FFmpeg
vc1dec.c
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1 /*
2  * VC-1 and WMV3 decoder
3  * Copyright (c) 2011 Mashiat Sarker Shakkhar
4  * Copyright (c) 2006-2007 Konstantin Shishkov
5  * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 /**
25  * @file
26  * VC-1 and WMV3 decoder
27  */
28 
29 #include "avcodec.h"
30 #include "blockdsp.h"
31 #include "get_bits.h"
32 #include "hwconfig.h"
33 #include "internal.h"
34 #include "mpeg_er.h"
35 #include "mpegvideo.h"
36 #include "msmpeg4.h"
37 #include "msmpeg4data.h"
38 #include "profiles.h"
39 #include "vc1.h"
40 #include "vc1data.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] +
200  v->sprite_output_frame->linesize[plane] * row;
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]) * 3 * s->mb_stride);
344  if (!v->block || !v->cbp_base)
345  goto error;
346  v->cbp = v->cbp_base + 2 * s->mb_stride;
347  v->ttblk_base = av_malloc(sizeof(v->ttblk_base[0]) * 3 * s->mb_stride);
348  if (!v->ttblk_base)
349  goto error;
350  v->ttblk = v->ttblk_base + 2 * s->mb_stride;
351  v->is_intra_base = av_mallocz(sizeof(v->is_intra_base[0]) * 3 * s->mb_stride);
352  if (!v->is_intra_base)
353  goto error;
354  v->is_intra = v->is_intra_base + 2 * s->mb_stride;
355  v->luma_mv_base = av_mallocz(sizeof(v->luma_mv_base[0]) * 3 * s->mb_stride);
356  if (!v->luma_mv_base)
357  goto error;
358  v->luma_mv = v->luma_mv_base + 2 * 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  //for advanced profile we may need to parse and unescape data
673  if (avctx->codec_id == AV_CODEC_ID_VC1 || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
674  int buf_size2 = 0;
675  buf2 = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
676  if (!buf2)
677  return AVERROR(ENOMEM);
678 
679  if (IS_MARKER(AV_RB32(buf))) { /* frame starts with marker and needs to be parsed */
680  const uint8_t *start, *end, *next;
681  int size;
682 
683  next = buf;
684  for (start = buf, end = buf + buf_size; next < end; start = next) {
685  next = find_next_marker(start + 4, end);
686  size = next - start - 4;
687  if (size <= 0) continue;
688  switch (AV_RB32(start)) {
689  case VC1_CODE_FRAME:
690  if (avctx->hwaccel)
691  buf_start = start;
692  buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
693  break;
694  case VC1_CODE_FIELD: {
695  int buf_size3;
696  if (avctx->hwaccel)
697  buf_start_second_field = start;
698  tmp = av_realloc_array(slices, sizeof(*slices), n_slices+1);
699  if (!tmp) {
700  ret = AVERROR(ENOMEM);
701  goto err;
702  }
703  slices = tmp;
704  slices[n_slices].buf = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
705  if (!slices[n_slices].buf) {
706  ret = AVERROR(ENOMEM);
707  goto err;
708  }
709  buf_size3 = vc1_unescape_buffer(start + 4, size,
710  slices[n_slices].buf);
711  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
712  buf_size3 << 3);
713  slices[n_slices].mby_start = avctx->coded_height + 31 >> 5;
714  slices[n_slices].rawbuf = start;
715  slices[n_slices].raw_size = size + 4;
716  n_slices1 = n_slices - 1; // index of the last slice of the first field
717  n_slices++;
718  break;
719  }
720  case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
721  buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
722  init_get_bits(&s->gb, buf2, buf_size2 * 8);
723  ff_vc1_decode_entry_point(avctx, v, &s->gb);
724  break;
725  case VC1_CODE_SLICE: {
726  int buf_size3;
727  tmp = av_realloc_array(slices, sizeof(*slices), n_slices+1);
728  if (!tmp) {
729  ret = AVERROR(ENOMEM);
730  goto err;
731  }
732  slices = tmp;
733  slices[n_slices].buf = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
734  if (!slices[n_slices].buf) {
735  ret = AVERROR(ENOMEM);
736  goto err;
737  }
738  buf_size3 = vc1_unescape_buffer(start + 4, size,
739  slices[n_slices].buf);
740  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
741  buf_size3 << 3);
742  slices[n_slices].mby_start = get_bits(&slices[n_slices].gb, 9);
743  slices[n_slices].rawbuf = start;
744  slices[n_slices].raw_size = size + 4;
745  n_slices++;
746  break;
747  }
748  }
749  }
750  } else if (v->interlace && ((buf[0] & 0xC0) == 0xC0)) { /* WVC1 interlaced stores both fields divided by marker */
751  const uint8_t *divider;
752  int buf_size3;
753 
754  divider = find_next_marker(buf, buf + buf_size);
755  if ((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD) {
