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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;
111  int len = find_expected_header(p, size, frame_type, out);
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 static void put_tt(NUTContext *nut, AVRational *time_base, AVIOContext *bc, uint64_t val)
281 {
282  val *= nut->time_base_count;
283  val += time_base - nut->time_base;
284  ff_put_v(bc, val);
285 }
286 /**
287  * Store a string as vb.
288  */
289 static void put_str(AVIOContext *bc, const char *string)
290 {
291  size_t len = strlen(string);
292 
293  ff_put_v(bc, len);
294  avio_write(bc, string, len);
295 }
296 
297 static void put_s(AVIOContext *bc, int64_t val)
298 {
299  ff_put_v(bc, 2 * FFABS(val) - (val > 0));
300 }
301 
302 //FIXME remove calculate_checksum
303 static void put_packet(NUTContext *nut, AVIOContext *bc, AVIOContext *dyn_bc,
304  int calculate_checksum, uint64_t startcode)
305 {
306  uint8_t *dyn_buf = NULL;
307  int dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf);
308  int forw_ptr = dyn_size + 4 * calculate_checksum;
309 
310  if (forw_ptr > 4096)
312  avio_wb64(bc, startcode);
313  ff_put_v(bc, forw_ptr);
314  if (forw_ptr > 4096)
315  avio_wl32(bc, ffio_get_checksum(bc));
316 
317  if (calculate_checksum)
319  avio_write(bc, dyn_buf, dyn_size);
320  if (calculate_checksum)
321  avio_wl32(bc, ffio_get_checksum(bc));
322 
323  av_free(dyn_buf);
324 }
325 
327 {
328  int i, j, tmp_pts, tmp_flags, tmp_stream, tmp_mul, tmp_size, tmp_fields,
329  tmp_head_idx;
330  int64_t tmp_match;
331 
332  ff_put_v(bc, nut->version);
333  if (nut->version > 3)
334  ff_put_v(bc, nut->minor_version = 1);
335  ff_put_v(bc, nut->avf->nb_streams);
336  ff_put_v(bc, nut->max_distance);
337  ff_put_v(bc, nut->time_base_count);
338 
339  for (i = 0; i < nut->time_base_count; i++) {
340  ff_put_v(bc, nut->time_base[i].num);
341  ff_put_v(bc, nut->time_base[i].den);
342  }
343 
344  tmp_pts = 0;
345  tmp_mul = 1;
346  tmp_stream = 0;
347  tmp_match = 1 - (1LL << 62);
348  tmp_head_idx = 0;
349  for (i = 0; i < 256; ) {
350  tmp_fields = 0;
351  tmp_size = 0;
352 // tmp_res=0;
353  if (tmp_pts != nut->frame_code[i].pts_delta ) tmp_fields = 1;
354  if (tmp_mul != nut->frame_code[i].size_mul ) tmp_fields = 2;
355  if (tmp_stream != nut->frame_code[i].stream_id ) tmp_fields = 3;
356  if (tmp_size != nut->frame_code[i].size_lsb ) tmp_fields = 4;
357 // if (tmp_res != nut->frame_code[i].res ) tmp_fields=5;
358  if (tmp_head_idx != nut->frame_code[i].header_idx) tmp_fields = 8;
359 
360  tmp_pts = nut->frame_code[i].pts_delta;
361  tmp_flags = nut->frame_code[i].flags;
362  tmp_stream = nut->frame_code[i].stream_id;
363  tmp_mul = nut->frame_code[i].size_mul;
364  tmp_size = nut->frame_code[i].size_lsb;
365 // tmp_res = nut->frame_code[i].res;
366  tmp_head_idx = nut->frame_code[i].header_idx;
367 
368  for (j = 0; i < 256; j++, i++) {
369  if (i == 'N') {
370  j--;
371  continue;
372  }
373  if (nut->frame_code[i].pts_delta != tmp_pts ||
374  nut->frame_code[i].flags != tmp_flags ||
375  nut->frame_code[i].stream_id != tmp_stream ||
376  nut->frame_code[i].size_mul != tmp_mul ||
377  nut->frame_code[i].size_lsb != tmp_size + j ||
378 // nut->frame_code[i].res != tmp_res ||
379  nut->frame_code[i].header_idx != tmp_head_idx)
380  break;
381  }
382  if (j != tmp_mul - tmp_size)
383  tmp_fields = 6;
384 
385  ff_put_v(bc, tmp_flags);
386  ff_put_v(bc, tmp_fields);
387  if (tmp_fields > 0) put_s(bc, tmp_pts);
388  if (tmp_fields > 1) ff_put_v(bc, tmp_mul);
389  if (tmp_fields > 2) ff_put_v(bc, tmp_stream);
390  if (tmp_fields > 3) ff_put_v(bc, tmp_size);
391  if (tmp_fields > 4) ff_put_v(bc, 0 /*tmp_res*/);
392  if (tmp_fields > 5) ff_put_v(bc, j);
393  if (tmp_fields > 6) ff_put_v(bc, tmp_match);
394  if (tmp_fields > 7) ff_put_v(bc, tmp_head_idx);
395  }
396  ff_put_v(bc, nut->header_count - 1);
397  for (i = 1; i < nut->header_count; i++) {
398  ff_put_v(bc, nut->header_len[i]);
399  avio_write(bc, nut->header[i], nut->header_len[i]);
400  }
401  // flags had been effectively introduced in version 4
402  if (nut->version > 3)
403  ff_put_v(bc, nut->flags);
404 }
405 
407  AVStream *st, int i)
408 {
409  NUTContext *nut = avctx->priv_data;
410  AVCodecParameters *par = st->codecpar;
411 
412  ff_put_v(bc, i);
413  switch (par->codec_type) {
414  case AVMEDIA_TYPE_VIDEO: ff_put_v(bc, 0); break;
415  case AVMEDIA_TYPE_AUDIO: ff_put_v(bc, 1); break;
416  case AVMEDIA_TYPE_SUBTITLE: ff_put_v(bc, 2); break;
417  default: ff_put_v(bc, 3); break;
418  }
419  ff_put_v(bc, 4);
420 
421  if (par->codec_tag) {
422  avio_wl32(bc, par->codec_tag);
423  } else {
424  av_log(avctx, AV_LOG_ERROR, "No codec tag defined for stream %d\n", i);
425  return AVERROR(EINVAL);
426  }
427 
428  ff_put_v(bc, nut->stream[i].time_base - nut->time_base);
429  ff_put_v(bc, nut->stream[i].msb_pts_shift);
430  ff_put_v(bc, nut->stream[i].max_pts_distance);
431  ff_put_v(bc, par->video_delay);
432  avio_w8(bc, 0); /* flags: 0x1 - fixed_fps, 0x2 - index_present */
433 
434  ff_put_v(bc, par->extradata_size);
