FFmpeg  3.4.9
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 "avcodec.h"
30 #include "blockdsp.h"
31 #include "get_bits.h"
32 #include "internal.h"
33 #include "mpeg_er.h"
34 #include "mpegvideo.h"
35 #include "msmpeg4.h"
36 #include "msmpeg4data.h"
37 #include "profiles.h"
38 #include "vc1.h"
39 #include "vc1data.h"
40 #include "vdpau_compat.h"
41 #include "libavutil/avassert.h"
42 
43 
44 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
45 
46 typedef struct SpriteData {
47  /**
48  * Transform coefficients for both sprites in 16.16 fixed point format,
49  * in the order they appear in the bitstream:
50  * x scale
51  * rotation 1 (unused)
52  * x offset
53  * rotation 2 (unused)
54  * y scale
55  * y offset
56  * alpha
57  */
58  int coefs[2][7];
59 
60  int effect_type, effect_flag;
61  int effect_pcount1, effect_pcount2; ///< amount of effect parameters stored in effect_params
62  int effect_params1[15], effect_params2[10]; ///< effect parameters in 16.16 fixed point format
63 } SpriteData;
64 
65 static inline int get_fp_val(GetBitContext* gb)
66 {
67  return (get_bits_long(gb, 30) - (1 << 29)) << 1;
68 }
69 
70 static void vc1_sprite_parse_transform(GetBitContext* gb, int c[7])
71 {
72  c[1] = c[3] = 0;
73 
74  switch (get_bits(gb, 2)) {
75  case 0:
76  c[0] = 1 << 16;
77  c[2] = get_fp_val(gb);
78  c[4] = 1 << 16;
79  break;
80  case 1:
81  c[0] = c[4] = get_fp_val(gb);
82  c[2] = get_fp_val(gb);
83  break;
84  case 2:
85  c[0] = get_fp_val(gb);
86  c[2] = get_fp_val(gb);
87  c[4] = get_fp_val(gb);
88  break;
89  case 3:
90  c[0] = get_fp_val(gb);
91  c[1] = get_fp_val(gb);
92  c[2] = get_fp_val(gb);
93  c[3] = get_fp_val(gb);
94  c[4] = get_fp_val(gb);
95  break;
96  }
97  c[5] = get_fp_val(gb);
98  if (get_bits1(gb))
99  c[6] = get_fp_val(gb);
100  else
101  c[6] = 1 << 16;
102 }
103 
104 static int vc1_parse_sprites(VC1Context *v, GetBitContext* gb, SpriteData* sd)
105 {
106  AVCodecContext *avctx = v->s.avctx;
107  int sprite, i;
108 
109  for (sprite = 0; sprite <= v->two_sprites; sprite++) {
110  vc1_sprite_parse_transform(gb, sd->coefs[sprite]);
111  if (sd->coefs[sprite][1] || sd->coefs[sprite][3])
112  avpriv_request_sample(avctx, "Non-zero rotation coefficients");
113  av_log(avctx, AV_LOG_DEBUG, sprite ? "S2:" : "S1:");
114  for (i = 0; i < 7; i++)
115  av_log(avctx, AV_LOG_DEBUG, " %d.%.3d",
116  sd->coefs[sprite][i] / (1<<16),
117  (abs(sd->coefs[sprite][i]) & 0xFFFF) * 1000 / (1 << 16));
118  av_log(avctx, AV_LOG_DEBUG, "\n");
119  }
120 
121  skip_bits(gb, 2);
122  if (sd->effect_type = get_bits_long(gb, 30)) {
123  switch (sd->effect_pcount1 = get_bits(gb, 4)) {
124  case 7:
125  vc1_sprite_parse_transform(gb, sd->effect_params1);
126  break;
127  case 14:
128  vc1_sprite_parse_transform(gb, sd->effect_params1);
129  vc1_sprite_parse_transform(gb, sd->effect_params1 + 7);
130  break;
131  default:
132  for (i = 0; i < sd->effect_pcount1; i++)
133  sd->effect_params1[i] = get_fp_val(gb);
134  }
135  if (sd->effect_type != 13 || sd->effect_params1[0] != sd->coefs[0][6]) {
136  // effect 13 is simple alpha blending and matches the opacity above
137  av_log(avctx, AV_LOG_DEBUG, "Effect: %d; params: ", sd->effect_type);
138  for (i = 0; i < sd->effect_pcount1; i++)
139  av_log(avctx, AV_LOG_DEBUG, " %d.%.2d",
140  sd->effect_params1[i] / (1 << 16),
141  (abs(sd->effect_params1[i]) & 0xFFFF) * 1000 / (1 << 16));
142  av_log(avctx, AV_LOG_DEBUG, "\n");
143  }
144 
145  sd->effect_pcount2 = get_bits(gb, 16);
146  if (sd->effect_pcount2 > 10) {
147  av_log(avctx, AV_LOG_ERROR, "Too many effect parameters\n");
148  return AVERROR_INVALIDDATA;
149  } else if (sd->effect_pcount2) {
150  i = -1;
151  av_log(avctx, AV_LOG_DEBUG, "Effect params 2: ");
152  while (++i < sd->effect_pcount2) {
153  sd->effect_params2[i] = get_fp_val(gb);
154  av_log(avctx, AV_LOG_DEBUG, " %d.%.2d",
155  sd->effect_params2[i] / (1 << 16),
156  (abs(sd->effect_params2[i]) & 0xFFFF) * 1000 / (1 << 16));
157  }
158  av_log(avctx, AV_LOG_DEBUG, "\n");
159  }
160  }
161  if (sd->effect_flag = get_bits1(gb))
162  av_log(avctx, AV_LOG_DEBUG, "Effect flag set\n");
163 
164  if (get_bits_count(gb) >= gb->size_in_bits +
165  (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE ? 64 : 0)) {
166  av_log(avctx, AV_LOG_ERROR, "Buffer overrun\n");
167  return AVERROR_INVALIDDATA;
168  }
169  if (get_bits_count(gb) < gb->size_in_bits - 8)
170  av_log(avctx, AV_LOG_WARNING, "Buffer not fully read\n");
171 
172  return 0;
173 }
174 
175 static void vc1_draw_sprites(VC1Context *v, SpriteData* sd)
176 {
177  int i, plane, row, sprite;
178  int sr_cache[2][2] = { { -1, -1 }, { -1, -1 } };
179  uint8_t* src_h[2][2];
180  int xoff[2], xadv[2], yoff[2], yadv[2], alpha;
181  int ysub[2];
182  MpegEncContext *s = &v->s;
183 
184  for (i = 0; i <= v->two_sprites; i++) {
185  xoff[i] = av_clip(sd->coefs[i][2], 0, v->sprite_width-1 << 16);
186  xadv[i] = sd->coefs[i][0];
187  if (xadv[i] != 1<<16 || (v->sprite_width << 16) - (v->output_width << 16) - xoff[i])
188  xadv[i] = av_clip(xadv[i], 0, ((v->sprite_width<<16) - xoff[i] - 1) / v->output_width);
189 
190  yoff[i] = av_clip(sd->coefs[i][5], 0, v->sprite_height-1 << 16);
191  yadv[i] = av_clip(sd->coefs[i][4], 0, ((v->sprite_height << 16) - yoff[i]) / v->output_height);
192  }
193  alpha = av_clip_uint16(sd->coefs[1][6]);
194 
195  for (plane = 0; plane < (CONFIG_GRAY && s->avctx->flags & AV_CODEC_FLAG_GRAY ? 1 : 3); plane++) {
196  int width = v->output_width>>!!plane;
197 
198  for (row = 0; row < v->output_height>>!!plane; row++) {
199  uint8_t *dst = v->sprite_output_frame->data[plane] +
201 
202  for (sprite = 0; sprite <= v->two_sprites; sprite++) {
203  uint8_t *iplane = s->current_picture.f->data[plane];
204  int iline = s->current_picture.f->linesize[plane];
205  int ycoord = yoff[sprite] + yadv[sprite] * row;
206  int yline = ycoord >> 16;
207  int next_line;
208  ysub[sprite] = ycoord & 0xFFFF;
209  if (sprite) {
210  iplane = s->last_picture.f->data[plane];
211  iline = s->last_picture.f->linesize[plane];
212  }
213  next_line = FFMIN(yline + 1, (v->sprite_height >> !!plane) - 1) * iline;
214  if (!(xoff[sprite] & 0xFFFF) && xadv[sprite] == 1 << 16) {
215  src_h[sprite][0] = iplane + (xoff[sprite] >> 16) + yline * iline;
216  if (ysub[sprite])
217  src_h[sprite][1] = iplane + (xoff[sprite] >> 16) + next_line;
218  } else {
219  if (sr_cache[sprite][0] != yline) {
220  if (sr_cache[sprite][1] == yline) {
221  FFSWAP(uint8_t*, v->sr_rows[sprite][0], v->sr_rows[sprite][1]);
222  FFSWAP(int, sr_cache[sprite][0], sr_cache[sprite][1]);
223  } else {
