FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
ffv1dec.c
Go to the documentation of this file.
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;
49  unsigned a;
50  e = 0;
51  while (get_rac(c, state + 1 + FFMIN(e, 9))) { // 1..10
52  e++;
53  if (e > 31)
54  return AVERROR_INVALIDDATA;
55  }
56 
57  a = 1;
58  for (i = e - 1; i >= 0; i--)
59  a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
60 
61  e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
62  return (a ^ e) - e;
63  }
64 }
65 
66 static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
67 {
68  return get_symbol_inline(c, state, is_signed);
69 }
70 
71 static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
72  int bits)
73 {
74  int k, i, v, ret;
75 
76  i = state->count;
77  k = 0;
78  while (i < state->error_sum) { // FIXME: optimize
79  k++;
80  i += i;
81  }
82 
83  v = get_sr_golomb(gb, k, 12, bits);
84  ff_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
85  v, state->bias, state->error_sum, state->drift, state->count, k);
86 
87  v ^= ((2 * state->drift + state->count) >> 31);
88 
89  ret = fold(v + state->bias, bits);
90 
91  update_vlc_state(state, v);
92 
93  return ret;
94 }
95 
97 {
98  if (s->ac != AC_GOLOMB_RICE) {
99  RangeCoder *const c = &s->c;
100  if (c->overread > MAX_OVERREAD)
101  return AVERROR_INVALIDDATA;
102  } else {
103  if (get_bits_left(&s->gb) < 1)
104  return AVERROR_INVALIDDATA;
105  }
106  return 0;
107 }
108 
109 #define TYPE int16_t
110 #define RENAME(name) name
111 #include "ffv1dec_template.c"
112 #undef TYPE
113 #undef RENAME
114 
115 #define TYPE int32_t
116 #define RENAME(name) name ## 32
117 #include "ffv1dec_template.c"
118 
120  int w, int h, int stride, int plane_index,
121  int pixel_stride)
122 {
123  int x, y;
124  int16_t *sample[2];
125  sample[0] = s->sample_buffer + 3;
126  sample[1] = s->sample_buffer + w + 6 + 3;
127 
128  s->run_index = 0;
129 
130  memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
131 
132  for (y = 0; y < h; y++) {
133  int16_t *temp = sample[0]; // FIXME: try a normal buffer
134 
135  sample[0] = sample[1];
136  sample[1] = temp;
137 
138  sample[1][-1] = sample[0][0];
139  sample[0][w] = sample[0][w - 1];
140 
141 // { START_TIMER
142  if (s->avctx->bits_per_raw_sample <= 8) {
143  int ret = decode_line(s, w, sample, plane_index, 8);
144  if (ret < 0)
145  return ret;
146  for (x = 0; x < w; x++)
147  src[x*pixel_stride + stride * y] = sample[1][x];
148  } else {
149  int ret = decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
150  if (ret < 0)
151  return ret;
152  if (s->packed_at_lsb) {
153  for (x = 0; x < w; x++) {
154  ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x];
155  }
156  } else {
157  for (x = 0; x < w; x++) {
158  ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample) | ((uint16_t **)sample)[1][x] >> (2 * s->avctx->bits_per_raw_sample - 16);
159  }
160  }
161  }
162 // STOP_TIMER("decode-line") }
163  }
164  return 0;
165 }
166 
168 {
169  RangeCoder *c = &fs->c;
171  unsigned ps, i, context_count;
172  memset(state, 128, sizeof(state));
173 
174  av_assert0(f->version > 2);
175 
176  fs->slice_x = get_symbol(c, state, 0) * f->width ;
177  fs->slice_y = get_symbol(c, state, 0) * f->height;
178  fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
179  fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
180 
181  fs->slice_x /= f->num_h_slices;
182  fs->slice_y /= f->num_v_slices;
183  fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
184  fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
185  if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
186  return -1;
187  if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
188  || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
189  return -1;
190 
191  for (i = 0; i < f->plane_count; i++) {
192  PlaneContext * const p = &fs->plane[i];
193  int idx = get_symbol(c, state, 0);
194  if (idx >= (unsigned)f->quant_table_count) {
195  av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
196  return -1;
197  }
198  p->quant_table_index = idx;
199  memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
200  context_count = f->context_count[idx];
201 
202  if (p->context_count < context_count) {
203  av_freep(&p->state);
204  av_freep(&p->vlc_state);
205  }
207  }
208 
209  ps = get_symbol(c, state, 0);
210  if (ps == 1) {
211  f->cur->interlaced_frame = 1;
212  f->cur->top_field_first = 1;
213  } else if (ps == 2) {
214  f->cur->interlaced_frame = 1;
215  f->cur->top_field_first = 0;
