FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/fftools/ffmpeg_mux.c
Date: 2024-07-17 14:05:47
Exec Total Coverage
Lines: 357 486 73.5%
Functions: 22 24 91.7%
Branches: 190 274 69.3%

Line Branch Exec Source
1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include <stdatomic.h>
20 #include <stdio.h>
21 #include <string.h>
22
23 #include "ffmpeg.h"
24 #include "ffmpeg_mux.h"
25 #include "ffmpeg_utils.h"
26 #include "sync_queue.h"
27
28 #include "libavutil/avstring.h"
29 #include "libavutil/fifo.h"
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/log.h"
32 #include "libavutil/mem.h"
33 #include "libavutil/time.h"
34 #include "libavutil/timestamp.h"
35
36 #include "libavcodec/packet.h"
37
38 #include "libavformat/avformat.h"
39 #include "libavformat/avio.h"
40
41 typedef struct MuxThreadContext {
42 AVPacket *pkt;
43 AVPacket *fix_sub_duration_pkt;
44 } MuxThreadContext;
45
46 48447 static Muxer *mux_from_of(OutputFile *of)
47 {
48 48447 return (Muxer*)of;
49 }
50
51 479902 static int64_t filesize(AVIOContext *pb)
52 {
53 479902 int64_t ret = -1;
54
55
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479902 if (pb) {
56 470647 ret = avio_size(pb);
57
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470647 if (ret <= 0) // FIXME improve avio_size() so it works with non seekable output too
58 101649 ret = avio_tell(pb);
59 }
60
61 479902 return ret;
62 }
63
64 static void mux_log_debug_ts(OutputStream *ost, const AVPacket *pkt)
65 {
66 static const char *desc[] = {
67 [LATENCY_PROBE_DEMUX] = "demux",
68 [LATENCY_PROBE_DEC_PRE] = "decode",
69 [LATENCY_PROBE_DEC_POST] = "decode",
70 [LATENCY_PROBE_FILTER_PRE] = "filter",
71 [LATENCY_PROBE_FILTER_POST] = "filter",
72 [LATENCY_PROBE_ENC_PRE] = "encode",
73 [LATENCY_PROBE_ENC_POST] = "encode",
74 [LATENCY_PROBE_NB] = "mux",
75 };
76
77 char latency[512];
78
79 *latency = 0;
80 if (pkt->opaque_ref) {
81 const FrameData *fd = (FrameData*)pkt->opaque_ref->data;
82 int64_t now = av_gettime_relative();
83 int64_t total = INT64_MIN;
84
85 int next;
86
87 for (unsigned i = 0; i < FF_ARRAY_ELEMS(fd->wallclock); i = next) {
88 int64_t val = fd->wallclock[i];
89
90 next = i + 1;
91
92 if (val == INT64_MIN)
93 continue;
94
95 if (total == INT64_MIN) {
96 total = now - val;
97 snprintf(latency, sizeof(latency), "total:%gms", total / 1e3);
98 }
99
100 // find the next valid entry
101 for (; next <= FF_ARRAY_ELEMS(fd->wallclock); next++) {
102 int64_t val_next = (next == FF_ARRAY_ELEMS(fd->wallclock)) ?
