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vc1dec.c
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1 /*
2  * VC-1 and WMV3 decoder
3  * Copyright (c) 2011 Mashiat Sarker Shakkhar
4  * Copyright (c) 2006-2007 Konstantin Shishkov
5  * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 /**
25  * @file
26  * VC-1 and WMV3 decoder
27  */
28 
29 #include "avcodec.h"
30 #include "blockdsp.h"
31 #include "get_bits.h"
32 #include "internal.h"
33 #include "mpeg_er.h"
34 #include "mpegvideo.h"
35 #include "msmpeg4.h"
36 #include "msmpeg4data.h"
37 #include "vc1.h"
38 #include "vc1data.h"
39 #include "vdpau_compat.h"
40 #include "libavutil/avassert.h"
41 
42 
43 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
44 
45 typedef struct SpriteData {
46  /**
47  * Transform coefficients for both sprites in 16.16 fixed point format,
48  * in the order they appear in the bitstream:
49  * x scale
50  * rotation 1 (unused)
51  * x offset
52  * rotation 2 (unused)
53  * y scale
54  * y offset
55  * alpha
56  */
57  int coefs[2][7];
58 
59  int effect_type, effect_flag;
60  int effect_pcount1, effect_pcount2; ///< amount of effect parameters stored in effect_params
61  int effect_params1[15], effect_params2[10]; ///< effect parameters in 16.16 fixed point format
62 } SpriteData;
63 
64 static inline int get_fp_val(GetBitContext* gb)
65 {
66  return (get_bits_long(gb, 30) - (1 << 29)) << 1;
67 }
68 
69 static void vc1_sprite_parse_transform(GetBitContext* gb, int c[7])
70 {
71  c[1] = c[3] = 0;
72 
73  switch (get_bits(gb, 2)) {
74  case 0:
75  c[0] = 1 << 16;
76  c[2] = get_fp_val(gb);
77  c[4] = 1 << 16;
78  break;
79  case 1:
80  c[0] = c[4] = get_fp_val(gb);
81  c[2] = get_fp_val(gb);
82  break;
83  case 2:
84  c[0] = get_fp_val(gb);
85  c[2] = get_fp_val(gb);
86  c[4] = get_fp_val(gb);
87  break;
88  case 3:
89  c[0] = get_fp_val(gb);
90  c[1] = get_fp_val(gb);
91  c[2] = get_fp_val(gb);
92  c[3] = get_fp_val(gb);
93  c[4] = get_fp_val(gb);
94  break;
95  }
96  c[5] = get_fp_val(gb);
97  if (get_bits1(gb))
98  c[6] = get_fp_val(gb);
99  else
100  c[6] = 1 << 16;
101 }
102 
103 static int vc1_parse_sprites(VC1Context *v, GetBitContext* gb, SpriteData* sd)
104 {
105  AVCodecContext *avctx = v->s.avctx;
106  int sprite, i;
107 
108  for (sprite = 0; sprite <= v->two_sprites; sprite++) {
109  vc1_sprite_parse_transform(gb, sd->coefs[sprite]);
110  if (sd->coefs[sprite][1] || sd->coefs[sprite][3])
111  avpriv_request_sample(avctx, "Non-zero rotation coefficients");
112  av_log(avctx, AV_LOG_DEBUG, sprite ? "S2:" : "S1:");
113  for (i = 0; i < 7; i++)
114  av_log(avctx, AV_LOG_DEBUG, " %d.%.3d",
115  sd->coefs[sprite][i] / (1<<16),
116  (abs(sd->coefs[sprite][i]) & 0xFFFF) * 1000 / (1 << 16));
117  av_log(avctx, AV_LOG_DEBUG, "\n");
118  }
119 
120  skip_bits(gb, 2);
121  if (sd->effect_type = get_bits_long(gb, 30)) {
122  switch (sd->effect_pcount1 = get_bits(gb, 4)) {
123  case 7:
124  vc1_sprite_parse_transform(gb, sd->effect_params1);
125  break;
126  case 14:
127  vc1_sprite_parse_transform(gb, sd->effect_params1);
128  vc1_sprite_parse_transform(gb, sd->effect_params1 + 7);
129  break;
130  default:
131  for (i = 0; i < sd->effect_pcount1; i++)
132  sd->effect_params1[i] = get_fp_val(gb);
133  }
134  if (sd->effect_type != 13 || sd->effect_params1[0] != sd->coefs[0][6]) {
135  // effect 13 is simple alpha blending and matches the opacity above
136  av_log(avctx, AV_LOG_DEBUG, "Effect: %d; params: ", sd->effect_type);
137  for (i = 0; i < sd->effect_pcount1; i++)
138  av_log(avctx, AV_LOG_DEBUG, " %d.%.2d",
139  sd->effect_params1[i] / (1 << 16),
140  (abs(sd->effect_params1[i]) & 0xFFFF) * 1000 / (1 << 16));
141  av_log(avctx, AV_LOG_DEBUG, "\n");
142  }
143 
144  sd->effect_pcount2 = get_bits(gb, 16);
145  if (sd->effect_pcount2 > 10) {
146  av_log(avctx, AV_LOG_ERROR, "Too many effect parameters\n");
147  return AVERROR_INVALIDDATA;
148  } else if (sd->effect_pcount2) {
149  i = -1;
150  av_log(avctx, AV_LOG_DEBUG, "Effect params 2: ");
151  while (++i < sd->effect_pcount2) {
152  sd->effect_params2[i] = get_fp_val(gb);
153  av_log(avctx, AV_LOG_DEBUG, " %d.%.2d",
154  sd->effect_params2[i] / (1 << 16),
155  (abs(sd->effect_params2[i]) & 0xFFFF) * 1000 / (1 << 16));
156  }
157  av_log(avctx, AV_LOG_DEBUG, "\n");
158  }
159  }
160  if (sd->effect_flag = get_bits1(gb))
161  av_log(avctx, AV_LOG_DEBUG, "Effect flag set\n");
162 
163  if (get_bits_count(gb) >= gb->size_in_bits +
164  (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE ? 64 : 0)) {
165  av_log(avctx, AV_LOG_ERROR, "Buffer overrun\n");
166  return AVERROR_INVALIDDATA;
167  }
168  if (get_bits_count(gb) < gb->size_in_bits - 8)
