FFmpeg
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 "avcodec.h"
34 #include "codec_internal.h"
35 #include "get_bits.h"
36 #include "rangecoder.h"
37 #include "golomb.h"
38 #include "mathops.h"
39 #include "ffv1.h"
40 #include "thread.h"
41 #include "threadframe.h"
42 
43 static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state,
44  int is_signed)
45 {
46  if (get_rac(c, state + 0))
47  return 0;
48  else {
49  int i, e;
50  unsigned a;
51  e = 0;
52  while (get_rac(c, state + 1 + FFMIN(e, 9))) { // 1..10
53  e++;
54  if (e > 31)
55  return AVERROR_INVALIDDATA;
56  }
57 
58  a = 1;
59  for (i = e - 1; i >= 0; i--)
60  a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
61 
62  e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
63  return (a ^ e) - e;
64  }
65 }
66 
67 static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
68 {
69  return get_symbol_inline(c, state, is_signed);
70 }
71 
72 static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
73  int bits)
74 {
75  int k, i, v, ret;
76 
77  i = state->count;
78  k = 0;
79  while (i < state->error_sum) { // FIXME: optimize
80  k++;
81  i += i;
82  }
83 
84  v = get_sr_golomb(gb, k, 12, bits);
85  ff_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
86  v, state->bias, state->error_sum, state->drift, state->count, k);
87 
88  v ^= ((2 * state->drift + state->count) >> 31);
89 
90  ret = fold(v + state->bias, bits);
91 
92  update_vlc_state(state, v);
93 
94  return ret;
95 }
96 
97 static int is_input_end(FFV1Context *s)
98 {
99  if (s->ac != AC_GOLOMB_RICE) {
100  RangeCoder *const c = &s->c;
101  if (c->overread > MAX_OVERREAD)
102  return AVERROR_INVALIDDATA;
103  } else {
104  if (get_bits_left(&s->gb) < 1)
105  return AVERROR_INVALIDDATA;
106  }
107  return 0;
108 }
109 
110 #define TYPE int16_t
111 #define RENAME(name) name
112 #include "ffv1dec_template.c"
113 #undef TYPE
114 #undef RENAME
115 
116 #define TYPE int32_t
117 #define RENAME(name) name ## 32
118 #include "ffv1dec_template.c"
119 
120 static int decode_plane(FFV1Context *s, uint8_t *src,
121  int w, int h, int stride, int plane_index,
122  int pixel_stride)
123 {
124  int x, y;
125  int16_t *sample[2];
126  sample[0] = s->sample_buffer + 3;
127  sample[1] = s->sample_buffer + w + 6 + 3;
128 
129  s->run_index = 0;
130 
131  memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
132 
133  for (y = 0; y < h; y++) {
134  int16_t *temp = sample[0]; // FIXME: try a normal buffer
135 
136  sample[0] = sample[1];
137  sample[1] = temp;
138 
139  sample[1][-1] = sample[0][0];
140  sample[0][w] = sample[0][w - 1];
141 
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  }
163  return 0;
164 }
165 
166 static int decode_slice_header(const FFV1Context *f, FFV1Context *fs)
167 {
168  RangeCoder *c = &fs->c;
169  uint8_t state[CONTEXT_SIZE];
170  unsigned ps, i, context_count;
171  int sx, sy, sw, sh;
172 
173  memset(state, 128, sizeof(state));
174  sx = get_symbol(c, state, 0);
175  sy = get_symbol(c, state, 0);
176  sw = get_symbol(c, state, 0) + 1U;
177  sh = get_symbol(c, state, 0) + 1U;
178 
179  av_assert0(f->version > 2);
180 
181 
182  if (sx < 0 || sy < 0 || sw <= 0 || sh <= 0)
183  return AVERROR_INVALIDDATA;
184  if (sx > f->num_h_slices - sw || sy > f->num_v_slices - sh)
185  return AVERROR_INVALIDDATA;
186 
187  fs->slice_x = sx * (int64_t)f->width / f->num_h_slices;
188  fs->slice_y = sy * (int64_t)f->height / f->num_v_slices;
189  fs->slice_width = (sx + sw) * (int64_t)f->width / f->num_h_slices - fs->slice_x;
190  fs->slice_height = (sy + sh) * (int64_t)f->height / f->num_v_slices - fs->slice_y;
191 
192  av_assert0((unsigned)fs->slice_width <= f->width &&
193  (unsigned)fs->slice_height <= f->height);
194  av_assert0 ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width <= f->width
195  && (unsigned)fs->slice_y + (uint64_t)fs->slice_height <= f->height);
196 
197  if (fs->ac == AC_GOLOMB_RICE && fs->slice_width >= (1<<23))
198  return AVERROR_INVALIDDATA;
199 
200  for (i = 0; i < f->plane_count; i++) {
201  PlaneContext * const p = &fs->plane[i];
202  int idx = get_symbol(c, state, 0);
203  if (idx >= (unsigned)f->quant_table_count) {
204  av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
205  return -1;
206  }
207  p->quant_table_index = idx;
208  memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
209  context_count = f->context_count[idx];
210 
211  if (p->context_count < context_count) {
212  av_freep(&p->state);
213  av_freep(&p->vlc_state);
214  }
215  p->context_count = context_count;
216  }
217 
218  ps = get_symbol(c, state, 0);
219  if (ps == 1) {
220  f->cur->interlaced_frame = 1;
221  f->cur->top_field_first = 1;
222  } else if (ps == 2) {
223  f->cur->interlaced_frame = 1;
224  f->cur->top_field_first = 0;
225  } else if (ps == 3) {
226  f->cur->interlaced_frame = 0;
227  }
228  f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
229  f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
230 
231  if (av_image_check_sar(f->width, f->height,
232  f->cur->sample_aspect_ratio) < 0) {
233  av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
234  f->cur->sample_aspect_ratio.num,
235  f->cur->sample_aspect_ratio.den);
236  f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
237  }
238 
239  if (fs->version > 3) {
240  fs->slice_reset_contexts = get_rac(c, state);
241  fs->slice_coding_mode = get_symbol(c, state, 0);
242  if (fs->slice_coding_mode != 1) {
243  fs->slice_rct_by_coef = get_symbol(c, state, 0);
244  fs->slice_rct_ry_coef = get_symbol(c, state, 0);
245  if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
246  av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
247  return AVERROR_INVALIDDATA;
248  }
249  }
250  }
251 
252  return 0;
253 }
254 
255 static int decode_slice(AVCodecContext *c, void *arg)
256 {
257  FFV1Context *fs = *(void **)arg;
258  FFV1Context *f = fs->avctx->priv_data;
259  int width, height, x, y, ret;
260  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
261  AVFrame * const p = f->cur;
262  int i, si;
263 
264  for( si=0; fs != f->slice_context[si]; si ++)
265  ;
266 
267  if(f->fsrc && !p->key_frame)
268  ff_thread_await_progress(&f->last_picture, si, 0);
269 
270  if(f->fsrc && !p->key_frame) {
271  FFV1Context *fssrc = f->fsrc->slice_context[si];
