+ src = srcU;
+ src2 = srcV;
+ for (j = 0; j < 9; j++) {
+ for (i = 0; i < 9; i++) {
+ src[i] = ((src[i] - 128) >> 1) + 128;
+ src2[i] = ((src2[i] - 128) >> 1) + 128;
+ }
+ src += s->uvlinesize;
+ src2 += s->uvlinesize;
+ }
+ }
+
+ if (use_ic) {
+ uint8_t (*luty )[256] = v->next_luty;
+ uint8_t (*lutuv)[256] = v->next_lutuv;
+ int i, j;
+ uint8_t *src, *src2;
+
+ src = srcY;
+ for (j = 0; j < 17 + s->mspel * 2; j++) {
+ int f = v->field_mode ? v->ref_field_type[1] : ((j+src_y - s->mspel) & 1);
+ for (i = 0; i < 17 + s->mspel * 2; i++)
+ src[i] = luty[f][src[i]];
+ src += s->linesize;
+ }
+ src = srcU;
+ src2 = srcV;
+ for (j = 0; j < 9; j++) {
+ int f = v->field_mode ? v->ref_field_type[1] : ((j+uvsrc_y) & 1);
+ for (i = 0; i < 9; i++) {
+ src[i] = lutuv[f][src[i]];
+ src2[i] = lutuv[f][src2[i]];
+ }
+ src += s->uvlinesize;
+ src2 += s->uvlinesize;
+ }
+ }
+ srcY += s->mspel * (1 + s->linesize);
+ }
+
+ off = 0;
+ off_uv = 0;
+
+ if (s->mspel) {
+ dxy = ((my & 3) << 2) | (mx & 3);
+ v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + off , srcY , s->linesize, v->rnd);
+ v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + off + 8, srcY + 8, s->linesize, v->rnd);
+ srcY += s->linesize * 8;
+ v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + off + 8 * s->linesize , srcY , s->linesize, v->rnd);
+ v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + off + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
+ } else { // hpel mc
+ dxy = (my & 2) | ((mx & 2) >> 1);
+
+ if (!v->rnd)
+ s->hdsp.avg_pixels_tab[0][dxy](s->dest[0] + off, srcY, s->linesize, 16);
+ else
+ s->hdsp.avg_no_rnd_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize, 16);
+ }
+
+ if (s->flags & CODEC_FLAG_GRAY) return;
+ /* Chroma MC always uses qpel blilinear */
+ uvmx = (uvmx & 3) << 1;
+ uvmy = (uvmy & 3) << 1;
+ if (!v->rnd) {
+ h264chroma->avg_h264_chroma_pixels_tab[0](s->dest[1] + off_uv, srcU, s->uvlinesize, 8, uvmx, uvmy);
+ h264chroma->avg_h264_chroma_pixels_tab[0](s->dest[2] + off_uv, srcV, s->uvlinesize, 8, uvmx, uvmy);
+ } else {
+ v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1] + off_uv, srcU, s->uvlinesize, 8, uvmx, uvmy);
+ v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2] + off_uv, srcV, s->uvlinesize, 8, uvmx, uvmy);
+ }
+}
diff --git a/libavcodec/vc1_pred.c b/libavcodec/vc1_pred.c
new file mode 100644
index 0000000..6a54fe4
--- /dev/null
+++ b/libavcodec/vc1_pred.c
@@ -0,0 +1,959 @@
+/*
+ * VC-1 and WMV3 decoder
+ * Copyright (c) 2011 Mashiat Sarker Shakkhar
+ * Copyright (c) 2006-2007 Konstantin Shishkov
+ * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * VC-1 and WMV3 block decoding routines
+ */
+
+#include "mathops.h"
+#include "mpegutils.h"
+#include "mpegvideo.h"
+#include "vc1.h"
+#include "vc1_pred.h"
+#include "vc1data.h"
+
+static av_always_inline int scaleforsame_x(VC1Context *v, int n /* MV */, int dir)
+{
+ int scaledvalue, refdist;
+ int scalesame1, scalesame2;
+ int scalezone1_x, zone1offset_x;
+ int table_index = dir ^ v->second_field;
+
+ if (v->s.pict_type != AV_PICTURE_TYPE_B)
+ refdist = v->refdist;
+ else
+ refdist = dir ? v->brfd : v->frfd;
+ if (refdist > 3)
+ refdist = 3;
+ scalesame1 = ff_vc1_field_mvpred_scales[table_index][1][refdist];
+ scalesame2 = ff_vc1_field_mvpred_scales[table_index][2][refdist];
+ scalezone1_x = ff_vc1_field_mvpred_scales[table_index][3][refdist];
+ zone1offset_x = ff_vc1_field_mvpred_scales[table_index][5][refdist];
+
+ if (FFABS(n) > 255)
+ scaledvalue = n;
+ else {
+ if (FFABS(n) < scalezone1_x)
+ scaledvalue = (n * scalesame1) >> 8;
+ else {
+ if (n < 0)
+ scaledvalue = ((n * scalesame2) >> 8) - zone1offset_x;
+ else
+ scaledvalue = ((n * scalesame2) >> 8) + zone1offset_x;
+ }
+ }
+ return av_clip(scaledvalue, -v->range_x, v->range_x - 1);
+}
+
+static av_always_inline int scaleforsame_y(VC1Context *v, int i, int n /* MV */, int dir)
+{
+ int scaledvalue, refdist;
+ int scalesame1, scalesame2;
+ int scalezone1_y, zone1offset_y;
+ int table_index = dir ^ v->second_field;
+
+ if (v->s.pict_type != AV_PICTURE_TYPE_B)
+ refdist = v->refdist;
+ else
+ refdist = dir ? v->brfd : v->frfd;
+ if (refdist > 3)
+ refdist = 3;
+ scalesame1 = ff_vc1_field_mvpred_scales[table_index][1][refdist];
+ scalesame2 = ff_vc1_field_mvpred_scales[table_index][2][refdist];
+ scalezone1_y = ff_vc1_field_mvpred_scales[table_index][4][refdist];
+ zone1offset_y = ff_vc1_field_mvpred_scales[table_index][6][refdist];
+
+ if (FFABS(n) > 63)
+ scaledvalue = n;
+ else {
+ if (FFABS(n) < scalezone1_y)
+ scaledvalue = (n * scalesame1) >> 8;
+ else {
+ if (n < 0)
+ scaledvalue = ((n * scalesame2) >> 8) - zone1offset_y;
+ else
+ scaledvalue = ((n * scalesame2) >> 8) + zone1offset_y;
+ }
+ }
+
+ if (v->cur_field_type && !v->ref_field_type[dir])
+ return av_clip(scaledvalue, -v->range_y / 2 + 1, v->range_y / 2);
+ else
+ return av_clip(scaledvalue, -v->range_y / 2, v->range_y / 2 - 1);
+}
+
+static av_always_inline int scaleforopp_x(VC1Context *v, int n /* MV */)
+{
+ int scalezone1_x, zone1offset_x;
+ int scaleopp1, scaleopp2, brfd;
+ int scaledvalue;
+
+ brfd = FFMIN(v->brfd, 3);
+ scalezone1_x = ff_vc1_b_field_mvpred_scales[3][brfd];
+ zone1offset_x = ff_vc1_b_field_mvpred_scales[5][brfd];
+ scaleopp1 = ff_vc1_b_field_mvpred_scales[1][brfd];
+ scaleopp2 = ff_vc1_b_field_mvpred_scales[2][brfd];
+
+ if (FFABS(n) > 255)
+ scaledvalue = n;
+ else {
+ if (FFABS(n) < scalezone1_x)
+ scaledvalue = (n * scaleopp1) >> 8;
+ else {
+ if (n < 0)
+ scaledvalue = ((n * scaleopp2) >> 8) - zone1offset_x;
+ else
+ scaledvalue = ((n * scaleopp2) >> 8) + zone1offset_x;
+ }
+ }
+ return av_clip(scaledvalue, -v->range_x, v->range_x - 1);
+}
+
+static av_always_inline int scaleforopp_y(VC1Context *v, int n /* MV */, int dir)
+{
+ int scalezone1_y, zone1offset_y;
+ int scaleopp1, scaleopp2, brfd;
+ int scaledvalue;
+
+ brfd = FFMIN(v->brfd, 3);
+ scalezone1_y = ff_vc1_b_field_mvpred_scales[4][brfd];
+ zone1offset_y = ff_vc1_b_field_mvpred_scales[6][brfd];
+ scaleopp1 = ff_vc1_b_field_mvpred_scales[1][brfd];
+ scaleopp2 = ff_vc1_b_field_mvpred_scales[2][brfd];
+
+ if (FFABS(n) > 63)
+ scaledvalue = n;
+ else {
+ if (FFABS(n) < scalezone1_y)
+ scaledvalue = (n * scaleopp1) >> 8;
+ else {
+ if (n < 0)
+ scaledvalue = ((n * scaleopp2) >> 8) - zone1offset_y;
+ else
+ scaledvalue = ((n * scaleopp2) >> 8) + zone1offset_y;
+ }
+ }
+ if (v->cur_field_type && !v->ref_field_type[dir]) {
+ return av_clip(scaledvalue, -v->range_y / 2 + 1, v->range_y / 2);
+ } else {
+ return av_clip(scaledvalue, -v->range_y / 2, v->range_y / 2 - 1);
+ }
+}
+
+static av_always_inline int scaleforsame(VC1Context *v, int i, int n /* MV */,
+ int dim, int dir)
+{
+ int brfd, scalesame;
+ int hpel = 1 - v->s.quarter_sample;
+
+ n >>= hpel;
+ if (v->s.pict_type != AV_PICTURE_TYPE_B || v->second_field || !dir) {
+ if (dim)
+ n = scaleforsame_y(v, i, n, dir) << hpel;
+ else
+ n = scaleforsame_x(v, n, dir) << hpel;
+ return n;
+ }
+ brfd = FFMIN(v->brfd, 3);
+ scalesame = ff_vc1_b_field_mvpred_scales[0][brfd];
+
+ n = (n * scalesame >> 8) << hpel;
+ return n;
+}
+
+static av_always_inline int scaleforopp(VC1Context *v, int n /* MV */,
+ int dim, int dir)
+{
+ int refdist, scaleopp;
+ int hpel = 1 - v->s.quarter_sample;
+
+ n >>= hpel;
+ if (v->s.pict_type == AV_PICTURE_TYPE_B && !v->second_field && dir == 1) {
+ if (dim)
+ n = scaleforopp_y(v, n, dir) << hpel;
+ else
+ n = scaleforopp_x(v, n) << hpel;
+ return n;
+ }
+ if (v->s.pict_type != AV_PICTURE_TYPE_B)
+ refdist = FFMIN(v->refdist, 3);
+ else
+ refdist = dir ? v->brfd : v->frfd;
+ scaleopp = ff_vc1_field_mvpred_scales[dir ^ v->second_field][0][refdist];
+
+ n = (n * scaleopp >> 8) << hpel;
+ return n;
+}
+
+/** Predict and set motion vector
+ */
+void ff_vc1_pred_mv(VC1Context *v, int n, int dmv_x, int dmv_y,
+ int mv1, int r_x, int r_y, uint8_t* is_intra,
+ int pred_flag, int dir)
+{
+ MpegEncContext *s = &v->s;
+ int xy, wrap, off = 0;
+ int16_t *A, *B, *C;
+ int px, py;
+ int sum;
+ int mixedmv_pic, num_samefield = 0, num_oppfield = 0;
+ int opposite, a_f, b_f, c_f;
+ int16_t field_predA[2];
+ int16_t field_predB[2];
+ int16_t field_predC[2];
+ int a_valid, b_valid, c_valid;
+ int hybridmv_thresh, y_bias = 0;
+
+ if (v->mv_mode == MV_PMODE_MIXED_MV ||
+ ((v->mv_mode == MV_PMODE_INTENSITY_COMP) && (v->mv_mode2 == MV_PMODE_MIXED_MV)))
+ mixedmv_pic = 1;
+ else
+ mixedmv_pic = 0;
+ /* scale MV difference to be quad-pel */
+ dmv_x <<= 1 - s->quarter_sample;
+ dmv_y <<= 1 - s->quarter_sample;
+
+ wrap = s->b8_stride;
+ xy = s->block_index[n];
+
+ if (s->mb_intra) {
+ s->mv[0][n][0] = s->current_picture.motion_val[0][xy + v->blocks_off][0] = 0;
+ s->mv[0][n][1] = s->current_picture.motion_val[0][xy + v->blocks_off][1] = 0;
+ s->current_picture.motion_val[1][xy + v->blocks_off][0] = 0;
+ s->current_picture.motion_val[1][xy + v->blocks_off][1] = 0;
+ if (mv1) { /* duplicate motion data for 1-MV block */
+ s->current_picture.motion_val[0][xy + 1 + v->blocks_off][0] = 0;
+ s->current_picture.motion_val[0][xy + 1 + v->blocks_off][1] = 0;
+ s->current_picture.motion_val[0][xy + wrap + v->blocks_off][0] = 0;
+ s->current_picture.motion_val[0][xy + wrap + v->blocks_off][1] = 0;
+ s->current_picture.motion_val[0][xy + wrap + 1 + v->blocks_off][0] = 0;
+ s->current_picture.motion_val[0][xy + wrap + 1 + v->blocks_off][1] = 0;
+ v->luma_mv[s->mb_x][0] = v->luma_mv[s->mb_x][1] = 0;
+ s->current_picture.motion_val[1][xy + 1 + v->blocks_off][0] = 0;
+ s->current_picture.motion_val[1][xy + 1 + v->blocks_off][1] = 0;
+ s->current_picture.motion_val[1][xy + wrap][0] = 0;
+ s->current_picture.motion_val[1][xy + wrap + v->blocks_off][1] = 0;
+ s->current_picture.motion_val[1][xy + wrap + 1 + v->blocks_off][0] = 0;
+ s->current_picture.motion_val[1][xy + wrap + 1 + v->blocks_off][1] = 0;
+ }
+ return;
+ }
+
+ C = s->current_picture.motion_val[dir][xy - 1 + v->blocks_off];
+ A = s->current_picture.motion_val[dir][xy - wrap + v->blocks_off];
+ if (mv1) {
+ if (v->field_mode && mixedmv_pic)
+ off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
+ else
+ off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2;
+ } else {
+ //in 4-MV mode different blocks have different B predictor position
+ switch (n) {
+ case 0:
+ off = (s->mb_x > 0) ? -1 : 1;
+ break;
+ case 1:
+ off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1;
+ break;
+ case 2:
+ off = 1;
+ break;
+ case 3:
+ off = -1;
+ }
+ }
+ B = s->current_picture.motion_val[dir][xy - wrap + off + v->blocks_off];
+
+ a_valid = !s->first_slice_line || (n == 2 || n == 3);
+ b_valid = a_valid && (s->mb_width > 1);
+ c_valid = s->mb_x || (n == 1 || n == 3);
+ if (v->field_mode) {
+ a_valid = a_valid && !is_intra[xy - wrap];
+ b_valid = b_valid && !is_intra[xy - wrap + off];
+ c_valid = c_valid && !is_intra[xy - 1];
+ }
+
+ if (a_valid) {
+ a_f = v->mv_f[dir][xy - wrap + v->blocks_off];
+ num_oppfield += a_f;
+ num_samefield += 1 - a_f;
+ field_predA[0] = A[0];
+ field_predA[1] = A[1];
+ } else {
+ field_predA[0] = field_predA[1] = 0;
+ a_f = 0;
+ }
+ if (b_valid) {
+ b_f = v->mv_f[dir][xy - wrap + off + v->blocks_off];
+ num_oppfield += b_f;
+ num_samefield += 1 - b_f;
+ field_predB[0] = B[0];
+ field_predB[1] = B[1];
+ } else {
+ field_predB[0] = field_predB[1] = 0;
+ b_f = 0;
+ }
+ if (c_valid) {
+ c_f = v->mv_f[dir][xy - 1 + v->blocks_off];
+ num_oppfield += c_f;
+ num_samefield += 1 - c_f;
+ field_predC[0] = C[0];
+ field_predC[1] = C[1];
+ } else {
+ field_predC[0] = field_predC[1] = 0;
+ c_f = 0;
+ }
+
+ if (v->field_mode) {
+ if (!v->numref)
+ // REFFIELD determines if the last field or the second-last field is
+ // to be used as reference
+ opposite = 1 - v->reffield;
+ else {
+ if (num_samefield <= num_oppfield)
+ opposite = 1 - pred_flag;
+ else
+ opposite = pred_flag;
+ }
+ } else
+ opposite = 0;
+ if (opposite) {
+ if (a_valid && !a_f) {
+ field_predA[0] = scaleforopp(v, field_predA[0], 0, dir);
+ field_predA[1] = scaleforopp(v, field_predA[1], 1, dir);
+ }
+ if (b_valid && !b_f) {
+ field_predB[0] = scaleforopp(v, field_predB[0], 0, dir);
+ field_predB[1] = scaleforopp(v, field_predB[1], 1, dir);
+ }
+ if (c_valid && !c_f) {
+ field_predC[0] = scaleforopp(v, field_predC[0], 0, dir);
+ field_predC[1] = scaleforopp(v, field_predC[1], 1, dir);
+ }
+ v->mv_f[dir][xy + v->blocks_off] = 1;
+ v->ref_field_type[dir] = !v->cur_field_type;
+ } else {
+ if (a_valid && a_f) {
+ field_predA[0] = scaleforsame(v, n, field_predA[0], 0, dir);
+ field_predA[1] = scaleforsame(v, n, field_predA[1], 1, dir);
+ }
+ if (b_valid && b_f) {
+ field_predB[0] = scaleforsame(v, n, field_predB[0], 0, dir);
+ field_predB[1] = scaleforsame(v, n, field_predB[1], 1, dir);
+ }
+ if (c_valid && c_f) {
+ field_predC[0] = scaleforsame(v, n, field_predC[0], 0, dir);
+ field_predC[1] = scaleforsame(v, n, field_predC[1], 1, dir);
+ }
+ v->mv_f[dir][xy + v->blocks_off] = 0;
+ v->ref_field_type[dir] = v->cur_field_type;
+ }
+
+ if (a_valid) {
+ px = field_predA[0];
+ py = field_predA[1];
+ } else if (c_valid) {
+ px = field_predC[0];
+ py = field_predC[1];
+ } else if (b_valid) {
+ px = field_predB[0];
+ py = field_predB[1];
+ } else {
+ px = 0;
+ py = 0;
+ }
+
+ if (num_samefield + num_oppfield > 1) {
+ px = mid_pred(field_predA[0], field_predB[0], field_predC[0]);
+ py = mid_pred(field_predA[1], field_predB[1], field_predC[1]);
+ }
+
+ /* Pullback MV as specified in 8.3.5.3.4 */
+ if (!v->field_mode) {
+ int qx, qy, X, Y;
+ qx = (s->mb_x << 6) + ((n == 1 || n == 3) ? 32 : 0);
+ qy = (s->mb_y << 6) + ((n == 2 || n == 3) ? 32 : 0);
+ X = (s->mb_width << 6) - 4;
+ Y = (s->mb_height << 6) - 4;
+ if (mv1) {
+ if (qx + px < -60) px = -60 - qx;
+ if (qy + py < -60) py = -60 - qy;
+ } else {
+ if (qx + px < -28) px = -28 - qx;
+ if (qy + py < -28) py = -28 - qy;
+ }
+ if (qx + px > X) px = X - qx;
+ if (qy + py > Y) py = Y - qy;
+ }
+
+ if (!v->field_mode || s->pict_type != AV_PICTURE_TYPE_B) {
+ /* Calculate hybrid prediction as specified in 8.3.5.3.5 (also 10.3.5.4.3.5) */
+ hybridmv_thresh = 32;
+ if (a_valid && c_valid) {
+ if (is_intra[xy - wrap])
+ sum = FFABS(px) + FFABS(py);
+ else
+ sum = FFABS(px - field_predA[0]) + FFABS(py - field_predA[1]);
+ if (sum > hybridmv_thresh) {
+ if (get_bits1(&s->gb)) { // read HYBRIDPRED bit
+ px = field_predA[0];
+ py = field_predA[1];
+ } else {
+ px = field_predC[0];
+ py = field_predC[1];
+ }
+ } else {
+ if (is_intra[xy - 1])
+ sum = FFABS(px) + FFABS(py);
+ else
+ sum = FFABS(px - field_predC[0]) + FFABS(py - field_predC[1]);
+ if (sum > hybridmv_thresh) {
+ if (get_bits1(&s->gb)) {
+ px = field_predA[0];
+ py = field_predA[1];
+ } else {
+ px = field_predC[0];
+ py = field_predC[1];
+ }
+ }
+ }
+ }
+ }
+
+ if (v->field_mode && v->numref)
+ r_y >>= 1;
+ if (v->field_mode && v->cur_field_type && v->ref_field_type[dir] == 0)
+ y_bias = 1;
+ /* store MV using signed modulus of MV range defined in 4.11 */
+ s->mv[dir][n][0] = s->current_picture.motion_val[dir][xy + v->blocks_off][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
+ s->mv[dir][n][1] = s->current_picture.motion_val[dir][xy + v->blocks_off][1] = ((py + dmv_y + r_y - y_bias) & ((r_y << 1) - 1)) - r_y + y_bias;
+ if (mv1) { /* duplicate motion data for 1-MV block */
+ s->current_picture.motion_val[dir][xy + 1 + v->blocks_off][0] = s->current_picture.motion_val[dir][xy + v->blocks_off][0];
+ s->current_picture.motion_val[dir][xy + 1 + v->blocks_off][1] = s->current_picture.motion_val[dir][xy + v->blocks_off][1];
+ s->current_picture.motion_val[dir][xy + wrap + v->blocks_off][0] = s->current_picture.motion_val[dir][xy + v->blocks_off][0];
+ s->current_picture.motion_val[dir][xy + wrap + v->blocks_off][1] = s->current_picture.motion_val[dir][xy + v->blocks_off][1];
+ s->current_picture.motion_val[dir][xy + wrap + 1 + v->blocks_off][0] = s->current_picture.motion_val[dir][xy + v->blocks_off][0];
+ s->current_picture.motion_val[dir][xy + wrap + 1 + v->blocks_off][1] = s->current_picture.motion_val[dir][xy + v->blocks_off][1];
+ v->mv_f[dir][xy + 1 + v->blocks_off] = v->mv_f[dir][xy + v->blocks_off];
+ v->mv_f[dir][xy + wrap + v->blocks_off] = v->mv_f[dir][xy + wrap + 1 + v->blocks_off] = v->mv_f[dir][xy + v->blocks_off];
+ }
+}
+
+/** Predict and set motion vector for interlaced frame picture MBs
+ */
+void ff_vc1_pred_mv_intfr(VC1Context *v, int n, int dmv_x, int dmv_y,
+ int mvn, int r_x, int r_y, uint8_t* is_intra, int dir)
+{
+ MpegEncContext *s = &v->s;
+ int xy, wrap, off = 0;
+ int A[2], B[2], C[2];
+ int px, py;
+ int a_valid = 0, b_valid = 0, c_valid = 0;
+ int field_a, field_b, field_c; // 0: same, 1: opposit
+ int total_valid, num_samefield, num_oppfield;
+ int pos_c, pos_b, n_adj;
+
+ wrap = s->b8_stride;
+ xy = s->block_index[n];
+
+ if (s->mb_intra) {
+ s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
+ s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
+ s->current_picture.motion_val[1][xy][0] = 0;
+ s->current_picture.motion_val[1][xy][1] = 0;
+ if (mvn == 1) { /* duplicate motion data for 1-MV block */
+ s->current_picture.motion_val[0][xy + 1][0] = 0;
+ s->current_picture.motion_val[0][xy + 1][1] = 0;
+ s->current_picture.motion_val[0][xy + wrap][0] = 0;
+ s->current_picture.motion_val[0][xy + wrap][1] = 0;
+ s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
+ s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
+ v->luma_mv[s->mb_x][0] = v->luma_mv[s->mb_x][1] = 0;
+ s->current_picture.motion_val[1][xy + 1][0] = 0;
+ s->current_picture.motion_val[1][xy + 1][1] = 0;
+ s->current_picture.motion_val[1][xy + wrap][0] = 0;
+ s->current_picture.motion_val[1][xy + wrap][1] = 0;
+ s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
+ s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
+ }
+ return;
+ }
+
+ off = ((n == 0) || (n == 1)) ? 1 : -1;
+ /* predict A */
+ if (s->mb_x || (n == 1) || (n == 3)) {
+ if ((v->blk_mv_type[xy]) // current block (MB) has a field MV
+ || (!v->blk_mv_type[xy] && !v->blk_mv_type[xy - 1])) { // or both have frame MV
+ A[0] = s->current_picture.motion_val[dir][xy - 1][0];
+ A[1] = s->current_picture.motion_val[dir][xy - 1][1];
+ a_valid = 1;
+ } else { // current block has frame mv and cand. has field MV (so average)
+ A[0] = (s->current_picture.motion_val[dir][xy - 1][0]
+ + s->current_picture.motion_val[dir][xy - 1 + off * wrap][0] + 1) >> 1;
+ A[1] = (s->current_picture.motion_val[dir][xy - 1][1]
+ + s->current_picture.motion_val[dir][xy - 1 + off * wrap][1] + 1) >> 1;
+ a_valid = 1;
+ }
+ if (!(n & 1) && v->is_intra[s->mb_x - 1]) {
+ a_valid = 0;
+ A[0] = A[1] = 0;
+ }
+ } else
+ A[0] = A[1] = 0;
+ /* Predict B and C */
+ B[0] = B[1] = C[0] = C[1] = 0;
+ if (n == 0 || n == 1 || v->blk_mv_type[xy]) {
+ if (!s->first_slice_line) {
+ if (!v->is_intra[s->mb_x - s->mb_stride]) {
+ b_valid = 1;
+ n_adj = n | 2;
+ pos_b = s->block_index[n_adj] - 2 * wrap;
+ if (v->blk_mv_type[pos_b] && v->blk_mv_type[xy]) {
+ n_adj = (n & 2) | (n & 1);
+ }
+ B[0] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap][0];
+ B[1] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap][1];
+ if (v->blk_mv_type[pos_b] && !v->blk_mv_type[xy]) {
+ B[0] = (B[0] + s->current_picture.motion_val[dir][s->block_index[n_adj ^ 2] - 2 * wrap][0] + 1) >> 1;
+ B[1] = (B[1] + s->current_picture.motion_val[dir][s->block_index[n_adj ^ 2] - 2 * wrap][1] + 1) >> 1;
+ }
+ }
+ if (s->mb_width > 1) {
+ if (!v->is_intra[s->mb_x - s->mb_stride + 1]) {
+ c_valid = 1;
+ n_adj = 2;
+ pos_c = s->block_index[2] - 2 * wrap + 2;
+ if (v->blk_mv_type[pos_c] && v->blk_mv_type[xy]) {
+ n_adj = n & 2;
+ }
+ C[0] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap + 2][0];
+ C[1] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap + 2][1];
+ if (v->blk_mv_type[pos_c] && !v->blk_mv_type[xy]) {
+ C[0] = (1 + C[0] + (s->current_picture.motion_val[dir][s->block_index[n_adj ^ 2] - 2 * wrap + 2][0])) >> 1;
+ C[1] = (1 + C[1] + (s->current_picture.motion_val[dir][s->block_index[n_adj ^ 2] - 2 * wrap + 2][1])) >> 1;
+ }
+ if (s->mb_x == s->mb_width - 1) {
+ if (!v->is_intra[s->mb_x - s->mb_stride - 1]) {
+ c_valid = 1;
+ n_adj = 3;
+ pos_c = s->block_index[3] - 2 * wrap - 2;
+ if (v->blk_mv_type[pos_c] && v->blk_mv_type[xy]) {
+ n_adj = n | 1;
+ }
+ C[0] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap - 2][0];
+ C[1] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap - 2][1];
+ if (v->blk_mv_type[pos_c] && !v->blk_mv_type[xy]) {
+ C[0] = (1 + C[0] + s->current_picture.motion_val[dir][s->block_index[1] - 2 * wrap - 2][0]) >> 1;
+ C[1] = (1 + C[1] + s->current_picture.motion_val[dir][s->block_index[1] - 2 * wrap - 2][1]) >> 1;
+ }
+ } else
+ c_valid = 0;
+ }
+ }
+ }
+ }
+ } else {
+ pos_b = s->block_index[1];
+ b_valid = 1;
+ B[0] = s->current_picture.motion_val[dir][pos_b][0];
+ B[1] = s->current_picture.motion_val[dir][pos_b][1];
+ pos_c = s->block_index[0];
+ c_valid = 1;
+ C[0] = s->current_picture.motion_val[dir][pos_c][0];
+ C[1] = s->current_picture.motion_val[dir][pos_c][1];
+ }
+
+ total_valid = a_valid + b_valid + c_valid;
+ // check if predictor A is out of bounds
+ if (!s->mb_x && !(n == 1 || n == 3)) {
+ A[0] = A[1] = 0;
+ }
+ // check if predictor B is out of bounds
+ if ((s->first_slice_line && v->blk_mv_type[xy]) || (s->first_slice_line && !(n & 2))) {
+ B[0] = B[1] = C[0] = C[1] = 0;
+ }
+ if (!v->blk_mv_type[xy]) {
+ if (s->mb_width == 1) {
+ px = B[0];
+ py = B[1];
+ } else {
+ if (total_valid >= 2) {
+ px = mid_pred(A[0], B[0], C[0]);