756  av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
757  ret = AVERROR_INVALIDDATA;
758  goto err;
759  } else { // found field marker, unescape second field
760  if (avctx->hwaccel)
761  buf_start_second_field = divider;
762  tmp = av_realloc_array(slices, sizeof(*slices), n_slices+1);
763  if (!tmp) {
764  ret = AVERROR(ENOMEM);
765  goto err;
766  }
767  slices = tmp;
768  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
769  if (!slices[n_slices].buf) {
770  ret = AVERROR(ENOMEM);
771  goto err;
772  }
773  buf_size3 = vc1_unescape_buffer(divider + 4, buf + buf_size - divider - 4, slices[n_slices].buf);
774  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
775  buf_size3 << 3);
776  slices[n_slices].mby_start = s->mb_height + 1 >> 1;
777  slices[n_slices].rawbuf = divider;
778  slices[n_slices].raw_size = buf + buf_size - divider;
779  n_slices1 = n_slices - 1;
780  n_slices++;
781  }
782  buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
783  } else {
784  buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
785  }
786  init_get_bits(&s->gb, buf2, buf_size2*8);
787  } else
788  init_get_bits(&s->gb, buf, buf_size*8);
789 
790  if (v->res_sprite) {
791  v->new_sprite = !get_bits1(&s->gb);
792  v->two_sprites = get_bits1(&s->gb);
793  /* res_sprite means a Windows Media Image stream, AV_CODEC_ID_*IMAGE means
794  we're using the sprite compositor. These are intentionally kept separate
795  so you can get the raw sprites by using the wmv3 decoder for WMVP or
796  the vc1 one for WVP2 */
797  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
798  if (v->new_sprite) {
799  // switch AVCodecContext parameters to those of the sprites
800  avctx->width = avctx->coded_width = v->sprite_width;
801  avctx->height = avctx->coded_height = v->sprite_height;
802  } else {
803  goto image;
804  }
805  }
806  }
807 
808  if (s->context_initialized &&
809  (s->width != avctx->coded_width ||
810  s->height != avctx->coded_height)) {
811  ff_vc1_decode_end(avctx);
812  }
813 
814  if (!s->context_initialized) {
815  if ((ret = ff_msmpeg4_decode_init(avctx)) < 0)
816  goto err;
817  if ((ret = ff_vc1_decode_init_alloc_tables(v)) < 0) {
819  goto err;
820  }
821 
822  s->low_delay = !avctx->has_b_frames || v->res_sprite;
823 
824  if (v->profile == PROFILE_ADVANCED) {
825  if(avctx->coded_width<=1 || avctx->coded_height<=1) {
826  ret = AVERROR_INVALIDDATA;
827  goto err;
828  }
829  s->h_edge_pos = avctx->coded_width;
830  s->v_edge_pos = avctx->coded_height;
831  }
832  }
833 
834  // do parse frame header
835  v->pic_header_flag = 0;
836  v->first_pic_header_flag = 1;
837  if (v->profile < PROFILE_ADVANCED) {
838  if ((ret = ff_vc1_parse_frame_header(v, &s->gb)) < 0) {
839  goto err;
840  }
841  } else {
842  if ((ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
843  goto err;
844  }
845  }
846  v->first_pic_header_flag = 0;
847 
848  if (avctx->debug & FF_DEBUG_PICT_INFO)
849  av_log(v->s.avctx, AV_LOG_DEBUG, "pict_type: %c\n", av_get_picture_type_char(s->pict_type));
850 
851  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
852  && s->pict_type != AV_PICTURE_TYPE_I) {
853  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected I-frame\n");
854  ret = AVERROR_INVALIDDATA;
855  goto err;
856  }
857  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
858  && v->field_mode) {
859  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected Frames not Fields\n");
860  ret = AVERROR_INVALIDDATA;
861  goto err;
862  }
863  if ((s->mb_height >> v->field_mode) == 0) {
864  av_log(v->s.avctx, AV_LOG_ERROR, "image too short\n");
865  ret = AVERROR_INVALIDDATA;
866  goto err;
867  }
868 
869  // for skipping the frame
872 
873  /* skip B-frames if we don't have reference frames */
874  if (!s->last_picture_ptr && (s->pict_type == AV_PICTURE_TYPE_B || s->droppable)) {
875  av_log(v->s.avctx, AV_LOG_DEBUG, "Skipping B frame without reference frames\n");
876  goto end;
877  }
878  if ((avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B) ||
880  avctx->skip_frame >= AVDISCARD_ALL) {
881  goto end;
882  }
883 
884  if (s->next_p_frame_damaged) {
885  if (s->pict_type == AV_PICTURE_TYPE_B)
886  goto end;
887  else
888  s->next_p_frame_damaged = 0;
889  }
890 
891  if ((ret = ff_mpv_frame_start(s, avctx)) < 0) {
892  goto err;
893  }
894 
898 
899  // process pulldown flags
901  // Pulldown flags are only valid when 'broadcast' has been set.
