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ffv1dec.c
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1 /*
2  * FFV1 decoder
3  *
4  * Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * FF Video Codec 1 (a lossless codec) decoder
26  */
27 
28 #include "libavutil/avassert.h"
29 #include "libavutil/crc.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/imgutils.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/timer.h"
34 #include "avcodec.h"
35 #include "internal.h"
36 #include "get_bits.h"
37 #include "rangecoder.h"
38 #include "golomb.h"
39 #include "mathops.h"
40 #include "ffv1.h"
41 
43  int is_signed)
44 {
45  if (get_rac(c, state + 0))
46  return 0;
47  else {
48  int i, e, a;
49  e = 0;
50  while (get_rac(c, state + 1 + FFMIN(e, 9))) { // 1..10
51  e++;
52  if (e > 31)
53  return AVERROR_INVALIDDATA;
54  }
55 
56  a = 1;
57  for (i = e - 1; i >= 0; i--)
58  a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
59 
60  e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
61  return (a ^ e) - e;
62  }
63 }
64 
65 static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
66 {
67  return get_symbol_inline(c, state, is_signed);
68 }
69 
70 static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
71  int bits)
72 {
73  int k, i, v, ret;
74 
75  i = state->count;
76  k = 0;
77  while (i < state->error_sum) { // FIXME: optimize
78  k++;
79  i += i;
80  }
81 
82  v = get_sr_golomb(gb, k, 12, bits);
83  ff_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
84  v, state->bias, state->error_sum, state->drift, state->count, k);
85 
86 #if 0 // JPEG LS
87  if (k == 0 && 2 * state->drift <= -state->count)
88  v ^= (-1);
89 #else
90  v ^= ((2 * state->drift + state->count) >> 31);
91 #endif
92 
93  ret = fold(v + state->bias, bits);
94 
95  update_vlc_state(state, v);
96 
97  return ret;
98 }
99 
100 #define TYPE int16_t
101 #define RENAME(name) name
102 #include "ffv1dec_template.c"
103 #undef TYPE
104 #undef RENAME
105 
106 #define TYPE int32_t
107 #define RENAME(name) name ## 32
108 #include "ffv1dec_template.c"
109 
111  int w, int h, int stride, int plane_index,
112  int pixel_stride)
113 {
114  int x, y;
115  int16_t *sample[2];
116  sample[0] = s->sample_buffer + 3;
117  sample[1] = s->sample_buffer + w + 6 + 3;
118 
119  s->run_index = 0;
120 
121  memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
122 
123  for (y = 0; y < h; y++) {
124  int16_t *temp = sample[0]; // FIXME: try a normal buffer
125 
126  sample[0] = sample[1];
127  sample[1] = temp;
128 
129  sample[1][-1] = sample[0][0];
130  sample[0][w] = sample[0][w - 1];
131 
132 // { START_TIMER
133  if (s->avctx->bits_per_raw_sample <= 8) {
134  decode_line(s, w, sample, plane_index, 8);
135  for (x = 0; x < w; x++)
136  src[x*pixel_stride + stride * y] = sample[1][x];
137  } else {
138  decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
139  if (s->packed_at_lsb) {
140  for (x = 0; x < w; x++) {
141  ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x];
142  }
143  } else {
144  for (x = 0; x < w; x++) {
145  ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample);
146  }
147  }
148  }
149 // STOP_TIMER("decode-line") }
150  }
151 }
152 
154 {
155  RangeCoder *c = &fs->c;
157  unsigned ps, i, context_count;
158  memset(state, 128, sizeof(state));
159 
160  av_assert0(f->version > 2);
161 
162  fs->slice_x = get_symbol(c, state, 0) * f->width ;
163  fs->slice_y = get_symbol(c, state, 0) * f->height;
164  fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
165  fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
166 
167  fs->slice_x /= f->num_h_slices;
168  fs->slice_y /= f->num_v_slices;
169  fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
170  fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
171  if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
172  return -1;
173  if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
174  || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
175  return -1;
176 
177  for (i = 0; i < f->plane_count; i++) {
178  PlaneContext * const p = &fs->plane[i];
179  int idx = get_symbol(c, state, 0);
180  if (idx >= (unsigned)f->quant_table_count) {
181  av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
182  return -1;
183  }
184  p->quant_table_index = idx;
185  memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
186  context_count = f->context_count[idx];
187 
188  if (p->context_count < context_count) {
189  av_freep(&p->state);
190  av_freep(&p->vlc_state);
191  }
193  }
194 
195  ps = get_symbol(c, state, 0);
196  if (ps == 1) {
197  f->cur->interlaced_frame = 1;
198  f->cur->top_field_first = 1;
199  } else if (ps == 2) {
200  f->cur->interlaced_frame = 1;
201  f->cur->top_field_first = 0;
202  } else if (ps == 3) {
203  f->cur->interlaced_frame = 0;
204  }
205  f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
206  f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
207 
208  if (av_image_check_sar(f->width, f->height,
209  f->cur->sample_aspect_ratio) < 0) {
210  av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
213  f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
214  }
215 
216  if (fs->version > 3) {
217  fs->slice_reset_contexts = get_rac(c, state);
218  fs->slice_coding_mode = get_symbol(c, state, 0);
