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ffmpeg/libavformat/mux.c
Andreas Rheinhardt 790f793844 avutil/common: Don't auto-include mem.h 
There are lots of files that don't need it: The number of object
files that actually need it went down from 2011 to 884 here.

Keep it for external users in order to not cause breakages.

Also improve the other headers a bit while just at it.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2024-03-31 00:08:43 +01:00

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/*
* muxing functions for use within FFmpeg
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
*
* 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 "avformat.h"
#include "internal.h"
#include "mux.h"
#include "version.h"
#include "libavcodec/bsf.h"
#include "libavcodec/codec_desc.h"
#include "libavcodec/internal.h"
#include "libavcodec/packet_internal.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/dict.h"
#include "libavutil/timestamp.h"
#include "libavutil/avassert.h"
#include "libavutil/frame.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
/**
* @file
* muxing functions for use within libavformat
*/
/* fraction handling */
/**
* f = val + (num / den) + 0.5.
*
* 'num' is normalized so that it is such as 0 <= num < den.
*
* @param f fractional number
* @param val integer value
* @param num must be >= 0
* @param den must be >= 1
*/
static void frac_init(FFFrac *f, int64_t val, int64_t num, int64_t den)
{
num += (den >> 1);
if (num >= den) {
val += num / den;
num = num % den;
}
f->val = val;
f->num = num;
f->den = den;
}
/**
* Fractional addition to f: f = f + (incr / f->den).
*
* @param f fractional number
* @param incr increment, can be positive or negative
*/
static void frac_add(FFFrac *f, int64_t incr)
{
int64_t num, den;
num = f->num + incr;
den = f->den;
if (num < 0) {
f->val += num / den;
num = num % den;
if (num < 0) {
num += den;
f->val--;
}
} else if (num >= den) {
f->val += num / den;
num = num % den;
}
f->num = num;
}
int avformat_alloc_output_context2(AVFormatContext **avctx, const AVOutputFormat *oformat,
const char *format, const char *filename)
{
AVFormatContext *s = avformat_alloc_context();
int ret = 0;
*avctx = NULL;
if (!s)
goto nomem;
if (!oformat) {
if (format) {
oformat = av_guess_format(format, NULL, NULL);
if (!oformat) {
av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not known.\n", format);
ret = AVERROR(EINVAL);
goto error;
}
} else {
oformat = av_guess_format(NULL, filename, NULL);
if (!oformat) {
ret = AVERROR(EINVAL);
av_log(s, AV_LOG_ERROR,
"Unable to choose an output format for '%s'; "
"use a standard extension for the filename or specify "
"the format manually.\n", filename);
goto error;
}
}
}
s->oformat = oformat;
if (ffofmt(s->oformat)->priv_data_size > 0) {
s->priv_data = av_mallocz(ffofmt(s->oformat)->priv_data_size);
if (!s->priv_data)
goto nomem;
if (s->oformat->priv_class) {
*(const AVClass**)s->priv_data= s->oformat->priv_class;
av_opt_set_defaults(s->priv_data);
}
} else
s->priv_data = NULL;
if (filename) {
if (!(s->url = av_strdup(filename)))
goto nomem;
}
*avctx = s;
return 0;
nomem:
av_log(s, AV_LOG_ERROR, "Out of memory\n");
ret = AVERROR(ENOMEM);
error:
avformat_free_context(s);
return ret;
}
static int validate_codec_tag(const AVFormatContext *s, const AVStream *st)
{
const AVCodecTag *avctag;
enum AVCodecID id = AV_CODEC_ID_NONE;
unsigned uppercase_tag = ff_toupper4(st->codecpar->codec_tag);
int64_t tag = -1;
/**
* Check that tag + id is in the table
* If neither is in the table -> OK
* If tag is in the table with another id -> FAIL
* If id is in the table with another tag -> FAIL unless strict < normal
*/
for (int n = 0; s->oformat->codec_tag[n]; n++) {
avctag = s->oformat->codec_tag[n];
while (avctag->id != AV_CODEC_ID_NONE) {
if (ff_toupper4(avctag->tag) == uppercase_tag) {
id = avctag->id;
if (id == st->codecpar->codec_id)
return 1;
}
if (avctag->id == st->codecpar->codec_id)
tag = avctag->tag;
avctag++;
}
}
if (id != AV_CODEC_ID_NONE)
return 0;
if (tag >= 0 && (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
return 0;
return 1;
}
static int init_muxer(AVFormatContext *s, AVDictionary **options)
{
FFFormatContext *const si = ffformatcontext(s);
AVDictionary *tmp = NULL;
const FFOutputFormat *of = ffofmt(s->oformat);
AVDictionaryEntry *e;
static const unsigned default_codec_offsets[] = {
[AVMEDIA_TYPE_VIDEO] = offsetof(AVOutputFormat, video_codec),
[AVMEDIA_TYPE_AUDIO] = offsetof(AVOutputFormat, audio_codec),
[AVMEDIA_TYPE_SUBTITLE] = offsetof(AVOutputFormat, subtitle_codec),
};
unsigned nb_type[FF_ARRAY_ELEMS(default_codec_offsets)] = { 0 };
int ret = 0;
if (options)
av_dict_copy(&tmp, *options, 0);
if ((ret = av_opt_set_dict(s, &tmp)) < 0)
goto fail;
if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
(ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
goto fail;
if (!s->url && !(s->url = av_strdup(""))) {
ret = AVERROR(ENOMEM);
goto fail;
}
// some sanity checks
if (s->nb_streams == 0 && !(of->p.flags & AVFMT_NOSTREAMS)) {
av_log(s, AV_LOG_ERROR, "No streams to mux were specified\n");
ret = AVERROR(EINVAL);
goto fail;
}
for (unsigned i = 0; i < s->nb_streams; i++) {
AVStream *const st = s->streams[i];
FFStream *const sti = ffstream(st);
AVCodecParameters *const par = st->codecpar;
const AVCodecDescriptor *desc;
if (!st->time_base.num) {
/* fall back on the default timebase values */
if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->sample_rate)
avpriv_set_pts_info(st, 64, 1, par->sample_rate);
else
avpriv_set_pts_info(st, 33, 1, 90000);
}
switch (par->codec_type) {
case AVMEDIA_TYPE_AUDIO:
if (par->sample_rate <= 0) {
av_log(s, AV_LOG_ERROR, "sample rate not set\n");
ret = AVERROR(EINVAL);
goto fail;
}
if (!par->block_align)
par->block_align = par->ch_layout.nb_channels *
av_get_bits_per_sample(par->codec_id) >> 3;
break;
case AVMEDIA_TYPE_VIDEO:
if ((par->width <= 0 || par->height <= 0) &&
!(of->p.flags & AVFMT_NODIMENSIONS)) {
av_log(s, AV_LOG_ERROR, "dimensions not set\n");
ret = AVERROR(EINVAL);
goto fail;
}
if (av_cmp_q(st->sample_aspect_ratio, par->sample_aspect_ratio)
&& fabs(av_q2d(st->sample_aspect_ratio) - av_q2d(par->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
) {
if (st->sample_aspect_ratio.num != 0 &&
st->sample_aspect_ratio.den != 0 &&
par->sample_aspect_ratio.num != 0 &&
par->sample_aspect_ratio.den != 0) {
av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer "
"(%d/%d) and encoder layer (%d/%d)\n",
st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
par->sample_aspect_ratio.num,
par->sample_aspect_ratio.den);
ret = AVERROR(EINVAL);
goto fail;
}
}
break;
}
if (of->flags_internal & (FF_OFMT_FLAG_MAX_ONE_OF_EACH | FF_OFMT_FLAG_ONLY_DEFAULT_CODECS)) {
enum AVCodecID default_codec_id = AV_CODEC_ID_NONE;
unsigned nb;
if ((unsigned)par->codec_type < FF_ARRAY_ELEMS(default_codec_offsets)) {
nb = ++nb_type[par->codec_type];
if (default_codec_offsets[par->codec_type])
default_codec_id = *(const enum AVCodecID*)((const char*)of + default_codec_offsets[par->codec_type]);
}
if (of->flags_internal & FF_OFMT_FLAG_ONLY_DEFAULT_CODECS &&
default_codec_id != AV_CODEC_ID_NONE && par->codec_id != default_codec_id) {
av_log(s, AV_LOG_ERROR, "%s muxer supports only codec %s for type %s\n",
of->p.name, avcodec_get_name(default_codec_id), av_get_media_type_string(par->codec_type));
ret = AVERROR(EINVAL);
goto fail;
} else if (default_codec_id == AV_CODEC_ID_NONE ||
(of->flags_internal & FF_OFMT_FLAG_MAX_ONE_OF_EACH && nb > 1)) {
const char *type = av_get_media_type_string(par->codec_type);
av_log(s, AV_LOG_ERROR, "%s muxer does not support %s stream of type %s\n",
of->p.name, default_codec_id == AV_CODEC_ID_NONE ? "any" : "more than one",
type ? type : "unknown");
ret = AVERROR(EINVAL);
goto fail;
}
}
#if FF_API_AVSTREAM_SIDE_DATA
FF_DISABLE_DEPRECATION_WARNINGS
/* if the caller is using the deprecated AVStream side_data API,
* copy its contents to AVStream.codecpar, giving it priority
over existing side data in the latter */
for (int i = 0; i < st->nb_side_data; i++) {
const AVPacketSideData *sd_src = &st->side_data[i];
AVPacketSideData *sd_dst;
sd_dst = av_packet_side_data_new(&st->codecpar->coded_side_data,
&st->codecpar->nb_coded_side_data,
sd_src->type, sd_src->size, 0);
if (!sd_dst) {
ret = AVERROR(ENOMEM);
goto fail;
}
memcpy(sd_dst->data, sd_src->data, sd_src->size);
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif
desc = avcodec_descriptor_get(par->codec_id);
if (desc && desc->props & AV_CODEC_PROP_REORDER)
sti->reorder = 1;
sti->is_intra_only = ff_is_intra_only(par->codec_id);
if (of->p.codec_tag) {
if ( par->codec_tag
&& par->codec_id == AV_CODEC_ID_RAWVIDEO
&& ( av_codec_get_tag(of->p.codec_tag, par->codec_id) == 0
|| av_codec_get_tag(of->p.codec_tag, par->codec_id) == MKTAG('r', 'a', 'w', ' '))
&& !validate_codec_tag(s, st)) {
// the current rawvideo encoding system ends up setting
// the wrong codec_tag for avi/mov, we override it here
par->codec_tag = 0;
}
if (par->codec_tag) {
if (!validate_codec_tag(s, st)) {
const uint32_t otag = av_codec_get_tag(s->oformat->codec_tag, par->codec_id);
av_log(s, AV_LOG_ERROR,
"Tag %s incompatible with output codec id '%d' (%s)\n",
av_fourcc2str(par->codec_tag), par->codec_id, av_fourcc2str(otag));
ret = AVERROR_INVALIDDATA;
goto fail;
}
} else
par->codec_tag = av_codec_get_tag(of->p.codec_tag, par->codec_id);
}
if (par->codec_type != AVMEDIA_TYPE_ATTACHMENT &&
par->codec_id != AV_CODEC_ID_SMPTE_2038)
si->nb_interleaved_streams++;
}
si->interleave_packet = of->interleave_packet;
if (!si->interleave_packet)
si->interleave_packet = si->nb_interleaved_streams > 1 ?
