FFmpeg
vc1dec.c
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1 /*
2  * VC-1 and WMV3 decoder
3  * Copyright (c) 2011 Mashiat Sarker Shakkhar
4  * Copyright (c) 2006-2007 Konstantin Shishkov
5  * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 /**
25  * @file
26  * VC-1 and WMV3 decoder
27  */
28 
29 #include "avcodec.h"
30 #include "blockdsp.h"
31 #include "get_bits.h"
32 #include "hwconfig.h"
33 #include "internal.h"
34 #include "mpeg_er.h"
35 #include "mpegvideo.h"
36 #include "msmpeg4.h"
37 #include "msmpeg4data.h"
38 #include "profiles.h"
39 #include "vc1.h"
40 #include "vc1data.h"
41 #include "libavutil/avassert.h"
42 
43 
44 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
45 
46 typedef struct SpriteData {
47  /**
48  * Transform coefficients for both sprites in 16.16 fixed point format,
49  * in the order they appear in the bitstream:
50  * x scale
51  * rotation 1 (unused)
52  * x offset
53  * rotation 2 (unused)
54  * y scale
55  * y offset
56  * alpha
57  */
58  int coefs[2][7];
59 
60  int effect_type, effect_flag;
61  int effect_pcount1, effect_pcount2; ///< amount of effect parameters stored in effect_params
62  int effect_params1[15], effect_params2[10]; ///< effect parameters in 16.16 fixed point format
63 } SpriteData;
64 
65 static inline int get_fp_val(GetBitContext* gb)
66 {
67  return (get_bits_long(gb, 30) - (1 << 29)) << 1;
68 }
69 
70 static void vc1_sprite_parse_transform(GetBitContext* gb, int c[7])
71 {
72  c[1] = c[3] = 0;
73 
74  switch (get_bits(gb, 2)) {
75  case 0:
76  c[0] = 1 << 16;
77  c[2] = get_fp_val(gb);
78  c[4] = 1 << 16;
79  break;
80  case 1:
81  c[0] = c[4] = get_fp_val(gb);
82  c[2] = get_fp_val(gb);
83  break;
84  case 2:
85  c[0] = get_fp_val(gb);
86  c[2] = get_fp_val(gb);
87  c[4] = get_fp_val(gb);
88  break;
89  case 3:
90  c[0] = get_fp_val(gb);
91  c[1] = get_fp_val(gb);
92  c[2] = get_fp_val(gb);
93  c[3] = get_fp_val(gb);
94  c[4] = get_fp_val(gb);
95  break;
96  }
97  c[5] = get_fp_val(gb);
98  if (get_bits1(gb))
99  c[6] = get_fp_val(gb);
100  else
101  c[6] = 1 << 16;
102 }
103 
104 static int vc1_parse_sprites(VC1Context *v, GetBitContext* gb, SpriteData* sd)
105 {
106  AVCodecContext *avctx = v->s.avctx;
107  int sprite, i;
108 
109  for (sprite = 0; sprite <= v->two_sprites; sprite++) {
110  vc1_sprite_parse_transform(gb, sd->coefs[sprite]);
111  if (sd->coefs[sprite][1] || sd->coefs[sprite][3])
112  avpriv_request_sample(avctx, "Non-zero rotation coefficients");
113  av_log(avctx, AV_LOG_DEBUG, sprite ? "S2:" : "S1:");
114  for (i = 0; i < 7; i++)
115  av_log(avctx, AV_LOG_DEBUG, " %d.%.3d",
116  sd->coefs[sprite][i] / (1<<16),
117  (abs(sd->coefs[sprite][i]) & 0xFFFF) * 1000 / (1 << 16));
118  av_log(avctx, AV_LOG_DEBUG, "\n");
119  }
120 
121  skip_bits(gb, 2);
122  if (sd->effect_type = get_bits_long(gb, 30)) {
123  switch (sd->effect_pcount1 = get_bits(gb, 4)) {
124  case 7:
125  vc1_sprite_parse_transform(gb, sd->effect_params1);
126  break;
127  case 14:
128  vc1_sprite_parse_transform(gb, sd->effect_params1);
129  vc1_sprite_parse_transform(gb, sd->effect_params1 + 7);
130  break;
131  default:
132  for (i = 0; i < sd->effect_pcount1; i++)
133  sd->effect_params1[i] = get_fp_val(gb);
134  }
135  if (sd->effect_type != 13 || sd->effect_params1[0] != sd->coefs[0][6]) {
136  // effect 13 is simple alpha blending and matches the opacity above
137  av_log(avctx, AV_LOG_DEBUG, "Effect: %d; params: ", sd->effect_type);
138  for (i = 0; i < sd->effect_pcount1; i++)
139  av_log(avctx, AV_LOG_DEBUG, " %d.%.2d",
140  sd->effect_params1[i] / (1 << 16),
141  (abs(sd->effect_params1[i]) & 0xFFFF) * 1000 / (1 << 16));
142  av_log(avctx, AV_LOG_DEBUG, "\n");
143  }
144 
145  sd->effect_pcount2 = get_bits(gb, 16);
146  if (sd->effect_pcount2 > 10) {
147  av_log(avctx, AV_LOG_ERROR, "Too many effect parameters\n");
148  return AVERROR_INVALIDDATA;
149  } else if (sd->effect_pcount2) {
150  i = -1;
151  av_log(avctx, AV_LOG_DEBUG, "Effect params 2: ");
152  while (++i < sd->effect_pcount2) {
153  sd->effect_params2[i] = get_fp_val(gb);
154  av_log(avctx, AV_LOG_DEBUG, " %d.%.2d",
155  sd->effect_params2[i] / (1 << 16),
156  (abs(sd->effect_params2[i]) & 0xFFFF) * 1000 / (1 << 16));
157  }
158  av_log(avctx, AV_LOG_DEBUG, "\n");
159  }
160  }
161  if (sd->effect_flag = get_bits1(gb))
162  av_log(avctx, AV_LOG_DEBUG, "Effect flag set\n");
163 
164  if (get_bits_count(gb) >= gb->size_in_bits +
165  (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE ? 64 : 0)) {
166  av_log(avctx, AV_LOG_ERROR, "Buffer overrun\n");
167  return AVERROR_INVALIDDATA;
168  }
169  if (get_bits_count(gb) < gb->size_in_bits - 8)
170  av_log(avctx, AV_LOG_WARNING, "Buffer not fully read\n");
171 
172  return 0;
173 }
174 
175 static void vc1_draw_sprites(VC1Context *v, SpriteData* sd)
176 {
177  int i, plane, row, sprite;
178  int sr_cache[2][2] = { { -1, -1 }, { -1, -1 } };
179  uint8_t* src_h[2][2];
180  int xoff[2], xadv[2], yoff[2], yadv[2], alpha;
181  int ysub[2];
182  MpegEncContext *s = &v->s;
183 
184  for (i = 0; i <= v->two_sprites; i++) {
185  xoff[i] = av_clip(sd->coefs[i][2], 0, v->sprite_width-1 << 16);
186  xadv[i] = sd->coefs[i][0];
187  if (xadv[i] != 1<<16 || (v->sprite_width << 16) - (v->output_width << 16) - xoff[i])
188  xadv[i] = av_clip(xadv[i], 0, ((v->sprite_width<<16) - xoff[i] - 1) / v->output_width);
189 
190  yoff[i] = av_clip(sd->coefs[i][5], 0, v->sprite_height-1 << 16);
191  yadv[i] = av_clip(sd->coefs[i][4], 0, ((v->sprite_height << 16) - yoff[i]) / v->output_height);
192  }
193  alpha = av_clip_uint16(sd->coefs[1][6]);
194 
195  for (plane = 0; plane < (CONFIG_GRAY && s->avctx->flags & AV_CODEC_FLAG_GRAY ? 1 : 3); plane++) {
196  int width = v->output_width>>!!plane;
197 
198  for (row = 0; row < v->output_height>>!!plane; row++) {
199  uint8_t *dst = v->sprite_output_frame->data[plane] +
200  v->sprite_output_frame->linesize[plane] * row;
201 
202  for (sprite = 0; sprite <= v->two_sprites; sprite++) {
203  uint8_t *iplane = s->current_picture.f->data[plane];
204  int iline = s->current_picture.f->linesize[plane];
205  int ycoord = yoff[sprite] + yadv[sprite] * row;
206  int yline = ycoord >> 16;
207  int next_line;
208  ysub[sprite] = ycoord & 0xFFFF;
209  if (sprite) {
210  iplane = s->last_picture.f->data[plane];
211  iline = s->last_picture.f->linesize[plane];
212  }
213  next_line = FFMIN(yline + 1, (v->sprite_height >> !!plane) - 1) * iline;
214  if (!(xoff[sprite] & 0xFFFF) && xadv[sprite] == 1 << 16) {
215  src_h[sprite][0] = iplane + (xoff[sprite] >> 16) + yline * iline;
216  if (ysub[sprite])
217  src_h[sprite][1] = iplane + (xoff[sprite] >> 16) + next_line;
218  } else {
219  if (sr_cache[sprite][0] != yline) {
220  if (sr_cache[sprite][1] == yline) {
