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ismindex.c
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1 /*
2  * Copyright (c) 2012 Martin Storsjo
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /*
22  * To create a simple file for smooth streaming:
23  * ffmpeg <normal input/transcoding options> -movflags frag_keyframe foo.ismv
24  * ismindex -n foo foo.ismv
25  * This step creates foo.ism and foo.ismc that is required by IIS for
26  * serving it.
27  *
28  * With -ismf, it also creates foo.ismf, which maps fragment names to
29  * start-end offsets in the ismv, for use in your own streaming server.
30  *
31  * By adding -path-prefix path/, the produced foo.ism will refer to the
32  * files foo.ismv as "path/foo.ismv" - the prefix for the generated ismc
33  * file can be set with the -ismc-prefix option similarly.
34  *
35  * To pre-split files for serving as static files by a web server without
36  * any extra server support, create the ismv file as above, and split it:
37  * ismindex -split foo.ismv
38  * This step creates a file Manifest and directories QualityLevel(...),
39  * that can be read directly by a smooth streaming player.
40  *
41  * The -output dir option can be used to request that output files
42  * (both .ism/.ismc, or Manifest/QualityLevels* when splitting)
43  * should be written to this directory instead of in the current directory.
44  * (The directory itself isn't created if it doesn't already exist.)
45  */
46 
47 #include <stdio.h>
48 #include <string.h>
49 
50 #include "cmdutils.h"
51 
52 #include "libavformat/avformat.h"
53 #include "libavformat/isom.h"
54 #include "libavformat/os_support.h"
55 #include "libavutil/intreadwrite.h"
56 #include "libavutil/mathematics.h"
57 
58 static int usage(const char *argv0, int ret)
59 {
60  fprintf(stderr, "%s [-split] [-ismf] [-n basename] [-path-prefix prefix] "
61  "[-ismc-prefix prefix] [-output dir] file1 [file2] ...\n", argv0);
62  return ret;
63 }
64 
65 struct MoofOffset {
66  int64_t time;
67  int64_t offset;
68  int64_t duration;
69 };
70 
71 struct Track {
72  const char *name;
73  int64_t duration;
74  int bitrate;
75  int track_id;
77  int width, height;
78  int chunks;
83  int timescale;
84  const char *fourcc;
85  int blocksize;
86  int tag;
87 };
88 
89 struct Tracks {
90  int nb_tracks;
91  int64_t duration;
92  struct Track **tracks;
95 };
96 
97 static int expect_tag(int32_t got_tag, int32_t expected_tag) {
98  if (got_tag != expected_tag) {
99  char got_tag_str[4], expected_tag_str[4];
100  AV_WB32(got_tag_str, got_tag);
101  AV_WB32(expected_tag_str, expected_tag);
102  fprintf(stderr, "wanted tag %.4s, got %.4s\n", expected_tag_str,
103  got_tag_str);
104  return -1;
105  }
106  return 0;
107 }
108 
109 static int copy_tag(AVIOContext *in, AVIOContext *out, int32_t tag_name)
110 {
111  int32_t size, tag;
112 
113  size = avio_rb32(in);
114  tag = avio_rb32(in);
115  avio_wb32(out, size);
116  avio_wb32(out, tag);
117  if (expect_tag(tag, tag_name) != 0)
118  return -1;
119  size -= 8;
120  while (size > 0) {
121  char buf[1024];
122  int len = FFMIN(sizeof(buf), size);
123  int got;
124  if ((got = avio_read(in, buf, len)) != len) {
125  fprintf(stderr, "short read, wanted %d, got %d\n", len, got);
126  break;
127  }
128  avio_write(out, buf, len);
129  size -= len;
130  }
131  return 0;
132 }
133 
134 static int skip_tag(AVIOContext *in, int32_t tag_name)
135 {
136  int64_t pos = avio_tell(in);
137  int32_t size, tag;
138 
139  size = avio_rb32(in);
140  tag = avio_rb32(in);
141  if (expect_tag(tag, tag_name) != 0)
142  return -1;
143  avio_seek(in, pos + size, SEEK_SET);
144  return 0;
145 }
146 
147 static int write_fragment(const char *filename, AVIOContext *in)
148 {
149  AVIOContext *out = NULL;
150  int ret;
151 
152  if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, NULL, NULL)) < 0) {
153  char errbuf[100];
154  av_strerror(ret, errbuf, sizeof(errbuf));
155  fprintf(stderr, "Unable to open %s: %s\n", filename, errbuf);
156  return ret;
157  }
158  ret = copy_tag(in, out, MKBETAG('m', 'o', 'o', 'f'));
159  if (!ret)
160  ret = copy_tag(in, out, MKBETAG('m', 'd', 'a', 't'));
161 
162  avio_flush(out);
163  avio_close(out);
