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  return AVERROR(ENOMEM);
388  }
389 
390  ret = ff_intrax8_common_init(s->avctx, &v->x8, &s->idsp,
391  s->block, s->block_last_index,
392  s->mb_width, s->mb_height);
393  if (ret < 0)
394  goto error;
395 
396  return 0;
397 
398 error:
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 
437  if ((ret = ff_vc1_init_common(v)) < 0)
438  return ret;
439 
440  if (avctx->codec_id == AV_CODEC_ID_WMV3 || avctx->codec_id == AV_CODEC_ID_WMV3IMAGE) {
441  int count = 0;
442 
443  // looks like WMV3 has a sequence header stored in the extradata
444  // advanced sequence header may be before the first frame
445  // the last byte of the extradata is a version number, 1 for the
446  // samples we can decode
447 
448  init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
449 
450  if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0)
451  return ret;
452 
453  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE && !v->res_sprite) {
454  avpriv_request_sample(avctx, "Non sprite WMV3IMAGE");
455  return AVERROR_PATCHWELCOME;
456  }
457 
458  count = avctx->extradata_size*8 - get_bits_count(&gb);
459  if (count > 0) {
460  av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
461  count, get_bits_long(&gb, FFMIN(count, 32)));
462  } else if (count < 0) {
463  av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
464  }
465  } else { // VC1/WVC1/WVP2
466  const uint8_t *start = avctx->extradata;
467  uint8_t *end = avctx->extradata + avctx->extradata_size;
468  const uint8_t *next;
469  int size, buf2_size;
470  uint8_t *buf2 = NULL;
471  int seq_initialized = 0, ep_initialized = 0;
472 
473  if (avctx->extradata_size < 16) {
474  av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
475  return AVERROR_INVALIDDATA;
476  }
477 
479  if (!buf2)
480  return AVERROR(ENOMEM);
481 
482  start = find_next_marker(start, end); // in WVC1 extradata first byte is its size, but can be 0 in mkv
483  next = start;
484  for (; next < end; start = next) {
485  next = find_next_marker(start + 4, end);
486  size = next - start - 4;
487  if (size <= 0)
488  continue;
489  buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
490  init_get_bits(&gb, buf2, buf2_size * 8);
491  switch (AV_RB32(start)) {
492  case VC1_CODE_SEQHDR:
493  if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0) {
494  av_free(buf2);
495  return ret;
496  }
497  seq_initialized = 1;
498  break;
499  case VC1_CODE_ENTRYPOINT:
500  if ((ret = ff_vc1_decode_entry_point(avctx, v, &gb)) < 0) {
501  av_free(buf2);
502  return ret;
503  }
504  ep_initialized = 1;
505  break;
506  }
507  }
508  av_free(buf2);
509  if (!seq_initialized || !ep_initialized) {
510  av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
511  return AVERROR_INVALIDDATA;
512  }
513  v->res_sprite = (avctx->codec_id == AV_CODEC_ID_VC1IMAGE);
514  }
515 
516  avctx->profile = v->profile;
517  if (v->profile == PROFILE_ADVANCED)
518  avctx->level = v->level;
519 
520  if (!CONFIG_GRAY || !(avctx->flags & AV_CODEC_FLAG_GRAY))
521  avctx->pix_fmt = ff_get_format(avctx, avctx->codec->pix_fmts);
522  else {
523  avctx->pix_fmt = AV_PIX_FMT_GRAY8;
524  if (avctx->color_range == AVCOL_RANGE_UNSPECIFIED)
525  avctx->color_range = AVCOL_RANGE_MPEG;
526  }
527 
528  // ensure static VLC tables are initialized
529  if ((ret = ff_msmpeg4_decode_init(avctx)) < 0)
530  return ret;
531  if ((ret = ff_vc1_decode_init_alloc_tables(v)) < 0)
532  return ret;
533  // Hack to ensure the above functions will be called
534  // again once we know all necessary settings.
535  // That this is necessary might indicate a bug.
