[FFmpeg-cvslog] huffyuv: split encoder and decoder into separate files.
Anton Khirnov
git at videolan.org
Sun Dec 23 14:59:10 CET 2012
ffmpeg | branch: master | Anton Khirnov <anton at khirnov.net> | Thu Dec 6 14:06:46 2012 +0100| [2ca5ca2957607cf9604cc6068a9ebc898ff37b06] | committer: Anton Khirnov
huffyuv: split encoder and decoder into separate files.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2ca5ca2957607cf9604cc6068a9ebc898ff37b06
---
libavcodec/Makefile | 8 +-
libavcodec/huffyuv.c | 1434 +----------------------------------------------
libavcodec/huffyuv.h | 92 +++
libavcodec/huffyuvdec.c | 782 ++++++++++++++++++++++++++
libavcodec/huffyuvenc.c | 633 +++++++++++++++++++++
5 files changed, 1525 insertions(+), 1424 deletions(-)
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index de638dd..1ae17cd 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -167,8 +167,8 @@ OBJS-$(CONFIG_EIGHTSVX_FIB_DECODER) += 8svx.o
OBJS-$(CONFIG_ESCAPE124_DECODER) += escape124.o
OBJS-$(CONFIG_FFV1_DECODER) += ffv1dec.o ffv1.o
OBJS-$(CONFIG_FFV1_ENCODER) += ffv1enc.o ffv1.o
-OBJS-$(CONFIG_FFVHUFF_DECODER) += huffyuv.o
-OBJS-$(CONFIG_FFVHUFF_ENCODER) += huffyuv.o
+OBJS-$(CONFIG_FFVHUFF_DECODER) += huffyuv.o huffyuvdec.o
+OBJS-$(CONFIG_FFVHUFF_ENCODER) += huffyuv.o huffyuvenc.o
OBJS-$(CONFIG_FLAC_DECODER) += flacdec.o flacdata.o flac.o flacdsp.o
OBJS-$(CONFIG_FLAC_ENCODER) += flacenc.o flacdata.o flac.o flacdsp.o
OBJS-$(CONFIG_FLASHSV_DECODER) += flashsv.o
@@ -199,8 +199,8 @@ OBJS-$(CONFIG_H264_DECODER) += h264.o \
OBJS-$(CONFIG_H264_DXVA2_HWACCEL) += dxva2_h264.o
OBJS-$(CONFIG_H264_VAAPI_HWACCEL) += vaapi_h264.o
OBJS-$(CONFIG_H264_VDA_HWACCEL) += vda_h264.o
-OBJS-$(CONFIG_HUFFYUV_DECODER) += huffyuv.o
-OBJS-$(CONFIG_HUFFYUV_ENCODER) += huffyuv.o
+OBJS-$(CONFIG_HUFFYUV_DECODER) += huffyuv.o huffyuvdec.o
+OBJS-$(CONFIG_HUFFYUV_ENCODER) += huffyuv.o huffyuvenc.o
OBJS-$(CONFIG_IAC_DECODER) += imc.o
OBJS-$(CONFIG_IDCIN_DECODER) += idcinvideo.o
OBJS-$(CONFIG_IFF_BYTERUN1_DECODER) += iff.o
diff --git a/libavcodec/huffyuv.c b/libavcodec/huffyuv.c
index 511b326..58559f1 100644
--- a/libavcodec/huffyuv.c
+++ b/libavcodec/huffyuv.c
@@ -28,184 +28,15 @@
* huffyuv codec for libavcodec.
*/
-#include "avcodec.h"
-#include "get_bits.h"
-#include "put_bits.h"
-#include "dsputil.h"
-#include "thread.h"
-#include "huffman.h"
-
-#define VLC_BITS 11
-
-#if HAVE_BIGENDIAN
-#define B 3
-#define G 2
-#define R 1
-#define A 0
-#else
-#define B 0
-#define G 1
-#define R 2
-#define A 3
-#endif
-
-typedef enum Predictor {
- LEFT= 0,
- PLANE,
- MEDIAN,
-} Predictor;
-
-typedef struct HYuvContext {
- AVCodecContext *avctx;
- Predictor predictor;
- GetBitContext gb;
- PutBitContext pb;
- int interlaced;
- int decorrelate;
- int bitstream_bpp;
- int version;
- int yuy2; //use yuy2 instead of 422P
- int bgr32; //use bgr32 instead of bgr24
- int width, height;
- int flags;
- int context;
- int picture_number;
- int last_slice_end;
- uint8_t *temp[3];
- uint64_t stats[3][256];
- uint8_t len[3][256];
- uint32_t bits[3][256];
- uint32_t pix_bgr_map[1<<VLC_BITS];
- VLC vlc[6]; //Y,U,V,YY,YU,YV
- AVFrame picture;
- uint8_t *bitstream_buffer;
- unsigned int bitstream_buffer_size;
- DSPContext dsp;
-} HYuvContext;
-
-#define classic_shift_luma_table_size 42
-static const unsigned char classic_shift_luma[classic_shift_luma_table_size + FF_INPUT_BUFFER_PADDING_SIZE] = {
- 34,36,35,69,135,232,9,16,10,24,11,23,12,16,13,10,14,8,15,8,
- 16,8,17,20,16,10,207,206,205,236,11,8,10,21,9,23,8,8,199,70,
- 69,68, 0
-};
-
-#define classic_shift_chroma_table_size 59
-static const unsigned char classic_shift_chroma[classic_shift_chroma_table_size + FF_INPUT_BUFFER_PADDING_SIZE] = {
- 66,36,37,38,39,40,41,75,76,77,110,239,144,81,82,83,84,85,118,183,
- 56,57,88,89,56,89,154,57,58,57,26,141,57,56,58,57,58,57,184,119,
- 214,245,116,83,82,49,80,79,78,77,44,75,41,40,39,38,37,36,34, 0
-};
-
-static const unsigned char classic_add_luma[256] = {
- 3, 9, 5, 12, 10, 35, 32, 29, 27, 50, 48, 45, 44, 41, 39, 37,
- 73, 70, 68, 65, 64, 61, 58, 56, 53, 50, 49, 46, 44, 41, 38, 36,
- 68, 65, 63, 61, 58, 55, 53, 51, 48, 46, 45, 43, 41, 39, 38, 36,
- 35, 33, 32, 30, 29, 27, 26, 25, 48, 47, 46, 44, 43, 41, 40, 39,
- 37, 36, 35, 34, 32, 31, 30, 28, 27, 26, 24, 23, 22, 20, 19, 37,
- 35, 34, 33, 31, 30, 29, 27, 26, 24, 23, 21, 20, 18, 17, 15, 29,
- 27, 26, 24, 22, 21, 19, 17, 16, 14, 26, 25, 23, 21, 19, 18, 16,
- 15, 27, 25, 23, 21, 19, 17, 16, 14, 26, 25, 23, 21, 18, 17, 14,
- 12, 17, 19, 13, 4, 9, 2, 11, 1, 7, 8, 0, 16, 3, 14, 6,
- 12, 10, 5, 15, 18, 11, 10, 13, 15, 16, 19, 20, 22, 24, 27, 15,
- 18, 20, 22, 24, 26, 14, 17, 20, 22, 24, 27, 15, 18, 20, 23, 25,
- 28, 16, 19, 22, 25, 28, 32, 36, 21, 25, 29, 33, 38, 42, 45, 49,
- 28, 31, 34, 37, 40, 42, 44, 47, 49, 50, 52, 54, 56, 57, 59, 60,
- 62, 64, 66, 67, 69, 35, 37, 39, 40, 42, 43, 45, 47, 48, 51, 52,
- 54, 55, 57, 59, 60, 62, 63, 66, 67, 69, 71, 72, 38, 40, 42, 43,
- 46, 47, 49, 51, 26, 28, 30, 31, 33, 34, 18, 19, 11, 13, 7, 8,
-};
-
-static const unsigned char classic_add_chroma[256] = {
- 3, 1, 2, 2, 2, 2, 3, 3, 7, 5, 7, 5, 8, 6, 11, 9,
- 7, 13, 11, 10, 9, 8, 7, 5, 9, 7, 6, 4, 7, 5, 8, 7,
- 11, 8, 13, 11, 19, 15, 22, 23, 20, 33, 32, 28, 27, 29, 51, 77,
- 43, 45, 76, 81, 46, 82, 75, 55, 56,144, 58, 80, 60, 74,147, 63,
- 143, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
- 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 27, 30, 21, 22,
- 17, 14, 5, 6,100, 54, 47, 50, 51, 53,106,107,108,109,110,111,
- 112,113,114,115, 4,117,118, 92, 94,121,122, 3,124,103, 2, 1,
- 0,129,130,131,120,119,126,125,136,137,138,139,140,141,142,134,
- 135,132,133,104, 64,101, 62, 57,102, 95, 93, 59, 61, 28, 97, 96,
- 52, 49, 48, 29, 32, 25, 24, 46, 23, 98, 45, 44, 43, 20, 42, 41,
- 19, 18, 99, 40, 15, 39, 38, 16, 13, 12, 11, 37, 10, 9, 8, 36,
- 7,128,127,105,123,116, 35, 34, 33,145, 31, 79, 42,146, 78, 26,
- 83, 48, 49, 50, 44, 47, 26, 31, 30, 18, 17, 19, 21, 24, 25, 13,
- 14, 16, 17, 18, 20, 21, 12, 14, 15, 9, 10, 6, 9, 6, 5, 8,
- 6, 12, 8, 10, 7, 9, 6, 4, 6, 2, 2, 3, 3, 3, 3, 2,
-};
-
-static inline int sub_left_prediction(HYuvContext *s, uint8_t *dst,
- uint8_t *src, int w, int left)
-{
- int i;
- if (w < 32) {
- for (i = 0; i < w; i++) {
- const int temp = src[i];
- dst[i] = temp - left;
- left = temp;
- }
- return left;
- } else {
- for (i = 0; i < 16; i++) {
- const int temp = src[i];
- dst[i] = temp - left;
- left = temp;
- }
- s->dsp.diff_bytes(dst + 16, src + 16, src + 15, w - 16);
- return src[w-1];
- }
-}
+#include <stdint.h>
-static inline void sub_left_prediction_bgr32(HYuvContext *s, uint8_t *dst,
- uint8_t *src, int w,
- int *red, int *green, int *blue)
-{
- int i;
- int r,g,b;
- r = *red;
- g = *green;
- b = *blue;
-
- for (i = 0; i < FFMIN(w, 4); i++) {
- const int rt = src[i * 4 + R];
- const int gt = src[i * 4 + G];
- const int bt = src[i * 4 + B];
- dst[i * 4 + R] = rt - r;
- dst[i * 4 + G] = gt - g;
- dst[i * 4 + B] = bt - b;
- r = rt;
- g = gt;
- b = bt;
- }
-
- s->dsp.diff_bytes(dst + 16, src + 16, src + 12, w * 4 - 16);
+#include "libavutil/mem.h"
- *red = src[(w - 1) * 4 + R];
- *green = src[(w - 1) * 4 + G];
- *blue = src[(w - 1) * 4 + B];
-}
-
-static int read_len_table(uint8_t *dst, GetBitContext *gb)
-{
- int i, val, repeat;
-
- for (i = 0; i < 256;) {
- repeat = get_bits(gb, 3);
- val = get_bits(gb, 5);
- if (repeat == 0)
- repeat = get_bits(gb, 8);
- if (i + repeat > 256 || get_bits_left(gb) < 0) {
- av_log(NULL, AV_LOG_ERROR, "Error reading huffman table\n");
- return -1;
- }
- while (repeat--)
- dst[i++] = val;
- }
- return 0;
-}
+#include "avcodec.h"
+#include "dsputil.h"
+#include "huffyuv.h"
-static int generate_bits_table(uint32_t *dst, const uint8_t *len_table)
+int ff_huffyuv_generate_bits_table(uint32_t *dst, const uint8_t *len_table)
{
int len, index;
uint32_t bits = 0;
@@ -224,150 +55,25 @@ static int generate_bits_table(uint32_t *dst, const uint8_t *len_table)
return 0;
}
-static void generate_joint_tables(HYuvContext *s)
-{
- uint16_t symbols[1 << VLC_BITS];
- uint16_t bits[1 << VLC_BITS];
- uint8_t len[1 << VLC_BITS];
- if (s->bitstream_bpp < 24) {
- int p, i, y, u;
- for (p = 0; p < 3; p++) {
- for (i = y = 0; y < 256; y++) {
- int len0 = s->len[0][y];
- int limit = VLC_BITS - len0;
- if(limit <= 0)
- continue;
- for (u = 0; u < 256; u++) {
- int len1 = s->len[p][u];
- if (len1 > limit)
- continue;
- len[i] = len0 + len1;
- bits[i] = (s->bits[0][y] << len1) + s->bits[p][u];
- symbols[i] = (y << 8) + u;
- if(symbols[i] != 0xffff) // reserved to mean "invalid"
- i++;
- }
- }
- ff_free_vlc(&s->vlc[3 + p]);
- ff_init_vlc_sparse(&s->vlc[3 + p], VLC_BITS, i, len, 1, 1,
- bits, 2, 2, symbols, 2, 2, 0);
- }
- } else {
- uint8_t (*map)[4] = (uint8_t(*)[4])s->pix_bgr_map;
- int i, b, g, r, code;
- int p0 = s->decorrelate;
- int p1 = !s->decorrelate;
- // restrict the range to +/-16 because that's pretty much guaranteed to
- // cover all the combinations that fit in 11 bits total, and it doesn't
- // matter if we miss a few rare codes.