169  av_log(avctx, AV_LOG_WARNING, "Buffer not fully read\n");
170 
171  return 0;
172 }
173 
174 static void vc1_draw_sprites(VC1Context *v, SpriteData* sd)
175 {
176  int i, plane, row, sprite;
177  int sr_cache[2][2] = { { -1, -1 }, { -1, -1 } };
178  uint8_t* src_h[2][2];
179  int xoff[2], xadv[2], yoff[2], yadv[2], alpha;
180  int ysub[2];
181  MpegEncContext *s = &v->s;
182 
183  for (i = 0; i <= v->two_sprites; i++) {
184  xoff[i] = av_clip(sd->coefs[i][2], 0, v->sprite_width-1 << 16);
185  xadv[i] = sd->coefs[i][0];
186  if (xadv[i] != 1<<16 || (v->sprite_width << 16) - (v->output_width << 16) - xoff[i])
187  xadv[i] = av_clip(xadv[i], 0, ((v->sprite_width<<16) - xoff[i] - 1) / v->output_width);
188 
189  yoff[i] = av_clip(sd->coefs[i][5], 0, v->sprite_height-1 << 16);
190  yadv[i] = av_clip(sd->coefs[i][4], 0, ((v->sprite_height << 16) - yoff[i]) / v->output_height);
191  }
192  alpha = av_clip_uint16(sd->coefs[1][6]);
193 
194  for (plane = 0; plane < (CONFIG_GRAY && s->avctx->flags & AV_CODEC_FLAG_GRAY ? 1 : 3); plane++) {
195  int width = v->output_width>>!!plane;
196 
197  for (row = 0; row < v->output_height>>!!plane; row++) {
198  uint8_t *dst = v->sprite_output_frame->data[plane] +
200 
201  for (sprite = 0; sprite <= v->two_sprites; sprite++) {
202  uint8_t *iplane = s->current_picture.f->data[plane];
203  int iline = s->current_picture.f->linesize[plane];
204  int ycoord = yoff[sprite] + yadv[sprite] * row;
205  int yline = ycoord >> 16;
206  int next_line;
207  ysub[sprite] = ycoord & 0xFFFF;
208  if (sprite) {
209  iplane = s->last_picture.f->data[plane];
210  iline = s->last_picture.f->linesize[plane];
211  }
212  next_line = FFMIN(yline + 1, (v->sprite_height >> !!plane) - 1) * iline;
213  if (!(xoff[sprite] & 0xFFFF) && xadv[sprite] == 1 << 16) {
214  src_h[sprite][0] = iplane + (xoff[sprite] >> 16) + yline * iline;
215  if (ysub[sprite])
216  src_h[sprite][1] = iplane + (xoff[sprite] >> 16) + next_line;
217  } else {
218  if (sr_cache[sprite][0] != yline) {
219  if (sr_cache[sprite][1] == yline) {
220  FFSWAP(uint8_t*, v->sr_rows[sprite][0], v->sr_rows[sprite][1]);
221  FFSWAP(int, sr_cache[sprite][0], sr_cache[sprite][1]);
222  } else {
223  v->vc1dsp.sprite_h(v->sr_rows[sprite][0], iplane + yline * iline, xoff[sprite], xadv[sprite], width);
224  sr_cache[sprite][0] = yline;
225  }
226  }
227  if (ysub[sprite] && sr_cache[sprite][1] != yline + 1) {
228  v->vc1dsp.sprite_h(v->sr_rows[sprite][1],
229  iplane + next_line, xoff[sprite],
230  xadv[sprite], width);
231  sr_cache[sprite][1] = yline + 1;
232  }
233  src_h[sprite][0] = v->sr_rows[sprite][0];
234  src_h[sprite][1] = v->sr_rows[sprite][1];
235  }
236  }
237 
238  if (!v->two_sprites) {
239  if (ysub[0]) {
240  v->vc1dsp.sprite_v_single(dst, src_h[0][0], src_h[0][1], ysub[0], width);
241  } else {
242  memcpy(dst, src_h[0][0], width);
243  }
244  } else {
245  if (ysub[0] && ysub[1]) {
246  v->vc1dsp.sprite_v_double_twoscale(dst, src_h[0][0], src_h[0][1], ysub[0],
247  src_h[1][0], src_h[1][1], ysub[1], alpha, width);
248  } else if (ysub[0]) {
249  v->vc1dsp.sprite_v_double_onescale(dst, src_h[0][0], src_h[0][1], ysub[0],
250  src_h[1][0], alpha, width);
251  } else if (ysub[1]) {
252  v->vc1dsp.sprite_v_double_onescale(dst, src_h[1][0], src_h[1][1], ysub[1],
253  src_h[0][0], (1<<16)-1-alpha, width);
254  } else {
255  v->vc1dsp.sprite_v_double_noscale(dst, src_h[0][0], src_h[1][0], alpha, width);
256  }
257  }
258  }
259 
260  if (!plane) {
261  for (i = 0; i <= v->two_sprites; i++) {
262  xoff[i] >>= 1;
263  yoff[i] >>= 1;
264  }
265  }
266 
267  }
268 }
269 
270 
271 static int vc1_decode_sprites(VC1Context *v, GetBitContext* gb)
272 {
273  int ret;
274  MpegEncContext *s = &v->s;
275  AVCodecContext *avctx = s->avctx;
276  SpriteData sd;
277 
278  memset(&sd, 0, sizeof(sd));
279 
280  ret = vc1_parse_sprites(v, gb, &sd);
281  if (ret < 0)
282  return ret;
283 
284  if (!s->current_picture.f || !s->current_picture.f->data[0]) {
285  av_log(avctx, AV_LOG_ERROR, "Got no sprites\n");
286  return AVERROR_UNKNOWN;
287  }
288 
289  if (v->two_sprites && (!s->last_picture_ptr || !s->last_picture.f->data[0])) {
290  av_log(avctx, AV_LOG_WARNING, "Need two sprites, only got one\n");
291  v->two_sprites = 0;
292  }
293 
295  if ((ret = ff_get_buffer(avctx, v->sprite_output_frame, 0)) < 0)
296  return ret;
297 
298  vc1_draw_sprites(v, &sd);
299 
300  return 0;
301 }
302 
303 static void vc1_sprite_flush(AVCodecContext *avctx)
304 {
305  VC1Context *v = avctx->priv_data;
306  MpegEncContext *s = &v->s;
307  AVFrame *f = s->current_picture.f;
308  int plane, i;
309 
310  /* Windows Media Image codecs have a convergence interval of two keyframes.