219  if (fs->slice_coding_mode != 1) {
220  fs->slice_rct_by_coef = get_symbol(c, state, 0);
221  fs->slice_rct_ry_coef = get_symbol(c, state, 0);
222  if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
223  av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
224  return AVERROR_INVALIDDATA;
225  }
226  }
227  }
228 
229  return 0;
230 }
231 
232 static int decode_slice(AVCodecContext *c, void *arg)
233 {
234  FFV1Context *fs = *(void **)arg;
235  FFV1Context *f = fs->avctx->priv_data;
236  int width, height, x, y, ret;
237  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
238  AVFrame * const p = f->cur;
239  int i, si;
240 
241  for( si=0; fs != f->slice_context[si]; si ++)
242  ;
243 
244  if(f->fsrc && !p->key_frame)
246 
247  if(f->fsrc && !p->key_frame) {
248  FFV1Context *fssrc = f->fsrc->slice_context[si];
249  FFV1Context *fsdst = f->slice_context[si];
250  av_assert1(fsdst->plane_count == fssrc->plane_count);
251  av_assert1(fsdst == fs);
252 
253  if (!p->key_frame)
254  fsdst->slice_damaged |= fssrc->slice_damaged;
255 
256  for (i = 0; i < f->plane_count; i++) {
257  PlaneContext *psrc = &fssrc->plane[i];
258  PlaneContext *pdst = &fsdst->plane[i];
259 
260  av_free(pdst->state);
261  av_free(pdst->vlc_state);
262  memcpy(pdst, psrc, sizeof(*pdst));
263  pdst->state = NULL;
264  pdst->vlc_state = NULL;
265 
266  if (fssrc->ac) {
268  memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
269  } else {
270  pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
271  memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
272  }
273  }
274  }
275 
276  fs->slice_rct_by_coef = 1;
277  fs->slice_rct_ry_coef = 1;
278 
279  if (f->version > 2) {
280  if (ff_ffv1_init_slice_state(f, fs) < 0)
281  return AVERROR(ENOMEM);
282  if (decode_slice_header(f, fs) < 0) {
283  fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0;
284  fs->slice_damaged = 1;
285  return AVERROR_INVALIDDATA;
286  }
287  }
288  if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
289  return ret;
290  if (f->cur->key_frame || fs->slice_reset_contexts)
292 
293  width = fs->slice_width;
294  height = fs->slice_height;
295  x = fs->slice_x;
296  y = fs->slice_y;
297 
298  if (fs->ac == AC_GOLOMB_RICE) {
299  if (f->version == 3 && f->micro_version > 1 || f->version > 3)
300  get_rac(&fs->c, (uint8_t[]) { 129 });
301  fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
302  init_get_bits(&fs->gb,
303  fs->c.bytestream_start + fs->ac_byte_count,
304  (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
305  }
306 
307  av_assert1(width && height);
308  if (f->colorspace == 0 && (f->chroma_planes || !fs->transparency)) {
309  const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
310  const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
311  const int cx = x >> f->chroma_h_shift;
312  const int cy = y >> f->chroma_v_shift;
313  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
314 
315  if (f->chroma_planes) {
316  decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
317  decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
318  }
319  if (fs->transparency)
320  decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], (f->version >= 4 && !f->chroma_planes) ? 1 : 2, 1);
321  } else if (f->colorspace == 0) {
322  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2);
323  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2);
324  } else if (f->use32bit) {
325  uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
326  p->data[1] + ps * x + y * p->linesize[1],
327  p->data[2] + ps * x + y * p->linesize[2] };
328  decode_rgb_frame32(fs, planes, width, height, p->linesize);
329  } else {
330  uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
331  p->data[1] + ps * x + y * p->linesize[1],
332  p->data[2] + ps * x + y * p->linesize[2] };
333  decode_rgb_frame(fs, planes, width, height, p->linesize);
334  }
335  if (fs->ac != AC_GOLOMB_RICE && f->version > 2) {
336  int v;
337  get_rac(&fs->c, (uint8_t[]) { 129 });
338  v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
339  if (v) {
340  av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
341  fs->slice_damaged = 1;
342  }
343  }
344 
345  emms_c();
346 
347  ff_thread_report_progress(&f->picture, si, 0);
348 
349  return 0;
350 }
351 
352 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
353 {
354  int v;
355  int i = 0;
357 
358  memset(state, 128, sizeof(state));
359 
360  for (v = 0; i < 128; v++) {
361  unsigned len = get_symbol(c, state, 0) + 1;
362 
363  if (len > 128 - i || !len)
364  return AVERROR_INVALIDDATA;
365 
366  while (len--) {
367  quant_table[i] = scale * v;
368  i++;
369  }
370  }
371 
372  for (i = 1; i < 128; i++)
373  quant_table[256 - i] = -quant_table[i];
374  quant_table[128] = -quant_table[127];
375 
376  return 2 * v - 1;
377 }
378 
380  int16_t quant_table[MAX_CONTEXT_INPUTS][256])
381 {
382  int i;
383  int context_count = 1;
384 
385  for (i = 0; i < 5; i++) {
386  int ret = read_quant_table(c, quant_table[i], context_count);
387  if (ret < 0)
388  return ret;
389  context_count *= ret;
390  if (context_count > 32768U) {
391  return AVERROR_INVALIDDATA;
392  }
393  }
394  return (context_count + 1) / 2;
395 }
396 
398 {
399  RangeCoder *const c = &f->c;
401  int i, j, k, ret;
