FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/tests/movenc.c
Date: 2026-04-23 02:20:26
Exec Total Coverage
Lines: 510 544 93.8%
Functions: 17 18 94.4%
Branches: 71 94 75.5%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2015 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 #include "config.h"
22
23 #include "libavutil/intreadwrite.h"
24 #include "libavutil/mathematics.h"
25 #include "libavutil/md5.h"
26 #include "libavutil/mem.h"
27
28 #include "libavformat/avformat.h"
29
30 #if HAVE_UNISTD_H
31 #include <unistd.h>
32 #endif
33
34 #if !HAVE_GETOPT
35 #include "compat/getopt.c"
36 #endif
37
38 #define HASH_SIZE 16
39
40 static const uint8_t h264_extradata[] = {
41 0x01, 0x4d, 0x40, 0x1e, 0xff, 0xe1, 0x00, 0x02, 0x67, 0x4d, 0x01, 0x00, 0x02, 0x68, 0xef
42 };
43 static const uint8_t aac_extradata[] = {
44 0x12, 0x10
45 };
46
47
48 static const char *format = "mp4";
49 static AVFormatContext *ctx;
50 static uint8_t iobuf[32768];
51 static AVDictionary *opts;
52
53 static int write_file;
54 static const char *cur_name;
55 static FILE* out;
56 static int out_size;
57 static struct AVMD5* md5;
58 static uint8_t hash[HASH_SIZE];
59
60 static AVPacket *pkt;
61 static AVStream *video_st, *audio_st, *id3_st;
62 static int64_t audio_dts, video_dts;
63
64 static int bframes;
65 static int64_t duration;
66 static int64_t audio_duration;
67 static int frames;
68 static int gop_size;
69 static int64_t next_p_pts;
70 static enum AVPictureType last_picture;
71 static int skip_write;
72 static int skip_write_audio;
73 static int clear_duration;
74 static int force_iobuf_size;
75 static int do_interleave;
76 static int fake_pkt_duration;
77
78 static int num_warnings;
79
80 static int check_faults;
81
82
83 6 static void count_warnings(void *avcl, int level, const char *fmt, va_list vl)
84 {
85
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 6 if (level == AV_LOG_WARNING)
86 3 num_warnings++;
87 6 }
88
89 3 static void init_count_warnings(void)
90 {
91 3 av_log_set_callback(count_warnings);
92 3 num_warnings = 0;
93 3 }
94
95 3 static void reset_count_warnings(void)
96 {
97 3 av_log_set_callback(av_log_default_callback);
98 3 }
99
100 126 static int io_write(void *opaque, const uint8_t *buf, int size)
101 {
102 126 out_size += size;
103 126 av_md5_update(md5, buf, size);
104
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 126 if (out)
105 ✗ fwrite(buf, 1, size, out);
106 126 return size;
107 }
108
109 126 static int io_write_data_type(void *opaque, const uint8_t *buf, int size,
110 enum AVIODataMarkerType type, int64_t time)
111 {
112 126 char timebuf[30], content[5] = { 0 };
113 const char *str;
114
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 126 switch (type) {
115 40 case AVIO_DATA_MARKER_HEADER: str = "header"; break;
116 47 case AVIO_DATA_MARKER_SYNC_POINT: str = "sync"; break;
117 5 case AVIO_DATA_MARKER_BOUNDARY_POINT: str = "boundary"; break;
118 6 case AVIO_DATA_MARKER_UNKNOWN: str = "unknown"; break;
119 28 case AVIO_DATA_MARKER_TRAILER: str = "trailer"; break;
120 ✗ default: str = "unknown"; break;
121 }
122
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 126 if (time == AV_NOPTS_VALUE)
123 74 snprintf(timebuf, sizeof(timebuf), "nopts");
124 else
125 52 snprintf(timebuf, sizeof(timebuf), "%"PRId64, time);
126 // There can be multiple header/trailer callbacks, only log the box type
127 // for header at out_size == 0
128
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 126 if (type != AVIO_DATA_MARKER_UNKNOWN &&
129
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 92 type != AVIO_DATA_MARKER_TRAILER &&
130
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 92 (type != AVIO_DATA_MARKER_HEADER || out_size == 0) &&
131 size >= 8)
132 77 memcpy(content, &buf[4], 4);
133 else
134 49 snprintf(content, sizeof(content), "-");
135 126 printf("write_data len %d, time %s, type %s atom %s\n", size, timebuf, str, content);
136 126 return io_write(opaque, buf, size);
137 }
138
139 35 static void init_out(const char *name)
140 {
141 char buf[100];
142 35 cur_name = name;
143 35 snprintf(buf, sizeof(buf), "%s.%s", cur_name, format);
144
145 35 av_md5_init(md5);
146
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 35 if (write_file) {
147 ✗ out = fopen(buf, "wb");
148 ✗ if (!out)
149 ✗ perror(buf);
150 }
151 35 out_size = 0;
152 35 }
153
154 35 static void close_out(void)
155 {
156 int i;
157 35 av_md5_final(md5, hash);
158
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 595 for (i = 0; i < HASH_SIZE; i++)
159 560 printf("%02x", hash[i]);
160 35 printf(" %d %s\n", out_size, cur_name);
161
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 35 if (out)
162 ✗ fclose(out);
163 35 out = NULL;
164 35 }
165
166 20 static void check_func(int value, int line, const char *msg, ...)
