FFmpeg
ffv1dec.c
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1 /*
2  * FFV1 decoder
3  *
4  * Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * FF Video Codec 1 (a lossless codec) decoder
26  */
27 
28 #include "libavutil/avassert.h"
29 #include "libavutil/crc.h"
30 #include "libavutil/mem.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 "progressframe.h"
41 #include "refstruct.h"
42 #include "thread.h"
43 
44 static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state,
45  int is_signed)
46 {
47  if (get_rac(c, state + 0))
48  return 0;
49  else {
50  int e;
51  unsigned a;
52  e = 0;
53  while (get_rac(c, state + 1 + FFMIN(e, 9))) { // 1..10
54  e++;
55  if (e > 31)
56  return AVERROR_INVALIDDATA;
57  }
58 
59  a = 1;
60  for (int i = e - 1; i >= 0; i--)
61  a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
62 
63  e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
64  return (a ^ e) - e;
65  }
66 }
67 
68 static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
69 {
70  return get_symbol_inline(c, state, is_signed);
71 }
72 
73 static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
74  int bits)
75 {
76  int k, i, v, ret;
77 
78  i = state->count;
79  k = 0;
80  while (i < state->error_sum) { // FIXME: optimize
81  k++;
82  i += i;
83  }
84 
85  v = get_sr_golomb(gb, k, 12, bits);
86  ff_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
87  v, state->bias, state->error_sum, state->drift, state->count, k);
88 
89  v ^= ((2 * state->drift + state->count) >> 31);
90 
91  ret = fold(v + state->bias, bits);
92 
93  update_vlc_state(state, v);
94 
95  return ret;
96 }
97 
98 static int is_input_end(RangeCoder *c, GetBitContext *gb, int ac)
99 {
100  if (ac != AC_GOLOMB_RICE) {
101  if (c->overread > MAX_OVERREAD)
102  return AVERROR_INVALIDDATA;
103  } else {
104  if (get_bits_left(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 *f, FFV1SliceContext *sc,
121  GetBitContext *gb,
122  uint8_t *src, int w, int h, int stride, int plane_index,
123  int pixel_stride)
124 {
125  const int ac = f->ac;
126  int x, y;
127  int16_t *sample[2];
128  sample[0] = sc->sample_buffer + 3;
129  sample[1] = sc->sample_buffer + w + 6 + 3;
130 
131  sc->run_index = 0;
132 
133  memset(sc->sample_buffer, 0, 2 * (w + 6) * sizeof(*sc->sample_buffer));
134 
135  for (y = 0; y < h; y++) {
136  int16_t *temp = sample[0]; // FIXME: try a normal buffer
137 
138  sample[0] = sample[1];
139  sample[1] = temp;
140 
141  sample[1][-1] = sample[0][0];
142  sample[0][w] = sample[0][w - 1];
143 
144  if (f->avctx->bits_per_raw_sample <= 8) {
145  int ret = decode_line(f, sc, gb, w, sample, plane_index, 8, ac);
146  if (ret < 0)
147  return ret;
148  for (x = 0; x < w; x++)
149  src[x*pixel_stride + stride * y] = sample[1][x];
150  } else {
151  int ret = decode_line(f, sc, gb, w, sample, plane_index, f->avctx->bits_per_raw_sample, ac);
152  if (ret < 0)
153  return ret;
154  if (f->packed_at_lsb) {
155  for (x = 0; x < w; x++) {
156  ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x];
157  }
158  } else {
159  for (x = 0; x < w; x++) {
160  ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x] << (16 - f->avctx->bits_per_raw_sample) | ((uint16_t **)sample)[1][x] >> (2 * f->avctx->bits_per_raw_sample - 16);
161  }
162  }
163  }
164  }
165  return 0;
166 }
167 
168 static int decode_slice_header(const FFV1Context *f,
169  FFV1SliceContext *sc, AVFrame *frame)
170 {
171  RangeCoder *c = &sc->c;
172  uint8_t state[CONTEXT_SIZE];
173  unsigned ps, context_count;
174  int sx, sy, sw, sh;
175 
176  memset(state, 128, sizeof(state));
177  sx = get_symbol(c, state, 0);
178  sy = get_symbol(c, state, 0);
179  sw = get_symbol(c, state, 0) + 1U;
180  sh = get_symbol(c, state, 0) + 1U;
181 
182  av_assert0(f->version > 2);
183 
184 
185  if (sx < 0 || sy < 0 || sw <= 0 || sh <= 0)
186  return AVERROR_INVALIDDATA;
187  if (sx > f->num_h_slices - sw || sy > f->num_v_slices - sh)
188  return AVERROR_INVALIDDATA;
189 
190  sc->slice_x = sx * (int64_t)f->width / f->num_h_slices;
191  sc->slice_y = sy * (int64_t)f->height / f->num_v_slices;
192  sc->slice_width = (sx + sw) * (int64_t)f->width / f->num_h_slices - sc->slice_x;
193  sc->slice_height = (sy + sh) * (int64_t)f->height / f->num_v_slices - sc->slice_y;
194 
195  av_assert0((unsigned)sc->slice_width <= f->width &&
196  (unsigned)sc->slice_height <= f->height);
197  av_assert0 ( (unsigned)sc->slice_x + (uint64_t)sc->slice_width <= f->width
198  && (unsigned)sc->slice_y + (uint64_t)sc->slice_height <= f->height);
199 
200  if (f->ac == AC_GOLOMB_RICE && sc->slice_width >= (1<<23))
201  return AVERROR_INVALIDDATA;
202 
203  for (unsigned i = 0; i < f->plane_count; i++) {
204  PlaneContext * const p = &sc->plane[i];
205  int idx = get_symbol(c, state, 0);
206  if (idx >= (unsigned)f->quant_table_count) {
207  av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
208  return -1;
209  }
210  p->quant_table_index = idx;
211  context_count = f->context_count[idx];
212 
213  if (p->context_count < context_count) {
214  av_freep(&p->state);
215  av_freep(&p->vlc_state);
216  }
217  p->context_count = context_count;
218  }
219 
220  ps = get_symbol(c, state, 0);
221  if (ps == 1) {
222  frame->flags |= AV_FRAME_FLAG_INTERLACED;
223  frame->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
224  } else if (ps == 2) {
225  frame->flags |= AV_FRAME_FLAG_INTERLACED;
226  frame->flags &= ~AV_FRAME_FLAG_TOP_FIELD_FIRST;
227  } else if (ps == 3) {
228  frame->flags &= ~AV_FRAME_FLAG_INTERLACED;
229  }
230  frame->sample_aspect_ratio.num = get_symbol(c, state, 0);
231  frame->sample_aspect_ratio.den = get_symbol(c, state, 0);
232 
233  if (av_image_check_sar(f->width, f->height,
234  frame->sample_aspect_ratio) < 0) {
235  av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
236  frame->sample_aspect_ratio.num,
237  frame->sample_aspect_ratio.den);
238  frame->sample_aspect_ratio = (AVRational){ 0, 1 };
239  }
240 
241  if (f->version > 3) {
242  sc->slice_reset_contexts = get_rac(c, state);
243  sc->slice_coding_mode = get_symbol(c, state, 0);
244  if (sc->slice_coding_mode != 1) {
245  sc->slice_rct_by_coef = get_symbol(c, state, 0);
246  sc->slice_rct_ry_coef = get_symbol(c, state, 0);
247  if ((uint64_t)sc->slice_rct_by_coef + (uint64_t)sc->slice_rct_ry_coef > 4) {
248  av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
249  return AVERROR_INVALIDDATA;
250  }
251  }
252  }
253 
254  return 0;
255 }
256 
