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"
24 /** Convert in_addr to ascii. */
25 #define TARGET_ADDR(oc) inet_ntoa((oc)->addr)
27 /** Describes one entry in the list of targets for the ortp sender. */
31 /** Whether the ortp sender is activated. */
33 /** The ortp timestamp increases by this amount. */
35 /** The currently used timestamp for this target. */
37 /** The position of this target in the list of targets. */
38 struct list_head node;
41 /** Non-zero if at least one chunk has been sent to this target. */
43 /** The session pointer from libortp. */
47 static struct list_head targets;
48 static struct sender *self;
50 static void ortp_delete_target(struct ortp_target *ot, const char *msg)
52 PARA_NOTICE_LOG("deleting %s:%d (%s) from list\n", TARGET_ADDR(ot),
55 rtp_session_destroy(ot->session);
62 static void ortp_send_buf(char *buf, size_t len, long unsigned chunks_sent)
64 struct ortp_target *ot, *tmp;
65 int ret, ortp_len = len; /* rtp_session_send_with_ts expects int */
69 list_for_each_entry_safe(ot, tmp, &targets, node) {
73 WRITE_CHUNK_TS(buf, ot->chunk_ts);
74 ts = ot->chunk_ts * chunks_sent;
75 ret = rtp_session_send_with_ts(ot->session,
76 (unsigned char*)buf, ortp_len, ts);
79 ortp_delete_target(ot, "send error");
81 PARA_NOTICE_LOG("short write %d\n", ret);
85 static int set_multicast(RtpSession *s)
87 unsigned char loop = 1;
90 ret = setsockopt(s->rtp.socket,
91 IPPROTO_IP, IP_MULTICAST_LOOP, &loop, sizeof(loop));
93 PARA_ERROR_LOG("IP_MULTICAST_LOOP error %d\n", ret);
99 static void ortp_init_session(struct ortp_target *ot)
104 PARA_NOTICE_LOG("sending to udp %s:%d\n", TARGET_ADDR(ot), ot->port);
105 ot->session = rtp_session_new(RTP_SESSION_SENDONLY);
109 if (conf.ortp_jitter_compensation_arg) {
110 rtp_session_enable_adaptive_jitter_compensation(ot->session, TRUE);
111 rtp_session_set_jitter_compensation(ot->session,
112 conf.ortp_jitter_compensation_arg);
114 /* always successful */
115 rtp_session_set_send_payload_type(s, PAYLOAD_AUDIO_CONTINUOUS);
116 ret = rtp_session_set_remote_addr(s, TARGET_ADDR(ot), ot->port);
118 rtp_session_destroy(ot->session);
126 static void ortp_shutdown_targets(void)
128 unsigned char buf[ORTP_AUDIO_HEADER_LEN];
129 struct ortp_target *ot, *tmp;
131 WRITE_PACKET_TYPE(buf, ORTP_EOF);
132 list_for_each_entry_safe(ot, tmp, &targets, node) {
133 if (!ot->session || !ot->streaming)
135 PARA_INFO_LOG("sending eof to ortp target %s:%d, ts = %d\n",
136 TARGET_ADDR(ot), ot->port, ot->last_ts);
137 rtp_session_send_with_ts(ot->session, buf,
138 ORTP_AUDIO_HEADER_LEN, ot->last_ts);
141 rtp_session_reset(ot->session);
145 static int need_extra_header(long unsigned current_chunk)
147 static struct timeval last_header;
148 struct timeval now, diff;
152 gettimeofday(&now, NULL);
153 tv_diff(&now, &last_header, &diff);
154 if (tv2ms(&diff) < conf.ortp_header_interval_arg)
160 static void ortp_send(long unsigned current_chunk, long unsigned chunks_sent,
161 const char *buf, size_t len)
163 struct ortp_target *ot, *tmp;
165 unsigned header_len = 0;
166 int packet_type = ORTP_DATA;
167 char *sendbuf, *header_buf = NULL;
168 struct timeval *chunk_tv;
170 if (self->status != SENDER_ON)
173 // PARA_NOTICE_LOG("sending %lu\n", current_chunk);
174 chunk_tv = vss_chunk_time();
177 list_for_each_entry_safe(ot, tmp, &targets, node) {
179 ortp_init_session(ot);
184 ot->chunk_ts = rtp_session_time_to_ts(ot->session,
185 (int)tv2ms(chunk_tv));
186 // PARA_DEBUG_LOG("len: %d, ts: %lu, ts: %d\n",
187 // len, ot->chunk_ts * chunks_sent, ot->chunk_ts);
