mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-07 11:13:41 +02:00
9aa7397db1
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
1460 lines
47 KiB
C
1460 lines
47 KiB
C
/*
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* muxing functions for use within FFmpeg
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "avformat.h"
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#include "internal.h"
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#include "mux.h"
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#include "version.h"
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#include "libavcodec/bsf.h"
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#include "libavcodec/internal.h"
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#include "libavcodec/packet_internal.h"
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#include "libavutil/opt.h"
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#include "libavutil/dict.h"
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#include "libavutil/timestamp.h"
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#include "libavutil/avassert.h"
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#include "libavutil/internal.h"
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#include "libavutil/mathematics.h"
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/**
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* @file
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* muxing functions for use within libavformat
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*/
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/* fraction handling */
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/**
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* f = val + (num / den) + 0.5.
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*
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* 'num' is normalized so that it is such as 0 <= num < den.
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*
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* @param f fractional number
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* @param val integer value
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* @param num must be >= 0
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* @param den must be >= 1
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*/
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static void frac_init(FFFrac *f, int64_t val, int64_t num, int64_t den)
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{
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num += (den >> 1);
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if (num >= den) {
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val += num / den;
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num = num % den;
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}
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f->val = val;
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f->num = num;
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f->den = den;
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}
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/**
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* Fractional addition to f: f = f + (incr / f->den).
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*
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* @param f fractional number
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* @param incr increment, can be positive or negative
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*/
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static void frac_add(FFFrac *f, int64_t incr)
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{
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int64_t num, den;
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num = f->num + incr;
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den = f->den;
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if (num < 0) {
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f->val += num / den;
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num = num % den;
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if (num < 0) {
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num += den;
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f->val--;
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}
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} else if (num >= den) {
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f->val += num / den;
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num = num % den;
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}
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f->num = num;
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}
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int avformat_alloc_output_context2(AVFormatContext **avctx, const AVOutputFormat *oformat,
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const char *format, const char *filename)
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{
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AVFormatContext *s = avformat_alloc_context();
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int ret = 0;
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*avctx = NULL;
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if (!s)
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goto nomem;
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if (!oformat) {
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if (format) {
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oformat = av_guess_format(format, NULL, NULL);
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if (!oformat) {
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av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
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ret = AVERROR(EINVAL);
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goto error;
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}
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} else {
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oformat = av_guess_format(NULL, filename, NULL);
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if (!oformat) {
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ret = AVERROR(EINVAL);
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av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
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filename);
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goto error;
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}
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}
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}
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s->oformat = oformat;
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if (s->oformat->priv_data_size > 0) {
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s->priv_data = av_mallocz(s->oformat->priv_data_size);
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if (!s->priv_data)
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goto nomem;
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if (s->oformat->priv_class) {
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*(const AVClass**)s->priv_data= s->oformat->priv_class;
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av_opt_set_defaults(s->priv_data);
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}
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} else
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s->priv_data = NULL;
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if (filename) {
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if (!(s->url = av_strdup(filename)))
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goto nomem;
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}
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*avctx = s;
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return 0;
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nomem:
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av_log(s, AV_LOG_ERROR, "Out of memory\n");
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ret = AVERROR(ENOMEM);
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error:
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avformat_free_context(s);
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return ret;
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}
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static int validate_codec_tag(const AVFormatContext *s, const AVStream *st)
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{
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const AVCodecTag *avctag;
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enum AVCodecID id = AV_CODEC_ID_NONE;
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unsigned uppercase_tag = ff_toupper4(st->codecpar->codec_tag);
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int64_t tag = -1;
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/**
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* Check that tag + id is in the table
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* If neither is in the table -> OK
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* If tag is in the table with another id -> FAIL
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* If id is in the table with another tag -> FAIL unless strict < normal
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*/
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for (int n = 0; s->oformat->codec_tag[n]; n++) {
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avctag = s->oformat->codec_tag[n];
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while (avctag->id != AV_CODEC_ID_NONE) {
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if (ff_toupper4(avctag->tag) == uppercase_tag) {
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id = avctag->id;
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if (id == st->codecpar->codec_id)
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return 1;
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}
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if (avctag->id == st->codecpar->codec_id)
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tag = avctag->tag;
