1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/*
* RTSP muxer
* 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 <sys/time.h>
#if HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#include "network.h"
#include "rtsp.h"
static int rtsp_write_record(AVFormatContext *s)
{
RTSPState *rt = s->priv_data;
RTSPMessageHeader reply1, *reply = &reply1;
char cmd[1024];
snprintf(cmd, sizeof(cmd),
"RECORD %s RTSP/1.0\r\n"
"Range: npt=%0.3f-\r\n",
s->filename,
(double) 0);
ff_rtsp_send_cmd(s, cmd, reply, NULL);
if (reply->status_code != RTSP_STATUS_OK)
return -1;
rt->state = RTSP_STATE_STREAMING;
return 0;
}
static int rtsp_write_header(AVFormatContext *s)
{
RTSPState *rt = s->priv_data;
int ret;
ret = ff_rtsp_connect(s);
if (ret)
return ret;
if (rtsp_write_record(s) < 0) {
ff_rtsp_close_streams(s);
url_close(rt->rtsp_hd);
return AVERROR_INVALIDDATA;
}
return 0;
}
static int rtsp_write_packet(AVFormatContext *s, AVPacket *pkt)
{
RTSPState *rt = s->priv_data;
RTSPStream *rtsp_st;
fd_set rfds;
int n, tcp_fd;
struct timeval tv;
AVFormatContext *rtpctx;
AVPacket local_pkt;
FD_ZERO(&rfds);
tcp_fd = url_get_file_handle(rt->rtsp_hd);
FD_SET(tcp_fd, &rfds);
tv.tv_sec = 0;
tv.tv_usec = 0;
n = select(tcp_fd + 1, &rfds, NULL, NULL, &tv);
if (n > 0) {
if (FD_ISSET(tcp_fd, &rfds)) {
RTSPMessageHeader reply;
if (ff_rtsp_read_reply(s, &reply, NULL, 0) < 0)
return AVERROR(EPIPE);
/* XXX: parse message */
if (rt->state != RTSP_STATE_STREAMING)
return AVERROR(EPIPE);
}
}
if (pkt->stream_index < 0 || pkt->stream_index >= rt->nb_rtsp_streams)
return AVERROR_INVALIDDATA;
rtsp_st = rt->rtsp_streams[pkt->stream_index];
rtpctx = rtsp_st->transport_priv;
/* Use a local packet for writing to the chained muxer, otherwise
* the internal stream_index = 0 becomes visible to the muxer user. */
local_pkt = *pkt;
local_pkt.stream_index = 0;
return av_write_frame(rtpctx, &local_pkt);
}
static int rtsp_write_close(AVFormatContext *s)
{
RTSPState *rt = s->priv_data;
char cmd[1024];
snprintf(cmd, sizeof(cmd),
"TEARDOWN %s RTSP/1.0\r\n",
s->filename);
ff_rtsp_send_cmd_async(s, cmd);
ff_rtsp_close_streams(s);
url_close(rt->rtsp_hd);
return 0;
}
AVOutputFormat rtsp_muxer = {
"rtsp",
NULL_IF_CONFIG_SMALL("RTSP output format"),
NULL,
NULL,
sizeof(RTSPState),
CODEC_ID_PCM_MULAW,
CODEC_ID_NONE,
rtsp_write_header,
rtsp_write_packet,
rtsp_write_close,
.flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER,
};
|
