2 * Copyright (C) 2005-2007 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 /** describes one entry in the list of targets for the ortp sender */
39 /** whether the ortp sender is activated */
41 /** the ortp timestamp increases by this amount */
43 /** the currently used timestamp for this target */
45 /** the position of this target in the list of targets */
46 struct list_head node;
49 /** non-zero if at least one chunk has been sent to this target */
51 /** the session pointer from libortp */
55 static struct list_head targets;
56 static struct sender *self;
58 static void ortp_delete_target(struct ortp_target *ot, const char *msg)
60 PARA_NOTICE_LOG("deleting %s:%d (%s) from list\n", TARGET_ADDR(ot),
63 rtp_session_destroy(ot->session);
70 static void ortp_send_buf(char *buf, int len, long unsigned chunks_sent)
72 struct ortp_target *ot, *tmp;
75 list_for_each_entry_safe(ot, tmp, &targets, node) {
79 WRITE_CHUNK_TS(buf, ot->chunk_ts);
80 ts = ot->chunk_ts * chunks_sent;
81 ret = rtp_session_send_with_ts(ot->session,
82 (unsigned char*)buf, len, ts);
85 ortp_delete_target(ot, "send error");
87 PARA_NOTICE_LOG("short write %d\n", ret);
91 static int set_multicast(RtpSession *s)
93 unsigned char loop = 1;
96 ret = setsockopt(s->rtp.socket,
97 IPPROTO_IP, IP_MULTICAST_LOOP, &loop, sizeof(loop));
99 PARA_ERROR_LOG("IP_MULTICAST_LOOP error %d\n", ret);
105 static void ortp_init_session(struct ortp_target *ot)
110 PARA_NOTICE_LOG("sending to udp %s:%d\n", TARGET_ADDR(ot), ot->port);
111 ot->session = rtp_session_new(RTP_SESSION_SENDONLY);
115 if (conf.ortp_jitter_compensation_arg) {
116 rtp_session_enable_adaptive_jitter_compensation(ot->session, TRUE);
117 rtp_session_set_jitter_compensation(ot->session,
118 conf.ortp_jitter_compensation_arg);
120 /* always successful */
121 rtp_session_set_send_payload_type(s, PAYLOAD_AUDIO_CONTINUOUS);
122 ret = rtp_session_set_remote_addr(s, TARGET_ADDR(ot), ot->port);
124 rtp_session_destroy(ot->session);
132 static void ortp_shutdown_targets(void)
134 unsigned char buf[ORTP_AUDIO_HEADER_LEN];
135 struct ortp_target *ot, *tmp;
137 WRITE_PACKET_TYPE(buf, ORTP_EOF);
138 list_for_each_entry_safe(ot, tmp, &targets, node) {
139 if (!ot->session || !ot->streaming)
141 PARA_INFO_LOG("sending eof to ortp target %s:%d, ts = %d\n",
142 TARGET_ADDR(ot), ot->port, ot->last_ts);
143 rtp_session_send_with_ts(ot->session, buf,
144 ORTP_AUDIO_HEADER_LEN, ot->last_ts);
147 rtp_session_reset(ot->session);
151 static int need_extra_header(long unsigned current_chunk)
153 static struct timeval last_header;
154 struct timeval now, diff;
158 gettimeofday(&now, NULL);
159 tv_diff(&now, &last_header, &diff);
160 if (tv2ms(&diff) < conf.ortp_header_interval_arg)
166 static void ortp_send(long unsigned current_chunk, long unsigned chunks_sent,
167 const char *buf, size_t len)
169 struct ortp_target *ot, *tmp;
172 int packet_type = ORTP_DATA;
173 char *sendbuf, *header_buf = NULL;
174 struct timeval *chunk_tv;
176 if (self->status != SENDER_ON)
178 chunk_tv = vss_chunk_time();
181 list_for_each_entry_safe(ot, tmp, &targets, node) {
183 ortp_init_session(ot);
188 ot->chunk_ts = rtp_session_time_to_ts(ot->session,
190 // PARA_DEBUG_LOG("len: %d, ts: %lu, ts: %d\n",
191 // len, ot->chunk_ts * chunks_sent, ot->chunk_ts);
194 if (list_empty(&targets))
196 header_buf = vss_get_header(&header_len);
197 if (!need_extra_header(current_chunk))