536  ff_vc1_decode_end(avctx);
537 
538  ff_blockdsp_init(&s->bdsp, avctx);
540  ff_qpeldsp_init(&s->qdsp);
541 
542  // Must happen after calling ff_vc1_decode_end
543  // to avoid de-allocating the sprite_output_frame
545  if (!v->sprite_output_frame)
546  return AVERROR(ENOMEM);
547 
548  avctx->has_b_frames = !!avctx->max_b_frames;
549 
550  if (v->color_prim == 1 || v->color_prim == 5 || v->color_prim == 6)
551  avctx->color_primaries = v->color_prim;
552  if (v->transfer_char == 1 || v->transfer_char == 7)
553  avctx->color_trc = v->transfer_char;
554  if (v->matrix_coef == 1 || v->matrix_coef == 6 || v->matrix_coef == 7)
555  avctx->colorspace = v->matrix_coef;
556 
557  s->mb_width = (avctx->coded_width + 15) >> 4;
558  s->mb_height = (avctx->coded_height + 15) >> 4;
559 
560  if (v->profile == PROFILE_ADVANCED || v->res_fasttx) {
562  } else {
563  memcpy(v->zz_8x8, ff_wmv1_scantable, 4*64);
564  v->left_blk_sh = 3;
565  v->top_blk_sh = 0;
566  }
567 
568  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
569  v->sprite_width = avctx->coded_width;
570  v->sprite_height = avctx->coded_height;
571 
572  avctx->coded_width = avctx->width = v->output_width;
573  avctx->coded_height = avctx->height = v->output_height;
574 
575  // prevent 16.16 overflows
576  if (v->sprite_width > 1 << 14 ||
577  v->sprite_height > 1 << 14 ||
578  v->output_width > 1 << 14 ||
579  v->output_height > 1 << 14) {
581  goto error;
582  }
583 
584  if ((v->sprite_width&1) || (v->sprite_height&1)) {
585  avpriv_request_sample(avctx, "odd sprites support");
587  goto error;
588  }
589  }
590  return 0;
591 error:
593  return ret;
594 }
595 
596 /** Close a VC1/WMV3 decoder
597  * @warning Initial try at using MpegEncContext stuff
598  */
600 {
601  VC1Context *v = avctx->priv_data;
602  int i;
603 
605 
606  for (i = 0; i < 4; i++)
607  av_freep(&v->sr_rows[i >> 1][i & 1]);
608  av_freep(&v->hrd_rate);
609  av_freep(&v->hrd_buffer);
610  ff_mpv_common_end(&v->s);
614  av_freep(&v->fieldtx_plane);
615  av_freep(&v->acpred_plane);
617  av_freep(&v->mb_type_base);
619  av_freep(&v->mv_f_base);
621  av_freep(&v->block);
622  av_freep(&v->cbp_base);
623  av_freep(&v->ttblk_base);
624  av_freep(&v->is_intra_base); // FIXME use v->mb_type[]
625  av_freep(&v->luma_mv_base);
627  return 0;
628 }
629 
630 
631 /** Decode a VC1/WMV3 frame
632  * @todo TODO: Handle VC-1 IDUs (Transport level?)
633  */
634 static int vc1_decode_frame(AVCodecContext *avctx, void *data,
635  int *got_frame, AVPacket *avpkt)
636 {
637  const uint8_t *buf = avpkt->data;
638  int buf_size = avpkt->size, n_slices = 0, i, ret;
639  VC1Context *v = avctx->priv_data;
640  MpegEncContext *s = &v->s;
641  AVFrame *pict = data;
642  uint8_t *buf2 = NULL;
643  const uint8_t *buf_start = buf, *buf_start_second_field = NULL;
644  int mb_height, n_slices1=-1;
645  struct {
646  uint8_t *buf;
647  GetBitContext gb;
648  int mby_start;
649  const uint8_t *rawbuf;
650  int raw_size;
651  } *slices = NULL, *tmp;
652 
653  v->second_field = 0;
654 
655  if(s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY)
656  s->low_delay = 1;
657 
658  /* no supplementary picture */
659  if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == VC1_CODE_ENDOFSEQ)) {
660  /* special case for last picture */
661  if (s->low_delay == 0 && s->next_picture_ptr) {
662  if ((ret = av_frame_ref(pict, s->next_picture_ptr->f)) < 0)
663  return ret;
664  s->next_picture_ptr = NULL;
665 
666  *got_frame = 1;
667  }
668 
669  return buf_size;
670  }
671 
672  //for advanced profile we may need to parse and unescape data
673  if (avctx->codec_id == AV_CODEC_ID_VC1 || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
674  int buf_size2 = 0;
675  buf2 = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
676  if (!buf2)
677  return AVERROR(ENOMEM);
678 
679  if (IS_MARKER(AV_RB32(buf))) { /* frame starts with marker and needs to be parsed */
680  const uint8_t *start, *end, *next;
681  int size;
682 
683  next = buf;
684  for (start = buf, end = buf + buf_size; next < end; start = next) {
685  next = find_next_marker(start + 4, end);
686  size = next - start - 4;
687  if (size <= 0) continue;
688  switch (AV_RB32(start)) {
689  case VC1_CODE_FRAME:
690  if (avctx->hwaccel)
691  buf_start = start;
692  buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
693  break;
694  case VC1_CODE_FIELD: {
695  int buf_size3;
696  if (avctx->hwaccel)
697  buf_start_second_field = start;
698  tmp = av_realloc_array(slices, sizeof(*slices), n_slices+1);
699  if (!tmp) {
700  ret = AVERROR(ENOMEM);
701  goto err;
702  }
703  slices = tmp;
704  slices[n_slices].buf = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
705  if (!slices[n_slices].buf) {
706  ret = AVERROR(ENOMEM);
707  goto err;
708  }
709  buf_size3 = vc1_unescape_buffer(start + 4, size,
710  slices[n_slices].buf);
711  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
712  buf_size3 << 3);
713  slices[n_slices].mby_start = avctx->coded_height + 31 >> 5;
714  slices[n_slices].rawbuf = start;
715  slices[n_slices].raw_size = size + 4;
716  n_slices1 = n_slices - 1; // index of the last slice of the first field
717  n_slices++;
718  break;
719  }
720  case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
721  buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
722  init_get_bits(&s->gb, buf2, buf_size2 * 8);
723  ff_vc1_decode_entry_point(avctx, v, &s->gb);
724  break;
725  case VC1_CODE_SLICE: {
726  int buf_size3;