902  // So ticks_per_frame will be 2
903  if (v->rff) {
904  // repeat field
906  } else if (v->rptfrm) {
907  // repeat frames
908  s->current_picture_ptr->f->repeat_pict = v->rptfrm * 2;
909  }
910 
913 
914  if (avctx->hwaccel) {
915  s->mb_y = 0;
916  if (v->field_mode && buf_start_second_field) {
917  // decode first field
919  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start, buf_start_second_field - buf_start)) < 0)
920  goto err;
921 
922  if (n_slices1 == -1) {
923  // no slices, decode the field as-is
924  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, buf_start_second_field - buf_start)) < 0)
925  goto err;
926  } else {
927  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, slices[0].rawbuf - buf_start)) < 0)
928  goto err;
929 
930  for (i = 0 ; i < n_slices1 + 1; i++) {
931  s->gb = slices[i].gb;
932  s->mb_y = slices[i].mby_start;
933 
934  v->pic_header_flag = get_bits1(&s->gb);
935  if (v->pic_header_flag) {
936  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
937  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
938  ret = AVERROR_INVALIDDATA;
939  if (avctx->err_recognition & AV_EF_EXPLODE)
940  goto err;
941  continue;
942  }
943  }
944 
945  if ((ret = avctx->hwaccel->decode_slice(avctx, slices[i].rawbuf, slices[i].raw_size)) < 0)
946  goto err;
947  }
948  }
949 
950  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
951  goto err;
952 
953  // decode second field
954  s->gb = slices[n_slices1 + 1].gb;
955  s->mb_y = slices[n_slices1 + 1].mby_start;
957  v->second_field = 1;
958  v->pic_header_flag = 0;
959  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
960  av_log(avctx, AV_LOG_ERROR, "parsing header for second field failed");
961  ret = AVERROR_INVALIDDATA;
962  goto err;
963  }
965 
966  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start_second_field, (buf + buf_size) - buf_start_second_field)) < 0)
967  goto err;
968 
969  if (n_slices - n_slices1 == 2) {
970  // no slices, decode the field as-is
971  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start_second_field, (buf + buf_size) - buf_start_second_field)) < 0)
972  goto err;
973  } else {
974  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start_second_field, slices[n_slices1 + 2].rawbuf - buf_start_second_field)) < 0)
975  goto err;
976 
977  for (i = n_slices1 + 2; i < n_slices; i++) {
978  s->gb = slices[i].gb;
979  s->mb_y = slices[i].mby_start;
980 
981  v->pic_header_flag = get_bits1(&s->gb);
982  if (v->pic_header_flag) {
983  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
984  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
985  ret = AVERROR_INVALIDDATA;
986  if (avctx->err_recognition & AV_EF_EXPLODE)
987  goto err;
988  continue;
989  }
990  }
991 
992  if ((ret = avctx->hwaccel->decode_slice(avctx, slices[i].rawbuf, slices[i].raw_size)) < 0)
993  goto err;
994  }
995  }
996 
997  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
998  goto err;
999  } else {
1001  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start, (buf + buf_size) - buf_start)) < 0)
1002  goto err;
1003 
1004  if (n_slices == 0) {
1005  // no slices, decode the frame as-is
1006  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, (buf + buf_size) - buf_start)) < 0)
1007  goto err;
1008  } else {
1009  // decode the frame part as the first slice
1010  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, slices[0].rawbuf - buf_start)) < 0)
1011  goto err;
1012 
1013  // and process the slices as additional slices afterwards
1014  for (i = 0 ; i < n_slices; i++) {
1015  s->gb = slices[i].gb;
1016  s->mb_y = slices[i].mby_start;
1017 
1018  v->pic_header_flag = get_bits1(&s->gb);
1019  if (v->pic_header_flag) {