402  uint8_t state2[32][CONTEXT_SIZE];
403  unsigned crc = 0;
404 
405  memset(state2, 128, sizeof(state2));
406  memset(state, 128, sizeof(state));
407 
409  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
410 
411  f->version = get_symbol(c, state, 0);
412  if (f->version < 2) {
413  av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
414  return AVERROR_INVALIDDATA;
415  }
416  if (f->version > 2) {
417  c->bytestream_end -= 4;
418  f->micro_version = get_symbol(c, state, 0);
419  if (f->micro_version < 0)
420  return AVERROR_INVALIDDATA;
421  }
422  f->ac = get_symbol(c, state, 0);
423 
424  if (f->ac == AC_RANGE_CUSTOM_TAB) {
425  for (i = 1; i < 256; i++)
426  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
427  }
428 
429  f->colorspace = get_symbol(c, state, 0); //YUV cs type
430  f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
431  f->chroma_planes = get_rac(c, state);
432  f->chroma_h_shift = get_symbol(c, state, 0);
433  f->chroma_v_shift = get_symbol(c, state, 0);
434  f->transparency = get_rac(c, state);
435  f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
436  f->num_h_slices = 1 + get_symbol(c, state, 0);
437  f->num_v_slices = 1 + get_symbol(c, state, 0);
438 
439  if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
440  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
442  return AVERROR_INVALIDDATA;
443  }
444 
445  if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
446  f->num_v_slices > (unsigned)f->height || !f->num_v_slices
447  ) {
448  av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
449  return AVERROR_INVALIDDATA;
450  }
451 
452  f->quant_table_count = get_symbol(c, state, 0);
453  if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
454  av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
455  f->quant_table_count = 0;
456  return AVERROR_INVALIDDATA;
457  }
458 
459  for (i = 0; i < f->quant_table_count; i++) {
460  f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
461  if (f->context_count[i] < 0) {
462  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
463  return AVERROR_INVALIDDATA;
464  }
465  }
466  if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
467  return ret;
468 
469  for (i = 0; i < f->quant_table_count; i++)
470  if (get_rac(c, state)) {
471  for (j = 0; j < f->context_count[i]; j++)
472  for (k = 0; k < CONTEXT_SIZE; k++) {
473  int pred = j ? f->initial_states[i][j - 1][k] : 128;
474  f->initial_states[i][j][k] =
475  (pred + get_symbol(c, state2[k], 1)) & 0xFF;
476  }
477  }
478 
479  if (f->version > 2) {
480  f->ec = get_symbol(c, state, 0);
481  if (f->micro_version > 2)
482  f->intra = get_symbol(c, state, 0);
483  }
484 
485  if (f->version > 2) {
486  unsigned v;
489  if (v || f->avctx->extradata_size < 4) {
490  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
491  return AVERROR_INVALIDDATA;
492  }
493  crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
494  }
495 
496  if (f->avctx->debug & FF_DEBUG_PICT_INFO)
498  "global: ver:%d.%d, coder:%d, colorspace: %d bpr:%d chroma:%d(%d:%d), alpha:%d slices:%dx%d qtabs:%d ec:%d intra:%d CRC:0x%08X\n",
499  f->version, f->micro_version,
500  f->ac,
501  f->colorspace,
504  f->transparency,
505  f->num_h_slices, f->num_v_slices,
507  f->ec,
508  f->intra,
509  crc
510  );
511  return 0;
512 }
513 
514 static int read_header(FFV1Context *f)
515 {
517  int i, j, context_count = -1; //-1 to avoid warning
518  RangeCoder *const c = &f->slice_context[0]->c;
519 
520  memset(state, 128, sizeof(state));
521 
522  if (f->version < 2) {
524  unsigned v= get_symbol(c, state, 0);
525  if (v >= 2) {
526  av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
527  return AVERROR_INVALIDDATA;
528  }
529  f->version = v;
530  f->ac = get_symbol(c, state, 0);
531 
532  if (f->ac == AC_RANGE_CUSTOM_TAB) {
533  for (i = 1; i < 256; i++)
534  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
535  }
536 
537  colorspace = get_symbol(c, state, 0); //YUV cs type
538  bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
539  chroma_planes = get_rac(c, state);
540  chroma_h_shift = get_symbol(c, state, 0);
541  chroma_v_shift = get_symbol(c, state, 0);
542  transparency = get_rac(c, state);
543  if (colorspace == 0 && f->avctx->skip_alpha)
544  transparency = 0;
545 
546  if (f->plane_count) {
547  if (colorspace != f->colorspace ||
548  bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
549  chroma_planes != f->chroma_planes ||
550  chroma_h_shift != f->chroma_h_shift ||
551  chroma_v_shift != f->chroma_v_shift ||
552  transparency != f->transparency) {
553  av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
554  return AVERROR_INVALIDDATA;
555  }
556  }
557 
558  if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
559  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
560  chroma_h_shift, chroma_v_shift);
561  return AVERROR_INVALIDDATA;
562  }
563 
564  f->colorspace = colorspace;
570 
571  f->plane_count = 2 + f->transparency;
572  }
573 
574  if (f->colorspace == 0) {
575  if (!f->transparency && !f->chroma_planes) {
576  if (f->avctx->bits_per_raw_sample <= 8)
578  else
580  } else if (f->transparency && !f->chroma_planes) {
581  if (f->avctx->bits_per_raw_sample <= 8)
583  else
584  return AVERROR(ENOSYS);
585  } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