727  tmp = av_realloc_array(slices, sizeof(*slices), n_slices+1);
728  if (!tmp) {
729  ret = AVERROR(ENOMEM);
730  goto err;
731  }
732  slices = tmp;
733  slices[n_slices].buf = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
734  if (!slices[n_slices].buf) {
735  ret = AVERROR(ENOMEM);
736  goto err;
737  }
738  buf_size3 = vc1_unescape_buffer(start + 4, size,
739  slices[n_slices].buf);
740  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
741  buf_size3 << 3);
742  slices[n_slices].mby_start = get_bits(&slices[n_slices].gb, 9);
743  slices[n_slices].rawbuf = start;
744  slices[n_slices].raw_size = size + 4;
745  n_slices++;
746  break;
747  }
748  }
749  }
750  } else if (v->interlace && ((buf[0] & 0xC0) == 0xC0)) { /* WVC1 interlaced stores both fields divided by marker */
751  const uint8_t *divider;
752  int buf_size3;
753 
754  divider = find_next_marker(buf, buf + buf_size);
755  if ((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD) {
756  av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
758  goto err;
759  } else { // found field marker, unescape second field
760  if (avctx->hwaccel)
761  buf_start_second_field = divider;
762  tmp = av_realloc_array(slices, sizeof(*slices), n_slices+1);
763  if (!tmp) {
764  ret = AVERROR(ENOMEM);
765  goto err;
766  }
767  slices = tmp;
768  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
769  if (!slices[n_slices].buf) {
770  ret = AVERROR(ENOMEM);
771  goto err;
772  }
773  buf_size3 = vc1_unescape_buffer(divider + 4, buf + buf_size - divider - 4, slices[n_slices].buf);
774  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
775  buf_size3 << 3);
776  slices[n_slices].mby_start = s->mb_height + 1 >> 1;
777  slices[n_slices].rawbuf = divider;
778  slices[n_slices].raw_size = buf + buf_size - divider;
779  n_slices1 = n_slices - 1;
780  n_slices++;
781  }
782  buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
783  } else {
784  buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
785  }
786  init_get_bits(&s->gb, buf2, buf_size2*8);
787  } else
788  init_get_bits(&s->gb, buf, buf_size*8);
789 
790  if (v->res_sprite) {
791  v->new_sprite = !get_bits1(&s->gb);
792  v->two_sprites = get_bits1(&s->gb);
793  /* res_sprite means a Windows Media Image stream, AV_CODEC_ID_*IMAGE means
794  we're using the sprite compositor. These are intentionally kept separate
795  so you can get the raw sprites by using the wmv3 decoder for WMVP or
796  the vc1 one for WVP2 */
797  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
798  if (v->new_sprite) {
799  // switch AVCodecContext parameters to those of the sprites
800  avctx->width = avctx->coded_width = v->sprite_width;
801  avctx->height = avctx->coded_height = v->sprite_height;
802  } else {
803  goto image;
804  }
805  }
806  }
807 
808  if (s->context_initialized &&
809  (s->width != avctx->coded_width ||
810  s->height != avctx->coded_height)) {
811  ff_vc1_decode_end(avctx);
812  }
813 
814  if (!s->context_initialized) {
815  if ((ret = ff_msmpeg4_decode_init(avctx)) < 0)
816  goto err;
817  if ((ret = ff_vc1_decode_init_alloc_tables(v)) < 0) {
819  goto err;
820  }
821 
822  s->low_delay = !avctx->has_b_frames || v->res_sprite;
823 
824  if (v->profile == PROFILE_ADVANCED) {
825  if(avctx->coded_width<=1 || avctx->coded_height<=1) {
827  goto err;
828  }
829  s->h_edge_pos = avctx->coded_width;
830  s->v_edge_pos = avctx->coded_height;
831  }
832  }
833 
834  // do parse frame header
835  v->pic_header_flag = 0;
836  v->first_pic_header_flag = 1;
837  if (v->profile < PROFILE_ADVANCED) {
838  if ((ret = ff_vc1_parse_frame_header(v, &s->gb)) < 0) {
839  goto err;
840  }
841  } else {
842  if ((ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
843  goto err;
844  }
845  }
846  v->first_pic_header_flag = 0;
847 
848  if (avctx->debug & FF_DEBUG_PICT_INFO)
849  av_log(v->s.avctx, AV_LOG_DEBUG, "pict_type: %c\n", av_get_picture_type_char(s->pict_type));
850 
851  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
852  && s->pict_type != AV_PICTURE_TYPE_I) {
853  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected I-frame\n");
855  goto err;
856  }
857  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
858  && v->field_mode) {
859  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected Frames not Fields\n");
861  goto err;
862  }
863  if ((s->mb_height >> v->field_mode) == 0) {
864  av_log(v->s.avctx, AV_LOG_ERROR, "image too short\n");
866  goto err;
867  }
868 
869  // for skipping the frame
870  s->current_picture.f->pict_type = s->pict_type;
871  s->current_picture.f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
872 
873  /* skip B-frames if we don't have reference frames */
874  if (!s->last_picture_ptr && (s->pict_type == AV_PICTURE_TYPE_B || s->droppable)) {
875  av_log(v->s.avctx, AV_LOG_DEBUG, "Skipping B frame without reference frames\n");
876  goto end;
877  }
878  if ((avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B) ||
879  (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I) ||
880  avctx->skip_frame >= AVDISCARD_ALL) {
881  goto end;
882  }
883 
884  if (s->next_p_frame_damaged) {
885  if (s->pict_type == AV_PICTURE_TYPE_B)
886  goto end;
887  else
888  s->next_p_frame_damaged = 0;
889  }
890 
891  if ((ret = ff_mpv_frame_start(s, avctx)) < 0) {
892  goto err;
893  }
894 
898 
899  // process pulldown flags
900  s->current_picture_ptr->f->repeat_pict = 0;
901  // Pulldown flags are only valid when 'broadcast' has been set.
