FFmpeg
vc1dec.c
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1 /*
2  * VC-1 and WMV3 decoder
3  * Copyright (c) 2011 Mashiat Sarker Shakkhar
4  * Copyright (c) 2006-2007 Konstantin Shishkov
5  * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 /**
25  * @file
26  * VC-1 and WMV3 decoder
27  */
28 
29 #include "config_components.h"
30 
31 #include "avcodec.h"
32 #include "blockdsp.h"
33 #include "codec_internal.h"
34 #include "decode.h"
35 #include "get_bits.h"
36 #include "h263dec.h"
37 #include "hwaccel_internal.h"
38 #include "hwconfig.h"
39 #include "mpeg_er.h"
40 #include "mpegvideo.h"
41 #include "mpegvideodec.h"
42 #include "msmpeg4_vc1_data.h"
43 #include "profiles.h"
44 #include "simple_idct.h"
45 #include "vc1.h"
46 #include "vc1data.h"
47 #include "vc1_vlc_data.h"
48 #include "libavutil/attributes.h"
49 #include "libavutil/avassert.h"
50 #include "libavutil/imgutils.h"
51 #include "libavutil/thread.h"
52 
53 
54 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
55 
56 typedef struct SpriteData {
57  /**
58  * Transform coefficients for both sprites in 16.16 fixed point format,
59  * in the order they appear in the bitstream:
60  * x scale
61  * rotation 1 (unused)
62  * x offset
63  * rotation 2 (unused)
64  * y scale
65  * y offset
66  * alpha
67  */
68  int coefs[2][7];
69 
70  int effect_type, effect_flag;
71  int effect_pcount1, effect_pcount2; ///< amount of effect parameters stored in effect_params
72  int effect_params1[15], effect_params2[10]; ///< effect parameters in 16.16 fixed point format
73 } SpriteData;
74 
75 static inline int get_fp_val(GetBitContext* gb)
76 {
77  return (get_bits_long(gb, 30) - (1 << 29)) << 1;
78 }
79 
80 static void vc1_sprite_parse_transform(GetBitContext* gb, int c[7])
81 {
82  c[1] = c[3] = 0;
83 
84  switch (get_bits(gb, 2)) {
85  case 0:
86  c[0] = 1 << 16;
87  c[2] = get_fp_val(gb);
88  c[4] = 1 << 16;
89  break;
90  case 1:
91  c[0] = c[4] = get_fp_val(gb);
92  c[2] = get_fp_val(gb);
93  break;
94  case 2:
95  c[0] = get_fp_val(gb);
96  c[2] = get_fp_val(gb);
97  c[4] = get_fp_val(gb);
98  break;
99  case 3:
100  c[0] = get_fp_val(gb);
101  c[1] = get_fp_val(gb);
102  c[2] = get_fp_val(gb);
103  c[3] = get_fp_val(gb);
104  c[4] = get_fp_val(gb);
105  break;
106  }
107  c[5] = get_fp_val(gb);
108  if (get_bits1(gb))
109  c[6] = get_fp_val(gb);
110  else
111  c[6] = 1 << 16;
112 }
113 
114 static int vc1_parse_sprites(VC1Context *v, GetBitContext* gb, SpriteData* sd)
115 {
116  AVCodecContext *avctx = v->s.avctx;
117  int sprite, i;
118 
119  for (sprite = 0; sprite <= v->two_sprites; sprite++) {
120  vc1_sprite_parse_transform(gb, sd->coefs[sprite]);
121  if (sd->coefs[sprite][1] || sd->coefs[sprite][3])
122  avpriv_request_sample(avctx, "Non-zero rotation coefficients");
123  av_log(avctx, AV_LOG_DEBUG, sprite ? "S2:" : "S1:");
124  for (i = 0; i < 7; i++)
125  av_log(avctx, AV_LOG_DEBUG, " %d.%.3d",
126  sd->coefs[sprite][i] / (1<<16),
127  (abs(sd->coefs[sprite][i]) & 0xFFFF) * 1000 / (1 << 16));
128  av_log(avctx, AV_LOG_DEBUG, "\n");
129  }
130 
131  skip_bits(gb, 2);
132  if (sd->effect_type = get_bits_long(gb, 30)) {
133  switch (sd->effect_pcount1 = get_bits(gb, 4)) {
134  case 7:
135  vc1_sprite_parse_transform(gb, sd->effect_params1);
136  break;
137  case 14:
138  vc1_sprite_parse_transform(gb, sd->effect_params1);
139  vc1_sprite_parse_transform(gb, sd->effect_params1 + 7);
140  break;
141  default:
142  for (i = 0; i < sd->effect_pcount1; i++)
143  sd->effect_params1[i] = get_fp_val(gb);
144  }
145  if (sd->effect_type != 13 || sd->effect_params1[0] != sd->coefs[0][6]) {
146  // effect 13 is simple alpha blending and matches the opacity above
147  av_log(avctx, AV_LOG_DEBUG, "Effect: %d; params: ", sd->effect_type);
148  for (i = 0; i < sd->effect_pcount1; i++)
149  av_log(avctx, AV_LOG_DEBUG, " %d.%.2d",
150  sd->effect_params1[i] / (1 << 16),
151  (abs(sd->effect_params1[i]) & 0xFFFF) * 1000 / (1 << 16));
152  av_log(avctx, AV_LOG_DEBUG, "\n");
153  }
154 
155  sd->effect_pcount2 = get_bits(gb, 16);
156  if (sd->effect_pcount2 > 10) {
157  av_log(avctx, AV_LOG_ERROR, "Too many effect parameters\n");
158  return AVERROR_INVALIDDATA;
159  } else if (sd->effect_pcount2) {
160  i = -1;
161  av_log(avctx, AV_LOG_DEBUG, "Effect params 2: ");
162  while (++i < sd->effect_pcount2) {
163  sd->effect_params2[i] = get_fp_val(gb);
164  av_log(avctx, AV_LOG_DEBUG, " %d.%.2d",
165  sd->effect_params2[i] / (1 << 16),
166  (abs(sd->effect_params2[i]) & 0xFFFF) * 1000 / (1 << 16));
167  }
168  av_log(avctx, AV_LOG_DEBUG, "\n");
169  }
170  }
171  if (sd->effect_flag = get_bits1(gb))
172  av_log(avctx, AV_LOG_DEBUG, "Effect flag set\n");
173 
174  if (get_bits_count(gb) >= gb->size_in_bits +
175  (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE ? 64 : 0)) {
176  av_log(avctx, AV_LOG_ERROR, "Buffer overrun\n");
177  return AVERROR_INVALIDDATA;
178  }
179  if (get_bits_count(gb) < gb->size_in_bits - 8)
180  av_log(avctx, AV_LOG_WARNING, "Buffer not fully read\n");
181 
182  return 0;
183 }
184 
185 static void vc1_draw_sprites(VC1Context *v, SpriteData* sd)
186 {
187  int i, plane, row, sprite;
188  int sr_cache[2][2] = { { -1, -1 }, { -1, -1 } };
189  uint8_t* src_h[2][2];
190  int xoff[2], xadv[2], yoff[2], yadv[2], alpha;
191  int ysub[2];
192  MpegEncContext *s = &v->s;
193 
194  for (i = 0; i <= v->two_sprites; i++) {
195  xoff[i] = av_clip(sd->coefs[i][2], 0, v->sprite_width-1 << 16);
196  xadv[i] = sd->coefs[i][0];
197  if (xadv[i] != 1<<16 || (v->sprite_width << 16) - (v->output_width << 16) - xoff[i])
198  xadv[i] = av_clip(xadv[i], 0, ((v->sprite_width<<16) - xoff[i] - 1) / v->output_width);
199 
200  yoff[i] = av_clip(sd->coefs[i][5], 0, v->sprite_height-1 << 16);
201  yadv[i] = av_clip(sd->coefs[i][4], 0, ((v->sprite_height << 16) - yoff[i]) / v->output_height);
202  }
203  alpha = av_clip_uint16(sd->coefs[1][6]);
204 
205  for (plane = 0; plane < (CONFIG_GRAY && s->avctx->flags & AV_CODEC_FLAG_GRAY ? 1 : 3); plane++) {
206  int width = v->output_width>>!!plane;
207 
208  for (row = 0; row < v->output_height>>!!plane; row++) {
209  uint8_t *dst = v->sprite_output_frame->data[plane] +
210  v->sprite_output_frame->linesize[plane] * row;
211 
212  for (sprite = 0; sprite <= v->two_sprites; sprite++) {
213  uint8_t *iplane = s->current_picture.f->data[plane];
214  int iline = s->current_picture.f->linesize[plane];
215  int ycoord = yoff[sprite] + yadv[sprite] * row;
216  int yline = ycoord >> 16;
217  int next_line;
218  ysub[sprite] = ycoord & 0xFFFF;
219  if (sprite) {
220  iplane = s->last_picture.f->data[plane];
221  iline = s->last_picture.f->linesize[plane];
222  }
223  next_line = FFMIN(yline + 1, (v->sprite_height >> !!plane) - 1) * iline;
224  if (!(xoff[sprite] & 0xFFFF) && xadv[sprite] == 1 << 16) {
225  src_h[sprite][0] = iplane + (xoff[sprite] >> 16) + yline * iline;
226  if (ysub[sprite])
227  src_h[sprite][1] = iplane + (xoff[sprite] >> 16) + next_line;
228  } else {
229  if (sr_cache[sprite][0] != yline) {
230  if (sr_cache[sprite][1] == yline) {
231  FFSWAP(uint8_t*, v->sr_rows[sprite][0], v->sr_rows[sprite][1]);
232  FFSWAP(int, sr_cache[sprite][0], sr_cache[sprite][1]);
233  } else {
234  v->vc1dsp.sprite_h(v->sr_rows[sprite][0], iplane + yline * iline, xoff[sprite], xadv[sprite], width);
235  sr_cache[sprite][0] = yline;
236  }
237  }
238  if (ysub[sprite] && sr_cache[sprite][1] != yline + 1) {
239  v->vc1dsp.sprite_h(v->sr_rows[sprite][1],
240  iplane + next_line, xoff[sprite],
241  xadv[sprite], width);
242  sr_cache[sprite][1] = yline + 1;
243  }
244  src_h[sprite][0] = v->sr_rows[sprite][0];
245  src_h[sprite][1] = v->sr_rows[sprite][1];
246  }
247  }
248 
249  if (!v->two_sprites) {
250  if (ysub[0]) {
251  v->vc1dsp.sprite_v_single(dst, src_h[0][0], src_h[0][1], ysub[0], width);
252  } else {
253  memcpy(dst, src_h[0][0], width);
254  }
255  } else {
256  if (ysub[0] && ysub[1]) {
257  v->vc1dsp.sprite_v_double_twoscale(dst, src_h[0][0], src_h[0][1], ysub[0],
258  src_h[1][0], src_h[1][1], ysub[1], alpha, width);
259  } else if (ysub[0]) {
260  v->vc1dsp.sprite_v_double_onescale(dst, src_h[0][0], src_h[0][1], ysub[0],
261  src_h[1][0], alpha, width);
262  } else if (ysub[1]) {
263  v->vc1dsp.sprite_v_double_onescale(dst, src_h[1][0], src_h[1][1], ysub[1],
264  src_h[0][0], (1<<16)-1-alpha, width);
265  } else {
266  v->vc1dsp.sprite_v_double_noscale(dst, src_h[0][0], src_h[1][0], alpha, width);
267  }
268  }
269  }
270 
271  if (!plane) {
272  for (i = 0; i <= v->two_sprites; i++) {
273  xoff[i] >>= 1;
274  yoff[i] >>= 1;
275  }
276  }
277 
278  }
279 }
280 
281 
282 static int vc1_decode_sprites(VC1Context *v, GetBitContext* gb)
283 {
284  int ret;
285  MpegEncContext *s = &v->s;
286  AVCodecContext *avctx = s->avctx;
287  SpriteData sd;
288 
289  memset(&sd, 0, sizeof(sd));
290 
291  ret = vc1_parse_sprites(v, gb, &sd);
292  if (ret < 0)
293  return ret;
294 
295  if (!s->current_picture.f || !s->current_picture.f->data[0]) {
296  av_log(avctx, AV_LOG_ERROR, "Got no sprites\n");
297  return AVERROR_UNKNOWN;
298  }
299 
300  if (v->two_sprites && (!s->last_picture_ptr || !s->last_picture.f->data[0])) {
301  av_log(avctx, AV_LOG_WARNING, "Need two sprites, only got one\n");
302  v->two_sprites = 0;
303  }
304 
306  if ((ret = ff_get_buffer(avctx, v->sprite_output_frame, 0)) < 0)
307  return ret;
308 
309  vc1_draw_sprites(v, &sd);
310 
311  return 0;
312 }
313 
314 static void vc1_sprite_flush(AVCodecContext *avctx)
315 {
316  VC1Context *v = avctx->priv_data;
317  MpegEncContext *s = &v->s;
318  AVFrame *f = s->current_picture.f;
319  int plane, i;
320 
321  /* Windows Media Image codecs have a convergence interval of two keyframes.