164 
165  return ret;
166 }
167 
169 {
170  int ret;
171  ret = skip_tag(in, MKBETAG('m', 'o', 'o', 'f'));
172  if (!ret)
173  ret = skip_tag(in, MKBETAG('m', 'd', 'a', 't'));
174  return ret;
175 }
176 
177 static int write_fragments(struct Tracks *tracks, int start_index,
178  AVIOContext *in, const char *basename,
179  int split, int ismf, const char* output_prefix)
180 {
181  char dirname[2048], filename[2048], idxname[2048];
182  int i, j, ret = 0, fragment_ret;
183  FILE* out = NULL;
184 
185  if (ismf) {
186  snprintf(idxname, sizeof(idxname), "%s%s.ismf", output_prefix, basename);
187  out = fopen(idxname, "w");
188  if (!out) {
189  ret = AVERROR(errno);
190  perror(idxname);
191  goto fail;
192  }
193  }
194  for (i = start_index; i < tracks->nb_tracks; i++) {
195  struct Track *track = tracks->tracks[i];
196  const char *type = track->is_video ? "video" : "audio";
197  snprintf(dirname, sizeof(dirname), "%sQualityLevels(%d)", output_prefix, track->bitrate);
198  if (split) {
199  if (mkdir(dirname, 0777) == -1 && errno != EEXIST) {
200  ret = AVERROR(errno);
201  perror(dirname);
202  goto fail;
203  }
204  }
205  for (j = 0; j < track->chunks; j++) {
206  snprintf(filename, sizeof(filename), "%s/Fragments(%s=%"PRId64")",
207  dirname, type, track->offsets[j].time);
208  avio_seek(in, track->offsets[j].offset, SEEK_SET);
209  if (ismf)
210  fprintf(out, "%s %"PRId64, filename, avio_tell(in));
211  if (split)
212  fragment_ret = write_fragment(filename, in);
213  else
214  fragment_ret = skip_fragment(in);
215  if (ismf)
216  fprintf(out, " %"PRId64"\n", avio_tell(in));
217  if (fragment_ret != 0) {
218  fprintf(stderr, "failed fragment %d in track %d (%s)\n", j,
219  track->track_id, track->name);
220  ret = fragment_ret;
221  }
222  }
223  }
224 fail:
225  if (out)
226  fclose(out);
227  return ret;
228 }
229 
230 static int64_t read_trun_duration(AVIOContext *in, int default_duration,
231  int64_t end)
232 {
233  int64_t ret = 0;
234  int64_t pos;
235  int flags, i;
236  int entries;
237  avio_r8(in); /* version */
238  flags = avio_rb24(in);
239  if (default_duration <= 0 && !(flags & MOV_TRUN_SAMPLE_DURATION)) {
240  fprintf(stderr, "No sample duration in trun flags\n");
241  return -1;
242  }
243  entries = avio_rb32(in);
244 
245  if (flags & MOV_TRUN_DATA_OFFSET) avio_rb32(in);
246  if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) avio_rb32(in);
247 
248  pos = avio_tell(in);
249  for (i = 0; i < entries && pos < end; i++) {
250  int sample_duration = default_duration;
251  if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(in);
252  if (flags & MOV_TRUN_SAMPLE_SIZE) avio_rb32(in);
253  if (flags & MOV_TRUN_SAMPLE_FLAGS) avio_rb32(in);
254  if (flags & MOV_TRUN_SAMPLE_CTS) avio_rb32(in);
255  if (sample_duration < 0) {
256  fprintf(stderr, "Negative sample duration %d\n", sample_duration);
257  return -1;
258  }
259  ret += sample_duration;
260  pos = avio_tell(in);
261  }
262 
263  return ret;
264 }
265 
266 static int64_t read_moof_duration(AVIOContext *in, int64_t offset)
267 {
268  int64_t ret = -1;
269  int32_t moof_size, size, tag;
270  int64_t pos = 0;
271  int default_duration = 0;
272 
273  avio_seek(in, offset, SEEK_SET);
274  moof_size = avio_rb32(in);
275  tag = avio_rb32(in);
276  if (expect_tag(tag, MKBETAG('m', 'o', 'o', 'f')) != 0)
277  goto fail;
278  while (pos < offset + moof_size) {
279  pos = avio_tell(in);
280  size = avio_rb32(in);
281  tag = avio_rb32(in);
282  if (tag == MKBETAG('t', 'r', 'a', 'f')) {
283  int64_t traf_pos = pos;
284  int64_t traf_size = size;
285  while (pos < traf_pos + traf_size) {
286  pos = avio_tell(in);
287  size = avio_rb32(in);
288  tag = avio_rb32(in);
289  if (tag == MKBETAG('t', 'f', 'h', 'd')) {
290  int flags = 0;
291  avio_r8(in); /* version */
292  flags = avio_rb24(in);
293  avio_rb32(in); /* track_id */
294  if (flags & MOV_TFHD_BASE_DATA_OFFSET)
295  avio_rb64(in);
296  if (flags & MOV_TFHD_STSD_ID)
297  avio_rb32(in);
298  if (flags & MOV_TFHD_DEFAULT_DURATION)
299  default_duration = avio_rb32(in);
300  }
301  if (tag == MKBETAG('t', 'r', 'u', 'n')) {
302  return read_trun_duration(in, default_duration,
303  pos + size);
304  }
