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d119ae2fd8
ffmpeg/fftools/ffmpeg_mux.c
Anton Khirnov d119ae2fd8 fftools/ffmpeg: convert to a threaded architecture 
Change the main loop and every component (demuxers, decoders, filters,
encoders, muxers) to use the previously added transcode scheduler. Every
instance of every such component was already running in a separate
thread, but now they can actually run in parallel.

Changes the results of ffmpeg-fix_sub_duration_heartbeat - tested by
JEEB to be more correct and deterministic.
2023-12-12 08:24:18 +01:00

804 lines
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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdatomic.h>
#include <stdio.h>
#include <string.h>
#include "ffmpeg.h"
#include "ffmpeg_mux.h"
#include "ffmpeg_utils.h"
#include "sync_queue.h"
#include "libavutil/fifo.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/log.h"
#include "libavutil/mem.h"
#include "libavutil/timestamp.h"
#include "libavcodec/packet.h"
#include "libavformat/avformat.h"
#include "libavformat/avio.h"
typedef struct MuxThreadContext {
AVPacket *pkt;
AVPacket *fix_sub_duration_pkt;
} MuxThreadContext;
static Muxer *mux_from_of(OutputFile *of)
{
return (Muxer*)of;
}
static int64_t filesize(AVIOContext *pb)
{
int64_t ret = -1;
if (pb) {
ret = avio_size(pb);
if (ret <= 0) // FIXME improve avio_size() so it works with non seekable output too
ret = avio_tell(pb);
}
return ret;
}
static int write_packet(Muxer *mux, OutputStream *ost, AVPacket *pkt)
{
MuxStream *ms = ms_from_ost(ost);
AVFormatContext *s = mux->fc;
int64_t fs;
uint64_t frame_num;
int ret;
fs = filesize(s->pb);
atomic_store(&mux->last_filesize, fs);
if (fs >= mux->limit_filesize) {
ret = AVERROR_EOF;
goto fail;
}
if (ost->type == AVMEDIA_TYPE_VIDEO && ost->vsync_method == VSYNC_DROP)
pkt->pts = pkt->dts = AV_NOPTS_VALUE;
// rescale timestamps to the stream timebase
if (ost->type == AVMEDIA_TYPE_AUDIO && !ost->enc) {
// use av_rescale_delta() for streamcopying audio, to preserve
// accuracy with coarse input timebases
int duration = av_get_audio_frame_duration2(ost->st->codecpar, pkt->size);
if (!duration)
duration = ost->st->codecpar->frame_size;
pkt->dts = av_rescale_delta(pkt->time_base, pkt->dts,
(AVRational){1, ost->st->codecpar->sample_rate}, duration,
&ms->ts_rescale_delta_last, ost->st->time_base);
pkt->pts = pkt->dts;
pkt->duration = av_rescale_q(pkt->duration, pkt->time_base, ost->st->time_base);
} else
av_packet_rescale_ts(pkt, pkt->time_base, ost->st->time_base);
pkt->time_base = ost->st->time_base;
if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
if (pkt->dts != AV_NOPTS_VALUE &&
pkt->pts != AV_NOPTS_VALUE &&
pkt->dts > pkt->pts) {
av_log(s, AV_LOG_WARNING, "Invalid DTS: %"PRId64" PTS: %"PRId64" in output stream %d:%d, replacing by guess\n",
pkt->dts, pkt->pts,
ost->file_index, ost->st->index);
pkt->pts =
pkt->dts = pkt->pts + pkt->dts + ms->last_mux_dts + 1
- FFMIN3(pkt->pts, pkt->dts, ms->last_mux_dts + 1)
- FFMAX3(pkt->pts, pkt->dts, ms->last_mux_dts + 1);