- for (i = 0, g = -16; g < 16; g++) {
- int len0 = s->len[p0][g & 255];
- int limit0 = VLC_BITS - len0;
- if (limit0 < 2)
- continue;
- for (b = -16; b < 16; b++) {
- int len1 = s->len[p1][b & 255];
- int limit1 = limit0 - len1;
- if (limit1 < 1)
- continue;
- code = (s->bits[p0][g & 255] << len1) + s->bits[p1][b & 255];
- for (r = -16; r < 16; r++) {
- int len2 = s->len[2][r & 255];
- if (len2 > limit1)
- continue;
- len[i] = len0 + len1 + len2;
- bits[i] = (code << len2) + s->bits[2][r & 255];
- if (s->decorrelate) {
- map[i][G] = g;
- map[i][B] = g + b;
- map[i][R] = g + r;
- } else {
- map[i][B] = g;
- map[i][G] = b;
- map[i][R] = r;
- }
- i++;
- }
- }
- }
- ff_free_vlc(&s->vlc[3]);
- init_vlc(&s->vlc[3], VLC_BITS, i, len, 1, 1, bits, 2, 2, 0);
- }
-}
-
-static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length)
-{
- GetBitContext gb;
- int i;
-
- init_get_bits(&gb, src, length * 8);
-
- for (i = 0; i < 3; i++) {
- if (read_len_table(s->len[i], &gb) < 0)
- return -1;
- if (generate_bits_table(s->bits[i], s->len[i]) < 0) {
- return -1;
- }
- ff_free_vlc(&s->vlc[i]);
- init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
- s->bits[i], 4, 4, 0);
- }
-
- generate_joint_tables(s);
-
- return (get_bits_count(&gb) + 7) / 8;
-}
-
-static int read_old_huffman_tables(HYuvContext *s)
-{
- GetBitContext gb;
- int i;
-
- init_get_bits(&gb, classic_shift_luma,
- classic_shift_luma_table_size * 8);
- if (read_len_table(s->len[0], &gb) < 0)
- return -1;
-
- init_get_bits(&gb, classic_shift_chroma,
- classic_shift_chroma_table_size * 8);
- if (read_len_table(s->len[1], &gb) < 0)
- return -1;
-
- for(i=0; i<256; i++) s->bits[0][i] = classic_add_luma [i];
- for(i=0; i<256; i++) s->bits[1][i] = classic_add_chroma[i];
-
- if (s->bitstream_bpp >= 24) {
- memcpy(s->bits[1], s->bits[0], 256 * sizeof(uint32_t));
- memcpy(s->len[1] , s->len [0], 256 * sizeof(uint8_t));
- }
- memcpy(s->bits[2], s->bits[1], 256 * sizeof(uint32_t));
- memcpy(s->len[2] , s->len [1], 256 * sizeof(uint8_t));
-
- for (i = 0; i < 3; i++) {
- ff_free_vlc(&s->vlc[i]);
- init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
- s->bits[i], 4, 4, 0);
- }
-
- generate_joint_tables(s);
-
- return 0;
-}
-
-static av_cold void alloc_temp(HYuvContext *s)
+av_cold int ff_huffyuv_alloc_temp(HYuvContext *s)
{
int i;
if (s->bitstream_bpp<24) {
for (i=0; i<3; i++) {
s->temp[i]= av_malloc(s->width + 16);
+ if (!s->temp[i])
+ return AVERROR(ENOMEM);
}
} else {
s->temp[0]= av_mallocz(4*s->width + 16);
+ if (!s->temp[0])
+ return AVERROR(ENOMEM);
}
+ return 0;
}
-static av_cold int common_init(AVCodecContext *avctx)
+av_cold void ff_huffyuv_common_init(AVCodecContext *avctx)
{
HYuvContext *s = avctx->priv_data;
@@ -379,1125 +85,13 @@ static av_cold int common_init(AVCodecContext *avctx)
s->width = avctx->width;
s->height = avctx->height;
assert(s->width>0 && s->height>0);
-
- return 0;
-}
-
-#if CONFIG_HUFFYUV_DECODER || CONFIG_FFVHUFF_DECODER
-static av_cold int decode_init(AVCodecContext *avctx)
-{
- HYuvContext *s = avctx->priv_data;
-
- common_init(avctx);
- memset(s->vlc, 0, 3 * sizeof(VLC));
-
- avctx->coded_frame = &s->picture;
- s->interlaced = s->height > 288;
-
- s->bgr32 = 1;
-
- if (avctx->extradata_size) {
- if ((avctx->bits_per_coded_sample & 7) &&
- avctx->bits_per_coded_sample != 12)
- s->version = 1; // do such files exist at all?
- else
- s->version = 2;
- } else
- s->version = 0;
-
- if (s->version == 2) {
- int method, interlace;
-
- if (avctx->extradata_size < 4)
- return -1;
-
- method = ((uint8_t*)avctx->extradata)[0];
- s->decorrelate = method & 64 ? 1 : 0;
- s->predictor = method & 63;
- s->bitstream_bpp = ((uint8_t*)avctx->extradata)[1];
- if (s->bitstream_bpp == 0)
- s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
- interlace = (((uint8_t*)avctx->extradata)[2] & 0x30) >> 4;
- s->interlaced = (interlace == 1) ? 1 : (interlace == 2) ? 0 : s->interlaced;
- s->context = ((uint8_t*)avctx->extradata)[2] & 0x40 ? 1 : 0;
-
- if ( read_huffman_tables(s, ((uint8_t*)avctx->extradata) + 4,
- avctx->extradata_size - 4) < 0)
- return -1;
- }else{
- switch (avctx->bits_per_coded_sample & 7) {
- case 1:
- s->predictor = LEFT;
- s->decorrelate = 0;
- break;
- case 2:
- s->predictor = LEFT;
- s->decorrelate = 1;
- break;
- case 3:
- s->predictor = PLANE;
- s->decorrelate = avctx->bits_per_coded_sample >= 24;
- break;
- case 4:
- s->predictor = MEDIAN;
- s->decorrelate = 0;
- break;
- default:
- s->predictor = LEFT; //OLD
- s->decorrelate = 0;
- break;
- }
- s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
- s->context = 0;
-
- if (read_old_huffman_tables(s) < 0)
- return -1;
- }
-
- switch (s->bitstream_bpp) {
- case 12:
- avctx->pix_fmt = AV_PIX_FMT_YUV420P;
- break;
- case 16:
- if (s->yuy2) {
- avctx->pix_fmt = AV_PIX_FMT_YUYV422;
- } else {
- avctx->pix_fmt = AV_PIX_FMT_YUV422P;
- }
- break;
- case 24:
- case 32:
- if (s->bgr32) {
- avctx->pix_fmt = AV_PIX_FMT_RGB32;
- } else {
- avctx->pix_fmt = AV_PIX_FMT_BGR24;
- }
- break;
- default:
- return AVERROR_INVALIDDATA;
- }
-
- alloc_temp(s);
-
- return 0;
-}
-
-static av_cold int decode_init_thread_copy(AVCodecContext *avctx)
-{
- HYuvContext *s = avctx->priv_data;
- int i;
-
- avctx->coded_frame= &s->picture;
- alloc_temp(s);
-
- for (i = 0; i < 6; i++)
- s->vlc[i].table = NULL;
-
- if (s->version == 2) {
- if (read_huffman_tables(s, ((uint8_t*)avctx->extradata) + 4,
- avctx->extradata_size) < 0)
- return -1;
- } else {
- if (read_old_huffman_tables(s) < 0)
- return -1;
- }
-
- return 0;
-}
-#endif /* CONFIG_HUFFYUV_DECODER || CONFIG_FFVHUFF_DECODER */
-
-#if CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER
-static int store_table(HYuvContext *s, const uint8_t *len, uint8_t *buf)
-{
- int i;
- int index = 0;
-
- for (i = 0; i < 256;) {
- int val = len[i];
- int repeat = 0;
-
- for (; i < 256 && len[i] == val && repeat < 255; i++)
- repeat++;
-
- assert(val < 32 && val >0 && repeat<256 && repeat>0);
- if ( repeat > 7) {
- buf[index++] = val;
- buf[index++] = repeat;
- } else {
- buf[index++] = val | (repeat << 5);
- }
- }
-
- return index;
-}
-
-static av_cold int encode_init(AVCodecContext *avctx)
-{
- HYuvContext *s = avctx->priv_data;
- int i, j;
-
- common_init(avctx);
-
- avctx->extradata = av_mallocz(1024*30); // 256*3+4 == 772
- avctx->stats_out = av_mallocz(1024*30); // 21*256*3(%llu ) + 3(\n) + 1(0) = 16132
- s->version = 2;
-
- avctx->coded_frame = &s->picture;
-
- switch (avctx->pix_fmt) {
- case AV_PIX_FMT_YUV420P:
- s->bitstream_bpp = 12;
- break;
- case AV_PIX_FMT_YUV422P:
- s->bitstream_bpp = 16;
- break;
- case AV_PIX_FMT_RGB32:
- s->bitstream_bpp = 24;
- break;
- default:
- av_log(avctx, AV_LOG_ERROR, "format not supported\n");
- return -1;
- }
- avctx->bits_per_coded_sample = s->bitstream_bpp;
- s->decorrelate = s->bitstream_bpp >= 24;
- s->predictor = avctx->prediction_method;
- s->interlaced = avctx->flags&CODEC_FLAG_INTERLACED_ME ? 1 : 0;
- if (avctx->context_model == 1) {
- s->context = avctx->context_model;
- if (s->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)) {
- av_log(avctx, AV_LOG_ERROR,
- "context=1 is not compatible with "
- "2 pass huffyuv encoding\n");
- return -1;
- }
- }else s->context= 0;
-
- if (avctx->codec->id == AV_CODEC_ID_HUFFYUV) {
- if (avctx->pix_fmt == AV_PIX_FMT_YUV420P) {
- av_log(avctx, AV_LOG_ERROR,
- "Error: YV12 is not supported by huffyuv; use "
- "vcodec=ffvhuff or format=422p\n");
- return -1;
- }
- if (avctx->context_model) {
- av_log(avctx, AV_LOG_ERROR,
- "Error: per-frame huffman tables are not supported "
- "by huffyuv; use vcodec=ffvhuff\n");
- return -1;
- }
- if (s->interlaced != ( s->height > 288 ))
- av_log(avctx, AV_LOG_INFO,
- "using huffyuv 2.2.0 or newer interlacing flag\n");
- }
-
- if (s->bitstream_bpp >= 24 && s->predictor == MEDIAN) {
- av_log(avctx, AV_LOG_ERROR,
- "Error: RGB is incompatible with median predictor\n");
- return -1;
- }
-
- ((uint8_t*)avctx->extradata)[0] = s->predictor | (s->decorrelate << 6);
- ((uint8_t*)avctx->extradata)[1] = s->bitstream_bpp;
- ((uint8_t*)avctx->extradata)[2] = s->interlaced ? 0x10 : 0x20;
- if (s->context)
- ((uint8_t*)avctx->extradata)[2] |= 0x40;
- ((uint8_t*)avctx->extradata)[3] = 0;
- s->avctx->extradata_size = 4;
-
- if (avctx->stats_in) {
- char *p = avctx->stats_in;
-
- for (i = 0; i < 3; i++)
- for (j = 0; j < 256; j++)
- s->stats[i][j] = 1;
-
- for (;;) {
- for (i = 0; i < 3; i++) {
- char *next;
-
- for (j = 0; j < 256; j++) {
- s->stats[i][j] += strtol(p, &next, 0);
- if (next == p) return -1;
- p = next;
- }
- }
- if (p[0] == 0 || p[1] == 0 || p[2] == 0) break;
- }
- } else {
- for (i = 0; i < 3; i++)
- for (j = 0; j < 256; j++) {
- int d = FFMIN(j, 256 - j);
-
- s->stats[i][j] = 100000000 / (d + 1);
- }
- }
-
- for (i = 0; i < 3; i++) {
- ff_huff_gen_len_table(s->len[i], s->stats[i]);
-
- if (generate_bits_table(s->bits[i], s->len[i]) < 0) {
- return -1;
- }
-
- s->avctx->extradata_size +=
- store_table(s, s->len[i], &((uint8_t*)s->avctx->extradata)[s->avctx->extradata_size]);
- }
-
- if (s->context) {
- for (i = 0; i < 3; i++) {
- int pels = s->width * s->height / (i ? 40 : 10);
- for (j = 0; j < 256; j++) {
- int d = FFMIN(j, 256 - j);
- s->stats[i][j] = pels/(d + 1);
- }
- }
- } else {
- for (i = 0; i < 3; i++)
- for (j = 0; j < 256; j++)
- s->stats[i][j]= 0;
- }
-
- alloc_temp(s);
-
- s->picture_number=0;
-
- return 0;
-}
-#endif /* CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER */
-
-/* TODO instead of restarting the read when the code isn't in the first level
- * of the joint table, jump into the 2nd level of the individual table. */
-#define READ_2PIX(dst0, dst1, plane1){\
- uint16_t code = get_vlc2(&s->gb, s->vlc[3+plane1].table, VLC_BITS, 1);\
- if(code != 0xffff){\
- dst0 = code>>8;\
- dst1 = code;\
- }else{\
- dst0 = get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);\
- dst1 = get_vlc2(&s->gb, s->vlc[plane1].table, VLC_BITS, 3);\
- }\
-}
-
-static void decode_422_bitstream(HYuvContext *s, int count)
-{
- int i;
-
- count /= 2;
-
- if (count >= (get_bits_left(&s->gb)) / (31 * 4)) {
- for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
- READ_2PIX(s->temp[0][2 * i ], s->temp[1][i], 1);
- READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
- }
- } else {
- for (i = 0; i < count; i++) {
- READ_2PIX(s->temp[0][2 * i ], s->temp[1][i], 1);
- READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
- }
- }
-}
-
-static void decode_gray_bitstream(HYuvContext *s, int count)
-{
- int i;
-
- count/=2;
-
- if (count >= (get_bits_left(&s->gb)) / (31 * 2)) {
- for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
- READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
- }
- } else {
- for(i=0; i<count; i++){
- READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
- }
- }
-}
-
-#if CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER
-static int encode_422_bitstream(HYuvContext *s, int offset, int count)
-{
- int i;
- const uint8_t *y = s->temp[0] + offset;
- const uint8_t *u = s->temp[1] + offset / 2;
- const uint8_t *v = s->temp[2] + offset / 2;
-
- if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < 2 * 4 * count) {
- av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
- return -1;
- }
-
-#define LOAD4\
- int y0 = y[2 * i];\
- int y1 = y[2 * i + 1];\
- int u0 = u[i];\
- int v0 = v[i];
-
- count /= 2;
-
- if (s->flags & CODEC_FLAG_PASS1) {
- for(i = 0; i < count; i++) {
- LOAD4;
- s->stats[0][y0]++;
- s->stats[1][u0]++;
- s->stats[0][y1]++;
- s->stats[2][v0]++;
- }
- }
- if (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)
- return 0;
- if (s->context) {
- for (i = 0; i < count; i++) {
- LOAD4;
- s->stats[0][y0]++;
- put_bits(&s->pb, s->len[0][y0], s->bits[0][y0]);
- s->stats[1][u0]++;