167 {
168
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 20 if (!value) {
169 va_list ap;
170 ✗ va_start(ap, msg);
171 ✗ printf("%d: ", line);
172 ✗ vprintf(msg, ap);
173 ✗ printf("\n");
174 ✗ check_faults++;
175 ✗ va_end(ap);
176 }
177 20 }
178 #define check(value, ...) check_func(value, __LINE__, __VA_ARGS__)
179
180 28 static void init_fps(int bf, int audio_preroll, int fps, int id3)
181 {
182 AVStream *st;
183
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 28 int iobuf_size = force_iobuf_size ? force_iobuf_size : sizeof(iobuf);
184 28 ctx = avformat_alloc_context();
185
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 28 if (!ctx)
186 ✗ exit(1);
187 28 ctx->oformat = av_guess_format(format, NULL, NULL);
188
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 28 if (!ctx->oformat)
189 ✗ exit(1);
190 28 ctx->pb = avio_alloc_context(iobuf, iobuf_size, 1, NULL, NULL, io_write, NULL);
191
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 28 if (!ctx->pb)
192 ✗ exit(1);
193 28 ctx->pb->write_data_type = io_write_data_type;
194 28 ctx->flags |= AVFMT_FLAG_BITEXACT;
195
196 28 st = avformat_new_stream(ctx, NULL);
197
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 28 if (!st)
198 ✗ exit(1);
199 28 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
200 28 st->codecpar->codec_id = AV_CODEC_ID_H264;
201 28 st->codecpar->width = 640;
202 28 st->codecpar->height = 480;
203 28 st->time_base.num = 1;
204 28 st->time_base.den = 30;
205 28 st->codecpar->extradata_size = sizeof(h264_extradata);
206 28 st->codecpar->extradata = av_mallocz(st->codecpar->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
207
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 28 if (!st->codecpar->extradata)
208 ✗ exit(1);
209 28 memcpy(st->codecpar->extradata, h264_extradata, sizeof(h264_extradata));
210 28 video_st = st;
211
212 28 st = avformat_new_stream(ctx, NULL);
213
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 28 if (!st)
214 ✗ exit(1);
215 28 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
216 28 st->codecpar->codec_id = AV_CODEC_ID_AAC;
217 28 st->codecpar->sample_rate = 44100;
218 28 st->codecpar->frame_size = 1024;
219 28 st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
220 28 st->time_base.num = 1;
221 28 st->time_base.den = 44100;
222 28 st->codecpar->extradata_size = sizeof(aac_extradata);
223 28 st->codecpar->extradata = av_mallocz(st->codecpar->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
224
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 28 if (!st->codecpar->extradata)
225 ✗ exit(1);
226 28 memcpy(st->codecpar->extradata, aac_extradata, sizeof(aac_extradata));
227 28 audio_st = st;
228
229
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 28 if (id3) {
230 1 st = avformat_new_stream(ctx, NULL);
231
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 1 if (!st)
232 ✗ exit(1);
233 1 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
234 1 st->codecpar->codec_id = AV_CODEC_ID_TIMED_ID3;
235 1 st->time_base.num = 1;
236 1 st->time_base.den = 1000;
237 1 id3_st = st;
238 }
239
240
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 28 if (avformat_write_header(ctx, &opts) < 0)
241 ✗ exit(1);
242 28 av_dict_free(&opts);
243
244 28 frames = 0;
245 28 gop_size = 30;
246 28 duration = video_st->time_base.den / fps;
247 28 audio_duration = (long long)audio_st->codecpar->frame_size *
248 28 audio_st->time_base.den / audio_st->codecpar->sample_rate;
249