ff_interleave_packet_per_dts :
ff_interleave_packet_passthrough;
if (!s->priv_data && of->priv_data_size > 0) {
s->priv_data = av_mallocz(of->priv_data_size);
if (!s->priv_data) {
ret = AVERROR(ENOMEM);
goto fail;
}
if (of->p.priv_class) {
*(const AVClass **)s->priv_data = of->p.priv_class;
av_opt_set_defaults(s->priv_data);
if ((ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
goto fail;
}
}
/* set muxer identification string */
if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
} else {
av_dict_set(&s->metadata, "encoder", NULL, 0);
}
for (e = NULL; e = av_dict_get(s->metadata, "encoder-", e, AV_DICT_IGNORE_SUFFIX); ) {
av_dict_set(&s->metadata, e->key, NULL, 0);
}
if (options) {
av_dict_free(options);
*options = tmp;
}
if (of->init) {
if ((ret = of->init(s)) < 0) {
if (of->deinit)
of->deinit(s);
return ret;
}
return ret == 0;
}
return 0;
fail:
av_dict_free(&tmp);
return ret;
}
static int init_pts(AVFormatContext *s)
{
FFFormatContext *const si = ffformatcontext(s);
/* init PTS generation */
for (unsigned i = 0; i < s->nb_streams; i++) {
AVStream *const st = s->streams[i];
FFStream *const sti = ffstream(st);
int64_t den = AV_NOPTS_VALUE;
switch (st->codecpar->codec_type) {
case AVMEDIA_TYPE_AUDIO:
den = (int64_t)st->time_base.num * st->codecpar->sample_rate;
break;
case AVMEDIA_TYPE_VIDEO:
den = (int64_t)st->time_base.num * st->time_base.den;
break;
default:
break;
}
if (den != AV_NOPTS_VALUE) {
if (den <= 0)
return AVERROR_INVALIDDATA;
frac_init(&sti->priv_pts, 0, 0, den);
}
}
si->avoid_negative_ts_status = AVOID_NEGATIVE_TS_UNKNOWN;
if (s->avoid_negative_ts < 0) {
av_assert2(s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO);
if (s->oformat->flags & (AVFMT_TS_NEGATIVE | AVFMT_NOTIMESTAMPS)) {
s->avoid_negative_ts = AVFMT_AVOID_NEG_TS_DISABLED;
si->avoid_negative_ts_status = AVOID_NEGATIVE_TS_DISABLED;
} else
s->avoid_negative_ts = AVFMT_AVOID_NEG_TS_MAKE_NON_NEGATIVE;
} else if (s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_DISABLED)
si->avoid_negative_ts_status = AVOID_NEGATIVE_TS_DISABLED;
return 0;
}
static void flush_if_needed(AVFormatContext *s)
{
if (s->pb && s->pb->error >= 0) {
if (s->flush_packets == 1 || s->flags & AVFMT_FLAG_FLUSH_PACKETS)
avio_flush(s->pb);
else if (s->flush_packets && !(s->oformat->flags & AVFMT_NOFILE))
avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT);
}
}
static void deinit_muxer(AVFormatContext *s)
{
FFFormatContext *const si = ffformatcontext(s);
const FFOutputFormat *const of = ffofmt(s->oformat);
if (of && of->deinit && si->initialized)
of->deinit(s);
si->initialized =
si->streams_initialized = 0;
}
int avformat_init_output(AVFormatContext *s, AVDictionary **options)
{
FFFormatContext *const si = ffformatcontext(s);
int ret = 0;
if ((ret = init_muxer(s, options)) < 0)
return ret;
si->initialized = 1;
si->streams_initialized = ret;
if (ffofmt(s->oformat)->init && ret) {
if ((ret = init_pts(s)) < 0)
return ret;
return AVSTREAM_INIT_IN_INIT_OUTPUT;
}
return AVSTREAM_INIT_IN_WRITE_HEADER;
}
int avformat_write_header(AVFormatContext *s, AVDictionary **options)
{
FFFormatContext *const si = ffformatcontext(s);
int already_initialized = si->initialized;
int streams_already_initialized = si->streams_initialized;
int ret = 0;
if (!already_initialized)
if ((ret = avformat_init_output(s, options)) < 0)
return ret;
if (ffofmt(s->oformat)->write_header) {
if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_HEADER);
ret = ffofmt(s->oformat)->write_header(s);
if (ret >= 0 && s->pb && s->pb->error < 0)
ret = s->pb->error;
if (ret < 0)
goto fail;
flush_if_needed(s);
}
if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_UNKNOWN);
if (!si->streams_initialized) {
if ((ret = init_pts(s)) < 0)
goto fail;
}
return streams_already_initialized;
fail:
deinit_muxer(s);
return ret;
}
#define AV_PKT_FLAG_UNCODED_FRAME 0x2000
#if FF_API_COMPUTE_PKT_FIELDS2
FF_DISABLE_DEPRECATION_WARNINGS
//FIXME merge with compute_pkt_fields
static int compute_muxer_pkt_fields(AVFormatContext *s, AVStream *st, AVPacket *pkt)
{
FFFormatContext *const si = ffformatcontext(s);
FFStream *const sti = ffstream(st);
int delay = st->codecpar->video_delay;
int frame_size;
if (!si->missing_ts_warning &&
!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
(!(st->disposition & AV_DISPOSITION_ATTACHED_PIC) || (st->disposition & AV_DISPOSITION_TIMED_THUMBNAILS)) &&
(pkt->pts == AV_NOPTS_VALUE || pkt->dts == AV_NOPTS_VALUE)) {
av_log(s, AV_LOG_WARNING,
"Timestamps are unset in a packet for stream %d. "
"This is deprecated and will stop working in the future. "
"Fix your code to set the timestamps properly\n", st->index);
si->missing_ts_warning = 1;
}
if (s->debug & FF_FDEBUG_TS)
av_log(s, AV_LOG_DEBUG, "compute_muxer_pkt_fields: pts:%s dts:%s cur_dts:%s b:%d size:%d st:%d\n",
av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(sti->cur_dts), delay, pkt->size, pkt->stream_index);
if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay == 0)
pkt->pts = pkt->dts;
//XXX/FIXME this is a temporary hack until all encoders output pts
if ((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay) {
static int warned;
if (!warned) {
av_log(s, AV_LOG_WARNING, "Encoder did not produce proper pts, making some up.\n");
warned = 1;
}
pkt->dts =
// pkt->pts= st->cur_dts;
pkt->pts = sti->priv_pts.val;
}
//calculate dts from pts
if (pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
sti->pts_buffer[0] = pkt->pts;
for (int i = 1; i < delay + 1 && sti->pts_buffer[i] == AV_NOPTS_VALUE; i++)
sti->pts_buffer[i] = pkt->pts + (i - delay - 1) * pkt->duration;
for (int i = 0; i<delay && sti->pts_buffer[i] > sti->pts_buffer[i + 1]; i++)
FFSWAP(int64_t, sti->pts_buffer[i], sti->pts_buffer[i + 1]);
pkt->dts = sti->pts_buffer[0];
}
if (sti->cur_dts && sti->cur_dts != AV_NOPTS_VALUE &&
((!(s->oformat->flags & AVFMT_TS_NONSTRICT) &&
st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE &&
st->codecpar->codec_type != AVMEDIA_TYPE_DATA &&
sti->cur_dts >= pkt->dts) || sti->cur_dts > pkt->dts)) {
av_log(s, AV_LOG_ERROR,
"Application provided invalid, non monotonically increasing dts to muxer in stream %d: %s >= %s\n",
st->index, av_ts2str(sti->cur_dts), av_ts2str(pkt->dts));
return AVERROR(EINVAL);
}
if (pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts) {
av_log(s, AV_LOG_ERROR,
"pts (%s) < dts (%s) in stream %d\n",
av_ts2str(pkt->pts), av_ts2str(pkt->dts),
st->index);
return AVERROR(EINVAL);
}
if (s->debug & FF_FDEBUG_TS)
av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%s dts2:%s\n",
av_ts2str(pkt->pts), av_ts2str(pkt->dts));
sti->cur_dts = pkt->dts;
sti->priv_pts.val = pkt->dts;
/* update pts */
switch (st->codecpar->codec_type) {
case AVMEDIA_TYPE_AUDIO:
frame_size = (pkt->flags & AV_PKT_FLAG_UNCODED_FRAME) ?