257 static void slice_set_damaged(FFV1Context *f, FFV1SliceContext *sc)
258 {
259  sc->slice_damaged = 1;
260 
261  // only set this for frame threading, as for slice threading its value is
262  // not used and setting it would be a race
263  if (f->avctx->active_thread_type & FF_THREAD_FRAME)
264  f->frame_damaged = 1;
265 }
266 
267 static int decode_slice(AVCodecContext *c, void *arg)
268 {
269  FFV1Context *f = c->priv_data;
270  FFV1SliceContext *sc = arg;
271  int width, height, x, y, ret;
272  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
273  AVFrame * const p = f->picture.f;
274  const int si = sc - f->slices;
275  GetBitContext gb;
276 
277  if (!(p->flags & AV_FRAME_FLAG_KEY) && f->last_picture.f)
278  ff_progress_frame_await(&f->last_picture, si);
279 
280  if (f->slice_damaged[si])
281  slice_set_damaged(f, sc);
282 
283  sc->slice_rct_by_coef = 1;
284  sc->slice_rct_ry_coef = 1;
285 
286  if (f->version > 2) {
287  if (ff_ffv1_init_slice_state(f, sc) < 0)
288  return AVERROR(ENOMEM);
289  if (decode_slice_header(f, sc, p) < 0) {
290  sc->slice_x = sc->slice_y = sc->slice_height = sc->slice_width = 0;
291  slice_set_damaged(f, sc);
292  return AVERROR_INVALIDDATA;
293  }
294  }
295  if ((ret = ff_ffv1_init_slice_state(f, sc)) < 0)
296  return ret;
297  if ((p->flags & AV_FRAME_FLAG_KEY) || sc->slice_reset_contexts) {
298  ff_ffv1_clear_slice_state(f, sc);
299  } else if (sc->slice_damaged) {
300  return AVERROR_INVALIDDATA;
301  }
302 
303  width = sc->slice_width;
304  height = sc->slice_height;
305  x = sc->slice_x;
306  y = sc->slice_y;
307 
308  if (f->ac == AC_GOLOMB_RICE) {
309  if (f->version == 3 && f->micro_version > 1 || f->version > 3)
310  get_rac(&sc->c, (uint8_t[]) { 129 });
311  sc->ac_byte_count = f->version > 2 || (!x && !y) ? sc->c.bytestream - sc->c.bytestream_start - 1 : 0;
312  init_get_bits(&gb,
313  sc->c.bytestream_start + sc->ac_byte_count,
314  (sc->c.bytestream_end - sc->c.bytestream_start - sc->ac_byte_count) * 8);
315  }
316 
317  av_assert1(width && height);
318  if (f->colorspace == 0 && (f->chroma_planes || !f->transparency)) {
319  const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
320  const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
321  const int cx = x >> f->chroma_h_shift;
322  const int cy = y >> f->chroma_v_shift;
323  decode_plane(f, sc, &gb, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
324 
325  if (f->chroma_planes) {
326  decode_plane(f, sc, &gb, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
327  decode_plane(f, sc, &gb, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
328  }
329  if (f->transparency)
330  decode_plane(f, sc, &gb, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], (f->version >= 4 && !f->chroma_planes) ? 1 : 2, 1);
331  } else if (f->colorspace == 0) {
332  decode_plane(f, sc, &gb, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2);
333  decode_plane(f, sc, &gb, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2);
334  } else if (f->use32bit) {
335  uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0],
336  p->data[1] + ps * x + y * p->linesize[1],
337  p->data[2] + ps * x + y * p->linesize[2],
338  p->data[3] + ps * x + y * p->linesize[3] };
339  decode_rgb_frame32(f, sc, &gb, planes, width, height, p->linesize);
340  } else {
341  uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0],
342  p->data[1] + ps * x + y * p->linesize[1],
343  p->data[2] + ps * x + y * p->linesize[2],
344  p->data[3] + ps * x + y * p->linesize[3] };
345  decode_rgb_frame(f, sc, &gb, planes, width, height, p->linesize);
346  }
347  if (f->ac != AC_GOLOMB_RICE && f->version > 2) {
348  int v;
349  get_rac(&sc->c, (uint8_t[]) { 129 });
350  v = sc->c.bytestream_end - sc->c.bytestream - 2 - 5*f->ec;
351  if (v) {
352  av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
353  slice_set_damaged(f, sc);
354  }
355  }
356 
357  if (sc->slice_damaged && (f->avctx->err_recognition & AV_EF_EXPLODE))
358  return AVERROR_INVALIDDATA;
359 
360  if ((c->active_thread_type & FF_THREAD_FRAME) && !f->frame_damaged)
361  ff_progress_frame_report(&f->picture, si);
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;
370  uint8_t state[CONTEXT_SIZE];
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 
393 static int read_quant_tables(RangeCoder *c,
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 
411 static int read_extra_header(FFV1Context *f)
412 {
413  RangeCoder c;
414  uint8_t state[CONTEXT_SIZE];
415  int 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 
422  ff_init_range_decoder(&c, f->avctx->extradata, f->avctx->extradata_size);
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 > 4) {
431  av_log(f->avctx, AV_LOG_ERROR, "unsupported version %d\n",
432  f->version);
433  return AVERROR_PATCHWELCOME;
434  }
435  if (f->version > 2) {
436  c.bytestream_end -= 4;
437  f->micro_version = get_symbol(&c, state, 0);
438  if (f->micro_version < 0)
439  return AVERROR_INVALIDDATA;
440  }
441  f->ac = get_symbol(&c, state, 0);
442 
443  if (f->ac == AC_RANGE_CUSTOM_TAB) {
444  for (int i = 1; i < 256; i++)
445  f->state_transition[i] = get_symbol(&c, state, 1) + c.one_state[i];
446  }
447 
448  f->colorspace = get_symbol(&c, state, 0); //YUV cs type
449  f->avctx->bits_per_raw_sample = get_symbol(&c, state, 0);
450  f->chroma_planes = get_rac(&c, state);
451  f->chroma_h_shift = get_symbol(&c, state, 0);
452  f->chroma_v_shift = get_symbol(&c, state, 0);
453  f->transparency = get_rac(&c, state);
454  f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
455  f->num_h_slices = 1 + get_symbol(&c, state, 0);
456  f->num_v_slices = 1 + get_symbol(&c, state, 0);
457 
458  if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
459  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
460  f->chroma_h_shift, f->chroma_v_shift);
461  return AVERROR_INVALIDDATA;
462  }
463 
464  if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
465  f->num_v_slices > (unsigned)f->height || !f->num_v_slices
466  ) {
467  av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
468  return AVERROR_INVALIDDATA;
469  }
470 
471  if (f->num_h_slices > MAX_SLICES / f->num_v_slices) {
472  av_log(f->avctx, AV_LOG_ERROR, "slice count unsupported\n");
473  return AVERROR_PATCHWELCOME;
474  }
475 
476  f->quant_table_count = get_symbol(&c, state, 0);
477  if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
478  av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