- put_bits(&s->pb, s->len[1][u0], s->bits[1][u0]);
- s->stats[0][y1]++;
- put_bits(&s->pb, s->len[0][y1], s->bits[0][y1]);
- s->stats[2][v0]++;
- put_bits(&s->pb, s->len[2][v0], s->bits[2][v0]);
- }
- } else {
- for(i = 0; i < count; i++) {
- LOAD4;
- put_bits(&s->pb, s->len[0][y0], s->bits[0][y0]);
- put_bits(&s->pb, s->len[1][u0], s->bits[1][u0]);
- put_bits(&s->pb, s->len[0][y1], s->bits[0][y1]);
- put_bits(&s->pb, s->len[2][v0], s->bits[2][v0]);
- }
- }
- return 0;
-}
-
-static int encode_gray_bitstream(HYuvContext *s, int count)
-{
- int i;
-
- if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < 4 * count) {
- av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
- return -1;
- }
-
-#define LOAD2\
- int y0 = s->temp[0][2 * i];\
- int y1 = s->temp[0][2 * i + 1];
-#define STAT2\
- s->stats[0][y0]++;\
- s->stats[0][y1]++;
-#define WRITE2\
- put_bits(&s->pb, s->len[0][y0], s->bits[0][y0]);\
- put_bits(&s->pb, s->len[0][y1], s->bits[0][y1]);
-
- count /= 2;
-
- if (s->flags & CODEC_FLAG_PASS1) {
- for (i = 0; i < count; i++) {
- LOAD2;
- STAT2;
- }
- }
- if (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)
- return 0;
-
- if (s->context) {
- for (i = 0; i < count; i++) {
- LOAD2;
- STAT2;
- WRITE2;
- }
- } else {
- for (i = 0; i < count; i++) {
- LOAD2;
- WRITE2;
- }
- }
- return 0;
-}
-#endif /* CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER */
-
-static av_always_inline void decode_bgr_1(HYuvContext *s, int count,
- int decorrelate, int alpha)
-{
- int i;
- for (i = 0; i < count; i++) {
- int code = get_vlc2(&s->gb, s->vlc[3].table, VLC_BITS, 1);
- if (code != -1) {
- *(uint32_t*)&s->temp[0][4 * i] = s->pix_bgr_map[code];
- } else if(decorrelate) {
- s->temp[0][4 * i + G] = get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
- s->temp[0][4 * i + B] = get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3) +
- s->temp[0][4 * i + G];
- s->temp[0][4 * i + R] = get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3) +
- s->temp[0][4 * i + G];
- } else {
- s->temp[0][4 * i + B] = get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
- s->temp[0][4 * i + G] = get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
- s->temp[0][4 * i + R] = get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3);
- }
- if (alpha)
- s->temp[0][4 * i + A] = get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3);
- }
-}
-
-static void decode_bgr_bitstream(HYuvContext *s, int count)
-{
- if (s->decorrelate) {
- if (s->bitstream_bpp==24)
- decode_bgr_1(s, count, 1, 0);
- else
- decode_bgr_1(s, count, 1, 1);
- } else {
- if (s->bitstream_bpp==24)
- decode_bgr_1(s, count, 0, 0);
- else
- decode_bgr_1(s, count, 0, 1);
- }
-}
-
-static int encode_bgr_bitstream(HYuvContext *s, int count)
-{
- int i;
-
- if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < 3 * 4 * count) {
- av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
- return -1;
- }
-
-#define LOAD3\
- int g = s->temp[0][4 * i + G];\
- int b = (s->temp[0][4 * i + B] - g) & 0xff;\
- int r = (s->temp[0][4 * i + R] - g) & 0xff;
-#define STAT3\
- s->stats[0][b]++;\
- s->stats[1][g]++;\
- s->stats[2][r]++;
-#define WRITE3\
- put_bits(&s->pb, s->len[1][g], s->bits[1][g]);\
- put_bits(&s->pb, s->len[0][b], s->bits[0][b]);\
- put_bits(&s->pb, s->len[2][r], s->bits[2][r]);
-
- if ((s->flags & CODEC_FLAG_PASS1) &&
- (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)) {
- for (i = 0; i < count; i++) {
- LOAD3;
- STAT3;
- }
- } else if (s->context || (s->flags & CODEC_FLAG_PASS1)) {
- for (i = 0; i < count; i++) {
- LOAD3;
- STAT3;
- WRITE3;
- }
- } else {
- for (i = 0; i < count; i++) {
- LOAD3;
- WRITE3;
- }
- }
- return 0;
-}
-
-#if CONFIG_HUFFYUV_DECODER || CONFIG_FFVHUFF_DECODER
-static void draw_slice(HYuvContext *s, int y)
-{
- int h, cy, i;
- int offset[AV_NUM_DATA_POINTERS];
-
- if (s->avctx->draw_horiz_band==NULL)
- return;
-
- h = y - s->last_slice_end;
- y -= h;
-
- if (s->bitstream_bpp == 12) {
- cy = y>>1;
- } else {
- cy = y;
- }
-
- offset[0] = s->picture.linesize[0]*y;
- offset[1] = s->picture.linesize[1]*cy;
- offset[2] = s->picture.linesize[2]*cy;
- for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
- offset[i] = 0;
- emms_c();
-
- s->avctx->draw_horiz_band(s->avctx, &s->picture, offset, y, 3, h);
-
- s->last_slice_end = y + h;
-}
-
-static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
- AVPacket *avpkt)
-{
- const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
- HYuvContext *s = avctx->priv_data;
- const int width = s->width;
- const int width2 = s->width>>1;
- const int height = s->height;
- int fake_ystride, fake_ustride, fake_vstride;
- AVFrame * const p = &s->picture;
- int table_size = 0;
-
- AVFrame *picture = data;
-
- av_fast_malloc(&s->bitstream_buffer,
- &s->bitstream_buffer_size,
- buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
- if (!s->bitstream_buffer)
- return AVERROR(ENOMEM);
-
- memset(s->bitstream_buffer + buf_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
- s->dsp.bswap_buf((uint32_t*)s->bitstream_buffer,
- (const uint32_t*)buf, buf_size / 4);
-
- if (p->data[0])
- ff_thread_release_buffer(avctx, p);
-
- p->reference = 0;
- if (ff_thread_get_buffer(avctx, p) < 0) {
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
- }
-
- if (s->context) {
- table_size = read_huffman_tables(s, s->bitstream_buffer, buf_size);
- if (table_size < 0)
- return -1;
- }
-
- if ((unsigned)(buf_size-table_size) >= INT_MAX / 8)
- return -1;
-
- init_get_bits(&s->gb, s->bitstream_buffer+table_size,
- (buf_size-table_size) * 8);
-
- fake_ystride = s->interlaced ? p->linesize[0] * 2 : p->linesize[0];
- fake_ustride = s->interlaced ? p->linesize[1] * 2 : p->linesize[1];
- fake_vstride = s->interlaced ? p->linesize[2] * 2 : p->linesize[2];
-
- s->last_slice_end = 0;
-
- if (s->bitstream_bpp < 24) {
- int y, cy;
- int lefty, leftu, leftv;
- int lefttopy, lefttopu, lefttopv;
-
- if (s->yuy2) {
- p->data[0][3] = get_bits(&s->gb, 8);
- p->data[0][2] = get_bits(&s->gb, 8);
- p->data[0][1] = get_bits(&s->gb, 8);
- p->data[0][0] = get_bits(&s->gb, 8);
-
- av_log(avctx, AV_LOG_ERROR,
- "YUY2 output is not implemented yet\n");
- return -1;
- } else {
-
- leftv = p->data[2][0] = get_bits(&s->gb, 8);
- lefty = p->data[0][1] = get_bits(&s->gb, 8);
- leftu = p->data[1][0] = get_bits(&s->gb, 8);
- p->data[0][0] = get_bits(&s->gb, 8);
-
- switch (s->predictor) {
- case LEFT:
- case PLANE:
- decode_422_bitstream(s, width-2);
- lefty = s->dsp.add_hfyu_left_prediction(p->data[0] + 2, s->temp[0], width-2, lefty);
- if (!(s->flags&CODEC_FLAG_GRAY)) {
- leftu = s->dsp.add_hfyu_left_prediction(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
- leftv = s->dsp.add_hfyu_left_prediction(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
- }
-
- for (cy = y = 1; y < s->height; y++, cy++) {
- uint8_t *ydst, *udst, *vdst;
-
- if (s->bitstream_bpp == 12) {
- decode_gray_bitstream(s, width);
-
- ydst = p->data[0] + p->linesize[0] * y;
-
- lefty = s->dsp.add_hfyu_left_prediction(ydst, s->temp[0], width, lefty);
- if (s->predictor == PLANE) {
- if (y > s->interlaced)
- s->dsp.add_bytes(ydst, ydst - fake_ystride, width);
- }
- y++;
- if (y >= s->height) break;
- }
-
- draw_slice(s, y);
-
- ydst = p->data[0] + p->linesize[0]*y;
- udst = p->data[1] + p->linesize[1]*cy;
- vdst = p->data[2] + p->linesize[2]*cy;
-
- decode_422_bitstream(s, width);
- lefty = s->dsp.add_hfyu_left_prediction(ydst, s->temp[0], width, lefty);
- if (!(s->flags & CODEC_FLAG_GRAY)) {
- leftu= s->dsp.add_hfyu_left_prediction(udst, s->temp[1], width2, leftu);
- leftv= s->dsp.add_hfyu_left_prediction(vdst, s->temp[2], width2, leftv);
- }
- if (s->predictor == PLANE) {
- if (cy > s->interlaced) {
- s->dsp.add_bytes(ydst, ydst - fake_ystride, width);
- if (!(s->flags & CODEC_FLAG_GRAY)) {
- s->dsp.add_bytes(udst, udst - fake_ustride, width2);
- s->dsp.add_bytes(vdst, vdst - fake_vstride, width2);
- }
- }
- }
- }
- draw_slice(s, height);
-
- break;
- case MEDIAN:
- /* first line except first 2 pixels is left predicted */
- decode_422_bitstream(s, width - 2);
- lefty= s->dsp.add_hfyu_left_prediction(p->data[0] + 2, s->temp[0], width - 2, lefty);
- if (!(s->flags & CODEC_FLAG_GRAY)) {
- leftu = s->dsp.add_hfyu_left_prediction(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
- leftv = s->dsp.add_hfyu_left_prediction(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
- }
-
- cy = y = 1;
-
- /* second line is left predicted for interlaced case */
- if (s->interlaced) {
- decode_422_bitstream(s, width);
- lefty = s->dsp.add_hfyu_left_prediction(p->data[0] + p->linesize[0], s->temp[0], width, lefty);
- if (!(s->flags & CODEC_FLAG_GRAY)) {
- leftu = s->dsp.add_hfyu_left_prediction(p->data[1] + p->linesize[2], s->temp[1], width2, leftu);
- leftv = s->dsp.add_hfyu_left_prediction(p->data[2] + p->linesize[1], s->temp[2], width2, leftv);
- }
- y++; cy++;
- }
-
- /* next 4 pixels are left predicted too */
- decode_422_bitstream(s, 4);
- lefty = s->dsp.add_hfyu_left_prediction(p->data[0] + fake_ystride, s->temp[0], 4, lefty);
- if (!(s->flags&CODEC_FLAG_GRAY)) {
- leftu = s->dsp.add_hfyu_left_prediction(p->data[1] + fake_ustride, s->temp[1], 2, leftu);
- leftv = s->dsp.add_hfyu_left_prediction(p->data[2] + fake_vstride, s->temp[2], 2, leftv);
- }
-
- /* next line except the first 4 pixels is median predicted */
- lefttopy = p->data[0][3];
- decode_422_bitstream(s, width - 4);
- s->dsp.add_hfyu_median_prediction(p->data[0] + fake_ystride+4, p->data[0]+4, s->temp[0], width-4, &lefty, &lefttopy);
- if (!(s->flags&CODEC_FLAG_GRAY)) {
- lefttopu = p->data[1][1];
- lefttopv = p->data[2][1];
- s->dsp.add_hfyu_median_prediction(p->data[1] + fake_ustride+2, p->data[1] + 2, s->temp[1], width2 - 2, &leftu, &lefttopu);
- s->dsp.add_hfyu_median_prediction(p->data[2] + fake_vstride+2, p->data[2] + 2, s->temp[2], width2 - 2, &leftv, &lefttopv);
- }
- y++; cy++;
-
- for (; y<height; y++, cy++) {
- uint8_t *ydst, *udst, *vdst;
-
- if (s->bitstream_bpp == 12) {
- while (2 * cy > y) {
- decode_gray_bitstream(s, width);
- ydst = p->data[0] + p->linesize[0] * y;
- s->dsp.add_hfyu_median_prediction(ydst, ydst - fake_ystride, s->temp[0], width, &lefty, &lefttopy);
- y++;
- }
- if (y >= height) break;
- }
- draw_slice(s, y);
-
- decode_422_bitstream(s, width);
-
- ydst = p->data[0] + p->linesize[0] * y;
- udst = p->data[1] + p->linesize[1] * cy;
- vdst = p->data[2] + p->linesize[2] * cy;
-
- s->dsp.add_hfyu_median_prediction(ydst, ydst - fake_ystride, s->temp[0], width, &lefty, &lefttopy);
- if (!(s->flags & CODEC_FLAG_GRAY)) {
- s->dsp.add_hfyu_median_prediction(udst, udst - fake_ustride, s->temp[1], width2, &leftu, &lefttopu);
- s->dsp.add_hfyu_median_prediction(vdst, vdst - fake_vstride, s->temp[2], width2, &leftv, &lefttopv);
- }
- }
-
- draw_slice(s, height);
- break;
- }
- }
- } else {
- int y;
- int leftr, leftg, leftb, lefta;
- const int last_line = (height - 1) * p->linesize[0];
-
- if (s->bitstream_bpp == 32) {
- lefta = p->data[0][last_line+A] = get_bits(&s->gb, 8);
- leftr = p->data[0][last_line+R] = get_bits(&s->gb, 8);
- leftg = p->data[0][last_line+G] = get_bits(&s->gb, 8);
- leftb = p->data[0][last_line+B] = get_bits(&s->gb, 8);
- } else {
- leftr = p->data[0][last_line+R] = get_bits(&s->gb, 8);
- leftg = p->data[0][last_line+G] = get_bits(&s->gb, 8);
- leftb = p->data[0][last_line+B] = get_bits(&s->gb, 8);
- lefta = p->data[0][last_line+A] = 255;
- skip_bits(&s->gb, 8);
- }
-
- if (s->bgr32) {
- switch (s->predictor) {
- case LEFT:
- case PLANE:
- decode_bgr_bitstream(s, width - 1);
- s->dsp.add_hfyu_left_prediction_bgr32(p->data[0] + last_line+4, s->temp[0], width - 1, &leftr, &leftg, &leftb, &lefta);
-
- for (y = s->height - 2; y >= 0; y--) { //Yes it is stored upside down.