322  Since we can't enforce it, clear to black the missing sprite. This is
323  wrong but it looks better than doing nothing. */
324 
325  if (f && f->data[0])
326  for (plane = 0; plane < (CONFIG_GRAY && s->avctx->flags & AV_CODEC_FLAG_GRAY ? 1 : 3); plane++)
327  for (i = 0; i < v->sprite_height>>!!plane; i++)
328  memset(f->data[plane] + i * f->linesize[plane],
329  plane ? 128 : 0, f->linesize[plane]);
330 }
331 
332 #endif
333 
335 {
336  MpegEncContext *s = &v->s;
337  int i, ret;
338  int mb_height = FFALIGN(s->mb_height, 2);
339 
340  /* Allocate mb bitplanes */
341  v->mv_type_mb_plane = av_malloc (s->mb_stride * mb_height);
342  v->direct_mb_plane = av_malloc (s->mb_stride * mb_height);
343  v->forward_mb_plane = av_malloc (s->mb_stride * mb_height);
344  v->fieldtx_plane = av_mallocz(s->mb_stride * mb_height);
345  v->acpred_plane = av_malloc (s->mb_stride * mb_height);
346  v->over_flags_plane = av_malloc (s->mb_stride * mb_height);
347  if (!v->mv_type_mb_plane || !v->direct_mb_plane || !v->forward_mb_plane ||
348  !v->fieldtx_plane || !v->acpred_plane || !v->over_flags_plane)
349  return AVERROR(ENOMEM);
350 
351  v->n_allocated_blks = s->mb_width + 2;
352  v->block = av_malloc(sizeof(*v->block) * v->n_allocated_blks);
353  v->cbp_base = av_malloc(sizeof(v->cbp_base[0]) * 3 * s->mb_stride);
354  if (!v->block || !v->cbp_base)
355  return AVERROR(ENOMEM);
356  v->cbp = v->cbp_base + 2 * s->mb_stride;
357  v->ttblk_base = av_malloc(sizeof(v->ttblk_base[0]) * 3 * s->mb_stride);
358  if (!v->ttblk_base)
359  return AVERROR(ENOMEM);
360  v->ttblk = v->ttblk_base + 2 * s->mb_stride;
361  v->is_intra_base = av_mallocz(sizeof(v->is_intra_base[0]) * 3 * s->mb_stride);
362  if (!v->is_intra_base)
363  return AVERROR(ENOMEM);
364  v->is_intra = v->is_intra_base + 2 * s->mb_stride;
365  v->luma_mv_base = av_mallocz(sizeof(v->luma_mv_base[0]) * 3 * s->mb_stride);
366  if (!v->luma_mv_base)
367  return AVERROR(ENOMEM);
368  v->luma_mv = v->luma_mv_base + 2 * s->mb_stride;
369 
370  /* allocate block type info in that way so it could be used with s->block_index[] */
371  v->mb_type_base = av_malloc(s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
372  if (!v->mb_type_base)
373  return AVERROR(ENOMEM);
374  v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
375  v->mb_type[1] = v->mb_type_base + s->b8_stride * (mb_height * 2 + 1) + s->mb_stride + 1;
376  v->mb_type[2] = v->mb_type[1] + s->mb_stride * (mb_height + 1);
377 
378  /* allocate memory to store block level MV info */
379  v->blk_mv_type_base = av_mallocz( s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
380  if (!v->blk_mv_type_base)
381  return AVERROR(ENOMEM);
382  v->blk_mv_type = v->blk_mv_type_base + s->b8_stride + 1;
383  v->mv_f_base = av_mallocz(2 * (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2));
384  if (!v->mv_f_base)
385  return AVERROR(ENOMEM);
386  v->mv_f[0] = v->mv_f_base + s->b8_stride + 1;
387  v->mv_f[1] = v->mv_f[0] + (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
388  v->mv_f_next_base = av_mallocz(2 * (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2));
389  if (!v->mv_f_next_base)
390  return AVERROR(ENOMEM);
391  v->mv_f_next[0] = v->mv_f_next_base + s->b8_stride + 1;
392  v->mv_f_next[1] = v->mv_f_next[0] + (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
393 
394  if (s->avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || s->avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
395  for (i = 0; i < 4; i++)
396  if (!(v->sr_rows[i >> 1][i & 1] = av_malloc(v->output_width)))
397  return AVERROR(ENOMEM);
398  }
399 
400  ret = ff_intrax8_common_init(s->avctx, &v->x8,
401  s->block, s->block_last_index,
402  s->mb_width, s->mb_height);
403  if (ret < 0)
404  return ret;
405 
406  return 0;
407 }
408 
410 {
411  if (avctx->codec_id == AV_CODEC_ID_MSS2)
412  return AV_PIX_FMT_YUV420P;
413 
414  if (CONFIG_GRAY && (avctx->flags & AV_CODEC_FLAG_GRAY)) {
415  if (avctx->color_range == AVCOL_RANGE_UNSPECIFIED)
416  avctx->color_range = AVCOL_RANGE_MPEG;
417  return AV_PIX_FMT_GRAY8;
418  }
419 
420  return ff_get_format(avctx, avctx->codec->pix_fmts);
421 }
422 
424 {
425  VC1Context *const v = avctx->priv_data;
426  MpegEncContext *const s = &v->s;
427  int ret;
428 
429  ret = av_image_check_size(avctx->width, avctx->height, 0, avctx);
430  if (ret < 0)
431  return ret;
432 
433  ff_mpv_decode_init(s, avctx);
434 
435  avctx->pix_fmt = vc1_get_format(avctx);
436 
438  if (ret < 0)
439  return ret;
440 
441  s->y_dc_scale_table = ff_wmv3_dc_scale_table;
442  s->c_dc_scale_table = ff_wmv3_dc_scale_table;
443 
444  ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable,
445  ff_wmv1_scantable[0]);
446  ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable,
447  ff_wmv1_scantable[1]);
448 
450  if (ret < 0) {
451  ff_vc1_decode_end(avctx);
452  return ret;
453  }
454  return 0;
455 }
456 
458 {
459  int i;
460  for (i = 0; i < 64; i++) {
461 #define transpose(x) (((x) >> 3) | (((x) & 7) << 3))
462  v->zz_8x8[0][i] = transpose(ff_wmv1_scantable[0][i]);
463  v->zz_8x8[1][i] = transpose(ff_wmv1_scantable[1][i]);
464  v->zz_8x8[2][i] = transpose(ff_wmv1_scantable[2][i]);
465  v->zz_8x8[3][i] = transpose(ff_wmv1_scantable[3][i]);
467  }
468  v->left_blk_sh = 0;
469  v->top_blk_sh = 3;
470 }
471 
472 static av_cold void vc1_init_static(void)
473 {
474  static VLCElem vlc_table[32372];
475  VLCInitState state = VLC_INIT_STATE(vlc_table);
476 
478  vc1_norm2_bits, 1, 1,
479  vc1_norm2_codes, 1, 1, 0);
481  vc1_norm6_bits, 1, 1,
482  vc1_norm6_codes, 2, 2, 0);
484  vc1_imode_bits, 1, 1,
485  vc1_imode_codes, 1, 1, 0);
486  for (int i = 0; i < 3; i++) {
487  ff_vc1_ttmb_vlc[i] =
489  vc1_ttmb_bits[i], 1, 1,
490  vc1_ttmb_codes[i], 2, 2, 0);
493  vc1_ttblk_bits[i], 1, 1,
494  vc1_ttblk_codes[i], 1, 1, 0);
497  vc1_subblkpat_bits[i], 1, 1,
498  vc1_subblkpat_codes[i], 1, 1, 0);
499  }
500  for (int i = 0; i < 4; i++) {
504  vc1_4mv_block_pattern_codes[i], 1, 1, 0);
507  vc1_cbpcy_p_bits[i], 1, 1,
508  vc1_cbpcy_p_codes[i], 2, 2, 0);
511  vc1_mv_diff_bits[i], 1, 1,
512  vc1_mv_diff_codes[i], 2, 2, 0);
513  /* initialize 4MV MBMODE VLC tables for interlaced frame P picture */
517  vc1_intfr_4mv_mbmode_codes[i], 2, 2, 0);
518  /* initialize NON-4MV MBMODE VLC tables for the same */
522  vc1_intfr_non4mv_mbmode_codes[i], 1, 1, 0);
523  /* initialize interlaced MVDATA tables (1-Ref) */
526  vc1_1ref_mvdata_bits[i], 1, 1,
527  vc1_1ref_mvdata_codes[i], 4, 4, 0);
528  /* Initialize 2MV Block pattern VLC tables */
532  vc1_2mv_block_pattern_codes[i], 1, 1, 0);
533  }
534  for (int i = 0; i < 8; i++) {
537  &vc1_ac_tables[i][0][1], 8, 4,
538  &vc1_ac_tables[i][0][0], 8, 4, 0);
539  /* initialize interlaced MVDATA tables (2-Ref) */
542  vc1_2ref_mvdata_bits[i], 1, 1,
543  vc1_2ref_mvdata_codes[i], 4, 4, 0);
544  /* Initialize interlaced CBPCY VLC tables (Table 124 - Table 131) */
547  vc1_icbpcy_p_bits[i], 1, 1,
548  vc1_icbpcy_p_codes[i], 2, 2, 0);
549  /* Initialize interlaced field picture MBMODE VLC tables */
552  vc1_if_mmv_mbmode_bits[i], 1, 1,
553  vc1_if_mmv_mbmode_codes[i], 1, 1, 0);
556  vc1_if_1mv_mbmode_bits[i], 1, 1,
557  vc1_if_1mv_mbmode_codes[i], 1, 1, 0);
558  }
560 }
561 
562 /**
563  * Init VC-1 specific tables and VC1Context members
564  * @param v The VC1Context to initialize
565  * @return Status
566  */
568 {
569  static AVOnce init_static_once = AV_ONCE_INIT;
570  MpegEncContext *const s = &v->s;
571 
572  /* defaults */
573  v->pq = -1;
574  v->mvrange = 0; /* 7.1.1.18, p80 */
575 
576  s->avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
577  s->out_format = FMT_H263;
578 
579  s->h263_pred = 1;
580  s->msmpeg4_version = 6;
581 
582  ff_vc1dsp_init(&v->vc1dsp);
583 
584  /* For error resilience */
585  ff_qpeldsp_init(&s->qdsp);
586 
587  /* VLC tables */
588  ff_thread_once(&init_static_once, vc1_init_static);
589 }
590 
591 /** Initialize a VC1/WMV3 decoder
592  * @todo TODO: Handle VC-1 IDUs (Transport level?)
