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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 "libavformat/avformat.h"
51 #include "libavformat/isom.h"
52 #include "libavformat/os_support.h"
53 #include "libavutil/intreadwrite.h"
54 #include "libavutil/mathematics.h"
55 
56 static int usage(const char *argv0, int ret)
57 {
58  fprintf(stderr, "%s [-split] [-ismf] [-n basename] [-path-prefix prefix] "
59  "[-ismc-prefix prefix] [-output dir] file1 [file2] ...\n", argv0);
60  return ret;
61 }
62 
63 struct MoofOffset {
64  int64_t time;
65  int64_t offset;
66  int64_t duration;
67 };
68 
69 struct Track {
70  const char *name;
71  int64_t duration;
72  int bitrate;
73  int track_id;
75  int width, height;
76  int chunks;
81  int timescale;
82  const char *fourcc;
83  int blocksize;
84  int tag;
85 };
86 
87 struct Tracks {
88  int nb_tracks;
89  int64_t duration;
90  struct Track **tracks;
93 };
94 
95 static int expect_tag(int32_t got_tag, int32_t expected_tag) {
96  if (got_tag != expected_tag) {
97  char got_tag_str[4], expected_tag_str[4];
98  AV_WB32(got_tag_str, got_tag);
99  AV_WB32(expected_tag_str, expected_tag);
100  fprintf(stderr, "wanted tag %.4s, got %.4s\n", expected_tag_str,
101  got_tag_str);
102  return -1;
103  }
104  return 0;
105 }
106 
107 static int copy_tag(AVIOContext *in, AVIOContext *out, int32_t tag_name)
108 {
109  int32_t size, tag;
110 
111  size = avio_rb32(in);
112  tag = avio_rb32(in);
113  avio_wb32(out, size);
114  avio_wb32(out, tag);
115  if (expect_tag(tag, tag_name) != 0)
116  return -1;
117  size -= 8;
118  while (size > 0) {
119  char buf[1024];
120  int len = FFMIN(sizeof(buf), size);
121  int got;
122  if ((got = avio_read(in, buf, len)) != len) {
123  fprintf(stderr, "short read, wanted %d, got %d\n", len, got);
124  break;
125  }
126  avio_write(out, buf, len);
127  size -= len;
128  }
129  return 0;
130 }
131 
132 static int skip_tag(AVIOContext *in, int32_t tag_name)
133 {
134  int64_t pos = avio_tell(in);
135  int32_t size, tag;
136 
137  size = avio_rb32(in);
138  tag = avio_rb32(in);
139  if (expect_tag(tag, tag_name) != 0)
140  return -1;
141  avio_seek(in, pos + size, SEEK_SET);
142  return 0;
143 }
144 
145 static int write_fragment(const char *filename, AVIOContext *in)
146 {
147  AVIOContext *out = NULL;
148  int ret;
149 
150  if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, NULL, NULL)) < 0) {
151  char errbuf[100];
152  av_strerror(ret, errbuf, sizeof(errbuf));
153  fprintf(stderr, "Unable to open %s: %s\n", filename, errbuf);
154  return ret;
155  }
156  ret = copy_tag(in, out, MKBETAG('m', 'o', 'o', 'f'));
157  if (!ret)
158  ret = copy_tag(in, out, MKBETAG('m', 'd', 'a', 't'));
159 
160  avio_flush(out);
161  avio_close(out);
162 
163  return ret;
164 }
165 
167 {
168  int ret;
169  ret = skip_tag(in, MKBETAG('m', 'o', 'o', 'f'));
170  if (!ret)
171  ret = skip_tag(in, MKBETAG('m', 'd', 'a', 't'));
172  return ret;
173 }
174 
175 static int write_fragments(struct Tracks *tracks, int start_index,
176  AVIOContext *in, const char *basename,
177  int split, int ismf, const char* output_prefix)
178 {
179  char dirname[2048], filename[2048], idxname[2048];
180  int i, j, ret = 0, fragment_ret;
181  FILE* out = NULL;
182 
183  if (ismf) {
184  snprintf(idxname, sizeof(idxname), "%s%s.ismf", output_prefix, basename);
185  out = fopen(idxname, "w");
186  if (!out) {
187  ret = AVERROR(errno);
188  perror(idxname);
189  goto fail;
190  }
191  }
192  for (i = start_index; i < tracks->nb_tracks; i++) {
193  struct Track *track = tracks->tracks[i];
194  const char *type = track->is_video ? "video" : "audio";
195  snprintf(dirname, sizeof(dirname), "%sQualityLevels(%d)", output_prefix, track->bitrate);
196  if (split) {
197  if (mkdir(dirname, 0777) == -1 && errno != EEXIST) {
198  ret = AVERROR(errno);
199  perror(dirname);
200  goto fail;
201  }
202  }
203  for (j = 0; j < track->chunks; j++) {
204  snprintf(filename, sizeof(filename), "%s/Fragments(%s=%"PRId64")",