+ py = mid_pred(A[1], B[1], C[1]);
+ } else if (total_valid) {
+ if (a_valid) { px = A[0]; py = A[1]; }
+ if (b_valid) { px = B[0]; py = B[1]; }
+ if (c_valid) { px = C[0]; py = C[1]; }
+ } else
+ px = py = 0;
+ }
+ } else {
+ if (a_valid)
+ field_a = (A[1] & 4) ? 1 : 0;
+ else
+ field_a = 0;
+ if (b_valid)
+ field_b = (B[1] & 4) ? 1 : 0;
+ else
+ field_b = 0;
+ if (c_valid)
+ field_c = (C[1] & 4) ? 1 : 0;
+ else
+ field_c = 0;
+
+ num_oppfield = field_a + field_b + field_c;
+ num_samefield = total_valid - num_oppfield;
+ if (total_valid == 3) {
+ if ((num_samefield == 3) || (num_oppfield == 3)) {
+ px = mid_pred(A[0], B[0], C[0]);
+ py = mid_pred(A[1], B[1], C[1]);
+ } else if (num_samefield >= num_oppfield) {
+ /* take one MV from same field set depending on priority
+ the check for B may not be necessary */
+ px = !field_a ? A[0] : B[0];
+ py = !field_a ? A[1] : B[1];
+ } else {
+ px = field_a ? A[0] : B[0];
+ py = field_a ? A[1] : B[1];
+ }
+ } else if (total_valid == 2) {
+ if (num_samefield >= num_oppfield) {
+ if (!field_a && a_valid) {
+ px = A[0];
+ py = A[1];
+ } else if (!field_b && b_valid) {
+ px = B[0];
+ py = B[1];
+ } else if (c_valid) {
+ px = C[0];
+ py = C[1];
+ } else px = py = 0;
+ } else {
+ if (field_a && a_valid) {
+ px = A[0];
+ py = A[1];
+ } else if (field_b && b_valid) {
+ px = B[0];
+ py = B[1];
+ } else if (c_valid) {
+ px = C[0];
+ py = C[1];
+ } else
+ px = py = 0;
+ }
+ } else if (total_valid == 1) {
+ px = (a_valid) ? A[0] : ((b_valid) ? B[0] : C[0]);
+ py = (a_valid) ? A[1] : ((b_valid) ? B[1] : C[1]);
+ } else
+ px = py = 0;
+ }
+
+ /* store MV using signed modulus of MV range defined in 4.11 */
+ s->mv[dir][n][0] = s->current_picture.motion_val[dir][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
+ s->mv[dir][n][1] = s->current_picture.motion_val[dir][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
+ if (mvn == 1) { /* duplicate motion data for 1-MV block */
+ s->current_picture.motion_val[dir][xy + 1 ][0] = s->current_picture.motion_val[dir][xy][0];
+ s->current_picture.motion_val[dir][xy + 1 ][1] = s->current_picture.motion_val[dir][xy][1];
+ s->current_picture.motion_val[dir][xy + wrap ][0] = s->current_picture.motion_val[dir][xy][0];
+ s->current_picture.motion_val[dir][xy + wrap ][1] = s->current_picture.motion_val[dir][xy][1];
+ s->current_picture.motion_val[dir][xy + wrap + 1][0] = s->current_picture.motion_val[dir][xy][0];
+ s->current_picture.motion_val[dir][xy + wrap + 1][1] = s->current_picture.motion_val[dir][xy][1];
+ } else if (mvn == 2) { /* duplicate motion data for 2-Field MV block */
+ s->current_picture.motion_val[dir][xy + 1][0] = s->current_picture.motion_val[dir][xy][0];
+ s->current_picture.motion_val[dir][xy + 1][1] = s->current_picture.motion_val[dir][xy][1];
+ s->mv[dir][n + 1][0] = s->mv[dir][n][0];
+ s->mv[dir][n + 1][1] = s->mv[dir][n][1];
+ }
+}
+
+void ff_vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2],
+ int direct, int mvtype)
+{
+ MpegEncContext *s = &v->s;
+ int xy, wrap, off = 0;
+ int16_t *A, *B, *C;
+ int px, py;
+ int sum;
+ int r_x, r_y;
+ const uint8_t *is_intra = v->mb_type[0];
+
+ r_x = v->range_x;
+ r_y = v->range_y;
+ /* scale MV difference to be quad-pel */
+ dmv_x[0] <<= 1 - s->quarter_sample;
+ dmv_y[0] <<= 1 - s->quarter_sample;
+ dmv_x[1] <<= 1 - s->quarter_sample;
+ dmv_y[1] <<= 1 - s->quarter_sample;
+
+ wrap = s->b8_stride;
+ xy = s->block_index[0];
+
+ if (s->mb_intra) {
+ s->current_picture.motion_val[0][xy + v->blocks_off][0] =
+ s->current_picture.motion_val[0][xy + v->blocks_off][1] =
+ s->current_picture.motion_val[1][xy + v->blocks_off][0] =
+ s->current_picture.motion_val[1][xy + v->blocks_off][1] = 0;
+ return;
+ }
+ if (!v->field_mode) {
+ s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample);
+ s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample);
+ s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample);
+ s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample);
+
+ /* Pullback predicted motion vectors as specified in 8.4.5.4 */
+ s->mv[0][0][0] = av_clip(s->mv[0][0][0], -60 - (s->mb_x << 6), (s->mb_width << 6) - 4 - (s->mb_x << 6));
+ s->mv[0][0][1] = av_clip(s->mv[0][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6));
+ s->mv[1][0][0] = av_clip(s->mv[1][0][0], -60 - (s->mb_x << 6), (s->mb_width << 6) - 4 - (s->mb_x << 6));
+ s->mv[1][0][1] = av_clip(s->mv[1][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6));
+ }
+ if (direct) {
+ s->current_picture.motion_val[0][xy + v->blocks_off][0] = s->mv[0][0][0];
+ s->current_picture.motion_val[0][xy + v->blocks_off][1] = s->mv[0][0][1];
+ s->current_picture.motion_val[1][xy + v->blocks_off][0] = s->mv[1][0][0];
+ s->current_picture.motion_val[1][xy + v->blocks_off][1] = s->mv[1][0][1];
+ return;
+ }
+
+ if ((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
+ C = s->current_picture.motion_val[0][xy - 2];
+ A = s->current_picture.motion_val[0][xy - wrap * 2];
+ off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
+ B = s->current_picture.motion_val[0][xy - wrap * 2 + off];
+
+ if (!s->mb_x) C[0] = C[1] = 0;
+ if (!s->first_slice_line) { // predictor A is not out of bounds
+ if (s->mb_width == 1) {
+ px = A[0];
+ py = A[1];
+ } else {
+ px = mid_pred(A[0], B[0], C[0]);
+ py = mid_pred(A[1], B[1], C[1]);
+ }
+ } else if (s->mb_x) { // predictor C is not out of bounds
+ px = C[0];
+ py = C[1];
+ } else {
+ px = py = 0;
+ }
+ /* Pullback MV as specified in 8.3.5.3.4 */
+ {
+ int qx, qy, X, Y;
+ if (v->profile < PROFILE_ADVANCED) {
+ qx = (s->mb_x << 5);
+ qy = (s->mb_y << 5);
+ X = (s->mb_width << 5) - 4;
+ Y = (s->mb_height << 5) - 4;
+ if (qx + px < -28) px = -28 - qx;
+ if (qy + py < -28) py = -28 - qy;
+ if (qx + px > X) px = X - qx;
+ if (qy + py > Y) py = Y - qy;
+ } else {
+ qx = (s->mb_x << 6);
+ qy = (s->mb_y << 6);
+ X = (s->mb_width << 6) - 4;
+ Y = (s->mb_height << 6) - 4;
+ if (qx + px < -60) px = -60 - qx;
+ if (qy + py < -60) py = -60 - qy;
+ if (qx + px > X) px = X - qx;
+ if (qy + py > Y) py = Y - qy;
+ }
+ }
+ /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
+ if (0 && !s->first_slice_line && s->mb_x) {
+ if (is_intra[xy - wrap])
+ sum = FFABS(px) + FFABS(py);
+ else
+ sum = FFABS(px - A[0]) + FFABS(py - A[1]);
+ if (sum > 32) {
+ if (get_bits1(&s->gb)) {
+ px = A[0];
+ py = A[1];
+ } else {
+ px = C[0];
+ py = C[1];
+ }
+ } else {
+ if (is_intra[xy - 2])
+ sum = FFABS(px) + FFABS(py);
+ else
+ sum = FFABS(px - C[0]) + FFABS(py - C[1]);
+ if (sum > 32) {
+ if (get_bits1(&s->gb)) {
+ px = A[0];
+ py = A[1];
+ } else {
+ px = C[0];
+ py = C[1];
+ }
+ }
+ }
+ }
+ /* store MV using signed modulus of MV range defined in 4.11 */
+ s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x;
+ s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y;
+ }
+ if ((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
+ C = s->current_picture.motion_val[1][xy - 2];
+ A = s->current_picture.motion_val[1][xy - wrap * 2];
+ off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
+ B = s->current_picture.motion_val[1][xy - wrap * 2 + off];
+
+ if (!s->mb_x)
+ C[0] = C[1] = 0;
+ if (!s->first_slice_line) { // predictor A is not out of bounds
+ if (s->mb_width == 1) {
+ px = A[0];
+ py = A[1];
+ } else {
+ px = mid_pred(A[0], B[0], C[0]);
+ py = mid_pred(A[1], B[1], C[1]);
+ }
+ } else if (s->mb_x) { // predictor C is not out of bounds
+ px = C[0];
+ py = C[1];
+ } else {
+ px = py = 0;
+ }
+ /* Pullback MV as specified in 8.3.5.3.4 */
+ {
+ int qx, qy, X, Y;
+ if (v->profile < PROFILE_ADVANCED) {
+ qx = (s->mb_x << 5);
+ qy = (s->mb_y << 5);
+ X = (s->mb_width << 5) - 4;
+ Y = (s->mb_height << 5) - 4;
+ if (qx + px < -28) px = -28 - qx;
+ if (qy + py < -28) py = -28 - qy;
+ if (qx + px > X) px = X - qx;
+ if (qy + py > Y) py = Y - qy;
+ } else {
+ qx = (s->mb_x << 6);
+ qy = (s->mb_y << 6);
+ X = (s->mb_width << 6) - 4;
+ Y = (s->mb_height << 6) - 4;
+ if (qx + px < -60) px = -60 - qx;
+ if (qy + py < -60) py = -60 - qy;
+ if (qx + px > X) px = X - qx;
+ if (qy + py > Y) py = Y - qy;
+ }
+ }
+ /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
+ if (0 && !s->first_slice_line && s->mb_x) {
+ if (is_intra[xy - wrap])
+ sum = FFABS(px) + FFABS(py);
+ else
+ sum = FFABS(px - A[0]) + FFABS(py - A[1]);
+ if (sum > 32) {
+ if (get_bits1(&s->gb)) {
+ px = A[0];
+ py = A[1];
+ } else {
+ px = C[0];
+ py = C[1];
+ }
+ } else {
+ if (is_intra[xy - 2])
+ sum = FFABS(px) + FFABS(py);
+ else
+ sum = FFABS(px - C[0]) + FFABS(py - C[1]);
+ if (sum > 32) {
+ if (get_bits1(&s->gb)) {
+ px = A[0];
+ py = A[1];
+ } else {
+ px = C[0];
+ py = C[1];
+ }
+ }
+ }
+ }
+ /* store MV using signed modulus of MV range defined in 4.11 */
+
+ s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x;
+ s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y;
+ }
+ s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
+ s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
+ s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
+ s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
+}
+
+void ff_vc1_pred_b_mv_intfi(VC1Context *v, int n, int *dmv_x, int *dmv_y,
+ int mv1, int *pred_flag)
+{
+ int dir = (v->bmvtype == BMV_TYPE_BACKWARD) ? 1 : 0;
+ MpegEncContext *s = &v->s;
+ int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+
+ if (v->bmvtype == BMV_TYPE_DIRECT) {
+ int total_opp, k, f;
+ if (s->next_picture.mb_type[mb_pos + v->mb_off] != MB_TYPE_INTRA) {
+ s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[0] + v->blocks_off][0],
+ v->bfraction, 0, s->quarter_sample);
+ s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[0] + v->blocks_off][1],
+ v->bfraction, 0, s->quarter_sample);
+ s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[0] + v->blocks_off][0],
+ v->bfraction, 1, s->quarter_sample);
+ s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[0] + v->blocks_off][1],
+ v->bfraction, 1, s->quarter_sample);
+
+ total_opp = v->mv_f_next[0][s->block_index[0] + v->blocks_off]
+ + v->mv_f_next[0][s->block_index[1] + v->blocks_off]
+ + v->mv_f_next[0][s->block_index[2] + v->blocks_off]
+ + v->mv_f_next[0][s->block_index[3] + v->blocks_off];
+ f = (total_opp > 2) ? 1 : 0;
+ } else {
+ s->mv[0][0][0] = s->mv[0][0][1] = 0;
+ s->mv[1][0][0] = s->mv[1][0][1] = 0;
+ f = 0;
+ }
+ v->ref_field_type[0] = v->ref_field_type[1] = v->cur_field_type ^ f;
+ for (k = 0; k < 4; k++) {
+ s->current_picture.motion_val[0][s->block_index[k] + v->blocks_off][0] = s->mv[0][0][0];
+ s->current_picture.motion_val[0][s->block_index[k] + v->blocks_off][1] = s->mv[0][0][1];
+ s->current_picture.motion_val[1][s->block_index[k] + v->blocks_off][0] = s->mv[1][0][0];
+ s->current_picture.motion_val[1][s->block_index[k] + v->blocks_off][1] = s->mv[1][0][1];
+ v->mv_f[0][s->block_index[k] + v->blocks_off] = f;
+ v->mv_f[1][s->block_index[k] + v->blocks_off] = f;
+ }
+ return;
+ }
+ if (v->bmvtype == BMV_TYPE_INTERPOLATED) {
+ ff_vc1_pred_mv(v, 0, dmv_x[0], dmv_y[0], 1, v->range_x, v->range_y, v->mb_type[0], pred_flag[0], 0);
+ ff_vc1_pred_mv(v, 0, dmv_x[1], dmv_y[1], 1, v->range_x, v->range_y, v->mb_type[0], pred_flag[1], 1);
+ return;
+ }
+ if (dir) { // backward
+ ff_vc1_pred_mv(v, n, dmv_x[1], dmv_y[1], mv1, v->range_x, v->range_y, v->mb_type[0], pred_flag[1], 1);
+ if (n == 3 || mv1) {
+ ff_vc1_pred_mv(v, 0, dmv_x[0], dmv_y[0], 1, v->range_x, v->range_y, v->mb_type[0], 0, 0);
+ }
+ } else { // forward
+ ff_vc1_pred_mv(v, n, dmv_x[0], dmv_y[0], mv1, v->range_x, v->range_y, v->mb_type[0], pred_flag[0], 0);
+ if (n == 3 || mv1) {
+ ff_vc1_pred_mv(v, 0, dmv_x[1], dmv_y[1], 1, v->range_x, v->range_y, v->mb_type[0], 0, 1);
+ }
+ }
+}
diff --git a/libavcodec/vc1_pred.h b/libavcodec/vc1_pred.h
new file mode 100644
index 0000000..34c9c1a
--- /dev/null
+++ b/libavcodec/vc1_pred.h
@@ -0,0 +1,59 @@
+/*
+ * VC-1 and WMV3 decoder
+ * Copyright (c) 2006-2007 Konstantin Shishkov
+ * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_VC1_PRED_H
+#define AVCODEC_VC1_PRED_H
+
+#include "vc1.h"
+#include "vc1data.h"
+
+void ff_vc1_pred_mv(VC1Context *v, int n, int dmv_x, int dmv_y,
+ int mv1, int r_x, int r_y, uint8_t* is_intra,
+ int pred_flag, int dir);
+void ff_vc1_pred_mv_intfr(VC1Context *v, int n, int dmv_x, int dmv_y,
+ int mvn, int r_x, int r_y, uint8_t* is_intra,
+ int dir);
+void ff_vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2],
+ int direct, int mvtype);
+void ff_vc1_pred_b_mv_intfi(VC1Context *v, int n, int *dmv_x, int *dmv_y,
+ int mv1, int *pred_flag);
+
+static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
+{
+ int n = bfrac;
+
+#if B_FRACTION_DEN==256
+ if (inv)
+ n -= 256;
+ if (!qs)
+ return 2 * ((value * n + 255) >> 9);
+ return (value * n + 128) >> 8;
+#else
+ if (inv)
+ n -= B_FRACTION_DEN;
+ if (!qs)
+ return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
+ return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
+#endif
+}
+
+#endif /* AVCODEC_VC1_PRED_H */
diff --git a/libavcodec/vc1data.h b/libavcodec/vc1data.h
index 84e8188..66c569b 100644
--- a/libavcodec/vc1data.h
+++ b/libavcodec/vc1data.h
@@ -94,8 +94,6 @@ extern VLC ff_vc1_ac_coeff_table[8];
#define VC1_IF_MBMODE_VLC_BITS 5
//@}
-
-/* Denominator used for ff_vc1_bfraction_lut */
#define B_FRACTION_DEN 256
/* pre-computed scales for all bfractions and base=256 */
diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index 7eb8549..610b13e 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -26,5218 +26,15 @@
* VC-1 and WMV3 decoder
*/
-#include "internal.h"
#include "avcodec.h"
-#include "error_resilience.h"
+#include "blockdsp.h"
+#include "get_bits.h"
+#include "internal.h"
#include "mpeg_er.h"
-#include "mpegutils.h"
#include "mpegvideo.h"
-#include "h263.h"
-#include "h264chroma.h"
-#include "qpeldsp.h"
+#include "msmpeg4data.h"
#include "vc1.h"
#include "vc1data.h"
-#include "vc1acdata.h"
-#include "msmpeg4data.h"
-#include "unary.h"
-#include "mathops.h"
-
-#undef NDEBUG
-#include <assert.h>
-
-#define MB_INTRA_VLC_BITS 9
-#define DC_VLC_BITS 9
-
-
-// offset tables for interlaced picture MVDATA decoding
-static const int offset_table1[9] = { 0, 1, 2, 4, 8, 16, 32, 64, 128 };
-static const int offset_table2[9] = { 0, 1, 3, 7, 15, 31, 63, 127, 255 };
-
-/***********************************************************************/
-/**
- * @name VC-1 Bitplane decoding
- * @see 8.7, p56
- * @{
- */
-
-/**
- * Imode types
- * @{
- */
-enum Imode {
- IMODE_RAW,
- IMODE_NORM2,
- IMODE_DIFF2,
- IMODE_NORM6,
- IMODE_DIFF6,
- IMODE_ROWSKIP,
- IMODE_COLSKIP
-};
-/** @} */ //imode defines
-
-static void init_block_index(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
- ff_init_block_index(s);
- if (v->field_mode && !(v->second_field ^ v->tff)) {
- s->dest[0] += s->current_picture_ptr->f->linesize[0];
- s->dest[1] += s->current_picture_ptr->f->linesize[1];
- s->dest[2] += s->current_picture_ptr->f->linesize[2];
- }
-}
-
-/** @} */ //Bitplane group
-
-static void vc1_put_signed_blocks_clamped(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
- int topleft_mb_pos, top_mb_pos;
- int stride_y, fieldtx = 0;
- int v_dist;
-
- /* The put pixels loop is always one MB row behind the decoding loop,
- * because we can only put pixels when overlap filtering is done, and
- * for filtering of the bottom edge of a MB, we need the next MB row
- * present as well.
- * Within the row, the put pixels loop is also one MB col behind the
- * decoding loop. The reason for this is again, because for filtering
- * of the right MB edge, we need the next MB present. */
- if (!s->first_slice_line) {
- if (s->mb_x) {
- topleft_mb_pos = (s->mb_y - 1) * s->mb_stride + s->mb_x - 1;
- if (v->fcm == ILACE_FRAME)
- fieldtx = v->fieldtx_plane[topleft_mb_pos];
- stride_y = s->linesize << fieldtx;
- v_dist = (16 - fieldtx) >> (fieldtx == 0);
- s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][0],
- s->dest[0] - 16 * s->linesize - 16,
- stride_y);
- s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][1],
- s->dest[0] - 16 * s->linesize - 8,
- stride_y);
- s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][2],
- s->dest[0] - v_dist * s->linesize - 16,
- stride_y);
- s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][3],
- s->dest[0] - v_dist * s->linesize - 8,
- stride_y);
- s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][4],
- s->dest[1] - 8 * s->uvlinesize - 8,
- s->uvlinesize);
- s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][5],
- s->dest[2] - 8 * s->uvlinesize - 8,
- s->uvlinesize);
- }
- if (s->mb_x == s->mb_width - 1) {
- top_mb_pos = (s->mb_y - 1) * s->mb_stride + s->mb_x;
- if (v->fcm == ILACE_FRAME)
- fieldtx = v->fieldtx_plane[top_mb_pos];
- stride_y = s->linesize << fieldtx;
- v_dist = fieldtx ? 15 : 8;
- s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][0],
- s->dest[0] - 16 * s->linesize,
- stride_y);
- s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][1],
- s->dest[0] - 16 * s->linesize + 8,
- stride_y);
- s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][2],
- s->dest[0] - v_dist * s->linesize,
- stride_y);
- s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][3],
- s->dest[0] - v_dist * s->linesize + 8,
- stride_y);
- s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][4],
- s->dest[1] - 8 * s->uvlinesize,
- s->uvlinesize);
- s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][5],
- s->dest[2] - 8 * s->uvlinesize,
- s->uvlinesize);
- }
- }
-
-#define inc_blk_idx(idx) do { \
- idx++; \
- if (idx >= v->n_allocated_blks) \
- idx = 0; \
- } while (0)
-
- inc_blk_idx(v->topleft_blk_idx);
- inc_blk_idx(v->top_blk_idx);
- inc_blk_idx(v->left_blk_idx);
- inc_blk_idx(v->cur_blk_idx);
-}
-
-static void vc1_loop_filter_iblk(VC1Context *v, int pq)
-{
- MpegEncContext *s = &v->s;
- int j;
- if (!s->first_slice_line) {
- v->vc1dsp.vc1_v_loop_filter16(s->dest[0], s->linesize, pq);
- if (s->mb_x)
- v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16 * s->linesize, s->linesize, pq);
- v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16 * s->linesize + 8, s->linesize, pq);
- for (j = 0; j < 2; j++) {
- v->vc1dsp.vc1_v_loop_filter8(s->dest[j + 1], s->uvlinesize, pq);
- if (s->mb_x)
- v->vc1dsp.vc1_h_loop_filter8(s->dest[j + 1] - 8 * s->uvlinesize, s->uvlinesize, pq);
- }
- }
- v->vc1dsp.vc1_v_loop_filter16(s->dest[0] + 8 * s->linesize, s->linesize, pq);
-
- if (s->mb_y == s->end_mb_y - 1) {
- if (s->mb_x) {
- v->vc1dsp.vc1_h_loop_filter16(s->dest[0], s->linesize, pq);
- v->vc1dsp.vc1_h_loop_filter8(s->dest[1], s->uvlinesize, pq);
- v->vc1dsp.vc1_h_loop_filter8(s->dest[2], s->uvlinesize, pq);
- }
- v->vc1dsp.vc1_h_loop_filter16(s->dest[0] + 8, s->linesize, pq);
- }
-}
-
-static void vc1_loop_filter_iblk_delayed(VC1Context *v, int pq)
-{
- MpegEncContext *s = &v->s;
- int j;
-
- /* The loopfilter runs 1 row and 1 column behind the overlap filter, which
- * means it runs two rows/cols behind the decoding loop. */
- if (!s->first_slice_line) {
- if (s->mb_x) {
- if (s->mb_y >= s->start_mb_y + 2) {
- v->vc1dsp.vc1_v_loop_filter16(s->dest[0] - 16 * s->linesize - 16, s->linesize, pq);
-
- if (s->mb_x >= 2)
- v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 32 * s->linesize - 16, s->linesize, pq);
- v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 32 * s->linesize - 8, s->linesize, pq);
- for (j = 0; j < 2; j++) {
- v->vc1dsp.vc1_v_loop_filter8(s->dest[j + 1] - 8 * s->uvlinesize - 8, s->uvlinesize, pq);
- if (s->mb_x >= 2) {
- v->vc1dsp.vc1_h_loop_filter8(s->dest[j + 1] - 16 * s->uvlinesize - 8, s->uvlinesize, pq);
- }
- }
- }
- v->vc1dsp.vc1_v_loop_filter16(s->dest[0] - 8 * s->linesize - 16, s->linesize, pq);
- }
-
- if (s->mb_x == s->mb_width - 1) {
- if (s->mb_y >= s->start_mb_y + 2) {
- v->vc1dsp.vc1_v_loop_filter16(s->dest[0] - 16 * s->linesize, s->linesize, pq);
-
- if (s->mb_x)
- v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 32 * s->linesize, s->linesize, pq);
- v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 32 * s->linesize + 8, s->linesize, pq);
- for (j = 0; j < 2; j++) {
- v->vc1dsp.vc1_v_loop_filter8(s->dest[j + 1] - 8 * s->uvlinesize, s->uvlinesize, pq);
- if (s->mb_x >= 2) {
- v->vc1dsp.vc1_h_loop_filter8(s->dest[j + 1] - 16 * s->uvlinesize, s->uvlinesize, pq);
- }
- }
- }
- v->vc1dsp.vc1_v_loop_filter16(s->dest[0] - 8 * s->linesize, s->linesize, pq);
- }
-
- if (s->mb_y == s->end_mb_y) {
- if (s->mb_x) {
- if (s->mb_x >= 2)
- v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16 * s->linesize - 16, s->linesize, pq);
- v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16 * s->linesize - 8, s->linesize, pq);
- if (s->mb_x >= 2) {
- for (j = 0; j < 2; j++) {
- v->vc1dsp.vc1_h_loop_filter8(s->dest[j + 1] - 8 * s->uvlinesize - 8, s->uvlinesize, pq);
- }
- }
- }
-
- if (s->mb_x == s->mb_width - 1) {
- if (s->mb_x)
- v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16 * s->linesize, s->linesize, pq);
- v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16 * s->linesize + 8, s->linesize, pq);
- if (s->mb_x) {
- for (j = 0; j < 2; j++) {
- v->vc1dsp.vc1_h_loop_filter8(s->dest[j + 1] - 8 * s->uvlinesize, s->uvlinesize, pq);
- }
- }
- }
- }
- }
-}
-
-static void vc1_smooth_overlap_filter_iblk(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
- int mb_pos;
-
- if (v->condover == CONDOVER_NONE)
- return;
-
- mb_pos = s->mb_x + s->mb_y * s->mb_stride;
-
- /* Within a MB, the horizontal overlap always runs before the vertical.