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 28 if (audio_preroll)
250 11 audio_preroll = 2 * audio_duration;
251
252 28 bframes = bf;
253
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 28 video_dts = bframes ? -duration : 0;
254 28 audio_dts = -audio_preroll;
255 28 }
256
257 23 static void init(int bf, int audio_preroll)
258 {
259 23 init_fps(bf, audio_preroll, 30, 0);
260 23 }
261
262 46 static void mux_frames(int n, int c)
263 {
264 46 int end_frames = frames + n;
265 5398 while (1) {
266 5444 uint8_t pktdata[8] = { 0 };
267 5444 av_packet_unref(pkt);
268
269
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 5444 if (av_compare_ts(audio_dts, audio_st->time_base, video_dts, video_st->time_base) < 0) {
270 3658 pkt->dts = pkt->pts = audio_dts;
271 3658 pkt->stream_index = 1;
272 3658 pkt->duration = audio_duration;
273 3658 pkt->flags |= AV_PKT_FLAG_KEY;
274 3658 audio_dts += audio_duration;
275 } else {
276
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 1786 if (frames == end_frames)
277 46 break;
278 1740 pkt->dts = video_dts;
279 1740 pkt->stream_index = 0;
280 1740 pkt->duration = duration;
281
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 1740 if ((frames % gop_size) == 0) {
282 58 pkt->flags |= AV_PKT_FLAG_KEY;
283 58 last_picture = AV_PICTURE_TYPE_I;
284 58 pkt->pts = pkt->dts + duration;
285 58 video_dts = pkt->pts;
286 } else {
287
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 1682 if (last_picture == AV_PICTURE_TYPE_P) {
288 812 last_picture = AV_PICTURE_TYPE_B;
289 812 pkt->pts = pkt->dts;
290 812 video_dts = next_p_pts;
291 } else {
292 870 last_picture = AV_PICTURE_TYPE_P;
293
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 870 if (((frames + 1) % gop_size) == 0) {
294 58 pkt->pts = pkt->dts + duration;
295 58 video_dts = pkt->pts;
296 } else {
297 812 next_p_pts = pkt->pts = pkt->dts + 2 * duration;
298 812 video_dts += duration;
299 }
300 }
301 }
302
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 1740 if (!bframes)
303 600 pkt->pts = pkt->dts;
304
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 1740 if (fake_pkt_duration)
305 1 pkt->duration = fake_pkt_duration;
306 1740 frames++;
307 }
308
309
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 5398 if (clear_duration)
310 328 pkt->duration = 0;
311 5398 AV_WB32(pktdata + 4, pkt->pts);
312 5398 pkt->data = pktdata;
313 5398 pkt->size = 8;
314
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 5398 if (skip_write)
315 542 continue;
316
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 5030 if (skip_write_audio && pkt->stream_index == 1)
317 174 continue;
318
319
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 4856 if (c) {
320 73 pkt->pts += (1LL<<32);
321 73 pkt->dts += (1LL<<32);
322 }
323
324
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 4856 if (do_interleave)
325 173 av_interleaved_write_frame(ctx, pkt);
326 else
327 4683 av_write_frame(ctx, pkt);
328 }
329 46 }
330
331 2 static void mux_id3(void)
332 {
333 2 uint8_t pktdata[8] = { 0 };
334 2 av_packet_unref(pkt);
335
336 2 pkt->dts = pkt->pts = av_rescale_q(video_dts + (bframes ? duration : 0),
337
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 2 video_st->time_base, id3_st->time_base);
338 2 pkt->stream_index = id3_st->index;
339 2 pkt->duration = 0;
340
341 2 AV_WB32(pktdata + 4, pkt->pts);
342 2 pkt->data = pktdata;
343 2 pkt->size = 8;
344
345 2 av_write_frame(ctx, pkt);
346 2 }
347
348 38 static void mux_gops(int n)
