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"
20 /** \cond convert in_addr to ascii */
21 #define TARGET_ADDR(oc) inet_ntoa((oc)->addr)
24 /** describes one entry in the list of targets for the ortp sender */
28 /** whether the ortp sender is activated */
30 /** the ortp timestamp increases by this amount */
32 /** the currently used timestamp for this target */
34 /** the position of this target in the list of targets */
35 struct list_head node;
38 /** non-zero if at least one chunk has been sent to this target */
40 /** the session pointer from libortp */
44 static struct list_head targets;
45 static struct sender *self;
47 static void ortp_delete_target(struct ortp_target *ot, const char *msg)
49 PARA_NOTICE_LOG("deleting %s:%d (%s) from list\n", TARGET_ADDR(ot),
52 rtp_session_destroy(ot->session);
59 static void ortp_send_buf(char *buf, size_t len, long unsigned chunks_sent)
61 struct ortp_target *ot, *tmp;
62 int ret, ortp_len = len; /* rtp_session_send_with_ts expects int */
66 list_for_each_entry_safe(ot, tmp, &targets, node) {
70 WRITE_CHUNK_TS(buf, ot->chunk_ts);
71 ts = ot->chunk_ts * chunks_sent;
72 ret = rtp_session_send_with_ts(ot->session,
73 (unsigned char*)buf, ortp_len, ts);
76 ortp_delete_target(ot, "send error");
78 PARA_NOTICE_LOG("short write %d\n", ret);
82 static int set_multicast(RtpSession *s)
84 unsigned char loop = 1;
87 ret = setsockopt(s->rtp.socket,
88 IPPROTO_IP, IP_MULTICAST_LOOP, &loop, sizeof(loop));
90 PARA_ERROR_LOG("IP_MULTICAST_LOOP error %d\n", ret);
96 static void ortp_init_session(struct ortp_target *ot)
101 PARA_NOTICE_LOG("sending to udp %s:%d\n", TARGET_ADDR(ot), ot->port);
102 ot->session = rtp_session_new(RTP_SESSION_SENDONLY);
106 if (conf.ortp_jitter_compensation_arg) {
107 rtp_session_enable_adaptive_jitter_compensation(ot->session, TRUE);
108 rtp_session_set_jitter_compensation(ot->session,
109 conf.ortp_jitter_compensation_arg);
111 /* always successful */
112 rtp_session_set_send_payload_type(s, PAYLOAD_AUDIO_CONTINUOUS);
113 ret = rtp_session_set_remote_addr(s, TARGET_ADDR(ot), ot->port);
115 rtp_session_destroy(ot->session);
123 static void ortp_shutdown_targets(void)
125 unsigned char buf[ORTP_AUDIO_HEADER_LEN];
126 struct ortp_target *ot, *tmp;
128 WRITE_PACKET_TYPE(buf, ORTP_EOF);
129 list_for_each_entry_safe(ot, tmp, &targets, node) {
130 if (!ot->session || !ot->streaming)
132 PARA_INFO_LOG("sending eof to ortp target %s:%d, ts = %d\n",
133 TARGET_ADDR(ot), ot->port, ot->last_ts);
134 rtp_session_send_with_ts(ot->session, buf,
135 ORTP_AUDIO_HEADER_LEN, ot->last_ts);
138 rtp_session_reset(ot->session);
142 static int need_extra_header(long unsigned current_chunk)
144 static struct timeval last_header;
145 struct timeval now, diff;
149 gettimeofday(&now, NULL);
150 tv_diff(&now, &last_header, &diff);
151 if (tv2ms(&diff) < conf.ortp_header_interval_arg)
157 static void ortp_send(long unsigned current_chunk, long unsigned chunks_sent,
158 const char *buf, size_t len)
160 struct ortp_target *ot, *tmp;
162 unsigned header_len = 0;
163 int packet_type = ORTP_DATA;
164 char *sendbuf, *header_buf = NULL;
165 struct timeval *chunk_tv;
167 if (self->status != SENDER_ON)
169 chunk_tv = vss_chunk_time();
172 list_for_each_entry_safe(ot, tmp, &targets, node) {
174 ortp_init_session(ot);
179 ot->chunk_ts = rtp_session_time_to_ts(ot->session,
180 (int)tv2ms(chunk_tv));
181 // PARA_DEBUG_LOG("len: %d, ts: %lu, ts: %d\n",
182 // len, ot->chunk_ts * chunks_sent, ot->chunk_ts);
185 if (list_empty(&targets))
