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 "hwaccel.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] +
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 -1;
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 -1;
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 -1;
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) return -1;
580 
581  if ((v->sprite_width&1) || (v->sprite_height&1)) {
582  avpriv_request_sample(avctx, "odd sprites support");
583  return AVERROR_PATCHWELCOME;
584  }
585  }
586  return 0;
587 }
588 
589 /** Close a VC1/WMV3 decoder
590  * @warning Initial try at using MpegEncContext stuff
591  */
593 {
594  VC1Context *v = avctx->priv_data;
595  int i;
596 
598 
599  for (i = 0; i < 4; i++)
600  av_freep(&v->sr_rows[i >> 1][i & 1]);
601  av_freep(&v->hrd_rate);
602  av_freep(&v->hrd_buffer);
603  ff_mpv_common_end(&v->s);
607  av_freep(&v->fieldtx_plane);
608  av_freep(&v->acpred_plane);
610  av_freep(&v->mb_type_base);
612  av_freep(&v->mv_f_base);
614  av_freep(&v->block);
615  av_freep(&v->cbp_base);
616  av_freep(&v->ttblk_base);
617  av_freep(&v->is_intra_base); // FIXME use v->mb_type[]
618  av_freep(&v->luma_mv_base);
620  return 0;
621 }
622 
623 
624 /** Decode a VC1/WMV3 frame
625  * @todo TODO: Handle VC-1 IDUs (Transport level?)
626  */
627 static int vc1_decode_frame(AVCodecContext *avctx, void *data,
628  int *got_frame, AVPacket *avpkt)
629 {
630  const uint8_t *buf = avpkt->data;
631  int buf_size = avpkt->size, n_slices = 0, i, ret;
632  VC1Context *v = avctx->priv_data;
633  MpegEncContext *s = &v->s;
634  AVFrame *pict = data;
635  uint8_t *buf2 = NULL;
636  const uint8_t *buf_start = buf, *buf_start_second_field = NULL;
637  int mb_height, n_slices1=-1;
638  struct {
639  uint8_t *buf;
640  GetBitContext gb;
641  int mby_start;
642  const uint8_t *rawbuf;
643  int raw_size;
644  } *slices = NULL, *tmp;
645 
646  v->second_field = 0;
647 
649  s->low_delay = 1;
650 
651  /* no supplementary picture */
652  if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == VC1_CODE_ENDOFSEQ)) {
653  /* special case for last picture */
654  if (s->low_delay == 0 && s->next_picture_ptr) {
655  if ((ret = av_frame_ref(pict, s->next_picture_ptr->f)) < 0)
656  return ret;
657  s->next_picture_ptr = NULL;
658 
659  *got_frame = 1;
660  }
661 
662  return buf_size;
663  }
664 
665  //for advanced profile we may need to parse and unescape data
666  if (avctx->codec_id == AV_CODEC_ID_VC1 || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
667  int buf_size2 = 0;
668  buf2 = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
669  if (!buf2)
670  return AVERROR(ENOMEM);
671 
672  if (IS_MARKER(AV_RB32(buf))) { /* frame starts with marker and needs to be parsed */
673  const uint8_t *start, *end, *next;
674  int size;
675 
676  next = buf;
677  for (start = buf, end = buf + buf_size; next < end; start = next) {
678  next = find_next_marker(start + 4, end);
679  size = next - start - 4;
680  if (size <= 0) continue;
681  switch (AV_RB32(start)) {
682  case VC1_CODE_FRAME:
683  if (avctx->hwaccel)
684  buf_start = start;
685  buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
686  break;
687  case VC1_CODE_FIELD: {
688  int buf_size3;
689  if (avctx->hwaccel)
690  buf_start_second_field = start;
691  tmp = av_realloc_array(slices, sizeof(*slices), (n_slices+1));
692  if (!tmp) {
693  ret = AVERROR(ENOMEM);
694  goto err;
695  }
696  slices = tmp;
697  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
