| /* |
| * 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; |
| ff_const59 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_BITEXACT; |
| rtpctx->strict_std_compliance = s->strict_std_compliance; |
| |
| /* Get the payload type from the codec */ |
| if (st->id < RTP_PT_PRIVATE) |
| rtpctx->streams[0]->id = |
| ff_rtp_get_payload_type(s, st->codecpar, 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_parameters_copy(rtpctx->streams[0]->codecpar, st->codecpar); |
| rtpctx->streams[0]->time_base = st->time_base; |
| |
| 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_closep(&rtpctx->pb); |
| } else if (rtpctx->pb) { |
| ffio_free_dyn_buf(&rtpctx->pb); |
| } |
| avformat_free_context(rtpctx); |
| return ret; |
| } |
| |
| *out = rtpctx; |
| return 0; |
| |
| fail: |
| avformat_free_context(rtpctx); |
| if (handle) |
| ffurl_close(handle); |
| return ret; |
| } |