(*(AVFrame **)pkt->data)->nb_samples :
av_get_audio_frame_duration2(st->codecpar, pkt->size);
/* HACK/FIXME, we skip the initial 0 size packets as they are most
* likely equal to the encoder delay, but it would be better if we
* had the real timestamps from the encoder */
if (frame_size >= 0 && (pkt->size || sti->priv_pts.num != sti->priv_pts.den >> 1 || sti->priv_pts.val)) {
frac_add(&sti->priv_pts, (int64_t)st->time_base.den * frame_size);
}
break;
case AVMEDIA_TYPE_VIDEO:
frac_add(&sti->priv_pts, (int64_t)st->time_base.den * st->time_base.num);
break;
}
return 0;
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif
static void guess_pkt_duration(AVFormatContext *s, AVStream *st, AVPacket *pkt)
{
if (pkt->duration < 0 && st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE) {
av_log(s, AV_LOG_WARNING, "Packet with invalid duration %"PRId64" in stream %d\n",
pkt->duration, pkt->stream_index);
pkt->duration = 0;
}
if (pkt->duration)
return;
switch (st->codecpar->codec_type) {
case AVMEDIA_TYPE_VIDEO:
if (st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0) {
pkt->duration = av_rescale_q(1, av_inv_q(st->avg_frame_rate),
st->time_base);
} else if (st->time_base.num * 1000LL > st->time_base.den)
pkt->duration = 1;
break;
case AVMEDIA_TYPE_AUDIO: {
int frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
if (frame_size && st->codecpar->sample_rate) {
pkt->duration = av_rescale_q(frame_size,
(AVRational){1, st->codecpar->sample_rate},
st->time_base);
}
break;
}
}
}
static void handle_avoid_negative_ts(FFFormatContext *si, FFStream *sti,
AVPacket *pkt)
{
AVFormatContext *const s = &si->pub;
int64_t offset;
if (!AVOID_NEGATIVE_TS_ENABLED(si->avoid_negative_ts_status))
return;
if (si->avoid_negative_ts_status == AVOID_NEGATIVE_TS_UNKNOWN) {
int use_pts = si->avoid_negative_ts_use_pts;
int64_t ts = use_pts ? pkt->pts : pkt->dts;
AVRational tb = sti->pub.time_base;
if (ts == AV_NOPTS_VALUE)
return;
ts -= sti->lowest_ts_allowed;
/* Peek into the muxing queue to improve our estimate
* of the lowest timestamp if av_interleaved_write_frame() is used. */
for (const PacketListEntry *pktl = si->packet_buffer.head;
pktl; pktl = pktl->next) {
AVRational cmp_tb = s->streams[pktl->pkt.stream_index]->time_base;
int64_t cmp_ts = use_pts ? pktl->pkt.pts : pktl->pkt.dts;
if (cmp_ts == AV_NOPTS_VALUE)
continue;
cmp_ts -= ffstream(s->streams[pktl->pkt.stream_index])->lowest_ts_allowed;
if (s->output_ts_offset)
cmp_ts += av_rescale_q(s->output_ts_offset, AV_TIME_BASE_Q, cmp_tb);
if (av_compare_ts(cmp_ts, cmp_tb, ts, tb) < 0) {
ts = cmp_ts;
tb = cmp_tb;
}
}
if (ts < 0 ||
ts > 0 && s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
for (unsigned i = 0; i < s->nb_streams; i++) {
AVStream *const st2 = s->streams[i];
FFStream *const sti2 = ffstream(st2);
sti2->mux_ts_offset = av_rescale_q_rnd(-ts, tb,
st2->time_base,
AV_ROUND_UP);
}
}
si->avoid_negative_ts_status = AVOID_NEGATIVE_TS_KNOWN;
}
offset = sti->mux_ts_offset;
if (pkt->dts != AV_NOPTS_VALUE)
pkt->dts += offset;
if (pkt->pts != AV_NOPTS_VALUE)
pkt->pts += offset;
if (si->avoid_negative_ts_use_pts) {
if (pkt->pts != AV_NOPTS_VALUE && pkt->pts < sti->lowest_ts_allowed) {
av_log(s, AV_LOG_WARNING, "failed to avoid negative "
"pts %s in stream %d.\n"
"Try -avoid_negative_ts 1 as a possible workaround.\n",
av_ts2str(pkt->pts),
pkt->stream_index
);
}
} else {
if (pkt->dts != AV_NOPTS_VALUE && pkt->dts < sti->lowest_ts_allowed) {
av_log(s, AV_LOG_WARNING,
"Packets poorly interleaved, failed to avoid negative "
"timestamp %s in stream %d.\n"
"Try -max_interleave_delta 0 as a possible workaround.\n",
av_ts2str(pkt->dts),
pkt->stream_index
);
}
}
}
/**
* Shift timestamps and call muxer; the original pts/dts are not kept.