479  f->quant_table_count = 0;
480  return AVERROR_INVALIDDATA;
481  }
482 
483  for (int i = 0; i < f->quant_table_count; i++) {
484  f->context_count[i] = read_quant_tables(&c, f->quant_tables[i]);
485  if (f->context_count[i] < 0) {
486  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
487  return AVERROR_INVALIDDATA;
488  }
489  }
490  if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
491  return ret;
492 
493  for (int i = 0; i < f->quant_table_count; i++)
494  if (get_rac(&c, state)) {
495  for (int j = 0; j < f->context_count[i]; j++)
496  for (int k = 0; k < CONTEXT_SIZE; k++) {
497  int pred = j ? f->initial_states[i][j - 1][k] : 128;
498  f->initial_states[i][j][k] =
499  (pred + get_symbol(&c, state2[k], 1)) & 0xFF;
500  }
501  }
502 
503  if (f->version > 2) {
504  f->ec = get_symbol(&c, state, 0);
505  if (f->micro_version > 2)
506  f->intra = get_symbol(&c, state, 0);
507  }
508 
509  if (f->version > 2) {
510  unsigned v;
511  v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0,
512  f->avctx->extradata, f->avctx->extradata_size);
513  if (v || f->avctx->extradata_size < 4) {
514  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
515  return AVERROR_INVALIDDATA;
516  }
517  crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
518  }
519 
520  if (f->avctx->debug & FF_DEBUG_PICT_INFO)
521  av_log(f->avctx, AV_LOG_DEBUG,
522  "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",
523  f->version, f->micro_version,
524  f->ac,
525  f->colorspace,
526  f->avctx->bits_per_raw_sample,
527  f->chroma_planes, f->chroma_h_shift, f->chroma_v_shift,
528  f->transparency,
529  f->num_h_slices, f->num_v_slices,
530  f->quant_table_count,
531  f->ec,
532  f->intra,
533  crc
534  );
535  return 0;
536 }
537 
538 static int read_header(FFV1Context *f)
539 {
540  uint8_t state[CONTEXT_SIZE];
541  int context_count = -1; //-1 to avoid warning
542  RangeCoder *const c = &f->slices[0].c;
543 
544  memset(state, 128, sizeof(state));
545 
546  if (f->version < 2) {
547  int chroma_planes, chroma_h_shift, chroma_v_shift, transparency, colorspace, bits_per_raw_sample;
548  unsigned v= get_symbol(c, state, 0);
549  if (v >= 2) {
550  av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
551  return AVERROR_INVALIDDATA;
552  }
553  f->version = v;
554  f->ac = get_symbol(c, state, 0);
555 
556  if (f->ac == AC_RANGE_CUSTOM_TAB) {
557  for (int i = 1; i < 256; i++) {
558  int st = get_symbol(c, state, 1) + c->one_state[i];
559  if (st < 1 || st > 255) {
560  av_log(f->avctx, AV_LOG_ERROR, "invalid state transition %d\n", st);
561  return AVERROR_INVALIDDATA;
562  }
563  f->state_transition[i] = st;
564  }
565  }
566 
567  colorspace = get_symbol(c, state, 0); //YUV cs type
568  bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
569  chroma_planes = get_rac(c, state);
570  chroma_h_shift = get_symbol(c, state, 0);
571  chroma_v_shift = get_symbol(c, state, 0);
572  transparency = get_rac(c, state);
573  if (colorspace == 0 && f->avctx->skip_alpha)
574  transparency = 0;
575 
576  if (f->plane_count) {
577  if (colorspace != f->colorspace ||
578  bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
579  chroma_planes != f->chroma_planes ||
580  chroma_h_shift != f->chroma_h_shift ||
581  chroma_v_shift != f->chroma_v_shift ||
582  transparency != f->transparency) {
583  av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
584  return AVERROR_INVALIDDATA;
585  }
586  }
587 
588  if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
589  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
590  chroma_h_shift, chroma_v_shift);
591  return AVERROR_INVALIDDATA;
592  }
593 
594  f->colorspace = colorspace;
595  f->avctx->bits_per_raw_sample = bits_per_raw_sample;
596  f->chroma_planes = chroma_planes;
597  f->chroma_h_shift = chroma_h_shift;
598  f->chroma_v_shift = chroma_v_shift;
599  f->transparency = transparency;
600 
601  f->plane_count = 2 + f->transparency;
602  }
603 
604  if (f->colorspace == 0) {
605  if (!f->transparency && !f->chroma_planes) {
606  if (f->avctx->bits_per_raw_sample <= 8)
607  f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
608  else if (f->avctx->bits_per_raw_sample == 9) {
609  f->packed_at_lsb = 1;
610  f->avctx->pix_fmt = AV_PIX_FMT_GRAY9;
611  } else if (f->avctx->bits_per_raw_sample == 10) {
612  f->packed_at_lsb = 1;
613  f->avctx->pix_fmt = AV_PIX_FMT_GRAY10;
614  } else if (f->avctx->bits_per_raw_sample == 12) {
615  f->packed_at_lsb = 1;
616  f->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
617  } else if (f->avctx->bits_per_raw_sample == 14) {
618  f->packed_at_lsb = 1;
619  f->avctx->pix_fmt = AV_PIX_FMT_GRAY14;
620  } else if (f->avctx->bits_per_raw_sample == 16) {
621  f->packed_at_lsb = 1;
622  f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
623  } else if (f->avctx->bits_per_raw_sample < 16) {
624  f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
625  } else
626  return AVERROR(ENOSYS);
627  } else if (f->transparency && !f->chroma_planes) {
628  if (f->avctx->bits_per_raw_sample <= 8)
629  f->avctx->pix_fmt = AV_PIX_FMT_YA8;
630  else
631  return AVERROR(ENOSYS);
632  } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
633  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
634  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
635  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
636  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
637  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
638  case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
639  case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
640  }
641  } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
642  switch(16*f->chroma_h_shift + f->chroma_v_shift) {
643  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
644  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
645  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
646  }
647  } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
648  f->packed_at_lsb = 1;
649  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
650  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
651  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
652  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
653  }
654  } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
655  f->packed_at_lsb = 1;
656  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
657  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