224  v->vc1dsp.sprite_h(v->sr_rows[sprite][0], iplane + yline * iline, xoff[sprite], xadv[sprite], width);
225  sr_cache[sprite][0] = yline;
226  }
227  }
228  if (ysub[sprite] && sr_cache[sprite][1] != yline + 1) {
229  v->vc1dsp.sprite_h(v->sr_rows[sprite][1],
230  iplane + next_line, xoff[sprite],
231  xadv[sprite], width);
232  sr_cache[sprite][1] = yline + 1;
233  }
234  src_h[sprite][0] = v->sr_rows[sprite][0];
235  src_h[sprite][1] = v->sr_rows[sprite][1];
236  }
237  }
238 
239  if (!v->two_sprites) {
240  if (ysub[0]) {
241  v->vc1dsp.sprite_v_single(dst, src_h[0][0], src_h[0][1], ysub[0], width);
242  } else {
243  memcpy(dst, src_h[0][0], width);
244  }
245  } else {
246  if (ysub[0] && ysub[1]) {
247  v->vc1dsp.sprite_v_double_twoscale(dst, src_h[0][0], src_h[0][1], ysub[0],
248  src_h[1][0], src_h[1][1], ysub[1], alpha, width);
249  } else if (ysub[0]) {
250  v->vc1dsp.sprite_v_double_onescale(dst, src_h[0][0], src_h[0][1], ysub[0],
251  src_h[1][0], alpha, width);
252  } else if (ysub[1]) {
253  v->vc1dsp.sprite_v_double_onescale(dst, src_h[1][0], src_h[1][1], ysub[1],
254  src_h[0][0], (1<<16)-1-alpha, width);
255  } else {
256  v->vc1dsp.sprite_v_double_noscale(dst, src_h[0][0], src_h[1][0], alpha, width);
257  }
258  }
259  }
260 
261  if (!plane) {
262  for (i = 0; i <= v->two_sprites; i++) {
263  xoff[i] >>= 1;
264  yoff[i] >>= 1;
265  }
266  }
267 
268  }
269 }
270 
271 
272 static int vc1_decode_sprites(VC1Context *v, GetBitContext* gb)
273 {
274  int ret;
275  MpegEncContext *s = &v->s;
276  AVCodecContext *avctx = s->avctx;
277  SpriteData sd;
278 
279  memset(&sd, 0, sizeof(sd));
280 
281  ret = vc1_parse_sprites(v, gb, &sd);
282  if (ret < 0)
283  return ret;
284 
285  if (!s->current_picture.f || !s->current_picture.f->data[0]) {
286  av_log(avctx, AV_LOG_ERROR, "Got no sprites\n");
287  return AVERROR_UNKNOWN;
288  }
289 
290  if (v->two_sprites && (!s->last_picture_ptr || !s->last_picture.f->data[0])) {
291  av_log(avctx, AV_LOG_WARNING, "Need two sprites, only got one\n");
292  v->two_sprites = 0;
293  }
294 
296  if ((ret = ff_get_buffer(avctx, v->sprite_output_frame, 0)) < 0)
297  return ret;
298 
299  vc1_draw_sprites(v, &sd);
300 
301  return 0;
302 }
303 
304 static void vc1_sprite_flush(AVCodecContext *avctx)
305 {
306  VC1Context *v = avctx->priv_data;
307  MpegEncContext *s = &v->s;
308  AVFrame *f = s->current_picture.f;
309  int plane, i;
310 
311  /* Windows Media Image codecs have a convergence interval of two keyframes.
312  Since we can't enforce it, clear to black the missing sprite. This is
313  wrong but it looks better than doing nothing. */
314 
315  if (f && f->data[0])
316  for (plane = 0; plane < (CONFIG_GRAY && s->avctx->flags & AV_CODEC_FLAG_GRAY ? 1 : 3); plane++)
317  for (i = 0; i < v->sprite_height>>!!plane; i++)
318  memset(f->data[plane] + i * f->linesize[plane],
319  plane ? 128 : 0, f->linesize[plane]);
320 }
321 
322 #endif
323 
325 {
326  MpegEncContext *s = &v->s;
327  int i, ret = AVERROR(ENOMEM);
328  int mb_height = FFALIGN(s->mb_height, 2);
329 
330  /* Allocate mb bitplanes */
331  v->mv_type_mb_plane = av_malloc (s->mb_stride * mb_height);
332  v->direct_mb_plane = av_malloc (s->mb_stride * mb_height);
333  v->forward_mb_plane = av_malloc (s->mb_stride * mb_height);
334  v->fieldtx_plane = av_mallocz(s->mb_stride * mb_height);
335  v->acpred_plane = av_malloc (s->mb_stride * mb_height);
336  v->over_flags_plane = av_malloc (s->mb_stride * mb_height);
337  if (!v->mv_type_mb_plane || !v->direct_mb_plane || !v->forward_mb_plane ||
338  !v->fieldtx_plane || !v->acpred_plane || !v->over_flags_plane)
339  goto error;
340 
341  v->n_allocated_blks = s->mb_width + 2;
342  v->block = av_malloc(sizeof(*v->block) * v->n_allocated_blks);
343  v->cbp_base = av_malloc(sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
344  if (!v->block || !v->cbp_base)
345  goto error;
346  v->cbp = v->cbp_base + s->mb_stride;
347  v->ttblk_base = av_malloc(sizeof(v->ttblk_base[0]) * 2 * s->mb_stride);
348  if (!v->ttblk_base)
349  goto error;
350  v->ttblk = v->ttblk_base + s->mb_stride;
351  v->is_intra_base = av_mallocz(sizeof(v->is_intra_base[0]) * 2 * s->mb_stride);
352  if (!v->is_intra_base)
353  goto error;
354  v->is_intra = v->is_intra_base + s->mb_stride;
355  v->luma_mv_base = av_mallocz(sizeof(v->luma_mv_base[0]) * 2 * s->mb_stride);
356  if (!v->luma_mv_base)
357  goto error;
358  v->luma_mv = v->luma_mv_base + s->mb_stride;
359 
360  /* allocate block type info in that way so it could be used with s->block_index[] */
361  v->mb_type_base = av_malloc(s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
362  if (!v->mb_type_base)
363  goto error;
364  v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
365  v->mb_type[1] = v->mb_type_base + s->b8_stride * (mb_height * 2 + 1) + s->mb_stride + 1;
366  v->mb_type[2] = v->mb_type[1] + s->mb_stride * (mb_height + 1);
367 
368  /* allocate memory to store block level MV info */
369  v->blk_mv_type_base = av_mallocz( s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
370  if (!v->blk_mv_type_base)
371  goto error;
372  v->blk_mv_type = v->blk_mv_type_base + s->b8_stride + 1;
373  v->mv_f_base = av_mallocz(2 * (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2));
374  if (!v->mv_f_base)
375  goto error;
376  v->mv_f[0] = v->mv_f_base + s->b8_stride + 1;
377  v->mv_f[1] = v->mv_f[0] + (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
378  v->mv_f_next_base = av_mallocz(2 * (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2));
379  if (!v->mv_f_next_base)
380  goto error;
381  v->mv_f_next[0] = v->mv_f_next_base + s->b8_stride + 1;
382  v->mv_f_next[1] = v->mv_f_next[0] + (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
383 
385  for (i = 0; i < 4; i++)
386  if (!(v->sr_rows[i >> 1][i & 1] = av_malloc(v->output_width)))
387  return AVERROR(ENOMEM);
388  }
389 
390  ret = ff_intrax8_common_init(s->avctx, &v->x8, &s->idsp,
391  s->block, s->block_last_index,
392  s->mb_width, s->mb_height);
393  if (ret < 0)
394  goto error;
395 
396  return 0;
397 
398 error:
400  return ret;
401 }
402 
404 {
405  int i;
406  for (i = 0; i < 64; i++) {
407 #define transpose(x) (((x) >> 3) | (((x) & 7) << 3))
408  v->zz_8x8[0][i] = transpose(ff_wmv1_scantable[0][i]);
409  v->zz_8x8[1][i] = transpose(ff_wmv1_scantable[1][i]);
410  v->zz_8x8[2][i] = transpose(ff_wmv1_scantable[2][i]);
411  v->zz_8x8[3][i] = transpose(ff_wmv1_scantable[3][i]);
413  }
414  v->left_blk_sh = 0;
415  v->top_blk_sh = 3;
416 }
417 
418 /** Initialize a VC1/WMV3 decoder
419  * @todo TODO: Handle VC-1 IDUs (Transport level?)