902  // So ticks_per_frame will be 2
903  if (v->rff) {
904  // repeat field
905  s->current_picture_ptr->f->repeat_pict = 1;
906  } else if (v->rptfrm) {
907  // repeat frames
908  s->current_picture_ptr->f->repeat_pict = v->rptfrm * 2;
909  }
910 
911  s->me.qpel_put = s->qdsp.put_qpel_pixels_tab;
912  s->me.qpel_avg = s->qdsp.avg_qpel_pixels_tab;
913 
914  if (avctx->hwaccel) {
915  s->mb_y = 0;
916  if (v->field_mode && buf_start_second_field) {
917  // decode first field
918  s->picture_structure = PICT_BOTTOM_FIELD - v->tff;
919  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start, buf_start_second_field - buf_start)) < 0)
920  goto err;
921 
922  if (n_slices1 == -1) {
923  // no slices, decode the field as-is
924  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, buf_start_second_field - buf_start)) < 0)
925  goto err;
926  } else {
927  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, slices[0].rawbuf - buf_start)) < 0)
928  goto err;
929 
930  for (i = 0 ; i < n_slices1 + 1; i++) {
931  s->gb = slices[i].gb;
932  s->mb_y = slices[i].mby_start;
933 
934  v->pic_header_flag = get_bits1(&s->gb);
935  if (v->pic_header_flag) {
936  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
937  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
939  if (avctx->err_recognition & AV_EF_EXPLODE)
940  goto err;
941  continue;
942  }
943  }
944 
945  if ((ret = avctx->hwaccel->decode_slice(avctx, slices[i].rawbuf, slices[i].raw_size)) < 0)
946  goto err;
947  }
948  }
949 
950  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
951  goto err;
952 
953  // decode second field
954  s->gb = slices[n_slices1 + 1].gb;
955  s->mb_y = slices[n_slices1 + 1].mby_start;
956  s->picture_structure = PICT_TOP_FIELD + v->tff;
957  v->second_field = 1;
958  v->pic_header_flag = 0;
959  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
960  av_log(avctx, AV_LOG_ERROR, "parsing header for second field failed");
962  goto err;
963  }
965 
966  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start_second_field, (buf + buf_size) - buf_start_second_field)) < 0)
967  goto err;
968 
969  if (n_slices - n_slices1 == 2) {
970  // no slices, decode the field as-is
971  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start_second_field, (buf + buf_size) - buf_start_second_field)) < 0)
972  goto err;
973  } else {
974  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start_second_field, slices[n_slices1 + 2].rawbuf - buf_start_second_field)) < 0)
975  goto err;
976 
977  for (i = n_slices1 + 2; i < n_slices; i++) {
978  s->gb = slices[i].gb;
979  s->mb_y = slices[i].mby_start;
980 
981  v->pic_header_flag = get_bits1(&s->gb);
982  if (v->pic_header_flag) {
983  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
984  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
986  if (avctx->err_recognition & AV_EF_EXPLODE)
987  goto err;
988  continue;
989  }
990  }
991 
992  if ((ret = avctx->hwaccel->decode_slice(avctx, slices[i].rawbuf, slices[i].raw_size)) < 0)
993  goto err;
994  }
995  }
996 
997  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
998  goto err;
999  } else {
1000  s->picture_structure = PICT_FRAME;
1001  if ((ret = avctx->hwaccel->start_frame(avctx, buf_start, (buf + buf_size) - buf_start)) < 0)
1002  goto err;
1003 
1004  if (n_slices == 0) {
1005  // no slices, decode the frame as-is
1006  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, (buf + buf_size) - buf_start)) < 0)
1007  goto err;
1008  } else {
1009  // decode the frame part as the first slice
1010  if ((ret = avctx->hwaccel->decode_slice(avctx, buf_start, slices[0].rawbuf - buf_start)) < 0)
1011  goto err;
1012 
1013  // and process the slices as additional slices afterwards
1014  for (i = 0 ; i < n_slices; i++) {
1015  s->gb = slices[i].gb;
1016  s->mb_y = slices[i].mby_start;
1017 
1018  v->pic_header_flag = get_bits1(&s->gb);
1019  if (v->pic_header_flag) {
1020  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1021  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1023  if (avctx->err_recognition & AV_EF_EXPLODE)