103 now : fd->wallclock[next];
104 int64_t diff;
105
106 if (val_next == INT64_MIN)
107 continue;
108 diff = val_next - val;
109
110 // print those stages that take at least 5% of total
111 if (100. * diff > 5. * total) {
112 av_strlcat(latency, ", ", sizeof(latency));
113
114 if (!strcmp(desc[i], desc[next]))
115 av_strlcat(latency, desc[i], sizeof(latency));
116 else
117 av_strlcatf(latency, sizeof(latency), "%s-%s:",
118 desc[i], desc[next]);
119
120 av_strlcatf(latency, sizeof(latency), " %gms/%d%%",
121 diff / 1e3, (int)(100. * diff / total));
122 }
123
124 break;
125 }
126
127 }
128 }
129
130 av_log(ost, AV_LOG_INFO, "muxer <- pts:%s pts_time:%s dts:%s dts_time:%s "
131 "duration:%s duration_time:%s size:%d latency(%s)\n",
132 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
133 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
134 av_ts2str(pkt->duration), av_ts2timestr(pkt->duration, &ost->st->time_base),
135 pkt->size, *latency ? latency : "N/A");
136 }
137
138 473124 static int mux_fixup_ts(Muxer *mux, MuxStream *ms, AVPacket *pkt)
139 {
140 473124 OutputStream *ost = &ms->ost;
141
142 #if FFMPEG_OPT_VSYNC_DROP
143
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473124 if (ost->type == AVMEDIA_TYPE_VIDEO && ms->ts_drop)
144 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
145 #endif
146
147 // rescale timestamps to the stream timebase
148
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473124 if (ost->type == AVMEDIA_TYPE_AUDIO && !ost->enc) {
149 // use av_rescale_delta() for streamcopying audio, to preserve
150 // accuracy with coarse input timebases
151 48516 int duration = av_get_audio_frame_duration2(ost->st->codecpar, pkt->size);
152
153
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48516 if (!duration)
154 16456 duration = ost->st->codecpar->frame_size;
155
156 97032 pkt->dts = av_rescale_delta(pkt->time_base, pkt->dts,
157 48516 (AVRational){1, ost->st->codecpar->sample_rate}, duration,
158 48516 &ms->ts_rescale_delta_last, ost->st->time_base);
159 48516 pkt->pts = pkt->dts;
160
161 48516 pkt->duration = av_rescale_q(pkt->duration, pkt->time_base, ost->st->time_base);
162 } else
163 424608 av_packet_rescale_ts(pkt, pkt->time_base, ost->st->time_base);
164 473124 pkt->time_base = ost->st->time_base;
165
166
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473124 if (!(mux->fc->oformat->flags & AVFMT_NOTIMESTAMPS)) {
167
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212101 if (pkt->dts != AV_NOPTS_VALUE &&
168
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212101 pkt->pts != AV_NOPTS_VALUE &&
169
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211007 pkt->dts > pkt->pts) {
170 av_log(ost, AV_LOG_WARNING, "Invalid DTS: %"PRId64" PTS: %"PRId64", replacing by guess\n",
171 pkt->dts, pkt->pts);
172 pkt->pts =
173 pkt->dts = pkt->pts + pkt->dts + ms->last_mux_dts + 1
174 - FFMIN3(pkt->pts, pkt->dts, ms->last_mux_dts + 1)
175 - FFMAX3(pkt->pts, pkt->dts, ms->last_mux_dts + 1);
176 }
177
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212101 if ((ost->type == AVMEDIA_TYPE_AUDIO || ost->type == AVMEDIA_TYPE_VIDEO || ost->type == AVMEDIA_TYPE_SUBTITLE) &&
178
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212088 pkt->dts != AV_NOPTS_VALUE &&
179
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212088 ms->last_mux_dts != AV_NOPTS_VALUE) {
180 206487 int64_t max = ms->last_mux_dts + !(mux->fc->oformat->flags & AVFMT_TS_NONSTRICT);
181
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206487 if (pkt->dts < max) {
182
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28 int loglevel = max - pkt->dts > 2 || ost->type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
183
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28 if (exit_on_error)
184 loglevel = AV_LOG_ERROR;
185 28 av_log(ost, loglevel, "Non-monotonic DTS; "
186 "previous: %"PRId64", current: %"PRId64"; ",
187 ms->last_mux_dts, pkt->dts);
188
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28 if (exit_on_error) {
189 return AVERROR(EINVAL);
190 }
191