*
* FIXME: this function should NEVER get undefined pts/dts beside when the
* AVFMT_NOTIMESTAMPS is set.
* Those additional safety checks should be dropped once the correct checks
* are set in the callers.
*/
static int write_packet(AVFormatContext *s, AVPacket *pkt)
{
FFFormatContext *const si = ffformatcontext(s);
AVStream *const st = s->streams[pkt->stream_index];
FFStream *const sti = ffstream(st);
int ret;
// If the timestamp offsetting below is adjusted, adjust
// ff_interleaved_peek similarly.
if (s->output_ts_offset) {
int64_t offset = av_rescale_q(s->output_ts_offset, AV_TIME_BASE_Q, st->time_base);
if (pkt->dts != AV_NOPTS_VALUE)
pkt->dts += offset;
if (pkt->pts != AV_NOPTS_VALUE)
pkt->pts += offset;
}
handle_avoid_negative_ts(si, sti, pkt);
if ((pkt->flags & AV_PKT_FLAG_UNCODED_FRAME)) {
AVFrame **frame = (AVFrame **)pkt->data;
av_assert0(pkt->size == sizeof(*frame));
ret = ffofmt(s->oformat)->write_uncoded_frame(s, pkt->stream_index, frame, 0);
} else {
ret = ffofmt(s->oformat)->write_packet(s, pkt);
}
if (s->pb && ret >= 0) {
flush_if_needed(s);
if (s->pb->error < 0)
ret = s->pb->error;
}
if (ret >= 0)
st->nb_frames++;
return ret;
}
static int check_packet(AVFormatContext *s, AVPacket *pkt)
{
if (pkt->stream_index < 0 || pkt->stream_index >= s->nb_streams) {
av_log(s, AV_LOG_ERROR, "Invalid packet stream index: %d\n",
pkt->stream_index);
return AVERROR(EINVAL);
}
if (s->streams[pkt->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
av_log(s, AV_LOG_ERROR, "Received a packet for an attachment stream.\n");
return AVERROR(EINVAL);
}
return 0;
}
static int prepare_input_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
{
FFStream *const sti = ffstream(st);
#if !FF_API_COMPUTE_PKT_FIELDS2
/* sanitize the timestamps */
if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
/* when there is no reordering (so dts is equal to pts), but
* only one of them is set, set the other as well */
if (!sti->reorder) {
if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE)
pkt->pts = pkt->dts;
if (pkt->dts == AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
pkt->dts = pkt->pts;
}
/* check that the timestamps are set */
if (pkt->pts == AV_NOPTS_VALUE || pkt->dts == AV_NOPTS_VALUE) {
av_log(s, AV_LOG_ERROR,
"Timestamps are unset in a packet for stream %d\n", st->index);
return AVERROR(EINVAL);
}
/* check that the dts are increasing (or at least non-decreasing,
* if the format allows it */
if (sti->cur_dts != AV_NOPTS_VALUE &&
((!(s->oformat->flags & AVFMT_TS_NONSTRICT) && sti->cur_dts >= pkt->dts) ||
sti->cur_dts > pkt->dts)) {
av_log(s, AV_LOG_ERROR,
"Application provided invalid, non monotonically increasing "
"dts to muxer in stream %d: %" PRId64 " >= %" PRId64 "\n",
st->index, sti->cur_dts, pkt->dts);
return AVERROR(EINVAL);
}
if (pkt->pts < pkt->dts) {
av_log(s, AV_LOG_ERROR, "pts %" PRId64 " < dts %" PRId64 " in stream %d\n",
pkt->pts, pkt->dts, st->index);
return AVERROR(EINVAL);
}
}
#endif
/* update flags */
if (sti->is_intra_only)
pkt->flags |= AV_PKT_FLAG_KEY;
if (!pkt->data && !pkt->side_data_elems) {
/* Such empty packets signal EOS for the BSF API; so sanitize
* the packet by allocating data of size 0 (+ padding). */
av_buffer_unref(&pkt->buf);
return av_packet_make_refcounted(pkt);
}
return 0;
}
#define CHUNK_START 0x1000
int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
int (*compare)(AVFormatContext *, const AVPacket *, const AVPacket *))
{
int ret;
FFFormatContext *const si = ffformatcontext(s);
PacketListEntry **next_point, *this_pktl;
AVStream *st = s->streams[pkt->stream_index];
FFStream *const sti = ffstream(st);
int chunked = s->max_chunk_size || s->max_chunk_duration;
this_pktl = av_malloc(sizeof(*this_pktl));
if (!this_pktl) {
av_packet_unref(pkt);
return AVERROR(ENOMEM);
}
if ((ret = av_packet_make_refcounted(pkt)) < 0) {
av_free(this_pktl);
av_packet_unref(pkt);
return ret;
}
av_packet_move_ref(&this_pktl->pkt, pkt);
pkt = &this_pktl->pkt;
if (sti->last_in_packet_buffer) {
next_point = &(sti->last_in_packet_buffer->next);
} else {
next_point = &si->packet_buffer.head;
}
if (chunked) {
uint64_t max= av_rescale_q_rnd(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base, AV_ROUND_UP);
sti->interleaver_chunk_size += pkt->size;
sti->interleaver_chunk_duration += pkt->duration;
if ( (s->max_chunk_size && sti->interleaver_chunk_size > s->max_chunk_size)
|| (max && sti->interleaver_chunk_duration > max)) {
sti->interleaver_chunk_size = 0;
pkt->flags |= CHUNK_START;
if (max && sti->interleaver_chunk_duration > max) {
