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 "config_components.h"
30 
31 #include "avcodec.h"
32 #include "blockdsp.h"
33 #include "codec_internal.h"
34 #include "decode.h"
35 #include "get_bits.h"
36 #include "hwaccel_internal.h"
37 #include "hwconfig.h"
38 #include "mpeg_er.h"
39 #include "mpegutils.h"
40 #include "mpegvideo.h"
41 #include "mpegvideodec.h"
42 #include "msmpeg4_vc1_data.h"
43 #include "profiles.h"
44 #include "simple_idct.h"
45 #include "vc1.h"
46 #include "vc1data.h"
47 #include "vc1_vlc_data.h"
48 #include "libavutil/attributes.h"
49 #include "libavutil/avassert.h"
50 #include "libavutil/imgutils.h"
51 #include "libavutil/mem.h"
52 #include "libavutil/thread.h"
53 
54 
56 #if CONFIG_VC1_DXVA2_HWACCEL
58 #endif
59 #if CONFIG_VC1_D3D11VA_HWACCEL
62 #endif
63 #if CONFIG_VC1_D3D12VA_HWACCEL
65 #endif
66 #if CONFIG_VC1_NVDEC_HWACCEL
68 #endif
69 #if CONFIG_VC1_VAAPI_HWACCEL
71 #endif
72 #if CONFIG_VC1_VDPAU_HWACCEL
74 #endif
77 };
78 
79 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
80 
81 typedef struct SpriteData {
82  /**
83  * Transform coefficients for both sprites in 16.16 fixed point format,
84  * in the order they appear in the bitstream:
85  * x scale
86  * rotation 1 (unused)
87  * x offset
88  * rotation 2 (unused)
89  * y scale
90  * y offset
91  * alpha
92  */
93  int coefs[2][7];
94 
95  int effect_type, effect_flag;
96  int effect_pcount1, effect_pcount2; ///< amount of effect parameters stored in effect_params
97  int effect_params1[15], effect_params2[10]; ///< effect parameters in 16.16 fixed point format
98 } SpriteData;
99 
100 static inline int get_fp_val(GetBitContext* gb)
101 {
102  return (get_bits_long(gb, 30) - (1 << 29)) << 1;
103 }
104 
105 static void vc1_sprite_parse_transform(GetBitContext* gb, int c[7])
106 {
107  c[1] = c[3] = 0;
108 
109  switch (get_bits(gb, 2)) {
110  case 0:
111  c[0] = 1 << 16;
112  c[2] = get_fp_val(gb);
113  c[4] = 1 << 16;
114  break;
115  case 1:
116  c[0] = c[4] = get_fp_val(gb);
117  c[2] = get_fp_val(gb);
118  break;
119  case 2:
120  c[0] = get_fp_val(gb);
121  c[2] = get_fp_val(gb);
122  c[4] = get_fp_val(gb);
123  break;
124  case 3:
125  c[0] = get_fp_val(gb);
126  c[1] = get_fp_val(gb);
127  c[2] = get_fp_val(gb);
128  c[3] = get_fp_val(gb);
129  c[4] = get_fp_val(gb);
130  break;
131  }
132  c[5] = get_fp_val(gb);
133  if (get_bits1(gb))
134  c[6] = get_fp_val(gb);
135  else
136  c[6] = 1 << 16;
137 }
138 
139 static int vc1_parse_sprites(VC1Context *v, GetBitContext* gb, SpriteData* sd)
140 {
141  AVCodecContext *avctx = v->s.avctx;
142  int sprite, i;
143 
144  for (sprite = 0; sprite <= v->two_sprites; sprite++) {
145  vc1_sprite_parse_transform(gb, sd->coefs[sprite]);
146  if (sd->coefs[sprite][1] || sd->coefs[sprite][3])
147  avpriv_request_sample(avctx, "Non-zero rotation coefficients");
148  av_log(avctx, AV_LOG_DEBUG, sprite ? "S2:" : "S1:");
149  for (i = 0; i < 7; i++)
150  av_log(avctx, AV_LOG_DEBUG, " %d.%.3d",
151  sd->coefs[sprite][i] / (1<<16),
152  (abs(sd->coefs[sprite][i]) & 0xFFFF) * 1000 / (1 << 16));
153  av_log(avctx, AV_LOG_DEBUG, "\n");
154  }
155 
156  skip_bits(gb, 2);
157  if (sd->effect_type = get_bits_long(gb, 30)) {
158  switch (sd->effect_pcount1 = get_bits(gb, 4)) {
159  case 7:
160  vc1_sprite_parse_transform(gb, sd->effect_params1);
161  break;
162  case 14:
163  vc1_sprite_parse_transform(gb, sd->effect_params1);
164  vc1_sprite_parse_transform(gb, sd->effect_params1 + 7);
165  break;
166  default:
167  for (i = 0; i < sd->effect_pcount1; i++)
168  sd->effect_params1[i] = get_fp_val(gb);
169  }
170  if (sd->effect_type != 13 || sd->effect_params1[0] != sd->coefs[0][6]) {
171  // effect 13 is simple alpha blending and matches the opacity above
172  av_log(avctx, AV_LOG_DEBUG, "Effect: %d; params: ", sd->effect_type);
173  for (i = 0; i < sd->effect_pcount1; i++)
174  av_log(avctx, AV_LOG_DEBUG, " %d.%.2d",
175  sd->effect_params1[i] / (1 << 16),
176  (abs(sd->effect_params1[i]) & 0xFFFF) * 1000 / (1 << 16));
177  av_log(avctx, AV_LOG_DEBUG, "\n");
178  }
179 
180  sd->effect_pcount2 = get_bits(gb, 16);
181  if (sd->effect_pcount2 > 10) {
182  av_log(avctx, AV_LOG_ERROR, "Too many effect parameters\n");
183  return AVERROR_INVALIDDATA;
184  } else if (sd->effect_pcount2) {
185  i = -1;
186  av_log(avctx, AV_LOG_DEBUG, "Effect params 2: ");
187  while (++i < sd->effect_pcount2) {
188  sd->effect_params2[i] = get_fp_val(gb);
189  av_log(avctx, AV_LOG_DEBUG, " %d.%.2d",
190  sd->effect_params2[i] / (1 << 16),
191  (abs(sd->effect_params2[i]) & 0xFFFF) * 1000 / (1 << 16));
192  }
193  av_log(avctx, AV_LOG_DEBUG, "\n");
194  }
195  }
196  if (sd->effect_flag = get_bits1(gb))
197  av_log(avctx, AV_LOG_DEBUG, "Effect flag set\n");
198 
199  if (get_bits_count(gb) >= gb->size_in_bits +
200  (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE ? 64 : 0)) {
201  av_log(avctx, AV_LOG_ERROR, "Buffer overrun\n");
202  return AVERROR_INVALIDDATA;
203  }
204  if (get_bits_count(gb) < gb->size_in_bits - 8)
205  av_log(avctx, AV_LOG_WARNING, "Buffer not fully read\n");
206 
207  return 0;
208 }
209 
210 static void vc1_draw_sprites(VC1Context *v, SpriteData* sd)
211 {
212  int i, plane, row, sprite;
213  int sr_cache[2][2] = { { -1, -1 }, { -1, -1 } };
214  uint8_t* src_h[2][2];
215  int xoff[2], xadv[2], yoff[2], yadv[2], alpha;
216  int ysub[2];
217  MpegEncContext *s = &v->s;
218 
219  for (i = 0; i <= v->two_sprites; i++) {
220  xoff[i] = av_clip(sd->coefs[i][2], 0, v->sprite_width-1 << 16);
221  xadv[i] = sd->coefs[i][0];
222  if (xadv[i] != 1<<16 || (v->sprite_width << 16) - (v->output_width << 16) - xoff[i])
223  xadv[i] = av_clip(xadv[i], 0, ((v->sprite_width<<16) - xoff[i] - 1) / v->output_width);
224 
225  yoff[i] = av_clip(sd->coefs[i][5], 0, v->sprite_height-1 << 16);
226  yadv[i] = av_clip(sd->coefs[i][4], 0, ((v->sprite_height << 16) - yoff[i]) / v->output_height);
227  }
228  alpha = av_clip_uint16(sd->coefs[1][6]);
229 
230  for (plane = 0; plane < (CONFIG_GRAY && s->avctx->flags & AV_CODEC_FLAG_GRAY ? 1 : 3); plane++) {
231  int width = v->output_width>>!!plane;
232 
233  for (row = 0; row < v->output_height>>!!plane; row++) {
234  uint8_t *dst = v->sprite_output_frame->data[plane] +
235  v->sprite_output_frame->linesize[plane] * row;
236 
237  for (sprite = 0; sprite <= v->two_sprites; sprite++) {
238  uint8_t *iplane = s->current_picture.f->data[plane];
239  int iline = s->current_picture.f->linesize[plane];
240  int ycoord = yoff[sprite] + yadv[sprite] * row;
241  int yline = ycoord >> 16;
242  int next_line;
243  ysub[sprite] = ycoord & 0xFFFF;
244  if (sprite) {
245  iplane = s->last_picture.f->data[plane];
246  iline = s->last_picture.f->linesize[plane];
247  }
248  next_line = FFMIN(yline + 1, (v->sprite_height >> !!plane) - 1) * iline;
249  if (!(xoff[sprite] & 0xFFFF) && xadv[sprite] == 1 << 16) {
250  src_h[sprite][0] = iplane + (xoff[sprite] >> 16) + yline * iline;
251  if (ysub[sprite])
252  src_h[sprite][1] = iplane + (xoff[sprite] >> 16) + next_line;
253  } else {
254  if (sr_cache[sprite][0] != yline) {
255  if (sr_cache[sprite][1] == yline) {
256  FFSWAP(uint8_t*, v->sr_rows[sprite][0], v->sr_rows[sprite][1]);
257  FFSWAP(int, sr_cache[sprite][0], sr_cache[sprite][1]);
258  } else {
259  v->vc1dsp.sprite_h(v->sr_rows[sprite][0], iplane + yline * iline, xoff[sprite], xadv[sprite], width);
260  sr_cache[sprite][0] = yline;
261  }
262  }
263  if (ysub[sprite] && sr_cache[sprite][1] != yline + 1) {
264  v->vc1dsp.sprite_h(v->sr_rows[sprite][1],
265  iplane + next_line, xoff[sprite],
266  xadv[sprite], width);
267  sr_cache[sprite][1] = yline + 1;
268  }
269  src_h[sprite][0] = v->sr_rows[sprite][0];
270  src_h[sprite][1] = v->sr_rows[sprite][1];
271  }
272  }
273 
274  if (!v->two_sprites) {
275  if (ysub[0]) {
276  v->vc1dsp.sprite_v_single(dst, src_h[0][0], src_h[0][1], ysub[0], width);
277  } else {
278  memcpy(dst, src_h[0][0], width);
279  }
280  } else {
281  if (ysub[0] && ysub[1]) {
282  v->vc1dsp.sprite_v_double_twoscale(dst, src_h[0][0], src_h[0][1], ysub[0],
283  src_h[1][0], src_h[1][1], ysub[1], alpha, width);
284  } else if (ysub[0]) {
285  v->vc1dsp.sprite_v_double_onescale(dst, src_h[0][0], src_h[0][1], ysub[0],
286  src_h[1][0], alpha, width);
287  } else if (ysub[1]) {
288  v->vc1dsp.sprite_v_double_onescale(dst, src_h[1][0], src_h[1][1], ysub[1],
289  src_h[0][0], (1<<16)-1-alpha, width);
290  } else {
291  v->vc1dsp.sprite_v_double_noscale(dst, src_h[0][0], src_h[1][0], alpha, width);
292  }
293  }
294  }
295 
296  if (!plane) {
297  for (i = 0; i <= v->two_sprites; i++) {
298  xoff[i] >>= 1;
299  yoff[i] >>= 1;
300  }
301  }
302 
303  }
304 }
305 
306 
307 static int vc1_decode_sprites(VC1Context *v, GetBitContext* gb)
308 {
309  int ret;
310  MpegEncContext *s = &v->s;
311  AVCodecContext *avctx = s->avctx;
312  SpriteData sd;
313 
314  memset(&sd, 0, sizeof(sd));
315 
316  ret = vc1_parse_sprites(v, gb, &sd);
317  if (ret < 0)
318  return ret;
319 
320  if (!s->current_picture.f || !s->current_picture.f->data[0]) {
321  av_log(avctx, AV_LOG_ERROR, "Got no sprites\n");
322  return AVERROR_UNKNOWN;
323  }
324 
325  if (v->two_sprites && (!s->last_picture_ptr || !s->last_picture.f->data[0])) {
326  av_log(avctx, AV_LOG_WARNING, "Need two sprites, only got one\n");
327  v->two_sprites = 0;
328  }
329 
331  if ((ret = ff_get_buffer(avctx, v->sprite_output_frame, 0)) < 0)
332  return ret;
333 
334  vc1_draw_sprites(v, &sd);
335 
336  return 0;
337 }
338 
339 static void vc1_sprite_flush(AVCodecContext *avctx)
340 {
341  VC1Context *v = avctx->priv_data;
342  MpegEncContext *s = &v->s;
343  AVFrame *f = s->current_picture.f;
344  int plane, i;
345 
346  /* Windows Media Image codecs have a convergence interval of two keyframes.
