FFmpeg  4.4.6
nutenc.c
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1 /*
2  * nut muxer
3  * Copyright (c) 2004-2007 Michael Niedermayer
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include <stdint.h>
23 
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/mathematics.h"
26 #include "libavutil/tree.h"
27 #include "libavutil/dict.h"
28 #include "libavutil/avassert.h"
29 #include "libavutil/time.h"
30 #include "libavutil/opt.h"
31 #include "libavcodec/bytestream.h"
33 #include "nut.h"
34 #include "internal.h"
35 #include "avio_internal.h"
36 #include "riff.h"
37 
38 static int find_expected_header(AVCodecParameters *p, int size, int key_frame,
39  uint8_t out[64])
40 {
41  int sample_rate = p->sample_rate;
42 
43  if (size > 4096)
44  return 0;
45 
46  AV_WB24(out, 1);
47 
48  if (p->codec_id == AV_CODEC_ID_MPEG4) {
49  if (key_frame) {
50  return 3;
51  } else {
52  out[3] = 0xB6;
53  return 4;
54  }
55  } else if (p->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
57  return 3;
58  } else if (p->codec_id == AV_CODEC_ID_H264) {
59  return 3;
60  } else if (p->codec_id == AV_CODEC_ID_MP3 ||
61  p->codec_id == AV_CODEC_ID_MP2) {
62  int lsf, mpeg25, sample_rate_index, bitrate_index, frame_size;
63  int layer = p->codec_id == AV_CODEC_ID_MP3 ? 3 : 2;
64  unsigned int header = 0xFFF00000;
65 
66  lsf = sample_rate < (24000 + 32000) / 2;
67  mpeg25 = sample_rate < (12000 + 16000) / 2;
68  sample_rate <<= lsf + mpeg25;
69  if (sample_rate < (32000 + 44100) / 2) sample_rate_index = 2;
70  else if (sample_rate < (44100 + 48000) / 2) sample_rate_index = 0;
71  else sample_rate_index = 1;
72 
73  sample_rate = avpriv_mpa_freq_tab[sample_rate_index] >> (lsf + mpeg25);
74 
75  for (bitrate_index = 2; bitrate_index < 30; bitrate_index++) {
76  frame_size =
77  avpriv_mpa_bitrate_tab[lsf][layer - 1][bitrate_index >> 1];
78  frame_size = (frame_size * 144000) / (sample_rate << lsf) +
79  (bitrate_index & 1);
80 
81  if (frame_size == size)
82  break;
83  }
84 
85  header |= (!lsf) << 19;
86  header |= (4 - layer) << 17;
87  header |= 1 << 16; //no crc
88  AV_WB32(out, header);
89  if (size <= 0)
90  return 2; //we guess there is no crc, if there is one the user clearly does not care about overhead
91  if (bitrate_index == 30)
92  return -1; //something is wrong ...
93 
94  header |= (bitrate_index >> 1) << 12;
95  header |= sample_rate_index << 10;
96  header |= (bitrate_index & 1) << 9;
97 
98  return 2; //FIXME actually put the needed ones in build_elision_headers()
99  //return 3; //we guess that the private bit is not set
100 //FIXME the above assumptions should be checked, if these turn out false too often something should be done
101  }
102  return 0;
103 }
104 
106  int frame_type)
107 {
108  NUTContext *nut = s->priv_data;
109  uint8_t out[64];
110  int i;
112 
113  for (i = 1; i < nut->header_count; i++) {
114  if (len == nut->header_len[i] && !memcmp(out, nut->header[i], len)) {
115  return i;
116  }
117  }
118 
119  return 0;
120 }
121 
123 {
124  NUTContext *nut = s->priv_data;
125  int i;
126  //FIXME this is lame
127  //FIXME write a 2pass mode to find the maximal headers
128  static const uint8_t headers[][5] = {
129  { 3, 0x00, 0x00, 0x01 },
130  { 4, 0x00, 0x00, 0x01, 0xB6},
131  { 2, 0xFF, 0xFA }, //mp3+crc
132  { 2, 0xFF, 0xFB }, //mp3
133  { 2, 0xFF, 0xFC }, //mp2+crc
134  { 2, 0xFF, 0xFD }, //mp2
135  };
136 
137  nut->header_count = 7;
138  for (i = 1; i < nut->header_count; i++) {
139  nut->header_len[i] = headers[i - 1][0];
140  nut->header[i] = &headers[i - 1][1];
141  }
142 }
143 
145 {
146  NUTContext *nut = s->priv_data;
147  int key_frame, index, pred, stream_id;
148  int start = 1;
149  int end = 254;
150  int keyframe_0_esc = s->nb_streams > 2;
151  int pred_table[10];
152  FrameCode *ft;
153 
154  ft = &nut->frame_code[start];
155  ft->flags = FLAG_CODED;
156  ft->size_mul = 1;
157  ft->pts_delta = 1;
158  start++;
159 
160  if (keyframe_0_esc) {
161  /* keyframe = 0 escape */
162  FrameCode *ft = &nut->frame_code[start];
164  ft->size_mul = 1;
165  start++;
166  }
167 
168  for (stream_id = 0; stream_id < s->nb_streams; stream_id++) {
169  int start2 = start + (end - start) * stream_id / s->nb_streams;
170  int end2 = start + (end - start) * (stream_id + 1) / s->nb_streams;
171  AVCodecParameters *par = s->streams[stream_id]->codecpar;
172  int is_audio = par->codec_type == AVMEDIA_TYPE_AUDIO;
173  int intra_only = /*codec->intra_only || */ is_audio;
174  int pred_count;
175  int frame_size = 0;
176 
177  if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
179  if (par->codec_id == AV_CODEC_ID_VORBIS && !frame_size)
180  frame_size = 64;
181  } else {
182  AVRational f = av_div_q(av_inv_q(s->streams[stream_id]->avg_frame_rate), *nut->stream[stream_id].time_base);
183  if (f.den == 1 && f.num>0)
184  frame_size = f.num;
185  }
186  if (!frame_size)
187  frame_size = 1;
188 
189  for (key_frame = 0; key_frame < 2; key_frame++) {
190  if (!intra_only || !keyframe_0_esc || key_frame != 0) {
191  FrameCode *ft = &nut->frame_code[start2];
192  ft->flags = FLAG_KEY * key_frame;
194  ft->stream_id = stream_id;
195  ft->size_mul = 1;
196  if (is_audio)
197  ft->header_idx = find_header_idx(s, par, -1, key_frame);
198  start2++;
199  }
200  }
201 
202  key_frame = intra_only;
203 #if 1
204  if (is_audio) {
205  int frame_bytes;
206  int pts;
207 
208  if (par->block_align > 0) {
209  frame_bytes = par->block_align;
210  } else {
212  frame_bytes = frame_size * (int64_t)par->bit_rate / (8 * par->sample_rate);
213  }
214 
215  for (pts = 0; pts < 2; pts++) {
216  for (pred = 0; pred < 2; pred++) {
217  FrameCode *ft = &nut->frame_code[start2];
218  ft->flags = FLAG_KEY * key_frame;
219  ft->stream_id = stream_id;
220  ft->size_mul = frame_bytes + 2;
221  ft->size_lsb = frame_bytes + pred;
222  ft->pts_delta = pts * frame_size;
223  ft->header_idx = find_header_idx(s, par, frame_bytes + pred, key_frame);
224  start2++;
225  }
226  }
227  } else {
228  FrameCode *ft = &nut->frame_code[start2];
229  ft->flags = FLAG_KEY | FLAG_SIZE_MSB;
230  ft->stream_id = stream_id;
231  ft->size_mul = 1;
232  ft->pts_delta = frame_size;
233  start2++;
234  }
235 #endif
236 
237  if (par->video_delay) {
238  pred_count = 5;
239  pred_table[0] = -2;
240  pred_table[1] = -1;
241  pred_table[2] = 1;
242  pred_table[3] = 3;
243  pred_table[4] = 4;
244  } else if (par->codec_id == AV_CODEC_ID_VORBIS) {
245  pred_count = 3;
246  pred_table[0] = 2;
247  pred_table[1] = 9;
248  pred_table[2] = 16;
249  } else {
250  pred_count = 1;
251  pred_table[0] = 1;
252  }
253 
254  for (pred = 0; pred < pred_count; pred++) {
255  int start3 = start2 + (end2 - start2) * pred / pred_count;
256  int end3 = start2 + (end2 - start2) * (pred + 1) / pred_count;
257 
258  pred_table[pred] *= frame_size;
259 
260  for (index = start3; index < end3; index++) {
261  FrameCode *ft = &nut->frame_code[index];
262  ft->flags = FLAG_KEY * key_frame;
263  ft->flags |= FLAG_SIZE_MSB;
264  ft->stream_id = stream_id;
265 //FIXME use single byte size and pred from last
266  ft->size_mul = end3 - start3;
267  ft->size_lsb = index - start3;
268  ft->pts_delta = pred_table[pred];
269  if (is_audio)
270  ft->header_idx = find_header_idx(s, par, -1, key_frame);
271  }
272  }
273  }
274  memmove(&nut->frame_code['N' + 1], &nut->frame_code['N'], sizeof(FrameCode) * (255 - 'N'));
275  nut->frame_code[0].flags =
276  nut->frame_code[255].flags =
277  nut->frame_code['N'].flags = FLAG_INVALID;
278 }
279 
280 /**
281  * Get the length in bytes which is needed to store val as v.