221  FFSWAP(uint8_t*, v->sr_rows[sprite][0], v->sr_rows[sprite][1]);
222  FFSWAP(int, sr_cache[sprite][0], sr_cache[sprite][1]);
223  } else {
224  v->vc1dsp.sprite_h(v->sr_rows[sprite][0], iplane + yline * iline, xoff[sprite], xadv[sprite], width);
225  sr_cache[sprite][0] = yline;
226  }
227  }
228  if (ysub[sprite] && sr_cache[sprite][1] != yline + 1) {
229  v->vc1dsp.sprite_h(v->sr_rows[sprite][1],
230  iplane + next_line, xoff[sprite],
231  xadv[sprite], width);
232  sr_cache[sprite][1] = yline + 1;
233  }
234  src_h[sprite][0] = v->sr_rows[sprite][0];
235  src_h[sprite][1] = v->sr_rows[sprite][1];
236  }
237  }
238 
239  if (!v->two_sprites) {
240  if (ysub[0]) {
241  v->vc1dsp.sprite_v_single(dst, src_h[0][0], src_h[0][1], ysub[0], width);
242  } else {
243  memcpy(dst, src_h[0][0], width);
244  }
245  } else {
246  if (ysub[0] && ysub[1]) {
247  v->vc1dsp.sprite_v_double_twoscale(dst, src_h[0][0], src_h[0][1], ysub[0],
248  src_h[1][0], src_h[1][1], ysub[1], alpha, width);
249  } else if (ysub[0]) {
250  v->vc1dsp.sprite_v_double_onescale(dst, src_h[0][0], src_h[0][1], ysub[0],
251  src_h[1][0], alpha, width);
252  } else if (ysub[1]) {
253  v->vc1dsp.sprite_v_double_onescale(dst, src_h[1][0], src_h[1][1], ysub[1],
254  src_h[0][0], (1<<16)-1-alpha, width);
255  } else {
256  v->vc1dsp.sprite_v_double_noscale(dst, src_h[0][0], src_h[1][0], alpha, width);
257  }
258  }
259  }
260 
261  if (!plane) {
262  for (i = 0; i <= v->two_sprites; i++) {
263  xoff[i] >>= 1;
264  yoff[i] >>= 1;
265  }
266  }
267 
268  }
269 }
270 
271 
272 static int vc1_decode_sprites(VC1Context *v, GetBitContext* gb)
273 {
274  int ret;
275  MpegEncContext *s = &v->s;
276  AVCodecContext *avctx = s->avctx;
277  SpriteData sd;
278 
279  memset(&sd, 0, sizeof(sd));
280 
281  ret = vc1_parse_sprites(v, gb, &sd);
282  if (ret < 0)
283  return ret;
284 
285  if (!s->current_picture.f || !s->current_picture.f->data[0]) {
286  av_log(avctx, AV_LOG_ERROR, "Got no sprites\n");
287  return AVERROR_UNKNOWN;
288  }
289 
290  if (v->two_sprites && (!s->last_picture_ptr || !s->last_picture.f->data[0])) {
291  av_log(avctx, AV_LOG_WARNING, "Need two sprites, only got one\n");
292  v->two_sprites = 0;
293  }
294 
296  if ((ret = ff_get_buffer(avctx, v->sprite_output_frame, 0)) < 0)
297  return ret;
298 
299  vc1_draw_sprites(v, &sd);
300 
301  return 0;
302 }
303 
304 static void vc1_sprite_flush(AVCodecContext *avctx)
305 {
306  VC1Context *v = avctx->priv_data;
307  MpegEncContext *s = &v->s;
308  AVFrame *f = s->current_picture.f;
309  int plane, i;
310 
311  /* Windows Media Image codecs have a convergence interval of two keyframes.
312  Since we can't enforce it, clear to black the missing sprite. This is
313  wrong but it looks better than doing nothing. */
314 
315  if (f && f->data[0])
316  for (plane = 0; plane < (CONFIG_GRAY && s->avctx->flags & AV_CODEC_FLAG_GRAY ? 1 : 3); plane++)
317  for (i = 0; i < v->sprite_height>>!!plane; i++)
318  memset(f->data[plane] + i * f->linesize[plane],
319  plane ? 128 : 0, f->linesize[plane]);
320 }
321 
322 #endif
323 
325 {
326  MpegEncContext *s = &v->s;
327  int i, ret = AVERROR(ENOMEM);
328  int mb_height = FFALIGN(s->mb_height, 2);
329 
330  /* Allocate mb bitplanes */
331  v->mv_type_mb_plane = av_malloc (s->mb_stride * mb_height);
332  v->direct_mb_plane = av_malloc (s->mb_stride * mb_height);
333  v->forward_mb_plane = av_malloc (s->mb_stride * mb_height);
334  v->fieldtx_plane = av_mallocz(s->mb_stride * mb_height);
335  v->acpred_plane = av_malloc (s->mb_stride * mb_height);
336  v->over_flags_plane = av_malloc (s->mb_stride * mb_height);
337  if (!v->mv_type_mb_plane || !v->direct_mb_plane || !v->forward_mb_plane ||
338  !v->fieldtx_plane || !v->acpred_plane || !v->over_flags_plane)
339  goto error;
340 
341  v->n_allocated_blks = s->mb_width + 2;
342  v->block = av_malloc(sizeof(*v->block) * v->n_allocated_blks);
343  v->cbp_base = av_malloc(sizeof(v->cbp_base[0]) * 3 * s->mb_stride);
344  if (!v->block || !v->cbp_base)
345  goto error;
346  v->cbp = v->cbp_base + 2 * s->mb_stride;
347  v->ttblk_base = av_malloc(sizeof(v->ttblk_base[0]) * 3 * s->mb_stride);
348  if (!v->ttblk_base)
349  goto error;
350  v->ttblk = v->ttblk_base + 2 * s->mb_stride;
351  v->is_intra_base = av_mallocz(sizeof(v->is_intra_base[0]) * 3 * s->mb_stride);
352  if (!v->is_intra_base)
353  goto error;
354  v->is_intra = v->is_intra_base + 2 * s->mb_stride;
355  v->luma_mv_base = av_mallocz(sizeof(v->luma_mv_base[0]) * 3 * s->mb_stride);
356  if (!v->luma_mv_base)
357  goto error;
358  v->luma_mv = v->luma_mv_base + 2 * s->mb_stride;
359 
360  /* allocate block type info in that way so it could be used with s->block_index[] */
361  v->mb_type_base = av_malloc(s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
362  if (!v->mb_type_base)
363  goto error;
364  v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
365  v->mb_type[1] = v->mb_type_base + s->b8_stride * (mb_height * 2 + 1) + s->mb_stride + 1;
366  v->mb_type[2] = v->mb_type[1] + s->mb_stride * (mb_height + 1);
367 
368  /* allocate memory to store block level MV info */
369  v->blk_mv_type_base = av_mallocz( s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
370  if (!v->blk_mv_type_base)
371  goto error;
372  v->blk_mv_type = v->blk_mv_type_base + s->b8_stride + 1;
373  v->mv_f_base = av_mallocz(2 * (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2));
374  if (!v->mv_f_base)
375  goto error;
376  v->mv_f[0] = v->mv_f_base + s->b8_stride + 1;
377  v->mv_f[1] = v->mv_f[0] + (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
378  v->mv_f_next_base = av_mallocz(2 * (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2));
379  if (!v->mv_f_next_base)
380  goto error;
381  v->mv_f_next[0] = v->mv_f_next_base + s->b8_stride + 1;
382  v->mv_f_next[1] = v->mv_f_next[0] + (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
383 
384  if (s->avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || s->avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
385  for (i = 0; i < 4; i++)
386  if (!(v->sr_rows[i >> 1][i & 1] = av_malloc(v->output_width)))
387  goto error;
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:
399  ff_vc1_decode_end(s->avctx);
400  return ret;
401 }
402 
404 {
405  int i;
406  for (i = 0; i < 64; i++) {
407 #define transpose(x) (((x) >> 3) | (((x) & 7) << 3))
408  v->zz_8x8[0][i] = transpose(ff_wmv1_scantable[0][i]);
409  v->zz_8x8[1][i] = transpose(ff_wmv1_scantable[1][i]);
410  v->zz_8x8[2][i] = transpose(ff_wmv1_scantable[2][i]);
411  v->zz_8x8[3][i] = transpose(ff_wmv1_scantable[3][i]);
413  }
414  v->left_blk_sh = 0;
415  v->top_blk_sh = 3;
416 }
417 
418 /** Initialize a VC1/WMV3 decoder
419  * @todo TODO: Handle VC-1 IDUs (Transport level?)