347  Since we can't enforce it, clear to black the missing sprite. This is
348  wrong but it looks better than doing nothing. */
349 
350  if (f && f->data[0])
351  for (plane = 0; plane < (CONFIG_GRAY && s->avctx->flags & AV_CODEC_FLAG_GRAY ? 1 : 3); plane++)
352  for (i = 0; i < v->sprite_height>>!!plane; i++)
353  memset(f->data[plane] + i * f->linesize[plane],
354  plane ? 128 : 0, f->linesize[plane]);
355 }
356 
357 #endif
358 
360 {
361  MpegEncContext *s = &v->s;
362  int i, ret;
363  int mb_height = FFALIGN(s->mb_height, 2);
364 
365  /* Allocate mb bitplanes */
366  v->mv_type_mb_plane = av_malloc (s->mb_stride * mb_height);
367  v->direct_mb_plane = av_malloc (s->mb_stride * mb_height);
368  v->forward_mb_plane = av_malloc (s->mb_stride * mb_height);
369  v->fieldtx_plane = av_mallocz(s->mb_stride * mb_height);
370  v->acpred_plane = av_malloc (s->mb_stride * mb_height);
371  v->over_flags_plane = av_malloc (s->mb_stride * mb_height);
372  if (!v->mv_type_mb_plane || !v->direct_mb_plane || !v->forward_mb_plane ||
373  !v->fieldtx_plane || !v->acpred_plane || !v->over_flags_plane)
374  return AVERROR(ENOMEM);
375 
376  v->n_allocated_blks = s->mb_width + 2;
377  v->block = av_malloc(sizeof(*v->block) * v->n_allocated_blks);
378  v->cbp_base = av_malloc(sizeof(v->cbp_base[0]) * 3 * s->mb_stride);
379  if (!v->block || !v->cbp_base)
380  return AVERROR(ENOMEM);
381  v->cbp = v->cbp_base + 2 * s->mb_stride;
382  v->ttblk_base = av_malloc(sizeof(v->ttblk_base[0]) * 3 * s->mb_stride);
383  if (!v->ttblk_base)
384  return AVERROR(ENOMEM);
385  v->ttblk = v->ttblk_base + 2 * s->mb_stride;
386  v->is_intra_base = av_mallocz(sizeof(v->is_intra_base[0]) * 3 * s->mb_stride);
387  if (!v->is_intra_base)
388  return AVERROR(ENOMEM);
389  v->is_intra = v->is_intra_base + 2 * s->mb_stride;
390  v->luma_mv_base = av_mallocz(sizeof(v->luma_mv_base[0]) * 3 * s->mb_stride);
391  if (!v->luma_mv_base)
392  return AVERROR(ENOMEM);
393  v->luma_mv = v->luma_mv_base + 2 * s->mb_stride;
394 
395  /* allocate block type info in that way so it could be used with s->block_index[] */
396  v->mb_type_base = av_malloc(s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
397  if (!v->mb_type_base)
398  return AVERROR(ENOMEM);
399  v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
400  v->mb_type[1] = v->mb_type_base + s->b8_stride * (mb_height * 2 + 1) + s->mb_stride + 1;
401  v->mb_type[2] = v->mb_type[1] + s->mb_stride * (mb_height + 1);
402 
403  /* allocate memory to store block level MV info */
404  v->blk_mv_type_base = av_mallocz( s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
405  if (!v->blk_mv_type_base)
406  return AVERROR(ENOMEM);
407  v->blk_mv_type = v->blk_mv_type_base + s->b8_stride + 1;
408  v->mv_f_base = av_mallocz(2 * (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2));
409  if (!v->mv_f_base)
410  return AVERROR(ENOMEM);
411  v->mv_f[0] = v->mv_f_base + s->b8_stride + 1;
412  v->mv_f[1] = v->mv_f[0] + (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
413  v->mv_f_next_base = av_mallocz(2 * (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2));
414  if (!v->mv_f_next_base)
415  return AVERROR(ENOMEM);
416  v->mv_f_next[0] = v->mv_f_next_base + s->b8_stride + 1;
417  v->mv_f_next[1] = v->mv_f_next[0] + (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
418 
419  if (s->avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || s->avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
420  for (i = 0; i < 4; i++)
421  if (!(v->sr_rows[i >> 1][i & 1] = av_malloc(v->output_width)))
422  return AVERROR(ENOMEM);
423  }
424 
425  ret = ff_intrax8_common_init(s->avctx, &v->x8,
426  s->block, s->block_last_index,
427  s->mb_width, s->mb_height);
428  if (ret < 0)
429  return ret;
430 
431  return 0;
432 }
433 
435 {
436  if (avctx->codec_id == AV_CODEC_ID_MSS2)
437  return AV_PIX_FMT_YUV420P;
438 
439  if (CONFIG_GRAY && (avctx->flags & AV_CODEC_FLAG_GRAY)) {
440  if (avctx->color_range == AVCOL_RANGE_UNSPECIFIED)
441  avctx->color_range = AVCOL_RANGE_MPEG;
442  return AV_PIX_FMT_GRAY8;
443  }
444 
445  if (avctx->codec_id == AV_CODEC_ID_VC1IMAGE ||
447  return AV_PIX_FMT_YUV420P;
448 
450 }
451 
453 {
454  VC1Context *const v = avctx->priv_data;
455  MpegEncContext *const s = &v->s;
456  int ret;
457 
458  ret = av_image_check_size(avctx->width, avctx->height, 0, avctx);
459  if (ret < 0)
460  return ret;
461 
462  ff_mpv_decode_init(s, avctx);
463 
464  avctx->pix_fmt = vc1_get_format(avctx);
465 
467  if (ret < 0)
468  return ret;
469 
470  s->y_dc_scale_table = ff_wmv3_dc_scale_table;
471  s->c_dc_scale_table = ff_wmv3_dc_scale_table;
472 
473  ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable,
474  ff_wmv1_scantable[0]);
475  ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable,
476  ff_wmv1_scantable[1]);
477 
479  if (ret < 0) {
480  ff_vc1_decode_end(avctx);
481  return ret;
482  }
483  return 0;
484 }
485 
487 {
488  int i;
489  for (i = 0; i < 64; i++) {
490 #define transpose(x) (((x) >> 3) | (((x) & 7) << 3))
491  v->zz_8x8[0][i] = transpose(ff_wmv1_scantable[0][i]);
492  v->zz_8x8[1][i] = transpose(ff_wmv1_scantable[1][i]);
493  v->zz_8x8[2][i] = transpose(ff_wmv1_scantable[2][i]);
494  v->zz_8x8[3][i] = transpose(ff_wmv1_scantable[3][i]);
496  }
497  v->left_blk_sh = 0;
498  v->top_blk_sh = 3;
499 }
500 
501 static av_cold void vc1_init_static(void)
502 {
503  static VLCElem vlc_table[32372];
504  VLCInitState state = VLC_INIT_STATE(vlc_table);
505 
507  vc1_norm2_bits, 1, 1,
508  vc1_norm2_codes, 1, 1, 0);
510  vc1_norm6_bits, 1, 1,
511  vc1_norm6_codes, 2, 2, 0);
513  vc1_imode_bits, 1, 1,
514  vc1_imode_codes, 1, 1, 0);
515  for (int i = 0; i < 3; i++) {
516  ff_vc1_ttmb_vlc[i] =
518  vc1_ttmb_bits[i], 1, 1,
519  vc1_ttmb_codes[i], 2, 2, 0);
522  vc1_ttblk_bits[i], 1, 1,
523  vc1_ttblk_codes[i], 1, 1, 0);
526  vc1_subblkpat_bits[i], 1, 1,
527  vc1_subblkpat_codes[i], 1, 1, 0);
528  }
529  for (int i = 0; i < 4; i++) {
533  vc1_4mv_block_pattern_codes[i], 1, 1, 0);
536  vc1_cbpcy_p_bits[i], 1, 1,
537  vc1_cbpcy_p_codes[i], 2, 2, 0);
540  vc1_mv_diff_bits[i], 1, 1,
541  vc1_mv_diff_codes[i], 2, 2, 0);
542  /* initialize 4MV MBMODE VLC tables for interlaced frame P picture */
546  vc1_intfr_4mv_mbmode_codes[i], 2, 2, 0);
547  /* initialize NON-4MV MBMODE VLC tables for the same */
551  vc1_intfr_non4mv_mbmode_codes[i], 1, 1, 0);
552  /* initialize interlaced MVDATA tables (1-Ref) */
555  vc1_1ref_mvdata_bits[i], 1, 1,
556  vc1_1ref_mvdata_codes[i], 4, 4, 0);
557  /* Initialize 2MV Block pattern VLC tables */
561  vc1_2mv_block_pattern_codes[i], 1, 1, 0);
562  }
563  for (int i = 0; i < 8; i++) {
566  &vc1_ac_tables[i][0][1], 8, 4,
567  &vc1_ac_tables[i][0][0], 8, 4, 0);
568  /* initialize interlaced MVDATA tables (2-Ref) */
571  vc1_2ref_mvdata_bits[i], 1, 1,
572  vc1_2ref_mvdata_codes[i], 4, 4, 0);
573  /* Initialize interlaced CBPCY VLC tables (Table 124 - Table 131) */
576  vc1_icbpcy_p_bits[i], 1, 1,
577  vc1_icbpcy_p_codes[i], 2, 2, 0);
578  /* Initialize interlaced field picture MBMODE VLC tables */
581  vc1_if_mmv_mbmode_bits[i], 1, 1,
582  vc1_if_mmv_mbmode_codes[i], 1, 1, 0);
585  vc1_if_1mv_mbmode_bits[i], 1, 1,
586  vc1_if_1mv_mbmode_codes[i], 1, 1, 0);
587  }
589 }
590 
591 /**
592  * Init VC-1 specific tables and VC1Context members
593  * @param v The VC1Context to initialize
594  * @return Status
595  */
597 {
598  static AVOnce init_static_once = AV_ONCE_INIT;
599  MpegEncContext *const s = &v->s;
600 
601  /* defaults */
602  v->pq = -1;
603  v->mvrange = 0; /* 7.1.1.18, p80 */
604 
605  s->avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
606  s->out_format = FMT_H263;
607 
608  s->h263_pred = 1;
609  s->msmpeg4_version = 6;
610 
611  ff_vc1dsp_init(&v->vc1dsp);
612 
613  /* For error resilience */
614  ff_qpeldsp_init(&s->qdsp);
615 
616  /* VLC tables */
617  ff_thread_once(&init_static_once, vc1_init_static);
618 }
619 
620 /** Initialize a VC1/WMV3 decoder
621  * @todo TODO: Handle VC-1 IDUs (Transport level?)