}
if ((ost->type == AVMEDIA_TYPE_AUDIO || ost->type == AVMEDIA_TYPE_VIDEO || ost->type == AVMEDIA_TYPE_SUBTITLE) &&
pkt->dts != AV_NOPTS_VALUE &&
ms->last_mux_dts != AV_NOPTS_VALUE) {
int64_t max = ms->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
if (pkt->dts < max) {
int loglevel = max - pkt->dts > 2 || ost->type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
if (exit_on_error)
loglevel = AV_LOG_ERROR;
av_log(s, loglevel, "Non-monotonic DTS in output stream "
"%d:%d; previous: %"PRId64", current: %"PRId64"; ",
ost->file_index, ost->st->index, ms->last_mux_dts, pkt->dts);
if (exit_on_error) {
ret = AVERROR(EINVAL);
goto fail;
}
av_log(s, loglevel, "changing to %"PRId64". This may result "
"in incorrect timestamps in the output file.\n",
max);
if (pkt->pts >= pkt->dts)
pkt->pts = FFMAX(pkt->pts, max);
pkt->dts = max;
}
}
}
ms->last_mux_dts = pkt->dts;
ms->data_size_mux += pkt->size;
frame_num = atomic_fetch_add(&ost->packets_written, 1);
pkt->stream_index = ost->index;
if (debug_ts) {
av_log(ost, AV_LOG_INFO, "muxer <- type:%s "
"pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s duration:%s duration_time:%s size:%d\n",
av_get_media_type_string(ost->type),
av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
av_ts2str(pkt->duration), av_ts2timestr(pkt->duration, &ost->st->time_base),
pkt->size
);
}
if (ms->stats.io)
enc_stats_write(ost, &ms->stats, NULL, pkt, frame_num);
ret = av_interleaved_write_frame(s, pkt);
if (ret < 0) {
av_log(ost, AV_LOG_ERROR,
"Error submitting a packet to the muxer: %s\n",
av_err2str(ret));
goto fail;
}
return 0;
fail:
av_packet_unref(pkt);
return ret;
}
static int sync_queue_process(Muxer *mux, OutputStream *ost, AVPacket *pkt, int *stream_eof)
{
OutputFile *of = &mux->of;
if (ost->sq_idx_mux >= 0) {
int ret = sq_send(mux->sq_mux, ost->sq_idx_mux, SQPKT(pkt));
if (ret < 0) {
if (ret == AVERROR_EOF)
*stream_eof = 1;
return ret;
}
while (1) {
ret = sq_receive(mux->sq_mux, -1, SQPKT(mux->sq_pkt));
if (ret < 0) {
/* n.b.: We forward EOF from the sync queue, terminating muxing.
* This assumes that if a muxing sync queue is present, then all
* the streams use it. That is true currently, but may change in
* the future, then this code needs to be revisited.
*/
return ret == AVERROR(EAGAIN) ? 0 : ret;
}
ret = write_packet(mux, of->streams[ret],
mux->sq_pkt);
if (ret < 0)
return ret;
}
} else if (pkt)
return write_packet(mux, ost, pkt);
return 0;
}
static int of_streamcopy(OutputStream *ost, AVPacket *pkt);
/* apply the output bitstream filters */
static int mux_packet_filter(Muxer *mux, MuxThreadContext *mt,
OutputStream *ost, AVPacket *pkt, int *stream_eof)
{
MuxStream *ms = ms_from_ost(ost);
const char *err_msg;
int ret = 0;
if (pkt && !ost->enc) {
ret = of_streamcopy(ost, pkt);
if (ret == AVERROR(EAGAIN))
return 0;
else if (ret == AVERROR_EOF) {
av_packet_unref(pkt);
pkt = NULL;
ret = 0;
} else if (ret < 0)
goto fail;
}
// emit heartbeat for -fix_sub_duration;
// we are only interested in heartbeats on on random access points.