216  } else if (ps == 3) {
217  f->cur->interlaced_frame = 0;
218  }
219  f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
220  f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
221 
222  if (av_image_check_sar(f->width, f->height,
223  f->cur->sample_aspect_ratio) < 0) {
224  av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
227  f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
228  }
229 
230  if (fs->version > 3) {
231  fs->slice_reset_contexts = get_rac(c, state);
232  fs->slice_coding_mode = get_symbol(c, state, 0);
233  if (fs->slice_coding_mode != 1) {
234  fs->slice_rct_by_coef = get_symbol(c, state, 0);
235  fs->slice_rct_ry_coef = get_symbol(c, state, 0);
236  if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
237  av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
238  return AVERROR_INVALIDDATA;
239  }
240  }
241  }
242 
243  return 0;
244 }
245 
246 static int decode_slice(AVCodecContext *c, void *arg)
247 {
248  FFV1Context *fs = *(void **)arg;
249  FFV1Context *f = fs->avctx->priv_data;
250  int width, height, x, y, ret;
251  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
252  AVFrame * const p = f->cur;
253  int i, si;
254 
255  for( si=0; fs != f->slice_context[si]; si ++)
256  ;
257 
258  if(f->fsrc && !p->key_frame)
260 
261  if(f->fsrc && !p->key_frame) {
262  FFV1Context *fssrc = f->fsrc->slice_context[si];
263  FFV1Context *fsdst = f->slice_context[si];
264  av_assert1(fsdst->plane_count == fssrc->plane_count);
265  av_assert1(fsdst == fs);
266 
267  if (!p->key_frame)
268  fsdst->slice_damaged |= fssrc->slice_damaged;
269 
270  for (i = 0; i < f->plane_count; i++) {
271  PlaneContext *psrc = &fssrc->plane[i];
272  PlaneContext *pdst = &fsdst->plane[i];
273 
274  av_free(pdst->state);
275  av_free(pdst->vlc_state);
276  memcpy(pdst, psrc, sizeof(*pdst));
277  pdst->state = NULL;
278  pdst->vlc_state = NULL;
279 
280  if (fssrc->ac) {
282  memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
283  } else {
284  pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
285  memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
286  }
287  }
288  }
289 
290  fs->slice_rct_by_coef = 1;
291  fs->slice_rct_ry_coef = 1;
292 
293  if (f->version > 2) {
294  if (ff_ffv1_init_slice_state(f, fs) < 0)
295  return AVERROR(ENOMEM);
296  if (decode_slice_header(f, fs) < 0) {
297  fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0;
298  fs->slice_damaged = 1;
299  return AVERROR_INVALIDDATA;
300  }
301  }
302  if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
303  return ret;
304  if (f->cur->key_frame || fs->slice_reset_contexts)
306 
307  width = fs->slice_width;
308  height = fs->slice_height;
309  x = fs->slice_x;
310  y = fs->slice_y;
311 
312  if (fs->ac == AC_GOLOMB_RICE) {
313  if (f->version == 3 && f->micro_version > 1 || f->version > 3)
314  get_rac(&fs->c, (uint8_t[]) { 129 });
315  fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
316  init_get_bits(&fs->gb,
317  fs->c.bytestream_start + fs->ac_byte_count,
318  (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
319  }
320 
321  av_assert1(width && height);
322  if (f->colorspace == 0 && (f->chroma_planes || !fs->transparency)) {
323  const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
324  const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
325  const int cx = x >> f->chroma_h_shift;
326  const int cy = y >> f->chroma_v_shift;
327  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
328 
329  if (f->chroma_planes) {
330  decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
331  decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
332  }
333  if (fs->transparency)
334  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);
335  } else if (f->colorspace == 0) {
336  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2);
337  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2);
338  } else if (f->use32bit) {
339  uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
340  p->data[1] + ps * x + y * p->linesize[1],
341  p->data[2] + ps * x + y * p->linesize[2] };
342  decode_rgb_frame32(fs, planes, width, height, p->linesize);
343  } else {
344  uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
345  p->data[1] + ps * x + y * p->linesize[1],
346  p->data[2] + ps * x + y * p->linesize[2] };
347  decode_rgb_frame(fs, planes, width, height, p->linesize);
348  }
349  if (fs->ac != AC_GOLOMB_RICE && f->version > 2) {
350  int v;
351  get_rac(&fs->c, (uint8_t[]) { 129 });