698  if (!slices[n_slices].buf) {
699  ret = AVERROR(ENOMEM);
700  goto err;
701  }
702  buf_size3 = vc1_unescape_buffer(start + 4, size,
703  slices[n_slices].buf);
704  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
705  buf_size3 << 3);
706  slices[n_slices].mby_start = avctx->coded_height + 31 >> 5;
707  slices[n_slices].rawbuf = start;
708  slices[n_slices].raw_size = size + 4;
709  n_slices1 = n_slices - 1; // index of the last slice of the first field
710  n_slices++;
711  break;
712  }
713  case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
714  buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
715  init_get_bits(&s->gb, buf2, buf_size2 * 8);
716  ff_vc1_decode_entry_point(avctx, v, &s->gb);
717  break;
718  case VC1_CODE_SLICE: {
719  int buf_size3;
720  tmp = av_realloc_array(slices, sizeof(*slices), (n_slices+1));
721  if (!tmp) {
722  ret = AVERROR(ENOMEM);
723  goto err;
724  }
725  slices = tmp;
726  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
727  if (!slices[n_slices].buf) {
728  ret = AVERROR(ENOMEM);
729  goto err;
730  }
731  buf_size3 = vc1_unescape_buffer(start + 4, size,
732  slices[n_slices].buf);
733  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
734  buf_size3 << 3);
735  slices[n_slices].mby_start = get_bits(&slices[n_slices].gb, 9);
736  slices[n_slices].rawbuf = start;
737  slices[n_slices].raw_size = size + 4;
738  n_slices++;
739  break;
740  }
741  }
742  }
743  } else if (v->interlace && ((buf[0] & 0xC0) == 0xC0)) { /* WVC1 interlaced stores both fields divided by marker */
744  const uint8_t *divider;
745  int buf_size3;
746 
747  divider = find_next_marker(buf, buf + buf_size);
748  if ((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD) {
749  av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
750  ret = AVERROR_INVALIDDATA;
751  goto err;
752  } else { // found field marker, unescape second field
753  if (avctx->hwaccel)
754  buf_start_second_field = divider;
755  tmp = av_realloc_array(slices, sizeof(*slices), (n_slices+1));
756  if (!tmp) {
757  ret = AVERROR(ENOMEM);
758  goto err;
759  }
760  slices = tmp;
761  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
762  if (!slices[n_slices].buf) {
763  ret = AVERROR(ENOMEM);
764  goto err;
765  }
766  buf_size3 = vc1_unescape_buffer(divider + 4, buf + buf_size - divider - 4, slices[n_slices].buf);
767  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
768  buf_size3 << 3);
769  slices[n_slices].mby_start = s->mb_height + 1 >> 1;
770  slices[n_slices].rawbuf = divider;
771  slices[n_slices].raw_size = buf + buf_size - divider;
772  n_slices1 = n_slices - 1;
773  n_slices++;
774  }
775  buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
776  } else {
777  buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
778  }
779  init_get_bits(&s->gb, buf2, buf_size2*8);
780  } else
781  init_get_bits(&s->gb, buf, buf_size*8);
782 
783  if (v->res_sprite) {
784  v->new_sprite = !get_bits1(&s->gb);
785  v->two_sprites = get_bits1(&s->gb);
786  /* res_sprite means a Windows Media Image stream, AV_CODEC_ID_*IMAGE means
787  we're using the sprite compositor. These are intentionally kept separate
788  so you can get the raw sprites by using the wmv3 decoder for WMVP or
789  the vc1 one for WVP2 */
790  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
791  if (v->new_sprite) {
792  // switch AVCodecContext parameters to those of the sprites