192 28 av_log(ost, loglevel, "changing to %"PRId64". This may result "
193 "in incorrect timestamps in the output file.\n",
194 max);
195
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28 if (pkt->pts >= pkt->dts)
196 28 pkt->pts = FFMAX(pkt->pts, max);
197 28 pkt->dts = max;
198 }
199 }
200 }
201 473124 ms->last_mux_dts = pkt->dts;
202
203
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473124 if (debug_ts)
204 mux_log_debug_ts(ost, pkt);
205
206 473124 return 0;
207 }
208
209 473124 static int write_packet(Muxer *mux, OutputStream *ost, AVPacket *pkt)
210 {
211 473124 MuxStream *ms = ms_from_ost(ost);
212 473124 AVFormatContext *s = mux->fc;
213 int64_t fs;
214 uint64_t frame_num;
215 int ret;
216
217 473124 fs = filesize(s->pb);
218 473124 atomic_store(&mux->last_filesize, fs);
219
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473124 if (fs >= mux->limit_filesize) {
220 ret = AVERROR_EOF;
221 goto fail;
222 }
223
224 473124 ret = mux_fixup_ts(mux, ms, pkt);
225
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473124 if (ret < 0)
226 goto fail;
227
228 473124 ms->data_size_mux += pkt->size;
229 473124 frame_num = atomic_fetch_add(&ost->packets_written, 1);
230
231 473124 pkt->stream_index = ost->index;
232
233
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473124 if (ms->stats.io)
234 enc_stats_write(ost, &ms->stats, NULL, pkt, frame_num);
235
236 473124 ret = av_interleaved_write_frame(s, pkt);
237
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473124 if (ret < 0) {
238 av_log(ost, AV_LOG_ERROR,
239 "Error submitting a packet to the muxer: %s\n",
240 av_err2str(ret));
241 goto fail;
242 }
243
244 473124 return 0;
245 fail:
246 av_packet_unref(pkt);
247 return ret;
248 }
249
250 480293 static int sync_queue_process(Muxer *mux, MuxStream *ms, AVPacket *pkt, int *stream_eof)
251 {
252 480293 OutputFile *of = &mux->of;
253
254
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480293 if (ms->sq_idx_mux >= 0) {
255 827 int ret = sq_send(mux->sq_mux, ms->sq_idx_mux, SQPKT(pkt));
256
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827 if (ret < 0) {
257
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22 if (ret == AVERROR_EOF)
258 22 *stream_eof = 1;
259
260 22 return ret;
261 }
262
263 745 while (1) {
264 1550 ret = sq_receive(mux->sq_mux, -1, SQPKT(mux->sq_pkt));
265
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1550 if (ret < 0) {
266 /* n.b.: We forward EOF from the sync queue, terminating muxing.
267 * This assumes that if a muxing sync queue is present, then all
268 * the streams use it. That is true currently, but may change in
269 * the future, then this code needs to be revisited.
270 */
271
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805 return ret == AVERROR(EAGAIN) ? 0 : ret;
272 }
273
274 745 ret = write_packet(mux, of->streams[ret],
275 mux->sq_pkt);
276
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745 if (ret < 0)
277 return ret;
278 }
279
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479466 } else if (pkt)
280 472379 return write_packet(mux, &ms->ost, pkt);
281
282 7087 return 0;
283 }
284
285 static int of_streamcopy(OutputFile *of, OutputStream *ost, AVPacket *pkt);
286
287 /* apply the output bitstream filters */
288 481113 static int mux_packet_filter(Muxer *mux, MuxThreadContext *mt,
289 OutputStream *ost, AVPacket *pkt, int *stream_eof)
290 {
291 481113 MuxStream *ms = ms_from_ost(ost);
292 const char *err_msg;
293 int ret;
294
295
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481113 if (pkt && !ost->enc) {
296 67177 ret = of_streamcopy(&mux->of, ost, pkt);
297
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67177 if (ret == AVERROR(EAGAIN))
298 247 return 0;
299
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66930 else if (ret == AVERROR_EOF) {
300 45 av_packet_unref(pkt);
301 45 pkt = NULL;
302 45 *stream_eof = 1;
303
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66885 } else if (ret < 0)
304 goto fail;
305 }
306
307 // emit heartbeat for -fix_sub_duration;
308 // we are only interested in heartbeats on on random access points.