435  avio_write(bc, par->extradata, par->extradata_size);
436 
437  switch (par->codec_type) {
438  case AVMEDIA_TYPE_AUDIO:
439  ff_put_v(bc, par->sample_rate);
440  ff_put_v(bc, 1);
441  ff_put_v(bc, par->channels);
442  break;
443  case AVMEDIA_TYPE_VIDEO:
444  ff_put_v(bc, par->width);
445  ff_put_v(bc, par->height);
446 
447  if (st->sample_aspect_ratio.num <= 0 ||
448  st->sample_aspect_ratio.den <= 0) {
449  ff_put_v(bc, 0);
450  ff_put_v(bc, 0);
451  } else {
454  }
455  ff_put_v(bc, 0); /* csp type -- unknown */
456  break;
457  default:
458  break;
459  }
460  return 0;
461 }
462 
463 static int add_info(AVIOContext *bc, const char *type, const char *value)
464 {
465  put_str(bc, type);
466  put_s(bc, -1);
467  put_str(bc, value);
468  return 1;
469 }
470 
472 {
473  AVFormatContext *s = nut->avf;
474  AVDictionaryEntry *t = NULL;
475  AVIOContext *dyn_bc;
476  uint8_t *dyn_buf = NULL;
477  int count = 0, dyn_size;
478  int ret = avio_open_dyn_buf(&dyn_bc);
479  if (ret < 0)
480  return ret;
481 
483  while ((t = av_dict_get(s->metadata, "", t, AV_DICT_IGNORE_SUFFIX)))
484  count += add_info(dyn_bc, t->key, t->value);
485 
486  ff_put_v(bc, 0); //stream_if_plus1
487  ff_put_v(bc, 0); //chapter_id
488  ff_put_v(bc, 0); //timestamp_start
489  ff_put_v(bc, 0); //length
490 
491  ff_put_v(bc, count);
492 
493  dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf);
494  avio_write(bc, dyn_buf, dyn_size);
495  av_free(dyn_buf);
496  return 0;
497 }
498 
499 static int write_streaminfo(NUTContext *nut, AVIOContext *bc, int stream_id) {
500  AVFormatContext *s= nut->avf;
501  AVStream* st = s->streams[stream_id];
502  AVDictionaryEntry *t = NULL;
503  AVIOContext *dyn_bc;
504  uint8_t *dyn_buf=NULL;
505  int count=0, dyn_size, i;
506  int ret = avio_open_dyn_buf(&dyn_bc);
507  if (ret < 0)
508  return ret;
509 
510  while ((t = av_dict_get(st->metadata, "", t, AV_DICT_IGNORE_SUFFIX)))
511  count += add_info(dyn_bc, t->key, t->value);
512  for (i=0; ff_nut_dispositions[i].flag; ++i) {
513  if (st->disposition & ff_nut_dispositions[i].flag)
514  count += add_info(dyn_bc, "Disposition", ff_nut_dispositions[i].str);
515  }
516  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
517  uint8_t buf[256];
518  if (st->r_frame_rate.num>0 && st->r_frame_rate.den>0)
519  snprintf(buf, sizeof(buf), "%d/%d", st->r_frame_rate.num, st->r_frame_rate.den);
520  else
521  snprintf(buf, sizeof(buf), "%d/%d", st->avg_frame_rate.num, st->avg_frame_rate.den);
522  count += add_info(dyn_bc, "r_frame_rate", buf);
523  }
524  dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf);
525 
526  if (count) {
527  ff_put_v(bc, stream_id + 1); //stream_id_plus1
528  ff_put_v(bc, 0); //chapter_id
529  ff_put_v(bc, 0); //timestamp_start
530  ff_put_v(bc, 0); //length
531 
532  ff_put_v(bc, count);
533 
534  avio_write(bc, dyn_buf, dyn_size);
535  }
536 
537  av_free(dyn_buf);
538  return count;
539 }
540 
541 static int write_chapter(NUTContext *nut, AVIOContext *bc, int id)
542 {
543  AVIOContext *dyn_bc;
544  uint8_t *dyn_buf = NULL;
545  AVDictionaryEntry *t = NULL;
546  AVChapter *ch = nut->avf->chapters[id];
547  int ret, dyn_size, count = 0;
548 
549  ret = avio_open_dyn_buf(&dyn_bc);
550  if (ret < 0)
551  return ret;
552 
553  ff_put_v(bc, 0); // stream_id_plus1
554  put_s(bc, id + 1); // chapter_id
555  put_tt(nut, nut->chapter[id].time_base, bc, ch->start); // chapter_start
556  ff_put_v(bc, ch->end - ch->start); // chapter_len
557 
558  while ((t = av_dict_get(ch->metadata, "", t, AV_DICT_IGNORE_SUFFIX)))
559  count += add_info(dyn_bc, t->key, t->value);
560 
561  ff_put_v(bc, count);
562 
563  dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf);
564  avio_write(bc, dyn_buf, dyn_size);
565  av_freep(&dyn_buf);
566  return 0;
567 }
568 
569 static int write_index(NUTContext *nut, AVIOContext *bc) {
570  int i;
571  Syncpoint dummy= { .pos= 0 };
572  Syncpoint *next_node[2] = { NULL };
573  int64_t startpos = avio_tell(bc);
574  int64_t payload_size;
575 
576  put_tt(nut, nut->max_pts_tb, bc, nut->max_pts);
577 
578  ff_put_v(bc, nut->sp_count);
579 
580  for (i=0; i<nut->sp_count; i++) {
581  av_tree_find(nut->syncpoints, &dummy, ff_nut_sp_pos_cmp, (void**)next_node);
582  ff_put_v(bc, (next_node[1]->pos >> 4) - (dummy.pos>>4));
583  dummy.pos = next_node[1]->pos;
584  }
585 
586  for (i=0; i<nut->avf->nb_streams; i++) {
587  StreamContext *nus= &nut->stream[i];
588  int64_t last_pts= -1;
589  int j, k;
590  for (j=0; j<nut->sp_count; j++) {
591  int flag;
592  int n = 0;
593 
594  if (j && nus->keyframe_pts[j] == nus->keyframe_pts[j-1]) {
595  av_log(nut->avf, AV_LOG_WARNING, "Multiple keyframes with same PTS\n");
596  nus->keyframe_pts[j] = AV_NOPTS_VALUE;
597  }
598 
599  flag = (nus->keyframe_pts[j] != AV_NOPTS_VALUE) ^ (j+1 == nut->sp_count);
600  for (; j<nut->sp_count && (nus->keyframe_pts[j] != AV_NOPTS_VALUE) == flag; j++)
601  n++;
602 
603  ff_put_v(bc, 1 + 2*flag + 4*n);
604  for (k= j - n; k<=j && k<nut->sp_count; k++) {
605  if (nus->keyframe_pts[k] == AV_NOPTS_VALUE)
606  continue;
607  av_assert0(nus->keyframe_pts[k] > last_pts);
