rtp: set the payload type as stream id
[libav.git] / libavformat / rtpenc_chain.c
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1/*
2 * RTP muxer chaining code
3 * Copyright (c) 2010 Martin Storsjo
4 *
2912e87a 5 * This file is part of Libav.
a493f80a 6 *
2912e87a 7 * Libav is free software; you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
2912e87a 18 * License along with Libav; if not, write to the Free Software
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19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include "avformat.h"
724f6a0f 23#include "avio_internal.h"
a493f80a 24#include "rtpenc_chain.h"
403ee835 25#include "avio_internal.h"
8034130e 26#include "rtp.h"
ff0824f7 27#include "libavutil/opt.h"
a493f80a 28
68c81308 29int ff_rtp_chain_mux_open(AVFormatContext **out, AVFormatContext *s,
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30 AVStream *st, URLContext *handle, int packet_size,
31 int idx)
a493f80a 32{
93cef6f9 33 AVFormatContext *rtpctx = NULL;
8034130e 34 int ret, pt;
a493f80a 35 AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
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36 uint8_t *rtpflags;
37 AVDictionary *opts = NULL;
a493f80a 38
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39 if (!rtp_format) {
40 ret = AVERROR(ENOSYS);
93cef6f9 41 goto fail;
68c81308 42 }
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43
44 /* Allocate an AVFormatContext for each output stream */
45 rtpctx = avformat_alloc_context();
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46 if (!rtpctx) {
47 ret = AVERROR(ENOMEM);
93cef6f9 48 goto fail;
68c81308 49 }
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50
51 rtpctx->oformat = rtp_format;
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52 if (!avformat_new_stream(rtpctx, NULL)) {
53 ret = AVERROR(ENOMEM);
93cef6f9 54 goto fail;
68c81308 55 }
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56 /* Pass the interrupt callback on */
57 rtpctx->interrupt_callback = s->interrupt_callback;
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58 /* Copy the max delay setting; the rtp muxer reads this. */
59 rtpctx->max_delay = s->max_delay;
60 /* Copy other stream parameters. */
61 rtpctx->streams[0]->sample_aspect_ratio = st->sample_aspect_ratio;
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62 /* Get the payload type from the codec */
63 if (st->id < RTP_PT_PRIVATE)
64 rtpctx->streams[0]->id =
65 ff_rtp_get_payload_type(rtpctx, st->codec, idx);
66 else
67 rtpctx->streams[0]->id = st->id;
a493f80a 68
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69 if (av_opt_get(s, "rtpflags", AV_OPT_SEARCH_CHILDREN, &rtpflags) >= 0)
70 av_dict_set(&opts, "rtpflags", rtpflags, AV_DICT_DONT_STRDUP_VAL);
ff0824f7 71
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72 /* Set the synchronized start time. */
73 rtpctx->start_time_realtime = s->start_time_realtime;
74
1338dc08 75 avcodec_copy_context(rtpctx->streams[0]->codec, st->codec);
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76
77 if (handle) {
724f6a0f 78 ffio_fdopen(&rtpctx->pb, handle);
a493f80a 79 } else
403ee835 80 ffio_open_dyn_packet_buf(&rtpctx->pb, packet_size);
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81 ret = avformat_write_header(rtpctx, &opts);
82 av_dict_free(&opts);
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83
84 if (ret) {
85 if (handle) {
22a3212e 86 avio_close(rtpctx->pb);
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87 } else {
88 uint8_t *ptr;
6dc7d80d 89 avio_close_dyn_buf(rtpctx->pb, &ptr);
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90 av_free(ptr);
91 }
b22dbb29 92 avformat_free_context(rtpctx);
68c81308 93 return ret;
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94 }
95
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96 *out = rtpctx;
97 return 0;
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98
99fail:
100 av_free(rtpctx);
101 if (handle)
102 ffurl_close(handle);
68c81308 103 return ret;
a493f80a 104}