205  dirname, type, track->offsets[j].time);
206  avio_seek(in, track->offsets[j].offset, SEEK_SET);
207  if (ismf)
208  fprintf(out, "%s %"PRId64, filename, avio_tell(in));
209  if (split)
210  fragment_ret = write_fragment(filename, in);
211  else
212  fragment_ret = skip_fragment(in);
213  if (ismf)
214  fprintf(out, " %"PRId64"\n", avio_tell(in));
215  if (fragment_ret != 0) {
216  fprintf(stderr, "failed fragment %d in track %d (%s)\n", j,
217  track->track_id, track->name);
218  ret = fragment_ret;
219  }
220  }
221  }
222 fail:
223  if (out)
224  fclose(out);
225  return ret;
226 }
227 
228 static int64_t read_trun_duration(AVIOContext *in, int default_duration,
229  int64_t end)
230 {
231  int64_t dts = 0;
232  int64_t pos;
233  int flags, i;
234  int entries;
235  int64_t first_pts = 0;
236  int64_t max_pts = 0;
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  int64_t pts = dts;
252  if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(in);
253  if (flags & MOV_TRUN_SAMPLE_SIZE) avio_rb32(in);
254  if (flags & MOV_TRUN_SAMPLE_FLAGS) avio_rb32(in);
255  if (flags & MOV_TRUN_SAMPLE_CTS) pts += avio_rb32(in);
256  if (sample_duration < 0) {
257  fprintf(stderr, "Negative sample duration %d\n", sample_duration);
258  return -1;
259  }
260  if (i == 0)
261  first_pts = pts;
262  max_pts = FFMAX(max_pts, pts + sample_duration);
263  dts += sample_duration;
264  pos = avio_tell(in);
265  }
266 
267  return max_pts - first_pts;
268 }
269 
270 static int64_t read_moof_duration(AVIOContext *in, int64_t offset)
271 {
272  int64_t ret = -1;
273  int32_t moof_size, size, tag;
274  int64_t pos = 0;
275  int default_duration = 0;
276 
277  avio_seek(in, offset, SEEK_SET);
278  moof_size = avio_rb32(in);
279  tag = avio_rb32(in);
280  if (expect_tag(tag, MKBETAG('m', 'o', 'o', 'f')) != 0)
281  goto fail;
282  while (pos < offset + moof_size) {
283  pos = avio_tell(in);
284  size = avio_rb32(in);
285  tag = avio_rb32(in);
286  if (tag == MKBETAG('t', 'r', 'a', 'f')) {
287  int64_t traf_pos = pos;
288  int64_t traf_size = size;
289  while (pos < traf_pos + traf_size) {
290  pos = avio_tell(in);
291  size = avio_rb32(in);
292  tag = avio_rb32(in);
293  if (tag == MKBETAG('t', 'f', 'h', 'd')) {
294  int flags = 0;
295  avio_r8(in); /* version */
296  flags = avio_rb24(in);
297  avio_rb32(in); /* track_id */
298  if (flags & MOV_TFHD_BASE_DATA_OFFSET)
299  avio_rb64(in);
300  if (flags & MOV_TFHD_STSD_ID)
301  avio_rb32(in);
302  if (flags & MOV_TFHD_DEFAULT_DURATION)
303  default_duration = avio_rb32(in);
304  }
305  if (tag == MKBETAG('t', 'r', 'u', 'n')) {
306  return read_trun_duration(in, default_duration,
307  pos + size);
308  }
309  avio_seek(in, pos + size, SEEK_SET);
310  }
311  fprintf(stderr, "Couldn't find trun\n");
312  goto fail;
313  }
314  avio_seek(in, pos + size, SEEK_SET);
315  }
316  fprintf(stderr, "Couldn't find traf\n");
317 
318 fail:
319  return ret;
320 }
321 
322 static int read_tfra(struct Tracks *tracks, int start_index, AVIOContext *f)
323 {
324  int ret = AVERROR_EOF, track_id;
325  int version, fieldlength, i, j;
326  int64_t pos = avio_tell(f);
327  uint32_t size = avio_rb32(f);
328  struct Track *track = NULL;
329 
330  if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a'))
331  goto fail;
332  version = avio_r8(f);
333  avio_rb24(f);
334  track_id = avio_rb32(f); /* track id */
335  for (i = start_index; i < tracks->nb_tracks && !track; i++)
336  if (tracks->tracks[i]->track_id == track_id)
337  track = tracks->tracks[i];
338  if (!track) {
339  /* Ok, continue parsing the next atom */
340  ret = 0;
341  goto fail;
342  }
343  fieldlength = avio_rb32(f);
344  track->chunks = avio_rb32(f);
345  track->offsets = av_mallocz_array(track->chunks, sizeof(*track->offsets));
346  if (!track->offsets) {
347  track->chunks = 0;
348  ret = AVERROR(ENOMEM);
349  goto fail;
350  }
351  // The duration here is always the difference between consecutive
352  // start times.
