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 
55 static const enum AVPixelFormat vc1_hwaccel_pixfmt_list_420[] = {
56 #if CONFIG_VC1_DXVA2_HWACCEL
57  AV_PIX_FMT_DXVA2_VLD,
58 #endif
59 #if CONFIG_VC1_D3D11VA_HWACCEL
60  AV_PIX_FMT_D3D11VA_VLD,
61  AV_PIX_FMT_D3D11,
62 #endif
63 #if CONFIG_VC1_D3D12VA_HWACCEL
64  AV_PIX_FMT_D3D12,
65 #endif
66 #if CONFIG_VC1_NVDEC_HWACCEL
67  AV_PIX_FMT_CUDA,
68 #endif
69 #if CONFIG_VC1_VAAPI_HWACCEL
70  AV_PIX_FMT_VAAPI,
71 #endif
72 #if CONFIG_VC1_VDPAU_HWACCEL
73  AV_PIX_FMT_VDPAU,
74 #endif
75  AV_PIX_FMT_YUV420P,
76  AV_PIX_FMT_NONE
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  const 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  const uint8_t *iplane = s->cur_pic.data[plane];
239  int iline = s->cur_pic.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_pic.data[plane];
246  iline = s->last_pic.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->cur_pic.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_pic.ptr || !s->last_pic.data[0])) {
326  av_log(avctx, AV_LOG_WARNING, "Need two sprites, only got one\n");
327  v->two_sprites = 0;
328  }
329 
330  av_frame_unref(v->sprite_output_frame);
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  MPVWorkPicture *f = &s->cur_pic;
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->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 
359 static av_cold int vc1_decode_init_alloc_tables(VC1Context *v)
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_mallocz(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_mallocz(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, s->block,
426  s->mb_width, s->mb_height);
427  if (ret < 0)
428  return ret;
429 
430  return 0;
431 }
432 
433 static enum AVPixelFormat vc1_get_format(AVCodecContext *avctx)
434 {
435  if (avctx->codec_id == AV_CODEC_ID_MSS2)
436  return AV_PIX_FMT_YUV420P;
437 
438  if (CONFIG_GRAY && (avctx->flags & AV_CODEC_FLAG_GRAY)) {
439  if (avctx->color_range == AVCOL_RANGE_UNSPECIFIED)
440  avctx->color_range = AVCOL_RANGE_MPEG;
441  return AV_PIX_FMT_GRAY8;
442  }
443 
444  if (avctx->codec_id == AV_CODEC_ID_VC1IMAGE ||
445  avctx->codec_id == AV_CODEC_ID_WMV3IMAGE)
446  return AV_PIX_FMT_YUV420P;
447 
448  return ff_get_format(avctx, vc1_hwaccel_pixfmt_list_420);
449 }
450 
451 static void vc1_decode_reset(AVCodecContext *avctx);
452 
453 av_cold int ff_vc1_decode_init(AVCodecContext *avctx)
454 {
455  VC1Context *const v = avctx->priv_data;
456  MpegEncContext *const s = &v->s;
457  int ret;
458 
459  ret = av_image_check_size(avctx->width, avctx->height, 0, avctx);
460  if (ret < 0)
461  return ret;
462 
463  ret = ff_mpv_decode_init(s, avctx);
464  if (ret < 0)
465  return ret;
466 
467  avctx->pix_fmt = vc1_get_format(avctx);
468 
469  ret = ff_mpv_common_init(s);
470  if (ret < 0)
471  return ret;
472 
473  ff_permute_scantable(s->intra_scantable.permutated, ff_wmv1_scantable[1],
474  s->idsp.idct_permutation);
475 
476  ret = vc1_decode_init_alloc_tables(v);
477  if (ret < 0) {
478  vc1_decode_reset(avctx);
479  return ret;
480  }
481  return 0;
482 }
483 
484 av_cold void ff_vc1_init_transposed_scantables(VC1Context *v)
485 {
486  int i;
487  for (i = 0; i < 64; i++) {
488 #define transpose(x) (((x) >> 3) | (((x) & 7) << 3))
489  v->zz_8x8[0][i] = transpose(ff_wmv1_scantable[0][i]);
490  v->zz_8x8[1][i] = transpose(ff_wmv1_scantable[1][i]);
491  v->zz_8x8[2][i] = transpose(ff_wmv1_scantable[2][i]);
492  v->zz_8x8[3][i] = transpose(ff_wmv1_scantable[3][i]);
493  v->zzi_8x8[i] = transpose(ff_vc1_adv_interlaced_8x8_zz[i]);
494  }
495  v->left_blk_sh = 0;
496  v->top_blk_sh = 3;
497 }
498 
499 static av_cold void vc1_init_static(void)
500 {
501  static VLCElem vlc_table[32372];
502  VLCInitState state = VLC_INIT_STATE(vlc_table);
503 
504  VLC_INIT_STATIC_TABLE(ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
505  vc1_norm2_bits, 1, 1,
506  vc1_norm2_codes, 1, 1, 0);
507  VLC_INIT_STATIC_TABLE(ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
508  vc1_norm6_bits, 1, 1,
509  vc1_norm6_codes, 2, 2, 0);
510  VLC_INIT_STATIC_TABLE(ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
511  vc1_imode_bits, 1, 1,
512  vc1_imode_codes, 1, 1, 0);
513  for (int i = 0; i < 3; i++) {
514  ff_vc1_ttmb_vlc[i] =
515  ff_vlc_init_tables(&state, VC1_TTMB_VLC_BITS, 16,
516  vc1_ttmb_bits[i], 1, 1,
517  vc1_ttmb_codes[i], 2, 2, 0);
518  ff_vc1_ttblk_vlc[i] =
519  ff_vlc_init_tables(&state, VC1_TTBLK_VLC_BITS, 8,
520  vc1_ttblk_bits[i], 1, 1,
521  vc1_ttblk_codes[i], 1, 1, 0);
522  ff_vc1_subblkpat_vlc[i] =
523  ff_vlc_init_tables(&state, VC1_SUBBLKPAT_VLC_BITS, 15,
524  vc1_subblkpat_bits[i], 1, 1,
525  vc1_subblkpat_codes[i], 1, 1, 0);
526  }
527  for (int i = 0; i < 4; i++) {
528  ff_vc1_4mv_block_pattern_vlc[i] =
529  ff_vlc_init_tables(&state, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
530  vc1_4mv_block_pattern_bits[i], 1, 1,
531  vc1_4mv_block_pattern_codes[i], 1, 1, 0);
532  ff_vc1_cbpcy_p_vlc[i] =
533  ff_vlc_init_tables(&state, VC1_CBPCY_P_VLC_BITS, 64,
534  vc1_cbpcy_p_bits[i], 1, 1,
535  vc1_cbpcy_p_codes[i], 2, 2, 0);
536  ff_vc1_mv_diff_vlc[i] =
537  ff_vlc_init_tables(&state, VC1_MV_DIFF_VLC_BITS, 73,
538  vc1_mv_diff_bits[i], 1, 1,
539  vc1_mv_diff_codes[i], 2, 2, 0);
540  /* initialize 4MV MBMODE VLC tables for interlaced frame P picture */
541  ff_vc1_intfr_4mv_mbmode_vlc[i] =
542  ff_vlc_init_tables(&state, VC1_INTFR_4MV_MBMODE_VLC_BITS, 15,
543  vc1_intfr_4mv_mbmode_bits[i], 1, 1,
544  vc1_intfr_4mv_mbmode_codes[i], 2, 2, 0);
545  /* initialize NON-4MV MBMODE VLC tables for the same */
546  ff_vc1_intfr_non4mv_mbmode_vlc[i] =
547  ff_vlc_init_tables(&state, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 9,
548  vc1_intfr_non4mv_mbmode_bits[i], 1, 1,
549  vc1_intfr_non4mv_mbmode_codes[i], 1, 1, 0);
550  /* initialize interlaced MVDATA tables (1-Ref) */
551  ff_vc1_1ref_mvdata_vlc[i] =
552  ff_vlc_init_tables(&state, VC1_1REF_MVDATA_VLC_BITS, 72,
553  vc1_1ref_mvdata_bits[i], 1, 1,
