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 /** \cond convert in_addr to ascii */
25 #define TARGET_ADDR(oc) inet_ntoa((oc)->addr)
28 /** describes one entry in the list of targets for the ortp sender */
32 /** whether the ortp sender is activated */
34 /** the ortp timestamp increases by this amount */
36 /** the currently used timestamp for this target */
38 /** the position of this target in the list of targets */
39 struct list_head node;
42 /** non-zero if at least one chunk has been sent to this target */
44 /** the session pointer from libortp */
48 static struct list_head targets;
49 static struct sender *self;
51 static void ortp_delete_target(struct ortp_target *ot, const char *msg)
53 PARA_NOTICE_LOG("deleting %s:%d (%s) from list\n", TARGET_ADDR(ot),
56 rtp_session_destroy(ot->session);
63 static void ortp_send_buf(char *buf, size_t len, long unsigned chunks_sent)
65 struct ortp_target *ot, *tmp;
66 int ret, ortp_len = len; /* rtp_session_send_with_ts expects int */
70 list_for_each_entry_safe(ot, tmp, &targets, node) {
74 WRITE_CHUNK_TS(buf, ot->chunk_ts);
75 ts = ot->chunk_ts * chunks_sent;
76 ret = rtp_session_send_with_ts(ot->session,
77 (unsigned char*)buf, ortp_len, ts);
80 ortp_delete_target(ot, "send error");
82 PARA_NOTICE_LOG("short write %d\n", ret);
86 static int set_multicast(RtpSession *s)
88 unsigned char loop = 1;
91 ret = setsockopt(s->rtp.socket,
92 IPPROTO_IP, IP_MULTICAST_LOOP, &loop, sizeof(loop));
94 PARA_ERROR_LOG("IP_MULTICAST_LOOP error %d\n", ret);
100 static void ortp_init_session(struct ortp_target *ot)
105 PARA_NOTICE_LOG("sending to udp %s:%d\n", TARGET_ADDR(ot), ot->port);
106 ot->session = rtp_session_new(RTP_SESSION_SENDONLY);
110 if (conf.ortp_jitter_compensation_arg) {
111 rtp_session_enable_adaptive_jitter_compensation(ot->session, TRUE);
112 rtp_session_set_jitter_compensation(ot->session,
113 conf.ortp_jitter_compensation_arg);
115 /* always successful */
116 rtp_session_set_send_payload_type(s, PAYLOAD_AUDIO_CONTINUOUS);
117 ret = rtp_session_set_remote_addr(s, TARGET_ADDR(ot), ot->port);
119 rtp_session_destroy(ot->session);
127 static void ortp_shutdown_targets(void)
129 unsigned char buf[ORTP_AUDIO_HEADER_LEN];
130 struct ortp_target *ot, *tmp;
132 WRITE_PACKET_TYPE(buf, ORTP_EOF);
133 list_for_each_entry_safe(ot, tmp, &targets, node) {
134 if (!ot->session || !ot->streaming)
136 PARA_INFO_LOG("sending eof to ortp target %s:%d, ts = %d\n",
137 TARGET_ADDR(ot), ot->port, ot->last_ts);
138 rtp_session_send_with_ts(ot->session, buf,
139 ORTP_AUDIO_HEADER_LEN, ot->last_ts);
142 rtp_session_reset(ot->session);
146 static int need_extra_header(long unsigned current_chunk)
148 static struct timeval last_header;
149 struct timeval now, diff;
153 gettimeofday(&now, NULL);
154 tv_diff(&now, &last_header, &diff);
155 if (tv2ms(&diff) < conf.ortp_header_interval_arg)
161 static void ortp_send(long unsigned current_chunk, long unsigned chunks_sent,
162 const char *buf, size_t len)
164 struct ortp_target *ot, *tmp;
166 unsigned header_len = 0;
167 int packet_type = ORTP_DATA;
168 char *sendbuf, *header_buf = NULL;
169 struct timeval *chunk_tv;
171 if (self->status != SENDER_ON)
174 // PARA_NOTICE_LOG("sending %lu\n", current_chunk);
175 chunk_tv = vss_chunk_time();
178 list_for_each_entry_safe(ot, tmp, &targets, node) {
180 ortp_init_session(ot);
185 ot->chunk_ts = rtp_session_time_to_ts(ot->session,
186 (int)tv2ms(chunk_tv));
187 // PARA_DEBUG_LOG("len: %d, ts: %lu, ts: %d\n",
188 // len, ot->chunk_ts * chunks_sent, ot->chunk_ts);