586  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
587  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
588  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
589  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
590  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
591  case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
592  case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
593  }
594  } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
595  switch(16*f->chroma_h_shift + f->chroma_v_shift) {
596  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
597  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
598  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
599  }
600  } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
601  f->packed_at_lsb = 1;
602  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
603  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
604  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
605  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
606  }
607  } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
608  f->packed_at_lsb = 1;
609  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
610  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
611  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
612  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
613  }
614  } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
615  f->packed_at_lsb = 1;
616  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
617  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
618  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
619  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
620  }
621  } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
622  f->packed_at_lsb = 1;
623  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
624  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
625  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
626  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
627  }
628  } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
629  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
630  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
631  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
632  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
633  }
634  } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
635  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
636  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
637  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
638  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
639  }
640  }
641  } else if (f->colorspace == 1) {
642  if (f->chroma_h_shift || f->chroma_v_shift) {
644  "chroma subsampling not supported in this colorspace\n");
645  return AVERROR(ENOSYS);
646  }
647  if ( f->avctx->bits_per_raw_sample <= 8 && !f->transparency)
649  else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency)
651  else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency)
653  else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency)
655  else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency)
657  else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency)
659  else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency) {
661  f->use32bit = 1;
662  }
663  } else {
664  av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
665  return AVERROR(ENOSYS);
666  }
667  if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
668  av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
669  return AVERROR(ENOSYS);
670  }
671 
672  ff_dlog(f->avctx, "%d %d %d\n",
674  if (f->version < 2) {
675  context_count = read_quant_tables(c, f->quant_table);
676  if (context_count < 0) {
677  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
678  return AVERROR_INVALIDDATA;
679  }
681  } else if (f->version < 3) {
682  f->slice_count = get_symbol(c, state, 0);
683  } else {
684  const uint8_t *p = c->bytestream_end;
685  for (f->slice_count = 0;
686  f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start;
687  f->slice_count++) {
688  int trailer = 3 + 5*!!f->ec;
689  int size = AV_RB24(p-trailer);
690  if (size + trailer > p - c->bytestream_start)
691  break;
692  p -= size + trailer;
693  }
694  }
695  if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) {
696  av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count);
697  return AVERROR_INVALIDDATA;
698  }
699 
700  for (j = 0; j < f->slice_count; j++) {
701  FFV1Context *fs = f->slice_context[j];
702  fs->ac = f->ac;
703  fs->packed_at_lsb = f->packed_at_lsb;
704 
705  fs->slice_damaged = 0;
706 
707  if (f->version == 2) {
708  fs->slice_x = get_symbol(c, state, 0) * f->width ;
709  fs->slice_y = get_symbol(c, state, 0) * f->height;
710  fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
711  fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
712 
713  fs->slice_x /= f->num_h_slices;
714  fs->slice_y /= f->num_v_slices;
715  fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
716  fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
717  if ((unsigned)fs->slice_width > f->width ||
718  (unsigned)fs->slice_height > f->height)
719  return AVERROR_INVALIDDATA;