420  * @todo TODO: Decipher remaining bits in extra_data
421  */
423 {
424  VC1Context *v = avctx->priv_data;
425  MpegEncContext *s = &v->s;
426  GetBitContext gb;
427  int ret;
428 
429  /* save the container output size for WMImage */
430  v->output_width = avctx->width;
431  v->output_height = avctx->height;
432 
433  if (!avctx->extradata_size || !avctx->extradata)
434  return AVERROR_INVALIDDATA;
435  v->s.avctx = avctx;
436 
437  if ((ret = ff_vc1_init_common(v)) < 0)
438  return ret;
439 
440  if (avctx->codec_id == AV_CODEC_ID_WMV3 || avctx->codec_id == AV_CODEC_ID_WMV3IMAGE) {
441  int count = 0;
442 
443  // looks like WMV3 has a sequence header stored in the extradata
444  // advanced sequence header may be before the first frame
445  // the last byte of the extradata is a version number, 1 for the
446  // samples we can decode
447 
448  init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
449 
450  if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0)
451  return ret;
452 
453  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE && !v->res_sprite) {
454  avpriv_request_sample(avctx, "Non sprite WMV3IMAGE");
455  return AVERROR_PATCHWELCOME;
456  }
457 
458  count = avctx->extradata_size*8 - get_bits_count(&gb);
459  if (count > 0) {
460  av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
461  count, get_bits_long(&gb, FFMIN(count, 32)));
462  } else if (count < 0) {
463  av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
464  }
465  } else { // VC1/WVC1/WVP2
466  const uint8_t *start = avctx->extradata;
467  uint8_t *end = avctx->extradata + avctx->extradata_size;
468  const uint8_t *next;
469  int size, buf2_size;
470  uint8_t *buf2 = NULL;
471  int seq_initialized = 0, ep_initialized = 0;
472 
473  if (avctx->extradata_size < 16) {
474  av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
475  return AVERROR_INVALIDDATA;
476  }
477 
479  if (!buf2)
480  return AVERROR(ENOMEM);
481 
482  start = find_next_marker(start, end); // in WVC1 extradata first byte is its size, but can be 0 in mkv
483  next = start;
484  for (; next < end; start = next) {
485  next = find_next_marker(start + 4, end);
486  size = next - start - 4;
487  if (size <= 0)
488  continue;
489  buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
490  init_get_bits(&gb, buf2, buf2_size * 8);
491  switch (AV_RB32(start)) {
492  case VC1_CODE_SEQHDR:
493  if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0) {
494  av_free(buf2);
495  return ret;
496  }
497  seq_initialized = 1;
498  break;
499  case VC1_CODE_ENTRYPOINT:
500  if ((ret = ff_vc1_decode_entry_point(avctx, v, &gb)) < 0) {
501  av_free(buf2);
502  return ret;
503  }
504  ep_initialized = 1;
505  break;
506  }
507  }
508  av_free(buf2);
509  if (!seq_initialized || !ep_initialized) {
510  av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
511  return AVERROR_INVALIDDATA;
512  }
513  v->res_sprite = (avctx->codec_id == AV_CODEC_ID_VC1IMAGE);
514  }
515 
516  avctx->profile = v->profile;
517  if (v->profile == PROFILE_ADVANCED)
518  avctx->level = v->level;
519 
520  if (!CONFIG_GRAY || !(avctx->flags & AV_CODEC_FLAG_GRAY))
521  avctx->pix_fmt = ff_get_format(avctx, avctx->codec->pix_fmts);
522  else {
523  avctx->pix_fmt = AV_PIX_FMT_GRAY8;
524  if (avctx->color_range == AVCOL_RANGE_UNSPECIFIED)
525  avctx->color_range = AVCOL_RANGE_MPEG;
526  }
527 
528  // ensure static VLC tables are initialized
529  if ((ret = ff_msmpeg4_decode_init(avctx)) < 0)
530  return ret;
531  if ((ret = ff_vc1_decode_init_alloc_tables(v)) < 0)
532  return ret;
533  // Hack to ensure the above functions will be called
534  // again once we know all necessary settings.
535  // That this is necessary might indicate a bug.
536  ff_vc1_decode_end(avctx);
537 
538  ff_blockdsp_init(&s->bdsp, avctx);
540  ff_qpeldsp_init(&s->qdsp);
541 
542  // Must happen after calling ff_vc1_decode_end
543  // to avoid de-allocating the sprite_output_frame
545  if (!v->sprite_output_frame)
546  return AVERROR(ENOMEM);
547 
548  avctx->has_b_frames = !!avctx->max_b_frames;
549 
550  if (v->color_prim == 1 || v->color_prim == 5 || v->color_prim == 6)
551  avctx->color_primaries = v->color_prim;
552  if (v->transfer_char == 1 || v->transfer_char == 7)
553  avctx->color_trc = v->transfer_char;
554  if (v->matrix_coef == 1 || v->matrix_coef == 6 || v->matrix_coef == 7)
555  avctx->colorspace = v->matrix_coef;
556 
557  s->mb_width = (avctx->coded_width + 15) >> 4;
558  s->mb_height = (avctx->coded_height + 15) >> 4;
559 
560  if (v->profile == PROFILE_ADVANCED || v->res_fasttx) {
562  } else {
563  memcpy(v->zz_8x8, ff_wmv1_scantable, 4*64);
564  v->left_blk_sh = 3;
565  v->top_blk_sh = 0;
566  }
567 
568  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
569  v->sprite_width = avctx->coded_width;
570  v->sprite_height = avctx->coded_height;
571 
572  avctx->coded_width = avctx->width = v->output_width;
573  avctx->coded_height = avctx->height = v->output_height;
574 
575  // prevent 16.16 overflows
576  if (v->sprite_width > 1 << 14 ||
577  v->sprite_height > 1 << 14 ||
578  v->output_width > 1 << 14 ||
579  v->output_height > 1 << 14) {
580  ret = AVERROR_INVALIDDATA;
581  goto error;
582  }
583 
584  if ((v->sprite_width&1) || (v->sprite_height&1)) {
585  avpriv_request_sample(avctx, "odd sprites support");
586  ret = AVERROR_PATCHWELCOME;
587  goto error;
588  }
589  }
590  return 0;
591 error:
593  return ret;
594 }
595 
596 /** Close a VC1/WMV3 decoder
597  * @warning Initial try at using MpegEncContext stuff
598  */
600 {
601  VC1Context *v = avctx->priv_data;
602  int i;
603 
605 
606  for (i = 0; i < 4; i++)
607  av_freep(&v->sr_rows[i >> 1][i & 1]);
608  av_freep(&v->hrd_rate);
609  av_freep(&v->hrd_buffer);
610  ff_mpv_common_end(&v->s);
614  av_freep(&v->fieldtx_plane);
615  av_freep(&v->acpred_plane);
617  av_freep(&v->mb_type_base);
619  av_freep(&v->mv_f_base);
621  av_freep(&v->block);
622  av_freep(&v->cbp_base);
623  av_freep(&v->ttblk_base);
624  av_freep(&v->is_intra_base); // FIXME use v->mb_type[]
625  av_freep(&v->luma_mv_base);
627  return 0;
628 }
629 
630 
631 /** Decode a VC1/WMV3 frame
632  * @todo TODO: Handle VC-1 IDUs (Transport level?)