420  * @todo TODO: Decipher remaining bits in extra_data
421  */
423 {
424  VC1Context *v = avctx->priv_data;
425  MpegEncContext *s = &v->s;
426  GetBitContext gb;
427  int ret;
428 
429  /* save the container output size for WMImage */
430  v->output_width = avctx->width;
431  v->output_height = avctx->height;
432 
433  if (!avctx->extradata_size || !avctx->extradata)
434  return AVERROR_INVALIDDATA;
435  v->s.avctx = avctx;
436 
438 
439  if (avctx->codec_id == AV_CODEC_ID_WMV3 || avctx->codec_id == AV_CODEC_ID_WMV3IMAGE) {
440  int count = 0;
441 
442  // looks like WMV3 has a sequence header stored in the extradata
443  // advanced sequence header may be before the first frame
444  // the last byte of the extradata is a version number, 1 for the
445  // samples we can decode
446 
447  init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
448 
449  if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0)
450  return ret;
451 
452  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE && !v->res_sprite) {
453  avpriv_request_sample(avctx, "Non sprite WMV3IMAGE");
454  return AVERROR_PATCHWELCOME;
455  }
456 
457  count = avctx->extradata_size*8 - get_bits_count(&gb);
458  if (count > 0) {
459  av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
460  count, get_bits_long(&gb, FFMIN(count, 32)));
461  } else if (count < 0) {
462  av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
463  }
464  } else { // VC1/WVC1/WVP2
465  const uint8_t *start = avctx->extradata;
466  uint8_t *end = avctx->extradata + avctx->extradata_size;
467  const uint8_t *next;
468  int size, buf2_size;
469  uint8_t *buf2 = NULL;
470  int seq_initialized = 0, ep_initialized = 0;
471 
472  if (avctx->extradata_size < 16) {
473  av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
474  return AVERROR_INVALIDDATA;
475  }
476 
478  if (!buf2)
479  return AVERROR(ENOMEM);
480 
481  start = find_next_marker(start, end); // in WVC1 extradata first byte is its size, but can be 0 in mkv
482  next = start;
483  for (; next < end; start = next) {
484  next = find_next_marker(start + 4, end);
485  size = next - start - 4;
486  if (size <= 0)
487  continue;
488  buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
489  init_get_bits(&gb, buf2, buf2_size * 8);
490  switch (AV_RB32(start)) {
491  case VC1_CODE_SEQHDR:
492  if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0) {
493  av_free(buf2);
494  return ret;
495  }
496  seq_initialized = 1;
497  break;
498  case VC1_CODE_ENTRYPOINT:
499  if ((ret = ff_vc1_decode_entry_point(avctx, v, &gb)) < 0) {
500  av_free(buf2);
501  return ret;
502  }
503  ep_initialized = 1;
504  break;
505  }
506  }
507  av_free(buf2);
508  if (!seq_initialized || !ep_initialized) {
509  av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
510  return AVERROR_INVALIDDATA;
511  }
512  v->res_sprite = (avctx->codec_id == AV_CODEC_ID_VC1IMAGE);
513  }
514 
515  avctx->profile = v->profile;
516  if (v->profile == PROFILE_ADVANCED)
517  avctx->level = v->level;
518 
519  if (!CONFIG_GRAY || !(avctx->flags & AV_CODEC_FLAG_GRAY))
520  avctx->pix_fmt = ff_get_format(avctx, avctx->codec->pix_fmts);
521  else {
522  avctx->pix_fmt = AV_PIX_FMT_GRAY8;
523  if (avctx->color_range == AVCOL_RANGE_UNSPECIFIED)
524  avctx->color_range = AVCOL_RANGE_MPEG;
525  }
526 
527  // ensure static VLC tables are initialized
528  if ((ret = ff_msmpeg4_decode_init(avctx)) < 0)
529  return ret;
530  if ((ret = ff_vc1_decode_init_alloc_tables(v)) < 0)
531  return ret;
532  // Hack to ensure the above functions will be called
533  // again once we know all necessary settings.
534  // That this is necessary might indicate a bug.
535  ff_vc1_decode_end(avctx);
536 
537  ff_blockdsp_init(&s->bdsp, avctx);
539  ff_qpeldsp_init(&s->qdsp);
540 
541  avctx->has_b_frames = !!avctx->max_b_frames;
542 
543  if (v->color_prim == 1 || v->color_prim == 5 || v->color_prim == 6)
544  avctx->color_primaries = v->color_prim;
545  if (v->transfer_char == 1 || v->transfer_char == 7)
546  avctx->color_trc = v->transfer_char;
547  if (v->matrix_coef == 1 || v->matrix_coef == 6 || v->matrix_coef == 7)
548  avctx->colorspace = v->matrix_coef;
549 
550  s->mb_width = (avctx->coded_width + 15) >> 4;
551  s->mb_height = (avctx->coded_height + 15) >> 4;
552 
553  if (v->profile == PROFILE_ADVANCED || v->res_fasttx) {
555  } else {
556  memcpy(v->zz_8x8, ff_wmv1_scantable, 4*64);
557  v->left_blk_sh = 3;
558  v->top_blk_sh = 0;
559  }
560 
561  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
562  v->sprite_width = avctx->coded_width;
563  v->sprite_height = avctx->coded_height;
564 
565  avctx->coded_width = avctx->width = v->output_width;
566  avctx->coded_height = avctx->height = v->output_height;
567 
568  // prevent 16.16 overflows
569  if (v->sprite_width > 1 << 14 ||
570  v->sprite_height > 1 << 14 ||
571  v->output_width > 1 << 14 ||
572  v->output_height > 1 << 14) {
573  return AVERROR_INVALIDDATA;
574  }
575 
576  if ((v->sprite_width&1) || (v->sprite_height&1)) {
577  avpriv_request_sample(avctx, "odd sprites support");
578  return AVERROR_PATCHWELCOME;
579  }
580  }
581  return 0;
582 }
583 
584 /** Close a VC1/WMV3 decoder
585  * @warning Initial try at using MpegEncContext stuff
586  */
588 {
589  VC1Context *v = avctx->priv_data;
590  int i;
591 
593 
594  for (i = 0; i < 4; i++)
595  av_freep(&v->sr_rows[i >> 1][i & 1]);
596  ff_mpv_common_end(&v->s);
600  av_freep(&v->fieldtx_plane);
601  av_freep(&v->acpred_plane);
603  av_freep(&v->mb_type_base);
605  av_freep(&v->mv_f_base);
607  av_freep(&v->block);
608  av_freep(&v->cbp_base);
609  av_freep(&v->ttblk_base);
610  av_freep(&v->is_intra_base); // FIXME use v->mb_type[]
611  av_freep(&v->luma_mv_base);
613  return 0;
614 }
615 
616 
617 /** Decode a VC1/WMV3 frame
618  * @todo TODO: Handle VC-1 IDUs (Transport level?)