int64_t syncoffset = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)*max/2;
int64_t syncto = av_rescale(pkt->dts + syncoffset, 1, max)*max - syncoffset;
sti->interleaver_chunk_duration += (pkt->dts - syncto)/8 - max;
} else
sti->interleaver_chunk_duration = 0;
}
}
if (*next_point) {
if (chunked && !(pkt->flags & CHUNK_START))
goto next_non_null;
if (compare(s, &si->packet_buffer.tail->pkt, pkt)) {
while ( *next_point
&& ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
|| !compare(s, &(*next_point)->pkt, pkt)))
next_point = &(*next_point)->next;
if (*next_point)
goto next_non_null;
} else {
next_point = &(si->packet_buffer.tail->next);
}
}
av_assert1(!*next_point);
si->packet_buffer.tail = this_pktl;
next_non_null:
this_pktl->next = *next_point;
sti->last_in_packet_buffer = *next_point = this_pktl;
return 0;
}
static int interleave_compare_dts(AVFormatContext *s, const AVPacket *next,
const AVPacket *pkt)
{
AVStream *st = s->streams[pkt->stream_index];
AVStream *st2 = s->streams[next->stream_index];
int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
st->time_base);
if (s->audio_preload) {
int preload = st ->codecpar->codec_type == AVMEDIA_TYPE_AUDIO;
int preload2 = st2->codecpar->codec_type == AVMEDIA_TYPE_AUDIO;
if (preload != preload2) {
int64_t ts, ts2;
preload *= s->audio_preload;
preload2 *= s->audio_preload;
ts = av_rescale_q(pkt ->dts, st ->time_base, AV_TIME_BASE_Q) - preload;
ts2= av_rescale_q(next->dts, st2->time_base, AV_TIME_BASE_Q) - preload2;
if (ts == ts2) {
ts = ((uint64_t)pkt ->dts*st ->time_base.num*AV_TIME_BASE - (uint64_t)preload *st ->time_base.den)*st2->time_base.den
- ((uint64_t)next->dts*st2->time_base.num*AV_TIME_BASE - (uint64_t)preload2*st2->time_base.den)*st ->time_base.den;
ts2 = 0;
}
comp = (ts2 > ts) - (ts2 < ts);
}
}
if (comp == 0)
return pkt->stream_index < next->stream_index;
return comp > 0;
}
int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *pkt,
int flush, int has_packet)
{
FFFormatContext *const si = ffformatcontext(s);
int stream_count = 0;
int noninterleaved_count = 0;
int ret;
int eof = flush;
if (has_packet) {
if ((ret = ff_interleave_add_packet(s, pkt, interleave_compare_dts)) < 0)
return ret;
}
for (unsigned i = 0; i < s->nb_streams; i++) {
const AVStream *const st = s->streams[i];
const FFStream *const sti = cffstream(st);
const AVCodecParameters *const par = st->codecpar;
if (sti->last_in_packet_buffer) {
++stream_count;
} else if (par->codec_type != AVMEDIA_TYPE_ATTACHMENT &&
par->codec_id != AV_CODEC_ID_VP8 &&
par->codec_id != AV_CODEC_ID_VP9 &&
par->codec_id != AV_CODEC_ID_SMPTE_2038) {
++noninterleaved_count;
}
}
if (si->nb_interleaved_streams == stream_count)
flush = 1;
if (s->max_interleave_delta > 0 &&
si->packet_buffer.head &&
si->packet_buffer.head->pkt.dts != AV_NOPTS_VALUE &&
!flush &&
si->nb_interleaved_streams == stream_count+noninterleaved_count
) {
AVPacket *const top_pkt = &si->packet_buffer.head->pkt;
int64_t delta_dts = INT64_MIN;
int64_t top_dts = av_rescale_q(top_pkt->dts,
s->streams[top_pkt->stream_index]->time_base,
AV_TIME_BASE_Q);
for (unsigned i = 0; i < s->nb_streams; i++) {
const AVStream *const st = s->streams[i];
const FFStream *const sti = cffstream(st);
const PacketListEntry *const last = sti->last_in_packet_buffer;
int64_t last_dts;
if (!last || st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
continue;
last_dts = av_rescale_q(last->pkt.dts,
st->time_base,
AV_TIME_BASE_Q);
delta_dts = FFMAX(delta_dts, last_dts - top_dts);
}
if (delta_dts > s->max_interleave_delta) {
av_log(s, AV_LOG_DEBUG,
"Delay between the first packet and last packet in the "
"muxing queue is %"PRId64" > %"PRId64": forcing output\n",
delta_dts, s->max_interleave_delta);
flush = 1;
}
}
#if FF_API_LAVF_SHORTEST
if (si->packet_buffer.head &&
eof &&
(s->flags & AVFMT_FLAG_SHORTEST) &&
si->shortest_end == AV_NOPTS_VALUE) {
AVPacket *const top_pkt = &si->packet_buffer.head->pkt;
si->shortest_end = av_rescale_q(top_pkt->dts,
s->streams[top_pkt->stream_index]->time_base,
AV_TIME_BASE_Q);
}
if (si->shortest_end != AV_NOPTS_VALUE) {
while (si->packet_buffer.head) {
PacketListEntry *pktl = si->packet_buffer.head;
AVPacket *const top_pkt = &pktl->pkt;
AVStream *const st = s->streams[top_pkt->stream_index];
FFStream *const sti = ffstream(st);
int64_t top_dts = av_rescale_q(top_pkt->dts, st->time_base,
AV_TIME_BASE_Q);
if (si->shortest_end + 1 >= top_dts)
break;
si->packet_buffer.head = pktl->next;
if (!si->packet_buffer.head)
si->packet_buffer.tail = NULL;
if (sti->last_in_packet_buffer == pktl)
sti->last_in_packet_buffer = NULL;