272  FFV1Context *fsdst = f->slice_context[si];
273  av_assert1(fsdst->plane_count == fssrc->plane_count);
274  av_assert1(fsdst == fs);
275 
276  if (!p->key_frame)
277  fsdst->slice_damaged |= fssrc->slice_damaged;
278 
279  for (i = 0; i < f->plane_count; i++) {
280  PlaneContext *psrc = &fssrc->plane[i];
281  PlaneContext *pdst = &fsdst->plane[i];
282 
283  av_free(pdst->state);
284  av_free(pdst->vlc_state);
285  memcpy(pdst, psrc, sizeof(*pdst));
286  pdst->state = NULL;
287  pdst->vlc_state = NULL;
288 
289  if (fssrc->ac) {
290  pdst->state = av_malloc_array(CONTEXT_SIZE, psrc->context_count);
291  memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
292  } else {
293  pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
294  memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
295  }
296  }
297  }
298 
299  fs->slice_rct_by_coef = 1;
300  fs->slice_rct_ry_coef = 1;
301 
302  if (f->version > 2) {
303  if (ff_ffv1_init_slice_state(f, fs) < 0)
304  return AVERROR(ENOMEM);
305  if (decode_slice_header(f, fs) < 0) {
306  fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0;
307  fs->slice_damaged = 1;
308  return AVERROR_INVALIDDATA;
309  }
310  }
311  if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
312  return ret;
313  if (f->cur->key_frame || fs->slice_reset_contexts) {
314  ff_ffv1_clear_slice_state(f, fs);
315  } else if (fs->slice_damaged) {
316  return AVERROR_INVALIDDATA;
317  }
318 
319  width = fs->slice_width;
320  height = fs->slice_height;
321  x = fs->slice_x;
322  y = fs->slice_y;
323 
324  if (fs->ac == AC_GOLOMB_RICE) {
325  if (f->version == 3 && f->micro_version > 1 || f->version > 3)
326  get_rac(&fs->c, (uint8_t[]) { 129 });
327  fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
328  init_get_bits(&fs->gb,
329  fs->c.bytestream_start + fs->ac_byte_count,
330  (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
331  }
332 
333  av_assert1(width && height);
334  if (f->colorspace == 0 && (f->chroma_planes || !fs->transparency)) {
335  const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
336  const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
337  const int cx = x >> f->chroma_h_shift;
338  const int cy = y >> f->chroma_v_shift;
339  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
340 
341  if (f->chroma_planes) {
342  decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
343  decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
344  }
345  if (fs->transparency)
346  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);
347  } else if (f->colorspace == 0) {
348  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2);
349  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2);
350  } else if (f->use32bit) {
351  uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0],
352  p->data[1] + ps * x + y * p->linesize[1],
353  p->data[2] + ps * x + y * p->linesize[2],
354  p->data[3] + ps * x + y * p->linesize[3] };
355  decode_rgb_frame32(fs, planes, width, height, p->linesize);
356  } else {
357  uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0],
358  p->data[1] + ps * x + y * p->linesize[1],
359  p->data[2] + ps * x + y * p->linesize[2],
360  p->data[3] + ps * x + y * p->linesize[3] };
361  decode_rgb_frame(fs, planes, width, height, p->linesize);
362  }
363  if (fs->ac != AC_GOLOMB_RICE && f->version > 2) {
364  int v;
365  get_rac(&fs->c, (uint8_t[]) { 129 });
366  v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
367  if (v) {
368  av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
369  fs->slice_damaged = 1;
370  }
371  }
372 
373  ff_thread_report_progress(&f->picture, si, 0);
374 
375  return 0;
376 }
377 
378 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
379 {
380  int v;
381  int i = 0;
382  uint8_t state[CONTEXT_SIZE];
383 
384  memset(state, 128, sizeof(state));
385 
386  for (v = 0; i < 128; v++) {
387  unsigned len = get_symbol(c, state, 0) + 1U;
388 
389  if (len > 128 - i || !len)
390  return AVERROR_INVALIDDATA;
391 
392  while (len--) {
393  quant_table[i] = scale * v;
394  i++;
395  }
396  }
397 
398  for (i = 1; i < 128; i++)
399  quant_table[256 - i] = -quant_table[i];
400  quant_table[128] = -quant_table[127];
401 
402  return 2 * v - 1;
403 }
404 
405 static int read_quant_tables(RangeCoder *c,
406  int16_t quant_table[MAX_CONTEXT_INPUTS][256])
407 {
408  int i;
409  int context_count = 1;
410 
411  for (i = 0; i < 5; i++) {
412  int ret = read_quant_table(c, quant_table[i], context_count);
413  if (ret < 0)
414  return ret;
415  context_count *= ret;
416  if (context_count > 32768U) {
417  return AVERROR_INVALIDDATA;
418  }
419  }
420  return (context_count + 1) / 2;
421 }
422 
423 static int read_extra_header(FFV1Context *f)
424 {
425  RangeCoder *const c = &f->c;
426  uint8_t state[CONTEXT_SIZE];
427  int i, j, k, ret;
428  uint8_t state2[32][CONTEXT_SIZE];
429  unsigned crc = 0;
430 
431  memset(state2, 128, sizeof(state2));
432  memset(state, 128, sizeof(state));
433 
434  ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);
435  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
436 
437  f->version = get_symbol(c, state, 0);
438  if (f->version < 2) {
439  av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
440  return AVERROR_INVALIDDATA;
441  }
442  if (f->version > 2) {
443  c->bytestream_end -= 4;
444  f->micro_version = get_symbol(c, state, 0);
445  if (f->micro_version < 0)
446  return AVERROR_INVALIDDATA;
447  }
448  f->ac = get_symbol(c, state, 0);
449 
450  if (f->ac == AC_RANGE_CUSTOM_TAB) {
451  for (i = 1; i < 256; i++)
452  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
453  }
454 
455  f->colorspace = get_symbol(c, state, 0); //YUV cs type
456  f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
457  f->chroma_planes = get_rac(c, state);
458  f->chroma_h_shift = get_symbol(c, state, 0);
459  f->chroma_v_shift = get_symbol(c, state, 0);
460  f->transparency = get_rac(c, state);
461  f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
462  f->num_h_slices = 1 + get_symbol(c, state, 0);
463  f->num_v_slices = 1 + get_symbol(c, state, 0);
464 
465  if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
466  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
467  f->chroma_h_shift, f->chroma_v_shift);
468  return AVERROR_INVALIDDATA;
469  }
470 