- * To accomplish that, we run the H on left and internal borders of the
- * currently decoded MB. Then, we wait for the next overlap iteration
- * to do H overlap on the right edge of this MB, before moving over and
- * running the V overlap. Therefore, the V overlap makes us trail by one
- * MB col and the H overlap filter makes us trail by one MB row. This
- * is reflected in the time at which we run the put_pixels loop. */
- if (v->condover == CONDOVER_ALL || v->pq >= 9 || v->over_flags_plane[mb_pos]) {
- if (s->mb_x && (v->condover == CONDOVER_ALL || v->pq >= 9 ||
- v->over_flags_plane[mb_pos - 1])) {
- v->vc1dsp.vc1_h_s_overlap(v->block[v->left_blk_idx][1],
- v->block[v->cur_blk_idx][0]);
- v->vc1dsp.vc1_h_s_overlap(v->block[v->left_blk_idx][3],
- v->block[v->cur_blk_idx][2]);
- if (!(s->flags & CODEC_FLAG_GRAY)) {
- v->vc1dsp.vc1_h_s_overlap(v->block[v->left_blk_idx][4],
- v->block[v->cur_blk_idx][4]);
- v->vc1dsp.vc1_h_s_overlap(v->block[v->left_blk_idx][5],
- v->block[v->cur_blk_idx][5]);
- }
- }
- v->vc1dsp.vc1_h_s_overlap(v->block[v->cur_blk_idx][0],
- v->block[v->cur_blk_idx][1]);
- v->vc1dsp.vc1_h_s_overlap(v->block[v->cur_blk_idx][2],
- v->block[v->cur_blk_idx][3]);
-
- if (s->mb_x == s->mb_width - 1) {
- if (!s->first_slice_line && (v->condover == CONDOVER_ALL || v->pq >= 9 ||
- v->over_flags_plane[mb_pos - s->mb_stride])) {
- v->vc1dsp.vc1_v_s_overlap(v->block[v->top_blk_idx][2],
- v->block[v->cur_blk_idx][0]);
- v->vc1dsp.vc1_v_s_overlap(v->block[v->top_blk_idx][3],
- v->block[v->cur_blk_idx][1]);
- if (!(s->flags & CODEC_FLAG_GRAY)) {
- v->vc1dsp.vc1_v_s_overlap(v->block[v->top_blk_idx][4],
- v->block[v->cur_blk_idx][4]);
- v->vc1dsp.vc1_v_s_overlap(v->block[v->top_blk_idx][5],
- v->block[v->cur_blk_idx][5]);
- }
- }
- v->vc1dsp.vc1_v_s_overlap(v->block[v->cur_blk_idx][0],
- v->block[v->cur_blk_idx][2]);
- v->vc1dsp.vc1_v_s_overlap(v->block[v->cur_blk_idx][1],
- v->block[v->cur_blk_idx][3]);
- }
- }
- if (s->mb_x && (v->condover == CONDOVER_ALL || v->over_flags_plane[mb_pos - 1])) {
- if (!s->first_slice_line && (v->condover == CONDOVER_ALL || v->pq >= 9 ||
- v->over_flags_plane[mb_pos - s->mb_stride - 1])) {
- v->vc1dsp.vc1_v_s_overlap(v->block[v->topleft_blk_idx][2],
- v->block[v->left_blk_idx][0]);
- v->vc1dsp.vc1_v_s_overlap(v->block[v->topleft_blk_idx][3],
- v->block[v->left_blk_idx][1]);
- if (!(s->flags & CODEC_FLAG_GRAY)) {
- v->vc1dsp.vc1_v_s_overlap(v->block[v->topleft_blk_idx][4],
- v->block[v->left_blk_idx][4]);
- v->vc1dsp.vc1_v_s_overlap(v->block[v->topleft_blk_idx][5],
- v->block[v->left_blk_idx][5]);
- }
- }
- v->vc1dsp.vc1_v_s_overlap(v->block[v->left_blk_idx][0],
- v->block[v->left_blk_idx][2]);
- v->vc1dsp.vc1_v_s_overlap(v->block[v->left_blk_idx][1],
- v->block[v->left_blk_idx][3]);
- }
-}
-
-/** Do motion compensation over 1 macroblock
- * Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
- */
-static void vc1_mc_1mv(VC1Context *v, int dir)
-{
- MpegEncContext *s = &v->s;
- H264ChromaContext *h264chroma = &v->h264chroma;
- uint8_t *srcY, *srcU, *srcV;
- int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
- int v_edge_pos = s->v_edge_pos >> v->field_mode;
- int i;
- uint8_t (*luty)[256], (*lutuv)[256];
- int use_ic;
-
- if ((!v->field_mode ||
- (v->ref_field_type[dir] == 1 && v->cur_field_type == 1)) &&
- !v->s.last_picture.f->data[0])
- return;
-
- mx = s->mv[dir][0][0];
- my = s->mv[dir][0][1];
-
- // store motion vectors for further use in B frames
- if (s->pict_type == AV_PICTURE_TYPE_P) {
- for (i = 0; i < 4; i++) {
- s->current_picture.motion_val[1][s->block_index[i] + v->blocks_off][0] = mx;
- s->current_picture.motion_val[1][s->block_index[i] + v->blocks_off][1] = my;
- }
- }
-
- uvmx = (mx + ((mx & 3) == 3)) >> 1;
- uvmy = (my + ((my & 3) == 3)) >> 1;
- v->luma_mv[s->mb_x][0] = uvmx;
- v->luma_mv[s->mb_x][1] = uvmy;
-
- if (v->field_mode &&
- v->cur_field_type != v->ref_field_type[dir]) {
- my = my - 2 + 4 * v->cur_field_type;
- uvmy = uvmy - 2 + 4 * v->cur_field_type;
- }
-
- // fastuvmc shall be ignored for interlaced frame picture
- if (v->fastuvmc && (v->fcm != ILACE_FRAME)) {
- uvmx = uvmx + ((uvmx < 0) ? (uvmx & 1) : -(uvmx & 1));
- uvmy = uvmy + ((uvmy < 0) ? (uvmy & 1) : -(uvmy & 1));
- }
- if (!dir) {
- if (v->field_mode && (v->cur_field_type != v->ref_field_type[dir]) && v->second_field) {
- srcY = s->current_picture.f->data[0];
- srcU = s->current_picture.f->data[1];
- srcV = s->current_picture.f->data[2];
- luty = v->curr_luty;
- lutuv = v->curr_lutuv;
- use_ic = v->curr_use_ic;
- } else {
- srcY = s->last_picture.f->data[0];
- srcU = s->last_picture.f->data[1];
- srcV = s->last_picture.f->data[2];
- luty = v->last_luty;
- lutuv = v->last_lutuv;
- use_ic = v->last_use_ic;
- }
- } else {
- srcY = s->next_picture.f->data[0];
- srcU = s->next_picture.f->data[1];
- srcV = s->next_picture.f->data[2];
- luty = v->next_luty;
- lutuv = v->next_lutuv;
- use_ic = v->next_use_ic;
- }
-
- if (!srcY || !srcU) {
- av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
- return;
- }
-
- src_x = s->mb_x * 16 + (mx >> 2);
- src_y = s->mb_y * 16 + (my >> 2);
- uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
- uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
-
- if (v->profile != PROFILE_ADVANCED) {
- src_x = av_clip( src_x, -16, s->mb_width * 16);
- src_y = av_clip( src_y, -16, s->mb_height * 16);
- uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
- uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
- } else {
- src_x = av_clip( src_x, -17, s->avctx->coded_width);
- src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
- uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
- uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
- }
-
- srcY += src_y * s->linesize + src_x;
- srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
- srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
-
- if (v->field_mode && v->ref_field_type[dir]) {
- srcY += s->current_picture_ptr->f->linesize[0];
- srcU += s->current_picture_ptr->f->linesize[1];
- srcV += s->current_picture_ptr->f->linesize[2];
- }
-
- /* for grayscale we should not try to read from unknown area */
- if (s->flags & CODEC_FLAG_GRAY) {
- srcU = s->edge_emu_buffer + 18 * s->linesize;
- srcV = s->edge_emu_buffer + 18 * s->linesize;
- }
-
- if (v->rangeredfrm || use_ic
- || s->h_edge_pos < 22 || v_edge_pos < 22
- || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel * 3
- || (unsigned)(src_y - 1) > v_edge_pos - (my&3) - 16 - 3) {
- uint8_t *uvbuf = s->edge_emu_buffer + 19 * s->linesize;
-
- srcY -= s->mspel * (1 + s->linesize);
- s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
- s->linesize, s->linesize,
- 17 + s->mspel * 2, 17 + s->mspel * 2,
- src_x - s->mspel, src_y - s->mspel,
- s->h_edge_pos, v_edge_pos);
- srcY = s->edge_emu_buffer;
- s->vdsp.emulated_edge_mc(uvbuf, srcU,
- s->uvlinesize, s->uvlinesize,
- 8 + 1, 8 + 1,
- uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, v_edge_pos >> 1);
- s->vdsp.emulated_edge_mc(uvbuf + 16, srcV,
- s->uvlinesize, s->uvlinesize,
- 8 + 1, 8 + 1,
- uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, v_edge_pos >> 1);
- srcU = uvbuf;
- srcV = uvbuf + 16;
- /* if we deal with range reduction we need to scale source blocks */
- if (v->rangeredfrm) {
- int i, j;
- uint8_t *src, *src2;
-
- src = srcY;
- for (j = 0; j < 17 + s->mspel * 2; j++) {
- for (i = 0; i < 17 + s->mspel * 2; i++)
- src[i] = ((src[i] - 128) >> 1) + 128;
- src += s->linesize;
- }
- src = srcU;
- src2 = srcV;
- for (j = 0; j < 9; j++) {
- for (i = 0; i < 9; i++) {
- src[i] = ((src[i] - 128) >> 1) + 128;
- src2[i] = ((src2[i] - 128) >> 1) + 128;
- }
- src += s->uvlinesize;
- src2 += s->uvlinesize;
- }
- }
- /* if we deal with intensity compensation we need to scale source blocks */
- if (use_ic) {
- int i, j;
- uint8_t *src, *src2;
-
- src = srcY;
- for (j = 0; j < 17 + s->mspel * 2; j++) {
- int f = v->field_mode ? v->ref_field_type[dir] : ((j + src_y - s->mspel) & 1) ;
- for (i = 0; i < 17 + s->mspel * 2; i++)
- src[i] = luty[f][src[i]];
- src += s->linesize;
- }
- src = srcU;
- src2 = srcV;
- for (j = 0; j < 9; j++) {
- int f = v->field_mode ? v->ref_field_type[dir] : ((j + uvsrc_y) & 1);
- for (i = 0; i < 9; i++) {
- src[i] = lutuv[f][src[i]];
- src2[i] = lutuv[f][src2[i]];
- }
- src += s->uvlinesize;
- src2 += s->uvlinesize;
- }
- }
- srcY += s->mspel * (1 + s->linesize);
- }
-
- if (s->mspel) {
- dxy = ((my & 3) << 2) | (mx & 3);
- v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd);
- v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
- srcY += s->linesize * 8;
- v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd);
- v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
- } else { // hpel mc - always used for luma
- dxy = (my & 2) | ((mx & 2) >> 1);
- if (!v->rnd)
- s->hdsp.put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
- else
- s->hdsp.put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
- }
-
- if (s->flags & CODEC_FLAG_GRAY) return;
- /* Chroma MC always uses qpel bilinear */
- uvmx = (uvmx & 3) << 1;
- uvmy = (uvmy & 3) << 1;
- if (!v->rnd) {
- h264chroma->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
- h264chroma->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
- } else {
- v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
- v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
- }
-}
-
-static inline int median4(int a, int b, int c, int d)
-{
- if (a < b) {
- if (c < d) return (FFMIN(b, d) + FFMAX(a, c)) / 2;
- else return (FFMIN(b, c) + FFMAX(a, d)) / 2;
- } else {
- if (c < d) return (FFMIN(a, d) + FFMAX(b, c)) / 2;
- else return (FFMIN(a, c) + FFMAX(b, d)) / 2;
- }
-}
-
-/** Do motion compensation for 4-MV macroblock - luminance block
- */
-static void vc1_mc_4mv_luma(VC1Context *v, int n, int dir, int avg)
-{
- MpegEncContext *s = &v->s;
- uint8_t *srcY;
- int dxy, mx, my, src_x, src_y;
- int off;
- int fieldmv = (v->fcm == ILACE_FRAME) ? v->blk_mv_type[s->block_index[n]] : 0;
- int v_edge_pos = s->v_edge_pos >> v->field_mode;
- uint8_t (*luty)[256];
- int use_ic;
-
- if ((!v->field_mode ||
- (v->ref_field_type[dir] == 1 && v->cur_field_type == 1)) &&
- !v->s.last_picture.f->data[0])
- return;
-
- mx = s->mv[dir][n][0];
- my = s->mv[dir][n][1];
-
- if (!dir) {
- if (v->field_mode && (v->cur_field_type != v->ref_field_type[dir]) && v->second_field) {
- srcY = s->current_picture.f->data[0];
- luty = v->curr_luty;
- use_ic = v->curr_use_ic;
- } else {
- srcY = s->last_picture.f->data[0];
- luty = v->last_luty;
- use_ic = v->last_use_ic;
- }
- } else {
- srcY = s->next_picture.f->data[0];
- luty = v->next_luty;
- use_ic = v->next_use_ic;
- }
-
- if (!srcY) {
- av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
- return;
- }
-
- if (v->field_mode) {
- if (v->cur_field_type != v->ref_field_type[dir])
- my = my - 2 + 4 * v->cur_field_type;
- }
-
- if (s->pict_type == AV_PICTURE_TYPE_P && n == 3 && v->field_mode) {
- int same_count = 0, opp_count = 0, k;
- int chosen_mv[2][4][2], f;
- int tx, ty;
- for (k = 0; k < 4; k++) {
- f = v->mv_f[0][s->block_index[k] + v->blocks_off];
- chosen_mv[f][f ? opp_count : same_count][0] = s->mv[0][k][0];
- chosen_mv[f][f ? opp_count : same_count][1] = s->mv[0][k][1];
- opp_count += f;
- same_count += 1 - f;
- }
- f = opp_count > same_count;
- switch (f ? opp_count : same_count) {
- case 4:
- tx = median4(chosen_mv[f][0][0], chosen_mv[f][1][0],
- chosen_mv[f][2][0], chosen_mv[f][3][0]);
- ty = median4(chosen_mv[f][0][1], chosen_mv[f][1][1],
- chosen_mv[f][2][1], chosen_mv[f][3][1]);
- break;
- case 3:
- tx = mid_pred(chosen_mv[f][0][0], chosen_mv[f][1][0], chosen_mv[f][2][0]);
- ty = mid_pred(chosen_mv[f][0][1], chosen_mv[f][1][1], chosen_mv[f][2][1]);
- break;
- case 2:
- tx = (chosen_mv[f][0][0] + chosen_mv[f][1][0]) / 2;
- ty = (chosen_mv[f][0][1] + chosen_mv[f][1][1]) / 2;
- break;
- }
- s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = tx;
- s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = ty;
- for (k = 0; k < 4; k++)
- v->mv_f[1][s->block_index[k] + v->blocks_off] = f;
- }
-
- if (v->fcm == ILACE_FRAME) { // not sure if needed for other types of picture
- int qx, qy;
- int width = s->avctx->coded_width;
- int height = s->avctx->coded_height >> 1;
- if (s->pict_type == AV_PICTURE_TYPE_P) {
- s->current_picture.motion_val[1][s->block_index[n] + v->blocks_off][0] = mx;
- s->current_picture.motion_val[1][s->block_index[n] + v->blocks_off][1] = my;
- }
- qx = (s->mb_x * 16) + (mx >> 2);
- qy = (s->mb_y * 8) + (my >> 3);
-
- if (qx < -17)
- mx -= 4 * (qx + 17);
- else if (qx > width)
- mx -= 4 * (qx - width);
- if (qy < -18)
- my -= 8 * (qy + 18);
- else if (qy > height + 1)
- my -= 8 * (qy - height - 1);
- }
-
- if ((v->fcm == ILACE_FRAME) && fieldmv)
- off = ((n > 1) ? s->linesize : 0) + (n & 1) * 8;
- else
- off = s->linesize * 4 * (n & 2) + (n & 1) * 8;
-
- src_x = s->mb_x * 16 + (n & 1) * 8 + (mx >> 2);
- if (!fieldmv)
- src_y = s->mb_y * 16 + (n & 2) * 4 + (my >> 2);
- else
- src_y = s->mb_y * 16 + ((n > 1) ? 1 : 0) + (my >> 2);
-
- if (v->profile != PROFILE_ADVANCED) {
- src_x = av_clip(src_x, -16, s->mb_width * 16);
- src_y = av_clip(src_y, -16, s->mb_height * 16);
- } else {
- src_x = av_clip(src_x, -17, s->avctx->coded_width);
- if (v->fcm == ILACE_FRAME) {
- if (src_y & 1)
- src_y = av_clip(src_y, -17, s->avctx->coded_height + 1);
- else
- src_y = av_clip(src_y, -18, s->avctx->coded_height);
- } else {
- src_y = av_clip(src_y, -18, s->avctx->coded_height + 1);
- }
- }
-
- srcY += src_y * s->linesize + src_x;
- if (v->field_mode && v->ref_field_type[dir])
- srcY += s->current_picture_ptr->f->linesize[0];
-
- if (fieldmv && !(src_y & 1))
- v_edge_pos--;
- if (fieldmv && (src_y & 1) && src_y < 4)
- src_y--;
- if (v->rangeredfrm || use_ic
- || s->h_edge_pos < 13 || v_edge_pos < 23
- || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx & 3) - 8 - s->mspel * 2
- || (unsigned)(src_y - (s->mspel << fieldmv)) > v_edge_pos - (my & 3) - ((8 + s->mspel * 2) << fieldmv)) {
- srcY -= s->mspel * (1 + (s->linesize << fieldmv));
- /* check emulate edge stride and offset */
- s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
- s->linesize, s->linesize,
- 9 + s->mspel * 2, (9 + s->mspel * 2) << fieldmv,
- src_x - s->mspel, src_y - (s->mspel << fieldmv),
- s->h_edge_pos, v_edge_pos);
- srcY = s->edge_emu_buffer;
- /* if we deal with range reduction we need to scale source blocks */
- if (v->rangeredfrm) {
- int i, j;
- uint8_t *src;
-
- src = srcY;
- for (j = 0; j < 9 + s->mspel * 2; j++) {
- for (i = 0; i < 9 + s->mspel * 2; i++)
- src[i] = ((src[i] - 128) >> 1) + 128;
- src += s->linesize << fieldmv;
- }
- }
- /* if we deal with intensity compensation we need to scale source blocks */
- if (use_ic) {
- int i, j;
- uint8_t *src;
-
- src = srcY;
- for (j = 0; j < 9 + s->mspel * 2; j++) {
- int f = v->field_mode ? v->ref_field_type[dir] : (((j<<fieldmv)+src_y - (s->mspel << fieldmv)) & 1);
- for (i = 0; i < 9 + s->mspel * 2; i++)
- src[i] = luty[f][src[i]];
- src += s->linesize << fieldmv;
- }
- }
- srcY += s->mspel * (1 + (s->linesize << fieldmv));
- }
-
- if (s->mspel) {
- dxy = ((my & 3) << 2) | (mx & 3);
- if (avg)
- v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize << fieldmv, v->rnd);
- else
- v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize << fieldmv, v->rnd);
- } else { // hpel mc - always used for luma
- dxy = (my & 2) | ((mx & 2) >> 1);
- if (!v->rnd)
- s->hdsp.put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
- else
- s->hdsp.put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
- }
-}
-
-static av_always_inline int get_chroma_mv(int *mvx, int *mvy, int *a, int flag, int *tx, int *ty)
-{
- int idx, i;
- static const int count[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};
-
- idx = ((a[3] != flag) << 3)
- | ((a[2] != flag) << 2)
- | ((a[1] != flag) << 1)
- | (a[0] != flag);
- if (!idx) {
- *tx = median4(mvx[0], mvx[1], mvx[2], mvx[3]);
- *ty = median4(mvy[0], mvy[1], mvy[2], mvy[3]);
- return 4;
- } else if (count[idx] == 1) {
- switch (idx) {
- case 0x1:
- *tx = mid_pred(mvx[1], mvx[2], mvx[3]);
- *ty = mid_pred(mvy[1], mvy[2], mvy[3]);
- return 3;
- case 0x2:
- *tx = mid_pred(mvx[0], mvx[2], mvx[3]);
- *ty = mid_pred(mvy[0], mvy[2], mvy[3]);
- return 3;
- case 0x4:
- *tx = mid_pred(mvx[0], mvx[1], mvx[3]);
- *ty = mid_pred(mvy[0], mvy[1], mvy[3]);
- return 3;
- case 0x8:
- *tx = mid_pred(mvx[0], mvx[1], mvx[2]);
- *ty = mid_pred(mvy[0], mvy[1], mvy[2]);
- return 3;
- }
- } else if (count[idx] == 2) {
- int t1 = 0, t2 = 0;
- for (i = 0; i < 3; i++)
- if (!a[i]) {
- t1 = i;
- break;
- }
- for (i = t1 + 1; i < 4; i++)
- if (!a[i]) {
- t2 = i;
- break;
- }
- *tx = (mvx[t1] + mvx[t2]) / 2;
- *ty = (mvy[t1] + mvy[t2]) / 2;
- return 2;
- } else {
- return 0;
- }
- return -1;
-}
-
-/** Do motion compensation for 4-MV macroblock - both chroma blocks
- */
-static void vc1_mc_4mv_chroma(VC1Context *v, int dir)
-{
- MpegEncContext *s = &v->s;
- H264ChromaContext *h264chroma = &v->h264chroma;
- uint8_t *srcU, *srcV;
- int uvmx, uvmy, uvsrc_x, uvsrc_y;
- int k, tx = 0, ty = 0;
- int mvx[4], mvy[4], intra[4], mv_f[4];
- int valid_count;
- int chroma_ref_type = v->cur_field_type;
- int v_edge_pos = s->v_edge_pos >> v->field_mode;
- uint8_t (*lutuv)[256];
- int use_ic;
-
- if (!v->field_mode && !v->s.last_picture.f->data[0])
- return;
- if (s->flags & CODEC_FLAG_GRAY)
- return;
-
- for (k = 0; k < 4; k++) {
- mvx[k] = s->mv[dir][k][0];
- mvy[k] = s->mv[dir][k][1];
- intra[k] = v->mb_type[0][s->block_index[k]];
- if (v->field_mode)
- mv_f[k] = v->mv_f[dir][s->block_index[k] + v->blocks_off];
- }
-
- /* calculate chroma MV vector from four luma MVs */
- if (!v->field_mode || (v->field_mode && !v->numref)) {
- valid_count = get_chroma_mv(mvx, mvy, intra, 0, &tx, &ty);
- chroma_ref_type = v->reffield;
- if (!valid_count) {
- s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0;
- s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0;
- v->luma_mv[s->mb_x][0] = v->luma_mv[s->mb_x][1] = 0;
- return; //no need to do MC for intra blocks
- }
- } else {
- int dominant = 0;
- if (mv_f[0] + mv_f[1] + mv_f[2] + mv_f[3] > 2)
- dominant = 1;
- valid_count = get_chroma_mv(mvx, mvy, mv_f, dominant, &tx, &ty);
- if (dominant)
- chroma_ref_type = !v->cur_field_type;
- }
- if (v->field_mode && chroma_ref_type == 1 && v->cur_field_type == 1 && !v->s.last_picture.f->data[0])
- return;
- s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = tx;
- s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = ty;
- uvmx = (tx + ((tx & 3) == 3)) >> 1;
- uvmy = (ty + ((ty & 3) == 3)) >> 1;
-
- v->luma_mv[s->mb_x][0] = uvmx;
- v->luma_mv[s->mb_x][1] = uvmy;
-
- if (v->fastuvmc) {
- uvmx = uvmx + ((uvmx < 0) ? (uvmx & 1) : -(uvmx & 1));
- uvmy = uvmy + ((uvmy < 0) ? (uvmy & 1) : -(uvmy & 1));
- }
- // Field conversion bias
- if (v->cur_field_type != chroma_ref_type)
- uvmy += 2 - 4 * chroma_ref_type;
-
- uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
- uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
-
- if (v->profile != PROFILE_ADVANCED) {
- uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
- uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
- } else {
- uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
- uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
- }
-
- if (!dir) {
- if (v->field_mode && (v->cur_field_type != chroma_ref_type) && v->second_field) {
- srcU = s->current_picture.f->data[1];
- srcV = s->current_picture.f->data[2];
- lutuv = v->curr_lutuv;
- use_ic = v->curr_use_ic;
- } else {
- srcU = s->last_picture.f->data[1];
- srcV = s->last_picture.f->data[2];
- lutuv = v->last_lutuv;
- use_ic = v->last_use_ic;
- }
- } else {
- srcU = s->next_picture.f->data[1];
- srcV = s->next_picture.f->data[2];
- lutuv = v->next_lutuv;
- use_ic = v->next_use_ic;
- }
-
- if (!srcU) {
- av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
- return;
- }
-
- srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
- srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
-
- if (v->field_mode) {
- if (chroma_ref_type) {
- srcU += s->current_picture_ptr->f->linesize[1];
- srcV += s->current_picture_ptr->f->linesize[2];
- }
- }
-
- if (v->rangeredfrm || use_ic
- || s->h_edge_pos < 18 || v_edge_pos < 18
- || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
- || (unsigned)uvsrc_y > (v_edge_pos >> 1) - 9) {
- s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcU,
- s->uvlinesize, s->uvlinesize,
- 8 + 1, 8 + 1, uvsrc_x, uvsrc_y,
- s->h_edge_pos >> 1, v_edge_pos >> 1);
- s->vdsp.emulated_edge_mc(s->edge_emu_buffer + 16, srcV,
- s->uvlinesize, s->uvlinesize,
- 8 + 1, 8 + 1, uvsrc_x, uvsrc_y,
- s->h_edge_pos >> 1, v_edge_pos >> 1);
- srcU = s->edge_emu_buffer;
- srcV = s->edge_emu_buffer + 16;
-
- /* if we deal with range reduction we need to scale source blocks */
- if (v->rangeredfrm) {
- int i, j;
- uint8_t *src, *src2;
-
- src = srcU;
- src2 = srcV;
- for (j = 0; j < 9; j++) {
- for (i = 0; i < 9; i++) {
- src[i] = ((src[i] - 128) >> 1) + 128;
- src2[i] = ((src2[i] - 128) >> 1) + 128;
- }
- src += s->uvlinesize;
- src2 += s->uvlinesize;
- }
- }
- /* if we deal with intensity compensation we need to scale source blocks */
- if (use_ic) {
- int i, j;
- uint8_t *src, *src2;
-
- src = srcU;
- src2 = srcV;
- for (j = 0; j < 9; j++) {
- int f = v->field_mode ? chroma_ref_type : ((j + uvsrc_y) & 1);
- for (i = 0; i < 9; i++) {
- src[i] = lutuv[f][src[i]];
- src2[i] = lutuv[f][src2[i]];
- }
- src += s->uvlinesize;
- src2 += s->uvlinesize;
- }
- }
- }
-
- /* Chroma MC always uses qpel bilinear */
- uvmx = (uvmx & 3) << 1;
- uvmy = (uvmy & 3) << 1;
- if (!v->rnd) {
- h264chroma->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
- h264chroma->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
- } else {
- v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
- v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
- }
-}
-
-/** Do motion compensation for 4-MV interlaced frame chroma macroblock (both U and V)
- */
-static void vc1_mc_4mv_chroma4(VC1Context *v, int dir, int dir2, int avg)
-{
- MpegEncContext *s = &v->s;
- H264ChromaContext *h264chroma = &v->h264chroma;
- uint8_t *srcU, *srcV;
- int uvsrc_x, uvsrc_y;
- int uvmx_field[4], uvmy_field[4];
- int i, off, tx, ty;
- int fieldmv = v->blk_mv_type[s->block_index[0]];
- static const int s_rndtblfield[16] = { 0, 0, 1, 2, 4, 4, 5, 6, 2, 2, 3, 8, 6, 6, 7, 12 };
- int v_dist = fieldmv ? 1 : 4; // vertical offset for lower sub-blocks
- int v_edge_pos = s->v_edge_pos >> 1;
- int use_ic;
- uint8_t (*lutuv)[256];
-
- if (s->flags & CODEC_FLAG_GRAY)
- return;
-
- for (i = 0; i < 4; i++) {
- int d = i < 2 ? dir: dir2;
- tx = s->mv[d][i][0];
- uvmx_field[i] = (tx + ((tx & 3) == 3)) >> 1;
- ty = s->mv[d][i][1];
- if (fieldmv)
- uvmy_field[i] = (ty >> 4) * 8 + s_rndtblfield[ty & 0xF];
- else
- uvmy_field[i] = (ty + ((ty & 3) == 3)) >> 1;
- }
-
- for (i = 0; i < 4; i++) {
- off = (i & 1) * 4 + ((i & 2) ? v_dist * s->uvlinesize : 0);
- uvsrc_x = s->mb_x * 8 + (i & 1) * 4 + (uvmx_field[i] >> 2);
- uvsrc_y = s->mb_y * 8 + ((i & 2) ? v_dist : 0) + (uvmy_field[i] >> 2);
- // FIXME: implement proper pull-back (see vc1cropmv.c, vc1CROPMV_ChromaPullBack())
- uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
- uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
- if (i < 2 ? dir : dir2) {
- srcU = s->next_picture.f->data[1] + uvsrc_y * s->uvlinesize + uvsrc_x;
- srcV = s->next_picture.f->data[2] + uvsrc_y * s->uvlinesize + uvsrc_x;
- lutuv = v->next_lutuv;
- use_ic = v->next_use_ic;
- } else {
- srcU = s->last_picture.f->data[1] + uvsrc_y * s->uvlinesize + uvsrc_x;
- srcV = s->last_picture.f->data[2] + uvsrc_y * s->uvlinesize + uvsrc_x;
- lutuv = v->last_lutuv;
- use_ic = v->last_use_ic;
- }
- uvmx_field[i] = (uvmx_field[i] & 3) << 1;
- uvmy_field[i] = (uvmy_field[i] & 3) << 1;
-
- if (fieldmv && !(uvsrc_y & 1))
- v_edge_pos--;
- if (fieldmv && (uvsrc_y & 1) && uvsrc_y < 2)
- uvsrc_y--;
- if (use_ic
- || s->h_edge_pos < 10 || v_edge_pos < (5 << fieldmv)
- || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 5
- || (unsigned)uvsrc_y > v_edge_pos - (5 << fieldmv)) {
- s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcU,
- s->uvlinesize, s->uvlinesize,
- 5, (5 << fieldmv), uvsrc_x, uvsrc_y,
- s->h_edge_pos >> 1, v_edge_pos);
- s->vdsp.emulated_edge_mc(s->edge_emu_buffer + 16, srcV,
- s->uvlinesize, s->uvlinesize,
- 5, (5 << fieldmv), uvsrc_x, uvsrc_y,
- s->h_edge_pos >> 1, v_edge_pos);
- srcU = s->edge_emu_buffer;
- srcV = s->edge_emu_buffer + 16;
-
- /* if we deal with intensity compensation we need to scale source blocks */
- if (use_ic) {
- int i, j;
- uint8_t *src, *src2;
-
- src = srcU;
- src2 = srcV;
- for (j = 0; j < 5; j++) {
- int f = (uvsrc_y + (j << fieldmv)) & 1;
- for (i = 0; i < 5; i++) {
- src[i] = lutuv[f][src[i]];
- src2[i] = lutuv[f][src2[i]];
- }
- src += s->uvlinesize << fieldmv;
- src2 += s->uvlinesize << fieldmv;
- }
- }
- }
- if (avg) {
- if (!v->rnd) {
- h264chroma->avg_h264_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
- h264chroma->avg_h264_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
- } else {
- v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
- v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
- }
- } else {
- if (!v->rnd) {
- h264chroma->put_h264_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