352  v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
353  if (v) {
354  av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
355  fs->slice_damaged = 1;
356  }
357  }
358 
359  emms_c();
360 
361  ff_thread_report_progress(&f->picture, si, 0);
362 
363  return 0;
364 }
365 
366 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
367 {
368  int v;
369  int i = 0;
371 
372  memset(state, 128, sizeof(state));
373 
374  for (v = 0; i < 128; v++) {
375  unsigned len = get_symbol(c, state, 0) + 1U;
376 
377  if (len > 128 - i || !len)
378  return AVERROR_INVALIDDATA;
379 
380  while (len--) {
381  quant_table[i] = scale * v;
382  i++;
383  }
384  }
385 
386  for (i = 1; i < 128; i++)
387  quant_table[256 - i] = -quant_table[i];
388  quant_table[128] = -quant_table[127];
389 
390  return 2 * v - 1;
391 }
392 
394  int16_t quant_table[MAX_CONTEXT_INPUTS][256])
395 {
396  int i;
397  int context_count = 1;
398 
399  for (i = 0; i < 5; i++) {
400  int ret = read_quant_table(c, quant_table[i], context_count);
401  if (ret < 0)
402  return ret;
403  context_count *= ret;
404  if (context_count > 32768U) {
405  return AVERROR_INVALIDDATA;
406  }
407  }
408  return (context_count + 1) / 2;
409 }
410 
412 {
413  RangeCoder *const c = &f->c;
415  int i, j, k, ret;
416  uint8_t state2[32][CONTEXT_SIZE];
417  unsigned crc = 0;
418 
419  memset(state2, 128, sizeof(state2));
420  memset(state, 128, sizeof(state));
421 
423  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
424 
425  f->version = get_symbol(c, state, 0);
426  if (f->version < 2) {
427  av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
428  return AVERROR_INVALIDDATA;
429  }
430  if (f->version > 2) {
431  c->bytestream_end -= 4;
432  f->micro_version = get_symbol(c, state, 0);
433  if (f->micro_version < 0)
434  return AVERROR_INVALIDDATA;
435  }
436  f->ac = get_symbol(c, state, 0);
437 
438  if (f->ac == AC_RANGE_CUSTOM_TAB) {
439  for (i = 1; i < 256; i++)
440  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
441  }
442 
443  f->colorspace = get_symbol(c, state, 0); //YUV cs type
444  f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
445  f->chroma_planes = get_rac(c, state);
446  f->chroma_h_shift = get_symbol(c, state, 0);
447  f->chroma_v_shift = get_symbol(c, state, 0);
448  f->transparency = get_rac(c, state);
449  f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
450  f->num_h_slices = 1 + get_symbol(c, state, 0);
451  f->num_v_slices = 1 + get_symbol(c, state, 0);
452 
453  if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
454  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
456  return AVERROR_INVALIDDATA;
457  }
458 
459  if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
460  f->num_v_slices > (unsigned)f->height || !f->num_v_slices
461  ) {
462  av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
463  return AVERROR_INVALIDDATA;
464  }
465 
466  f->quant_table_count = get_symbol(c, state, 0);
467  if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
468  av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
469  f->quant_table_count = 0;
470  return AVERROR_INVALIDDATA;
471  }
472 
473  for (i = 0; i < f->quant_table_count; i++) {
474  f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
475  if (f->context_count[i] < 0) {
476  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
477  return AVERROR_INVALIDDATA;
478  }
479  }
480  if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
481  return ret;
482 
483  for (i = 0; i < f->quant_table_count; i++)
484  if (get_rac(c, state)) {
485  for (j = 0; j < f->context_count[i]; j++)
486  for (k = 0; k < CONTEXT_SIZE; k++) {
487  int pred = j ? f->initial_states[i][j - 1][k] : 128;
488  f->initial_states[i][j][k] =
489  (pred + get_symbol(c, state2[k], 1)) & 0xFF;
490  }
491  }
492 
493  if (f->version > 2) {
494  f->ec = get_symbol(c, state, 0);
495  if (f->micro_version > 2)
496  f->intra = get_symbol(c, state, 0);
497  }
498 
499  if (f->version > 2) {
500  unsigned v;
503  if (v || f->avctx->extradata_size < 4) {
504  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
505  return AVERROR_INVALIDDATA;
506  }
507  crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
508  }
509 
510  if (f->avctx->debug & FF_DEBUG_PICT_INFO)
512  "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",
513  f->version, f->micro_version,
514  f->ac,
515  f->colorspace,
518  f->transparency,
519  f->num_h_slices, f->num_v_slices,
521  f->ec,
522  f->intra,
523  crc
524  );
525  return 0;
526 }