311  Since we can't enforce it, clear to black the missing sprite. This is
312  wrong but it looks better than doing nothing. */
313 
314  if (f && f->data[0])
315  for (plane = 0; plane < (CONFIG_GRAY && s->avctx->flags & AV_CODEC_FLAG_GRAY ? 1 : 3); plane++)
316  for (i = 0; i < v->sprite_height>>!!plane; i++)
317  memset(f->data[plane] + i * f->linesize[plane],
318  plane ? 128 : 0, f->linesize[plane]);
319 }
320 
321 #endif
322 
324 {
325  MpegEncContext *s = &v->s;
326  int i;
327  int mb_height = FFALIGN(s->mb_height, 2);
328 
329  /* Allocate mb bitplanes */
330  v->mv_type_mb_plane = av_malloc (s->mb_stride * mb_height);
331  v->direct_mb_plane = av_malloc (s->mb_stride * mb_height);
332  v->forward_mb_plane = av_malloc (s->mb_stride * mb_height);
333  v->fieldtx_plane = av_mallocz(s->mb_stride * mb_height);
334  v->acpred_plane = av_malloc (s->mb_stride * mb_height);
335  v->over_flags_plane = av_malloc (s->mb_stride * mb_height);
336 
337  v->n_allocated_blks = s->mb_width + 2;
338  v->block = av_malloc(sizeof(*v->block) * v->n_allocated_blks);
339  v->cbp_base = av_malloc(sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
340  v->cbp = v->cbp_base + s->mb_stride;
341  v->ttblk_base = av_malloc(sizeof(v->ttblk_base[0]) * 2 * s->mb_stride);
342  v->ttblk = v->ttblk_base + s->mb_stride;
343  v->is_intra_base = av_mallocz(sizeof(v->is_intra_base[0]) * 2 * s->mb_stride);
344  v->is_intra = v->is_intra_base + s->mb_stride;
345  v->luma_mv_base = av_mallocz(sizeof(v->luma_mv_base[0]) * 2 * s->mb_stride);
346  v->luma_mv = v->luma_mv_base + s->mb_stride;
347 
348  /* allocate block type info in that way so it could be used with s->block_index[] */
349  v->mb_type_base = av_malloc(s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
350  v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
351  v->mb_type[1] = v->mb_type_base + s->b8_stride * (mb_height * 2 + 1) + s->mb_stride + 1;
352  v->mb_type[2] = v->mb_type[1] + s->mb_stride * (mb_height + 1);
353 
354  /* allocate memory to store block level MV info */
355  v->blk_mv_type_base = av_mallocz( s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
356  v->blk_mv_type = v->blk_mv_type_base + s->b8_stride + 1;
357  v->mv_f_base = av_mallocz(2 * (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2));
358  v->mv_f[0] = v->mv_f_base + s->b8_stride + 1;
359  v->mv_f[1] = v->mv_f[0] + (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
360  v->mv_f_next_base = av_mallocz(2 * (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2));
361  v->mv_f_next[0] = v->mv_f_next_base + s->b8_stride + 1;
362  v->mv_f_next[1] = v->mv_f_next[0] + (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
363 
364  /* Init coded blocks info */
365  if (v->profile == PROFILE_ADVANCED) {
366 // if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
367 // return -1;
368 // if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
369 // return -1;
370  }
371 
372  ff_intrax8_common_init(&v->x8,s);
373 
375  for (i = 0; i < 4; i++)
376  if (!(v->sr_rows[i >> 1][i & 1] = av_malloc(v->output_width)))
377  return AVERROR(ENOMEM);
378  }
379 
380  if (!v->mv_type_mb_plane || !v->direct_mb_plane || !v->acpred_plane || !v->over_flags_plane ||
381  !v->block || !v->cbp_base || !v->ttblk_base || !v->is_intra_base || !v->luma_mv_base ||
382  !v->mb_type_base) {
385  av_freep(&v->acpred_plane);
387  av_freep(&v->block);
388  av_freep(&v->cbp_base);
389  av_freep(&v->ttblk_base);
390  av_freep(&v->is_intra_base);
391  av_freep(&v->luma_mv_base);
392  av_freep(&v->mb_type_base);
393  return AVERROR(ENOMEM);
394  }
395 
396  return 0;
397 }
398 
400 {
401  int i;
402  for (i = 0; i < 64; i++) {
403 #define transpose(x) (((x) >> 3) | (((x) & 7) << 3))
404  v->zz_8x8[0][i] = transpose(ff_wmv1_scantable[0][i]);
405  v->zz_8x8[1][i] = transpose(ff_wmv1_scantable[1][i]);
406  v->zz_8x8[2][i] = transpose(ff_wmv1_scantable[2][i]);
407  v->zz_8x8[3][i] = transpose(ff_wmv1_scantable[3][i]);
409  }
410  v->left_blk_sh = 0;
411  v->top_blk_sh = 3;
412 }
413 
414 /** Initialize a VC1/WMV3 decoder
415  * @todo TODO: Handle VC-1 IDUs (Transport level?)
416  * @todo TODO: Decypher remaining bits in extra_data
417  */
419 {
420  VC1Context *v = avctx->priv_data;
421  MpegEncContext *s = &v->s;
422  GetBitContext gb;
423  int ret;
424 
425  /* save the container output size for WMImage */
426  v->output_width = avctx->width;
427  v->output_height = avctx->height;
428 
429  if (!avctx->extradata_size || !avctx->extradata)
430  return -1;
431  v->s.avctx = avctx;
432 
433  if ((ret = ff_vc1_init_common(v)) < 0)
434  return ret;
435 
436  if (avctx->codec_id == AV_CODEC_ID_WMV3 || avctx->codec_id == AV_CODEC_ID_WMV3IMAGE) {
437  int count = 0;
438 
439  // looks like WMV3 has a sequence header stored in the extradata
440  // advanced sequence header may be before the first frame
441  // the last byte of the extradata is a version number, 1 for the
442  // samples we can decode
443 
444  init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
445 
446  if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0)
447  return ret;
448 
449  count = avctx->extradata_size*8 - get_bits_count(&gb);
450  if (count > 0) {
451  av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
452  count, get_bits_long(&gb, FFMIN(count, 32)));
453  } else if (count < 0) {
454  av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
455  }
456  } else { // VC1/WVC1/WVP2
457  const uint8_t *start = avctx->extradata;
458  uint8_t *end = avctx->extradata + avctx->extradata_size;
459  const uint8_t *next;
460  int size, buf2_size;
461  uint8_t *buf2 = NULL;
462  int seq_initialized = 0, ep_initialized = 0;
463 
464  if (avctx->extradata_size < 16) {
465  av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
466  return -1;
467  }
468 
470  if (!buf2)
471  return AVERROR(ENOMEM);
472 
473  start = find_next_marker(start, end); // in WVC1 extradata first byte is its size, but can be 0 in mkv
474  next = start;
475  for (; next < end; start = next) {
476  next = find_next_marker(start + 4, end);
477  size = next - start - 4;
478  if (size <= 0)
479  continue;
480  buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
481  init_get_bits(&gb, buf2, buf2_size * 8);
482  switch (AV_RB32(start)) {
483  case VC1_CODE_SEQHDR:
484  if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0) {
485  av_free(buf2);
486  return ret;
487  }
488  seq_initialized = 1;
489  break;
490  case VC1_CODE_ENTRYPOINT:
491  if ((ret = ff_vc1_decode_entry_point(avctx, v, &gb)) < 0) {
492  av_free(buf2);
493  return ret;
494  }
495  ep_initialized = 1;
496  break;
497  }
498  }
499  av_free(buf2);
500  if (!seq_initialized || !ep_initialized) {
501  av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
502  return -1;
503  }
504  v->res_sprite = (avctx->codec_id == AV_CODEC_ID_VC1IMAGE);
505  }
506 
507  avctx->profile = v->profile;
508  if (v->profile == PROFILE_ADVANCED)
509  avctx->level = v->level;
510 
511  if (!CONFIG_GRAY || !(avctx->flags & AV_CODEC_FLAG_GRAY))
512  avctx->pix_fmt = ff_get_format(avctx, avctx->codec->pix_fmts);
513  else {
514  avctx->pix_fmt = AV_PIX_FMT_GRAY8;
515  if (avctx->color_range == AVCOL_RANGE_UNSPECIFIED)
516  avctx->color_range = AVCOL_RANGE_MPEG;
517  }
518 
519  // ensure static VLC tables are initialized
520  if ((ret = ff_msmpeg4_decode_init(avctx)) < 0)
521  return ret;
522  if ((ret = ff_vc1_decode_init_alloc_tables(v)) < 0)
523  return ret;
524  // Hack to ensure the above functions will be called
525  // again once we know all necessary settings.
526  // That this is necessary might indicate a bug.