- h264chroma->put_h264_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
- } else {
- v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
- v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
- }
- }
- }
-}
-
-/***********************************************************************/
-/**
- * @name VC-1 Block-level functions
- * @see 7.1.4, p91 and 8.1.1.7, p(1)04
- * @{
- */
-
-/**
- * @def GET_MQUANT
- * @brief Get macroblock-level quantizer scale
- */
-#define GET_MQUANT() \
- if (v->dquantfrm) { \
- int edges = 0; \
- if (v->dqprofile == DQPROFILE_ALL_MBS) { \
- if (v->dqbilevel) { \
- mquant = (get_bits1(gb)) ? v->altpq : v->pq; \
- } else { \
- mqdiff = get_bits(gb, 3); \
- if (mqdiff != 7) \
- mquant = v->pq + mqdiff; \
- else \
- mquant = get_bits(gb, 5); \
- } \
- } \
- if (v->dqprofile == DQPROFILE_SINGLE_EDGE) \
- edges = 1 << v->dqsbedge; \
- else if (v->dqprofile == DQPROFILE_DOUBLE_EDGES) \
- edges = (3 << v->dqsbedge) % 15; \
- else if (v->dqprofile == DQPROFILE_FOUR_EDGES) \
- edges = 15; \
- if ((edges&1) && !s->mb_x) \
- mquant = v->altpq; \
- if ((edges&2) && s->first_slice_line) \
- mquant = v->altpq; \
- if ((edges&4) && s->mb_x == (s->mb_width - 1)) \
- mquant = v->altpq; \
- if ((edges&8) && s->mb_y == (s->mb_height - 1)) \
- mquant = v->altpq; \
- if (!mquant || mquant > 31) { \
- av_log(v->s.avctx, AV_LOG_ERROR, \
- "Overriding invalid mquant %d\n", mquant); \
- mquant = 1; \
- } \
- }
-
-/**
- * @def GET_MVDATA(_dmv_x, _dmv_y)
- * @brief Get MV differentials
- * @see MVDATA decoding from 8.3.5.2, p(1)20
- * @param _dmv_x Horizontal differential for decoded MV
- * @param _dmv_y Vertical differential for decoded MV
- */
-#define GET_MVDATA(_dmv_x, _dmv_y) \
- index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table, \
- VC1_MV_DIFF_VLC_BITS, 2); \
- if (index > 36) { \
- mb_has_coeffs = 1; \
- index -= 37; \
- } else \
- mb_has_coeffs = 0; \
- s->mb_intra = 0; \
- if (!index) { \
- _dmv_x = _dmv_y = 0; \
- } else if (index == 35) { \
- _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \
- _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \
- } else if (index == 36) { \
- _dmv_x = 0; \
- _dmv_y = 0; \
- s->mb_intra = 1; \
- } else { \
- index1 = index % 6; \
- if (!s->quarter_sample && index1 == 5) val = 1; \
- else val = 0; \
- if (size_table[index1] - val > 0) \
- val = get_bits(gb, size_table[index1] - val); \
- else val = 0; \
- sign = 0 - (val&1); \
- _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
- \
- index1 = index / 6; \
- if (!s->quarter_sample && index1 == 5) val = 1; \
- else val = 0; \
- if (size_table[index1] - val > 0) \
- val = get_bits(gb, size_table[index1] - val); \
- else val = 0; \
- sign = 0 - (val & 1); \
- _dmv_y = (sign ^ ((val >> 1) + offset_table[index1])) - sign; \
- }
-
-static av_always_inline void get_mvdata_interlaced(VC1Context *v, int *dmv_x,
- int *dmv_y, int *pred_flag)
-{
- int index, index1;
- int extend_x = 0, extend_y = 0;
- GetBitContext *gb = &v->s.gb;
- int bits, esc;
- int val, sign;
- const int* offs_tab;
-
- if (v->numref) {
- bits = VC1_2REF_MVDATA_VLC_BITS;
- esc = 125;
- } else {
- bits = VC1_1REF_MVDATA_VLC_BITS;
- esc = 71;
- }
- switch (v->dmvrange) {
- case 1:
- extend_x = 1;
- break;
- case 2:
- extend_y = 1;
- break;
- case 3:
- extend_x = extend_y = 1;
- break;
- }
- index = get_vlc2(gb, v->imv_vlc->table, bits, 3);
- if (index == esc) {
- *dmv_x = get_bits(gb, v->k_x);
- *dmv_y = get_bits(gb, v->k_y);
- if (v->numref) {
- if (pred_flag) {
- *pred_flag = *dmv_y & 1;
- *dmv_y = (*dmv_y + *pred_flag) >> 1;
- } else {
- *dmv_y = (*dmv_y + (*dmv_y & 1)) >> 1;
- }
- }
- }
- else {
- if (extend_x)
- offs_tab = offset_table2;
- else
- offs_tab = offset_table1;
- index1 = (index + 1) % 9;
- if (index1 != 0) {
- val = get_bits(gb, index1 + extend_x);
- sign = 0 -(val & 1);
- *dmv_x = (sign ^ ((val >> 1) + offs_tab[index1])) - sign;
- } else
- *dmv_x = 0;
- if (extend_y)
- offs_tab = offset_table2;
- else
- offs_tab = offset_table1;
- index1 = (index + 1) / 9;
- if (index1 > v->numref) {
- val = get_bits(gb, (index1 + (extend_y << v->numref)) >> v->numref);
- sign = 0 - (val & 1);
- *dmv_y = (sign ^ ((val >> 1) + offs_tab[index1 >> v->numref])) - sign;
- } else
- *dmv_y = 0;
- if (v->numref && pred_flag)
- *pred_flag = index1 & 1;
- }
-}
-
-static av_always_inline int scaleforsame_x(VC1Context *v, int n /* MV */, int dir)
-{
- int scaledvalue, refdist;
- int scalesame1, scalesame2;
- int scalezone1_x, zone1offset_x;
- int table_index = dir ^ v->second_field;
-
- if (v->s.pict_type != AV_PICTURE_TYPE_B)
- refdist = v->refdist;
- else
- refdist = dir ? v->brfd : v->frfd;
- if (refdist > 3)
- refdist = 3;
- scalesame1 = ff_vc1_field_mvpred_scales[table_index][1][refdist];
- scalesame2 = ff_vc1_field_mvpred_scales[table_index][2][refdist];
- scalezone1_x = ff_vc1_field_mvpred_scales[table_index][3][refdist];
- zone1offset_x = ff_vc1_field_mvpred_scales[table_index][5][refdist];
-
- if (FFABS(n) > 255)
- scaledvalue = n;
- else {
- if (FFABS(n) < scalezone1_x)
- scaledvalue = (n * scalesame1) >> 8;
- else {
- if (n < 0)
- scaledvalue = ((n * scalesame2) >> 8) - zone1offset_x;
- else
- scaledvalue = ((n * scalesame2) >> 8) + zone1offset_x;
- }
- }
- return av_clip(scaledvalue, -v->range_x, v->range_x - 1);
-}
-
-static av_always_inline int scaleforsame_y(VC1Context *v, int i, int n /* MV */, int dir)
-{
- int scaledvalue, refdist;
- int scalesame1, scalesame2;
- int scalezone1_y, zone1offset_y;
- int table_index = dir ^ v->second_field;
-
- if (v->s.pict_type != AV_PICTURE_TYPE_B)
- refdist = v->refdist;
- else
- refdist = dir ? v->brfd : v->frfd;
- if (refdist > 3)
- refdist = 3;
- scalesame1 = ff_vc1_field_mvpred_scales[table_index][1][refdist];
- scalesame2 = ff_vc1_field_mvpred_scales[table_index][2][refdist];
- scalezone1_y = ff_vc1_field_mvpred_scales[table_index][4][refdist];
- zone1offset_y = ff_vc1_field_mvpred_scales[table_index][6][refdist];
-
- if (FFABS(n) > 63)
- scaledvalue = n;
- else {
- if (FFABS(n) < scalezone1_y)
- scaledvalue = (n * scalesame1) >> 8;
- else {
- if (n < 0)
- scaledvalue = ((n * scalesame2) >> 8) - zone1offset_y;
- else
- scaledvalue = ((n * scalesame2) >> 8) + zone1offset_y;
- }
- }
-
- if (v->cur_field_type && !v->ref_field_type[dir])
- return av_clip(scaledvalue, -v->range_y / 2 + 1, v->range_y / 2);
- else
- return av_clip(scaledvalue, -v->range_y / 2, v->range_y / 2 - 1);
-}
-
-static av_always_inline int scaleforopp_x(VC1Context *v, int n /* MV */)
-{
- int scalezone1_x, zone1offset_x;
- int scaleopp1, scaleopp2, brfd;
- int scaledvalue;
-
- brfd = FFMIN(v->brfd, 3);
- scalezone1_x = ff_vc1_b_field_mvpred_scales[3][brfd];
- zone1offset_x = ff_vc1_b_field_mvpred_scales[5][brfd];
- scaleopp1 = ff_vc1_b_field_mvpred_scales[1][brfd];
- scaleopp2 = ff_vc1_b_field_mvpred_scales[2][brfd];
-
- if (FFABS(n) > 255)
- scaledvalue = n;
- else {
- if (FFABS(n) < scalezone1_x)
- scaledvalue = (n * scaleopp1) >> 8;
- else {
- if (n < 0)
- scaledvalue = ((n * scaleopp2) >> 8) - zone1offset_x;
- else
- scaledvalue = ((n * scaleopp2) >> 8) + zone1offset_x;
- }
- }
- return av_clip(scaledvalue, -v->range_x, v->range_x - 1);
-}
-
-static av_always_inline int scaleforopp_y(VC1Context *v, int n /* MV */, int dir)
-{
- int scalezone1_y, zone1offset_y;
- int scaleopp1, scaleopp2, brfd;
- int scaledvalue;
-
- brfd = FFMIN(v->brfd, 3);
- scalezone1_y = ff_vc1_b_field_mvpred_scales[4][brfd];
- zone1offset_y = ff_vc1_b_field_mvpred_scales[6][brfd];
- scaleopp1 = ff_vc1_b_field_mvpred_scales[1][brfd];
- scaleopp2 = ff_vc1_b_field_mvpred_scales[2][brfd];
-
- if (FFABS(n) > 63)
- scaledvalue = n;
- else {
- if (FFABS(n) < scalezone1_y)
- scaledvalue = (n * scaleopp1) >> 8;
- else {
- if (n < 0)
- scaledvalue = ((n * scaleopp2) >> 8) - zone1offset_y;
- else
- scaledvalue = ((n * scaleopp2) >> 8) + zone1offset_y;
- }
- }
- if (v->cur_field_type && !v->ref_field_type[dir]) {
- return av_clip(scaledvalue, -v->range_y / 2 + 1, v->range_y / 2);
- } else {
- return av_clip(scaledvalue, -v->range_y / 2, v->range_y / 2 - 1);
- }
-}
-
-static av_always_inline int scaleforsame(VC1Context *v, int i, int n /* MV */,
- int dim, int dir)
-{
- int brfd, scalesame;
- int hpel = 1 - v->s.quarter_sample;
-
- n >>= hpel;
- if (v->s.pict_type != AV_PICTURE_TYPE_B || v->second_field || !dir) {
- if (dim)
- n = scaleforsame_y(v, i, n, dir) << hpel;
- else
- n = scaleforsame_x(v, n, dir) << hpel;
- return n;
- }
- brfd = FFMIN(v->brfd, 3);
- scalesame = ff_vc1_b_field_mvpred_scales[0][brfd];
-
- n = (n * scalesame >> 8) << hpel;
- return n;
-}
-
-static av_always_inline int scaleforopp(VC1Context *v, int n /* MV */,
- int dim, int dir)
-{
- int refdist, scaleopp;
- int hpel = 1 - v->s.quarter_sample;
-
- n >>= hpel;
- if (v->s.pict_type == AV_PICTURE_TYPE_B && !v->second_field && dir == 1) {
- if (dim)
- n = scaleforopp_y(v, n, dir) << hpel;
- else
- n = scaleforopp_x(v, n) << hpel;
- return n;
- }
- if (v->s.pict_type != AV_PICTURE_TYPE_B)
- refdist = FFMIN(v->refdist, 3);
- else
- refdist = dir ? v->brfd : v->frfd;
- scaleopp = ff_vc1_field_mvpred_scales[dir ^ v->second_field][0][refdist];
-
- n = (n * scaleopp >> 8) << hpel;
- return n;
-}
-
-/** Predict and set motion vector
- */
-static inline void vc1_pred_mv(VC1Context *v, int n, int dmv_x, int dmv_y,
- int mv1, int r_x, int r_y, uint8_t* is_intra,
- int pred_flag, int dir)
-{
- MpegEncContext *s = &v->s;
- int xy, wrap, off = 0;
- int16_t *A, *B, *C;
- int px, py;
- int sum;
- int mixedmv_pic, num_samefield = 0, num_oppfield = 0;
- int opposite, a_f, b_f, c_f;
- int16_t field_predA[2];
- int16_t field_predB[2];
- int16_t field_predC[2];
- int a_valid, b_valid, c_valid;
- int hybridmv_thresh, y_bias = 0;
-
- if (v->mv_mode == MV_PMODE_MIXED_MV ||
- ((v->mv_mode == MV_PMODE_INTENSITY_COMP) && (v->mv_mode2 == MV_PMODE_MIXED_MV)))
- mixedmv_pic = 1;
- else
- mixedmv_pic = 0;
- /* scale MV difference to be quad-pel */
- dmv_x <<= 1 - s->quarter_sample;
- dmv_y <<= 1 - s->quarter_sample;
-
- wrap = s->b8_stride;
- xy = s->block_index[n];
-
- if (s->mb_intra) {
- s->mv[0][n][0] = s->current_picture.motion_val[0][xy + v->blocks_off][0] = 0;
- s->mv[0][n][1] = s->current_picture.motion_val[0][xy + v->blocks_off][1] = 0;
- s->current_picture.motion_val[1][xy + v->blocks_off][0] = 0;
- s->current_picture.motion_val[1][xy + v->blocks_off][1] = 0;
- if (mv1) { /* duplicate motion data for 1-MV block */
- s->current_picture.motion_val[0][xy + 1 + v->blocks_off][0] = 0;
- s->current_picture.motion_val[0][xy + 1 + v->blocks_off][1] = 0;
- s->current_picture.motion_val[0][xy + wrap + v->blocks_off][0] = 0;
- s->current_picture.motion_val[0][xy + wrap + v->blocks_off][1] = 0;
- s->current_picture.motion_val[0][xy + wrap + 1 + v->blocks_off][0] = 0;
- s->current_picture.motion_val[0][xy + wrap + 1 + v->blocks_off][1] = 0;
- v->luma_mv[s->mb_x][0] = v->luma_mv[s->mb_x][1] = 0;
- s->current_picture.motion_val[1][xy + 1 + v->blocks_off][0] = 0;
- s->current_picture.motion_val[1][xy + 1 + v->blocks_off][1] = 0;
- s->current_picture.motion_val[1][xy + wrap][0] = 0;
- s->current_picture.motion_val[1][xy + wrap + v->blocks_off][1] = 0;
- s->current_picture.motion_val[1][xy + wrap + 1 + v->blocks_off][0] = 0;
- s->current_picture.motion_val[1][xy + wrap + 1 + v->blocks_off][1] = 0;
- }
- return;
- }
-
- C = s->current_picture.motion_val[dir][xy - 1 + v->blocks_off];
- A = s->current_picture.motion_val[dir][xy - wrap + v->blocks_off];
- if (mv1) {
- if (v->field_mode && mixedmv_pic)
- off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
- else
- off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2;
- } else {
- //in 4-MV mode different blocks have different B predictor position
- switch (n) {
- case 0:
- off = (s->mb_x > 0) ? -1 : 1;
- break;
- case 1:
- off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1;
- break;
- case 2:
- off = 1;
- break;
- case 3:
- off = -1;
- }
- }
- B = s->current_picture.motion_val[dir][xy - wrap + off + v->blocks_off];
-
- a_valid = !s->first_slice_line || (n == 2 || n == 3);
- b_valid = a_valid && (s->mb_width > 1);
- c_valid = s->mb_x || (n == 1 || n == 3);
- if (v->field_mode) {
- a_valid = a_valid && !is_intra[xy - wrap];
- b_valid = b_valid && !is_intra[xy - wrap + off];
- c_valid = c_valid && !is_intra[xy - 1];
- }
-
- if (a_valid) {
- a_f = v->mv_f[dir][xy - wrap + v->blocks_off];
- num_oppfield += a_f;
- num_samefield += 1 - a_f;
- field_predA[0] = A[0];
- field_predA[1] = A[1];
- } else {
- field_predA[0] = field_predA[1] = 0;
- a_f = 0;
- }
- if (b_valid) {
- b_f = v->mv_f[dir][xy - wrap + off + v->blocks_off];
- num_oppfield += b_f;
- num_samefield += 1 - b_f;
- field_predB[0] = B[0];
- field_predB[1] = B[1];
- } else {
- field_predB[0] = field_predB[1] = 0;
- b_f = 0;
- }
- if (c_valid) {
- c_f = v->mv_f[dir][xy - 1 + v->blocks_off];
- num_oppfield += c_f;
- num_samefield += 1 - c_f;
- field_predC[0] = C[0];
- field_predC[1] = C[1];
- } else {
- field_predC[0] = field_predC[1] = 0;
- c_f = 0;
- }
-
- if (v->field_mode) {
- if (!v->numref)
- // REFFIELD determines if the last field or the second-last field is
- // to be used as reference
- opposite = 1 - v->reffield;
- else {
- if (num_samefield <= num_oppfield)
- opposite = 1 - pred_flag;
- else
- opposite = pred_flag;
- }
- } else
- opposite = 0;
- if (opposite) {
- if (a_valid && !a_f) {
- field_predA[0] = scaleforopp(v, field_predA[0], 0, dir);
- field_predA[1] = scaleforopp(v, field_predA[1], 1, dir);
- }
- if (b_valid && !b_f) {
- field_predB[0] = scaleforopp(v, field_predB[0], 0, dir);
- field_predB[1] = scaleforopp(v, field_predB[1], 1, dir);
- }
- if (c_valid && !c_f) {
- field_predC[0] = scaleforopp(v, field_predC[0], 0, dir);
- field_predC[1] = scaleforopp(v, field_predC[1], 1, dir);
- }
- v->mv_f[dir][xy + v->blocks_off] = 1;
- v->ref_field_type[dir] = !v->cur_field_type;
- } else {
- if (a_valid && a_f) {
- field_predA[0] = scaleforsame(v, n, field_predA[0], 0, dir);
- field_predA[1] = scaleforsame(v, n, field_predA[1], 1, dir);
- }
- if (b_valid && b_f) {
- field_predB[0] = scaleforsame(v, n, field_predB[0], 0, dir);
- field_predB[1] = scaleforsame(v, n, field_predB[1], 1, dir);
- }
- if (c_valid && c_f) {
- field_predC[0] = scaleforsame(v, n, field_predC[0], 0, dir);
- field_predC[1] = scaleforsame(v, n, field_predC[1], 1, dir);
- }
- v->mv_f[dir][xy + v->blocks_off] = 0;
- v->ref_field_type[dir] = v->cur_field_type;
- }
-
- if (a_valid) {
- px = field_predA[0];
- py = field_predA[1];
- } else if (c_valid) {
- px = field_predC[0];
- py = field_predC[1];
- } else if (b_valid) {
- px = field_predB[0];
- py = field_predB[1];
- } else {
- px = 0;
- py = 0;
- }
-
- if (num_samefield + num_oppfield > 1) {
- px = mid_pred(field_predA[0], field_predB[0], field_predC[0]);
- py = mid_pred(field_predA[1], field_predB[1], field_predC[1]);
- }
-
- /* Pullback MV as specified in 8.3.5.3.4 */
- if (!v->field_mode) {
- int qx, qy, X, Y;
- qx = (s->mb_x << 6) + ((n == 1 || n == 3) ? 32 : 0);
- qy = (s->mb_y << 6) + ((n == 2 || n == 3) ? 32 : 0);
- X = (s->mb_width << 6) - 4;
- Y = (s->mb_height << 6) - 4;
- if (mv1) {
- if (qx + px < -60) px = -60 - qx;
- if (qy + py < -60) py = -60 - qy;
- } else {
- if (qx + px < -28) px = -28 - qx;
- if (qy + py < -28) py = -28 - qy;
- }
- if (qx + px > X) px = X - qx;
- if (qy + py > Y) py = Y - qy;
- }
-
- if (!v->field_mode || s->pict_type != AV_PICTURE_TYPE_B) {
- /* Calculate hybrid prediction as specified in 8.3.5.3.5 (also 10.3.5.4.3.5) */
- hybridmv_thresh = 32;
- if (a_valid && c_valid) {
- if (is_intra[xy - wrap])
- sum = FFABS(px) + FFABS(py);
- else
- sum = FFABS(px - field_predA[0]) + FFABS(py - field_predA[1]);
- if (sum > hybridmv_thresh) {
- if (get_bits1(&s->gb)) { // read HYBRIDPRED bit
- px = field_predA[0];
- py = field_predA[1];
- } else {
- px = field_predC[0];
- py = field_predC[1];
- }
- } else {
- if (is_intra[xy - 1])
- sum = FFABS(px) + FFABS(py);
- else
- sum = FFABS(px - field_predC[0]) + FFABS(py - field_predC[1]);
- if (sum > hybridmv_thresh) {
- if (get_bits1(&s->gb)) {
- px = field_predA[0];
- py = field_predA[1];
- } else {
- px = field_predC[0];
- py = field_predC[1];
- }
- }
- }
- }
- }
-
- if (v->field_mode && v->numref)
- r_y >>= 1;
- if (v->field_mode && v->cur_field_type && v->ref_field_type[dir] == 0)
- y_bias = 1;
- /* store MV using signed modulus of MV range defined in 4.11 */
- s->mv[dir][n][0] = s->current_picture.motion_val[dir][xy + v->blocks_off][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
- s->mv[dir][n][1] = s->current_picture.motion_val[dir][xy + v->blocks_off][1] = ((py + dmv_y + r_y - y_bias) & ((r_y << 1) - 1)) - r_y + y_bias;
- if (mv1) { /* duplicate motion data for 1-MV block */
- s->current_picture.motion_val[dir][xy + 1 + v->blocks_off][0] = s->current_picture.motion_val[dir][xy + v->blocks_off][0];
- s->current_picture.motion_val[dir][xy + 1 + v->blocks_off][1] = s->current_picture.motion_val[dir][xy + v->blocks_off][1];
- s->current_picture.motion_val[dir][xy + wrap + v->blocks_off][0] = s->current_picture.motion_val[dir][xy + v->blocks_off][0];
- s->current_picture.motion_val[dir][xy + wrap + v->blocks_off][1] = s->current_picture.motion_val[dir][xy + v->blocks_off][1];
- s->current_picture.motion_val[dir][xy + wrap + 1 + v->blocks_off][0] = s->current_picture.motion_val[dir][xy + v->blocks_off][0];
- s->current_picture.motion_val[dir][xy + wrap + 1 + v->blocks_off][1] = s->current_picture.motion_val[dir][xy + v->blocks_off][1];
- v->mv_f[dir][xy + 1 + v->blocks_off] = v->mv_f[dir][xy + v->blocks_off];
- v->mv_f[dir][xy + wrap + v->blocks_off] = v->mv_f[dir][xy + wrap + 1 + v->blocks_off] = v->mv_f[dir][xy + v->blocks_off];
- }
-}
-
-/** Predict and set motion vector for interlaced frame picture MBs
- */
-static inline void vc1_pred_mv_intfr(VC1Context *v, int n, int dmv_x, int dmv_y,
- int mvn, int r_x, int r_y, uint8_t* is_intra, int dir)
-{
- MpegEncContext *s = &v->s;
- int xy, wrap, off = 0;
- int A[2], B[2], C[2];
- int px, py;
- int a_valid = 0, b_valid = 0, c_valid = 0;
- int field_a, field_b, field_c; // 0: same, 1: opposit
- int total_valid, num_samefield, num_oppfield;
- int pos_c, pos_b, n_adj;
-
- wrap = s->b8_stride;
- xy = s->block_index[n];
-
- if (s->mb_intra) {
- s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
- s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
- s->current_picture.motion_val[1][xy][0] = 0;
- s->current_picture.motion_val[1][xy][1] = 0;
- if (mvn == 1) { /* duplicate motion data for 1-MV block */
- s->current_picture.motion_val[0][xy + 1][0] = 0;
- s->current_picture.motion_val[0][xy + 1][1] = 0;
- s->current_picture.motion_val[0][xy + wrap][0] = 0;
- s->current_picture.motion_val[0][xy + wrap][1] = 0;
- s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
- s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
- v->luma_mv[s->mb_x][0] = v->luma_mv[s->mb_x][1] = 0;
- s->current_picture.motion_val[1][xy + 1][0] = 0;
- s->current_picture.motion_val[1][xy + 1][1] = 0;
- s->current_picture.motion_val[1][xy + wrap][0] = 0;
- s->current_picture.motion_val[1][xy + wrap][1] = 0;
- s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
- s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
- }
- return;
- }
-
- off = ((n == 0) || (n == 1)) ? 1 : -1;
- /* predict A */
- if (s->mb_x || (n == 1) || (n == 3)) {
- if ((v->blk_mv_type[xy]) // current block (MB) has a field MV
- || (!v->blk_mv_type[xy] && !v->blk_mv_type[xy - 1])) { // or both have frame MV
- A[0] = s->current_picture.motion_val[dir][xy - 1][0];
- A[1] = s->current_picture.motion_val[dir][xy - 1][1];
- a_valid = 1;
- } else { // current block has frame mv and cand. has field MV (so average)
- A[0] = (s->current_picture.motion_val[dir][xy - 1][0]
- + s->current_picture.motion_val[dir][xy - 1 + off * wrap][0] + 1) >> 1;
- A[1] = (s->current_picture.motion_val[dir][xy - 1][1]
- + s->current_picture.motion_val[dir][xy - 1 + off * wrap][1] + 1) >> 1;
- a_valid = 1;
- }
- if (!(n & 1) && v->is_intra[s->mb_x - 1]) {
- a_valid = 0;
- A[0] = A[1] = 0;
- }
- } else
- A[0] = A[1] = 0;
- /* Predict B and C */
- B[0] = B[1] = C[0] = C[1] = 0;
- if (n == 0 || n == 1 || v->blk_mv_type[xy]) {
- if (!s->first_slice_line) {
- if (!v->is_intra[s->mb_x - s->mb_stride]) {
- b_valid = 1;
- n_adj = n | 2;
- pos_b = s->block_index[n_adj] - 2 * wrap;
- if (v->blk_mv_type[pos_b] && v->blk_mv_type[xy]) {
- n_adj = (n & 2) | (n & 1);
- }
- B[0] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap][0];
- B[1] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap][1];
- if (v->blk_mv_type[pos_b] && !v->blk_mv_type[xy]) {
- B[0] = (B[0] + s->current_picture.motion_val[dir][s->block_index[n_adj ^ 2] - 2 * wrap][0] + 1) >> 1;
- B[1] = (B[1] + s->current_picture.motion_val[dir][s->block_index[n_adj ^ 2] - 2 * wrap][1] + 1) >> 1;
- }
- }
- if (s->mb_width > 1) {
- if (!v->is_intra[s->mb_x - s->mb_stride + 1]) {
- c_valid = 1;
- n_adj = 2;
- pos_c = s->block_index[2] - 2 * wrap + 2;
- if (v->blk_mv_type[pos_c] && v->blk_mv_type[xy]) {
- n_adj = n & 2;
- }
- C[0] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap + 2][0];
- C[1] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap + 2][1];
- if (v->blk_mv_type[pos_c] && !v->blk_mv_type[xy]) {
- C[0] = (1 + C[0] + (s->current_picture.motion_val[dir][s->block_index[n_adj ^ 2] - 2 * wrap + 2][0])) >> 1;
- C[1] = (1 + C[1] + (s->current_picture.motion_val[dir][s->block_index[n_adj ^ 2] - 2 * wrap + 2][1])) >> 1;
- }
- if (s->mb_x == s->mb_width - 1) {
- if (!v->is_intra[s->mb_x - s->mb_stride - 1]) {
- c_valid = 1;
- n_adj = 3;
- pos_c = s->block_index[3] - 2 * wrap - 2;
- if (v->blk_mv_type[pos_c] && v->blk_mv_type[xy]) {
- n_adj = n | 1;
- }
- C[0] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap - 2][0];
- C[1] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap - 2][1];
- if (v->blk_mv_type[pos_c] && !v->blk_mv_type[xy]) {
- C[0] = (1 + C[0] + s->current_picture.motion_val[dir][s->block_index[1] - 2 * wrap - 2][0]) >> 1;
- C[1] = (1 + C[1] + s->current_picture.motion_val[dir][s->block_index[1] - 2 * wrap - 2][1]) >> 1;
- }
- } else
- c_valid = 0;
- }
- }
- }
- }
- } else {
- pos_b = s->block_index[1];
- b_valid = 1;
- B[0] = s->current_picture.motion_val[dir][pos_b][0];
- B[1] = s->current_picture.motion_val[dir][pos_b][1];
- pos_c = s->block_index[0];
- c_valid = 1;
- C[0] = s->current_picture.motion_val[dir][pos_c][0];
- C[1] = s->current_picture.motion_val[dir][pos_c][1];
- }
-
- total_valid = a_valid + b_valid + c_valid;
- // check if predictor A is out of bounds
- if (!s->mb_x && !(n == 1 || n == 3)) {
- A[0] = A[1] = 0;
- }
- // check if predictor B is out of bounds
- if ((s->first_slice_line && v->blk_mv_type[xy]) || (s->first_slice_line && !(n & 2))) {
- B[0] = B[1] = C[0] = C[1] = 0;
- }
- if (!v->blk_mv_type[xy]) {
- if (s->mb_width == 1) {
- px = B[0];
- py = B[1];
- } else {
- if (total_valid >= 2) {
- px = mid_pred(A[0], B[0], C[0]);
- py = mid_pred(A[1], B[1], C[1]);
- } else if (total_valid) {
- if (a_valid) { px = A[0]; py = A[1]; }
- if (b_valid) { px = B[0]; py = B[1]; }
- if (c_valid) { px = C[0]; py = C[1]; }
- } else
- px = py = 0;
- }
- } else {
- if (a_valid)
- field_a = (A[1] & 4) ? 1 : 0;
- else
- field_a = 0;
- if (b_valid)
- field_b = (B[1] & 4) ? 1 : 0;
- else
- field_b = 0;
- if (c_valid)
- field_c = (C[1] & 4) ? 1 : 0;
- else
- field_c = 0;
-
- num_oppfield = field_a + field_b + field_c;
- num_samefield = total_valid - num_oppfield;
- if (total_valid == 3) {
- if ((num_samefield == 3) || (num_oppfield == 3)) {
- px = mid_pred(A[0], B[0], C[0]);
- py = mid_pred(A[1], B[1], C[1]);
- } else if (num_samefield >= num_oppfield) {
- /* take one MV from same field set depending on priority
- the check for B may not be necessary */
- px = !field_a ? A[0] : B[0];
- py = !field_a ? A[1] : B[1];
- } else {
- px = field_a ? A[0] : B[0];
- py = field_a ? A[1] : B[1];
- }
- } else if (total_valid == 2) {
- if (num_samefield >= num_oppfield) {
- if (!field_a && a_valid) {
- px = A[0];
- py = A[1];
- } else if (!field_b && b_valid) {
- px = B[0];
- py = B[1];
- } else if (c_valid) {
- px = C[0];
- py = C[1];
- } else px = py = 0;
- } else {
- if (field_a && a_valid) {
- px = A[0];
- py = A[1];
- } else if (field_b && b_valid) {
- px = B[0];
- py = B[1];
- } else if (c_valid) {
- px = C[0];
- py = C[1];
- } else
- px = py = 0;
- }
- } else if (total_valid == 1) {
- px = (a_valid) ? A[0] : ((b_valid) ? B[0] : C[0]);
- py = (a_valid) ? A[1] : ((b_valid) ? B[1] : C[1]);
- } else
- px = py = 0;
- }
-
- /* store MV using signed modulus of MV range defined in 4.11 */
- s->mv[dir][n][0] = s->current_picture.motion_val[dir][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
- s->mv[dir][n][1] = s->current_picture.motion_val[dir][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
- if (mvn == 1) { /* duplicate motion data for 1-MV block */
- s->current_picture.motion_val[dir][xy + 1 ][0] = s->current_picture.motion_val[dir][xy][0];
- s->current_picture.motion_val[dir][xy + 1 ][1] = s->current_picture.motion_val[dir][xy][1];
- s->current_picture.motion_val[dir][xy + wrap ][0] = s->current_picture.motion_val[dir][xy][0];
- s->current_picture.motion_val[dir][xy + wrap ][1] = s->current_picture.motion_val[dir][xy][1];