305  avio_seek(in, pos + size, SEEK_SET);
306  }
307  fprintf(stderr, "Couldn't find trun\n");
308  goto fail;
309  }
310  avio_seek(in, pos + size, SEEK_SET);
311  }
312  fprintf(stderr, "Couldn't find traf\n");
313 
314 fail:
315  return ret;
316 }
317 
318 static int read_tfra(struct Tracks *tracks, int start_index, AVIOContext *f)
319 {
320  int ret = AVERROR_EOF, track_id;
321  int version, fieldlength, i, j;
322  int64_t pos = avio_tell(f);
323  uint32_t size = avio_rb32(f);
324  struct Track *track = NULL;
325 
326  if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a'))
327  goto fail;
328  version = avio_r8(f);
329  avio_rb24(f);
330  track_id = avio_rb32(f); /* track id */
331  for (i = start_index; i < tracks->nb_tracks && !track; i++)
332  if (tracks->tracks[i]->track_id == track_id)
333  track = tracks->tracks[i];
334  if (!track) {
335  /* Ok, continue parsing the next atom */
336  ret = 0;
337  goto fail;
338  }
339  fieldlength = avio_rb32(f);
340  track->chunks = avio_rb32(f);
341  track->offsets = av_mallocz_array(track->chunks, sizeof(*track->offsets));
342  if (!track->offsets) {
343  track->chunks = 0;
344  ret = AVERROR(ENOMEM);
345  goto fail;
346  }
347  // The duration here is always the difference between consecutive
348  // start times.
349  for (i = 0; i < track->chunks; i++) {
350  if (version == 1) {
351  track->offsets[i].time = avio_rb64(f);
352  track->offsets[i].offset = avio_rb64(f);
353  } else {
354  track->offsets[i].time = avio_rb32(f);
355  track->offsets[i].offset = avio_rb32(f);
356  }
357  for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
358  avio_r8(f);
359  for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
360  avio_r8(f);
361  for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
362  avio_r8(f);
363  if (i > 0)
364  track->offsets[i - 1].duration = track->offsets[i].time -
365  track->offsets[i - 1].time;
366  }
367  if (track->chunks > 0) {
368  track->offsets[track->chunks - 1].duration = track->offsets[0].time +
369  track->duration -
370  track->offsets[track->chunks - 1].time;
371  }
372  // Now try and read the actual durations from the trun sample data.
373  for (i = 0; i < track->chunks; i++) {
374  int64_t duration = read_moof_duration(f, track->offsets[i].offset);
375  if (duration > 0 && abs(duration - track->offsets[i].duration) > 3) {
376  // 3 allows for integer duration to drift a few units,
377  // e.g., for 1/3 durations
378  track->offsets[i].duration = duration;
379  }
380  }
381  if (track->chunks > 0) {
382  if (track->offsets[track->chunks - 1].duration <= 0) {
383  fprintf(stderr, "Calculated last chunk duration for track %d "
384  "was non-positive (%"PRId64"), probably due to missing "
385  "fragments ", track->track_id,
386  track->offsets[track->chunks - 1].duration);
387  if (track->chunks > 1) {
388  track->offsets[track->chunks - 1].duration =
389  track->offsets[track->chunks - 2].duration;
390  } else {
391  track->offsets[track->chunks - 1].duration = 1;
392  }
393  fprintf(stderr, "corrected to %"PRId64"\n",
394  track->offsets[track->chunks - 1].duration);
395  track->duration = track->offsets[track->chunks - 1].time +
396  track->offsets[track->chunks - 1].duration -
397  track->offsets[0].time;
398  fprintf(stderr, "Track duration corrected to %"PRId64"\n",
399  track->duration);
400  }
401  }
402  ret = 0;
403 
404 fail:
405  avio_seek(f, pos + size, SEEK_SET);
406  return ret;
407 }
408 
409 static int read_mfra(struct Tracks *tracks, int start_index,
410  const char *file, int split, int ismf,
411  const char *basename, const char* output_prefix)
412 {
413  int err = 0;
414  const char* err_str = "";
415  AVIOContext *f = NULL;
416  int32_t mfra_size;
417 
418  if ((err = avio_open2(&f, file, AVIO_FLAG_READ, NULL, NULL)) < 0)
419  goto fail;
420  avio_seek(f, avio_size(f) - 4, SEEK_SET);
421  mfra_size = avio_rb32(f);
422  avio_seek(f, -mfra_size, SEEK_CUR);
423  if (avio_rb32(f) != mfra_size) {
424  err = AVERROR_INVALIDDATA;
425  err_str = "mfra size mismatch";
426  goto fail;
427  }
428  if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
429  err = AVERROR_INVALIDDATA;
430  err_str = "mfra tag mismatch";
431  goto fail;
432  }