633  */
634 static int vc1_decode_frame(AVCodecContext *avctx, void *data,
635  int *got_frame, AVPacket *avpkt)
636 {
637  const uint8_t *buf = avpkt->data;
638  int buf_size = avpkt->size, n_slices = 0, i, ret;
639  VC1Context *v = avctx->priv_data;
640  MpegEncContext *s = &v->s;
641  AVFrame *pict = data;
642  uint8_t *buf2 = NULL;
643  const uint8_t *buf_start = buf, *buf_start_second_field = NULL;
644  int mb_height, n_slices1=-1;
645  struct {
646  uint8_t *buf;
647  GetBitContext gb;
648  int mby_start;
649  const uint8_t *rawbuf;
650  int raw_size;
651  } *slices = NULL, *tmp;
652 
653  v->second_field = 0;
654 
656  s->low_delay = 1;
657 
658  /* no supplementary picture */
659  if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == VC1_CODE_ENDOFSEQ)) {
660  /* special case for last picture */
661  if (s->low_delay == 0 && s->next_picture_ptr) {
662  if ((ret = av_frame_ref(pict, s->next_picture_ptr->f)) < 0)
663  return ret;
664  s->next_picture_ptr = NULL;
665 
666  *got_frame = 1;
667  }
668 
669  return buf_size;
670  }
671 
672 #if FF_API_CAP_VDPAU
674  if (v->profile < PROFILE_ADVANCED)
676  else
677  avctx->pix_fmt = AV_PIX_FMT_VDPAU_VC1;
678  }
679 #endif
680 
681  //for advanced profile we may need to parse and unescape data
682  if (avctx->codec_id == AV_CODEC_ID_VC1 || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
683  int buf_size2 = 0;
684  buf2 = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
685  if (!buf2)
686  return AVERROR(ENOMEM);
687 
688  if (IS_MARKER(AV_RB32(buf))) { /* frame starts with marker and needs to be parsed */
689  const uint8_t *start, *end, *next;
690  int size;
691 
692  next = buf;
693  for (start = buf, end = buf + buf_size; next < end; start = next) {
694  next = find_next_marker(start + 4, end);
695  size = next - start - 4;
696  if (size <= 0) continue;
697  switch (AV_RB32(start)) {
698  case VC1_CODE_FRAME:
699  if (avctx->hwaccel
702 #endif
703  )
704  buf_start = start;
705  buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
706  break;
707  case VC1_CODE_FIELD: {
708  int buf_size3;
709  if (avctx->hwaccel
712 #endif
713  )
714  buf_start_second_field = start;
715  tmp = av_realloc_array(slices, sizeof(*slices), (n_slices+1));
716  if (!tmp) {
717  ret = AVERROR(ENOMEM);
718  goto err;
719  }
720  slices = tmp;
721  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
722  if (!slices[n_slices].buf) {
723  ret = AVERROR(ENOMEM);
724  goto err;
725  }
726  buf_size3 = vc1_unescape_buffer(start + 4, size,
727  slices[n_slices].buf);
728  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
729  buf_size3 << 3);
730  /* assuming that the field marker is at the exact middle,
731  hope it's correct */
732  slices[n_slices].mby_start = s->mb_height + 1 >> 1;
733  slices[n_slices].rawbuf = start;
734  slices[n_slices].raw_size = size + 4;
735  n_slices1 = n_slices - 1; // index of the last slice of the first field
736  n_slices++;
737  break;
738  }
739  case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
740  buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
741  init_get_bits(&s->gb, buf2, buf_size2 * 8);
742  ff_vc1_decode_entry_point(avctx, v, &s->gb);
743  break;
744  case VC1_CODE_SLICE: {
745  int buf_size3;
746  tmp = av_realloc_array(slices, sizeof(*slices), (n_slices+1));
747  if (!tmp) {
748  ret = AVERROR(ENOMEM);
749  goto err;
750  }
751  slices = tmp;
752  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
753  if (!slices[n_slices].buf) {
754  ret = AVERROR(ENOMEM);
755  goto err;
756  }
757  buf_size3 = vc1_unescape_buffer(start + 4, size,
758  slices[n_slices].buf);
759  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
760  buf_size3 << 3);
761  slices[n_slices].mby_start = get_bits(&slices[n_slices].gb, 9);
762  slices[n_slices].rawbuf = start;
763  slices[n_slices].raw_size = size + 4;
764  n_slices++;
765  break;
766  }
767  }
768  }
769  } else if (v->interlace && ((buf[0] & 0xC0) == 0xC0)) { /* WVC1 interlaced stores both fields divided by marker */
770  const uint8_t *divider;
771  int buf_size3;
772 
773  divider = find_next_marker(buf, buf + buf_size);
774  if ((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD) {
775  av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
776  ret = AVERROR_INVALIDDATA;
777  goto err;
778  } else { // found field marker, unescape second field
779  if (avctx->hwaccel
782 #endif
783  )
784  buf_start_second_field = divider;
785  tmp = av_realloc_array(slices, sizeof(*slices), (n_slices+1));
786  if (!tmp) {
787  ret = AVERROR(ENOMEM);
788  goto err;
789  }
790  slices = tmp;
791  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
792  if (!slices[n_slices].buf) {
793  ret = AVERROR(ENOMEM);
794  goto err;
795  }
796  buf_size3 = vc1_unescape_buffer(divider + 4, buf + buf_size - divider - 4, slices[n_slices].buf);
797  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
798  buf_size3 << 3);
799  slices[n_slices].mby_start = s->mb_height + 1 >> 1;
800  slices[n_slices].rawbuf = divider;
801  slices[n_slices].raw_size = buf + buf_size - divider;
802  n_slices1 = n_slices - 1;
803  n_slices++;
804  }
805  buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
806  } else {
807  buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
808  }
809  init_get_bits(&s->gb, buf2, buf_size2*8);
810  } else
811  init_get_bits(&s->gb, buf, buf_size*8);
812 
813  if (v->res_sprite) {
814  v->new_sprite = !get_bits1(&s->gb);
815  v->two_sprites = get_bits1(&s->gb);
816  /* res_sprite means a Windows Media Image stream, AV_CODEC_ID_*IMAGE means
817  we're using the sprite compositor. These are intentionally kept separate
818  so you can get the raw sprites by using the wmv3 decoder for WMVP or
819  the vc1 one for WVP2 */
820  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
821  if (v->new_sprite) {
822  // switch AVCodecContext parameters to those of the sprites
823  avctx->width = avctx->coded_width = v->sprite_width;
824  avctx->height = avctx->coded_height = v->sprite_height;
825  } else {
826  goto image;
827  }
828  }
829  }
830 
831  if (s->context_initialized &&
832  (s->width != avctx->coded_width ||
833  s->height != avctx->coded_height)) {
834  ff_vc1_decode_end(avctx);
835  }
836 
837  if (!s->context_initialized) {
838  if ((ret = ff_msmpeg4_decode_init(avctx)) < 0)
839  goto err;
840  if ((ret = ff_vc1_decode_init_alloc_tables(v)) < 0) {
842  goto err;
843  }
844 
845  s->low_delay = !avctx->has_b_frames || v->res_sprite;
846 
847  if (v->profile == PROFILE_ADVANCED) {
848  if(avctx->coded_width<=1 || avctx->coded_height<=1) {
849  ret = AVERROR_INVALIDDATA;