527  ff_vc1_decode_end(avctx);
528 
529  ff_blockdsp_init(&s->bdsp, avctx);
531  ff_qpeldsp_init(&s->qdsp);
532 
533  // Must happen after calling ff_vc1_decode_end
534  // to avoid de-allocating the sprite_output_frame
536  if (!v->sprite_output_frame)
537  return AVERROR(ENOMEM);
538 
539  avctx->has_b_frames = !!avctx->max_b_frames;
540 
541  if (v->color_prim == 1 || v->color_prim == 5 || v->color_prim == 6)
542  avctx->color_primaries = v->color_prim;
543  if (v->transfer_char == 1 || v->transfer_char == 7)
544  avctx->color_trc = v->transfer_char;
545  if (v->matrix_coef == 1 || v->matrix_coef == 6 || v->matrix_coef == 7)
546  avctx->colorspace = v->matrix_coef;
547 
548  s->mb_width = (avctx->coded_width + 15) >> 4;
549  s->mb_height = (avctx->coded_height + 15) >> 4;
550 
551  if (v->profile == PROFILE_ADVANCED || v->res_fasttx) {
553  } else {
554  memcpy(v->zz_8x8, ff_wmv1_scantable, 4*64);
555  v->left_blk_sh = 3;
556  v->top_blk_sh = 0;
557  }
558 
559  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
560  v->sprite_width = avctx->coded_width;
561  v->sprite_height = avctx->coded_height;
562 
563  avctx->coded_width = avctx->width = v->output_width;
564  avctx->coded_height = avctx->height = v->output_height;
565 
566  // prevent 16.16 overflows
567  if (v->sprite_width > 1 << 14 ||
568  v->sprite_height > 1 << 14 ||
569  v->output_width > 1 << 14 ||
570  v->output_height > 1 << 14) return -1;
571 
572  if ((v->sprite_width&1) || (v->sprite_height&1)) {
573  avpriv_request_sample(avctx, "odd sprites support");
574  return AVERROR_PATCHWELCOME;
575  }
576  }
577  return 0;
578 }
579 
580 /** Close a VC1/WMV3 decoder
581  * @warning Initial try at using MpegEncContext stuff
582  */
584 {
585  VC1Context *v = avctx->priv_data;
586  int i;
587 
589 
590  for (i = 0; i < 4; i++)
591  av_freep(&v->sr_rows[i >> 1][i & 1]);
592  av_freep(&v->hrd_rate);
593  av_freep(&v->hrd_buffer);
594  ff_mpv_common_end(&v->s);
598  av_freep(&v->fieldtx_plane);
599  av_freep(&v->acpred_plane);
601  av_freep(&v->mb_type_base);
603  av_freep(&v->mv_f_base);
605  av_freep(&v->block);
606  av_freep(&v->cbp_base);
607  av_freep(&v->ttblk_base);
608  av_freep(&v->is_intra_base); // FIXME use v->mb_type[]
609  av_freep(&v->luma_mv_base);
611  return 0;
612 }
613 
614 
615 /** Decode a VC1/WMV3 frame
616  * @todo TODO: Handle VC-1 IDUs (Transport level?)
617  */
618 static int vc1_decode_frame(AVCodecContext *avctx, void *data,
619  int *got_frame, AVPacket *avpkt)
620 {
621  const uint8_t *buf = avpkt->data;
622  int buf_size = avpkt->size, n_slices = 0, i, ret;
623  VC1Context *v = avctx->priv_data;
624  MpegEncContext *s = &v->s;
625  AVFrame *pict = data;
626  uint8_t *buf2 = NULL;
627  const uint8_t *buf_start = buf, *buf_start_second_field = NULL;
628  int mb_height, n_slices1=-1;
629  struct {
630  uint8_t *buf;
631  GetBitContext gb;
632  int mby_start;
633  } *slices = NULL, *tmp;
634 
635  v->second_field = 0;
636 
638  s->low_delay = 1;
639 
640  /* no supplementary picture */
641  if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == VC1_CODE_ENDOFSEQ)) {
642  /* special case for last picture */
643  if (s->low_delay == 0 && s->next_picture_ptr) {
644  if ((ret = av_frame_ref(pict, s->next_picture_ptr->f)) < 0)
645  return ret;
646  s->next_picture_ptr = NULL;
647 
648  *got_frame = 1;
649  }
650 
651  return buf_size;
652  }
653 
654 #if FF_API_CAP_VDPAU
656  if (v->profile < PROFILE_ADVANCED)
658  else
659  avctx->pix_fmt = AV_PIX_FMT_VDPAU_VC1;
660  }
661 #endif
662 
663  //for advanced profile we may need to parse and unescape data
664  if (avctx->codec_id == AV_CODEC_ID_VC1 || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
665  int buf_size2 = 0;
666  buf2 = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
667  if (!buf2)
668  return AVERROR(ENOMEM);
669 
670  if (IS_MARKER(AV_RB32(buf))) { /* frame starts with marker and needs to be parsed */
671  const uint8_t *start, *end, *next;
672  int size;
673 
674  next = buf;
675  for (start = buf, end = buf + buf_size; next < end; start = next) {
676  next = find_next_marker(start + 4, end);
677  size = next - start - 4;
678  if (size <= 0) continue;
679  switch (AV_RB32(start)) {
680  case VC1_CODE_FRAME:
681  if (avctx->hwaccel
684 #endif
685  )
686  buf_start = start;
687  buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
688  break;
689  case VC1_CODE_FIELD: {
690  int buf_size3;
691  if (avctx->hwaccel
694 #endif
695  )
696  buf_start_second_field = start;
697  tmp = av_realloc_array(slices, sizeof(*slices), (n_slices+1));
698  if (!tmp) {
699  ret = AVERROR(ENOMEM);
700  goto err;
701  }
702  slices = tmp;
703  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
704  if (!slices[n_slices].buf) {
705  ret = AVERROR(ENOMEM);
706  goto err;
707  }
708  buf_size3 = vc1_unescape_buffer(start + 4, size,
709  slices[n_slices].buf);
710  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
711  buf_size3 << 3);
712  /* assuming that the field marker is at the exact middle,
713  hope it's correct */
714  slices[n_slices].mby_start = s->mb_height + 1 >> 1;
715  n_slices1 = n_slices - 1; // index of the last slice of the first field
716  n_slices++;
717  break;
718  }
719  case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
720  buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
721  init_get_bits(&s->gb, buf2, buf_size2 * 8);
722  ff_vc1_decode_entry_point(avctx, v, &s->gb);
723  break;
724  case VC1_CODE_SLICE: {
725  int buf_size3;
726  tmp = av_realloc_array(slices, sizeof(*slices), (n_slices+1));
727  if (!tmp) {
728  ret = AVERROR(ENOMEM);
729  goto err;
730  }
731  slices = tmp;
732  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
733  if (!slices[n_slices].buf) {
734  ret = AVERROR(ENOMEM);
735  goto err;
736  }
737  buf_size3 = vc1_unescape_buffer(start + 4, size,
738  slices[n_slices].buf);
739  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
740  buf_size3 << 3);
741  slices[n_slices].mby_start = get_bits(&slices[n_slices].gb, 9);
742  n_slices++;
743  break;
744  }
745  }
746  }
747  } else if (v->interlace && ((buf[0] & 0xC0) == 0xC0)) { /* WVC1 interlaced stores both fields divided by marker */
748  const uint8_t *divider;
749  int buf_size3;
750 
751  divider = find_next_marker(buf, buf + buf_size);
752  if ((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD) {
753  av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
754  ret = AVERROR_INVALIDDATA;
755  goto err;
756  } else { // found field marker, unescape second field
757  if (avctx->hwaccel
760 #endif
761  )
762  buf_start_second_field = divider;
763  tmp = av_realloc_array(slices, sizeof(*slices), (n_slices+1));
764  if (!tmp) {
765  ret = AVERROR(ENOMEM);
766  goto err;
767  }
768  slices = tmp;
769  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
770  if (!slices[n_slices].buf) {