433  while (!read_tfra(tracks, start_index, f)) {
434  /* Empty */
435  }
436 
437  if (split || ismf)
438  err = write_fragments(tracks, start_index, f, basename, split, ismf,
439  output_prefix);
440  err_str = "error in write_fragments";
441 
442 fail:
443  if (f)
444  avio_close(f);
445  if (err)
446  fprintf(stderr, "Unable to read the MFRA atom in %s (%s)\n", file, err_str);
447  return err;
448 }
449 
450 static int get_private_data(struct Track *track, AVCodecContext *codec)
451 {
452  track->codec_private_size = 0;
453  track->codec_private = av_mallocz(codec->extradata_size);
454  if (!track->codec_private)
455  return AVERROR(ENOMEM);
456  track->codec_private_size = codec->extradata_size;
457  memcpy(track->codec_private, codec->extradata, codec->extradata_size);
458  return 0;
459 }
460 
461 static int get_video_private_data(struct Track *track, AVCodecContext *codec)
462 {
463  AVIOContext *io = NULL;
464  uint16_t sps_size, pps_size;
465  int err;
466 
467  if (codec->codec_id == AV_CODEC_ID_VC1)
468  return get_private_data(track, codec);
469 
470  if ((err = avio_open_dyn_buf(&io)) < 0)
471  goto fail;
472  err = AVERROR(EINVAL);
473  if (codec->extradata_size < 11 || codec->extradata[0] != 1)
474  goto fail;
475  sps_size = AV_RB16(&codec->extradata[6]);
476  if (11 + sps_size > codec->extradata_size)
477  goto fail;
478  avio_wb32(io, 0x00000001);
479  avio_write(io, &codec->extradata[8], sps_size);
480  pps_size = AV_RB16(&codec->extradata[9 + sps_size]);
481  if (11 + sps_size + pps_size > codec->extradata_size)
482  goto fail;
483  avio_wb32(io, 0x00000001);
484  avio_write(io, &codec->extradata[11 + sps_size], pps_size);
485  err = 0;
486 
487 fail:
489  return err;
490 }
491 
492 static int handle_file(struct Tracks *tracks, const char *file, int split,
493  int ismf, const char *basename,
494  const char* output_prefix)
495 {
496  AVFormatContext *ctx = NULL;
497  int err = 0, i, orig_tracks = tracks->nb_tracks;
498  char errbuf[50], *ptr;
499  struct Track *track;
500 
501  err = avformat_open_input(&ctx, file, NULL, NULL);
502  if (err < 0) {
503  av_strerror(err, errbuf, sizeof(errbuf));
504  fprintf(stderr, "Unable to open %s: %s\n", file, errbuf);
505  return 1;
506  }
507 
508  err = avformat_find_stream_info(ctx, NULL);
509  if (err < 0) {
510  av_strerror(err, errbuf, sizeof(errbuf));
511  fprintf(stderr, "Unable to identify %s: %s\n", file, errbuf);
512  goto fail;
513  }
514 
515  if (ctx->nb_streams < 1) {
516  fprintf(stderr, "No streams found in %s\n", file);
517  goto fail;
518  }
519 
520  for (i = 0; i < ctx->nb_streams; i++) {
521  struct Track **temp;
522  AVStream *st = ctx->streams[i];
523 
524  if (st->codec->bit_rate == 0) {
525  fprintf(stderr, "Skipping track %d in %s as it has zero bitrate\n",
526  st->id, file);
527  continue;
528  }
529 
530  track = av_mallocz(sizeof(*track));
531  if (!track) {
532  err = AVERROR(ENOMEM);
533  goto fail;
534  }
535  temp = av_realloc_array(tracks->tracks,
536  tracks->nb_tracks + 1,
537  sizeof(*tracks->tracks));
538  if (!temp) {
539  av_free(track);
540  err = AVERROR(ENOMEM);
541  goto fail;
542  }
543  tracks->tracks = temp;
544  tracks->tracks[tracks->nb_tracks] = track;
545 
546  track->name = file;
547  if ((ptr = strrchr(file, '/')))
548  track->name = ptr + 1;
549 
550  track->bitrate = st->codec->bit_rate;
551  track->track_id = st->id;
552  track->timescale = st->time_base.den;
553  track->duration = st->duration;
554  track->is_audio = st->codec->codec_type == AVMEDIA_TYPE_AUDIO;
555  track->is_video = st->codec->codec_type == AVMEDIA_TYPE_VIDEO;
556 
557  if (!track->is_audio && !track->is_video) {
558  fprintf(stderr,
559  "Track %d in %s is neither video nor audio, skipping\n",
560  track->track_id, file);
561  av_freep(&tracks->tracks[tracks->nb_tracks]);
562  continue;
563  }
564 
565  tracks->duration = FFMAX(tracks->duration,
567  track->timescale, AV_ROUND_UP));
568 
569  if (track->is_audio) {
570  if (tracks->audio_track < 0)
571  tracks->audio_track = tracks->nb_tracks;
572  tracks->nb_audio_tracks++;
573  track->channels = st->codec->channels;
574  track->sample_rate = st->codec->sample_rate;
575  if (st->codec->codec_id == AV_CODEC_ID_AAC) {
