use %zd instead of %d for size_t
[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
22 #include "server.cmdline.h"
23 #include "server.h"
24 #include "afs.h"
25 #include "send.h"
26 #include "list.h"
27 #include <ortp/ortp.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 int numtargets;
58 static struct list_head targets;
59 static struct sender *self;
60
61 static void ortp_delete_target(struct ortp_target *ot, const char *msg)
62 {
63 PARA_NOTICE_LOG("deleting %s:%d (%s) from list\n", TARGET_ADDR(ot),
64 ot->port, msg);
65 if (ot->session) {
66 rtp_session_destroy(ot->session);
67 ot->session = NULL;
68 }
69 numtargets--;
70 list_del(&ot->node);
71 free(ot);
72 }
73
74 static void ortp_send_buf(char *buf, int len, long unsigned chunks_sent)
75 {
76 struct ortp_target *ot, *tmp;
77 int ret;
78
79 list_for_each_entry_safe(ot, tmp, &targets, node) {
80 struct timeval now;
81 int ts;
82 gettimeofday(&now, NULL);
83 if (!ot->session)
84 continue;
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);
88 ot->last_ts = ts;
89 if (ret < 0)
90 ortp_delete_target(ot, "send error");
91 if (ret != len +12)
92 PARA_NOTICE_LOG("short write %d\n", ret);
93 }
94 }
95
96 static void ortp_init_session(struct ortp_target *ot)
97 {
98 RtpSession *s;
99 int ret;
100
101 PARA_NOTICE_LOG("sending to udp %s:%d\n", TARGET_ADDR(ot), ot->port);
102 ot->session = rtp_session_new(RTP_SESSION_SENDONLY);
103 if (!ot->session)
104 return;
105 s = ot->session;
106 // rtp_session_set_jitter_compensation(ot->session, 100);
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[2];
120 struct ortp_target *ot, *tmp;
121
122 buf[0] = 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", TARGET_ADDR(ot), ot->port,
127 ot->last_ts);
128 rtp_session_send_with_ts(ot->session, buf, 1, ot->last_ts);
129 ot->streaming = 0;
130 ot->chunk_ts = 0;
131 rtp_session_reset(ot->session);
132 }
133 }
134
135 static int need_extra_header(struct audio_format *af, long unsigned chunks_sent)
136 {
137 /* FIXME: No need to compute this on every run */
138 int mod = conf.ortp_header_interval_arg / (tv2ms(&af->chunk_tv) + 1);
139 if (mod && (chunks_sent % mod))
140 return 0;
141 return 1;
142 }
143
144 static void ortp_send(struct audio_format *af, long unsigned current_chunk,
145 long unsigned chunks_sent, const char *buf, size_t len)
146 {
147 struct ortp_target *ot, *tmp;
148 size_t sendbuf_len;
149 int header_len = 0;
150 int packet_type = ORTP_DATA, stream_type = af && af->get_header_info; /* header stream? */
151 char *sendbuf, *header_buf = NULL;
152
153 if (self->status != SENDER_ON)
154 return;
155 list_for_each_entry_safe(ot, tmp, &targets, node) {
156 if (!ot->session) {
157 ortp_init_session(ot);
158 if (!ot->session)
159 continue;
160 }
161 if (!ot->chunk_ts)
162 ot->chunk_ts = rtp_session_time_to_ts(ot->session, tv2ms(&af->chunk_tv));
163 // PARA_DEBUG_LOG("len: %d, af: %p, ts: %d\n", len, af, ot->chunk_ts);
164 ot->streaming = 1;
165 }
166 if (list_empty(&targets))
167 return;
168 if (stream_type) {
169 header_buf = af->get_header_info(&header_len);
170 if (!need_extra_header(af, chunks_sent))
171 header_len = 0;
172 }
173 sendbuf_len = ORTP_AUDIO_HEADER_LEN + header_len + len;
174 sendbuf = para_malloc(sendbuf_len);
175 if (!current_chunk)
176 packet_type = ORTP_BOF;
177 else if (header_len)
178 packet_type = ORTP_HEADER;
179 WRITE_PACKET_TYPE(sendbuf, packet_type);
180 WRITE_CHUNK_TIME(sendbuf, af->chunk_tv.tv_usec);
181 WRITE_STREAM_TYPE(sendbuf, stream_type);
182 WRITE_HEADER_LEN(sendbuf, header_len);
183 if (header_len)
184 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN, header_buf,
185 header_len);
186 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN + header_len, buf, len);