771  ret = AVERROR(ENOMEM);
772  goto err;
773  }
774  buf_size3 = vc1_unescape_buffer(divider + 4, buf + buf_size - divider - 4, slices[n_slices].buf);
775  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
776  buf_size3 << 3);
777  slices[n_slices].mby_start = s->mb_height + 1 >> 1;
778  n_slices1 = n_slices - 1;
779  n_slices++;
780  }
781  buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
782  } else {
783  buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
784  }
785  init_get_bits(&s->gb, buf2, buf_size2*8);
786  } else
787  init_get_bits(&s->gb, buf, buf_size*8);
788 
789  if (v->res_sprite) {
790  v->new_sprite = !get_bits1(&s->gb);
791  v->two_sprites = get_bits1(&s->gb);
792  /* res_sprite means a Windows Media Image stream, AV_CODEC_ID_*IMAGE means
793  we're using the sprite compositor. These are intentionally kept separate
794  so you can get the raw sprites by using the wmv3 decoder for WMVP or
795  the vc1 one for WVP2 */
796  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
797  if (v->new_sprite) {
798  // switch AVCodecContext parameters to those of the sprites
799  avctx->width = avctx->coded_width = v->sprite_width;
800  avctx->height = avctx->coded_height = v->sprite_height;
801  } else {
802  goto image;
803  }
804  }
805  }
806 
807  if (s->context_initialized &&
808  (s->width != avctx->coded_width ||
809  s->height != avctx->coded_height)) {
810  ff_vc1_decode_end(avctx);
811  }
812 
813  if (!s->context_initialized) {
814  if ((ret = ff_msmpeg4_decode_init(avctx)) < 0)
815  goto err;
816  if ((ret = ff_vc1_decode_init_alloc_tables(v)) < 0) {
818  goto err;
819  }
820 
821  s->low_delay = !avctx->has_b_frames || v->res_sprite;
822 
823  if (v->profile == PROFILE_ADVANCED) {
824  if(avctx->coded_width<=1 || avctx->coded_height<=1) {
825  ret = AVERROR_INVALIDDATA;
826  goto err;
827  }
828  s->h_edge_pos = avctx->coded_width;
829  s->v_edge_pos = avctx->coded_height;
830  }
831  }
832 
833  // do parse frame header
834  v->pic_header_flag = 0;
835  v->first_pic_header_flag = 1;
836  if (v->profile < PROFILE_ADVANCED) {
837  if ((ret = ff_vc1_parse_frame_header(v, &s->gb)) < 0) {
838  goto err;
839  }
840  } else {
841  if ((ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
842  goto err;
843  }
844  }
845  v->first_pic_header_flag = 0;
846 
847  if (avctx->debug & FF_DEBUG_PICT_INFO)
848  av_log(v->s.avctx, AV_LOG_DEBUG, "pict_type: %c\n", av_get_picture_type_char(s->pict_type));
849 
850  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
851  && s->pict_type != AV_PICTURE_TYPE_I) {
852  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected I-frame\n");
853  ret = AVERROR_INVALIDDATA;
854  goto err;
855  }
856 
857  if ((s->mb_height >> v->field_mode) == 0) {
858  av_log(v->s.avctx, AV_LOG_ERROR, "image too short\n");
859  ret = AVERROR_INVALIDDATA;
860  goto err;
861  }
862 
863  // for skipping the frame
866 
867  /* skip B-frames if we don't have reference frames */
868  if (!s->last_picture_ptr && (s->pict_type == AV_PICTURE_TYPE_B || s->droppable)) {
869  av_log(v->s.avctx, AV_LOG_DEBUG, "Skipping B frame without reference frames\n");
870  goto end;
871  }
872  if ((avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B) ||
874  avctx->skip_frame >= AVDISCARD_ALL) {
875  goto end;
876  }
877 
878  if (s->next_p_frame_damaged) {
879  if (s->pict_type == AV_PICTURE_TYPE_B)
880  goto end;
881  else
882  s->next_p_frame_damaged = 0;
883  }
884 
885  if ((ret = ff_mpv_frame_start(s, avctx)) < 0) {
886  goto err;
887  }
888 
892 
893  // process pulldown flags
895  // Pulldown flags are only valid when 'broadcast' has been set.
896  // So ticks_per_frame will be 2
897  if (v->rff) {
898  // repeat field
900  } else if (v->rptfrm) {
901  // repeat frames
902  s->current_picture_ptr->f->repeat_pict = v->rptfrm * 2;
903  }
904 
907 
908 #if FF_API_CAP_VDPAU
909  if ((CONFIG_VC1_VDPAU_DECODER)
911  if (v->field_mode && buf_start_second_field) {
912  ff_vdpau_vc1_decode_picture(s, buf_start, buf_start_second_field - buf_start);
913  ff_vdpau_vc1_decode_picture(s, buf_start_second_field, (buf + buf_size) - buf_start_second_field);
914  } else {
915  ff_vdpau_vc1_decode_picture(s, buf_start, (buf + buf_size) - buf_start);
916  }
917  } else
918 #endif
919  if (avctx->hwaccel) {
920  if (v->field_mode && buf_start_second_field) {
921  // decode first field
923  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start, buf_start_second_field - buf_start)) < 0)
924  goto err;
925  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, buf_start_second_field - buf_start)) < 0)
926  goto err;
927  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
928  goto err;
929 
930  // decode second field
931  s->gb = slices[n_slices1 + 1].gb;
933  v->second_field = 1;
934  v->pic_header_flag = 0;
935  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
936  av_log(avctx, AV_LOG_ERROR, "parsing header for second field failed");
937  ret = AVERROR_INVALIDDATA;
938  goto err;
939  }
941 
942  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start_second_field, (buf + buf_size) - buf_start_second_field)) < 0)
943  goto err;
944  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start_second_field, (buf + buf_size) - buf_start_second_field)) < 0)
945  goto err;
946  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
947  goto err;
948  } else {
950  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start, (buf + buf_size) - buf_start)) < 0)
951  goto err;
952  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, (buf + buf_size) - buf_start)) < 0)
953  goto err;
954  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
955  goto err;
956  }
957  } else {
958  int header_ret = 0;
959 
961 
962  v->bits = buf_size * 8;
963  v->end_mb_x = s->mb_width;
964  if (v->field_mode) {
965  s->current_picture.f->linesize[0] <<= 1;
966  s->current_picture.f->linesize[1] <<= 1;
967  s->current_picture.f->linesize[2] <<= 1;
968  s->linesize <<= 1;
969  s->uvlinesize <<= 1;
970  }
971  mb_height = s->mb_height >> v->field_mode;
972 
973  av_assert0 (mb_height > 0);
974 
975  for (i = 0; i <= n_slices; i++) {
976  if (i > 0 && slices[i - 1].mby_start >= mb_height) {
977  if (v->field_mode <= 0) {
978  av_log(v->s.avctx, AV_LOG_ERROR, "Slice %d starts beyond "
979  "picture boundary (%d >= %d)\n", i,
980  slices[i - 1].mby_start, mb_height);
981  continue;
982  }
983  v->second_field = 1;
984  av_assert0((s->mb_height & 1) == 0);
985  v->blocks_off = s->b8_stride * (s->mb_height&~1);
986  v->mb_off = s->mb_stride * s->mb_height >> 1;
987  } else {
988  v->second_field = 0;
989  v->blocks_off = 0;
990  v->mb_off = 0;
991  }
992  if (i) {
993  v->pic_header_flag = 0;
994  if (v->field_mode && i == n_slices1 + 2) {
995  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
996  av_log(v->s.avctx, AV_LOG_ERROR, "Field header damaged\n");
