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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
58static 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
65struct MoofOffset {
66 int64_t time;
67 int64_t offset;
68 int64_t duration;
69};
70
71struct Track {
72 const char *name;
73 int64_t duration;
74 int bitrate;
75 int track_id;
76 int is_audio, is_video;
77 int width, height;
78 int chunks;
79 int sample_rate, channels;
80 uint8_t *codec_private;
81 int codec_private_size;
82 struct MoofOffset *offsets;
83 int timescale;
84 const char *fourcc;
85 int blocksize;
86 int tag;
87};
88
89struct Tracks {
90 int nb_tracks;
91 int64_t duration;
92 struct Track **tracks;
93 int video_track, audio_track;
94 int nb_video_tracks, nb_audio_tracks;
95};
96
97static 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
109static 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
134static 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
147static 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
168static int skip_fragment(AVIOContext *in)
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
177static 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 }
224fail:
225 if (out)
226 fclose(out);
227 return ret;
228}
229
230static int64_t read_trun_duration(AVIOContext *in, int default_duration,
231 int64_t end)
232{
233 int64_t dts = 0;
234 int64_t pos;
235 int flags, i;
236 int entries;
237 int64_t first_pts = 0;
238 int64_t max_pts = 0;
239 avio_r8(in); /* version */
240 flags = avio_rb24(in);
241 if (default_duration <= 0 && !(flags & MOV_TRUN_SAMPLE_DURATION)) {
242 fprintf(stderr, "No sample duration in trun flags\n");
243 return -1;
244 }
245 entries = avio_rb32(in);
246
247 if (flags & MOV_TRUN_DATA_OFFSET) avio_rb32(in);
248 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) avio_rb32(in);
249
250 pos = avio_tell(in);
251 for (i = 0; i < entries && pos < end; i++) {
252 int sample_duration = default_duration;
253 int64_t pts = dts;
254 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(in);
255 if (flags & MOV_TRUN_SAMPLE_SIZE) avio_rb32(in);
256 if (flags & MOV_TRUN_SAMPLE_FLAGS) avio_rb32(in);
257 if (flags & MOV_TRUN_SAMPLE_CTS) pts += avio_rb32(in);
258 if (sample_duration < 0) {
259 fprintf(stderr, "Negative sample duration %d\n", sample_duration);
260 return -1;
261 }
262 if (i == 0)
263 first_pts = pts;
264 max_pts = FFMAX(max_pts, pts + sample_duration);
265 dts += sample_duration;
266 pos = avio_tell(in);
267 }
268
269 return max_pts - first_pts;
270}
271
272static int64_t read_moof_duration(AVIOContext *in, int64_t offset)
273{
274 int64_t ret = -1;
275 int32_t moof_size, size, tag;
276 int64_t pos = 0;
277 int default_duration = 0;
278
279 avio_seek(in, offset, SEEK_SET);
280 moof_size = avio_rb32(in);
281 tag = avio_rb32(in);
282 if (expect_tag(tag, MKBETAG('m', 'o', 'o', 'f')) != 0)
283 goto fail;
284 while (pos < offset + moof_size) {
285 pos = avio_tell(in);
286 size = avio_rb32(in);
287 tag = avio_rb32(in);
288 if (tag == MKBETAG('t', 'r', 'a', 'f')) {
289 int64_t traf_pos = pos;
290 int64_t traf_size = size;
291 while (pos < traf_pos + traf_size) {
292 pos = avio_tell(in);
293 size = avio_rb32(in);
294 tag = avio_rb32(in);
295 if (tag == MKBETAG('t', 'f', 'h', 'd')) {
296 int flags = 0;
297 avio_r8(in); /* version */
298 flags = avio_rb24(in);
299 avio_rb32(in); /* track_id */
300 if (flags & MOV_TFHD_BASE_DATA_OFFSET)
301 avio_rb64(in);