353  for (i = 0; i < track->chunks; i++) {
354  if (version == 1) {
355  track->offsets[i].time = avio_rb64(f);
356  track->offsets[i].offset = avio_rb64(f);
357  } else {
358  track->offsets[i].time = avio_rb32(f);
359  track->offsets[i].offset = avio_rb32(f);
360  }
361  for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
362  avio_r8(f);
363  for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
364  avio_r8(f);
365  for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
366  avio_r8(f);
367  if (i > 0)
368  track->offsets[i - 1].duration = track->offsets[i].time -
369  track->offsets[i - 1].time;
370  }
371  if (track->chunks > 0) {
372  track->offsets[track->chunks - 1].duration = track->offsets[0].time +
373  track->duration -
374  track->offsets[track->chunks - 1].time;
375  }
376  // Now try to read the actual durations from the trun sample data.
377  for (i = 0; i < track->chunks; i++) {
378  int64_t duration = read_moof_duration(f, track->offsets[i].offset);
379  if (duration > 0 && llabs(duration - track->offsets[i].duration) > 3) {
380  // 3 allows for integer duration to drift a few units,
381  // e.g., for 1/3 durations
382  track->offsets[i].duration = duration;
383  }
384  }
385  if (track->chunks > 0) {
386  if (track->offsets[track->chunks - 1].duration <= 0) {
387  fprintf(stderr, "Calculated last chunk duration for track %d "
388  "was non-positive (%"PRId64"), probably due to missing "
389  "fragments ", track->track_id,
390  track->offsets[track->chunks - 1].duration);
391  if (track->chunks > 1) {
392  track->offsets[track->chunks - 1].duration =
393  track->offsets[track->chunks - 2].duration;
394  } else {
395  track->offsets[track->chunks - 1].duration = 1;
396  }
397  fprintf(stderr, "corrected to %"PRId64"\n",
398  track->offsets[track->chunks - 1].duration);
399  track->duration = track->offsets[track->chunks - 1].time +
400  track->offsets[track->chunks - 1].duration -
401  track->offsets[0].time;
402  fprintf(stderr, "Track duration corrected to %"PRId64"\n",
403  track->duration);
404  }
405  }
406  ret = 0;
407 
408 fail:
409  avio_seek(f, pos + size, SEEK_SET);
410  return ret;
411 }
412 
413 static int read_mfra(struct Tracks *tracks, int start_index,
414  const char *file, int split, int ismf,
415  const char *basename, const char* output_prefix)
416 {
417  int err = 0;
418  const char* err_str = "";
419  AVIOContext *f = NULL;
420  int32_t mfra_size;
421 
422  if ((err = avio_open2(&f, file, AVIO_FLAG_READ, NULL, NULL)) < 0)
423  goto fail;
424  avio_seek(f, avio_size(f) - 4, SEEK_SET);
425  mfra_size = avio_rb32(f);
426  avio_seek(f, -mfra_size, SEEK_CUR);
427  if (avio_rb32(f) != mfra_size) {
428  err = AVERROR_INVALIDDATA;
429  err_str = "mfra size mismatch";
430  goto fail;
431  }
432  if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
433  err = AVERROR_INVALIDDATA;
434  err_str = "mfra tag mismatch";
435  goto fail;
436  }
437  while (!read_tfra(tracks, start_index, f)) {
438  /* Empty */
439  }
440 
441  if (split || ismf)
442  err = write_fragments(tracks, start_index, f, basename, split, ismf,
443  output_prefix);
444  err_str = "error in write_fragments";
445 
446 fail:
447  if (f)
448  avio_close(f);
449  if (err)
450  fprintf(stderr, "Unable to read the MFRA atom in %s (%s)\n", file, err_str);
451  return err;
452 }
453 
454 static int get_private_data(struct Track *track, AVCodecParameters *codecpar)
455 {
456  track->codec_private_size = 0;
457  track->codec_private = av_mallocz(codecpar->extradata_size);
458  if (!track->codec_private)
459  return AVERROR(ENOMEM);
460  track->codec_private_size = codecpar->extradata_size;
461  memcpy(track->codec_private, codecpar->extradata, codecpar->extradata_size);
462  return 0;
463 }
464 
465 static int get_video_private_data(struct Track *track, AVCodecParameters *codecpar)
466 {
467  AVIOContext *io = NULL;
468  uint16_t sps_size, pps_size;
469  int err;
470 
471  if (codecpar->codec_id == AV_CODEC_ID_VC1)