282  */
283 static int get_v_length(uint64_t val)
284 {
285  int i = 1;
286 
287  while (val >>= 7)
288  i++;
289 
290  return i;
291 }
292 
293 /**
294  * Put val using a variable number of bytes.
295  */
296 static void put_v(AVIOContext *bc, uint64_t val)
297 {
298  int i = get_v_length(val);
299 
300  while (--i > 0)
301  avio_w8(bc, 128 | (uint8_t)(val >> (7*i)));
302 
303  avio_w8(bc, val & 127);
304 }
305 
306 static void put_tt(NUTContext *nut, AVRational *time_base, AVIOContext *bc, uint64_t val)
307 {
308  val *= nut->time_base_count;
309  val += time_base - nut->time_base;
310  put_v(bc, val);
311 }
312 /**
313  * Store a string as vb.
314  */
315 static void put_str(AVIOContext *bc, const char *string)
316 {
317  size_t len = strlen(string);
318 
319  put_v(bc, len);
320  avio_write(bc, string, len);
321 }
322 
323 static void put_s(AVIOContext *bc, int64_t val)
324 {
325  put_v(bc, 2 * FFABS(val) - (val > 0));
326 }
327 
328 static void put_packet(NUTContext *nut, AVIOContext *bc, AVIOContext *dyn_bc,
329  uint64_t startcode)
330 {
331  uint8_t *dyn_buf = NULL;
332  int dyn_size = avio_get_dyn_buf(dyn_bc, &dyn_buf);
333  int forw_ptr = dyn_size + 4;
334 
335  if (forw_ptr > 4096)
337  avio_wb64(bc, startcode);
338  put_v(bc, forw_ptr);
339  if (forw_ptr > 4096)
340  avio_wl32(bc, ffio_get_checksum(bc));
341 
343  avio_write(bc, dyn_buf, dyn_size);
344  avio_wl32(bc, ffio_get_checksum(bc));
345 
346  ffio_reset_dyn_buf(dyn_bc);
347 }
348 
350 {
351  int i, j, tmp_pts, tmp_flags, tmp_stream, tmp_mul, tmp_size, tmp_fields,
352  tmp_head_idx;
353  int64_t tmp_match;
354 
355  put_v(bc, nut->version);
356  if (nut->version > 3)
357  put_v(bc, nut->minor_version = 1);
358  put_v(bc, nut->avf->nb_streams);
359  put_v(bc, nut->max_distance);
360  put_v(bc, nut->time_base_count);
361 
362  for (i = 0; i < nut->time_base_count; i++) {
363  put_v(bc, nut->time_base[i].num);
364  put_v(bc, nut->time_base[i].den);
365  }
366 
367  tmp_pts = 0;
368  tmp_mul = 1;
369  tmp_stream = 0;
370  tmp_match = 1 - (1LL << 62);
371  tmp_head_idx = 0;
372  for (i = 0; i < 256; ) {
373  tmp_fields = 0;
374  tmp_size = 0;
375 // tmp_res=0;
376  if (tmp_pts != nut->frame_code[i].pts_delta ) tmp_fields = 1;
377  if (tmp_mul != nut->frame_code[i].size_mul ) tmp_fields = 2;
378  if (tmp_stream != nut->frame_code[i].stream_id ) tmp_fields = 3;
379  if (tmp_size != nut->frame_code[i].size_lsb ) tmp_fields = 4;
380 // if (tmp_res != nut->frame_code[i].res ) tmp_fields=5;
381  if (tmp_head_idx != nut->frame_code[i].header_idx) tmp_fields = 8;
382 
383  tmp_pts = nut->frame_code[i].pts_delta;
384  tmp_flags = nut->frame_code[i].flags;
385  tmp_stream = nut->frame_code[i].stream_id;
386  tmp_mul = nut->frame_code[i].size_mul;
387  tmp_size = nut->frame_code[i].size_lsb;
388 // tmp_res = nut->frame_code[i].res;
389  tmp_head_idx = nut->frame_code[i].header_idx;
390 
391  for (j = 0; i < 256; j++, i++) {
392  if (i == 'N') {
393  j--;
394  continue;
395  }
396  if (nut->frame_code[i].pts_delta != tmp_pts ||
397  nut->frame_code[i].flags != tmp_flags ||
398  nut->frame_code[i].stream_id != tmp_stream ||
399  nut->frame_code[i].size_mul != tmp_mul ||
400  nut->frame_code[i].size_lsb != tmp_size + j ||
401 // nut->frame_code[i].res != tmp_res ||
402  nut->frame_code[i].header_idx != tmp_head_idx)
403  break;
404  }
405  if (j != tmp_mul - tmp_size)
406  tmp_fields = 6;
407 
408  put_v(bc, tmp_flags);
409  put_v(bc, tmp_fields);
410  if (tmp_fields > 0) put_s(bc, tmp_pts);
411  if (tmp_fields > 1) put_v(bc, tmp_mul);
412  if (tmp_fields > 2) put_v(bc, tmp_stream);
413  if (tmp_fields > 3) put_v(bc, tmp_size);
414  if (tmp_fields > 4) put_v(bc, 0 /*tmp_res*/);
415  if (tmp_fields > 5) put_v(bc, j);
416  if (tmp_fields > 6) put_v(bc, tmp_match);
417  if (tmp_fields > 7) put_v(bc, tmp_head_idx);
418  }
419  put_v(bc, nut->header_count - 1);
420  for (i = 1; i < nut->header_count; i++) {
421  put_v(bc, nut->header_len[i]);
422  avio_write(bc, nut->header[i], nut->header_len[i]);
423  }
424  // flags had been effectively introduced in version 4
425  if (nut->version > 3)
426  put_v(bc, nut->flags);
427 }
428 
430  AVStream *st, int i)
431 {
432  NUTContext *nut = avctx->priv_data;
433  AVCodecParameters *par = st->codecpar;
434 
435  put_v(bc, i);
436  switch (par->codec_type) {
437  case AVMEDIA_TYPE_VIDEO: put_v(bc, 0); break;
438  case AVMEDIA_TYPE_AUDIO: put_v(bc, 1); break;
439  case AVMEDIA_TYPE_SUBTITLE: put_v(bc, 2); break;
440  default: put_v(bc, 3); break;
441  }
442  put_v(bc, 4);
443 
444  if (par->codec_tag) {
445  avio_wl32(bc, par->codec_tag);
446  } else {
447  av_log(avctx, AV_LOG_ERROR, "No codec tag defined for stream %d\n", i);
448  return AVERROR(EINVAL);
449  }
450 
451  put_v(bc, nut->stream[i].time_base - nut->time_base);
452  put_v(bc, nut->stream[i].msb_pts_shift);
453  put_v(bc, nut->stream[i].max_pts_distance);
454  put_v(bc, par->video_delay);
455  avio_w8(bc, 0); /* flags: 0x1 - fixed_fps, 0x2 - index_present */
456 
457  put_v(bc, par->extradata_size);
458  avio_write(bc, par->extradata, par->extradata_size);
459 
460  switch (par->codec_type) {
461  case AVMEDIA_TYPE_AUDIO:
462  put_v(bc, par->sample_rate);
463  put_v(bc, 1);
464  put_v(bc, par->channels);
465  break;
466  case AVMEDIA_TYPE_VIDEO:
467  put_v(bc, par->width);
468  put_v(bc, par->height);
469 
470  if (st->sample_aspect_ratio.num <= 0 ||
471  st->sample_aspect_ratio.den <= 0) {
472  put_v(bc, 0);
473  put_v(bc, 0);