576  track->fourcc = "AACL";
577  track->tag = 255;
578  track->blocksize = 4;
579  } else if (st->codec->codec_id == AV_CODEC_ID_WMAPRO) {
580  track->fourcc = "WMAP";
581  track->tag = st->codec->codec_tag;
582  track->blocksize = st->codec->block_align;
583  }
584  get_private_data(track, st->codec);
585  }
586  if (track->is_video) {
587  if (tracks->video_track < 0)
588  tracks->video_track = tracks->nb_tracks;
589  tracks->nb_video_tracks++;
590  track->width = st->codec->width;
591  track->height = st->codec->height;
592  if (st->codec->codec_id == AV_CODEC_ID_H264)
593  track->fourcc = "H264";
594  else if (st->codec->codec_id == AV_CODEC_ID_VC1)
595  track->fourcc = "WVC1";
596  get_video_private_data(track, st->codec);
597  }
598 
599  tracks->nb_tracks++;
600  }
601 
602  avformat_close_input(&ctx);
603 
604  err = read_mfra(tracks, orig_tracks, file, split, ismf, basename,
605  output_prefix);
606 
607 fail:
608  if (ctx)
609  avformat_close_input(&ctx);
610  return err;
611 }
612 
613 static void output_server_manifest(struct Tracks *tracks, const char *basename,
614  const char *output_prefix,
615  const char *path_prefix,
616  const char *ismc_prefix)
617 {
618  char filename[1000];
619  FILE *out;
620  int i;
621 
622  snprintf(filename, sizeof(filename), "%s%s.ism", output_prefix, basename);
623  out = fopen(filename, "w");
624  if (!out) {
625  perror(filename);
626  return;
627  }
628  fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
629  fprintf(out, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
630  fprintf(out, "\t<head>\n");
631  fprintf(out, "\t\t<meta name=\"clientManifestRelativePath\" "
632  "content=\"%s%s.ismc\" />\n", ismc_prefix, basename);
633  fprintf(out, "\t</head>\n");
634  fprintf(out, "\t<body>\n");
635  fprintf(out, "\t\t<switch>\n");
636  for (i = 0; i < tracks->nb_tracks; i++) {
637  struct Track *track = tracks->tracks[i];
638  const char *type = track->is_video ? "video" : "audio";
639  fprintf(out, "\t\t\t<%s src=\"%s%s\" systemBitrate=\"%d\">\n",
640  type, path_prefix, track->name, track->bitrate);
641  fprintf(out, "\t\t\t\t<param name=\"trackID\" value=\"%d\" "
642  "valueType=\"data\" />\n", track->track_id);
643  fprintf(out, "\t\t\t</%s>\n", type);
644  }
645  fprintf(out, "\t\t</switch>\n");
646  fprintf(out, "\t</body>\n");
647  fprintf(out, "</smil>\n");
648  fclose(out);
649 }
650 
651 static void print_track_chunks(FILE *out, struct Tracks *tracks, int main,
652  const char *type)
653 {
654  int i, j;
655  int64_t pos = 0;
656  struct Track *track = tracks->tracks[main];
657  int should_print_time_mismatch = 1;
658 
659  for (i = 0; i < track->chunks; i++) {
660  for (j = main + 1; j < tracks->nb_tracks; j++) {
661  if (tracks->tracks[j]->is_audio == track->is_audio) {
662  if (track->offsets[i].duration != tracks->tracks[j]->offsets[i].duration) {
663  fprintf(stderr, "Mismatched duration of %s chunk %d in %s (%d) and %s (%d)\n",
664  type, i, track->name, main, tracks->tracks[j]->name, j);
665  should_print_time_mismatch = 1;
666  }
667  if (track->offsets[i].time != tracks->tracks[j]->offsets[i].time) {
668  if (should_print_time_mismatch)
669  fprintf(stderr, "Mismatched (start) time of %s chunk %d in %s (%d) and %s (%d)\n",
670  type, i, track->name, main, tracks->tracks[j]->name, j);
671  should_print_time_mismatch = 0;
672  }
673  }
674  }
675  fprintf(out, "\t\t<c n=\"%d\" d=\"%"PRId64"\" ",
676  i, track->offsets[i].duration);
677  if (pos != track->offsets[i].time) {
678  fprintf(out, "t=\"%"PRId64"\" ", track->offsets[i].time);
679  pos = track->offsets[i].time;
680  }
681  pos += track->offsets[i].duration;
682  fprintf(out, "/>\n");
683  }
684 }
685 
686 static void output_client_manifest(struct Tracks *tracks, const char *basename,
687  const char *output_prefix, int split)
688 {
689  char filename[1000];
690  FILE *out;
691  int i, j;
692 
693  if (split)
694  snprintf(filename, sizeof(filename), "%sManifest", output_prefix);
695  else
696  snprintf(filename, sizeof(filename), "%s%s.ismc", output_prefix, basename);
697  out = fopen(filename, "w");
698  if (!out) {
699  perror(filename);
700  return;
701  }
702  fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