1020  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1021  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1022  ret = AVERROR_INVALIDDATA;
1023  if (avctx->err_recognition & AV_EF_EXPLODE)
1024  goto err;
1025  continue;
1026  }
1027  }
1028 
1029  if ((ret = avctx->hwaccel->decode_slice(avctx, slices[i].rawbuf, slices[i].raw_size)) < 0)
1030  goto err;
1031  }
1032  }
1033  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
1034  goto err;
1035  }
1036  } else {
1037  int header_ret = 0;
1038 
1040 
1041  v->end_mb_x = s->mb_width;
1042  if (v->field_mode) {
1043  s->current_picture.f->linesize[0] <<= 1;
1044  s->current_picture.f->linesize[1] <<= 1;
1045  s->current_picture.f->linesize[2] <<= 1;
1046  s->linesize <<= 1;
1047  s->uvlinesize <<= 1;
1048  }
1049  mb_height = s->mb_height >> v->field_mode;
1050 
1051  av_assert0 (mb_height > 0);
1052 
1053  for (i = 0; i <= n_slices; i++) {
1054  if (i > 0 && slices[i - 1].mby_start >= mb_height) {
1055  if (v->field_mode <= 0) {
1056  av_log(v->s.avctx, AV_LOG_ERROR, "Slice %d starts beyond "
1057  "picture boundary (%d >= %d)\n", i,
1058  slices[i - 1].mby_start, mb_height);
1059  continue;
1060  }
1061  v->second_field = 1;
1062  av_assert0((s->mb_height & 1) == 0);
1063  v->blocks_off = s->b8_stride * (s->mb_height&~1);
1064  v->mb_off = s->mb_stride * s->mb_height >> 1;
1065  } else {
1066  v->second_field = 0;
1067  v->blocks_off = 0;
1068  v->mb_off = 0;
1069  }
1070  if (i) {
1071  v->pic_header_flag = 0;
1072  if (v->field_mode && i == n_slices1 + 2) {
1073  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1074  av_log(v->s.avctx, AV_LOG_ERROR, "Field header damaged\n");
1075  ret = AVERROR_INVALIDDATA;
1076  if (avctx->err_recognition & AV_EF_EXPLODE)
1077  goto err;
1078  continue;
1079  }
1080  } else if (get_bits1(&s->gb)) {
1081  v->pic_header_flag = 1;
1082  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1083  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1084  ret = AVERROR_INVALIDDATA;
1085  if (avctx->err_recognition & AV_EF_EXPLODE)
1086  goto err;
1087  continue;
1088  }
1089  }
1090  }
1091  if (header_ret < 0)
1092  continue;
1093  s->start_mb_y = (i == 0) ? 0 : FFMAX(0, slices[i-1].mby_start % mb_height);
1094  if (!v->field_mode || v->second_field)
1095  s->end_mb_y = (i == n_slices ) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1096  else {
1097  if (i >= n_slices) {
1098  av_log(v->s.avctx, AV_LOG_ERROR, "first field slice count too large\n");
1099  continue;
1100  }
1101  s->end_mb_y = (i == n_slices1 + 1) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1102  }
1103  if (s->end_mb_y <= s->start_mb_y) {
1104  av_log(v->s.avctx, AV_LOG_ERROR, "end mb y %d %d invalid\n", s->end_mb_y, s->start_mb_y);
1105  continue;
1106  }
1107  if (((s->pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) ||
1108  (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type)) &&
1109  !v->cbpcy_vlc) {
1110  av_log(v->s.avctx, AV_LOG_ERROR, "missing cbpcy_vlc\n");
1111  continue;
1112  }
1114  if (i != n_slices) {
1115  s->gb = slices[i].gb;
1116  }
1117  }
1118  if (v->field_mode) {
1119  v->second_field = 0;
1120  s->current_picture.f->linesize[0] >>= 1;
1121  s->current_picture.f->linesize[1] >>= 1;
1122  s->current_picture.f->linesize[2] >>= 1;
1123  s->linesize >>= 1;
1124  s->uvlinesize >>= 1;
1126  FFSWAP(uint8_t *, v->mv_f_next[0], v->mv_f[0]);
1127  FFSWAP(uint8_t *, v->mv_f_next[1], v->mv_f[1]);
1128  }
1129  }
1130  ff_dlog(s->avctx, "Consumed %i/%i bits\n",
1131  get_bits_count(&s->gb), s->gb.size_in_bits);
1132 // if (get_bits_count(&s->gb) > buf_size * 8)
1133 // return -1;
1134  if(s->er.error_occurred && s->pict_type == AV_PICTURE_TYPE_B) {
1135  ret = AVERROR_INVALIDDATA;
1136  goto err;
1137  }
1138  if (!v->field_mode)
1139  ff_er_frame_end(&s->er);
1140  }
1141 