1024  goto err;
1025  continue;
1026  }
1027  }
1028 
1029  if ((ret = avctx->hwaccel->decode_slice(avctx, slices[i].rawbuf, slices[i].raw_size)) < 0)
1030  goto err;
1031  }
1032  }
1033  if ((ret = avctx->hwaccel->end_frame(avctx)) < 0)
1034  goto err;
1035  }
1036  } else {
1037  int header_ret = 0;
1038 
1040 
1041  v->end_mb_x = s->mb_width;
1042  if (v->field_mode) {
1043  s->current_picture.f->linesize[0] <<= 1;
1044  s->current_picture.f->linesize[1] <<= 1;
1045  s->current_picture.f->linesize[2] <<= 1;
1046  s->linesize <<= 1;
1047  s->uvlinesize <<= 1;
1048  }
1049  mb_height = s->mb_height >> v->field_mode;
1050 
1051  av_assert0 (mb_height > 0);
1052 
1053  for (i = 0; i <= n_slices; i++) {
1054  if (i > 0 && slices[i - 1].mby_start >= mb_height) {
1055  if (v->field_mode <= 0) {
1056  av_log(v->s.avctx, AV_LOG_ERROR, "Slice %d starts beyond "
1057  "picture boundary (%d >= %d)\n", i,
1058  slices[i - 1].mby_start, mb_height);
1059  continue;
1060  }
1061  v->second_field = 1;
1062  av_assert0((s->mb_height & 1) == 0);
1063  v->blocks_off = s->b8_stride * (s->mb_height&~1);
1064  v->mb_off = s->mb_stride * s->mb_height >> 1;
1065  } else {
1066  v->second_field = 0;
1067  v->blocks_off = 0;
1068  v->mb_off = 0;
1069  }
1070  if (i) {
1071  v->pic_header_flag = 0;
1072  if (v->field_mode && i == n_slices1 + 2) {
1073  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1074  av_log(v->s.avctx, AV_LOG_ERROR, "Field header damaged\n");
1076  if (avctx->err_recognition & AV_EF_EXPLODE)
1077  goto err;
1078  continue;
1079  }
1080  } else if (get_bits1(&s->gb)) {
1081  v->pic_header_flag = 1;
1082  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1083  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1085  if (avctx->err_recognition & AV_EF_EXPLODE)
1086  goto err;
1087  continue;
1088  }
1089  }
1090  }
1091  if (header_ret < 0)
1092  continue;
1093  s->start_mb_y = (i == 0) ? 0 : FFMAX(0, slices[i-1].mby_start % mb_height);
1094  if (!v->field_mode || v->second_field)
1095  s->end_mb_y = (i == n_slices ) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1096  else {
1097  if (i >= n_slices) {
1098  av_log(v->s.avctx, AV_LOG_ERROR, "first field slice count too large\n");
1099  continue;
1100  }
1101  s->end_mb_y = (i == n_slices1 + 1) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1102  }
1103  if (s->end_mb_y <= s->start_mb_y) {
1104  av_log(v->s.avctx, AV_LOG_ERROR, "end mb y %d %d invalid\n", s->end_mb_y, s->start_mb_y);
1105  continue;
1106  }
1107  if (((s->pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) ||
1108  (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type)) &&
1109  !v->cbpcy_vlc) {
1110  av_log(v->s.avctx, AV_LOG_ERROR, "missing cbpcy_vlc\n");
1111  continue;
1112  }
1114  if (i != n_slices) {
1115  s->gb = slices[i].gb;
1116  }
1117  }
1118  if (v->field_mode) {
1119  v->second_field = 0;
1120  s->current_picture.f->linesize[0] >>= 1;
1121  s->current_picture.f->linesize[1] >>= 1;
1122  s->current_picture.f->linesize[2] >>= 1;
1123  s->linesize >>= 1;
1124  s->uvlinesize >>= 1;
1126  FFSWAP(uint8_t *, v->mv_f_next[0], v->mv_f[0]);
1127  FFSWAP(uint8_t *, v->mv_f_next[1], v->mv_f[1]);
1128  }
1129  }
1130  ff_dlog(s->avctx, "Consumed %i/%i bits\n",
1131  get_bits_count(&s->gb), s->gb.size_in_bits);
1132 // if (get_bits_count(&s->gb) > buf_size * 8)
1133 // return -1;
1134  if(s->er.error_occurred && s->pict_type == AV_PICTURE_TYPE_B) {
1136  goto err;
1137  }
1138  if ( !v->field_mode
1139  && avctx->codec_id != AV_CODEC_ID_WMV3IMAGE
1140  && avctx->codec_id != AV_CODEC_ID_VC1IMAGE)
1141  ff_er_frame_end(&s->er);
1142  }
1143 
1145 
1146  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
1147 image:
1148  avctx->width = avctx->coded_width = v->output_width;
1149  avctx->height = avctx->coded_height = v->output_height;
1150  if (avctx->skip_frame >= AVDISCARD_NONREF)
1151  goto end;
1152 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
1153  if ((ret = vc1_decode_sprites(v, &s->gb)) < 0)
1154  goto err;