471  if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
472  f->num_v_slices > (unsigned)f->height || !f->num_v_slices
473  ) {
474  av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
475  return AVERROR_INVALIDDATA;
476  }
477 
478  if (f->num_h_slices > MAX_SLICES / f->num_v_slices) {
479  av_log(f->avctx, AV_LOG_ERROR, "slice count unsupported\n");
480  return AVERROR_PATCHWELCOME;
481  }
482 
483  f->quant_table_count = get_symbol(c, state, 0);
484  if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
485  av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
486  f->quant_table_count = 0;
487  return AVERROR_INVALIDDATA;
488  }
489 
490  for (i = 0; i < f->quant_table_count; i++) {
491  f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
492  if (f->context_count[i] < 0) {
493  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
494  return AVERROR_INVALIDDATA;
495  }
496  }
497  if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
498  return ret;
499 
500  for (i = 0; i < f->quant_table_count; i++)
501  if (get_rac(c, state)) {
502  for (j = 0; j < f->context_count[i]; j++)
503  for (k = 0; k < CONTEXT_SIZE; k++) {
504  int pred = j ? f->initial_states[i][j - 1][k] : 128;
505  f->initial_states[i][j][k] =
506  (pred + get_symbol(c, state2[k], 1)) & 0xFF;
507  }
508  }
509 
510  if (f->version > 2) {
511  f->ec = get_symbol(c, state, 0);
512  if (f->micro_version > 2)
513  f->intra = get_symbol(c, state, 0);
514  }
515 
516  if (f->version > 2) {
517  unsigned v;
518  v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0,
519  f->avctx->extradata, f->avctx->extradata_size);
520  if (v || f->avctx->extradata_size < 4) {
521  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
522  return AVERROR_INVALIDDATA;
523  }
524  crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
525  }
526 
527  if (f->avctx->debug & FF_DEBUG_PICT_INFO)
528  av_log(f->avctx, AV_LOG_DEBUG,
529  "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",
530  f->version, f->micro_version,
531  f->ac,
532  f->colorspace,
533  f->avctx->bits_per_raw_sample,
534  f->chroma_planes, f->chroma_h_shift, f->chroma_v_shift,
535  f->transparency,
536  f->num_h_slices, f->num_v_slices,
537  f->quant_table_count,
538  f->ec,
539  f->intra,
540  crc
541  );
542  return 0;
543 }
544 
545 static int read_header(FFV1Context *f)
546 {
547  uint8_t state[CONTEXT_SIZE];
548  int i, j, context_count = -1; //-1 to avoid warning
549  RangeCoder *const c = &f->slice_context[0]->c;
550 
551  memset(state, 128, sizeof(state));
552 
553  if (f->version < 2) {
554  int chroma_planes, chroma_h_shift, chroma_v_shift, transparency, colorspace, bits_per_raw_sample;
555  unsigned v= get_symbol(c, state, 0);
556  if (v >= 2) {
557  av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
558  return AVERROR_INVALIDDATA;
559  }
560  f->version = v;
561  f->ac = get_symbol(c, state, 0);
562 
563  if (f->ac == AC_RANGE_CUSTOM_TAB) {
564  for (i = 1; i < 256; i++) {
565  int st = get_symbol(c, state, 1) + c->one_state[i];
566  if (st < 1 || st > 255) {
567  av_log(f->avctx, AV_LOG_ERROR, "invalid state transition %d\n", st);
568  return AVERROR_INVALIDDATA;
569  }
570  f->state_transition[i] = st;
571  }
572  }
573 
574  colorspace = get_symbol(c, state, 0); //YUV cs type
575  bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
576  chroma_planes = get_rac(c, state);
577  chroma_h_shift = get_symbol(c, state, 0);
578  chroma_v_shift = get_symbol(c, state, 0);
579  transparency = get_rac(c, state);
580  if (colorspace == 0 && f->avctx->skip_alpha)
581  transparency = 0;
582 
583  if (f->plane_count) {
584  if (colorspace != f->colorspace ||
585  bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
586  chroma_planes != f->chroma_planes ||
587  chroma_h_shift != f->chroma_h_shift ||
588  chroma_v_shift != f->chroma_v_shift ||
589  transparency != f->transparency) {
590  av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
591  return AVERROR_INVALIDDATA;
592  }
593  }
594 
595  if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
596  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
597  chroma_h_shift, chroma_v_shift);
598  return AVERROR_INVALIDDATA;
599  }
600 
601  f->colorspace = colorspace;
602  f->avctx->bits_per_raw_sample = bits_per_raw_sample;
603  f->chroma_planes = chroma_planes;
604  f->chroma_h_shift = chroma_h_shift;
605  f->chroma_v_shift = chroma_v_shift;
606  f->transparency = transparency;
607 
608  f->plane_count = 2 + f->transparency;
609  }
610 
611  if (f->colorspace == 0) {
612  if (!f->transparency && !f->chroma_planes) {
613  if (f->avctx->bits_per_raw_sample <= 8)
614  f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
615  else if (f->avctx->bits_per_raw_sample == 9) {
616  f->packed_at_lsb = 1;
617  f->avctx->pix_fmt = AV_PIX_FMT_GRAY9;
618  } else if (f->avctx->bits_per_raw_sample == 10) {
619  f->packed_at_lsb = 1;
620  f->avctx->pix_fmt = AV_PIX_FMT_GRAY10;
621  } else if (f->avctx->bits_per_raw_sample == 12) {
622  f->packed_at_lsb = 1;
623  f->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
624  } else if (f->avctx->bits_per_raw_sample == 16) {
625  f->packed_at_lsb = 1;
626  f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
627  } else if (f->avctx->bits_per_raw_sample < 16) {
628  f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
629  } else
630  return AVERROR(ENOSYS);
631  } else if (f->transparency && !f->chroma_planes) {
632  if (f->avctx->bits_per_raw_sample <= 8)
633  f->avctx->pix_fmt = AV_PIX_FMT_YA8;
634  else
635  return AVERROR(ENOSYS);
636  } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
637  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
638  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
639  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
640  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
641  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
642  case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
643  case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
644  }
645  } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
646  switch(16*f->chroma_h_shift + f->chroma_v_shift) {
647  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
648  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
649  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