619  */
620 static int vc1_decode_frame(AVCodecContext *avctx, void *data,
621  int *got_frame, AVPacket *avpkt)
622 {
623  const uint8_t *buf = avpkt->data;
624  int buf_size = avpkt->size, n_slices = 0, i, ret;
625  VC1Context *v = avctx->priv_data;
626  MpegEncContext *s = &v->s;
627  AVFrame *pict = data;
628  uint8_t *buf2 = NULL;
629  const uint8_t *buf_start = buf, *buf_start_second_field = NULL;
630  int mb_height, n_slices1=-1;
631  struct {
632  uint8_t *buf;
633  GetBitContext gb;
634  int mby_start;
635  const uint8_t *rawbuf;
636  int raw_size;
637  } *slices = NULL, *tmp;
638 
639  v->second_field = 0;
640 
641  if(s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY)
642  s->low_delay = 1;
643 
644  /* no supplementary picture */
645  if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == VC1_CODE_ENDOFSEQ)) {
646  /* special case for last picture */
647  if (s->low_delay == 0 && s->next_picture_ptr) {
648  if ((ret = av_frame_ref(pict, s->next_picture_ptr->f)) < 0)
649  return ret;
650  s->next_picture_ptr = NULL;
651 
652  *got_frame = 1;
653  }
654 
655  return buf_size;
656  }
657 
658  //for advanced profile we may need to parse and unescape data
659  if (avctx->codec_id == AV_CODEC_ID_VC1 || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
660  int buf_size2 = 0;
661  buf2 = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
662  if (!buf2)
663  return AVERROR(ENOMEM);
664 
665  if (IS_MARKER(AV_RB32(buf))) { /* frame starts with marker and needs to be parsed */
666  const uint8_t *start, *end, *next;
667  int size;
668 
669  next = buf;
670  for (start = buf, end = buf + buf_size; next < end; start = next) {
671  next = find_next_marker(start + 4, end);
672  size = next - start - 4;
673  if (size <= 0) continue;
674  switch (AV_RB32(start)) {
675  case VC1_CODE_FRAME:
676  if (avctx->hwaccel)
677  buf_start = start;
678  buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
679  break;
680  case VC1_CODE_FIELD: {
681  int buf_size3;
682  if (avctx->hwaccel)
683  buf_start_second_field = start;
684  tmp = av_realloc_array(slices, sizeof(*slices), n_slices+1);
685  if (!tmp) {
686  ret = AVERROR(ENOMEM);
687  goto err;
688  }
689  slices = tmp;
690  slices[n_slices].buf = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
691  if (!slices[n_slices].buf) {
692  ret = AVERROR(ENOMEM);
693  goto err;
694  }
695  buf_size3 = vc1_unescape_buffer(start + 4, size,
696  slices[n_slices].buf);
697  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
698  buf_size3 << 3);
699  slices[n_slices].mby_start = avctx->coded_height + 31 >> 5;
700  slices[n_slices].rawbuf = start;
701  slices[n_slices].raw_size = size + 4;
702  n_slices1 = n_slices - 1; // index of the last slice of the first field
703  n_slices++;
704  break;
705  }
706  case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
707  buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
708  init_get_bits(&s->gb, buf2, buf_size2 * 8);
709  ff_vc1_decode_entry_point(avctx, v, &s->gb);
710  break;
711  case VC1_CODE_SLICE: {
712  int buf_size3;
713  tmp = av_realloc_array(slices, sizeof(*slices), n_slices+1);
714  if (!tmp) {
715  ret = AVERROR(ENOMEM);
716  goto err;
717  }
718  slices = tmp;
719  slices[n_slices].buf = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
720  if (!slices[n_slices].buf) {
721  ret = AVERROR(ENOMEM);
722  goto err;
723  }
724  buf_size3 = vc1_unescape_buffer(start + 4, size,
725  slices[n_slices].buf);
726  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
727  buf_size3 << 3);
728  slices[n_slices].mby_start = get_bits(&slices[n_slices].gb, 9);
729  slices[n_slices].rawbuf = start;
730  slices[n_slices].raw_size = size + 4;
731  n_slices++;
732  break;
733  }
734  }
735  }
736  } else if (v->interlace && ((buf[0] & 0xC0) == 0xC0)) { /* WVC1 interlaced stores both fields divided by marker */
737  const uint8_t *divider;
738  int buf_size3;
739 
740  divider = find_next_marker(buf, buf + buf_size);
741  if ((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD) {
742  av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
744  goto err;
745  } else { // found field marker, unescape second field
746  if (avctx->hwaccel)
747  buf_start_second_field = divider;
748  tmp = av_realloc_array(slices, sizeof(*slices), n_slices+1);
749  if (!tmp) {
750  ret = AVERROR(ENOMEM);
751  goto err;
752  }
753  slices = tmp;
754  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
755  if (!slices[n_slices].buf) {
756  ret = AVERROR(ENOMEM);
757  goto err;
758  }
759  buf_size3 = vc1_unescape_buffer(divider + 4, buf + buf_size - divider - 4, slices[n_slices].buf);
760  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
761  buf_size3 << 3);
762  slices[n_slices].mby_start = s->mb_height + 1 >> 1;
763  slices[n_slices].rawbuf = divider;
764  slices[n_slices].raw_size = buf + buf_size - divider;
765  n_slices1 = n_slices - 1;
766  n_slices++;
767  }
768  buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
769  } else {
770  buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
771  }
772  init_get_bits(&s->gb, buf2, buf_size2*8);
773  } else
774  init_get_bits(&s->gb, buf, buf_size*8);
775 
776  if (v->res_sprite) {
777  v->new_sprite = !get_bits1(&s->gb);
778  v->two_sprites = get_bits1(&s->gb);
779  /* res_sprite means a Windows Media Image stream, AV_CODEC_ID_*IMAGE means
780  we're using the sprite compositor. These are intentionally kept separate
781  so you can get the raw sprites by using the wmv3 decoder for WMVP or
782  the vc1 one for WVP2 */
783  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
784  if (v->new_sprite) {
785  // switch AVCodecContext parameters to those of the sprites
786  avctx->width = avctx->coded_width = v->sprite_width;
787  avctx->height = avctx->coded_height = v->sprite_height;
788  } else {
789  goto image;
790  }
791  }
792  }
793 
794  if (s->context_initialized &&
795  (s->width != avctx->coded_width ||
796  s->height != avctx->coded_height)) {
797  ff_vc1_decode_end(avctx);
798  }
799 
800  if (!s->context_initialized) {
801  if ((ret = ff_msmpeg4_decode_init(avctx)) < 0)
802  goto err;
803  if ((ret = ff_vc1_decode_init_alloc_tables(v)) < 0) {
805  goto err;
806  }
807 
808  s->low_delay = !avctx->has_b_frames || v->res_sprite;
809 
810  if (v->profile == PROFILE_ADVANCED) {
811  if(avctx->coded_width<=1 || avctx->coded_height<=1) {
813  goto err;
814  }
815  s->h_edge_pos = avctx->coded_width;
816  s->v_edge_pos = avctx->coded_height;
817  }
818  }
819 
820  // do parse frame header
821  v->pic_header_flag = 0;
822  v->first_pic_header_flag = 1;
823  if (v->profile < PROFILE_ADVANCED) {
824  if ((ret = ff_vc1_parse_frame_header(v, &s->gb)) < 0) {
825  goto err;
826  }
827  } else {
828  if ((ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
829  goto err;
830  }
831  }
832  v->first_pic_header_flag = 0;
833 
834  if (avctx->debug & FF_DEBUG_PICT_INFO)
835  av_log(v->s.avctx, AV_LOG_DEBUG, "pict_type: %c\n", av_get_picture_type_char(s->pict_type));
836 
837  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
838  && s->pict_type != AV_PICTURE_TYPE_I) {
839  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected I-frame\n");
841  goto err;
842  }
843  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
844  && v->field_mode) {
845  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected Frames not Fields\n");
847  goto err;
848  }
849  if ((s->mb_height >> v->field_mode) == 0) {
850  av_log(v->s.avctx, AV_LOG_ERROR, "image too short\n");
852  goto err;
853  }
854 
855  // for skipping the frame
856  s->current_picture.f->pict_type = s->pict_type;
857  s->current_picture.f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
858 
859  /* skip B-frames if we don't have reference frames */
860  if (!s->last_picture_ptr && (s->pict_type == AV_PICTURE_TYPE_B || s->droppable)) {
861  av_log(v->s.avctx, AV_LOG_DEBUG, "Skipping B frame without reference frames\n");
862  goto end;
863  }
864  if ((avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B) ||
865  (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I) ||
866  avctx->skip_frame >= AVDISCARD_ALL) {
867  goto end;
868  }
869 
870  if (s->next_p_frame_damaged) {
871  if (s->pict_type == AV_PICTURE_TYPE_B)
872  goto end;
873  else
874  s->next_p_frame_damaged = 0;
875  }
876 
877  if ((ret = ff_mpv_frame_start(s, avctx)) < 0) {
878  goto err;
879  }
880 
884 
885  // process pulldown flags
886  s->current_picture_ptr->f->repeat_pict = 0;
887  // Pulldown flags are only valid when 'broadcast' has been set.