309
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480866 if (pkt && (pkt->flags & AV_PKT_FLAG_KEY)) {
310 437603 mt->fix_sub_duration_pkt->opaque = (void*)(intptr_t)PKT_OPAQUE_FIX_SUB_DURATION;
311 437603 mt->fix_sub_duration_pkt->pts = pkt->pts;
312 437603 mt->fix_sub_duration_pkt->time_base = pkt->time_base;
313
314 437603 ret = sch_mux_sub_heartbeat(mux->sch, mux->sch_idx, ms->sch_idx,
315 437603 mt->fix_sub_duration_pkt);
316
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437603 if (ret < 0)
317 goto fail;
318 }
319
320
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480866 if (ms->bsf_ctx) {
321 10296 int bsf_eof = 0;
322
323
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10296 if (pkt)
324 10164 av_packet_rescale_ts(pkt, pkt->time_base, ms->bsf_ctx->time_base_in);
325
326 10296 ret = av_bsf_send_packet(ms->bsf_ctx, pkt);
327
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10296 if (ret < 0) {
328 err_msg = "submitting a packet for bitstream filtering";
329 goto fail;
330 }
331
332
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20021 while (!bsf_eof) {
333 19889 ret = av_bsf_receive_packet(ms->bsf_ctx, ms->bsf_pkt);
334
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19889 if (ret == AVERROR(EAGAIN))
335 10164 return 0;
336
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9725 else if (ret == AVERROR_EOF)
337 132 bsf_eof = 1;
338
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9593 else if (ret < 0) {
339 2 av_log(ost, AV_LOG_ERROR,
340 "Error applying bitstream filters to a packet: %s",
341 2 av_err2str(ret));
342
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2 if (exit_on_error)
343 return ret;
344 2 continue;
345 }
346
347
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9723 if (!bsf_eof)
348 9591 ms->bsf_pkt->time_base = ms->bsf_ctx->time_base_out;
349
350
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9723 ret = sync_queue_process(mux, ms, bsf_eof ? NULL : ms->bsf_pkt, stream_eof);
351
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9723 if (ret < 0)
352 goto mux_fail;
353 }
354 132 *stream_eof = 1;
355 } else {
356 470570 ret = sync_queue_process(mux, ms, pkt, stream_eof);
357
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470570 if (ret < 0)
358 32 goto mux_fail;
359 }
360
361
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470670 return *stream_eof ? AVERROR_EOF : 0;
362
363 32 mux_fail:
364 32 err_msg = "submitting a packet to the muxer";
365
366 32 fail:
367
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32 if (ret != AVERROR_EOF)
368 av_log(ost, AV_LOG_ERROR, "Error %s: %s\n", err_msg, av_err2str(ret));
369 32 return ret;
370 }
371
372 6778 static void thread_set_name(Muxer *mux)
373 {
374 char name[16];
375 6778 snprintf(name, sizeof(name), "mux%d:%s",
376 6778 mux->of.index, mux->fc->oformat->name);
377 6778 ff_thread_setname(name);
378 6778 }
379
380 6778 static void mux_thread_uninit(MuxThreadContext *mt)
381 {
382 6778 av_packet_free(&mt->pkt);
383 6778 av_packet_free(&mt->fix_sub_duration_pkt);
384
385 6778 memset(mt, 0, sizeof(*mt));
386 6778 }
387
388 6778 static int mux_thread_init(MuxThreadContext *mt)
389 {
390 6778 memset(mt, 0, sizeof(*mt));
391
392 6778 mt->pkt = av_packet_alloc();
393
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6778 if (!mt->pkt)
394 goto fail;
395
396 6778 mt->fix_sub_duration_pkt = av_packet_alloc();
397
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6778 if (!mt->fix_sub_duration_pkt)
398 goto fail;
399
400 6778 return 0;
401
402 fail:
403 mux_thread_uninit(mt);
404 return AVERROR(ENOMEM);
405 }
406
407 6778 int muxer_thread(void *arg)
408 {
409 6778 Muxer *mux = arg;
410 6778 OutputFile *of = &mux->of;
411
412 MuxThreadContext mt;
413
414 6778 int ret = 0;
415
416 6778 ret = mux_thread_init(&mt);
417
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6778 if (ret < 0)
418 goto finish;
419
420 6778 thread_set_name(mux);