av_packet_unref(&pktl->pkt);
av_freep(&pktl);
flush = 0;
}
}
#endif
if (stream_count && flush) {
PacketListEntry *pktl = si->packet_buffer.head;
AVStream *const st = s->streams[pktl->pkt.stream_index];
FFStream *const sti = ffstream(st);
if (sti->last_in_packet_buffer == pktl)
sti->last_in_packet_buffer = NULL;
avpriv_packet_list_get(&si->packet_buffer, pkt);
return 1;
} else {
return 0;
}
}
int ff_interleave_packet_passthrough(AVFormatContext *s, AVPacket *pkt,
int flush, int has_packet)
{
return has_packet;
}
int ff_get_muxer_ts_offset(AVFormatContext *s, int stream_index, int64_t *offset)
{
AVStream *st;
if (stream_index < 0 || stream_index >= s->nb_streams)
return AVERROR(EINVAL);
st = s->streams[stream_index];
*offset = ffstream(st)->mux_ts_offset;
if (s->output_ts_offset)
*offset += av_rescale_q(s->output_ts_offset, AV_TIME_BASE_Q, st->time_base);
return 0;
}
const AVPacket *ff_interleaved_peek(AVFormatContext *s, int stream)
{
FFFormatContext *const si = ffformatcontext(s);
PacketListEntry *pktl = si->packet_buffer.head;
while (pktl) {
if (pktl->pkt.stream_index == stream) {
return &pktl->pkt;
}
pktl = pktl->next;
}
return NULL;
}
static int check_bitstream(AVFormatContext *s, FFStream *sti, AVPacket *pkt)
{
int ret;
if (!(s->flags & AVFMT_FLAG_AUTO_BSF))
return 1;
if (ffofmt(s->oformat)->check_bitstream) {
if (!sti->bitstream_checked) {
if ((ret = ffofmt(s->oformat)->check_bitstream(s, &sti->pub, pkt)) < 0)
return ret;
else if (ret == 1)
sti->bitstream_checked = 1;
}
}
return 1;
}
static int interleaved_write_packet(AVFormatContext *s, AVPacket *pkt,
int flush, int has_packet)
{
FFFormatContext *const si = ffformatcontext(s);
for (;; ) {
int ret = si->interleave_packet(s, pkt, flush, has_packet);
if (ret <= 0)
return ret;
has_packet = 0;
ret = write_packet(s, pkt);
av_packet_unref(pkt);
if (ret < 0)
return ret;
}
}
static int write_packet_common(AVFormatContext *s, AVStream *st, AVPacket *pkt, int interleaved)
{
int ret;
if (s->debug & FF_FDEBUG_TS)
av_log(s, AV_LOG_DEBUG, "%s size:%d dts:%s pts:%s\n", __func__,
pkt->size, av_ts2str(pkt->dts), av_ts2str(pkt->pts));
guess_pkt_duration(s, st, pkt);
#if FF_API_COMPUTE_PKT_FIELDS2
if ((ret = compute_muxer_pkt_fields(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
return ret;
#endif
if (interleaved) {
if (pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
return AVERROR(EINVAL);
return interleaved_write_packet(s, pkt, 0, 1);
} else {
return write_packet(s, pkt);
}
}
static int write_packets_from_bsfs(AVFormatContext *s, AVStream *st, AVPacket *pkt, int interleaved)
{
FFStream *const sti = ffstream(st);
AVBSFContext *const bsfc = sti->bsfc;
int ret;
if ((ret = av_bsf_send_packet(bsfc, pkt)) < 0) {
av_log(s, AV_LOG_ERROR,
"Failed to send packet to filter %s for stream %d\n",
bsfc->filter->name, st->index);
return ret;
}
do {
ret = av_bsf_receive_packet(bsfc, pkt);
if (ret < 0) {
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
return 0;
av_log(s, AV_LOG_ERROR, "Error applying bitstream filters to an output "
"packet for stream #%d: %s\n", st->index, av_err2str(ret));
if (!(s->error_recognition & AV_EF_EXPLODE) && ret != AVERROR(ENOMEM))
continue;
return ret;
}
av_packet_rescale_ts(pkt, bsfc->time_base_out, st->time_base);
ret = write_packet_common(s, st, pkt, interleaved);
if (ret >= 0 && !interleaved) // a successful write_packet_common already unrefed pkt for interleaved
av_packet_unref(pkt);
} while (ret >= 0);
return ret;
}
static int write_packets_common(AVFormatContext *s, AVPacket *pkt, int interleaved)
{
AVStream *st;
FFStream *sti;
int ret = check_packet(s, pkt);
if (ret < 0)
return ret;
st = s->streams[pkt->stream_index];
sti = ffstream(st);
ret = prepare_input_packet(s, st, pkt);
if (ret < 0)
return ret;
ret = check_bitstream(s, sti, pkt);
if (ret < 0)
return ret;
if (sti->bsfc) {
return write_packets_from_bsfs(s, st, pkt, interleaved);
} else {
return write_packet_common(s, st, pkt, interleaved);
}
}
int av_write_frame(AVFormatContext *s, AVPacket *in)
{
FFFormatContext *const si = ffformatcontext(s);
AVPacket *pkt = si->parse_pkt;
int ret;
if (!in) {
if (ffofmt(s->oformat)->flags_internal & FF_OFMT_FLAG_ALLOW_FLUSH) {
ret = ffofmt(s->oformat)->write_packet(s, NULL);
flush_if_needed(s);
if (ret >= 0 && s->pb && s->pb->error < 0)
ret = s->pb->error;
return ret;
}
return 1;
}
if (in->flags & AV_PKT_FLAG_UNCODED_FRAME) {
pkt = in;
} else {
/* We don't own in, so we have to make sure not to modify it.
* (ff_write_chained() relies on this fact.)
* The following avoids copying in's data unnecessarily.