608  ff_put_v(bc, nus->keyframe_pts[k] - last_pts);
609  last_pts = nus->keyframe_pts[k];
610  }
611  }
612  }
613 
614  payload_size = avio_tell(bc) - startpos + 8 + 4;
615 
616  avio_wb64(bc, 8 + payload_size + av_log2(payload_size) / 7 + 1 + 4*(payload_size > 4096));
617 
618  return 0;
619 }
620 
622 {
623  NUTContext *nut = avctx->priv_data;
624  AVIOContext *dyn_bc;
625  int i, ret;
626 
628 
629  ret = avio_open_dyn_buf(&dyn_bc);
630  if (ret < 0)
631  return ret;
632  write_mainheader(nut, dyn_bc);
633  put_packet(nut, bc, dyn_bc, 1, MAIN_STARTCODE);
634 
635  for (i = 0; i < nut->avf->nb_streams; i++) {
636  ret = avio_open_dyn_buf(&dyn_bc);
637  if (ret < 0)
638  return ret;
639  ret = write_streamheader(avctx, dyn_bc, nut->avf->streams[i], i);
640  if (ret < 0)
641  return ret;
642  put_packet(nut, bc, dyn_bc, 1, STREAM_STARTCODE);
643  }
644 
645  ret = avio_open_dyn_buf(&dyn_bc);
646  if (ret < 0)
647  return ret;
648  write_globalinfo(nut, dyn_bc);
649  put_packet(nut, bc, dyn_bc, 1, INFO_STARTCODE);
650 
651  for (i = 0; i < nut->avf->nb_streams; i++) {
652  ret = avio_open_dyn_buf(&dyn_bc);
653  if (ret < 0)
654  return ret;
655  ret = write_streaminfo(nut, dyn_bc, i);
656  if (ret < 0)
657  return ret;
658  if (ret > 0)
659  put_packet(nut, bc, dyn_bc, 1, INFO_STARTCODE);
660  else
661  ffio_free_dyn_buf(&dyn_bc);
662  }
663 
664  for (i = 0; i < nut->avf->nb_chapters; i++) {
665  ret = avio_open_dyn_buf(&dyn_bc);
666  if (ret < 0)
667  return ret;
668  ret = write_chapter(nut, dyn_bc, i);
669  if (ret < 0) {
670  ffio_free_dyn_buf(&dyn_bc);
671  return ret;
672  }
673  put_packet(nut, bc, dyn_bc, 1, INFO_STARTCODE);
674  }
675 
676  nut->last_syncpoint_pos = INT_MIN;
677  nut->header_count++;
678  return 0;
679 }
680 
682 {
683  NUTContext *nut = s->priv_data;
684  AVIOContext *bc = s->pb;
685  int i, j, ret;
686 
687  nut->avf = s;
688 
689  nut->version = FFMAX(NUT_STABLE_VERSION, 3 + !!nut->flags);
691  av_log(s, AV_LOG_ERROR,
692  "The additional syncpoint modes require version %d, "
693  "that is currently not finalized, "
694  "please set -f_strict experimental in order to enable it.\n",
695  nut->version);
696  return AVERROR_EXPERIMENTAL;
697  }
698 
699  nut->stream = av_calloc(s->nb_streams, sizeof(*nut->stream ));
700  nut->chapter = av_calloc(s->nb_chapters, sizeof(*nut->chapter));
701  nut->time_base= av_calloc(s->nb_streams +
702  s->nb_chapters, sizeof(*nut->time_base));
703  if (!nut->stream || !nut->chapter || !nut->time_base) {
704  av_freep(&nut->stream);
705  av_freep(&nut->chapter);
706  av_freep(&nut->time_base);
707  return AVERROR(ENOMEM);
708  }
709 
710  for (i = 0; i < s->nb_streams; i++) {
711  AVStream *st = s->streams[i];
712  int ssize;
713  AVRational time_base;
714  ff_parse_specific_params(st, &time_base.den, &ssize, &time_base.num);
715 
717  time_base = (AVRational) {1, st->codecpar->sample_rate};
718  } else {
719  time_base = ff_choose_timebase(s, st, 48000);
720  }
721 
722  avpriv_set_pts_info(st, 64, time_base.num, time_base.den);
723 
724  for (j = 0; j < nut->time_base_count; j++)
725  if (!memcmp(&time_base, &nut->time_base[j], sizeof(AVRational))) {
726  break;
727  }
728  nut->time_base[j] = time_base;
729  nut->stream[i].time_base = &nut->time_base[j];
730  if (j == nut->time_base_count)
731  nut->time_base_count++;
732 
733  if (INT64_C(1000) * time_base.num >= time_base.den)
734  nut->stream[i].msb_pts_shift = 7;
735  else
736  nut->stream[i].msb_pts_shift = 14;
737  nut->stream[i].max_pts_distance =
738  FFMAX(time_base.den, time_base.num) / time_base.num;
739  }
740 
741  for (i = 0; i < s->nb_chapters; i++) {
742  AVChapter *ch = s->chapters[i];
743 
744  for (j = 0; j < nut->time_base_count; j++)
745  if (!memcmp(&ch->time_base, &nut->time_base[j], sizeof(AVRational)))
746  break;
747 
748  nut->time_base[j] = ch->time_base;
749  nut->chapter[i].time_base = &nut->time_base[j];
750  if (j == nut->time_base_count)
751  nut->time_base_count++;
752  }
753 
754  nut->max_distance = MAX_DISTANCE;
756  build_frame_code(s);
757  av_assert0(nut->frame_code['N'].flags == FLAG_INVALID);
758 
759  avio_write(bc, ID_STRING, strlen(ID_STRING));
760  avio_w8(bc, 0);
761 
762  if ((ret = write_headers(s, bc)) < 0)
763  return ret;
764 
765  if (s->avoid_negative_ts < 0)
766  s->avoid_negative_ts = 1;
767 
768  avio_flush(bc);
769 
770  return 0;
771 }
772 
774  AVPacket *pkt)
775 {
776  int flags = 0;
777 
778  if (pkt->flags & AV_PKT_FLAG_KEY)
779  flags |= FLAG_KEY;
780  if (pkt->stream_index != fc->stream_id)
781  flags |= FLAG_STREAM_ID;
782  if (pkt->size / fc->size_mul)
783  flags |= FLAG_SIZE_MSB;
784  if (pkt->pts - nus->last_pts != fc->pts_delta)
785  flags |= FLAG_CODED_PTS;
786  if (pkt->side_data_elems && nut->version > 3)
787  flags |= FLAG_SM_DATA;
788  if (pkt->size > 2 * nut->max_distance)
789  flags |= FLAG_CHECKSUM;
790  if (FFABS(pkt->pts - nus->last_pts) > nus->max_pts_distance)
791  flags |= FLAG_CHECKSUM;
792  if (pkt->size < nut->header_len[fc->header_idx] ||
793  (pkt->size > 4096 && fc->header_idx) ||
794  memcmp(pkt->data, nut->header[fc->header_idx],