if (pkt && (pkt->flags & AV_PKT_FLAG_KEY)) {
mt->fix_sub_duration_pkt->opaque = (void*)(intptr_t)PKT_OPAQUE_FIX_SUB_DURATION;
mt->fix_sub_duration_pkt->pts = pkt->pts;
mt->fix_sub_duration_pkt->time_base = pkt->time_base;
ret = sch_mux_sub_heartbeat(mux->sch, mux->sch_idx, ms->sch_idx,
mt->fix_sub_duration_pkt);
if (ret < 0)
goto fail;
}
if (ms->bsf_ctx) {
int bsf_eof = 0;
if (pkt)
av_packet_rescale_ts(pkt, pkt->time_base, ms->bsf_ctx->time_base_in);
ret = av_bsf_send_packet(ms->bsf_ctx, pkt);
if (ret < 0) {
err_msg = "submitting a packet for bitstream filtering";
goto fail;
}
while (!bsf_eof) {
ret = av_bsf_receive_packet(ms->bsf_ctx, ms->bsf_pkt);
if (ret == AVERROR(EAGAIN))
return 0;
else if (ret == AVERROR_EOF)
bsf_eof = 1;
else if (ret < 0) {
av_log(ost, AV_LOG_ERROR,
"Error applying bitstream filters to a packet: %s",
av_err2str(ret));
if (exit_on_error)
return ret;
continue;
}
if (!bsf_eof)
ms->bsf_pkt->time_base = ms->bsf_ctx->time_base_out;
ret = sync_queue_process(mux, ost, bsf_eof ? NULL : ms->bsf_pkt, stream_eof);
if (ret < 0)
goto mux_fail;
}
*stream_eof = 1;
return AVERROR_EOF;
} else {
ret = sync_queue_process(mux, ost, pkt, stream_eof);
if (ret < 0)
goto mux_fail;
}
return 0;
mux_fail:
err_msg = "submitting a packet to the muxer";
fail:
if (ret != AVERROR_EOF)
av_log(ost, AV_LOG_ERROR, "Error %s: %s\n", err_msg, av_err2str(ret));
return ret;
}
static void thread_set_name(OutputFile *of)
{
char name[16];
snprintf(name, sizeof(name), "mux%d:%s", of->index, of->format->name);
ff_thread_setname(name);
}
static void mux_thread_uninit(MuxThreadContext *mt)
{
av_packet_free(&mt->pkt);
av_packet_free(&mt->fix_sub_duration_pkt);
memset(mt, 0, sizeof(*mt));
}
static int mux_thread_init(MuxThreadContext *mt)
{
memset(mt, 0, sizeof(*mt));
mt->pkt = av_packet_alloc();
if (!mt->pkt)
goto fail;
mt->fix_sub_duration_pkt = av_packet_alloc();
if (!mt->fix_sub_duration_pkt)
goto fail;
return 0;
fail:
mux_thread_uninit(mt);
return AVERROR(ENOMEM);
}
void *muxer_thread(void *arg)
{
Muxer *mux = arg;
OutputFile *of = &mux->of;
MuxThreadContext mt;
int ret = 0;
ret = mux_thread_init(&mt);
if (ret < 0)
goto finish;
thread_set_name(of);
while (1) {
OutputStream *ost;
int stream_idx, stream_eof = 0;
ret = sch_mux_receive(mux->sch, of->index, mt.pkt);
stream_idx = mt.pkt->stream_index;
if (stream_idx < 0) {
av_log(mux, AV_LOG_VERBOSE, "All streams finished\n");
ret = 0;
break;
}
ost = of->streams[mux->sch_stream_idx[stream_idx]];
mt.pkt->stream_index = ost->index;
ret = mux_packet_filter(mux, &mt, ost, ret < 0 ? NULL : mt.pkt, &stream_eof);
av_packet_unref(mt.pkt);
if (ret == AVERROR_EOF) {
if (stream_eof) {
sch_mux_receive_finish(mux->sch, of->index, stream_idx);
} else {
av_log(mux, AV_LOG_VERBOSE, "Muxer returned EOF\n");
ret = 0;
break;
}
} else if (ret < 0) {
av_log(mux, AV_LOG_ERROR, "Error muxing a packet\n");
break;
}
}
finish:
mux_thread_uninit(&mt);
return (void*)(intptr_t)ret;
}
static int of_streamcopy(OutputStream *ost, AVPacket *pkt)
{
OutputFile *of = output_files[ost->file_index];
MuxStream *ms = ms_from_ost(ost);
DemuxPktData *pd = pkt->opaque_ref ? (DemuxPktData*)pkt->opaque_ref->data : NULL;
int64_t dts = pd ? pd->dts_est : AV_NOPTS_VALUE;
int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
int64_t ts_offset;
if (of->recording_time != INT64_MAX &&
dts >= of->recording_time + start_time)
return AVERROR_EOF;
if (!ms->streamcopy_started && !(pkt->flags & AV_PKT_FLAG_KEY) &&
!ms->copy_initial_nonkeyframes)
return AVERROR(EAGAIN);
if (!ms->streamcopy_started) {
if (!ms->copy_prior_start &&
(pkt->pts == AV_NOPTS_VALUE ?
