2 * Copyright (C) 2005-2007 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file ortp_send.c para_server's ortp sender */
10 #include <ortp/port.h>
12 #include "server.cmdline.h"
22 /** \cond convert in_addr to ascii */
23 #define TARGET_ADDR(oc) inet_ntoa((oc)->addr)
26 /** describes one entry in the list of targets for the ortp sender */
30 /** whether the ortp sender is activated */
32 /** the ortp timestamp increases by this amount */
34 /** the currently used timestamp for this target */
36 /** the position of this target in the list of targets */
37 struct list_head node;
40 /** non-zero if at least one chunk has been sent to this target */
42 /** the session pointer from libortp */
46 static struct list_head targets;
47 static struct sender *self;
49 static void ortp_delete_target(struct ortp_target *ot, const char *msg)
51 PARA_NOTICE_LOG("deleting %s:%d (%s) from list\n", TARGET_ADDR(ot),
54 rtp_session_destroy(ot->session);
61 static void ortp_send_buf(char *buf, size_t len, long unsigned chunks_sent)
63 struct ortp_target *ot, *tmp;
64 int ret, ortp_len = len; /* rtp_session_send_with_ts expects int */
68 list_for_each_entry_safe(ot, tmp, &targets, node) {
72 WRITE_CHUNK_TS(buf, ot->chunk_ts);
73 ts = ot->chunk_ts * chunks_sent;
74 ret = rtp_session_send_with_ts(ot->session,
75 (unsigned char*)buf, ortp_len, ts);
78 ortp_delete_target(ot, "send error");
80 PARA_NOTICE_LOG("short write %d\n", ret);
84 static int set_multicast(RtpSession *s)
86 unsigned char loop = 1;
89 ret = setsockopt(s->rtp.socket,
90 IPPROTO_IP, IP_MULTICAST_LOOP, &loop, sizeof(loop));
92 PARA_ERROR_LOG("IP_MULTICAST_LOOP error %d\n", ret);
98 static void ortp_init_session(struct ortp_target *ot)
103 PARA_NOTICE_LOG("sending to udp %s:%d\n", TARGET_ADDR(ot), ot->port);
104 ot->session = rtp_session_new(RTP_SESSION_SENDONLY);
108 if (conf.ortp_jitter_compensation_arg) {
109 rtp_session_enable_adaptive_jitter_compensation(ot->session, TRUE);
110 rtp_session_set_jitter_compensation(ot->session,
111 conf.ortp_jitter_compensation_arg);
113 /* always successful */
114 rtp_session_set_send_payload_type(s, PAYLOAD_AUDIO_CONTINUOUS);
115 ret = rtp_session_set_remote_addr(s, TARGET_ADDR(ot), ot->port);
117 rtp_session_destroy(ot->session);
125 static void ortp_shutdown_targets(void)
127 unsigned char buf[ORTP_AUDIO_HEADER_LEN];
128 struct ortp_target *ot, *tmp;
130 WRITE_PACKET_TYPE(buf, ORTP_EOF);
131 list_for_each_entry_safe(ot, tmp, &targets, node) {
132 if (!ot->session || !ot->streaming)
134 PARA_INFO_LOG("sending eof to ortp target %s:%d, ts = %d\n",
135 TARGET_ADDR(ot), ot->port, ot->last_ts);
136 rtp_session_send_with_ts(ot->session, buf,
137 ORTP_AUDIO_HEADER_LEN, ot->last_ts);
140 rtp_session_reset(ot->session);
144 static int need_extra_header(long unsigned current_chunk)
146 static struct timeval last_header;
147 struct timeval now, diff;
151 gettimeofday(&now, NULL);
152 tv_diff(&now, &last_header, &diff);
153 if (tv2ms(&diff) < conf.ortp_header_interval_arg)
159 static void ortp_send(long unsigned current_chunk, long unsigned chunks_sent,
160 const char *buf, size_t len)
162 struct ortp_target *ot, *tmp;
164 unsigned header_len = 0;
165 int packet_type = ORTP_DATA;
166 char *sendbuf, *header_buf = NULL;
167 struct timeval *chunk_tv;
169 if (self->status != SENDER_ON)
171 chunk_tv = vss_chunk_time();
174 list_for_each_entry_safe(ot, tmp, &targets, node) {
176 ortp_init_session(ot);
181 ot->chunk_ts = rtp_session_time_to_ts(ot->session,
182 (int)tv2ms(chunk_tv));
183 // PARA_DEBUG_LOG("len: %d, ts: %lu, ts: %d\n",