302 if (flags & MOV_TFHD_STSD_ID)
303 avio_rb32(in);
304 if (flags & MOV_TFHD_DEFAULT_DURATION)
305 default_duration = avio_rb32(in);
306 }
307 if (tag == MKBETAG('t', 'r', 'u', 'n')) {
308 return read_trun_duration(in, default_duration,
309 pos + size);
310 }
311 avio_seek(in, pos + size, SEEK_SET);
312 }
313 fprintf(stderr, "Couldn't find trun\n");
314 goto fail;
315 }
316 avio_seek(in, pos + size, SEEK_SET);
317 }
318 fprintf(stderr, "Couldn't find traf\n");
319
320fail:
321 return ret;
322}
323
324static int read_tfra(struct Tracks *tracks, int start_index, AVIOContext *f)
325{
326 int ret = AVERROR_EOF, track_id;
327 int version, fieldlength, i, j;
328 int64_t pos = avio_tell(f);
329 uint32_t size = avio_rb32(f);
330 struct Track *track = NULL;
331
332 if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a'))
333 goto fail;
334 version = avio_r8(f);
335 avio_rb24(f);
336 track_id = avio_rb32(f); /* track id */
337 for (i = start_index; i < tracks->nb_tracks && !track; i++)
338 if (tracks->tracks[i]->track_id == track_id)
339 track = tracks->tracks[i];
340 if (!track) {
341 /* Ok, continue parsing the next atom */
342 ret = 0;
343 goto fail;
344 }
345 fieldlength = avio_rb32(f);
346 track->chunks = avio_rb32(f);
347 track->offsets = av_mallocz_array(track->chunks, sizeof(*track->offsets));
348 if (!track->offsets) {
349 track->chunks = 0;
350 ret = AVERROR(ENOMEM);
351 goto fail;
352 }
353 // The duration here is always the difference between consecutive
354 // start times.
355 for (i = 0; i < track->chunks; i++) {
356 if (version == 1) {
357 track->offsets[i].time = avio_rb64(f);
358 track->offsets[i].offset = avio_rb64(f);
359 } else {
360 track->offsets[i].time = avio_rb32(f);
361 track->offsets[i].offset = avio_rb32(f);
362 }
363 for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
364 avio_r8(f);
365 for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
366 avio_r8(f);
367 for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
368 avio_r8(f);
369 if (i > 0)
370 track->offsets[i - 1].duration = track->offsets[i].time -
371 track->offsets[i - 1].time;
372 }
373 if (track->chunks > 0) {
374 track->offsets[track->chunks - 1].duration = track->offsets[0].time +
375 track->duration -
376 track->offsets[track->chunks - 1].time;
377 }
378 // Now try to read the actual durations from the trun sample data.
379 for (i = 0; i < track->chunks; i++) {
380 int64_t duration = read_moof_duration(f, track->offsets[i].offset);
381 if (duration > 0 && llabs(duration - track->offsets[i].duration) > 3) {
382 // 3 allows for integer duration to drift a few units,
383 // e.g., for 1/3 durations
384 track->offsets[i].duration = duration;
385 }
386 }
387 if (track->chunks > 0) {
388 if (track->offsets[track->chunks - 1].duration <= 0) {
389 fprintf(stderr, "Calculated last chunk duration for track %d "
390 "was non-positive (%"PRId64"), probably due to missing "
391 "fragments ", track->track_id,
392 track->offsets[track->chunks - 1].duration);
393 if (track->chunks > 1) {
394 track->offsets[track->chunks - 1].duration =
395 track->offsets[track->chunks - 2].duration;
396 } else {
397 track->offsets[track->chunks - 1].duration = 1;
398 }
399 fprintf(stderr, "corrected to %"PRId64"\n",
400 track->offsets[track->chunks - 1].duration);
401 track->duration = track->offsets[track->chunks - 1].time +
402 track->offsets[track->chunks - 1].duration -
403 track->offsets[0].time;
404 fprintf(stderr, "Track duration corrected to %"PRId64"\n",