dts < ms->ts_copy_start :
pkt->pts < av_rescale_q(ms->ts_copy_start, AV_TIME_BASE_Q, pkt->time_base)))
return AVERROR(EAGAIN);
if (of->start_time != AV_NOPTS_VALUE && dts < of->start_time)
return AVERROR(EAGAIN);
}
ts_offset = av_rescale_q(start_time, AV_TIME_BASE_Q, pkt->time_base);
if (pkt->pts != AV_NOPTS_VALUE)
pkt->pts -= ts_offset;
if (pkt->dts == AV_NOPTS_VALUE) {
pkt->dts = av_rescale_q(dts, AV_TIME_BASE_Q, pkt->time_base);
} else if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
pkt->pts = pkt->dts - ts_offset;
}
pkt->dts -= ts_offset;
ms->streamcopy_started = 1;
return 0;
}
int print_sdp(const char *filename);
int print_sdp(const char *filename)
{
char sdp[16384];
int i;
int j, ret;
AVIOContext *sdp_pb;
AVFormatContext **avc;
avc = av_malloc_array(nb_output_files, sizeof(*avc));
if (!avc)
return AVERROR(ENOMEM);
for (i = 0, j = 0; i < nb_output_files; i++) {
if (!strcmp(output_files[i]->format->name, "rtp")) {
avc[j] = mux_from_of(output_files[i])->fc;
j++;
}
}
if (!j) {
av_log(NULL, AV_LOG_ERROR, "No output streams in the SDP.\n");
ret = AVERROR(EINVAL);
goto fail;
}
ret = av_sdp_create(avc, j, sdp, sizeof(sdp));
if (ret < 0)
goto fail;
if (!filename) {
printf("SDP:\n%s\n", sdp);
fflush(stdout);
} else {
ret = avio_open2(&sdp_pb, filename, AVIO_FLAG_WRITE, &int_cb, NULL);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Failed to open sdp file '%s'\n", filename);
goto fail;
}
avio_print(sdp_pb, sdp);
avio_closep(&sdp_pb);
}
fail:
av_freep(&avc);
return ret;
}
int mux_check_init(void *arg)
{
Muxer *mux = arg;
OutputFile *of = &mux->of;
AVFormatContext *fc = mux->fc;
int ret;
ret = avformat_write_header(fc, &mux->opts);
if (ret < 0) {
av_log(mux, AV_LOG_ERROR, "Could not write header (incorrect codec "
"parameters ?): %s\n", av_err2str(ret));
return ret;
}
//assert_avoptions(of->opts);
mux->header_written = 1;
av_dump_format(fc, of->index, fc->url, 1);
atomic_fetch_add(&nb_output_dumped, 1);
return 0;
}
static int bsf_init(MuxStream *ms)
{
OutputStream *ost = &ms->ost;
AVBSFContext *ctx = ms->bsf_ctx;
int ret;
if (!ctx)
return avcodec_parameters_copy(ost->st->codecpar, ost->par_in);
ret = avcodec_parameters_copy(ctx->par_in, ost->par_in);
if (ret < 0)
return ret;
ctx->time_base_in = ost->st->time_base;
ret = av_bsf_init(ctx);
if (ret < 0) {
av_log(ms, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n",
ctx->filter->name);
return ret;
}
ret = avcodec_parameters_copy(ost->st->codecpar, ctx->par_out);
if (ret < 0)
return ret;
ost->st->time_base = ctx->time_base_out;
ms->bsf_pkt = av_packet_alloc();
if (!ms->bsf_pkt)
return AVERROR(ENOMEM);
return 0;
}
int of_stream_init(OutputFile *of, OutputStream *ost)
{
Muxer *mux = mux_from_of(of);
MuxStream *ms = ms_from_ost(ost);
int ret;
/* initialize bitstream filters for the output stream
* needs to be done here, because the codec id for streamcopy is not
* known until now */
ret = bsf_init(ms);
if (ret < 0)
return ret;
if (ms->stream_duration) {