720  if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
721  || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
722  return AVERROR_INVALIDDATA;
723  }
724 
725  for (i = 0; i < f->plane_count; i++) {
726  PlaneContext *const p = &fs->plane[i];
727 
728  if (f->version == 2) {
729  int idx = get_symbol(c, state, 0);
730  if (idx > (unsigned)f->quant_table_count) {
732  "quant_table_index out of range\n");
733  return AVERROR_INVALIDDATA;
734  }
735  p->quant_table_index = idx;
736  memcpy(p->quant_table, f->quant_tables[idx],
737  sizeof(p->quant_table));
738  context_count = f->context_count[idx];
739  } else {
740  memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
741  }
742 
743  if (f->version <= 2) {
744  av_assert0(context_count >= 0);
745  if (p->context_count < context_count) {
746  av_freep(&p->state);
747  av_freep(&p->vlc_state);
748  }
750  }
751  }
752  }
753  return 0;
754 }
755 
757 {
758  FFV1Context *f = avctx->priv_data;
759  int ret;
760 
761  if ((ret = ff_ffv1_common_init(avctx)) < 0)
762  return ret;
763 
764  if (avctx->extradata_size > 0 && (ret = read_extra_header(f)) < 0)
765  return ret;
766 
767  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
768  return ret;
769 
770  avctx->internal->allocate_progress = 1;
771 
772  return 0;
773 }
774 
775 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
776 {
777  uint8_t *buf = avpkt->data;
778  int buf_size = avpkt->size;
779  FFV1Context *f = avctx->priv_data;
780  RangeCoder *const c = &f->slice_context[0]->c;
781  int i, ret;
782  uint8_t keystate = 128;
783  uint8_t *buf_p;
784  AVFrame *p;
785 
786  if (f->last_picture.f)
789 
790  f->cur = p = f->picture.f;
791 
792  if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
793  /* we have interlaced material flagged in container */
794  p->interlaced_frame = 1;
795  if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
796  p->top_field_first = 1;
797  }
798 
799  f->avctx = avctx;
800  ff_init_range_decoder(c, buf, buf_size);
801  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
802 
803  p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
804  if (get_rac(c, &keystate)) {
805  p->key_frame = 1;
806  f->key_frame_ok = 0;
807  if ((ret = read_header(f)) < 0)
808  return ret;
809  f->key_frame_ok = 1;
810  } else {
811  if (!f->key_frame_ok) {
812  av_log(avctx, AV_LOG_ERROR,
813  "Cannot decode non-keyframe without valid keyframe\n");
814  return AVERROR_INVALIDDATA;
815  }
816  p->key_frame = 0;
817  }
818 
819  if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
820  return ret;
821 
822  if (avctx->debug & FF_DEBUG_PICT_INFO)
823  av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
824  f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
825 
826  ff_thread_finish_setup(avctx);
827 
828  buf_p = buf + buf_size;
829  for (i = f->slice_count - 1; i >= 0; i--) {
830  FFV1Context *fs = f->slice_context[i];
831  int trailer = 3 + 5*!!f->ec;
832  int v;
833 
834  if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
835  else v = buf_p - c->bytestream_start;
836  if (buf_p - c->bytestream_start < v) {
837  av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
838  ff_thread_report_progress(&f->picture, INT_MAX, 0);
839  return AVERROR_INVALIDDATA;
840  }
841  buf_p -= v;
842 
843  if (f->ec) {
844  unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
845  if (crc) {
846  int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
847  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
848  if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
849  av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
850  } else if (ts != AV_NOPTS_VALUE) {
851  av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
852  } else {
853  av_log(f->avctx, AV_LOG_ERROR, "\n");
854  }
855  fs->slice_damaged = 1;
856  }
857  if (avctx->debug & FF_DEBUG_PICT_INFO) {
858  av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08X\n", i, AV_RB32(buf_p + v - 4));
859  }
860  }
861 
862  if (i) {
863  ff_init_range_decoder(&fs->c, buf_p, v);
864  } else
865  fs->c.bytestream_end = buf_p + v;
866 
867  fs->avctx = avctx;
868  fs->cur = p;
869  }
870 
871  avctx->execute(avctx,
872  decode_slice,
873  &f->slice_context[0],
874  NULL,
875  f->slice_count,
876  sizeof(void*));
877 
878  for (i = f->slice_count - 1; i >= 0; i--) {
879  FFV1Context *fs = f->slice_context[i];
880  int j;
881  if (fs->slice_damaged && f->last_picture.f->data[0]) {
883  const uint8_t *src[4];
884  uint8_t *dst[4];
885  ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
886  for (j = 0; j < 4; j++) {
887  int pixshift = desc->comp[j].depth > 8;
888  int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
889  int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
890  dst[j] = p->data[j] + p->linesize[j] *
891  (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
892  src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
893  (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
894  }
895  av_image_copy(dst, p->linesize, src,
896  f->last_picture.f->linesize,
897  avctx->pix_fmt,
898  fs->slice_width,
899  fs->slice_height);
900  }
901  }
902  ff_thread_report_progress(&f->picture, INT_MAX, 0);
903 
904  f->picture_number++;
905 
906  if (f->last_picture.f)
908  f->cur = NULL;