793  avctx->width = avctx->coded_width = v->sprite_width;
794  avctx->height = avctx->coded_height = v->sprite_height;
795  } else {
796  goto image;
797  }
798  }
799  }
800 
801  if (s->context_initialized &&
802  (s->width != avctx->coded_width ||
803  s->height != avctx->coded_height)) {
804  ff_vc1_decode_end(avctx);
805  }
806 
807  if (!s->context_initialized) {
808  if ((ret = ff_msmpeg4_decode_init(avctx)) < 0)
809  goto err;
810  if ((ret = ff_vc1_decode_init_alloc_tables(v)) < 0) {
812  goto err;
813  }
814 
815  s->low_delay = !avctx->has_b_frames || v->res_sprite;
816 
817  if (v->profile == PROFILE_ADVANCED) {
818  if(avctx->coded_width<=1 || avctx->coded_height<=1) {
819  ret = AVERROR_INVALIDDATA;
820  goto err;
821  }
822  s->h_edge_pos = avctx->coded_width;
823  s->v_edge_pos = avctx->coded_height;
824  }
825  }
826 
827  // do parse frame header
828  v->pic_header_flag = 0;
829  v->first_pic_header_flag = 1;
830  if (v->profile < PROFILE_ADVANCED) {
831  if ((ret = ff_vc1_parse_frame_header(v, &s->gb)) < 0) {
832  goto err;
833  }
834  } else {
835  if ((ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
836  goto err;
837  }
838  }
839  v->first_pic_header_flag = 0;
840 
841  if (avctx->debug & FF_DEBUG_PICT_INFO)
842  av_log(v->s.avctx, AV_LOG_DEBUG, "pict_type: %c\n", av_get_picture_type_char(s->pict_type));
843 
844  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
845  && s->pict_type != AV_PICTURE_TYPE_I) {
846  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected I-frame\n");
847  ret = AVERROR_INVALIDDATA;
848  goto err;
849  }
850 
851  if ((s->mb_height >> v->field_mode) == 0) {
852  av_log(v->s.avctx, AV_LOG_ERROR, "image too short\n");
853  ret = AVERROR_INVALIDDATA;
854  goto err;
855  }
856 
857  // for skipping the frame
860 
861  /* skip B-frames if we don't have reference frames */
862  if (!s->last_picture_ptr && (s->pict_type == AV_PICTURE_TYPE_B || s->droppable)) {
863  av_log(v->s.avctx, AV_LOG_DEBUG, "Skipping B frame without reference frames\n");
864  goto end;
865  }
866  if ((avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B) ||
868  avctx->skip_frame >= AVDISCARD_ALL) {
869  goto end;
870  }
871 
872  if (s->next_p_frame_damaged) {
873  if (s->pict_type == AV_PICTURE_TYPE_B)
874  goto end;
875  else
876  s->next_p_frame_damaged = 0;
877  }
878 
879  if ((ret = ff_mpv_frame_start(s, avctx)) < 0) {
880  goto err;
881  }
882 
886 
887  // process pulldown flags
889  // Pulldown flags are only valid when 'broadcast' has been set.
890  // So ticks_per_frame will be 2
891  if (v->rff) {
892  // repeat field
894  } else if (v->rptfrm) {
895  // repeat frames
896  s->current_picture_ptr->f->repeat_pict = v->rptfrm * 2;
897  }
898 
901 
902  if (avctx->hwaccel) {
903  s->mb_y = 0;
904  if (v->field_mode && buf_start_second_field) {
905  // decode first field
907  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start, buf_start_second_field - buf_start)) < 0)
908  goto err;
909 
910  if (n_slices1 == -1) {
911  // no slices, decode the field as-is
912  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, buf_start_second_field - buf_start)) < 0)
913  goto err;
914  } else {
915  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, slices[0].rawbuf - buf_start)) < 0)
916  goto err;
917 
918  for (i = 0 ; i < n_slices1 + 1; i++) {
919  s->gb = slices[i].gb;
920  s->mb_y = slices[i].mby_start;
921 
922  v->pic_header_flag = get_bits1(&s->gb);
923  if (v->pic_header_flag) {