554  vc1_1ref_mvdata_codes[i], 4, 4, 0);
555  /* Initialize 2MV Block pattern VLC tables */
556  ff_vc1_2mv_block_pattern_vlc[i] =
557  ff_vlc_init_tables(&state, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 4,
558  vc1_2mv_block_pattern_bits[i], 1, 1,
559  vc1_2mv_block_pattern_codes[i], 1, 1, 0);
560  }
561  for (int i = 0; i < 8; i++) {
562  ff_vc1_ac_coeff_table[i] =
563  ff_vlc_init_tables(&state, AC_VLC_BITS, ff_vc1_ac_sizes[i],
564  &vc1_ac_tables[i][0][1], 8, 4,
565  &vc1_ac_tables[i][0][0], 8, 4, 0);
566  /* initialize interlaced MVDATA tables (2-Ref) */
567  ff_vc1_2ref_mvdata_vlc[i] =
568  ff_vlc_init_tables(&state, VC1_2REF_MVDATA_VLC_BITS, 126,
569  vc1_2ref_mvdata_bits[i], 1, 1,
570  vc1_2ref_mvdata_codes[i], 4, 4, 0);
571  /* Initialize interlaced CBPCY VLC tables (Table 124 - Table 131) */
572  ff_vc1_icbpcy_vlc[i] =
573  ff_vlc_init_tables(&state, VC1_ICBPCY_VLC_BITS, 63,
574  vc1_icbpcy_p_bits[i], 1, 1,
575  vc1_icbpcy_p_codes[i], 2, 2, 0);
576  /* Initialize interlaced field picture MBMODE VLC tables */
577  ff_vc1_if_mmv_mbmode_vlc[i] =
578  ff_vlc_init_tables(&state, VC1_IF_MMV_MBMODE_VLC_BITS, 8,
579  vc1_if_mmv_mbmode_bits[i], 1, 1,
580  vc1_if_mmv_mbmode_codes[i], 1, 1, 0);
581  ff_vc1_if_1mv_mbmode_vlc[i] =
582  ff_vlc_init_tables(&state, VC1_IF_1MV_MBMODE_VLC_BITS, 6,
583  vc1_if_1mv_mbmode_bits[i], 1, 1,
584  vc1_if_1mv_mbmode_codes[i], 1, 1, 0);
585  }
586  ff_msmp4_vc1_vlcs_init_once();
587 }
588 
589 /**
590  * Init VC-1 specific tables and VC1Context members
591  * @param v The VC1Context to initialize
592  * @return Status
593  */
594 av_cold void ff_vc1_init_common(VC1Context *v)
595 {
596  static AVOnce init_static_once = AV_ONCE_INIT;
597  MpegEncContext *const s = &v->s;
598 
599  /* defaults */
600  v->pq = -1;
601  v->mvrange = 0; /* 7.1.1.18, p80 */
602 
603  s->avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
604  s->out_format = FMT_H263;
605 
606  s->h263_pred = 1;
607  s->msmpeg4_version = MSMP4_VC1;
608 
609  ff_vc1dsp_init(&v->vc1dsp);
610 
611  /* For error resilience */
612  ff_qpeldsp_init(&s->qdsp);
613 
614  /* VLC tables */
615  ff_thread_once(&init_static_once, vc1_init_static);
616 }
617 
618 /** Initialize a VC1/WMV3 decoder
619  * @todo TODO: Handle VC-1 IDUs (Transport level?)
620  * @todo TODO: Decipher remaining bits in extra_data
621  */
622 static av_cold int vc1_decode_init(AVCodecContext *avctx)
623 {
624  VC1Context *v = avctx->priv_data;
625  MpegEncContext *s = &v->s;
626  GetBitContext gb;
627  int ret;
628 
629  /* save the container output size for WMImage */
630  v->output_width = avctx->width;
631  v->output_height = avctx->height;
632 
633  if (!avctx->extradata_size || !avctx->extradata)
634  return AVERROR_INVALIDDATA;
635  v->s.avctx = avctx;
636 
637  ff_vc1_init_common(v);
638 
639  if (avctx->codec_id == AV_CODEC_ID_WMV3 || avctx->codec_id == AV_CODEC_ID_WMV3IMAGE) {
640  int count = 0;
641 
642  // looks like WMV3 has a sequence header stored in the extradata
643  // advanced sequence header may be before the first frame
644  // the last byte of the extradata is a version number, 1 for the
645  // samples we can decode
646 
647  ret = init_get_bits8(&gb, avctx->extradata, avctx->extradata_size);
648  if (ret < 0)
649  return ret;
650 
651  if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0)
652  return ret;
653 
654  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE && !v->res_sprite) {
655  avpriv_request_sample(avctx, "Non sprite WMV3IMAGE");
656  return AVERROR_PATCHWELCOME;
657  }
658 
659  count = avctx->extradata_size*8 - get_bits_count(&gb);
660  if (count > 0) {
661  av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
662  count, get_bits_long(&gb, FFMIN(count, 32)));
663  } else if (count < 0) {
664  av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
665  }
666  } else { // VC1/WVC1/WVP2
667  const uint8_t *start = avctx->extradata;
668  const uint8_t *end = avctx->extradata + avctx->extradata_size;
669  const uint8_t *next;
670  int size, buf2_size;
671  uint8_t *buf2 = NULL;
672  int seq_initialized = 0, ep_initialized = 0;
673 
674  if (avctx->extradata_size < 16) {
675  av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
676  return AVERROR_INVALIDDATA;
677  }
678 
679  buf2 = av_mallocz(avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
680  if (!buf2)
681  return AVERROR(ENOMEM);
682 
683  start = find_next_marker(start, end); // in WVC1 extradata first byte is its size, but can be 0 in mkv
684  next = start;
685  for (; next < end; start = next) {
686  next = find_next_marker(start + 4, end);
687  size = next - start - 4;
688  if (size <= 0)
689  continue;
690  buf2_size = v->vc1dsp.vc1_unescape_buffer(start + 4, size, buf2);
691  init_get_bits(&gb, buf2, buf2_size * 8);
692  switch (AV_RB32(start)) {
693  case VC1_CODE_SEQHDR:
694  if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0) {
695  av_free(buf2);
696  return ret;
697  }
698  seq_initialized = 1;
699  break;
700  case VC1_CODE_ENTRYPOINT:
701  if ((ret = ff_vc1_decode_entry_point(avctx, v, &gb)) < 0) {
702  av_free(buf2);
703  return ret;
704  }
705  ep_initialized = 1;
706  break;
707  }
708  }
709  av_free(buf2);
710  if (!seq_initialized || !ep_initialized) {
711  av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
712  return AVERROR_INVALIDDATA;
713  }
714  v->res_sprite = (avctx->codec_id == AV_CODEC_ID_VC1IMAGE);
715  }
716 
717  avctx->profile = v->profile;
718  if (v->profile == PROFILE_ADVANCED)
719  avctx->level = v->level;
720 
721  ff_blockdsp_init(&s->bdsp);
722  ff_h264chroma_init(&v->h264chroma, 8);
723 
724  avctx->has_b_frames = !!avctx->max_b_frames;
725 
726  if (v->color_prim == 1 || v->color_prim == 5 || v->color_prim == 6)
727  avctx->color_primaries = v->color_prim;
728  if (v->transfer_char == 1 || v->transfer_char == 7)
729  avctx->color_trc = v->transfer_char;
730  if (v->matrix_coef == 1 || v->matrix_coef == 6 || v->matrix_coef == 7)