650  }
651  } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
652  f->packed_at_lsb = 1;
653  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
654  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
655  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
656  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
657  }
658  } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
659  f->packed_at_lsb = 1;
660  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
661  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
662  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
663  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
664  }
665  } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
666  f->packed_at_lsb = 1;
667  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
668  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
669  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P10; break;
670  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
671  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
672  }
673  } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
674  f->packed_at_lsb = 1;
675  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
676  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
677  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
678  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
679  }
680  } else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency) {
681  f->packed_at_lsb = 1;
682  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
683  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P12; break;
684  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P12; break;
685  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P12; break;
686  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P12; break;
687  }
688  } else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency) {
689  f->packed_at_lsb = 1;
690  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
691  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P14; break;
692  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P14; break;
693  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P14; break;
694  }
695  } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
696  f->packed_at_lsb = 1;
697  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
698  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
699  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
700  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
701  }
702  } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
703  f->packed_at_lsb = 1;
704  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
705  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
706  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
707  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
708  }
709  }
710  } else if (f->colorspace == 1) {
711  if (f->chroma_h_shift || f->chroma_v_shift) {
712  av_log(f->avctx, AV_LOG_ERROR,
713  "chroma subsampling not supported in this colorspace\n");
714  return AVERROR(ENOSYS);
715  }
716  if ( f->avctx->bits_per_raw_sample <= 8 && !f->transparency)
717  f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
718  else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency)
719  f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
720  else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency)
721  f->avctx->pix_fmt = AV_PIX_FMT_GBRP9;
722  else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency)
723  f->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
724  else if (f->avctx->bits_per_raw_sample == 10 && f->transparency)
725  f->avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
726  else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency)
727  f->avctx->pix_fmt = AV_PIX_FMT_GBRP12;
728  else if (f->avctx->bits_per_raw_sample == 12 && f->transparency)
729  f->avctx->pix_fmt = AV_PIX_FMT_GBRAP12;
730  else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency)
731  f->avctx->pix_fmt = AV_PIX_FMT_GBRP14;
732  else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency) {
733  f->avctx->pix_fmt = AV_PIX_FMT_GBRP16;
734  f->use32bit = 1;
735  }
736  else if (f->avctx->bits_per_raw_sample == 16 && f->transparency) {
737  f->avctx->pix_fmt = AV_PIX_FMT_GBRAP16;
738  f->use32bit = 1;
739  }
740  } else {
741  av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
742  return AVERROR(ENOSYS);
743  }
744  if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
745  av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
746  return AVERROR(ENOSYS);
747  }
748 
749  ff_dlog(f->avctx, "%d %d %d\n",
750  f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt);
751  if (f->version < 2) {
752  context_count = read_quant_tables(c, f->quant_table);
753  if (context_count < 0) {
754  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
755  return AVERROR_INVALIDDATA;
756  }
757  f->slice_count = f->max_slice_count;
758  } else if (f->version < 3) {
759  f->slice_count = get_symbol(c, state, 0);
760  } else {
761  const uint8_t *p = c->bytestream_end;
762  for (f->slice_count = 0;
763  f->slice_count < MAX_SLICES && 3 + 5*!!f->ec < p - c->bytestream_start;
764  f->slice_count++) {
765  int trailer = 3 + 5*!!f->ec;
766  int size = AV_RB24(p-trailer);
767  if (size + trailer > p - c->bytestream_start)
768  break;
769  p -= size + trailer;
770  }
771  }
772  if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) {
773  av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count);
774  return AVERROR_INVALIDDATA;
775  }
776 
777  for (j = 0; j < f->slice_count; j++) {
778  FFV1Context *fs = f->slice_context[j];
779  fs->ac = f->ac;
780  fs->packed_at_lsb = f->packed_at_lsb;
781 
782  fs->slice_damaged = 0;
783 
784  if (f->version == 2) {
785  int sx = get_symbol(c, state, 0);
786  int sy = get_symbol(c, state, 0);
787  int sw = get_symbol(c, state, 0) + 1U;
788  int sh = get_symbol(c, state, 0) + 1U;
789 
790  if (sx < 0 || sy < 0 || sw <= 0 || sh <= 0)
791  return AVERROR_INVALIDDATA;
792  if (sx > f->num_h_slices - sw || sy > f->num_v_slices - sh)
793  return AVERROR_INVALIDDATA;
794 
795  fs->slice_x = sx * (int64_t)f->width / f->num_h_slices;
796  fs->slice_y = sy * (int64_t)f->height / f->num_v_slices;