474  } else {
475  put_v(bc, st->sample_aspect_ratio.num);
476  put_v(bc, st->sample_aspect_ratio.den);
477  }
478  put_v(bc, 0); /* csp type -- unknown */
479  break;
480  default:
481  break;
482  }
483  return 0;
484 }
485 
486 static int add_info(AVIOContext *bc, const char *type, const char *value)
487 {
488  put_str(bc, type);
489  put_s(bc, -1);
490  put_str(bc, value);
491  return 1;
492 }
493 
495 {
496  AVFormatContext *s = nut->avf;
497  AVDictionaryEntry *t = NULL;
498  AVIOContext *dyn_bc;
499  uint8_t *dyn_buf = NULL;
500  int count = 0, dyn_size;
501  int ret = avio_open_dyn_buf(&dyn_bc);
502  if (ret < 0)
503  return ret;
504 
506  while ((t = av_dict_get(s->metadata, "", t, AV_DICT_IGNORE_SUFFIX)))
507  count += add_info(dyn_bc, t->key, t->value);
508 
509  put_v(bc, 0); //stream_if_plus1
510  put_v(bc, 0); //chapter_id
511  put_v(bc, 0); //timestamp_start
512  put_v(bc, 0); //length
513 
514  put_v(bc, count);
515 
516  dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf);
517  avio_write(bc, dyn_buf, dyn_size);
518  av_free(dyn_buf);
519  return 0;
520 }
521 
522 static int write_streaminfo(NUTContext *nut, AVIOContext *bc, int stream_id) {
523  AVFormatContext *s= nut->avf;
524  AVStream* st = s->streams[stream_id];
525  AVDictionaryEntry *t = NULL;
526  AVIOContext *dyn_bc;
527  uint8_t *dyn_buf=NULL;
528  int count=0, dyn_size, i;
529  int ret = avio_open_dyn_buf(&dyn_bc);
530  if (ret < 0)
531  return ret;
532 
533  while ((t = av_dict_get(st->metadata, "", t, AV_DICT_IGNORE_SUFFIX)))
534  count += add_info(dyn_bc, t->key, t->value);
535  for (i=0; ff_nut_dispositions[i].flag; ++i) {
537  count += add_info(dyn_bc, "Disposition", ff_nut_dispositions[i].str);
538  }
539  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
540  uint8_t buf[256];
541  if (st->r_frame_rate.num>0 && st->r_frame_rate.den>0)
542  snprintf(buf, sizeof(buf), "%d/%d", st->r_frame_rate.num, st->r_frame_rate.den);
543  else
544  snprintf(buf, sizeof(buf), "%d/%d", st->avg_frame_rate.num, st->avg_frame_rate.den);
545  count += add_info(dyn_bc, "r_frame_rate", buf);
546  }
547  dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf);
548 
549  if (count) {
550  put_v(bc, stream_id + 1); //stream_id_plus1
551  put_v(bc, 0); //chapter_id
552  put_v(bc, 0); //timestamp_start
553  put_v(bc, 0); //length
554 
555  put_v(bc, count);
556 
557  avio_write(bc, dyn_buf, dyn_size);
558  }
559 
560  av_free(dyn_buf);
561  return count;
562 }
563 
564 static int write_chapter(NUTContext *nut, AVIOContext *bc, int id)
565 {
566  AVIOContext *dyn_bc;
567  uint8_t *dyn_buf = NULL;
568  AVDictionaryEntry *t = NULL;
569  AVChapter *ch = nut->avf->chapters[id];
570  int ret, dyn_size, count = 0;
571 
572  ret = avio_open_dyn_buf(&dyn_bc);
573  if (ret < 0)
574  return ret;
575 
576  put_v(bc, 0); // stream_id_plus1
577  put_s(bc, id + 1); // chapter_id
578  put_tt(nut, nut->chapter[id].time_base, bc, ch->start); // chapter_start
579  put_v(bc, ch->end - ch->start); // chapter_len
580 
581  while ((t = av_dict_get(ch->metadata, "", t, AV_DICT_IGNORE_SUFFIX)))
582  count += add_info(dyn_bc, t->key, t->value);
583 
584  put_v(bc, count);
585 
586  dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf);
587  avio_write(bc, dyn_buf, dyn_size);
588  av_freep(&dyn_buf);
589  return 0;
590 }
591 
592 static int write_index(NUTContext *nut, AVIOContext *bc) {
593  int i;
594  Syncpoint dummy= { .pos= 0 };
595  Syncpoint *next_node[2] = { NULL };
596  int64_t startpos = avio_tell(bc);
597  int64_t payload_size;
598 
599  put_tt(nut, nut->max_pts_tb, bc, nut->max_pts);
600 
601  put_v(bc, nut->sp_count);
602 
603  for (i=0; i<nut->sp_count; i++) {
604  av_tree_find(nut->syncpoints, &dummy, ff_nut_sp_pos_cmp, (void**)next_node);
605  put_v(bc, (next_node[1]->pos >> 4) - (dummy.pos>>4));
606  dummy.pos = next_node[1]->pos;
607  }
608 
609  for (i=0; i<nut->avf->nb_streams; i++) {
610  StreamContext *nus= &nut->stream[i];
611  int64_t last_pts= -1;
612  int j, k;
613  for (j=0; j<nut->sp_count; j++) {
614  int flag;
615  int n = 0;
616 
617  if (j && nus->keyframe_pts[j] == nus->keyframe_pts[j-1]) {
618  av_log(nut->avf, AV_LOG_WARNING, "Multiple keyframes with same PTS\n");
619  nus->keyframe_pts[j] = AV_NOPTS_VALUE;
620  }
621 
622  flag = (nus->keyframe_pts[j] != AV_NOPTS_VALUE) ^ (j+1 == nut->sp_count);
623  for (; j<nut->sp_count && (nus->keyframe_pts[j] != AV_NOPTS_VALUE) == flag; j++)
624  n++;
625 
626  put_v(bc, 1 + 2 * flag + 4 * n);
627  for (k= j - n; k<=j && k<nut->sp_count; k++) {
628  if (nus->keyframe_pts[k] == AV_NOPTS_VALUE)
629  continue;
630  av_assert0(nus->keyframe_pts[k] > last_pts);
631  put_v(bc, nus->keyframe_pts[k] - last_pts);
632  last_pts = nus->keyframe_pts[k];
633  }
634  }
635  }
636 
637  payload_size = avio_tell(bc) - startpos + 8 + 4;
638 
639  avio_wb64(bc, 8 + payload_size + av_log2(payload_size) / 7 + 1 + 4*(payload_size > 4096));
640 
641  return 0;
642 }
643 
645 {
646  NUTContext *nut = avctx->priv_data;
647  AVIOContext *dyn_bc;
648  int i, ret;
649 
651 
652  ret = avio_open_dyn_buf(&dyn_bc);
653  if (ret < 0)
654  return ret;
655  write_mainheader(nut, dyn_bc);
656  put_packet(nut, bc, dyn_bc, MAIN_STARTCODE);
657 
658  for (i = 0; i < nut->avf->nb_streams; i++) {
659  ret = write_streamheader(avctx, dyn_bc, nut->avf->streams[i], i);
660  if (ret < 0) {
661  goto fail;
662  }
663  put_packet(nut, bc, dyn_bc, STREAM_STARTCODE);
664  }
665 
