110 lines
3.2 KiB
C
110 lines
3.2 KiB
C
/*
|
|
* RTP muxer chaining code
|
|
* Copyright (c) 2010 Martin Storsjo
|
|
*
|
|
* 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 "avio_internal.h"
|
|
#include "rtpenc_chain.h"
|
|
#include "rtp.h"
|
|
#include "libavutil/opt.h"
|
|
|
|
int ff_rtp_chain_mux_open(AVFormatContext **out, AVFormatContext *s,
|
|
AVStream *st, URLContext *handle, int packet_size,
|
|
int idx)
|
|
{
|
|
AVFormatContext *rtpctx = NULL;
|
|
int ret;
|
|
AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
|
|
uint8_t *rtpflags;
|
|
AVDictionary *opts = NULL;
|
|
|
|
if (!rtp_format) {
|
|
ret = AVERROR(ENOSYS);
|
|
goto fail;
|
|
}
|
|
|
|
/* Allocate an AVFormatContext for each output stream */
|
|
rtpctx = avformat_alloc_context();
|
|
if (!rtpctx) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
|
|
rtpctx->oformat = rtp_format;
|
|
if (!avformat_new_stream(rtpctx, NULL)) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
/* Pass the interrupt callback on */
|
|
rtpctx->interrupt_callback = s->interrupt_callback;
|
|
/* Copy the max delay setting; the rtp muxer reads this. */
|
|
rtpctx->max_delay = s->max_delay;
|
|
/* Copy other stream parameters. */
|
|
rtpctx->streams[0]->sample_aspect_ratio = st->sample_aspect_ratio;
|
|
rtpctx->flags |= s->flags & AVFMT_FLAG_MP4A_LATM;
|
|
|
|
/* Get the payload type from the codec */
|
|
if (st->id < RTP_PT_PRIVATE)
|
|
rtpctx->streams[0]->id =
|
|
ff_rtp_get_payload_type(s, st->codec, idx);
|
|
else
|
|
rtpctx->streams[0]->id = st->id;
|
|
|
|
|
|
if (av_opt_get(s, "rtpflags", AV_OPT_SEARCH_CHILDREN, &rtpflags) >= 0)
|
|
av_dict_set(&opts, "rtpflags", rtpflags, AV_DICT_DONT_STRDUP_VAL);
|
|
|
|
/* Set the synchronized start time. */
|
|
rtpctx->start_time_realtime = s->start_time_realtime;
|
|
|
|
avcodec_copy_context(rtpctx->streams[0]->codec, st->codec);
|
|
|
|
if (handle) {
|
|
ret = ffio_fdopen(&rtpctx->pb, handle);
|
|
if (ret < 0)
|
|
ffurl_close(handle);
|
|
} else
|
|
ret = ffio_open_dyn_packet_buf(&rtpctx->pb, packet_size);
|
|
if (!ret)
|
|
ret = avformat_write_header(rtpctx, &opts);
|
|
av_dict_free(&opts);
|
|
|
|
if (ret) {
|
|
if (handle && rtpctx->pb) {
|
|
avio_close(rtpctx->pb);
|
|
} else if (rtpctx->pb) {
|
|
uint8_t *ptr;
|
|
avio_close_dyn_buf(rtpctx->pb, &ptr);
|
|
av_free(ptr);
|
|
}
|
|
avformat_free_context(rtpctx);
|
|
return ret;
|
|
}
|
|
|
|
*out = rtpctx;
|
|
return 0;
|
|
|
|
fail:
|
|
av_free(rtpctx);
|
|
if (handle)
|
|
ffurl_close(handle);
|
|
return ret;
|
|
}
|