1155 #endif
1156  if ((ret = av_frame_ref(pict, v->sprite_output_frame)) < 0)
1157  goto err;
1158  *got_frame = 1;
1159  } else {
1160  if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
1161  if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
1162  goto err;
1163  if (!v->field_mode)
1164  ff_print_debug_info(s, s->current_picture_ptr, pict);
1165  *got_frame = 1;
1166  } else if (s->last_picture_ptr) {
1167  if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
1168  goto err;
1169  if (!v->field_mode)
1170  ff_print_debug_info(s, s->last_picture_ptr, pict);
1171  *got_frame = 1;
1172  }
1173  }
1174 
1175 end:
1176  av_free(buf2);
1177  for (i = 0; i < n_slices; i++)
1178  av_free(slices[i].buf);
1179  av_free(slices);
1180  return buf_size;
1181 
1182 err:
1183  av_free(buf2);
1184  for (i = 0; i < n_slices; i++)
1185  av_free(slices[i].buf);
1186  av_free(slices);
1187  return ret;
1188 }
1189 
1190 
1192 #if CONFIG_VC1_DXVA2_HWACCEL
1194 #endif
1195 #if CONFIG_VC1_D3D11VA_HWACCEL
1198 #endif
1199 #if CONFIG_VC1_NVDEC_HWACCEL
1201 #endif
1202 #if CONFIG_VC1_VAAPI_HWACCEL
1204 #endif
1205 #if CONFIG_VC1_VDPAU_HWACCEL
1207 #endif
1210 };
1211 
1213  .name = "vc1",
1214  .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"),
1215  .type = AVMEDIA_TYPE_VIDEO,
1216  .id = AV_CODEC_ID_VC1,
1217  .priv_data_size = sizeof(VC1Context),
1218  .init = vc1_decode_init,
1219  .close = ff_vc1_decode_end,
1221  .flush = ff_mpeg_flush,
1222  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1224  .hw_configs = (const AVCodecHWConfigInternal*[]) {
1225 #if CONFIG_VC1_DXVA2_HWACCEL
1226  HWACCEL_DXVA2(vc1),
1227 #endif
1228 #if CONFIG_VC1_D3D11VA_HWACCEL
1229  HWACCEL_D3D11VA(vc1),
1230 #endif
1231 #if CONFIG_VC1_D3D11VA2_HWACCEL
1232  HWACCEL_D3D11VA2(vc1),
1233 #endif
1234 #if CONFIG_VC1_NVDEC_HWACCEL
1235  HWACCEL_NVDEC(vc1),
1236 #endif
1237 #if CONFIG_VC1_VAAPI_HWACCEL
1238  HWACCEL_VAAPI(vc1),
1239 #endif
1240 #if CONFIG_VC1_VDPAU_HWACCEL
1241  HWACCEL_VDPAU(vc1),
1242 #endif
1243  NULL
1244  },
1246 };
1247 
1248 #if CONFIG_WMV3_DECODER
1250  .name = "wmv3",
1251  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9"),
1252  .type = AVMEDIA_TYPE_VIDEO,
1253  .id = AV_CODEC_ID_WMV3,
1254  .priv_data_size = sizeof(VC1Context),
1255  .init = vc1_decode_init,
1256  .close = ff_vc1_decode_end,
1258  .flush = ff_mpeg_flush,
1259  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1261  .hw_configs = (const AVCodecHWConfigInternal*[]) {
1262 #if CONFIG_WMV3_DXVA2_HWACCEL
1263  HWACCEL_DXVA2(wmv3),
1264 #endif
1265 #if CONFIG_WMV3_D3D11VA_HWACCEL
1266  HWACCEL_D3D11VA(wmv3),
1267 #endif
1268 #if CONFIG_WMV3_D3D11VA2_HWACCEL
1269  HWACCEL_D3D11VA2(wmv3),
1270 #endif
1271 #if CONFIG_WMV3_NVDEC_HWACCEL
1272  HWACCEL_NVDEC(wmv3),
1273 #endif
1274 #if CONFIG_WMV3_VAAPI_HWACCEL
1275  HWACCEL_VAAPI(wmv3),
1276 #endif
1277 #if CONFIG_WMV3_VDPAU_HWACCEL
1278  HWACCEL_VDPAU(wmv3),
1279 #endif
1280  NULL
1281  },
1283 };
1284 #endif
1285 
1286 #if CONFIG_WMV3IMAGE_DECODER
1288  .name = "wmv3image",
1289  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 Image"),
1290  .type = AVMEDIA_TYPE_VIDEO,
1291  .id = AV_CODEC_ID_WMV3IMAGE,
1292  .priv_data_size = sizeof(VC1Context),
1293  .init = vc1_decode_init,
1294  .close = ff_vc1_decode_end,
1296  .capabilities = AV_CODEC_CAP_DR1,
1297  .flush = vc1_sprite_flush,
1298  .pix_fmts = (const enum AVPixelFormat[]) {
1301  },
1302 };
1303 #endif
1304 
1305 #if CONFIG_VC1IMAGE_DECODER
1307  .name = "vc1image",
1308  .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 Image v2"),
1309  .type = AVMEDIA_TYPE_VIDEO,
1310  .id = AV_CODEC_ID_VC1IMAGE,
1311  .priv_data_size = sizeof(VC1Context),
1312  .init = vc1_decode_init,
1313  .close = ff_vc1_decode_end,
1315  .capabilities = AV_CODEC_CAP_DR1,
1316  .flush = vc1_sprite_flush,
1317  .pix_fmts = (const enum AVPixelFormat[]) {
1320  },
1321 };
1322 #endif
error
static void error(const char *err)
Definition: target_bsf_fuzzer.c:29
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:1690
AVCodec
AVCodec.