1142  ff_mpv_frame_end(s);
1143 
1144  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
1145 image:
1146  avctx->width = avctx->coded_width = v->output_width;
1147  avctx->height = avctx->coded_height = v->output_height;
1148  if (avctx->skip_frame >= AVDISCARD_NONREF)
1149  goto end;
1150 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
1151  if ((ret = vc1_decode_sprites(v, &s->gb)) < 0)
1152  goto err;
1153 #endif
1154  if ((ret = av_frame_ref(pict, v->sprite_output_frame)) < 0)
1155  goto err;
1156  *got_frame = 1;
1157  } else {
1158  if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
1159  if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
1160  goto err;
1162  *got_frame = 1;
1163  } else if (s->last_picture_ptr) {
1164  if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
1165  goto err;
1167  *got_frame = 1;
1168  }
1169  }
1170 
1171 end:
1172  av_free(buf2);
1173  for (i = 0; i < n_slices; i++)
1174  av_free(slices[i].buf);
1175  av_free(slices);
1176  return buf_size;
1177 
1178 err:
1179  av_free(buf2);
1180  for (i = 0; i < n_slices; i++)
1181  av_free(slices[i].buf);
1182  av_free(slices);
1183  return ret;
1184 }
1185 
1186 
1188 #if CONFIG_VC1_DXVA2_HWACCEL
1190 #endif
1191 #if CONFIG_VC1_D3D11VA_HWACCEL
1194 #endif
1195 #if CONFIG_VC1_NVDEC_HWACCEL
1197 #endif
1198 #if CONFIG_VC1_VAAPI_HWACCEL
1200 #endif
1201 #if CONFIG_VC1_VDPAU_HWACCEL
1203 #endif
1206 };
1207 
1209  .name = "vc1",
1210  .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"),
1211  .type = AVMEDIA_TYPE_VIDEO,
1212  .id = AV_CODEC_ID_VC1,
1213  .priv_data_size = sizeof(VC1Context),
1214  .init = vc1_decode_init,
1215  .close = ff_vc1_decode_end,
1217  .flush = ff_mpeg_flush,
1218  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1219  .pix_fmts = vc1_hwaccel_pixfmt_list_420,
1220  .hw_configs = (const AVCodecHWConfigInternal*[]) {
1221 #if CONFIG_VC1_DXVA2_HWACCEL
1222  HWACCEL_DXVA2(vc1),
1223 #endif
1224 #if CONFIG_VC1_D3D11VA_HWACCEL
1225  HWACCEL_D3D11VA(vc1),
1226 #endif
1227 #if CONFIG_VC1_D3D11VA2_HWACCEL
1228  HWACCEL_D3D11VA2(vc1),
1229 #endif
1230 #if CONFIG_VC1_NVDEC_HWACCEL
1231  HWACCEL_NVDEC(vc1),
1232 #endif
1233 #if CONFIG_VC1_VAAPI_HWACCEL
1234  HWACCEL_VAAPI(vc1),
1235 #endif
1236 #if CONFIG_VC1_VDPAU_HWACCEL
1237  HWACCEL_VDPAU(vc1),
1238 #endif
1239  NULL
1240  },
1242 };
1243 
1244 #if CONFIG_WMV3_DECODER
1246  .name = "wmv3",
1247  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9"),
1248  .type = AVMEDIA_TYPE_VIDEO,
1249  .id = AV_CODEC_ID_WMV3,
1250  .priv_data_size = sizeof(VC1Context),
1251  .init = vc1_decode_init,
1252  .close = ff_vc1_decode_end,
1254  .flush = ff_mpeg_flush,
1255  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1256  .pix_fmts = vc1_hwaccel_pixfmt_list_420,
1257  .hw_configs = (const AVCodecHWConfigInternal*[]) {
1258 #if CONFIG_WMV3_DXVA2_HWACCEL
1259  HWACCEL_DXVA2(wmv3),
1260 #endif
1261 #if CONFIG_WMV3_D3D11VA_HWACCEL
1262  HWACCEL_D3D11VA(wmv3),
1263 #endif
1264 #if CONFIG_WMV3_D3D11VA2_HWACCEL
1265  HWACCEL_D3D11VA2(wmv3),
1266 #endif
1267 #if CONFIG_WMV3_NVDEC_HWACCEL
1268  HWACCEL_NVDEC(wmv3),
1269 #endif
1270 #if CONFIG_WMV3_VAAPI_HWACCEL
1271  HWACCEL_VAAPI(wmv3),
1272 #endif
1273 #if CONFIG_WMV3_VDPAU_HWACCEL
1274  HWACCEL_VDPAU(wmv3),
1275 #endif
1276  NULL
1277  },
1279 };
1280 #endif
1281 
1282 #if CONFIG_WMV3IMAGE_DECODER
1284  .name = "wmv3image",
1285  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 Image"),
1286  .type = AVMEDIA_TYPE_VIDEO,
1287  .id = AV_CODEC_ID_WMV3IMAGE,
1288  .priv_data_size = sizeof(VC1Context),
1289  .init = vc1_decode_init,
1290  .close = ff_vc1_decode_end,
1292  .capabilities = AV_CODEC_CAP_DR1,
1293  .flush = vc1_sprite_flush,
1294  .pix_fmts = (const enum AVPixelFormat[]) {
1296  AV_PIX_FMT_NONE
1297  },