731  avctx->colorspace = v->matrix_coef;
732 
733  s->mb_width = (avctx->coded_width + 15) >> 4;
734  s->mb_height = (avctx->coded_height + 15) >> 4;
735 
736  if (v->profile == PROFILE_ADVANCED || v->res_fasttx) {
737  ff_vc1_init_transposed_scantables(v);
738  } else {
739  memcpy(v->zz_8x8, ff_wmv1_scantable, 4*64);
740  v->left_blk_sh = 3;
741  v->top_blk_sh = 0;
742  v->vc1dsp.vc1_inv_trans_8x8 = ff_simple_idct_int16_8bit;
743  v->vc1dsp.vc1_inv_trans_8x4 = ff_simple_idct84_add;
744  v->vc1dsp.vc1_inv_trans_4x8 = ff_simple_idct48_add;
745  v->vc1dsp.vc1_inv_trans_4x4 = ff_simple_idct44_add;
746  v->vc1dsp.vc1_inv_trans_8x8_dc = ff_simple_idct_add_int16_8bit;
747  v->vc1dsp.vc1_inv_trans_8x4_dc = ff_simple_idct84_add;
748  v->vc1dsp.vc1_inv_trans_4x8_dc = ff_simple_idct48_add;
749  v->vc1dsp.vc1_inv_trans_4x4_dc = ff_simple_idct44_add;
750  }
751 
752  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
753  v->sprite_width = avctx->coded_width;
754  v->sprite_height = avctx->coded_height;
755 
756  avctx->coded_width = avctx->width = v->output_width;
757  avctx->coded_height = avctx->height = v->output_height;
758 
759  // prevent 16.16 overflows
760  if (v->sprite_width > 1 << 14 ||
761  v->sprite_height > 1 << 14 ||
762  v->output_width > 1 << 14 ||
763  v->output_height > 1 << 14) {
764  return AVERROR_INVALIDDATA;
765  }
766 
767  if ((v->sprite_width&1) || (v->sprite_height&1)) {
768  avpriv_request_sample(avctx, "odd sprites support");
769  return AVERROR_PATCHWELCOME;
770  }
771  }
772  return 0;
773 }
774 
775 static av_cold void vc1_decode_reset(AVCodecContext *avctx)
776 {
777  VC1Context *v = avctx->priv_data;
778  int i;
779 
780  av_frame_free(&v->sprite_output_frame);
781 
782  for (i = 0; i < 4; i++)
783  av_freep(&v->sr_rows[i >> 1][i & 1]);
784  ff_mpv_common_end(&v->s);
785  memset(v->s.block_index, 0, sizeof(v->s.block_index));
786  av_freep(&v->mv_type_mb_plane);
787  av_freep(&v->direct_mb_plane);
788  av_freep(&v->forward_mb_plane);
789  av_freep(&v->fieldtx_plane);
790  av_freep(&v->acpred_plane);
791  av_freep(&v->over_flags_plane);
792  av_freep(&v->mb_type_base);
793  av_freep(&v->blk_mv_type_base);
794  av_freep(&v->mv_f_base);
795  av_freep(&v->mv_f_next_base);
796  av_freep(&v->block);
797  av_freep(&v->cbp_base);
798  av_freep(&v->ttblk_base);
799  av_freep(&v->is_intra_base); // FIXME use v->mb_type[]
800  av_freep(&v->luma_mv_base);
801  ff_intrax8_common_end(&v->x8);
802 }
803 
804 /**
805  * Close a MSS2/VC1/WMV3 decoder
806  */
807 av_cold int ff_vc1_decode_end(AVCodecContext *avctx)
808 {
809  vc1_decode_reset(avctx);
810  return ff_mpv_decode_close(avctx);
811 }
812 
813 /** Decode a VC1/WMV3 frame
814  * @todo TODO: Handle VC-1 IDUs (Transport level?)
815  */
816 static int vc1_decode_frame(AVCodecContext *avctx, AVFrame *pict,
817  int *got_frame, AVPacket *avpkt)
818 {
819  const uint8_t *buf = avpkt->data;
820  int buf_size = avpkt->size, n_slices = 0, i, ret;
821  VC1Context *v = avctx->priv_data;
822  MpegEncContext *s = &v->s;
823  uint8_t *buf2 = NULL;
824  const uint8_t *buf_start = buf, *buf_start_second_field = NULL;
825  int mb_height, n_slices1=-1;
826  struct {
827  uint8_t *buf;
828  GetBitContext gb;
829  int mby_start;
830  const uint8_t *rawbuf;
831  int raw_size;
832  } *slices = NULL, *tmp;
833  unsigned slices_allocated = 0;
834 
835  v->second_field = 0;
836 
837  if(s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY)
838  s->low_delay = 1;
839 
840  /* no supplementary picture */
841  if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == VC1_CODE_ENDOFSEQ)) {
842  /* special case for last picture */
843  if (s->low_delay == 0 && s->next_pic.ptr) {
844  if ((ret = av_frame_ref(pict, s->next_pic.ptr->f)) < 0)
845  return ret;
846  ff_mpv_unref_picture(&s->next_pic);
847 
848  *got_frame = 1;
849  }
850 
851  return buf_size;
852  }
853 
854  //for advanced profile we may need to parse and unescape data
855  if (avctx->codec_id == AV_CODEC_ID_VC1 || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
856  int buf_size2 = 0;
857  size_t next_allocated = 0;
858  buf2 = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
859  if (!buf2)
860  return AVERROR(ENOMEM);
861 
862  if (IS_MARKER(AV_RB32(buf))) { /* frame starts with marker and needs to be parsed */
863  const uint8_t *start, *end, *next;
864  int size;
865 
866  next = buf;
867  for (start = buf, end = buf + buf_size; next < end; start = next) {
868  next = find_next_marker(start + 4, end);
869  size = next - start - 4;
870  if (size <= 0) continue;
871  switch (AV_RB32(start)) {
872  case VC1_CODE_FRAME:
873  buf_start = start;
874  buf_size2 = v->vc1dsp.vc1_unescape_buffer(start + 4, size, buf2);
875  break;
876  case VC1_CODE_FIELD: {
877  int buf_size3;
878  buf_start_second_field = start;
879  av_size_mult(sizeof(*slices), n_slices+1, &next_allocated);
880  tmp = next_allocated ? av_fast_realloc(slices, &slices_allocated, next_allocated) : NULL;
881  if (!tmp) {
882  ret = AVERROR(ENOMEM);
883  goto err;
884  }
885  slices = tmp;
886  slices[n_slices].buf = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
887  if (!slices[n_slices].buf) {
888  ret = AVERROR(ENOMEM);
889  goto err;
890  }
891  buf_size3 = v->vc1dsp.vc1_unescape_buffer(start + 4, size,
892  slices[n_slices].buf);
893  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
894  buf_size3 << 3);
895  slices[n_slices].mby_start = avctx->coded_height + 31 >> 5;
896  slices[n_slices].rawbuf = start;
897  slices[n_slices].raw_size = size + 4;
898  n_slices1 = n_slices - 1; // index of the last slice of the first field
899  n_slices++;
900  break;
901  }
902  case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
903  buf_size2 = v->vc1dsp.vc1_unescape_buffer(start + 4, size, buf2);
904  init_get_bits(&s->gb, buf2, buf_size2 * 8);
905  ff_vc1_decode_entry_point(avctx, v, &s->gb);
906  break;
907  case VC1_CODE_SLICE: {
908  int buf_size3;
909  av_size_mult(sizeof(*slices), n_slices+1, &next_allocated);