703  fprintf(out, "<SmoothStreamingMedia MajorVersion=\"2\" MinorVersion=\"0\" "
704  "Duration=\"%"PRId64 "\">\n", tracks->duration * 10);
705  if (tracks->video_track >= 0) {
706  struct Track *track = tracks->tracks[tracks->video_track];
707  struct Track *first_track = track;
708  int index = 0;
709  fprintf(out,
710  "\t<StreamIndex Type=\"video\" QualityLevels=\"%d\" "
711  "Chunks=\"%d\" "
712  "Url=\"QualityLevels({bitrate})/Fragments(video={start time})\">\n",
713  tracks->nb_video_tracks, track->chunks);
714  for (i = 0; i < tracks->nb_tracks; i++) {
715  track = tracks->tracks[i];
716  if (!track->is_video)
717  continue;
718  fprintf(out,
719  "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" "
720  "FourCC=\"%s\" MaxWidth=\"%d\" MaxHeight=\"%d\" "
721  "CodecPrivateData=\"",
722  index, track->bitrate, track->fourcc, track->width, track->height);
723  for (j = 0; j < track->codec_private_size; j++)
724  fprintf(out, "%02X", track->codec_private[j]);
725  fprintf(out, "\" />\n");
726  index++;
727  if (track->chunks != first_track->chunks)
728  fprintf(stderr, "Mismatched number of video chunks in %s (id: %d, chunks %d) and %s (id: %d, chunks %d)\n",
729  track->name, track->track_id, track->chunks, first_track->name, first_track->track_id, first_track->chunks);
730  }
731  print_track_chunks(out, tracks, tracks->video_track, "video");
732  fprintf(out, "\t</StreamIndex>\n");
733  }
734  if (tracks->audio_track >= 0) {
735  struct Track *track = tracks->tracks[tracks->audio_track];
736  struct Track *first_track = track;
737  int index = 0;
738  fprintf(out,
739  "\t<StreamIndex Type=\"audio\" QualityLevels=\"%d\" "
740  "Chunks=\"%d\" "
741  "Url=\"QualityLevels({bitrate})/Fragments(audio={start time})\">\n",
742  tracks->nb_audio_tracks, track->chunks);
743  for (i = 0; i < tracks->nb_tracks; i++) {
744  track = tracks->tracks[i];
745  if (!track->is_audio)
746  continue;
747  fprintf(out,
748  "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" "
749  "FourCC=\"%s\" SamplingRate=\"%d\" Channels=\"%d\" "
750  "BitsPerSample=\"16\" PacketSize=\"%d\" "
751  "AudioTag=\"%d\" CodecPrivateData=\"",
752  index, track->bitrate, track->fourcc, track->sample_rate,
753  track->channels, track->blocksize, track->tag);
754  for (j = 0; j < track->codec_private_size; j++)
755  fprintf(out, "%02X", track->codec_private[j]);
756  fprintf(out, "\" />\n");
757  index++;
758  if (track->chunks != first_track->chunks)
759  fprintf(stderr, "Mismatched number of audio chunks in %s and %s\n",
760  track->name, first_track->name);
761  }
762  print_track_chunks(out, tracks, tracks->audio_track, "audio");
763  fprintf(out, "\t</StreamIndex>\n");
764  }
765  fprintf(out, "</SmoothStreamingMedia>\n");
766  fclose(out);
767 }
768 
769 static void clean_tracks(struct Tracks *tracks)
770 {
771  int i;
772  for (i = 0; i < tracks->nb_tracks; i++) {
773  av_freep(&tracks->tracks[i]->codec_private);
774  av_freep(&tracks->tracks[i]->offsets);
775  av_freep(&tracks->tracks[i]);
776  }
777  av_freep(&tracks->tracks);
778  tracks->nb_tracks = 0;
779 }
780 
781 int main(int argc, char **argv)
782 {
783  const char *basename = NULL;
784  const char *path_prefix = "", *ismc_prefix = "";
785  const char *output_prefix = "";
786  char output_prefix_buf[2048];
787  int split = 0, ismf = 0, i;
788  struct Tracks tracks = { 0, .video_track = -1, .audio_track = -1 };
789 
790  av_register_all();
791 
792  for (i = 1; i < argc; i++) {
793  if (!strcmp(argv[i], "-n")) {
794  basename = argv[i + 1];
795  i++;
796  } else if (!strcmp(argv[i], "-path-prefix")) {
797  path_prefix = argv[i + 1];
798  i++;
799  } else if (!strcmp(argv[i], "-ismc-prefix")) {
800  ismc_prefix = argv[i + 1];
801  i++;
802  } else if (!strcmp(argv[i], "-output")) {
803  output_prefix = argv[i + 1];
804  i++;
805  if (output_prefix[strlen(output_prefix) - 1] != '/') {
806  snprintf(output_prefix_buf, sizeof(output_prefix_buf),
807  "%s/", output_prefix);
808  output_prefix = output_prefix_buf;
809  }
810  } else if (!strcmp(argv[i], "-split")) {
811  split = 1;
812  } else if (!strcmp(argv[i], "-ismf")) {
813  ismf = 1;
814  } else if (argv[i][0] == '-') {
815  return usage(argv[0], 1);
