2 * Copyright (C) 2005-2006 Andre Noll <maan@systemlinux.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
19 /** \file ortp_send.c para_server's ortp sender */
21 #include <ortp/ortp.h>
23 #include "server.cmdline.h"
31 /** \cond convert in_addr to ascii */
32 #define TARGET_ADDR(oc) inet_ntoa((oc)->addr)
35 extern struct gengetopt_args_info conf
;
37 /** describes one entry in the list of targets for the ortp sender */
41 /** whether the ortp sender is activated */
43 /** the ortp timestamp increases by this amount */
45 /** the currently used timestamp for this target */
47 /** the position of this target in the list of targets */
48 struct list_head node
;
51 /** non-zero if at least one chunk has been sent to this target */
53 /** the session pointer from libortp */
57 static struct list_head targets
;
58 static struct sender
*self
;
60 static void ortp_delete_target(struct ortp_target
*ot
, const char *msg
)
62 PARA_NOTICE_LOG("deleting %s:%d (%s) from list\n", TARGET_ADDR(ot
),
65 rtp_session_destroy(ot
->session
);
72 static void ortp_send_buf(char *buf
, int len
, long unsigned chunks_sent
)
74 struct ortp_target
*ot
, *tmp
;
77 list_for_each_entry_safe(ot
, tmp
, &targets
, node
) {
81 WRITE_CHUNK_TS(buf
, ot
->chunk_ts
);
82 ts
= ot
->chunk_ts
* chunks_sent
;
83 ret
= rtp_session_send_with_ts(ot
->session
, buf
, len
, ts
);
86 ortp_delete_target(ot
, "send error");
88 PARA_NOTICE_LOG("short write %d\n", ret
);
92 static void ortp_init_session(struct ortp_target
*ot
)
97 PARA_NOTICE_LOG("sending to udp %s:%d\n", TARGET_ADDR(ot
), ot
->port
);
98 ot
->session
= rtp_session_new(RTP_SESSION_SENDONLY
);
102 if (conf
.ortp_jitter_compensation_arg
) {
103 rtp_session_enable_adaptive_jitter_compensation(ot
->session
, TRUE
);
104 rtp_session_set_jitter_compensation(ot
->session
,
105 conf
.ortp_jitter_compensation_arg
);
107 /* always successful */
108 rtp_session_set_send_payload_type(s
, PAYLOAD_AUDIO_CONTINUOUS
);
109 ret
= rtp_session_set_remote_addr(s
, TARGET_ADDR(ot
), ot
->port
);
111 rtp_session_destroy(ot
->session
);
117 static void ortp_shutdown_targets(void)
119 char buf
[ORTP_AUDIO_HEADER_LEN
];
120 struct ortp_target
*ot
, *tmp
;
122 WRITE_PACKET_TYPE(buf
, ORTP_EOF
);
123 list_for_each_entry_safe(ot
, tmp
, &targets
, node
) {
124 if (!ot
->session
|| !ot
->streaming
)
126 PARA_INFO_LOG("sending eof to ortp target %s:%d, ts = %d\n",
127 TARGET_ADDR(ot
), ot
->port
, ot
->last_ts
);
128 rtp_session_send_with_ts(ot
->session
, buf
,
129 ORTP_AUDIO_HEADER_LEN
, ot
->last_ts
);
132 rtp_session_reset(ot
->session
);
136 static int need_extra_header(struct audio_format
*af
, long unsigned chunks_sent
)
138 /* FIXME: No need to compute this on every run */
139 int mod
= conf
.ortp_header_interval_arg
/ (tv2ms(&af
->chunk_tv
) + 1);
140 if (mod
&& (chunks_sent
% mod
))
145 static void ortp_send(struct audio_format
*af
, long unsigned current_chunk
,
146 long unsigned chunks_sent
, const char *buf
, size_t len
)
148 struct ortp_target
*ot
, *tmp
;
151 int packet_type
= ORTP_DATA
, stream_type
= af
&& af
->get_header_info
; /* header stream? */
152 char *sendbuf
, *header_buf
= NULL
;
154 if (self
->status
!= SENDER_ON
)
156 list_for_each_entry_safe(ot
, tmp
, &targets
, node
) {
158 ortp_init_session(ot
);
163 ot
->chunk_ts
= rtp_session_time_to_ts(ot
->session
,
164 tv2ms(&af
->chunk_tv
));
165 // PARA_DEBUG_LOG("len: %d, ts: %lu, ts: %d\n",
166 // len, ot->chunk_ts * chunks_sent, ot->chunk_ts);
169 if (list_empty(&targets
))
172 header_buf
= af
->get_header_info(&header_len
);
173 if (!need_extra_header(af