850  goto err;
851  }
852  s->h_edge_pos = avctx->coded_width;
853  s->v_edge_pos = avctx->coded_height;
854  }
855  }
856 
857  // do parse frame header
858  v->pic_header_flag = 0;
859  v->first_pic_header_flag = 1;
860  if (v->profile < PROFILE_ADVANCED) {
861  if ((ret = ff_vc1_parse_frame_header(v, &s->gb)) < 0) {
862  goto err;
863  }
864  } else {
865  if ((ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
866  goto err;
867  }
868  }
869  v->first_pic_header_flag = 0;
870 
871  if (avctx->debug & FF_DEBUG_PICT_INFO)
872  av_log(v->s.avctx, AV_LOG_DEBUG, "pict_type: %c\n", av_get_picture_type_char(s->pict_type));
873 
874  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
875  && s->pict_type != AV_PICTURE_TYPE_I) {
876  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected I-frame\n");
877  ret = AVERROR_INVALIDDATA;
878  goto err;
879  }
880  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
881  && v->field_mode) {
882  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected Frames not Fields\n");
883  ret = AVERROR_INVALIDDATA;
884  goto err;
885  }
886  if ((s->mb_height >> v->field_mode) == 0) {
887  av_log(v->s.avctx, AV_LOG_ERROR, "image too short\n");
888  ret = AVERROR_INVALIDDATA;
889  goto err;
890  }
891 
892  // for skipping the frame
895 
896  /* skip B-frames if we don't have reference frames */
897  if (!s->last_picture_ptr && (s->pict_type == AV_PICTURE_TYPE_B || s->droppable)) {
898  av_log(v->s.avctx, AV_LOG_DEBUG, "Skipping B frame without reference frames\n");
899  goto end;
900  }
901  if ((avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B) ||
903  avctx->skip_frame >= AVDISCARD_ALL) {
904  goto end;
905  }
906 
907  if (s->next_p_frame_damaged) {
908  if (s->pict_type == AV_PICTURE_TYPE_B)
909  goto end;
910  else
911  s->next_p_frame_damaged = 0;
912  }
913 
914  if ((ret = ff_mpv_frame_start(s, avctx)) < 0) {
915  goto err;
916  }
917 
921 
922  // process pulldown flags
924  // Pulldown flags are only valid when 'broadcast' has been set.
925  // So ticks_per_frame will be 2
926  if (v->rff) {
927  // repeat field
929  } else if (v->rptfrm) {
930  // repeat frames
931  s->current_picture_ptr->f->repeat_pict = v->rptfrm * 2;
932  }
933 
936 
937 #if FF_API_CAP_VDPAU
940  if (v->field_mode && buf_start_second_field) {
941  ff_vdpau_vc1_decode_picture(s, buf_start, buf_start_second_field - buf_start);
942  ff_vdpau_vc1_decode_picture(s, buf_start_second_field, (buf + buf_size) - buf_start_second_field);
943  } else {
944  ff_vdpau_vc1_decode_picture(s, buf_start, (buf + buf_size) - buf_start);
945  }
946  } else
947 #endif
948  if (avctx->hwaccel) {
949  s->mb_y = 0;
950  if (v->field_mode && buf_start_second_field) {
951  // decode first field
953  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start, buf_start_second_field - buf_start)) < 0)
954  goto err;
955  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, buf_start_second_field - buf_start)) < 0)
956  goto err;
957  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
958  goto err;
959 
960  // decode second field
961  s->gb = slices[n_slices1 + 1].gb;
963  v->second_field = 1;
964  v->pic_header_flag = 0;
965  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
966  av_log(avctx, AV_LOG_ERROR, "parsing header for second field failed");
967  ret = AVERROR_INVALIDDATA;
968  goto err;
969  }
971 
972  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start_second_field, (buf + buf_size) - buf_start_second_field)) < 0)
973  goto err;
974  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start_second_field, (buf + buf_size) - buf_start_second_field)) < 0)
975  goto err;
976  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
977  goto err;
978  } else {
980  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start, (buf + buf_size) - buf_start)) < 0)
981  goto err;
982 
983  if (n_slices == 0) {
984  // no slices, decode the frame as-is
985  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, (buf + buf_size) - buf_start)) < 0)
986  goto err;
987  } else {
988  // decode the frame part as the first slice
989  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, slices[0].rawbuf - buf_start)) < 0)
990  goto err;
991 
992  // and process the slices as additional slices afterwards
993  for (i = 0 ; i < n_slices; i++) {
994  s->gb = slices[i].gb;
995  s->mb_y = slices[i].mby_start;
996 
997  v->pic_header_flag = get_bits1(&s->gb);
998  if (v->pic_header_flag) {
999  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1000  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1001  ret = AVERROR_INVALIDDATA;
1002  if (avctx->err_recognition & AV_EF_EXPLODE)
1003  goto err;
1004  continue;
1005  }
1006  }
1007 
1008  if ((ret = avctx->hwaccel->decode_slice(avctx, slices[i].rawbuf, slices[i].raw_size)) < 0)
1009  goto err;
1010  }
1011  }
1012  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
1013  goto err;
1014  }
1015  } else {
1016  int header_ret = 0;
1017 
1019 
1020  v->bits = FFMIN(buf_size * 8, s->gb.size_in_bits);
1021  v->end_mb_x = s->mb_width;
1022  if (v->field_mode) {
1023  s->current_picture.f->linesize[0] <<= 1;
1024  s->current_picture.f->linesize[1] <<= 1;
1025  s->current_picture.f->linesize[2] <<= 1;
1026  s->linesize <<= 1;
1027  s->uvlinesize <<= 1;
1028  }
1029  mb_height = s->mb_height >> v->field_mode;
1030 
1031  av_assert0 (mb_height > 0);
1032 
1033  for (i = 0; i <= n_slices; i++) {
1034  if (i > 0 && slices[i - 1].mby_start >= mb_height) {
1035  if (v->field_mode <= 0) {
1036  av_log(v->s.avctx, AV_LOG_ERROR, "Slice %d starts beyond "
1037  "picture boundary (%d >= %d)\n", i,
1038  slices[i - 1].mby_start, mb_height);
1039  continue;
1040  }
1041  v->second_field = 1;
1042  av_assert0((s->mb_height & 1) == 0);
1043  v->blocks_off = s->b8_stride * (s->mb_height&~1);
1044  v->mb_off = s->mb_stride * s->mb_height >> 1;
1045  } else {
1046  v->second_field = 0;
1047  v->blocks_off = 0;
1048  v->mb_off = 0;
1049  }
1050  if (i) {
1051  v->pic_header_flag = 0;
1052  if (v->field_mode && i == n_slices1 + 2) {
1053  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1054  av_log(v->s.avctx, AV_LOG_ERROR, "Field header damaged\n");
1055  ret = AVERROR_INVALIDDATA;
1056  if (avctx->err_recognition & AV_EF_EXPLODE)
1057  goto err;
1058  continue;
1059  }
1060  } else if (get_bits1(&s->gb)) {
1061  v->pic_header_flag = 1;
1062  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1063  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1064  ret = AVERROR_INVALIDDATA;
1065  if (avctx->err_recognition & AV_EF_EXPLODE)
1066  goto err;
