overview.sk: update to 0.2.13
[paraslash.git] / ortp_send.c
1 /*
2 * Copyright (C) 2005-2006 Andre Noll <maan@systemlinux.org>
3 *
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.
8 *
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.
13 *
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.
17 */
18
19 /** \file ortp_send.c para_server's ortp sender */
20
21 #include <ortp/ortp.h>
22
23 #include "server.cmdline.h"
24 #include "server.h"
25 #include "afs.h"
26 #include "send.h"
27 #include "list.h"
28 #include "ortp.h"
29 #include "string.h"
30
31 /** \cond convert in_addr to ascii */
32 #define TARGET_ADDR(oc) inet_ntoa((oc)->addr)
33 /** \endcond */
34
35 extern struct gengetopt_args_info conf;
36
37 /** describes one entry in the list of targets for the ortp sender */
38 struct ortp_target {
39 /** address info */
40 struct in_addr addr;
41 /** whether the ortp sender is activated */
42 int status;
43 /** the ortp timestamp increases by this amount */
44 int chunk_ts;
45 /** the currently used timestamp for this target */
46 int last_ts;
47 /** the position of this target in the list of targets */
48 struct list_head node;
49 /** the UDP port */
50 int port;
51 /** non-zero if at least one chunk has been sent to this target */
52 int streaming;
53 /** the session pointer from libortp */
54 RtpSession *session;
55 };
56
57 static struct list_head targets;
58 static struct sender *self;
59
60 static void ortp_delete_target(struct ortp_target *ot, const char *msg)
61 {
62 PARA_NOTICE_LOG("deleting %s:%d (%s) from list\n", TARGET_ADDR(ot),
63 ot->port, msg);
64 if (ot->session) {
65 rtp_session_destroy(ot->session);
66 ot->session = NULL;
67 }
68 list_del(&ot->node);
69 free(ot);
70 }
71
72 static void ortp_send_buf(char *buf, int len, long unsigned chunks_sent)
73 {
74 struct ortp_target *ot, *tmp;
75 int ret;
76
77 list_for_each_entry_safe(ot, tmp, &targets, node) {
78 int ts;
79 if (!ot->session)
80 continue;
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);
84 ot->last_ts = ts;
85 if (ret < 0)
86 ortp_delete_target(ot, "send error");
87 if (ret != len +12)
88 PARA_NOTICE_LOG("short write %d\n", ret);
89 }
90 }
91
92 static void ortp_init_session(struct ortp_target *ot)
93 {
94 RtpSession *s;
95 int ret;
96
97 PARA_NOTICE_LOG("sending to udp %s:%d\n", TARGET_ADDR(ot), ot->port);
98 ot->session = rtp_session_new(RTP_SESSION_SENDONLY);
99 if (!ot->session)
100 return;
101 s = ot->session;
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);
106 }
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);
110 if (ret < 0) {
111 rtp_session_destroy(ot->session);
112 ot->session = NULL;
113 }
114 }
115
116 /* called by afs */
117 static void ortp_shutdown_targets(void)
118 {
119 char buf[ORTP_AUDIO_HEADER_LEN];
120 struct ortp_target *ot, *tmp;
121
122 WRITE_PACKET_TYPE(buf, ORTP_EOF);
123 list_for_each_entry_safe(ot, tmp, &targets, node) {
124 if (!ot->session || !ot->streaming)
125 continue;
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);
130 ot->streaming = 0;
131 ot->chunk_ts = 0;
132 rtp_session_reset(ot->session);
133 }
134 }
135
136 static int need_extra_header(long unsigned current_chunk)
137 {
138 static struct timeval last_header;
139 struct timeval now, diff;
140
141 if (!current_chunk)
142 return 0;
143 gettimeofday(&now, NULL);
144 tv_diff(&now, &last_header, &diff);
145 if (tv2ms(&diff) < conf.ortp_header_interval_arg)
146 return 0;
147 last_header = now;
148 return 1;
149 }
150
151 static void ortp_send(long unsigned current_chunk, long unsigned chunks_sent,
152 const char *buf, size_t len)
153 {
154 struct ortp_target *ot, *tmp;
155 size_t sendbuf_len;
156 int header_len = 0;
157 int packet_type = ORTP_DATA;
158 char *sendbuf, *header_buf = NULL;
159 struct timeval *chunk_tv;
160
161 if (self->status != SENDER_ON)
162 return;
163 chunk_tv = afs_chunk_time();
164 if (!chunk_tv)
165 return;
166 list_for_each_entry_safe(ot, tmp, &targets, node) {
167 if (!ot->session) {
168 ortp_init_session(ot);
169 if (!ot->session)
170 continue;
171 }
172 if (!ot->chunk_ts)
173 ot->chunk_ts = rtp_session_time_to_ts(ot->session,
174 tv2ms(chunk_tv));
175 // PARA_DEBUG_LOG("len: %d, ts: %lu, ts: %d\n",
176 // len, ot->chunk_ts * chunks_sent, ot->chunk_ts);
177 ot->streaming = 1;
178 }
179 if (list_empty(&targets))
180 return;
181 header_buf = afs_get_header(&header_len);
182 if (!need_extra_header(current_chunk))