909  if ((ret = av_frame_ref(data, f->picture.f)) < 0)
910  return ret;
911 
912  *got_frame = 1;
913 
914  return buf_size;
915 }
916 
917 #if HAVE_THREADS
919 {
920  FFV1Context *f = avctx->priv_data;
921  int i, ret;
922 
923  f->picture.f = NULL;
924  f->last_picture.f = NULL;
925  f->sample_buffer = NULL;
926  f->max_slice_count = 0;
927  f->slice_count = 0;
928 
929  for (i = 0; i < f->quant_table_count; i++) {
930  av_assert0(f->version > 1);
932  f->context_count[i] * sizeof(*f->initial_states[i]));
933  }
934 
935  f->picture.f = av_frame_alloc();
937 
938  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
939  return ret;
940 
941  return 0;
942 }
943 #endif
944 
945 static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
946 {
947  fsdst->version = fsrc->version;
948  fsdst->micro_version = fsrc->micro_version;
949  fsdst->chroma_planes = fsrc->chroma_planes;
950  fsdst->chroma_h_shift = fsrc->chroma_h_shift;
951  fsdst->chroma_v_shift = fsrc->chroma_v_shift;
952  fsdst->transparency = fsrc->transparency;
953  fsdst->plane_count = fsrc->plane_count;
954  fsdst->ac = fsrc->ac;
955  fsdst->colorspace = fsrc->colorspace;
956 
957  fsdst->ec = fsrc->ec;
958  fsdst->intra = fsrc->intra;
959  fsdst->slice_damaged = fssrc->slice_damaged;
960  fsdst->key_frame_ok = fsrc->key_frame_ok;
961 
963  fsdst->packed_at_lsb = fsrc->packed_at_lsb;
964  fsdst->slice_count = fsrc->slice_count;
965  if (fsrc->version<3){
966  fsdst->slice_x = fssrc->slice_x;
967  fsdst->slice_y = fssrc->slice_y;
968  fsdst->slice_width = fssrc->slice_width;
969  fsdst->slice_height = fssrc->slice_height;
970  }
971 }
972 
973 #if HAVE_THREADS
974 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
975 {
976  FFV1Context *fsrc = src->priv_data;
977  FFV1Context *fdst = dst->priv_data;
978  int i, ret;
979 
980  if (dst == src)
981  return 0;
982 
983  {
987  memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
988  memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
989 
990  memcpy(fdst, fsrc, sizeof(*fdst));
991  memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
992  memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
993  fdst->picture = picture;
994  fdst->last_picture = last_picture;
995  for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
996  FFV1Context *fssrc = fsrc->slice_context[i];
997  FFV1Context *fsdst = fdst->slice_context[i];
998  copy_fields(fsdst, fssrc, fsrc);
999  }
1000  av_assert0(!fdst->plane[0].state);
1001  av_assert0(!fdst->sample_buffer);
1002  }
1003 
1004  av_assert1(fdst->max_slice_count == fsrc->max_slice_count);
1005 
1006 
1007  ff_thread_release_buffer(dst, &fdst->picture);
1008  if (fsrc->picture.f->data[0]) {
1009  if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1010  return ret;
1011  }
1012 
1013  fdst->fsrc = fsrc;
1014 
1015  return 0;
1016 }
1017 #endif
1018 
1020  .name = "ffv1",
1021  .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1022  .type = AVMEDIA_TYPE_VIDEO,
1023  .id = AV_CODEC_ID_FFV1,
1024  .priv_data_size = sizeof(FFV1Context),
1025  .init = decode_init,
1026  .close = ff_ffv1_close,
1027  .decode = decode_frame,
1029  .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1030  .capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/ |
1032  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP
1033 };
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:48
static av_always_inline int fold(int diff, int bits)
Definition: ffv1.h:151
#define NULL
Definition: coverity.c:32
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:380
const char * s
Definition: avisynth_c.h:768
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:374
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2263
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:376
8 bits gray, 8 bits alpha
Definition: pixfmt.h:154
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:377
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
static int init_thread_copy(AVCodecContext *avctx)
Definition: tta.c:392
AVFrame * f
Definition: thread.h:36
int16_t quant_table[MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:69
int quant_table_count
Definition: ffv1.h:126
else temp
Definition: vf_mcdeint.c:259
const char * desc
Definition: nvenc.c:89
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static int decode_slice(AVCodecContext *c, void *arg)
Definition: ffv1dec.c:232
int slice_height
Definition: ffv1.h:134
#define MAX_CONTEXT_INPUTS
Definition: ffv1.h:54
int16_t * sample_buffer
Definition: ffv1.h:111
int version
Definition: ffv1.h:87
int micro_version
Definition: ffv1.h:88
Range coder.
uint8_t * bytestream_end
Definition: rangecoder.h:44
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1591
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:359
static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
Definition: ffv1dec.c:352
static av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state, int is_signed)
Definition: ffv1dec.c:42
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1887
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ffv1dec.c:775
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3060
FF Video Codec 1 (a lossless codec)
void ff_thread_await_progress(ThreadFrame *f, int n, int field)
Wait for earlier decoding threads to finish reference pictures.