924  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
925  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
926  ret = AVERROR_INVALIDDATA;
927  if (avctx->err_recognition & AV_EF_EXPLODE)
928  goto err;
929  continue;
930  }
931  }
932 
933  if ((ret = avctx->hwaccel->decode_slice(avctx, slices[i].rawbuf, slices[i].raw_size)) < 0)
934  goto err;
935  }
936  }
937 
938  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
939  goto err;
940 
941  // decode second field
942  s->gb = slices[n_slices1 + 1].gb;
943  s->mb_y = slices[n_slices1 + 1].mby_start;
945  v->second_field = 1;
946  v->pic_header_flag = 0;
947  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
948  av_log(avctx, AV_LOG_ERROR, "parsing header for second field failed");
949  ret = AVERROR_INVALIDDATA;
950  goto err;
951  }
953 
954  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start_second_field, (buf + buf_size) - buf_start_second_field)) < 0)
955  goto err;
956 
957  if (n_slices - n_slices1 == 2) {
958  // no slices, decode the field as-is
959  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start_second_field, (buf + buf_size) - buf_start_second_field)) < 0)
960  goto err;
961  } else {
962  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start_second_field, slices[n_slices1 + 2].rawbuf - buf_start_second_field)) < 0)
963  goto err;
964 
965  for (i = n_slices1 + 2; i < n_slices; i++) {
966  s->gb = slices[i].gb;
967  s->mb_y = slices[i].mby_start;
968 
969  v->pic_header_flag = get_bits1(&s->gb);
970  if (v->pic_header_flag) {
971  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
972  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
973  ret = AVERROR_INVALIDDATA;
974  if (avctx->err_recognition & AV_EF_EXPLODE)
975  goto err;
976  continue;
977  }
978  }
979 
980  if ((ret = avctx->hwaccel->decode_slice(avctx, slices[i].rawbuf, slices[i].raw_size)) < 0)
981  goto err;
982  }
983  }
984 
985  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
986  goto err;
987  } else {
989  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start, (buf + buf_size) - buf_start)) < 0)
990  goto err;
991 
992  if (n_slices == 0) {
993  // no slices, decode the frame as-is
994  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, (buf + buf_size) - buf_start)) < 0)
995  goto err;
996  } else {
997  // decode the frame part as the first slice
998  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, slices[0].rawbuf - buf_start)) < 0)
999  goto err;
1000 
1001  // and process the slices as additional slices afterwards
1002  for (i = 0 ; i < n_slices; i++) {
1003  s->gb = slices[i].gb;
1004  s->mb_y = slices[i].mby_start;
1005 
1006  v->pic_header_flag = get_bits1(&s->gb);
1007  if (v->pic_header_flag) {
1008  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1009  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1010  ret = AVERROR_INVALIDDATA;
1011  if (avctx->err_recognition & AV_EF_EXPLODE)
1012  goto err;
1013  continue;
1014  }
1015  }
1016 
1017  if ((ret = avctx->hwaccel->decode_slice(avctx, slices[i].rawbuf, slices[i].raw_size)) < 0)
1018  goto err;
1019  }
1020  }
1021  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
1022  goto err;
1023  }
1024  } else {
1025  int header_ret = 0;
1026 
1028 
1029  v->bits = buf_size * 8;
1030  v->end_mb_x = s->mb_width;
1031  if (v->field_mode) {
1032  s->current_picture.f->linesize[0] <<= 1;
1033  s->current_picture.f->linesize[1] <<= 1;
1034  s->current_picture.f->linesize[2] <<= 1;