1067  continue;
1068  }
1069  }
1070  }
1071  if (header_ret < 0)
1072  continue;
1073  s->start_mb_y = (i == 0) ? 0 : FFMAX(0, slices[i-1].mby_start % mb_height);
1074  if (!v->field_mode || v->second_field)
1075  s->end_mb_y = (i == n_slices ) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1076  else {
1077  if (i >= n_slices) {
1078  av_log(v->s.avctx, AV_LOG_ERROR, "first field slice count too large\n");
1079  continue;
1080  }
1081  s->end_mb_y = (i <= n_slices1 + 1) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1082  }
1083  if (s->end_mb_y <= s->start_mb_y) {
1084  av_log(v->s.avctx, AV_LOG_ERROR, "end mb y %d %d invalid\n", s->end_mb_y, s->start_mb_y);
1085  continue;
1086  }
1087  if (!v->p_frame_skipped && s->pict_type != AV_PICTURE_TYPE_I && !v->cbpcy_vlc) {
1088  av_log(v->s.avctx, AV_LOG_ERROR, "missing cbpcy_vlc\n");
1089  continue;
1090  }
1092  if (i != n_slices) {
1093  s->gb = slices[i].gb;
1094  v->bits = FFMIN(buf_size * 8, s->gb.size_in_bits);
1095  }
1096  }
1097  if (v->field_mode) {
1098  v->second_field = 0;
1099  s->current_picture.f->linesize[0] >>= 1;
1100  s->current_picture.f->linesize[1] >>= 1;
1101  s->current_picture.f->linesize[2] >>= 1;
1102  s->linesize >>= 1;
1103  s->uvlinesize >>= 1;
1105  FFSWAP(uint8_t *, v->mv_f_next[0], v->mv_f[0]);
1106  FFSWAP(uint8_t *, v->mv_f_next[1], v->mv_f[1]);
1107  }
1108  }
1109  ff_dlog(s->avctx, "Consumed %i/%i bits\n",
1110  get_bits_count(&s->gb), s->gb.size_in_bits);
1111 // if (get_bits_count(&s->gb) > buf_size * 8)
1112 // return -1;
1113  if(s->er.error_occurred && s->pict_type == AV_PICTURE_TYPE_B) {
1114  ret = AVERROR_INVALIDDATA;
1115  goto err;
1116  }
1117  if ( !v->field_mode
1118  && avctx->codec_id != AV_CODEC_ID_WMV3IMAGE
1119  && avctx->codec_id != AV_CODEC_ID_VC1IMAGE)
1120  ff_er_frame_end(&s->er);
1121  }
1122 
1123  ff_mpv_frame_end(s);
1124 
1125  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
1126 image:
1127  avctx->width = avctx->coded_width = v->output_width;
1128  avctx->height = avctx->coded_height = v->output_height;
1129  if (avctx->skip_frame >= AVDISCARD_NONREF)
1130  goto end;
1131 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
1132  if ((ret = vc1_decode_sprites(v, &s->gb)) < 0)
1133  goto err;
1134 #endif
1135  if ((ret = av_frame_ref(pict, v->sprite_output_frame)) < 0)
1136  goto err;
1137  *got_frame = 1;
1138  } else {
1139  if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
1140  if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
1141  goto err;
1142  if (!v->field_mode)
1144  *got_frame = 1;
1145  } else if (s->last_picture_ptr) {
1146  if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
1147  goto err;
1148  if (!v->field_mode)
1150  *got_frame = 1;
1151  }
1152  }
1153 
1154 end:
1155  av_free(buf2);
1156  for (i = 0; i < n_slices; i++)
1157  av_free(slices[i].buf);
1158  av_free(slices);
1159  return buf_size;
1160 
1161 err:
1162  av_free(buf2);
1163  for (i = 0; i < n_slices; i++)
1164  av_free(slices[i].buf);
1165  av_free(slices);
1166  return ret;
1167 }
1168 
1169 
1171 #if CONFIG_VC1_DXVA2_HWACCEL
1173 #endif
1174 #if CONFIG_VC1_D3D11VA_HWACCEL
1177 #endif
1178 #if CONFIG_VC1_VAAPI_HWACCEL
1180 #endif
1181 #if CONFIG_VC1_VDPAU_HWACCEL
1183 #endif
1186 };
1187 
1189  .name = "vc1",
1190  .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"),
1191  .type = AVMEDIA_TYPE_VIDEO,
1192  .id = AV_CODEC_ID_VC1,
1193  .priv_data_size = sizeof(VC1Context),
1194  .init = vc1_decode_init,
1195  .close = ff_vc1_decode_end,
1197  .flush = ff_mpeg_flush,
1198  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1199  .pix_fmts = vc1_hwaccel_pixfmt_list_420,
1201 };
1202 
1203 #if CONFIG_WMV3_DECODER
1204 AVCodec ff_wmv3_decoder = {
1205  .name = "wmv3",
1206  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9"),
1207  .type = AVMEDIA_TYPE_VIDEO,
1208  .id = AV_CODEC_ID_WMV3,
1209  .priv_data_size = sizeof(VC1Context),
1210  .init = vc1_decode_init,
1211  .close = ff_vc1_decode_end,
1213  .flush = ff_mpeg_flush,
1214  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1215  .pix_fmts = vc1_hwaccel_pixfmt_list_420,
1217 };
1218 #endif
1219 
1220 #if CONFIG_WMV3_VDPAU_DECODER && FF_API_VDPAU
1221 AVCodec ff_wmv3_vdpau_decoder = {
1222  .name = "wmv3_vdpau",
1223  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 VDPAU"),
1224  .type = AVMEDIA_TYPE_VIDEO,
1225  .id = AV_CODEC_ID_WMV3,
1226  .priv_data_size = sizeof(VC1Context),
1227  .init = vc1_decode_init,
1228  .close = ff_vc1_decode_end,
1231  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_VDPAU_WMV3, AV_PIX_FMT_NONE },
1233 };
1234 #endif
1235 
1236 #if CONFIG_VC1_VDPAU_DECODER && FF_API_VDPAU
1237 AVCodec ff_vc1_vdpau_decoder = {
1238  .name = "vc1_vdpau",
1239  .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1 VDPAU"),
1240  .type = AVMEDIA_TYPE_VIDEO,
1241  .id = AV_CODEC_ID_VC1,
1242  .priv_data_size = sizeof(VC1Context),
1243  .init = vc1_decode_init,
1244  .close = ff_vc1_decode_end,
1247  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_VDPAU_VC1, AV_PIX_FMT_NONE },
1249 };
1250 #endif
1251 
1252 #if CONFIG_WMV3IMAGE_DECODER
1253 AVCodec ff_wmv3image_decoder = {
1254  .name = "wmv3image",
1255  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 Image"),
1256  .type = AVMEDIA_TYPE_VIDEO,
1257  .id = AV_CODEC_ID_WMV3IMAGE,
1258  .priv_data_size = sizeof(VC1Context),
1259  .init = vc1_decode_init,
1260  .close = ff_vc1_decode_end,
1262  .capabilities = AV_CODEC_CAP_DR1,
1263  .flush = vc1_sprite_flush,
1264  .pix_fmts = (const enum AVPixelFormat[]) {
1266  AV_PIX_FMT_NONE
1267  },
1268 };
1269 #endif
1270 
1271 #if CONFIG_VC1IMAGE_DECODER
1272 AVCodec ff_vc1image_decoder = {
1273  .name = "vc1image",
1274  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 Image v2"),
1275  .type = AVMEDIA_TYPE_VIDEO,
1276  .id = AV_CODEC_ID_VC1IMAGE,
1277  .priv_data_size = sizeof(VC1Context),
1278  .init = vc1_decode_init,
1279  .close = ff_vc1_decode_end,
1281  .capabilities = AV_CODEC_CAP_DR1,
1282  .flush = vc1_sprite_flush,
1283  .pix_fmts = (const enum AVPixelFormat[]) {
1285  AV_PIX_FMT_NONE
1286  },
1287 };
1288 #endif
int color_prim
8 bits, chroma coordinates of the color primaries
Definition: vc1.h:206
in the bitstream is reported as 00b
Definition: vc1.h:149
int plane
Definition: avisynth_c.h:422
IDCTDSPContext idsp
Definition: mpegvideo.h:227
#define NULL
Definition: coverity.c:32
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
Definition: decode.c:1184
const struct AVCodec * codec
Definition: avcodec.h:1770
discard all frames except keyframes
Definition: avcodec.h:829
BI type.
