Add an RTSP muxer
[libav.git] / libavformat / rtspenc.c
CommitLineData
6f5a3d0a
MS
1/*
2 * RTSP muxer
3 * Copyright (c) 2010 Martin Storsjo
4 *
5 * This file is part of FFmpeg.
6 *
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.
11 *
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.
16 *
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
20 */
21
22#include "avformat.h"
23
24#include <sys/time.h>
25#if HAVE_SYS_SELECT_H
26#include <sys/select.h>
27#endif
28#include "network.h"
29#include "rtsp.h"
30
31static int rtsp_write_record(AVFormatContext *s)
32{
33 RTSPState *rt = s->priv_data;
34 RTSPMessageHeader reply1, *reply = &reply1;
35 char cmd[1024];
36
37 snprintf(cmd, sizeof(cmd),
38 "RECORD %s RTSP/1.0\r\n"
39 "Range: npt=%0.3f-\r\n",
40 s->filename,
41 (double) 0);
42 rtsp_send_cmd(s, cmd, reply, NULL);
43 if (reply->status_code != RTSP_STATUS_OK)
44 return -1;
45 rt->state = RTSP_STATE_STREAMING;
46 return 0;
47}
48
49static int rtsp_write_header(AVFormatContext *s)
50{
51 RTSPState *rt = s->priv_data;
52 int ret;
53
54 ret = rtsp_connect(s);
55 if (ret)
56 return ret;
57
58 if (rtsp_write_record(s) < 0) {
59 rtsp_close_streams(s);
60 url_close(rt->rtsp_hd);
61 return AVERROR_INVALIDDATA;
62 }
63 return 0;
64}
65
66static int rtsp_write_packet(AVFormatContext *s, AVPacket *pkt)
67{
68 RTSPState *rt = s->priv_data;
69 RTSPStream *rtsp_st;
70 fd_set rfds;
71 int n, tcp_fd;
72 struct timeval tv;
73 AVFormatContext *rtpctx;
74
75 FD_ZERO(&rfds);
76 tcp_fd = url_get_file_handle(rt->rtsp_hd);
77 FD_SET(tcp_fd, &rfds);
78
79 tv.tv_sec = 0;
80 tv.tv_usec = 0;
81 n = select(tcp_fd + 1, &rfds, NULL, NULL, &tv);
82 if (n > 0) {
83 if (FD_ISSET(tcp_fd, &rfds)) {
84 RTSPMessageHeader reply;
85
86 if (rtsp_read_reply(s, &reply, NULL, 0) < 0)
87 return AVERROR(EPIPE);
88 /* XXX: parse message */
89 if (rt->state != RTSP_STATE_STREAMING)
90 return AVERROR(EPIPE);
91 }
92 }
93
94 if (pkt->stream_index < 0 || pkt->stream_index >= rt->nb_rtsp_streams)
95 return AVERROR_INVALIDDATA;
96 rtsp_st = rt->rtsp_streams[pkt->stream_index];
97 rtpctx = rtsp_st->transport_priv;
98
99 pkt->stream_index = 0;
100 return av_write_frame(rtpctx, pkt);
101}
102
103static int rtsp_write_close(AVFormatContext *s)
104{
105 RTSPState *rt = s->priv_data;
106 char cmd[1024];
107
108 snprintf(cmd, sizeof(cmd),
109 "TEARDOWN %s RTSP/1.0\r\n",
110 s->filename);
111 rtsp_send_cmd_async(s, cmd);
112
113 rtsp_close_streams(s);
114 url_close(rt->rtsp_hd);
115 return 0;
116}
117
118AVOutputFormat rtsp_muxer = {
119 "rtsp",
120 NULL_IF_CONFIG_SMALL("RTSP output format"),
121 NULL,
122 NULL,
123 sizeof(RTSPState),
124 CODEC_ID_PCM_MULAW,
125 CODEC_ID_NONE,
126 rtsp_write_header,
127 rtsp_write_packet,
128 rtsp_write_close,
129 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER,
130};
131