797  fs->slice_width = (sx + sw) * (int64_t)f->width / f->num_h_slices - fs->slice_x;
798  fs->slice_height = (sy + sh) * (int64_t)f->height / f->num_v_slices - fs->slice_y;
799 
800  av_assert0((unsigned)fs->slice_width <= f->width &&
801  (unsigned)fs->slice_height <= f->height);
802  av_assert0 ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width <= f->width
803  && (unsigned)fs->slice_y + (uint64_t)fs->slice_height <= f->height);
804  }
805 
806  for (i = 0; i < f->plane_count; i++) {
807  PlaneContext *const p = &fs->plane[i];
808 
809  if (f->version == 2) {
810  int idx = get_symbol(c, state, 0);
811  if (idx >= (unsigned)f->quant_table_count) {
812  av_log(f->avctx, AV_LOG_ERROR,
813  "quant_table_index out of range\n");
814  return AVERROR_INVALIDDATA;
815  }
816  p->quant_table_index = idx;
817  memcpy(p->quant_table, f->quant_tables[idx],
818  sizeof(p->quant_table));
819  context_count = f->context_count[idx];
820  } else {
821  memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
822  }
823 
824  if (f->version <= 2) {
825  av_assert0(context_count >= 0);
826  if (p->context_count < context_count) {
827  av_freep(&p->state);
828  av_freep(&p->vlc_state);
829  }
830  p->context_count = context_count;
831  }
832  }
833  }
834  return 0;
835 }
836 
837 static av_cold int decode_init(AVCodecContext *avctx)
838 {
839  FFV1Context *f = avctx->priv_data;
840  int ret;
841 
842  if ((ret = ff_ffv1_common_init(avctx)) < 0)
843  return ret;
844 
845  f->picture.f = av_frame_alloc();
846  f->last_picture.f = av_frame_alloc();
847  if (!f->picture.f || !f->last_picture.f)
848  return AVERROR(ENOMEM);
849 
850  if (avctx->extradata_size > 0 && (ret = read_extra_header(f)) < 0)
851  return ret;
852 
853  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
854  return ret;
855 
856  return 0;
857 }
858 
859 static int decode_frame(AVCodecContext *avctx, AVFrame *rframe,
860  int *got_frame, AVPacket *avpkt)
861 {
862  uint8_t *buf = avpkt->data;
863  int buf_size = avpkt->size;
864  FFV1Context *f = avctx->priv_data;
865  RangeCoder *const c = &f->slice_context[0]->c;
866  int i, ret;
867  uint8_t keystate = 128;
868  uint8_t *buf_p;
869  AVFrame *p;
870 
871  if (f->last_picture.f)
872  ff_thread_release_ext_buffer(avctx, &f->last_picture);
873  FFSWAP(ThreadFrame, f->picture, f->last_picture);
874 
875  f->cur = p = f->picture.f;
876 
877  if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
878  /* we have interlaced material flagged in container */
879  p->interlaced_frame = 1;
880  if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
881  p->top_field_first = 1;
882  }
883 
884  f->avctx = avctx;
885  ff_init_range_decoder(c, buf, buf_size);
886  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
887 
888  p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
889  if (get_rac(c, &keystate)) {
890  p->key_frame = 1;
891  f->key_frame_ok = 0;
892  if ((ret = read_header(f)) < 0)
893  return ret;
894  f->key_frame_ok = 1;
895  } else {
896  if (!f->key_frame_ok) {
897  av_log(avctx, AV_LOG_ERROR,
898  "Cannot decode non-keyframe without valid keyframe\n");
899  return AVERROR_INVALIDDATA;
900  }
901  p->key_frame = 0;
902  }
903 
904  if (f->ac != AC_GOLOMB_RICE) {
905  if (buf_size < avctx->width * avctx->height / (128*8))
906  return AVERROR_INVALIDDATA;
907  } else {
908  int w = avctx->width;
909  int s = 1 + w / (1<<23);
910 
911  w /= s;
912 
913  for (i = 0; w > (1<<ff_log2_run[i]); i++)
914  w -= ff_log2_run[i];
915  if (buf_size < (avctx->height + i + 6) / 8 * s)
916  return AVERROR_INVALIDDATA;
917  }
918 
919  ret = ff_thread_get_ext_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF);
920  if (ret < 0)
921  return ret;
922 
923  if (avctx->debug & FF_DEBUG_PICT_INFO)
924  av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
925  f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
926 
927  ff_thread_finish_setup(avctx);
928 
929  buf_p = buf + buf_size;
930  for (i = f->slice_count - 1; i >= 0; i--) {
931  FFV1Context *fs = f->slice_context[i];
932  int trailer = 3 + 5*!!f->ec;
933  int v;
934 
935  if (i || f->version > 2) {
936  if (trailer > buf_p - buf) v = INT_MAX;
937  else v = AV_RB24(buf_p-trailer) + trailer;
938  } else v = buf_p - c->bytestream_start;
939  if (buf_p - c->bytestream_start < v) {
940  av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
941  ff_thread_report_progress(&f->picture, INT_MAX, 0);
942  return AVERROR_INVALIDDATA;
943  }
944  buf_p -= v;
945 
946  if (f->ec) {
947  unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
948  if (crc) {
949  int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
950  av_log(f->avctx, AV_LOG_ERROR, "slice CRC mismatch %X!", crc);
951  if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
952  av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
953  } else if (ts != AV_NOPTS_VALUE) {
954  av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
955  } else {
956  av_log(f->avctx, AV_LOG_ERROR, "\n");
957  }
958  fs->slice_damaged = 1;
959  }
960  if (avctx->debug & FF_DEBUG_PICT_INFO) {
961  av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08"PRIX32"\n", i, AV_RB32(buf_p + v - 4));
962  }
963  }
964 
965  if (i) {
966  ff_init_range_decoder(&fs->c, buf_p, v);
967  } else
968  fs->c.bytestream_end = buf_p + v;
969 
970  fs->avctx = avctx;
971  }
972 
973  avctx->execute(avctx,
974  decode_slice,
975  &f->slice_context[0],
976  NULL,
977  f->slice_count,
978  sizeof(void*));
979 
980  for (i = f->slice_count - 1; i >= 0; i--) {
981  FFV1Context *fs = f->slice_context[i];
982  int j;
983  if (fs->slice_damaged && f->last_picture.f->data[0]) {
984  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
985  const uint8_t *src[4];
986  uint8_t *dst[4];
987  ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
988  for (j = 0; j < desc->nb_components; j++) {
989  int pixshift = desc->comp[j].depth > 8;
990  int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
991  int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
992  dst[j] = p->data[j] + p->linesize[j] *
993  (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
994  src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
995  (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
996 
997  }
998  if (desc->flags & AV_PIX_FMT_FLAG_PAL) {