Definition: avutil.h:280
qpel_mc_func avg_qpel_pixels_tab[2][16]
Definition: qpeldsp.h:74
int p_frame_skipped
Definition: vc1.h:380
const char * s
Definition: avisynth_c.h:768
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
The VC1 Context.
Definition: vc1.h:173
int size
static float alpha(float a)
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
int start_mb_y
start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
Definition: mpegvideo.h:150
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
static void flush(AVCodecContext *avctx)
uint8_t * mv_f_base
Definition: vc1.h:350
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1963
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:262
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
int ff_msmpeg4_decode_init(AVCodecContext *avctx)
Definition: msmpeg4dec.c:298
int end_mb_y
end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
Definition: mpegvideo.h:151
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
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:2047
av_cold int ff_vc1_decode_end(AVCodecContext *avctx)
Close a VC1/WMV3 decoder.
Definition: vc1dec.c:599
#define avpriv_request_sample(...)
int v_edge_pos
horizontal / vertical position of the right/bottom edge (pixel replication)
Definition: mpegvideo.h:129
void ff_er_frame_end(ERContext *s)
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:2498
int repeat_pict
When decoding, this signals how much the picture must be delayed.
Definition: frame.h:343
int size
Definition: avcodec.h:1680
int transfer_char
8 bits, Opto-electronic transfer characteristics
Definition: vc1.h:207
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:60
void(* sprite_v_single)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset, int width)
Definition: vc1dsp.h:68
int field_picture
whether or not the picture was encoded in separate fields
Definition: mpegpicture.h:79
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1989
static enum AVPixelFormat vc1_hwaccel_pixfmt_list_420[]
Definition: vc1dec.c:1170
uint8_t zz_8x8[4][64]
Zigzag table for TT_8x8, permuted for IDCT.
Definition: vc1.h:239
av_cold void ff_h264chroma_init(H264ChromaContext *c, int bit_depth)
Definition: h264chroma.c:41
mpegvideo header.
IntraX8Context x8
Definition: vc1.h:175
uint8_t * mb_type_base
Definition: vc1.h:264
discard all
Definition: avcodec.h:830
uint8_t * mv_f[2]
0: MV obtained from same field, 1: opposite field
Definition: vc1.h:350
int sprite_height
Definition: vc1.h:376
int end_mb_x
Horizontal macroblock limit (used only by mss2)
Definition: vc1.h:393
int profile
profile
Definition: avcodec.h:3266
QpelDSPContext qdsp
Definition: mpegvideo.h:232
AVCodec.
Definition: avcodec.h:3739
av_cold int ff_intrax8_common_init(AVCodecContext *avctx, IntraX8Context *w, IDCTDSPContext *idsp, int16_t(*block)[64], int block_last_index[12], int mb_width, int mb_height)
Initialize IntraX8 frame decoder.
Definition: intrax8.c:728
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
uint8_t rff
Definition: vc1.h:311
enum AVDiscard skip_frame
Skip decoding for selected frames.
Definition: avcodec.h:3386
int bits
Definition: vc1.h:179
struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:3082
#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: avcodec.h:1027
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
uint8_t * acpred_plane
AC prediction flags bitplane.
Definition: vc1.h:321
VC-1 tables.
int matrix_coef
8 bits, Color primaries->YCbCr transform matrix
Definition: vc1.h:208
uint8_t
#define av_cold
Definition: attributes.h:82
#define av_malloc(s)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:150
int first_pic_header_flag
Definition: vc1.h:368
uint16_t * hrd_rate
Definition: vc1.h:326
av_cold int ff_vc1_init_common(VC1Context *v)
Init VC-1 specific tables and VC1Context members.
Definition: vc1.c:1587
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:3004
#define AV_RB32
Definition: intreadwrite.h:130
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
int interlace
Progressive/interlaced (RPTFTM syntax element)
Definition: vc1.h:201
int second_field
Definition: vc1.h:354
int n_allocated_blks
Definition: vc1.h:385
qpel_mc_func(* qpel_put)[16]
Definition: motion_est.h:91
#define AV_CODEC_FLAG_LOW_DELAY
Force low delay.
Definition: avcodec.h:921
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:395
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1876
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:177
int16_t((* luma_mv)[2]
Definition: vc1.h:388
#define FF_API_CAP_VDPAU
Definition: version.h:70
int profile
Sequence header data for all Profiles TODO: choose between ints, uint8_ts and monobit flags...
Definition: vc1.h:218
const char data[16]
Definition: mxf.c:90
#define PICT_BOTTOM_FIELD
Definition: mpegutils.h:38
MSMPEG4 data tables.
uint8_t * data
Definition: avcodec.h:1679
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:200
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:91
#define AV_CODEC_CAP_HWACCEL_VDPAU
Codec can export data for HW decoding (VDPAU).
Definition: avcodec.h:1038
#define ff_dlog(a,...)
bitstream reader API header.
uint8_t * forward_mb_plane
bitplane for "forward" MBs
Definition: vc1.h:288
WMV3 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstrea...
Definition: pixfmt.h:111
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:348
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:126
static av_cold int vc1_decode_init(AVCodecContext *avctx)
Initialize a VC1/WMV3 decoder.
Definition: vc1dec.c:422
int ff_vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
Decode Simple/Main Profiles sequence header.
Definition: vc1.c:276
uint8_t * over_flags_plane
Overflags bitplane.
Definition: vc1.h:323
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:904
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Allocate, reallocate, or free an array.
Definition: mem.c:184
#define FFALIGN(x, a)
Definition: macros.h:48
#define av_log(a,...)
int16_t(* block)[6][64]
Definition: vc1.h:384
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:2083
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:163
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:181
ERContext er
Definition: mpegvideo.h:551
int capabilities
Codec capabilities.
Definition: avcodec.h:3758
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
#define IS_MARKER(state)
Definition: dca_parser.c:51
uint8_t * mv_f_next_base
Definition: vc1.h:351
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1856
uint16_t width
Definition: gdv.c:47
simple assert() macros that are a bit more flexible than ISO C assert().
void ff_vc1_decode_blocks(VC1Context *v)
Definition: vc1_block.c:2949
#define PICT_TOP_FIELD
Definition: mpegutils.h:37
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:222
const char * name
Name of the codec implementation.
Definition: avcodec.h:3746
int low_delay
no reordering needed / has no B-frames
Definition: mpegvideo.h:404
qpel_mc_func put_qpel_pixels_tab[2][16]
Definition: qpeldsp.h:73
GetBitContext gb
Definition: mpegvideo.h:446
void ff_mpv_common_end(MpegEncContext *s)
Definition: mpegvideo.c:1122
#define FFMAX(a, b)
Definition: common.h:94
uint8_t * blk_mv_type
0: frame MV, 1: field MV (interlaced frame)
Definition: vc1.h:349
void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo.c:2778
int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:853
const uint8_t ff_vc1_adv_interlaced_8x8_zz[64]
Definition: vc1data.c:1047
const uint8_t ff_wmv1_scantable[WMV1_SCANTABLE_COUNT][64]
Definition: msmpeg4data.c:1809
enum AVPixelFormat * pix_fmts
array of supported pixel formats, or NULL if unknown, array is terminated by -1
Definition: avcodec.h:3760
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:284
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:3050
#define FFMIN(a, b)
Definition: common.h:96
int next_p_frame_damaged
set if the next p frame is damaged, to avoid showing trashed B-frames
Definition: mpegvideo.h:360
uint8_t * blk_mv_type_base
Definition: vc1.h:349
int field_mode
1 for interlaced field pictures
Definition: vc1.h:352
av_cold void ff_intrax8_common_end(IntraX8Context *w)
Destroy IntraX8 frame structure.