593  * @todo TODO: Decipher remaining bits in extra_data
594  */
596 {
597  VC1Context *v = avctx->priv_data;
598  MpegEncContext *s = &v->s;
599  GetBitContext gb;
600  int ret;
601 
602  /* save the container output size for WMImage */
603  v->output_width = avctx->width;
604  v->output_height = avctx->height;
605 
606  if (!avctx->extradata_size || !avctx->extradata)
607  return AVERROR_INVALIDDATA;
608  v->s.avctx = avctx;
609 
611 
612  if (avctx->codec_id == AV_CODEC_ID_WMV3 || avctx->codec_id == AV_CODEC_ID_WMV3IMAGE) {
613  int count = 0;
614 
615  // looks like WMV3 has a sequence header stored in the extradata
616  // advanced sequence header may be before the first frame
617  // the last byte of the extradata is a version number, 1 for the
618  // samples we can decode
619 
620  ret = init_get_bits8(&gb, avctx->extradata, avctx->extradata_size);
621  if (ret < 0)
622  return ret;
623 
624  if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0)
625  return ret;
626 
627  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE && !v->res_sprite) {
628  avpriv_request_sample(avctx, "Non sprite WMV3IMAGE");
629  return AVERROR_PATCHWELCOME;
630  }
631 
632  count = avctx->extradata_size*8 - get_bits_count(&gb);
633  if (count > 0) {
634  av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
635  count, get_bits_long(&gb, FFMIN(count, 32)));
636  } else if (count < 0) {
637  av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
638  }
639  } else { // VC1/WVC1/WVP2
640  const uint8_t *start = avctx->extradata;
641  uint8_t *end = avctx->extradata + avctx->extradata_size;
642  const uint8_t *next;
643  int size, buf2_size;
644  uint8_t *buf2 = NULL;
645  int seq_initialized = 0, ep_initialized = 0;
646 
647  if (avctx->extradata_size < 16) {
648  av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
649  return AVERROR_INVALIDDATA;
650  }
651 
653  if (!buf2)
654  return AVERROR(ENOMEM);
655 
656  start = find_next_marker(start, end); // in WVC1 extradata first byte is its size, but can be 0 in mkv
657  next = start;
658  for (; next < end; start = next) {
659  next = find_next_marker(start + 4, end);
660  size = next - start - 4;
661  if (size <= 0)
662  continue;
663  buf2_size = v->vc1dsp.vc1_unescape_buffer(start + 4, size, buf2);
664  init_get_bits(&gb, buf2, buf2_size * 8);
665  switch (AV_RB32(start)) {
666  case VC1_CODE_SEQHDR:
667  if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0) {
668  av_free(buf2);
669  return ret;
670  }
671  seq_initialized = 1;
672  break;
673  case VC1_CODE_ENTRYPOINT:
674  if ((ret = ff_vc1_decode_entry_point(avctx, v, &gb)) < 0) {
675  av_free(buf2);
676  return ret;
677  }
678  ep_initialized = 1;
679  break;
680  }
681  }
682  av_free(buf2);
683  if (!seq_initialized || !ep_initialized) {
684  av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
685  return AVERROR_INVALIDDATA;
686  }
687  v->res_sprite = (avctx->codec_id == AV_CODEC_ID_VC1IMAGE);
688  }
689 
690  avctx->profile = v->profile;
691  if (v->profile == PROFILE_ADVANCED)
692  avctx->level = v->level;
693 
694  if (!CONFIG_GRAY || !(avctx->flags & AV_CODEC_FLAG_GRAY))
695  avctx->pix_fmt = ff_get_format(avctx, avctx->codec->pix_fmts);
696  else {
697  avctx->pix_fmt = AV_PIX_FMT_GRAY8;
698  if (avctx->color_range == AVCOL_RANGE_UNSPECIFIED)
699  avctx->color_range = AVCOL_RANGE_MPEG;
700  }
701 
702  ff_blockdsp_init(&s->bdsp);
704 
705  avctx->has_b_frames = !!avctx->max_b_frames;
706 
707  if (v->color_prim == 1 || v->color_prim == 5 || v->color_prim == 6)
708  avctx->color_primaries = v->color_prim;
709  if (v->transfer_char == 1 || v->transfer_char == 7)
710  avctx->color_trc = v->transfer_char;
711  if (v->matrix_coef == 1 || v->matrix_coef == 6 || v->matrix_coef == 7)
712  avctx->colorspace = v->matrix_coef;
713 
714  s->mb_width = (avctx->coded_width + 15) >> 4;
715  s->mb_height = (avctx->coded_height + 15) >> 4;
716 
717  if (v->profile == PROFILE_ADVANCED || v->res_fasttx) {
719  } else {
720  memcpy(v->zz_8x8, ff_wmv1_scantable, 4*64);
721  v->left_blk_sh = 3;
722  v->top_blk_sh = 0;
731  }
732 
733  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
734  v->sprite_width = avctx->coded_width;
735  v->sprite_height = avctx->coded_height;
736 
737  avctx->coded_width = avctx->width = v->output_width;
738  avctx->coded_height = avctx->height = v->output_height;
739 
740  // prevent 16.16 overflows
741  if (v->sprite_width > 1 << 14 ||
742  v->sprite_height > 1 << 14 ||
743  v->output_width > 1 << 14 ||
744  v->output_height > 1 << 14) {
745  return AVERROR_INVALIDDATA;
746  }
747 
748  if ((v->sprite_width&1) || (v->sprite_height&1)) {
749  avpriv_request_sample(avctx, "odd sprites support");
750  return AVERROR_PATCHWELCOME;
751  }
752  }
753  return 0;
754 }
755 
756 /** Close a VC1/WMV3 decoder
757  * @warning Initial try at using MpegEncContext stuff
758  */
760 {
761  VC1Context *v = avctx->priv_data;
762  int i;
763 
765 
766  for (i = 0; i < 4; i++)
767  av_freep(&v->sr_rows[i >> 1][i & 1]);
768  ff_mpv_common_end(&v->s);
772  av_freep(&v->fieldtx_plane);
773  av_freep(&v->acpred_plane);
775  av_freep(&v->mb_type_base);
777  av_freep(&v->mv_f_base);
779  av_freep(&v->block);
780  av_freep(&v->cbp_base);
781  av_freep(&v->ttblk_base);
782  av_freep(&v->is_intra_base); // FIXME use v->mb_type[]
783  av_freep(&v->luma_mv_base);
785  return 0;
786 }
787 
788 
789 /** Decode a VC1/WMV3 frame
790  * @todo TODO: Handle VC-1 IDUs (Transport level?)
791  */
792 static int vc1_decode_frame(AVCodecContext *avctx, AVFrame *pict,
793  int *got_frame, AVPacket *avpkt)
794 {
795  const uint8_t *buf = avpkt->data;
796  int buf_size = avpkt->size, n_slices = 0, i, ret;
797  VC1Context *v = avctx->priv_data;
798  MpegEncContext *s = &v->s;
799  uint8_t *buf2 = NULL;
800  const uint8_t *buf_start = buf, *buf_start_second_field = NULL;
801  int mb_height, n_slices1=-1;
802  struct {
803  uint8_t *buf;
804  GetBitContext gb;
805  int mby_start;
806  const uint8_t *rawbuf;
807  int raw_size;
808  } *slices = NULL, *tmp;
809  unsigned slices_allocated = 0;
810 
811  v->second_field = 0;
812 
813  if(s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY)
814  s->low_delay = 1;
815 
816  /* no supplementary picture */
817  if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == VC1_CODE_ENDOFSEQ)) {
818  /* special case for last picture */
819  if (s->low_delay == 0 && s->next_picture_ptr) {
820  if ((ret = av_frame_ref(pict, s->next_picture_ptr->f)) < 0)
821  return ret;
822  s->next_picture_ptr = NULL;
823 
824  *got_frame = 1;
825  }
826 
827  return buf_size;
828  }
829 
830  //for advanced profile we may need to parse and unescape data
831  if (avctx->codec_id == AV_CODEC_ID_VC1 || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
832  int buf_size2 = 0;
833  size_t next_allocated = 0;
834  buf2 = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
835  if (!buf2)
836  return AVERROR(ENOMEM);
837 
838  if (IS_MARKER(AV_RB32(buf))) { /* frame starts with marker and needs to be parsed */
839  const uint8_t *start, *end, *next;
840  int size;
841 
842  next = buf;
843  for (start = buf, end = buf + buf_size; next < end; start = next) {
844  next = find_next_marker(start + 4, end);
845  size = next - start - 4;
846  if (size <= 0) continue;
847  switch (AV_RB32(start)) {
848  case VC1_CODE_FRAME:
849  if (avctx->hwaccel)
850  buf_start = start;
851  buf_size2 = v->vc1dsp.vc1_unescape_buffer(start + 4, size, buf2);
852  break;
853  case VC1_CODE_FIELD: {
854  int buf_size3;
855  if (avctx->hwaccel)
856  buf_start_second_field = start;
857  av_size_mult(sizeof(*slices), n_slices+1, &next_allocated);
858  tmp = next_allocated ? av_fast_realloc(slices, &slices_allocated, next_allocated) : NULL;
859  if (!tmp) {
860  ret = AVERROR(ENOMEM);
861  goto err;
862  }
863  slices = tmp;
864  slices[n_slices].buf = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
865  if (!slices[n_slices].buf) {
866  ret = AVERROR(ENOMEM);
867  goto err;
868  }
869  buf_size3 = v->vc1dsp.vc1_unescape_buffer(start + 4, size,
870  slices[n_slices].buf);
871  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
872  buf_size3 << 3);
873  slices[n_slices].mby_start = avctx->coded_height + 31 >> 5;
874  slices[n_slices].rawbuf = start;
875  slices[n_slices].raw_size = size + 4;
876  n_slices1 = n_slices - 1; // index of the last slice of the first field
877  n_slices++;
878  break;
879  }
880  case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
881  buf_size2 = v->vc1dsp.vc1_unescape_buffer(start + 4, size, buf2);
882  init_get_bits(&s->gb, buf2, buf_size2 * 8);
883  ff_vc1_decode_entry_point(avctx, v, &s->gb);
884  break;
885  case VC1_CODE_SLICE: {
886  int buf_size3;
887  av_size_mult(sizeof(*slices), n_slices+1, &next_allocated);
888  tmp = next_allocated ? av_fast_realloc(slices, &slices_allocated, next_allocated) : NULL;
889  if (!tmp) {
890  ret = AVERROR(ENOMEM);
891  goto err;
892  }
893  slices = tmp;
894  slices[n_slices].buf = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
895  if (!slices[n_slices].buf) {
896  ret = AVERROR(ENOMEM);
897  goto err;
898  }
899  buf_size3 = v->vc1dsp.vc1_unescape_buffer(start + 4, size,
900  slices[n_slices].buf);
901  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
902  buf_size3 << 3);
903  slices[n_slices].mby_start = get_bits(&slices[n_slices].gb, 9);