472  return get_private_data(track, codecpar);
473 
474  if ((err = avio_open_dyn_buf(&io)) < 0)
475  goto fail;
476  err = AVERROR(EINVAL);
477  if (codecpar->extradata_size < 11 || codecpar->extradata[0] != 1)
478  goto fail;
479  sps_size = AV_RB16(&codecpar->extradata[6]);
480  if (11 + sps_size > codecpar->extradata_size)
481  goto fail;
482  avio_wb32(io, 0x00000001);
483  avio_write(io, &codecpar->extradata[8], sps_size);
484  pps_size = AV_RB16(&codecpar->extradata[9 + sps_size]);
485  if (11 + sps_size + pps_size > codecpar->extradata_size)
486  goto fail;
487  avio_wb32(io, 0x00000001);
488  avio_write(io, &codecpar->extradata[11 + sps_size], pps_size);
489  err = 0;
490 
491 fail:
493  return err;
494 }
495 
496 static int handle_file(struct Tracks *tracks, const char *file, int split,
497  int ismf, const char *basename,
498  const char* output_prefix)
499 {
501  int err = 0, i, orig_tracks = tracks->nb_tracks;
502  char errbuf[50], *ptr;
503  struct Track *track;
504 
505  err = avformat_open_input(&ctx, file, NULL, NULL);
506  if (err < 0) {
507  av_strerror(err, errbuf, sizeof(errbuf));
508  fprintf(stderr, "Unable to open %s: %s\n", file, errbuf);
509  return 1;
510  }
511 
512  err = avformat_find_stream_info(ctx, NULL);
513  if (err < 0) {
514  av_strerror(err, errbuf, sizeof(errbuf));
515  fprintf(stderr, "Unable to identify %s: %s\n", file, errbuf);
516  goto fail;
517  }
518 
519  if (ctx->nb_streams < 1) {
520  fprintf(stderr, "No streams found in %s\n", file);
521  goto fail;
522  }
523 
524  for (i = 0; i < ctx->nb_streams; i++) {
525  struct Track **temp;
526  AVStream *st = ctx->streams[i];
527 
528  if (st->codecpar->bit_rate == 0) {
529  fprintf(stderr, "Skipping track %d in %s as it has zero bitrate\n",
530  st->id, file);
531  continue;
532  }
533 
534  track = av_mallocz(sizeof(*track));
535  if (!track) {
536  err = AVERROR(ENOMEM);
537  goto fail;
538  }
539  temp = av_realloc_array(tracks->tracks,
540  tracks->nb_tracks + 1,
541  sizeof(*tracks->tracks));
542  if (!temp) {
543  av_free(track);
544  err = AVERROR(ENOMEM);
545  goto fail;
546  }
547  tracks->tracks = temp;
548  tracks->tracks[tracks->nb_tracks] = track;
549 
550  track->name = file;
551  if ((ptr = strrchr(file, '/')))
552  track->name = ptr + 1;
553 
554  track->bitrate = st->codecpar->bit_rate;
555  track->track_id = st->id;
556  track->timescale = st->time_base.den;
557  track->duration = st->duration;
560 
561  if (!track->is_audio && !track->is_video) {
562  fprintf(stderr,
563  "Track %d in %s is neither video nor audio, skipping\n",
564  track->track_id, file);
565  av_freep(&tracks->tracks[tracks->nb_tracks]);
566  continue;
567  }
568 
569  tracks->duration = FFMAX(tracks->duration,
571  track->timescale, AV_ROUND_UP));
572 
573  if (track->is_audio) {
574  if (tracks->audio_track < 0)
575  tracks->audio_track = tracks->nb_tracks;
576  tracks->nb_audio_tracks++;
577  track->channels = st->codecpar->channels;
578  track->sample_rate = st->codecpar->sample_rate;
579  if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
580  track->fourcc = "AACL";
581  track->tag = 255;
582  track->blocksize = 4;
583  } else if (st->codecpar->codec_id == AV_CODEC_ID_WMAPRO) {
584  track->fourcc = "WMAP";
585  track->tag = st->codecpar->codec_tag;
586  track->blocksize = st->codecpar->block_align;
587  }
588  get_private_data(track, st->codecpar);
589  }
590  if (track->is_video) {
591  if (tracks->video_track < 0)
592  tracks->video_track = tracks->nb_tracks;
593  tracks->nb_video_tracks++;
594  track->width = st->codecpar->width;
595  track->height = st->codecpar->height;
596  if (st->codecpar->codec_id == AV_CODEC_ID_H264)
597  track->fourcc = "H264";
598  else if (st->codecpar->codec_id == AV_CODEC_ID_VC1)
599  track->fourcc = "WVC1";
600  get_video_private_data(track, st->codecpar);
601  }
602 
603  tracks->nb_tracks++;
604  }
605 
606  avformat_close_input(&ctx);
607 