795  nut->header_len[fc->header_idx]))
796  flags |= FLAG_HEADER_IDX;
797 
798  return flags | (fc->flags & FLAG_CODED);
799 }
800 
802 {
803  int i;
804  int best_i = 0;
805  int best_len = 0;
806 
807  if (pkt->size > 4096)
808  return 0;
809 
810  for (i = 1; i < nut->header_count; i++)
811  if (pkt->size >= nut->header_len[i]
812  && nut->header_len[i] > best_len
813  && !memcmp(pkt->data, nut->header[i], nut->header_len[i])) {
814  best_i = i;
815  best_len = nut->header_len[i];
816  }
817  return best_i;
818 }
819 
820 static int write_sm_data(AVFormatContext *s, AVIOContext *bc, AVPacket *pkt, int is_meta)
821 {
822  int ret, i, dyn_size;
823  unsigned flags;
824  AVIOContext *dyn_bc;
825  int sm_data_count = 0;
826  uint8_t tmp[256];
827  uint8_t *dyn_buf;
828 
829  ret = avio_open_dyn_buf(&dyn_bc);
830  if (ret < 0)
831  return ret;
832 
833  for (i = 0; i<pkt->side_data_elems; i++) {
834  const uint8_t *data = pkt->side_data[i].data;
835  int size = pkt->side_data[i].size;
836  const uint8_t *data_end = data + size;
837 
838  if (is_meta) {
841  if (!size || data[size-1]) {
842  ret = AVERROR(EINVAL);
843  goto fail;
844  }
845  while (data < data_end) {
846  const uint8_t *key = data;
847  const uint8_t *val = data + strlen(key) + 1;
848 
849  if(val >= data_end) {
850  ret = AVERROR(EINVAL);
851  goto fail;
852  }
853  put_str(dyn_bc, key);
854  put_s(dyn_bc, -1);
855  put_str(dyn_bc, val);
856  data = val + strlen(val) + 1;
857  sm_data_count++;
858  }
859  }
860  } else {
861  switch (pkt->side_data[i].type) {
862  case AV_PKT_DATA_PALETTE:
865  default:
866  if (pkt->side_data[i].type == AV_PKT_DATA_PALETTE) {
867  put_str(dyn_bc, "Palette");
868  } else if(pkt->side_data[i].type == AV_PKT_DATA_NEW_EXTRADATA) {
869  put_str(dyn_bc, "Extradata");
870  } else if(pkt->side_data[i].type == AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL) {
871  snprintf(tmp, sizeof(tmp), "CodecSpecificSide%"PRId64"", AV_RB64(data));
872  put_str(dyn_bc, tmp);
873  } else {
874  snprintf(tmp, sizeof(tmp), "UserData%s-SD-%d",
875  (s->flags & AVFMT_FLAG_BITEXACT) ? "Lavf" : LIBAVFORMAT_IDENT,
876  pkt->side_data[i].type);
877  put_str(dyn_bc, tmp);
878  }
879  put_s(dyn_bc, -2);
880  put_str(dyn_bc, "bin");
881  ff_put_v(dyn_bc, pkt->side_data[i].size);
882  avio_write(dyn_bc, data, pkt->side_data[i].size);
883  sm_data_count++;
884  break;
886  flags = bytestream_get_le32(&data);
888  put_str(dyn_bc, "Channels");
889  put_s(dyn_bc, bytestream_get_le32(&data));
890  sm_data_count++;
891  }
893  put_str(dyn_bc, "ChannelLayout");
894  put_s(dyn_bc, -2);
895  put_str(dyn_bc, "u64");
896  ff_put_v(bc, 8);
897  avio_write(dyn_bc, data, 8); data+=8;
898  sm_data_count++;
899  }
901  put_str(dyn_bc, "SampleRate");
902  put_s(dyn_bc, bytestream_get_le32(&data));
903  sm_data_count++;
904  }
906  put_str(dyn_bc, "Width");
907  put_s(dyn_bc, bytestream_get_le32(&data));
908  put_str(dyn_bc, "Height");
909  put_s(dyn_bc, bytestream_get_le32(&data));
910  sm_data_count+=2;
911  }
912  break;
914  if (AV_RL32(data)) {
915  put_str(dyn_bc, "SkipStart");
916  put_s(dyn_bc, (unsigned)AV_RL32(data));
917  sm_data_count++;
918  }
919  if (AV_RL32(data+4)) {
920  put_str(dyn_bc, "SkipEnd");
921  put_s(dyn_bc, (unsigned)AV_RL32(data+4));
922  sm_data_count++;
923  }
924  break;
928  // belongs into meta, not side data
929  break;
930  }
931  }
932  }
933 
934 fail:
935  ff_put_v(bc, sm_data_count);
936  dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf);
937  avio_write(bc, dyn_buf, dyn_size);
938  av_freep(&dyn_buf);
939 
940  return ret;
941 }
942 
944 {
945  NUTContext *nut = s->priv_data;
946  StreamContext *nus = &nut->stream[pkt->stream_index];
947  AVIOContext *bc = s->pb, *dyn_bc, *sm_bc = NULL;
948  FrameCode *fc;
949  int64_t coded_pts;
950  int best_length, frame_code, flags, needed_flags, i, header_idx;
951  int best_header_idx;
952  int key_frame = !!(pkt->flags & AV_PKT_FLAG_KEY);
953  int store_sp = 0;
954  int ret = 0;
955  int sm_size = 0;
956  int data_size = pkt->size;
957  uint8_t *sm_buf = NULL;
958 
959  if (pkt->pts < 0) {
960  av_log(s, AV_LOG_ERROR,
961  "Negative pts not supported stream %d, pts %"PRId64"\n",
962  pkt->stream_index, pkt->pts);
963  if (pkt->pts == AV_NOPTS_VALUE)
964  av_log(s, AV_LOG_ERROR, "Try to enable the genpts flag\n");
965  return AVERROR(EINVAL);
966  }
967 
968  if (pkt->side_data_elems && nut->version > 3) {
969  ret = avio_open_dyn_buf(&sm_bc);
970  if (ret < 0)
971  return ret;
972  ret = write_sm_data(s, sm_bc, pkt, 0);
973  if (ret >= 0)
974  ret = write_sm_data(s, sm_bc, pkt, 1);
975  sm_size = avio_close_dyn_buf(sm_bc, &sm_buf);
976  if (ret < 0)
977  goto fail;
978  data_size += sm_size;
979  }
980 
981  if (1LL << (20 + 3 * nut->header_count) <= avio_tell(bc))
982  write_headers(s, bc);
983 
984  if (key_frame && !(nus->last_flags & FLAG_KEY))
985  store_sp = 1;
986 
987  if (data_size + 30 /*FIXME check*/ + avio_tell(bc) >= nut->last_syncpoint_pos + nut->max_distance)
988  store_sp = 1;
989 
990 //FIXME: Ensure store_sp is 1 in the first place.