997  ret = AVERROR_INVALIDDATA;
998  if (avctx->err_recognition & AV_EF_EXPLODE)
999  goto err;
1000  continue;
1001  }
1002  } else if (get_bits1(&s->gb)) {
1003  v->pic_header_flag = 1;
1004  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1005  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1006  ret = AVERROR_INVALIDDATA;
1007  if (avctx->err_recognition & AV_EF_EXPLODE)
1008  goto err;
1009  continue;
1010  }
1011  }
1012  }
1013  if (header_ret < 0)
1014  continue;
1015  s->start_mb_y = (i == 0) ? 0 : FFMAX(0, slices[i-1].mby_start % mb_height);
1016  if (!v->field_mode || v->second_field)
1017  s->end_mb_y = (i == n_slices ) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1018  else {
1019  if (i >= n_slices) {
1020  av_log(v->s.avctx, AV_LOG_ERROR, "first field slice count too large\n");
1021  continue;
1022  }
1023  s->end_mb_y = (i <= n_slices1 + 1) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1024  }
1025  if (s->end_mb_y <= s->start_mb_y) {
1026  av_log(v->s.avctx, AV_LOG_ERROR, "end mb y %d %d invalid\n", s->end_mb_y, s->start_mb_y);
1027  continue;
1028  }
1029  if (!v->p_frame_skipped && s->pict_type != AV_PICTURE_TYPE_I && !v->cbpcy_vlc) {
1030  av_log(v->s.avctx, AV_LOG_ERROR, "missing cbpcy_vlc\n");
1031  continue;
1032  }
1034  if (i != n_slices)
1035  s->gb = slices[i].gb;
1036  }
1037  if (v->field_mode) {
1038  v->second_field = 0;
1039  s->current_picture.f->linesize[0] >>= 1;
1040  s->current_picture.f->linesize[1] >>= 1;
1041  s->current_picture.f->linesize[2] >>= 1;
1042  s->linesize >>= 1;
1043  s->uvlinesize >>= 1;
1045  FFSWAP(uint8_t *, v->mv_f_next[0], v->mv_f[0]);
1046  FFSWAP(uint8_t *, v->mv_f_next[1], v->mv_f[1]);
1047  }
1048  }
1049  ff_dlog(s->avctx, "Consumed %i/%i bits\n",
1050  get_bits_count(&s->gb), s->gb.size_in_bits);
1051 // if (get_bits_count(&s->gb) > buf_size * 8)
1052 // return -1;
1053  if(s->er.error_occurred && s->pict_type == AV_PICTURE_TYPE_B) {
1054  ret = AVERROR_INVALIDDATA;
1055  goto err;
1056  }
1057  if (!v->field_mode)
1058  ff_er_frame_end(&s->er);
1059  }
1060 
1061  ff_mpv_frame_end(s);
1062 
1063  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
1064 image:
1065  avctx->width = avctx->coded_width = v->output_width;
1066  avctx->height = avctx->coded_height = v->output_height;
1067  if (avctx->skip_frame >= AVDISCARD_NONREF)
1068  goto end;
1069 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
1070  if ((ret = vc1_decode_sprites(v, &s->gb)) < 0)
1071  goto err;
1072 #endif
1073  if ((ret = av_frame_ref(pict, v->sprite_output_frame)) < 0)
1074  goto err;
1075  *got_frame = 1;
1076  } else {
1077  if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
1078  if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
1079  goto err;
1081  *got_frame = 1;
1082  } else if (s->last_picture_ptr) {
1083  if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
1084  goto err;
1086  *got_frame = 1;
1087  }
1088  }
1089 
1090 end:
1091  av_free(buf2);
1092  for (i = 0; i < n_slices; i++)
1093  av_free(slices[i].buf);
1094  av_free(slices);
1095  return buf_size;
1096 
1097 err:
1098  av_free(buf2);
1099  for (i = 0; i < n_slices; i++)
1100  av_free(slices[i].buf);
1101  av_free(slices);
1102  return ret;
1103 }
1104 
1105 
1106 static const AVProfile profiles[] = {
1107  { FF_PROFILE_VC1_SIMPLE, "Simple" },
1108  { FF_PROFILE_VC1_MAIN, "Main" },
1109  { FF_PROFILE_VC1_COMPLEX, "Complex" },
1110  { FF_PROFILE_VC1_ADVANCED, "Advanced" },
1111  { FF_PROFILE_UNKNOWN },
1112 };
1113 
1115 #if CONFIG_VC1_DXVA2_HWACCEL
1117 #endif
1118 #if CONFIG_VC1_D3D11VA_HWACCEL
1120 #endif
1121 #if CONFIG_VC1_VAAPI_HWACCEL
1123 #endif
1124 #if CONFIG_VC1_VDPAU_HWACCEL
1126 #endif
1129 };
1130 
1132  .name = "vc1",
1133  .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"),
1134  .type = AVMEDIA_TYPE_VIDEO,
1135  .id = AV_CODEC_ID_VC1,
1136  .priv_data_size = sizeof(VC1Context),
1137  .init = vc1_decode_init,
1138  .close = ff_vc1_decode_end,
1140  .flush = ff_mpeg_flush,
1141  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1142  .pix_fmts = vc1_hwaccel_pixfmt_list_420,
1143  .profiles = NULL_IF_CONFIG_SMALL(profiles)
1144 };
1145 
1146 #if CONFIG_WMV3_DECODER
1147 AVCodec ff_wmv3_decoder = {
1148  .name = "wmv3",
1149  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9"),
1150  .type = AVMEDIA_TYPE_VIDEO,
1151  .id = AV_CODEC_ID_WMV3,
1152  .priv_data_size = sizeof(VC1Context),
1153  .init = vc1_decode_init,
1154  .close = ff_vc1_decode_end,
1156  .flush = ff_mpeg_flush,
1157  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1158  .pix_fmts = vc1_hwaccel_pixfmt_list_420,
1159  .profiles = NULL_IF_CONFIG_SMALL(profiles)
1160 };
1161 #endif
1162 
1163 #if CONFIG_WMV3_VDPAU_DECODER && FF_API_VDPAU
1164 AVCodec ff_wmv3_vdpau_decoder = {
1165  .name = "wmv3_vdpau",
1166  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 VDPAU"),
1167  .type = AVMEDIA_TYPE_VIDEO,
1168  .id = AV_CODEC_ID_WMV3,
1169  .priv_data_size = sizeof(VC1Context),
1170  .init = vc1_decode_init,
1171  .close = ff_vc1_decode_end,
1175  .profiles = NULL_IF_CONFIG_SMALL(profiles)
1176 };
1177 #endif
1178 
1179 #if CONFIG_VC1_VDPAU_DECODER && FF_API_VDPAU
1180 AVCodec ff_vc1_vdpau_decoder = {
1181  .name = "vc1_vdpau",
1182  .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1 VDPAU"),
1183  .type = AVMEDIA_TYPE_VIDEO,
1184  .id = AV_CODEC_ID_VC1,
1185  .priv_data_size = sizeof(VC1Context),
1186  .init = vc1_decode_init,
1187  .close = ff_vc1_decode_end,
1191  .profiles = NULL_IF_CONFIG_SMALL(profiles)
1192 };
1193 #endif
1194 
1195 #if CONFIG_WMV3IMAGE_DECODER
1196 AVCodec ff_wmv3image_decoder = {
1197  .name = "wmv3image",
1198  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 Image"),
1199  .type = AVMEDIA_TYPE_VIDEO,
1200  .id = AV_CODEC_ID_WMV3IMAGE,
1201  .priv_data_size = sizeof(VC1Context),
1202  .init = vc1_decode_init,
1203  .close = ff_vc1_decode_end,
1205  .capabilities = AV_CODEC_CAP_DR1,
1206  .flush = vc1_sprite_flush,
1207  .pix_fmts = (const enum AVPixelFormat[]) {
1210  },
1211 };
1212 #endif
1213 
1214 #if CONFIG_VC1IMAGE_DECODER
1215 AVCodec ff_vc1image_decoder = {
1216  .name = "vc1image",
1217  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 Image v2"),
1218  .type = AVMEDIA_TYPE_VIDEO,
1219  .id = AV_CODEC_ID_VC1IMAGE,
1220  .priv_data_size = sizeof(VC1Context),
1221  .init = vc1_decode_init,
1222  .close = ff_vc1_decode_end,
1224  .capabilities = AV_CODEC_CAP_DR1,
1225  .flush = vc1_sprite_flush,
1226  .pix_fmts = (const enum AVPixelFormat[]) {
1229  },
1230 };
1231 #endif
int color_prim
8bits, 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:291
#define NULL
Definition: coverity.c:32
const struct AVCodec * codec
Definition: avcodec.h:1471
discard all frames except keyframes
Definition: avcodec.h:672
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:3478
BI type.