349 {
350 38 mux_frames(gop_size * n, 0);
351 38 }
352
353 5 static void skip_gops(int n)
354 {
355 5 skip_write = 1;
356 5 mux_gops(n);
357 5 skip_write = 0;
358 5 }
359
360 2 static void signal_init_ts(void)
361 {
362 2 av_packet_unref(pkt);
363
364 2 pkt->stream_index = 0;
365 2 pkt->dts = video_dts;
366 2 pkt->pts = 0;
367 2 av_write_frame(ctx, pkt);
368
369 2 pkt->stream_index = 1;
370 2 pkt->dts = pkt->pts = audio_dts;
371 2 av_write_frame(ctx, pkt);
372 2 }
373
374 28 static void finish(void)
375 {
376 28 av_write_trailer(ctx);
377 28 avio_context_free(&ctx->pb);
378 28 avformat_free_context(ctx);
379 28 ctx = NULL;
380 28 }
381
382 ✗ static void help(void)
383 {
384 ✗ printf("movenc-test [-w]\n"
385 "-w write output into files\n");
386 ✗ }
387
388 1 int main(int argc, char **argv)
389 {
390 int c;
391 uint8_t header[HASH_SIZE];
392 uint8_t content[HASH_SIZE];
393 int empty_moov_pos;
394 int prev_pos;
395
396 for (;;) {
397 1 c = getopt(argc, argv, "wh");
398
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 1 if (c == -1)
399 1 break;
400 ✗ switch (c) {
401 ✗ case 'w':
402 ✗ write_file = 1;
403 ✗ break;
404 ✗ default:
405 case 'h':
406 ✗ help();
407 ✗ return 0;
408 }
409 }
410
411 1 md5 = av_md5_alloc();
412
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 1 if (!md5)
413 ✗ return 1;
414 1 pkt = av_packet_alloc();
415
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 1 if (!pkt) {
416 ✗ av_free(md5);
417 ✗ return 1;
418 }
419
420 // Write a fragmented file with an initial moov that actually contains some
421 // samples. One moov+mdat with 1 second of data and one moof+mdat with 1
422 // second of data.
423 1 init_out("non-empty-moov");
424 1 av_dict_set(&opts, "movflags", "+frag_keyframe", 0);
425 1 init(0, 0);
426 1 mux_gops(2);
427 1 finish();
428 1 close_out();
429
430 // Write a similar file, but with B-frames and audio preroll, handled
431 // via an edit list.
432 1 init_out("non-empty-moov-elst");
433 1 av_dict_set(&opts, "movflags", "+frag_keyframe", 0);
434 1 av_dict_set(&opts, "use_editlist", "1", 0);
435 1 init(1, 1);
436 1 mux_gops(2);
437 1 finish();
438 1 close_out();
439
440 // Use B-frames but no audio-preroll, but without an edit list.
441 // Due to avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO, the dts
442 // of the first audio packet is > 0, but it is set to zero since edit
443 // lists aren't used, increasing the duration of the first packet instead.
444 1 init_out("non-empty-moov-no-elst");
445 1 av_dict_set(&opts, "movflags", "+frag_keyframe", 0);
446 1 av_dict_set(&opts, "use_editlist", "0", 0);
447 1 init(1, 0);
448 1 mux_gops(2);
449 1 finish();
450 1 close_out();
451
452 1 format = "ismv";
453 // Write an ISMV, with B-frames and audio preroll.
454 1 init_out("ismv");
455 1 av_dict_set(&opts, "movflags", "+frag_keyframe", 0);
456 1 init(1, 1);
457 1 mux_gops(2);
458 1 finish();
459 1 close_out();
460 1 format = "mp4";
461
462 // An initial moov that doesn't contain any samples, followed by two
463 // moof+mdat pairs.
464 1 init_out("empty-moov");
465 1 av_dict_set(&opts, "movflags", "+frag_keyframe+empty_moov", 0);
466 1 av_dict_set(&opts, "use_editlist", "0", 0);
467 1 init(0, 0);
468 1 mux_gops(2);
469 1 finish();
470 1 close_out();
471 1 memcpy(content, hash, HASH_SIZE);
472
473 // Similar to the previous one, but with input that doesn't start at
474 // pts/dts 0. avoid_negative_ts behaves in the same way as
475 // in non-empty-moov-no-elst above.