#define sample
int height
Definition: ffv1.h:89
AVCodec.
Definition: avcodec.h:3573
uint8_t one_state[256]
Definition: rangecoder.h:41
int slice_reset_contexts
Definition: ffv1.h:137
enum AVPictureType last_picture
Definition: movenc.c:68
int slice_rct_by_coef
Definition: ffv1.h:139
int plane_count
Definition: ffv1.h:100
int slice_damaged
Definition: ffv1.h:118
ThreadFrame picture
Definition: ffv1.h:96
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
static int read_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256])
Definition: ffv1dec.c:379
uint8_t bits
Definition: crc.c:296
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:82
static int get_rac(RangeCoder *c, uint8_t *const state)
Definition: rangecoder.h:115
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:140
AVOptions.
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:2900
int8_t bias
Definition: ffv1.h:64
RangeCoder c
Definition: ffv1.h:82
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
Definition: frame.c:374
av_cold int ff_ffv1_common_init(AVCodecContext *avctx)
Definition: ffv1.c:42
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1774
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:373
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:358
int slice_y
Definition: ffv1.h:136
uint8_t(*[MAX_QUANT_TABLES] initial_states)[32]
Definition: ffv1.h:108
ThreadFrame last_picture
Definition: ffv1.h:96
Public header for CRC hash function implementation.
av_cold int ff_ffv1_close(AVCodecContext *avctx)
Definition: ffv1.c:210
int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar)
Check if the given sample aspect ratio of an image is valid.
Definition: imgutils.c:266
#define height
uint8_t * data
Definition: avcodec.h:1590
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
uint8_t count
Definition: ffv1.h:65
int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
Definition: utils.c:3847
#define ff_dlog(a,...)
bitstream reader API header.
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:356
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:318
VlcState * vlc_state
Definition: ffv1.h:73
ptrdiff_t size
Definition: opengl_enc.c:101
void ff_thread_finish_setup(AVCodecContext *avctx)
If the codec defines update_thread_context(), call this when they are ready for the next thread to st...
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:379
high precision timer, useful to profile code
#define av_log(a,...)
int bits_per_raw_sample
Definition: ffv1.h:122
int slice_width
Definition: ffv1.h:133
GetBitContext gb
Definition: ffv1.h:83
#define U(x)
Definition: vp56_arith.h:37
AVFrame * cur
Definition: ffv1.h:99
AVRational pkt_timebase
Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
Definition: avcodec.h:3374
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:187
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
static int decode_slice_header(FFV1Context *f, FFV1Context *fs)
Definition: ffv1dec.c:153
void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
Wrapper around release_buffer() frame-for multithreaded codecs.
int16_t quant_tables[MAX_QUANT_TABLES][MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:105
#define AVERROR(e)
Definition: error.h:43
int skip_alpha
Skip processing alpha if supported by codec.
Definition: avcodec.h:3437
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
int context_count
Definition: ffv1.h:71
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:381
const char * arg
Definition: jacosubdec.c:66
simple assert() macros that are a bit more flexible than ISO C assert().
const char * name
Name of the codec implementation.
Definition: avcodec.h:3580
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:346
int ff_ffv1_allocate_initial_states(FFV1Context *f)
Definition: ffv1.c:167
#define MAX_SLICES
Definition: dxva2_hevc.c:32
void * av_memdup(const void *p, size_t size)
Duplicate a buffer with av_malloc().
Definition: mem.c:299
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1021
void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], const uint8_t *src_data[4], const int src_linesizes[4], enum AVPixelFormat pix_fmt, int width, int height)
Copy image in src_data to dst_data.
Definition: imgutils.c:302
static int get_vlc_symbol(GetBitContext *gb, VlcState *const state, int bits)
Definition: ffv1dec.c:70
uint8_t * bytestream
Definition: rangecoder.h:43
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
#define ONLY_IF_THREADS_ENABLED(x)
Define a function with only the non-default version specified.
Definition: internal.h:215
int ac
1=range coder <-> 0=golomb rice
Definition: ffv1.h:101
int16_t quant_table[MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:104
#define AC_RANGE_CUSTOM_TAB
Definition: ffv1.h:58
int run_index
Definition: ffv1.h:109
Definition: ffv1.h:61
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:341
#define av_flatten
Definition: attributes.h:88
static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
Definition: ffv1dec.c:65
uint8_t state_transition[256]
Definition: ffv1.h:107
static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
Definition: ffv1dec.c:945
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:258
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:362
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:327
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
#define FFMIN(a, b)
Definition: common.h:96
int num_h_slices
Definition: ffv1.h:132
#define width
#define MAX_QUANT_TABLES
Definition: ffv1.h:53
int colorspace
Definition: ffv1.h:110
static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index, int pixel_stride)
Definition: ffv1dec.c:110
static float quant_table[96]
Definition: binkaudio.c:42
void ff_thread_report_progress(ThreadFrame *f, int n, int field)
Notify later decoding threads when part of their reference picture is ready.
static void update_vlc_state(VlcState *const state, const int v)
Definition: ffv1.h:164
uint32_t av_crc(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t length)
Calculate the CRC of a block.