608  err = read_mfra(tracks, orig_tracks, file, split, ismf, basename,
609  output_prefix);
610 
611 fail:
612  if (ctx)
613  avformat_close_input(&ctx);
614  return err;
615 }
616 
617 static void output_server_manifest(struct Tracks *tracks, const char *basename,
618  const char *output_prefix,
619  const char *path_prefix,
620  const char *ismc_prefix)
621 {
622  char filename[1000];
623  FILE *out;
624  int i;
625 
626  snprintf(filename, sizeof(filename), "%s%s.ism", output_prefix, basename);
627  out = fopen(filename, "w");
628  if (!out) {
629  perror(filename);
630  return;
631  }
632  fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
633  fprintf(out, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
634  fprintf(out, "\t<head>\n");
635  fprintf(out, "\t\t<meta name=\"clientManifestRelativePath\" "
636  "content=\"%s%s.ismc\" />\n", ismc_prefix, basename);
637  fprintf(out, "\t</head>\n");
638  fprintf(out, "\t<body>\n");
639  fprintf(out, "\t\t<switch>\n");
640  for (i = 0; i < tracks->nb_tracks; i++) {
641  struct Track *track = tracks->tracks[i];
642  const char *type = track->is_video ? "video" : "audio";
643  fprintf(out, "\t\t\t<%s src=\"%s%s\" systemBitrate=\"%d\">\n",
644  type, path_prefix, track->name, track->bitrate);
645  fprintf(out, "\t\t\t\t<param name=\"trackID\" value=\"%d\" "
646  "valueType=\"data\" />\n", track->track_id);
647  fprintf(out, "\t\t\t</%s>\n", type);
648  }
649  fprintf(out, "\t\t</switch>\n");
650  fprintf(out, "\t</body>\n");
651  fprintf(out, "</smil>\n");
652  fclose(out);
653 }
654 
655 static void print_track_chunks(FILE *out, struct Tracks *tracks, int main,
656  const char *type)
657 {
658  int i, j;
659  int64_t pos = 0;
660  struct Track *track = tracks->tracks[main];
661  int should_print_time_mismatch = 1;
662 
663  for (i = 0; i < track->chunks; i++) {
664  for (j = main + 1; j < tracks->nb_tracks; j++) {
665  if (tracks->tracks[j]->is_audio == track->is_audio) {
666  if (track->offsets[i].duration != tracks->tracks[j]->offsets[i].duration) {
667  fprintf(stderr, "Mismatched duration of %s chunk %d in %s (%d) and %s (%d)\n",
668  type, i, track->name, main, tracks->tracks[j]->name, j);
669  should_print_time_mismatch = 1;
670  }
671  if (track->offsets[i].time != tracks->tracks[j]->offsets[i].time) {
672  if (should_print_time_mismatch)
673  fprintf(stderr, "Mismatched (start) time of %s chunk %d in %s (%d) and %s (%d)\n",
674  type, i, track->name, main, tracks->tracks[j]->name, j);
675  should_print_time_mismatch = 0;
676  }
677  }
678  }
679  fprintf(out, "\t\t<c n=\"%d\" d=\"%"PRId64"\" ",
680  i, track->offsets[i].duration);
681  if (pos != track->offsets[i].time) {
682  fprintf(out, "t=\"%"PRId64"\" ", track->offsets[i].time);
683  pos = track->offsets[i].time;
684  }
685  pos += track->offsets[i].duration;
686  fprintf(out, "/>\n");
687  }
688 }
689 
690 static void output_client_manifest(struct Tracks *tracks, const char *basename,
691  const char *output_prefix, int split)
692 {
693  char filename[1000];
694  FILE *out;
695  int i, j;
696 
697  if (split)
698  snprintf(filename, sizeof(filename), "%sManifest", output_prefix);
699  else
700  snprintf(filename, sizeof(filename), "%s%s.ismc", output_prefix, basename);
701  out = fopen(filename, "w");
702  if (!out) {
703  perror(filename);
704  return;
705  }
706  fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
707  fprintf(out, "<SmoothStreamingMedia MajorVersion=\"2\" MinorVersion=\"0\" "
708  "Duration=\"%"PRId64 "\">\n", tracks->duration * 10);
709  if (tracks->video_track >= 0) {
710  struct Track *track = tracks->tracks[tracks->video_track];
711  struct Track *first_track = track;
712  int index = 0;
713  fprintf(out,
714  "\t<StreamIndex Type=\"video\" QualityLevels=\"%d\" "
715  "Chunks=\"%d\" "
716  "Url=\"QualityLevels({bitrate})/Fragments(video={start time})\">\n",
717  tracks->nb_video_tracks, track->chunks);
718  for (i = 0; i < tracks->nb_tracks; i++) {
719  track = tracks->tracks[i];
