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110 lines
3.3 KiB
110 lines
3.3 KiB
/* |
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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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rtpctx->streams[0]->time_base = st->time_base; |
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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_closep(&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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