527 
528 static int read_header(FFV1Context *f)
529 {
531  int i, j, context_count = -1; //-1 to avoid warning
532  RangeCoder *const c = &f->slice_context[0]->c;
533 
534  memset(state, 128, sizeof(state));
535 
536  if (f->version < 2) {
538  unsigned v= get_symbol(c, state, 0);
539  if (v >= 2) {
540  av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
541  return AVERROR_INVALIDDATA;
542  }
543  f->version = v;
544  f->ac = get_symbol(c, state, 0);
545 
546  if (f->ac == AC_RANGE_CUSTOM_TAB) {
547  for (i = 1; i < 256; i++)
548  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
549  }
550 
551  colorspace = get_symbol(c, state, 0); //YUV cs type
552  bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
553  chroma_planes = get_rac(c, state);
554  chroma_h_shift = get_symbol(c, state, 0);
555  chroma_v_shift = get_symbol(c, state, 0);
556  transparency = get_rac(c, state);
557  if (colorspace == 0 && f->avctx->skip_alpha)
558  transparency = 0;
559 
560  if (f->plane_count) {
561  if (colorspace != f->colorspace ||
562  bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
563  chroma_planes != f->chroma_planes ||
564  chroma_h_shift != f->chroma_h_shift ||
565  chroma_v_shift != f->chroma_v_shift ||
566  transparency != f->transparency) {
567  av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
568  return AVERROR_INVALIDDATA;
569  }
570  }
571 
572  if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
573  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
574  chroma_h_shift, chroma_v_shift);
575  return AVERROR_INVALIDDATA;
576  }
577 
578  f->colorspace = colorspace;
584 
585  f->plane_count = 2 + f->transparency;
586  }
587 
588  if (f->colorspace == 0) {
589  if (!f->transparency && !f->chroma_planes) {
590  if (f->avctx->bits_per_raw_sample <= 8)
592  else if (f->avctx->bits_per_raw_sample == 10) {
593  f->packed_at_lsb = 1;
595  } else if (f->avctx->bits_per_raw_sample == 12) {
596  f->packed_at_lsb = 1;
598  } else if (f->avctx->bits_per_raw_sample == 16) {
599  f->packed_at_lsb = 1;
601  } else if (f->avctx->bits_per_raw_sample < 16) {
603  } else
604  return AVERROR(ENOSYS);
605  } else if (f->transparency && !f->chroma_planes) {
606  if (f->avctx->bits_per_raw_sample <= 8)
608  else
609  return AVERROR(ENOSYS);
610  } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
611  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
612  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
613  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
614  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
615  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
616  case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
617  case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
618  }
619  } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
620  switch(16*f->chroma_h_shift + f->chroma_v_shift) {
621  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
622  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
623  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
624  }
625  } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
626  f->packed_at_lsb = 1;
627  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
628  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
629  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
630  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
631  }
632  } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
633  f->packed_at_lsb = 1;
634  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
635  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
636  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
637  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
638  }
639  } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
640  f->packed_at_lsb = 1;
641  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
642  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
643  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
644  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
645  }
646  } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
647  f->packed_at_lsb = 1;
648  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
649  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
650  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
651  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
652  }
653  } else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency) {
654  f->packed_at_lsb = 1;
655  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