999  dst[1] = p->data[1];
1000  src[1] = f->last_picture.f->data[1];
1001  }
1002  av_image_copy(dst, p->linesize, src,
1003  f->last_picture.f->linesize,
1004  avctx->pix_fmt,
1005  fs->slice_width,
1006  fs->slice_height);
1007  }
1008  }
1009  ff_thread_report_progress(&f->picture, INT_MAX, 0);
1010 
1011  if (f->last_picture.f)
1012  ff_thread_release_ext_buffer(avctx, &f->last_picture);
1013  if ((ret = av_frame_ref(rframe, f->picture.f)) < 0)
1014  return ret;
1015 
1016  *got_frame = 1;
1017 
1018  return buf_size;
1019 }
1020 
1021 static void copy_fields(FFV1Context *fsdst, const FFV1Context *fssrc,
1022  const FFV1Context *fsrc)
1023 {
1024  fsdst->version = fsrc->version;
1025  fsdst->micro_version = fsrc->micro_version;
1026  fsdst->chroma_planes = fsrc->chroma_planes;
1027  fsdst->chroma_h_shift = fsrc->chroma_h_shift;
1028  fsdst->chroma_v_shift = fsrc->chroma_v_shift;
1029  fsdst->transparency = fsrc->transparency;
1030  fsdst->plane_count = fsrc->plane_count;
1031  fsdst->ac = fsrc->ac;
1032  fsdst->colorspace = fsrc->colorspace;
1033 
1034  fsdst->ec = fsrc->ec;
1035  fsdst->intra = fsrc->intra;
1036  fsdst->slice_damaged = fssrc->slice_damaged;
1037  fsdst->key_frame_ok = fsrc->key_frame_ok;
1038 
1039  fsdst->packed_at_lsb = fsrc->packed_at_lsb;
1040  fsdst->slice_count = fsrc->slice_count;
1041  if (fsrc->version<3){
1042  fsdst->slice_x = fssrc->slice_x;
1043  fsdst->slice_y = fssrc->slice_y;
1044  fsdst->slice_width = fssrc->slice_width;
1045  fsdst->slice_height = fssrc->slice_height;
1046  }
1047 }
1048 
1049 #if HAVE_THREADS
1050 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1051 {
1052  FFV1Context *fsrc = src->priv_data;
1053  FFV1Context *fdst = dst->priv_data;
1054  int i, ret;
1055 
1056  if (dst == src)
1057  return 0;
1058 
1059  {
1060  ThreadFrame picture = fdst->picture, last_picture = fdst->last_picture;
1061  uint8_t (*initial_states[MAX_QUANT_TABLES])[32];
1062  struct FFV1Context *slice_context[MAX_SLICES];
1063  memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1064  memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1065 
1066  memcpy(fdst, fsrc, sizeof(*fdst));
1067  memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1068  memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1069  fdst->picture = picture;
1070  fdst->last_picture = last_picture;
1071  for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1072  FFV1Context *fssrc = fsrc->slice_context[i];
1073  FFV1Context *fsdst = fdst->slice_context[i];
1074  copy_fields(fsdst, fssrc, fsrc);
1075  }
1076  av_assert0(!fdst->plane[0].state);
1077  av_assert0(!fdst->sample_buffer);
1078  }
1079 
1080  av_assert1(fdst->max_slice_count == fsrc->max_slice_count);
1081 
1082 
1083  ff_thread_release_ext_buffer(dst, &fdst->picture);
1084  if (fsrc->picture.f->data[0]) {
1085  if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1086  return ret;
1087  }
1088 
1089  fdst->fsrc = fsrc;
1090 
1091  return 0;
1092 }
1093 #endif
1094 
1095 static av_cold int ffv1_decode_close(AVCodecContext *avctx)
1096 {
1097  FFV1Context *const s = avctx->priv_data;
1098 
1099  if (s->picture.f) {
1100  ff_thread_release_ext_buffer(avctx, &s->picture);
1101  av_frame_free(&s->picture.f);
1102  }
1103 
1104  if (s->last_picture.f) {
1105  ff_thread_release_ext_buffer(avctx, &s->last_picture);
1106  av_frame_free(&s->last_picture.f);
1107  }
1108  return ff_ffv1_close(avctx);
1109 }
1110 
1111 const FFCodec ff_ffv1_decoder = {
1112  .p.name = "ffv1",
1113  CODEC_LONG_NAME("FFmpeg video codec #1"),
1114  .p.type = AVMEDIA_TYPE_VIDEO,
1115  .p.id = AV_CODEC_ID_FFV1,
1116  .priv_data_size = sizeof(FFV1Context),
1117  .init = decode_init,
1118  .close = ffv1_decode_close,
1119  FF_CODEC_DECODE_CB(decode_frame),
1120  UPDATE_THREAD_CONTEXT(update_thread_context),
1121  .p.capabilities = AV_CODEC_CAP_DR1 |
1122  AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS,
1123  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP |
1124  FF_CODEC_CAP_ALLOCATE_PROGRESS,
1125 };
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:502
read_extra_header
static int read_extra_header(FFV1Context *f)
Definition: ffv1dec.c:423
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:481
FFV1Context::chroma_v_shift
int chroma_v_shift
Definition: ffv1.h:85
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
FFV1Context::key_frame_ok
int key_frame_ok
Definition: ffv1.h:114
AV_FIELD_PROGRESSIVE
@ AV_FIELD_PROGRESSIVE
Definition: codec_par.h:40
update_vlc_state
static void update_vlc_state(VlcState *const state, const int v)
Definition: ffv1.h:157
FF_CODEC_CAP_INIT_CLEANUP
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: codec_internal.h:42
get_bits_left
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:664
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
decode_slice
static int decode_slice(AVCodecContext *c, void *arg)
Definition: ffv1dec.c:255
opt.h
AV_PIX_FMT_YA8
@ AV_PIX_FMT_YA8
8 bits gray, 8 bits alpha
Definition: pixfmt.h:133
ff_thread_release_ext_buffer
void ff_thread_release_ext_buffer(AVCodecContext *avctx, ThreadFrame *f)
Unref a ThreadFrame.
Definition: pthread_frame.c:978
is_input_end
static int is_input_end(FFV1Context *s)
Definition: ffv1dec.c:97
FFV1Context::context_count
int context_count[MAX_QUANT_TABLES]
Definition: ffv1.h:101
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2888
MAX_OVERREAD
#define MAX_OVERREAD
Definition: lagarithrac.h:50
FFV1Context::ec
int ec
Definition: ffv1.h:111
FFV1Context::gb
GetBitContext gb
Definition: ffv1.h:77
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:103
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:494
get_sr_golomb
static int get_sr_golomb(GetBitContext *gb, int k, int limit, int esc_len)
read signed golomb rice code (ffv1).
Definition: golomb.h:529
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:330
pixdesc.h
ff_ffv1_common_init
av_cold int ff_ffv1_common_init(AVCodecContext *avctx)
Definition: ffv1.c:36
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:501
w
uint8_t w
Definition: llviddspenc.c:38
FFV1Context::last_picture
ThreadFrame last_picture
Definition: ffv1.h:90
AVPacket::data
uint8_t * data
Definition: packet.h:374
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:496
AVCodecContext::field_order
enum AVFieldOrder field_order
Field order.