904  slices[n_slices].rawbuf = start;
905  slices[n_slices].raw_size = size + 4;
906  n_slices++;
907  break;
908  }
909  }
910  }
911  } else if (v->interlace && ((buf[0] & 0xC0) == 0xC0)) { /* WVC1 interlaced stores both fields divided by marker */
912  const uint8_t *divider;
913  int buf_size3;
914 
915  divider = find_next_marker(buf, buf + buf_size);
916  if ((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD) {
917  av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
919  goto err;
920  } else { // found field marker, unescape second field
921  if (avctx->hwaccel)
922  buf_start_second_field = divider;
923  av_size_mult(sizeof(*slices), n_slices+1, &next_allocated);
924  tmp = next_allocated ? av_fast_realloc(slices, &slices_allocated, next_allocated) : NULL;
925  if (!tmp) {
926  ret = AVERROR(ENOMEM);
927  goto err;
928  }
929  slices = tmp;
930  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
931  if (!slices[n_slices].buf) {
932  ret = AVERROR(ENOMEM);
933  goto err;
934  }
935  buf_size3 = v->vc1dsp.vc1_unescape_buffer(divider + 4, buf + buf_size - divider - 4, slices[n_slices].buf);
936  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
937  buf_size3 << 3);
938  slices[n_slices].mby_start = s->mb_height + 1 >> 1;
939  slices[n_slices].rawbuf = divider;
940  slices[n_slices].raw_size = buf + buf_size - divider;
941  n_slices1 = n_slices - 1;
942  n_slices++;
943  }
944  buf_size2 = v->vc1dsp.vc1_unescape_buffer(buf, divider - buf, buf2);
945  } else {
946  buf_size2 = v->vc1dsp.vc1_unescape_buffer(buf, buf_size, buf2);
947  }
948  init_get_bits(&s->gb, buf2, buf_size2*8);
949  } else{
950  ret = init_get_bits8(&s->gb, buf, buf_size);
951  if (ret < 0)
952  return ret;
953  }
954 
955  if (v->res_sprite) {
956  v->new_sprite = !get_bits1(&s->gb);
957  v->two_sprites = get_bits1(&s->gb);
958  /* res_sprite means a Windows Media Image stream, AV_CODEC_ID_*IMAGE means
959  we're using the sprite compositor. These are intentionally kept separate
960  so you can get the raw sprites by using the wmv3 decoder for WMVP or
961  the vc1 one for WVP2 */
962  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
963  if (v->new_sprite) {
964  // switch AVCodecContext parameters to those of the sprites
965  avctx->width = avctx->coded_width = v->sprite_width;
966  avctx->height = avctx->coded_height = v->sprite_height;
967  } else {
968  goto image;
969  }
970  }
971  }
972 
973  if (s->context_initialized &&
974  (s->width != avctx->coded_width ||
975  s->height != avctx->coded_height)) {
976  ff_vc1_decode_end(avctx);
977  }
978 
979  if (!s->context_initialized) {
980  ret = ff_vc1_decode_init(avctx);
981  if (ret < 0)
982  goto err;
983 
984  s->low_delay = !avctx->has_b_frames || v->res_sprite;
985 
986  if (v->profile == PROFILE_ADVANCED) {
987  if(avctx->coded_width<=1 || avctx->coded_height<=1) {
989  goto err;
990  }
991  s->h_edge_pos = avctx->coded_width;
992  s->v_edge_pos = avctx->coded_height;
993  }
994  }
995 
996  // do parse frame header
997  v->pic_header_flag = 0;
998  v->first_pic_header_flag = 1;
999  if (v->profile < PROFILE_ADVANCED) {
1000  if ((ret = ff_vc1_parse_frame_header(v, &s->gb)) < 0) {
1001  goto err;
1002  }
1003  } else {
1004  if ((ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1005  goto err;
1006  }
1007  }
1008  v->first_pic_header_flag = 0;
1009 
1010  if (avctx->debug & FF_DEBUG_PICT_INFO)
1011  av_log(v->s.avctx, AV_LOG_DEBUG, "pict_type: %c\n", av_get_picture_type_char(s->pict_type));
1012 
1013  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
1014  && s->pict_type != AV_PICTURE_TYPE_I) {
1015  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected I-frame\n");
1017  goto err;
1018  }
1019  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
1020  && v->field_mode) {
1021  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected Frames not Fields\n");
1023  goto err;
1024  }
1025  if ((s->mb_height >> v->field_mode) == 0) {
1026  av_log(v->s.avctx, AV_LOG_ERROR, "image too short\n");
1028  goto err;
1029  }
1030 
1031  /* skip B-frames if we don't have reference frames */
1032  if (!s->last_picture_ptr && s->pict_type == AV_PICTURE_TYPE_B) {
1033  av_log(v->s.avctx, AV_LOG_DEBUG, "Skipping B frame without reference frames\n");
1034  goto end;
1035  }
1036  if ((avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B) ||
1037  (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I) ||
1038  avctx->skip_frame >= AVDISCARD_ALL) {
1039  goto end;
1040  }
1041 
1042  if ((ret = ff_mpv_frame_start(s, avctx)) < 0) {
1043  goto err;
1044  }
1045 
1049 
1050  // process pulldown flags
1051  s->current_picture_ptr->f->repeat_pict = 0;
1052  // Pulldown flags are only valid when 'broadcast' has been set.
1053  if (v->rff) {
1054  // repeat field
1055  s->current_picture_ptr->f->repeat_pict = 1;
1056  } else if (v->rptfrm) {
1057  // repeat frames
1058  s->current_picture_ptr->f->repeat_pict = v->rptfrm * 2;
1059  }
1060 
1061  if (avctx->hwaccel) {
1062  const FFHWAccel *hwaccel = ffhwaccel(avctx->hwaccel);
1063  s->mb_y = 0;
1064  if (v->field_mode && buf_start_second_field) {
1065  // decode first field
1066  s->picture_structure = PICT_BOTTOM_FIELD - v->tff;
1067  ret = hwaccel->start_frame(avctx, buf_start,
1068  buf_start_second_field - buf_start);
1069  if (ret < 0)
1070  goto err;
1071 
1072  if (n_slices1 == -1) {
1073  // no slices, decode the field as-is
1074  ret = hwaccel->decode_slice(avctx, buf_start,
1075  buf_start_second_field - buf_start);
1076  if (ret < 0)
1077  goto err;
1078  } else {
1079  ret = hwaccel->decode_slice(avctx, buf_start,
1080  slices[0].rawbuf - buf_start);
1081  if (ret < 0)
1082  goto err;
1083 
1084  for (i = 0 ; i < n_slices1 + 1; i++) {
1085  s->gb = slices[i].gb;
1086  s->mb_y = slices[i].mby_start;
1087 
1088  v->pic_header_flag = get_bits1(&s->gb);
1089  if (v->pic_header_flag) {
1090  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1091  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1093  if (avctx->err_recognition & AV_EF_EXPLODE)
1094  goto err;
1095  continue;
1096  }
1097  }
1098 
1099  ret = hwaccel->decode_slice(avctx, slices[i].rawbuf,
1100  slices[i].raw_size);
1101  if (ret < 0)
1102  goto err;
1103  }
1104  }
1105 
1106  if ((ret = hwaccel->end_frame(avctx)) < 0)
1107  goto err;
1108 
1109  // decode second field
1110  s->gb = slices[n_slices1 + 1].gb;
1111  s->mb_y = slices[n_slices1 + 1].mby_start;
1112  s->picture_structure = PICT_TOP_FIELD + v->tff;
1113  v->second_field = 1;
1114  v->pic_header_flag = 0;
1115  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1116  av_log(avctx, AV_LOG_ERROR, "parsing header for second field failed");
1118  goto err;
1119  }
1121 
1122  ret = hwaccel->start_frame(avctx, buf_start_second_field,
1123  (buf + buf_size) - buf_start_second_field);
1124  if (ret < 0)
1125  goto err;
1126 
1127  if (n_slices - n_slices1 == 2) {
1128  // no slices, decode the field as-is
1129  ret = hwaccel->decode_slice(avctx, buf_start_second_field,
1130  (buf + buf_size) - buf_start_second_field);
1131  if (ret < 0)
1132  goto err;
1133  } else {
1134  ret = hwaccel->decode_slice(avctx, buf_start_second_field,
1135  slices[n_slices1 + 2].rawbuf - buf_start_second_field);
1136  if (ret < 0)
1137  goto err;
1138 
1139  for (i = n_slices1 + 2; i < n_slices; i++) {
1140  s->gb = slices[i].gb;
1141  s->mb_y = slices[i].mby_start;
1142 
1143  v->pic_header_flag = get_bits1(&s->gb);
1144  if (v->pic_header_flag) {
1145  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1146  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1148  if (avctx->err_recognition & AV_EF_EXPLODE)
1149  goto err;
1150  continue;
1151  }
1152  }
1153 
1154  ret = hwaccel->decode_slice(avctx, slices[i].rawbuf,
1155  slices[i].raw_size);
1156  if (ret < 0)
1157  goto err;
1158  }
1159  }
1160 
1161  if ((ret = hwaccel->end_frame(avctx)) < 0)
1162  goto err;
1163  } else {
1164  s->picture_structure = PICT_FRAME;
1165  ret = hwaccel->start_frame(avctx, buf_start,
1166  (buf + buf_size) - buf_start);
1167  if (ret < 0)
1168  goto err;
1169 
1170  if (n_slices == 0) {
1171  // no slices, decode the frame as-is
1172  ret = hwaccel->decode_slice(avctx, buf_start,
1173  (buf + buf_size) - buf_start);
1174  if (ret < 0)
1175  goto err;
1176  } else {
1177  // decode the frame part as the first slice
1178  ret = hwaccel->decode_slice(avctx, buf_start,
1179  slices[0].rawbuf - buf_start);
1180  if (ret < 0)
1181  goto err;
1182 
1183  // and process the slices as additional slices afterwards
1184  for (i = 0 ; i < n_slices; i++) {
1185  s->gb = slices[i].gb;
1186  s->mb_y = slices[i].mby_start;
1187 
1188  v->pic_header_flag = get_bits1(&s->gb);
1189  if (v->pic_header_flag) {
1190  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1191  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1193  if (avctx->err_recognition & AV_EF_EXPLODE)
1194  goto err;
1195  continue;
1196  }
1197  }
1198 
1199  ret = hwaccel->decode_slice(avctx, slices[i].rawbuf,
1200  slices[i].raw_size);
1201  if (ret < 0)
1202  goto err;
1203  }
1204  }
1205  if ((ret = hwaccel->end_frame(avctx)) < 0)
1206  goto err;
1207  }
1208  } else {
1209  int header_ret = 0;
1210 
1212 
1213  v->end_mb_x = s->mb_width;
1214  if (v->field_mode) {
1215  s->current_picture.f->linesize[0] <<= 1;
1216  s->current_picture.f->linesize[1] <<= 1;