Definition: intrax8.c:768
int width
picture width / height.
Definition: avcodec.h:1948
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:181
int mb_off
Definition: vc1.h:364
void ff_mpeg_er_frame_start(MpegEncContext *s)
Definition: mpeg_er.c:46
int size_in_bits
Definition: get_bits.h:59
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:2477
int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:631
int level
level
Definition: avcodec.h:3364
#define CONFIG_GRAY
Definition: config.h:528
int block_last_index[12]
last non zero coefficient in block
Definition: mpegvideo.h:83
MotionEstContext me
Definition: mpegvideo.h:282
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:3061
uint32_t * cbp
Definition: vc1.h:386
static void error(const char *err)
int left_blk_sh
Definition: vc1.h:240
int16_t(* luma_mv_base)[2]
Definition: vc1.h:388
uint8_t * fieldtx_plane
Definition: vc1.h:346
int * ttblk_base
Definition: vc1.h:259
VLC * cbpcy_vlc
CBPCY VLC table.
Definition: vc1.h:284
uint8_t * sr_rows[2][2]
Sprite resizer line cache.
Definition: vc1.h:377
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
av_cold void ff_vc1_init_transposed_scantables(VC1Context *v)
Definition: vc1dec.c:403
int res_sprite
Simple/Main Profile sequence header.
Definition: vc1.h:183
int top_blk_sh
Either 3 or 0, positions of l/t in blk[].
Definition: vc1.h:240
Libavcodec external API header.
void(* sprite_v_double_noscale)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src2a, int alpha, int width)
Definition: vc1dsp.h:69
static av_always_inline int vc1_unescape_buffer(const uint8_t *src, int size, uint8_t *dst)
Definition: vc1_common.h:70
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:131
int(* end_frame)(AVCodecContext *avctx)
Called at the end of each frame or field picture.
Definition: avcodec.h:3955
enum AVCodecID codec_id
Definition: avcodec.h:1778
BlockDSPContext bdsp
Definition: mpegvideo.h:223
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:232
int debug
debug
Definition: avcodec.h:3003
uint32_t * cbp_base
Definition: vc1.h:386
main external API structure.
Definition: avcodec.h:1761
uint8_t * is_intra
Definition: vc1.h:387
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:97
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1669
void * buf
Definition: avisynth_c.h:690
void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
Definition: mpegvideo.c:1966
int extradata_size
Definition: avcodec.h:1877
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:314
int sprite_width
Definition: vc1.h:376
uint8_t * is_intra_base
Definition: vc1.h:387
int coded_height
Definition: avcodec.h:1963
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:307
static const AVProfile profiles[]
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:2491
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:2484
struct AVFrame * f
Definition: mpegpicture.h:46
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
HW acceleration through VDPAU, Picture.data[3] contains a VdpVideoSurface.
Definition: pixfmt.h:213
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:426
int context_initialized
Definition: mpegvideo.h:121
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:132
int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
generic function called after decoding the header and before a frame is decoded.
Definition: mpegvideo.c:1196
#define CONFIG_VC1_VDPAU_DECODER
Definition: config.h:906
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:347
av_cold int ff_vc1_decode_init_alloc_tables(VC1Context *v)
Definition: vc1dec.c:324
uint8_t * direct_mb_plane
bitplane for "direct" MBs
Definition: vc1.h:287
HW decoding through DXVA2, Picture.data[3] contains a LPDIRECT3DSURFACE9 pointer. ...
Definition: pixfmt.h:152
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:209
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
AVCodec ff_vc1_decoder
Definition: vc1dec.c:1188
uint8_t * mv_type_mb_plane
bitplane for mv_type == (4MV)
Definition: vc1.h:286
int blocks_off
Definition: vc1.h:364
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:505
int(* decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size)
Callback for each slice.
Definition: avcodec.h:3944
uint8_t tff
Definition: vc1.h:311
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:215
qpel_mc_func(* qpel_avg)[16]
Definition: motion_est.h:92
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Definition: mpegvideo.h:128
Hardware surfaces for Direct3D11.
Definition: pixfmt.h:331
the normal 219*2^(n-8) "MPEG" YUV ranges
Definition: pixfmt.h:513
MpegEncContext s
Definition: vc1.h:174
int(* start_frame)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size)
Called at the beginning of each frame or field picture.
Definition: avcodec.h:3930
MpegEncContext.
Definition: mpegvideo.h:78
Picture * next_picture_ptr
pointer to the next picture (for bidir pred)
Definition: mpegvideo.h:180
struct AVCodecContext * avctx
Definition: mpegvideo.h:95
VC-1 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstrea...
Definition: pixfmt.h:112
#define transpose(x)
const AVProfile ff_vc1_profiles[]
Definition: profiles.c:127
discard all non reference
Definition: avcodec.h:826
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
common internal api header.
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
Definition: mpegvideo.h:127
int output_width
Definition: vc1.h:376
enum FrameCodingMode fcm
Frame decoding info for Advanced profile.
Definition: vc1.h:308
static double c[64]
Picture last_picture
copy of the previous picture structure.
Definition: mpegvideo.h:159
Picture * last_picture_ptr
pointer to the previous picture.
Definition: mpegvideo.h:179
Bi-dir predicted.
Definition: avutil.h:276
int res_fasttx
reserved, always 1
Definition: vc1.h:187
int pic_header_flag
Definition: vc1.h:369
int * ttblk
Transform type at the block level.
Definition: vc1.h:259
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:71
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:777
void * priv_data
Definition: avcodec.h:1803
int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
Definition: vc1.c:513
#define PICT_FRAME
Definition: mpegutils.h:39
int picture_structure
Definition: mpegvideo.h:458
#define av_free(p)
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:353
AVFrame * sprite_output_frame
Definition: vc1.h:375
void ff_mpv_frame_end(MpegEncContext *s)
Definition: mpegvideo.c:1424
uint8_t zzi_8x8[64]
Definition: vc1.h:348
int16_t(* block)[64]
points to one of the following blocks
Definition: mpegvideo.h:498
uint8_t rptfrm
Definition: vc1.h:311
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:279
H264ChromaContext h264chroma
Definition: vc1.h:176
int level
Advanced Profile.
Definition: vc1.h:197
#define av_freep(p)
void INT64 INT64 count
Definition: avisynth_c.h:690
void INT64 start
Definition: avisynth_c.h:690
HW decoding through Direct3D11 via old API, Picture.data[3] contains a ID3D11VideoDecoderOutputView p...
Definition: pixfmt.h:247
int new_sprite
Frame decoding info for sprite modes.
Definition: vc1.h:373
uint8_t * mv_f_next[2]
Definition: vc1.h:351
av_cold void ff_qpeldsp_init(QpelDSPContext *c)
Definition: qpeldsp.c:783
#define FFSWAP(type, a, b)
Definition: common.h:99
int two_sprites
Definition: vc1.h:374
uint8_t * mb_type[3]
Definition: vc1.h:264
void(* sprite_h)(uint8_t *dst, const uint8_t *src, int offset, int advance, int count)
Definition: vc1dsp.h:67
uint16_t * hrd_buffer
Definition: vc1.h:326
void ff_vdpau_vc1_decode_picture(MpegEncContext *s, const uint8_t *buf, int buf_size)
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
This structure stores compressed data.
Definition: avcodec.h:1656
static av_always_inline const uint8_t * find_next_marker(const uint8_t *src, const uint8_t *end)
Find VC-1 marker in buffer.
Definition: vc1_common.h:59
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:1002
VC1DSPContext vc1dsp
Definition: vc1.h:177
static int vc1_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Decode a VC1/WMV3 frame.
Definition: vc1dec.c:634
int output_height
Definition: vc1.h:376
static uint8_t tmp[11]
Definition: aes_ctr.c:26