658  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
659  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
660  }
661  } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
662  f->packed_at_lsb = 1;
663  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
664  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
665  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P10; break;
666  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
667  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
668  }
669  } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
670  f->packed_at_lsb = 1;
671  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
672  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
673  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
674  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
675  }
676  } else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency) {
677  f->packed_at_lsb = 1;
678  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
679  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P12; break;
680  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P12; break;
681  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P12; break;
682  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P12; break;
683  }
684  } else if (f->avctx->bits_per_raw_sample == 12 && f->transparency) {
685  f->packed_at_lsb = 1;
686  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
687  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P12; break;
688  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P12; break;
689  }
690  } else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency) {
691  f->packed_at_lsb = 1;
692  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
693  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P14; break;
694  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P14; break;
695  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P14; break;
696  }
697  } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
698  f->packed_at_lsb = 1;
699  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
700  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
701  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
702  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
703  }
704  } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
705  f->packed_at_lsb = 1;
706  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
707  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
708  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
709  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
710  }
711  }
712  } else if (f->colorspace == 1) {
713  if (f->chroma_h_shift || f->chroma_v_shift) {
714  av_log(f->avctx, AV_LOG_ERROR,
715  "chroma subsampling not supported in this colorspace\n");
716  return AVERROR(ENOSYS);
717  }
718  if ( f->avctx->bits_per_raw_sample <= 8 && !f->transparency)
719  f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
720  else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency)
721  f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
722  else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency)
723  f->avctx->pix_fmt = AV_PIX_FMT_GBRP9;
724  else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency)
725  f->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
726  else if (f->avctx->bits_per_raw_sample == 10 && f->transparency)
727  f->avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
728  else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency)
729  f->avctx->pix_fmt = AV_PIX_FMT_GBRP12;
730  else if (f->avctx->bits_per_raw_sample == 12 && f->transparency)
731  f->avctx->pix_fmt = AV_PIX_FMT_GBRAP12;
732  else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency)
733  f->avctx->pix_fmt = AV_PIX_FMT_GBRP14;
734  else if (f->avctx->bits_per_raw_sample == 14 && f->transparency)
735  f->avctx->pix_fmt = AV_PIX_FMT_GBRAP14;
736  else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency) {
737  f->avctx->pix_fmt = AV_PIX_FMT_GBRP16;
738  f->use32bit = 1;
739  }
740  else if (f->avctx->bits_per_raw_sample == 16 && f->transparency) {
741  f->avctx->pix_fmt = AV_PIX_FMT_GBRAP16;
742  f->use32bit = 1;
743  }
744  } else {
745  av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
746  return AVERROR(ENOSYS);
747  }
748  if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
749  av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
750  return AVERROR(ENOSYS);
751  }
752 
753  ff_dlog(f->avctx, "%d %d %d\n",
754  f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt);
755  if (f->version < 2) {
756  context_count = read_quant_tables(c, f->quant_tables[0]);
757  if (context_count < 0) {
758  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
759  return AVERROR_INVALIDDATA;
760  }
761  f->slice_count = f->max_slice_count;
762  } else if (f->version < 3) {
763  f->slice_count = get_symbol(c, state, 0);
764  } else {
765  const uint8_t *p = c->bytestream_end;
766  for (f->slice_count = 0;
767  f->slice_count < MAX_SLICES && 3 + 5*!!f->ec < p - c->bytestream_start;
768  f->slice_count++) {
769  int trailer = 3 + 5*!!f->ec;
770  int size = AV_RB24(p-trailer);
771  if (size + trailer > p - c->bytestream_start)
772  break;
773  p -= size + trailer;
774  }
775  }
776  if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) {
777  av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count);
778  return AVERROR_INVALIDDATA;
779  }
780 
781  ff_refstruct_unref(&f->slice_damaged);
782  f->slice_damaged = ff_refstruct_allocz(f->slice_count * sizeof(*f->slice_damaged));
783  if (!f->slice_damaged)
784  return AVERROR(ENOMEM);
785 
786  for (int j = 0; j < f->slice_count; j++) {
787  FFV1SliceContext *sc = &f->slices[j];
788 
789  if (f->version == 2) {
790  int sx = get_symbol(c, state, 0);
791  int sy = get_symbol(c, state, 0);
792  int sw = get_symbol(c, state, 0) + 1U;
793  int sh = get_symbol(c, state, 0) + 1U;
794 
795  if (sx < 0 || sy < 0 || sw <= 0 || sh <= 0)
796  return AVERROR_INVALIDDATA;
797  if (sx > f->num_h_slices - sw || sy > f->num_v_slices - sh)
798  return AVERROR_INVALIDDATA;
799 
800  sc->slice_x = sx * (int64_t)f->width / f->num_h_slices;
801  sc->slice_y = sy * (int64_t)f->height / f->num_v_slices;
802  sc->slice_width = (sx + sw) * (int64_t)f->width / f->num_h_slices - sc->slice_x;
803  sc->slice_height = (sy + sh) * (int64_t)f->height / f->num_v_slices - sc->slice_y;
804 
805  av_assert0((unsigned)sc->slice_width <= f->width &&