183 header_len = 0;
184 sendbuf_len = ORTP_AUDIO_HEADER_LEN + header_len + len;
185 sendbuf = para_malloc(sendbuf_len);
186 if (!current_chunk)
187 packet_type = ORTP_BOF;
188 else if (header_len)
189 packet_type = ORTP_HEADER;
190 WRITE_PACKET_TYPE(sendbuf, packet_type);
191 WRITE_CHUNK_TIME(sendbuf, chunk_tv->tv_usec);
192 WRITE_STREAM_TYPE(sendbuf, header_buf? 1 : 0);
193 WRITE_HEADER_LEN(sendbuf, header_len);
194 if (header_len)
195 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN, header_buf,
196 header_len);
197 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN + header_len, buf, len);
198 ortp_send_buf(sendbuf, sendbuf_len, chunks_sent);
199 free(sendbuf);
200 }
201
202 static int ortp_com_on(__a_unused struct sender_command_data *scd)
203 {
204
205 self->status = SENDER_ON;
206 return 1;
207 }
208
209 static int ortp_com_off(__a_unused struct sender_command_data *scd)
210 {
211 ortp_shutdown_targets();
212 self->status = SENDER_OFF;
213 return 1;
214 }
215
216 static int ortp_com_delete(struct sender_command_data *scd)
217 {
218 char *a = para_strdup(inet_ntoa(scd->addr));
219 struct ortp_target *ot, *tmp;
220 list_for_each_entry_safe(ot, tmp, &targets, node) {
221 if (scd->port != ot->port)
222 continue;
223 if (strcmp(TARGET_ADDR(ot), a))
224 continue;
225 ortp_delete_target(ot, "com_delete");
226 }
227 return 1;
228 }
229
230 static void ortp_add_target(int port, struct in_addr *addr)
231 {
232 struct ortp_target *ot = para_calloc(sizeof(struct ortp_target));
233 ot->port = port;
234 ot->addr = *addr;
235 PARA_INFO_LOG("adding to target list (%s:%d)\n",
236 TARGET_ADDR(ot), ot->port);
237 list_add(&ot->node, &targets);
238 }
239
240 static int ortp_com_add(struct sender_command_data *scd)
241 {
242 int port = (scd->port > 0)? scd->port : conf.ortp_default_port_arg;
243 ortp_add_target(port, &scd->addr);
244 return 1;
245 }
246
247 static char *ortp_info(void)
248 {
249 struct ortp_target *ot;
250 char *ret, *tgts = NULL;
251
252 list_for_each_entry(ot, &targets, node) {
253 char *tmp = make_message("%s%s:%d ", tgts? tgts : "",
254 TARGET_ADDR(ot), ot->port);
255 free(tgts);
256 tgts = tmp;
257 }
258 ret = make_message(
259 "ortp status: %s\n"
260 "ortp default port: udp %d\n"
261 "ortp targets: %s\n",
262 (self->status == SENDER_ON)? "on" : "off",
263 conf.ortp_default_port_arg,
264 tgts? tgts : "(none)"
265 );
266 free(tgts);
267 return ret;
268 }
269
270 static void ortp_init_target_list(void)
271 {
272 int i;
273
274 INIT_LIST_HEAD(&targets);
275 for (i = 0; i < conf.ortp_target_given; i++) {
276 char *arg = para_strdup(conf.ortp_target_arg[i]);
277 char *p = strchr(arg, ':');
278 int port;
279 struct in_addr addr;
280
281 if (!p)
282 goto err;
283 *p = '\0';
284 if (!inet_aton(arg, &addr))
285 goto err;
286 port = atoi(++p);
287 if (port < 0 || port > 65535)
288 port = conf.ortp_default_port_arg;
289 ortp_add_target(port, &addr);
290 goto success;
291 err:
292 PARA_CRIT_LOG("syntax error for ortp_target option "
293 "#%d, ignoring\n", i);
294 success:
295 free(arg);
296 continue;
297 }
298 }
299
300 static void ortp_pre_select(__a_unused int *max_fileno, __a_unused fd_set *rfds,
301 __a_unused fd_set *wfds)
302 {
303 return;
304 }
305
306 static char *ortp_help(void)
307 {
308 return make_message(
309 "usage: {on|off}\n"
310 "usage: {add|delete} IP port\n"
311 "example: add 224.0.1.38 1500 (LAN-streaming)\n"
312 );
313 }
314
315 /**
316 * the init function of para_server's ortp sender
317 *
318 * \param s pointer to the http sender struct
319 *
320 * It initializes all function pointers of \a s and the list of ortp targets.
321 */
322 void ortp_send_init(struct sender *s)
323 {
324 ortp_init();
325 INIT_LIST_HEAD(&targets);
326 s->info = ortp_info;
327 s->help = ortp_help;
328 s->send = ortp_send;
329 s->pre_select = ortp_pre_select;
330 s->post_select = NULL;
331 s->shutdown_clients = ortp_shutdown_targets;
332 s->client_cmds[SENDER_ON] = ortp_com_on;
333 s->client_cmds[SENDER_OFF] = ortp_com_off;
334 s->client_cmds[SENDER_DENY] = NULL;
335 s->client_cmds[SENDER_ALLOW] = NULL;
336 s->client_cmds[SENDER_ADD] = ortp_com_add;
337 s->client_cmds[SENDER_DELETE] = ortp_com_delete;
338 self = s;
339 s->status = SENDER_OFF;
340 ortp_init_target_list();
341 if (!conf.ortp_no_autostart_given)
342 s->status = SENDER_ON;
343 PARA_DEBUG_LOG("%s", "ortp sender init complete\n");
344 }