421
422 481103 while (1) {
423 OutputStream *ost;
424 487881 int stream_idx, stream_eof = 0;
425
426 487881 ret = sch_mux_receive(mux->sch, of->index, mt.pkt);
427 487881 stream_idx = mt.pkt->stream_index;
428
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487881 if (stream_idx < 0) {
429 6768 av_log(mux, AV_LOG_VERBOSE, "All streams finished\n");
430 6768 ret = 0;
431 6778 break;
432 }
433
434 481113 ost = of->streams[mux->sch_stream_idx[stream_idx]];
435 481113 mt.pkt->stream_index = ost->index;
436 481113 mt.pkt->flags &= ~AV_PKT_FLAG_TRUSTED;
437
438
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481113 ret = mux_packet_filter(mux, &mt, ost, ret < 0 ? NULL : mt.pkt, &stream_eof);
439 481113 av_packet_unref(mt.pkt);
440
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481113 if (ret == AVERROR_EOF) {
441
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208 if (stream_eof) {
442 198 sch_mux_receive_finish(mux->sch, of->index, stream_idx);
443 } else {
444 10 av_log(mux, AV_LOG_VERBOSE, "Muxer returned EOF\n");
445 10 ret = 0;
446 10 break;
447 }
448
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480905 } else if (ret < 0) {
449 av_log(mux, AV_LOG_ERROR, "Error muxing a packet\n");
450 break;
451 }
452 }
453
454 6778 finish:
455 6778 mux_thread_uninit(&mt);
456
457 6778 return ret;
458 }
459
460 67177 static int of_streamcopy(OutputFile *of, OutputStream *ost, AVPacket *pkt)
461 {
462 67177 MuxStream *ms = ms_from_ost(ost);
463
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67177 FrameData *fd = pkt->opaque_ref ? (FrameData*)pkt->opaque_ref->data : NULL;
464
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67177 int64_t dts = fd ? fd->dts_est : AV_NOPTS_VALUE;
465
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67177 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
466 int64_t ts_offset;
467
468
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67177 if (of->recording_time != INT64_MAX &&
469
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1341 dts >= of->recording_time + start_time)
470 45 return AVERROR_EOF;
471
472
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67132 if (!ms->streamcopy_started && !(pkt->flags & AV_PKT_FLAG_KEY) &&
473
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64 !ms->copy_initial_nonkeyframes)
474 64 return AVERROR(EAGAIN);
475
476
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67068 if (!ms->streamcopy_started) {
477
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808 if (!ms->copy_prior_start &&
478 (pkt->pts == AV_NOPTS_VALUE ?
479 dts < ms->ts_copy_start :
480 pkt->pts < av_rescale_q(ms->ts_copy_start, AV_TIME_BASE_Q, pkt->time_base)))
481 return AVERROR(EAGAIN);
482
483
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808 if (of->start_time != AV_NOPTS_VALUE && dts < of->start_time)
484 183 return AVERROR(EAGAIN);
485 }
486
487 66885 ts_offset = av_rescale_q(start_time, AV_TIME_BASE_Q, pkt->time_base);
488
489
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66885 if (pkt->pts != AV_NOPTS_VALUE)
490 57525 pkt->pts -= ts_offset;
491
492
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66885 if (pkt->dts == AV_NOPTS_VALUE) {
493 9126 pkt->dts = av_rescale_q(dts, AV_TIME_BASE_Q, pkt->time_base);
494
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57759 } else if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
495 47365 pkt->pts = pkt->dts - ts_offset;
496 }
497
498 66885 pkt->dts -= ts_offset;
499
500 66885 ms->streamcopy_started = 1;
501
502 66885 return 0;
503 }
504
505 int print_sdp(const char *filename);
506
507 int print_sdp(const char *filename)
508 {
509 char sdp[16384];
510 int j = 0, ret;
511 AVIOContext *sdp_pb;
512 AVFormatContext **avc;
513
514 avc = av_malloc_array(nb_output_files, sizeof(*avc));
515 if (!avc)
516 return AVERROR(ENOMEM);
517 for (int i = 0; i < nb_output_files; i++) {
518 Muxer *mux = mux_from_of(output_files[i]);