476 1 init_count_warnings();
477 1 init_out("empty-moov-no-elst");
478 1 av_dict_set(&opts, "movflags", "+frag_keyframe+empty_moov", 0);
479 1 init(1, 0);
480 1 mux_gops(2);
481 1 finish();
482 1 close_out();
483
484 1 reset_count_warnings();
485 1 check(num_warnings == 0, "Unexpected warnings printed");
486
487 // Same as the previous one, but disable avoid_negative_ts (which
488 // would require using an edit list, but with empty_moov, one can't
489 // write a sensible edit list, when the start timestamps aren't known).
490 // This should trigger a warning - we check that the warning is produced.
491 1 init_count_warnings();
492 1 init_out("empty-moov-no-elst-no-adjust");
493 1 av_dict_set(&opts, "movflags", "+frag_keyframe+empty_moov", 0);
494 1 av_dict_set(&opts, "avoid_negative_ts", "disabled", 0);
495 1 init(1, 0);
496 1 mux_gops(2);
497 1 finish();
498 1 close_out();
499
500 1 reset_count_warnings();
501 1 check(num_warnings > 0, "No warnings printed for unhandled start offset");
502
503 // Verify that delay_moov produces the same as empty_moov for
504 // simple input
505 1 init_out("delay-moov");
506 1 av_dict_set(&opts, "movflags", "+frag_keyframe+delay_moov", 0);
507 1 av_dict_set(&opts, "use_editlist", "0", 0);
508 1 init(0, 0);
509 1 mux_gops(2);
510 1 finish();
511 1 close_out();
512 1 check(!memcmp(hash, content, HASH_SIZE), "delay_moov differs from empty_moov");
513
514 // Test writing content that requires an edit list using delay_moov
515 1 init_out("delay-moov-elst");
516 1 av_dict_set(&opts, "movflags", "+frag_keyframe+delay_moov", 0);
517 1 init(1, 1);
518 1 mux_gops(2);
519 1 finish();
520 1 close_out();
521
522 // Test writing a file with one track lacking packets, with delay_moov.
523 1 skip_write_audio = 1;
524 1 init_out("delay-moov-empty-track");
525 1 av_dict_set(&opts, "movflags", "+frag_keyframe+delay_moov", 0);
526 1 init(0, 0);
527 1 mux_gops(2);
528 // The automatic flushing shouldn't output anything, since we're still
529 // waiting for data for some tracks
530 1 check(out_size == 0, "delay_moov flushed prematurely");
531 // When closed (or manually flushed), all the written data should still
532 // be output.
533 1 finish();
534 1 close_out();
535 1 check(out_size > 0, "delay_moov didn't output anything");
536
537 // Check that manually flushing still outputs things as expected. This
538 // produces two fragments, while the one above produces only one.
539 1 init_out("delay-moov-empty-track-flush");
540 1 av_dict_set(&opts, "movflags", "+frag_custom+delay_moov", 0);
541 1 init(0, 0);
542 1 mux_gops(1);
543 1 av_write_frame(ctx, NULL); // Force writing the moov
544 1 check(out_size > 0, "No moov written");
545 1 av_write_frame(ctx, NULL);
546 1 mux_gops(1);
547 1 av_write_frame(ctx, NULL);
548 1 finish();
549 1 close_out();
550
551 1 skip_write_audio = 0;
552
553
554
555 // Verify that the header written by delay_moov when manually flushed
556 // is identical to the one by empty_moov.
557 1 init_out("empty-moov-header");
558 1 av_dict_set(&opts, "movflags", "+frag_keyframe+empty_moov", 0);
559 1 av_dict_set(&opts, "use_editlist", "0", 0);
560 1 init(0, 0);
561 1 close_out();
562 1 memcpy(header, hash, HASH_SIZE);
563 1 init_out("empty-moov-content");
564 1 mux_gops(2);
565 // Written 2 seconds of content, with an automatic flush after 1 second.
