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