184 // len, ot->chunk_ts * chunks_sent, ot->chunk_ts);
187 if (list_empty(&targets))
189 header_buf = vss_get_header(&header_len);
190 if (!need_extra_header(current_chunk))
192 sendbuf_len = ORTP_AUDIO_HEADER_LEN + header_len + len;
193 sendbuf = para_malloc(sendbuf_len);
195 packet_type = ORTP_BOF;
197 packet_type = ORTP_HEADER;
198 WRITE_PACKET_TYPE(sendbuf, packet_type);
199 WRITE_CHUNK_TIME(sendbuf, chunk_tv->tv_usec);
200 WRITE_STREAM_TYPE(sendbuf, header_buf? 1 : 0);
201 WRITE_HEADER_LEN(sendbuf, header_len);
203 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN, header_buf,
205 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN + header_len, buf, len);
206 ortp_send_buf(sendbuf, sendbuf_len, chunks_sent);
210 static int ortp_com_on(__a_unused struct sender_command_data *scd)
213 self->status = SENDER_ON;
217 static int ortp_com_off(__a_unused struct sender_command_data *scd)
219 ortp_shutdown_targets();
220 self->status = SENDER_OFF;
224 static int ortp_com_delete(struct sender_command_data *scd)
226 char *a = para_strdup(inet_ntoa(scd->addr));
227 struct ortp_target *ot, *tmp;
228 list_for_each_entry_safe(ot, tmp, &targets, node) {
229 if (scd->port != ot->port)
231 if (strcmp(TARGET_ADDR(ot), a))
233 ortp_delete_target(ot, "com_delete");
238 static void ortp_add_target(int port, struct in_addr *addr)
240 struct ortp_target *ot = para_calloc(sizeof(struct ortp_target));
243 PARA_INFO_LOG("adding to target list (%s:%d)\n",
244 TARGET_ADDR(ot), ot->port);
245 para_list_add(&ot->node, &targets);
248 static int ortp_com_add(struct sender_command_data *scd)
250 int port = (scd->port > 0)? scd->port : conf.ortp_default_port_arg;
251 ortp_add_target(port, &scd->addr);
255 static char *ortp_info(void)
257 struct ortp_target *ot;
258 char *ret, *tgts = NULL;
260 list_for_each_entry(ot, &targets, node) {
261 char *tmp = make_message("%s%s:%d ", tgts? tgts : "",
262 TARGET_ADDR(ot), ot->port);
268 "ortp default port: udp %d\n"
269 "ortp targets: %s\n",
270 (self->status == SENDER_ON)? "on" : "off",
271 conf.ortp_default_port_arg,
272 tgts? tgts : "(none)"
278 static void ortp_init_target_list(void)
282 INIT_LIST_HEAD(&targets);
283 for (i = 0; i < conf.ortp_target_given; i++) {
284 char *arg = para_strdup(conf.ortp_target_arg[i]);
285 char *p = strchr(arg, ':');
292 if (!inet_aton(arg, &addr))
295 if (port < 0 || port > 65535)
296 port = conf.ortp_default_port_arg;
297 ortp_add_target(port, &addr);
300 PARA_CRIT_LOG("syntax error for ortp_target option "
301 "#%d, ignoring\n", i);
308 static void ortp_pre_select(__a_unused int *max_fileno, __a_unused fd_set *rfds,
309 __a_unused fd_set *wfds)
314 static char *ortp_help(void)
318 "usage: {add|delete} IP port\n"
319 "example: add 224.0.1.38 1500 (LAN-streaming)\n"
324 * the init function of para_server's ortp sender
326 * \param s pointer to the http sender struct
328 * It initializes all function pointers of \a s and the list of ortp targets.
330 void ortp_send_init(struct sender *s)
333 INIT_LIST_HEAD(&targets);
337 s->pre_select = ortp_pre_select;
338 s->post_select = NULL;
339 s->shutdown_clients = ortp_shutdown_targets;
340 s->client_cmds[SENDER_ON] = ortp_com_on;
341 s->client_cmds[SENDER_OFF] = ortp_com_off;
342 s->client_cmds[SENDER_DENY] = NULL;
343 s->client_cmds[SENDER_ALLOW] = NULL;
344 s->client_cmds[SENDER_ADD] = ortp_com_add;
345 s->client_cmds[SENDER_DELETE] = ortp_com_delete;
347 s->status = SENDER_OFF;
348 ortp_init_target_list();
349 if (!conf.ortp_no_autostart_given)
350 s->status = SENDER_ON;
351 PARA_DEBUG_LOG("%s", "ortp sender init complete\n");