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avctag++;
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}
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}
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if (id != AV_CODEC_ID_NONE)
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return 0;
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if (tag >= 0 && (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
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return 0;
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return 1;
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}
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static int init_muxer(AVFormatContext *s, AVDictionary **options)
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{
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FFFormatContext *const si = ffformatcontext(s);
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AVDictionary *tmp = NULL;
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const AVOutputFormat *of = s->oformat;
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AVDictionaryEntry *e;
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int ret = 0;
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if (options)
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av_dict_copy(&tmp, *options, 0);
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if ((ret = av_opt_set_dict(s, &tmp)) < 0)
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goto fail;
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if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
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(ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
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goto fail;
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if (!s->url && !(s->url = av_strdup(""))) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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// some sanity checks
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if (s->nb_streams == 0 && !(of->flags & AVFMT_NOSTREAMS)) {
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av_log(s, AV_LOG_ERROR, "No streams to mux were specified\n");
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ret = AVERROR(EINVAL);
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goto fail;
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}
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for (unsigned i = 0; i < s->nb_streams; i++) {
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AVStream *const st = s->streams[i];
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FFStream *const sti = ffstream(st);
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AVCodecParameters *const par = st->codecpar;
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const AVCodecDescriptor *desc;
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if (!st->time_base.num) {
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/* fall back on the default timebase values */
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if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->sample_rate)
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avpriv_set_pts_info(st, 64, 1, par->sample_rate);
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else
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avpriv_set_pts_info(st, 33, 1, 90000);
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}
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switch (par->codec_type) {
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case AVMEDIA_TYPE_AUDIO:
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if (par->sample_rate <= 0) {
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av_log(s, AV_LOG_ERROR, "sample rate not set\n");
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ret = AVERROR(EINVAL);
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goto fail;
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}
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#if FF_API_OLD_CHANNEL_LAYOUT
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FF_DISABLE_DEPRECATION_WARNINGS
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/* if the caller is using the deprecated channel layout API,
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* convert it to the new style */
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if (!par->ch_layout.nb_channels &&
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par->channels) {
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if (par->channel_layout) {
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av_channel_layout_from_mask(&par->ch_layout, par->channel_layout);
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} else {
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par->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
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par->ch_layout.nb_channels = par->channels;
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}
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}
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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if (!par->block_align)
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par->block_align = par->ch_layout.nb_channels *
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av_get_bits_per_sample(par->codec_id) >> 3;
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break;
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case AVMEDIA_TYPE_VIDEO:
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if ((par->width <= 0 || par->height <= 0) &&
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!(of->flags & AVFMT_NODIMENSIONS)) {
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av_log(s, AV_LOG_ERROR, "dimensions not set\n");
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ret = AVERROR(EINVAL);
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goto fail;
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}
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if (av_cmp_q(st->sample_aspect_ratio, par->sample_aspect_ratio)
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&& fabs(av_q2d(st->sample_aspect_ratio) - av_q2d(par->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
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) {
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if (st->sample_aspect_ratio.num != 0 &&
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st->sample_aspect_ratio.den != 0 &&
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par->sample_aspect_ratio.num != 0 &&
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par->sample_aspect_ratio.den != 0) {
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av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer "
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"(%d/%d) and encoder layer (%d/%d)\n",
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st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
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par->sample_aspect_ratio.num,
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par->sample_aspect_ratio.den);
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ret = AVERROR(EINVAL);
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goto fail;
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}
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}
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break;
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}
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desc = avcodec_descriptor_get(par->codec_id);
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if (desc && desc->props & AV_CODEC_PROP_REORDER)
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sti->reorder = 1;
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sti->is_intra_only = ff_is_intra_only(par->codec_id);
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if (of->codec_tag) {
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if ( par->codec_tag
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&& par->codec_id == AV_CODEC_ID_RAWVIDEO
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&& ( av_codec_get_tag(of->codec_tag, par->codec_id) == 0
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|| av_codec_get_tag(of->codec_tag, par->codec_id) == MKTAG('r', 'a', 'w', ' '))
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&& !validate_codec_tag(s, st)) {
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// the current rawvideo encoding system ends up setting
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// the wrong codec_tag for avi/mov, we override it here
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par->codec_tag = 0;
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}
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if (par->codec_tag) {
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if (!validate_codec_tag(s, st)) {
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const uint32_t otag = av_codec_get_tag(s->oformat->codec_tag, par->codec_id);
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av_log(s, AV_LOG_ERROR,
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"Tag %s incompatible with output codec id '%d' (%s)\n",
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av_fourcc2str(par->codec_tag), par->codec_id, av_fourcc2str(otag));
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ret = AVERROR_INVALIDDATA;
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goto fail;
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}
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} else
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par->codec_tag = av_codec_get_tag(of->codec_tag, par->codec_id);
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}
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if (par->codec_type != AVMEDIA_TYPE_ATTACHMENT)
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si->nb_interleaved_streams++;
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}
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si->interleave_packet = of->interleave_packet;
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if (!si->interleave_packet)
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si->interleave_packet = si->nb_interleaved_streams > 1 ?