Definition: avutil.h:272
float v
qpel_mc_func avg_qpel_pixels_tab[2][16]
Definition: qpeldsp.h:74
int p_frame_skipped
Definition: vc1.h:380
const char * s
Definition: avisynth_c.h:631
#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:171
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
int start_mb_y
start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
Definition: mpegvideo.h:150
static void flush(AVCodecContext *avctx)
uint8_t * mv_f_base
Definition: vc1.h:350
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1656
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:260
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
int ff_msmpeg4_decode_init(AVCodecContext *avctx)
Definition: msmpeg4dec.c:288
int end_mb_y
end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
Definition: mpegvideo.h:151
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int max_b_frames
maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 re...
Definition: avcodec.h:1740
int v_edge_pos
horizontal / vertical position of the right/bottom edge (pixel replication)
Definition: mpegvideo.h:129
void ff_er_frame_end(ERContext *s)
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:71
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:2197
int repeat_pict
When decoding, this signals how much the picture must be delayed.
Definition: frame.h:297
int size
Definition: avcodec.h:1398
int transfer_char
8bits, Opto-electronic transfer characteristics
Definition: vc1.h:207
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:1682
uint8_t zz_8x8[4][64]
Zigzag table for TT_8x8, permuted for IDCT.
Definition: vc1.h:239
av_cold void ff_h264chroma_init(H264ChromaContext *c, int bit_depth)
Definition: h264chroma.c:41
mpegvideo header.
IntraX8Context x8
Definition: vc1.h:175
uint8_t * mb_type_base
Definition: vc1.h:264
discard all
Definition: avcodec.h:673
uint8_t * mv_f[2]
0: MV obtained from same field, 1: opposite field
Definition: vc1.h:350
int sprite_height
Definition: vc1.h:376
int end_mb_x
Horizontal macroblock limit (used only by mss2)
Definition: vc1.h:393
int profile
profile
Definition: avcodec.h:2961
QpelDSPContext qdsp
Definition: mpegvideo.h:232
AVCodec.
Definition: avcodec.h:3310
#define FFALIGN(x, a)
Definition: common.h:86
uint8_t rff
Definition: vc1.h:311
enum AVDiscard skip_frame
Skip decoding for selected frames.
Definition: avcodec.h:3072
int bits
Definition: vc1.h:179
struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2776
#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:866
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
uint8_t * acpred_plane
AC prediction flags bitplane.
Definition: vc1.h:321
VC-1 tables.
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
static const AVProfile profiles[]
Definition: vc1dec.c:1106
int matrix_coef
8bits, 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:141
int first_pic_header_flag
Definition: vc1.h:368
uint16_t * hrd_rate
Definition: vc1.h:326
av_cold int ff_vc1_init_common(VC1Context *v)
Init VC-1 specific tables and VC1Context members.
Definition: vc1.c:1576
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:73
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:2697
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
int interlace
Progressive/interlaced (RPTFTM syntax element)
Definition: vc1.h:201
int second_field
Definition: vc1.h:354
int n_allocated_blks
Definition: vc1.h:385
qpel_mc_func(* qpel_put)[16]
Definition: motion_est.h:86
#define AV_CODEC_FLAG_LOW_DELAY
Force low delay.
Definition: avcodec.h:764
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:374
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1577
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:177
int16_t((* luma_mv)[2]
Definition: vc1.h:388
#define FF_API_CAP_VDPAU
Definition: version.h:71
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:1397
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:212
char av_get_picture_type_char(enum AVPictureType pict_type)
Return a single letter to describe the given picture type pict_type.
Definition: utils.c:91
#define AV_CODEC_CAP_HWACCEL_VDPAU
Codec can export data for HW decoding (VDPAU).
Definition: avcodec.h:877
#define ff_dlog(a,...)
bitstream reader API header.
uint8_t * forward_mb_plane
bitplane for "forward" MBs
Definition: vc1.h:288
WMV3 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstrea...
Definition: pixfmt.h:108
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:302
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:126
ptrdiff_t size
Definition: opengl_enc.c:101
int ff_vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
Decode Simple/Main Profiles sequence header.
Definition: vc1.c:277
uint8_t * over_flags_plane
Overflags bitplane.
Definition: vc1.h:323
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:747
#define av_log(a,...)
#define transpose(x)
int16_t(* block)[6][64]
Definition: vc1.h:384
static double alpha(void *priv, double x, double y)
Definition: vf_geq.c:99
#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:1772
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:154
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
ERContext er
Definition: mpegvideo.h:544
static av_cold int vc1_decode_init(AVCodecContext *avctx)
Initialize a VC1/WMV3 decoder.
Definition: vc1dec.c:418
int capabilities
Codec capabilities.
Definition: avcodec.h:3329
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
#define IS_MARKER(state)
Definition: dca_parser.c:45
uint8_t * mv_f_next_base
Definition: vc1.h:351
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1557
simple assert() macros that are a bit more flexible than ISO C assert().
void ff_vc1_decode_blocks(VC1Context *v)
Definition: vc1_block.c:2929
#define PICT_TOP_FIELD
Definition: mpegutils.h:37
const char * name
Name of the codec implementation.
Definition: avcodec.h:3317
int low_delay
no reordering needed / has no b-frames
Definition: mpegvideo.h:402
qpel_mc_func put_qpel_pixels_tab[2][16]
Definition: qpeldsp.h:73
GetBitContext gb
Definition: mpegvideo.h:442
GLsizei count
Definition: opengl_enc.c:109
void ff_mpv_common_end(MpegEncContext *s)
Definition: mpegvideo.c:1115
#define FFMAX(a, b)
Definition: common.h:79
uint8_t * blk_mv_type
0: frame MV, 1: field MV (interlaced frame)
Definition: vc1.h:349
void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo.c:2766
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:1825
AVCodec ff_vc1_decoder
Definition: vc1dec.c:1131
enum AVPixelFormat * pix_fmts
array of supported pixel formats, or NULL if unknown, array is terminated by -1
Definition: avcodec.h:3331
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:242
av_cold int ff_vc1_decode_end(AVCodecContext *avctx)
Close a VC1/WMV3 decoder.
Definition: vc1dec.c:583
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:2744
#define FFMIN(a, b)
Definition: common.h:81
av_cold void ff_vc1_init_transposed_scantables(VC1Context *v)
Definition: vc1dec.c:399
int next_p_frame_damaged
set if the next p frame is damaged, to avoid showing trashed b frames
Definition: mpegvideo.h:358
uint8_t * blk_mv_type_base
Definition: vc1.h:349
av_cold void ff_intrax8_common_init(IntraX8Context *w, MpegEncContext *const s)
Initialize IntraX8 frame decoder.