ost->st->duration = av_rescale_q(ms->stream_duration, ms->stream_duration_tb,
ost->st->time_base);
}
if (ms->sch_idx >= 0)
return sch_mux_stream_ready(mux->sch, of->index, ms->sch_idx);
return 0;
}
static int check_written(OutputFile *of)
{
int64_t total_packets_written = 0;
int pass1_used = 1;
int ret = 0;
for (int i = 0; i < of->nb_streams; i++) {
OutputStream *ost = of->streams[i];
uint64_t packets_written = atomic_load(&ost->packets_written);
total_packets_written += packets_written;
if (ost->enc_ctx &&
(ost->enc_ctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2))
!= AV_CODEC_FLAG_PASS1)
pass1_used = 0;
if (!packets_written &&
(abort_on_flags & ABORT_ON_FLAG_EMPTY_OUTPUT_STREAM)) {
av_log(ost, AV_LOG_FATAL, "Empty output stream\n");
ret = err_merge(ret, AVERROR(EINVAL));
}
}
if (!total_packets_written) {
int level = AV_LOG_WARNING;
if (abort_on_flags & ABORT_ON_FLAG_EMPTY_OUTPUT) {
ret = err_merge(ret, AVERROR(EINVAL));
level = AV_LOG_FATAL;
}
av_log(of, level, "Output file is empty, nothing was encoded%s\n",
pass1_used ? "" : "(check -ss / -t / -frames parameters if used)");
}
return ret;
}
static void mux_final_stats(Muxer *mux)
{
OutputFile *of = &mux->of;
uint64_t total_packets = 0, total_size = 0;
uint64_t video_size = 0, audio_size = 0, subtitle_size = 0,
extra_size = 0, other_size = 0;
uint8_t overhead[16] = "unknown";
int64_t file_size = of_filesize(of);
av_log(of, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
of->index, of->url);
for (int j = 0; j < of->nb_streams; j++) {
OutputStream *ost = of->streams[j];
MuxStream *ms = ms_from_ost(ost);
const AVCodecParameters *par = ost->st->codecpar;
const enum AVMediaType type = par->codec_type;
const uint64_t s = ms->data_size_mux;
switch (type) {
case AVMEDIA_TYPE_VIDEO: video_size += s; break;
case AVMEDIA_TYPE_AUDIO: audio_size += s; break;
case AVMEDIA_TYPE_SUBTITLE: subtitle_size += s; break;
default: other_size += s; break;
}
extra_size += par->extradata_size;
total_size += s;
total_packets += atomic_load(&ost->packets_written);
av_log(of, AV_LOG_VERBOSE, " Output stream #%d:%d (%s): ",
of->index, j, av_get_media_type_string(type));
if (ost->enc) {
av_log(of, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
ost->frames_encoded);
if (type == AVMEDIA_TYPE_AUDIO)
av_log(of, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
av_log(of, AV_LOG_VERBOSE, "; ");
}
av_log(of, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
atomic_load(&ost->packets_written), s);
av_log(of, AV_LOG_VERBOSE, "\n");
}
av_log(of, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
total_packets, total_size);
if (total_size && file_size > 0 && file_size >= total_size) {
snprintf(overhead, sizeof(overhead), "%f%%",
100.0 * (file_size - total_size) / total_size);
}
av_log(of, AV_LOG_INFO,
"video:%1.0fkB audio:%1.0fkB subtitle:%1.0fkB other streams:%1.0fkB "
"global headers:%1.0fkB muxing overhead: %s\n",
video_size / 1024.0,
audio_size / 1024.0,