720  if (!track->is_video)
721  continue;
722  fprintf(out,
723  "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" "
724  "FourCC=\"%s\" MaxWidth=\"%d\" MaxHeight=\"%d\" "
725  "CodecPrivateData=\"",
726  index, track->bitrate, track->fourcc, track->width, track->height);
727  for (j = 0; j < track->codec_private_size; j++)
728  fprintf(out, "%02X", track->codec_private[j]);
729  fprintf(out, "\" />\n");
730  index++;
731  if (track->chunks != first_track->chunks)
732  fprintf(stderr, "Mismatched number of video chunks in %s (id: %d, chunks %d) and %s (id: %d, chunks %d)\n",
733  track->name, track->track_id, track->chunks, first_track->name, first_track->track_id, first_track->chunks);
734  }
735  print_track_chunks(out, tracks, tracks->video_track, "video");
736  fprintf(out, "\t</StreamIndex>\n");
737  }
738  if (tracks->audio_track >= 0) {
739  struct Track *track = tracks->tracks[tracks->audio_track];
740  struct Track *first_track = track;
741  int index = 0;
742  fprintf(out,
743  "\t<StreamIndex Type=\"audio\" QualityLevels=\"%d\" "
744  "Chunks=\"%d\" "
745  "Url=\"QualityLevels({bitrate})/Fragments(audio={start time})\">\n",
746  tracks->nb_audio_tracks, track->chunks);
747  for (i = 0; i < tracks->nb_tracks; i++) {
748  track = tracks->tracks[i];
749  if (!track->is_audio)
750  continue;
751  fprintf(out,
752  "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" "
753  "FourCC=\"%s\" SamplingRate=\"%d\" Channels=\"%d\" "
754  "BitsPerSample=\"16\" PacketSize=\"%d\" "
755  "AudioTag=\"%d\" CodecPrivateData=\"",
756  index, track->bitrate, track->fourcc, track->sample_rate,
757  track->channels, track->blocksize, track->tag);
758  for (j = 0; j < track->codec_private_size; j++)
759  fprintf(out, "%02X", track->codec_private[j]);
760  fprintf(out, "\" />\n");
761  index++;
762  if (track->chunks != first_track->chunks)
763  fprintf(stderr, "Mismatched number of audio chunks in %s and %s\n",
764  track->name, first_track->name);
765  }
766  print_track_chunks(out, tracks, tracks->audio_track, "audio");
767  fprintf(out, "\t</StreamIndex>\n");
768  }
769  fprintf(out, "</SmoothStreamingMedia>\n");
770  fclose(out);
771 }
772 
773 static void clean_tracks(struct Tracks *tracks)
774 {
775  int i;
776  for (i = 0; i < tracks->nb_tracks; i++) {
777  av_freep(&tracks->tracks[i]->codec_private);
778  av_freep(&tracks->tracks[i]->offsets);
779  av_freep(&tracks->tracks[i]);
780  }
781  av_freep(&tracks->tracks);
782  tracks->nb_tracks = 0;
783 }
784 
785 int main(int argc, char **argv)
786 {
787  const char *basename = NULL;
788  const char *path_prefix = "", *ismc_prefix = "";
789  const char *output_prefix = "";
790  char output_prefix_buf[2048];
791  int split = 0, ismf = 0, i;
792  struct Tracks tracks = { 0, .video_track = -1, .audio_track = -1 };
793 
794  av_register_all();
795 
796  for (i = 1; i < argc; i++) {
797  if (!strcmp(argv[i], "-n")) {
798  basename = argv[i + 1];
799  i++;
800  } else if (!strcmp(argv[i], "-path-prefix")) {
801  path_prefix = argv[i + 1];
802  i++;
803  } else if (!strcmp(argv[i], "-ismc-prefix")) {
804  ismc_prefix = argv[i + 1];
805  i++;
806  } else if (!strcmp(argv[i], "-output")) {
807  output_prefix = argv[i + 1];
808  i++;
809  if (output_prefix[strlen(output_prefix) - 1] != '/') {
810  snprintf(output_prefix_buf, sizeof(output_prefix_buf),
811  "%s/", output_prefix);
812  output_prefix = output_prefix_buf;
813  }
814  } else if (!strcmp(argv[i], "-split")) {
815  split = 1;
816  } else if (!strcmp(argv[i], "-ismf")) {
817  ismf = 1;
818  } else if (argv[i][0] == '-') {
819  return usage(argv[0], 1);
820  } else {
821  if (!basename)
822  ismf = 0;
823  if (handle_file(&tracks, argv[i], split, ismf,
824  basename, output_prefix))
825  return 1;
826  }
827  }
828  if (!tracks.nb_tracks || (!basename && !split))
829  return usage(argv[0], 1);
830 
831  if (!split)
832  output_server_manifest(&tracks, basename, output_prefix,
833  path_prefix, ismc_prefix);