- s->current_picture.motion_val[dir][xy + wrap + 1][0] = s->current_picture.motion_val[dir][xy][0];
- s->current_picture.motion_val[dir][xy + wrap + 1][1] = s->current_picture.motion_val[dir][xy][1];
- } else if (mvn == 2) { /* duplicate motion data for 2-Field MV block */
- s->current_picture.motion_val[dir][xy + 1][0] = s->current_picture.motion_val[dir][xy][0];
- s->current_picture.motion_val[dir][xy + 1][1] = s->current_picture.motion_val[dir][xy][1];
- s->mv[dir][n + 1][0] = s->mv[dir][n][0];
- s->mv[dir][n + 1][1] = s->mv[dir][n][1];
- }
-}
-
-/** Motion compensation for direct or interpolated blocks in B-frames
- */
-static void vc1_interp_mc(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
- H264ChromaContext *h264chroma = &v->h264chroma;
- uint8_t *srcY, *srcU, *srcV;
- int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
- int off, off_uv;
- int v_edge_pos = s->v_edge_pos >> v->field_mode;
- int use_ic = v->next_use_ic;
-
- if (!v->field_mode && !v->s.next_picture.f->data[0])
- return;
-
- mx = s->mv[1][0][0];
- my = s->mv[1][0][1];
- uvmx = (mx + ((mx & 3) == 3)) >> 1;
- uvmy = (my + ((my & 3) == 3)) >> 1;
- if (v->field_mode) {
- if (v->cur_field_type != v->ref_field_type[1])
- my = my - 2 + 4 * v->cur_field_type;
- uvmy = uvmy - 2 + 4 * v->cur_field_type;
- }
- if (v->fastuvmc) {
- uvmx = uvmx + ((uvmx < 0) ? -(uvmx & 1) : (uvmx & 1));
- uvmy = uvmy + ((uvmy < 0) ? -(uvmy & 1) : (uvmy & 1));
- }
- srcY = s->next_picture.f->data[0];
- srcU = s->next_picture.f->data[1];
- srcV = s->next_picture.f->data[2];
-
- src_x = s->mb_x * 16 + (mx >> 2);
- src_y = s->mb_y * 16 + (my >> 2);
- uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
- uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
-
- if (v->profile != PROFILE_ADVANCED) {
- src_x = av_clip( src_x, -16, s->mb_width * 16);
- src_y = av_clip( src_y, -16, s->mb_height * 16);
- uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
- uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
- } else {
- src_x = av_clip( src_x, -17, s->avctx->coded_width);
- src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
- uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
- uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
- }
-
- srcY += src_y * s->linesize + src_x;
- srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
- srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
-
- if (v->field_mode && v->ref_field_type[1]) {
- srcY += s->current_picture_ptr->f->linesize[0];
- srcU += s->current_picture_ptr->f->linesize[1];
- srcV += s->current_picture_ptr->f->linesize[2];
- }
-
- /* for grayscale we should not try to read from unknown area */
- if (s->flags & CODEC_FLAG_GRAY) {
- srcU = s->edge_emu_buffer + 18 * s->linesize;
- srcV = s->edge_emu_buffer + 18 * s->linesize;
- }
-
- if (v->rangeredfrm || s->h_edge_pos < 22 || v_edge_pos < 22 || use_ic
- || (unsigned)(src_x - 1) > s->h_edge_pos - (mx & 3) - 16 - 3
- || (unsigned)(src_y - 1) > v_edge_pos - (my & 3) - 16 - 3) {
- uint8_t *uvbuf = s->edge_emu_buffer + 19 * s->linesize;
-
- srcY -= s->mspel * (1 + s->linesize);
- s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
- s->linesize, s->linesize,
- 17 + s->mspel * 2, 17 + s->mspel * 2,
- src_x - s->mspel, src_y - s->mspel,
- s->h_edge_pos, v_edge_pos);
- srcY = s->edge_emu_buffer;
- s->vdsp.emulated_edge_mc(uvbuf, srcU,
- s->uvlinesize, s->uvlinesize,
- 8 + 1, 8 + 1,
- uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, v_edge_pos >> 1);
- s->vdsp.emulated_edge_mc(uvbuf + 16, srcV,
- s->uvlinesize, s->uvlinesize,
- 8 + 1, 8 + 1,
- uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, v_edge_pos >> 1);
- srcU = uvbuf;
- srcV = uvbuf + 16;
- /* if we deal with range reduction we need to scale source blocks */
- if (v->rangeredfrm) {
- int i, j;
- uint8_t *src, *src2;
-
- src = srcY;
- for (j = 0; j < 17 + s->mspel * 2; j++) {
- for (i = 0; i < 17 + s->mspel * 2; i++)
- src[i] = ((src[i] - 128) >> 1) + 128;
- src += s->linesize;
- }
- src = srcU;
- src2 = srcV;
- for (j = 0; j < 9; j++) {
- for (i = 0; i < 9; i++) {
- src[i] = ((src[i] - 128) >> 1) + 128;
- src2[i] = ((src2[i] - 128) >> 1) + 128;
- }
- src += s->uvlinesize;
- src2 += s->uvlinesize;
- }
- }
-
- if (use_ic) {
- uint8_t (*luty )[256] = v->next_luty;
- uint8_t (*lutuv)[256] = v->next_lutuv;
- int i, j;
- uint8_t *src, *src2;
-
- src = srcY;
- for (j = 0; j < 17 + s->mspel * 2; j++) {
- int f = v->field_mode ? v->ref_field_type[1] : ((j+src_y - s->mspel) & 1);
- for (i = 0; i < 17 + s->mspel * 2; i++)
- src[i] = luty[f][src[i]];
- src += s->linesize;
- }
- src = srcU;
- src2 = srcV;
- for (j = 0; j < 9; j++) {
- int f = v->field_mode ? v->ref_field_type[1] : ((j+uvsrc_y) & 1);
- for (i = 0; i < 9; i++) {
- src[i] = lutuv[f][src[i]];
- src2[i] = lutuv[f][src2[i]];
- }
- src += s->uvlinesize;
- src2 += s->uvlinesize;
- }
- }
- srcY += s->mspel * (1 + s->linesize);
- }
-
- off = 0;
- off_uv = 0;
-
- if (s->mspel) {
- dxy = ((my & 3) << 2) | (mx & 3);
- v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + off , srcY , s->linesize, v->rnd);
- v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + off + 8, srcY + 8, s->linesize, v->rnd);
- srcY += s->linesize * 8;
- v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + off + 8 * s->linesize , srcY , s->linesize, v->rnd);
- v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + off + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
- } else { // hpel mc
- dxy = (my & 2) | ((mx & 2) >> 1);
-
- if (!v->rnd)
- s->hdsp.avg_pixels_tab[0][dxy](s->dest[0] + off, srcY, s->linesize, 16);
- else
- s->hdsp.avg_no_rnd_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize, 16);
- }
-
- if (s->flags & CODEC_FLAG_GRAY) return;
- /* Chroma MC always uses qpel blilinear */
- uvmx = (uvmx & 3) << 1;
- uvmy = (uvmy & 3) << 1;
- if (!v->rnd) {
- h264chroma->avg_h264_chroma_pixels_tab[0](s->dest[1] + off_uv, srcU, s->uvlinesize, 8, uvmx, uvmy);
- h264chroma->avg_h264_chroma_pixels_tab[0](s->dest[2] + off_uv, srcV, s->uvlinesize, 8, uvmx, uvmy);
- } else {
- v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1] + off_uv, srcU, s->uvlinesize, 8, uvmx, uvmy);
- v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2] + off_uv, srcV, s->uvlinesize, 8, uvmx, uvmy);
- }
-}
-
-static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
-{
- int n = bfrac;
-
-#if B_FRACTION_DEN==256
- if (inv)
- n -= 256;
- if (!qs)
- return 2 * ((value * n + 255) >> 9);
- return (value * n + 128) >> 8;
-#else
- if (inv)
- n -= B_FRACTION_DEN;
- if (!qs)
- return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
- return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
-#endif
-}
-
-/** Reconstruct motion vector for B-frame and do motion compensation
- */
-static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2],
- int direct, int mode)
-{
- if (direct) {
- vc1_mc_1mv(v, 0);
- vc1_interp_mc(v);
- return;
- }
- if (mode == BMV_TYPE_INTERPOLATED) {
- vc1_mc_1mv(v, 0);
- vc1_interp_mc(v);
- return;
- }
-
- vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
-}
-
-static inline void vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2],
- int direct, int mvtype)
-{
- MpegEncContext *s = &v->s;
- int xy, wrap, off = 0;
- int16_t *A, *B, *C;
- int px, py;
- int sum;
- int r_x, r_y;
- const uint8_t *is_intra = v->mb_type[0];
-
- r_x = v->range_x;
- r_y = v->range_y;
- /* scale MV difference to be quad-pel */
- dmv_x[0] <<= 1 - s->quarter_sample;
- dmv_y[0] <<= 1 - s->quarter_sample;
- dmv_x[1] <<= 1 - s->quarter_sample;
- dmv_y[1] <<= 1 - s->quarter_sample;
-
- wrap = s->b8_stride;
- xy = s->block_index[0];
-
- if (s->mb_intra) {
- s->current_picture.motion_val[0][xy + v->blocks_off][0] =
- s->current_picture.motion_val[0][xy + v->blocks_off][1] =
- s->current_picture.motion_val[1][xy + v->blocks_off][0] =
- s->current_picture.motion_val[1][xy + v->blocks_off][1] = 0;
- return;
- }
- if (!v->field_mode) {
- s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample);
- s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample);
- s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample);
- s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample);
-
- /* Pullback predicted motion vectors as specified in 8.4.5.4 */
- s->mv[0][0][0] = av_clip(s->mv[0][0][0], -60 - (s->mb_x << 6), (s->mb_width << 6) - 4 - (s->mb_x << 6));
- s->mv[0][0][1] = av_clip(s->mv[0][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6));
- s->mv[1][0][0] = av_clip(s->mv[1][0][0], -60 - (s->mb_x << 6), (s->mb_width << 6) - 4 - (s->mb_x << 6));
- s->mv[1][0][1] = av_clip(s->mv[1][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6));
- }
- if (direct) {
- s->current_picture.motion_val[0][xy + v->blocks_off][0] = s->mv[0][0][0];
- s->current_picture.motion_val[0][xy + v->blocks_off][1] = s->mv[0][0][1];
- s->current_picture.motion_val[1][xy + v->blocks_off][0] = s->mv[1][0][0];
- s->current_picture.motion_val[1][xy + v->blocks_off][1] = s->mv[1][0][1];
- return;
- }
-
- if ((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
- C = s->current_picture.motion_val[0][xy - 2];
- A = s->current_picture.motion_val[0][xy - wrap * 2];
- off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
- B = s->current_picture.motion_val[0][xy - wrap * 2 + off];
-
- if (!s->mb_x) C[0] = C[1] = 0;
- if (!s->first_slice_line) { // predictor A is not out of bounds
- if (s->mb_width == 1) {
- px = A[0];
- py = A[1];
- } else {
- px = mid_pred(A[0], B[0], C[0]);
- py = mid_pred(A[1], B[1], C[1]);
- }
- } else if (s->mb_x) { // predictor C is not out of bounds
- px = C[0];
- py = C[1];
- } else {
- px = py = 0;
- }
- /* Pullback MV as specified in 8.3.5.3.4 */
- {
- int qx, qy, X, Y;
- if (v->profile < PROFILE_ADVANCED) {
- qx = (s->mb_x << 5);
- qy = (s->mb_y << 5);
- X = (s->mb_width << 5) - 4;
- Y = (s->mb_height << 5) - 4;
- if (qx + px < -28) px = -28 - qx;
- if (qy + py < -28) py = -28 - qy;
- if (qx + px > X) px = X - qx;
- if (qy + py > Y) py = Y - qy;
- } else {
- qx = (s->mb_x << 6);
- qy = (s->mb_y << 6);
- X = (s->mb_width << 6) - 4;
- Y = (s->mb_height << 6) - 4;
- if (qx + px < -60) px = -60 - qx;
- if (qy + py < -60) py = -60 - qy;
- if (qx + px > X) px = X - qx;
- if (qy + py > Y) py = Y - qy;
- }
- }
- /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
- if (0 && !s->first_slice_line && s->mb_x) {
- if (is_intra[xy - wrap])
- sum = FFABS(px) + FFABS(py);
- else
- sum = FFABS(px - A[0]) + FFABS(py - A[1]);
- if (sum > 32) {
- if (get_bits1(&s->gb)) {
- px = A[0];
- py = A[1];
- } else {
- px = C[0];
- py = C[1];
- }
- } else {
- if (is_intra[xy - 2])
- sum = FFABS(px) + FFABS(py);
- else
- sum = FFABS(px - C[0]) + FFABS(py - C[1]);
- if (sum > 32) {
- if (get_bits1(&s->gb)) {
- px = A[0];
- py = A[1];
- } else {
- px = C[0];
- py = C[1];
- }
- }
- }
- }
- /* store MV using signed modulus of MV range defined in 4.11 */
- s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x;
- s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y;
- }
- if ((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
- C = s->current_picture.motion_val[1][xy - 2];
- A = s->current_picture.motion_val[1][xy - wrap * 2];
- off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
- B = s->current_picture.motion_val[1][xy - wrap * 2 + off];
-
- if (!s->mb_x)
- C[0] = C[1] = 0;
- if (!s->first_slice_line) { // predictor A is not out of bounds
- if (s->mb_width == 1) {
- px = A[0];
- py = A[1];
- } else {
- px = mid_pred(A[0], B[0], C[0]);
- py = mid_pred(A[1], B[1], C[1]);
- }
- } else if (s->mb_x) { // predictor C is not out of bounds
- px = C[0];
- py = C[1];
- } else {
- px = py = 0;
- }
- /* Pullback MV as specified in 8.3.5.3.4 */
- {
- int qx, qy, X, Y;
- if (v->profile < PROFILE_ADVANCED) {
- qx = (s->mb_x << 5);
- qy = (s->mb_y << 5);
- X = (s->mb_width << 5) - 4;
- Y = (s->mb_height << 5) - 4;
- if (qx + px < -28) px = -28 - qx;
- if (qy + py < -28) py = -28 - qy;
- if (qx + px > X) px = X - qx;
- if (qy + py > Y) py = Y - qy;
- } else {
- qx = (s->mb_x << 6);
- qy = (s->mb_y << 6);
- X = (s->mb_width << 6) - 4;
- Y = (s->mb_height << 6) - 4;
- if (qx + px < -60) px = -60 - qx;
- if (qy + py < -60) py = -60 - qy;
- if (qx + px > X) px = X - qx;
- if (qy + py > Y) py = Y - qy;
- }
- }
- /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
- if (0 && !s->first_slice_line && s->mb_x) {
- if (is_intra[xy - wrap])
- sum = FFABS(px) + FFABS(py);
- else
- sum = FFABS(px - A[0]) + FFABS(py - A[1]);
- if (sum > 32) {
- if (get_bits1(&s->gb)) {
- px = A[0];
- py = A[1];
- } else {
- px = C[0];
- py = C[1];
- }
- } else {
- if (is_intra[xy - 2])
- sum = FFABS(px) + FFABS(py);
- else
- sum = FFABS(px - C[0]) + FFABS(py - C[1]);
- if (sum > 32) {
- if (get_bits1(&s->gb)) {
- px = A[0];
- py = A[1];
- } else {
- px = C[0];
- py = C[1];
- }
- }
- }
- }
- /* store MV using signed modulus of MV range defined in 4.11 */
-
- s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x;
- s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y;
- }
- s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
- s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
- s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
- s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
-}
-
-static inline void vc1_pred_b_mv_intfi(VC1Context *v, int n, int *dmv_x, int *dmv_y, int mv1, int *pred_flag)
-{
- int dir = (v->bmvtype == BMV_TYPE_BACKWARD) ? 1 : 0;
- MpegEncContext *s = &v->s;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
-
- if (v->bmvtype == BMV_TYPE_DIRECT) {
- int total_opp, k, f;
- if (s->next_picture.mb_type[mb_pos + v->mb_off] != MB_TYPE_INTRA) {
- s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[0] + v->blocks_off][0],
- v->bfraction, 0, s->quarter_sample);
- s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[0] + v->blocks_off][1],
- v->bfraction, 0, s->quarter_sample);
- s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[0] + v->blocks_off][0],
- v->bfraction, 1, s->quarter_sample);
- s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[0] + v->blocks_off][1],
- v->bfraction, 1, s->quarter_sample);
-
- total_opp = v->mv_f_next[0][s->block_index[0] + v->blocks_off]
- + v->mv_f_next[0][s->block_index[1] + v->blocks_off]
- + v->mv_f_next[0][s->block_index[2] + v->blocks_off]
- + v->mv_f_next[0][s->block_index[3] + v->blocks_off];
- f = (total_opp > 2) ? 1 : 0;
- } else {
- s->mv[0][0][0] = s->mv[0][0][1] = 0;
- s->mv[1][0][0] = s->mv[1][0][1] = 0;
- f = 0;
- }
- v->ref_field_type[0] = v->ref_field_type[1] = v->cur_field_type ^ f;
- for (k = 0; k < 4; k++) {
- s->current_picture.motion_val[0][s->block_index[k] + v->blocks_off][0] = s->mv[0][0][0];
- s->current_picture.motion_val[0][s->block_index[k] + v->blocks_off][1] = s->mv[0][0][1];
- s->current_picture.motion_val[1][s->block_index[k] + v->blocks_off][0] = s->mv[1][0][0];
- s->current_picture.motion_val[1][s->block_index[k] + v->blocks_off][1] = s->mv[1][0][1];
- v->mv_f[0][s->block_index[k] + v->blocks_off] = f;
- v->mv_f[1][s->block_index[k] + v->blocks_off] = f;
- }
- return;
- }
- if (v->bmvtype == BMV_TYPE_INTERPOLATED) {
- vc1_pred_mv(v, 0, dmv_x[0], dmv_y[0], 1, v->range_x, v->range_y, v->mb_type[0], pred_flag[0], 0);
- vc1_pred_mv(v, 0, dmv_x[1], dmv_y[1], 1, v->range_x, v->range_y, v->mb_type[0], pred_flag[1], 1);
- return;
- }
- if (dir) { // backward
- vc1_pred_mv(v, n, dmv_x[1], dmv_y[1], mv1, v->range_x, v->range_y, v->mb_type[0], pred_flag[1], 1);
- if (n == 3 || mv1) {
- vc1_pred_mv(v, 0, dmv_x[0], dmv_y[0], 1, v->range_x, v->range_y, v->mb_type[0], 0, 0);
- }
- } else { // forward
- vc1_pred_mv(v, n, dmv_x[0], dmv_y[0], mv1, v->range_x, v->range_y, v->mb_type[0], pred_flag[0], 0);
- if (n == 3 || mv1) {
- vc1_pred_mv(v, 0, dmv_x[1], dmv_y[1], 1, v->range_x, v->range_y, v->mb_type[0], 0, 1);
- }
- }
-}
-
-/** Get predicted DC value for I-frames only
- * prediction dir: left=0, top=1
- * @param s MpegEncContext
- * @param overlap flag indicating that overlap filtering is used
- * @param pq integer part of picture quantizer
- * @param[in] n block index in the current MB
- * @param dc_val_ptr Pointer to DC predictor
- * @param dir_ptr Prediction direction for use in AC prediction
- */
-static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
- int16_t **dc_val_ptr, int *dir_ptr)
-{
- int a, b, c, wrap, pred, scale;
- int16_t *dc_val;
- static const uint16_t dcpred[32] = {
- -1, 1024, 512, 341, 256, 205, 171, 146, 128,
- 114, 102, 93, 85, 79, 73, 68, 64,
- 60, 57, 54, 51, 49, 47, 45, 43,
- 41, 39, 38, 37, 35, 34, 33
- };
-
- /* find prediction - wmv3_dc_scale always used here in fact */
- if (n < 4) scale = s->y_dc_scale;
- else scale = s->c_dc_scale;
-
- wrap = s->block_wrap[n];
- dc_val = s->dc_val[0] + s->block_index[n];
-
- /* B A
- * C X
- */
- c = dc_val[ - 1];
- b = dc_val[ - 1 - wrap];
- a = dc_val[ - wrap];
-
- if (pq < 9 || !overlap) {
- /* Set outer values */
- if (s->first_slice_line && (n != 2 && n != 3))
- b = a = dcpred[scale];
- if (s->mb_x == 0 && (n != 1 && n != 3))
- b = c = dcpred[scale];
- } else {
- /* Set outer values */
- if (s->first_slice_line && (n != 2 && n != 3))
- b = a = 0;
- if (s->mb_x == 0 && (n != 1 && n != 3))
- b = c = 0;
- }
-
- if (abs(a - b) <= abs(b - c)) {
- pred = c;
- *dir_ptr = 1; // left
- } else {
- pred = a;
- *dir_ptr = 0; // top
- }
-
- /* update predictor */
- *dc_val_ptr = &dc_val[0];
- return pred;
-}
-
-
-/** Get predicted DC value
- * prediction dir: left=0, top=1
- * @param s MpegEncContext
- * @param overlap flag indicating that overlap filtering is used
- * @param pq integer part of picture quantizer
- * @param[in] n block index in the current MB
- * @param a_avail flag indicating top block availability
- * @param c_avail flag indicating left block availability
- * @param dc_val_ptr Pointer to DC predictor
- * @param dir_ptr Prediction direction for use in AC prediction
- */
-static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
- int a_avail, int c_avail,
- int16_t **dc_val_ptr, int *dir_ptr)
-{
- int a, b, c, wrap, pred;
- int16_t *dc_val;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- int q1, q2 = 0;
- int dqscale_index;
-
- wrap = s->block_wrap[n];
- dc_val = s->dc_val[0] + s->block_index[n];
-
- /* B A
- * C X
- */
- c = dc_val[ - 1];
- b = dc_val[ - 1 - wrap];
- a = dc_val[ - wrap];
- /* scale predictors if needed */
- q1 = s->current_picture.qscale_table[mb_pos];
- dqscale_index = s->y_dc_scale_table[q1] - 1;
- if (dqscale_index < 0)
- return 0;
- if (c_avail && (n != 1 && n != 3)) {
- q2 = s->current_picture.qscale_table[mb_pos - 1];
- if (q2 && q2 != q1)
- c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18;
- }
- if (a_avail && (n != 2 && n != 3)) {
- q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
- if (q2 && q2 != q1)
- a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18;
- }
- if (a_avail && c_avail && (n != 3)) {
- int off = mb_pos;
- if (n != 1)
- off--;
- if (n != 2)
- off -= s->mb_stride;
- q2 = s->current_picture.qscale_table[off];
- if (q2 && q2 != q1)
- b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18;
- }
-
- if (a_avail && c_avail) {
- if (abs(a - b) <= abs(b - c)) {
- pred = c;
- *dir_ptr = 1; // left
- } else {
- pred = a;
- *dir_ptr = 0; // top
- }
- } else if (a_avail) {
- pred = a;
- *dir_ptr = 0; // top
- } else if (c_avail) {
- pred = c;
- *dir_ptr = 1; // left
- } else {
- pred = 0;
- *dir_ptr = 1; // left
- }
-
- /* update predictor */
- *dc_val_ptr = &dc_val[0];
- return pred;
-}
-
-/** @} */ // Block group
-
-/**
- * @name VC1 Macroblock-level functions in Simple/Main Profiles
- * @see 7.1.4, p91 and 8.1.1.7, p(1)04
- * @{
- */
-
-static inline int vc1_coded_block_pred(MpegEncContext * s, int n,
- uint8_t **coded_block_ptr)
-{
- int xy, wrap, pred, a, b, c;
-
- xy = s->block_index[n];
- wrap = s->b8_stride;
-
- /* B C
- * A X
- */
- a = s->coded_block[xy - 1 ];
- b = s->coded_block[xy - 1 - wrap];
- c = s->coded_block[xy - wrap];
-
- if (b == c) {
- pred = a;
- } else {
- pred = c;
- }
-
- /* store value */
- *coded_block_ptr = &s->coded_block[xy];
-
- return pred;
-}
-
-/**
- * Decode one AC coefficient
- * @param v The VC1 context
- * @param last Last coefficient
- * @param skip How much zero coefficients to skip
- * @param value Decoded AC coefficient value
- * @param codingset set of VLC to decode data
- * @see 8.1.3.4
- */
-static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip,
- int *value, int codingset)
-{
- GetBitContext *gb = &v->s.gb;
- int index, escape, run = 0, level = 0, lst = 0;
-
- index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
- if (index != ff_vc1_ac_sizes[codingset] - 1) {
- run = vc1_index_decode_table[codingset][index][0];
- level = vc1_index_decode_table[codingset][index][1];
- lst = index >= vc1_last_decode_table[codingset] || get_bits_left(gb) < 0;
- if (get_bits1(gb))
- level = -level;
- } else {
- escape = decode210(gb);
- if (escape != 2) {
- index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
- run = vc1_index_decode_table[codingset][index][0];
- level = vc1_index_decode_table[codingset][index][1];
- lst = index >= vc1_last_decode_table[codingset];
- if (escape == 0) {
- if (lst)
- level += vc1_last_delta_level_table[codingset][run];
- else
- level += vc1_delta_level_table[codingset][run];
- } else {
- if (lst)
- run += vc1_last_delta_run_table[codingset][level] + 1;
- else
- run += vc1_delta_run_table[codingset][level] + 1;
- }
- if (get_bits1(gb))
- level = -level;
- } else {
- int sign;
- lst = get_bits1(gb);
- if (v->s.esc3_level_length == 0) {
- if (v->pq < 8 || v->dquantfrm) { // table 59
- v->s.esc3_level_length = get_bits(gb, 3);
- if (!v->s.esc3_level_length)
- v->s.esc3_level_length = get_bits(gb, 2) + 8;
- } else { // table 60
- v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
- }
- v->s.esc3_run_length = 3 + get_bits(gb, 2);
- }
- run = get_bits(gb, v->s.esc3_run_length);
- sign = get_bits1(gb);
- level = get_bits(gb, v->s.esc3_level_length);
- if (sign)
- level = -level;
- }
- }
-
- *last = lst;
- *skip = run;
- *value = level;
-}
-
-/** Decode intra block in intra frames - should be faster than decode_intra_block
- * @param v VC1Context
- * @param block block to decode
- * @param[in] n subblock index
- * @param coded are AC coeffs present or not
- * @param codingset set of VLC to decode data
- */
-static int vc1_decode_i_block(VC1Context *v, int16_t block[64], int n,
- int coded, int codingset)
-{
- GetBitContext *gb = &v->s.gb;
- MpegEncContext *s = &v->s;
- int dc_pred_dir = 0; /* Direction of the DC prediction used */
- int i;
- int16_t *dc_val;
- int16_t *ac_val, *ac_val2;
- int dcdiff;
-
- /* Get DC differential */
- if (n < 4) {
- dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
- } else {
- dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
- }
- if (dcdiff < 0) {
- av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
- return -1;
- }
- if (dcdiff) {
- if (dcdiff == 119 /* ESC index value */) {
- /* TODO: Optimize */
- if (v->pq == 1) dcdiff = get_bits(gb, 10);
- else if (v->pq == 2) dcdiff = get_bits(gb, 9);
- else dcdiff = get_bits(gb, 8);
- } else {
- if (v->pq == 1)
- dcdiff = (dcdiff << 2) + get_bits(gb, 2) - 3;
- else if (v->pq == 2)
- dcdiff = (dcdiff << 1) + get_bits1(gb) - 1;
- }
- if (get_bits1(gb))
- dcdiff = -dcdiff;
- }
-
- /* Prediction */
- dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
- *dc_val = dcdiff;
-
- /* Store the quantized DC coeff, used for prediction */
- if (n < 4) {
- block[0] = dcdiff * s->y_dc_scale;
- } else {
- block[0] = dcdiff * s->c_dc_scale;
- }
- /* Skip ? */
- if (!coded) {
- goto not_coded;
- }
-
- // AC Decoding
- i = 1;
-
- {
- int last = 0, skip, value;
- const uint8_t *zz_table;
- int scale;
- int k;
-
- scale = v->pq * 2 + v->halfpq;
-
- if (v->s.ac_pred) {
- if (!dc_pred_dir)
- zz_table = v->zz_8x8[2];
- else
- zz_table = v->zz_8x8[3];
- } else
- zz_table = v->zz_8x8[1];
-
- ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
- ac_val2 = ac_val;
- if (dc_pred_dir) // left
- ac_val -= 16;
- else // top
- ac_val -= 16 * s->block_wrap[n];
-
- while (!last) {
- vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
- i += skip;
- if (i > 63)
- break;
- block[zz_table[i++]] = value;
- }
-
- /* apply AC prediction if needed */
- if (s->ac_pred) {
- if (dc_pred_dir) { // left
- for (k = 1; k < 8; k++)
- block[k << v->left_blk_sh] += ac_val[k];
- } else { // top
- for (k = 1; k < 8; k++)
- block[k << v->top_blk_sh] += ac_val[k + 8];
- }
- }
- /* save AC coeffs for further prediction */
- for (k = 1; k < 8; k++) {
- ac_val2[k] = block[k << v->left_blk_sh];
- ac_val2[k + 8] = block[k << v->top_blk_sh];
- }
-
- /* scale AC coeffs */
- for (k = 1; k < 64; k++)
- if (block[k]) {
- block[k] *= scale;
- if (!v->pquantizer)
- block[k] += (block[k] < 0) ? -v->pq : v->pq;
- }
-
- if (s->ac_pred) i = 63;
- }
-
-not_coded:
- if (!coded) {
- int k, scale;
- ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
- ac_val2 = ac_val;
-
- i = 0;
- scale = v->pq * 2 + v->halfpq;
- memset(ac_val2, 0, 16 * 2);
- if (dc_pred_dir) { // left
- ac_val -= 16;
- if (s->ac_pred)
- memcpy(ac_val2, ac_val, 8 * 2);
- } else { // top
- ac_val -= 16 * s->block_wrap[n];
- if (s->ac_pred)
- memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
- }
-
- /* apply AC prediction if needed */
- if (s->ac_pred) {
- if (dc_pred_dir) { //left
- for (k = 1; k < 8; k++) {