666  write_globalinfo(nut, dyn_bc);
667  put_packet(nut, bc, dyn_bc, INFO_STARTCODE);
668 
669  for (i = 0; i < nut->avf->nb_streams; i++) {
670  ret = write_streaminfo(nut, dyn_bc, i);
671  if (ret > 0)
672  put_packet(nut, bc, dyn_bc, INFO_STARTCODE);
673  else if (ret < 0) {
674  goto fail;
675  }
676  }
677 
678  for (i = 0; i < nut->avf->nb_chapters; i++) {
679  ret = write_chapter(nut, dyn_bc, i);
680  if (ret < 0) {
681  goto fail;
682  }
683  put_packet(nut, bc, dyn_bc, INFO_STARTCODE);
684  }
685 
686  nut->last_syncpoint_pos = INT_MIN;
687  nut->header_count++;
688 
689  ret = 0;
690 fail:
691  ffio_free_dyn_buf(&dyn_bc);
692 
693  return ret;
694 }
695 
697 {
698  NUTContext *nut = s->priv_data;
699  AVIOContext *bc = s->pb;
700  int i, j, ret;
701 
702  nut->avf = s;
703 
704  nut->version = FFMAX(NUT_STABLE_VERSION, 3 + !!nut->flags);
705  if (nut->version > 3 && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
707  "The additional syncpoint modes require version %d, "
708  "that is currently not finalized, "
709  "please set -f_strict experimental in order to enable it.\n",
710  nut->version);
711  return AVERROR_EXPERIMENTAL;
712  }
713 
714  nut->stream = av_calloc(s->nb_streams, sizeof(*nut->stream ));
715  nut->chapter = av_calloc(s->nb_chapters, sizeof(*nut->chapter));
716  nut->time_base= av_calloc(s->nb_streams +
717  s->nb_chapters, sizeof(*nut->time_base));
718  if (!nut->stream || !nut->chapter || !nut->time_base)
719  return AVERROR(ENOMEM);
720 
721  for (i = 0; i < s->nb_streams; i++) {
722  AVStream *st = s->streams[i];
723  int ssize;
724  AVRational time_base;
725  ff_parse_specific_params(st, &time_base.den, &ssize, &time_base.num);
726 
728  time_base = (AVRational) {1, st->codecpar->sample_rate};
729  } else {
730  time_base = ff_choose_timebase(s, st, 48000);
731  }
732 
733  avpriv_set_pts_info(st, 64, time_base.num, time_base.den);
734 
735  for (j = 0; j < nut->time_base_count; j++)
736  if (!memcmp(&time_base, &nut->time_base[j], sizeof(AVRational))) {
737  break;
738  }
739  nut->time_base[j] = time_base;
740  nut->stream[i].time_base = &nut->time_base[j];
741  if (j == nut->time_base_count)
742  nut->time_base_count++;
743 
744  if (INT64_C(1000) * time_base.num >= time_base.den)
745  nut->stream[i].msb_pts_shift = 7;
746  else
747  nut->stream[i].msb_pts_shift = 14;
748  nut->stream[i].max_pts_distance =
749  FFMAX(time_base.den, time_base.num) / time_base.num;
750  }
751 
752  for (i = 0; i < s->nb_chapters; i++) {
753  AVChapter *ch = s->chapters[i];
754 
755  for (j = 0; j < nut->time_base_count; j++)
756  if (!memcmp(&ch->time_base, &nut->time_base[j], sizeof(AVRational)))
757  break;
758 
759  nut->time_base[j] = ch->time_base;
760  nut->chapter[i].time_base = &nut->time_base[j];
761  if (j == nut->time_base_count)
762  nut->time_base_count++;
763  }
764 
765  nut->max_distance = MAX_DISTANCE;
768  av_assert0(nut->frame_code['N'].flags == FLAG_INVALID);
769 
770  avio_write(bc, ID_STRING, strlen(ID_STRING));
771  avio_w8(bc, 0);
772 
773  if ((ret = write_headers(s, bc)) < 0)
774  return ret;
775 
776  if (s->avoid_negative_ts < 0)
777  s->avoid_negative_ts = 1;
778 
779  return 0;
780 }
781 
783  AVPacket *pkt)
784 {
785  int flags = 0;
786 
787  if (pkt->flags & AV_PKT_FLAG_KEY)
788  flags |= FLAG_KEY;
789  if (pkt->stream_index != fc->stream_id)
791  if (pkt->size / fc->size_mul)
792  flags |= FLAG_SIZE_MSB;
793  if (pkt->pts - nus->last_pts != fc->pts_delta)
795  if (pkt->side_data_elems && nut->version > 3)
796  flags |= FLAG_SM_DATA;
797  if (pkt->size > 2 * nut->max_distance)
798  flags |= FLAG_CHECKSUM;
799  if (FFABS(pkt->pts - nus->last_pts) > nus->max_pts_distance)
800  flags |= FLAG_CHECKSUM;
801  if (fc->header_idx)
802  if (pkt->size < nut->header_len[fc->header_idx] ||
803  pkt->size > 4096 ||
804  memcmp(pkt->data, nut->header [fc->header_idx],
805  nut->header_len[fc->header_idx]))
807 
808  return flags | (fc->flags & FLAG_CODED);
809 }
810 
812 {
813  int i;
814  int best_i = 0;
815  int best_len = 0;
816 
817  if (pkt->size > 4096)
818  return 0;
819 
820  for (i = 1; i < nut->header_count; i++)
821  if (pkt->size >= nut->header_len[i]
822  && nut->header_len[i] > best_len
823  && !memcmp(pkt->data, nut->header[i], nut->header_len[i])) {
824  best_i = i;
825  best_len = nut->header_len[i];
826  }
827  return best_i;
828 }
829 
830 static int write_sm_data(AVFormatContext *s, AVIOContext *bc, AVPacket *pkt, int is_meta)
831 {
832  int ret, i, dyn_size;
833  unsigned flags;
834  AVIOContext *dyn_bc;
835  int sm_data_count = 0;
836  uint8_t tmp[256];
837  uint8_t *dyn_buf;
838 
839  ret = avio_open_dyn_buf(&dyn_bc);
840  if (ret < 0)
841  return ret;
842 
843  for (i = 0; i<pkt->side_data_elems; i++) {
844  const uint8_t *data = pkt->side_data[i].data;
845  int size = pkt->side_data[i].size;
846  const uint8_t *data_end = data + size;
847 
848  if (is_meta) {
851  if (!size || data[size-1]) {
852  ret = AVERROR(EINVAL);
853  goto fail;
854  }
855  while (data < data_end) {
856  const uint8_t *key = data;
857  const uint8_t *val = data + strlen(key) + 1;
858 
859  if(val >= data_end) {
860  ret = AVERROR(EINVAL);
861  goto fail;
862  }
863  put_str(dyn_bc, key);
864  put_s(dyn_bc, -1);
865  put_str(dyn_bc, val);
866  data = val + strlen(val) + 1;
867  sm_data_count++;
868  }
869  }
870  } else {
871  switch (pkt->side_data[i].type) {
872  case AV_PKT_DATA_PALETTE:
875  default:
877  put_str(dyn_bc, "Palette");