- decode_bgr_bitstream(s, width);
-
- s->dsp.add_hfyu_left_prediction_bgr32(p->data[0] + p->linesize[0]*y, s->temp[0], width, &leftr, &leftg, &leftb, &lefta);
- if (s->predictor == PLANE) {
- if (s->bitstream_bpp != 32) lefta = 0;
- if ((y & s->interlaced) == 0 &&
- y < s->height - 1 - s->interlaced) {
- s->dsp.add_bytes(p->data[0] + p->linesize[0] * y,
- p->data[0] + p->linesize[0] * y +
- fake_ystride, fake_ystride);
- }
- }
- }
- // just 1 large slice as this is not possible in reverse order
- draw_slice(s, height);
- break;
- default:
- av_log(avctx, AV_LOG_ERROR,
- "prediction type not supported!\n");
- }
- }else{
- av_log(avctx, AV_LOG_ERROR,
- "BGR24 output is not implemented yet\n");
- return -1;
- }
- }
- emms_c();
-
- *picture = *p;
- *got_frame = 1;
-
- return (get_bits_count(&s->gb) + 31) / 32 * 4 + table_size;
}
-#endif /* CONFIG_HUFFYUV_DECODER || CONFIG_FFVHUFF_DECODER */
-static int common_end(HYuvContext *s)
+void ff_huffyuv_common_end(HYuvContext *s)
{
int i;
for(i = 0; i < 3; i++) {
av_freep(&s->temp[i]);
}
- return 0;
-}
-
-#if CONFIG_HUFFYUV_DECODER || CONFIG_FFVHUFF_DECODER
-static av_cold int decode_end(AVCodecContext *avctx)
-{
- HYuvContext *s = avctx->priv_data;
- int i;
-
- if (s->picture.data[0])
- avctx->release_buffer(avctx, &s->picture);
-
- common_end(s);
- av_freep(&s->bitstream_buffer);
-
- for (i = 0; i < 6; i++) {
- ff_free_vlc(&s->vlc[i]);
- }
-
- return 0;
-}
-#endif /* CONFIG_HUFFYUV_DECODER || CONFIG_FFVHUFF_DECODER */
-
-#if CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER
-static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
- const AVFrame *pict, int *got_packet)
-{
- HYuvContext *s = avctx->priv_data;
- const int width = s->width;
- const int width2 = s->width>>1;
- const int height = s->height;
- const int fake_ystride = s->interlaced ? pict->linesize[0]*2 : pict->linesize[0];
- const int fake_ustride = s->interlaced ? pict->linesize[1]*2 : pict->linesize[1];
- const int fake_vstride = s->interlaced ? pict->linesize[2]*2 : pict->linesize[2];
- AVFrame * const p = &s->picture;
- int i, j, size = 0, ret;
-
- if (!pkt->data &&
- (ret = av_new_packet(pkt, width * height * 3 * 4 + FF_MIN_BUFFER_SIZE)) < 0) {
- av_log(avctx, AV_LOG_ERROR, "Error allocating output packet.\n");
- return ret;
- }
-
- *p = *pict;
- p->pict_type = AV_PICTURE_TYPE_I;
- p->key_frame = 1;
-
- if (s->context) {
- for (i = 0; i < 3; i++) {
- ff_huff_gen_len_table(s->len[i], s->stats[i]);
- if (generate_bits_table(s->bits[i], s->len[i]) < 0)
- return -1;
- size += store_table(s, s->len[i], &pkt->data[size]);
- }
-
- for (i = 0; i < 3; i++)
- for (j = 0; j < 256; j++)
- s->stats[i][j] >>= 1;
- }
-
- init_put_bits(&s->pb, pkt->data + size, pkt->size - size);
-
- if (avctx->pix_fmt == AV_PIX_FMT_YUV422P ||
- avctx->pix_fmt == AV_PIX_FMT_YUV420P) {
- int lefty, leftu, leftv, y, cy;
-
- put_bits(&s->pb, 8, leftv = p->data[2][0]);
- put_bits(&s->pb, 8, lefty = p->data[0][1]);
- put_bits(&s->pb, 8, leftu = p->data[1][0]);
- put_bits(&s->pb, 8, p->data[0][0]);
-
- lefty = sub_left_prediction(s, s->temp[0], p->data[0], width , 0);
- leftu = sub_left_prediction(s, s->temp[1], p->data[1], width2, 0);
- leftv = sub_left_prediction(s, s->temp[2], p->data[2], width2, 0);
-
- encode_422_bitstream(s, 2, width-2);
-
- if (s->predictor==MEDIAN) {
- int lefttopy, lefttopu, lefttopv;
- cy = y = 1;
- if (s->interlaced) {
- lefty = sub_left_prediction(s, s->temp[0], p->data[0] + p->linesize[0], width , lefty);
- leftu = sub_left_prediction(s, s->temp[1], p->data[1] + p->linesize[1], width2, leftu);
- leftv = sub_left_prediction(s, s->temp[2], p->data[2] + p->linesize[2], width2, leftv);
-
- encode_422_bitstream(s, 0, width);
- y++; cy++;
- }
-
- lefty = sub_left_prediction(s, s->temp[0], p->data[0] + fake_ystride, 4, lefty);
- leftu = sub_left_prediction(s, s->temp[1], p->data[1] + fake_ustride, 2, leftu);
- leftv = sub_left_prediction(s, s->temp[2], p->data[2] + fake_vstride, 2, leftv);
-
- encode_422_bitstream(s, 0, 4);
-
- lefttopy = p->data[0][3];
- lefttopu = p->data[1][1];
- lefttopv = p->data[2][1];
- s->dsp.sub_hfyu_median_prediction(s->temp[0], p->data[0]+4, p->data[0] + fake_ystride + 4, width - 4 , &lefty, &lefttopy);
- s->dsp.sub_hfyu_median_prediction(s->temp[1], p->data[1]+2, p->data[1] + fake_ustride + 2, width2 - 2, &leftu, &lefttopu);
- s->dsp.sub_hfyu_median_prediction(s->temp[2], p->data[2]+2, p->data[2] + fake_vstride + 2, width2 - 2, &leftv, &lefttopv);
- encode_422_bitstream(s, 0, width - 4);
- y++; cy++;
-
- for (; y < height; y++,cy++) {
- uint8_t *ydst, *udst, *vdst;
-
- if (s->bitstream_bpp == 12) {
- while (2 * cy > y) {
- ydst = p->data[0] + p->linesize[0] * y;
- s->dsp.sub_hfyu_median_prediction(s->temp[0], ydst - fake_ystride, ydst, width , &lefty, &lefttopy);
- encode_gray_bitstream(s, width);
- y++;
- }
- if (y >= height) break;
- }
- ydst = p->data[0] + p->linesize[0] * y;
- udst = p->data[1] + p->linesize[1] * cy;
- vdst = p->data[2] + p->linesize[2] * cy;
-
- s->dsp.sub_hfyu_median_prediction(s->temp[0], ydst - fake_ystride, ydst, width , &lefty, &lefttopy);
- s->dsp.sub_hfyu_median_prediction(s->temp[1], udst - fake_ustride, udst, width2, &leftu, &lefttopu);
- s->dsp.sub_hfyu_median_prediction(s->temp[2], vdst - fake_vstride, vdst, width2, &leftv, &lefttopv);
-
- encode_422_bitstream(s, 0, width);
- }
- } else {
- for (cy = y = 1; y < height; y++, cy++) {
- uint8_t *ydst, *udst, *vdst;
-
- /* encode a luma only line & y++ */
- if (s->bitstream_bpp == 12) {
- ydst = p->data[0] + p->linesize[0] * y;
-
- if (s->predictor == PLANE && s->interlaced < y) {
- s->dsp.diff_bytes(s->temp[1], ydst, ydst - fake_ystride, width);
-
- lefty = sub_left_prediction(s, s->temp[0], s->temp[1], width , lefty);
- } else {
- lefty = sub_left_prediction(s, s->temp[0], ydst, width , lefty);
- }
- encode_gray_bitstream(s, width);
- y++;
- if (y >= height) break;
- }
-
- ydst = p->data[0] + p->linesize[0] * y;
- udst = p->data[1] + p->linesize[1] * cy;
- vdst = p->data[2] + p->linesize[2] * cy;
-
- if (s->predictor == PLANE && s->interlaced < cy) {
- s->dsp.diff_bytes(s->temp[1], ydst, ydst - fake_ystride, width);
- s->dsp.diff_bytes(s->temp[2], udst, udst - fake_ustride, width2);
- s->dsp.diff_bytes(s->temp[2] + width2, vdst, vdst - fake_vstride, width2);
-
- lefty = sub_left_prediction(s, s->temp[0], s->temp[1], width , lefty);
- leftu = sub_left_prediction(s, s->temp[1], s->temp[2], width2, leftu);
- leftv = sub_left_prediction(s, s->temp[2], s->temp[2] + width2, width2, leftv);
- } else {
- lefty = sub_left_prediction(s, s->temp[0], ydst, width , lefty);
- leftu = sub_left_prediction(s, s->temp[1], udst, width2, leftu);
- leftv = sub_left_prediction(s, s->temp[2], vdst, width2, leftv);
- }
-
- encode_422_bitstream(s, 0, width);
- }
- }
- } else if(avctx->pix_fmt == AV_PIX_FMT_RGB32) {
- uint8_t *data = p->data[0] + (height - 1) * p->linesize[0];
- const int stride = -p->linesize[0];
- const int fake_stride = -fake_ystride;
- int y;
- int leftr, leftg, leftb;
-
- put_bits(&s->pb, 8, leftr = data[R]);
- put_bits(&s->pb, 8, leftg = data[G]);
- put_bits(&s->pb, 8, leftb = data[B]);
- put_bits(&s->pb, 8, 0);
-
- sub_left_prediction_bgr32(s, s->temp[0], data + 4, width - 1, &leftr, &leftg, &leftb);
- encode_bgr_bitstream(s, width - 1);
-
- for (y = 1; y < s->height; y++) {
- uint8_t *dst = data + y*stride;
- if (s->predictor == PLANE && s->interlaced < y) {
- s->dsp.diff_bytes(s->temp[1], dst, dst - fake_stride, width * 4);
- sub_left_prediction_bgr32(s, s->temp[0], s->temp[1], width, &leftr, &leftg, &leftb);
- } else {
- sub_left_prediction_bgr32(s, s->temp[0], dst, width, &leftr, &leftg, &leftb);
- }
- encode_bgr_bitstream(s, width);
- }
- } else {
- av_log(avctx, AV_LOG_ERROR, "Format not supported!\n");
- }
- emms_c();
-
- size += (put_bits_count(&s->pb) + 31) / 8;
- put_bits(&s->pb, 16, 0);
- put_bits(&s->pb, 15, 0);
- size /= 4;
-
- if ((s->flags&CODEC_FLAG_PASS1) && (s->picture_number & 31) == 0) {
- int j;
- char *p = avctx->stats_out;
- char *end = p + 1024*30;
- for (i = 0; i < 3; i++) {
- for (j = 0; j < 256; j++) {
- snprintf(p, end-p, "%"PRIu64" ", s->stats[i][j]);
- p += strlen(p);
- s->stats[i][j]= 0;
- }
- snprintf(p, end-p, "\n");
- p++;
- }
- } else
- avctx->stats_out[0] = '\0';
- if (!(s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)) {
- flush_put_bits(&s->pb);
- s->dsp.bswap_buf((uint32_t*)pkt->data, (uint32_t*)pkt->data, size);
- }
-
- s->picture_number++;
-
- pkt->size = size * 4;
- pkt->flags |= AV_PKT_FLAG_KEY;
- *got_packet = 1;
-
- return 0;
}
-
-static av_cold int encode_end(AVCodecContext *avctx)
-{
- HYuvContext *s = avctx->priv_data;
-
- common_end(s);
-
- av_freep(&avctx->extradata);
- av_freep(&avctx->stats_out);
-
- return 0;
-}
-#endif /* CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER */
-
-#if CONFIG_HUFFYUV_DECODER
-AVCodec ff_huffyuv_decoder = {
- .name = "huffyuv",
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_HUFFYUV,
- .priv_data_size = sizeof(HYuvContext),
- .init = decode_init,
- .close = decode_end,
- .decode = decode_frame,
- .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
- CODEC_CAP_FRAME_THREADS,
- .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
- .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
-};
-#endif
-
-#if CONFIG_FFVHUFF_DECODER
-AVCodec ff_ffvhuff_decoder = {
- .name = "ffvhuff",
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_FFVHUFF,
- .priv_data_size = sizeof(HYuvContext),
- .init = decode_init,
- .close = decode_end,
- .decode = decode_frame,
- .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
- CODEC_CAP_FRAME_THREADS,
- .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
- .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
-};
-#endif
-
-#if CONFIG_HUFFYUV_ENCODER
-AVCodec ff_huffyuv_encoder = {
- .name = "huffyuv",
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_HUFFYUV,
- .priv_data_size = sizeof(HYuvContext),
- .init = encode_init,
- .encode2 = encode_frame,
- .close = encode_end,
- .pix_fmts = (const enum AVPixelFormat[]){
- AV_PIX_FMT_YUV422P, AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE
- },
- .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
-};
-#endif
-
-#if CONFIG_FFVHUFF_ENCODER
-AVCodec ff_ffvhuff_encoder = {
- .name = "ffvhuff",
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_FFVHUFF,
- .priv_data_size = sizeof(HYuvContext),
- .init = encode_init,
- .encode2 = encode_frame,
- .close = encode_end,
- .pix_fmts = (const enum AVPixelFormat[]){
- AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE
- },
- .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
-};
-#endif
diff --git a/libavcodec/huffyuv.h b/libavcodec/huffyuv.h
new file mode 100644
index 0000000..c464d83
--- /dev/null
+++ b/libavcodec/huffyuv.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2002-2003 Michael Niedermayer <michaelni at gmx.at>
+ *
+ * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
+ * the algorithm used
+ *
+ * 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
+ * huffyuv codec for libavcodec.