622  * @todo TODO: Decipher remaining bits in extra_data
623  */
625 {
626  VC1Context *v = avctx->priv_data;
627  MpegEncContext *s = &v->s;
628  GetBitContext gb;
629  int ret;
630 
631  /* save the container output size for WMImage */
632  v->output_width = avctx->width;
633  v->output_height = avctx->height;
634 
635  if (!avctx->extradata_size || !avctx->extradata)
636  return AVERROR_INVALIDDATA;
637  v->s.avctx = avctx;
638 
640 
641  if (avctx->codec_id == AV_CODEC_ID_WMV3 || avctx->codec_id == AV_CODEC_ID_WMV3IMAGE) {
642  int count = 0;
643 
644  // looks like WMV3 has a sequence header stored in the extradata
645  // advanced sequence header may be before the first frame
646  // the last byte of the extradata is a version number, 1 for the
647  // samples we can decode
648 
649  ret = init_get_bits8(&gb, avctx->extradata, avctx->extradata_size);
650  if (ret < 0)
651  return ret;
652 
653  if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0)
654  return ret;
655 
656  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE && !v->res_sprite) {
657  avpriv_request_sample(avctx, "Non sprite WMV3IMAGE");
658  return AVERROR_PATCHWELCOME;
659  }
660 
661  count = avctx->extradata_size*8 - get_bits_count(&gb);
662  if (count > 0) {
663  av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
664  count, get_bits_long(&gb, FFMIN(count, 32)));
665  } else if (count < 0) {
666  av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
667  }
668  } else { // VC1/WVC1/WVP2
669  const uint8_t *start = avctx->extradata;
670  uint8_t *end = avctx->extradata + avctx->extradata_size;
671  const uint8_t *next;
672  int size, buf2_size;
673  uint8_t *buf2 = NULL;
674  int seq_initialized = 0, ep_initialized = 0;
675 
676  if (avctx->extradata_size < 16) {
677  av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
678  return AVERROR_INVALIDDATA;
679  }
680 
682  if (!buf2)
683  return AVERROR(ENOMEM);
684 
685  start = find_next_marker(start, end); // in WVC1 extradata first byte is its size, but can be 0 in mkv
686  next = start;
687  for (; next < end; start = next) {
688  next = find_next_marker(start + 4, end);
689  size = next - start - 4;
690  if (size <= 0)
691  continue;
692  buf2_size = v->vc1dsp.vc1_unescape_buffer(start + 4, size, buf2);
693  init_get_bits(&gb, buf2, buf2_size * 8);
694  switch (AV_RB32(start)) {
695  case VC1_CODE_SEQHDR:
696  if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0) {
697  av_free(buf2);
698  return ret;
699  }
700  seq_initialized = 1;
701  break;
702  case VC1_CODE_ENTRYPOINT:
703  if ((ret = ff_vc1_decode_entry_point(avctx, v, &gb)) < 0) {
704  av_free(buf2);
705  return ret;
706  }
707  ep_initialized = 1;
708  break;
709  }
710  }
711  av_free(buf2);
712  if (!seq_initialized || !ep_initialized) {
713  av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
714  return AVERROR_INVALIDDATA;
715  }
716  v->res_sprite = (avctx->codec_id == AV_CODEC_ID_VC1IMAGE);
717  }
718 
719  avctx->profile = v->profile;
720  if (v->profile == PROFILE_ADVANCED)
721  avctx->level = v->level;
722 
723  ff_blockdsp_init(&s->bdsp);
725 
726  avctx->has_b_frames = !!avctx->max_b_frames;
727 
728  if (v->color_prim == 1 || v->color_prim == 5 || v->color_prim == 6)
729  avctx->color_primaries = v->color_prim;
730  if (v->transfer_char == 1 || v->transfer_char == 7)
731  avctx->color_trc = v->transfer_char;
732  if (v->matrix_coef == 1 || v->matrix_coef == 6 || v->matrix_coef == 7)
733  avctx->colorspace = v->matrix_coef;
734 
735  s->mb_width = (avctx->coded_width + 15) >> 4;
736  s->mb_height = (avctx->coded_height + 15) >> 4;
737 
738  if (v->profile == PROFILE_ADVANCED || v->res_fasttx) {
740  } else {
741  memcpy(v->zz_8x8, ff_wmv1_scantable, 4*64);
742  v->left_blk_sh = 3;
743  v->top_blk_sh = 0;
752  }
753 
754  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
755  v->sprite_width = avctx->coded_width;
756  v->sprite_height = avctx->coded_height;
757 
758  avctx->coded_width = avctx->width = v->output_width;
759  avctx->coded_height = avctx->height = v->output_height;
760 
761  // prevent 16.16 overflows
762  if (v->sprite_width > 1 << 14 ||
763  v->sprite_height > 1 << 14 ||
764  v->output_width > 1 << 14 ||
765  v->output_height > 1 << 14) {
766  return AVERROR_INVALIDDATA;
767  }
768 
769  if ((v->sprite_width&1) || (v->sprite_height&1)) {
770  avpriv_request_sample(avctx, "odd sprites support");
771  return AVERROR_PATCHWELCOME;
772  }
773  }
774  return 0;
775 }
776 
777 /** Close a VC1/WMV3 decoder
778  * @warning Initial try at using MpegEncContext stuff
779  */
781 {
782  VC1Context *v = avctx->priv_data;
783  int i;
784 
786 
787  for (i = 0; i < 4; i++)
788  av_freep(&v->sr_rows[i >> 1][i & 1]);
789  ff_mpv_common_end(&v->s);
793  av_freep(&v->fieldtx_plane);
794  av_freep(&v->acpred_plane);
796  av_freep(&v->mb_type_base);
798  av_freep(&v->mv_f_base);
800  av_freep(&v->block);
801  av_freep(&v->cbp_base);
802  av_freep(&v->ttblk_base);
803  av_freep(&v->is_intra_base); // FIXME use v->mb_type[]
804  av_freep(&v->luma_mv_base);
806  return 0;
807 }
808 
809 
810 /** Decode a VC1/WMV3 frame
811  * @todo TODO: Handle VC-1 IDUs (Transport level?)