187 header_buf = vss_get_header(&header_len);
188 if (!need_extra_header(current_chunk))
190 sendbuf_len = ORTP_AUDIO_HEADER_LEN + header_len + len;
191 sendbuf = para_malloc(sendbuf_len);
193 packet_type = ORTP_BOF;
195 packet_type = ORTP_HEADER;
196 WRITE_PACKET_TYPE(sendbuf, packet_type);
197 WRITE_CHUNK_TIME(sendbuf, chunk_tv->tv_usec);
198 WRITE_STREAM_TYPE(sendbuf, header_buf? 1 : 0);
199 WRITE_HEADER_LEN(sendbuf, header_len);
201 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN, header_buf,
203 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN + header_len, buf, len);
204 ortp_send_buf(sendbuf, sendbuf_len, chunks_sent);
208 static int ortp_com_on(__a_unused struct sender_command_data *scd)
211 self->status = SENDER_ON;
215 static int ortp_com_off(__a_unused struct sender_command_data *scd)
217 ortp_shutdown_targets();
218 self->status = SENDER_OFF;
222 static int ortp_com_delete(struct sender_command_data *scd)
224 char *a = para_strdup(inet_ntoa(scd->addr));
225 struct ortp_target *ot, *tmp;
226 list_for_each_entry_safe(ot, tmp, &targets, node) {
227 if (scd->port != ot->port)
229 if (strcmp(TARGET_ADDR(ot), a))
231 ortp_delete_target(ot, "com_delete");
236 static void ortp_add_target(int port, struct in_addr *addr)
238 struct ortp_target *ot = para_calloc(sizeof(struct ortp_target));
241 PARA_INFO_LOG("adding to target list (%s:%d)\n",
242 TARGET_ADDR(ot), ot->port);
243 para_list_add(&ot->node, &targets);
246 static int ortp_com_add(struct sender_command_data *scd)
248 int port = (scd->port > 0)? scd->port : conf.ortp_default_port_arg;
249 ortp_add_target(port, &scd->addr);
253 static char *ortp_info(void)
255 struct ortp_target *ot;
256 char *ret, *tgts = NULL;
258 list_for_each_entry(ot, &targets, node) {
259 char *tmp = make_message("%s%s:%d ", tgts? tgts : "",
260 TARGET_ADDR(ot), ot->port);
266 "ortp default port: udp %d\n"
267 "ortp targets: %s\n",
268 (self->status == SENDER_ON)? "on" : "off",
269 conf.ortp_default_port_arg,
270 tgts? tgts : "(none)"
276 static void ortp_init_target_list(void)
280 INIT_LIST_HEAD(&targets);
281 for (i = 0; i < conf.ortp_target_given; i++) {
282 char *arg = para_strdup(conf.ortp_target_arg[i]);
283 char *p = strchr(arg, ':');
290 if (!inet_aton(arg, &addr))
293 if (port < 0 || port > 65535)
294 port = conf.ortp_default_port_arg;
295 ortp_add_target(port, &addr);
298 PARA_CRIT_LOG("syntax error for ortp_target option "
299 "#%d, ignoring\n", i);
306 static void ortp_pre_select(__a_unused int *max_fileno, __a_unused fd_set *rfds,
307 __a_unused fd_set *wfds)
312 static char *ortp_help(void)
316 "usage: {add|delete} IP port\n"
317 "example: add 224.0.1.38 1500 (LAN-streaming)\n"
322 * the init function of para_server's ortp sender
324 * \param s pointer to the http sender struct
326 * It initializes all function pointers of \a s and the list of ortp targets.
328 void ortp_send_init(struct sender *s)
331 INIT_LIST_HEAD(&targets);
335 s->pre_select = ortp_pre_select;
336 s->post_select = NULL;
337 s->shutdown_clients = ortp_shutdown_targets;
338 s->client_cmds[SENDER_ON] = ortp_com_on;
339 s->client_cmds[SENDER_OFF] = ortp_com_off;
340 s->client_cmds[SENDER_DENY] = NULL;
341 s->client_cmds[SENDER_ALLOW] = NULL;
342 s->client_cmds[SENDER_ADD] = ortp_com_add;
343 s->client_cmds[SENDER_DELETE] = ortp_com_delete;
345 s->status = SENDER_OFF;
346 ortp_init_target_list();
347 if (!conf.ortp_no_autostart_given)
348 s->status = SENDER_ON;
349 PARA_DEBUG_LOG("%s", "ortp sender init complete\n");