Definition: codec.h:190
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:182
VC1Context::new_sprite
int new_sprite
Frame decoding info for sprite modes.
Definition: vc1.h:377
AV_PIX_FMT_CUDA
@ AV_PIX_FMT_CUDA
HW acceleration through CUDA.
Definition: pixfmt.h:235
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
ff_msmpeg4_decode_init
int ff_msmpeg4_decode_init(AVCodecContext *avctx)
Definition: msmpeg4dec.c:301
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
VC1Context::two_sprites
int two_sprites
Definition: vc1.h:378
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:1154
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:634
ff_get_format
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
Definition: decode.c:1279
vc1_hwaccel_pixfmt_list_420
static enum AVPixelFormat vc1_hwaccel_pixfmt_list_420[]
Definition: vc1dec.c:1191
FFSWAP
#define FFSWAP(type, a, b)
Definition: common.h:99
VC1Context::cbp
uint32_t * cbp
Definition: vc1.h:390
VC1Context::end_mb_x
int end_mb_x
Horizontal macroblock limit (used only by mss2)
Definition: vc1.h:397
VC1Context::interlace
int interlace
Progressive/interlaced (RPTFTM syntax element)
Definition: vc1.h:199
vc1.h
AVCodecContext::err_recognition
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:1655
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:1809
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:211
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:203
Picture::field_picture
int field_picture
whether or not the picture was encoded in separate fields
Definition: mpegpicture.h:79
VC1Context::sprite_height
int sprite_height
Definition: vc1.h:380
end
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:92
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:300
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:26
AVCodecContext::color_trc
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:1147
HWACCEL_DXVA2
#define HWACCEL_DXVA2(codec)
Definition: hwconfig.h:67
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:355
AVFrame::top_field_first
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:452
HWACCEL_D3D11VA2
#define HWACCEL_D3D11VA2(codec)
Definition: hwconfig.h:69
data
const char data[16]
Definition: mxf.c:91
VC1Context::cbp_base
uint32_t * cbp_base
Definition: vc1.h:390
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:229
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:380
VC1Context::luma_mv
int16_t((* luma_mv)[2]
Definition: vc1.h:392
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:1612
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:314
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:626
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:535
AVCodecContext::skip_frame
enum AVDiscard skip_frame
Skip decoding for selected frames.
Definition: avcodec.h:2004
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:367
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:276
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:606
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:325
AVCodecContext::coded_height
int coded_height
Definition: avcodec.h:714
VC1Context::n_allocated_blks
int n_allocated_blks
Definition: vc1.h:389
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:190
ff_mpv_common_end
void ff_mpv_common_end(MpegEncContext *s)
Definition: mpegvideo.c:1138
avassert.h
AVCodecContext::color_primaries
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:1140
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
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:728
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:628
AVCodecContext::has_b_frames
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:816
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:137
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:349
av_realloc_array
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:198
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:275
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:197
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:536
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:236
AV_CODEC_ID_WMV3
@ AV_CODEC_ID_WMV3
Definition: codec_id.h:120
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:500
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:1161
VC1Context::direct_mb_plane
uint8_t * direct_mb_plane
bitplane for "direct" MBs
Definition: vc1.h:285
ff_wmv3_decoder
AVCodec ff_wmv3_decoder
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:351
ff_vc1_decode_blocks
void ff_vc1_decode_blocks(VC1Context *v)
Definition: vc1_block.c:3005
VC1Context::blk_mv_type_base
uint8_t * blk_mv_type_base
Definition: vc1.h:348
ff_intrax8_common_end
av_cold void ff_intrax8_common_end(IntraX8Context *w)
Destroy IntraX8 frame structure.
Definition: intrax8.c:768
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:388
AVHWAccel::end_frame
int(* end_frame)(AVCodecContext *avctx)
Called at the end of each frame or field picture.