519
520 if (!strcmp(mux->fc->oformat->name, "rtp")) {
521 avc[j] = mux->fc;
522 j++;
523 }
524 }
525
526 if (!j) {
527 av_log(NULL, AV_LOG_ERROR, "No output streams in the SDP.\n");
528 ret = AVERROR(EINVAL);
529 goto fail;
530 }
531
532 ret = av_sdp_create(avc, j, sdp, sizeof(sdp));
533 if (ret < 0)
534 goto fail;
535
536 if (!filename) {
537 printf("SDP:\n%s\n", sdp);
538 fflush(stdout);
539 } else {
540 ret = avio_open2(&sdp_pb, filename, AVIO_FLAG_WRITE, &int_cb, NULL);
541 if (ret < 0) {
542 av_log(NULL, AV_LOG_ERROR, "Failed to open sdp file '%s'\n", filename);
543 goto fail;
544 }
545
546 avio_print(sdp_pb, sdp);
547 avio_closep(&sdp_pb);
548 }
549
550 fail:
551 av_freep(&avc);
552 return ret;
553 }
554
555 6778 int mux_check_init(void *arg)
556 {
557 6778 Muxer *mux = arg;
558 6778 OutputFile *of = &mux->of;
559 6778 AVFormatContext *fc = mux->fc;
560 int ret;
561
562 6778 ret = avformat_write_header(fc, &mux->opts);
563
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6778 if (ret < 0) {
564 av_log(mux, AV_LOG_ERROR, "Could not write header (incorrect codec "
565 "parameters ?): %s\n", av_err2str(ret));
566 return ret;
567 }
568 //assert_avoptions(of->opts);
569 6778 mux->header_written = 1;
570
571 6778 av_dump_format(fc, of->index, fc->url, 1);
572 6778 atomic_fetch_add(&nb_output_dumped, 1);
573
574 6778 return 0;
575 }
576
577 7131 static int bsf_init(MuxStream *ms)
578 {
579 7131 OutputStream *ost = &ms->ost;
580 7131 AVBSFContext *ctx = ms->bsf_ctx;
581 int ret;
582
583
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7131 if (!ctx)
584 6999 return avcodec_parameters_copy(ost->st->codecpar, ost->par_in);
585
586 132 ret = avcodec_parameters_copy(ctx->par_in, ost->par_in);
587
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132 if (ret < 0)
588 return ret;
589
590 132 ctx->time_base_in = ost->st->time_base;
591
592 132 ret = av_bsf_init(ctx);
593
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132 if (ret < 0) {
594 av_log(ms, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n",
595 ctx->filter->name);
596 return ret;
597 }
598
599 132 ret = avcodec_parameters_copy(ost->st->codecpar, ctx->par_out);
600
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132 if (ret < 0)
601 return ret;
602 132 ost->st->time_base = ctx->time_base_out;
603
604 132 ms->bsf_pkt = av_packet_alloc();
605
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132 if (!ms->bsf_pkt)
606 return AVERROR(ENOMEM);
607
608 132 return 0;
609 }
610
611 7131 int of_stream_init(OutputFile *of, OutputStream *ost)
612 {
613 7131 Muxer *mux = mux_from_of(of);
614 7131 MuxStream *ms = ms_from_ost(ost);
615 int ret;
616
617 /* initialize bitstream filters for the output stream
618 * needs to be done here, because the codec id for streamcopy is not
619 * known until now */
620 7131 ret = bsf_init(ms);
621
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7131 if (ret < 0)
622 return ret;
623
624
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7131 if (ms->stream_duration) {
625 5446 ost->st->duration = av_rescale_q(ms->stream_duration, ms->stream_duration_tb,
626 5446 ost->st->time_base);
627 }
628
629
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7131 if (ms->sch_idx >= 0)
630 7130 return sch_mux_stream_ready(mux->sch, of->index, ms->sch_idx);
631
632 1 return 0;
633 }
634
635 6778 static int check_written(OutputFile *of)
636 {
637 6778 int64_t total_packets_written = 0;
638 6778 int pass1_used = 1;
639 6778 int ret = 0;
640
641
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13909 for (int i = 0; i < of->nb_streams; i++) {
642 7131 OutputStream *ost = of->streams[i];
643 7131 uint64_t packets_written = atomic_load(&ost->packets_written);
644
645 7131 total_packets_written += packets_written;
646
647
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7131 if (ost->enc_ctx &&
648
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6485 (ost->enc_ctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2))