656  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P12; break;
657  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P12; break;
658  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P12; break;
659  }
660  } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
661  f->packed_at_lsb = 1;
662  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
663  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
664  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
665  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
666  }
667  } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
668  f->packed_at_lsb = 1;
669  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
670  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
671  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
672  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
673  }
674  }
675  } else if (f->colorspace == 1) {
676  if (f->chroma_h_shift || f->chroma_v_shift) {
678  "chroma subsampling not supported in this colorspace\n");
679  return AVERROR(ENOSYS);
680  }
681  if ( f->avctx->bits_per_raw_sample <= 8 && !f->transparency)
683  else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency)
685  else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency)
687  else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency)
689  else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency)
691  else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency)
693  else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency) {
695  f->use32bit = 1;
696  }
697  } else {
698  av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
699  return AVERROR(ENOSYS);
700  }
701  if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
702  av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
703  return AVERROR(ENOSYS);
704  }
705 
706  ff_dlog(f->avctx, "%d %d %d\n",
708  if (f->version < 2) {
709  context_count = read_quant_tables(c, f->quant_table);
710  if (context_count < 0) {
711  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
712  return AVERROR_INVALIDDATA;
713  }
715  } else if (f->version < 3) {
716  f->slice_count = get_symbol(c, state, 0);
717  } else {
718  const uint8_t *p = c->bytestream_end;
719  for (f->slice_count = 0;
720  f->slice_count < MAX_SLICES && 3 + 5*!!f->ec < p - c->bytestream_start;
721  f->slice_count++) {
722  int trailer = 3 + 5*!!f->ec;
723  int size = AV_RB24(p-trailer);
724  if (size + trailer > p - c->bytestream_start)
725  break;
726  p -= size + trailer;
727  }
728  }
729  if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) {
730  av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count);
731  return AVERROR_INVALIDDATA;
732  }
733 
734  for (j = 0; j < f->slice_count; j++) {
735  FFV1Context *fs = f->slice_context[j];
736  fs->ac = f->ac;
737  fs->packed_at_lsb = f->packed_at_lsb;
738 
739  fs->slice_damaged = 0;
740 
741  if (f->version == 2) {
742  fs->slice_x = get_symbol(c, state, 0) * f->width ;
743  fs->slice_y = get_symbol(c, state, 0) * f->height;
744  fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
745  fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
746 
747  fs->slice_x /= f->num_h_slices;
748  fs->slice_y /= f->num_v_slices;
749  fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
750  fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
751  if ((unsigned)fs->slice_width > f->width ||
752  (unsigned)fs->slice_height > f->height)
753  return AVERROR_INVALIDDATA;
754  if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
755  || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
756  return AVERROR_INVALIDDATA;
757  }
758 
759  for (i = 0; i < f->plane_count; i++) {
760  PlaneContext *const p = &fs->plane[i];
761 
762  if (f->version == 2) {
763  int idx = get_symbol(c, state, 0);
764  if (idx > (unsigned)f->quant_table_count) {
766  "quant_table_index out of range\n");
767  return AVERROR_INVALIDDATA;
768  }
769  p->quant_table_index = idx;
770  memcpy(p->quant_table, f->quant_tables[idx],
771  sizeof(p->quant_table));
772  context_count = f->context_count[idx];
773  } else {
774  memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
775  }
776 
777  if (f->version <= 2) {
778  av_assert0(context_count >= 0);
779  if (p->context_count < context_count) {
780  av_freep(&p->state);
781  av_freep(&p->vlc_state);
782  }
784  }
785  }
786  }
787  return 0;
788 }
789 
791 {
792  FFV1Context *f = avctx->priv_data;
793  int ret;
794 