878  } else if(pkt->side_data[i].type == AV_PKT_DATA_NEW_EXTRADATA) {
879  put_str(dyn_bc, "Extradata");
881  snprintf(tmp, sizeof(tmp), "CodecSpecificSide%"PRId64"", AV_RB64(data));
882  put_str(dyn_bc, tmp);
883  } else {
884  snprintf(tmp, sizeof(tmp), "UserData%s-SD-%d",
885  (s->flags & AVFMT_FLAG_BITEXACT) ? "Lavf" : LIBAVFORMAT_IDENT,
886  pkt->side_data[i].type);
887  put_str(dyn_bc, tmp);
888  }
889  put_s(dyn_bc, -2);
890  put_str(dyn_bc, "bin");
891  put_v(dyn_bc, pkt->side_data[i].size);
892  avio_write(dyn_bc, data, pkt->side_data[i].size);
893  sm_data_count++;
894  break;
896  flags = bytestream_get_le32(&data);
898  put_str(dyn_bc, "Channels");
899  put_s(dyn_bc, bytestream_get_le32(&data));
900  sm_data_count++;
901  }
903  put_str(dyn_bc, "ChannelLayout");
904  put_s(dyn_bc, -2);
905  put_str(dyn_bc, "u64");
906  put_v(dyn_bc, 8);
907  avio_write(dyn_bc, data, 8); data+=8;
908  sm_data_count++;
909  }
911  put_str(dyn_bc, "SampleRate");
912  put_s(dyn_bc, bytestream_get_le32(&data));
913  sm_data_count++;
914  }
916  put_str(dyn_bc, "Width");
917  put_s(dyn_bc, bytestream_get_le32(&data));
918  put_str(dyn_bc, "Height");
919  put_s(dyn_bc, bytestream_get_le32(&data));
920  sm_data_count+=2;
921  }
922  break;
924  if (AV_RL32(data)) {
925  put_str(dyn_bc, "SkipStart");
926  put_s(dyn_bc, (unsigned)AV_RL32(data));
927  sm_data_count++;
928  }
929  if (AV_RL32(data+4)) {
930  put_str(dyn_bc, "SkipEnd");
931  put_s(dyn_bc, (unsigned)AV_RL32(data+4));
932  sm_data_count++;
933  }
934  break;
938  // belongs into meta, not side data
939  break;
940  }
941  }
942  }
943 
944 fail:
945  put_v(bc, sm_data_count);
946  dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf);
947  avio_write(bc, dyn_buf, dyn_size);
948  av_freep(&dyn_buf);
949 
950  return ret;
951 }
952 
954 {
955  NUTContext *nut = s->priv_data;
956  StreamContext *nus = &nut->stream[pkt->stream_index];
957  AVIOContext *bc = s->pb, *dyn_bc, *sm_bc = NULL;
958  FrameCode *fc;
959  int64_t coded_pts;
960  int best_length, frame_code, flags, needed_flags, i, header_idx;
961  int best_header_idx;
962  int key_frame = !!(pkt->flags & AV_PKT_FLAG_KEY);
963  int store_sp = 0;
964  int ret = 0;
965  int sm_size = 0;
966  int data_size = pkt->size;
967  uint8_t *sm_buf = NULL;
968 
969  if (pkt->pts < 0) {
971  "Negative pts not supported stream %d, pts %"PRId64"\n",
972  pkt->stream_index, pkt->pts);
973  if (pkt->pts == AV_NOPTS_VALUE)
974  av_log(s, AV_LOG_ERROR, "Try to enable the genpts flag\n");
975  return AVERROR(EINVAL);
976  }
977 
978  if (pkt->side_data_elems && nut->version > 3) {
979  ret = avio_open_dyn_buf(&sm_bc);
980  if (ret < 0)
981  return ret;
982  ret = write_sm_data(s, sm_bc, pkt, 0);
983  if (ret >= 0)
984  ret = write_sm_data(s, sm_bc, pkt, 1);
985  sm_size = avio_close_dyn_buf(sm_bc, &sm_buf);
986  if (ret < 0)
987  goto fail;
988  data_size += sm_size;
989  }
990 
991  if (1LL << (20 + 3 * nut->header_count) <= avio_tell(bc))
992  write_headers(s, bc);
993 
994  if (key_frame && !(nus->last_flags & FLAG_KEY))
995  store_sp = 1;
996 
997  if (data_size + 30 /*FIXME check*/ + avio_tell(bc) >= nut->last_syncpoint_pos + nut->max_distance)
998  store_sp = 1;
999 
1000 //FIXME: Ensure store_sp is 1 in the first place.
1001 
1002  if (store_sp &&
1003  (!(nut->flags & NUT_PIPE) || nut->last_syncpoint_pos == INT_MIN)) {
1004  int64_t sp_pos = INT64_MAX;
1005 
1006  ff_nut_reset_ts(nut, *nus->time_base, pkt->dts);
1007  for (i = 0; i < s->nb_streams; i++) {
1008  AVStream *st = s->streams[i];
1009  int64_t dts_tb = av_rescale_rnd(pkt->dts,
1010  nus->time_base->num * (int64_t)nut->stream[i].time_base->den,
1011  nus->time_base->den * (int64_t)nut->stream[i].time_base->num,
1012  AV_ROUND_DOWN);
1013  int index = av_index_search_timestamp(st, dts_tb,
1015  if (index >= 0) {
1016  sp_pos = FFMIN(sp_pos, st->index_entries[index].pos);
1017  if (!nut->write_index && 2*index > st->nb_index_entries) {
1018  memmove(st->index_entries,
1019  st->index_entries + index,
1020  sizeof(*st->index_entries) * (st->nb_index_entries - index));
1021  st->nb_index_entries -= index;
1022  }
1023  }
1024  }
1025 
1026  nut->last_syncpoint_pos = avio_tell(bc);
1027  ret = avio_open_dyn_buf(&dyn_bc);
1028  if (ret < 0)
1029  goto fail;
1030  put_tt(nut, nus->time_base, dyn_bc, pkt->dts);
1031  put_v(dyn_bc, sp_pos != INT64_MAX ? (nut->last_syncpoint_pos - sp_pos) >> 4 : 0);
1032 
1033  if (nut->flags & NUT_BROADCAST) {
1034  put_tt(nut, nus->time_base, dyn_bc,
1036  }
1037  put_packet(nut, bc, dyn_bc, SYNCPOINT_STARTCODE);
1038  ffio_free_dyn_buf(&dyn_bc);
1039 
1040  if (nut->write_index) {
1041  if ((ret = ff_nut_add_sp(nut, nut->last_syncpoint_pos, 0 /*unused*/, pkt->dts)) < 0)
1042  goto fail;
1043 
1044  if ((1ll<<60) % nut->sp_count == 0)
1045  for (i=0; i<s->nb_streams; i++) {
1046  int j;
1047  StreamContext *nus = &nut->stream[i];
1048  av_reallocp_array(&nus->keyframe_pts, 2*nut->sp_count, sizeof(*nus->keyframe_pts));
1049  if (!nus->keyframe_pts) {
1050  ret = AVERROR(ENOMEM);
1051  goto fail;
1052  }
1053  for (j=nut->sp_count == 1 ? 0 : nut->sp_count; j<2*nut->sp_count; j++)
1054  nus->keyframe_pts[j] = AV_NOPTS_VALUE;
1055  }
1056  }
1057  }
1059 
1060  coded_pts = pkt->pts & ((1 << nus->msb_pts_shift) - 1);
1061  if (ff_lsb2full(nus, coded_pts) != pkt->pts)
1062  coded_pts = pkt->pts + (1 << nus->msb_pts_shift);
1063 
1064  best_header_idx = find_best_header_idx(nut, pkt);
1065 