649 != AV_CODEC_FLAG_PASS1)
650 6481 pass1_used = 0;
651
652
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7131 if (!packets_written &&
653
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47 (abort_on_flags & ABORT_ON_FLAG_EMPTY_OUTPUT_STREAM)) {
654 av_log(ost, AV_LOG_FATAL, "Empty output stream\n");
655 ret = err_merge(ret, AVERROR(EINVAL));
656 }
657 }
658
659
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6778 if (!total_packets_written) {
660 14 int level = AV_LOG_WARNING;
661
662
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14 if (abort_on_flags & ABORT_ON_FLAG_EMPTY_OUTPUT) {
663 ret = err_merge(ret, AVERROR(EINVAL));
664 level = AV_LOG_FATAL;
665 }
666
667
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14 av_log(of, level, "Output file is empty, nothing was encoded%s\n",
668 pass1_used ? "" : "(check -ss / -t / -frames parameters if used)");
669 }
670
671 6778 return ret;
672 }
673
674 6778 static void mux_final_stats(Muxer *mux)
675 {
676 6778 OutputFile *of = &mux->of;
677 6778 uint64_t total_packets = 0, total_size = 0;
678 6778 uint64_t video_size = 0, audio_size = 0, subtitle_size = 0,
679 6778 extra_size = 0, other_size = 0;
680
681 6778 uint8_t overhead[16] = "unknown";
682 6778 int64_t file_size = of_filesize(of);
683
684 6778 av_log(of, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
685 of->index, of->url);
686
687
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13909 for (int j = 0; j < of->nb_streams; j++) {
688 7131 OutputStream *ost = of->streams[j];
689 7131 MuxStream *ms = ms_from_ost(ost);
690 7131 const AVCodecParameters *par = ost->st->codecpar;
691 7131 const enum AVMediaType type = par->codec_type;
692 7131 const uint64_t s = ms->data_size_mux;
693
694
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7131 switch (type) {
695 5537 case AVMEDIA_TYPE_VIDEO: video_size += s; break;
696 1512 case AVMEDIA_TYPE_AUDIO: audio_size += s; break;
697 71 case AVMEDIA_TYPE_SUBTITLE: subtitle_size += s; break;
698 11 default: other_size += s; break;
699 }
700
701 7131 extra_size += par->extradata_size;
702 7131 total_size += s;
703 7131 total_packets += atomic_load(&ost->packets_written);
704
705 7131 av_log(of, AV_LOG_VERBOSE, " Output stream #%d:%d (%s): ",
706 of->index, j, av_get_media_type_string(type));
707
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7131 if (ost->enc) {
708 6485 av_log(of, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
709 ost->frames_encoded);
710
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6485 if (type == AVMEDIA_TYPE_AUDIO)
711 1247 av_log(of, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
712 6485 av_log(of, AV_LOG_VERBOSE, "; ");
713 }
714
715 7131 av_log(of, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
716 7131 atomic_load(&ost->packets_written), s);
717
718 7131 av_log(of, AV_LOG_VERBOSE, "\n");
719 }
720
721 6778 av_log(of, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
722 total_packets, total_size);
723
724
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6778 if (total_size && file_size > 0 && file_size >= total_size) {
725 4655 snprintf(overhead, sizeof(overhead), "%f%%",
726 4655 100.0 * (file_size - total_size) / total_size);
727 }
728
729 6778 av_log(of, AV_LOG_INFO,
730 "video:%1.0fKiB audio:%1.0fKiB subtitle:%1.0fKiB other streams:%1.0fKiB "
731 "global headers:%1.0fKiB muxing overhead: %s\n",
732 video_size / 1024.0,
733 audio_size / 1024.0,
734 subtitle_size / 1024.0,
735 other_size / 1024.0,
736 extra_size / 1024.0,
737 overhead);
738 6778 }
739
740 6778 int of_write_trailer(OutputFile *of)
741 {
742 6778 Muxer *mux = mux_from_of(of);
743 6778 AVFormatContext *fc = mux->fc;
744 6778 int ret, mux_result = 0;
745
746
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6778 if (!mux->header_written) {
747 av_log(mux, AV_LOG_ERROR,
748 "Nothing was written into output file, because "