1298 };
1299 #endif
1300 
1301 #if CONFIG_VC1IMAGE_DECODER
1303  .name = "vc1image",
1304  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 Image v2"),
1305  .type = AVMEDIA_TYPE_VIDEO,
1306  .id = AV_CODEC_ID_VC1IMAGE,
1307  .priv_data_size = sizeof(VC1Context),
1308  .init = vc1_decode_init,
1309  .close = ff_vc1_decode_end,
1311  .capabilities = AV_CODEC_CAP_DR1,
1312  .flush = vc1_sprite_flush,
1313  .pix_fmts = (const enum AVPixelFormat[]) {
1315  AV_PIX_FMT_NONE
1316  },
1317 };
1318 #endif
int color_prim
8 bits, chroma coordinates of the color primaries
Definition: vc1.h:204
in the bitstream is reported as 00b
Definition: vc1.h:149
AVCodec ff_wmv3image_decoder
IDCTDSPContext idsp
Definition: mpegvideo.h:230
#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:1299
const struct AVCodec * codec
Definition: avcodec.h:540
discard all frames except keyframes
Definition: avcodec.h:235
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:384
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
The VC1 Context.
Definition: vc1.h:173
This structure describes decoded (raw) audio or video data.
Definition: frame.h:314
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:100
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:153
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:349
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:719
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:379
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
int ff_msmpeg4_decode_init(AVCodecContext *avctx)
Definition: msmpeg4dec.c:301
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:154
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:791
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:132
void ff_er_frame_end(ERContext *s)
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:1166
int repeat_pict
When decoding, this signals how much the picture must be delayed.
Definition: frame.h:456
#define HWACCEL_NVDEC(codec)
Definition: hwconfig.h:71
int size
Definition: packet.h:364
int transfer_char
8 bits, Opto-electronic transfer characteristics
Definition: vc1.h:205
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:741
static enum AVPixelFormat vc1_hwaccel_pixfmt_list_420[]
Definition: vc1dec.c:1187
uint8_t zz_8x8[4][64]
Zigzag table for TT_8x8, permuted for IDCT.
Definition: vc1.h:237
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:262
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
discard all
Definition: avcodec.h:236
uint8_t * mv_f[2]
0: MV obtained from same field, 1: opposite field
Definition: vc1.h:349
int sprite_height
Definition: vc1.h:380
static void error(const char *err)
int end_mb_x
Horizontal macroblock limit (used only by mss2)
Definition: vc1.h:397
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:1695
int profile
profile
Definition: avcodec.h:1864
QpelDSPContext qdsp
Definition: mpegvideo.h:235
AVCodec.
Definition: codec.h:190
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:723
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
uint8_t rff
Definition: vc1.h:310
enum AVDiscard skip_frame
Skip decoding for selected frames.
Definition: avcodec.h:2009
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: codec.h:75
#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:320
VC-1 tables.
int bi_type
Definition: vc1.h:385
int matrix_coef
8 bits, Color primaries->YCbCr transform matrix
Definition: vc1.h:206
uint8_t
#define av_cold
Definition: attributes.h:88
#define av_malloc(s)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:190
#define HWACCEL_VDPAU(codec)
Definition: hwconfig.h:75
int first_pic_header_flag
Definition: vc1.h:367
uint16_t * hrd_rate
Definition: vc1.h:325
av_cold int ff_vc1_init_common(VC1Context *v)
Init VC-1 specific tables and VC1Context members.