1066  best_length = INT_MAX;
1067  frame_code = -1;
1068  for (i = 0; i < 256; i++) {
1069  int length = 0;
1070  FrameCode *fc = &nut->frame_code[i];
1071  int flags = fc->flags;
1072 
1073  if (flags & FLAG_INVALID)
1074  continue;
1075  needed_flags = get_needed_flags(nut, nus, fc, pkt);
1076 
1077  if (flags & FLAG_CODED) {
1078  length++;
1079  flags = needed_flags;
1080  }
1081 
1082  if ((flags & needed_flags) != needed_flags)
1083  continue;
1084 
1085  if ((flags ^ needed_flags) & FLAG_KEY)
1086  continue;
1087 
1088  if (flags & FLAG_STREAM_ID)
1089  length += get_v_length(pkt->stream_index);
1090 
1091  if (data_size % fc->size_mul != fc->size_lsb)
1092  continue;
1093  if (flags & FLAG_SIZE_MSB)
1094  length += get_v_length(data_size / fc->size_mul);
1095 
1096  if (flags & FLAG_CHECKSUM)
1097  length += 4;
1098 
1099  if (flags & FLAG_CODED_PTS)
1100  length += get_v_length(coded_pts);
1101 
1102  if ( (flags & FLAG_CODED)
1103  && nut->header_len[best_header_idx] > nut->header_len[fc->header_idx] + 1) {
1105  }
1106 
1107  if (flags & FLAG_HEADER_IDX) {
1108  length += 1 - nut->header_len[best_header_idx];
1109  } else {
1110  length -= nut->header_len[fc->header_idx];
1111  }
1112 
1113  length *= 4;
1114  length += !(flags & FLAG_CODED_PTS);
1115  length += !(flags & FLAG_CHECKSUM);
1116 
1117  if (length < best_length) {
1118  best_length = length;
1119  frame_code = i;
1120  }
1121  }
1122  av_assert0(frame_code != -1);
1123 
1124  fc = &nut->frame_code[frame_code];
1125  flags = fc->flags;
1126  needed_flags = get_needed_flags(nut, nus, fc, pkt);
1127  header_idx = fc->header_idx;
1128 
1130  avio_w8(bc, frame_code);
1131  if (flags & FLAG_CODED) {
1132  put_v(bc, (flags ^ needed_flags) & ~(FLAG_CODED));
1133  flags = needed_flags;
1134  }
1135  if (flags & FLAG_STREAM_ID) put_v(bc, pkt->stream_index);
1136  if (flags & FLAG_CODED_PTS) put_v(bc, coded_pts);
1137  if (flags & FLAG_SIZE_MSB ) put_v(bc, data_size / fc->size_mul);
1138  if (flags & FLAG_HEADER_IDX) put_v(bc, header_idx = best_header_idx);
1139 
1141  else ffio_get_checksum(bc);
1142 
1143  if (flags & FLAG_SM_DATA) {
1144  avio_write(bc, sm_buf, sm_size);
1145  }
1146  avio_write(bc, pkt->data + nut->header_len[header_idx], pkt->size - nut->header_len[header_idx]);
1147 
1148  nus->last_flags = flags;
1149  nus->last_pts = pkt->pts;
1150 
1151  //FIXME just store one per syncpoint
1152  if (flags & FLAG_KEY && !(nut->flags & NUT_PIPE)) {
1154  s->streams[pkt->stream_index],
1155  nut->last_syncpoint_pos,
1156  pkt->pts,
1157  0,
1158  0,
1160  if (nus->keyframe_pts && nus->keyframe_pts[nut->sp_count] == AV_NOPTS_VALUE)
1161  nus->keyframe_pts[nut->sp_count] = pkt->pts;
1162  }
1163 
1164  if (!nut->max_pts_tb || av_compare_ts(nut->max_pts, *nut->max_pts_tb, pkt->pts, *nus->time_base) < 0) {
1165  nut->max_pts = pkt->pts;
1166  nut->max_pts_tb = nus->time_base;
1167  }
1168 
1169 fail:
1170  av_freep(&sm_buf);
1171 
1172  return ret;
1173 }
1174 
1176 {
1177  NUTContext *nut = s->priv_data;
1178  AVIOContext *bc = s->pb, *dyn_bc;
1179  int ret;
1180 
1181  while (nut->header_count < 3)
1182  write_headers(s, bc);
1183 
1184  if (!nut->sp_count)
1185  return 0;
1186 
1187  ret = avio_open_dyn_buf(&dyn_bc);
1188  if (ret >= 0) {
1189  av_assert1(nut->write_index); // sp_count should be 0 if no index is going to be written
1190  write_index(nut, dyn_bc);
1191  put_packet(nut, bc, dyn_bc, INDEX_STARTCODE);
1192  ffio_free_dyn_buf(&dyn_bc);
1193  }
1194 
1195  return 0;
1196 }
1197 
1199 {
1200  NUTContext *nut = s->priv_data;
1201  int i;
1202 
1203  ff_nut_free_sp(nut);
1204  if (nut->stream)
1205  for (i=0; i<s->nb_streams; i++)
1206  av_freep(&nut->stream[i].keyframe_pts);
1207 
1208  av_freep(&nut->stream);
1209  av_freep(&nut->chapter);
1210  av_freep(&nut->time_base);
1211 }
1212 
1213 #define OFFSET(x) offsetof(NUTContext, x)
1214 #define E AV_OPT_FLAG_ENCODING_PARAM
1215 static const AVOption options[] = {
1216  { "syncpoints", "NUT syncpoint behaviour", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, E, "syncpoints" },
1217  { "default", "", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, INT_MIN, INT_MAX, E, "syncpoints" },
1218  { "none", "Disable syncpoints, low overhead and unseekable", 0, AV_OPT_TYPE_CONST, {.i64 = NUT_PIPE}, INT_MIN, INT_MAX, E, "syncpoints" },
1219  { "timestamped", "Extend syncpoints with a wallclock timestamp", 0, AV_OPT_TYPE_CONST, {.i64 = NUT_BROADCAST}, INT_MIN, INT_MAX, E, "syncpoints" },
1220  { "write_index", "Write index", OFFSET(write_index), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, E, },
1221  { NULL },
1222 };
1223 
1224 static const AVClass class = {
1225  .class_name = "nutenc",
1226  .item_name = av_default_item_name,
1227  .option = options,
1229 };
1230 
1232  .name = "nut",
1233  .long_name = NULL_IF_CONFIG_SMALL("NUT"),
1234  .mime_type = "video/x-nut",
1235  .extensions = "nut",
1236  .priv_data_size = sizeof(NUTContext),
1237  .audio_codec = CONFIG_LIBVORBIS ? AV_CODEC_ID_VORBIS :
1239  .video_codec = AV_CODEC_ID_MPEG4,
1243  .deinit = nut_write_deinit,
1245  .codec_tag = ff_nut_codec_tags,
1246  .priv_class = &class,
1247 };
static double val(void *priv, double ch)
Definition: aeval.c:76
uint8_t
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:1610
#define AVINDEX_KEYFRAME
Definition: avformat.h:811
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1380
#define AVFMT_VARIABLE_FPS
Format allows variable fps.