910  tmp = next_allocated ? av_fast_realloc(slices, &slices_allocated, next_allocated) : NULL;
911  if (!tmp) {
912  ret = AVERROR(ENOMEM);
913  goto err;
914  }
915  slices = tmp;
916  slices[n_slices].buf = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
917  if (!slices[n_slices].buf) {
918  ret = AVERROR(ENOMEM);
919  goto err;
920  }
921  buf_size3 = v->vc1dsp.vc1_unescape_buffer(start + 4, size,
922  slices[n_slices].buf);
923  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
924  buf_size3 << 3);
925  slices[n_slices].mby_start = get_bits(&slices[n_slices].gb, 9);
926  slices[n_slices].rawbuf = start;
927  slices[n_slices].raw_size = size + 4;
928  n_slices++;
929  break;
930  }
931  }
932  }
933  } else if (v->interlace && ((buf[0] & 0xC0) == 0xC0)) { /* WVC1 interlaced stores both fields divided by marker */
934  const uint8_t *divider;
935  int buf_size3;
936 
937  divider = find_next_marker(buf, buf + buf_size);
938  if ((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD) {
939  av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
940  ret = AVERROR_INVALIDDATA;
941  goto err;
942  } else { // found field marker, unescape second field
943  buf_start_second_field = divider;
944  av_size_mult(sizeof(*slices), n_slices+1, &next_allocated);
945  tmp = next_allocated ? av_fast_realloc(slices, &slices_allocated, next_allocated) : NULL;
946  if (!tmp) {
947  ret = AVERROR(ENOMEM);
948  goto err;
949  }
950  slices = tmp;
951  slices[n_slices].buf = av_mallocz(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
952  if (!slices[n_slices].buf) {
953  ret = AVERROR(ENOMEM);
954  goto err;
955  }
956  buf_size3 = v->vc1dsp.vc1_unescape_buffer(divider + 4, buf + buf_size - divider - 4, slices[n_slices].buf);
957  init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
958  buf_size3 << 3);
959  slices[n_slices].mby_start = s->mb_height + 1 >> 1;
960  slices[n_slices].rawbuf = divider;
961  slices[n_slices].raw_size = buf + buf_size - divider;
962  n_slices1 = n_slices - 1;
963  n_slices++;
964  }
965  buf_size2 = v->vc1dsp.vc1_unescape_buffer(buf, divider - buf, buf2);
966  } else {
967  buf_size2 = v->vc1dsp.vc1_unescape_buffer(buf, buf_size, buf2);
968  }
969  init_get_bits(&s->gb, buf2, buf_size2*8);
970  } else{
971  ret = init_get_bits8(&s->gb, buf, buf_size);
972  if (ret < 0)
973  return ret;
974  }
975 
976  if (v->res_sprite) {
977  v->new_sprite = !get_bits1(&s->gb);
978  v->two_sprites = get_bits1(&s->gb);
979  /* res_sprite means a Windows Media Image stream, AV_CODEC_ID_*IMAGE means
980  we're using the sprite compositor. These are intentionally kept separate
981  so you can get the raw sprites by using the wmv3 decoder for WMVP or
982  the vc1 one for WVP2 */
983  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
984  if (v->new_sprite) {
985  // switch AVCodecContext parameters to those of the sprites
986  avctx->width = avctx->coded_width = v->sprite_width;
987  avctx->height = avctx->coded_height = v->sprite_height;
988  } else {
989  goto image;
990  }
991  }
992  }
993 
994  if (s->context_initialized &&
995  (s->width != avctx->coded_width ||
996  s->height != avctx->coded_height)) {
997  vc1_decode_reset(avctx);
998  }
999 
1000  if (!s->context_initialized) {
1001  ret = ff_vc1_decode_init(avctx);
1002  if (ret < 0)
1003  goto err;
1004 
1005  s->low_delay = !avctx->has_b_frames || v->res_sprite;
1006 
1007  if (v->profile == PROFILE_ADVANCED) {
1008  if(avctx->coded_width<=1 || avctx->coded_height<=1) {
1009  ret = AVERROR_INVALIDDATA;
1010  goto err;
1011  }
1012  s->h_edge_pos = avctx->coded_width;
1013  s->v_edge_pos = avctx->coded_height;
1014  }
1015  }
1016 
1017  // do parse frame header
1018  v->pic_header_flag = 0;
1019  v->first_pic_header_flag = 1;
1020  if (v->profile < PROFILE_ADVANCED) {
1021  if ((ret = ff_vc1_parse_frame_header(v, &s->gb)) < 0) {
1022  goto err;
1023  }
1024  } else {
1025  if ((ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1026  goto err;
1027  }
1028  }
1029  v->first_pic_header_flag = 0;
1030 
1031  if (avctx->debug & FF_DEBUG_PICT_INFO)
1032  av_log(v->s.avctx, AV_LOG_DEBUG, "pict_type: %c\n", av_get_picture_type_char(s->pict_type));
1033 
1034  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
1035  && s->pict_type != AV_PICTURE_TYPE_I) {
1036  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected I-frame\n");
1037  ret = AVERROR_INVALIDDATA;
1038  goto err;
1039  }
1040  if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
1041  && v->field_mode) {
1042  av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected Frames not Fields\n");
1043  ret = AVERROR_INVALIDDATA;
1044  goto err;
1045  }
1046  if ((s->mb_height >> v->field_mode) == 0) {
1047  av_log(v->s.avctx, AV_LOG_ERROR, "image too short\n");
1048  ret = AVERROR_INVALIDDATA;
1049  goto err;
1050  }
1051 
1052  /* skip B-frames if we don't have reference frames */
1053  if (!s->last_pic.ptr && s->pict_type == AV_PICTURE_TYPE_B) {
1054  av_log(v->s.avctx, AV_LOG_DEBUG, "Skipping B frame without reference frames\n");
1055  goto end;
1056  }
1057  if ((avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B) ||
1058  (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I) ||
1059  avctx->skip_frame >= AVDISCARD_ALL) {
1060  goto end;
1061  }
1062 
1063  if ((ret = ff_mpv_frame_start(s, avctx)) < 0) {
1064  goto err;
1065  }
1066 
1067  v->s.cur_pic.ptr->field_picture = v->field_mode;
1068  v->s.cur_pic.ptr->f->flags |= AV_FRAME_FLAG_INTERLACED * (v->fcm != PROGRESSIVE);
1069  v->s.cur_pic.ptr->f->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST * !!v->tff;
1070  v->last_interlaced = v->s.last_pic.ptr ? v->s.last_pic.ptr->f->flags & AV_FRAME_FLAG_INTERLACED : 0;
1071  v->next_interlaced = v->s.next_pic.ptr ? v->s.next_pic.ptr->f->flags & AV_FRAME_FLAG_INTERLACED : 0;
1072 
1073  // process pulldown flags
1074  s->cur_pic.ptr->f->repeat_pict = 0;
1075  // Pulldown flags are only valid when 'broadcast' has been set.
