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 int numtargets
;
58 static struct list_head targets
;
59 static struct sender
*self
;
61 static void ortp_delete_target(struct ortp_target
*ot
, const char *msg
)
63 PARA_NOTICE_LOG("deleting %s:%d (%s) from list\n", TARGET_ADDR(ot
),
66 rtp_session_destroy(ot
->session
);
74 static void ortp_send_buf(char *buf
, int len
, long unsigned chunks_sent
)
76 struct ortp_target
*ot
, *tmp
;
79 list_for_each_entry_safe(ot
, tmp
, &targets
, node
) {
82 gettimeofday(&now
, NULL
);
85 WRITE_CHUNK_TS(buf
, ot
->chunk_ts
);
86 ts
= ot
->chunk_ts
* chunks_sent
;
87 ret
= rtp_session_send_with_ts(ot
->session
, buf
, len
, ts
);
90 ortp_delete_target(ot
, "send error");
92 PARA_NOTICE_LOG("short write %d\n", ret
);
96 static void ortp_init_session(struct ortp_target
*ot
)
101 PARA_NOTICE_LOG("sending to udp %s:%d\n", TARGET_ADDR(ot
), ot
->port
);
102 ot
->session
= rtp_session_new(RTP_SESSION_SENDONLY
);
106 if (conf
.ortp_jitter_compensation_arg
) {
107 rtp_session_enable_adaptive_jitter_compensation(ot
->session
, TRUE
);
108 rtp_session_set_jitter_compensation(ot
->session
,
109 conf
.ortp_jitter_compensation_arg
);
111 /* always successful */
112 rtp_session_set_send_payload_type(s
, PAYLOAD_AUDIO_CONTINUOUS
);
113 ret
= rtp_session_set_remote_addr(s
, TARGET_ADDR(ot
), ot
->port
);
115 rtp_session_destroy(ot
->session
);
121 static void ortp_shutdown_targets(void)
124 struct ortp_target
*ot
, *tmp
;
127 list_for_each_entry_safe(ot
, tmp
, &targets
, node
) {
128 if (!ot
->session
|| !ot
->streaming
)
130 PARA_INFO_LOG("sending eof to ortp target %s:%d, ts = %d\n", TARGET_ADDR(ot
), ot
->port
,
132 rtp_session_send_with_ts(ot
->session
, buf
, 1, ot
->last_ts
);
135 rtp_session_reset(ot
->session
);
139 static int need_extra_header(struct audio_format
*af
, long unsigned chunks_sent
)
141 /* FIXME: No need to compute this on every run */
142 int mod
= conf
.ortp_header_interval_arg
/ (tv2ms(&af
->chunk_tv
) + 1);
143 if (mod
&& (chunks_sent
% mod
))
148 static void ortp_send(struct audio_format
*af
, long unsigned current_chunk
,
149 long unsigned chunks_sent
, const char *buf
, size_t len
)
151 struct ortp_target
*ot
, *tmp
;
154 int packet_type
= ORTP_DATA
, stream_type
= af
&& af
->get_header_info
; /* header stream? */
155 char *sendbuf
, *header_buf
= NULL
;
157 if (self
->status
!= SENDER_ON
)
159 list_for_each_entry_safe(ot
, tmp
, &targets
, node
) {
161 ortp_init_session(ot
);
166 ot
->chunk_ts
= rtp_session_time_to_ts(ot
->session
,
167 tv2ms(&af
->chunk_tv
));
168 // PARA_DEBUG_LOG("len: %d, ts: %lu, ts: %d\n",
169 // len, ot->chunk_ts * chunks_sent, ot->chunk_ts);
172 if (list_empty(&targets
))
175 header_buf
= af
->get_header_info(&header_len
);
176 if (!need_extra_header(af
, chunks_sent
))
179 sendbuf_len
= ORTP_AUDIO_HEADER_LEN
+ header_len
+ len
;
180 sendbuf
= para_malloc(sendbuf_len
);
182 packet_type
= ORTP_BOF
;
184 packet_type
= ORTP_HEADER
;
185 WRITE_PACKET_TYPE(sendbuf
, packet_type
);
186 WRITE_CHUNK_TIME(sendbuf
, af
->chunk_tv
.tv_usec
);
187 WRITE_STREAM_TYPE(sendbuf
, stream_type
);
188 WRITE_HEADER_LEN(sendbuf