812  */
813 static int vc1_decode_frame(AVCodecContext *avctx, AVFrame *pict,
814  int *got_frame, AVPacket *avpkt)
815 {
816  const uint8_t *buf = avpkt->data;
817  int buf_size = avpkt->size, n_slices = 0, i, ret;
818  VC1Context *v = avctx->priv_data;
819  MpegEncContext *s = &v->s;
820  uint8_t *buf2 = NULL;
821  const uint8_t *buf_start = buf, *buf_start_second_field = NULL;
822  int mb_height, n_slices1=-1;
823  struct {
824  uint8_t *buf;
825  GetBitContext gb;
826  int mby_start;
827  const uint8_t *rawbuf;
828  int raw_size;
829  } *slices = NULL, *tmp;
830  unsigned slices_allocated = 0;
831 
832  v->second_field = 0;
833 
834  if(s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY)
835  s->low_delay = 1;
836 
837  /* no supplementary picture */
838  if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == VC1_CODE_ENDOFSEQ)) {
839  /* special case for last picture */
840  if (s->low_delay == 0 && s->next_picture_ptr) {
841  if ((ret = av_frame_ref(pict, s->next_picture_ptr->f)) < 0)
842  return ret;
843  s->next_picture_ptr = NULL;
844 
845  *got_frame = 1;
846  }
847 
848  return buf_size;
849  }
850 
851  //for advanced profile we may need to parse and unescape data
852  if (avctx->codec_id == AV_CODEC_ID_VC1 || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
853  int buf_size2 = 0;
854  size_t next_allocated = 0;
855  buf2 = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
856  if (!buf2)
857  return AVERROR(ENOMEM);
858 
859  if (IS_MARKER(AV_RB32(buf))) { /* frame starts with marker and needs to be parsed */
860  const uint8_t *start, *end, *next;
861  int size;
862 
863  next = buf;
864  for (start = buf, end = buf + buf_size; next < end; start = next) {
865  next = find_next_marker(start + 4, end);
866  size = next - start - 4;
867  if (size <= 0) continue;
868  switch (AV_RB32(start)) {
869  case VC1_CODE_FRAME:
870  buf_start = start;
871  buf_size2 = v->vc1dsp.vc1_unescape_buffer(start + 4, size, buf2);
872  break;
873  case VC1_CODE_FIELD: {
874  int buf_size3;
875  buf_start_second_field = start;
876  av_size_mult(sizeof(*slices), n_slices+1, &next_allocated);
877  tmp = next_allocated ? av_fast_realloc(slices, &slices_allocated, next_allocated) : NULL;
878  if (!tmp) {
879  ret = AVERROR(ENOMEM);
880  goto err;
881  }
882  slices = tmp;
883  slices[n_slices].buf = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
884  if (!slices[n_slices].buf) {
885  ret = AVERROR(ENOMEM);
886  goto err;
887  }
888  buf_size3 = v->vc1dsp.vc1_unescape_buffer(start + 4, size,
889  slices[n_slices].buf);
890  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
891  buf_size3 << 3);
892  slices[n_slices].mby_start = avctx->coded_height + 31 >> 5;
893  slices[n_slices].rawbuf = start;
894  slices[n_slices].raw_size = size + 4;
895  n_slices1 = n_slices - 1; // index of the last slice of the first field
896  n_slices++;
897  break;
898  }
899  case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
900  buf_size2 = v->vc1dsp.vc1_unescape_buffer(start + 4, size, buf2);
901  init_get_bits(&s->gb, buf2, buf_size2 * 8);
902  ff_vc1_decode_entry_point(avctx, v, &s->gb);
903  break;
904  case VC1_CODE_SLICE: {
905  int buf_size3;
906  av_size_mult(sizeof(*slices), n_slices+1, &next_allocated);
907  tmp = next_allocated ? av_fast_realloc(slices, &slices_allocated, next_allocated) : NULL;
908  if (!tmp) {
909  ret = AVERROR(ENOMEM);
910  goto err;
911  }
912  slices = tmp;
913  slices[n_slices].buf = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
914  if (!slices[n_slices].buf) {
915  ret = AVERROR(ENOMEM);
916  goto err;
917  }
918  buf_size3 = v->vc1dsp.vc1_unescape_buffer(start + 4, size,
919  slices[n_slices].buf);
920  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
921  buf_size3 << 3);
922  slices[n_slices].mby_start = get_bits(&slices[n_slices].gb, 9);
923  slices[n_slices].rawbuf = start;
924  slices[n_slices].raw_size = size + 4;
925  n_slices++;
926  break;
927  }
928  }
929  }
930  } else if (v->interlace && ((buf[0] & 0xC0) == 0xC0)) { /* WVC1 interlaced stores both fields divided by marker */
931  const uint8_t *divider;
932  int buf_size3;
933 
934  divider = find_next_marker(buf, buf + buf_size);
935  if ((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD) {
936  av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
938  goto err;
939  } else { // found field marker, unescape second field
940  buf_start_second_field = divider;
941  av_size_mult(sizeof(*slices), n_slices+1, &next_allocated);
942  tmp = next_allocated ? av_fast_realloc(slices, &slices_allocated, next_allocated) : NULL;
943  if (!tmp) {
944  ret = AVERROR(ENOMEM);
945  goto err;
946  }
947  slices = tmp;
948  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
949  if (!slices[n_slices].buf) {
950  ret = AVERROR(ENOMEM);
951  goto err;
952  }
953  buf_size3 = v->vc1dsp.vc1_unescape_buffer(divider + 4, buf + buf_size - divider - 4, slices[n_slices].buf);
954  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
955  buf_size3 << 3);
956  slices[n_slices].mby_start = s->mb_height + 1 >> 1;
957  slices[n_slices].rawbuf = divider;
958  slices[n_slices].raw_size = buf + buf_size - divider;
959  n_slices1 = n_slices - 1;
960  n_slices++;
961  }
962  buf_size2 = v->vc1dsp.vc1_unescape_buffer(buf, divider - buf, buf2);
963  } else {
964  buf_size2 = v->vc1dsp.vc1_unescape_buffer(buf, buf_size, buf2);
965  }
966  init_get_bits(&s->gb, buf2, buf_size2*8);
967  } else{
968  ret = init_get_bits8(&s->gb, buf, buf_size);
969  if (ret < 0)
970  return ret;
971  }
972 
973  if (v->res_sprite) {
974  v->new_sprite = !get_bits1(&s->gb);
975  v->two_sprites = get_bits1(&s->gb);
976  /* res_sprite means a Windows Media Image stream, AV_CODEC_ID_*IMAGE means
977  we're using the sprite compositor. These are intentionally kept separate
978  so you can get the raw sprites by using the wmv3 decoder for WMVP or
979  the vc1 one for WVP2 */
980  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
981  if (v->new_sprite) {
982  // switch AVCodecContext parameters to those of the sprites
983  avctx->width = avctx->coded_width = v->sprite_width;
984  avctx->height = avctx->coded_height = v->sprite_height;
985  } else {
986  goto image;
987  }
988  }
989  }
990 
991  if (s->context_initialized &&
992  (s->width != avctx->coded_width ||
993  s->height != avctx->coded_height)) {
994  ff_vc1_decode_end(avctx);
995  }
996 
997  if (!s->context_initialized) {
998  ret = ff_vc1_decode_init(avctx);
999  if (ret < 0)
1000  goto err;
1001 
1002  s->low_delay = !avctx->has_b_frames || v->res_sprite;
1003 
1004  if (v->profile == PROFILE_ADVANCED) {
1005  if(avctx->coded_width<=1 || avctx->coded_height<=1) {
1007  goto err;
1008  }
1009  s->h_edge_pos = avctx->coded_width;
1010  s->v_edge_pos = avctx->coded_height;
1011  }
1012  }
1013 
1014  // do parse frame header
1015  v->pic_header_flag = 0;
1016  v->first_pic_header_flag = 1;
1017  if (v->profile < PROFILE_ADVANCED) {
1018  if ((ret = ff_vc1_parse_frame_header(v, &s->gb)) < 0) {
1019  goto err;
1020  }
1021  } else {
1022  if ((ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1023  goto err;
1024  }
1025  }
1026  v->first_pic_header_flag = 0;
1027 
1028  if (avctx->debug & FF_DEBUG_PICT_INFO)
1029  av_log(v->s.avctx, AV_LOG_DEBUG, "pict_type: %c\n", av_get_picture_type_char(s->pict_type));
1030 
1031  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
1032  && s->pict_type != AV_PICTURE_TYPE_I) {
1033  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected I-frame\n");
1035  goto err;
1036  }
1037  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
1038  && v->field_mode) {
1039  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected Frames not Fields\n");
1041  goto err;
1042  }
1043  if ((s->mb_height >> v->field_mode) == 0) {
1044  av_log(v->s.avctx, AV_LOG_ERROR, "image too short\n");
1046  goto err;
1047  }
1048 
1049  /* skip B-frames if we don't have reference frames */
1050  if (!s->last_picture_ptr && s->pict_type == AV_PICTURE_TYPE_B) {
1051  av_log(v->s.avctx, AV_LOG_DEBUG, "Skipping B frame without reference frames\n");
1052  goto end;
1053  }
1054  if ((avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B) ||
1055  (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I) ||
1056  avctx->skip_frame >= AVDISCARD_ALL) {
1057  goto end;
1058  }
1059 
1060  if ((ret = ff_mpv_frame_start(s, avctx)) < 0) {
1061  goto err;
1062  }
1063 
1067 
1068  // process pulldown flags
1069  s->current_picture_ptr->f->repeat_pict = 0;
1070  // Pulldown flags are only valid when 'broadcast' has been set.
1071  if (v->rff) {
1072  // repeat field
1073  s->current_picture_ptr->f->repeat_pict = 1;
1074  } else if (v->rptfrm) {
1075  // repeat frames
1076  s->current_picture_ptr->f->repeat_pict = v->rptfrm * 2;
1077  }
1078 
1079  if (avctx->hwaccel) {
1080  const FFHWAccel *hwaccel = ffhwaccel(avctx->hwaccel);
1081  s->mb_y = 0;
1082  if (v->field_mode && buf_start_second_field) {
1083  // decode first field
1084  s->picture_structure = PICT_BOTTOM_FIELD - v->tff;
1085  ret = hwaccel->start_frame(avctx, buf_start,
1086  buf_start_second_field - buf_start);
1087  if (ret < 0)
1088  goto err;
1089 
1090  if (n_slices1 == -1) {
1091  // no slices, decode the field as-is
1092  ret = hwaccel->decode_slice(avctx, buf_start,
1093  buf_start_second_field - buf_start);
1094  if (ret < 0)
1095  goto err;
1096  } else {
1097  ret = hwaccel->decode_slice(avctx, buf_start,
1098  slices[0].rawbuf - buf_start);
1099  if (ret < 0)
1100  goto err;
1101 
1102  for (i = 0 ; i < n_slices1 + 1; i++) {
1103  s->gb = slices[i].gb;
1104  s->mb_y = slices[i].mby_start;
1105 
1106  v->pic_header_flag = get_bits1(&s->gb);
1107  if (v->pic_header_flag) {
1108  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1109  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1111  if (avctx->err_recognition & AV_EF_EXPLODE)
1112  goto err;
1113  continue;
1114  }
1115  }
1116 
1117  ret = hwaccel->decode_slice(avctx, slices[i].rawbuf,
1118  slices[i].raw_size);
1119  if (ret < 0)
1120  goto err;
1121  }
1122  }
1123 
1124  if ((ret = hwaccel->end_frame(avctx)) < 0)
1125  goto err;
1126 
1127  // decode second field
1128  s->gb = slices[n_slices1 + 1].gb;
1129  s->mb_y = slices[n_slices1 + 1].mby_start;
1130  s->picture_structure = PICT_TOP_FIELD + v->tff;
1131  v->second_field = 1;
1132  v->pic_header_flag = 0;
1133  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1134  av_log(avctx, AV_LOG_ERROR, "parsing header for second field failed");
1136  goto err;