1217  s->current_picture.f->linesize[2] <<= 1;
1218  s->linesize <<= 1;
1219  s->uvlinesize <<= 1;
1220  }
1221  mb_height = s->mb_height >> v->field_mode;
1222 
1223  av_assert0 (mb_height > 0);
1224 
1225  for (i = 0; i <= n_slices; i++) {
1226  if (i > 0 && slices[i - 1].mby_start >= mb_height) {
1227  if (v->field_mode <= 0) {
1228  av_log(v->s.avctx, AV_LOG_ERROR, "Slice %d starts beyond "
1229  "picture boundary (%d >= %d)\n", i,
1230  slices[i - 1].mby_start, mb_height);
1231  continue;
1232  }
1233  v->second_field = 1;
1234  av_assert0((s->mb_height & 1) == 0);
1235  v->blocks_off = s->b8_stride * (s->mb_height&~1);
1236  v->mb_off = s->mb_stride * s->mb_height >> 1;
1237  } else {
1238  v->second_field = 0;
1239  v->blocks_off = 0;
1240  v->mb_off = 0;
1241  }
1242  if (i) {
1243  v->pic_header_flag = 0;
1244  if (v->field_mode && i == n_slices1 + 2) {
1245  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1246  av_log(v->s.avctx, AV_LOG_ERROR, "Field header damaged\n");
1248  if (avctx->err_recognition & AV_EF_EXPLODE)
1249  goto err;
1250  continue;
1251  }
1252  } else if (get_bits1(&s->gb)) {
1253  v->pic_header_flag = 1;
1254  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1255  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1257  if (avctx->err_recognition & AV_EF_EXPLODE)
1258  goto err;
1259  continue;
1260  }
1261  }
1262  }
1263  if (header_ret < 0)
1264  continue;
1265  s->start_mb_y = (i == 0) ? 0 : FFMAX(0, slices[i-1].mby_start % mb_height);
1266  if (!v->field_mode || v->second_field)
1267  s->end_mb_y = (i == n_slices ) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1268  else {
1269  if (i >= n_slices) {
1270  av_log(v->s.avctx, AV_LOG_ERROR, "first field slice count too large\n");
1271  continue;
1272  }
1273  s->end_mb_y = (i == n_slices1 + 1) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1274  }
1275  if (s->end_mb_y <= s->start_mb_y) {
1276  av_log(v->s.avctx, AV_LOG_ERROR, "end mb y %d %d invalid\n", s->end_mb_y, s->start_mb_y);
1277  continue;
1278  }
1279  if (((s->pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) ||
1280  (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type)) &&
1281  !v->cbpcy_vlc) {
1282  av_log(v->s.avctx, AV_LOG_ERROR, "missing cbpcy_vlc\n");
1283  continue;
1284  }
1286  if (i != n_slices) {
1287  s->gb = slices[i].gb;
1288  }
1289  }
1290  if (v->field_mode) {
1291  v->second_field = 0;
1292  s->current_picture.f->linesize[0] >>= 1;
1293  s->current_picture.f->linesize[1] >>= 1;
1294  s->current_picture.f->linesize[2] >>= 1;
1295  s->linesize >>= 1;
1296  s->uvlinesize >>= 1;
1298  FFSWAP(uint8_t *, v->mv_f_next[0], v->mv_f[0]);
1299  FFSWAP(uint8_t *, v->mv_f_next[1], v->mv_f[1]);
1300  }
1301  }
1302  ff_dlog(s->avctx, "Consumed %i/%i bits\n",
1303  get_bits_count(&s->gb), s->gb.size_in_bits);
1304 // if (get_bits_count(&s->gb) > buf_size * 8)
1305 // return -1;
1306  if(s->er.error_occurred && s->pict_type == AV_PICTURE_TYPE_B) {
1308  goto err;
1309  }
1310  if ( !v->field_mode
1311  && avctx->codec_id != AV_CODEC_ID_WMV3IMAGE
1312  && avctx->codec_id != AV_CODEC_ID_VC1IMAGE)
1313  ff_er_frame_end(&s->er, NULL);
1314  }
1315 
1317 
1318  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
1319 image:
1320  avctx->width = avctx->coded_width = v->output_width;
1321  avctx->height = avctx->coded_height = v->output_height;
1322  if (avctx->skip_frame >= AVDISCARD_NONREF)
1323  goto end;
1324  if (!v->sprite_output_frame &&
1325  !(v->sprite_output_frame = av_frame_alloc())) {
1326  ret = AVERROR(ENOMEM);
1327  goto err;
1328  }
1329 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
1330  if ((ret = vc1_decode_sprites(v, &s->gb)) < 0)
1331  goto err;
1332 #endif
1333  if ((ret = av_frame_ref(pict, v->sprite_output_frame)) < 0)
1334  goto err;
1335  *got_frame = 1;
1336  } else {
1337  if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
1338  if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
1339  goto err;
1340  if (!v->field_mode)
1341  ff_print_debug_info(s, s->current_picture_ptr, pict);
1342  *got_frame = 1;
1343  } else if (s->last_picture_ptr) {
1344  if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
1345  goto err;
1346  if (!v->field_mode)
1347  ff_print_debug_info(s, s->last_picture_ptr, pict);
1348  *got_frame = 1;
1349  }
1350  }
1351 
1352 end:
1353  av_free(buf2);
1354  for (i = 0; i < n_slices; i++)
1355  av_free(slices[i].buf);
1356  av_free(slices);
1357  return buf_size;
1358 
1359 err:
1360  av_free(buf2);
1361  for (i = 0; i < n_slices; i++)
1362  av_free(slices[i].buf);
1363  av_free(slices);
1364  return ret;
1365 }
1366 
1367 
1369 #if CONFIG_VC1_DXVA2_HWACCEL
1371 #endif
1372 #if CONFIG_VC1_D3D11VA_HWACCEL
1375 #endif
1376 #if CONFIG_VC1_NVDEC_HWACCEL
1378 #endif
1379 #if CONFIG_VC1_VAAPI_HWACCEL
1381 #endif
1382 #if CONFIG_VC1_VDPAU_HWACCEL
1384 #endif
1387 };
1388 
1390  .p.name = "vc1",
1391  CODEC_LONG_NAME("SMPTE VC-1"),
1392  .p.type = AVMEDIA_TYPE_VIDEO,
1393  .p.id = AV_CODEC_ID_VC1,
1394  .priv_data_size = sizeof(VC1Context),
1395  .init = vc1_decode_init,
1396  .close = ff_vc1_decode_end,
1398  .flush = ff_mpeg_flush,
1399  .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1400  .p.pix_fmts = vc1_hwaccel_pixfmt_list_420,
1401  .hw_configs = (const AVCodecHWConfigInternal *const []) {
1402 #if CONFIG_VC1_DXVA2_HWACCEL
1403  HWACCEL_DXVA2(vc1),
1404 #endif
1405 #if CONFIG_VC1_D3D11VA_HWACCEL
1406  HWACCEL_D3D11VA(vc1),
1407 #endif
1408 #if CONFIG_VC1_D3D11VA2_HWACCEL
1409  HWACCEL_D3D11VA2(vc1),
1410 #endif
1411 #if CONFIG_VC1_NVDEC_HWACCEL
1412  HWACCEL_NVDEC(vc1),
1413 #endif
1414 #if CONFIG_VC1_VAAPI_HWACCEL
1415  HWACCEL_VAAPI(vc1),
1416 #endif
1417 #if CONFIG_VC1_VDPAU_HWACCEL
1418  HWACCEL_VDPAU(vc1),
1419 #endif
1420  NULL
1421  },
1422  .p.profiles = NULL_IF_CONFIG_SMALL(ff_vc1_profiles)
1423 };
1424 
1425 #if CONFIG_WMV3_DECODER
1426 const FFCodec ff_wmv3_decoder = {
1427  .p.name = "wmv3",
1428  CODEC_LONG_NAME("Windows Media Video 9"),
1429  .p.type = AVMEDIA_TYPE_VIDEO,
1430  .p.id = AV_CODEC_ID_WMV3,
1431  .priv_data_size = sizeof(VC1Context),
1432  .init = vc1_decode_init,
1433  .close = ff_vc1_decode_end,
1435  .flush = ff_mpeg_flush,
1436  .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1437  .p.pix_fmts = vc1_hwaccel_pixfmt_list_420,
1438  .hw_configs = (const AVCodecHWConfigInternal *const []) {
1439 #if CONFIG_WMV3_DXVA2_HWACCEL
1440  HWACCEL_DXVA2(wmv3),
1441 #endif
1442 #if CONFIG_WMV3_D3D11VA_HWACCEL
1443  HWACCEL_D3D11VA(wmv3),
1444 #endif
1445 #if CONFIG_WMV3_D3D11VA2_HWACCEL
1446  HWACCEL_D3D11VA2(wmv3),
1447 #endif
1448 #if CONFIG_WMV3_NVDEC_HWACCEL
1449  HWACCEL_NVDEC(wmv3),
1450 #endif
1451 #if CONFIG_WMV3_VAAPI_HWACCEL
1452  HWACCEL_VAAPI(wmv3),
1453 #endif
1454 #if CONFIG_WMV3_VDPAU_HWACCEL
1455  HWACCEL_VDPAU(wmv3),
1456 #endif
1457  NULL
1458  },
1459  .p.profiles = NULL_IF_CONFIG_SMALL(ff_vc1_profiles)
1460 };
1461 #endif
1462 
1463 #if CONFIG_WMV3IMAGE_DECODER
1464 const FFCodec ff_wmv3image_decoder = {
1465  .p.name = "wmv3image",
1466  CODEC_LONG_NAME("Windows Media Video 9 Image"),
1467  .p.type = AVMEDIA_TYPE_VIDEO,
1468  .p.id = AV_CODEC_ID_WMV3IMAGE,
1469  .priv_data_size = sizeof(VC1Context),
1470  .init = vc1_decode_init,
1471  .close = ff_vc1_decode_end,
1473  .p.capabilities = AV_CODEC_CAP_DR1,
1474  .flush = vc1_sprite_flush,
1475  .p.pix_fmts = (const enum AVPixelFormat[]) {
1478  },
1479 };
1480 #endif
1481 
1482 #if CONFIG_VC1IMAGE_DECODER
1483 const FFCodec ff_vc1image_decoder = {
1484  .p.name = "vc1image",
1485  CODEC_LONG_NAME("Windows Media Video 9 Image v2"),
1486  .p.type = AVMEDIA_TYPE_VIDEO,
1487  .p.id = AV_CODEC_ID_VC1IMAGE,
1488  .priv_data_size = sizeof(VC1Context),
1489  .init = vc1_decode_init,
1490  .close = ff_vc1_decode_end,
1492  .p.capabilities = AV_CODEC_CAP_DR1,
1493  .flush = vc1_sprite_flush,
1494  .p.pix_fmts = (const enum AVPixelFormat[]) {
1497  },
1498 };
1499 #endif
PICT_FRAME
#define PICT_FRAME
Definition: mpegutils.h:38
av_size_mult
int av_size_mult(size_t a, size_t b, size_t *r)
Multiply two size_t values checking for overflow.
Definition: mem.c:565
ff_mpv_common_init
av_cold int ff_mpv_common_init(MpegEncContext *s)
init common structure for both encoder and decoder.
Definition: mpegvideo.c:681
VC1DSPContext::sprite_v_double_noscale
void(* sprite_v_double_noscale)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src2a, int alpha, int width)
Definition: vc1dsp.h:69
hwconfig.h
AVCodecContext::hwaccel
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:1435
VC1Context::zz_8x8
uint8_t zz_8x8[4][64]
Zigzag table for TT_8x8, permuted for IDCT.
Definition: vc1.h:237
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
ff_simple_idct44_add
void ff_simple_idct44_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: simple_idct.c:224
VC1Context::new_sprite
int new_sprite
Frame decoding info for sprite modes.
Definition: vc1.h:375
AV_PIX_FMT_CUDA
@ AV_PIX_FMT_CUDA
HW acceleration through CUDA.
Definition: pixfmt.h:253
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
AV_EF_EXPLODE
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: defs.h:51
vc1_cbpcy_p_bits
static const uint8_t vc1_cbpcy_p_bits[4][64]
Definition: vc1_vlc_data.h:501
av_clip
#define av_clip
Definition: common.h:96
VC1Context::two_sprites
int two_sprites
Definition: vc1.h:376
blockdsp.h
VC1Context
The VC1 Context.