1076  if (v->rff) {
1077  // repeat field
1078  s->cur_pic.ptr->f->repeat_pict = 1;
1079  } else if (v->rptfrm) {
1080  // repeat frames
1081  s->cur_pic.ptr->f->repeat_pict = v->rptfrm * 2;
1082  }
1083 
1084  if (avctx->hwaccel) {
1085  const FFHWAccel *hwaccel = ffhwaccel(avctx->hwaccel);
1086  s->mb_y = 0;
1087  if (v->field_mode && buf_start_second_field) {
1088  // decode first field
1089  s->picture_structure = PICT_BOTTOM_FIELD - v->tff;
1090  ret = hwaccel->start_frame(avctx, avpkt->buf, buf_start,
1091  buf_start_second_field - buf_start);
1092  if (ret < 0)
1093  goto err;
1094 
1095  if (n_slices1 == -1) {
1096  // no slices, decode the field as-is
1097  ret = hwaccel->decode_slice(avctx, buf_start,
1098  buf_start_second_field - buf_start);
1099  if (ret < 0)
1100  goto err;
1101  } else {
1102  ret = hwaccel->decode_slice(avctx, buf_start,
1103  slices[0].rawbuf - buf_start);
1104  if (ret < 0)
1105  goto err;
1106 
1107  for (i = 0 ; i < n_slices1 + 1; i++) {
1108  s->gb = slices[i].gb;
1109  s->mb_y = slices[i].mby_start;
1110 
1111  v->pic_header_flag = get_bits1(&s->gb);
1112  if (v->pic_header_flag) {
1113  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1114  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1115  ret = AVERROR_INVALIDDATA;
1116  if (avctx->err_recognition & AV_EF_EXPLODE)
1117  goto err;
1118  continue;
1119  }
1120  }
1121 
1122  ret = hwaccel->decode_slice(avctx, slices[i].rawbuf,
1123  slices[i].raw_size);
1124  if (ret < 0)
1125  goto err;
1126  }
1127  }
1128 
1129  if ((ret = hwaccel->end_frame(avctx)) < 0)
1130  goto err;
1131 
1132  // decode second field
1133  s->gb = slices[n_slices1 + 1].gb;
1134  s->mb_y = slices[n_slices1 + 1].mby_start;
1135  s->picture_structure = PICT_TOP_FIELD + v->tff;
1136  v->second_field = 1;
1137  v->pic_header_flag = 0;
1138  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1139  av_log(avctx, AV_LOG_ERROR, "parsing header for second field failed");
1140  ret = AVERROR_INVALIDDATA;
1141  goto err;
1142  }
1143  v->s.cur_pic.ptr->f->pict_type = v->s.pict_type;
1144 
1145  ret = hwaccel->start_frame(avctx, avpkt->buf, buf_start_second_field,
1146  (buf + buf_size) - buf_start_second_field);
1147  if (ret < 0)
1148  goto err;
1149 
1150  if (n_slices - n_slices1 == 2) {
1151  // no slices, decode the field as-is
1152  ret = hwaccel->decode_slice(avctx, buf_start_second_field,
1153  (buf + buf_size) - buf_start_second_field);
1154  if (ret < 0)
1155  goto err;
1156  } else {
1157  ret = hwaccel->decode_slice(avctx, buf_start_second_field,
1158  slices[n_slices1 + 2].rawbuf - buf_start_second_field);
1159  if (ret < 0)
1160  goto err;
1161 
1162  for (i = n_slices1 + 2; i < n_slices; i++) {
1163  s->gb = slices[i].gb;
1164  s->mb_y = slices[i].mby_start;
1165 
1166  v->pic_header_flag = get_bits1(&s->gb);
1167  if (v->pic_header_flag) {
1168  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1169  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1170  ret = AVERROR_INVALIDDATA;
1171  if (avctx->err_recognition & AV_EF_EXPLODE)
1172  goto err;
1173  continue;
1174  }
1175  }
1176 
1177  ret = hwaccel->decode_slice(avctx, slices[i].rawbuf,
1178  slices[i].raw_size);
1179  if (ret < 0)
1180  goto err;
1181  }
1182  }
1183 
1184  if ((ret = hwaccel->end_frame(avctx)) < 0)
1185  goto err;
1186  } else {
1187  s->picture_structure = PICT_FRAME;
1188  ret = hwaccel->start_frame(avctx, avpkt->buf, buf_start,
1189  (buf + buf_size) - buf_start);
1190  if (ret < 0)
1191  goto err;
1192 
1193  if (n_slices == 0) {
1194  // no slices, decode the frame as-is
1195  ret = hwaccel->decode_slice(avctx, buf_start,
1196  (buf + buf_size) - buf_start);
1197  if (ret < 0)
1198  goto err;
1199  } else {
1200  // decode the frame part as the first slice
1201  ret = hwaccel->decode_slice(avctx, buf_start,
1202  slices[0].rawbuf - buf_start);
1203  if (ret < 0)
1204  goto err;
1205 
1206  // and process the slices as additional slices afterwards
1207  for (i = 0 ; i < n_slices; i++) {
1208  s->gb = slices[i].gb;
1209  s->mb_y = slices[i].mby_start;
1210 
1211  v->pic_header_flag = get_bits1(&s->gb);
1212  if (v->pic_header_flag) {
1213  if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
1214  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1215  ret = AVERROR_INVALIDDATA;
1216  if (avctx->err_recognition & AV_EF_EXPLODE)
1217  goto err;
1218  continue;
1219  }
1220  }
1221 
1222  ret = hwaccel->decode_slice(avctx, slices[i].rawbuf,
1223  slices[i].raw_size);
1224  if (ret < 0)
1225  goto err;
1226  }
1227  }
1228  if ((ret = hwaccel->end_frame(avctx)) < 0)
1229  goto err;
1230  }
1231  } else {
1232  int header_ret = 0;
1233 
1234  ff_mpeg_er_frame_start(s);
1235 
1236  v->end_mb_x = s->mb_width;
1237  if (v->field_mode) {
1238  s->cur_pic.linesize[0] <<= 1;
1239  s->cur_pic.linesize[1] <<= 1;
1240  s->cur_pic.linesize[2] <<= 1;
1241  s->linesize <<= 1;
1242  s->uvlinesize <<= 1;
1243  }
1244  mb_height = s->mb_height >> v->field_mode;
1245 
1246  av_assert0 (mb_height > 0);
1247 
1248  for (i = 0; i <= n_slices; i++) {
1249  if (i > 0 && slices[i - 1].mby_start >= mb_height) {
1250  if (v->field_mode <= 0) {
1251  av_log(v->s.avctx, AV_LOG_ERROR, "Slice %d starts beyond "
1252  "picture boundary (%d >= %d)\n", i,
1253  slices[i - 1].mby_start, mb_height);
1254  continue;
1255  }
1256  v->second_field = 1;
1257  av_assert0((s->mb_height & 1) == 0);
1258  v->blocks_off = s->b8_stride * (s->mb_height&~1);
1259  v->mb_off = s->mb_stride * s->mb_height >> 1;
1260  } else {
1261  v->second_field = 0;
1262  v->blocks_off = 0;
1263  v->mb_off = 0;
1264  }
1265  if (i) {
1266  v->pic_header_flag = 0;
1267  if (v->field_mode && i == n_slices1 + 2) {
1268  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1269  av_log(v->s.avctx, AV_LOG_ERROR, "Field header damaged\n");
1270  ret = AVERROR_INVALIDDATA;
1271  if (avctx->err_recognition & AV_EF_EXPLODE)
1272  goto err;
1273  continue;
1274  }
1275  } else if (get_bits1(&s->gb)) {
1276  v->pic_header_flag = 1;
1277  if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
1278  av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
1279  ret = AVERROR_INVALIDDATA;
1280  if (avctx->err_recognition & AV_EF_EXPLODE)
1281  goto err;
1282  continue;
1283  }
1284  }
1285  }
1286  if (header_ret < 0)
1287  continue;