Definition: crc.c:357
int slice_count
Definition: ffv1.h:129
int max_slice_count
Definition: ffv1.h:130
void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
Definition: rangecoder.c:63
av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
Definition: ffv1.c:117
av_cold int ff_ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:67
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:378
int ac_byte_count
number of bytes used for AC coding
Definition: ffv1.h:102
int16_t drift
Definition: ffv1.h:62
#define src
Definition: vp9dsp.c:530
int packed_at_lsb
Definition: ffv1.h:123
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:342
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:361
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:514
static const float pred[4]
Definition: siprdata.h:259
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:354
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1025
int context_count[MAX_QUANT_TABLES]
Definition: ffv1.h:106
Libavcodec external API header.
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_WB32 unsigned int_TMPL AV_RB24
Definition: bytestream.h:87
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:215
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:188
int debug
debug
Definition: avcodec.h:2899
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
main external API structure.
Definition: avcodec.h:1659
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:320
int intra
Definition: ffv1.h:117
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:263
void * buf
Definition: avisynth_c.h:690
int extradata_size
Definition: avcodec.h:1775
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:343
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
int use32bit
Definition: ffv1.h:114
Rational number (pair of numerator and denominator).
Definition: rational.h:58
av_cold void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf, int buf_size)
Definition: rangecoder.c:53
#define AC_GOLOMB_RICE
Definition: ffv1.h:56
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:406
int picture_number
Definition: ffv1.h:94
uint16_t error_sum
Definition: ffv1.h:63
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:340
int allocate_progress
Whether to allocate progress for frame threading.
Definition: internal.h:126
int key_frame_ok
Definition: ffv1.h:119
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:360
#define CONTEXT_SIZE
Definition: ffv1.h:51
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:344
int quant_table_index
Definition: ffv1.h:70
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:198
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:343
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:752
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
Y , 8bpp.
Definition: pixfmt.h:70
common internal api header.
if(ret< 0)
Definition: vf_mcdeint.c:282
static double c[64]
void ff_ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:182
static struct @229 state
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:375
uint8_t(* state)[CONTEXT_SIZE]
Definition: ffv1.h:72
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:69
int den
Denominator.
Definition: rational.h:60
int slice_coding_mode
Definition: ffv1.h:138
uint8_t * bytestream_start
Definition: rangecoder.h:42
static av_cold int decode_init(AVCodecContext *avctx)
Definition: ffv1dec.c:756
void * priv_data
Definition: avcodec.h:1701
int chroma_h_shift
Definition: ffv1.h:91
PlaneContext plane[MAX_PLANES]
Definition: ffv1.h:103
int transparency
Definition: ffv1.h:92
#define av_free(p)
int(* execute)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size)
The codec may call this to execute several independent things.
Definition: avcodec.h:3130
struct FFV1Context * fsrc
Definition: ffv1.h:97
int chroma_v_shift
Definition: ffv1.h:91
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:323
int len
int chroma_planes
Definition: ffv1.h:90
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:1709
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:253
struct FFV1Context * slice_context[MAX_SLICES]
Definition: ffv1.h:128
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1589
#define av_noinline
Definition: attributes.h:62
#define av_freep(p)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:100
enum AVFieldOrder field_order
Field order.
Definition: avcodec.h:2418
#define av_malloc_array(a, b)
#define FFSWAP(type, a, b)
Definition: common.h:99
int ec
Definition: ffv1.h:116
int depth
Number of bits in the component.
Definition: pixdesc.h:58
static int get_sr_golomb(GetBitContext *gb, int k, int limit, int esc_len)
read signed golomb rice code (ffv1).
Definition: golomb.h:367
int num_v_slices
Definition: ffv1.h:131
exp golomb vlc stuff
This structure stores compressed data.
Definition: avcodec.h:1567
static int read_extra_header(FFV1Context *f)
Definition: ffv1dec.c:397
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:1343
AVCodecContext * avctx
Definition: ffv1.h:81
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:958
int slice_x
Definition: ffv1.h:135
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:355
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1583
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:242
AVCodec ff_ffv1_decoder
Definition: ffv1dec.c:1019
int step
Number of elements between 2 horizontally consecutive pixels.
Definition: pixdesc.h:41
int width
Definition: ffv1.h:89
#define AV_PIX_FMT_0RGB32
Definition: pixfmt.h:324
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
int slice_rct_ry_coef
Definition: ffv1.h:140