834  output_client_manifest(&tracks, basename, output_prefix, split);
835 
836  clean_tracks(&tracks);
837 
838  return 0;
839 }
static int copy_tag(AVIOContext *in, AVIOContext *out, int32_t tag_name)
Definition: ismindex.c:107
#define NULL
Definition: coverity.c:32
Bytestream IO Context.
Definition: avio.h:161
#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:334
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1346
static int usage(const char *argv0, int ret)
Definition: ismindex.c:56
#define MOV_TFHD_DEFAULT_DURATION
Definition: isom.h:285
else temp
Definition: vf_mcdeint.c:256
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:4152
#define MOV_TRUN_SAMPLE_CTS
Definition: isom.h:296
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:244
#define AVIO_FLAG_READ
read-only
Definition: avio.h:660
#define AVIO_FLAG_WRITE
write-only
Definition: avio.h:661
static int expect_tag(int32_t got_tag, int32_t expected_tag)
Definition: ismindex.c:95
int version
Definition: avisynth_c.h:766
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:222
int is_audio
Definition: ismindex.c:74
static void print_track_chunks(FILE *out, struct Tracks *tracks, int main, const char *type)
Definition: ismindex.c:655
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
Definition: bytestream.h:87
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1317
int tag
Definition: ismindex.c:84
This struct describes the properties of an encoded stream.
Definition: avcodec.h:4144
int height
Definition: ismindex.c:75
Format I/O context.
Definition: avformat.h:1349
uint8_t
Round toward +infinity.
Definition: mathematics.h:83
struct MoofOffset * offsets
Definition: ismindex.c:80
int width
Video only.
Definition: avcodec.h:4218
miscellaneous OS support macros and functions.
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:794
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
int id
Format-specific stream ID.
Definition: avformat.h:896
int bitrate
Definition: ismindex.c:72
int nb_tracks
Definition: ismindex.c:88
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1417
int64_t duration
Definition: movenc.c:63
static int skip_fragment(AVIOContext *in)
Definition: ismindex.c:166
static int flags
Definition: log.c:57
#define MOV_TRUN_SAMPLE_SIZE
Definition: isom.h:294
uint32_t tag
Definition: movenc.c:1409
#define AVERROR_EOF
End of file.
Definition: error.h:55
Definition: ismindex.c:69
int64_t time
Definition: ismindex.c:64
ptrdiff_t size
Definition: opengl_enc.c:101
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:861
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:556
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:216
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:184
static int write_fragment(const char *filename, AVIOContext *in)
Definition: ismindex.c:145
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:638
int width
Definition: ismindex.c:75
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: avcodec.h:4181
int is_video
Definition: ismindex.c:74
int channels
Definition: ismindex.c:77
#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:1116
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:4148
int sample_rate
Definition: ismindex.c:77
static void output_client_manifest(struct Tracks *tracks, const char *basename, const char *output_prefix, int split)
Definition: ismindex.c:690
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:413
int64_t duration
Definition: ismindex.c:89
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
#define FFMAX(a, b)
Definition: common.h:94
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:229
#define fail()
Definition: checkasm.h:109
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:4170
static char * split(char *message, char delim)
Definition: af_channelmap.c:81
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:629
const char * fourcc
Definition: ismindex.c:82
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1405
int block_align
Audio only.