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ff_interleave_packet_per_dts :
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ff_interleave_packet_passthrough;
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if (!s->priv_data && of->priv_data_size > 0) {
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s->priv_data = av_mallocz(of->priv_data_size);
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if (!s->priv_data) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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if (of->priv_class) {
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*(const AVClass **)s->priv_data = of->priv_class;
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av_opt_set_defaults(s->priv_data);
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if ((ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
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goto fail;
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}
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}
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/* set muxer identification string */
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if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
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av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
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} else {
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av_dict_set(&s->metadata, "encoder", NULL, 0);
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}
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|
|
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for (e = NULL; e = av_dict_get(s->metadata, "encoder-", e, AV_DICT_IGNORE_SUFFIX); ) {
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av_dict_set(&s->metadata, e->key, NULL, 0);
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}
|
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if (options) {
|
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av_dict_free(options);
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*options = tmp;
|
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}
|
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|
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if (s->oformat->init) {
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if ((ret = s->oformat->init(s)) < 0) {
|
|
if (s->oformat->deinit)
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s->oformat->deinit(s);
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return ret;
|
|
}
|
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return ret == 0;
|
|
}
|
|
|
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return 0;
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|
|
|
fail:
|
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av_dict_free(&tmp);
|
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return ret;
|
|
}
|
|
|
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static int init_pts(AVFormatContext *s)
|
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{
|
|
FFFormatContext *const si = ffformatcontext(s);
|
|
|
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/* init PTS generation */
|
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for (unsigned i = 0; i < s->nb_streams; i++) {
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AVStream *const st = s->streams[i];
|
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FFStream *const sti = ffstream(st);
|
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int64_t den = AV_NOPTS_VALUE;
|
|
|
|
switch (st->codecpar->codec_type) {
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case AVMEDIA_TYPE_AUDIO:
|
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den = (int64_t)st->time_base.num * st->codecpar->sample_rate;
|
|
break;
|
|
case AVMEDIA_TYPE_VIDEO:
|
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den = (int64_t)st->time_base.num * st->time_base.den;
|
|
break;
|
|
default:
|
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break;
|
|
}
|
|
|
|
if (!sti->priv_pts)
|
|
sti->priv_pts = av_mallocz(sizeof(*sti->priv_pts));
|
|
if (!sti->priv_pts)
|
|
return AVERROR(ENOMEM);
|
|
|
|
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);
|
|
if (s->oformat && s->oformat->deinit && si->initialized)
|
|
s->oformat->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 (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 (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
|
|
avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_HEADER);
|
|
if (s->oformat->write_header) {
|
|
ret = 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 = s->oformat->write_uncoded_frame(s, pkt->stream_index, frame, 0);
|
|
} else {
|
|
ret = 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) {
|
|
++noninterleaved_count;
|
|
}
|
|
}
|
|
|
|
if (si->nb_interleaved_streams == stream_count)
|
|
flush = 1;
|
|
|
|
if (s->max_interleave_delta > 0 &&
|
|
si->packet_buffer.head &&
|
|
!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)
|
|
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 (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;
|
|
}
|
|
}
|
|
|
|
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 (s->oformat->check_bitstream) {
|
|
if (!sti->bitstream_checked) {
|
|
if ((ret = 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", __FUNCTION__,
|
|
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 (s->oformat->flags & AVFMT_ALLOW_FLUSH) {
|
|
ret = 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 (s->oformat->write_trailer) {
|
|
if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
|
|
avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_TRAILER);
|
|
if (ret >= 0) {
|
|
ret = s->oformat->write_trailer(s);
|
|
} else {
|
|
s->oformat->write_trailer(s);
|
|
}
|
|
}
|
|
|
|
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)
|
|
{
|
|
if (!s->oformat || !s->oformat->get_output_timestamp)
|
|
return AVERROR(ENOSYS);
|
|
s->oformat->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 (!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;
|
|
#if FF_API_PKT_DURATION
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
if (frame->pkt_duration)
|
|
pkt->duration = frame->pkt_duration;
|
|
else
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
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)
|
|
{
|
|
av_assert0(s->oformat);
|
|
if (!s->oformat->write_uncoded_frame)
|
|
return AVERROR(ENOSYS);
|
|
return s->oformat->write_uncoded_frame(s, stream_index, NULL,
|
|
AV_WRITE_UNCODED_FRAME_QUERY);
|
|
}
|