795  if ((ret = ff_ffv1_common_init(avctx)) < 0)
796  return ret;
797 
798  if (avctx->extradata_size > 0 && (ret = read_extra_header(f)) < 0)
799  return ret;
800 
801  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
802  return ret;
803 
804  avctx->internal->allocate_progress = 1;
805 
806  return 0;
807 }
808 
809 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
810 {
811  uint8_t *buf = avpkt->data;
812  int buf_size = avpkt->size;
813  FFV1Context *f = avctx->priv_data;
814  RangeCoder *const c = &f->slice_context[0]->c;
815  int i, ret;
816  uint8_t keystate = 128;
817  uint8_t *buf_p;
818  AVFrame *p;
819 
820  if (f->last_picture.f)
823 
824  f->cur = p = f->picture.f;
825 
826  if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
827  /* we have interlaced material flagged in container */
828  p->interlaced_frame = 1;
829  if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
830  p->top_field_first = 1;
831  }
832 
833  f->avctx = avctx;
834  ff_init_range_decoder(c, buf, buf_size);
835  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
836 
837  p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
838  if (get_rac(c, &keystate)) {
839  p->key_frame = 1;
840  f->key_frame_ok = 0;
841  if ((ret = read_header(f)) < 0)
842  return ret;
843  f->key_frame_ok = 1;
844  } else {
845  if (!f->key_frame_ok) {
846  av_log(avctx, AV_LOG_ERROR,
847  "Cannot decode non-keyframe without valid keyframe\n");
848  return AVERROR_INVALIDDATA;
849  }
850  p->key_frame = 0;
851  }
852 
853  if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
854  return ret;
855 
856  if (avctx->debug & FF_DEBUG_PICT_INFO)
857  av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
858  f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
859 
860  ff_thread_finish_setup(avctx);
861 
862  buf_p = buf + buf_size;
863  for (i = f->slice_count - 1; i >= 0; i--) {
864  FFV1Context *fs = f->slice_context[i];
865  int trailer = 3 + 5*!!f->ec;
866  int v;
867 
868  if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
869  else v = buf_p - c->bytestream_start;
870  if (buf_p - c->bytestream_start < v) {
871  av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
872  ff_thread_report_progress(&f->picture, INT_MAX, 0);
873  return AVERROR_INVALIDDATA;
874  }
875  buf_p -= v;
876 
877  if (f->ec) {
878  unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
879  if (crc) {
880  int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
881  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
882  if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
883  av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
884  } else if (ts != AV_NOPTS_VALUE) {
885  av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
886  } else {
887  av_log(f->avctx, AV_LOG_ERROR, "\n");
888  }
889  fs->slice_damaged = 1;
890  }
891  if (avctx->debug & FF_DEBUG_PICT_INFO) {
892  av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08"PRIX32"\n", i, AV_RB32(buf_p + v - 4));
893  }
894  }
895 
896  if (i) {
897  ff_init_range_decoder(&fs->c, buf_p, v);
898  } else
899  fs->c.bytestream_end = buf_p + v;
900 
901  fs->avctx = avctx;
902  fs->cur = p;
903  }
904 
905  avctx->execute(avctx,
906  decode_slice,
907  &f->slice_context[0],
908  NULL,
909  f->slice_count,
910  sizeof(void*));
911 
912  for (i = f->slice_count - 1; i >= 0; i--) {
913  FFV1Context *fs = f->slice_context[i];
914  int j;
915  if (fs->slice_damaged && f->last_picture.f->data[0]) {
917  const uint8_t *src[4];
918  uint8_t *dst[4];
919  ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
920  for (j = 0; j < desc->nb_components; j++) {
921  int pixshift = desc->comp[j].depth > 8;
922  int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
923  int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
924  dst[j] = p->data[j] + p->linesize[j] *
925  (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
926  src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
927  (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
928 
929  }
930  if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
932  dst[1] = p->data[1];
933  src[1] = f->last_picture.f->data[1];
934  }
935  av_image_copy(dst, p->linesize, src,
936  f->last_picture.f->linesize,
937  avctx->pix_fmt,
938  fs->slice_width,
939  fs->slice_height);
940  }
941  }
942  ff_thread_report_progress(&f->picture, INT_MAX, 0);
943 
944  f->picture_number++;
945 
946  if (f->last_picture.f)
948  f->cur = NULL;
949  if ((ret = av_frame_ref(data, f->picture.f)) < 0)