566 1 check(out_size > 0, "No automatic flush?");
567 1 empty_moov_pos = prev_pos = out_size;
568 // Manually flush the second fragment
569 1 av_write_frame(ctx, NULL);
570 1 check(out_size > prev_pos, "No second fragment flushed?");
571 1 prev_pos = out_size;
572 // Check that an extra flush doesn't output any more data
573 1 av_write_frame(ctx, NULL);
574 1 check(out_size == prev_pos, "More data written?");
575 1 close_out();
576 1 memcpy(content, hash, HASH_SIZE);
577 // Ignore the trailer written here
578 1 finish();
579
580 1 init_out("delay-moov-header");
581 1 av_dict_set(&opts, "movflags", "+frag_custom+delay_moov", 0);
582 1 av_dict_set(&opts, "use_editlist", "0", 0);
583 1 init(0, 0);
584 1 check(out_size == 0, "Output written during init with delay_moov");
585 1 mux_gops(1); // Write 1 second of content
586 1 av_write_frame(ctx, NULL); // Force writing the moov
587 1 close_out();
588 1 check(!memcmp(hash, header, HASH_SIZE), "delay_moov header differs from empty_moov");
589 1 init_out("delay-moov-content");
590 1 av_write_frame(ctx, NULL); // Flush the first fragment
591 1 check(out_size == empty_moov_pos, "Manually flushed content differs from automatically flushed, %d vs %d", out_size, empty_moov_pos);
592 1 mux_gops(1); // Write the rest of the content
593 1 av_write_frame(ctx, NULL); // Flush the second fragment
594 1 close_out();
595 1 check(!memcmp(hash, content, HASH_SIZE), "delay_moov content differs from empty_moov");
596 1 finish();
597
598
599 // Verify that we can produce an identical second fragment without
600 // writing the first one. First write the reference fragments that
601 // we want to reproduce.
602 1 av_dict_set(&opts, "movflags", "+frag_custom+empty_moov+dash", 0);
603 1 init(0, 0);
604 1 mux_gops(1);
605 1 av_write_frame(ctx, NULL); // Output the first fragment
606 1 init_out("empty-moov-second-frag");
607 1 mux_gops(1);
608 1 av_write_frame(ctx, NULL); // Output the second fragment
609 1 close_out();
610 1 memcpy(content, hash, HASH_SIZE);
611 1 finish();
612
613 // Produce the same second fragment without actually writing the first
614 // one before.
615 1 av_dict_set(&opts, "movflags", "+frag_custom+empty_moov+dash+frag_discont", 0);
616 1 av_dict_set(&opts, "fragment_index", "2", 0);
617 1 av_dict_set(&opts, "avoid_negative_ts", "disabled", 0);
618 1 av_dict_set(&opts, "use_editlist", "0", 0);
619 1 init(0, 0);
620 1 skip_gops(1);
621 1 init_out("empty-moov-second-frag-discont");
622 1 mux_gops(1);
623 1 av_write_frame(ctx, NULL); // Output the second fragment
624 1 close_out();
625 1 check(!memcmp(hash, content, HASH_SIZE), "discontinuously written fragment differs");
626 1 finish();
627
628 // Produce the same thing by using delay_moov, which requires a slightly
629 // different call sequence.
630 1 av_dict_set(&opts, "movflags", "+frag_custom+delay_moov+dash+frag_discont", 0);
631 1 av_dict_set(&opts, "fragment_index", "2", 0);
632 1 init(0, 0);
633 1 skip_gops(1);
634 1 mux_gops(1);
635 1 av_write_frame(ctx, NULL); // Output the moov
636 1 init_out("delay-moov-second-frag-discont");
637 1 av_write_frame(ctx, NULL); // Output the second fragment
638 1 close_out();
639 1 check(!memcmp(hash, content, HASH_SIZE), "discontinuously written fragment differs");
640 1 finish();
641
642
643 // Test discontinuously written fragments with B-frames (where the
644 // assumption of starting at pts=0 works) but not with audio preroll
645 // (which can't be guessed).