1035  s->linesize <<= 1;
1036  s->uvlinesize <<= 1;
1037  }
1038  mb_height = s->mb_height >> v->field_mode;
1039 
1040  av_assert0 (mb_height > 0);
1041 
1042  for (i = 0; i <= n_slices; i++) {
1043  if (i > 0 && slices[i - 1].mby_start >= mb_height) {
1044  if (v->field_mode <= 0) {
1045  av_log(v->s.avctx, AV_LOG_ERROR, "Slice %d starts beyond "
1046  "picture boundary (%d >= %d)\n", i,
1047  slices[i - 1].mby_start, mb_height);
1048  continue;
1049  }
1050  v->second_field = 1;
1051  av_assert0((s->mb_height & 1) == 0);
1052  v->blocks_off = s->b8_stride * (s->mb_height&~1);
1053  v->mb_off = s->mb_stride * s->mb_height >> 1;
1054  } else {
1055  v->second_field = 0;
1056  v->blocks_off = 0;
1057  v->mb_off = 0;
1058  }
1059  if (i) {
1060  v->pic_header_flag = 0;
1061  if (v->field_mode && i == n_slices1 + 2) {
1062  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1063  av_log(v->s.avctx, AV_LOG_ERROR, "Field header damaged\n");
1064  ret = AVERROR_INVALIDDATA;
1065  if (avctx->err_recognition & AV_EF_EXPLODE)
1066  goto err;
1067  continue;
1068  }
1069  } else if (get_bits1(&s->gb)) {
1070  v->pic_header_flag = 1;
1071  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1072  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1073  ret = AVERROR_INVALIDDATA;
1074  if (avctx->err_recognition & AV_EF_EXPLODE)
1075  goto err;
1076  continue;
1077  }
1078  }
1079  }
1080  if (header_ret < 0)
1081  continue;
1082  s->start_mb_y = (i == 0) ? 0 : FFMAX(0, slices[i-1].mby_start % mb_height);
1083  if (!v->field_mode || v->second_field)
1084  s->end_mb_y = (i == n_slices ) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1085  else {
1086  if (i >= n_slices) {
1087  av_log(v->s.avctx, AV_LOG_ERROR, "first field slice count too large\n");
1088  continue;
1089  }
1090  s->end_mb_y = (i == n_slices1 + 1) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1091  }
1092  if (s->end_mb_y <= s->start_mb_y) {
1093  av_log(v->s.avctx, AV_LOG_ERROR, "end mb y %d %d invalid\n", s->end_mb_y, s->start_mb_y);
1094  continue;
1095  }
1096  if (((s->pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) ||
1097  (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type)) &&
1098  !v->cbpcy_vlc) {
1099  av_log(v->s.avctx, AV_LOG_ERROR, "missing cbpcy_vlc\n");
1100  continue;
1101  }
1103  if (i != n_slices)
1104  s->gb = slices[i].gb;
1105  }
1106  if (v->field_mode) {
1107  v->second_field = 0;
1108  s->current_picture.f->linesize[0] >>= 1;
1109  s->current_picture.f->linesize[1] >>= 1;
1110  s->current_picture.f->linesize[2] >>= 1;
1111  s->linesize >>= 1;
1112  s->uvlinesize >>= 1;
1114  FFSWAP(uint8_t *, v->mv_f_next[0], v->mv_f[0]);
1115  FFSWAP(uint8_t *, v->mv_f_next[1], v->mv_f[1]);
1116  }
1117  }
1118  ff_dlog(s->avctx, "Consumed %i/%i bits\n",
1119  get_bits_count(&s->gb), s->gb.size_in_bits);
1120 // if (get_bits_count(&s->gb) > buf_size * 8)
1121 // return -1;
1122  if(s->er.error_occurred && s->pict_type == AV_PICTURE_TYPE_B) {
1123  ret = AVERROR_INVALIDDATA;
1124  goto err;
1125  }
1126  if (!v->field_mode)
1127  ff_er_frame_end(&s->er);
1128  }
1129 
1130  ff_mpv_frame_end(s);
1131 
1132  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
1133 image:
1134  avctx->width = avctx->coded_width = v->output_width;
1135  avctx->height = avctx->coded_height = v->output_height;
1136  if (avctx->skip_frame >= AVDISCARD_NONREF)
1137  goto end;
1138 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
1139  if ((ret = vc1_decode_sprites(v, &s->gb)) < 0)