Definition: avformat.h:465
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:461
#define AVSEEK_FLAG_BACKWARD
Definition: avformat.h:2415
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:375
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:203
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1427
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:449
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:225
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1382
int avio_get_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1394
void ffio_init_checksum(AVIOContext *s, unsigned long(*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len), unsigned long checksum)
Definition: aviobuf.c:612
void ffio_free_dyn_buf(AVIOContext **s)
Free a dynamic buffer.
Definition: aviobuf.c:1457
unsigned long ffio_get_checksum(AVIOContext *s)
Definition: aviobuf.c:604
void ffio_reset_dyn_buf(AVIOContext *s)
Reset a dynamic buffer.
Definition: aviobuf.c:1416
unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf, unsigned int len)
Definition: aviobuf.c:586
#define AV_RL32
Definition: intreadwrite.h:146
#define AV_RB64
Definition: intreadwrite.h:164
#define flag(name)
Definition: cbs_av1.c:564
#define flags(name, subs,...)
Definition: cbs_av1.c:572
#define fc(width, name, range_min, range_max)
Definition: cbs_av1.c:562
#define s(width, name)
Definition: cbs_vp9.c:257
#define f(width, name)
Definition: cbs_vp9.c:255
#define fail()
Definition: checkasm.h:133
#define FFMIN(a, b)
Definition: common.h:105
#define FFMAX(a, b)
Definition: common.h:103
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
#define CONFIG_LIBVORBIS
Definition: config.h:503
#define CONFIG_LIBMP3LAME
Definition: config.h:474
#define NULL
Definition: coverity.c:32
long long int64_t
Definition: coverity.c:34
Public dictionary API.
double value
Definition: eval.c:98
enum AVCodecID id
#define ID_STRING
Definition: ffmeta.h:25
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:730
sample_rate
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
static int64_t last_pts
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
@ AV_OPT_TYPE_FLAGS
Definition: opt.h:224
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
@ AV_CODEC_ID_VORBIS
Definition: codec_id.h:429
@ AV_CODEC_ID_H264
Definition: codec_id.h:76
@ AV_CODEC_ID_MP2
Definition: codec_id.h:424
@ AV_CODEC_ID_MPEG4
Definition: codec_id.h:61
@ AV_CODEC_ID_MP3
preferred ID for decoding MPEG audio layer 1, 2 or 3
Definition: codec_id.h:425
@ AV_CODEC_ID_MPEG1VIDEO
Definition: codec_id.h:50
@ AV_CODEC_ID_MPEG2VIDEO
preferred ID for MPEG-1/2 video decoding
Definition: codec_id.h:51
int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
This function is the same as av_get_audio_frame_duration(), except it works with AVCodecParameters in...
Definition: utils.c:874
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:410
@ AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT
Definition: packet.h:432
@ AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT
Definition: packet.h:433
@ AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE
Definition: packet.h:434
@ AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS
Definition: packet.h:435
@ AV_PKT_DATA_STRINGS_METADATA
A list of zero terminated key/value strings.
Definition: packet.h:172
@ AV_PKT_DATA_SKIP_SAMPLES
Recommmends skipping the specified number of samples.
Definition: packet.h:156
@ AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL
Data found in BlockAdditional element of matroska container.
Definition: packet.h:191
@ AV_PKT_DATA_QUALITY_STATS
This side data contains quality related information from the encoder.
Definition: packet.h:132
@ AV_PKT_DATA_METADATA_UPDATE
A list of zero terminated key/value strings.
Definition: packet.h:209
@ AV_PKT_DATA_PALETTE
An AV_PKT_DATA_PALETTE side data packet contains exactly AVPALETTE_SIZE bytes worth of palette.
Definition: packet.h:46
@ AV_PKT_DATA_NEW_EXTRADATA
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
Definition: packet.h:55
@ AV_PKT_DATA_PARAM_CHANGE
An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
Definition: packet.h:72
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add an index entry into a sorted list.
Definition: utils.c:2013
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags)
Get the index for a specific timestamp.
Definition: utils.c:2130
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key,...
Definition: dict.h:70
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
#define AVERROR_EXPERIMENTAL
Requested feature is flagged experimental. Set strict_std_compliance if you really want to use it.
Definition: error.h:72
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
AVRational av_div_q(AVRational b, AVRational c)
Divide one rational by another.
Definition: rational.c:88
int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b)
Compare two timestamps each in its own time base.
Definition: mathematics.c:147
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd)
Rescale a 64-bit integer with specified rounding.
Definition: mathematics.c:58
@ AV_ROUND_DOWN
Round toward -infinity.
Definition: mathematics.h:82
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
Definition: mem.c:245
int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
Allocate, reallocate, or free an array through a pointer to a pointer.
Definition: mem.c:206
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
@ AVMEDIA_TYPE_SUBTITLE
Definition: avutil.h:204
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
int index
Definition: gxfenc.c:89
cl_device_type type
const char * key
int i
Definition: input.c:407
#define av_log2
Definition: intmath.h:83
#define AV_WB24(p, d)
Definition: intreadwrite.h:450
#define AV_WB32(p, v)
Definition: intreadwrite.h:419
frame_type
AVRational ff_choose_timebase(AVFormatContext *s, AVStream *st, int min_precision)
Chooses a timebase for muxing the specified stream.
Definition: mux.c:90
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4945
int ff_standardize_creation_time(AVFormatContext *s)
Standardize creation_time metadata in AVFormatContext to an ISO-8601 timestamp string.
Definition: utils.c:5721
void ff_metadata_conv_ctx(AVFormatContext *ctx, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:59
#define LIBAVFORMAT_IDENT
Definition: version.h:46
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
int dummy
Definition: motion.c:64
const uint16_t avpriv_mpa_freq_tab[3]
Definition: mpegaudiodata.c:40
const uint16_t avpriv_mpa_bitrate_tab[2][3][15]
Definition: mpegaudiodata.c:30
mpeg audio layer common tables.
const char data[16]
Definition: mxf.c:142
int frame_size
Definition: mxfenc.c:2206
int intra_only
Definition: mxfenc.c:2209
void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val)
Definition: nut.c:255
int ff_nut_sp_pos_cmp(const void *a, const void *b)
Definition: nut.c:273
int64_t ff_lsb2full(StreamContext *stream, int64_t lsb)
Definition: nut.c:266
int ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts)
Definition: nut.c:285
const AVCodecTag *const ff_nut_codec_tags[]
Definition: nut.c:250
void ff_nut_free_sp(NUTContext *nut)
Definition: nut.c:316
const Dispositions ff_nut_dispositions[]
Definition: nut.c:324
const AVMetadataConv ff_nut_metadata_conv[]
Definition: nut.c:334
#define MAX_DISTANCE
Definition: nut.h:37
#define SYNCPOINT_STARTCODE
Definition: nut.h:31
@ FLAG_CHECKSUM
Definition: nut.h:49
@ FLAG_HEADER_IDX
Definition: nut.h:52
@ FLAG_KEY
Definition: nut.h:44
@ FLAG_SM_DATA
Definition: nut.h:51
@ FLAG_CODED_PTS
Definition: nut.h:46
@ FLAG_SIZE_MSB
Definition: nut.h:48
@ FLAG_INVALID
Definition: nut.h:55
@ FLAG_CODED
Definition: nut.h:54
@ FLAG_STREAM_ID
Definition: nut.h:47
#define NUT_BROADCAST
Definition: nut.h:113
#define STREAM_STARTCODE
Definition: nut.h:30
#define NUT_STABLE_VERSION
Definition: nut.h:40
#define MAIN_STARTCODE
Definition: nut.h:29
#define NUT_PIPE
Definition: nut.h:114
#define INDEX_STARTCODE
Definition: nut.h:32
#define INFO_STARTCODE
Definition: nut.h:33
static int write_headers(AVFormatContext *avctx, AVIOContext *bc)
Definition: nutenc.c:644
#define E
Definition: nutenc.c:1214
static int get_v_length(uint64_t val)
Get the length in bytes which is needed to store val as v.