Definition: avcodec.h:1035
FFV1Context::slice_x
int slice_x
Definition: ffv1.h:130
AVFrame::top_field_first
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:502
last_picture
enum AVPictureType last_picture
Definition: movenc.c:69
rangecoder.h
AVComponentDescriptor::step
int step
Number of elements between 2 horizontally consecutive pixels.
Definition: pixdesc.h:40
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:459
PlaneContext::state
uint8_t(* state)[CONTEXT_SIZE]
Definition: ffv1.h:66
FFCodec
Definition: codec_internal.h:127
FFV1Context::num_h_slices
int num_h_slices
Definition: ffv1.h:127
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
FFV1Context::slice_context
struct FFV1Context * slice_context[MAX_SLICES]
Definition: ffv1.h:123
read_quant_table
static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
Definition: ffv1dec.c:378
AC_RANGE_CUSTOM_TAB
#define AC_RANGE_CUSTOM_TAB
Definition: ffv1.h:52
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:497
init_get_bits
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:493
thread.h
ff_thread_await_progress
the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before ff_thread_await_progress() has been called on them. reget_buffer() and buffer age optimizations no longer work. *The contents of buffers must not be written to after ff_thread_report_progress() has been called on them. This includes draw_edges(). Porting codecs to frame threading
ThreadFrame::f
AVFrame * f
Definition: threadframe.h:28
FFV1Context::chroma_h_shift
int chroma_h_shift
Definition: ffv1.h:85
FF_DEBUG_PICT_INFO
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:1363
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:439
decode_line
static av_always_inline int RENAME() decode_line(FFV1Context *s, int w, TYPE *sample[2], int plane_index, int bits)
Definition: ffv1dec_template.c:25
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:351
crc.h
golomb.h
exp golomb vlc stuff
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:493
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:131
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:477
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:475
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:503
ffv1_decode_close
static av_cold int ffv1_decode_close(AVCodecContext *avctx)
Definition: ffv1dec.c:1095
GetBitContext
Definition: get_bits.h:107
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:457
AVFrame::key_frame
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:422
av_noinline
#define av_noinline
Definition: attributes.h:72
CONTEXT_SIZE
#define CONTEXT_SIZE
Definition: ffv1.h:45
scale
static av_always_inline float scale(float x, float s)
Definition: vf_v360.c:1389
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:443
get_symbol_inline
static av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state, int is_signed)
Definition: ffv1dec.c:43
FFV1Context::chroma_planes
int chroma_planes
Definition: ffv1.h:84
PlaneContext::context_count
int context_count
Definition: ffv1.h:65
AVRational::num
int num
Numerator.
Definition: rational.h:59
ff_ffv1_clear_slice_state
void ff_ffv1_clear_slice_state(const FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:163
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:91
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:462
avassert.h
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:471
ff_thread_report_progress
void ff_thread_report_progress(ThreadFrame *f, int n, int field)
Notify later decoding threads when part of their reference picture is ready.
Definition: pthread_frame.c:548
FFV1Context::bits_per_raw_sample
int bits_per_raw_sample
Definition: ffv1.h:117
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:479
AVCodecContext::extradata_size
int extradata_size
Definition: avcodec.h:528
width
#define width
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:306
s
#define s(width, name)
Definition: cbs_vp9.c:256
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:480
FFV1Context::slice_count
int slice_count
Definition: ffv1.h:124
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:472
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:50
AV_GET_BUFFER_FLAG_REF
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:404
decode_frame
static int decode_frame(AVCodecContext *avctx, AVFrame *rframe, int *got_frame, AVPacket *avpkt)
Definition: ffv1dec.c:859
av_q2d
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
FFV1Context::plane
PlaneContext plane[MAX_PLANES]
Definition: ffv1.h:98
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts_bsf.c:365
FFV1Context::max_slice_count
int max_slice_count
Definition: ffv1.h:125
FFV1Context::slice_damaged
int slice_damaged
Definition: ffv1.h:113
bits
uint8_t bits
Definition: vp3data.h:128
FFV1Context::intra
int intra
Definition: ffv1.h:112
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
FFV1Context::fsrc
struct FFV1Context * fsrc
Definition: ffv1.h:91
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:456
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
read_quant_tables
static int read_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256])
Definition: ffv1dec.c:405
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:470
get_bits.h
fold
static av_always_inline int fold(int diff, int bits)
Definition: ffv1.h:146
FFV1Context::ac
int ac
1=range coder <-> 0=golomb rice
Definition: ffv1.h:96
get_vlc_symbol
static int get_vlc_symbol(GetBitContext *gb, VlcState *const state, int bits)
Definition: ffv1dec.c:72
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
FFV1Context::plane_count
int plane_count
Definition: ffv1.h:95
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:272
ff_thread_ref_frame
int ff_thread_ref_frame(ThreadFrame *dst, const ThreadFrame *src)
Definition: utils.c:896
arg
const char * arg
Definition: jacosubdec.c:67
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:440
AV_CODEC_CAP_FRAME_THREADS
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: codec.h:107
threadframe.h
FFV1Context::slice_height
int slice_height
Definition: ffv1.h:129
quant_table
static const int16_t quant_table[64]
Definition: intrax8.c:522
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:478
read_header
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:545
get_symbol
static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
Definition: ffv1dec.c:67
NULL
#define NULL
Definition: coverity.c:32
PlaneContext::vlc_state
VlcState * vlc_state
Definition: ffv1.h:67
AC_GOLOMB_RICE
#define AC_GOLOMB_RICE
Definition: ffv1.h:50
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:64
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:258
FFV1Context::num_v_slices
int num_v_slices
Definition: ffv1.h:126
FFV1Context::colorspace
int colorspace
Definition: ffv1.h:105
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
ff_ffv1_decoder
const FFCodec ff_ffv1_decoder
Definition: ffv1dec.c:1111
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:461
mathops.h
PlaneContext
Definition: ffv1.h:62
UPDATE_THREAD_CONTEXT
#define UPDATE_THREAD_CONTEXT(func)
Definition: codec_internal.h:281
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:460
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:474
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
VlcState
Definition: ffv1.h:55
ff_dlog
#define ff_dlog(a,...)