Definition: vc1.c:1584
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:1617
#define f(width, name)
Definition: cbs_vp9.c:255
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:92
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
int interlace
Progressive/interlaced (RPTFTM syntax element)
Definition: vc1.h:199
int second_field
Definition: vc1.h:353
int n_allocated_blks
Definition: vc1.h:389
qpel_mc_func(* qpel_put)[16]
Definition: motion_est.h:91
#define AV_CODEC_FLAG_LOW_DELAY
Force low delay.
Definition: avcodec.h:325
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:443
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:632
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:91
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:180
int16_t((* luma_mv)[2]
Definition: vc1.h:392
int profile
Sequence header data for all Profiles TODO: choose between ints, uint8_ts and monobit flags...
Definition: vc1.h:216
#define PICT_BOTTOM_FIELD
Definition: mpegutils.h:38
MSMPEG4 data tables.
uint8_t * data
Definition: packet.h:363
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:219
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:88
#define ff_dlog(a,...)
bitstream reader API header.
uint8_t * forward_mb_plane
bitplane for "forward" MBs
Definition: vc1.h:286
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:461
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:129
ptrdiff_t size
Definition: opengl_enc.c:100
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:322
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:308
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:198
#define FFALIGN(x, a)
Definition: macros.h:48
AVCodec ff_wmv3_decoder
#define av_log(a,...)
#define HWACCEL_D3D11VA(codec)
Definition: hwconfig.h:79
int16_t(* block)[6][64]
Definition: vc1.h:388
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:821
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:153
ERContext er
Definition: mpegvideo.h:569
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
#define IS_MARKER(state)
Definition: dca_parser.c:51
uint8_t * mv_f_next_base
Definition: vc1.h:350
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:611
simple assert() macros that are a bit more flexible than ISO C assert().
void ff_vc1_decode_blocks(VC1Context *v)
Definition: vc1_block.c:3005
#define PICT_TOP_FIELD
Definition: mpegutils.h:37
const char * name
Name of the codec implementation.
Definition: codec.h:197
int low_delay
no reordering needed / has no B-frames
Definition: mpegvideo.h:406
qpel_mc_func put_qpel_pixels_tab[2][16]
Definition: qpeldsp.h:73
GetBitContext gb
Definition: mpegvideo.h:451
GLsizei count
Definition: opengl_enc.c:108
void ff_mpv_common_end(MpegEncContext *s)
Definition: mpegvideo.c:1110
#define FFMAX(a, b)
Definition: common.h:94
uint8_t * blk_mv_type
0: frame MV, 1: field MV (interlaced frame)
Definition: vc1.h:348
void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo.c:2287
int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:845
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: codec.h:211
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:397
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:1660
#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:348
#define width
int field_mode
1 for interlaced field pictures
Definition: vc1.h:351
av_cold void ff_intrax8_common_end(IntraX8Context *w)
Destroy IntraX8 frame structure.
Definition: intrax8.c:763
int width
picture width / height.
Definition: avcodec.h:704
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:184
int mb_off
Definition: vc1.h:363
void ff_mpeg_er_frame_start(MpegEncContext *s)
Definition: mpeg_er.c:46
int size_in_bits
Definition: get_bits.h:68
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:1145
int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:626
#define s(width, name)
Definition: cbs_vp9.c:257
int level
level
Definition: avcodec.h:1987
int block_last_index[12]
last non zero coefficient in block
Definition: mpegvideo.h:86
MotionEstContext me
Definition: mpegvideo.h:282
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:1671
HW acceleration through CUDA.
Definition: pixfmt.h:235
uint32_t * cbp
Definition: vc1.h:390
int left_blk_sh
Definition: vc1.h:238
#define HWACCEL_DXVA2(codec)
Definition: hwconfig.h:67
int16_t(* luma_mv_base)[2]
Definition: vc1.h:392
uint8_t * fieldtx_plane
Definition: vc1.h:345
int * ttblk_base
Definition: vc1.h:257
VLC * cbpcy_vlc
CBPCY VLC table.
Definition: vc1.h:282
uint8_t * sr_rows[2][2]
Sprite resizer line cache.
Definition: vc1.h:381
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AV_LOG_INFO
Standard information.
Definition: log.h:205
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:181
int top_blk_sh
Either 3 or 0, positions of l/t in blk[].