, header_len
);
190 memcpy(sendbuf
+ ORTP_AUDIO_HEADER_LEN
, header_buf
,
192 memcpy(sendbuf
+ ORTP_AUDIO_HEADER_LEN
+ header_len
, buf
, len
);
193 ortp_send_buf(sendbuf
, sendbuf_len
, chunks_sent
);
197 static int ortp_com_on(struct sender_command_data
*scd
)
200 self
->status
= SENDER_ON
;
204 static int ortp_com_off(struct sender_command_data
*scd
)
206 ortp_shutdown_targets();
207 self
->status
= SENDER_OFF
;
211 static int ortp_com_delete(struct sender_command_data
*scd
)
213 char *a
= para_strdup(inet_ntoa(scd
->addr
));
214 struct ortp_target
*ot
, *tmp
;
215 list_for_each_entry_safe(ot
, tmp
, &targets
, node
) {
216 if (scd
->port
!= ot
->port
)
218 if (strcmp(TARGET_ADDR(ot
), a
))
220 ortp_delete_target(ot
, "com_delete");
225 static void ortp_add_target(int port
, struct in_addr
*addr
)
227 struct ortp_target
*ot
= para_calloc(sizeof(struct ortp_target
));
230 PARA_INFO_LOG("adding to target list (%s:%d)\n",
231 TARGET_ADDR(ot
), ot
->port
);
232 list_add(&ot
->node
, &targets
);
235 static int ortp_com_add(struct sender_command_data
*scd
)
237 int port
= (scd
->port
> 0)? scd
->port
: conf
.ortp_default_port_arg
;
238 ortp_add_target(port
, &scd
->addr
);
242 static char *ortp_info(void)
244 struct ortp_target
*ot
;
245 char *ret
, *tgts
= NULL
;
247 list_for_each_entry(ot
, &targets
, node
) {
248 char *tmp
= make_message("%s%s:%d ", tgts
? tgts
: "",
249 TARGET_ADDR(ot
), ot
->port
);
255 "ortp default port: udp %d\n"
256 "ortp targets: %s\n",
257 (self
->status
== SENDER_ON
)? "on" : "off",
258 conf
.ortp_default_port_arg
,
259 tgts
? tgts
: "(none)"
265 static void ortp_init_target_list(void)
269 INIT_LIST_HEAD(&targets
);
270 for (i
= 0; i
< conf
.ortp_target_given
; i
++) {
271 char *arg
= para_strdup(conf
.ortp_target_arg
[i
]);
272 char *p
= strchr(arg
, ':');
279 if (!inet_aton(arg
, &addr
))
282 if (port
< 0 || port
> 65535)
283 port
= conf
.ortp_default_port_arg
;
284 ortp_add_target(port
, &addr
);
287 PARA_CRIT_LOG("syntax error for ortp_target option "
288 "#%d, ignoring\n", i
);
295 static void ortp_pre_select(struct audio_format
*af
, int *max_fileno
,
296 fd_set
*rfds
, fd_set
*wfds
)
301 static char *ortp_help(void)
305 "usage: {add|delete} IP port\n"
306 "example: add 224.0.1.38 1500 (LAN-streaming)\n"
311 * the init function of para_server's ortp sender
313 * \param s pointer to the http sender struct
315 * It initializes all function pointers of \a s and the list of ortp targets.
317 void ortp_send_init(struct sender
*s
)
320 INIT_LIST_HEAD(&targets
);
324 s
->pre_select
= ortp_pre_select
;
325 s
->post_select
= NULL
;
326 s
->shutdown_clients
= ortp_shutdown_targets
;
327 s
->client_cmds
[SENDER_ON
] = ortp_com_on
;
328 s
->client_cmds
[SENDER_OFF
] = ortp_com_off
;
329 s
->client_cmds
[SENDER_DENY
] = NULL
;
330 s
->client_cmds
[SENDER_ALLOW
] = NULL
;
331 s
->client_cmds
[SENDER_ADD
] = ortp_com_add
;
332 s
->client_cmds
[SENDER_DELETE
] = ortp_com_delete
;
334 s
->status
= SENDER_OFF
;
335 ortp_init_target_list();
336 if (!conf
.ortp_no_autostart_given
)
337 s
->status
= SENDER_ON
;
338 PARA_DEBUG_LOG("%s", "ortp sender init complete\n");