- block[k << v->left_blk_sh] = ac_val[k] * scale;
- if (!v->pquantizer && block[k << v->left_blk_sh])
- block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -v->pq : v->pq;
- }
- } else { // top
- for (k = 1; k < 8; k++) {
- block[k << v->top_blk_sh] = ac_val[k + 8] * scale;
- if (!v->pquantizer && block[k << v->top_blk_sh])
- block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -v->pq : v->pq;
- }
- }
- i = 63;
- }
- }
- s->block_last_index[n] = i;
-
- return 0;
-}
-
-/** Decode intra block in intra frames - should be faster than decode_intra_block
- * @param v VC1Context
- * @param block block to decode
- * @param[in] n subblock number
- * @param coded are AC coeffs present or not
- * @param codingset set of VLC to decode data
- * @param mquant quantizer value for this macroblock
- */
-static int vc1_decode_i_block_adv(VC1Context *v, int16_t block[64], int n,
- int coded, int codingset, int mquant)
-{
- GetBitContext *gb = &v->s.gb;
- MpegEncContext *s = &v->s;
- int dc_pred_dir = 0; /* Direction of the DC prediction used */
- int i;
- int16_t *dc_val;
- int16_t *ac_val, *ac_val2;
- int dcdiff;
- int a_avail = v->a_avail, c_avail = v->c_avail;
- int use_pred = s->ac_pred;
- int scale;
- int q1, q2 = 0;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
-
- /* Get DC differential */
- if (n < 4) {
- dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
- } else {
- dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
- }
- if (dcdiff < 0) {
- av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
- return -1;
- }
- if (dcdiff) {
- if (dcdiff == 119 /* ESC index value */) {
- /* TODO: Optimize */
- if (mquant == 1) dcdiff = get_bits(gb, 10);
- else if (mquant == 2) dcdiff = get_bits(gb, 9);
- else dcdiff = get_bits(gb, 8);
- } else {
- if (mquant == 1)
- dcdiff = (dcdiff << 2) + get_bits(gb, 2) - 3;
- else if (mquant == 2)
- dcdiff = (dcdiff << 1) + get_bits1(gb) - 1;
- }
- if (get_bits1(gb))
- dcdiff = -dcdiff;
- }
-
- /* Prediction */
- dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
- *dc_val = dcdiff;
-
- /* Store the quantized DC coeff, used for prediction */
- if (n < 4) {
- block[0] = dcdiff * s->y_dc_scale;
- } else {
- block[0] = dcdiff * s->c_dc_scale;
- }
-
- //AC Decoding
- i = 1;
-
- /* check if AC is needed at all */
- if (!a_avail && !c_avail)
- use_pred = 0;
- ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
- ac_val2 = ac_val;
-
- scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0);
-
- if (dc_pred_dir) // left
- ac_val -= 16;
- else // top
- ac_val -= 16 * s->block_wrap[n];
-
- q1 = s->current_picture.qscale_table[mb_pos];
- if ( dc_pred_dir && c_avail && mb_pos)
- q2 = s->current_picture.qscale_table[mb_pos - 1];
- if (!dc_pred_dir && a_avail && mb_pos >= s->mb_stride)
- q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
- if ( dc_pred_dir && n == 1)
- q2 = q1;
- if (!dc_pred_dir && n == 2)
- q2 = q1;
- if (n == 3)
- q2 = q1;
-
- if (coded) {
- int last = 0, skip, value;
- const uint8_t *zz_table;
- int k;
-
- if (v->s.ac_pred) {
- if (!use_pred && v->fcm == ILACE_FRAME) {
- zz_table = v->zzi_8x8;
- } else {
- if (!dc_pred_dir) // top
- zz_table = v->zz_8x8[2];
- else // left
- zz_table = v->zz_8x8[3];
- }
- } else {
- if (v->fcm != ILACE_FRAME)
- zz_table = v->zz_8x8[1];
- else
- zz_table = v->zzi_8x8;
- }
-
- while (!last) {
- vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
- i += skip;
- if (i > 63)
- break;
- block[zz_table[i++]] = value;
- }
-
- /* apply AC prediction if needed */
- if (use_pred) {
- /* scale predictors if needed*/
- if (q2 && q1 != q2) {
- q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
- q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
-
- if (q1 < 1)
- return AVERROR_INVALIDDATA;
- if (dc_pred_dir) { // left
- for (k = 1; k < 8; k++)
- block[k << v->left_blk_sh] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- } else { // top
- for (k = 1; k < 8; k++)
- block[k << v->top_blk_sh] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- }
- } else {
- if (dc_pred_dir) { //left
- for (k = 1; k < 8; k++)
- block[k << v->left_blk_sh] += ac_val[k];
- } else { //top
- for (k = 1; k < 8; k++)
- block[k << v->top_blk_sh] += ac_val[k + 8];
- }
- }
- }
- /* save AC coeffs for further prediction */
- for (k = 1; k < 8; k++) {
- ac_val2[k ] = block[k << v->left_blk_sh];
- ac_val2[k + 8] = block[k << v->top_blk_sh];
- }
-
- /* scale AC coeffs */
- for (k = 1; k < 64; k++)
- if (block[k]) {
- block[k] *= scale;
- if (!v->pquantizer)
- block[k] += (block[k] < 0) ? -mquant : mquant;
- }
-
- if (use_pred) i = 63;
- } else { // no AC coeffs
- int k;
-
- memset(ac_val2, 0, 16 * 2);
- if (dc_pred_dir) { // left
- if (use_pred) {
- memcpy(ac_val2, ac_val, 8 * 2);
- if (q2 && q1 != q2) {
- q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
- q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
- if (q1 < 1)
- return AVERROR_INVALIDDATA;
- for (k = 1; k < 8; k++)
- ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- }
- }
- } else { // top
- if (use_pred) {
- memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
- if (q2 && q1 != q2) {
- q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
- q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
- if (q1 < 1)
- return AVERROR_INVALIDDATA;
- for (k = 1; k < 8; k++)
- ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- }
- }
- }
-
- /* apply AC prediction if needed */
- if (use_pred) {
- if (dc_pred_dir) { // left
- for (k = 1; k < 8; k++) {
- block[k << v->left_blk_sh] = ac_val2[k] * scale;
- if (!v->pquantizer && block[k << v->left_blk_sh])
- block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -mquant : mquant;
- }
- } else { // top
- for (k = 1; k < 8; k++) {
- block[k << v->top_blk_sh] = ac_val2[k + 8] * scale;
- if (!v->pquantizer && block[k << v->top_blk_sh])
- block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -mquant : mquant;
- }
- }
- i = 63;
- }
- }
- s->block_last_index[n] = i;
-
- return 0;
-}
-
-/** Decode intra block in inter frames - more generic version than vc1_decode_i_block
- * @param v VC1Context
- * @param block block to decode
- * @param[in] n subblock index
- * @param coded are AC coeffs present or not
- * @param mquant block quantizer
- * @param codingset set of VLC to decode data
- */
-static int vc1_decode_intra_block(VC1Context *v, int16_t block[64], int n,
- int coded, int mquant, int codingset)
-{
- GetBitContext *gb = &v->s.gb;
- MpegEncContext *s = &v->s;
- int dc_pred_dir = 0; /* Direction of the DC prediction used */
- int i;
- int16_t *dc_val;
- int16_t *ac_val, *ac_val2;
- int dcdiff;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- int a_avail = v->a_avail, c_avail = v->c_avail;
- int use_pred = s->ac_pred;
- int scale;
- int q1, q2 = 0;
-
- s->bdsp.clear_block(block);
-
- /* XXX: Guard against dumb values of mquant */
- mquant = (mquant < 1) ? 0 : ((mquant > 31) ? 31 : mquant);
-
- /* Set DC scale - y and c use the same */
- s->y_dc_scale = s->y_dc_scale_table[mquant];
- s->c_dc_scale = s->c_dc_scale_table[mquant];
-
- /* Get DC differential */
- if (n < 4) {
- dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
- } else {
- dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
- }
- if (dcdiff < 0) {
- av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
- return -1;
- }
- if (dcdiff) {
- if (dcdiff == 119 /* ESC index value */) {
- /* TODO: Optimize */
- if (mquant == 1) dcdiff = get_bits(gb, 10);
- else if (mquant == 2) dcdiff = get_bits(gb, 9);
- else dcdiff = get_bits(gb, 8);
- } else {
- if (mquant == 1)
- dcdiff = (dcdiff << 2) + get_bits(gb, 2) - 3;
- else if (mquant == 2)
- dcdiff = (dcdiff << 1) + get_bits1(gb) - 1;
- }
- if (get_bits1(gb))
- dcdiff = -dcdiff;
- }
-
- /* Prediction */
- dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
- *dc_val = dcdiff;
-
- /* Store the quantized DC coeff, used for prediction */
-
- if (n < 4) {
- block[0] = dcdiff * s->y_dc_scale;
- } else {
- block[0] = dcdiff * s->c_dc_scale;
- }
-
- //AC Decoding
- i = 1;
-
- /* check if AC is needed at all and adjust direction if needed */
- if (!a_avail) dc_pred_dir = 1;
- if (!c_avail) dc_pred_dir = 0;
- if (!a_avail && !c_avail) use_pred = 0;
- ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
- ac_val2 = ac_val;
-
- scale = mquant * 2 + v->halfpq;
-
- if (dc_pred_dir) //left
- ac_val -= 16;
- else //top
- ac_val -= 16 * s->block_wrap[n];
-
- q1 = s->current_picture.qscale_table[mb_pos];
- if (dc_pred_dir && c_avail && mb_pos)
- q2 = s->current_picture.qscale_table[mb_pos - 1];
- if (!dc_pred_dir && a_avail && mb_pos >= s->mb_stride)
- q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
- if ( dc_pred_dir && n == 1)
- q2 = q1;
- if (!dc_pred_dir && n == 2)
- q2 = q1;
- if (n == 3) q2 = q1;
-
- if (coded) {
- int last = 0, skip, value;
- int k;
-
- while (!last) {
- vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
- i += skip;
- if (i > 63)
- break;
- if (v->fcm == PROGRESSIVE)
- block[v->zz_8x8[0][i++]] = value;
- else {
- if (use_pred && (v->fcm == ILACE_FRAME)) {
- if (!dc_pred_dir) // top
- block[v->zz_8x8[2][i++]] = value;
- else // left
- block[v->zz_8x8[3][i++]] = value;
- } else {
- block[v->zzi_8x8[i++]] = value;
- }
- }
- }
-
- /* apply AC prediction if needed */
- if (use_pred) {
- /* scale predictors if needed*/
- if (q2 && q1 != q2) {
- q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
- q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
-
- if (q1 < 1)
- return AVERROR_INVALIDDATA;
- if (dc_pred_dir) { // left
- for (k = 1; k < 8; k++)
- block[k << v->left_blk_sh] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- } else { //top
- for (k = 1; k < 8; k++)
- block[k << v->top_blk_sh] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- }
- } else {
- if (dc_pred_dir) { // left
- for (k = 1; k < 8; k++)
- block[k << v->left_blk_sh] += ac_val[k];
- } else { // top
- for (k = 1; k < 8; k++)
- block[k << v->top_blk_sh] += ac_val[k + 8];
- }
- }
- }
- /* save AC coeffs for further prediction */
- for (k = 1; k < 8; k++) {
- ac_val2[k ] = block[k << v->left_blk_sh];
- ac_val2[k + 8] = block[k << v->top_blk_sh];
- }
-
- /* scale AC coeffs */
- for (k = 1; k < 64; k++)
- if (block[k]) {
- block[k] *= scale;
- if (!v->pquantizer)
- block[k] += (block[k] < 0) ? -mquant : mquant;
- }
-
- if (use_pred) i = 63;
- } else { // no AC coeffs
- int k;
-
- memset(ac_val2, 0, 16 * 2);
- if (dc_pred_dir) { // left
- if (use_pred) {
- memcpy(ac_val2, ac_val, 8 * 2);
- if (q2 && q1 != q2) {
- q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
- q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
- if (q1 < 1)
- return AVERROR_INVALIDDATA;
- for (k = 1; k < 8; k++)
- ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- }
- }
- } else { // top
- if (use_pred) {
- memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
- if (q2 && q1 != q2) {
- q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
- q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
- if (q1 < 1)
- return AVERROR_INVALIDDATA;
- for (k = 1; k < 8; k++)
- ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
- }
- }
- }
-
- /* apply AC prediction if needed */
- if (use_pred) {
- if (dc_pred_dir) { // left
- for (k = 1; k < 8; k++) {
- block[k << v->left_blk_sh] = ac_val2[k] * scale;
- if (!v->pquantizer && block[k << v->left_blk_sh])
- block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -mquant : mquant;
- }
- } else { // top
- for (k = 1; k < 8; k++) {
- block[k << v->top_blk_sh] = ac_val2[k + 8] * scale;
- if (!v->pquantizer && block[k << v->top_blk_sh])
- block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -mquant : mquant;
- }
- }
- i = 63;
- }
- }
- s->block_last_index[n] = i;
-
- return 0;
-}
-
-/** Decode P block
- */
-static int vc1_decode_p_block(VC1Context *v, int16_t block[64], int n,
- int mquant, int ttmb, int first_block,
- uint8_t *dst, int linesize, int skip_block,
- int *ttmb_out)
-{
- MpegEncContext *s = &v->s;
- GetBitContext *gb = &s->gb;
- int i, j;
- int subblkpat = 0;
- int scale, off, idx, last, skip, value;
- int ttblk = ttmb & 7;
- int pat = 0;
-
- s->bdsp.clear_block(block);
-
- if (ttmb == -1) {
- ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index].table, VC1_TTBLK_VLC_BITS, 1)];
- }
- if (ttblk == TT_4X4) {
- subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
- }
- if ((ttblk != TT_8X8 && ttblk != TT_4X4)
- && ((v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))
- || (!v->res_rtm_flag && !first_block))) {
- subblkpat = decode012(gb);
- if (subblkpat)
- subblkpat ^= 3; // swap decoded pattern bits
- if (ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM)
- ttblk = TT_8X4;
- if (ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT)
- ttblk = TT_4X8;
- }
- scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0);
-
- // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
- if (ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
- subblkpat = 2 - (ttblk == TT_8X4_TOP);
- ttblk = TT_8X4;
- }
- if (ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
- subblkpat = 2 - (ttblk == TT_4X8_LEFT);
- ttblk = TT_4X8;
- }
- switch (ttblk) {
- case TT_8X8:
- pat = 0xF;
- i = 0;
- last = 0;
- while (!last) {
- vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
- i += skip;
- if (i > 63)
- break;
- if (!v->fcm)
- idx = v->zz_8x8[0][i++];
- else
- idx = v->zzi_8x8[i++];
- block[idx] = value * scale;
- if (!v->pquantizer)
- block[idx] += (block[idx] < 0) ? -mquant : mquant;
- }
- if (!skip_block) {
- if (i == 1)
- v->vc1dsp.vc1_inv_trans_8x8_dc(dst, linesize, block);
- else {
- v->vc1dsp.vc1_inv_trans_8x8(block);
- s->idsp.add_pixels_clamped(block, dst, linesize);
- }
- }
- break;
- case TT_4X4:
- pat = ~subblkpat & 0xF;
- for (j = 0; j < 4; j++) {
- last = subblkpat & (1 << (3 - j));
- i = 0;
- off = (j & 1) * 4 + (j & 2) * 16;
- while (!last) {
- vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
- i += skip;
- if (i > 15)
- break;
- if (!v->fcm)
- idx = ff_vc1_simple_progressive_4x4_zz[i++];
- else
- idx = ff_vc1_adv_interlaced_4x4_zz[i++];
- block[idx + off] = value * scale;
- if (!v->pquantizer)
- block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
- }
- if (!(subblkpat & (1 << (3 - j))) && !skip_block) {
- if (i == 1)
- v->vc1dsp.vc1_inv_trans_4x4_dc(dst + (j & 1) * 4 + (j & 2) * 2 * linesize, linesize, block + off);
- else
- v->vc1dsp.vc1_inv_trans_4x4(dst + (j & 1) * 4 + (j & 2) * 2 * linesize, linesize, block + off);
- }
- }
- break;
- case TT_8X4:
- pat = ~((subblkpat & 2) * 6 + (subblkpat & 1) * 3) & 0xF;
- for (j = 0; j < 2; j++) {
- last = subblkpat & (1 << (1 - j));
- i = 0;
- off = j * 32;
- while (!last) {
- vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
- i += skip;
- if (i > 31)
- break;
- if (!v->fcm)
- idx = v->zz_8x4[i++] + off;
- else
- idx = ff_vc1_adv_interlaced_8x4_zz[i++] + off;
- block[idx] = value * scale;
- if (!v->pquantizer)
- block[idx] += (block[idx] < 0) ? -mquant : mquant;
- }
- if (!(subblkpat & (1 << (1 - j))) && !skip_block) {
- if (i == 1)
- v->vc1dsp.vc1_inv_trans_8x4_dc(dst + j * 4 * linesize, linesize, block + off);
- else
- v->vc1dsp.vc1_inv_trans_8x4(dst + j * 4 * linesize, linesize, block + off);
- }
- }
- break;
- case TT_4X8:
- pat = ~(subblkpat * 5) & 0xF;
- for (j = 0; j < 2; j++) {
- last = subblkpat & (1 << (1 - j));
- i = 0;
- off = j * 4;
- while (!last) {
- vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
- i += skip;
- if (i > 31)
- break;
- if (!v->fcm)
- idx = v->zz_4x8[i++] + off;
- else
- idx = ff_vc1_adv_interlaced_4x8_zz[i++] + off;
- block[idx] = value * scale;
- if (!v->pquantizer)
- block[idx] += (block[idx] < 0) ? -mquant : mquant;
- }
- if (!(subblkpat & (1 << (1 - j))) && !skip_block) {
- if (i == 1)
- v->vc1dsp.vc1_inv_trans_4x8_dc(dst + j * 4, linesize, block + off);
- else
- v->vc1dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off);
- }
- }
- break;
- }
- if (ttmb_out)
- *ttmb_out |= ttblk << (n * 4);
- return pat;
-}
-
-/** @} */ // Macroblock group
-
-static const int size_table [6] = { 0, 2, 3, 4, 5, 8 };
-static const int offset_table[6] = { 0, 1, 3, 7, 15, 31 };
-
-static av_always_inline void vc1_apply_p_v_loop_filter(VC1Context *v, int block_num)
-{
- MpegEncContext *s = &v->s;
- int mb_cbp = v->cbp[s->mb_x - s->mb_stride],
- block_cbp = mb_cbp >> (block_num * 4), bottom_cbp,
- mb_is_intra = v->is_intra[s->mb_x - s->mb_stride],
- block_is_intra = mb_is_intra >> (block_num * 4), bottom_is_intra;
- int idx, linesize = block_num > 3 ? s->uvlinesize : s->linesize, ttblk;
- uint8_t *dst;
-
- if (block_num > 3) {
- dst = s->dest[block_num - 3];
- } else {
- dst = s->dest[0] + (block_num & 1) * 8 + ((block_num & 2) * 4 - 8) * linesize;
- }
- if (s->mb_y != s->end_mb_y || block_num < 2) {
- int16_t (*mv)[2];
- int mv_stride;
-
- if (block_num > 3) {
- bottom_cbp = v->cbp[s->mb_x] >> (block_num * 4);
- bottom_is_intra = v->is_intra[s->mb_x] >> (block_num * 4);
- mv = &v->luma_mv[s->mb_x - s->mb_stride];
- mv_stride = s->mb_stride;
- } else {
- bottom_cbp = (block_num < 2) ? (mb_cbp >> ((block_num + 2) * 4))
- : (v->cbp[s->mb_x] >> ((block_num - 2) * 4));
- bottom_is_intra = (block_num < 2) ? (mb_is_intra >> ((block_num + 2) * 4))
- : (v->is_intra[s->mb_x] >> ((block_num - 2) * 4));
- mv_stride = s->b8_stride;
- mv = &s->current_picture.motion_val[0][s->block_index[block_num] - 2 * mv_stride];
- }
-
- if (bottom_is_intra & 1 || block_is_intra & 1 ||
- mv[0][0] != mv[mv_stride][0] || mv[0][1] != mv[mv_stride][1]) {
- v->vc1dsp.vc1_v_loop_filter8(dst, linesize, v->pq);
- } else {
- idx = ((bottom_cbp >> 2) | block_cbp) & 3;
- if (idx == 3) {
- v->vc1dsp.vc1_v_loop_filter8(dst, linesize, v->pq);
- } else if (idx) {
- if (idx == 1)
- v->vc1dsp.vc1_v_loop_filter4(dst + 4, linesize, v->pq);
- else
- v->vc1dsp.vc1_v_loop_filter4(dst, linesize, v->pq);
- }
- }
- }
-
- dst -= 4 * linesize;
- ttblk = (v->ttblk[s->mb_x - s->mb_stride] >> (block_num * 4)) & 0xF;
- if (ttblk == TT_4X4 || ttblk == TT_8X4) {
- idx = (block_cbp | (block_cbp >> 2)) & 3;
- if (idx == 3) {
- v->vc1dsp.vc1_v_loop_filter8(dst, linesize, v->pq);
- } else if (idx) {
- if (idx == 1)
- v->vc1dsp.vc1_v_loop_filter4(dst + 4, linesize, v->pq);
- else
- v->vc1dsp.vc1_v_loop_filter4(dst, linesize, v->pq);
- }
- }
-}
-
-static av_always_inline void vc1_apply_p_h_loop_filter(VC1Context *v, int block_num)
-{
- MpegEncContext *s = &v->s;
- int mb_cbp = v->cbp[s->mb_x - 1 - s->mb_stride],
- block_cbp = mb_cbp >> (block_num * 4), right_cbp,
- mb_is_intra = v->is_intra[s->mb_x - 1 - s->mb_stride],
- block_is_intra = mb_is_intra >> (block_num * 4), right_is_intra;
- int idx, linesize = block_num > 3 ? s->uvlinesize : s->linesize, ttblk;
- uint8_t *dst;
-
- if (block_num > 3) {
- dst = s->dest[block_num - 3] - 8 * linesize;
- } else {
- dst = s->dest[0] + (block_num & 1) * 8 + ((block_num & 2) * 4 - 16) * linesize - 8;
- }
-
- if (s->mb_x != s->mb_width || !(block_num & 5)) {
- int16_t (*mv)[2];
-
- if (block_num > 3) {
- right_cbp = v->cbp[s->mb_x - s->mb_stride] >> (block_num * 4);
- right_is_intra = v->is_intra[s->mb_x - s->mb_stride] >> (block_num * 4);
- mv = &v->luma_mv[s->mb_x - s->mb_stride - 1];
- } else {
- right_cbp = (block_num & 1) ? (v->cbp[s->mb_x - s->mb_stride] >> ((block_num - 1) * 4))
- : (mb_cbp >> ((block_num + 1) * 4));
- right_is_intra = (block_num & 1) ? (v->is_intra[s->mb_x - s->mb_stride] >> ((block_num - 1) * 4))
- : (mb_is_intra >> ((block_num + 1) * 4));
- mv = &s->current_picture.motion_val[0][s->block_index[block_num] - s->b8_stride * 2 - 2];
- }
- if (block_is_intra & 1 || right_is_intra & 1 || mv[0][0] != mv[1][0] || mv[0][1] != mv[1][1]) {
- v->vc1dsp.vc1_h_loop_filter8(dst, linesize, v->pq);
- } else {
- idx = ((right_cbp >> 1) | block_cbp) & 5; // FIXME check
- if (idx == 5) {
- v->vc1dsp.vc1_h_loop_filter8(dst, linesize, v->pq);
- } else if (idx) {
- if (idx == 1)
- v->vc1dsp.vc1_h_loop_filter4(dst + 4 * linesize, linesize, v->pq);
- else
- v->vc1dsp.vc1_h_loop_filter4(dst, linesize, v->pq);
- }
- }
- }
-
- dst -= 4;
- ttblk = (v->ttblk[s->mb_x - s->mb_stride - 1] >> (block_num * 4)) & 0xf;
- if (ttblk == TT_4X4 || ttblk == TT_4X8) {
- idx = (block_cbp | (block_cbp >> 1)) & 5;
- if (idx == 5) {
- v->vc1dsp.vc1_h_loop_filter8(dst, linesize, v->pq);
- } else if (idx) {
- if (idx == 1)
- v->vc1dsp.vc1_h_loop_filter4(dst + linesize * 4, linesize, v->pq);
- else
- v->vc1dsp.vc1_h_loop_filter4(dst, linesize, v->pq);
- }
- }
-}
-
-static void vc1_apply_p_loop_filter(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
- int i;
-
- for (i = 0; i < 6; i++) {
- vc1_apply_p_v_loop_filter(v, i);
- }
-
- /* V always precedes H, therefore we run H one MB before V;
- * at the end of a row, we catch up to complete the row */
- if (s->mb_x) {
- for (i = 0; i < 6; i++) {
- vc1_apply_p_h_loop_filter(v, i);
- }
- if (s->mb_x == s->mb_width - 1) {
- s->mb_x++;
- ff_update_block_index(s);
- for (i = 0; i < 6; i++) {
- vc1_apply_p_h_loop_filter(v, i);
- }
- }
- }
-}
-
-/** Decode one P-frame MB
- */
-static int vc1_decode_p_mb(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
- GetBitContext *gb = &s->gb;
- int i, j;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- int cbp; /* cbp decoding stuff */
- int mqdiff, mquant; /* MB quantization */
- int ttmb = v->ttfrm; /* MB Transform type */
-
- int mb_has_coeffs = 1; /* last_flag */
- int dmv_x, dmv_y; /* Differential MV components */
- int index, index1; /* LUT indexes */
- int val, sign; /* temp values */
- int first_block = 1;
- int dst_idx, off;
- int skipped, fourmv;
- int block_cbp = 0, pat, block_tt = 0, block_intra = 0;
-
- mquant = v->pq; /* lossy initialization */
-
- if (v->mv_type_is_raw)
- fourmv = get_bits1(gb);
- else
- fourmv = v->mv_type_mb_plane[mb_pos];
- if (v->skip_is_raw)
- skipped = get_bits1(gb);
- else
- skipped = v->s.mbskip_table[mb_pos];
-
- if (!fourmv) { /* 1MV mode */
- if (!skipped) {
- GET_MVDATA(dmv_x, dmv_y);
-
- if (s->mb_intra) {
- s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
- s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
- }
- s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
- vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0, 0);
-
- /* FIXME Set DC val for inter block ? */
- if (s->mb_intra && !mb_has_coeffs) {
- GET_MQUANT();
- s->ac_pred = get_bits1(gb);
- cbp = 0;
- } else if (mb_has_coeffs) {
- if (s->mb_intra)
- s->ac_pred = get_bits1(gb);
- cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
- GET_MQUANT();
- } else {
- mquant = v->pq;
- cbp = 0;
- }
- s->current_picture.qscale_table[mb_pos] = mquant;
-
- if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
- ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table,
- VC1_TTMB_VLC_BITS, 2);
- if (!s->mb_intra) vc1_mc_1mv(v, 0);
- dst_idx = 0;
- for (i = 0; i < 6; i++) {
- s->dc_val[0][s->block_index[i]] = 0;
- dst_idx += i >> 2;
- val = ((cbp >> (5 - i)) & 1);
- off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
- v->mb_type[0][s->block_index[i]] = s->mb_intra;
- if (s->mb_intra) {
- /* check if prediction blocks A and C are available */
- v->a_avail = v->c_avail = 0;
- if (i == 2 || i == 3 || !s->first_slice_line)
- v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
- if (i == 1 || i == 3 || s->mb_x)
- v->c_avail = v->mb_type[0][s->block_index[i] - 1];
-
- vc1_decode_intra_block(v, s->block[i], i, val, mquant,
- (i & 4) ? v->codingset2 : v->codingset);
- if ((i>3) && (s->flags & CODEC_FLAG_GRAY))
- continue;
- v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
- if (v->rangeredfrm)
- for (j = 0; j < 64; j++)
- s->block[i][j] <<= 1;
- s->idsp.put_signed_pixels_clamped(s->block[i],
- s->dest[dst_idx] + off,
- i & 4 ? s->uvlinesize
- : s->linesize);
- if (v->pq >= 9 && v->overlap) {
- if (v->c_avail)
- v->vc1dsp.vc1_h_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize);
- if (v->a_avail)
- v->vc1dsp.vc1_v_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize);
- }
- block_cbp |= 0xF << (i << 2);
- block_intra |= 1 << i;
- } else if (val) {
- pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block,
- s->dest[dst_idx] + off, (i & 4) ? s->uvlinesize : s->linesize,
- (i & 4) && (s->flags & CODEC_FLAG_GRAY), &block_tt);
- block_cbp |= pat << (i << 2);
- if (!v->ttmbf && ttmb < 8)
- ttmb = -1;
- first_block = 0;
- }
- }
- } else { // skipped
- s->mb_intra = 0;
- for (i = 0; i < 6; i++) {
- v->mb_type[0][s->block_index[i]] = 0;
- s->dc_val[0][s->block_index[i]] = 0;
- }
- s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
- s->current_picture.qscale_table[mb_pos] = 0;
- vc1_pred_mv(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0, 0);
- vc1_mc_1mv(v, 0);
- }
- } else { // 4MV mode
- if (!skipped /* unskipped MB */) {
- int intra_count = 0, coded_inter = 0;
- int is_intra[6], is_coded[6];
- /* Get CBPCY */
- cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
- for (i = 0; i < 6; i++) {
- val = ((cbp >> (5 - i)) & 1);
- s->dc_val[0][s->block_index[i]] = 0;
- s->mb_intra = 0;
- if (i < 4) {
- dmv_x = dmv_y = 0;
- s->mb_intra = 0;
- mb_has_coeffs = 0;
- if (val) {
- GET_MVDATA(dmv_x, dmv_y);
- }
- vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], 0, 0);
- if (!s->mb_intra)
- vc1_mc_4mv_luma(v, i, 0, 0);
- intra_count += s->mb_intra;
- is_intra[i] = s->mb_intra;
- is_coded[i] = mb_has_coeffs;
- }
- if (i & 4) {