+ */
+
+#ifndef AVCODEC_HUFFYUV_H
+#define AVCODEC_HUFFYUV_H
+
+#include <stdint.h>
+
+#include "avcodec.h"
+#include "dsputil.h"
+#include "get_bits.h"
+#include "put_bits.h"
+
+#define VLC_BITS 11
+
+#if HAVE_BIGENDIAN
+#define B 3
+#define G 2
+#define R 1
+#define A 0
+#else
+#define B 0
+#define G 1
+#define R 2
+#define A 3
+#endif
+
+typedef enum Predictor {
+ LEFT = 0,
+ PLANE,
+ MEDIAN,
+} Predictor;
+
+typedef struct HYuvContext {
+ AVCodecContext *avctx;
+ Predictor predictor;
+ GetBitContext gb;
+ PutBitContext pb;
+ int interlaced;
+ int decorrelate;
+ int bitstream_bpp;
+ int version;
+ int yuy2; //use yuy2 instead of 422P
+ int bgr32; //use bgr32 instead of bgr24
+ int width, height;
+ int flags;
+ int context;
+ int picture_number;
+ int last_slice_end;
+ uint8_t *temp[3];
+ uint64_t stats[3][256];
+ uint8_t len[3][256];
+ uint32_t bits[3][256];
+ uint32_t pix_bgr_map[1<<VLC_BITS];
+ VLC vlc[6]; //Y,U,V,YY,YU,YV
+ AVFrame picture;
+ uint8_t *bitstream_buffer;
+ unsigned int bitstream_buffer_size;
+ DSPContext dsp;
+} HYuvContext;
+
+void ff_huffyuv_common_init(AVCodecContext *s);
+void ff_huffyuv_common_end(HYuvContext *s);
+int ff_huffyuv_alloc_temp(HYuvContext *s);
+int ff_huffyuv_generate_bits_table(uint32_t *dst, const uint8_t *len_table);
+
+#endif /* AVCODEC_HUFFYUV_H */
diff --git a/libavcodec/huffyuvdec.c b/libavcodec/huffyuvdec.c
new file mode 100644
index 0000000..0946d3d
--- /dev/null
+++ b/libavcodec/huffyuvdec.c
@@ -0,0 +1,782 @@
+/*
+ * huffyuv decoder
+ *
+ * Copyright (c) 2002-2003 Michael Niedermayer <michaelni at gmx.at>
+ *
+ * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
+ * the algorithm used
+ *
+ * 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
+ * huffyuv decoder
+ */
+
+#include "avcodec.h"
+#include "dsputil.h"
+#include "get_bits.h"
+#include "huffyuv.h"
+#include "thread.h"
+
+#define classic_shift_luma_table_size 42
+static const unsigned char classic_shift_luma[classic_shift_luma_table_size + FF_INPUT_BUFFER_PADDING_SIZE] = {
+ 34,36,35,69,135,232,9,16,10,24,11,23,12,16,13,10,14,8,15,8,
+ 16,8,17,20,16,10,207,206,205,236,11,8,10,21,9,23,8,8,199,70,
+ 69,68, 0
+};
+
+#define classic_shift_chroma_table_size 59
+static const unsigned char classic_shift_chroma[classic_shift_chroma_table_size + FF_INPUT_BUFFER_PADDING_SIZE] = {
+ 66,36,37,38,39,40,41,75,76,77,110,239,144,81,82,83,84,85,118,183,
+ 56,57,88,89,56,89,154,57,58,57,26,141,57,56,58,57,58,57,184,119,
+ 214,245,116,83,82,49,80,79,78,77,44,75,41,40,39,38,37,36,34, 0
+};
+
+static const unsigned char classic_add_luma[256] = {
+ 3, 9, 5, 12, 10, 35, 32, 29, 27, 50, 48, 45, 44, 41, 39, 37,
+ 73, 70, 68, 65, 64, 61, 58, 56, 53, 50, 49, 46, 44, 41, 38, 36,
+ 68, 65, 63, 61, 58, 55, 53, 51, 48, 46, 45, 43, 41, 39, 38, 36,
+ 35, 33, 32, 30, 29, 27, 26, 25, 48, 47, 46, 44, 43, 41, 40, 39,
+ 37, 36, 35, 34, 32, 31, 30, 28, 27, 26, 24, 23, 22, 20, 19, 37,
+ 35, 34, 33, 31, 30, 29, 27, 26, 24, 23, 21, 20, 18, 17, 15, 29,
+ 27, 26, 24, 22, 21, 19, 17, 16, 14, 26, 25, 23, 21, 19, 18, 16,
+ 15, 27, 25, 23, 21, 19, 17, 16, 14, 26, 25, 23, 21, 18, 17, 14,
+ 12, 17, 19, 13, 4, 9, 2, 11, 1, 7, 8, 0, 16, 3, 14, 6,
+ 12, 10, 5, 15, 18, 11, 10, 13, 15, 16, 19, 20, 22, 24, 27, 15,
+ 18, 20, 22, 24, 26, 14, 17, 20, 22, 24, 27, 15, 18, 20, 23, 25,
+ 28, 16, 19, 22, 25, 28, 32, 36, 21, 25, 29, 33, 38, 42, 45, 49,
+ 28, 31, 34, 37, 40, 42, 44, 47, 49, 50, 52, 54, 56, 57, 59, 60,
+ 62, 64, 66, 67, 69, 35, 37, 39, 40, 42, 43, 45, 47, 48, 51, 52,
+ 54, 55, 57, 59, 60, 62, 63, 66, 67, 69, 71, 72, 38, 40, 42, 43,
+ 46, 47, 49, 51, 26, 28, 30, 31, 33, 34, 18, 19, 11, 13, 7, 8,
+};
+
+static const unsigned char classic_add_chroma[256] = {
+ 3, 1, 2, 2, 2, 2, 3, 3, 7, 5, 7, 5, 8, 6, 11, 9,
+ 7, 13, 11, 10, 9, 8, 7, 5, 9, 7, 6, 4, 7, 5, 8, 7,
+ 11, 8, 13, 11, 19, 15, 22, 23, 20, 33, 32, 28, 27, 29, 51, 77,
+ 43, 45, 76, 81, 46, 82, 75, 55, 56,144, 58, 80, 60, 74,147, 63,
+ 143, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
+ 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 27, 30, 21, 22,
+ 17, 14, 5, 6,100, 54, 47, 50, 51, 53,106,107,108,109,110,111,
+ 112,113,114,115, 4,117,118, 92, 94,121,122, 3,124,103, 2, 1,
+ 0,129,130,131,120,119,126,125,136,137,138,139,140,141,142,134,
+ 135,132,133,104, 64,101, 62, 57,102, 95, 93, 59, 61, 28, 97, 96,
+ 52, 49, 48, 29, 32, 25, 24, 46, 23, 98, 45, 44, 43, 20, 42, 41,
+ 19, 18, 99, 40, 15, 39, 38, 16, 13, 12, 11, 37, 10, 9, 8, 36,
+ 7,128,127,105,123,116, 35, 34, 33,145, 31, 79, 42,146, 78, 26,
+ 83, 48, 49, 50, 44, 47, 26, 31, 30, 18, 17, 19, 21, 24, 25, 13,
+ 14, 16, 17, 18, 20, 21, 12, 14, 15, 9, 10, 6, 9, 6, 5, 8,
+ 6, 12, 8, 10, 7, 9, 6, 4, 6, 2, 2, 3, 3, 3, 3, 2,
+};
+
+static int read_len_table(uint8_t *dst, GetBitContext *gb)
+{
+ int i, val, repeat;
+
+ for (i = 0; i < 256;) {
+ repeat = get_bits(gb, 3);
+ val = get_bits(gb, 5);
+ if (repeat == 0)
+ repeat = get_bits(gb, 8);
+ if (i + repeat > 256 || get_bits_left(gb) < 0) {
+ av_log(NULL, AV_LOG_ERROR, "Error reading huffman table\n");
+ return -1;
+ }
+ while (repeat--)
+ dst[i++] = val;
+ }
+ return 0;
+}
+
+static void generate_joint_tables(HYuvContext *s)
+{
+ uint16_t symbols[1 << VLC_BITS];
+ uint16_t bits[1 << VLC_BITS];
+ uint8_t len[1 << VLC_BITS];
+ if (s->bitstream_bpp < 24) {
+ int p, i, y, u;
+ for (p = 0; p < 3; p++) {
+ for (i = y = 0; y < 256; y++) {
+ int len0 = s->len[0][y];
+ int limit = VLC_BITS - len0;
+ if(limit <= 0)
+ continue;
+ for (u = 0; u < 256; u++) {
+ int len1 = s->len[p][u];
+ if (len1 > limit)
+ continue;
+ len[i] = len0 + len1;
+ bits[i] = (s->bits[0][y] << len1) + s->bits[p][u];
+ symbols[i] = (y << 8) + u;
+ if(symbols[i] != 0xffff) // reserved to mean "invalid"
+ i++;
+ }
+ }
+ ff_free_vlc(&s->vlc[3 + p]);
+ ff_init_vlc_sparse(&s->vlc[3 + p], VLC_BITS, i, len, 1, 1,
+ bits, 2, 2, symbols, 2, 2, 0);
+ }
+ } else {
+ uint8_t (*map)[4] = (uint8_t(*)[4])s->pix_bgr_map;
+ int i, b, g, r, code;
+ int p0 = s->decorrelate;
+ int p1 = !s->decorrelate;
+ // restrict the range to +/-16 because that's pretty much guaranteed to
+ // cover all the combinations that fit in 11 bits total, and it doesn't
+ // matter if we miss a few rare codes.
+ for (i = 0, g = -16; g < 16; g++) {
+ int len0 = s->len[p0][g & 255];
+ int limit0 = VLC_BITS - len0;
+ if (limit0 < 2)
+ continue;
+ for (b = -16; b < 16; b++) {
+ int len1 = s->len[p1][b & 255];
+ int limit1 = limit0 - len1;
+ if (limit1 < 1)
+ continue;
+ code = (s->bits[p0][g & 255] << len1) + s->bits[p1][b & 255];
+ for (r = -16; r < 16; r++) {
+ int len2 = s->len[2][r & 255];
+ if (len2 > limit1)
+ continue;
+ len[i] = len0 + len1 + len2;
+ bits[i] = (code << len2) + s->bits[2][r & 255];
+ if (s->decorrelate) {
+ map[i][G] = g;
+ map[i][B] = g + b;
+ map[i][R] = g + r;
+ } else {
+ map[i][B] = g;
+ map[i][G] = b;
+ map[i][R] = r;
+ }
+ i++;
+ }
+ }
+ }
+ ff_free_vlc(&s->vlc[3]);
+ init_vlc(&s->vlc[3], VLC_BITS, i, len, 1, 1, bits, 2, 2, 0);
+ }
+}
+
+static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length)
+{
+ GetBitContext gb;
+ int i;
+
+ init_get_bits(&gb, src, length * 8);
+
+ for (i = 0; i < 3; i++) {
+ if (read_len_table(s->len[i], &gb) < 0)
+ return -1;
+ if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i]) < 0) {
+ return -1;
+ }
+ ff_free_vlc(&s->vlc[i]);
+ init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
+ s->bits[i], 4, 4, 0);
+ }
+
+ generate_joint_tables(s);
+
+ return (get_bits_count(&gb) + 7) / 8;
+}
+
+static int read_old_huffman_tables(HYuvContext *s)
+{
+ GetBitContext gb;
+ int i;
+
+ init_get_bits(&gb, classic_shift_luma,
+ classic_shift_luma_table_size * 8);
+ if (read_len_table(s->len[0], &gb) < 0)
+ return -1;
+
+ init_get_bits(&gb, classic_shift_chroma,
+ classic_shift_chroma_table_size * 8);
+ if (read_len_table(s->len[1], &gb) < 0)
+ return -1;
+
+ for(i=0; i<256; i++) s->bits[0][i] = classic_add_luma [i];
+ for(i=0; i<256; i++) s->bits[1][i] = classic_add_chroma[i];
+
+ if (s->bitstream_bpp >= 24) {
+ memcpy(s->bits[1], s->bits[0], 256 * sizeof(uint32_t));
+ memcpy(s->len[1] , s->len [0], 256 * sizeof(uint8_t));
+ }
+ memcpy(s->bits[2], s->bits[1], 256 * sizeof(uint32_t));
+ memcpy(s->len[2] , s->len [1], 256 * sizeof(uint8_t));
+
+ for (i = 0; i < 3; i++) {
+ ff_free_vlc(&s->vlc[i]);
+ init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
+ s->bits[i], 4, 4, 0);
+ }
+
+ generate_joint_tables(s);
+
+ return 0;
+}
+
+static av_cold int decode_init(AVCodecContext *avctx)
+{
+ HYuvContext *s = avctx->priv_data;
+
+ ff_huffyuv_common_init(avctx);
+ memset(s->vlc, 0, 3 * sizeof(VLC));
+
+ avctx->coded_frame = &s->picture;
+ s->interlaced = s->height > 288;
+
+ s->bgr32 = 1;
+
+ if (avctx->extradata_size) {
+ if ((avctx->bits_per_coded_sample & 7) &&
+ avctx->bits_per_coded_sample != 12)
+ s->version = 1; // do such files exist at all?