Definition: vc1.h:173
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
PROGRESSIVE
@ PROGRESSIVE
in the bitstream is reported as 00b
Definition: vc1.h:149
AVCodecContext::colorspace
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:1029
AC_VLC_BITS
#define AC_VLC_BITS
Definition: intrax8.c:41
ff_get_format
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
Definition: decode.c:1264
vc1_hwaccel_pixfmt_list_420
static enum AVPixelFormat vc1_hwaccel_pixfmt_list_420[]
Definition: vc1dec.c:1368
ff_vc1image_decoder
const FFCodec ff_vc1image_decoder
VC1Context::cbp
uint32_t * cbp
Definition: vc1.h:388
vc1_intfr_non4mv_mbmode_bits
static const uint8_t vc1_intfr_non4mv_mbmode_bits[4][9]
Definition: vc1_vlc_data.h:112
VC1Context::end_mb_x
int end_mb_x
Horizontal macroblock limit (used only by mss2)
Definition: vc1.h:395
VC1Context::interlace
int interlace
Progressive/interlaced (RPTFTM syntax element)
Definition: vc1.h:199
thread.h
vc1.h
vc1_subblkpat_codes
static const uint8_t vc1_subblkpat_codes[3][15]
Definition: vc1_vlc_data.h:744
VC1DSPContext::vc1_inv_trans_4x4
void(* vc1_inv_trans_4x4)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:40
AVCodecContext::err_recognition
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:1412
get_bits_long
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:421
vc1_2ref_mvdata_bits
static const uint8_t vc1_2ref_mvdata_bits[8][126]
Definition: vc1_vlc_data.h:389
ff_qpeldsp_init
av_cold void ff_qpeldsp_init(QpelDSPContext *c)
Definition: qpeldsp.c:784
vc1_2mv_block_pattern_bits
static const uint8_t vc1_2mv_block_pattern_bits[4][4]
Definition: vc1_vlc_data.h:85
get_bits_count
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:266
AVCodec::pix_fmts
enum AVPixelFormat * pix_fmts
array of supported pixel formats, or NULL if unknown, array is terminated by -1
Definition: codec.h:209
GetBitContext::size_in_bits
int size_in_bits
Definition: get_bits.h:111
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:100
Picture::field_picture
int field_picture
whether or not the picture was encoded in separate fields
Definition: mpegpicture.h:72
VC1Context::sprite_height
int sprite_height
Definition: vc1.h:378
VC1Context::left_blk_sh
int left_blk_sh
Definition: vc1.h:238
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:340
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:28
AVCodecContext::color_trc
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:1022
HWACCEL_DXVA2
#define HWACCEL_DXVA2(codec)
Definition: hwconfig.h:64
ff_simple_idct84_add
void ff_simple_idct84_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: simple_idct.c:194
AVPacket::data
uint8_t * data
Definition: packet.h:491
vc1_intfr_4mv_mbmode_bits
static const uint8_t vc1_intfr_4mv_mbmode_bits[4][15]
Definition: vc1_vlc_data.h:97
HWACCEL_D3D11VA2
#define HWACCEL_D3D11VA2(codec)
Definition: hwconfig.h:66
VC1_SUBBLKPAT_VLC_BITS
#define VC1_SUBBLKPAT_VLC_BITS
Definition: vc1data.h:79
VC1Context::cbp_base
uint32_t * cbp_base
Definition: vc1.h:388
VC1Context::mv_type_mb_plane
uint8_t * mv_type_mb_plane
bitplane for mv_type == (4MV)
Definition: vc1.h:284
AV_PIX_FMT_D3D11VA_VLD
@ AV_PIX_FMT_D3D11VA_VLD
HW decoding through Direct3D11 via old API, Picture.data[3] contains a ID3D11VideoDecoderOutputView p...
Definition: pixfmt.h:247
FFCodec
Definition: codec_internal.h:127
PICT_BOTTOM_FIELD
#define PICT_BOTTOM_FIELD
Definition: mpegutils.h:37
VC1_CBPCY_P_VLC_BITS
#define VC1_CBPCY_P_VLC_BITS
Definition: vc1data.h:69
VC1DSPContext::vc1_inv_trans_8x8_dc
void(* vc1_inv_trans_8x8_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:41
mpegvideo.h
MpegEncContext::avctx
struct AVCodecContext * avctx
Definition: mpegvideo.h:85
AVFrame::flags
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:649
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
VC1DSPContext::vc1_inv_trans_4x4_dc
void(* vc1_inv_trans_4x4_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:44
AVERROR_UNKNOWN
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:73
vc1_norm2_bits
static const uint8_t vc1_norm2_bits[4]
Definition: vc1_vlc_data.h:48
VC1Context::output_height
int output_height
Definition: vc1.h:378
VC1Context::luma_mv
int16_t((* luma_mv)[2]
Definition: vc1.h:390
vc1_ttmb_bits
static const uint8_t vc1_ttmb_bits[3][16]
Definition: vc1_vlc_data.h:701
init_get_bits
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:514
vc1_intfr_4mv_mbmode_codes
static const uint16_t vc1_intfr_4mv_mbmode_codes[4][15]
Definition: vc1_vlc_data.h:90
FF_DEBUG_PICT_INFO
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:1389
VC1Context::rptfrm
uint8_t rptfrm
Definition: vc1.h:310
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:361
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:30
find_next_marker
static const av_always_inline uint8_t * find_next_marker(const uint8_t *src, const uint8_t *end)
Find VC-1 marker in buffer.
Definition: vc1_common.h:59
AV_FRAME_FLAG_TOP_FIELD_FIRST
#define AV_FRAME_FLAG_TOP_FIELD_FIRST
A flag to mark frames where the top field is displayed first if the content is interlaced.
Definition: frame.h:641
ff_vc1_parse_frame_header
int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:622
skip_bits
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:381
get_bits
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:335
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:131
MpegEncContext::pict_type
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:201
FFHWAccel
Definition: hwaccel_internal.h:34
AVCodecContext::codec
const struct AVCodec * codec
Definition: avcodec.h:450
VC1_INTFR_NON4MV_MBMODE_VLC_BITS
#define VC1_INTFR_NON4MV_MBMODE_VLC_BITS
Definition: vc1data.h:83
AVCodecContext::skip_frame
enum AVDiscard skip_frame
Skip decoding for selected frames.
Definition: avcodec.h:1766
ff_vc1_if_1mv_mbmode_vlc
const VLCElem * ff_vc1_if_1mv_mbmode_vlc[8]
Definition: vc1data.c:120
GetBitContext
Definition: get_bits.h:108
vc1_decode_init
static av_cold int vc1_decode_init(AVCodecContext *avctx)
Initialize a VC1/WMV3 decoder.
Definition: vc1dec.c:595
VC1Context::first_pic_header_flag
int first_pic_header_flag
Definition: vc1.h:365
ff_vc1_decode_sequence_header
int ff_vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
Decode Simple/Main Profiles sequence header.
Definition: vc1.c:274
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:521
ff_vc1_norm6_vlc
VLCElem ff_vc1_norm6_vlc[556]
Definition: vc1data.c:107
HWACCEL_VDPAU
#define HWACCEL_VDPAU(codec)
Definition: hwconfig.h:72
AV_CODEC_FLAG_LOW_DELAY
#define AV_CODEC_FLAG_LOW_DELAY
Force low delay.
Definition: avcodec.h:330
AVCodecContext::coded_height
int coded_height
Definition: avcodec.h:636
ff_print_debug_info
void ff_print_debug_info(const MpegEncContext *s, const Picture *p, AVFrame *pict)
Definition: mpegvideo_dec.c:504
VC1Context::n_allocated_blks
int n_allocated_blks
Definition: vc1.h:387
VC1_TTMB_VLC_BITS
#define VC1_TTMB_VLC_BITS
Definition: vc1data.h:65
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:88
VC1_IF_MMV_MBMODE_VLC_BITS
#define VC1_IF_MMV_MBMODE_VLC_BITS
Definition: vc1data.h:85
ff_mpv_common_end
void ff_mpv_common_end(MpegEncContext *s)
Definition: mpegvideo.c:782
avassert.h
AVCodecContext::color_primaries
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:1015
ff_thread_once
static int ff_thread_once(char *control, void(*routine)(void))
Definition: thread.h:203
mpegvideodec.h
vc1_ttblk_codes
static const uint8_t vc1_ttblk_codes[3][8]
Definition: vc1_vlc_data.h:732
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
ff_wmv3_dc_scale_table
const uint8_t ff_wmv3_dc_scale_table[32]
Definition: vc1data.c:173
VC1DSPContext::vc1_inv_trans_8x4_dc
void(* vc1_inv_trans_8x4_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:42
h263dec.h
av_cold
#define av_cold
Definition: attributes.h:90
init_get_bits8
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:545
vc1_1ref_mvdata_bits
static const uint8_t vc1_1ref_mvdata_bits[4][72]
Definition: vc1_vlc_data.h:214
ff_msmp4_vc1_vlcs_init_once
av_cold void ff_msmp4_vc1_vlcs_init_once(void)
Definition: msmpeg4_vc1_data.c:56
VLCInitState
For static VLCs, the number of bits can often be hardcoded at each get_vlc2() callsite.
Definition: vlc.h:250
VC1DSPContext::sprite_v_double_twoscale
void(* sprite_v_double_twoscale)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1, const uint8_t *src2a, const uint8_t *src2b, int offset2, int alpha, int width)
Definition: vc1dsp.h:72
vc1_2mv_block_pattern_codes
static const uint8_t vc1_2mv_block_pattern_codes[4][4]
Definition: vc1_vlc_data.h:81
AVCodecContext::extradata_size
int extradata_size
Definition: avcodec.h:543
AVCodecContext::has_b_frames
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:744
ff_vc1_2mv_block_pattern_vlc
const VLCElem * ff_vc1_2mv_block_pattern_vlc[4]
Definition: vc1data.c:114
ff_er_frame_end
void ff_er_frame_end(ERContext *s, int *decode_error_flags)
Indicate that a frame has finished decoding and perform error concealment in case it has been enabled...
Definition: error_resilience.c:892
av_fast_realloc
void * av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
Reallocate the given buffer if it is not large enough, otherwise do nothing.
Definition: mem.c:495
ff_vc1_decoder
const FFCodec ff_vc1_decoder
Definition: vc1dec.c:1389
VC1_CODE_SLICE
@ VC1_CODE_SLICE
Definition: vc1_common.h:36
width
#define width
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:306
VC1Context::mb_type
uint8_t * mb_type[3]
Definition: vc1.h:262
ff_blockdsp_init
av_cold void ff_blockdsp_init(BlockDSPContext *c)
Definition: blockdsp.c:58
AV_PIX_FMT_DXVA2_VLD
@ AV_PIX_FMT_DXVA2_VLD
HW decoding through DXVA2, Picture.data[3] contains a LPDIRECT3DSURFACE9 pointer.
Definition: pixfmt.h:127
s
#define s(width, name)
Definition: cbs_vp9.c:198
VC1Context::res_sprite
int res_sprite
Simple/Main Profile sequence header.
Definition: vc1.h:181
VC1Context::res_fasttx
int res_fasttx
reserved, always 1
Definition: vc1.h:185
vc1_init_static
static av_cold void vc1_init_static(void)
Definition: vc1dec.c:472
vc1_if_mmv_mbmode_codes
static const uint8_t vc1_if_mmv_mbmode_codes[8][8]
Definition: vc1_vlc_data.h:121
VC1Context::mv_f
uint8_t * mv_f[2]
0: MV obtained from same field, 1: opposite field
Definition: vc1.h:347
vc1_ac_tables
static const uint32_t vc1_ac_tables[AC_MODES][186][2]
Definition: vc1_vlc_data.h:838
VC1DSPContext::sprite_h
void(* sprite_h)(uint8_t *dst, const uint8_t *src, int offset, int advance, int count)
Definition: vc1dsp.h:67
VC1Context::mb_type_base
uint8_t * mb_type_base
Definition: vc1.h:262
vc1_subblkpat_bits
static const uint8_t vc1_subblkpat_bits[3][15]
Definition: vc1_vlc_data.h:749
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts_bsf.c:365
VC1Context::x8
IntraX8Context x8
Definition: vc1.h:175
VC1Context::over_flags_plane
uint8_t * over_flags_plane
Overflags bitplane.