806  (unsigned)sc->slice_height <= f->height);
807  av_assert0 ( (unsigned)sc->slice_x + (uint64_t)sc->slice_width <= f->width
808  && (unsigned)sc->slice_y + (uint64_t)sc->slice_height <= f->height);
809  }
810 
811  ff_refstruct_unref(&sc->plane);
812  sc->plane = ff_ffv1_planes_alloc();
813  if (!sc->plane)
814  return AVERROR(ENOMEM);
815 
816  for (int i = 0; i < f->plane_count; i++) {
817  PlaneContext *const p = &sc->plane[i];
818 
819  if (f->version == 2) {
820  int idx = get_symbol(c, state, 0);
821  if (idx >= (unsigned)f->quant_table_count) {
822  av_log(f->avctx, AV_LOG_ERROR,
823  "quant_table_index out of range\n");
824  return AVERROR_INVALIDDATA;
825  }
826  p->quant_table_index = idx;
827  context_count = f->context_count[idx];
828  }
829 
830  if (f->version <= 2) {
831  av_assert0(context_count >= 0);
832  p->context_count = context_count;
833  }
834  }
835  }
836  return 0;
837 }
838 
839 static av_cold int decode_init(AVCodecContext *avctx)
840 {
841  FFV1Context *f = avctx->priv_data;
842  int ret;
843 
844  if ((ret = ff_ffv1_common_init(avctx)) < 0)
845  return ret;
846 
847  if (avctx->extradata_size > 0 && (ret = read_extra_header(f)) < 0)
848  return ret;
849 
850  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
851  return ret;
852 
853  return 0;
854 }
855 
856 static int decode_frame(AVCodecContext *avctx, AVFrame *rframe,
857  int *got_frame, AVPacket *avpkt)
858 {
859  uint8_t *buf = avpkt->data;
860  int buf_size = avpkt->size;
861  FFV1Context *f = avctx->priv_data;
862  RangeCoder *const c = &f->slices[0].c;
863  int ret, key_frame;
864  uint8_t keystate = 128;
865  uint8_t *buf_p;
866  AVFrame *p;
867 
868  ff_progress_frame_unref(&f->last_picture);
869  FFSWAP(ProgressFrame, f->picture, f->last_picture);
870 
871 
872  f->avctx = avctx;
873  f->frame_damaged = 0;
874  ff_init_range_decoder(c, buf, buf_size);
875  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
876 
877  if (get_rac(c, &keystate)) {
878  key_frame = AV_FRAME_FLAG_KEY;
879  f->key_frame_ok = 0;
880  if ((ret = read_header(f)) < 0)
881  return ret;
882  f->key_frame_ok = 1;
883  } else {
884  if (!f->key_frame_ok) {
885  av_log(avctx, AV_LOG_ERROR,
886  "Cannot decode non-keyframe without valid keyframe\n");
887  return AVERROR_INVALIDDATA;
888  }
889  key_frame = 0;
890  }
891 
892  if (f->ac != AC_GOLOMB_RICE) {
893  if (buf_size < avctx->width * avctx->height / (128*8))
894  return AVERROR_INVALIDDATA;
895  } else {
896  int w = avctx->width;
897  int s = 1 + w / (1<<23);
898  int i;
899 
900  w /= s;
901 
902  for (i = 0; w > (1<<ff_log2_run[i]); i++)
903  w -= ff_log2_run[i];
904  if (buf_size < (avctx->height + i + 6) / 8 * s)
905  return AVERROR_INVALIDDATA;
906  }
907 
908  ret = ff_progress_frame_get_buffer(avctx, &f->picture,
909  AV_GET_BUFFER_FLAG_REF);
910  if (ret < 0)
911  return ret;
912 
913  p = f->picture.f;
914 
915  p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
916  p->flags = (p->flags & ~AV_FRAME_FLAG_KEY) | key_frame;
917 
918  if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
919  /* we have interlaced material flagged in container */
920  p->flags |= AV_FRAME_FLAG_INTERLACED;
921  if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
922  p->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
923  }
924 
925  if (avctx->debug & FF_DEBUG_PICT_INFO)
926  av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
927  f->version, !!(p->flags & AV_FRAME_FLAG_KEY), f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
928 
929  ff_thread_finish_setup(avctx);
930 
931  buf_p = buf + buf_size;
932  for (int i = f->slice_count - 1; i >= 0; i--) {
933  FFV1SliceContext *sc = &f->slices[i];
934  int trailer = 3 + 5*!!f->ec;
935  int v;
936 
937  sc->slice_damaged = 0;
938 
939  if (i || f->version > 2) {
940  if (trailer > buf_p - buf) v = INT_MAX;
941  else v = AV_RB24(buf_p-trailer) + trailer;
942  } else v = buf_p - c->bytestream_start;
943  if (buf_p - c->bytestream_start < v) {
944  av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
945  ff_progress_frame_report(&f->picture, INT_MAX);
946  return AVERROR_INVALIDDATA;
947  }
948  buf_p -= v;
949 
950  if (f->ec) {
951  unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
952  if (crc) {
953  int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
954  av_log(f->avctx, AV_LOG_ERROR, "slice CRC mismatch %X!", crc);
955  if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
956  av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
957  } else if (ts != AV_NOPTS_VALUE) {
958  av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
959  } else {
960  av_log(f->avctx, AV_LOG_ERROR, "\n");
961  }
962  slice_set_damaged(f, sc);
963  }
964  if (avctx->debug & FF_DEBUG_PICT_INFO) {
965  av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08"PRIX32"\n", i, AV_RB32(buf_p + v - 4));
966  }
967  }
968 
969  if (i) {
970  ff_init_range_decoder(&sc->c, buf_p, v);
971  ff_build_rac_states(&sc->c, 0.05 * (1LL << 32), 256 - 8);
972  } else
973  sc->c.bytestream_end = buf_p + v;
974 
975  }
976 
977  avctx->execute(avctx,
978  decode_slice,
979  f->slices,
980  NULL,
981  f->slice_count,
982  sizeof(*f->slices));
983 
984  for (int i = f->slice_count - 1; i >= 0; i--) {
985  FFV1SliceContext *sc = &f->slices[i];
986  if (sc->slice_damaged && f->last_picture.f) {
987  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
988  const uint8_t *src[4];
989  uint8_t *dst[4];
990  ff_progress_frame_await(&f->last_picture, INT_MAX);
991  for (int j = 0; j < desc->nb_components; j++) {
992  int pixshift = desc->comp[j].depth > 8;
993  int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
994  int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
995  dst[j] = p->data[j] + p->linesize[j] *
996  (sc->slice_y >> sv) + ((sc->slice_x >> sh) << pixshift);
997  src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
998  (sc->slice_y >> sv) + ((sc->slice_x >> sh) << pixshift);
999 
1000  }
1001 
1002  av_image_copy(dst, p->linesize, src,
1003  f->last_picture.f->linesize,
1004  avctx->pix_fmt,
1005  sc->slice_width,
1006  sc->slice_height);
1007 
1008  f->slice_damaged[i] = 1;
1009  }
1010  }
1011  ff_progress_frame_report(&f->picture, INT_MAX);
1012 
1013  ff_progress_frame_unref(&f->last_picture);
1014  if ((ret = av_frame_ref(rframe, f->picture.f)) < 0)
1015  return ret;
1016 
1017  *got_frame = 1;
1018 
1019  return buf_size;
1020 }
1021 
1022 #if HAVE_THREADS