Definition: vc1.h:238
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:134
int(* end_frame)(AVCodecContext *avctx)
Called at the end of each frame or field picture.
Definition: avcodec.h:2516
enum AVCodecID codec_id
Definition: avcodec.h:541
BlockDSPContext bdsp
Definition: mpegvideo.h:226
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:345
#define abs(x)
Definition: cuda_runtime.h:35
int debug
debug
Definition: avcodec.h:1616
uint32_t * cbp_base
Definition: vc1.h:390
static const int16_t alpha[]
Definition: ilbcdata.h:55
main external API structure.
Definition: avcodec.h:531
uint8_t * is_intra
Definition: vc1.h:391
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:100
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1879
void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
Definition: mpegvideo.c:1419
int extradata_size
Definition: avcodec.h:633
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:498
int sprite_width
Definition: vc1.h:380
uint8_t * is_intra_base
Definition: vc1.h:391
int coded_height
Definition: avcodec.h:719
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:467
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:1159
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:1152
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:197
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:659
int context_initialized
Definition: mpegvideo.h:124
#define HWACCEL_D3D11VA2(codec)
Definition: hwconfig.h:69
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:135
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:1187
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:546
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:285
HW decoding through DXVA2, Picture.data[3] contains a LPDIRECT3DSURFACE9 pointer. ...
Definition: pixfmt.h:137
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:212
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:300
AVCodec ff_vc1_decoder
Definition: vc1dec.c:1208
uint8_t * mv_type_mb_plane
bitplane for mv_type == (4MV)
Definition: vc1.h:284
int blocks_off
Definition: vc1.h:363
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:553
int(* decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size)
Callback for each slice.
Definition: avcodec.h:2505
uint8_t tff
Definition: vc1.h:310
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:328
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:131
Hardware surfaces for Direct3D11.
Definition: pixfmt.h:313
Narrow or limited range content.
Definition: pixfmt.h:569
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:2477
MpegEncContext.
Definition: mpegvideo.h:81
Picture * next_picture_ptr
pointer to the next picture (for bidir pred)
Definition: mpegvideo.h:183
struct AVCodecContext * avctx
Definition: mpegvideo.h:98
#define transpose(x)
const AVProfile ff_vc1_profiles[]
Definition: profiles.c:125
discard all non reference
Definition: avcodec.h:232
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:130
int output_width
Definition: vc1.h:380
enum FrameCodingMode fcm
Frame decoding info for Advanced profile.
Definition: vc1.h:307
Picture last_picture
copy of the previous picture structure.
Definition: mpegvideo.h:162
Picture * last_picture_ptr
pointer to the previous picture.
Definition: mpegvideo.h:182
Bi-dir predicted.
Definition: avutil.h:276
int res_fasttx
reserved, always 1
Definition: vc1.h:185
int pic_header_flag
Definition: vc1.h:368
int * ttblk
Transform type at the block level.
Definition: vc1.h:257
#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:215
void * priv_data
Definition: avcodec.h:558
int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
Definition: vc1.c:508
#define PICT_FRAME
Definition: mpegutils.h:39
int picture_structure
Definition: mpegvideo.h:464
#define av_free(p)
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:466
AVFrame * sprite_output_frame
Definition: vc1.h:379
void ff_mpv_frame_end(MpegEncContext *s)
Definition: mpegvideo.c:1411
#define HWACCEL_VAAPI(codec)
Definition: hwconfig.h:73
uint8_t zzi_8x8[64]
Definition: vc1.h:347
int16_t(* block)[64]
points to one of the following blocks
Definition: mpegvideo.h:511
AVCodec ff_vc1image_decoder
uint8_t rptfrm
Definition: vc1.h:310
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:392
H264ChromaContext h264chroma
Definition: vc1.h:176
int level
Advanced Profile.
Definition: vc1.h:195
#define av_freep(p)
HW decoding through Direct3D11 via old API, Picture.data[3] contains a ID3D11VideoDecoderOutputView p...
Definition: pixfmt.h:229
int new_sprite
Frame decoding info for sprite modes.
Definition: vc1.h:377
uint8_t * mv_f_next[2]
Definition: vc1.h:350
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:378
uint8_t * mb_type[3]
Definition: vc1.h:262
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:325
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
This structure stores compressed data.
Definition: packet.h:340
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: codec.h:50
int i
Definition: input.c:407
VC1DSPContext vc1dsp
Definition: vc1.h:177
Predicted.
Definition: avutil.h:275
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:380
static uint8_t tmp[11]
Definition: aes_ctr.c:26