1288  s->start_mb_y = (i == 0) ? 0 : FFMAX(0, slices[i-1].mby_start % mb_height);
1289  if (!v->field_mode || v->second_field)
1290  s->end_mb_y = (i == n_slices ) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1291  else {
1292  if (i >= n_slices) {
1293  av_log(v->s.avctx, AV_LOG_ERROR, "first field slice count too large\n");
1294  continue;
1295  }
1296  s->end_mb_y = (i == n_slices1 + 1) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
1297  }
1298  if (s->end_mb_y <= s->start_mb_y) {
1299  av_log(v->s.avctx, AV_LOG_ERROR, "end mb y %d %d invalid\n", s->end_mb_y, s->start_mb_y);
1300  continue;
1301  }
1302  if (((s->pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) ||
1303  (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type)) &&
1304  !v->cbpcy_vlc) {
1305  av_log(v->s.avctx, AV_LOG_ERROR, "missing cbpcy_vlc\n");
1306  continue;
1307  }
1308  ff_vc1_decode_blocks(v);
1309  if (i != n_slices) {
1310  s->gb = slices[i].gb;
1311  }
1312  }
1313  if (v->field_mode) {
1314  v->second_field = 0;
1315  s->cur_pic.linesize[0] >>= 1;
1316  s->cur_pic.linesize[1] >>= 1;
1317  s->cur_pic.linesize[2] >>= 1;
1318  s->linesize >>= 1;
1319  s->uvlinesize >>= 1;
1320  if (v->s.pict_type != AV_PICTURE_TYPE_BI && v->s.pict_type != AV_PICTURE_TYPE_B) {
1321  FFSWAP(uint8_t *, v->mv_f_next[0], v->mv_f[0]);
1322  FFSWAP(uint8_t *, v->mv_f_next[1], v->mv_f[1]);
1323  }
1324  }
1325  ff_dlog(s->avctx, "Consumed %i/%i bits\n",
1326  get_bits_count(&s->gb), s->gb.size_in_bits);
1327 // if (get_bits_count(&s->gb) > buf_size * 8)
1328 // return -1;
1329  if(s->er.error_occurred && s->pict_type == AV_PICTURE_TYPE_B) {
1330  ret = AVERROR_INVALIDDATA;
1331  goto err;
1332  }
1333  if ( !v->field_mode
1334  && avctx->codec_id != AV_CODEC_ID_WMV3IMAGE
1335  && avctx->codec_id != AV_CODEC_ID_VC1IMAGE)
1336  ff_er_frame_end(&s->er, NULL);
1337  }
1338 
1339  ff_mpv_frame_end(s);
1340 
1341  if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
1342 image:
1343  avctx->width = avctx->coded_width = v->output_width;
1344  avctx->height = avctx->coded_height = v->output_height;
1345  if (avctx->skip_frame >= AVDISCARD_NONREF)
1346  goto end;
1347  if (!v->sprite_output_frame &&
1348  !(v->sprite_output_frame = av_frame_alloc())) {
1349  ret = AVERROR(ENOMEM);
1350  goto err;
1351  }
1352 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
1353  if ((ret = vc1_decode_sprites(v, &s->gb)) < 0)
1354  goto err;
1355 #endif
1356  if ((ret = av_frame_ref(pict, v->sprite_output_frame)) < 0)
1357  goto err;
1358  *got_frame = 1;
1359  } else {
1360  if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
1361  if ((ret = av_frame_ref(pict, s->cur_pic.ptr->f)) < 0)
1362  goto err;
1363  ff_print_debug_info(s, s->cur_pic.ptr, pict);
1364  *got_frame = 1;
1365  } else if (s->last_pic.ptr) {
1366  if ((ret = av_frame_ref(pict, s->last_pic.ptr->f)) < 0)
1367  goto err;
1368  ff_print_debug_info(s, s->last_pic.ptr, pict);
1369  *got_frame = 1;
1370  }
1371  }
1372 
1373 end:
1374  av_free(buf2);
1375  for (i = 0; i < n_slices; i++)
1376  av_free(slices[i].buf);
1377  av_free(slices);
1378  return buf_size;
1379 
1380 err:
1381  av_free(buf2);
1382  for (i = 0; i < n_slices; i++)
1383  av_free(slices[i].buf);
1384  av_free(slices);
1385  return ret;
1386 }
1387 
1388 
1389 const FFCodec ff_vc1_decoder = {
1390  .p.name = "vc1",
1391  CODEC_LONG_NAME("SMPTE VC-1"),
1392  .p.type = AVMEDIA_TYPE_VIDEO,
1393  .p.id = AV_CODEC_ID_VC1,
1394  .priv_data_size = sizeof(VC1Context),
1395  .init = vc1_decode_init,
1396  .close = ff_vc1_decode_end,
1397  FF_CODEC_DECODE_CB(vc1_decode_frame),
1398  .flush = ff_mpeg_flush,
1399  .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1400  .hw_configs = (const AVCodecHWConfigInternal *const []) {
1401 #if CONFIG_VC1_DXVA2_HWACCEL
1402  HWACCEL_DXVA2(vc1),
1403 #endif
1404 #if CONFIG_VC1_D3D11VA_HWACCEL
1405  HWACCEL_D3D11VA(vc1),
1406 #endif
1407 #if CONFIG_VC1_D3D11VA2_HWACCEL
1408  HWACCEL_D3D11VA2(vc1),
1409 #endif
1410 #if CONFIG_VC1_D3D12VA_HWACCEL
1411  HWACCEL_D3D12VA(vc1),
1412 #endif
1413 #if CONFIG_VC1_NVDEC_HWACCEL
1414  HWACCEL_NVDEC(vc1),
1415 #endif
1416 #if CONFIG_VC1_VAAPI_HWACCEL
1417  HWACCEL_VAAPI(vc1),
1418 #endif
1419 #if CONFIG_VC1_VDPAU_HWACCEL
1420  HWACCEL_VDPAU(vc1),
1421 #endif
1422  NULL
1423  },
1424  .p.profiles = NULL_IF_CONFIG_SMALL(ff_vc1_profiles)
1425 };
1426 
1427 #if CONFIG_WMV3_DECODER
1428 const FFCodec ff_wmv3_decoder = {
1429  .p.name = "wmv3",
1430  CODEC_LONG_NAME("Windows Media Video 9"),
1431  .p.type = AVMEDIA_TYPE_VIDEO,
1432  .p.id = AV_CODEC_ID_WMV3,
1433  .priv_data_size = sizeof(VC1Context),
1434  .init = vc1_decode_init,
1435  .close = ff_vc1_decode_end,
1436  FF_CODEC_DECODE_CB(vc1_decode_frame),
1437  .flush = ff_mpeg_flush,
1438  .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
1439  .hw_configs = (const AVCodecHWConfigInternal *const []) {
1440 #if CONFIG_WMV3_DXVA2_HWACCEL
1441  HWACCEL_DXVA2(wmv3),
1442 #endif
1443 #if CONFIG_WMV3_D3D11VA_HWACCEL
1444  HWACCEL_D3D11VA(wmv3),
1445 #endif
1446 #if CONFIG_WMV3_D3D11VA2_HWACCEL
1447  HWACCEL_D3D11VA2(wmv3),
1448 #endif
1449 #if CONFIG_WMV3_D3D12VA_HWACCEL
1450  HWACCEL_D3D12VA(wmv3),
1451 #endif
1452 #if CONFIG_WMV3_NVDEC_HWACCEL
1453  HWACCEL_NVDEC(wmv3),
1454 #endif
1455 #if CONFIG_WMV3_VAAPI_HWACCEL
1456  HWACCEL_VAAPI(wmv3),
1457 #endif
1458 #if CONFIG_WMV3_VDPAU_HWACCEL
1459  HWACCEL_VDPAU(wmv3),
1460 #endif
1461  NULL
1462  },
1463  .p.profiles = NULL_IF_CONFIG_SMALL(ff_vc1_profiles)
1464 };
1465 #endif
1466 
1467 #if CONFIG_WMV3IMAGE_DECODER
1468 const FFCodec ff_wmv3image_decoder = {
1469  .p.name = "wmv3image",
1470  CODEC_LONG_NAME("Windows Media Video 9 Image"),
1471  .p.type = AVMEDIA_TYPE_VIDEO,
1472  .p.id = AV_CODEC_ID_WMV3IMAGE,
1473  .priv_data_size = sizeof(VC1Context),
1474  .init = vc1_decode_init,
1475  .close = ff_vc1_decode_end,
1476  FF_CODEC_DECODE_CB(vc1_decode_frame),
1477  .p.capabilities = AV_CODEC_CAP_DR1,
1478  .flush = vc1_sprite_flush,
1479 };
1480 #endif
1481 
1482 #if CONFIG_VC1IMAGE_DECODER
1483 const FFCodec ff_vc1image_decoder = {
1484  .p.name = "vc1image",
1485  CODEC_LONG_NAME("Windows Media Video 9 Image v2"),
1486  .p.type = AVMEDIA_TYPE_VIDEO,
1487  .p.id = AV_CODEC_ID_VC1IMAGE,
1488  .priv_data_size = sizeof(VC1Context),
1489  .init = vc1_decode_init,