+ else
+ s->version = 2;
+ } else
+ s->version = 0;
+
+ if (s->version == 2) {
+ int method, interlace;
+
+ if (avctx->extradata_size < 4)
+ return -1;
+
+ method = ((uint8_t*)avctx->extradata)[0];
+ s->decorrelate = method & 64 ? 1 : 0;
+ s->predictor = method & 63;
+ s->bitstream_bpp = ((uint8_t*)avctx->extradata)[1];
+ if (s->bitstream_bpp == 0)
+ s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
+ interlace = (((uint8_t*)avctx->extradata)[2] & 0x30) >> 4;
+ s->interlaced = (interlace == 1) ? 1 : (interlace == 2) ? 0 : s->interlaced;
+ s->context = ((uint8_t*)avctx->extradata)[2] & 0x40 ? 1 : 0;
+
+ if ( read_huffman_tables(s, ((uint8_t*)avctx->extradata) + 4,
+ avctx->extradata_size - 4) < 0)
+ return -1;
+ }else{
+ switch (avctx->bits_per_coded_sample & 7) {
+ case 1:
+ s->predictor = LEFT;
+ s->decorrelate = 0;
+ break;
+ case 2:
+ s->predictor = LEFT;
+ s->decorrelate = 1;
+ break;
+ case 3:
+ s->predictor = PLANE;
+ s->decorrelate = avctx->bits_per_coded_sample >= 24;
+ break;
+ case 4:
+ s->predictor = MEDIAN;
+ s->decorrelate = 0;
+ break;
+ default:
+ s->predictor = LEFT; //OLD
+ s->decorrelate = 0;
+ break;
+ }
+ s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
+ s->context = 0;
+
+ if (read_old_huffman_tables(s) < 0)
+ return -1;
+ }
+
+ switch (s->bitstream_bpp) {
+ case 12:
+ avctx->pix_fmt = AV_PIX_FMT_YUV420P;
+ break;
+ case 16:
+ if (s->yuy2) {
+ avctx->pix_fmt = AV_PIX_FMT_YUYV422;
+ } else {
+ avctx->pix_fmt = AV_PIX_FMT_YUV422P;
+ }
+ break;
+ case 24:
+ case 32:
+ if (s->bgr32) {
+ avctx->pix_fmt = AV_PIX_FMT_RGB32;
+ } else {
+ avctx->pix_fmt = AV_PIX_FMT_BGR24;
+ }
+ break;
+ default:
+ return AVERROR_INVALIDDATA;
+ }
+
+ ff_huffyuv_alloc_temp(s);
+
+ return 0;
+}
+
+static av_cold int decode_init_thread_copy(AVCodecContext *avctx)
+{
+ HYuvContext *s = avctx->priv_data;
+ int i;
+
+ avctx->coded_frame= &s->picture;
+ ff_huffyuv_alloc_temp(s);
+
+ for (i = 0; i < 6; i++)
+ s->vlc[i].table = NULL;
+
+ if (s->version == 2) {
+ if (read_huffman_tables(s, ((uint8_t*)avctx->extradata) + 4,
+ avctx->extradata_size) < 0)
+ return -1;
+ } else {
+ if (read_old_huffman_tables(s) < 0)
+ return -1;
+ }
+
+ return 0;
+}
+
+/* TODO instead of restarting the read when the code isn't in the first level
+ * of the joint table, jump into the 2nd level of the individual table. */
+#define READ_2PIX(dst0, dst1, plane1){\
+ uint16_t code = get_vlc2(&s->gb, s->vlc[3+plane1].table, VLC_BITS, 1);\
+ if(code != 0xffff){\
+ dst0 = code>>8;\
+ dst1 = code;\
+ }else{\
+ dst0 = get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);\
+ dst1 = get_vlc2(&s->gb, s->vlc[plane1].table, VLC_BITS, 3);\
+ }\
+}
+
+static void decode_422_bitstream(HYuvContext *s, int count)
+{
+ int i;
+
+ count /= 2;
+
+ if (count >= (get_bits_left(&s->gb)) / (31 * 4)) {
+ for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
+ READ_2PIX(s->temp[0][2 * i ], s->temp[1][i], 1);
+ READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
+ }
+ } else {
+ for (i = 0; i < count; i++) {
+ READ_2PIX(s->temp[0][2 * i ], s->temp[1][i], 1);
+ READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
+ }
+ }
+}
+
+static void decode_gray_bitstream(HYuvContext *s, int count)
+{
+ int i;
+
+ count/=2;
+
+ if (count >= (get_bits_left(&s->gb)) / (31 * 2)) {
+ for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
+ READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
+ }
+ } else {
+ for(i=0; i<count; i++){
+ READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
+ }
+ }
+}
+
+static av_always_inline void decode_bgr_1(HYuvContext *s, int count,
+ int decorrelate, int alpha)
+{
+ int i;
+ for (i = 0; i < count; i++) {
+ int code = get_vlc2(&s->gb, s->vlc[3].table, VLC_BITS, 1);
+ if (code != -1) {
+ *(uint32_t*)&s->temp[0][4 * i] = s->pix_bgr_map[code];
+ } else if(decorrelate) {
+ s->temp[0][4 * i + G] = get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
+ s->temp[0][4 * i + B] = get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3) +
+ s->temp[0][4 * i + G];
+ s->temp[0][4 * i + R] = get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3) +
+ s->temp[0][4 * i + G];
+ } else {
+ s->temp[0][4 * i + B] = get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
+ s->temp[0][4 * i + G] = get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
+ s->temp[0][4 * i + R] = get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3);
+ }
+ if (alpha)
+ s->temp[0][4 * i + A] = get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3);
+ }
+}
+
+static void decode_bgr_bitstream(HYuvContext *s, int count)
+{
+ if (s->decorrelate) {
+ if (s->bitstream_bpp==24)
+ decode_bgr_1(s, count, 1, 0);
+ else
+ decode_bgr_1(s, count, 1, 1);
+ } else {
+ if (s->bitstream_bpp==24)
+ decode_bgr_1(s, count, 0, 0);
+ else
+ decode_bgr_1(s, count, 0, 1);
+ }
+}
+
+static void draw_slice(HYuvContext *s, int y)
+{
+ int h, cy, i;
+ int offset[AV_NUM_DATA_POINTERS];
+
+ if (s->avctx->draw_horiz_band==NULL)
+ return;
+
+ h = y - s->last_slice_end;
+ y -= h;
+
+ if (s->bitstream_bpp == 12) {
+ cy = y>>1;
+ } else {
+ cy = y;
+ }
+
+ offset[0] = s->picture.linesize[0]*y;
+ offset[1] = s->picture.linesize[1]*cy;
+ offset[2] = s->picture.linesize[2]*cy;
+ for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
+ offset[i] = 0;
+ emms_c();
+
+ s->avctx->draw_horiz_band(s->avctx, &s->picture, offset, y, 3, h);
+
+ s->last_slice_end = y + h;
+}
+
+static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
+ AVPacket *avpkt)
+{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
+ HYuvContext *s = avctx->priv_data;
+ const int width = s->width;
+ const int width2 = s->width>>1;
+ const int height = s->height;
+ int fake_ystride, fake_ustride, fake_vstride;
+ AVFrame * const p = &s->picture;
+ int table_size = 0;
+
+ AVFrame *picture = data;
+
+ av_fast_malloc(&s->bitstream_buffer,
+ &s->bitstream_buffer_size,
+ buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!s->bitstream_buffer)
+ return AVERROR(ENOMEM);
+
+ memset(s->bitstream_buffer + buf_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
+ s->dsp.bswap_buf((uint32_t*)s->bitstream_buffer,
+ (const uint32_t*)buf, buf_size / 4);
+
+ if (p->data[0])
+ ff_thread_release_buffer(avctx, p);
+
+ p->reference = 0;
+ if (ff_thread_get_buffer(avctx, p) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return -1;
+ }
+
+ if (s->context) {
+ table_size = read_huffman_tables(s, s->bitstream_buffer, buf_size);
+ if (table_size < 0)
+ return -1;
+ }
+
+ if ((unsigned)(buf_size-table_size) >= INT_MAX / 8)
+ return -1;
+
+ init_get_bits(&s->gb, s->bitstream_buffer+table_size,
+ (buf_size-table_size) * 8);
+
+ fake_ystride = s->interlaced ? p->linesize[0] * 2 : p->linesize[0];
+ fake_ustride = s->interlaced ? p->linesize[1] * 2 : p->linesize[1];
+ fake_vstride = s->interlaced ? p->linesize[2] * 2 : p->linesize[2];
+
+ s->last_slice_end = 0;
+
+ if (s->bitstream_bpp < 24) {
+ int y, cy;
+ int lefty, leftu, leftv;
+ int lefttopy, lefttopu, lefttopv;
+
+ if (s->yuy2) {
+ p->data[0][3] = get_bits(&s->gb, 8);
+ p->data[0][2] = get_bits(&s->gb, 8);
+ p->data[0][1] = get_bits(&s->gb, 8);
+ p->data[0][0] = get_bits(&s->gb, 8);
+
+ av_log(avctx, AV_LOG_ERROR,
+ "YUY2 output is not implemented yet\n");
+ return -1;
+ } else {
+
+ leftv = p->data[2][0] = get_bits(&s->gb, 8);
+ lefty = p->data[0][1] = get_bits(&s->gb, 8);
+ leftu = p->data[1][0] = get_bits(&s->gb, 8);
+ p->data[0][0] = get_bits(&s->gb, 8);
+
+ switch (s->predictor) {
+ case LEFT:
+ case PLANE:
+ decode_422_bitstream(s, width-2);
+ lefty = s->dsp.add_hfyu_left_prediction(p->data[0] + 2, s->temp[0], width-2, lefty);
+ if (!(s->flags&CODEC_FLAG_GRAY)) {
+ leftu = s->dsp.add_hfyu_left_prediction(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
+ leftv = s->dsp.add_hfyu_left_prediction(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
+ }
+
+ for (cy = y = 1; y < s->height; y++, cy++) {
+ uint8_t *ydst, *udst, *vdst;
+
+ if (s->bitstream_bpp == 12) {
+ decode_gray_bitstream(s, width);
+
+ ydst = p->data[0] + p->linesize[0] * y;
+
+ lefty = s->dsp.add_hfyu_left_prediction(ydst, s->temp[0], width, lefty);
+ if (s->predictor == PLANE) {
+ if (y > s->interlaced)
+ s->dsp.add_bytes(ydst, ydst - fake_ystride, width);
+ }
+ y++;
+ if (y >= s->height) break;
+ }
+
+ draw_slice(s, y);
+
+ ydst = p->data[0] + p->linesize[0]*y;
+ udst = p->data[1] + p->linesize[1]*cy;
+ vdst = p->data[2] + p->linesize[2]*cy;
+
+ decode_422_bitstream(s, width);
+ lefty = s->dsp.add_hfyu_left_prediction(ydst, s->temp[0], width, lefty);
+ if (!(s->flags & CODEC_FLAG_GRAY)) {
+ leftu= s->dsp.add_hfyu_left_prediction(udst, s->temp[1], width2, leftu);
+ leftv= s->dsp.add_hfyu_left_prediction(vdst, s->temp[2], width2, leftv);
+ }
+ if (s->predictor == PLANE) {
+ if (cy > s->interlaced) {
+ s->dsp.add_bytes(ydst, ydst - fake_ystride, width);
+ if (!(s->flags & CODEC_FLAG_GRAY)) {
+ s->dsp.add_bytes(udst, udst - fake_ustride, width2);
+ s->dsp.add_bytes(vdst, vdst - fake_vstride, width2);
+ }
+ }
+ }
+ }
+ draw_slice(s, height);
+
+ break;
+ case MEDIAN:
+ /* first line except first 2 pixels is left predicted */
+ decode_422_bitstream(s, width - 2);
+ lefty= s->dsp.add_hfyu_left_prediction(p->data[0] + 2, s->temp[0], width - 2, lefty);
+ if (!(s->flags & CODEC_FLAG_GRAY)) {
+ leftu = s->dsp.add_hfyu_left_prediction(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
+ leftv = s->dsp.add_hfyu_left_prediction(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
+ }
+
+ cy = y = 1;
+
+ /* second line is left predicted for interlaced case */
+ if (s->interlaced) {
+ decode_422_bitstream(s, width);
+ lefty = s->dsp.add_hfyu_left_prediction(p->data[0] + p->linesize[0], s->temp[0], width, lefty);
+ if (!(s->flags & CODEC_FLAG_GRAY)) {
+ leftu = s->dsp.add_hfyu_left_prediction(p->data[1] + p->linesize[2], s->temp[1], width2, leftu);
+ leftv = s->dsp.add_hfyu_left_prediction(p->data[2] + p->linesize[1], s->temp[2], width2, leftv);
+ }
+ y++; cy++;
+ }
+
+ /* next 4 pixels are left predicted too */
+ decode_422_bitstream(s, 4);
+ lefty = s->dsp.add_hfyu_left_prediction(p->data[0] + fake_ystride, s->temp[0], 4, lefty);
+ if (!(s->flags&CODEC_FLAG_GRAY)) {
+ leftu = s->dsp.add_hfyu_left_prediction(p->data[1] + fake_ustride, s->temp[1], 2, leftu);
+ leftv = s->dsp.add_hfyu_left_prediction(p->data[2] + fake_vstride, s->temp[2], 2, leftv);
+ }
+
+ /* next line except the first 4 pixels is median predicted */
+ lefttopy = p->data[0][3];
+ decode_422_bitstream(s, width - 4);
+ s->dsp.add_hfyu_median_prediction(p->data[0] + fake_ystride+4, p->data[0]+4, s->temp[0], width-4, &lefty, &lefttopy);
+ if (!(s->flags&CODEC_FLAG_GRAY)) {
+ lefttopu = p->data[1][1];
+ lefttopv = p->data[2][1];
+ s->dsp.add_hfyu_median_prediction(p->data[1] + fake_ustride+2, p->data[1] + 2, s->temp[1], width2 - 2, &leftu, &lefttopu);
+ s->dsp.add_hfyu_median_prediction(p->data[2] + fake_vstride+2, p->data[2] + 2, s->temp[2], width2 - 2, &leftv, &lefttopv);
+ }
+ y++; cy++;
+
+ for (; y<height; y++, cy++) {
+ uint8_t *ydst, *udst, *vdst;
+
+ if (s->bitstream_bpp == 12) {
+ while (2 * cy > y) {
+ decode_gray_bitstream(s, width);
+ ydst = p->data[0] + p->linesize[0] * y;
+ s->dsp.add_hfyu_median_prediction(ydst, ydst - fake_ystride, s->temp[0], width, &lefty, &lefttopy);
+ y++;
+ }
+ if (y >= height) break;
+ }
+ draw_slice(s, y);
+
+ decode_422_bitstream(s, width);
+
+ ydst = p->data[0] + p->linesize[0] * y;
+ udst = p->data[1] + p->linesize[1] * cy;
+ vdst = p->data[2] + p->linesize[2] * cy;
+
+ s->dsp.add_hfyu_median_prediction(ydst, ydst - fake_ystride, s->temp[0], width, &lefty, &lefttopy);
+ if (!(s->flags & CODEC_FLAG_GRAY)) {
+ s->dsp.add_hfyu_median_prediction(udst, udst - fake_ustride, s->temp[1], width2, &leftu, &lefttopu);
+ s->dsp.add_hfyu_median_prediction(vdst, vdst - fake_vstride, s->temp[2], width2, &leftv, &lefttopv);
+ }
+ }
+
+ draw_slice(s, height);
+ break;
+ }
+ }
+ } else {
+ int y;
+ int leftr, leftg, leftb, lefta;
+ const int last_line = (height - 1) * p->linesize[0];
+
+ if (s->bitstream_bpp == 32) {
+ lefta = p->data[0][last_line+A] = get_bits(&s->gb, 8);
+ leftr = p->data[0][last_line+R] = get_bits(&s->gb, 8);
+ leftg = p->data[0][last_line+G] = get_bits(&s->gb, 8);
+ leftb = p->data[0][last_line+B] = get_bits(&s->gb, 8);
+ } else {
+ leftr = p->data[0][last_line+R] = get_bits(&s->gb, 8);
+ leftg = p->data[0][last_line+G] = get_bits(&s->gb, 8);
+ leftb = p->data[0][last_line+B] = get_bits(&s->gb, 8);
+ lefta = p->data[0][last_line+A] = 255;
+ skip_bits(&s->gb, 8);
+ }
+
+ if (s->bgr32) {
+ switch (s->predictor) {
+ case LEFT:
+ case PLANE:
+ decode_bgr_bitstream(s, width - 1);
+ s->dsp.add_hfyu_left_prediction_bgr32(p->data[0] + last_line+4, s->temp[0], width - 1, &leftr, &leftg, &leftb, &lefta);
+
+ for (y = s->height - 2; y >= 0; y--) { //Yes it is stored upside down.