405 track->duration);
406 }
407 }
408 ret = 0;
409
410fail:
411 avio_seek(f, pos + size, SEEK_SET);
412 return ret;
413}
414
415static int read_mfra(struct Tracks *tracks, int start_index,
416 const char *file, int split, int ismf,
417 const char *basename, const char* output_prefix)
418{
419 int err = 0;
420 const char* err_str = "";
421 AVIOContext *f = NULL;
422 int32_t mfra_size;
423
424 if ((err = avio_open2(&f, file, AVIO_FLAG_READ, NULL, NULL)) < 0)
425 goto fail;
426 avio_seek(f, avio_size(f) - 4, SEEK_SET);
427 mfra_size = avio_rb32(f);
428 avio_seek(f, -mfra_size, SEEK_CUR);
429 if (avio_rb32(f) != mfra_size) {
430 err = AVERROR_INVALIDDATA;
431 err_str = "mfra size mismatch";
432 goto fail;
433 }
434 if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
435 err = AVERROR_INVALIDDATA;
436 err_str = "mfra tag mismatch";
437 goto fail;
438 }
439 while (!read_tfra(tracks, start_index, f)) {
440 /* Empty */
441 }
442
443 if (split || ismf)
444 err = write_fragments(tracks, start_index, f, basename, split, ismf,
445 output_prefix);
446 err_str = "error in write_fragments";
447
448fail:
449 if (f)
450 avio_close(f);
451 if (err)
452 fprintf(stderr, "Unable to read the MFRA atom in %s (%s)\n", file, err_str);
453 return err;
454}
455
456static int get_private_data(struct Track *track, AVCodecParameters *codecpar)
457{
458 track->codec_private_size = 0;
459 track->codec_private = av_mallocz(codecpar->extradata_size);
460 if (!track->codec_private)
461 return AVERROR(ENOMEM);
462 track->codec_private_size = codecpar->extradata_size;
463 memcpy(track->codec_private, codecpar->extradata, codecpar->extradata_size);
464 return 0;
465}
466
467static int get_video_private_data(struct Track *track, AVCodecParameters *codecpar)
468{
469 AVIOContext *io = NULL;
470 uint16_t sps_size, pps_size;
471 int err;
472
473 if (codecpar->codec_id == AV_CODEC_ID_VC1)
474 return get_private_data(track, codecpar);
475
476 if ((err = avio_open_dyn_buf(&io)) < 0)
477 goto fail;
478 err = AVERROR(EINVAL);
479 if (codecpar->extradata_size < 11 || codecpar->extradata[0] != 1)
480 goto fail;
481 sps_size = AV_RB16(&codecpar->extradata[6]);
482 if (11 + sps_size > codecpar->extradata_size)
483 goto fail;
484 avio_wb32(io, 0x00000001);
485 avio_write(io, &codecpar->extradata[8], sps_size);
486 pps_size = AV_RB16(&codecpar->extradata[9 + sps_size]);
487 if (11 + sps_size + pps_size > codecpar->extradata_size)
488 goto fail;
489 avio_wb32(io, 0x00000001);
490 avio_write(io, &codecpar->extradata[11 + sps_size], pps_size);
491 err = 0;
492
493fail:
494 track->codec_private_size = avio_close_dyn_buf(io, &track->codec_private);
495 return err;
496}
497
498static int handle_file(struct Tracks *tracks, const char *file, int split,
499 int ismf, const char *basename,
500 const char* output_prefix)
501{
502 AVFormatContext *ctx = NULL;
503 int err = 0, i, orig_tracks = tracks->nb_tracks;
504 char errbuf[50], *ptr;
505 struct Track *track;
506
507 err = avformat_open_input(&ctx, file, NULL, NULL);
508 if (err < 0) {
509 av_strerror(err, errbuf, sizeof(errbuf));
510 fprintf(stderr, "Unable to open %s: %s\n", file, errbuf);
511 return 1;
512 }
513
514 err = avformat_find_stream_info(ctx, NULL);
515 if (err < 0) {
516 av_strerror(err, errbuf, sizeof(errbuf));
517 fprintf(stderr, "Unable to identify %s: %s\n", file, errbuf);
518 goto fail;
519 }
520
521 if (ctx->nb_streams < 1) {
522 fprintf(stderr, "No streams found in %s\n", file);