888  // So ticks_per_frame will be 2
889  if (v->rff) {
890  // repeat field
891  s->current_picture_ptr->f->repeat_pict = 1;
892  } else if (v->rptfrm) {
893  // repeat frames
894  s->current_picture_ptr->f->repeat_pict = v->rptfrm * 2;
895  }
896 
897  s->me.qpel_put = s->qdsp.put_qpel_pixels_tab;
898  s->me.qpel_avg = s->qdsp.avg_qpel_pixels_tab;
899 
900  if (avctx->hwaccel) {
901  s->mb_y = 0;
902  if (v->field_mode && buf_start_second_field) {
903  // decode first field
904  s->picture_structure = PICT_BOTTOM_FIELD - v->tff;
905  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start, buf_start_second_field - buf_start)) < 0)
906  goto err;
907 
908  if (n_slices1 == -1) {
909  // no slices, decode the field as-is
910  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, buf_start_second_field - buf_start)) < 0)
911  goto err;
912  } else {
913  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, slices[0].rawbuf - buf_start)) < 0)
914  goto err;
915 
916  for (i = 0 ; i < n_slices1 + 1; i++) {
917  s->gb = slices[i].gb;
918  s->mb_y = slices[i].mby_start;
919 
920  v->pic_header_flag = get_bits1(&s->gb);
921  if (v->pic_header_flag) {
922  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
923  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
925  if (avctx->err_recognition & AV_EF_EXPLODE)
926  goto err;
927  continue;
928  }
929  }
930 
931  if ((ret = avctx->hwaccel->decode_slice(avctx, slices[i].rawbuf, slices[i].raw_size)) < 0)
932  goto err;
933  }
934  }
935 
936  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
937  goto err;
938 
939  // decode second field
940  s->gb = slices[n_slices1 + 1].gb;
941  s->mb_y = slices[n_slices1 + 1].mby_start;
942  s->picture_structure = PICT_TOP_FIELD + v->tff;
943  v->second_field = 1;
944  v->pic_header_flag = 0;
945  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
946  av_log(avctx, AV_LOG_ERROR, "parsing header for second field failed");
948  goto err;
949  }
951 
952  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start_second_field, (buf + buf_size) - buf_start_second_field)) < 0)
953  goto err;
954 
955  if (n_slices - n_slices1 == 2) {
956  // no slices, decode the field as-is
957  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start_second_field, (buf + buf_size) - buf_start_second_field)) < 0)
958  goto err;
959  } else {
960  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start_second_field, slices[n_slices1 + 2].rawbuf - buf_start_second_field)) < 0)
961  goto err;
962 
963  for (i = n_slices1 + 2; i < n_slices; i++) {
964  s->gb = slices[i].gb;
965  s->mb_y = slices[i].mby_start;
966 
967  v->pic_header_flag = get_bits1(&s->gb);
968  if (v->pic_header_flag) {
969  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
970  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
972  if (avctx->err_recognition & AV_EF_EXPLODE)
973  goto err;
974  continue;
975  }
976  }
977 
978  if ((ret = avctx->hwaccel->decode_slice(avctx, slices[i].rawbuf, slices[i].raw_size)) < 0)
979  goto err;
980  }
981  }
982 
983  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
984  goto err;
985  } else {
986  s->picture_structure = PICT_FRAME;
987  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start, (buf + buf_size) - buf_start)) < 0)
988  goto err;
989 
990  if (n_slices == 0) {
991  // no slices, decode the frame as-is
992  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, (buf + buf_size) - buf_start)) < 0)
993  goto err;
994  } else {
995  // decode the frame part as the first slice
996  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, slices[0].rawbuf - buf_start)) < 0)
997  goto err;
998 
999  // and process the slices as additional slices afterwards
1000  for (i = 0 ; i < n_slices; i++) {
1001  s->gb = slices[i].gb;
1002  s->mb_y = slices[i].mby_start;
1003 
1004  v->pic_header_flag = get_bits1(&s->gb);
1005  if (v->pic_header_flag) {
1006  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1007  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1009  if (avctx->err_recognition & AV_EF_EXPLODE)
1010  goto err;
1011  continue;
1012  }
1013  }
1014 
1015  if ((ret = avctx->hwaccel->decode_slice(avctx, slices[i].rawbuf, slices[i].raw_size)) < 0)
1016  goto err;
1017  }
1018  }
1019  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
1020  goto err;
1021  }
1022  } else {
1023  int header_ret = 0;
1024 
1026 
1027  v->end_mb_x = s->mb_width;
1028  if (v->field_mode) {
1029  s->current_picture.f->linesize[0] <<= 1;
1030  s->current_picture.f->linesize[1] <<= 1;
1031  s->current_picture.f->linesize[2] <<= 1;
1032  s->linesize <<= 1;
1033  s->uvlinesize <<= 1;
1034  }
1035  mb_height = s->mb_height >> v->field_mode;
1036 
1037  av_assert0 (mb_height > 0);
1038 
1039  for (i = 0; i <= n_slices; i++) {
1040  if (i > 0 && slices[i - 1].mby_start >= mb_height) {
1041  if (v->field_mode <= 0) {
1042  av_log(v->s.avctx, AV_LOG_ERROR, "Slice %d starts beyond "
1043  "picture boundary (%d >= %d)\n", i,
1044  slices[i - 1].mby_start, mb_height);
1045  continue;
1046  }
1047  v->second_field = 1;
1048  av_assert0((s->mb_height & 1) == 0);
1049  v->blocks_off = s->b8_stride * (s->mb_height&~1);
1050  v->mb_off = s->mb_stride * s->mb_height >> 1;
1051  } else {
1052  v->second_field = 0;
1053  v->blocks_off = 0;
1054  v->mb_off = 0;
1055  }
1056  if (i) {
1057  v->pic_header_flag = 0;
1058  if (v->field_mode && i == n_slices1 + 2) {
1059  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1060  av_log(v->s.avctx, AV_LOG_ERROR, "Field header damaged\n");
1062  if (avctx->err_recognition & AV_EF_EXPLODE)
1063  goto err;
1064  continue;
1065  }
1066  } else if (get_bits1(&s->gb)) {
1067  v->pic_header_flag = 1;
1068  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1069  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1071  if (avctx->err_recognition & AV_EF_EXPLODE)
1072  goto err;
1073  continue;
1074  }
1075  }
1076  }
1077  if (header_ret < 0)
1078  continue;
1079  s->start_mb_y = (i == 0) ? 0 : FFMAX(0, slices[i-1].mby_start % mb_height);
1080  if (!v->field_mode || v->second_field)
1081  s->end_mb_y = (i == n_slices ) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1082  else {
1083  if (i >= n_slices) {
1084  av_log(v->s.avctx, AV_LOG_ERROR, "first field slice count too large\n");
1085  continue;
1086  }
1087  s->end_mb_y = (i == n_slices1 + 1) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1088  }
1089  if (s->end_mb_y <= s->start_mb_y) {
1090  av_log(v->s.avctx, AV_LOG_ERROR, "end mb y %d %d invalid\n", s->end_mb_y, s->start_mb_y);
1091  continue;
1092  }
1093  if (((s->pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) ||
1094  (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type)) &&
1095  !v->cbpcy_vlc) {
1096  av_log(v->s.avctx, AV_LOG_ERROR, "missing cbpcy_vlc\n");
1097  continue;
1098  }
1100  if (i != n_slices) {
1101  s->gb = slices[i].gb;
1102  }
1103  }
1104  if (v->field_mode) {
1105  v->second_field = 0;
1106  s->current_picture.f->linesize[0] >>= 1;
1107  s->current_picture.f->linesize[1] >>= 1;
1108  s->current_picture.f->linesize[2] >>= 1;
1109  s->linesize >>= 1;
1110  s->uvlinesize >>= 1;
1112  FFSWAP(uint8_t *, v->mv_f_next[0], v->mv_f[0]);
1113  FFSWAP(uint8_t *, v->mv_f_next[1], v->mv_f[1]);
1114  }
1115  }
1116  ff_dlog(s->avctx, "Consumed %i/%i bits\n",
1117  get_bits_count(&s->gb), s->gb.size_in_bits);
1118 // if (get_bits_count(&s->gb) > buf_size * 8)
1119 // return -1;
1120  if(s->er.error_occurred && s->pict_type == AV_PICTURE_TYPE_B) {
1122  goto err;
1123  }
1124  if (!v->field_mode)
1125  ff_er_frame_end(&s->er);
1126  }
1127 
1129 
1130  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
1131 image:
1132  avctx->width = avctx->coded_width = v->output_width;
1133  avctx->height = avctx->coded_height = v->output_height;
1134  if (avctx->skip_frame >= AVDISCARD_NONREF)
1135  goto end;
1136  if (!v->sprite_output_frame &&
1137  !(v->sprite_output_frame = av_frame_alloc())) {
1138  ret = AVERROR(ENOMEM);
1139  goto err;