816  } else {
817  if (!basename)
818  ismf = 0;
819  if (handle_file(&tracks, argv[i], split, ismf,
820  basename, output_prefix))
821  return 1;
822  }
823  }
824  if (!tracks.nb_tracks || (!basename && !split))
825  return usage(argv[0], 1);
826 
827  if (!split)
828  output_server_manifest(&tracks, basename, output_prefix,
829  path_prefix, ismc_prefix);
830  output_client_manifest(&tracks, basename, output_prefix, split);
831 
832  clean_tracks(&tracks);
833 
834  return 0;
835 }
static int copy_tag(AVIOContext *in, AVIOContext *out, int32_t tag_name)
Definition: ismindex.c:109
#define NULL
Definition: coverity.c:32
Bytestream IO Context.
Definition: avio.h:68
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:281
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1112
static int usage(const char *argv0, int ret)
Definition: ismindex.c:58
#define MOV_TFHD_DEFAULT_DURATION
Definition: isom.h:217
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:63
else temp
Definition: vf_mcdeint.c:257
#define MOV_TRUN_SAMPLE_CTS
Definition: isom.h:228
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:203
#define AVIO_FLAG_READ
read-only
Definition: avio.h:368
#define AVIO_FLAG_WRITE
write-only
Definition: avio.h:369
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_dlog(ac->avr,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
static int expect_tag(int32_t got_tag, int32_t expected_tag)
Definition: ismindex.c:97
int version
Definition: avisynth_c.h:667
int is_audio
Definition: ismindex.c:76
static void print_track_chunks(FILE *out, struct Tracks *tracks, int main, const char *type)
Definition: ismindex.c:651
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1100
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
Definition: avcodec.h:2020
int tag
Definition: ismindex.c:86
int height
Definition: ismindex.c:77
Format I/O context.
Definition: avformat.h:1226
uint8_t
Round toward +infinity.
Definition: mathematics.h:74
struct MoofOffset * offsets
Definition: ismindex.c:82
miscellaneous OS support macros and functions.
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:681
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:67
int id
Format-specific stream ID.
Definition: avformat.h:814
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1353
int bitrate
Definition: ismindex.c:74
int nb_tracks
Definition: ismindex.c:90
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1294
static int skip_fragment(AVIOContext *in)
Definition: ismindex.c:168
#define MOV_TRUN_SAMPLE_SIZE
Definition: isom.h:226
uint32_t tag
Definition: movenc.c:1332
#define AVERROR_EOF
End of file.
Definition: error.h:55
Definition: ismindex.c:71
int64_t time
Definition: ismindex.c:66
ptrdiff_t size
Definition: opengl_enc.c:101
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:748
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:273
static int64_t duration
Definition: ffplay.c:320
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:177
static int write_fragment(const char *filename, AVIOContext *in)
Definition: ismindex.c:147
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:537
int width
Definition: ismindex.c:77
int is_video
Definition: ismindex.c:76
int channels
Definition: ismindex.c:79
#define AV_RB16
Definition: intreadwrite.h:53
#define AVERROR(e)
Definition: error.h:43
int avio_close(AVIOContext *s)
Close the resource accessed by the AVIOContext s and free it.
Definition: aviobuf.c:924
int sample_rate
Definition: ismindex.c:79
static void output_client_manifest(struct Tracks *tracks, const char *basename, const char *output_prefix, int split)
Definition: ismindex.c:686
static int read_mfra(struct Tracks *tracks, int start_index, const char *file, int split, int ismf, const char *basename, const char *output_prefix)
Definition: ismindex.c:409
int64_t duration
Definition: ismindex.c:91
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
#define FFMAX(a, b)
Definition: common.h:79
static char * split(char *message, char delim)
Definition: af_channelmap.c:82
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:528
const char * fourcc
Definition: ismindex.c:84
AVCodecContext * codec
Codec context associated with this stream.