1140  goto err;
1141 #endif
1142  if ((ret = av_frame_ref(pict, v->sprite_output_frame)) < 0)
1143  goto err;
1144  *got_frame = 1;
1145  } else {
1146  if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
1147  if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
1148  goto err;
1150  *got_frame = 1;
1151  } else if (s->last_picture_ptr) {
1152  if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
1153  goto err;
1155  *got_frame = 1;
1156  }
1157  }
1158 
1159 end:
1160  av_free(buf2);
1161  for (i = 0; i < n_slices; i++)
1162  av_free(slices[i].buf);
1163  av_free(slices);
1164  return buf_size;
1165 
1166 err:
1167  av_free(buf2);
1168  for (i = 0; i < n_slices; i++)
1169  av_free(slices[i].buf);
1170  av_free(slices);
1171  return ret;
1172 }
1173 
1174 
1176 #if CONFIG_VC1_DXVA2_HWACCEL
1178 #endif
1179 #if CONFIG_VC1_D3D11VA_HWACCEL
1182 #endif
1183 #if CONFIG_VC1_NVDEC_HWACCEL
1185 #endif
1186 #if CONFIG_VC1_VAAPI_HWACCEL
1188 #endif
1189 #if CONFIG_VC1_VDPAU_HWACCEL
1191 #endif
1194 };
1195 
1197  .name = "vc1",
1198  .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"),
1199  .type = AVMEDIA_TYPE_VIDEO,
1200  .id = AV_CODEC_ID_VC1,
1201  .priv_data_size = sizeof(VC1Context),
1202  .init = vc1_decode_init,
1203  .close = ff_vc1_decode_end,
1205  .flush = ff_mpeg_flush,
1206  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1207  .pix_fmts = vc1_hwaccel_pixfmt_list_420,
1208  .hw_configs = (const AVCodecHWConfigInternal*[]) {
1209 #if CONFIG_VC1_DXVA2_HWACCEL
1210  HWACCEL_DXVA2(vc1),
1211 #endif
1212 #if CONFIG_VC1_D3D11VA_HWACCEL
1213  HWACCEL_D3D11VA(vc1),
1214 #endif
1215 #if CONFIG_VC1_D3D11VA2_HWACCEL
1216  HWACCEL_D3D11VA2(vc1),
1217 #endif
1218 #if CONFIG_VC1_NVDEC_HWACCEL
1219  HWACCEL_NVDEC(vc1),
1220 #endif
1221 #if CONFIG_VC1_VAAPI_HWACCEL
1222  HWACCEL_VAAPI(vc1),
1223 #endif
1224 #if CONFIG_VC1_VDPAU_HWACCEL
1225  HWACCEL_VDPAU(vc1),
1226 #endif
1227  NULL
1228  },
1230 };
1231 
1232 #if CONFIG_WMV3_DECODER
1234  .name = "wmv3",
1235  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9"),
1236  .type = AVMEDIA_TYPE_VIDEO,
1237  .id = AV_CODEC_ID_WMV3,
1238  .priv_data_size = sizeof(VC1Context),
1239  .init = vc1_decode_init,
1240  .close = ff_vc1_decode_end,
1242  .flush = ff_mpeg_flush,
1243  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1244  .pix_fmts = vc1_hwaccel_pixfmt_list_420,
1245  .hw_configs = (const AVCodecHWConfigInternal*[]) {
1246 #if CONFIG_WMV3_DXVA2_HWACCEL
1247  HWACCEL_DXVA2(wmv3),
1248 #endif
1249 #if CONFIG_WMV3_D3D11VA_HWACCEL
1250  HWACCEL_D3D11VA(wmv3),
1251 #endif
1252 #if CONFIG_WMV3_D3D11VA2_HWACCEL
1253  HWACCEL_D3D11VA2(wmv3),
1254 #endif
1255 #if CONFIG_WMV3_NVDEC_HWACCEL
1256  HWACCEL_NVDEC(wmv3),
1257 #endif
1258 #if CONFIG_WMV3_VAAPI_HWACCEL
1259  HWACCEL_VAAPI(wmv3),
1260 #endif
1261 #if CONFIG_WMV3_VDPAU_HWACCEL
1262  HWACCEL_VDPAU(wmv3),
1263 #endif
1264  NULL
1265  },
1267 };
1268 #endif
1269 
1270 #if CONFIG_WMV3IMAGE_DECODER
1272  .name = "wmv3image",
1273  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 Image"),
1274  .type = AVMEDIA_TYPE_VIDEO,
1275  .id = AV_CODEC_ID_WMV3IMAGE,
1276  .priv_data_size = sizeof(VC1Context),
1277  .init = vc1_decode_init,
1278  .close = ff_vc1_decode_end,
1280  .capabilities = AV_CODEC_CAP_DR1,
1281  .flush = vc1_sprite_flush,
1282  .pix_fmts = (const enum AVPixelFormat[]) {
1284  AV_PIX_FMT_NONE
1285  },
1286 };
1287 #endif
1288 
1289 #if CONFIG_VC1IMAGE_DECODER
1291  .name = "vc1image",