1140  }
1141 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
1142  if ((ret = vc1_decode_sprites(v, &s->gb)) < 0)
1143  goto err;
1144 #endif
1145  if ((ret = av_frame_ref(pict, v->sprite_output_frame)) < 0)
1146  goto err;
1147  *got_frame = 1;
1148  } else {
1149  if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
1150  if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
1151  goto err;
1152  ff_print_debug_info(s, s->current_picture_ptr, pict);
1153  *got_frame = 1;
1154  } else if (s->last_picture_ptr) {
1155  if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
1156  goto err;
1157  ff_print_debug_info(s, s->last_picture_ptr, pict);
1158  *got_frame = 1;
1159  }
1160  }
1161 
1162 end:
1163  av_free(buf2);
1164  for (i = 0; i < n_slices; i++)
1165  av_free(slices[i].buf);
1166  av_free(slices);
1167  return buf_size;
1168 
1169 err:
1170  av_free(buf2);
1171  for (i = 0; i < n_slices; i++)
1172  av_free(slices[i].buf);
1173  av_free(slices);
1174  return ret;
1175 }
1176 
1177 
1179 #if CONFIG_VC1_DXVA2_HWACCEL
1181 #endif
1182 #if CONFIG_VC1_D3D11VA_HWACCEL
1185 #endif
1186 #if CONFIG_VC1_NVDEC_HWACCEL
1188 #endif
1189 #if CONFIG_VC1_VAAPI_HWACCEL
1191 #endif
1192 #if CONFIG_VC1_VDPAU_HWACCEL
1194 #endif
1197 };
1198 
1200  .name = "vc1",
1201  .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"),
1202  .type = AVMEDIA_TYPE_VIDEO,
1203  .id = AV_CODEC_ID_VC1,
1204  .priv_data_size = sizeof(VC1Context),
1205  .init = vc1_decode_init,
1206  .close = ff_vc1_decode_end,
1208  .flush = ff_mpeg_flush,
1209  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1211  .hw_configs = (const AVCodecHWConfigInternal *const []) {
1212 #if CONFIG_VC1_DXVA2_HWACCEL
1213  HWACCEL_DXVA2(vc1),
1214 #endif
1215 #if CONFIG_VC1_D3D11VA_HWACCEL
1216  HWACCEL_D3D11VA(vc1),
1217 #endif
1218 #if CONFIG_VC1_D3D11VA2_HWACCEL
1219  HWACCEL_D3D11VA2(vc1),
1220 #endif
1221 #if CONFIG_VC1_NVDEC_HWACCEL
1222  HWACCEL_NVDEC(vc1),
1223 #endif
1224 #if CONFIG_VC1_VAAPI_HWACCEL
1225  HWACCEL_VAAPI(vc1),
1226 #endif
1227 #if CONFIG_VC1_VDPAU_HWACCEL
1228  HWACCEL_VDPAU(vc1),
1229 #endif
1230  NULL
1231  },
1233 };
1234 
1235 #if CONFIG_WMV3_DECODER
1236 const AVCodec ff_wmv3_decoder = {
1237  .name = "wmv3",
1238  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9"),
1239  .type = AVMEDIA_TYPE_VIDEO,
1240  .id = AV_CODEC_ID_WMV3,
1241  .priv_data_size = sizeof(VC1Context),
1242  .init = vc1_decode_init,
1243  .close = ff_vc1_decode_end,
1245  .flush = ff_mpeg_flush,
1246  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1248  .hw_configs = (const AVCodecHWConfigInternal *const []) {
1249 #if CONFIG_WMV3_DXVA2_HWACCEL
1250  HWACCEL_DXVA2(wmv3),
1251 #endif
1252 #if CONFIG_WMV3_D3D11VA_HWACCEL
1253  HWACCEL_D3D11VA(wmv3),
1254 #endif
1255 #if CONFIG_WMV3_D3D11VA2_HWACCEL
1256  HWACCEL_D3D11VA2(wmv3),
1257 #endif
1258 #if CONFIG_WMV3_NVDEC_HWACCEL
1259  HWACCEL_NVDEC(wmv3),
1260 #endif
1261 #if CONFIG_WMV3_VAAPI_HWACCEL
1262  HWACCEL_VAAPI(wmv3),
1263 #endif
1264 #if CONFIG_WMV3_VDPAU_HWACCEL
1265  HWACCEL_VDPAU(wmv3),
1266 #endif
1267  NULL
1268  },
1270 };
1271 #endif
1272 
1273 #if CONFIG_WMV3IMAGE_DECODER
1274 const AVCodec ff_wmv3image_decoder = {
1275  .name = "wmv3image",
1276  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 Image"),
1277  .type = AVMEDIA_TYPE_VIDEO,
1278  .id = AV_CODEC_ID_WMV3IMAGE,
1279  .priv_data_size = sizeof(VC1Context),
1280  .init = vc1_decode_init,
1281  .close = ff_vc1_decode_end,
1283  .capabilities = AV_CODEC_CAP_DR1,
1284  .flush = vc1_sprite_flush,
1285  .pix_fmts = (const enum AVPixelFormat[]) {
1288  },
1289 };
1290 #endif
1291 
1292 #if CONFIG_VC1IMAGE_DECODER
1293 const AVCodec ff_vc1image_decoder = {
1294  .name = "vc1image",
1295  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 Image v2"),
1296  .type = AVMEDIA_TYPE_VIDEO,
1297  .id = AV_CODEC_ID_VC1IMAGE,
1298  .priv_data_size = sizeof(VC1Context),
1299  .init = vc1_decode_init,
1300  .close = ff_vc1_decode_end,
1302  .capabilities = AV_CODEC_CAP_DR1,
1303  .flush = vc1_sprite_flush,
1304  .pix_fmts = (const enum AVPixelFormat[]) {
1307  },
1308 };
1309 #endif
error
static void error(const char *err)
Definition: target_bsf_fuzzer.c:30
PICT_FRAME
#define PICT_FRAME
Definition: mpegutils.h:39
VC1DSPContext::sprite_v_double_noscale
void(* sprite_v_double_noscale)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src2a, int alpha, int width)
Definition: vc1dsp.h:69
hwconfig.h
AVCodecContext::hwaccel
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:1465
AVCodec
AVCodec.
Definition: codec.h:197
VC1Context::zz_8x8
uint8_t zz_8x8[4][64]
Zigzag table for TT_8x8, permuted for IDCT.
Definition: vc1.h:237
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:187
VC1Context::new_sprite
int new_sprite
Frame decoding info for sprite modes.
Definition: vc1.h:375
AV_PIX_FMT_CUDA
@ AV_PIX_FMT_CUDA
HW acceleration through CUDA.
Definition: pixfmt.h:225
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
av_clip
#define av_clip
Definition: common.h:122
ff_msmpeg4_decode_init
int ff_msmpeg4_decode_init(AVCodecContext *avctx)
Definition: msmpeg4dec.c:294
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
VC1Context::two_sprites
int two_sprites
Definition: vc1.h:376
blockdsp.h
VC1Context
The VC1 Context.
Definition: vc1.h:173
AVERROR
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
PROGRESSIVE
@ PROGRESSIVE
in the bitstream is reported as 00b
Definition: vc1.h:149
AVCodecContext::colorspace
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:1066
vc1_decode_frame
static int vc1_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Decode a VC1/WMV3 frame.
Definition: vc1dec.c:620
ff_get_format
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
Definition: decode.c:1072
vc1_hwaccel_pixfmt_list_420
static enum AVPixelFormat vc1_hwaccel_pixfmt_list_420[]
Definition: vc1dec.c:1178
FFSWAP
#define FFSWAP(type, a, b)
Definition: common.h:108
VC1Context::cbp
uint32_t * cbp
Definition: vc1.h:388
VC1Context::end_mb_x
int end_mb_x
Horizontal macroblock limit (used only by mss2)
Definition: vc1.h:395
VC1Context::interlace
int interlace
Progressive/interlaced (RPTFTM syntax element)
Definition: vc1.h:199
vc1.h
ff_wmv3image_decoder
const AVCodec ff_wmv3image_decoder
AVCodecContext::err_recognition
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:1430
get_bits_long
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:546
ff_wmv1_scantable
const uint8_t ff_wmv1_scantable[WMV1_SCANTABLE_COUNT][64]
Definition: msmpeg4data.c:1806
ff_qpeldsp_init
av_cold void ff_qpeldsp_init(QpelDSPContext *c)
Definition: qpeldsp.c:783
get_bits_count
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:219
AVCodec::pix_fmts
enum AVPixelFormat * pix_fmts
array of supported pixel formats, or NULL if unknown, array is terminated by -1
Definition: codec.h:218
GetBitContext::size_in_bits
int size_in_bits
Definition: get_bits.h:68
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:111
Picture::field_picture
int field_picture
whether or not the picture was encoded in separate fields
Definition: mpegpicture.h:80
VC1Context::sprite_height
int sprite_height
Definition: vc1.h:378
VC1Context::left_blk_sh
int left_blk_sh
Definition: vc1.h:238
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:27
AVCodecContext::color_trc
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:1059
HWACCEL_DXVA2
#define HWACCEL_DXVA2(codec)
Definition: hwconfig.h:67
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:365
AVFrame::top_field_first
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:438
HWACCEL_D3D11VA2
#define HWACCEL_D3D11VA2(codec)
Definition: hwconfig.h:69
data
const char data[16]
Definition: mxf.c:142
VC1Context::cbp_base
uint32_t * cbp_base
Definition: vc1.h:388
VC1Context::mv_type_mb_plane
uint8_t * mv_type_mb_plane
bitplane for mv_type == (4MV)
Definition: vc1.h:284
AV_PIX_FMT_D3D11VA_VLD
@ AV_PIX_FMT_D3D11VA_VLD
HW decoding through Direct3D11 via old API, Picture.data[3] contains a ID3D11VideoDecoderOutputView p...