646 1 av_dict_set(&opts, "movflags", "+frag_custom+delay_moov+dash", 0);
647 1 init(1, 0);
648 1 mux_gops(1);
649 1 init_out("delay-moov-elst-init");
650 1 av_write_frame(ctx, NULL); // Output the moov
651 1 close_out();
652 1 memcpy(header, hash, HASH_SIZE);
653 1 av_write_frame(ctx, NULL); // Output the first fragment
654 1 init_out("delay-moov-elst-second-frag");
655 1 mux_gops(1);
656 1 av_write_frame(ctx, NULL); // Output the second fragment
657 1 close_out();
658 1 memcpy(content, hash, HASH_SIZE);
659 1 finish();
660
661 1 av_dict_set(&opts, "movflags", "+frag_custom+delay_moov+dash+frag_discont", 0);
662 1 av_dict_set(&opts, "fragment_index", "2", 0);
663 1 init(1, 0);
664 1 skip_gops(1);
665 1 mux_gops(1); // Write the second fragment
666 1 init_out("delay-moov-elst-init-discont");
667 1 av_write_frame(ctx, NULL); // Output the moov
668 1 close_out();
669 1 check(!memcmp(hash, header, HASH_SIZE), "discontinuously written header differs");
670 1 init_out("delay-moov-elst-second-frag-discont");
671 1 av_write_frame(ctx, NULL); // Output the second fragment
672 1 close_out();
673 1 check(!memcmp(hash, content, HASH_SIZE), "discontinuously written fragment differs");
674 1 finish();
675
676
677 // Test discontinuously written fragments with B-frames and audio preroll,
678 // properly signaled.
679 1 av_dict_set(&opts, "movflags", "+frag_custom+delay_moov+dash", 0);
680 1 init(1, 1);
681 1 mux_gops(1);
682 1 init_out("delay-moov-elst-signal-init");
683 1 av_write_frame(ctx, NULL); // Output the moov
684 1 close_out();
685 1 memcpy(header, hash, HASH_SIZE);
686 1 av_write_frame(ctx, NULL); // Output the first fragment
687 1 init_out("delay-moov-elst-signal-second-frag");
688 1 mux_gops(1);
689 1 av_write_frame(ctx, NULL); // Output the second fragment
690 1 close_out();
691 1 memcpy(content, hash, HASH_SIZE);
692 1 finish();
693
694 1 av_dict_set(&opts, "movflags", "+frag_custom+delay_moov+dash+frag_discont", 0);
695 1 av_dict_set(&opts, "fragment_index", "2", 0);
696 1 init(1, 1);
697 1 signal_init_ts();
698 1 skip_gops(1);
699 1 mux_gops(1); // Write the second fragment
700 1 init_out("delay-moov-elst-signal-init-discont");
701 1 av_write_frame(ctx, NULL); // Output the moov
702 1 close_out();
703 1 check(!memcmp(hash, header, HASH_SIZE), "discontinuously written header differs");
704 1 init_out("delay-moov-elst-signal-second-frag-discont");
705 1 av_write_frame(ctx, NULL); // Output the second fragment
706 1 close_out();
707 1 check(!memcmp(hash, content, HASH_SIZE), "discontinuously written fragment differs");
708 1 finish();
709
710
711 // Test muxing discontinuous fragments with very large (> (1<<31)) timestamps.
712 1 av_dict_set(&opts, "movflags", "+frag_custom+delay_moov+dash+frag_discont", 0);
713 1 av_dict_set(&opts, "fragment_index", "2", 0);
714 1 init(1, 1);
715 1 signal_init_ts();
716 1 skip_gops(1);
717 1 mux_frames(gop_size, 1); // Write the second fragment
718 1 init_out("delay-moov-elst-signal-init-discont-largets");
719 1 av_write_frame(ctx, NULL); // Output the moov
720 1 close_out();
721 1 init_out("delay-moov-elst-signal-second-frag-discont-largets");
722 1 av_write_frame(ctx, NULL); // Output the second fragment
723 1 close_out();
724 1 finish();
725
726 // Test VFR content, with sidx atoms (which declare the pts duration
727 // of a fragment, forcing overriding the start pts of the next one).
728 // Here, the fragment duration in pts is significantly different from
729 // the duration in dts. The video stream starts at dts=-10,pts=0, and
730 // the second fragment starts at dts=155,pts=156. The trun duration sum
731 // of the first fragment is 165, which also is written as
732 // baseMediaDecodeTime in the tfdt in the second fragment. The sidx for
733 // the first fragment says earliest_presentation_time = 0 and
734 // subsegment_duration = 156, which also matches the sidx in the second
735 // fragment. For the audio stream, the pts and dts durations also don't
736 // match - the input stream starts at pts=-2048, but that part is excluded
737 // by the edit list.