, chunks_sent
))
176 sendbuf_len
= ORTP_AUDIO_HEADER_LEN
+ header_len
+ len
;
177 sendbuf
= para_malloc(sendbuf_len
);
179 packet_type
= ORTP_BOF
;
181 packet_type
= ORTP_HEADER
;
182 WRITE_PACKET_TYPE(sendbuf
, packet_type
);
183 WRITE_CHUNK_TIME(sendbuf
, af
->chunk_tv
.tv_usec
);
184 WRITE_STREAM_TYPE(sendbuf
, stream_type
);
185 WRITE_HEADER_LEN(sendbuf
, header_len
);
187 memcpy(sendbuf
+ ORTP_AUDIO_HEADER_LEN
, header_buf
,
189 memcpy(sendbuf
+ ORTP_AUDIO_HEADER_LEN
+ header_len
, buf
, len
);
190 ortp_send_buf(sendbuf
, sendbuf_len
, chunks_sent
);
194 static int ortp_com_on(__a_unused
struct sender_command_data
*scd
)
197 self
->status
= SENDER_ON
;
201 static int ortp_com_off(__a_unused
struct sender_command_data
*scd
)
203 ortp_shutdown_targets();
204 self
->status
= SENDER_OFF
;
208 static int ortp_com_delete(struct sender_command_data
*scd
)
210 char *a
= para_strdup(inet_ntoa(scd
->addr
));
211 struct ortp_target
*ot
, *tmp
;
212 list_for_each_entry_safe(ot
, tmp
, &targets
, node
) {
213 if (scd
->port
!= ot
->port
)
215 if (strcmp(TARGET_ADDR(ot
), a
))
217 ortp_delete_target(ot
, "com_delete");
222 static void ortp_add_target(int port
, struct in_addr
*addr
)
224 struct ortp_target
*ot
= para_calloc(sizeof(struct ortp_target
));
227 PARA_INFO_LOG("adding to target list (%s:%d)\n",
228 TARGET_ADDR(ot
), ot
->port
);
229 list_add(&ot
->node
, &targets
);
232 static int ortp_com_add(struct sender_command_data
*scd
)
234 int port
= (scd
->port
> 0)? scd
->port
: conf
.ortp_default_port_arg
;
235 ortp_add_target(port
, &scd
->addr
);
239 static char *ortp_info(void)
241 struct ortp_target
*ot
;
242 char *ret
, *tgts
= NULL
;
244 list_for_each_entry(ot
, &targets
, node
) {
245 char *tmp
= make_message("%s%s:%d ", tgts
? tgts
: "",
246 TARGET_ADDR(ot
), ot
->port
);
252 "ortp default port: udp %d\n"
253 "ortp targets: %s\n",
254 (self
->status
== SENDER_ON
)? "on" : "off",
255 conf
.ortp_default_port_arg
,
256 tgts
? tgts
: "(none)"
262 static void ortp_init_target_list(void)
266 INIT_LIST_HEAD(&targets
);
267 for (i
= 0; i
< conf
.ortp_target_given
; i
++) {
268 char *arg
= para_strdup(conf
.ortp_target_arg
[i
]);
269 char *p
= strchr(arg
, ':');
276 if (!inet_aton(arg
, &addr
))
279 if (port
< 0 || port
> 65535)
280 port
= conf
.ortp_default_port_arg
;
281 ortp_add_target(port
, &addr
);
284 PARA_CRIT_LOG("syntax error for ortp_target option "
285 "#%d, ignoring\n", i
);
292 static void ortp_pre_select(__a_unused
struct audio_format
*af
,
293 __a_unused
int *max_fileno
, __a_unused fd_set
*rfds
,
294 __a_unused fd_set
*wfds
)
299 static char *ortp_help(void)
303 "usage: {add|delete} IP port\n"
304 "example: add 224.0.1.38 1500 (LAN-streaming)\n"
309 * the init function of para_server's ortp sender
311 * \param s pointer to the http sender struct
313 * It initializes all function pointers of \a s and the list of ortp targets.
315 void ortp_send_init(struct sender
*s
)
318 INIT_LIST_HEAD(&targets
);
322 s
->pre_select
= ortp_pre_select
;
323 s
->post_select
= NULL
;
324 s
->shutdown_clients
= ortp_shutdown_targets
;
325 s
->client_cmds
[SENDER_ON
] = ortp_com_on
;
326 s
->client_cmds
[SENDER_OFF
] = ortp_com_off
;
327 s
->client_cmds
[SENDER_DENY
] = NULL
;
328 s
->client_cmds
[SENDER_ALLOW
] = NULL
;
329 s
->client_cmds
[SENDER_ADD
] = ortp_com_add
;
330 s
->client_cmds
[SENDER_DELETE
] = ortp_com_delete
;
332 s
->status
= SENDER_OFF
;
333 ortp_init_target_list();
334 if (!conf
.ortp_no_autostart_given
)
335 s
->status
= SENDER_ON
;
336 PARA_DEBUG_LOG("%s", "ortp sender init complete\n");