749 "at least one of its streams received no packets.\n");
750 return AVERROR(EINVAL);
751 }
752
753 6778 ret = av_write_trailer(fc);
754
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6778 if (ret < 0) {
755 av_log(mux, AV_LOG_ERROR, "Error writing trailer: %s\n", av_err2str(ret));
756 mux_result = err_merge(mux_result, ret);
757 }
758
759 6778 mux->last_filesize = filesize(fc->pb);
760
761
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6778 if (!(fc->oformat->flags & AVFMT_NOFILE)) {
762 6687 ret = avio_closep(&fc->pb);
763
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6687 if (ret < 0) {
764 av_log(mux, AV_LOG_ERROR, "Error closing file: %s\n", av_err2str(ret));
765 mux_result = err_merge(mux_result, ret);
766 }
767 }
768
769 6778 mux_final_stats(mux);
770
771 // check whether anything was actually written
772 6778 ret = check_written(of);
773 6778 mux_result = err_merge(mux_result, ret);
774
775 6778 return mux_result;
776 }
777
778 21393 static void enc_stats_uninit(EncStats *es)
779 {
780
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21393 for (int i = 0; i < es->nb_components; i++)
781 av_freep(&es->components[i].str);
782 21393 av_freep(&es->components);
783
784
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21393 if (es->lock_initialized)
785 pthread_mutex_destroy(&es->lock);
786 21393 es->lock_initialized = 0;
787 21393 }
788
789 7131 static void ost_free(OutputStream **post)
790 {
791 7131 OutputStream *ost = *post;
792 MuxStream *ms;
793
794
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7131 if (!ost)
795 return;
796 7131 ms = ms_from_ost(ost);
797
798 7131 enc_free(&ost->enc);
799 7131 fg_free(&ost->fg_simple);
800
801
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7131 if (ost->logfile) {
802
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4 if (fclose(ost->logfile))
803 av_log(ms, AV_LOG_ERROR,
804 "Error closing logfile, loss of information possible: %s\n",
805 av_err2str(AVERROR(errno)));
806 4 ost->logfile = NULL;
807 }
808
809 7131 avcodec_parameters_free(&ost->par_in);
810
811 7131 av_bsf_free(&ms->bsf_ctx);
812 7131 av_packet_free(&ms->bsf_pkt);
813
814 7131 av_packet_free(&ms->pkt);
815
816 7131 av_freep(&ost->kf.pts);
817 7131 av_expr_free(ost->kf.pexpr);
818
819 7131 av_freep(&ost->logfile_prefix);
820
821 7131 av_freep(&ost->attachment_filename);
822
823
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7131 if (ost->enc_ctx)
824 6485 av_freep(&ost->enc_ctx->stats_in);
825 7131 avcodec_free_context(&ost->enc_ctx);
826
827 7131 enc_stats_uninit(&ost->enc_stats_pre);
828 7131 enc_stats_uninit(&ost->enc_stats_post);
829 7131 enc_stats_uninit(&ms->stats);
830
831 7131 av_freep(post);
832 }
833
834 6778 static void fc_close(AVFormatContext **pfc)
835 {
836 6778 AVFormatContext *fc = *pfc;
837
838
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6778 if (!fc)
839 return;
840
841
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6778 if (!(fc->oformat->flags & AVFMT_NOFILE))
842 6687 avio_closep(&fc->pb);
843 6778 avformat_free_context(fc);
844
845 6778 *pfc = NULL;
846 }
847
848 6778 void of_free(OutputFile **pof)
849 {
850 6778 OutputFile *of = *pof;
851 Muxer *mux;
852
853
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6778 if (!of)
854 return;
855 6778 mux = mux_from_of(of);
856
857 6778 sq_free(&mux->sq_mux);
858
859
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13909 for (int i = 0; i < of->nb_streams; i++)
860 7131 ost_free(&of->streams[i]);
861 6778 av_freep(&of->streams);
862
863 6778 av_freep(&mux->sch_stream_idx);
864
865 6778 av_dict_free(&mux->opts);
866 6778 av_dict_free(&mux->enc_opts_used);
867
868 6778 av_packet_free(&mux->sq_pkt);
869
870 6778 fc_close(&mux->fc);
871
872 6778 av_freep(pof);
873 }
874
875 27760 int64_t of_filesize(OutputFile *of)
876 {
877 27760 Muxer *mux = mux_from_of(of);
878 27760 return atomic_load(&mux->last_filesize);
879 }
880