+ decode_bgr_bitstream(s, width);
+
+ s->dsp.add_hfyu_left_prediction_bgr32(p->data[0] + p->linesize[0]*y, s->temp[0], width, &leftr, &leftg, &leftb, &lefta);
+ if (s->predictor == PLANE) {
+ if (s->bitstream_bpp != 32) lefta = 0;
+ if ((y & s->interlaced) == 0 &&
+ y < s->height - 1 - s->interlaced) {
+ s->dsp.add_bytes(p->data[0] + p->linesize[0] * y,
+ p->data[0] + p->linesize[0] * y +
+ fake_ystride, fake_ystride);
+ }
+ }
+ }
+ // just 1 large slice as this is not possible in reverse order
+ draw_slice(s, height);
+ break;
+ default:
+ av_log(avctx, AV_LOG_ERROR,
+ "prediction type not supported!\n");
+ }
+ }else{
+ av_log(avctx, AV_LOG_ERROR,
+ "BGR24 output is not implemented yet\n");
+ return -1;
+ }
+ }
+ emms_c();
+
+ *picture = *p;
+ *got_frame = 1;
+
+ return (get_bits_count(&s->gb) + 31) / 32 * 4 + table_size;
+}
+
+static av_cold int decode_end(AVCodecContext *avctx)
+{
+ HYuvContext *s = avctx->priv_data;
+ int i;
+
+ if (s->picture.data[0])
+ avctx->release_buffer(avctx, &s->picture);
+
+ ff_huffyuv_common_end(s);
+ av_freep(&s->bitstream_buffer);
+
+ for (i = 0; i < 6; i++) {
+ ff_free_vlc(&s->vlc[i]);
+ }
+
+ return 0;
+}
+
+#if CONFIG_HUFFYUV_DECODER
+AVCodec ff_huffyuv_decoder = {
+ .name = "huffyuv",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_HUFFYUV,
+ .priv_data_size = sizeof(HYuvContext),
+ .init = decode_init,
+ .close = decode_end,
+ .decode = decode_frame,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
+ CODEC_CAP_FRAME_THREADS,
+ .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
+ .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
+};
+#endif
+
+#if CONFIG_FFVHUFF_DECODER
+AVCodec ff_ffvhuff_decoder = {
+ .name = "ffvhuff",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_FFVHUFF,
+ .priv_data_size = sizeof(HYuvContext),
+ .init = decode_init,
+ .close = decode_end,
+ .decode = decode_frame,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
+ CODEC_CAP_FRAME_THREADS,
+ .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
+ .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
+};
+#endif
diff --git a/libavcodec/huffyuvenc.c b/libavcodec/huffyuvenc.c
new file mode 100644
index 0000000..13c0a79
--- /dev/null
+++ b/libavcodec/huffyuvenc.c
@@ -0,0 +1,633 @@
+/*
+ * Copyright (c) 2002-2003 Michael Niedermayer <michaelni at gmx.at>
+ *
+ * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
+ * the algorithm used
+ *
+ * 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
+ * huffyuv encoder
+ */
+
+#include "avcodec.h"
+#include "huffyuv.h"
+#include "huffman.h"
+#include "put_bits.h"
+
+static inline int sub_left_prediction(HYuvContext *s, uint8_t *dst,
+ uint8_t *src, int w, int left)
+{
+ int i;
+ if (w < 32) {
+ for (i = 0; i < w; i++) {
+ const int temp = src[i];
+ dst[i] = temp - left;
+ left = temp;
+ }
+ return left;
+ } else {
+ for (i = 0; i < 16; i++) {
+ const int temp = src[i];
+ dst[i] = temp - left;
+ left = temp;
+ }
+ s->dsp.diff_bytes(dst + 16, src + 16, src + 15, w - 16);
+ return src[w-1];
+ }
+}
+
+static inline void sub_left_prediction_bgr32(HYuvContext *s, uint8_t *dst,
+ uint8_t *src, int w,
+ int *red, int *green, int *blue)
+{
+ int i;
+ int r,g,b;
+ r = *red;
+ g = *green;
+ b = *blue;
+
+ for (i = 0; i < FFMIN(w, 4); i++) {
+ const int rt = src[i * 4 + R];
+ const int gt = src[i * 4 + G];
+ const int bt = src[i * 4 + B];
+ dst[i * 4 + R] = rt - r;
+ dst[i * 4 + G] = gt - g;
+ dst[i * 4 + B] = bt - b;
+ r = rt;
+ g = gt;
+ b = bt;
+ }
+
+ s->dsp.diff_bytes(dst + 16, src + 16, src + 12, w * 4 - 16);
+
+ *red = src[(w - 1) * 4 + R];
+ *green = src[(w - 1) * 4 + G];
+ *blue = src[(w - 1) * 4 + B];
+}
+
+static int store_table(HYuvContext *s, const uint8_t *len, uint8_t *buf)
+{
+ int i;
+ int index = 0;
+
+ for (i = 0; i < 256;) {
+ int val = len[i];
+ int repeat = 0;
+
+ for (; i < 256 && len[i] == val && repeat < 255; i++)
+ repeat++;
+
+ assert(val < 32 && val >0 && repeat<256 && repeat>0);
+ if ( repeat > 7) {
+ buf[index++] = val;
+ buf[index++] = repeat;
+ } else {
+ buf[index++] = val | (repeat << 5);
+ }
+ }
+
+ return index;
+}
+
+static av_cold int encode_init(AVCodecContext *avctx)
+{
+ HYuvContext *s = avctx->priv_data;
+ int i, j;
+
+ ff_huffyuv_common_init(avctx);
+
+ avctx->extradata = av_mallocz(1024*30); // 256*3+4 == 772
+ avctx->stats_out = av_mallocz(1024*30); // 21*256*3(%llu ) + 3(\n) + 1(0) = 16132
+ s->version = 2;
+
+ avctx->coded_frame = &s->picture;
+
+ switch (avctx->pix_fmt) {
+ case AV_PIX_FMT_YUV420P:
+ s->bitstream_bpp = 12;
+ break;
+ case AV_PIX_FMT_YUV422P:
+ s->bitstream_bpp = 16;
+ break;
+ case AV_PIX_FMT_RGB32:
+ s->bitstream_bpp = 24;
+ break;
+ default:
+ av_log(avctx, AV_LOG_ERROR, "format not supported\n");
+ return -1;
+ }
+ avctx->bits_per_coded_sample = s->bitstream_bpp;
+ s->decorrelate = s->bitstream_bpp >= 24;
+ s->predictor = avctx->prediction_method;
+ s->interlaced = avctx->flags&CODEC_FLAG_INTERLACED_ME ? 1 : 0;
+ if (avctx->context_model == 1) {
+ s->context = avctx->context_model;
+ if (s->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)) {
+ av_log(avctx, AV_LOG_ERROR,
+ "context=1 is not compatible with "
+ "2 pass huffyuv encoding\n");
+ return -1;
+ }
+ }else s->context= 0;
+
+ if (avctx->codec->id == AV_CODEC_ID_HUFFYUV) {
+ if (avctx->pix_fmt == AV_PIX_FMT_YUV420P) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Error: YV12 is not supported by huffyuv; use "
+ "vcodec=ffvhuff or format=422p\n");
+ return -1;
+ }
+ if (avctx->context_model) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Error: per-frame huffman tables are not supported "
+ "by huffyuv; use vcodec=ffvhuff\n");
+ return -1;
+ }
+ if (s->interlaced != ( s->height > 288 ))
+ av_log(avctx, AV_LOG_INFO,
+ "using huffyuv 2.2.0 or newer interlacing flag\n");
+ }
+
+ if (s->bitstream_bpp >= 24 && s->predictor == MEDIAN) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Error: RGB is incompatible with median predictor\n");
+ return -1;
+ }
+
+ ((uint8_t*)avctx->extradata)[0] = s->predictor | (s->decorrelate << 6);
+ ((uint8_t*)avctx->extradata)[1] = s->bitstream_bpp;
+ ((uint8_t*)avctx->extradata)[2] = s->interlaced ? 0x10 : 0x20;
+ if (s->context)
+ ((uint8_t*)avctx->extradata)[2] |= 0x40;
+ ((uint8_t*)avctx->extradata)[3] = 0;
+ s->avctx->extradata_size = 4;
+
+ if (avctx->stats_in) {
+ char *p = avctx->stats_in;
+
+ for (i = 0; i < 3; i++)
+ for (j = 0; j < 256; j++)
+ s->stats[i][j] = 1;
+
+ for (;;) {
+ for (i = 0; i < 3; i++) {
+ char *next;
+
+ for (j = 0; j < 256; j++) {
+ s->stats[i][j] += strtol(p, &next, 0);
+ if (next == p) return -1;
+ p = next;
+ }
+ }
+ if (p[0] == 0 || p[1] == 0 || p[2] == 0) break;
+ }
+ } else {
+ for (i = 0; i < 3; i++)
+ for (j = 0; j < 256; j++) {
+ int d = FFMIN(j, 256 - j);
+
+ s->stats[i][j] = 100000000 / (d + 1);
+ }
+ }
+
+ for (i = 0; i < 3; i++) {
+ ff_huff_gen_len_table(s->len[i], s->stats[i]);
+
+ if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i]) < 0) {
+ return -1;
+ }
+
+ s->avctx->extradata_size +=
+ store_table(s, s->len[i], &((uint8_t*)s->avctx->extradata)[s->avctx->extradata_size]);
+ }
+
+ if (s->context) {
+ for (i = 0; i < 3; i++) {
+ int pels = s->width * s->height / (i ? 40 : 10);
+ for (j = 0; j < 256; j++) {
+ int d = FFMIN(j, 256 - j);
+ s->stats[i][j] = pels/(d + 1);
+ }
+ }
+ } else {
+ for (i = 0; i < 3; i++)
+ for (j = 0; j < 256; j++)
+ s->stats[i][j]= 0;
+ }
+
+ ff_huffyuv_alloc_temp(s);
+
+ s->picture_number=0;
+
+ return 0;
+}
+static int encode_422_bitstream(HYuvContext *s, int offset, int count)
+{
+ int i;
+ const uint8_t *y = s->temp[0] + offset;
+ const uint8_t *u = s->temp[1] + offset / 2;
+ const uint8_t *v = s->temp[2] + offset / 2;
+
+ if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < 2 * 4 * count) {
+ av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
+ return -1;
+ }
+
+#define LOAD4\
+ int y0 = y[2 * i];\
+ int y1 = y[2 * i + 1];\
+ int u0 = u[i];\
+ int v0 = v[i];
+
+ count /= 2;
+
+ if (s->flags & CODEC_FLAG_PASS1) {
+ for(i = 0; i < count; i++) {
+ LOAD4;
+ s->stats[0][y0]++;
+ s->stats[1][u0]++;
+ s->stats[0][y1]++;
+ s->stats[2][v0]++;
+ }
+ }
+ if (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)
+ return 0;
+ if (s->context) {
+ for (i = 0; i < count; i++) {
+ LOAD4;
+ s->stats[0][y0]++;
+ put_bits(&s->pb, s->len[0][y0], s->bits[0][y0]);
+ s->stats[1][u0]++;
+ put_bits(&s->pb, s->len[1][u0], s->bits[1][u0]);
+ s->stats[0][y1]++;
+ put_bits(&s->pb, s->len[0][y1], s->bits[0][y1]);
+ s->stats[2][v0]++;
+ put_bits(&s->pb, s->len[2][v0], s->bits[2][v0]);
+ }
+ } else {
+ for(i = 0; i < count; i++) {
+ LOAD4;
+ put_bits(&s->pb, s->len[0][y0], s->bits[0][y0]);
+ put_bits(&s->pb, s->len[1][u0], s->bits[1][u0]);
+ put_bits(&s->pb, s->len[0][y1], s->bits[0][y1]);
+ put_bits(&s->pb, s->len[2][v0], s->bits[2][v0]);
+ }
+ }
+ return 0;
+}
+
+static int encode_gray_bitstream(HYuvContext *s, int count)
+{
+ int i;
+
+ if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < 4 * count) {
+ av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
+ return -1;
+ }
+
+#define LOAD2\
+ int y0 = s->temp[0][2 * i];\
+ int y1 = s->temp[0][2 * i + 1];
+#define STAT2\
+ s->stats[0][y0]++;\
+ s->stats[0][y1]++;
+#define WRITE2\
+ put_bits(&s->pb, s->len[0][y0], s->bits[0][y0]);\
+ put_bits(&s->pb, s->len[0][y1], s->bits[0][y1]);
+
+ count /= 2;
+
+ if (s->flags & CODEC_FLAG_PASS1) {
+ for (i = 0; i < count; i++) {
+ LOAD2;
+ STAT2;