738 1 init_out("vfr");
739 1 av_dict_set(&opts, "movflags", "+frag_keyframe+delay_moov+dash", 0);
740 1 init_fps(1, 1, 3, 0);
741 1 mux_frames(gop_size/2, 0);
742 1 duration /= 10;
743 1 mux_frames(gop_size/2, 0);
744 1 mux_gops(1);
745 1 finish();
746 1 close_out();
747
748 // Test VFR content, with cleared duration fields. In these cases,
749 // the muxer must guess the duration of the last packet of each
750 // fragment. As long as the framerate doesn't vary (too much) at the
751 // fragment edge, it works just fine. Additionally, when automatically
752 // cutting fragments, the muxer already know the timestamps of the next
753 // packet for one stream (in most cases the video stream), avoiding
754 // having to use guesses for that one.
755 1 init_count_warnings();
756 1 clear_duration = 1;
757 1 init_out("vfr-noduration");
758 1 av_dict_set(&opts, "movflags", "+frag_keyframe+delay_moov+dash", 0);
759 1 init_fps(1, 1, 3, 0);
760 1 mux_frames(gop_size/2, 0);
761 1 duration /= 10;
762 1 mux_frames(gop_size/2, 0);
763 1 mux_gops(1);
764 1 finish();
765 1 close_out();
766 1 clear_duration = 0;
767 1 reset_count_warnings();
768 1 check(num_warnings > 0, "No warnings printed for filled in durations");
769
770 // Test with an IO buffer size that is too small to hold a full fragment;
771 // this will cause write_data_type to be called with the type unknown.
772 1 force_iobuf_size = 1500;
773 1 init_out("large_frag");
774 1 av_dict_set(&opts, "movflags", "+frag_keyframe+delay_moov", 0);
775 1 init_fps(1, 1, 3, 0);
776 1 mux_gops(2);
777 1 finish();
778 1 close_out();
779 1 force_iobuf_size = 0;
780
781 // Test VFR content with bframes with interleaving.
782 // Here, using av_interleaved_write_frame allows the muxer to get the
783 // fragment end durations right. We always set the packet duration to
784 // the expected, but we simulate dropped frames at one point.
785 1 do_interleave = 1;
786 1 init_out("vfr-noduration-interleave");
787 1 av_dict_set(&opts, "movflags", "+frag_keyframe+delay_moov", 0);
788 1 av_dict_set(&opts, "frag_duration", "650000", 0);
789 1 init_fps(1, 1, 30, 0);
790 1 mux_frames(gop_size/2, 0);
791 // Pretend that the packet duration is the normal, even if
792 // we actually skip a bunch of frames. (I.e., simulate that
793 // we don't know of the framedrop in advance.)
794 1 fake_pkt_duration = duration;
795 1 duration *= 10;
796 1 mux_frames(1, 0);
797 1 fake_pkt_duration = 0;
798 1 duration /= 10;
799 1 mux_frames(gop_size/2 - 1, 0);
800 1 mux_gops(1);
801 1 finish();
802 1 close_out();
803 1 clear_duration = 0;
804 1 do_interleave = 0;
805
806 // Write a fragmented file with b-frames and audio preroll,
807 // with negative cts values, removing the edit list for the
808 // video track.
809 1 init_out("delay-moov-elst-neg-cts");
810 1 av_dict_set(&opts, "movflags", "+frag_keyframe+delay_moov+negative_cts_offsets", 0);
811 1 init(1, 1);
812 1 mux_gops(2);
813 1 finish();
814 1 close_out();
815
816 // Write a fragmented file with b-frames without audio preroll,
817 // with negative cts values, avoiding any edit lists, allowing
818 // to use empty_moov instead of delay_moov.
819 1 init_out("empty-moov-neg-cts");
820 1 av_dict_set(&opts, "movflags", "+frag_keyframe+empty_moov+negative_cts_offsets", 0);
821 1 init(1, 0);
822 1 mux_gops(2);
823 1 finish();
824 1 close_out();
825
826 // Write a manually fragmented file, with timed ID3 packets at the head
827 // of each fragment.
828 1 init_out("emsg");
829 1 av_dict_set(&opts, "movflags", "+frag_custom+cmaf", 0);
830 1 init_fps(1, 0, 30, 1);
831 1 mux_id3();
832 1 mux_gops(2);
833 1 av_write_frame(ctx, NULL); // Flush fragment.
834 1 mux_id3();
835 1 mux_gops(2);
836 1 finish();
837 1 close_out();
838
839 1 av_free(md5);
840 1 av_packet_free(&pkt);
841
842 1 return check_faults > 0 ? 1 : 0;
843 }
844