Definition: vc1.h:322
ff_mpeg_er_frame_start
void ff_mpeg_er_frame_start(MpegEncContext *s)
Definition: mpeg_er.c:47
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:40
ff_simple_idct48_add
void ff_simple_idct48_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: simple_idct.c:209
PROFILE_ADVANCED
@ PROFILE_ADVANCED
Definition: vc1_common.h:52
vc1_imode_bits
static const uint8_t vc1_imode_bits[7]
Definition: vc1_vlc_data.h:40
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
vc1_norm2_codes
static const uint8_t vc1_norm2_codes[4]
Definition: vc1_vlc_data.h:45
PICT_TOP_FIELD
#define PICT_TOP_FIELD
Definition: mpegutils.h:36
decode.h
get_bits.h
simple_idct.h
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
AV_CODEC_ID_VC1IMAGE
@ AV_CODEC_ID_VC1IMAGE
Definition: codec_id.h:204
vc1_norm6_bits
static const uint8_t vc1_norm6_bits[64]
Definition: vc1_vlc_data.h:59
ff_intrax8_common_init
av_cold int ff_intrax8_common_init(AVCodecContext *avctx, IntraX8Context *w, int16_t(*block)[64], int block_last_index[12], int mb_width, int mb_height)
Initialize IntraX8 frame decoder.
Definition: intrax8.c:688
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:272
ff_vc1_ttblk_vlc
const VLCElem * ff_vc1_ttblk_vlc[3]
Definition: vc1data.c:115
AVCodecContext::codec_id
enum AVCodecID codec_id
Definition: avcodec.h:451
VC1Context::top_blk_sh
int top_blk_sh
Either 3 or 0, positions of l/t in blk[].
Definition: vc1.h:238
VC1_INTFR_4MV_MBMODE_VLC_BITS
#define VC1_INTFR_4MV_MBMODE_VLC_BITS
Definition: vc1data.h:81
VC1Context::pq
uint8_t pq
Definition: vc1.h:236
VC1_1REF_MVDATA_VLC_BITS
#define VC1_1REF_MVDATA_VLC_BITS
Definition: vc1data.h:89
AVDISCARD_ALL
@ AVDISCARD_ALL
discard all
Definition: defs.h:219
ff_wmv3_decoder
const FFCodec ff_wmv3_decoder
AV_CODEC_ID_WMV3
@ AV_CODEC_ID_WMV3
Definition: codec_id.h:123
AV_ONCE_INIT
#define AV_ONCE_INIT
Definition: thread.h:201
VC1Context::forward_mb_plane
uint8_t * forward_mb_plane
bitplane for "forward" MBs
Definition: vc1.h:286
NULL
#define NULL
Definition: coverity.c:32
ff_vc1_cbpcy_p_vlc
const VLCElem * ff_vc1_cbpcy_p_vlc[4]
Definition: vc1data.c:111
ff_vc1_if_mmv_mbmode_vlc
const VLCElem * ff_vc1_if_mmv_mbmode_vlc[8]
Definition: vc1data.c:119
ff_simple_idct_add_int16_8bit
void ff_simple_idct_add_int16_8bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:64
AVCodecContext::color_range
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:1039
VC1Context::direct_mb_plane
uint8_t * direct_mb_plane
bitplane for "direct" MBs
Definition: vc1.h:285
VC1DSPContext::vc1_inv_trans_8x4
void(* vc1_inv_trans_8x4)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:38
ff_vc1_2ref_mvdata_vlc
const VLCElem * ff_vc1_2ref_mvdata_vlc[8]
Definition: vc1data.c:122
hwaccel_internal.h
ff_vc1_init_transposed_scantables
av_cold void ff_vc1_init_transposed_scantables(VC1Context *v)
Definition: vc1dec.c:457
vc1_cbpcy_p_codes
static const uint16_t vc1_cbpcy_p_codes[4][64]
Definition: vc1_vlc_data.h:474
VC1Context::field_mode
int field_mode
1 for interlaced field pictures
Definition: vc1.h:349
AVCHROMA_LOC_LEFT
@ AVCHROMA_LOC_LEFT
MPEG-2/4 4:2:0, H.264 default for 4:2:0.
Definition: pixfmt.h:694
ff_vc1_decode_blocks
void ff_vc1_decode_blocks(VC1Context *v)
Definition: vc1_block.c:2967
VC1Context::blk_mv_type_base
uint8_t * blk_mv_type_base
Definition: vc1.h:346
ff_intrax8_common_end
av_cold void ff_intrax8_common_end(IntraX8Context *w)
Destroy IntraX8 frame structure.
Definition: intrax8.c:727
VC1Context::mvrange
uint8_t mvrange
Ranges:
Definition: vc1.h:280
VC1_CODE_SEQHDR
@ VC1_CODE_SEQHDR
Definition: vc1_common.h:40
VC1Context::block
int16_t(* block)[6][64]
Definition: vc1.h:386
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:279
get_bits1
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:388
profiles.h
IS_MARKER
#define IS_MARKER(state)
Definition: dca_parser.c:51
VC1_CODE_FIELD
@ VC1_CODE_FIELD
Definition: vc1_common.h:37
VC1_CODE_ENTRYPOINT
@ VC1_CODE_ENTRYPOINT
Definition: vc1_common.h:39
VC1Context::vc1dsp
VC1DSPContext vc1dsp
Definition: vc1.h:177
VC1Context::cbpcy_vlc
const VLCElem * cbpcy_vlc
CBPCY VLC table.
Definition: vc1.h:282
vc1_intfr_non4mv_mbmode_codes
static const uint8_t vc1_intfr_non4mv_mbmode_codes[4][9]
Definition: vc1_vlc_data.h:105
abs
#define abs(x)
Definition: cuda_runtime.h:35
VC1Context::luma_mv_base
int16_t(* luma_mv_base)[2]
Definition: vc1.h:390
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
VC1_ICBPCY_VLC_BITS
#define VC1_ICBPCY_VLC_BITS
Definition: vc1data.h:71
VC1_CODE_FRAME
@ VC1_CODE_FRAME
Definition: vc1_common.h:38
AVCodecContext::level
int level
Encoding level descriptor.
Definition: avcodec.h:1740
AVCOL_RANGE_UNSPECIFIED
@ AVCOL_RANGE_UNSPECIFIED
Definition: pixfmt.h:639
AVOnce
#define AVOnce
Definition: thread.h:200
VC1DSPContext::vc1_inv_trans_4x8_dc
void(* vc1_inv_trans_4x8_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:43
VC1Context::h264chroma
H264ChromaContext h264chroma
Definition: vc1.h:176
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
VC1Context::fieldtx_plane
uint8_t * fieldtx_plane
Definition: vc1.h:343
ff_vc1_init_common
av_cold void ff_vc1_init_common(VC1Context *v)
Init VC-1 specific tables and VC1Context members.
Definition: vc1dec.c:567
ff_vc1_adv_interlaced_8x8_zz
const uint8_t ff_vc1_adv_interlaced_8x8_zz[64]
Definition: vc1data.c:207
ff_vc1dsp_init
av_cold void ff_vc1dsp_init(VC1DSPContext *dsp)
Definition: vc1dsp.c:974
ff_dlog
#define ff_dlog(a,...)
Definition: tableprint_vlc.h:28
AVDISCARD_NONKEY
@ AVDISCARD_NONKEY
discard all frames except keyframes
Definition: defs.h:218
ff_vc1_icbpcy_vlc
const VLCElem * ff_vc1_icbpcy_vlc[8]
Definition: vc1data.c:112
VC1Context::mv_f_next
uint8_t * mv_f_next[2]
Definition: vc1.h:348
f
f
Definition: af_crystalizer.c:121
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:442
ff_get_buffer
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1617
VC1_TTBLK_VLC_BITS
#define VC1_TTBLK_VLC_BITS
Definition: vc1data.h:77
VC1Context::is_intra
uint8_t * is_intra
Definition: vc1.h:389
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
AV_CODEC_FLAG_GRAY
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:318
AVPacket::size
int size
Definition: packet.h:492
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:106
av_frame_ref
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
Definition: frame.c:361
codec_internal.h
ff_vc1_1ref_mvdata_vlc
const VLCElem * ff_vc1_1ref_mvdata_vlc[4]
Definition: vc1data.c:121
VC1Context::ttblk_base
int * ttblk_base
Definition: vc1.h:257
VC1Context::mb_off
int mb_off
Definition: vc1.h:361
ff_wmv3image_decoder
const FFCodec ff_wmv3image_decoder
ff_vc1_mv_diff_vlc
const VLCElem * ff_vc1_mv_diff_vlc[4]
Definition: vc1data.c:110
vc1_norm6_codes
static const uint16_t vc1_norm6_codes[64]
Definition: vc1_vlc_data.h:52
size
int size
Definition: twinvq_data.h:10344
VC1Context::zzi_8x8
uint8_t zzi_8x8[64]
Definition: vc1.h:345
VLCElem
Definition: vlc.h:32
vc1_if_1mv_mbmode_codes
static const uint8_t vc1_if_1mv_mbmode_codes[8][6]
Definition: vc1_vlc_data.h:143
AV_RB32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:96
ff_vc1_intfr_4mv_mbmode_vlc
const VLCElem * ff_vc1_intfr_4mv_mbmode_vlc[4]
Definition: vc1data.c:117
VC1Context::sprite_width
int sprite_width
Definition: vc1.h:378
ff_vc1_ac_coeff_table
const VLCElem * ff_vc1_ac_coeff_table[8]
Definition: vc1data.c:124
vc1_ttblk_bits
static const uint8_t vc1_ttblk_bits[3][8]
Definition: vc1_vlc_data.h:737
AVCodecHWConfigInternal
Definition: hwconfig.h:25
vc1_icbpcy_p_bits
static const uint8_t vc1_icbpcy_p_bits[8][63]
Definition: vc1_vlc_data.h:612
ff_mpv_frame_start
int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
generic function called after decoding the header and before a frame is decoded.
Definition: mpegvideo_dec.c:295
ff_mpeg_flush
void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo_dec.c:549
vc1data.h
HWACCEL_D3D11VA
#define HWACCEL_D3D11VA(codec)
Definition: hwconfig.h:78
VC1DSPContext::sprite_v_single
void(* sprite_v_single)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset, int width)
Definition: vc1dsp.h:68
attributes.h
AV_PIX_FMT_D3D11
@ AV_PIX_FMT_D3D11
Hardware surfaces for Direct3D11.
Definition: pixfmt.h:333
HWACCEL_NVDEC
#define HWACCEL_NVDEC(codec)
Definition: hwconfig.h:68
AV_PIX_FMT_VAAPI
@ AV_PIX_FMT_VAAPI
Hardware acceleration through VA-API, data[3] contains a VASurfaceID.
Definition: pixfmt.h:119
VC1DSPContext::vc1_inv_trans_8x8
void(* vc1_inv_trans_8x8)(int16_t *b)
Definition: vc1dsp.h:37
VC1Context::sr_rows
uint8_t * sr_rows[2][2]
Sprite resizer line cache.
Definition: vc1.h:379
VC1_IMODE_VLC_BITS
#define VC1_IMODE_VLC_BITS
Definition: vc1data.h:58
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:191
AV_CODEC_ID_MSS2
@ AV_CODEC_ID_MSS2
Definition: codec_id.h:219
VC1_IF_1MV_MBMODE_VLC_BITS
#define VC1_IF_1MV_MBMODE_VLC_BITS
Definition: vc1data.h:87
AV_PIX_FMT_VDPAU
@ AV_PIX_FMT_VDPAU
HW acceleration through VDPAU, Picture.data[3] contains a VdpVideoSurface.
Definition: pixfmt.h:187
av_get_picture_type_char
char av_get_picture_type_char(enum AVPictureType pict_type)
Return a single letter to describe the given picture type pict_type.