+ }
+ }
+ if (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)
+ return 0;
+
+ if (s->context) {
+ for (i = 0; i < count; i++) {
+ LOAD2;
+ STAT2;
+ WRITE2;
+ }
+ } else {
+ for (i = 0; i < count; i++) {
+ LOAD2;
+ WRITE2;
+ }
+ }
+ return 0;
+}
+
+static int encode_bgr_bitstream(HYuvContext *s, int count)
+{
+ int i;
+
+ if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < 3 * 4 * count) {
+ av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
+ return -1;
+ }
+
+#define LOAD3\
+ int g = s->temp[0][4 * i + G];\
+ int b = (s->temp[0][4 * i + B] - g) & 0xff;\
+ int r = (s->temp[0][4 * i + R] - g) & 0xff;
+#define STAT3\
+ s->stats[0][b]++;\
+ s->stats[1][g]++;\
+ s->stats[2][r]++;
+#define WRITE3\
+ put_bits(&s->pb, s->len[1][g], s->bits[1][g]);\
+ put_bits(&s->pb, s->len[0][b], s->bits[0][b]);\
+ put_bits(&s->pb, s->len[2][r], s->bits[2][r]);
+
+ if ((s->flags & CODEC_FLAG_PASS1) &&
+ (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)) {
+ for (i = 0; i < count; i++) {
+ LOAD3;
+ STAT3;
+ }
+ } else if (s->context || (s->flags & CODEC_FLAG_PASS1)) {
+ for (i = 0; i < count; i++) {
+ LOAD3;
+ STAT3;
+ WRITE3;
+ }
+ } else {
+ for (i = 0; i < count; i++) {
+ LOAD3;
+ WRITE3;
+ }
+ }
+ return 0;
+}
+
+static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+ const AVFrame *pict, int *got_packet)
+{
+ HYuvContext *s = avctx->priv_data;
+ const int width = s->width;
+ const int width2 = s->width>>1;
+ const int height = s->height;
+ const int fake_ystride = s->interlaced ? pict->linesize[0]*2 : pict->linesize[0];
+ const int fake_ustride = s->interlaced ? pict->linesize[1]*2 : pict->linesize[1];
+ const int fake_vstride = s->interlaced ? pict->linesize[2]*2 : pict->linesize[2];
+ AVFrame * const p = &s->picture;
+ int i, j, size = 0, ret;
+
+ if (!pkt->data &&
+ (ret = av_new_packet(pkt, width * height * 3 * 4 + FF_MIN_BUFFER_SIZE)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Error allocating output packet.\n");
+ return ret;
+ }
+
+ *p = *pict;
+ p->pict_type = AV_PICTURE_TYPE_I;
+ p->key_frame = 1;
+
+ if (s->context) {
+ for (i = 0; i < 3; i++) {
+ ff_huff_gen_len_table(s->len[i], s->stats[i]);
+ if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i]) < 0)
+ return -1;
+ size += store_table(s, s->len[i], &pkt->data[size]);
+ }
+
+ for (i = 0; i < 3; i++)
+ for (j = 0; j < 256; j++)
+ s->stats[i][j] >>= 1;
+ }
+
+ init_put_bits(&s->pb, pkt->data + size, pkt->size - size);
+
+ if (avctx->pix_fmt == AV_PIX_FMT_YUV422P ||
+ avctx->pix_fmt == AV_PIX_FMT_YUV420P) {
+ int lefty, leftu, leftv, y, cy;
+
+ put_bits(&s->pb, 8, leftv = p->data[2][0]);
+ put_bits(&s->pb, 8, lefty = p->data[0][1]);
+ put_bits(&s->pb, 8, leftu = p->data[1][0]);
+ put_bits(&s->pb, 8, p->data[0][0]);
+
+ lefty = sub_left_prediction(s, s->temp[0], p->data[0], width , 0);
+ leftu = sub_left_prediction(s, s->temp[1], p->data[1], width2, 0);
+ leftv = sub_left_prediction(s, s->temp[2], p->data[2], width2, 0);
+
+ encode_422_bitstream(s, 2, width-2);
+
+ if (s->predictor==MEDIAN) {
+ int lefttopy, lefttopu, lefttopv;
+ cy = y = 1;
+ if (s->interlaced) {
+ lefty = sub_left_prediction(s, s->temp[0], p->data[0] + p->linesize[0], width , lefty);
+ leftu = sub_left_prediction(s, s->temp[1], p->data[1] + p->linesize[1], width2, leftu);
+ leftv = sub_left_prediction(s, s->temp[2], p->data[2] + p->linesize[2], width2, leftv);
+
+ encode_422_bitstream(s, 0, width);
+ y++; cy++;
+ }
+
+ lefty = sub_left_prediction(s, s->temp[0], p->data[0] + fake_ystride, 4, lefty);
+ leftu = sub_left_prediction(s, s->temp[1], p->data[1] + fake_ustride, 2, leftu);
+ leftv = sub_left_prediction(s, s->temp[2], p->data[2] + fake_vstride, 2, leftv);
+
+ encode_422_bitstream(s, 0, 4);
+
+ lefttopy = p->data[0][3];
+ lefttopu = p->data[1][1];
+ lefttopv = p->data[2][1];
+ s->dsp.sub_hfyu_median_prediction(s->temp[0], p->data[0]+4, p->data[0] + fake_ystride + 4, width - 4 , &lefty, &lefttopy);
+ s->dsp.sub_hfyu_median_prediction(s->temp[1], p->data[1]+2, p->data[1] + fake_ustride + 2, width2 - 2, &leftu, &lefttopu);
+ s->dsp.sub_hfyu_median_prediction(s->temp[2], p->data[2]+2, p->data[2] + fake_vstride + 2, width2 - 2, &leftv, &lefttopv);
+ encode_422_bitstream(s, 0, width - 4);
+ y++; cy++;
+
+ for (; y < height; y++,cy++) {
+ uint8_t *ydst, *udst, *vdst;
+
+ if (s->bitstream_bpp == 12) {
+ while (2 * cy > y) {
+ ydst = p->data[0] + p->linesize[0] * y;
+ s->dsp.sub_hfyu_median_prediction(s->temp[0], ydst - fake_ystride, ydst, width , &lefty, &lefttopy);
+ encode_gray_bitstream(s, width);
+ y++;
+ }
+ if (y >= height) break;
+ }
+ ydst = p->data[0] + p->linesize[0] * y;
+ udst = p->data[1] + p->linesize[1] * cy;
+ vdst = p->data[2] + p->linesize[2] * cy;
+
+ s->dsp.sub_hfyu_median_prediction(s->temp[0], ydst - fake_ystride, ydst, width , &lefty, &lefttopy);
+ s->dsp.sub_hfyu_median_prediction(s->temp[1], udst - fake_ustride, udst, width2, &leftu, &lefttopu);
+ s->dsp.sub_hfyu_median_prediction(s->temp[2], vdst - fake_vstride, vdst, width2, &leftv, &lefttopv);
+
+ encode_422_bitstream(s, 0, width);
+ }
+ } else {
+ for (cy = y = 1; y < height; y++, cy++) {
+ uint8_t *ydst, *udst, *vdst;
+
+ /* encode a luma only line & y++ */
+ if (s->bitstream_bpp == 12) {
+ ydst = p->data[0] + p->linesize[0] * y;
+
+ if (s->predictor == PLANE && s->interlaced < y) {
+ s->dsp.diff_bytes(s->temp[1], ydst, ydst - fake_ystride, width);
+
+ lefty = sub_left_prediction(s, s->temp[0], s->temp[1], width , lefty);
+ } else {
+ lefty = sub_left_prediction(s, s->temp[0], ydst, width , lefty);
+ }
+ encode_gray_bitstream(s, width);
+ y++;
+ if (y >= height) break;
+ }
+
+ ydst = p->data[0] + p->linesize[0] * y;
+ udst = p->data[1] + p->linesize[1] * cy;
+ vdst = p->data[2] + p->linesize[2] * cy;
+
+ if (s->predictor == PLANE && s->interlaced < cy) {
+ s->dsp.diff_bytes(s->temp[1], ydst, ydst - fake_ystride, width);
+ s->dsp.diff_bytes(s->temp[2], udst, udst - fake_ustride, width2);
+ s->dsp.diff_bytes(s->temp[2] + width2, vdst, vdst - fake_vstride, width2);
+
+ lefty = sub_left_prediction(s, s->temp[0], s->temp[1], width , lefty);
+ leftu = sub_left_prediction(s, s->temp[1], s->temp[2], width2, leftu);
+ leftv = sub_left_prediction(s, s->temp[2], s->temp[2] + width2, width2, leftv);
+ } else {
+ lefty = sub_left_prediction(s, s->temp[0], ydst, width , lefty);
+ leftu = sub_left_prediction(s, s->temp[1], udst, width2, leftu);
+ leftv = sub_left_prediction(s, s->temp[2], vdst, width2, leftv);
+ }
+
+ encode_422_bitstream(s, 0, width);
+ }
+ }
+ } else if(avctx->pix_fmt == AV_PIX_FMT_RGB32) {
+ uint8_t *data = p->data[0] + (height - 1) * p->linesize[0];
+ const int stride = -p->linesize[0];
+ const int fake_stride = -fake_ystride;
+ int y;
+ int leftr, leftg, leftb;
+
+ put_bits(&s->pb, 8, leftr = data[R]);
+ put_bits(&s->pb, 8, leftg = data[G]);
+ put_bits(&s->pb, 8, leftb = data[B]);
+ put_bits(&s->pb, 8, 0);
+
+ sub_left_prediction_bgr32(s, s->temp[0], data + 4, width - 1, &leftr, &leftg, &leftb);
+ encode_bgr_bitstream(s, width - 1);
+
+ for (y = 1; y < s->height; y++) {
+ uint8_t *dst = data + y*stride;
+ if (s->predictor == PLANE && s->interlaced < y) {
+ s->dsp.diff_bytes(s->temp[1], dst, dst - fake_stride, width * 4);
+ sub_left_prediction_bgr32(s, s->temp[0], s->temp[1], width, &leftr, &leftg, &leftb);
+ } else {
+ sub_left_prediction_bgr32(s, s->temp[0], dst, width, &leftr, &leftg, &leftb);
+ }
+ encode_bgr_bitstream(s, width);
+ }
+ } else {
+ av_log(avctx, AV_LOG_ERROR, "Format not supported!\n");
+ }
+ emms_c();
+
+ size += (put_bits_count(&s->pb) + 31) / 8;
+ put_bits(&s->pb, 16, 0);
+ put_bits(&s->pb, 15, 0);
+ size /= 4;
+
+ if ((s->flags&CODEC_FLAG_PASS1) && (s->picture_number & 31) == 0) {
+ int j;
+ char *p = avctx->stats_out;
+ char *end = p + 1024*30;
+ for (i = 0; i < 3; i++) {
+ for (j = 0; j < 256; j++) {
+ snprintf(p, end-p, "%"PRIu64" ", s->stats[i][j]);
+ p += strlen(p);
+ s->stats[i][j]= 0;
+ }
+ snprintf(p, end-p, "\n");
+ p++;
+ }
+ } else
+ avctx->stats_out[0] = '\0';
+ if (!(s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)) {
+ flush_put_bits(&s->pb);
+ s->dsp.bswap_buf((uint32_t*)pkt->data, (uint32_t*)pkt->data, size);
+ }
+
+ s->picture_number++;
+
+ pkt->size = size * 4;
+ pkt->flags |= AV_PKT_FLAG_KEY;
+ *got_packet = 1;
+
+ return 0;
+}
+
+static av_cold int encode_end(AVCodecContext *avctx)
+{
+ HYuvContext *s = avctx->priv_data;
+
+ ff_huffyuv_common_end(s);
+
+ av_freep(&avctx->extradata);
+ av_freep(&avctx->stats_out);
+
+ return 0;
+}
+
+#if CONFIG_HUFFYUV_ENCODER
+AVCodec ff_huffyuv_encoder = {
+ .name = "huffyuv",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_HUFFYUV,
+ .priv_data_size = sizeof(HYuvContext),
+ .init = encode_init,
+ .encode2 = encode_frame,
+ .close = encode_end,
+ .pix_fmts = (const enum AVPixelFormat[]){
+ AV_PIX_FMT_YUV422P, AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE
+ },
+ .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
+};
+#endif
+
+#if CONFIG_FFVHUFF_ENCODER
+AVCodec ff_ffvhuff_encoder = {
+ .name = "ffvhuff",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_FFVHUFF,
+ .priv_data_size = sizeof(HYuvContext),
+ .init = encode_init,
+ .encode2 = encode_frame,
+ .close = encode_end,
+ .pix_fmts = (const enum AVPixelFormat[]){
+ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE
+ },
+ .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
+};
+#endif
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