1137  }
1139 
1140  ret = hwaccel->start_frame(avctx, buf_start_second_field,
1141  (buf + buf_size) - buf_start_second_field);
1142  if (ret < 0)
1143  goto err;
1144 
1145  if (n_slices - n_slices1 == 2) {
1146  // no slices, decode the field as-is
1147  ret = hwaccel->decode_slice(avctx, buf_start_second_field,
1148  (buf + buf_size) - buf_start_second_field);
1149  if (ret < 0)
1150  goto err;
1151  } else {
1152  ret = hwaccel->decode_slice(avctx, buf_start_second_field,
1153  slices[n_slices1 + 2].rawbuf - buf_start_second_field);
1154  if (ret < 0)
1155  goto err;
1156 
1157  for (i = n_slices1 + 2; i < n_slices; i++) {
1158  s->gb = slices[i].gb;
1159  s->mb_y = slices[i].mby_start;
1160 
1161  v->pic_header_flag = get_bits1(&s->gb);
1162  if (v->pic_header_flag) {
1163  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1164  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1166  if (avctx->err_recognition & AV_EF_EXPLODE)
1167  goto err;
1168  continue;
1169  }
1170  }
1171 
1172  ret = hwaccel->decode_slice(avctx, slices[i].rawbuf,
1173  slices[i].raw_size);
1174  if (ret < 0)
1175  goto err;
1176  }
1177  }
1178 
1179  if ((ret = hwaccel->end_frame(avctx)) < 0)
1180  goto err;
1181  } else {
1182  s->picture_structure = PICT_FRAME;
1183  ret = hwaccel->start_frame(avctx, buf_start,
1184  (buf + buf_size) - buf_start);
1185  if (ret < 0)
1186  goto err;
1187 
1188  if (n_slices == 0) {
1189  // no slices, decode the frame as-is
1190  ret = hwaccel->decode_slice(avctx, buf_start,
1191  (buf + buf_size) - buf_start);
1192  if (ret < 0)
1193  goto err;
1194  } else {
1195  // decode the frame part as the first slice
1196  ret = hwaccel->decode_slice(avctx, buf_start,
1197  slices[0].rawbuf - buf_start);
1198  if (ret < 0)
1199  goto err;
1200 
1201  // and process the slices as additional slices afterwards
1202  for (i = 0 ; i < n_slices; i++) {
1203  s->gb = slices[i].gb;
1204  s->mb_y = slices[i].mby_start;
1205 
1206  v->pic_header_flag = get_bits1(&s->gb);
1207  if (v->pic_header_flag) {
1208  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1209  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1211  if (avctx->err_recognition & AV_EF_EXPLODE)
1212  goto err;
1213  continue;
1214  }
1215  }
1216 
1217  ret = hwaccel->decode_slice(avctx, slices[i].rawbuf,
1218  slices[i].raw_size);
1219  if (ret < 0)
1220  goto err;
1221  }
1222  }
1223  if ((ret = hwaccel->end_frame(avctx)) < 0)
1224  goto err;
1225  }
1226  } else {
1227  int header_ret = 0;
1228 
1230 
1231  v->end_mb_x = s->mb_width;
1232  if (v->field_mode) {
1233  s->current_picture.f->linesize[0] <<= 1;
1234  s->current_picture.f->linesize[1] <<= 1;
1235  s->current_picture.f->linesize[2] <<= 1;
1236  s->linesize <<= 1;
1237  s->uvlinesize <<= 1;
1238  }
1239  mb_height = s->mb_height >> v->field_mode;
1240 
1241  av_assert0 (mb_height > 0);
1242 
1243  for (i = 0; i <= n_slices; i++) {
1244  if (i > 0 && slices[i - 1].mby_start >= mb_height) {
1245  if (v->field_mode <= 0) {
1246  av_log(v->s.avctx, AV_LOG_ERROR, "Slice %d starts beyond "
1247  "picture boundary (%d >= %d)\n", i,
1248  slices[i - 1].mby_start, mb_height);
1249  continue;
1250  }
1251  v->second_field = 1;
1252  av_assert0((s->mb_height & 1) == 0);
1253  v->blocks_off = s->b8_stride * (s->mb_height&~1);
1254  v->mb_off = s->mb_stride * s->mb_height >> 1;
1255  } else {
1256  v->second_field = 0;
1257  v->blocks_off = 0;
1258  v->mb_off = 0;
1259  }
1260  if (i) {
1261  v->pic_header_flag = 0;
1262  if (v->field_mode && i == n_slices1 + 2) {
1263  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1264  av_log(v->s.avctx, AV_LOG_ERROR, "Field header damaged\n");
1266  if (avctx->err_recognition & AV_EF_EXPLODE)
1267  goto err;
1268  continue;
1269  }
1270  } else if (get_bits1(&s->gb)) {
1271  v->pic_header_flag = 1;
1272  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1273  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1275  if (avctx->err_recognition & AV_EF_EXPLODE)
1276  goto err;
1277  continue;
1278  }
1279  }
1280  }
1281  if (header_ret < 0)
1282  continue;
1283  s->start_mb_y = (i == 0) ? 0 : FFMAX(0, slices[i-1].mby_start % mb_height);
1284  if (!v->field_mode || v->second_field)
1285  s->end_mb_y = (i == n_slices ) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1286  else {
1287  if (i >= n_slices) {
1288  av_log(v->s.avctx, AV_LOG_ERROR, "first field slice count too large\n");
1289  continue;
1290  }
1291  s->end_mb_y = (i == n_slices1 + 1) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1292  }
1293  if (s->end_mb_y <= s->start_mb_y) {
1294  av_log(v->s.avctx, AV_LOG_ERROR, "end mb y %d %d invalid\n", s->end_mb_y, s->start_mb_y);
1295  continue;
1296  }
1297  if (((s->pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) ||
1298  (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type)) &&
1299  !v->cbpcy_vlc) {
1300  av_log(v->s.avctx, AV_LOG_ERROR, "missing cbpcy_vlc\n");
1301  continue;
1302  }
1304  if (i != n_slices) {
1305  s->gb = slices[i].gb;
1306  }
1307  }
1308  if (v->field_mode) {
1309  v->second_field = 0;
1310  s->current_picture.f->linesize[0] >>= 1;
1311  s->current_picture.f->linesize[1] >>= 1;
1312  s->current_picture.f->linesize[2] >>= 1;
1313  s->linesize >>= 1;
1314  s->uvlinesize >>= 1;
1316  FFSWAP(uint8_t *, v->mv_f_next[0], v->mv_f[0]);
1317  FFSWAP(uint8_t *, v->mv_f_next[1], v->mv_f[1]);
1318  }
1319  }
1320  ff_dlog(s->avctx, "Consumed %i/%i bits\n",
1321  get_bits_count(&s->gb), s->gb.size_in_bits);
1322 // if (get_bits_count(&s->gb) > buf_size * 8)
1323 // return -1;
1324  if(s->er.error_occurred && s->pict_type == AV_PICTURE_TYPE_B) {
1326  goto err;
1327  }
1328  if ( !v->field_mode
1329  && avctx->codec_id != AV_CODEC_ID_WMV3IMAGE
1330  && avctx->codec_id != AV_CODEC_ID_VC1IMAGE)
1331  ff_er_frame_end(&s->er, NULL);
1332  }
1333 
1335 
1336  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
1337 image:
1338  avctx->width = avctx->coded_width = v->output_width;
1339  avctx->height = avctx->coded_height = v->output_height;
1340  if (avctx->skip_frame >= AVDISCARD_NONREF)
1341  goto end;
1342  if (!v->sprite_output_frame &&
1343  !(v->sprite_output_frame = av_frame_alloc())) {
1344  ret = AVERROR(ENOMEM);
1345  goto err;
1346  }
1347 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
1348  if ((ret = vc1_decode_sprites(v, &s->gb)) < 0)
1349  goto err;
1350 #endif
1351  if ((ret = av_frame_ref(pict, v->sprite_output_frame)) < 0)
1352  goto err;
1353  *got_frame = 1;
1354  } else {
1355  if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
1356  if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
1357  goto err;
1358  if (!v->field_mode)
1359  ff_print_debug_info(s, s->current_picture_ptr, pict);
1360  *got_frame = 1;
1361  } else if (s->last_picture_ptr) {
1362  if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
1363  goto err;
1364  if (!v->field_mode)
1365  ff_print_debug_info(s, s->last_picture_ptr, pict);
1366  *got_frame = 1;
1367  }
1368  }
1369 
1370 end:
1371  av_free(buf2);
1372  for (i = 0; i < n_slices; i++)
1373  av_free(slices[i].buf);
1374  av_free(slices);
1375  return buf_size;
1376 
1377 err:
1378  av_free(buf2);
1379  for (i = 0; i < n_slices; i++)
1380  av_free(slices[i].buf);
1381  av_free(slices);
1382  return ret;
1383 }
1384 
1385 
1387  .p.name = "vc1",
1388  CODEC_LONG_NAME("SMPTE VC-1"),
1389  .p.type = AVMEDIA_TYPE_VIDEO,
1390  .p.id = AV_CODEC_ID_VC1,
1391  .priv_data_size = sizeof(VC1Context),
1392  .init = vc1_decode_init,
1393  .close = ff_vc1_decode_end,
1395  .flush = ff_mpeg_flush,
1396  .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1397  .hw_configs = (const AVCodecHWConfigInternal *const []) {
1398 #if CONFIG_VC1_DXVA2_HWACCEL
1399  HWACCEL_DXVA2(vc1),
1400 #endif
1401 #if CONFIG_VC1_D3D11VA_HWACCEL
1402  HWACCEL_D3D11VA(vc1),
1403 #endif
1404 #if CONFIG_VC1_D3D11VA2_HWACCEL
1405  HWACCEL_D3D11VA2(vc1),
1406 #endif
1407 #if CONFIG_VC1_D3D12VA_HWACCEL
1408  HWACCEL_D3D12VA(vc1),
1409 #endif
1410 #if CONFIG_VC1_NVDEC_HWACCEL
1411  HWACCEL_NVDEC(vc1),
1412 #endif
1413 #if CONFIG_VC1_VAAPI_HWACCEL
1414  HWACCEL_VAAPI(vc1),
1415 #endif
1416 #if CONFIG_VC1_VDPAU_HWACCEL
1417  HWACCEL_VDPAU(vc1),
1418 #endif
1419  NULL
1420  },
1421  .p.profiles = NULL_IF_CONFIG_SMALL(ff_vc1_profiles)
1422 };
1423 
1424 #if CONFIG_WMV3_DECODER
1425 const FFCodec ff_wmv3_decoder = {
1426  .p.name = "wmv3",
1427  CODEC_LONG_NAME("Windows Media Video 9"),
1428  .p.type = AVMEDIA_TYPE_VIDEO,
1429  .p.id = AV_CODEC_ID_WMV3,
1430  .priv_data_size = sizeof(VC1Context),
1431  .init = vc1_decode_init,
1432  .close = ff_vc1_decode_end,
1434  .flush = ff_mpeg_flush,
1435  .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1436  .hw_configs = (const AVCodecHWConfigInternal *const []) {
1437 #if CONFIG_WMV3_DXVA2_HWACCEL
1438  HWACCEL_DXVA2(wmv3),
1439 #endif
1440 #if CONFIG_WMV3_D3D11VA_HWACCEL
1441  HWACCEL_D3D11VA(wmv3),
1442 #endif
1443 #if CONFIG_WMV3_D3D11VA2_HWACCEL
1444  HWACCEL_D3D11VA2(wmv3),
1445 #endif
1446 #if CONFIG_WMV3_D3D12VA_HWACCEL
1447  HWACCEL_D3D12VA(wmv3),
1448 #endif
1449 #if CONFIG_WMV3_NVDEC_HWACCEL
1450  HWACCEL_NVDEC(wmv3),
1451 #endif
1452 #if CONFIG_WMV3_VAAPI_HWACCEL
1453  HWACCEL_VAAPI(wmv3),
1454 #endif
1455 #if CONFIG_WMV3_VDPAU_HWACCEL
1456  HWACCEL_VDPAU(wmv3),
1457 #endif
1458  NULL
1459  },
1460  .p.profiles = NULL_IF_CONFIG_SMALL(ff_vc1_profiles)
1461 };
1462 #endif
1463 
1464 #if CONFIG_WMV3IMAGE_DECODER
1465 const FFCodec ff_wmv3image_decoder = {
1466  .p.name = "wmv3image",
1467  CODEC_LONG_NAME("Windows Media Video 9 Image"),
1468  .p.type = AVMEDIA_TYPE_VIDEO,
1469  .p.id = AV_CODEC_ID_WMV3IMAGE,
1470  .priv_data_size = sizeof(VC1Context),
1471  .init = vc1_decode_init,
1472  .close = ff_vc1_decode_end,
1474  .p.capabilities = AV_CODEC_CAP_DR1,
1475  .flush = vc1_sprite_flush,
1476 };
1477 #endif
1478 
1479 #if CONFIG_VC1IMAGE_DECODER
1480 const FFCodec ff_vc1image_decoder = {
1481  .p.name = "vc1image",
1482  CODEC_LONG_NAME("Windows Media Video 9 Image v2"),
1483  .p.type = AVMEDIA_TYPE_VIDEO,
1484  .p.id = AV_CODEC_ID_VC1IMAGE,
1485  .priv_data_size = sizeof(VC1Context),
1486  .init = vc1_decode_init,
1487  .close = ff_vc1_decode_end,
1489  .p.capabilities = AV_CODEC_CAP_DR1,
1490  .flush = vc1_sprite_flush,
1491 };
1492 #endif
PICT_FRAME
#define PICT_FRAME
Definition: mpegutils.h:33
HWACCEL_D3D12VA
#define HWACCEL_D3D12VA(codec)
Definition: hwconfig.h:80
av_size_mult
int av_size_mult(size_t a, size_t b, size_t *r)
Multiply two size_t values checking for overflow.