991 
992  if (store_sp &&
993  (!(nut->flags & NUT_PIPE) || nut->last_syncpoint_pos == INT_MIN)) {
994  int64_t sp_pos = INT64_MAX;
995 
996  ff_nut_reset_ts(nut, *nus->time_base, pkt->dts);
997  for (i = 0; i < s->nb_streams; i++) {
998  AVStream *st = s->streams[i];
999  int64_t dts_tb = av_rescale_rnd(pkt->dts,
1000  nus->time_base->num * (int64_t)nut->stream[i].time_base->den,
1001  nus->time_base->den * (int64_t)nut->stream[i].time_base->num,
1002  AV_ROUND_DOWN);
1003  int index = av_index_search_timestamp(st, dts_tb,
1005  if (index >= 0) {
1006  sp_pos = FFMIN(sp_pos, st->index_entries[index].pos);
1007  if (!nut->write_index && 2*index > st->nb_index_entries) {
1008  memmove(st->index_entries,
1009  st->index_entries + index,
1010  sizeof(*st->index_entries) * (st->nb_index_entries - index));
1011  st->nb_index_entries -= index;
1012  }
1013  }
1014  }
1015 
1016  nut->last_syncpoint_pos = avio_tell(bc);
1017  ret = avio_open_dyn_buf(&dyn_bc);
1018  if (ret < 0)
1019  goto fail;
1020  put_tt(nut, nus->time_base, dyn_bc, pkt->dts);
1021  ff_put_v(dyn_bc, sp_pos != INT64_MAX ? (nut->last_syncpoint_pos - sp_pos) >> 4 : 0);
1022 
1023  if (nut->flags & NUT_BROADCAST) {
1024  put_tt(nut, nus->time_base, dyn_bc,
1026  }
1027  put_packet(nut, bc, dyn_bc, 1, SYNCPOINT_STARTCODE);
1028 
1029  if (nut->write_index) {
1030  if ((ret = ff_nut_add_sp(nut, nut->last_syncpoint_pos, 0 /*unused*/, pkt->dts)) < 0)
1031  goto fail;
1032 
1033  if ((1ll<<60) % nut->sp_count == 0)
1034  for (i=0; i<s->nb_streams; i++) {
1035  int j;
1036  StreamContext *nus = &nut->stream[i];
1037  av_reallocp_array(&nus->keyframe_pts, 2*nut->sp_count, sizeof(*nus->keyframe_pts));
1038  if (!nus->keyframe_pts) {
1039  ret = AVERROR(ENOMEM);
1040  goto fail;
1041  }
1042  for (j=nut->sp_count == 1 ? 0 : nut->sp_count; j<2*nut->sp_count; j++)
1043  nus->keyframe_pts[j] = AV_NOPTS_VALUE;
1044  }
1045  }
1046  }
1048 
1049  coded_pts = pkt->pts & ((1 << nus->msb_pts_shift) - 1);
1050  if (ff_lsb2full(nus, coded_pts) != pkt->pts)
1051  coded_pts = pkt->pts + (1 << nus->msb_pts_shift);
1052 
1053  best_header_idx = find_best_header_idx(nut, pkt);
1054 
1055  best_length = INT_MAX;
1056  frame_code = -1;
1057  for (i = 0; i < 256; i++) {
1058  int length = 0;
1059  FrameCode *fc = &nut->frame_code[i];
1060  int flags = fc->flags;
1061 
1062  if (flags & FLAG_INVALID)
1063  continue;
1064  needed_flags = get_needed_flags(nut, nus, fc, pkt);
1065 
1066  if (flags & FLAG_CODED) {
1067  length++;
1068  flags = needed_flags;
1069  }
1070 
1071  if ((flags & needed_flags) != needed_flags)
1072  continue;
1073 
1074  if ((flags ^ needed_flags) & FLAG_KEY)
1075  continue;
1076 
1077  if (flags & FLAG_STREAM_ID)
1078  length += ff_get_v_length(pkt->stream_index);
1079 
1080  if (data_size % fc->size_mul != fc->size_lsb)
1081  continue;
1082  if (flags & FLAG_SIZE_MSB)
1083  length += ff_get_v_length(data_size / fc->size_mul);
1084 
1085  if (flags & FLAG_CHECKSUM)
1086  length += 4;
1087 
1088  if (flags & FLAG_CODED_PTS)
1089  length += ff_get_v_length(coded_pts);
1090 
1091  if ( (flags & FLAG_CODED)
1092  && nut->header_len[best_header_idx] > nut->header_len[fc->header_idx] + 1) {
1093  flags |= FLAG_HEADER_IDX;
1094  }
1095 
1096  if (flags & FLAG_HEADER_IDX) {
1097  length += 1 - nut->header_len[best_header_idx];
1098  } else {
1099  length -= nut->header_len[fc->header_idx];
1100  }
1101 
1102  length *= 4;
1103  length += !(flags & FLAG_CODED_PTS);
1104  length += !(flags & FLAG_CHECKSUM);
1105 
1106  if (length < best_length) {
1107  best_length = length;
1108  frame_code = i;
1109  }
1110  }
1111  av_assert0(frame_code != -1);
1112 
1113  fc = &nut->frame_code[frame_code];
1114  flags = fc->flags;
1115  needed_flags = get_needed_flags(nut, nus, fc, pkt);
1116  header_idx = fc->header_idx;
1117 
1119  avio_w8(bc, frame_code);
1120  if (flags & FLAG_CODED) {
1121  ff_put_v(bc, (flags ^ needed_flags) & ~(FLAG_CODED));
1122  flags = needed_flags;
1123  }
1124  if (flags & FLAG_STREAM_ID) ff_put_v(bc, pkt->stream_index);
1125  if (flags & FLAG_CODED_PTS) ff_put_v(bc, coded_pts);
1126  if (flags & FLAG_SIZE_MSB ) ff_put_v(bc, data_size / fc->size_mul);
1127  if (flags & FLAG_HEADER_IDX) ff_put_v(bc, header_idx = best_header_idx);
1128 
1129  if (flags & FLAG_CHECKSUM) avio_wl32(bc, ffio_get_checksum(bc));
1130  else ffio_get_checksum(bc);
1131 
1132  if (flags & FLAG_SM_DATA) {
1133  avio_write(bc, sm_buf, sm_size);
1134  }
1135  avio_write(bc, pkt->data + nut->header_len[header_idx], pkt->size - nut->header_len[header_idx]);
1136 
1137  nus->last_flags = flags;
1138  nus->last_pts = pkt->pts;
1139 
1140  //FIXME just store one per syncpoint
1141  if (flags & FLAG_KEY && !(nut->flags & NUT_PIPE)) {
1143  s->streams[pkt->stream_index],
1144  nut->last_syncpoint_pos,
1145  pkt->pts,
1146  0,
1147  0,
1149  if (nus->keyframe_pts && nus->keyframe_pts[nut->sp_count] == AV_NOPTS_VALUE)