1490  .close = ff_vc1_decode_end,
1491  FF_CODEC_DECODE_CB(vc1_decode_frame),
1492  .p.capabilities = AV_CODEC_CAP_DR1,
1493  .flush = vc1_sprite_flush,
1494 };
1495 #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:384
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:1405
VC1Context::zz_8x8
uint8_t zz_8x8[4][64]
Zigzag table for TT_8x8, permuted for IDCT.
Definition: vc1.h:238
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:216
ff_simple_idct44_add
void ff_simple_idct44_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: simple_idct.c:219
VC1Context::new_sprite
int new_sprite
Frame decoding info for sprite modes.
Definition: vc1.h:376
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:100
VC1Context::two_sprites
int two_sprites
Definition: vc1.h:377
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
ff_mpv_decode_init
av_cold int ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
Initialize the given MpegEncContext for decoding.
Definition: mpegvideo_dec.c:47
PROGRESSIVE
@ PROGRESSIVE
in the bitstream is reported as 00b
Definition: vc1.h:149
AVCodecContext::colorspace
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:659
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:1203
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:389
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:396
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
MpegEncContext::block_index
int block_index[6]
index to current MB in block based arrays with edges
Definition: mpegvideo.h:209
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:1398
get_bits_long
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:404
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:249
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:63
VC1Context::sprite_height
int sprite_height
Definition: vc1.h:379
VC1Context::left_blk_sh
int left_blk_sh
Definition: vc1.h:239
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:410
AVCodecContext::color_trc
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:652
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:189
AVPacket::data
uint8_t * data
Definition: packet.h:535
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:389
VC1Context::mv_type_mb_plane
uint8_t * mv_type_mb_plane
bitplane for mv_type == (4MV)
Definition: vc1.h:289
VC1Context::last_interlaced
int last_interlaced
Definition: vc1.h:301
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:82
AVFrame::flags
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:654
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
VC1Context::next_interlaced
int next_interlaced
whether last_pic, next_pic is interlaced
Definition: vc1.h:301
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:379
VC1Context::luma_mv
int16_t((* luma_mv)[2]
Definition: vc1.h:391
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:497
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:1375
VC1Context::rptfrm
uint8_t rptfrm
Definition: vc1.h:316
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:431
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
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:638
ff_vc1_parse_frame_header
int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:616
skip_bits
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:364
ff_permute_scantable
av_cold void ff_permute_scantable(uint8_t dst[64], const uint8_t src[64], const uint8_t permutation[64])
Definition: idctdsp.c:30
close
static av_cold void close(AVCodecParserContext *s)
Definition: apv_parser.c:135
get_bits
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:318
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:164
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:1662
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:622
VC1Context::first_pic_header_flag
int first_pic_header_flag
Definition: vc1.h:366
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:488
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:314
AVCodecContext::coded_height
int coded_height
Definition: avcodec.h:607
VC1Context::n_allocated_blks
int n_allocated_blks
Definition: vc1.h:388
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:51
VC1_IF_MMV_MBMODE_VLC_BITS
#define VC1_IF_MMV_MBMODE_VLC_BITS
Definition: vc1data.h:85
avassert.h
AVCodecContext::color_primaries
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:645
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:210
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:528
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
vc1_decode_reset
static void vc1_decode_reset(AVCodecContext *avctx)
Definition: vc1dec.c:775
VLCInitState
For static VLCs, the number of bits can often be hardcoded at each get_vlc2() callsite.
Definition: vlc.h:220
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:515
AVCodecContext::has_b_frames
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:697
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:896
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:1389
VC1_CODE_SLICE
@ VC1_CODE_SLICE
Definition: vc1_common.h:36
ff_mpeg_flush
av_cold void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo_dec.c:414
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:341
VC1Context::mb_type
uint8_t * mb_type[3]
Definition: vc1.h:266
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:499
vc1_if_mmv_mbmode_codes
static const uint8_t vc1_if_mmv_mbmode_codes[8][8]
Definition: vc1_vlc_data.h:121
MPVWorkPicture::ptr
MPVPicture * ptr
RefStruct reference.
Definition: mpegpicture.h:99
VC1Context::mv_f
uint8_t * mv_f[2]
0: MV obtained from same field, 1: opposite field
Definition: vc1.h:349
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:266
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:324
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:40
ff_simple_idct48_add
void ff_simple_idct48_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: simple_idct.c:204
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:231
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
MpegEncContext::cur_pic
MPVWorkPicture cur_pic
copy of the current picture structure.
Definition: mpegvideo.h:140
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:326
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:441
VC1Context::top_blk_sh
int top_blk_sh
Either 3 or 0, positions of l/t in blk[].