Definition: mem.c:567
ff_mpv_common_init
av_cold int ff_mpv_common_init(MpegEncContext *s)
init common structure for both encoder and decoder.
Definition: mpegvideo.c:682
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:1427
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:186
ff_simple_idct44_add
void ff_simple_idct44_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: simple_idct.c:224
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:260
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
AV_EF_EXPLODE
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: defs.h:51
vc1_cbpcy_p_bits
static const uint8_t vc1_cbpcy_p_bits[4][64]
Definition: vc1_vlc_data.h:501
av_clip
#define av_clip
Definition: common.h:99
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:685
AC_VLC_BITS
#define AC_VLC_BITS
Definition: intrax8.c:42
ff_get_format
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
Definition: decode.c:1220
vc1_hwaccel_pixfmt_list_420
static enum AVPixelFormat vc1_hwaccel_pixfmt_list_420[]
Definition: vc1dec.c:55
ff_vc1image_decoder
const FFCodec ff_vc1image_decoder
VC1Context::cbp
uint32_t * cbp
Definition: vc1.h:388
vc1_intfr_non4mv_mbmode_bits
static const uint8_t vc1_intfr_non4mv_mbmode_bits[4][9]
Definition: vc1_vlc_data.h:112
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
thread.h
vc1.h
vc1_subblkpat_codes
static const uint8_t vc1_subblkpat_codes[3][15]
Definition: vc1_vlc_data.h:744
VC1DSPContext::vc1_inv_trans_4x4
void(* vc1_inv_trans_4x4)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:40
AVCodecContext::err_recognition
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:1420
get_bits_long
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:421
vc1_2ref_mvdata_bits
static const uint8_t vc1_2ref_mvdata_bits[8][126]
Definition: vc1_vlc_data.h:389
ff_qpeldsp_init
av_cold void ff_qpeldsp_init(QpelDSPContext *c)
Definition: qpeldsp.c:784
vc1_2mv_block_pattern_bits
static const uint8_t vc1_2mv_block_pattern_bits[4][4]
Definition: vc1_vlc_data.h:85
get_bits_count
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:266
GetBitContext::size_in_bits
int size_in_bits
Definition: get_bits.h:111
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:160
Picture::field_picture
int field_picture
whether or not the picture was encoded in separate fields
Definition: mpegpicture.h:72
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:375
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:28
AVCodecContext::color_trc
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:678
HWACCEL_DXVA2
#define HWACCEL_DXVA2(codec)
Definition: hwconfig.h:64
ff_simple_idct84_add
void ff_simple_idct84_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: simple_idct.c:194
AVPacket::data
uint8_t * data
Definition: packet.h:524
vc1_intfr_4mv_mbmode_bits
static const uint8_t vc1_intfr_4mv_mbmode_bits[4][15]
Definition: vc1_vlc_data.h:97
HWACCEL_D3D11VA2
#define HWACCEL_D3D11VA2(codec)
Definition: hwconfig.h:66
VC1_SUBBLKPAT_VLC_BITS
#define VC1_SUBBLKPAT_VLC_BITS
Definition: vc1data.h:79
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:254
FFCodec
Definition: codec_internal.h:127
PICT_BOTTOM_FIELD
#define PICT_BOTTOM_FIELD
Definition: mpegutils.h:32
VC1_CBPCY_P_VLC_BITS
#define VC1_CBPCY_P_VLC_BITS
Definition: vc1data.h:69
VC1DSPContext::vc1_inv_trans_8x8_dc
void(* vc1_inv_trans_8x8_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:41
mpegvideo.h
MpegEncContext::avctx
struct AVCodecContext * avctx
Definition: mpegvideo.h:91
AVFrame::flags
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:647
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
VC1DSPContext::vc1_inv_trans_4x4_dc
void(* vc1_inv_trans_4x4_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:44
AVERROR_UNKNOWN
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:73
vc1_norm2_bits
static const uint8_t vc1_norm2_bits[4]
Definition: vc1_vlc_data.h:48
VC1Context::output_height
int output_height
Definition: vc1.h:378
VC1Context::luma_mv
int16_t((* luma_mv)[2]
Definition: vc1.h:390
mpegutils.h
vc1_ttmb_bits
static const uint8_t vc1_ttmb_bits[3][16]
Definition: vc1_vlc_data.h:701
init_get_bits
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:514
vc1_intfr_4mv_mbmode_codes
static const uint16_t vc1_intfr_4mv_mbmode_codes[4][15]
Definition: vc1_vlc_data.h:90
FF_DEBUG_PICT_INFO
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:1397
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:396
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:30
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
AV_FRAME_FLAG_TOP_FIELD_FIRST
#define AV_FRAME_FLAG_TOP_FIELD_FIRST
A flag to mark frames where the top field is displayed first if the content is interlaced.
Definition: frame.h:639
ff_vc1_parse_frame_header
int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:622
skip_bits
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:381
get_bits
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:335
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:131
MpegEncContext::pict_type
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:207
FFHWAccel
Definition: hwaccel_internal.h:34
VC1_INTFR_NON4MV_MBMODE_VLC_BITS
#define VC1_INTFR_NON4MV_MBMODE_VLC_BITS
Definition: vc1data.h:83
AVCodecContext::skip_frame
enum AVDiscard skip_frame
Skip decoding for selected frames.
Definition: avcodec.h:1819
ff_vc1_if_1mv_mbmode_vlc
const VLCElem * ff_vc1_if_1mv_mbmode_vlc[8]
Definition: vc1data.c:120
GetBitContext
Definition: get_bits.h:108
vc1_decode_init
static av_cold int vc1_decode_init(AVCodecContext *avctx)
Initialize a VC1/WMV3 decoder.
Definition: vc1dec.c:624
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:274
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:502
ff_vc1_norm6_vlc
VLCElem ff_vc1_norm6_vlc[556]
Definition: vc1data.c:107
HWACCEL_VDPAU
#define HWACCEL_VDPAU(codec)
Definition: hwconfig.h:72
AV_CODEC_FLAG_LOW_DELAY
#define AV_CODEC_FLAG_LOW_DELAY
Force low delay.
Definition: avcodec.h:334
AVCodecContext::coded_height
int coded_height
Definition: avcodec.h:633
ff_print_debug_info
void ff_print_debug_info(const MpegEncContext *s, const Picture *p, AVFrame *pict)
Definition: mpegvideo_dec.c:460
VC1Context::n_allocated_blks
int n_allocated_blks
Definition: vc1.h:387
VC1_TTMB_VLC_BITS
#define VC1_TTMB_VLC_BITS
Definition: vc1data.h:65
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:148
VC1_IF_MMV_MBMODE_VLC_BITS
#define VC1_IF_MMV_MBMODE_VLC_BITS
Definition: vc1data.h:85
ff_mpv_common_end
void ff_mpv_common_end(MpegEncContext *s)
Definition: mpegvideo.c:783
avassert.h
AVCodecContext::color_primaries
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:671
ff_thread_once
static int ff_thread_once(char *control, void(*routine)(void))
Definition: thread.h:205
mpegvideodec.h
vc1_ttblk_codes
static const uint8_t vc1_ttblk_codes[3][8]
Definition: vc1_vlc_data.h:732
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
ff_wmv3_dc_scale_table
const uint8_t ff_wmv3_dc_scale_table[32]
Definition: vc1data.c:173
VC1DSPContext::vc1_inv_trans_8x4_dc
void(* vc1_inv_trans_8x4_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:42
av_cold
#define av_cold
Definition: attributes.h:90
init_get_bits8
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:545
vc1_1ref_mvdata_bits
static const uint8_t vc1_1ref_mvdata_bits[4][72]
Definition: vc1_vlc_data.h:214
ff_msmp4_vc1_vlcs_init_once
av_cold void ff_msmp4_vc1_vlcs_init_once(void)
Definition: msmpeg4_vc1_data.c:56
VLCInitState
For static VLCs, the number of bits can often be hardcoded at each get_vlc2() callsite.
Definition: vlc.h:212
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
vc1_2mv_block_pattern_codes
static const uint8_t vc1_2mv_block_pattern_codes[4][4]
Definition: vc1_vlc_data.h:81
AVCodecContext::extradata_size
int extradata_size
Definition: avcodec.h:524
AVCodecContext::has_b_frames
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:723
ff_vc1_2mv_block_pattern_vlc
const VLCElem * ff_vc1_2mv_block_pattern_vlc[4]
Definition: vc1data.c:114
ff_er_frame_end
void ff_er_frame_end(ERContext *s, int *decode_error_flags)
Indicate that a frame has finished decoding and perform error concealment in case it has been enabled...