1023 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1024 {
1025  FFV1Context *fsrc = src->priv_data;
1026  FFV1Context *fdst = dst->priv_data;
1027 
1028  if (dst == src)
1029  return 0;
1030 
1031  fdst->version = fsrc->version;
1032  fdst->micro_version = fsrc->micro_version;
1033  fdst->chroma_planes = fsrc->chroma_planes;
1034  fdst->chroma_h_shift = fsrc->chroma_h_shift;
1035  fdst->chroma_v_shift = fsrc->chroma_v_shift;
1036  fdst->transparency = fsrc->transparency;
1037  fdst->plane_count = fsrc->plane_count;
1038  fdst->ac = fsrc->ac;
1039  fdst->colorspace = fsrc->colorspace;
1040 
1041  fdst->ec = fsrc->ec;
1042  fdst->intra = fsrc->intra;
1043  fdst->key_frame_ok = fsrc->key_frame_ok;
1044 
1045  fdst->packed_at_lsb = fsrc->packed_at_lsb;
1046  fdst->slice_count = fsrc->slice_count;
1047  fdst->use32bit = fsrc->use32bit;
1048  memcpy(fdst->state_transition, fsrc->state_transition,
1049  sizeof(fdst->state_transition));
1050 
1051  // in version 1 there is a single per-keyframe quant table, so
1052  // we need to propagate it between threads
1053  if (fsrc->version < 2)
1054  memcpy(fdst->quant_tables[0], fsrc->quant_tables[0], sizeof(fsrc->quant_tables[0]));
1055 
1056  for (int i = 0; i < fdst->num_h_slices * fdst->num_v_slices; i++) {
1057  FFV1SliceContext *sc = &fdst->slices[i];
1058  const FFV1SliceContext *sc0 = &fsrc->slices[i];
1059 
1060  ff_refstruct_replace(&sc->plane, sc0->plane);
1061 
1062  if (fsrc->version < 3) {
1063  sc->slice_x = sc0->slice_x;
1064  sc->slice_y = sc0->slice_y;
1065  sc->slice_width = sc0->slice_width;
1066  sc->slice_height = sc0->slice_height;
1067  }
1068  }
1069 
1070  ff_refstruct_replace(&fdst->slice_damaged, fsrc->slice_damaged);
1071 
1072  av_assert1(fdst->max_slice_count == fsrc->max_slice_count);
1073 
1074  ff_progress_frame_replace(&fdst->picture, &fsrc->picture);
1075 
1076  return 0;
1077 }
1078 #endif
1079 
1080 static av_cold int ffv1_decode_close(AVCodecContext *avctx)
1081 {
1082  FFV1Context *const s = avctx->priv_data;
1083 
1084  ff_progress_frame_unref(&s->picture);
1085  ff_progress_frame_unref(&s->last_picture);
1086 
1087  return ff_ffv1_close(avctx);
1088 }
1089 
1090 const FFCodec ff_ffv1_decoder = {
1091  .p.name = "ffv1",
1092  CODEC_LONG_NAME("FFmpeg video codec #1"),
1093  .p.type = AVMEDIA_TYPE_VIDEO,
1094  .p.id = AV_CODEC_ID_FFV1,
1095  .priv_data_size = sizeof(FFV1Context),
1096  .init = decode_init,
1097  .close = ffv1_decode_close,
1098  FF_CODEC_DECODE_CB(decode_frame),
1099  UPDATE_THREAD_CONTEXT(update_thread_context),
1100  .p.capabilities = AV_CODEC_CAP_DR1 |
1101  AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS,
1102  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP |
1103  FF_CODEC_CAP_USES_PROGRESSFRAMES,
1104 };
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:522
ff_progress_frame_report
void ff_progress_frame_report(ProgressFrame *f, int n)
Notify later decoding threads when part of their reference frame is ready.
Definition: decode.c:1888
read_extra_header
static int read_extra_header(FFV1Context *f)
Definition: ffv1dec.c:411
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:501
FFV1Context::chroma_v_shift
int chroma_v_shift
Definition: ffv1.h:116
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:215
FFV1SliceContext::slice_height
int slice_height
Definition: ffv1.h:75
FFV1Context::key_frame_ok
int key_frame_ok
Definition: ffv1.h:136
AV_EF_EXPLODE
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: defs.h:51
update_vlc_state
static void update_vlc_state(VlcState *const state, const int v)
Definition: ffv1.h:186
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:43
get_bits_left
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:695
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:267
AV_PIX_FMT_YA8
@ AV_PIX_FMT_YA8
8 bits gray, 8 bits alpha
Definition: pixfmt.h:140
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2965
MAX_OVERREAD
#define MAX_OVERREAD
Definition: lagarithrac.h:49
AV_FIELD_PROGRESSIVE
@ AV_FIELD_PROGRESSIVE
Definition: defs.h:202
FFV1SliceContext::plane
PlaneContext * plane
Definition: ffv1.h:86
FFV1Context::ec
int ec
Definition: ffv1.h:134
int64_t
long long int64_t
Definition: coverity.c:34
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:514
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:532
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:389
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:521
w
uint8_t w
Definition: llviddspenc.c:38
AVPacket::data
uint8_t * data
Definition: packet.h:539
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:516
AVCodecContext::field_order
enum AVFieldOrder field_order
Field order.
Definition: avcodec.h:714
ff_progress_frame_get_buffer
int ff_progress_frame_get_buffer(AVCodecContext *avctx, ProgressFrame *f, int flags)
This function sets up the ProgressFrame, i.e.
Definition: decode.c:1843
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:478
PlaneContext::state
uint8_t(* state)[CONTEXT_SIZE]
Definition: ffv1.h:64
FFCodec
Definition: codec_internal.h:127
FFV1Context::num_h_slices
int num_h_slices
Definition: ffv1.h:148
RangeCoder::bytestream_end
uint8_t * bytestream_end
Definition: rangecoder.h:44
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:106
AVFrame::flags
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:661
read_quant_table
static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
Definition: ffv1dec.c:366
decode_line
static av_always_inline int RENAME() decode_line(FFV1Context *f, FFV1SliceContext *sc, GetBitContext *gb, int w, TYPE *sample[2], int plane_index, int bits, int ac)
Definition: ffv1dec_template.c:26
AC_RANGE_CUSTOM_TAB
#define AC_RANGE_CUSTOM_TAB
Definition: ffv1.h:51
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:517
init_get_bits
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:514
thread.h
FFV1Context::chroma_h_shift
int chroma_h_shift
Definition: ffv1.h:116
FFV1SliceContext::slice_x
int slice_x
Definition: ffv1.h:76
ff_ffv1_clear_slice_state
void ff_ffv1_clear_slice_state(const FFV1Context *f, FFV1SliceContext *sc)
Definition: ffv1.c:180
FF_DEBUG_PICT_INFO
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:1407
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:458
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:410
AV_FRAME_FLAG_TOP_FIELD_FIRST
#define AV_FRAME_FLAG_TOP_FIELD_FIRST
A flag to mark frames where the top field is displayed first if the content is interlaced.