950  return ret;
951 
952  *got_frame = 1;
953 
954  return buf_size;
955 }
956 
957 #if HAVE_THREADS
959 {
960  FFV1Context *f = avctx->priv_data;
961  int i, ret;
962 
963  f->picture.f = NULL;
964  f->last_picture.f = NULL;
965  f->sample_buffer = NULL;
966  f->max_slice_count = 0;
967  f->slice_count = 0;
968 
969  for (i = 0; i < f->quant_table_count; i++) {
970  av_assert0(f->version > 1);
972  f->context_count[i] * sizeof(*f->initial_states[i]));
973  }
974 
975  f->picture.f = av_frame_alloc();
977 
978  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
979  return ret;
980 
981  return 0;
982 }
983 #endif
984 
985 static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
986 {
987  fsdst->version = fsrc->version;
988  fsdst->micro_version = fsrc->micro_version;
989  fsdst->chroma_planes = fsrc->chroma_planes;
990  fsdst->chroma_h_shift = fsrc->chroma_h_shift;
991  fsdst->chroma_v_shift = fsrc->chroma_v_shift;
992  fsdst->transparency = fsrc->transparency;
993  fsdst->plane_count = fsrc->plane_count;
994  fsdst->ac = fsrc->ac;
995  fsdst->colorspace = fsrc->colorspace;
996 
997  fsdst->ec = fsrc->ec;
998  fsdst->intra = fsrc->intra;
999  fsdst->slice_damaged = fssrc->slice_damaged;
1000  fsdst->key_frame_ok = fsrc->key_frame_ok;
1001 
1003  fsdst->packed_at_lsb = fsrc->packed_at_lsb;
1004  fsdst->slice_count = fsrc->slice_count;
1005  if (fsrc->version<3){
1006  fsdst->slice_x = fssrc->slice_x;
1007  fsdst->slice_y = fssrc->slice_y;
1008  fsdst->slice_width = fssrc->slice_width;
1009  fsdst->slice_height = fssrc->slice_height;
1010  }
1011 }
1012 
1013 #if HAVE_THREADS
1014 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1015 {
1016  FFV1Context *fsrc = src->priv_data;
1017  FFV1Context *fdst = dst->priv_data;
1018  int i, ret;
1019 
1020  if (dst == src)
1021  return 0;
1022 
1023  {
1027  memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1028  memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1029 
1030  memcpy(fdst, fsrc, sizeof(*fdst));
1031  memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1032  memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1033  fdst->picture = picture;
1034  fdst->last_picture = last_picture;
1035  for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1036  FFV1Context *fssrc = fsrc->slice_context[i];
1037  FFV1Context *fsdst = fdst->slice_context[i];
1038  copy_fields(fsdst, fssrc, fsrc);
1039  }
1040  av_assert0(!fdst->plane[0].state);
1041  av_assert0(!fdst->sample_buffer);
1042  }
1043 
1044  av_assert1(fdst->max_slice_count == fsrc->max_slice_count);
1045 
1046 
1047  ff_thread_release_buffer(dst, &fdst->picture);
1048  if (fsrc->picture.f->data[0]) {
1049  if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1050  return ret;
1051  }
1052 
1053  fdst->fsrc = fsrc;
1054 
1055  return 0;
1056 }
1057 #endif
1058 
1060  .name = "ffv1",
1061  .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1062  .type = AVMEDIA_TYPE_VIDEO,
1063  .id = AV_CODEC_ID_FFV1,
1064  .priv_data_size = sizeof(FFV1Context),
1065  .init = decode_init,
1066  .close = ff_ffv1_close,
1067  .decode = decode_frame,
1069  .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1070  .capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/ |
1072  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP
1073 };
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:132
#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:407
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:401
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2363
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:403
8 bits gray, 8 bits alpha
Definition: pixfmt.h:139
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:404
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:256
const char * desc
Definition: nvenc.c:63
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static int decode_slice(AVCodecContext *c, void *arg)
Definition: ffv1dec.c:246
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:1401
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:384
static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
Definition: ffv1dec.c:366
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:1697
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:372
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ffv1dec.c:809
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2711
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 src
Definition: vp8dsp.c:254
#define sample
int height
Definition: ffv1.h:89
AVCodec.
