2 * RTP muxer chaining code
3 * Copyright (c) 2010 Martin Storsjo
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
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.
12 * FFmpeg is distributed in the hope that it will be useful,
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.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "avio_internal.h"
24 #include "rtpenc_chain.h"
26 #include "libavutil/opt.h"
28 int ff_rtp_chain_mux_open(AVFormatContext
**out
, AVFormatContext
*s
,
29 AVStream
*st
, URLContext
*handle
, int packet_size
,
32 AVFormatContext
*rtpctx
= NULL
;
34 AVOutputFormat
*rtp_format
= av_guess_format("rtp", NULL
, NULL
);
36 AVDictionary
*opts
= NULL
;
39 ret
= AVERROR(ENOSYS
);
43 /* Allocate an AVFormatContext for each output stream */
44 rtpctx
= avformat_alloc_context();
46 ret
= AVERROR(ENOMEM
);
50 rtpctx
->oformat
= rtp_format
;
51 if (!avformat_new_stream(rtpctx
, NULL
)) {
52 ret
= AVERROR(ENOMEM
);
55 /* Pass the interrupt callback on */
56 rtpctx
->interrupt_callback
= s
->interrupt_callback
;
57 /* Copy the max delay setting; the rtp muxer reads this. */
58 rtpctx
->max_delay
= s
->max_delay
;
59 /* Copy other stream parameters. */
60 rtpctx
->streams
[0]->sample_aspect_ratio
= st
->sample_aspect_ratio
;
61 rtpctx
->flags
|= s
->flags
& AVFMT_FLAG_MP4A_LATM
;
63 /* Get the payload type from the codec */
64 if (st
->id
< RTP_PT_PRIVATE
)
65 rtpctx
->streams
[0]->id
=
66 ff_rtp_get_payload_type(s
, st
->codec
, idx
);
68 rtpctx
->streams
[0]->id
= st
->id
;
71 if (av_opt_get(s
, "rtpflags", AV_OPT_SEARCH_CHILDREN
, &rtpflags
) >= 0)
72 av_dict_set(&opts
, "rtpflags", rtpflags
, AV_DICT_DONT_STRDUP_VAL
);
74 /* Set the synchronized start time. */
75 rtpctx
->start_time_realtime
= s
->start_time_realtime
;
77 avcodec_copy_context(rtpctx
->streams
[0]->codec
, st
->codec
);
78 rtpctx
->streams
[0]->time_base
= st
->time_base
;
81 ret
= ffio_fdopen(&rtpctx
->pb
, handle
);
85 ret
= ffio_open_dyn_packet_buf(&rtpctx
->pb
, packet_size
);
87 ret
= avformat_write_header(rtpctx
, &opts
);
91 if (handle
&& rtpctx
->pb
) {
92 avio_close(rtpctx
->pb
);
93 } else if (rtpctx
->pb
) {
95 avio_close_dyn_buf(rtpctx
->pb
, &ptr
);
98 avformat_free_context(rtpctx
);