Definition: nutenc.c:283
static int write_streaminfo(NUTContext *nut, AVIOContext *bc, int stream_id)
Definition: nutenc.c:522
static void nut_write_deinit(AVFormatContext *s)
Definition: nutenc.c:1198
static int get_needed_flags(NUTContext *nut, StreamContext *nus, FrameCode *fc, AVPacket *pkt)
Definition: nutenc.c:782
static int write_index(NUTContext *nut, AVIOContext *bc)
Definition: nutenc.c:592
static void put_packet(NUTContext *nut, AVIOContext *bc, AVIOContext *dyn_bc, uint64_t startcode)
Definition: nutenc.c:328
static void build_elision_headers(AVFormatContext *s)
Definition: nutenc.c:122
static const AVOption options[]
Definition: nutenc.c:1215
static int add_info(AVIOContext *bc, const char *type, const char *value)
Definition: nutenc.c:486
static int write_streamheader(AVFormatContext *avctx, AVIOContext *bc, AVStream *st, int i)
Definition: nutenc.c:429
static void put_v(AVIOContext *bc, uint64_t val)
Put val using a variable number of bytes.
Definition: nutenc.c:296
static void build_frame_code(AVFormatContext *s)
Definition: nutenc.c:144
static int write_sm_data(AVFormatContext *s, AVIOContext *bc, AVPacket *pkt, int is_meta)
Definition: nutenc.c:830
static int write_chapter(NUTContext *nut, AVIOContext *bc, int id)
Definition: nutenc.c:564
static int find_header_idx(AVFormatContext *s, AVCodecParameters *p, int size, int frame_type)
Definition: nutenc.c:105
static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: nutenc.c:953
static int write_globalinfo(NUTContext *nut, AVIOContext *bc)
Definition: nutenc.c:494
static int find_expected_header(AVCodecParameters *p, int size, int key_frame, uint8_t out[64])
Definition: nutenc.c:38
static void put_s(AVIOContext *bc, int64_t val)
Definition: nutenc.c:323
AVOutputFormat ff_nut_muxer
Definition: nutenc.c:1231
static int nut_write_header(AVFormatContext *s)
Definition: nutenc.c:696
static int find_best_header_idx(NUTContext *nut, AVPacket *pkt)
Definition: nutenc.c:811
static void put_tt(NUTContext *nut, AVRational *time_base, AVIOContext *bc, uint64_t val)
Definition: nutenc.c:306
#define OFFSET(x)
Definition: nutenc.c:1213
static int nut_write_trailer(AVFormatContext *s)
Definition: nutenc.c:1175
static void put_str(AVIOContext *bc, const char *string)
Store a string as vb.
Definition: nutenc.c:315
static void write_mainheader(NUTContext *nut, AVIOContext *bc)
Definition: nutenc.c:349
AVOptions.
internal header for RIFF based (de)muxers do NOT include this in end user applications
void ff_parse_specific_params(AVStream *st, int *au_rate, int *au_ssize, int *au_scale)
Definition: riffenc.c:272
static const uint8_t header[24]
Definition: sdr2.c:67
static const float pred[4]
Definition: siprdata.h:259
#define snprintf
Definition: snprintf.h:34
unsigned int pos
Definition: spdifenc.c:412
int64_t start
Definition: avformat.h:1192
AVDictionary * metadata
Definition: avformat.h:1193
int64_t end
chapter start/end time in time_base units
Definition: avformat.h:1192
AVRational time_base
time base in which the start/end timestamps are specified
Definition: avformat.h:1191
Describe the class of an AVClass context structure.
Definition: log.h:67
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
int channels
Audio only.
Definition: codec_par.h:166
int width
Video only.
Definition: codec_par.h:126
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
int video_delay
Video only.
Definition: codec_par.h:155
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
int sample_rate
Audio only.
Definition: codec_par.h:170
char * key
Definition: dict.h:82
char * value
Definition: dict.h:83
Format I/O context.
Definition: avformat.h:1232
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1288
unsigned int nb_chapters
Number of chapters in AVChapter array.
Definition: avformat.h:1463
AVChapter ** chapters
Definition: avformat.h:1464
void * priv_data
Format private data.
Definition: avformat.h:1260
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1300
Bytestream IO Context.
Definition: avio.h:161
int64_t pos
Definition: avformat.h:804
AVOption.
Definition: opt.h:248
const char * name
Definition: avformat.h:491
uint8_t * data
Definition: packet.h:307
enum AVPacketSideDataType type
Definition: packet.h:313
size_t size
Definition: packet.h:311
This structure stores compressed data.
Definition: packet.h:346
int stream_index
Definition: packet.h:371
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:375
int size
Definition: packet.h:370
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:362
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:368
uint8_t * data
Definition: packet.h:369
AVPacketSideData * side_data
Additional packet data that can be provided by the container.
Definition: packet.h:380
int side_data_elems
Definition: packet.h:381
Rational number (pair of numerator and denominator).
Definition: rational.h:58
int num
Numerator.
Definition: rational.h:59
int den
Denominator.
Definition: rational.h:60
Stream structure.
Definition: avformat.h:873
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1038
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:935
AVDictionary * metadata
Definition: avformat.h:937
int nb_index_entries
Definition: avformat.h:1092
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:946
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
Definition: avformat.h:1090
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:1015
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:926
AVRational * time_base
Definition: nut.h:88
int flag
Definition: nut.h:130
Definition: nut.h:65
uint8_t header_idx
Definition: nut.h:72
uint16_t flags
Definition: nut.h:66
int16_t pts_delta
Definition: nut.h:70
uint16_t size_mul
Definition: nut.h:68
uint8_t stream_id
Definition: nut.h:67
uint16_t size_lsb
Definition: nut.h:69
Definition: nut.h:91
ChapterContext * chapter
Definition: nut.h:101
const uint8_t * header[128]
Definition: nut.h:98
int flags
Definition: nut.h:115
AVRational * max_pts_tb
Definition: nut.h:112
AVRational * time_base
Definition: nut.h:107
StreamContext * stream
Definition: nut.h:100
int header_count
Definition: nut.h:106
AVFormatContext * avf
Definition: nut.h:93
struct AVTreeNode * syncpoints
Definition: nut.h:108
int minor_version
Definition: nut.h:117
int version
Definition: nut.h:116
FrameCode frame_code[256]
Definition: nut.h:96
int64_t max_pts
Definition: nut.h:111
unsigned int max_distance
Definition: nut.h:102
uint8_t header_len[128]
Definition: nut.h:97
int64_t last_syncpoint_pos
Definition: nut.h:104
int sp_count
Definition: nut.h:109
int write_index
Definition: nut.h:110
unsigned int time_base_count
Definition: nut.h:103
AVRational time_base
Definition: signature.h:103
int max_pts_distance
Definition: nut.h:82
int64_t * keyframe_pts
Definition: nut.h:84
int msb_pts_shift
Definition: nut.h:81
int last_flags
Definition: nut.h:76
int64_t last_pts
Definition: nut.h:78
Definition: nut.h:58
#define av_free(p)
#define av_freep(p)
#define av_log(a,...)
static uint8_t tmp[11]
Definition: aes_ctr.c:27
FILE * out
Definition: movenc.c:54
AVPacket * pkt
Definition: movenc.c:59
int64_t av_gettime(void)
Get the current time in microseconds.
Definition: time.c:39
static int64_t pts
void * av_tree_find(const AVTreeNode *t, void *key, int(*cmp)(const void *key, const void *b), void *next[2])
Definition: tree.c:39
A tree container.
int size
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
if(ret< 0)
Definition: vf_mcdeint.c:282
int len