Definition: frame.h:653
crc.h
golomb.h
exp golomb vlc stuff
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:513
AV_FIELD_TT
@ AV_FIELD_TT
Top coded_first, top displayed first.
Definition: defs.h:203
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:131
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:496
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:494
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:523
ffv1_decode_close
static av_cold int ffv1_decode_close(AVCodecContext *avctx)
Definition: ffv1dec.c:1080
GetBitContext
Definition: get_bits.h:108
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:476
av_noinline
#define av_noinline
Definition: attributes.h:72
MAX_SLICES
#define MAX_SLICES
Definition: d3d12va_hevc.c:33
CONTEXT_SIZE
#define CONTEXT_SIZE
Definition: ffv1.h:44
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:462
get_symbol_inline
static av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state, int is_signed)
Definition: ffv1dec.c:44
FFV1Context::chroma_planes
int chroma_planes
Definition: ffv1.h:115
PlaneContext::context_count
int context_count
Definition: ffv1.h:63
AVRational::num
int num
Numerator.
Definition: rational.h:59
progressframe.h
AV_FIELD_TB
@ AV_FIELD_TB
Top coded first, bottom displayed first.
Definition: defs.h:205
refstruct.h
decode_rgb_frame
static int RENAME() decode_rgb_frame(FFV1Context *f, FFV1SliceContext *sc, GetBitContext *gb, uint8_t *src[4], int w, int h, int stride[4])
Definition: ffv1dec_template.c:134
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:481
avassert.h
FF_CODEC_CAP_USES_PROGRESSFRAMES
#define FF_CODEC_CAP_USES_PROGRESSFRAMES
The decoder might make use of the ProgressFrame API.
Definition: codec_internal.h:69
FFV1Context::quant_tables
int16_t quant_tables[MAX_QUANT_TABLES][MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:126
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:209
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:490
AV_FRAME_FLAG_KEY
#define AV_FRAME_FLAG_KEY
A flag to mark frames that are keyframes.
Definition: frame.h:640
FFV1SliceContext::sample_buffer
int16_t * sample_buffer
Definition: ffv1.h:71
decode_plane
static int decode_plane(FFV1Context *f, FFV1SliceContext *sc, GetBitContext *gb, uint8_t *src, int w, int h, int stride, int plane_index, int pixel_stride)
Definition: ffv1dec.c:120
FFV1Context::use32bit
int use32bit
Definition: ffv1.h:132
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:498
AVCodecContext::extradata_size
int extradata_size
Definition: avcodec.h:530
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:311
s
#define s(width, name)
Definition: cbs_vp9.c:198
AV_PIX_FMT_GBRAP14
#define AV_PIX_FMT_GBRAP14
Definition: pixfmt.h:500
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:499
FFV1Context::slice_count
int slice_count
Definition: ffv1.h:145
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:108
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:491
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:60
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:431
decode_frame
static int decode_frame(AVCodecContext *avctx, AVFrame *rframe, int *got_frame, AVPacket *avpkt)
Definition: ffv1dec.c:856
av_q2d
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
FFV1Context::max_slice_count
int max_slice_count
Definition: ffv1.h:146
bits
uint8_t bits
Definition: vp3data.h:128
FFV1Context::intra
int intra
Definition: ffv1.h:135
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:40
is_input_end
static int is_input_end(RangeCoder *c, GetBitContext *gb, int ac)
Definition: ffv1dec.c:98
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:520
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:475
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:230
read_quant_tables
static int read_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256])
Definition: ffv1dec.c:393
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:489
ff_progress_frame_unref
void ff_progress_frame_unref(ProgressFrame *f)
Give up a reference to the underlying frame contained in a ProgressFrame and reset the ProgressFrame,...
Definition: decode.c:1871
ff_progress_frame_await
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_progress_frame_await() 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_progress_frame_report() has been called on them. This includes draw_edges(). Porting codecs to frame threading
get_bits.h
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:461
fold
static av_always_inline int fold(int diff, int bits)
Definition: ffv1.h:175
FFV1Context::ac
int ac
1=range coder <-> 0=golomb rice
Definition: ffv1.h:125
get_vlc_symbol
static int get_vlc_symbol(GetBitContext *gb, VlcState *const state, int bits)
Definition: ffv1dec.c:73
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:73
FFV1Context::plane_count
int plane_count
Definition: ffv1.h:124
FFV1Context::slice_damaged
uint8_t * slice_damaged
Definition: ffv1.h:158
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:296
arg
const char * arg
Definition: jacosubdec.c:67
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:459
AV_CODEC_CAP_FRAME_THREADS
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: codec.h:110
quant_table
static const int16_t quant_table[64]
Definition: intrax8.c:517
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:497
read_header
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:538
get_symbol
static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
Definition: ffv1dec.c:68
NULL
#define NULL
Definition: coverity.c:32
PlaneContext::vlc_state
VlcState * vlc_state
Definition: ffv1.h:65
AC_GOLOMB_RICE
#define AC_GOLOMB_RICE
Definition: ffv1.h:49
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:64
FFV1Context::num_v_slices
int num_v_slices
Definition: ffv1.h:147
FFV1Context::colorspace
int colorspace
Definition: ffv1.h:130
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:279
ff_ffv1_decoder
const FFCodec ff_ffv1_decoder
Definition: ffv1dec.c:1090
FFV1Context::slices
FFV1SliceContext * slices
Definition: ffv1.h:150
FFV1Context::state_transition
uint8_t state_transition[256]
Definition: ffv1.h:128
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:480
mathops.h
ff_refstruct_allocz
static void * ff_refstruct_allocz(size_t size)
Equivalent to ff_refstruct_alloc_ext(size, 0, NULL, NULL)
Definition: refstruct.h:105
PlaneContext
Definition: ffv1.h:61
UPDATE_THREAD_CONTEXT
#define UPDATE_THREAD_CONTEXT(func)
Definition: codec_internal.h:305
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:479
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:493
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:54
ff_dlog
#define ff_dlog(a,...)