Definition: utils.c:40
ff_init_scantable
av_cold void ff_init_scantable(const uint8_t *permutation, ScanTable *st, const uint8_t *src_scantable)
Definition: mpegvideo.c:321
MpegEncContext::current_picture_ptr
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:173
vc1_get_format
static enum AVPixelFormat vc1_get_format(AVCodecContext *avctx)
Definition: vc1dec.c:409
ff_simple_idct_int16_8bit
void ff_simple_idct_int16_8bit(int16_t *block)
FMT_H263
@ FMT_H263
Definition: mpegutils.h:119
VC1DSPContext::sprite_v_double_onescale
void(* sprite_v_double_onescale)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1, const uint8_t *src2a, int alpha, int width)
Definition: vc1dsp.h:70
vc1_if_1mv_mbmode_bits
static const uint8_t vc1_if_1mv_mbmode_bits[8][6]
Definition: vc1_vlc_data.h:153
ff_vc1_intfr_non4mv_mbmode_vlc
const VLCElem * ff_vc1_intfr_non4mv_mbmode_vlc[4]
Definition: vc1data.c:118
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:245
VC1DSPContext::vc1_unescape_buffer
int(* vc1_unescape_buffer)(const uint8_t *src, int size, uint8_t *dst)
Definition: vc1dsp.h:85
AVCodecContext::extradata
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:542
ff_mpv_decode_init
void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
Initialize the given MpegEncContext for decoding.
Definition: mpegvideo_dec.c:45
vc1_4mv_block_pattern_bits
static const uint8_t vc1_4mv_block_pattern_bits[4][16]
Definition: vc1_vlc_data.h:73
VC1_4MV_BLOCK_PATTERN_VLC_BITS
#define VC1_4MV_BLOCK_PATTERN_VLC_BITS
Definition: vc1data.h:73
ff_vc1_decode_entry_point
int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
Definition: vc1.c:501
ff_vc1_parse_frame_header_adv
int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:844
VC1Context::s
MpegEncContext s
Definition: vc1.h:174
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
ff_vc1_ac_sizes
const int ff_vc1_ac_sizes[AC_MODES]
Definition: vc1_vlc_data.h:1059
av_frame_unref
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:622
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:254
VC1Context::pic_header_flag
int pic_header_flag
Definition: vc1.h:366
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:194
VC1Context::ttblk
int * ttblk
Transform type at the block level.
Definition: vc1.h:257
AV_CODEC_ID_VC1
@ AV_CODEC_ID_VC1
Definition: codec_id.h:122
VC1_NORM6_VLC_BITS
#define VC1_NORM6_VLC_BITS
Definition: vc1data.h:62
AVCodecContext::height
int height
Definition: avcodec.h:621
VC1Context::is_intra_base
uint8_t * is_intra_base
Definition: vc1.h:389
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:658
AV_FRAME_FLAG_INTERLACED
#define AV_FRAME_FLAG_INTERLACED
A flag to mark frames whose content is interlaced.
Definition: frame.h:636
AVCOL_RANGE_MPEG
@ AVCOL_RANGE_MPEG
Narrow or limited range content.
Definition: pixfmt.h:656
avcodec.h
VC1Context::second_field
int second_field
Definition: vc1.h:351
vc1_if_mmv_mbmode_bits
static const uint8_t vc1_if_mmv_mbmode_bits[8][8]
Definition: vc1_vlc_data.h:131
ret
ret
Definition: filter_design.txt:187
state
static struct @364 state
vc1_icbpcy_p_codes
static const uint16_t vc1_icbpcy_p_codes[8][63]
Definition: vc1_vlc_data.h:529
FFSWAP
#define FFSWAP(type, a, b)
Definition: macros.h:52
VC1Context::sprite_output_frame
AVFrame * sprite_output_frame
Definition: vc1.h:377
VC1Context::output_width
int output_width
Definition: vc1.h:378
VC1Context::color_prim
int color_prim
8 bits, chroma coordinates of the color primaries
Definition: vc1.h:204
hwaccel
static const char * hwaccel
Definition: ffplay.c:356
VC1Context::mv_f_next_base
uint8_t * mv_f_next_base
Definition: vc1.h:348
vc1_mv_diff_codes
static const uint16_t vc1_mv_diff_codes[4][73]
Definition: vc1_vlc_data.h:756
AV_INPUT_BUFFER_PADDING_SIZE
#define AV_INPUT_BUFFER_PADDING_SIZE
Definition: defs.h:40
ff_vc1_subblkpat_vlc
const VLCElem * ff_vc1_subblkpat_vlc[3]
Definition: vc1data.c:116
VC1_2MV_BLOCK_PATTERN_VLC_BITS
#define VC1_2MV_BLOCK_PATTERN_VLC_BITS
Definition: vc1data.h:75
AVCodecContext
main external API structure.
Definition: avcodec.h:441
ff_vc1_imode_vlc
VLCElem ff_vc1_imode_vlc[1<< VC1_IMODE_VLC_BITS]
Definition: vc1data.c:105
VC1Context::p_frame_skipped
int p_frame_skipped
Definition: vc1.h:382
AV_PICTURE_TYPE_B
@ AV_PICTURE_TYPE_B
Bi-dir predicted.
Definition: avutil.h:281
vc1_4mv_block_pattern_codes
static const uint8_t vc1_4mv_block_pattern_codes[4][16]
Definition: vc1_vlc_data.h:67
Picture::f
struct AVFrame * f
Definition: mpegpicture.h:47
VC1Context::tff
uint8_t tff
Definition: vc1.h:310
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
VLC_INIT_STATIC_TABLE
#define VLC_INIT_STATIC_TABLE(vlc_table, nb_bits, nb_codes, bits, bits_wrap, bits_size, codes, codes_wrap, codes_size, flags)
Definition: vlc.h:308
AVCodecContext::profile
int profile
profile
Definition: avcodec.h:1596
ffhwaccel
static const FFHWAccel * ffhwaccel(const AVHWAccel *codec)
Definition: hwaccel_internal.h:166
VC1_NORM2_VLC_BITS
#define VC1_NORM2_VLC_BITS
Definition: vc1data.h:60
vc1_ttmb_codes
static const uint16_t vc1_ttmb_codes[3][16]
Definition: vc1_vlc_data.h:671
VC1Context::profile
int profile
Sequence header data for all Profiles TODO: choose between ints, uint8_ts and monobit flags.
Definition: vc1.h:216
ff_mpv_frame_end
void ff_mpv_frame_end(MpegEncContext *s)
Definition: mpegvideo_dec.c:496
AV_CODEC_CAP_DELAY
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: codec.h:76
ff_h264chroma_init
av_cold void ff_h264chroma_init(H264ChromaContext *c, int bit_depth)
Definition: h264chroma.c:41
ff_vc1_profiles
const AVProfile ff_vc1_profiles[]
Definition: profiles.c:144
VC1Context::matrix_coef
int matrix_coef
8 bits, Color primaries->YCbCr transform matrix
Definition: vc1.h:206
AVCodecContext::debug
int debug
debug
Definition: avcodec.h:1388
av_clip_uint16
#define av_clip_uint16
Definition: common.h:108
VC1Context::bi_type
int bi_type
Definition: vc1.h:383
VC1Context::mv_f_base
uint8_t * mv_f_base
Definition: vc1.h:347
AVCodecContext::coded_width
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:636
VC1Context::fcm
enum FrameCodingMode fcm
Frame decoding info for Advanced profile.
Definition: vc1.h:307
AV_PICTURE_TYPE_P
@ AV_PICTURE_TYPE_P
Predicted.
Definition: avutil.h:280
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
ff_vlc_init_tables
static const VLCElem * ff_vlc_init_tables(VLCInitState *state, int nb_bits, int nb_codes, const void *bits, int bits_wrap, int bits_size, const void *codes, int codes_wrap, int codes_size, int flags)
Definition: vlc.h:284
ff_vc1_ttmb_vlc
const VLCElem * ff_vc1_ttmb_vlc[3]
Definition: vc1data.c:109
vc1_2ref_mvdata_codes
static const uint32_t vc1_2ref_mvdata_codes[8][126]
Definition: vc1_vlc_data.h:242
AVCodecContext::max_b_frames
int max_b_frames
maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 re...
Definition: avcodec.h:720
msmpeg4_vc1_data.h
vc1_vlc_data.h
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:36
ff_vc1_norm2_vlc
VLCElem ff_vc1_norm2_vlc[1<< VC1_NORM2_VLC_BITS]
Definition: vc1data.c:106
ff_vc1_4mv_block_pattern_vlc
const VLCElem * ff_vc1_4mv_block_pattern_vlc[4]
Definition: vc1data.c:113
av_free
#define av_free(p)
Definition: tableprint_vlc.h:33
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
VLC_INIT_STATE
#define VLC_INIT_STATE(_table)
Definition: vlc.h:255
alpha
static const int16_t alpha[]
Definition: ilbcdata.h:55
VC1Context::level
int level
Advanced Profile.
Definition: vc1.h:195
AVPacket
This structure stores compressed data.
Definition: packet.h:468
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:468
VC1Context::acpred_plane
uint8_t * acpred_plane
AC prediction flags bitplane.
Definition: vc1.h:320
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
AV_PICTURE_TYPE_BI
@ AV_PICTURE_TYPE_BI
BI type.
Definition: avutil.h:285
VC1_2REF_MVDATA_VLC_BITS
#define VC1_2REF_MVDATA_VLC_BITS
Definition: vc1data.h:91
HWACCEL_VAAPI
#define HWACCEL_VAAPI(codec)
Definition: hwconfig.h:70
vc1_imode_codes
static const uint8_t vc1_imode_codes[7]
Definition: vc1_vlc_data.h:37
mpeg_er.h
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:621
imgutils.h
vc1_decode_init_alloc_tables
static av_cold int vc1_decode_init_alloc_tables(VC1Context *v)
Definition: vc1dec.c:334
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:385
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
VC1Context::transfer_char
int transfer_char
8 bits, Opto-electronic transfer characteristics
Definition: vc1.h:205
ff_vc1_decode_end
av_cold int ff_vc1_decode_end(AVCodecContext *avctx)
Close a VC1/WMV3 decoder.
Definition: vc1dec.c:759
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
vc1_decode_frame
static int vc1_decode_frame(AVCodecContext *avctx, AVFrame *pict, int *got_frame, AVPacket *avpkt)
Decode a VC1/WMV3 frame.
Definition: vc1dec.c:792
VC1Context::blk_mv_type
uint8_t * blk_mv_type
0: frame MV, 1: field MV (interlaced frame)
Definition: vc1.h:346
VC1_MV_DIFF_VLC_BITS
#define VC1_MV_DIFF_VLC_BITS
Definition: vc1data.h:67
AV_CODEC_ID_WMV3IMAGE
@ AV_CODEC_ID_WMV3IMAGE
Definition: codec_id.h:203
av_image_check_size
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
Definition: imgutils.c:318
vc1_1ref_mvdata_codes
static const uint32_t vc1_1ref_mvdata_codes[4][72]
Definition: vc1_vlc_data.h:167
transpose
#define transpose(x)
VC1DSPContext::vc1_inv_trans_4x8
void(* vc1_inv_trans_4x8)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:39
AVDISCARD_NONREF
@ AVDISCARD_NONREF
discard all non reference
Definition: defs.h:215
VC1Context::blocks_off
int blocks_off
Definition: vc1.h:361
VC1_CODE_ENDOFSEQ
@ VC1_CODE_ENDOFSEQ
Definition: vc1_common.h:35
MpegEncContext
MpegEncContext.
Definition: mpegvideo.h:67
ff_wmv1_scantable
const uint8_t ff_wmv1_scantable[WMV1_SCANTABLE_COUNT][64]
Definition: msmpeg4_vc1_data.c:220
VC1Context::rff
uint8_t rff
Definition: vc1.h:310
ff_vc1_decode_init
av_cold int ff_vc1_decode_init(AVCodecContext *avctx)
Definition: vc1dec.c:423
vc1_mv_diff_bits
static const uint8_t vc1_mv_diff_bits[4][73]
Definition: vc1_vlc_data.h:806