Definition: tableprint_vlc.h:28
FFV1Context::slice_width
int slice_width
Definition: ffv1.h:128
ff_init_range_decoder
av_cold void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf, int buf_size)
Definition: rangecoder.c:53
AV_CODEC_ID_FFV1
@ AV_CODEC_ID_FFV1
Definition: codec_id.h:85
f
f
Definition: af_crystalizer.c:122
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:427
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
AVPacket::size
int size
Definition: packet.h:375
av_frame_ref
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
Definition: frame.c:352
codec_internal.h
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:464
ff_ffv1_close
av_cold int ff_ffv1_close(AVCodecContext *avctx)
Definition: ffv1.c:191
AVCodecContext::pkt_timebase
AVRational pkt_timebase
Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
Definition: avcodec.h:1776
sample
#define sample
Definition: flacdsp_template.c:44
FFV1Context::picture
ThreadFrame picture
Definition: ffv1.h:90
size
int size
Definition: twinvq_data.h:10344
ff_build_rac_states
void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
Definition: rangecoder.c:68
FF_CODEC_CAP_ALLOCATE_PROGRESS
#define FF_CODEC_CAP_ALLOCATE_PROGRESS
Definition: codec_internal.h:69
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
AV_RB32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:96
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:466
FFV1Context::sample_buffer
int16_t * sample_buffer
Definition: ffv1.h:106
AVPacket::dts
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:373
height
#define height
AV_PIX_FMT_RGB32
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:432
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:167
av_crc_get_table
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:374
AV_FIELD_TT
@ AV_FIELD_TT
Top coded_first, top displayed first.
Definition: codec_par.h:41
AV_CODEC_CAP_SLICE_THREADS
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: codec.h:111
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:498
PlaneContext::quant_table_index
int quant_table_index
Definition: ffv1.h:64
FFV1Context::initial_states
uint8_t(*[MAX_QUANT_TABLES] initial_states)[32]
Definition: ffv1.h:103
AVFrame::interlaced_frame
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:497
decode_plane
static int decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index, int pixel_stride)
Definition: ffv1dec.c:120
copy_fields
static void copy_fields(FFV1Context *fsdst, const FFV1Context *fssrc, const FFV1Context *fsrc)
Definition: ffv1dec.c:1021
ff_ffv1_init_slice_state
av_cold int ff_ffv1_init_slice_state(const FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:56
state
static struct @346 state
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:367
av_flatten
#define av_flatten
Definition: attributes.h:96
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:476
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:31
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
FFV1Context::slice_y
int slice_y
Definition: ffv1.h:131
ffv1.h
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:191
update_thread_context
the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before as well as code calling up to before the decode process starts Call have update_thread_context() run it in the next thread. Add AV_CODEC_CAP_FRAME_THREADS to the codec capabilities. There will be very little speed gain at this point but it should work. If there are inter-frame dependencies
len
int len
Definition: vorbis_enc_data.h:426
get_rac
static int get_rac(RangeCoder *c, uint8_t *const state)
Definition: rangecoder.h:127
AV_CRC_32_IEEE
@ AV_CRC_32_IEEE
Definition: crc.h:52
AVCodecContext::height
int height
Definition: avcodec.h:598
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:635
ff_thread_get_ext_buffer
int ff_thread_get_ext_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around ff_get_buffer() for frame-multithreaded codecs.
Definition: pthread_frame.c:936
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:458
MAX_CONTEXT_INPUTS
#define MAX_CONTEXT_INPUTS
Definition: ffv1.h:48
FFV1Context::packed_at_lsb
int packed_at_lsb
Definition: ffv1.h:118
avcodec.h
stride
#define stride
Definition: h264pred_template.c:537
FFV1Context::avctx
AVCodecContext * avctx
Definition: ffv1.h:75
ret
ret
Definition: filter_design.txt:187
pred
static const float pred[4]
Definition: siprdata.h:259
FFSWAP
#define FFSWAP(type, a, b)
Definition: macros.h:52
AV_PIX_FMT_0RGB32
#define AV_PIX_FMT_0RGB32
Definition: pixfmt.h:436
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:495
ff_thread_finish_setup
the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before as well as code calling up to before the decode process starts Call ff_thread_finish_setup() afterwards. If some code can 't be moved
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:463
U
#define U(x)
Definition: vpx_arith.h:37
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:468
ff_ffv1_allocate_initial_states
int ff_ffv1_allocate_initial_states(FFV1Context *f)
Definition: ffv1.c:148
decode_rgb_frame
static int RENAME() decode_rgb_frame(FFV1Context *s, uint8_t *src[4], int w, int h, int stride[4])
Definition: ffv1dec_template.c:130
AVCodecContext
main external API structure.
Definition: avcodec.h:426
planes
static const struct @347 planes[]
MAX_SLICES
#define MAX_SLICES
Definition: dxva2_hevc.c:31
ThreadFrame
Definition: threadframe.h:27
AVCodecContext::execute
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:1536
av_image_copy
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:422
decode_init
static av_cold int decode_init(AVCodecContext *avctx)
Definition: ffv1dec.c:837
av_crc
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:392
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:105
temp
else temp
Definition: vf_mcdeint.c:248
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVCodecContext::debug
int debug
debug
Definition: avcodec.h:1362
desc
const char * desc
Definition: libsvtav1.c:83
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
MAX_QUANT_TABLES
#define MAX_QUANT_TABLES
Definition: ffv1.h:47
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
FFV1Context
Definition: ffv1.h:73
av_free
#define av_free(p)
Definition: tableprint_vlc.h:33
FFV1Context::transparency
int transparency
Definition: ffv1.h:86
AVPacket
This structure stores compressed data.
Definition: packet.h:351
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:453
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
AV_FIELD_TB
@ AV_FIELD_TB
Top coded first, bottom displayed first.
Definition: codec_par.h:43
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
ffv1dec_template.c
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:598
ff_ffv1_init_slice_contexts
av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
Definition: ffv1.c:106
ff_log2_run
const uint8_t ff_log2_run[41]
Definition: mathtables.c:116
imgutils.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:375
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
FFV1Context::micro_version
int micro_version
Definition: ffv1.h:82
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:465
h
h
Definition: vp9dsp_template.c:2038
RangeCoder
Definition: mss3.c:62
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:469
av_image_check_sar
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:323
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:441
PlaneContext::quant_table
int16_t quant_table[MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:63
AV_RB24
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:97
decode_slice_header
static int decode_slice_header(const FFV1Context *f, FFV1Context *fs)
Definition: ffv1dec.c:166
AV_PIX_FMT_FLAG_PAL
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:120
FFV1Context::version
int version
Definition: ffv1.h:81
AV_PIX_FMT_YUVA422P
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:166
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:467
Generated on Mon Mar 20 2023 19:21:20 for FFmpeg by   doxygen 1.8.17