- is_intra[i] = (intra_count >= 3);
- is_coded[i] = val;
- }
- if (i == 4)
- vc1_mc_4mv_chroma(v, 0);
- v->mb_type[0][s->block_index[i]] = is_intra[i];
- if (!coded_inter)
- coded_inter = !is_intra[i] && is_coded[i];
- }
- // if there are no coded blocks then don't do anything more
- dst_idx = 0;
- if (!intra_count && !coded_inter)
- goto end;
- GET_MQUANT();
- s->current_picture.qscale_table[mb_pos] = mquant;
- /* test if block is intra and has pred */
- {
- int intrapred = 0;
- for (i = 0; i < 6; i++)
- if (is_intra[i]) {
- if (((!s->first_slice_line || (i == 2 || i == 3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
- || ((s->mb_x || (i == 1 || i == 3)) && v->mb_type[0][s->block_index[i] - 1])) {
- intrapred = 1;
- break;
- }
- }
- if (intrapred)
- s->ac_pred = get_bits1(gb);
- else
- s->ac_pred = 0;
- }
- if (!v->ttmbf && coded_inter)
- ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
- for (i = 0; i < 6; i++) {
- dst_idx += i >> 2;
- off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
- s->mb_intra = is_intra[i];
- if (is_intra[i]) {
- /* check if prediction blocks A and C are available */
- v->a_avail = v->c_avail = 0;
- if (i == 2 || i == 3 || !s->first_slice_line)
- v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
- if (i == 1 || i == 3 || s->mb_x)
- v->c_avail = v->mb_type[0][s->block_index[i] - 1];
-
- vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant,
- (i & 4) ? v->codingset2 : v->codingset);
- if ((i>3) && (s->flags & CODEC_FLAG_GRAY))
- continue;
- v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
- if (v->rangeredfrm)
- for (j = 0; j < 64; j++)
- s->block[i][j] <<= 1;
- s->idsp.put_signed_pixels_clamped(s->block[i],
- s->dest[dst_idx] + off,
- (i & 4) ? s->uvlinesize
- : s->linesize);
- if (v->pq >= 9 && v->overlap) {
- if (v->c_avail)
- v->vc1dsp.vc1_h_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize);
- if (v->a_avail)
- v->vc1dsp.vc1_v_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize);
- }
- block_cbp |= 0xF << (i << 2);
- block_intra |= 1 << i;
- } else if (is_coded[i]) {
- pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
- first_block, s->dest[dst_idx] + off,
- (i & 4) ? s->uvlinesize : s->linesize,
- (i & 4) && (s->flags & CODEC_FLAG_GRAY),
- &block_tt);
- block_cbp |= pat << (i << 2);
- if (!v->ttmbf && ttmb < 8)
- ttmb = -1;
- first_block = 0;
- }
- }
- } else { // skipped MB
- s->mb_intra = 0;
- s->current_picture.qscale_table[mb_pos] = 0;
- for (i = 0; i < 6; i++) {
- v->mb_type[0][s->block_index[i]] = 0;
- s->dc_val[0][s->block_index[i]] = 0;
- }
- for (i = 0; i < 4; i++) {
- vc1_pred_mv(v, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0], 0, 0);
- vc1_mc_4mv_luma(v, i, 0, 0);
- }
- vc1_mc_4mv_chroma(v, 0);
- s->current_picture.qscale_table[mb_pos] = 0;
- }
- }
-end:
- v->cbp[s->mb_x] = block_cbp;
- v->ttblk[s->mb_x] = block_tt;
- v->is_intra[s->mb_x] = block_intra;
-
- return 0;
-}
-
-/* Decode one macroblock in an interlaced frame p picture */
-
-static int vc1_decode_p_mb_intfr(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
- GetBitContext *gb = &s->gb;
- int i;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- int cbp = 0; /* cbp decoding stuff */
- int mqdiff, mquant; /* MB quantization */
- int ttmb = v->ttfrm; /* MB Transform type */
-
- int mb_has_coeffs = 1; /* last_flag */
- int dmv_x, dmv_y; /* Differential MV components */
- int val; /* temp value */
- int first_block = 1;
- int dst_idx, off;
- int skipped, fourmv = 0, twomv = 0;
- int block_cbp = 0, pat, block_tt = 0;
- int idx_mbmode = 0, mvbp;
- int stride_y, fieldtx;
-
- mquant = v->pq; /* Loosy initialization */
-
- if (v->skip_is_raw)
- skipped = get_bits1(gb);
- else
- skipped = v->s.mbskip_table[mb_pos];
- if (!skipped) {
- if (v->fourmvswitch)
- idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_4MV_MBMODE_VLC_BITS, 2); // try getting this done
- else
- idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2); // in a single line
- switch (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0]) {
- /* store the motion vector type in a flag (useful later) */
- case MV_PMODE_INTFR_4MV:
- fourmv = 1;
- v->blk_mv_type[s->block_index[0]] = 0;
- v->blk_mv_type[s->block_index[1]] = 0;
- v->blk_mv_type[s->block_index[2]] = 0;
- v->blk_mv_type[s->block_index[3]] = 0;
- break;
- case MV_PMODE_INTFR_4MV_FIELD:
- fourmv = 1;
- v->blk_mv_type[s->block_index[0]] = 1;
- v->blk_mv_type[s->block_index[1]] = 1;
- v->blk_mv_type[s->block_index[2]] = 1;
- v->blk_mv_type[s->block_index[3]] = 1;
- break;
- case MV_PMODE_INTFR_2MV_FIELD:
- twomv = 1;
- v->blk_mv_type[s->block_index[0]] = 1;
- v->blk_mv_type[s->block_index[1]] = 1;
- v->blk_mv_type[s->block_index[2]] = 1;
- v->blk_mv_type[s->block_index[3]] = 1;
- break;
- case MV_PMODE_INTFR_1MV:
- v->blk_mv_type[s->block_index[0]] = 0;
- v->blk_mv_type[s->block_index[1]] = 0;
- v->blk_mv_type[s->block_index[2]] = 0;
- v->blk_mv_type[s->block_index[3]] = 0;
- break;
- }
- if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB
- for (i = 0; i < 4; i++) {
- s->current_picture.motion_val[1][s->block_index[i]][0] = 0;
- s->current_picture.motion_val[1][s->block_index[i]][1] = 0;
- }
- s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
- s->mb_intra = v->is_intra[s->mb_x] = 1;
- for (i = 0; i < 6; i++)
- v->mb_type[0][s->block_index[i]] = 1;
- fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb);
- mb_has_coeffs = get_bits1(gb);
- if (mb_has_coeffs)
- cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
- v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
- GET_MQUANT();
- s->current_picture.qscale_table[mb_pos] = mquant;
- /* Set DC scale - y and c use the same (not sure if necessary here) */
- s->y_dc_scale = s->y_dc_scale_table[mquant];
- s->c_dc_scale = s->c_dc_scale_table[mquant];
- dst_idx = 0;
- for (i = 0; i < 6; i++) {
- s->dc_val[0][s->block_index[i]] = 0;
- dst_idx += i >> 2;
- val = ((cbp >> (5 - i)) & 1);
- v->mb_type[0][s->block_index[i]] = s->mb_intra;
- v->a_avail = v->c_avail = 0;
- if (i == 2 || i == 3 || !s->first_slice_line)
- v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
- if (i == 1 || i == 3 || s->mb_x)
- v->c_avail = v->mb_type[0][s->block_index[i] - 1];
-
- vc1_decode_intra_block(v, s->block[i], i, val, mquant,
- (i & 4) ? v->codingset2 : v->codingset);
- if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
- v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
- if (i < 4) {
- stride_y = s->linesize << fieldtx;
- off = (fieldtx) ? ((i & 1) * 8) + ((i & 2) >> 1) * s->linesize : (i & 1) * 8 + 4 * (i & 2) * s->linesize;
- } else {
- stride_y = s->uvlinesize;
- off = 0;
- }
- s->idsp.put_signed_pixels_clamped(s->block[i],
- s->dest[dst_idx] + off,
- stride_y);
- //TODO: loop filter
- }
-
- } else { // inter MB
- mb_has_coeffs = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][3];
- if (mb_has_coeffs)
- cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
- if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) {
- v->twomvbp = get_vlc2(gb, v->twomvbp_vlc->table, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
- } else {
- if ((ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV)
- || (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV_FIELD)) {
- v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
- }
- }
- s->mb_intra = v->is_intra[s->mb_x] = 0;
- for (i = 0; i < 6; i++)
- v->mb_type[0][s->block_index[i]] = 0;
- fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][1];
- /* for all motion vector read MVDATA and motion compensate each block */
- dst_idx = 0;
- if (fourmv) {
- mvbp = v->fourmvbp;
- for (i = 0; i < 6; i++) {
- if (i < 4) {
- dmv_x = dmv_y = 0;
- val = ((mvbp >> (3 - i)) & 1);
- if (val) {
- get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
- }
- vc1_pred_mv_intfr(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], 0);
- vc1_mc_4mv_luma(v, i, 0, 0);
- } else if (i == 4) {
- vc1_mc_4mv_chroma4(v, 0, 0, 0);
- }
- }
- } else if (twomv) {
- mvbp = v->twomvbp;
- dmv_x = dmv_y = 0;
- if (mvbp & 2) {
- get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
- }
- vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], 0);
- vc1_mc_4mv_luma(v, 0, 0, 0);
- vc1_mc_4mv_luma(v, 1, 0, 0);
- dmv_x = dmv_y = 0;
- if (mvbp & 1) {
- get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
- }
- vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], 0);
- vc1_mc_4mv_luma(v, 2, 0, 0);
- vc1_mc_4mv_luma(v, 3, 0, 0);
- vc1_mc_4mv_chroma4(v, 0, 0, 0);
- } else {
- mvbp = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][2];
- dmv_x = dmv_y = 0;
- if (mvbp) {
- get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
- }
- vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0);
- vc1_mc_1mv(v, 0);
- }
- if (cbp)
- GET_MQUANT(); // p. 227
- s->current_picture.qscale_table[mb_pos] = mquant;
- if (!v->ttmbf && cbp)
- ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
- for (i = 0; i < 6; i++) {
- s->dc_val[0][s->block_index[i]] = 0;
- dst_idx += i >> 2;
- val = ((cbp >> (5 - i)) & 1);
- if (!fieldtx)
- off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
- else
- off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize));
- if (val) {
- pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
- first_block, s->dest[dst_idx] + off,
- (i & 4) ? s->uvlinesize : (s->linesize << fieldtx),
- (i & 4) && (s->flags & CODEC_FLAG_GRAY), &block_tt);
- block_cbp |= pat << (i << 2);
- if (!v->ttmbf && ttmb < 8)
- ttmb = -1;
- first_block = 0;
- }
- }
- }
- } else { // skipped
- s->mb_intra = v->is_intra[s->mb_x] = 0;
- for (i = 0; i < 6; i++) {
- v->mb_type[0][s->block_index[i]] = 0;
- s->dc_val[0][s->block_index[i]] = 0;
- }
- s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
- s->current_picture.qscale_table[mb_pos] = 0;
- v->blk_mv_type[s->block_index[0]] = 0;
- v->blk_mv_type[s->block_index[1]] = 0;
- v->blk_mv_type[s->block_index[2]] = 0;
- v->blk_mv_type[s->block_index[3]] = 0;
- vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0);
- vc1_mc_1mv(v, 0);
- }
- if (s->mb_x == s->mb_width - 1)
- memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0])*s->mb_stride);
- return 0;
-}
-
-static int vc1_decode_p_mb_intfi(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
- GetBitContext *gb = &s->gb;
- int i;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- int cbp = 0; /* cbp decoding stuff */
- int mqdiff, mquant; /* MB quantization */
- int ttmb = v->ttfrm; /* MB Transform type */
-
- int mb_has_coeffs = 1; /* last_flag */
- int dmv_x, dmv_y; /* Differential MV components */
- int val; /* temp values */
- int first_block = 1;
- int dst_idx, off;
- int pred_flag;
- int block_cbp = 0, pat, block_tt = 0;
- int idx_mbmode = 0;
-
- mquant = v->pq; /* Loosy initialization */
-
- idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_IF_MBMODE_VLC_BITS, 2);
- if (idx_mbmode <= 1) { // intra MB
- s->mb_intra = v->is_intra[s->mb_x] = 1;
- s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0;
- s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0;
- s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
- GET_MQUANT();
- s->current_picture.qscale_table[mb_pos] = mquant;
- /* Set DC scale - y and c use the same (not sure if necessary here) */
- s->y_dc_scale = s->y_dc_scale_table[mquant];
- s->c_dc_scale = s->c_dc_scale_table[mquant];
- v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
- mb_has_coeffs = idx_mbmode & 1;
- if (mb_has_coeffs)
- cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_ICBPCY_VLC_BITS, 2);
- dst_idx = 0;
- for (i = 0; i < 6; i++) {
- s->dc_val[0][s->block_index[i]] = 0;
- v->mb_type[0][s->block_index[i]] = 1;
- dst_idx += i >> 2;
- val = ((cbp >> (5 - i)) & 1);
- v->a_avail = v->c_avail = 0;
- if (i == 2 || i == 3 || !s->first_slice_line)
- v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
- if (i == 1 || i == 3 || s->mb_x)
- v->c_avail = v->mb_type[0][s->block_index[i] - 1];
-
- vc1_decode_intra_block(v, s->block[i], i, val, mquant,
- (i & 4) ? v->codingset2 : v->codingset);
- if ((i>3) && (s->flags & CODEC_FLAG_GRAY))
- continue;
- v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
- off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
- s->idsp.put_signed_pixels_clamped(s->block[i],
- s->dest[dst_idx] + off,
- (i & 4) ? s->uvlinesize
- : s->linesize);
- // TODO: loop filter
- }
- } else {
- s->mb_intra = v->is_intra[s->mb_x] = 0;
- s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16;
- for (i = 0; i < 6; i++) v->mb_type[0][s->block_index[i]] = 0;
- if (idx_mbmode <= 5) { // 1-MV
- dmv_x = dmv_y = pred_flag = 0;
- if (idx_mbmode & 1) {
- get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag);
- }
- vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0);
- vc1_mc_1mv(v, 0);
- mb_has_coeffs = !(idx_mbmode & 2);
- } else { // 4-MV
- v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
- for (i = 0; i < 6; i++) {
- if (i < 4) {
- dmv_x = dmv_y = pred_flag = 0;
- val = ((v->fourmvbp >> (3 - i)) & 1);
- if (val) {
- get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag);
- }
- vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0);
- vc1_mc_4mv_luma(v, i, 0, 0);
- } else if (i == 4)
- vc1_mc_4mv_chroma(v, 0);
- }
- mb_has_coeffs = idx_mbmode & 1;
- }
- if (mb_has_coeffs)
- cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
- if (cbp) {
- GET_MQUANT();
- }
- s->current_picture.qscale_table[mb_pos] = mquant;
- if (!v->ttmbf && cbp) {
- ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
- }
- dst_idx = 0;
- for (i = 0; i < 6; i++) {
- s->dc_val[0][s->block_index[i]] = 0;
- dst_idx += i >> 2;
- val = ((cbp >> (5 - i)) & 1);
- off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize;
- if (val) {
- pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
- first_block, s->dest[dst_idx] + off,
- (i & 4) ? s->uvlinesize : s->linesize,
- (i & 4) && (s->flags & CODEC_FLAG_GRAY),
- &block_tt);
- block_cbp |= pat << (i << 2);
- if (!v->ttmbf && ttmb < 8) ttmb = -1;
- first_block = 0;
- }
- }
- }
- if (s->mb_x == s->mb_width - 1)
- memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0]) * s->mb_stride);
- return 0;
-}
-
-/** Decode one B-frame MB (in Main profile)
- */
-static void vc1_decode_b_mb(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
- GetBitContext *gb = &s->gb;
- int i, j;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- int cbp = 0; /* cbp decoding stuff */
- int mqdiff, mquant; /* MB quantization */
- int ttmb = v->ttfrm; /* MB Transform type */
- int mb_has_coeffs = 0; /* last_flag */
- int index, index1; /* LUT indexes */
- int val, sign; /* temp values */
- int first_block = 1;
- int dst_idx, off;
- int skipped, direct;
- int dmv_x[2], dmv_y[2];
- int bmvtype = BMV_TYPE_BACKWARD;
-
- mquant = v->pq; /* lossy initialization */
- s->mb_intra = 0;
-
- if (v->dmb_is_raw)
- direct = get_bits1(gb);
- else
- direct = v->direct_mb_plane[mb_pos];
- if (v->skip_is_raw)
- skipped = get_bits1(gb);
- else
- skipped = v->s.mbskip_table[mb_pos];
-
- dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
- for (i = 0; i < 6; i++) {
- v->mb_type[0][s->block_index[i]] = 0;
- s->dc_val[0][s->block_index[i]] = 0;
- }
- s->current_picture.qscale_table[mb_pos] = 0;
-
- if (!direct) {
- if (!skipped) {
- GET_MVDATA(dmv_x[0], dmv_y[0]);
- dmv_x[1] = dmv_x[0];
- dmv_y[1] = dmv_y[0];
- }
- if (skipped || !s->mb_intra) {
- bmvtype = decode012(gb);
- switch (bmvtype) {
- case 0:
- bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
- break;
- case 1:
- bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
- break;
- case 2:
- bmvtype = BMV_TYPE_INTERPOLATED;
- dmv_x[0] = dmv_y[0] = 0;
- }
- }
- }
- for (i = 0; i < 6; i++)
- v->mb_type[0][s->block_index[i]] = s->mb_intra;
-
- if (skipped) {
- if (direct)
- bmvtype = BMV_TYPE_INTERPOLATED;
- vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
- vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
- return;
- }
- if (direct) {
- cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
- GET_MQUANT();
- s->mb_intra = 0;
- s->current_picture.qscale_table[mb_pos] = mquant;
- if (!v->ttmbf)
- ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
- dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
- vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
- vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
- } else {
- if (!mb_has_coeffs && !s->mb_intra) {
- /* no coded blocks - effectively skipped */
- vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
- vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
- return;
- }
- if (s->mb_intra && !mb_has_coeffs) {
- GET_MQUANT();
- s->current_picture.qscale_table[mb_pos] = mquant;
- s->ac_pred = get_bits1(gb);
- cbp = 0;
- vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
- } else {
- if (bmvtype == BMV_TYPE_INTERPOLATED) {
- GET_MVDATA(dmv_x[0], dmv_y[0]);
- if (!mb_has_coeffs) {
- /* interpolated skipped block */
- vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
- vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
- return;
- }
- }
- vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
- if (!s->mb_intra) {
- vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
- }
- if (s->mb_intra)
- s->ac_pred = get_bits1(gb);
- cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
- GET_MQUANT();
- s->current_picture.qscale_table[mb_pos] = mquant;
- if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
- ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
- }
- }
- dst_idx = 0;
- for (i = 0; i < 6; i++) {
- s->dc_val[0][s->block_index[i]] = 0;
- dst_idx += i >> 2;
- val = ((cbp >> (5 - i)) & 1);
- off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
- v->mb_type[0][s->block_index[i]] = s->mb_intra;
- if (s->mb_intra) {
- /* check if prediction blocks A and C are available */
- v->a_avail = v->c_avail = 0;
- if (i == 2 || i == 3 || !s->first_slice_line)
- v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
- if (i == 1 || i == 3 || s->mb_x)
- v->c_avail = v->mb_type[0][s->block_index[i] - 1];
-
- vc1_decode_intra_block(v, s->block[i], i, val, mquant,
- (i & 4) ? v->codingset2 : v->codingset);
- if ((i>3) && (s->flags & CODEC_FLAG_GRAY))
- continue;
- v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
- if (v->rangeredfrm)
- for (j = 0; j < 64; j++)
- s->block[i][j] <<= 1;
- s->idsp.put_signed_pixels_clamped(s->block[i],
- s->dest[dst_idx] + off,
- i & 4 ? s->uvlinesize
- : s->linesize);
- } else if (val) {
- vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
- first_block, s->dest[dst_idx] + off,
- (i & 4) ? s->uvlinesize : s->linesize,
- (i & 4) && (s->flags & CODEC_FLAG_GRAY), NULL);
- if (!v->ttmbf && ttmb < 8)
- ttmb = -1;
- first_block = 0;
- }
- }
-}
-
-/** Decode one B-frame MB (in interlaced field B picture)
- */
-static void vc1_decode_b_mb_intfi(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
- GetBitContext *gb = &s->gb;
- int i, j;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- int cbp = 0; /* cbp decoding stuff */
- int mqdiff, mquant; /* MB quantization */
- int ttmb = v->ttfrm; /* MB Transform type */
- int mb_has_coeffs = 0; /* last_flag */
- int val; /* temp value */
- int first_block = 1;
- int dst_idx, off;
- int fwd;
- int dmv_x[2], dmv_y[2], pred_flag[2];
- int bmvtype = BMV_TYPE_BACKWARD;
- int idx_mbmode, interpmvp;
-
- mquant = v->pq; /* Loosy initialization */
- s->mb_intra = 0;
-
- idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_IF_MBMODE_VLC_BITS, 2);
- if (idx_mbmode <= 1) { // intra MB
- s->mb_intra = v->is_intra[s->mb_x] = 1;
- s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
- s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
- s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
- GET_MQUANT();
- s->current_picture.qscale_table[mb_pos] = mquant;
- /* Set DC scale - y and c use the same (not sure if necessary here) */
- s->y_dc_scale = s->y_dc_scale_table[mquant];
- s->c_dc_scale = s->c_dc_scale_table[mquant];
- v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
- mb_has_coeffs = idx_mbmode & 1;
- if (mb_has_coeffs)
- cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_ICBPCY_VLC_BITS, 2);
- dst_idx = 0;
- for (i = 0; i < 6; i++) {
- s->dc_val[0][s->block_index[i]] = 0;
- dst_idx += i >> 2;
- val = ((cbp >> (5 - i)) & 1);
- v->mb_type[0][s->block_index[i]] = s->mb_intra;
- v->a_avail = v->c_avail = 0;
- if (i == 2 || i == 3 || !s->first_slice_line)
- v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
- if (i == 1 || i == 3 || s->mb_x)
- v->c_avail = v->mb_type[0][s->block_index[i] - 1];
-
- vc1_decode_intra_block(v, s->block[i], i, val, mquant,
- (i & 4) ? v->codingset2 : v->codingset);
- if ((i>3) && (s->flags & CODEC_FLAG_GRAY))
- continue;
- v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
- if (v->rangeredfrm)
- for (j = 0; j < 64; j++)
- s->block[i][j] <<= 1;
- off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
- s->idsp.put_signed_pixels_clamped(s->block[i],
- s->dest[dst_idx] + off,
- (i & 4) ? s->uvlinesize
- : s->linesize);
- // TODO: yet to perform loop filter
- }
- } else {
- s->mb_intra = v->is_intra[s->mb_x] = 0;
- s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16;
- for (i = 0; i < 6; i++) v->mb_type[0][s->block_index[i]] = 0;
- if (v->fmb_is_raw)
- fwd = v->forward_mb_plane[mb_pos] = get_bits1(gb);
- else
- fwd = v->forward_mb_plane[mb_pos];
- if (idx_mbmode <= 5) { // 1-MV
- dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
- pred_flag[0] = pred_flag[1] = 0;
- if (fwd)
- bmvtype = BMV_TYPE_FORWARD;
- else {
- bmvtype = decode012(gb);
- switch (bmvtype) {
- case 0:
- bmvtype = BMV_TYPE_BACKWARD;
- break;
- case 1:
- bmvtype = BMV_TYPE_DIRECT;
- break;
- case 2:
- bmvtype = BMV_TYPE_INTERPOLATED;
- interpmvp = get_bits1(gb);
- }
- }
- v->bmvtype = bmvtype;
- if (bmvtype != BMV_TYPE_DIRECT && idx_mbmode & 1) {
- get_mvdata_interlaced(v, &dmv_x[bmvtype == BMV_TYPE_BACKWARD], &dmv_y[bmvtype == BMV_TYPE_BACKWARD], &pred_flag[bmvtype == BMV_TYPE_BACKWARD]);
- }
- if (bmvtype == BMV_TYPE_INTERPOLATED && interpmvp) {
- get_mvdata_interlaced(v, &dmv_x[1], &dmv_y[1], &pred_flag[1]);
- }
- if (bmvtype == BMV_TYPE_DIRECT) {
- dmv_x[0] = dmv_y[0] = pred_flag[0] = 0;
- dmv_x[1] = dmv_y[1] = pred_flag[0] = 0;
- }
- vc1_pred_b_mv_intfi(v, 0, dmv_x, dmv_y, 1, pred_flag);
- vc1_b_mc(v, dmv_x, dmv_y, (bmvtype == BMV_TYPE_DIRECT), bmvtype);
- mb_has_coeffs = !(idx_mbmode & 2);
- } else { // 4-MV
- if (fwd)
- bmvtype = BMV_TYPE_FORWARD;
- v->bmvtype = bmvtype;
- v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
- for (i = 0; i < 6; i++) {
- if (i < 4) {
- dmv_x[0] = dmv_y[0] = pred_flag[0] = 0;
- dmv_x[1] = dmv_y[1] = pred_flag[1] = 0;
- val = ((v->fourmvbp >> (3 - i)) & 1);
- if (val) {
- get_mvdata_interlaced(v, &dmv_x[bmvtype == BMV_TYPE_BACKWARD],
- &dmv_y[bmvtype == BMV_TYPE_BACKWARD],
- &pred_flag[bmvtype == BMV_TYPE_BACKWARD]);
- }
- vc1_pred_b_mv_intfi(v, i, dmv_x, dmv_y, 0, pred_flag);
- vc1_mc_4mv_luma(v, i, bmvtype == BMV_TYPE_BACKWARD, 0);
- } else if (i == 4)
- vc1_mc_4mv_chroma(v, bmvtype == BMV_TYPE_BACKWARD);
- }
- mb_has_coeffs = idx_mbmode & 1;
- }
- if (mb_has_coeffs)
- cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
- if (cbp) {
- GET_MQUANT();
- }
- s->current_picture.qscale_table[mb_pos] = mquant;
- if (!v->ttmbf && cbp) {
- ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
- }
- dst_idx = 0;
- for (i = 0; i < 6; i++) {
- s->dc_val[0][s->block_index[i]] = 0;
- dst_idx += i >> 2;
- val = ((cbp >> (5 - i)) & 1);
- off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize;
- if (val) {
- vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
- first_block, s->dest[dst_idx] + off,
- (i & 4) ? s->uvlinesize : s->linesize,
- (i & 4) && (s->flags & CODEC_FLAG_GRAY), NULL);
- if (!v->ttmbf && ttmb < 8)
- ttmb = -1;
- first_block = 0;
- }
- }
- }
-}
-
-/** Decode one B-frame MB (in interlaced frame B picture)
- */
-static int vc1_decode_b_mb_intfr(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
- GetBitContext *gb = &s->gb;
- int i, j;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- int cbp = 0; /* cbp decoding stuff */
- int mqdiff, mquant; /* MB quantization */
- int ttmb = v->ttfrm; /* MB Transform type */
- int mvsw = 0; /* motion vector switch */
- int mb_has_coeffs = 1; /* last_flag */
- int dmv_x, dmv_y; /* Differential MV components */
- int val; /* temp value */
- int first_block = 1;
- int dst_idx, off;
- int skipped, direct, twomv = 0;
- int block_cbp = 0, pat, block_tt = 0;
- int idx_mbmode = 0, mvbp;
- int stride_y, fieldtx;
- int bmvtype = BMV_TYPE_BACKWARD;
- int dir, dir2;
-
- mquant = v->pq; /* Lossy initialization */
- s->mb_intra = 0;
- if (v->skip_is_raw)
- skipped = get_bits1(gb);
- else
- skipped = v->s.mbskip_table[mb_pos];
-
- if (!skipped) {
- idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2);
- if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) {
- twomv = 1;
- v->blk_mv_type[s->block_index[0]] = 1;
- v->blk_mv_type[s->block_index[1]] = 1;
- v->blk_mv_type[s->block_index[2]] = 1;
- v->blk_mv_type[s->block_index[3]] = 1;
- } else {
- v->blk_mv_type[s->block_index[0]] = 0;
- v->blk_mv_type[s->block_index[1]] = 0;
- v->blk_mv_type[s->block_index[2]] = 0;
- v->blk_mv_type[s->block_index[3]] = 0;
- }
- }
-
- if (v->dmb_is_raw)
- direct = get_bits1(gb);
- else
- direct = v->direct_mb_plane[mb_pos];
-