Definition: avformat.h:826
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1282
int bit_rate
the average bitrate
Definition: avcodec.h:1303
int void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:197
unsigned int avio_rb24(AVIOContext *s)
Definition: aviobuf.c:674
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:247
#define FFMIN(a, b)
Definition: common.h:81
static int handle_file(struct Tracks *tracks, const char *file, int split, int ismf, const char *basename, const char *output_prefix)
Definition: ismindex.c:492
ret
Definition: avfilter.c:974
int width
picture width / height.
Definition: avcodec.h:1412
int chunks
Definition: ismindex.c:78
int32_t
int audio_track
Definition: ismindex.c:93
#define MOV_TRUN_SAMPLE_DURATION
Definition: isom.h:225
Stream structure.
Definition: avformat.h:807
static int64_t read_moof_duration(AVIOContext *in, int64_t offset)
Definition: ismindex.c:266
const char * name
Definition: ismindex.c:72
enum AVMediaType codec_type
Definition: avcodec.h:1247
static int skip_tag(AVIOContext *in, int32_t tag_name)
Definition: ismindex.c:134
enum AVCodecID codec_id
Definition: avcodec.h:1256
int sample_rate
samples per second
Definition: avcodec.h:1983
int64_t duration
Definition: ismindex.c:73
static int get_private_data(struct Track *track, AVCodecContext *codec)
Definition: ismindex.c:450
main external API structure.
Definition: avcodec.h:1239
uint8_t * codec_private
Definition: ismindex.c:80
#define MOV_TRUN_FIRST_SAMPLE_FLAGS
Definition: isom.h:224
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1271
int timescale
Definition: ismindex.c:83
void * buf
Definition: avisynth_c.h:595
GLint GLenum type
Definition: opengl_enc.c:105
int extradata_size
Definition: avcodec.h:1354
#define AV_WB32(p, v)
Definition: intreadwrite.h:419
int index
Definition: gxfenc.c:89
int avio_open2(AVIOContext **s, const char *url, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options)
Create and initialize a AVIOContext for accessing the resource indicated by url.
Definition: aviobuf.c:907
#define snprintf
Definition: snprintf.h:34
static void clean_tracks(struct Tracks *tracks)
Definition: ismindex.c:769
#define MOV_TRUN_SAMPLE_FLAGS
Definition: isom.h:227
struct Track ** tracks
Definition: ismindex.c:92
#define MOV_TFHD_STSD_ID
Definition: isom.h:216
int track_id
Definition: ismindex.c:75
static int flags
Definition: cpu.c:47
int64_t duration
Definition: ismindex.c:68
int codec_private_size
Definition: ismindex.c:81
int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
Put a description of the AVERROR code errnum in errbuf.
Definition: error.c:68
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:866
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_dlog(ac->avr,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> out
static int get_video_private_data(struct Track *track, AVCodecContext *codec)
Definition: ismindex.c:461
Main libavformat public API header.
int video_track
Definition: ismindex.c:93
int blocksize
Definition: ismindex.c:85
#define MOV_TFHD_BASE_DATA_OFFSET
Definition: isom.h:215
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
Read packets of a media file to get stream information.
Definition: utils.c:3019
static int write_fragments(struct Tracks *tracks, int start_index, AVIOContext *in, const char *basename, int split, int ismf, const char *output_prefix)
Definition: ismindex.c:177
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:206
int den
denominator
Definition: rational.h:45
void avformat_close_input(AVFormatContext **s)
Close an opened input AVFormatContext.
Definition: utils.c:3635
#define MKBETAG(a, b, c, d)
Definition: common.h:320
#define av_free(p)
int len
int channels
number of audio channels
Definition: avcodec.h:1984
int avformat_open_input(AVFormatContext **ps, const char *url, AVInputFormat *fmt, AVDictionary **options)
Open an input stream and read the header.
Definition: utils.c:401
#define MOV_TRUN_DATA_OFFSET
Definition: isom.h:223
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:228
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:326
#define av_freep(p)
static int read_tfra(struct Tracks *tracks, int start_index, AVIOContext *f)
Definition: ismindex.c:318
int nb_audio_tracks
Definition: ismindex.c:94
int main(int argc, char **argv)
Definition: ismindex.c:781
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:849
void av_register_all(void)
Initialize libavformat and register all the muxers, demuxers and protocols.
Definition: allformats.c:51
static void output_server_manifest(struct Tracks *tracks, const char *basename, const char *output_prefix, const char *path_prefix, const char *ismc_prefix)
Definition: ismindex.c:613
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:250
int64_t offset
Definition: ismindex.c:67
static int64_t read_trun_duration(AVIOContext *in, int default_duration, int64_t end)
Definition: ismindex.c:230
int nb_video_tracks
Definition: ismindex.c:94