523 goto fail;
524 }
525
526 for (i = 0; i < ctx->nb_streams; i++) {
527 struct Track **temp;
528 AVStream *st = ctx->streams[i];
529
530 if (st->codecpar->bit_rate == 0) {
531 fprintf(stderr, "Skipping track %d in %s as it has zero bitrate\n",
532 st->id, file);
533 continue;
534 }
535
536 track = av_mallocz(sizeof(*track));
537 if (!track) {
538 err = AVERROR(ENOMEM);
539 goto fail;
540 }
541 temp = av_realloc_array(tracks->tracks,
542 tracks->nb_tracks + 1,
543 sizeof(*tracks->tracks));
544 if (!temp) {
545 av_free(track);
546 err = AVERROR(ENOMEM);
547 goto fail;
548 }
549 tracks->tracks = temp;
550 tracks->tracks[tracks->nb_tracks] = track;
551
552 track->name = file;
553 if ((ptr = strrchr(file, '/')))
554 track->name = ptr + 1;
555
556 track->bitrate = st->codecpar->bit_rate;
557 track->track_id = st->id;
558 track->timescale = st->time_base.den;
559 track->duration = st->duration;
560 track->is_audio = st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO;
561 track->is_video = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
562
563 if (!track->is_audio && !track->is_video) {
564 fprintf(stderr,
565 "Track %d in %s is neither video nor audio, skipping\n",
566 track->track_id, file);
567 av_freep(&tracks->tracks[tracks->nb_tracks]);
568 continue;
569 }
570
571 tracks->duration = FFMAX(tracks->duration,
572 av_rescale_rnd(track->duration, AV_TIME_BASE,
573 track->timescale, AV_ROUND_UP));
574
575 if (track->is_audio) {
576 if (tracks->audio_track < 0)
577 tracks->audio_track = tracks->nb_tracks;
578 tracks->nb_audio_tracks++;
579 track->channels = st->codecpar->channels;
580 track->sample_rate = st->codecpar->sample_rate;
581 if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
582 track->fourcc = "AACL";
583 track->tag = 255;
584 track->blocksize = 4;
585 } else if (st->codecpar->codec_id == AV_CODEC_ID_WMAPRO) {
586 track->fourcc = "WMAP";
587 track->tag = st->codecpar->codec_tag;
588 track->blocksize = st->codecpar->block_align;
589 }
590 get_private_data(track, st->codecpar);
591 }
592 if (track->is_video) {
593 if (tracks->video_track < 0)
594 tracks->video_track = tracks->nb_tracks;
595 tracks->nb_video_tracks++;
596 track->width = st->codecpar->width;
597 track->height = st->codecpar->height;
598 if (st->codecpar->codec_id == AV_CODEC_ID_H264)
599 track->fourcc = "H264";
600 else if (st->codecpar->codec_id == AV_CODEC_ID_VC1)
601 track->fourcc = "WVC1";
602 get_video_private_data(track, st->codecpar);
603 }
604
605 tracks->nb_tracks++;
606 }
607
608 avformat_close_input(&ctx);
609
610 err = read_mfra(tracks, orig_tracks, file, split, ismf, basename,
611 output_prefix);
612
613fail:
614 if (ctx)
615 avformat_close_input(&ctx);
616 return err;
617}
618
619static void output_server_manifest(struct Tracks *tracks, const char *basename,
620 const char *output_prefix,
621 const char *path_prefix,
622 const char *ismc_prefix)
623{
624 char filename[1000];
625 FILE *out;
626 int i;
627
628 snprintf(filename, sizeof(filename), "%s%s.ism", output_prefix, basename);
629 out = fopen(filename, "w");
630 if (!out) {
631 perror(filename);
632 return;
633 }
634 fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
635 fprintf(out, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
636 fprintf(out, "\t<head>\n");
637 fprintf(out, "\t\t<meta name=\"clientManifestRelativePath\" "
638 "content=\"%s%s.ismc\" />\n", ismc_prefix, basename);
639 fprintf(out, "\t</head>\n");
640 fprintf(out, "\t<body>\n");