- if (direct) {
- s->mv[0][0][0] = s->current_picture.motion_val[0][s->block_index[0]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][0], v->bfraction, 0, s->quarter_sample);
- s->mv[0][0][1] = s->current_picture.motion_val[0][s->block_index[0]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][1], v->bfraction, 0, s->quarter_sample);
- s->mv[1][0][0] = s->current_picture.motion_val[1][s->block_index[0]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][0], v->bfraction, 1, s->quarter_sample);
- s->mv[1][0][1] = s->current_picture.motion_val[1][s->block_index[0]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][1], v->bfraction, 1, s->quarter_sample);
-
- if (twomv) {
- s->mv[0][2][0] = s->current_picture.motion_val[0][s->block_index[2]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][0], v->bfraction, 0, s->quarter_sample);
- s->mv[0][2][1] = s->current_picture.motion_val[0][s->block_index[2]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][1], v->bfraction, 0, s->quarter_sample);
- s->mv[1][2][0] = s->current_picture.motion_val[1][s->block_index[2]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][0], v->bfraction, 1, s->quarter_sample);
- s->mv[1][2][1] = s->current_picture.motion_val[1][s->block_index[2]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][1], v->bfraction, 1, s->quarter_sample);
-
- for (i = 1; i < 4; i += 2) {
- s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = s->mv[0][i-1][0];
- s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = s->mv[0][i-1][1];
- s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = s->mv[1][i-1][0];
- s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = s->mv[1][i-1][1];
- }
- } else {
- for (i = 1; i < 4; i++) {
- s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = s->mv[0][0][0];
- s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = s->mv[0][0][1];
- s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = s->mv[1][0][0];
- s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = s->mv[1][0][1];
- }
- }
- }
-
- if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB
- for (i = 0; i < 4; i++) {
- s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = 0;
- s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = 0;
- s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = 0;
- s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = 0;
- }
- s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
- s->mb_intra = v->is_intra[s->mb_x] = 1;
- for (i = 0; i < 6; i++)
- v->mb_type[0][s->block_index[i]] = 1;
- fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb);
- mb_has_coeffs = get_bits1(gb);
- if (mb_has_coeffs)
- cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
- v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
- GET_MQUANT();
- s->current_picture.qscale_table[mb_pos] = mquant;
- /* Set DC scale - y and c use the same (not sure if necessary here) */
- s->y_dc_scale = s->y_dc_scale_table[mquant];
- s->c_dc_scale = s->c_dc_scale_table[mquant];
- dst_idx = 0;
- for (i = 0; i < 6; i++) {
- s->dc_val[0][s->block_index[i]] = 0;
- dst_idx += i >> 2;
- val = ((cbp >> (5 - i)) & 1);
- v->mb_type[0][s->block_index[i]] = s->mb_intra;
- v->a_avail = v->c_avail = 0;
- if (i == 2 || i == 3 || !s->first_slice_line)
- v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
- if (i == 1 || i == 3 || s->mb_x)
- v->c_avail = v->mb_type[0][s->block_index[i] - 1];
-
- vc1_decode_intra_block(v, s->block[i], i, val, mquant,
- (i & 4) ? v->codingset2 : v->codingset);
- if (i > 3 && (s->flags & CODEC_FLAG_GRAY))
- continue;
- v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
- if (i < 4) {
- stride_y = s->linesize << fieldtx;
- off = (fieldtx) ? ((i & 1) * 8) + ((i & 2) >> 1) * s->linesize : (i & 1) * 8 + 4 * (i & 2) * s->linesize;
- } else {
- stride_y = s->uvlinesize;
- off = 0;
- }
- s->idsp.put_signed_pixels_clamped(s->block[i],
- s->dest[dst_idx] + off,
- stride_y);
- }
- } else {
- s->mb_intra = v->is_intra[s->mb_x] = 0;
- if (!direct) {
- if (skipped || !s->mb_intra) {
- bmvtype = decode012(gb);
- switch (bmvtype) {
- case 0:
- bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
- break;
- case 1:
- bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
- break;
- case 2:
- bmvtype = BMV_TYPE_INTERPOLATED;
- }
- }
-
- if (twomv && bmvtype != BMV_TYPE_INTERPOLATED)
- mvsw = get_bits1(gb);
- }
-
- if (!skipped) { // inter MB
- mb_has_coeffs = ff_vc1_mbmode_intfrp[0][idx_mbmode][3];
- if (mb_has_coeffs)
- cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
- if (!direct) {
- if (bmvtype == BMV_TYPE_INTERPOLATED && twomv) {
- v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
- } else if (bmvtype == BMV_TYPE_INTERPOLATED || twomv) {
- v->twomvbp = get_vlc2(gb, v->twomvbp_vlc->table, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
- }
- }
-
- for (i = 0; i < 6; i++)
- v->mb_type[0][s->block_index[i]] = 0;
- fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[0][idx_mbmode][1];
- /* for all motion vector read MVDATA and motion compensate each block */
- dst_idx = 0;
- if (direct) {
- if (twomv) {
- for (i = 0; i < 4; i++) {
- vc1_mc_4mv_luma(v, i, 0, 0);
- vc1_mc_4mv_luma(v, i, 1, 1);
- }
- vc1_mc_4mv_chroma4(v, 0, 0, 0);
- vc1_mc_4mv_chroma4(v, 1, 1, 1);
- } else {
- vc1_mc_1mv(v, 0);
- vc1_interp_mc(v);
- }
- } else if (twomv && bmvtype == BMV_TYPE_INTERPOLATED) {
- mvbp = v->fourmvbp;
- for (i = 0; i < 4; i++) {
- dir = i==1 || i==3;
- dmv_x = dmv_y = 0;
- val = ((mvbp >> (3 - i)) & 1);
- if (val)
- get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
- j = i > 1 ? 2 : 0;
- vc1_pred_mv_intfr(v, j, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir);
- vc1_mc_4mv_luma(v, j, dir, dir);
- vc1_mc_4mv_luma(v, j+1, dir, dir);
- }
-
- vc1_mc_4mv_chroma4(v, 0, 0, 0);
- vc1_mc_4mv_chroma4(v, 1, 1, 1);
- } else if (bmvtype == BMV_TYPE_INTERPOLATED) {
- mvbp = v->twomvbp;
- dmv_x = dmv_y = 0;
- if (mvbp & 2)
- get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
-
- vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0);
- vc1_mc_1mv(v, 0);
-
- dmv_x = dmv_y = 0;
- if (mvbp & 1)
- get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
-
- vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 1);
- vc1_interp_mc(v);
- } else if (twomv) {
- dir = bmvtype == BMV_TYPE_BACKWARD;
- dir2 = dir;
- if (mvsw)
- dir2 = !dir;
- mvbp = v->twomvbp;
- dmv_x = dmv_y = 0;
- if (mvbp & 2)
- get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
- vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir);
-
- dmv_x = dmv_y = 0;
- if (mvbp & 1)
- get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
- vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir2);
-
- if (mvsw) {
- for (i = 0; i < 2; i++) {
- s->mv[dir][i+2][0] = s->mv[dir][i][0] = s->current_picture.motion_val[dir][s->block_index[i+2]][0] = s->current_picture.motion_val[dir][s->block_index[i]][0];
- s->mv[dir][i+2][1] = s->mv[dir][i][1] = s->current_picture.motion_val[dir][s->block_index[i+2]][1] = s->current_picture.motion_val[dir][s->block_index[i]][1];
- s->mv[dir2][i+2][0] = s->mv[dir2][i][0] = s->current_picture.motion_val[dir2][s->block_index[i]][0] = s->current_picture.motion_val[dir2][s->block_index[i+2]][0];
- s->mv[dir2][i+2][1] = s->mv[dir2][i][1] = s->current_picture.motion_val[dir2][s->block_index[i]][1] = s->current_picture.motion_val[dir2][s->block_index[i+2]][1];
- }
- } else {
- vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, v->mb_type[0], !dir);
- vc1_pred_mv_intfr(v, 2, 0, 0, 2, v->range_x, v->range_y, v->mb_type[0], !dir);
- }
-
- vc1_mc_4mv_luma(v, 0, dir, 0);
- vc1_mc_4mv_luma(v, 1, dir, 0);
- vc1_mc_4mv_luma(v, 2, dir2, 0);
- vc1_mc_4mv_luma(v, 3, dir2, 0);
- vc1_mc_4mv_chroma4(v, dir, dir2, 0);
- } else {
- dir = bmvtype == BMV_TYPE_BACKWARD;
-
- mvbp = ff_vc1_mbmode_intfrp[0][idx_mbmode][2];
- dmv_x = dmv_y = 0;
- if (mvbp)
- get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
-
- vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], dir);
- v->blk_mv_type[s->block_index[0]] = 1;
- v->blk_mv_type[s->block_index[1]] = 1;
- v->blk_mv_type[s->block_index[2]] = 1;
- v->blk_mv_type[s->block_index[3]] = 1;
- vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, 0, !dir);
- for (i = 0; i < 2; i++) {
- s->mv[!dir][i+2][0] = s->mv[!dir][i][0] = s->current_picture.motion_val[!dir][s->block_index[i+2]][0] = s->current_picture.motion_val[!dir][s->block_index[i]][0];
- s->mv[!dir][i+2][1] = s->mv[!dir][i][1] = s->current_picture.motion_val[!dir][s->block_index[i+2]][1] = s->current_picture.motion_val[!dir][s->block_index[i]][1];
- }
- vc1_mc_1mv(v, dir);
- }
-
- if (cbp)
- GET_MQUANT(); // p. 227
- s->current_picture.qscale_table[mb_pos] = mquant;
- if (!v->ttmbf && cbp)
- ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
- for (i = 0; i < 6; i++) {
- s->dc_val[0][s->block_index[i]] = 0;
- dst_idx += i >> 2;
- val = ((cbp >> (5 - i)) & 1);
- if (!fieldtx)
- off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
- else
- off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize));
- if (val) {
- pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
- first_block, s->dest[dst_idx] + off,
- (i & 4) ? s->uvlinesize : (s->linesize << fieldtx),
- (i & 4) && (s->flags & CODEC_FLAG_GRAY), &block_tt);
- block_cbp |= pat << (i << 2);
- if (!v->ttmbf && ttmb < 8)
- ttmb = -1;
- first_block = 0;
- }
- }
-
- } else { // skipped
- dir = 0;
- for (i = 0; i < 6; i++) {
- v->mb_type[0][s->block_index[i]] = 0;
- s->dc_val[0][s->block_index[i]] = 0;
- }
- s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
- s->current_picture.qscale_table[mb_pos] = 0;
- v->blk_mv_type[s->block_index[0]] = 0;
- v->blk_mv_type[s->block_index[1]] = 0;
- v->blk_mv_type[s->block_index[2]] = 0;
- v->blk_mv_type[s->block_index[3]] = 0;
-
- if (!direct) {
- if (bmvtype == BMV_TYPE_INTERPOLATED) {
- vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0);
- vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 1);
- } else {
- dir = bmvtype == BMV_TYPE_BACKWARD;
- vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], dir);
- if (mvsw) {
- int dir2 = dir;
- if (mvsw)
- dir2 = !dir;
- for (i = 0; i < 2; i++) {
- s->mv[dir][i+2][0] = s->mv[dir][i][0] = s->current_picture.motion_val[dir][s->block_index[i+2]][0] = s->current_picture.motion_val[dir][s->block_index[i]][0];
- s->mv[dir][i+2][1] = s->mv[dir][i][1] = s->current_picture.motion_val[dir][s->block_index[i+2]][1] = s->current_picture.motion_val[dir][s->block_index[i]][1];
- s->mv[dir2][i+2][0] = s->mv[dir2][i][0] = s->current_picture.motion_val[dir2][s->block_index[i]][0] = s->current_picture.motion_val[dir2][s->block_index[i+2]][0];
- s->mv[dir2][i+2][1] = s->mv[dir2][i][1] = s->current_picture.motion_val[dir2][s->block_index[i]][1] = s->current_picture.motion_val[dir2][s->block_index[i+2]][1];
- }
- } else {
- v->blk_mv_type[s->block_index[0]] = 1;
- v->blk_mv_type[s->block_index[1]] = 1;
- v->blk_mv_type[s->block_index[2]] = 1;
- v->blk_mv_type[s->block_index[3]] = 1;
- vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, 0, !dir);
- for (i = 0; i < 2; i++) {
- s->mv[!dir][i+2][0] = s->mv[!dir][i][0] = s->current_picture.motion_val[!dir][s->block_index[i+2]][0] = s->current_picture.motion_val[!dir][s->block_index[i]][0];
- s->mv[!dir][i+2][1] = s->mv[!dir][i][1] = s->current_picture.motion_val[!dir][s->block_index[i+2]][1] = s->current_picture.motion_val[!dir][s->block_index[i]][1];
- }
- }
- }
- }
-
- vc1_mc_1mv(v, dir);
- if (direct || bmvtype == BMV_TYPE_INTERPOLATED) {
- vc1_interp_mc(v);
- }
- }
- }
- if (s->mb_x == s->mb_width - 1)
- memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0]) * s->mb_stride);
- v->cbp[s->mb_x] = block_cbp;
- v->ttblk[s->mb_x] = block_tt;
- return 0;
-}
-
-/** Decode blocks of I-frame
- */
-static void vc1_decode_i_blocks(VC1Context *v)
-{
- int k, j;
- MpegEncContext *s = &v->s;
- int cbp, val;
- uint8_t *coded_val;
- int mb_pos;
-
- /* select codingmode used for VLC tables selection */
- switch (v->y_ac_table_index) {
- case 0:
- v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
- break;
- case 1:
- v->codingset = CS_HIGH_MOT_INTRA;
- break;
- case 2:
- v->codingset = CS_MID_RATE_INTRA;
- break;
- }
-
- switch (v->c_ac_table_index) {
- case 0:
- v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
- break;
- case 1:
- v->codingset2 = CS_HIGH_MOT_INTER;
- break;
- case 2:
- v->codingset2 = CS_MID_RATE_INTER;
- break;
- }
-
- /* Set DC scale - y and c use the same */
- s->y_dc_scale = s->y_dc_scale_table[v->pq];
- s->c_dc_scale = s->c_dc_scale_table[v->pq];
-
- //do frame decode
- s->mb_x = s->mb_y = 0;
- s->mb_intra = 1;
- s->first_slice_line = 1;
- for (s->mb_y = 0; s->mb_y < s->end_mb_y; s->mb_y++) {
- s->mb_x = 0;
- init_block_index(v);
- for (; s->mb_x < v->end_mb_x; s->mb_x++) {
- uint8_t *dst[6];
- ff_update_block_index(s);
- dst[0] = s->dest[0];
- dst[1] = dst[0] + 8;
- dst[2] = s->dest[0] + s->linesize * 8;
- dst[3] = dst[2] + 8;
- dst[4] = s->dest[1];
- dst[5] = s->dest[2];
- s->bdsp.clear_blocks(s->block[0]);
- mb_pos = s->mb_x + s->mb_y * s->mb_width;
- s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
- s->current_picture.qscale_table[mb_pos] = v->pq;
- s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
- s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
-
- // do actual MB decoding and displaying
- cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
- v->s.ac_pred = get_bits1(&v->s.gb);
-
- for (k = 0; k < 6; k++) {
- val = ((cbp >> (5 - k)) & 1);
-
- if (k < 4) {
- int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
- val = val ^ pred;
- *coded_val = val;
- }
- cbp |= val << (5 - k);
-
- vc1_decode_i_block(v, s->block[k], k, val, (k < 4) ? v->codingset : v->codingset2);
-
- if (k > 3 && (s->flags & CODEC_FLAG_GRAY))
- continue;
- v->vc1dsp.vc1_inv_trans_8x8(s->block[k]);
- if (v->pq >= 9 && v->overlap) {
- if (v->rangeredfrm)
- for (j = 0; j < 64; j++)
- s->block[k][j] <<= 1;
- s->idsp.put_signed_pixels_clamped(s->block[k], dst[k],
- k & 4 ? s->uvlinesize
- : s->linesize);
- } else {
- if (v->rangeredfrm)
- for (j = 0; j < 64; j++)
- s->block[k][j] = (s->block[k][j] - 64) << 1;
- s->idsp.put_pixels_clamped(s->block[k], dst[k],
- k & 4 ? s->uvlinesize
- : s->linesize);
- }
- }
-
- if (v->pq >= 9 && v->overlap) {
- if (s->mb_x) {
- v->vc1dsp.vc1_h_overlap(s->dest[0], s->linesize);
- v->vc1dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
- if (!(s->flags & CODEC_FLAG_GRAY)) {
- v->vc1dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
- v->vc1dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
- }
- }
- v->vc1dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
- v->vc1dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
- if (!s->first_slice_line) {
- v->vc1dsp.vc1_v_overlap(s->dest[0], s->linesize);
- v->vc1dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
- if (!(s->flags & CODEC_FLAG_GRAY)) {
- v->vc1dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
- v->vc1dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
- }
- }
- v->vc1dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
- v->vc1dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
- }
- if (v->s.loop_filter) vc1_loop_filter_iblk(v, v->pq);
-
- if (get_bits_count(&s->gb) > v->bits) {
- ff_er_add_slice(&s->er, 0, 0, s->mb_x, s->mb_y, ER_MB_ERROR);
- av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n",
- get_bits_count(&s->gb), v->bits);
- return;
- }
- }
- if (!v->s.loop_filter)
- ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16);
- else if (s->mb_y)
- ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16);
-
- s->first_slice_line = 0;
- }
- if (v->s.loop_filter)
- ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16);
-
- /* This is intentionally mb_height and not end_mb_y - unlike in advanced
- * profile, these only differ are when decoding MSS2 rectangles. */
- ff_er_add_slice(&s->er, 0, 0, s->mb_width - 1, s->mb_height - 1, ER_MB_END);
-}
-
-/** Decode blocks of I-frame for advanced profile
- */
-static void vc1_decode_i_blocks_adv(VC1Context *v)
-{
- int k;
- MpegEncContext *s = &v->s;
- int cbp, val;
- uint8_t *coded_val;
- int mb_pos;
- int mquant = v->pq;
- int mqdiff;
- GetBitContext *gb = &s->gb;
-
- /* select codingmode used for VLC tables selection */
- switch (v->y_ac_table_index) {
- case 0:
- v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
- break;
- case 1:
- v->codingset = CS_HIGH_MOT_INTRA;
- break;
- case 2:
- v->codingset = CS_MID_RATE_INTRA;
- break;
- }
-
- switch (v->c_ac_table_index) {
- case 0:
- v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
- break;
- case 1:
- v->codingset2 = CS_HIGH_MOT_INTER;
- break;
- case 2:
- v->codingset2 = CS_MID_RATE_INTER;
- break;
- }
-
- // do frame decode
- s->mb_x = s->mb_y = 0;
- s->mb_intra = 1;
- s->first_slice_line = 1;
- s->mb_y = s->start_mb_y;
- if (s->start_mb_y) {
- s->mb_x = 0;
- init_block_index(v);
- memset(&s->coded_block[s->block_index[0] - s->b8_stride], 0,
- (1 + s->b8_stride) * sizeof(*s->coded_block));
- }
- for (; s->mb_y < s->end_mb_y; s->mb_y++) {
- s->mb_x = 0;
- init_block_index(v);
- for (;s->mb_x < s->mb_width; s->mb_x++) {
- int16_t (*block)[64] = v->block[v->cur_blk_idx];
- ff_update_block_index(s);
- s->bdsp.clear_blocks(block[0]);
- mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
- s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0;
- s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0;
-
- // do actual MB decoding and displaying
- if (v->fieldtx_is_raw)
- v->fieldtx_plane[mb_pos] = get_bits1(&v->s.gb);
- cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
- if ( v->acpred_is_raw)
- v->s.ac_pred = get_bits1(&v->s.gb);
- else
- v->s.ac_pred = v->acpred_plane[mb_pos];
-
- if (v->condover == CONDOVER_SELECT && v->overflg_is_raw)
- v->over_flags_plane[mb_pos] = get_bits1(&v->s.gb);
-
- GET_MQUANT();
-
- s->current_picture.qscale_table[mb_pos] = mquant;
- /* Set DC scale - y and c use the same */
- s->y_dc_scale = s->y_dc_scale_table[mquant];
- s->c_dc_scale = s->c_dc_scale_table[mquant];
-
- for (k = 0; k < 6; k++) {
- val = ((cbp >> (5 - k)) & 1);
-
- if (k < 4) {
- int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
- val = val ^ pred;
- *coded_val = val;
- }
- cbp |= val << (5 - k);
-
- v->a_avail = !s->first_slice_line || (k == 2 || k == 3);
- v->c_avail = !!s->mb_x || (k == 1 || k == 3);
-
- vc1_decode_i_block_adv(v, block[k], k, val,
- (k < 4) ? v->codingset : v->codingset2, mquant);
-
- if (k > 3 && (s->flags & CODEC_FLAG_GRAY))
- continue;
- v->vc1dsp.vc1_inv_trans_8x8(block[k]);
- }
-
- vc1_smooth_overlap_filter_iblk(v);
- vc1_put_signed_blocks_clamped(v);
- if (v->s.loop_filter) vc1_loop_filter_iblk_delayed(v, v->pq);
-
- if (get_bits_count(&s->gb) > v->bits) {
- // TODO: may need modification to handle slice coding
- ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
- av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n",
- get_bits_count(&s->gb), v->bits);
- return;
- }
- }
- if (!v->s.loop_filter)
- ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16);
- else if (s->mb_y)
- ff_mpeg_draw_horiz_band(s, (s->mb_y-1) * 16, 16);
- s->first_slice_line = 0;
- }
-
- /* raw bottom MB row */
- s->mb_x = 0;
- init_block_index(v);
-
- for (;s->mb_x < s->mb_width; s->mb_x++) {
- ff_update_block_index(s);
- vc1_put_signed_blocks_clamped(v);
- if (v->s.loop_filter)
- vc1_loop_filter_iblk_delayed(v, v->pq);
- }
- if (v->s.loop_filter)
- ff_mpeg_draw_horiz_band(s, (s->end_mb_y-1)*16, 16);
- ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
- (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
-}
-
-static void vc1_decode_p_blocks(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
- int apply_loop_filter;
-
- /* select codingmode used for VLC tables selection */
- switch (v->c_ac_table_index) {
- case 0:
- v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
- break;
- case 1:
- v->codingset = CS_HIGH_MOT_INTRA;
- break;
- case 2:
- v->codingset = CS_MID_RATE_INTRA;
- break;
- }
-
- switch (v->c_ac_table_index) {
- case 0:
- v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
- break;
- case 1:
- v->codingset2 = CS_HIGH_MOT_INTER;
- break;
- case 2:
- v->codingset2 = CS_MID_RATE_INTER;
- break;
- }
-
- apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY) &&
- v->fcm == PROGRESSIVE;
- s->first_slice_line = 1;
- memset(v->cbp_base, 0, sizeof(v->cbp_base[0])*2*s->mb_stride);
- for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
- s->mb_x = 0;
- init_block_index(v);
- for (; s->mb_x < s->mb_width; s->mb_x++) {
- ff_update_block_index(s);
-
- if (v->fcm == ILACE_FIELD)
- vc1_decode_p_mb_intfi(v);
- else if (v->fcm == ILACE_FRAME)
- vc1_decode_p_mb_intfr(v);
- else vc1_decode_p_mb(v);
- if (s->mb_y != s->start_mb_y && apply_loop_filter)
- vc1_apply_p_loop_filter(v);
- if (get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
- // TODO: may need modification to handle slice coding
- ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
- av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n",
- get_bits_count(&s->gb), v->bits, s->mb_x, s->mb_y);
- return;
- }
- }
- memmove(v->cbp_base, v->cbp, sizeof(v->cbp_base[0]) * s->mb_stride);
- memmove(v->ttblk_base, v->ttblk, sizeof(v->ttblk_base[0]) * s->mb_stride);
- memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0]) * s->mb_stride);
- memmove(v->luma_mv_base, v->luma_mv, sizeof(v->luma_mv_base[0]) * s->mb_stride);
- if (s->mb_y != s->start_mb_y) ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16);
- s->first_slice_line = 0;
- }
- if (apply_loop_filter) {
- s->mb_x = 0;
- init_block_index(v);
- for (; s->mb_x < s->mb_width; s->mb_x++) {
- ff_update_block_index(s);
- vc1_apply_p_loop_filter(v);
- }
- }
- if (s->end_mb_y >= s->start_mb_y)
- ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16);
- ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
- (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
-}
-
-static void vc1_decode_b_blocks(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
-
- /* select codingmode used for VLC tables selection */
- switch (v->c_ac_table_index) {
- case 0:
- v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
- break;
- case 1:
- v->codingset = CS_HIGH_MOT_INTRA;
- break;
- case 2:
- v->codingset = CS_MID_RATE_INTRA;
- break;
- }
-
- switch (v->c_ac_table_index) {
- case 0:
- v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
- break;
- case 1:
- v->codingset2 = CS_HIGH_MOT_INTER;
- break;
- case 2:
- v->codingset2 = CS_MID_RATE_INTER;
- break;
- }
-
- s->first_slice_line = 1;
- for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
- s->mb_x = 0;
- init_block_index(v);
- for (; s->mb_x < s->mb_width; s->mb_x++) {
- ff_update_block_index(s);
-
- if (v->fcm == ILACE_FIELD)
- vc1_decode_b_mb_intfi(v);
- else if (v->fcm == ILACE_FRAME)
- vc1_decode_b_mb_intfr(v);
- else
- vc1_decode_b_mb(v);
- if (get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
- // TODO: may need modification to handle slice coding
- ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
- av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n",
- get_bits_count(&s->gb), v->bits, s->mb_x, s->mb_y);
- return;
- }
- if (v->s.loop_filter) vc1_loop_filter_iblk(v, v->pq);
- }
- if (!v->s.loop_filter)
- ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16);
- else if (s->mb_y)
- ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16);
- s->first_slice_line = 0;
- }
- if (v->s.loop_filter)
- ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16);
- ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
- (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
-}
-
-static void vc1_decode_skip_blocks(VC1Context *v)
-{
- MpegEncContext *s = &v->s;
-
- if (!v->s.last_picture.f->data[0])
- return;
-
- ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_width - 1, s->end_mb_y - 1, ER_MB_END);
- s->first_slice_line = 1;
- for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
- s->mb_x = 0;
- init_block_index(v);
- ff_update_block_index(s);
- memcpy(s->dest[0], s->last_picture.f->data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
- memcpy(s->dest[1], s->last_picture.f->data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
- memcpy(s->dest[2], s->last_picture.f->data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
- ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16);
- s->first_slice_line = 0;
- }
- s->pict_type = AV_PICTURE_TYPE_P;
-}
-
-void ff_vc1_decode_blocks(VC1Context *v)
-{
-
- v->s.esc3_level_length = 0;
- if (v->x8_type) {
- ff_intrax8_decode_picture(&v->x8, 2*v->pq + v->halfpq, v->pq * !v->pquantizer);
- } else {
- v->cur_blk_idx = 0;
- v->left_blk_idx = -1;
- v->topleft_blk_idx = 1;
- v->top_blk_idx = 2;
- switch (v->s.pict_type) {
- case AV_PICTURE_TYPE_I:
- if (v->profile == PROFILE_ADVANCED)
- vc1_decode_i_blocks_adv(v);
- else
- vc1_decode_i_blocks(v);
- break;
- case AV_PICTURE_TYPE_P:
- if (v->p_frame_skipped)
- vc1_decode_skip_blocks(v);
- else
- vc1_decode_p_blocks(v);
- break;
- case AV_PICTURE_TYPE_B:
- if (v->bi_type) {
- if (v->profile == PROFILE_ADVANCED)
- vc1_decode_i_blocks_adv(v);
- else
- vc1_decode_i_blocks(v);
- } else
- vc1_decode_b_blocks(v);
- break;
- }
- }
-}
#if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
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