Definition: error_resilience.c:891
av_fast_realloc
void * av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
Reallocate the given buffer if it is not large enough, otherwise do nothing.
Definition: mem.c:497
ff_vc1_decoder
const FFCodec ff_vc1_decoder
Definition: vc1dec.c:1386
VC1_CODE_SLICE
@ VC1_CODE_SLICE
Definition: vc1_common.h:36
width
#define width
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:287
VC1Context::mb_type
uint8_t * mb_type[3]
Definition: vc1.h:262
ff_blockdsp_init
av_cold void ff_blockdsp_init(BlockDSPContext *c)
Definition: blockdsp.c:58
AV_PIX_FMT_DXVA2_VLD
@ AV_PIX_FMT_DXVA2_VLD
HW decoding through DXVA2, Picture.data[3] contains a LPDIRECT3DSURFACE9 pointer.
Definition: pixfmt.h:134
s
#define s(width, name)
Definition: cbs_vp9.c:198
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
vc1_init_static
static av_cold void vc1_init_static(void)
Definition: vc1dec.c:501
vc1_if_mmv_mbmode_codes
static const uint8_t vc1_if_mmv_mbmode_codes[8][8]
Definition: vc1_vlc_data.h:121
VC1Context::mv_f
uint8_t * mv_f[2]
0: MV obtained from same field, 1: opposite field
Definition: vc1.h:347
vc1_ac_tables
static const uint32_t vc1_ac_tables[AC_MODES][186][2]
Definition: vc1_vlc_data.h:838
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
vc1_subblkpat_bits
static const uint8_t vc1_subblkpat_bits[3][15]
Definition: vc1_vlc_data.h:749
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:48
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:40
ff_simple_idct48_add
void ff_simple_idct48_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: simple_idct.c:209
PROFILE_ADVANCED
@ PROFILE_ADVANCED
Definition: vc1_common.h:52
vc1_imode_bits
static const uint8_t vc1_imode_bits[7]
Definition: vc1_vlc_data.h:40
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
vc1_norm2_codes
static const uint8_t vc1_norm2_codes[4]
Definition: vc1_vlc_data.h:45
PICT_TOP_FIELD
#define PICT_TOP_FIELD
Definition: mpegutils.h:31
decode.h
get_bits.h
simple_idct.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:73
AV_CODEC_ID_VC1IMAGE
@ AV_CODEC_ID_VC1IMAGE
Definition: codec_id.h:204
vc1_norm6_bits
static const uint8_t vc1_norm6_bits[64]
Definition: vc1_vlc_data.h:59
ff_intrax8_common_init
av_cold int ff_intrax8_common_init(AVCodecContext *avctx, IntraX8Context *w, int16_t(*block)[64], int block_last_index[12], int mb_width, int mb_height)
Initialize IntraX8 frame decoder.
Definition: intrax8.c:689
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:272
ff_vc1_ttblk_vlc
const VLCElem * ff_vc1_ttblk_vlc[3]
Definition: vc1data.c:115
AVCodecContext::codec_id
enum AVCodecID codec_id
Definition: avcodec.h:455
VC1Context::top_blk_sh
int top_blk_sh
Either 3 or 0, positions of l/t in blk[].
Definition: vc1.h:238
FMT_H263
@ FMT_H263
Definition: mpegvideo.h:65
VC1_INTFR_4MV_MBMODE_VLC_BITS
#define VC1_INTFR_4MV_MBMODE_VLC_BITS
Definition: vc1data.h:81
VC1Context::pq
uint8_t pq
Definition: vc1.h:236
VC1_1REF_MVDATA_VLC_BITS
#define VC1_1REF_MVDATA_VLC_BITS
Definition: vc1data.h:89
AVDISCARD_ALL
@ AVDISCARD_ALL
discard all
Definition: defs.h:219
ff_wmv3_decoder
const FFCodec ff_wmv3_decoder
AV_CODEC_ID_WMV3
@ AV_CODEC_ID_WMV3
Definition: codec_id.h:123
AV_ONCE_INIT
#define AV_ONCE_INIT
Definition: thread.h:203
VC1Context::forward_mb_plane
uint8_t * forward_mb_plane
bitplane for "forward" MBs
Definition: vc1.h:286
NULL
#define NULL
Definition: coverity.c:32
ff_vc1_cbpcy_p_vlc
const VLCElem * ff_vc1_cbpcy_p_vlc[4]
Definition: vc1data.c:111
ff_vc1_if_mmv_mbmode_vlc
const VLCElem * ff_vc1_if_mmv_mbmode_vlc[8]
Definition: vc1data.c:119
ff_simple_idct_add_int16_8bit
void ff_simple_idct_add_int16_8bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:64
AVCodecContext::color_range
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:695
VC1Context::direct_mb_plane
uint8_t * direct_mb_plane
bitplane for "direct" MBs
Definition: vc1.h:285
VC1DSPContext::vc1_inv_trans_8x4
void(* vc1_inv_trans_8x4)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:38
ff_vc1_2ref_mvdata_vlc
const VLCElem * ff_vc1_2ref_mvdata_vlc[8]
Definition: vc1data.c:122
hwaccel_internal.h
ff_vc1_init_transposed_scantables
av_cold void ff_vc1_init_transposed_scantables(VC1Context *v)
Definition: vc1dec.c:486
vc1_cbpcy_p_codes
static const uint16_t vc1_cbpcy_p_codes[4][64]
Definition: vc1_vlc_data.h:474
VC1Context::field_mode
int field_mode
1 for interlaced field pictures
Definition: vc1.h:349
AVCHROMA_LOC_LEFT
@ AVCHROMA_LOC_LEFT
MPEG-2/4 4:2:0, H.264 default for 4:2:0.
Definition: pixfmt.h:707
ff_vc1_decode_blocks
void ff_vc1_decode_blocks(VC1Context *v)
Definition: vc1_block.c:2967
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:728
VC1Context::mvrange
uint8_t mvrange
Ranges:
Definition: vc1.h:280
VC1_CODE_SEQHDR
@ VC1_CODE_SEQHDR
Definition: vc1_common.h:40
VC1Context::block
int16_t(* block)[6][64]
Definition: vc1.h:386
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:279
get_bits1
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:388
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
VC1Context::cbpcy_vlc
const VLCElem * cbpcy_vlc
CBPCY VLC table.
Definition: vc1.h:282
vc1_intfr_non4mv_mbmode_codes
static const uint8_t vc1_intfr_non4mv_mbmode_codes[4][9]
Definition: vc1_vlc_data.h:105
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_D3D12
@ AV_PIX_FMT_D3D12
Hardware surfaces for Direct3D 12.
Definition: pixfmt.h:440
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
VC1_ICBPCY_VLC_BITS
#define VC1_ICBPCY_VLC_BITS
Definition: vc1data.h:71
VC1_CODE_FRAME
@ VC1_CODE_FRAME
Definition: vc1_common.h:38
AVCodecContext::level
int level
Encoding level descriptor.
Definition: avcodec.h:1783
AVCOL_RANGE_UNSPECIFIED
@ AVCOL_RANGE_UNSPECIFIED
Definition: pixfmt.h:652
AVOnce
#define AVOnce
Definition: thread.h:202
VC1DSPContext::vc1_inv_trans_4x8_dc
void(* vc1_inv_trans_4x8_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:43
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_init_common
av_cold void ff_vc1_init_common(VC1Context *v)
Init VC-1 specific tables and VC1Context members.
Definition: vc1dec.c:596
ff_vc1_adv_interlaced_8x8_zz
const uint8_t ff_vc1_adv_interlaced_8x8_zz[64]
Definition: vc1data.c:207
ff_vc1dsp_init
av_cold void ff_vc1dsp_init(VC1DSPContext *dsp)
Definition: vc1dsp.c:974
ff_dlog
#define ff_dlog(a,...)
Definition: tableprint_vlc.h:28
AVDISCARD_NONKEY
@ AVDISCARD_NONKEY
discard all frames except keyframes
Definition: defs.h:218
ff_vc1_icbpcy_vlc
const VLCElem * ff_vc1_icbpcy_vlc[8]
Definition: vc1data.c:112
VC1Context::mv_f_next
uint8_t * mv_f_next[2]
Definition: vc1.h:348
f
f
Definition: af_crystalizer.c:121
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:477
ff_get_buffer
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1554
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts.c:366
VC1_TTBLK_VLC_BITS
#define VC1_TTBLK_VLC_BITS
Definition: vc1data.h:77
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:322
AVPacket::size
int size
Definition: packet.h:525
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:94
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:384
codec_internal.h
ff_vc1_1ref_mvdata_vlc
const VLCElem * ff_vc1_1ref_mvdata_vlc[4]
Definition: vc1data.c:121
VC1Context::ttblk_base
int * ttblk_base
Definition: vc1.h:257
VC1Context::mb_off
int mb_off
Definition: vc1.h:361
ff_wmv3image_decoder
const FFCodec ff_wmv3image_decoder
ff_vc1_mv_diff_vlc
const VLCElem * ff_vc1_mv_diff_vlc[4]
Definition: vc1data.c:110
vc1_norm6_codes
static const uint16_t vc1_norm6_codes[64]
Definition: vc1_vlc_data.h:52
size
int size
Definition: twinvq_data.h:10344
VC1Context::zzi_8x8
uint8_t zzi_8x8[64]
Definition: vc1.h:345
VLCElem
Definition: vlc.h:32
vc1_if_1mv_mbmode_codes
static const uint8_t vc1_if_1mv_mbmode_codes[8][6]
Definition: vc1_vlc_data.h:143
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
ff_vc1_intfr_4mv_mbmode_vlc
const VLCElem * ff_vc1_intfr_4mv_mbmode_vlc[4]
Definition: vc1data.c:117
VC1Context::sprite_width
int sprite_width
Definition: vc1.h:378
ff_vc1_ac_coeff_table
const VLCElem * ff_vc1_ac_coeff_table[8]
Definition: vc1data.c:124
state
static struct @395 state
vc1_ttblk_bits
static const uint8_t vc1_ttblk_bits[3][8]
Definition: vc1_vlc_data.h:737
AVCodecHWConfigInternal
Definition: hwconfig.h:25
vc1_icbpcy_p_bits
static const uint8_t vc1_icbpcy_p_bits[8][63]
Definition: vc1_vlc_data.h:612
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_dec.c:323
ff_mpeg_flush
void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo_dec.c:505
vc1data.h
HWACCEL_D3D11VA
#define HWACCEL_D3D11VA(codec)
Definition: hwconfig.h:78
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
attributes.h
AV_PIX_FMT_D3D11
@ AV_PIX_FMT_D3D11
Hardware surfaces for Direct3D11.