641 fprintf(out, "\t\t<switch>\n");
642 for (i = 0; i < tracks->nb_tracks; i++) {
643 struct Track *track = tracks->tracks[i];
644 const char *type = track->is_video ? "video" : "audio";
645 fprintf(out, "\t\t\t<%s src=\"%s%s\" systemBitrate=\"%d\">\n",
646 type, path_prefix, track->name, track->bitrate);
647 fprintf(out, "\t\t\t\t<param name=\"trackID\" value=\"%d\" "
648 "valueType=\"data\" />\n", track->track_id);
649 fprintf(out, "\t\t\t</%s>\n", type);
650 }
651 fprintf(out, "\t\t</switch>\n");
652 fprintf(out, "\t</body>\n");
653 fprintf(out, "</smil>\n");
654 fclose(out);
655}
656
657static void print_track_chunks(FILE *out, struct Tracks *tracks, int main,
658 const char *type)
659{
660 int i, j;
661 int64_t pos = 0;
662 struct Track *track = tracks->tracks[main];
663 int should_print_time_mismatch = 1;
664
665 for (i = 0; i < track->chunks; i++) {
666 for (j = main + 1; j < tracks->nb_tracks; j++) {
667 if (tracks->tracks[j]->is_audio == track->is_audio) {
668 if (track->offsets[i].duration != tracks->tracks[j]->offsets[i].duration) {
669 fprintf(stderr, "Mismatched duration 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 = 1;
672 }
673 if (track->offsets[i].time != tracks->tracks[j]->offsets[i].time) {
674 if (should_print_time_mismatch)
675 fprintf(stderr, "Mismatched (start) time of %s chunk %d in %s (%d) and %s (%d)\n",
676 type, i, track->name, main, tracks->tracks[j]->name, j);
677 should_print_time_mismatch = 0;
678 }
679 }
680 }
681 fprintf(out, "\t\t<c n=\"%d\" d=\"%"PRId64"\" ",
682 i, track->offsets[i].duration);
683 if (pos != track->offsets[i].time) {
684 fprintf(out, "t=\"%"PRId64"\" ", track->offsets[i].time);
685 pos = track->offsets[i].time;
686 }
687 pos += track->offsets[i].duration;
688 fprintf(out, "/>\n");
689 }
690}
691
692static void output_client_manifest(struct Tracks *tracks, const char *basename,
693 const char *output_prefix, int split)
694{
695 char filename[1000];
696 FILE *out;
697 int i, j;
698
699 if (split)
700 snprintf(filename, sizeof(filename), "%sManifest", output_prefix);
701 else
702 snprintf(filename, sizeof(filename), "%s%s.ismc", output_prefix, basename);
703 out = fopen(filename, "w");
704 if (!out) {
705 perror(filename);
706 return;
707 }
708 fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
709 fprintf(out, "<SmoothStreamingMedia MajorVersion=\"2\" MinorVersion=\"0\" "
710 "Duration=\"%"PRId64 "\">\n", tracks->duration * 10);
711 if (tracks->video_track >= 0) {
712 struct Track *track = tracks->tracks[tracks->video_track];
713 struct Track *first_track = track;
714 int index = 0;
715 fprintf(out,
716 "\t<StreamIndex Type=\"video\" QualityLevels=\"%d\" "
717 "Chunks=\"%d\" "
718 "Url=\"QualityLevels({bitrate})/Fragments(video={start time})\">\n",
719 tracks->nb_video_tracks, track->chunks);
720 for (i = 0; i < tracks->nb_tracks; i++) {
721 track = tracks->tracks[i];
722 if (!track->is_video)
723 continue;
724 fprintf(out,
725 "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" "
726 "FourCC=\"%s\" MaxWidth=\"%d\" MaxHeight=\"%d\" "
727 "CodecPrivateData=\"",
728 index, track->bitrate, track->fourcc, track->width, track->height);
729 for (j = 0; j < track->codec_private_size; j++)
730 fprintf(out, "%02X", track->codec_private[j]);
731 fprintf(out, "\" />\n");
732 index++;
733 if (track->chunks != first_track->chunks)
734 fprintf(stderr, "Mismatched number of video chunks in %s (id: %d, chunks %d) and %s (id: %d, chunks %d)\n",