1150  nus->keyframe_pts[nut->sp_count] = pkt->pts;
1151  }
1152 
1153  if (!nut->max_pts_tb || av_compare_ts(nut->max_pts, *nut->max_pts_tb, pkt->pts, *nus->time_base) < 0) {
1154  nut->max_pts = pkt->pts;
1155  nut->max_pts_tb = nus->time_base;
1156  }
1157 
1158 fail:
1159  av_freep(&sm_buf);
1160 
1161  return ret;
1162 }
1163 
1165 {
1166  NUTContext *nut = s->priv_data;
1167  AVIOContext *bc = s->pb, *dyn_bc;
1168  int ret;
1169 
1170  while (nut->header_count < 3)
1171  write_headers(s, bc);
1172 
1173  ret = avio_open_dyn_buf(&dyn_bc);
1174  if (ret >= 0 && nut->sp_count) {
1175  av_assert1(nut->write_index);
1176  write_index(nut, dyn_bc);
1177  put_packet(nut, bc, dyn_bc, 1, INDEX_STARTCODE);
1178  }
1179 
1180  return 0;
1181 }
1182 
1184 {
1185  NUTContext *nut = s->priv_data;
1186  int i;
1187 
1188  ff_nut_free_sp(nut);
1189  if (nut->stream)
1190  for (i=0; i<s->nb_streams; i++)
1191  av_freep(&nut->stream[i].keyframe_pts);
1192 
1193  av_freep(&nut->stream);
1194  av_freep(&nut->chapter);
1195  av_freep(&nut->time_base);
1196 }
1197 
1198 #define OFFSET(x) offsetof(NUTContext, x)
1199 #define E AV_OPT_FLAG_ENCODING_PARAM
1200 static const AVOption options[] = {
1201  { "syncpoints", "NUT syncpoint behaviour", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, E, "syncpoints" },
1202  { "default", "", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, INT_MIN, INT_MAX, E, "syncpoints" },
1203  { "none", "Disable syncpoints, low overhead and unseekable", 0, AV_OPT_TYPE_CONST, {.i64 = NUT_PIPE}, INT_MIN, INT_MAX, E, "syncpoints" },
1204  { "timestamped", "Extend syncpoints with a wallclock timestamp", 0, AV_OPT_TYPE_CONST, {.i64 = NUT_BROADCAST}, INT_MIN, INT_MAX, E, "syncpoints" },
1205  { "write_index", "Write index", OFFSET(write_index), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, E, },
1206  { NULL },
1207 };
1208 
1209 static const AVClass class = {
1210  .class_name = "nutenc",
1211  .item_name = av_default_item_name,
1212  .option = options,
1214 };
1215 
1217  .name = "nut",
1218  .long_name = NULL_IF_CONFIG_SMALL("NUT"),
1219  .mime_type = "video/x-nut",
1220  .extensions = "nut",
1221  .priv_data_size = sizeof(NUTContext),
1222  .audio_codec = CONFIG_LIBVORBIS ? AV_CODEC_ID_VORBIS :
1223  CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_MP2,
1224  .video_codec = AV_CODEC_ID_MPEG4,
1228  .deinit = nut_write_deinit,
1230  .codec_tag = ff_nut_codec_tags,
1231  .priv_class = &class,
1232 };
unsigned int nb_chapters
Number of chapters in AVChapter array.
Definition: avformat.h:1556
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:2967
#define NUT_STABLE_VERSION
Definition: nut.h:40
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:672
#define AVSEEK_FLAG_BACKWARD
Definition: avformat.h:2423
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:457
uint8_t header_len[128]
Definition: nut.h:97
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:771
const char * s
Definition: avisynth_c.h:768
Bytestream IO Context.
Definition: avio.h:155
#define MAIN_STARTCODE
Definition: nut.h:29
void ff_metadata_conv_ctx(AVFormatContext *ctx, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:59
AVRational av_div_q(AVRational b, AVRational c)
Divide one rational by another.
Definition: rational.c:88
A list of zero terminated key/value strings.
Definition: avcodec.h:1570
int64_t last_syncpoint_pos
Definition: nut.h:104
Definition: nut.h:65
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1324
AVOption.
Definition: opt.h:246
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
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:1979
static void nut_write_deinit(AVFormatContext *s)
Definition: nutenc.c:1183
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:86
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:4725
int64_t pos
Definition: avformat.h:820
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:4112
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:959
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1669
int flag
Definition: cpu.c:34
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
Definition: avformat.h:1092
Definition: nut.h:58
int av_log2(unsigned v)
Definition: intmath.c:26
void * av_tree_find(const AVTreeNode *t, void *key, int(*cmp)(const void *key, const void *b), void *next[2])
Definition: tree.c:39
static AVPacket pkt
int ff_nut_sp_pos_cmp(const void *a, const void *b)
Definition: nut.c:260
uint8_t stream_id
Definition: nut.h:67
AVDictionary * metadata
Definition: avformat.h:1310
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1295
mpeg audio layer common tables.
int strict_std_compliance
Allow non-standard and experimental extension.
Definition: avformat.h:1635
This struct describes the properties of an encoded stream.
Definition: avcodec.h:4104
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
Definition: mem.c:230
const uint8_t * header[128]
Definition: nut.h:98
Format I/O context.