199 sendbuf_len = ORTP_AUDIO_HEADER_LEN + header_len + len;
200 sendbuf = para_malloc(sendbuf_len);
202 packet_type = ORTP_BOF;
204 packet_type = ORTP_HEADER;
205 WRITE_PACKET_TYPE(sendbuf, packet_type);
206 WRITE_CHUNK_TIME(sendbuf, chunk_tv->tv_usec);
207 WRITE_STREAM_TYPE(sendbuf, header_buf? 1 : 0);
208 WRITE_HEADER_LEN(sendbuf, header_len);
210 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN, header_buf,
212 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN + header_len, buf, len);
213 ortp_send_buf(sendbuf, sendbuf_len, chunks_sent);
217 static int ortp_com_on(__a_unused struct sender_command_data *scd)
220 self->status = SENDER_ON;
224 static int ortp_com_off(__a_unused struct sender_command_data *scd)
226 ortp_shutdown_targets();
227 self->status = SENDER_OFF;
231 static int ortp_com_delete(struct sender_command_data *scd)
233 char *a = para_strdup(inet_ntoa(scd->addr));
234 struct ortp_target *ot, *tmp;
235 list_for_each_entry_safe(ot, tmp, &targets, node) {
236 if (scd->port != ot->port)
238 if (strcmp(TARGET_ADDR(ot), a))
240 ortp_delete_target(ot, "com_delete");
245 static void ortp_add_target(int port, struct in_addr *addr)
247 struct ortp_target *ot = para_calloc(sizeof(struct ortp_target));
250 PARA_INFO_LOG("adding to target list (%s:%d)\n",
251 TARGET_ADDR(ot), ot->port);
252 para_list_add(&ot->node, &targets);
255 static int ortp_com_add(struct sender_command_data *scd)
257 int port = (scd->port > 0)? scd->port : conf.ortp_default_port_arg;
258 ortp_add_target(port, &scd->addr);
262 static char *ortp_info(void)
264 struct ortp_target *ot;
265 char *ret, *tgts = NULL;
267 list_for_each_entry(ot, &targets, node) {
268 char *tmp = make_message("%s%s:%d ", tgts? tgts : "",
269 TARGET_ADDR(ot), ot->port);
275 "ortp default port: udp %d\n"
276 "ortp targets: %s\n",
277 (self->status == SENDER_ON)? "on" : "off",
278 conf.ortp_default_port_arg,
279 tgts? tgts : "(none)"
285 static void ortp_init_target_list(void)
289 INIT_LIST_HEAD(&targets);
290 for (i = 0; i < conf.ortp_target_given; i++) {
291 char *arg = para_strdup(conf.ortp_target_arg[i]);
292 char *p = strchr(arg, ':');
299 if (!inet_aton(arg, &addr))
302 if (port < 0 || port > 65535)
303 port = conf.ortp_default_port_arg;
304 ortp_add_target(port, &addr);
307 PARA_CRIT_LOG("syntax error for ortp_target option "
308 "#%d, ignoring\n", i);
315 static void ortp_pre_select(__a_unused int *max_fileno, __a_unused fd_set *rfds,
316 __a_unused fd_set *wfds)
321 static char *ortp_help(void)
325 "usage: {add|delete} IP port\n"
326 "example: add 224.0.1.38 1500 (LAN-streaming)\n"
331 * the init function of para_server's ortp sender
333 * \param s pointer to the http sender struct
335 * It initializes all function pointers of \a s and the list of ortp targets.
337 void ortp_send_init(struct sender *s)
340 INIT_LIST_HEAD(&targets);
344 s->pre_select = ortp_pre_select;
345 s->post_select = NULL;
346 s->shutdown_clients = ortp_shutdown_targets;
347 s->client_cmds[SENDER_ON] = ortp_com_on;
348 s->client_cmds[SENDER_OFF] = ortp_com_off;
349 s->client_cmds[SENDER_DENY] = NULL;
350 s->client_cmds[SENDER_ALLOW] = NULL;
351 s->client_cmds[SENDER_ADD] = ortp_com_add;
352 s->client_cmds[SENDER_DELETE] = ortp_com_delete;
354 s->status = SENDER_OFF;
355 ortp_init_target_list();
356 if (!conf.ortp_no_autostart_given)
357 s->status = SENDER_ON;
358 PARA_DEBUG_LOG("%s", "ortp sender init complete\n");