1 /*
2  * based on previous Real RTSP support from Roberto Togni and xine team.
3  *
4  * Copyright (C) 2006 Benjamin Zores
5  *
6  * This file is part of MPlayer.
7  *
8  * MPlayer is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * MPlayer is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License along
19  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21  */
22 
23 #include <stdlib.h>
24 #include <string.h>
25 #include <unistd.h>
26 #include <stdlib.h>
27 #include <stdio.h>
28 #include <sys/types.h>
29 #include <ctype.h>
30 #include "config.h"
31 #if !HAVE_WINSOCK2_H
32 #include <netinet/in.h>
33 #include <sys/socket.h>
34 #include <arpa/inet.h>
35 #else
36 #include <winsock2.h>
37 #include <ws2tcpip.h>
38 #endif
39 #include <errno.h>
40 
41 #include "libmpdemux/demuxer.h"
42 #include "network.h"
43 #include "stream.h"
44 #include "tcp.h"
45 #include "librtsp/rtsp.h"
46 #include "librtsp/rtsp_session.h"
47 
48 #define RTSP_DEFAULT_PORT 554
49 
50 static int
rtsp_streaming_read(int fd,char * buffer,int size,streaming_ctrl_t * stream_ctrl)51 rtsp_streaming_read (int fd, char *buffer,
52                      int size, streaming_ctrl_t *stream_ctrl)
53 {
54   return rtsp_session_read (stream_ctrl->data, buffer, size);
55 }
56 
57 static int
rtsp_streaming_start(stream_t * stream)58 rtsp_streaming_start (stream_t *stream)
59 {
60   int fd;
61   rtsp_session_t *rtsp;
62   char *mrl;
63   char *file;
64   int port;
65   int redirected, temp;
66 
67   if (!stream)
68     return -1;
69 
70   /* counter so we don't get caught in infinite redirections */
71   temp = 5;
72 
73   do {
74     redirected = 0;
75 
76     fd = connect2Server (stream->streaming_ctrl->url->hostname,
77                          port = (stream->streaming_ctrl->url->port ?
78                                  stream->streaming_ctrl->url->port :
79                                  RTSP_DEFAULT_PORT), 1);
80 
81     if (fd < 0 && !stream->streaming_ctrl->url->port)
82       fd = connect2Server (stream->streaming_ctrl->url->hostname,
83                            port = 7070, 1);
84 
85     if (fd < 0)
86       return -1;
87 
88     file = stream->streaming_ctrl->url->file;
89     if (file[0] == '/')
90       file++;
91 
92     mrl = malloc (strlen (stream->streaming_ctrl->url->hostname)
93                   + strlen (file) + 16);
94 
95     sprintf (mrl, "rtsp://%s:%i/%s",
96              stream->streaming_ctrl->url->hostname, port, file);
97 
98     rtsp = rtsp_session_start (fd, &mrl, file,
99                                stream->streaming_ctrl->url->hostname,
100                                port, &redirected,
101                                stream->streaming_ctrl->bandwidth,
102                                stream->streaming_ctrl->url->username,
103                                stream->streaming_ctrl->url->password);
104 
105     if (redirected == 1)
106     {
107       url_free (stream->streaming_ctrl->url);
108       stream->streaming_ctrl->url = url_new (mrl);
109       closesocket (fd);
110     }
111 
112     free (mrl);
113     temp--;
114   } while ((redirected != 0) && (temp > 0));
115 
116   if (!rtsp)
117     return -1;
118 
119   stream->fd = fd;
120   stream->streaming_ctrl->data = rtsp;
121 
122   stream->streaming_ctrl->streaming_read = rtsp_streaming_read;
123   stream->streaming_ctrl->streaming_seek = NULL;
124   stream->streaming_ctrl->prebuffer_size = 128*1024;  // 640 KBytes
125   stream->streaming_ctrl->buffering = 1;
126   stream->streaming_ctrl->status = streaming_playing_e;
127 
128   return 0;
129 }
130 
131 static void
rtsp_streaming_close(struct stream * s)132 rtsp_streaming_close (struct stream *s)
133 {
134   rtsp_session_t *rtsp = NULL;
135 
136   rtsp = (rtsp_session_t *) s->streaming_ctrl->data;
137   if (rtsp)
138     rtsp_session_end (rtsp);
139 }
140 
141 static int
rtsp_streaming_open(stream_t * stream,int mode,void * opts,int * file_format)142 rtsp_streaming_open (stream_t *stream, int mode, void *opts, int *file_format)
143 {
144   mp_msg (MSGT_OPEN, MSGL_V, "STREAM_RTSP, URL: %s\n", stream->url);
145   stream->streaming_ctrl = streaming_ctrl_new ();
146   if (!stream->streaming_ctrl)
147     return STREAM_ERROR;
148 
149   stream->streaming_ctrl->bandwidth = network_bandwidth;
150   stream->streaming_ctrl->url = url_new_with_proxy(stream->url);
151 
152   stream->fd = -1;
153   index_mode = -1; /* prevent most RTSP streams from locking due to -idx */
154   if (rtsp_streaming_start (stream) < 0)
155   {
156     streaming_ctrl_free (stream->streaming_ctrl);
157     stream->streaming_ctrl = NULL;
158     return STREAM_UNSUPPORTED;
159   }
160 
161   fixup_network_stream_cache (stream);
162   stream->type = STREAMTYPE_STREAM;
163   stream->close = rtsp_streaming_close;
164 
165   return STREAM_OK;
166 }
167 
168 const stream_info_t stream_info_rtsp = {
169   "RTSP streaming",
170   "rtsp",
171   "Benjamin Zores, Roberto Togni",
172   "ported from xine",
173   rtsp_streaming_open,
174   {"rtsp", NULL},
175   NULL,
176   0 /* Urls are an option string */
177 };
178