Definition: pixfmt.h:219
PICT_BOTTOM_FIELD
#define PICT_BOTTOM_FIELD
Definition: mpegutils.h:38
mpegvideo.h
MpegEncContext::avctx
struct AVCodecContext * avctx
Definition: mpegvideo.h:98
AVERROR_UNKNOWN
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:71
VC1Context::output_height
int output_height
Definition: vc1.h:378
VC1Context::luma_mv
int16_t((* luma_mv)[2]
Definition: vc1.h:390
init_get_bits
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:659
FF_DEBUG_PICT_INFO
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:1409
VC1Context::rptfrm
uint8_t rptfrm
Definition: vc1.h:310
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:31
find_next_marker
static const av_always_inline uint8_t * find_next_marker(const uint8_t *src, const uint8_t *end)
Find VC-1 marker in buffer.
Definition: vc1_common.h:59
ff_vc1_parse_frame_header
int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:627
skip_bits
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:467
get_bits
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:379
MpegEncContext::pict_type
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:212
AVCodecContext::codec
const struct AVCodec * codec
Definition: avcodec.h:510
AVCodecContext::skip_frame
enum AVDiscard skip_frame
Skip decoding for selected frames.
Definition: avcodec.h:1779
GetBitContext
Definition: get_bits.h:61
vc1_decode_init
static av_cold int vc1_decode_init(AVCodecContext *avctx)
Initialize a VC1/WMV3 decoder.
Definition: vc1dec.c:422
VC1Context::first_pic_header_flag
int first_pic_header_flag
Definition: vc1.h:365
ff_vc1_decode_sequence_header
int ff_vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
Decode Simple/Main Profiles sequence header.
Definition: vc1.c:277
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:581
ff_wmv3_decoder
const AVCodec ff_wmv3_decoder
HWACCEL_VDPAU
#define HWACCEL_VDPAU(codec)
Definition: hwconfig.h:75
AV_CODEC_FLAG_LOW_DELAY
#define AV_CODEC_FLAG_LOW_DELAY
Force low delay.
Definition: avcodec.h:302
AVCodecContext::coded_height
int coded_height
Definition: avcodec.h:689
VC1Context::n_allocated_blks
int n_allocated_blks
Definition: vc1.h:387
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:98
ff_mpv_common_end
void ff_mpv_common_end(MpegEncContext *s)
Definition: mpegvideo.c:1111
avassert.h
AVCodecContext::color_primaries
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:1052
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:181
av_cold
#define av_cold
Definition: attributes.h:90
ff_intrax8_common_init
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:694
VC1DSPContext::sprite_v_double_twoscale
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
msmpeg4data.h
decode
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
AVCodecContext::extradata_size
int extradata_size
Definition: avcodec.h:603
AVCodecContext::has_b_frames
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:785
VC1_CODE_SLICE
@ VC1_CODE_SLICE
Definition: vc1_common.h:36
width
#define width
VC1Context::mb_type
uint8_t * mb_type[3]
Definition: vc1.h:262
AV_PIX_FMT_DXVA2_VLD
@ AV_PIX_FMT_DXVA2_VLD
HW decoding through DXVA2, Picture.data[3] contains a LPDIRECT3DSURFACE9 pointer.
Definition: pixfmt.h:127
s
#define s(width, name)
Definition: cbs_vp9.c:257
VC1Context::res_sprite
int res_sprite
Simple/Main Profile sequence header.
Definition: vc1.h:181
VC1Context::res_fasttx
int res_fasttx
reserved, always 1
Definition: vc1.h:185
VC1Context::mv_f
uint8_t * mv_f[2]
0: MV obtained from same field, 1: opposite field
Definition: vc1.h:347
av_realloc_array
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:204
VC1DSPContext::sprite_h
void(* sprite_h)(uint8_t *dst, const uint8_t *src, int offset, int advance, int count)
Definition: vc1dsp.h:67
VC1Context::mb_type_base
uint8_t * mb_type_base
Definition: vc1.h:262
VC1Context::x8
IntraX8Context x8
Definition: vc1.h:175
VC1Context::over_flags_plane
uint8_t * over_flags_plane
Overflags bitplane.
Definition: vc1.h:322
ff_mpeg_er_frame_start
void ff_mpeg_er_frame_start(MpegEncContext *s)
Definition: mpeg_er.c:46
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:289
PROFILE_ADVANCED
@ PROFILE_ADVANCED
Definition: vc1_common.h:52
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:202
PICT_TOP_FIELD
#define PICT_TOP_FIELD
Definition: mpegutils.h:37
get_bits.h
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
AV_CODEC_ID_VC1IMAGE
@ AV_CODEC_ID_VC1IMAGE
Definition: codec_id.h:201
f
#define f(width, name)
Definition: cbs_vp9.c:255
AVCodecContext::codec_id
enum AVCodecID codec_id
Definition: avcodec.h:511
VC1Context::top_blk_sh
int top_blk_sh
Either 3 or 0, positions of l/t in blk[].
Definition: vc1.h:238
AVDISCARD_ALL
@ AVDISCARD_ALL
discard all
Definition: avcodec.h:213
AV_CODEC_ID_WMV3
@ AV_CODEC_ID_WMV3
Definition: codec_id.h:120
ff_vc1_init_common
av_cold void ff_vc1_init_common(VC1Context *v)
Init VC-1 specific tables and VC1Context members.
Definition: vc1.c:1698
VC1Context::forward_mb_plane
uint8_t * forward_mb_plane
bitplane for "forward" MBs
Definition: vc1.h:286
flush
static void flush(AVCodecContext *avctx)
Definition: aacdec_template.c:592
NULL
#define NULL
Definition: coverity.c:32
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
AVCodecContext::color_range
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:1073
VC1Context::direct_mb_plane
uint8_t * direct_mb_plane
bitplane for "direct" MBs
Definition: vc1.h:285
ff_vc1_init_transposed_scantables
av_cold void ff_vc1_init_transposed_scantables(VC1Context *v)
Definition: vc1dec.c:403
VC1Context::field_mode
int field_mode
1 for interlaced field pictures
Definition: vc1.h:349
ff_vc1_decode_blocks
void ff_vc1_decode_blocks(VC1Context *v)
Definition: vc1_block.c:2993
VC1Context::blk_mv_type_base
uint8_t * blk_mv_type_base
Definition: vc1.h:346
ff_intrax8_common_end
av_cold void ff_intrax8_common_end(IntraX8Context *w)
Destroy IntraX8 frame structure.
Definition: intrax8.c:734
vc1_unescape_buffer
static av_always_inline int vc1_unescape_buffer(const uint8_t *src, int size, uint8_t *dst)
Definition: vc1_common.h:70
VC1_CODE_SEQHDR
@ VC1_CODE_SEQHDR
Definition: vc1_common.h:40
VC1Context::block
int16_t(* block)[6][64]
Definition: vc1.h:386
AVHWAccel::end_frame
int(* end_frame)(AVCodecContext *avctx)
Called at the end of each frame or field picture.
Definition: avcodec.h:2240
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
get_bits1
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:498
profiles.h
IS_MARKER
#define IS_MARKER(state)
Definition: dca_parser.c:51
VC1_CODE_FIELD
@ VC1_CODE_FIELD
Definition: vc1_common.h:37
VC1_CODE_ENTRYPOINT
@ VC1_CODE_ENTRYPOINT
Definition: vc1_common.h:39
VC1Context::vc1dsp
VC1DSPContext vc1dsp
Definition: vc1.h:177
abs
#define abs(x)
Definition: cuda_runtime.h:35
VC1Context::luma_mv_base
int16_t(* luma_mv_base)[2]
Definition: vc1.h:390
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_EF_EXPLODE
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:1441
VC1_CODE_FRAME
@ VC1_CODE_FRAME
Definition: vc1_common.h:38
AVCodecContext::level
int level
level
Definition: avcodec.h:1757
AVCOL_RANGE_UNSPECIFIED
@ AVCOL_RANGE_UNSPECIFIED
Definition: pixfmt.h:542
VC1Context::h264chroma
H264ChromaContext h264chroma
Definition: vc1.h:176
c
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
VC1Context::fieldtx_plane
uint8_t * fieldtx_plane
Definition: vc1.h:343
ff_vc1_adv_interlaced_8x8_zz
const uint8_t ff_vc1_adv_interlaced_8x8_zz[64]
Definition: vc1data.c:1047
ff_dlog
#define ff_dlog(a,...)