Definition: avcodec.h:2511
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:392
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:1666
VC1_CODE_FRAME
@ VC1_CODE_FRAME
Definition: vc1_common.h:38
AVCodecContext::level
int level
level
Definition: avcodec.h:1982
AVCOL_RANGE_UNSPECIFIED
@ AVCOL_RANGE_UNSPECIFIED
Definition: pixfmt.h:533
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:345
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:235
VC1Context::mv_f_next
uint8_t * mv_f_next[2]
Definition: vc1.h:350
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:383
ff_get_buffer
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1854
VC1Context::is_intra
uint8_t * is_intra
Definition: vc1.h:391
ff_vc1image_decoder
AVCodec ff_vc1image_decoder
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:50
AV_CODEC_FLAG_GRAY
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:308
AVPacket::size
int size
Definition: packet.h:356
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:188
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:444
VC1Context::ttblk_base
int * ttblk_base
Definition: vc1.h:257
VC1Context::mb_off
int mb_off
Definition: vc1.h:363
FFMAX
#define FFMAX(a, b)
Definition: common.h:94
ff_vc1_init_common
av_cold int ff_vc1_init_common(VC1Context *v)
Init VC-1 specific tables and VC1Context members.
Definition: vc1.c:1589
ff_vc1_decoder
AVCodec ff_vc1_decoder
Definition: vc1dec.c:1212
size
int size
Definition: twinvq_data.h:11134
VC1Context::zzi_8x8
uint8_t zzi_8x8[64]
Definition: vc1.h:347
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:92
VC1Context::sprite_width
int sprite_width
Definition: vc1.h:380
ff_mpeg_flush
void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo.c:2312
AVCodecHWConfigInternal
Definition: hwconfig.h:29
FFMIN
#define FFMIN(a, b)
Definition: common.h:96
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:313
ff_print_debug_info
void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
Definition: mpegvideo.c:1444
HWACCEL_NVDEC
#define HWACCEL_NVDEC(codec)
Definition: hwconfig.h:71
AV_PIX_FMT_VAAPI
@ AV_PIX_FMT_VAAPI
Definition: pixfmt.h:122
VC1Context::sr_rows
uint8_t * sr_rows[2][2]
Sprite resizer line cache.
Definition: vc1.h:381
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
AV_PIX_FMT_VDPAU
@ AV_PIX_FMT_VDPAU
HW acceleration through VDPAU, Picture.data[3] contains a VdpVideoSurface.
Definition: pixfmt.h:197
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:447
MpegEncContext::current_picture_ptr
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:184
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_wmv3image_decoder
AVCodec ff_wmv3image_decoder
ff_vc1_decode_init_alloc_tables
av_cold int ff_vc1_decode_init_alloc_tables(VC1Context *v)
Definition: vc1dec.c:324
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AVCodecContext::extradata
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:627
AVHWAccel::decode_slice
int(* decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size)
Callback for each slice.
Definition: avcodec.h:2500
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:508
VC1Context::hrd_rate
uint16_t * hrd_rate
Definition: vc1.h:325
ff_vc1_parse_frame_header_adv
int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:850
VC1Context::s
MpegEncContext s
Definition: vc1.h:174
uint8_t
uint8_t
Definition: audio_convert.c:194
av_frame_unref
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:554
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:237
VC1Context::pic_header_flag
int pic_header_flag
Definition: vc1.h:368
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:197
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:699
VC1Context::is_intra_base
uint8_t * is_intra_base
Definition: vc1.h:391
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:736
ff_mpv_frame_end
void ff_mpv_frame_end(MpegEncContext *s)
Definition: mpegvideo.c:1436
AVCOL_RANGE_MPEG
@ AVCOL_RANGE_MPEG
the normal 219*2^(n-8) "MPEG" YUV ranges
Definition: pixfmt.h:534
avcodec.h
msmpeg4.h
VC1Context::second_field
int second_field
Definition: vc1.h:353
ret
ret
Definition: filter_design.txt:187
VC1Context::sprite_output_frame
AVFrame * sprite_output_frame
Definition: vc1.h:379
VC1Context::output_width
int output_width
Definition: vc1.h:380
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:1212
VC1Context::mv_f_next_base
uint8_t * mv_f_next_base
Definition: vc1.h:350
AV_INPUT_BUFFER_PADDING_SIZE
#define AV_INPUT_BUFFER_PADDING_SIZE
Definition: avcodec.h:215
AVCodecContext
main external API structure.
Definition: avcodec.h:526
VC1Context::p_frame_skipped
int p_frame_skipped
Definition: vc1.h:384
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:1859
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:75
ff_vc1_profiles
const AVProfile ff_vc1_profiles[]
Definition: profiles.c:125
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:1611
VC1Context::hrd_buffer
uint16_t * hrd_buffer
Definition: vc1.h:325
VC1Context::bi_type
int bi_type
Definition: vc1.h:385
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:2472
VC1Context::mv_f_base
uint8_t * mv_f_base
Definition: vc1.h:349
AVCodecContext::coded_width
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:714
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:786
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:332
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:553
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:699
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:331
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:599
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:348
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:232
VC1Context::blocks_off
int blocks_off
Definition: vc1.h:363
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