191 if (list_empty(&targets))
193 header_buf = vss_get_header(&header_len);
194 if (!need_extra_header(current_chunk))
196 sendbuf_len = ORTP_AUDIO_HEADER_LEN + header_len + len;
197 sendbuf = para_malloc(sendbuf_len);
199 packet_type = ORTP_BOF;
201 packet_type = ORTP_HEADER;
202 WRITE_PACKET_TYPE(sendbuf, packet_type);
203 WRITE_CHUNK_TIME(sendbuf, chunk_tv->tv_usec);
204 WRITE_STREAM_TYPE(sendbuf, header_buf? 1 : 0);
205 WRITE_HEADER_LEN(sendbuf, header_len);
207 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN, header_buf,
209 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN + header_len, buf, len);
210 ortp_send_buf(sendbuf, sendbuf_len, chunks_sent);
214 static int ortp_com_on(__a_unused struct sender_command_data *scd)
217 self->status = SENDER_ON;
221 static int ortp_com_off(__a_unused struct sender_command_data *scd)
223 ortp_shutdown_targets();
224 self->status = SENDER_OFF;
228 static int ortp_com_delete(struct sender_command_data *scd)
230 char *a = para_strdup(inet_ntoa(scd->addr));
231 struct ortp_target *ot, *tmp;
232 list_for_each_entry_safe(ot, tmp, &targets, node) {
233 if (scd->port != ot->port)
235 if (strcmp(TARGET_ADDR(ot), a))
237 ortp_delete_target(ot, "com_delete");
242 static void ortp_add_target(int port, struct in_addr *addr)
244 struct ortp_target *ot = para_calloc(sizeof(struct ortp_target));
247 PARA_INFO_LOG("adding to target list (%s:%d)\n",
248 TARGET_ADDR(ot), ot->port);
249 para_list_add(&ot->node, &targets);
252 static int ortp_com_add(struct sender_command_data *scd)
254 int port = (scd->port > 0)? scd->port : conf.ortp_default_port_arg;
255 ortp_add_target(port, &scd->addr);
259 static char *ortp_info(void)
261 struct ortp_target *ot;
262 char *ret, *tgts = NULL;
264 list_for_each_entry(ot, &targets, node) {
265 char *tmp = make_message("%s%s:%d ", tgts? tgts : "",
266 TARGET_ADDR(ot), ot->port);
272 "ortp default port: udp %d\n"
273 "ortp targets: %s\n",
274 (self->status == SENDER_ON)? "on" : "off",
275 conf.ortp_default_port_arg,
276 tgts? tgts : "(none)"
282 static void ortp_init_target_list(void)
286 INIT_LIST_HEAD(&targets);
287 for (i = 0; i < conf.ortp_target_given; i++) {
288 char *arg = para_strdup(conf.ortp_target_arg[i]);
289 char *p = strchr(arg, ':');
296 if (!inet_pton(AF_INET, arg, &addr))
299 if (port < 0 || port > 65535)
300 port = conf.ortp_default_port_arg;
301 ortp_add_target(port, &addr);
304 PARA_CRIT_LOG("syntax error for ortp_target option "
305 "#%d, ignoring\n", i);
312 static void ortp_pre_select(__a_unused int *max_fileno, __a_unused fd_set *rfds,
313 __a_unused fd_set *wfds)
318 static char *ortp_help(void)
322 "usage: {add|delete} IP port\n"
323 "example: add 224.0.1.38 1500 (LAN-streaming)\n"
328 * the init function of para_server's ortp sender
330 * \param s pointer to the http sender struct
332 * It initializes all function pointers of \a s and the list of ortp targets.
334 void ortp_send_init(struct sender *s)
337 INIT_LIST_HEAD(&targets);
341 s->pre_select = ortp_pre_select;
342 s->post_select = NULL;
343 s->shutdown_clients = ortp_shutdown_targets;
344 s->client_cmds[SENDER_ON] = ortp_com_on;
345 s->client_cmds[SENDER_OFF] = ortp_com_off;
346 s->client_cmds[SENDER_DENY] = NULL;
347 s->client_cmds[SENDER_ALLOW] = NULL;
348 s->client_cmds[SENDER_ADD] = ortp_com_add;
349 s->client_cmds[SENDER_DELETE] = ortp_com_delete;
351 s->status = SENDER_OFF;
352 ortp_init_target_list();
353 if (!conf.ortp_no_autostart_given)
354 s->status = SENDER_ON;
355 PARA_DEBUG_LOG("%s", "ortp sender init complete\n");