* Copying side data is unavoidable as a bitstream filter
* may change it, e.g. free it on errors. */
pkt->data = in->data;
pkt->size = in->size;
ret = av_packet_copy_props(pkt, in);
if (ret < 0)
return ret;
if (in->buf) {
pkt->buf = av_buffer_ref(in->buf);
if (!pkt->buf) {
ret = AVERROR(ENOMEM);
goto fail;
}
}
}
ret = write_packets_common(s, pkt, 0/*non-interleaved*/);
fail:
// Uncoded frames using the noninterleaved codepath are also freed here
av_packet_unref(pkt);
return ret;
}
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)
{
int ret;
if (pkt) {
ret = write_packets_common(s, pkt, 1/*interleaved*/);
if (ret < 0)
av_packet_unref(pkt);
return ret;
} else {
av_log(s, AV_LOG_TRACE, "av_interleaved_write_frame FLUSH\n");
return interleaved_write_packet(s, ffformatcontext(s)->parse_pkt, 1/*flush*/, 0);
}
}
int av_write_trailer(AVFormatContext *s)
{
FFFormatContext *const si = ffformatcontext(s);
AVPacket *const pkt = si->parse_pkt;
int ret1, ret = 0;
for (unsigned i = 0; i < s->nb_streams; i++) {
AVStream *const st = s->streams[i];
FFStream *const sti = ffstream(st);
if (sti->bsfc) {
ret1 = write_packets_from_bsfs(s, st, pkt, 1/*interleaved*/);
if (ret1 < 0)
av_packet_unref(pkt);
if (ret >= 0)
ret = ret1;
}
}
ret1 = interleaved_write_packet(s, pkt, 1, 0);
if (ret >= 0)
ret = ret1;
if (ffofmt(s->oformat)->write_trailer) {
if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_TRAILER);
ret1 = ffofmt(s->oformat)->write_trailer(s);
if (ret >= 0)
ret = ret1;
}
deinit_muxer(s);
if (s->pb)
avio_flush(s->pb);
if (ret == 0)
ret = s->pb ? s->pb->error : 0;
for (unsigned i = 0; i < s->nb_streams; i++) {
av_freep(&s->streams[i]->priv_data);
av_freep(&ffstream(s->streams[i])->index_entries);
}
if (s->oformat->priv_class)
av_opt_free(s->priv_data);
av_freep(&s->priv_data);
av_packet_unref(si->pkt);
return ret;
}
int av_get_output_timestamp(struct AVFormatContext *s, int stream,
int64_t *dts, int64_t *wall)
{
const FFOutputFormat *const of = ffofmt(s->oformat);
if (!of || !of->get_output_timestamp)
return AVERROR(ENOSYS);
of->get_output_timestamp(s, stream, dts, wall);
return 0;
}
int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
{
int ret;
const AVBitStreamFilter *bsf;
FFStream *const sti = ffstream(st);
AVBSFContext *bsfc;
av_assert0(!sti->bsfc);
if (!(bsf = av_bsf_get_by_name(name))) {
av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
return AVERROR_BSF_NOT_FOUND;
}
if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
return ret;
bsfc->time_base_in = st->time_base;
if ((ret = avcodec_parameters_copy(bsfc->par_in, st->codecpar)) < 0) {
av_bsf_free(&bsfc);
return ret;
}
if (args && bsfc->filter->priv_class) {
if ((ret = av_set_options_string(bsfc->priv_data, args, "=", ":")) < 0) {
av_bsf_free(&bsfc);
return ret;
}
}
if ((ret = av_bsf_init(bsfc)) < 0) {
av_bsf_free(&bsfc);
return ret;
}
sti->bsfc = bsfc;
av_log(NULL, AV_LOG_VERBOSE,
"Automatically inserted bitstream filter '%s'; args='%s'\n",
name, args ? args : "");
return 1;
}
int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
AVFormatContext *src, int interleave)
{
int64_t pts = pkt->pts, dts = pkt->dts, duration = pkt->duration;
int stream_index = pkt->stream_index;
AVRational time_base = pkt->time_base;
int ret;
pkt->stream_index = dst_stream;
av_packet_rescale_ts(pkt,
src->streams[stream_index]->time_base,
dst->streams[dst_stream]->time_base);
if (!interleave) {
ret = av_write_frame(dst, pkt);
/* We only have to backup and restore the fields that
* we changed ourselves, because av_write_frame() does not
* modify the packet given to it. */
pkt->pts = pts;
pkt->dts = dts;
pkt->duration = duration;
pkt->stream_index = stream_index;
pkt->time_base = time_base;
} else
ret = av_interleaved_write_frame(dst, pkt);
return ret;
}
static void uncoded_frame_free(void *unused, uint8_t *data)
{
av_frame_free((AVFrame **)data);
av_free(data);
}
static int write_uncoded_frame_internal(AVFormatContext *s, int stream_index,
AVFrame *frame, int interleaved)
{
FFFormatContext *const si = ffformatcontext(s);
AVPacket *pkt = si->parse_pkt;
av_assert0(s->oformat);
if (!ffofmt(s->oformat)->write_uncoded_frame) {
av_frame_free(&frame);
return AVERROR(ENOSYS);
}
if (!frame) {
pkt = NULL;
} else {
size_t bufsize = sizeof(frame) + AV_INPUT_BUFFER_PADDING_SIZE;
AVFrame **framep = av_mallocz(bufsize);
if (!framep)
goto fail;
pkt->buf = av_buffer_create((void *)framep, bufsize,
uncoded_frame_free, NULL, 0);
if (!pkt->buf) {
av_free(framep);
fail:
av_frame_free(&frame);
return AVERROR(ENOMEM);
}
*framep = frame;
pkt->data = (void *)framep;
pkt->size = sizeof(frame);
pkt->pts =
pkt->dts = frame->pts;
pkt->duration = frame->duration;
pkt->stream_index = stream_index;
pkt->flags |= AV_PKT_FLAG_UNCODED_FRAME;
}
return interleaved ? av_interleaved_write_frame(s, pkt) :
av_write_frame(s, pkt);
}
int av_write_uncoded_frame(AVFormatContext *s, int stream_index,
AVFrame *frame)
{
return write_uncoded_frame_internal(s, stream_index, frame, 0);
}
int av_interleaved_write_uncoded_frame(AVFormatContext *s, int stream_index,
AVFrame *frame)
{
return write_uncoded_frame_internal(s, stream_index, frame, 1);
}
int av_write_uncoded_frame_query(AVFormatContext *s, int stream_index)
{
const FFOutputFormat *const of = ffofmt(s->oformat);
av_assert0(of);
if (!of->write_uncoded_frame)
return AVERROR(ENOSYS);
return of->write_uncoded_frame(s, stream_index, NULL,
AV_WRITE_UNCODED_FRAME_QUERY);
}
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