Definition: pixfmt.h:336
HWACCEL_NVDEC
#define HWACCEL_NVDEC(codec)
Definition: hwconfig.h:68
AV_PIX_FMT_VAAPI
@ AV_PIX_FMT_VAAPI
Hardware acceleration through VA-API, data[3] contains a VASurfaceID.
Definition: pixfmt.h:126
VC1DSPContext::vc1_inv_trans_8x8
void(* vc1_inv_trans_8x8)(int16_t *b)
Definition: vc1dsp.h:37
VC1Context::sr_rows
uint8_t * sr_rows[2][2]
Sprite resizer line cache.
Definition: vc1.h:379
VC1_IMODE_VLC_BITS
#define VC1_IMODE_VLC_BITS
Definition: vc1data.h:58
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:191
AV_CODEC_ID_MSS2
@ AV_CODEC_ID_MSS2
Definition: codec_id.h:219
VC1_IF_1MV_MBMODE_VLC_BITS
#define VC1_IF_1MV_MBMODE_VLC_BITS
Definition: vc1data.h:87
AV_PIX_FMT_VDPAU
@ AV_PIX_FMT_VDPAU
HW acceleration through VDPAU, Picture.data[3] contains a VdpVideoSurface.
Definition: pixfmt.h:194
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:40
ff_init_scantable
av_cold void ff_init_scantable(const uint8_t *permutation, ScanTable *st, const uint8_t *src_scantable)
Definition: mpegvideo.c:322
MpegEncContext::current_picture_ptr
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:179
vc1_get_format
static enum AVPixelFormat vc1_get_format(AVCodecContext *avctx)
Definition: vc1dec.c:434
ff_simple_idct_int16_8bit
void ff_simple_idct_int16_8bit(int16_t *block)
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
vc1_if_1mv_mbmode_bits
static const uint8_t vc1_if_1mv_mbmode_bits[8][6]
Definition: vc1_vlc_data.h:153
ff_vc1_intfr_non4mv_mbmode_vlc
const VLCElem * ff_vc1_intfr_non4mv_mbmode_vlc[4]
Definition: vc1data.c:118
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
VC1DSPContext::vc1_unescape_buffer
int(* vc1_unescape_buffer)(const uint8_t *src, int size, uint8_t *dst)
Definition: vc1dsp.h:85
AVCodecContext::extradata
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:523
ff_mpv_decode_init
void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
Initialize the given MpegEncContext for decoding.
Definition: mpegvideo_dec.c:45
vc1_4mv_block_pattern_bits
static const uint8_t vc1_4mv_block_pattern_bits[4][16]
Definition: vc1_vlc_data.h:73
VC1_4MV_BLOCK_PATTERN_VLC_BITS
#define VC1_4MV_BLOCK_PATTERN_VLC_BITS
Definition: vc1data.h:73
ff_vc1_decode_entry_point
int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
Definition: vc1.c:501
ff_vc1_parse_frame_header_adv
int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:844
VC1Context::s
MpegEncContext s
Definition: vc1.h:174
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
ff_vc1_ac_sizes
const int ff_vc1_ac_sizes[AC_MODES]
Definition: vc1_vlc_data.h:1059
av_frame_unref
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:606
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:256
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:194
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:122
VC1_NORM6_VLC_BITS
#define VC1_NORM6_VLC_BITS
Definition: vc1data.h:62
AVCodecContext::height
int height
Definition: avcodec.h:618
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:657
AV_FRAME_FLAG_INTERLACED
#define AV_FRAME_FLAG_INTERLACED
A flag to mark frames whose content is interlaced.
Definition: frame.h:634
AVCOL_RANGE_MPEG
@ AVCOL_RANGE_MPEG
Narrow or limited range content.
Definition: pixfmt.h:669
avcodec.h
VC1Context::second_field
int second_field
Definition: vc1.h:351
vc1_if_mmv_mbmode_bits
static const uint8_t vc1_if_mmv_mbmode_bits[8][8]
Definition: vc1_vlc_data.h:131
ret
ret
Definition: filter_design.txt:187
vc1_icbpcy_p_codes
static const uint16_t vc1_icbpcy_p_codes[8][63]
Definition: vc1_vlc_data.h:529
FFSWAP
#define FFSWAP(type, a, b)
Definition: macros.h:52
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
hwaccel
static const char * hwaccel
Definition: ffplay.c:353
VC1Context::mv_f_next_base
uint8_t * mv_f_next_base
Definition: vc1.h:348
vc1_mv_diff_codes
static const uint16_t vc1_mv_diff_codes[4][73]
Definition: vc1_vlc_data.h:756
AV_INPUT_BUFFER_PADDING_SIZE
#define AV_INPUT_BUFFER_PADDING_SIZE
Definition: defs.h:40
ff_vc1_subblkpat_vlc
const VLCElem * ff_vc1_subblkpat_vlc[3]
Definition: vc1data.c:116
VC1_2MV_BLOCK_PATTERN_VLC_BITS
#define VC1_2MV_BLOCK_PATTERN_VLC_BITS
Definition: vc1data.h:75
AVCodecContext
main external API structure.
Definition: avcodec.h:445
ff_vc1_imode_vlc
VLCElem ff_vc1_imode_vlc[1<< VC1_IMODE_VLC_BITS]
Definition: vc1data.c:105
VC1Context::p_frame_skipped
int p_frame_skipped
Definition: vc1.h:382
AV_PICTURE_TYPE_B
@ AV_PICTURE_TYPE_B
Bi-dir predicted.
Definition: avutil.h:281
vc1_4mv_block_pattern_codes
static const uint8_t vc1_4mv_block_pattern_codes[4][16]
Definition: vc1_vlc_data.h:67
Picture::f
struct AVFrame * f
Definition: mpegpicture.h:47
VC1Context::tff
uint8_t tff
Definition: vc1.h:310
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
VLC_INIT_STATIC_TABLE
#define VLC_INIT_STATIC_TABLE(vlc_table, nb_bits, nb_codes, bits, bits_wrap, bits_size, codes, codes_wrap, codes_size, flags)
Definition: vlc.h:270
AVCodecContext::profile
int profile
profile
Definition: avcodec.h:1639
ffhwaccel
static const FFHWAccel * ffhwaccel(const AVHWAccel *codec)
Definition: hwaccel_internal.h:166
VC1_NORM2_VLC_BITS
#define VC1_NORM2_VLC_BITS
Definition: vc1data.h:60
vc1_ttmb_codes
static const uint16_t vc1_ttmb_codes[3][16]
Definition: vc1_vlc_data.h:671
VC1Context::profile
int profile
Sequence header data for all Profiles TODO: choose between ints, uint8_ts and monobit flags.
Definition: vc1.h:216
ff_mpv_frame_end
void ff_mpv_frame_end(MpegEncContext *s)
Definition: mpegvideo_dec.c:452
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:76
ff_h264chroma_init
av_cold void ff_h264chroma_init(H264ChromaContext *c, int bit_depth)
Definition: h264chroma.c:41
ff_vc1_profiles
const AVProfile ff_vc1_profiles[]
Definition: profiles.c:145
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:1396
av_clip_uint16
#define av_clip_uint16
Definition: common.h:111
VC1Context::bi_type
int bi_type
Definition: vc1.h:383
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:633
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:280
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
ff_vlc_init_tables
static const VLCElem * ff_vlc_init_tables(VLCInitState *state, int nb_bits, int nb_codes, const void *bits, int bits_wrap, int bits_size, const void *codes, int codes_wrap, int codes_size, int flags)
Definition: vlc.h:246
ff_vc1_ttmb_vlc
const VLCElem * ff_vc1_ttmb_vlc[3]
Definition: vc1data.c:109
vc1_2ref_mvdata_codes
static const uint32_t vc1_2ref_mvdata_codes[8][126]
Definition: vc1_vlc_data.h:242
mem.h
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:795
msmpeg4_vc1_data.h
vc1_vlc_data.h
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:36
ff_vc1_norm2_vlc
VLCElem ff_vc1_norm2_vlc[1<< VC1_NORM2_VLC_BITS]
Definition: vc1data.c:106
ff_vc1_4mv_block_pattern_vlc
const VLCElem * ff_vc1_4mv_block_pattern_vlc[4]
Definition: vc1data.c:113
av_free
#define av_free(p)
Definition: tableprint_vlc.h:33
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
VLC_INIT_STATE
#define VLC_INIT_STATE(_table)
Definition: vlc.h:217
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:501
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:472
VC1Context::acpred_plane
uint8_t * acpred_plane
AC prediction flags bitplane.
Definition: vc1.h:320
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
AV_PICTURE_TYPE_BI
@ AV_PICTURE_TYPE_BI
BI type.
Definition: avutil.h:285
VC1_2REF_MVDATA_VLC_BITS
#define VC1_2REF_MVDATA_VLC_BITS
Definition: vc1data.h:91
HWACCEL_VAAPI
#define HWACCEL_VAAPI(codec)
Definition: hwconfig.h:70
vc1_imode_codes
static const uint8_t vc1_imode_codes[7]
Definition: vc1_vlc_data.h:37
mpeg_er.h
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:618
imgutils.h
vc1_decode_init_alloc_tables
static av_cold int vc1_decode_init_alloc_tables(VC1Context *v)
Definition: vc1dec.c:359
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:420
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
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:780
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
vc1_decode_frame
static int vc1_decode_frame(AVCodecContext *avctx, AVFrame *pict, int *got_frame, AVPacket *avpkt)
Decode a VC1/WMV3 frame.
Definition: vc1dec.c:813
VC1Context::blk_mv_type
uint8_t * blk_mv_type
0: frame MV, 1: field MV (interlaced frame)
Definition: vc1.h:346
VC1_MV_DIFF_VLC_BITS
#define VC1_MV_DIFF_VLC_BITS
Definition: vc1data.h:67
AV_CODEC_ID_WMV3IMAGE
@ AV_CODEC_ID_WMV3IMAGE
Definition: codec_id.h:203
av_image_check_size
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
Definition: imgutils.c:318
vc1_1ref_mvdata_codes
static const uint32_t vc1_1ref_mvdata_codes[4][72]
Definition: vc1_vlc_data.h:167
transpose
#define transpose(x)
VC1DSPContext::vc1_inv_trans_4x8
void(* vc1_inv_trans_4x8)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:39
AVDISCARD_NONREF
@ AVDISCARD_NONREF
discard all non reference
Definition: defs.h:215
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:73
ff_wmv1_scantable
const uint8_t ff_wmv1_scantable[WMV1_SCANTABLE_COUNT][64]
Definition: msmpeg4_vc1_data.c:220
VC1Context::rff
uint8_t rff
Definition: vc1.h:310
ff_vc1_decode_init
av_cold int ff_vc1_decode_init(AVCodecContext *avctx)
Definition: vc1dec.c:452
vc1_mv_diff_bits
static const uint8_t vc1_mv_diff_bits[4][73]
Definition: vc1_vlc_data.h:806