Definition: avformat.h:1349
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
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
Public dictionary API.
int write_index
Definition: nut.h:110
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:363
uint8_t
AVRational * time_base
Definition: nut.h:107
int width
Video only.
Definition: avcodec.h:4178
uint16_t flags
Definition: nut.h:66
AVOptions.
A tree container.
#define ID_STRING
Definition: ffmeta.h:25
static void build_elision_headers(AVFormatContext *s)
Definition: nutenc.c:122
static void build_frame_code(AVFormatContext *s)
Definition: nutenc.c:144
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
static const AVOption options[]
Definition: nutenc.c:1200
const uint16_t avpriv_mpa_freq_tab[3]
Definition: mpegaudiodata.c:40
static int64_t last_pts
#define STREAM_STARTCODE
Definition: nut.h:30
static void put_tt(NUTContext *nut, AVRational *time_base, AVIOContext *bc, uint64_t val)
Definition: nutenc.c:280
#define NUT_PIPE
Definition: nut.h:114
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1417
const AVMetadataConv ff_nut_metadata_conv[]
Definition: nut.c:321
static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: nutenc.c:943
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
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1460
uint8_t * data
Definition: avcodec.h:1668
int last_flags
Definition: nut.h:76
static int flags
Definition: log.c:57
#define MAX_DISTANCE
Definition: nut.h:37
uint8_t * data
Definition: avcodec.h:1612
ptrdiff_t size
Definition: opengl_enc.c:101
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:527
static const uint8_t header[24]
Definition: sdr2.c:67
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:209
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1477
#define av_log(a,...)
AVFormatContext * avf
Definition: nut.h:93
int64_t last_pts
Definition: nut.h:78
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1700
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
AVOutputFormat ff_nut_muxer
Definition: nutenc.c:1216
#define AVINDEX_KEYFRAME
Definition: avformat.h:827
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1567
void ff_nut_free_sp(NUTContext *nut)
Definition: nut.c:303
An AV_PKT_DATA_PALETTE side data packet contains exactly AVPALETTE_SIZE bytes worth of palette...
Definition: avcodec.h:1407
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags)
Get the index for a specific timestamp.
Definition: utils.c:2088
void ff_parse_specific_params(AVStream *st, int *au_rate, int *au_ssize, int *au_scale)
Definition: riffenc.c:265
#define NUT_BROADCAST
Definition: nut.h:113
av_default_item_name
An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
Definition: avcodec.h:1433
#define AVERROR(e)
Definition: error.h:43
static int nut_write_header(AVFormatContext *s)
Definition: nutenc.c:681
uint64_t pos
Definition: nut.h:59
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
int video_delay
Video only.
Definition: avcodec.h:4207
#define OFFSET(x)
Definition: nutenc.c:1198
preferred ID for decoding MPEG audio layer 1, 2 or 3
Definition: avcodec.h:554
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:4108
AVChapter ** chapters
Definition: avformat.h:1557
static int write_chapter(NUTContext *nut, AVIOContext *bc, int id)
Definition: nutenc.c:541
simple assert() macros that are a bit more flexible than ISO C assert().
enum AVPacketSideDataType type
Definition: avcodec.h:1614
GLsizei GLsizei * length
Definition: opengl_enc.c:115
int sp_count
Definition: nut.h:109
int header_count
Definition: nut.h:106
int side_data_elems
Definition: avcodec.h:1680
int ff_standardize_creation_time(AVFormatContext *s)
Standardize creation_time metadata in AVFormatContext to an ISO-8601 timestamp string.
Definition: utils.c:5461
GLsizei count
Definition: opengl_enc.c:109
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:970
#define FFMAX(a, b)
Definition: common.h:94
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:1876
#define fail()
Definition: checkasm.h:90
Definition: nut.h:44
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1674
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
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:4130
int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:191
static void write_mainheader(NUTContext *nut, AVIOContext *bc)
Definition: nutenc.c:326
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1405
#define LIBAVFORMAT_IDENT
Definition: version.h:46
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:600
static const uint16_t fc[]
Definition: dcaenc.h:43
int void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:229
AVRational * max_pts_tb
Definition: nut.h:112
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val)
Definition: nut.c:242
int flags
Definition: nut.h:115
#define FFMIN(a, b)
Definition: common.h:96
#define E
Definition: nutenc.c:1199
uint8_t header_idx
Definition: nut.h:72
AVRational time_base
Definition: signature.h:103
This side data contains quality related information from the encoder.
Definition: avcodec.h:1493
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
uint16_t size_lsb
Definition: nut.h:69
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:94
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:485
unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf, unsigned int len)
Definition: aviobuf.c:574
int16_t pts_delta
Definition: nut.h:70
int64_t * keyframe_pts
Definition: nut.h:84
int64_t ff_lsb2full(StreamContext *stream, int64_t lsb)
Definition: nut.c:253
const char * name
Definition: avformat.h:524
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
#define AV_WB24(p, d)
Definition: intreadwrite.h:455
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
struct AVTreeNode * syncpoints
Definition: nut.h:108
int avoid_negative_ts
Avoid negative timestamps during muxing.
Definition: avformat.h:1658
ChapterContext * chapter
Definition: nut.h:101
int n
Definition: avisynth_c.h:684
AVDictionary * metadata
Definition: avformat.h:961
int dummy
Definition: motion.c:64
#define INDEX_STARTCODE
Definition: nut.h:32
uint16_t size_mul
Definition: nut.h:68
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
preferred ID for MPEG-1/2 video decoding
Definition: avcodec.h:219
static int write_globalinfo(NUTContext *nut, AVIOContext *bc)
Definition: nutenc.c:471
#define AVERROR_EXPERIMENTAL
Requested feature is flagged experimental. Set strict_std_compliance if you really want to use it...
Definition: error.h:72
void ffio_free_dyn_buf(AVIOContext **s)
Free a dynamic buffer.
Definition: aviobuf.c:1352
static const float pred[4]
Definition: siprdata.h:259
int64_t av_gettime(void)
Get the current time in microseconds.
Definition: time.c:39
Stream structure.
Definition: avformat.h:889
int msb_pts_shift
Definition: nut.h:81
int64_t end
chapter start/end time in time_base units
Definition: avformat.h:1309
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
Definition: avcodec.h:1416
sample_rate
int frame_size
Definition: mxfenc.c:1820
A list of zero terminated key/value strings.
Definition: avcodec.h:1533
static int intra_only
Definition: ffmpeg_opt.c:127
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
AVIOContext * pb
I/O context.