735 track->name, track->track_id, track->chunks, first_track->name, first_track->track_id, first_track->chunks);
736 }
737 print_track_chunks(out, tracks, tracks->video_track, "video");
738 fprintf(out, "\t</StreamIndex>\n");
739 }
740 if (tracks->audio_track >= 0) {
741 struct Track *track = tracks->tracks[tracks->audio_track];
742 struct Track *first_track = track;
743 int index = 0;
744 fprintf(out,
745 "\t<StreamIndex Type=\"audio\" QualityLevels=\"%d\" "
746 "Chunks=\"%d\" "
747 "Url=\"QualityLevels({bitrate})/Fragments(audio={start time})\">\n",
748 tracks->nb_audio_tracks, track->chunks);
749 for (i = 0; i < tracks->nb_tracks; i++) {
750 track = tracks->tracks[i];
751 if (!track->is_audio)
752 continue;
753 fprintf(out,
754 "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" "
755 "FourCC=\"%s\" SamplingRate=\"%d\" Channels=\"%d\" "
756 "BitsPerSample=\"16\" PacketSize=\"%d\" "
757 "AudioTag=\"%d\" CodecPrivateData=\"",
758 index, track->bitrate, track->fourcc, track->sample_rate,
759 track->channels, track->blocksize, track->tag);
760 for (j = 0; j < track->codec_private_size; j++)
761 fprintf(out, "%02X", track->codec_private[j]);
762 fprintf(out, "\" />\n");
763 index++;
764 if (track->chunks != first_track->chunks)
765 fprintf(stderr, "Mismatched number of audio chunks in %s and %s\n",
766 track->name, first_track->name);
767 }
768 print_track_chunks(out, tracks, tracks->audio_track, "audio");
769 fprintf(out, "\t</StreamIndex>\n");
770 }
771 fprintf(out, "</SmoothStreamingMedia>\n");
772 fclose(out);
773}
774
775static void clean_tracks(struct Tracks *tracks)
776{
777 int i;
778 for (i = 0; i < tracks->nb_tracks; i++) {
779 av_freep(&tracks->tracks[i]->codec_private);
780 av_freep(&tracks->tracks[i]->offsets);
781 av_freep(&tracks->tracks[i]);
782 }
783 av_freep(&tracks->tracks);
784 tracks->nb_tracks = 0;
785}
786
787int main(int argc, char **argv)
788{
789 const char *basename = NULL;
790 const char *path_prefix = "", *ismc_prefix = "";
791 const char *output_prefix = "";
792 char output_prefix_buf[2048];
793 int split = 0, ismf = 0, i;
794 struct Tracks tracks = { 0, .video_track = -1, .audio_track = -1 };
795
796 av_register_all();
797
798 for (i = 1; i < argc; i++) {
799 if (!strcmp(argv[i], "-n")) {
800 basename = argv[i + 1];
801 i++;
802 } else if (!strcmp(argv[i], "-path-prefix")) {
803 path_prefix = argv[i + 1];
804 i++;
805 } else if (!strcmp(argv[i], "-ismc-prefix")) {
806 ismc_prefix = argv[i + 1];
807 i++;
808 } else if (!strcmp(argv[i], "-output")) {
809 output_prefix = argv[i + 1];
810 i++;
811 if (output_prefix[strlen(output_prefix) - 1] != '/') {
812 snprintf(output_prefix_buf, sizeof(output_prefix_buf),
813 "%s/", output_prefix);
814 output_prefix = output_prefix_buf;
815 }
816 } else if (!strcmp(argv[i], "-split")) {
817 split = 1;
818 } else if (!strcmp(argv[i], "-ismf")) {
819 ismf = 1;
820 } else if (argv[i][0] == '-') {
821 return usage(argv[0], 1);
822 } else {
823 if (!basename)
824 ismf = 0;
825 if (handle_file(&tracks, argv[i], split, ismf,
826 basename, output_prefix))
827 return 1;
828 }
829 }
830 if (!tracks.nb_tracks || (!basename && !split))
831 return usage(argv[0], 1);
832
833 if (!split)
834 output_server_manifest(&tracks, basename, output_prefix,
835 path_prefix, ismc_prefix);
836 output_client_manifest(&tracks, basename, output_prefix, split);
837
838 clean_tracks(&tracks);
839
840 return 0;
841}
842
generated by cgit at 2024-05-17 02:03:05 (GMT)