Definition: tableprint_vlc.h:29
AVDISCARD_NONKEY
@ AVDISCARD_NONKEY
discard all frames except keyframes
Definition: avcodec.h:212
VC1Context::mv_f_next
uint8_t * mv_f_next[2]
Definition: vc1.h:348
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:386
ff_get_buffer
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1638
VC1Context::is_intra
uint8_t * is_intra
Definition: vc1.h:389
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
AV_CODEC_FLAG_GRAY
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:285
AVPacket::size
int size
Definition: packet.h:366
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
av_frame_ref
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:326
VC1Context::ttblk_base
int * ttblk_base
Definition: vc1.h:257
VC1Context::mb_off
int mb_off
Definition: vc1.h:361
ff_vc1_decoder
const AVCodec ff_vc1_decoder
Definition: vc1dec.c:1199
FFMAX
#define FFMAX(a, b)
Definition: common.h:103
size
int size
Definition: twinvq_data.h:10344
VC1Context::zzi_8x8
uint8_t zzi_8x8[64]
Definition: vc1.h:345
AV_RB32
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:96
VC1Context::sprite_width
int sprite_width
Definition: vc1.h:378
ff_mpeg_flush
void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo.c:2300
AVCodecHWConfigInternal
Definition: hwconfig.h:29
FFMIN
#define FFMIN(a, b)
Definition: common.h:105
vc1data.h
HWACCEL_D3D11VA
#define HWACCEL_D3D11VA(codec)
Definition: hwconfig.h:79
VC1DSPContext::sprite_v_single
void(* sprite_v_single)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset, int width)
Definition: vc1dsp.h:68
AV_PIX_FMT_D3D11
@ AV_PIX_FMT_D3D11
Hardware surfaces for Direct3D11.
Definition: pixfmt.h:303
ff_print_debug_info
void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
Definition: mpegvideo.c:1413
HWACCEL_NVDEC
#define HWACCEL_NVDEC(codec)
Definition: hwconfig.h:71
AV_PIX_FMT_VAAPI
@ AV_PIX_FMT_VAAPI
Hardware acceleration through VA-API, data[3] contains a VASurfaceID.
Definition: pixfmt.h:119
VC1Context::sr_rows
uint8_t * sr_rows[2][2]
Sprite resizer line cache.
Definition: vc1.h:379
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:192
AV_PIX_FMT_VDPAU
@ AV_PIX_FMT_VDPAU
HW acceleration through VDPAU, Picture.data[3] contains a VdpVideoSurface.
Definition: pixfmt.h:187
av_get_picture_type_char
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
AVFrame::interlaced_frame
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:433
MpegEncContext::current_picture_ptr
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:184
i
int i
Definition: input.c:407
VC1DSPContext::sprite_v_double_onescale
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
ff_vc1_decode_init_alloc_tables
av_cold int ff_vc1_decode_init_alloc_tables(VC1Context *v)
Definition: vc1dec.c:324
AVCodecContext::extradata
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:602
AVHWAccel::decode_slice
int(* decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size)
Callback for each slice.
Definition: avcodec.h:2229
ff_h264chroma_init
av_cold void ff_h264chroma_init(H264ChromaContext *c, int bit_depth)
Definition: h264chroma.c:41
ff_vc1_decode_entry_point
int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
Definition: vc1.c:509
ff_vc1_parse_frame_header_adv
int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:846
VC1Context::s
MpegEncContext s
Definition: vc1.h:174
av_frame_unref
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:436
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:243
VC1Context::pic_header_flag
int pic_header_flag
Definition: vc1.h:366
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:204
VC1Context::ttblk
int * ttblk
Transform type at the block level.
Definition: vc1.h:257
AV_CODEC_ID_VC1
@ AV_CODEC_ID_VC1
Definition: codec_id.h:119
AVCodecContext::height
int height
Definition: avcodec.h:674
VC1Context::is_intra_base
uint8_t * is_intra_base
Definition: vc1.h:389
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:711
ff_mpv_frame_end
void ff_mpv_frame_end(MpegEncContext *s)
Definition: mpegvideo.c:1405
AVCOL_RANGE_MPEG
@ AVCOL_RANGE_MPEG
Narrow or limited range content.
Definition: pixfmt.h:559
avcodec.h
msmpeg4.h
VC1Context::second_field
int second_field
Definition: vc1.h:351
ret
ret
Definition: filter_design.txt:187
VC1Context::sprite_output_frame
AVFrame * sprite_output_frame
Definition: vc1.h:377
VC1Context::output_width
int output_width
Definition: vc1.h:378
VC1Context::color_prim
int color_prim
8 bits, chroma coordinates of the color primaries
Definition: vc1.h:204
ff_mpv_frame_start
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:1181
VC1Context::mv_f_next_base
uint8_t * mv_f_next_base
Definition: vc1.h:348
AV_INPUT_BUFFER_PADDING_SIZE
#define AV_INPUT_BUFFER_PADDING_SIZE
Definition: avcodec.h:192
AVCodecContext
main external API structure.
Definition: avcodec.h:501
VC1Context::p_frame_skipped
int p_frame_skipped
Definition: vc1.h:382
VC1Context::cbpcy_vlc
VLC * cbpcy_vlc
CBPCY VLC table.
Definition: vc1.h:282
AV_PICTURE_TYPE_B
@ AV_PICTURE_TYPE_B
Bi-dir predicted.
Definition: avutil.h:276
Picture::f
struct AVFrame * f
Definition: mpegpicture.h:46
VC1Context::tff
uint8_t tff
Definition: vc1.h:310
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AVCodecContext::profile
int profile
profile
Definition: avcodec.h:1631
ff_vc1image_decoder
const AVCodec ff_vc1image_decoder
VC1Context::profile
int profile
Sequence header data for all Profiles TODO: choose between ints, uint8_ts and monobit flags.
Definition: vc1.h:216
AV_CODEC_CAP_DELAY
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: codec.h:77
ff_vc1_profiles
const AVProfile ff_vc1_profiles[]
Definition: profiles.c:131
VC1Context::matrix_coef
int matrix_coef
8 bits, Color primaries->YCbCr transform matrix
Definition: vc1.h:206
AVCodecContext::debug
int debug
debug
Definition: avcodec.h:1408
av_clip_uint16
#define av_clip_uint16
Definition: common.h:134
VC1Context::bi_type
int bi_type
Definition: vc1.h:383
AVHWAccel::start_frame
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:2201
VC1Context::mv_f_base
uint8_t * mv_f_base
Definition: vc1.h:347
AVCodecContext::coded_width
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:689
VC1Context::fcm
enum FrameCodingMode fcm
Frame decoding info for Advanced profile.
Definition: vc1.h:307
AV_PICTURE_TYPE_P
@ AV_PICTURE_TYPE_P
Predicted.
Definition: avutil.h:275
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVCodecContext::max_b_frames
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:761
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:39
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:48
alpha
static const int16_t alpha[]
Definition: ilbcdata.h:55
VC1Context::level
int level
Advanced Profile.
Definition: vc1.h:195
AVPacket
This structure stores compressed data.
Definition: packet.h:342
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:528
VC1Context::acpred_plane
uint8_t * acpred_plane
AC prediction flags bitplane.
Definition: vc1.h:320
ff_er_frame_end
void ff_er_frame_end(ERContext *s)
Definition: error_resilience.c:900
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
AV_PICTURE_TYPE_BI
@ AV_PICTURE_TYPE_BI
BI type.
Definition: avutil.h:280
HWACCEL_VAAPI
#define HWACCEL_VAAPI(codec)
Definition: hwconfig.h:73
mpeg_er.h
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:674
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
VC1Context::transfer_char
int transfer_char
8 bits, Opto-electronic transfer characteristics
Definition: vc1.h:205
ff_vc1_decode_end
av_cold int ff_vc1_decode_end(AVCodecContext *avctx)
Close a VC1/WMV3 decoder.
Definition: vc1dec.c:587
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
VC1Context::blk_mv_type
uint8_t * blk_mv_type
0: frame MV, 1: field MV (interlaced frame)
Definition: vc1.h:346
AV_CODEC_ID_WMV3IMAGE
@ AV_CODEC_ID_WMV3IMAGE
Definition: codec_id.h:200
transpose
#define transpose(x)
ff_blockdsp_init
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:60
AVDISCARD_NONREF
@ AVDISCARD_NONREF
discard all non reference
Definition: avcodec.h:209
VC1Context::blocks_off
int blocks_off
Definition: vc1.h:361
VC1_CODE_ENDOFSEQ
@ VC1_CODE_ENDOFSEQ
Definition: vc1_common.h:35
MpegEncContext
MpegEncContext.
Definition: mpegvideo.h:81
VC1Context::rff
uint8_t rff
Definition: vc1.h:310