187 ortp_send_buf(sendbuf, sendbuf_len, chunks_sent);
188 free(sendbuf);
189 }
190
191 static int ortp_com_on(struct sender_command_data *scd)
192 {
193
194 self->status = SENDER_ON;
195 return 1;
196 }
197
198 static int ortp_com_off(struct sender_command_data *scd)
199 {
200 ortp_shutdown_targets();
201 self->status = SENDER_OFF;
202 return 1;
203 }
204
205 static int ortp_com_delete(struct sender_command_data *scd)
206 {
207 char *a = para_strdup(inet_ntoa(scd->addr));
208 struct ortp_target *ot, *tmp;
209 list_for_each_entry_safe(ot, tmp, &targets, node) {
210 if (scd->port != ot->port)
211 continue;
212 if (strcmp(TARGET_ADDR(ot), a))
213 continue;
214 ortp_delete_target(ot, "com_delete");
215 }
216 return 1;
217 }
218
219 static void ortp_add_target(int port, struct in_addr *addr)
220 {
221 struct ortp_target *ot = para_calloc(sizeof(struct ortp_target));
222 ot->port = port;
223 ot->addr = *addr;
224 PARA_INFO_LOG("adding to target list (%s:%d)\n",
225 TARGET_ADDR(ot), ot->port);
226 list_add(&ot->node, &targets);
227 }
228
229 static int ortp_com_add(struct sender_command_data *scd)
230 {
231 int port = (scd->port > 0)? scd->port : conf.ortp_default_port_arg;
232 ortp_add_target(port, &scd->addr);
233 return 1;
234 }
235
236 static char *ortp_info(void)
237 {
238 struct ortp_target *ot;
239 char *ret, *tgts = NULL;
240
241 list_for_each_entry(ot, &targets, node) {
242 char *tmp = make_message("%s%s:%d ", tgts? tgts : "",
243 TARGET_ADDR(ot), ot->port);
244 free(tgts);
245 tgts = tmp;
246 }
247 ret = make_message(
248 "ortp status: %s\n"
249 "ortp default port: udp %d\n"
250 "ortp targets: %s\n",
251 (self->status == SENDER_ON)? "on" : "off",
252 conf.ortp_default_port_arg,
253 tgts? tgts : "(none)"
254 );
255 free(tgts);
256 return ret;
257 }
258
259 static void ortp_init_target_list(void)
260 {
261 int i;
262
263 INIT_LIST_HEAD(&targets);
264 for (i = 0; i < conf.ortp_target_given; i++) {
265 char *arg = para_strdup(conf.ortp_target_arg[i]);
266 char *p = strchr(arg, ':');
267 int port;
268 struct in_addr addr;
269
270 if (!p)
271 goto err;
272 *p = '\0';
273 if (!inet_aton(arg, &addr))
274 goto err;
275 port = atoi(++p);
276 if (port < 0 || port > 65535)
277 port = conf.ortp_default_port_arg;
278 ortp_add_target(port, &addr);
279 goto success;
280 err:
281 PARA_CRIT_LOG("syntax error for ortp_target option "
282 "#%d, ignoring\n", i);
283 success:
284 free(arg);
285 continue;
286 }
287 }
288
289 static void ortp_pre_select(struct audio_format *af, int *max_fileno,
290 fd_set *rfds, fd_set *wfds)
291 {
292 return;
293 }
294
295 static char *ortp_help(void)
296 {
297 return make_message(
298 "usage: {on|off}\n"
299 "usage: {add|delete} IP port\n"
300 "example: add 224.0.1.38 1500 (LAN-streaming)\n"
301 );
302 }
303
304 /**
305 * the init function of para_server's ortp sender
306 *
307 * \param s pointer to the http sender struct
308 *
309 * It initializes all function pointers of \a s and the list of ortp targets.
310 */
311 void ortp_send_init(struct sender *s)
312 {
313 ortp_init();
314 ortp_set_debug_file("oRTP", NULL);
315 INIT_LIST_HEAD(&targets);
316 s->info = ortp_info;
317 s->help = ortp_help;
318 s->send = ortp_send;
319 s->pre_select = ortp_pre_select;
320 s->post_select = NULL;
321 s->shutdown_clients = ortp_shutdown_targets;
322 s->client_cmds[SENDER_ON] = ortp_com_on;
323 s->client_cmds[SENDER_OFF] = ortp_com_off;
324 s->client_cmds[SENDER_DENY] = NULL;
325 s->client_cmds[SENDER_ALLOW] = NULL;
326 s->client_cmds[SENDER_ADD] = ortp_com_add;
327 s->client_cmds[SENDER_DELETE] = ortp_com_delete;
328 self = s;
329 s->status = SENDER_OFF;
330 ortp_init_target_list();
331 if (!conf.ortp_no_autostart_given)
332 s->status = SENDER_ON;
333 PARA_DEBUG_LOG("%s", "ortp sender init complete\n");
334 }