Definition: tableprint_vlc.h:28
FFV1SliceContext::slice_width
int slice_width
Definition: ffv1.h:74
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:491
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts.c:368
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:540
height
#define height
Definition: dsp.h:85
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:388
codec_internal.h
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition: dsp.h:83
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:483
ff_ffv1_close
av_cold int ff_ffv1_close(AVCodecContext *avctx)
Definition: ffv1.c:205
AVCodecContext::pkt_timebase
AVRational pkt_timebase
Timebase in which pkt_dts/pts and AVPacket.dts/pts are expressed.
Definition: avcodec.h:557
sample
#define sample
Definition: flacdsp_template.c:44
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
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
slice_set_damaged
static void slice_set_damaged(FFV1Context *f, FFV1SliceContext *sc)
Definition: ffv1dec.c:257
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:485
RangeCoder::bytestream
uint8_t * bytestream
Definition: rangecoder.h:43
FFV1Context::picture
ProgressFrame picture
Definition: ffv1.h:121
AVPacket::dts
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:538
AV_PIX_FMT_RGB32
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:451
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:174
FFV1SliceContext::slice_rct_by_coef
int slice_rct_by_coef
Definition: ffv1.h:82
av_crc_get_table
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:374
AV_CODEC_CAP_SLICE_THREADS
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: codec.h:114
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:518
ff_ffv1_init_slice_state
av_cold int ff_ffv1_init_slice_state(const FFV1Context *f, FFV1SliceContext *sc)
Definition: ffv1.c:74
PlaneContext::quant_table_index
int quant_table_index
Definition: ffv1.h:62
FF_THREAD_FRAME
#define FF_THREAD_FRAME
Decode more than one frame at once.
Definition: avcodec.h:1604
FFV1SliceContext::c
RangeCoder c
Definition: ffv1.h:88
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:532
FFV1SliceContext::slice_rct_ry_coef
int slice_rct_ry_coef
Definition: ffv1.h:83
state
static struct @457 state
av_flatten
#define av_flatten
Definition: attributes.h:96
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:495
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:56
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
ffv1.h
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:194
FFV1SliceContext
Definition: ffv1.h:70
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:624
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:663
AV_FRAME_FLAG_INTERLACED
#define AV_FRAME_FLAG_INTERLACED
A flag to mark frames whose content is interlaced.
Definition: frame.h:648
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:477
MAX_CONTEXT_INPUTS
#define MAX_CONTEXT_INPUTS
Definition: ffv1.h:47
FFV1Context::packed_at_lsb
int packed_at_lsb
Definition: ffv1.h:140
avcodec.h
stride
#define stride
Definition: h264pred_template.c:537
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
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
AV_PIX_FMT_0RGB32
#define AV_PIX_FMT_0RGB32
Definition: pixfmt.h:455
decode_slice_header
static int decode_slice_header(const FFV1Context *f, FFV1SliceContext *sc, AVFrame *frame)
Definition: ffv1dec.c:168
FFV1SliceContext::slice_y
int slice_y
Definition: ffv1.h:77
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:515
ff_refstruct_replace
void ff_refstruct_replace(void *dstp, const void *src)
Ensure *dstp refers to the same object as src.
Definition: refstruct.c:160
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:482
U
#define U(x)
Definition: vpx_arith.h:37
ff_ffv1_planes_alloc
PlaneContext * ff_ffv1_planes_alloc(void)
Definition: ffv1.c:68
ff_progress_frame_replace
void ff_progress_frame_replace(ProgressFrame *dst, const ProgressFrame *src)
Do nothing if dst and src already refer to the same AVFrame; otherwise unreference dst and if src is ...
Definition: decode.c:1878
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:487
ff_ffv1_allocate_initial_states
int ff_ffv1_allocate_initial_states(FFV1Context *f)
Definition: ffv1.c:165
AVCodecContext
main external API structure.
Definition: avcodec.h:451
RangeCoder::bytestream_start
uint8_t * bytestream_start
Definition: rangecoder.h:42
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:1623
decode_init
static av_cold int decode_init(AVCodecContext *avctx)
Definition: ffv1dec.c:839
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:72
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:519
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. Use ff_thread_get_buffer()(or ff_progress_frame_get_buffer() in case you have inter-frame dependencies and use the ProgressFrame API) to allocate frame buffers. Call ff_progress_frame_report() after some part of the current picture has decoded. A good place to put this is where draw_horiz_band() is called - add this if it isn 't called anywhere
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:105
temp
else temp
Definition: vf_mcdeint.c:263
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:78
AVCodecContext::debug
int debug
debug
Definition: avcodec.h:1406
desc
const char * desc
Definition: libsvtav1.c:79
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:77
mem.h
MAX_QUANT_TABLES
#define MAX_QUANT_TABLES
Definition: ffv1.h:46
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:107
FFV1Context::transparency
int transparency
Definition: ffv1.h:117
scale
static void scale(int *out, const int *in, const int w, const int h, const int shift)
Definition: intra.c:291
ProgressFrame
The ProgressFrame structure.
Definition: progressframe.h:73
AVPacket
This structure stores compressed data.
Definition: packet.h:516
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:478
FFV1SliceContext::run_index
int run_index
Definition: ffv1.h:80
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
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:80
ffv1dec_template.c
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:624
ff_ffv1_init_slice_contexts
av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
Definition: ffv1.c:122
ff_log2_run
const uint8_t ff_log2_run[41]
Definition: mathtables.c:116
imgutils.h
FFV1SliceContext::slice_reset_contexts
int slice_reset_contexts
Definition: ffv1.h:95
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:434
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:79
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:113
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:484
h
h
Definition: vp9dsp_template.c:2070
RangeCoder
Definition: mss3.c:63
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:488
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
width
#define width
Definition: dsp.h:85
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:460
av_image_copy
void av_image_copy(uint8_t *const dst_data[4], const int dst_linesizes[4], const uint8_t *const 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
FFV1SliceContext::ac_byte_count
int ac_byte_count
number of bytes used for AC coding
Definition: ffv1.h:90
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
FFV1SliceContext::slice_damaged
int slice_damaged
Definition: ffv1.h:96
FFV1SliceContext::slice_coding_mode
int slice_coding_mode
Definition: ffv1.h:81
ff_refstruct_unref
void ff_refstruct_unref(void *objp)
Decrement the reference count of the underlying object and automatically free the object if there are...
Definition: refstruct.c:120
src
#define src
Definition: vp8dsp.c:248
FFV1Context::version
int version
Definition: ffv1.h:112
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:173
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:486
planes
static const struct @458 planes[]
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