1292  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 Image v2"),
1293  .type = AVMEDIA_TYPE_VIDEO,
1294  .id = AV_CODEC_ID_VC1IMAGE,
1295  .priv_data_size = sizeof(VC1Context),
1296  .init = vc1_decode_init,
1297  .close = ff_vc1_decode_end,
1299  .capabilities = AV_CODEC_CAP_DR1,
1300  .flush = vc1_sprite_flush,
1301  .pix_fmts = (const enum AVPixelFormat[]) {
1303  AV_PIX_FMT_NONE
1304  },
1305 };
1306 #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:384
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:1370
const struct AVCodec * codec
Definition: avcodec.h:1580
discard all frames except keyframes
Definition: avcodec.h:816
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:386
#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:295
#define HWACCEL_D3D11VA2(codec)
Definition: hwaccel.h:69
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:351
#define HWACCEL_NVDEC(codec)
Definition: hwaccel.h:71
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1759
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:182
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:1831
av_cold int ff_vc1_decode_end(AVCodecContext *avctx)
Close a VC1/WMV3 decoder.
Definition: vc1dec.c:592
#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:2206
int repeat_pict
When decoding, this signals how much the picture must be delayed.
Definition: frame.h:437
int size
Definition: avcodec.h:1484
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:1781
static enum AVPixelFormat vc1_hwaccel_pixfmt_list_420[]
Definition: vc1dec.c:1175
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
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
discard all
Definition: avcodec.h:817
uint8_t * mv_f[2]
0: MV obtained from same field, 1: opposite field
Definition: vc1.h:351
int sprite_height
Definition: vc1.h:382
#define HWACCEL_D3D11VA(codec)
Definition: hwaccel.h:79
static void error(const char *err)
int end_mb_x
Horizontal macroblock limit (used only by mss2)
Definition: vc1.h:399
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2735
int profile
profile
Definition: avcodec.h:2904
QpelDSPContext qdsp
Definition: mpegvideo.h:235
AVCodec.
Definition: avcodec.h:3495
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:71
uint8_t rff
Definition: vc1.h:312
enum AVDiscard skip_frame
Skip decoding for selected frames.
Definition: avcodec.h:3046
int bits
Definition: vc1.h:179
#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:1012
#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:322
VC-1 tables.
int bi_type
Definition: vc1.h:387
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:189
int first_pic_header_flag
Definition: vc1.h:369
uint16_t * hrd_rate
Definition: vc1.h:327
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:2657
#define f(width, name)
Definition: cbs_vp9.c:255
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
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:201
int second_field
Definition: vc1.h:355
int n_allocated_blks
Definition: vc1.h:391
qpel_mc_func(* qpel_put)[16]
Definition: motion_est.h:91
#define AV_CODEC_FLAG_LOW_DELAY
Force low delay.
Definition: avcodec.h:906
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:1672
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:87
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:180
int16_t((* luma_mv)[2]
Definition: vc1.h:394
int profile
Sequence header data for all Profiles TODO: choose between ints, uint8_ts and monobit flags...