Definition: avformat.h:1391
int max_pts_distance
Definition: nut.h:82
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:187
static int write_streaminfo(NUTContext *nut, AVIOContext *bc, int stream_id)
Definition: nutenc.c:499
static int write_index(NUTContext *nut, AVIOContext *bc)
Definition: nutenc.c:569
static int find_expected_header(AVCodecParameters *p, int size, int key_frame, uint8_t out[64])
Definition: nutenc.c:38
Definition: nut.h:54
void * buf
Definition: avisynth_c.h:690
Data found in BlockAdditional element of matroska container.
Definition: avcodec.h:1552
GLint GLenum type
Definition: opengl_enc.c:105
AVRational ff_choose_timebase(AVFormatContext *s, AVStream *st, int min_precision)
Chooses a timebase for muxing the specified stream.
Definition: mux.c:102
int nb_index_entries
Definition: avformat.h:1094
static int write_sm_data(AVFormatContext *s, AVIOContext *bc, AVPacket *pkt, int is_meta)
Definition: nutenc.c:820
Describe the class of an AVClass context structure.
Definition: log.h:67
#define AV_WB32(p, v)
Definition: intreadwrite.h:424
int index
Definition: gxfenc.c:89
Rational number (pair of numerator and denominator).
Definition: rational.h:58
static int nut_write_trailer(AVFormatContext *s)
Definition: nutenc.c:1164
Recommmends skipping the specified number of samples.
Definition: avcodec.h:1517
AVRational * time_base
Definition: nut.h:88
unsigned long ffio_get_checksum(AVIOContext *s)
Definition: aviobuf.c:592
StreamContext * stream
Definition: nut.h:100
#define snprintf
Definition: snprintf.h:34
static void put_s(AVIOContext *bc, int64_t val)
Definition: nutenc.c:297
static int write_streamheader(AVFormatContext *avctx, AVIOContext *bc, AVStream *st, int i)
Definition: nutenc.c:406
Round toward -infinity.
Definition: mathematics.h:82
#define INFO_STARTCODE
Definition: nut.h:33
static int64_t pts
Global timestamp for the audio frames.
int ff_get_v_length(uint64_t val)
Get the length in bytes which is needed to store val as v.
Definition: aviobuf.c:431
int version
Definition: nut.h:116
static int write_headers(AVFormatContext *avctx, AVIOContext *bc)
Definition: nutenc.c:621
int64_t start
Definition: avformat.h:1309
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
int sample_rate
Audio only.
Definition: avcodec.h:4222
const Dispositions ff_nut_dispositions[]
Definition: nut.c:311
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_RB64
Definition: bytestream.h:87
int64_t max_pts
Definition: nut.h:111
AVPacketSideData * side_data
Additional packet data that can be provided by the container.
Definition: avcodec.h:1679
static int find_best_header_idx(NUTContext *nut, AVPacket *pkt)
Definition: nutenc.c:801
if(ret< 0)
Definition: vf_mcdeint.c:282
FrameCode frame_code[256]
Definition: nut.h:96
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:950
int ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts)
Definition: nut.c:272
AVRational time_base
time base in which the start/end timestamps are specified
Definition: avformat.h:1308
char * key
Definition: dict.h:86
int den
Denominator.
Definition: rational.h:60
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(constuint8_t *) pi-0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(constint16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(constint32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(constint64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(constfloat *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(constdouble *) pi *(INT64_C(1)<< 63)))#defineFMT_PAIR_FUNC(out, in) staticconv_func_type *constfmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64),};staticvoidcpy1(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, len);}staticvoidcpy2(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 2 *len);}staticvoidcpy4(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 4 *len);}staticvoidcpy8(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 8 *len);}AudioConvert *swri_audio_convert_alloc(enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, constint *ch_map, intflags){AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) returnNULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) returnNULL;if(channels==1){in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);}ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map){switch(av_get_bytes_per_sample(in_fmt)){case1:ctx->simd_f=cpy1;break;case2:ctx->simd_f=cpy2;break;case4:ctx->simd_f=cpy4;break;case8:ctx->simd_f=cpy8;break;}}if(HAVE_YASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);returnctx;}voidswri_audio_convert_free(AudioConvert **ctx){av_freep(ctx);}intswri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, intlen){intch;intoff=0;constintos=(out->planar?1:out->ch_count)*out->bps;unsignedmisaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){intplanes=in->planar?in->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;}if(ctx->out_simd_align_mask){intplanes=out->planar?out->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;}if(ctx->simd_f &&!ctx->ch_map &&!misaligned){off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){if(out->planar==in->planar){intplanes=out->planar?out->ch_count:1;for(ch=0;ch< planes;ch++){ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
#define SYNCPOINT_STARTCODE
Definition: nut.h:31
int flag
Definition: nut.h:130
static void put_str(AVIOContext *bc, const char *string)
Store a string as vb.
Definition: nutenc.c:289
#define AVFMT_VARIABLE_FPS
Format allows variable fps.
Definition: avformat.h:489
#define av_free(p)
char * value
Definition: dict.h:87
static void put_packet(NUTContext *nut, AVIOContext *bc, AVIOContext *dyn_bc, int calculate_checksum, uint64_t startcode)
Definition: nutenc.c:303
void ff_put_v(AVIOContext *bc, uint64_t val)
Put val using a variable number of bytes.
Definition: aviobuf.c:441
int len
void * priv_data
Format private data.
Definition: avformat.h:1377
static int get_needed_flags(NUTContext *nut, StreamContext *nus, FrameCode *fc, AVPacket *pkt)
Definition: nutenc.c:773
static int find_header_idx(AVFormatContext *s, AVCodecParameters *p, int size, int frame_type)
Definition: nutenc.c:105
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:337
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:4126
int channels
Audio only.
Definition: avcodec.h:4218
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1667
FILE * out
Definition: movenc.c:54
#define av_freep(p)
void INT64 start
Definition: avisynth_c.h:690
static int add_info(AVIOContext *bc, const char *type, const char *value)
Definition: nutenc.c:463
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
Definition: dict.h:70
AVCodecParameters * codecpar
Definition: avformat.h:1252
const uint16_t avpriv_mpa_bitrate_tab[2][3][15]
Definition: mpegaudiodata.c:30
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:4116
int stream_index
Definition: avcodec.h:1670
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:1108
const AVCodecTag *const ff_nut_codec_tags[]
Definition: nut.c:237
enum AVCodecID id
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
This structure stores compressed data.
Definition: avcodec.h:1645
unsigned int time_base_count
Definition: nut.h:103
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1661
int minor_version
Definition: nut.h:117
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
unsigned int max_distance
Definition: nut.h:102
static uint8_t tmp[11]
Definition: aes_ctr.c:26