Definition: avcodec.h:4269
int void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:236
unsigned int avio_rb24(AVIOContext *s)
Definition: aviobuf.c:787
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
#define FFMIN(a, b)
Definition: common.h:96
static int handle_file(struct Tracks *tracks, const char *file, int split, int ismf, const char *basename, const char *output_prefix)
Definition: ismindex.c:496
int chunks
Definition: ismindex.c:76
int32_t
AVFormatContext * ctx
Definition: movenc.c:48
int audio_track
Definition: ismindex.c:91
#define MOV_TRUN_SAMPLE_DURATION
Definition: isom.h:293
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
Stream structure.
Definition: avformat.h:889
static int64_t read_moof_duration(AVIOContext *in, int64_t offset)
Definition: ismindex.c:270
const char * name
Definition: ismindex.c:70
static int skip_tag(AVIOContext *in, int32_t tag_name)
Definition: ismindex.c:132
int64_t duration
Definition: ismindex.c:71
uint8_t * codec_private
Definition: ismindex.c:78
#define MOV_TRUN_FIRST_SAMPLE_FLAGS
Definition: isom.h:292
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_log(ac->avr, AV_LOG_TRACE,"%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
int timescale
Definition: ismindex.c:81
void * buf
Definition: avisynth_c.h:690
GLint GLenum type
Definition: opengl_enc.c:105
#define AV_WB32(p, v)
Definition: intreadwrite.h:424
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:1104
#define snprintf
Definition: snprintf.h:34
static void clean_tracks(struct Tracks *tracks)
Definition: ismindex.c:773
#define MOV_TRUN_SAMPLE_FLAGS
Definition: isom.h:295
struct Track ** tracks
Definition: ismindex.c:90
#define MOV_TFHD_STSD_ID
Definition: isom.h:284
int track_id
Definition: ismindex.c:73
static int64_t pts
Global timestamp for the audio frames.
int64_t duration
Definition: ismindex.c:66
int codec_private_size
Definition: ismindex.c:79
int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
Put a description of the AVERROR code errnum in errbuf.
Definition: error.c:105
static int get_video_private_data(struct Track *track, AVCodecParameters *codecpar)
Definition: ismindex.c:465
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:946
int sample_rate
Audio only.
Definition: avcodec.h:4262
Main libavformat public API header.
int video_track
Definition: ismindex.c:91
int blocksize
Definition: ismindex.c:83
#define MOV_TFHD_BASE_DATA_OFFSET
Definition: isom.h:283
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
Read packets of a media file to get stream information.
Definition: utils.c:3497
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:175
int den
Denominator.
Definition: rational.h:60
void avformat_close_input(AVFormatContext **s)
Close an opened input AVFormatContext.
Definition: utils.c:4343
#define MKBETAG(a, b, c, d)
Definition: common.h:343
#define av_free(p)
int len
int avformat_open_input(AVFormatContext **ps, const char *url, AVInputFormat *fmt, AVDictionary **options)
Open an input stream and read the header.
Definition: utils.c:510
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:4166
#define MOV_TRUN_DATA_OFFSET
Definition: isom.h:291
int channels
Audio only.
Definition: avcodec.h:4258
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:382
FILE * out
Definition: movenc.c:54
#define av_freep(p)
static int read_tfra(struct Tracks *tracks, int start_index, AVIOContext *f)
Definition: ismindex.c:322
static int get_private_data(struct Track *track, AVCodecParameters *codecpar)
Definition: ismindex.c:454
AVCodecParameters * codecpar
Definition: avformat.h:1252
int nb_audio_tracks
Definition: ismindex.c:92
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:4156
int main(int argc, char **argv)
Definition: ismindex.c:785
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:926
void av_register_all(void)
Initialize libavformat and register all the muxers, demuxers and protocols.
Definition: allformats.c:390
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:617
int64_t offset
Definition: ismindex.c:65
static int64_t read_trun_duration(AVIOContext *in, int default_duration, int64_t end)
Definition: ismindex.c:228
int nb_video_tracks
Definition: ismindex.c:92