Definition: vc1.h:218
#define PICT_BOTTOM_FIELD
Definition: mpegutils.h:38
MSMPEG4 data tables.
uint8_t * data
Definition: avcodec.h:1483
#define HWACCEL_DXVA2(codec)
Definition: hwaccel.h:67
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:288
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:442
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:324
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:889
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,...)
int16_t(* block)[6][64]
Definition: vc1.h:390
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#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:1861
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
ERContext er
Definition: mpegvideo.h:566
#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:352
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1651
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: avcodec.h:3502
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:448
GLsizei count
Definition: opengl_enc.c:108
void ff_mpv_common_end(MpegEncContext *s)
Definition: mpegvideo.c:1133
#define FFMAX(a, b)
Definition: common.h:94
uint8_t * blk_mv_type
0: frame MV, 1: field MV (interlaced frame)
Definition: vc1.h:350
void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo.c:2307
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: avcodec.h:3516
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:378
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:2700
#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:350
#define width
int field_mode
1 for interlaced field pictures
Definition: vc1.h:353
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:1744
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:184
int mb_off
Definition: vc1.h:365
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:2185
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:3024
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:2711
HW acceleration through CUDA.
Definition: pixfmt.h:235
uint32_t * cbp
Definition: vc1.h:392
int left_blk_sh
Definition: vc1.h:240
int16_t(* luma_mv_base)[2]
Definition: vc1.h:394
uint8_t * fieldtx_plane
Definition: vc1.h:347
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:383
#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:134
int(* end_frame)(AVCodecContext *avctx)
Called at the end of each frame or field picture.
Definition: avcodec.h:3764
enum AVCodecID codec_id
Definition: avcodec.h:1581
BlockDSPContext bdsp
Definition: mpegvideo.h:226
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
#define abs(x)
Definition: cuda_runtime.h:35
int debug
debug
Definition: avcodec.h:2656
uint32_t * cbp_base
Definition: vc1.h:392
static const int16_t alpha[]
Definition: ilbcdata.h:55
main external API structure.
Definition: avcodec.h:1571
uint8_t * is_intra
Definition: vc1.h:393
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:1968
void * buf
Definition: avisynth_c.h:766
void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
Definition: mpegvideo.c:1439
int extradata_size
Definition: avcodec.h:1673
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:498
int sprite_width
Definition: vc1.h:382
uint8_t * is_intra_base
Definition: vc1.h:393
int coded_height
Definition: avcodec.h:1759
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:467
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:2199
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:2192
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
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:1207
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:287
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:275
AVCodec ff_vc1_decoder
Definition: vc1dec.c:1196
uint8_t * mv_type_mb_plane
bitplane for mv_type == (4MV)
Definition: vc1.h:286
#define HWACCEL_VAAPI(codec)
Definition: hwaccel.h:73
int blocks_off
Definition: vc1.h:365
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:3753
uint8_t tff
Definition: vc1.h:312
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:309
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
the normal 219*2^(n-8) "MPEG" YUV ranges
Definition: pixfmt.h:522
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:3725
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:126
discard all non reference
Definition: avcodec.h:813
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:382
enum FrameCodingMode fcm
Frame decoding info for Advanced profile.
Definition: vc1.h:309
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:187
int pic_header_flag
Definition: vc1.h:370
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:796
void * priv_data
Definition: avcodec.h:1598
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:461
#define av_free(p)
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:447
AVFrame * sprite_output_frame
Definition: vc1.h:381
void ff_mpv_frame_end(MpegEncContext *s)
Definition: mpegvideo.c:1431
uint8_t zzi_8x8[64]
Definition: vc1.h:349
int16_t(* block)[64]
points to one of the following blocks
Definition: mpegvideo.h:508
AVCodec ff_vc1image_decoder
uint8_t rptfrm
Definition: vc1.h:312
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:373
H264ChromaContext h264chroma
Definition: vc1.h:176
int level
Advanced Profile.
Definition: vc1.h:197
#define av_freep(p)
#define HWACCEL_VDPAU(codec)
Definition: hwaccel.h:75
void INT64 start
Definition: avisynth_c.h:766
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:379
uint8_t * mv_f_next[2]
Definition: vc1.h:352
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:380
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:327
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: avcodec.h:1460
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:987
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:627
int output_height
Definition: vc1.h:382
static uint8_t tmp[11]
Definition: aes_ctr.c:26