Definition: vc1.h:239
FMT_H263
@ FMT_H263
Definition: mpegvideo.h:56
ff_mpv_common_end
av_cold void ff_mpv_common_end(MpegEncContext *s)
Definition: mpegvideo.c:469
ff_mpv_unref_picture
void ff_mpv_unref_picture(MPVWorkPicture *pic)
Definition: mpegpicture.c:98
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:237
VC1_1REF_MVDATA_VLC_BITS
#define VC1_1REF_MVDATA_VLC_BITS
Definition: vc1data.h:89
AVDISCARD_ALL
@ AVDISCARD_ALL
discard all
Definition: defs.h:229
ff_wmv3_decoder
const FFCodec ff_wmv3_decoder
AV_CODEC_ID_WMV3
@ AV_CODEC_ID_WMV3
Definition: codec_id.h:123
AVPacket::buf
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
Definition: packet.h:518
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:291
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:669
VC1Context::direct_mb_plane
uint8_t * direct_mb_plane
bitplane for "direct" MBs
Definition: vc1.h:290
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
tmp
static uint8_t tmp[20]
Definition: aes_ctr.c:47
ff_vc1_init_transposed_scantables
av_cold void ff_vc1_init_transposed_scantables(VC1Context *v)
Definition: vc1dec.c:484
MpegEncContext::next_pic
MPVWorkPicture next_pic
copy of the next picture structure.
Definition: mpegvideo.h:134
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:351
AVCHROMA_LOC_LEFT
@ AVCHROMA_LOC_LEFT
MPEG-2/4 4:2:0, H.264 default for 4:2:0.
Definition: pixfmt.h:771
ff_vc1_decode_blocks
void ff_vc1_decode_blocks(VC1Context *v)
Definition: vc1_block.c:2946
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:716
ff_mpv_decode_close
av_cold int ff_mpv_decode_close(AVCodecContext *avctx)
Definition: mpegvideo_dec.c:128
VC1Context::mvrange
uint8_t mvrange
Ranges:
Definition: vc1.h:284
VC1_CODE_SEQHDR
@ VC1_CODE_SEQHDR
Definition: vc1_common.h:40
MPVPicture::field_picture
int field_picture
whether or not the picture was encoded in separate fields
Definition: mpegpicture.h:82
VC1Context::block
int16_t(* block)[6][64]
Definition: vc1.h:387
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:278
get_bits1
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:371
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:286
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:391
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:1628
AVCOL_RANGE_UNSPECIFIED
@ AVCOL_RANGE_UNSPECIFIED
Definition: pixfmt.h:716
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:345
ff_vc1_init_common
av_cold void ff_vc1_init_common(VC1Context *v)
Init VC-1 specific tables and VC1Context members.
Definition: vc1dec.c:594
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:228
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:350
f
f
Definition: af_crystalizer.c:122
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:502
ff_get_buffer
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1611
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts.c:368
VC1_TTBLK_VLC_BITS
#define VC1_TTBLK_VLC_BITS
Definition: vc1data.h:77
VC1Context::is_intra
uint8_t * is_intra
Definition: vc1.h:390
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:302
AVPacket::size
int size
Definition: packet.h:536
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:276
codec_internal.h
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition: dsp.h:87
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:261
VC1Context::mb_off
int mb_off
Definition: vc1.h:363
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:347
VLCElem
Definition: vlc.h:32
ff_intrax8_common_init
av_cold int ff_intrax8_common_init(AVCodecContext *avctx, IntraX8Context *w, int16_t(*block)[64], int mb_width, int mb_height)
Initialize IntraX8 frame decoder.
Definition: intrax8.c:679
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:379
ff_vc1_ac_coeff_table
const VLCElem * ff_vc1_ac_coeff_table[8]
Definition: vc1data.c:124
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:309
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:380
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:221
AV_CODEC_ID_MSS2
@ AV_CODEC_ID_MSS2
Definition: codec_id.h:221
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_print_debug_info
void ff_print_debug_info(const MpegEncContext *s, const MPVPicture *p, AVFrame *pict)
Definition: mpegvideo_dec.c:368
vc1_get_format
static enum AVPixelFormat vc1_get_format(AVCodecContext *avctx)
Definition: vc1dec.c:433
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
Out-of-band global headers that may be used by some codecs.
Definition: avcodec.h:514
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:493
ff_vc1_parse_frame_header_adv
int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:836
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:498
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:367
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:179
VC1Context::ttblk
int * ttblk
Transform type at the block level.
Definition: vc1.h:261
MpegEncContext::last_pic
MPVWorkPicture last_pic
copy of the previous picture structure.
Definition: mpegvideo.h:128
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:592
VC1Context::is_intra_base
uint8_t * is_intra_base
Definition: vc1.h:390
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:631
AV_FRAME_FLAG_INTERLACED
#define AV_FRAME_FLAG_INTERLACED
A flag to mark frames whose content is interlaced.
Definition: frame.h:633
AVCOL_RANGE_MPEG
@ AVCOL_RANGE_MPEG
Narrow or limited range content.
Definition: pixfmt.h:733
avcodec.h
VC1Context::second_field
int second_field
Definition: vc1.h:353
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:378
VC1Context::output_width
int output_width
Definition: vc1.h:379
state
static struct @499 state
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:350
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
MPVPicture::f
struct AVFrame * f
Definition: mpegpicture.h:59
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:431
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:383
AV_PICTURE_TYPE_B
@ AV_PICTURE_TYPE_B
Bi-dir predicted.
Definition: avutil.h:280
vc1_4mv_block_pattern_codes
static const uint8_t vc1_4mv_block_pattern_codes[4][16]
Definition: vc1_vlc_data.h:67
VC1Context::tff
uint8_t tff
Definition: vc1.h:316
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:278
AVCodecContext::profile
int profile
profile
Definition: avcodec.h:1618
ffhwaccel
static const FFHWAccel * ffhwaccel(const AVHWAccel *codec)
Definition: hwaccel_internal.h:168
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:360
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:147
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:1374
av_clip_uint16
#define av_clip_uint16
Definition: common.h:112
VC1Context::bi_type
int bi_type
Definition: vc1.h:384
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:607
VC1Context::fcm
enum FrameCodingMode fcm
Frame decoding info for Advanced profile.
Definition: vc1.h:313
AV_PICTURE_TYPE_P
@ AV_PICTURE_TYPE_P
Predicted.
Definition: avutil.h:279
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:200
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:254
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:769
msmpeg4_vc1_data.h
vc1_vlc_data.h
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:37
MPVWorkPicture
Definition: mpegpicture.h:95
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:34
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
VLC_INIT_STATE
#define VLC_INIT_STATE(_table)
Definition: vlc.h:225
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:512
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:458
VC1Context::acpred_plane
uint8_t * acpred_plane
AC prediction flags bitplane.
Definition: vc1.h:322
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
AV_PICTURE_TYPE_BI
@ AV_PICTURE_TYPE_BI
BI type.
Definition: avutil.h:284
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:592
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:455
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 MSS2/VC1/WMV3 decoder.
Definition: vc1dec.c:807
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:816
VC1Context::blk_mv_type
uint8_t * blk_mv_type
0: frame MV, 1: field MV (interlaced frame)
Definition: vc1.h:348
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
width
#define width
Definition: dsp.h:89
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:225
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:64
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:316
ff_vc1_decode_init
av_cold int ff_vc1_decode_init(AVCodecContext *avctx)
Definition: vc1dec.c:453
vc1_mv_diff_bits
static const uint8_t vc1_mv_diff_bits[4][73]
Definition: vc1_vlc_data.h:806
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