190 if (list_empty(&targets))
192 header_buf = vss_get_header(&header_len);
193 if (!need_extra_header(current_chunk))
195 sendbuf_len = ORTP_AUDIO_HEADER_LEN + header_len + len;
196 sendbuf = para_malloc(sendbuf_len);
198 packet_type = ORTP_BOF;
200 packet_type = ORTP_HEADER;
201 WRITE_PACKET_TYPE(sendbuf, packet_type);
202 WRITE_CHUNK_TIME(sendbuf, chunk_tv->tv_usec);
203 WRITE_STREAM_TYPE(sendbuf, header_buf? 1 : 0);
204 WRITE_HEADER_LEN(sendbuf, header_len);
206 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN, header_buf,
208 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN + header_len, buf, len);
209 ortp_send_buf(sendbuf, sendbuf_len, chunks_sent);
213 static int ortp_com_on(__a_unused struct sender_command_data *scd)
216 self->status = SENDER_ON;
220 static int ortp_com_off(__a_unused struct sender_command_data *scd)
222 ortp_shutdown_targets();
223 self->status = SENDER_OFF;
227 static int ortp_com_delete(struct sender_command_data *scd)
229 char *a = para_strdup(inet_ntoa(scd->addr));
230 struct ortp_target *ot, *tmp;
231 list_for_each_entry_safe(ot, tmp, &targets, node) {
232 if (scd->port != ot->port)
234 if (strcmp(TARGET_ADDR(ot), a))
236 ortp_delete_target(ot, "com_delete");
241 static void ortp_add_target(int port, struct in_addr *addr)
243 struct ortp_target *ot = para_calloc(sizeof(struct ortp_target));
246 PARA_INFO_LOG("adding to target list (%s:%d)\n",
247 TARGET_ADDR(ot), ot->port);
248 para_list_add(&ot->node, &targets);
251 static int ortp_com_add(struct sender_command_data *scd)
253 int port = (scd->port > 0)? scd->port : conf.ortp_default_port_arg;
254 ortp_add_target(port, &scd->addr);
258 static char *ortp_info(void)
260 struct ortp_target *ot;
261 char *ret, *tgts = NULL;
263 list_for_each_entry(ot, &targets, node) {
264 char *tmp = make_message("%s%s:%d ", tgts? tgts : "",
265 TARGET_ADDR(ot), ot->port);
271 "ortp default port: udp %d\n"
272 "ortp targets: %s\n",
273 (self->status == SENDER_ON)? "on" : "off",
274 conf.ortp_default_port_arg,
275 tgts? tgts : "(none)"
281 static void ortp_init_target_list(void)
285 INIT_LIST_HEAD(&targets);
286 for (i = 0; i < conf.ortp_target_given; i++) {
287 char *arg = para_strdup(conf.ortp_target_arg[i]);
288 char *p = strchr(arg, ':');
295 if (!inet_pton(AF_INET, arg, &addr))
298 if (port < 0 || port > 65535)
299 port = conf.ortp_default_port_arg;
300 ortp_add_target(port, &addr);
303 PARA_CRIT_LOG("syntax error for ortp_target option "
304 "#%d, ignoring\n", i);
311 static void ortp_pre_select(__a_unused int *max_fileno, __a_unused fd_set *rfds,
312 __a_unused fd_set *wfds)
317 static char *ortp_help(void)
321 "usage: {add|delete} IP port\n"
322 "example: add 224.0.1.38 1500 (LAN-streaming)\n"
327 * the init function of para_server's ortp sender
329 * \param s pointer to the http sender struct
331 * It initializes all function pointers of \a s and the list of ortp targets.
333 void ortp_send_init(struct sender *s)
336 INIT_LIST_HEAD(&targets);
340 s->pre_select = ortp_pre_select;
341 s->post_select = NULL;
342 s->shutdown_clients = ortp_shutdown_targets;
343 s->client_cmds[SENDER_ON] = ortp_com_on;
344 s->client_cmds[SENDER_OFF] = ortp_com_off;
345 s->client_cmds[SENDER_DENY] = NULL;
346 s->client_cmds[SENDER_ALLOW] = NULL;
347 s->client_cmds[SENDER_ADD] = ortp_com_add;
348 s->client_cmds[SENDER_DELETE] = ortp_com_delete;
350 s->status = SENDER_OFF;
351 ortp_init_target_list();
352 if (!conf.ortp_no_autostart_given)
353 s->status = SENDER_ON;
354 PARA_DEBUG_LOG("%s", "ortp sender init complete\n");