Definition: intrax8.c:692
int field_mode
1 for interlaced field pictures
Definition: vc1.h:352
av_cold void ff_intrax8_common_end(IntraX8Context *w)
Destroy IntraX8 frame structure.
Definition: intrax8.c:714
int width
picture width / height.
Definition: avcodec.h:1641
#define FF_PROFILE_VC1_MAIN
Definition: avcodec.h:3008
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:181
int mb_off
Definition: vc1.h:364
#define FF_PROFILE_UNKNOWN
Definition: avcodec.h:2962
void ff_mpeg_er_frame_start(MpegEncContext *s)
Definition: mpeg_er.c:46
int size_in_bits
Definition: get_bits.h:57
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:2176
av_cold int ff_vc1_decode_init_alloc_tables(VC1Context *v)
Definition: vc1dec.c:323
int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:628
int level
level
Definition: avcodec.h:3050
MotionEstContext me
Definition: mpegvideo.h:280
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:2755
#define FF_PROFILE_VC1_SIMPLE
Definition: avcodec.h:3007
uint32_t * cbp
Definition: vc1.h:386
int left_blk_sh
Definition: vc1.h:240
int16_t(* luma_mv_base)[2]
Definition: vc1.h:388
uint8_t * fieldtx_plane
Definition: vc1.h:346
int * ttblk_base
Definition: vc1.h:259
VLC * cbpcy_vlc
CBPCY VLC table.
Definition: vc1.h:284
uint8_t * sr_rows[2][2]
Sprite resizer line cache.
Definition: vc1.h:377
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
Definition: utils.c:1042
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
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.
static av_always_inline int vc1_unescape_buffer(const uint8_t *src, int size, uint8_t *dst)
Definition: vc1_common.h:70
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:131
enum AVCodecID codec_id
Definition: avcodec.h:1479
BlockDSPContext bdsp
Definition: mpegvideo.h:223
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:58
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:199
int debug
debug
Definition: avcodec.h:2696
uint32_t * cbp_base
Definition: vc1.h:386
main external API structure.
Definition: avcodec.h:1462
uint8_t * is_intra
Definition: vc1.h:387
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:97
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: utils.c:887
void * buf
Definition: avisynth_c.h:553
void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
Definition: mpegvideo.c:1956
void(* sprite_v_double_noscale)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src2a, int alpha, int width)
Definition: vc1dsp.h:70
int extradata_size
Definition: avcodec.h:1578
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:304
int sprite_width
Definition: vc1.h:376
uint8_t * is_intra_base
Definition: vc1.h:387
int coded_height
Definition: avcodec.h:1656
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:297
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:2190
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:2183
struct AVFrame * f
Definition: mpegpicture.h:46
HW acceleration through VDPAU, Picture.data[3] contains a VdpVideoSurface.
Definition: pixfmt.h:209
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:410
int context_initialized
Definition: mpegvideo.h:121
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:132
int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
generic function called after decoding the header and before a frame is decoded.
Definition: mpegvideo.c:1189
#define FF_PROFILE_VC1_COMPLEX
Definition: avcodec.h:3009
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:337
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:149
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:209
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:245
static int vc1_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Decode a VC1/WMV3 frame.
Definition: vc1dec.c:618
uint8_t * mv_type_mb_plane
bitplane for mv_type == (4MV)
Definition: vc1.h:286
int blocks_off
Definition: vc1.h:364
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:473
uint8_t tff
Definition: vc1.h:311
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:182
qpel_mc_func(* qpel_avg)[16]
Definition: motion_est.h:87
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Definition: mpegvideo.h:128
the normal 219*2^(n-8) "MPEG" YUV ranges
Definition: pixfmt.h:438
MpegEncContext s
Definition: vc1.h:174
MpegEncContext.
Definition: mpegvideo.h:78
Picture * next_picture_ptr
pointer to the next picture (for bidir pred)
Definition: mpegvideo.h:180
struct AVCodecContext * avctx
Definition: mpegvideo.h:95
VC-1 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstrea...
Definition: pixfmt.h:109
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:523
discard all non reference
Definition: avcodec.h:669
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:63
Y , 8bpp.
Definition: pixfmt.h:71
common internal api header.
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
Definition: mpegvideo.h:127
static enum AVPixelFormat vc1_hwaccel_pixfmt_list_420[]
Definition: vc1dec.c:1114
int output_width
Definition: vc1.h:376
enum FrameCodingMode fcm
Frame decoding info for Advanced profile.
Definition: vc1.h:308
static double c[64]
Picture last_picture
copy of the previous picture structure.
Definition: mpegvideo.h:159
Picture * last_picture_ptr
pointer to the previous picture.
Definition: mpegvideo.h:179
Bi-dir predicted.
Definition: avutil.h:268
AVProfile.
Definition: avcodec.h:3298
int res_fasttx
reserved, always 1
Definition: vc1.h:187
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:208
int pic_header_flag
Definition: vc1.h:369
int * ttblk
Transform type at the block level.
Definition: vc1.h:259
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:71
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:620
void * priv_data
Definition: avcodec.h:1504
int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
Definition: vc1.c:510
#define FF_PROFILE_VC1_ADVANCED
Definition: avcodec.h:3010
#define PICT_FRAME
Definition: mpegutils.h:39
int picture_structure
Definition: mpegvideo.h:454
#define av_free(p)
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:307
AVFrame * sprite_output_frame
Definition: vc1.h:375
void ff_mpv_frame_end(MpegEncContext *s)
Definition: mpegvideo.c:1421
uint8_t zzi_8x8[64]
Definition: vc1.h:348
void(* sprite_v_single)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset, int width)
Definition: vc1dsp.h:69
uint8_t rptfrm
Definition: vc1.h:311
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:237
H264ChromaContext h264chroma
Definition: vc1.h:176
int level
Advanced Profile.
Definition: vc1.h:197
#define av_freep(p)
void INT64 start
Definition: avisynth_c.h:553
HW decoding through Direct3D11, Picture.data[3] contains a ID3D11VideoDecoderOutputView pointer...
Definition: pixfmt.h:243
int new_sprite
Frame decoding info for sprite modes.
Definition: vc1.h:373
uint8_t * mv_f_next[2]
Definition: vc1.h:351
av_cold void ff_qpeldsp_init(QpelDSPContext *c)
Definition: qpeldsp.c:783
#define FFSWAP(type, a, b)
Definition: common.h:84
int two_sprites
Definition: vc1.h:374
uint8_t * mb_type[3]
Definition: vc1.h:264
uint16_t * hrd_buffer
Definition: vc1.h:326
int(* decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size)
Callback for each slice.
Definition: avcodec.h:3492
int(* end_frame)(AVCodecContext *avctx)
Called at the end of each frame or field picture.
Definition: avcodec.h:3503
void ff_vdpau_vc1_decode_picture(MpegEncContext *s, const uint8_t *buf, int buf_size)
AVPixelFormat
Pixel format.
Definition: pixfmt.h:61
This structure stores compressed data.
Definition: avcodec.h:1374
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
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:252
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:841
VC1DSPContext vc1dsp
Definition: vc1.h:177
int output_height
Definition: vc1.h:376
void(* sprite_h)(uint8_t *dst, const uint8_t *src, int offset, int advance, int count)
Definition: vc1dsp.h:68
static int width