Definition: avcodec.h:3351
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
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
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:350
int plane_count
Definition: ffv1.h:100
int slice_damaged
Definition: ffv1.h:118
static int is_input_end(FFV1Context *s)
Definition: ffv1dec.c:96
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:351
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:97
static int read_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256])
Definition: ffv1dec.c:393
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:119
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:150
AVOptions.
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:2569
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:400
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:1588
static struct @281 state
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:400
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:383
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:287
#define height
uint8_t * data
Definition: avcodec.h:1400
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:2012
#define ff_dlog(a,...)
bitstream reader API header.
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:381
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:348
VlcState * vlc_state
Definition: ffv1.h:73
ptrdiff_t size
Definition: opengl_enc.c:101
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:373
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:406
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:3012
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:587
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:172
#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:167
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:3070
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
#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:408
const char * arg
Definition: jacosubdec.c:66
uint16_t width
Definition: gdv.c:47
simple assert() macros that are a bit more flexible than ISO C assert().
const char * name
Name of the codec implementation.
Definition: avcodec.h:3358
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:371
int ff_ffv1_allocate_initial_states(FFV1Context *f)
Definition: ffv1.c:167
#define MAX_SLICES
Definition: dxva2_hevc.c:33
void * av_memdup(const void *p, size_t size)
Duplicate a buffer with av_malloc().
Definition: mem.c:283
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1012
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:386
static int get_vlc_symbol(GetBitContext *gb, VlcState *const state, int bits)
Definition: ffv1dec.c:71
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:225
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
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:366
#define av_flatten
Definition: attributes.h:88
static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
Definition: ffv1dec.c:66
uint8_t state_transition[256]
Definition: ffv1.h:107
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
Definition: ffv1dec.c:985
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:284
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:387
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:352
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
static int decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index, int pixel_stride)
Definition: ffv1dec.c:119
#define FFMIN(a, b)
Definition: common.h:96
int num_h_slices
Definition: ffv1.h:132
#define MAX_QUANT_TABLES
Definition: ffv1.h:53
int colorspace
Definition: ffv1.h:110
#define AV_PIX_FMT_FLAG_PSEUDOPAL
The pixel format is "pseudo-paletted".
Definition: pixdesc.h:158
static float quant_table[96]
Definition: binkaudio.c:43
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:366
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:68
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:405
int ac_byte_count
number of bytes used for AC coding
Definition: ffv1.h:102
int16_t drift
Definition: ffv1.h:62
int packed_at_lsb
Definition: ffv1.h:123
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:367
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:386
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:528
static const float pred[4]
Definition: siprdata.h:259
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:379
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1016
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:232
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:173
int debug
debug
Definition: avcodec.h:2568
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:1488
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:342
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:289
void * buf
Definition: avisynth_c.h:690
int extradata_size
Definition: avcodec.h:1589
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:368
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
#define MAX_OVERREAD
Definition: lagarithrac.h:51
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:425
int picture_number
Definition: ffv1.h:94
uint16_t error_sum
Definition: ffv1.h:63
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:365
int allocate_progress
Whether to allocate progress for frame threading.
Definition: internal.h:149
int key_frame_ok
Definition: ffv1.h:119
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:385
#define CONTEXT_SIZE
Definition: ffv1.h:51
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:369
int quant_table_index
Definition: ffv1.h:70
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:375
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:215
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:349
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:279
int overread
Definition: rangecoder.h:45
static double c[64]
void ff_ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:182
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:402
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:790
void * priv_data
Definition: avcodec.h:1515
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:2779
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:353
int len
int chroma_planes
Definition: ffv1.h:90
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:1523
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:279
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:1399
#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:95
enum AVFieldOrder field_order
Field order.
Definition: avcodec.h:2140
#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:372
int num_v_slices
Definition: ffv1.h:131
exp golomb vlc stuff
This structure stores compressed data.
Definition: avcodec.h:1377
static int read_extra_header(FFV1Context *f)
Definition: ffv1dec.c:411
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:1118
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:956
int slice_x
Definition: ffv1.h:135
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:380
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1393
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
AVCodec ff_ffv1_decoder
Definition: ffv1dec.c:1059
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:346
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
int slice_rct_ry_coef
Definition: ffv1.h:140