subtitle_size / 1024.0,
other_size / 1024.0,
extra_size / 1024.0,
overhead);
}
int of_write_trailer(OutputFile *of)
{
Muxer *mux = mux_from_of(of);
AVFormatContext *fc = mux->fc;
int ret, mux_result = 0;
if (!mux->header_written) {
av_log(mux, AV_LOG_ERROR,
"Nothing was written into output file, because "
"at least one of its streams received no packets.\n");
return AVERROR(EINVAL);
}
ret = av_write_trailer(fc);
if (ret < 0) {
av_log(mux, AV_LOG_ERROR, "Error writing trailer: %s\n", av_err2str(ret));
mux_result = err_merge(mux_result, ret);
}
mux->last_filesize = filesize(fc->pb);
if (!(of->format->flags & AVFMT_NOFILE)) {
ret = avio_closep(&fc->pb);
if (ret < 0) {
av_log(mux, AV_LOG_ERROR, "Error closing file: %s\n", av_err2str(ret));
mux_result = err_merge(mux_result, ret);
}
}
mux_final_stats(mux);
// check whether anything was actually written
ret = check_written(of);
mux_result = err_merge(mux_result, ret);
return mux_result;
}
static void ost_free(OutputStream **post)
{
OutputStream *ost = *post;
MuxStream *ms;
if (!ost)
return;
ms = ms_from_ost(ost);
enc_free(&ost->enc);
if (ost->logfile) {
if (fclose(ost->logfile))
av_log(ms, AV_LOG_ERROR,
"Error closing logfile, loss of information possible: %s\n",
av_err2str(AVERROR(errno)));
ost->logfile = NULL;
}
avcodec_parameters_free(&ost->par_in);
av_bsf_free(&ms->bsf_ctx);
av_packet_free(&ms->bsf_pkt);
av_packet_free(&ms->pkt);
av_dict_free(&ost->encoder_opts);
av_freep(&ost->kf.pts);
av_expr_free(ost->kf.pexpr);
av_freep(&ost->logfile_prefix);
av_freep(&ost->apad);
#if FFMPEG_OPT_MAP_CHANNEL
av_freep(&ost->audio_channels_map);
ost->audio_channels_mapped = 0;
#endif
av_dict_free(&ost->sws_dict);
av_dict_free(&ost->swr_opts);
if (ost->enc_ctx)
av_freep(&ost->enc_ctx->stats_in);
avcodec_free_context(&ost->enc_ctx);
for (int i = 0; i < ost->enc_stats_pre.nb_components; i++)
av_freep(&ost->enc_stats_pre.components[i].str);
av_freep(&ost->enc_stats_pre.components);
for (int i = 0; i < ost->enc_stats_post.nb_components; i++)
av_freep(&ost->enc_stats_post.components[i].str);
av_freep(&ost->enc_stats_post.components);
for (int i = 0; i < ms->stats.nb_components; i++)
av_freep(&ms->stats.components[i].str);
av_freep(&ms->stats.components);
av_freep(post);
}
static void fc_close(AVFormatContext **pfc)
{
AVFormatContext *fc = *pfc;
if (!fc)
return;
if (!(fc->oformat->flags & AVFMT_NOFILE))
avio_closep(&fc->pb);
avformat_free_context(fc);
*pfc = NULL;
}
void of_free(OutputFile **pof)
{
OutputFile *of = *pof;
Muxer *mux;
if (!of)
return;
mux = mux_from_of(of);
sq_free(&of->sq_encode);
sq_free(&mux->sq_mux);
for (int i = 0; i < of->nb_streams; i++)
ost_free(&of->streams[i]);
av_freep(&of->streams);
av_freep(&mux->sch_stream_idx);
av_dict_free(&mux->opts);
av_packet_free(&mux->sq_pkt);
fc_close(&mux->fc);
av_freep(pof);
}
int64_t of_filesize(OutputFile *of)
{
Muxer *mux = mux_from_of(of);
return atomic_load(&mux->last_filesize);
}
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