2 * Copyright (C) 2005-2006 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 extern struct gengetopt_args_info conf;
37 /** describes one entry in the list of targets for the ortp sender */
41 /** whether the ortp sender is activated */
43 /** the ortp timestamp increases by this amount */
45 /** the currently used timestamp for this target */
47 /** the position of this target in the list of targets */
48 struct list_head node;
51 /** non-zero if at least one chunk has been sent to this target */
53 /** the session pointer from libortp */
57 static struct list_head targets;
58 static struct sender *self;
60 static void ortp_delete_target(struct ortp_target *ot, const char *msg)
62 PARA_NOTICE_LOG("deleting %s:%d (%s) from list\n", TARGET_ADDR(ot),
65 rtp_session_destroy(ot->session);
72 static void ortp_send_buf(char *buf, int len, long unsigned chunks_sent)
74 struct ortp_target *ot, *tmp;
77 list_for_each_entry_safe(ot, tmp, &targets, node) {
80 gettimeofday(&now, NULL);
83 WRITE_CHUNK_TS(buf, ot->chunk_ts);
84 ts = ot->chunk_ts * chunks_sent;
85 ret = rtp_session_send_with_ts(ot->session, buf, len, ts);
88 ortp_delete_target(ot, "send error");
90 PARA_NOTICE_LOG("short write %d\n", ret);
94 static void ortp_init_session(struct ortp_target *ot)
99 PARA_NOTICE_LOG("sending to udp %s:%d\n", TARGET_ADDR(ot), ot->port);
100 ot->session = rtp_session_new(RTP_SESSION_SENDONLY);
104 if (conf.ortp_jitter_compensation_arg) {
105 rtp_session_enable_adaptive_jitter_compensation(ot->session, TRUE);
106 rtp_session_set_jitter_compensation(ot->session,
107 conf.ortp_jitter_compensation_arg);
109 /* always successful */
110 rtp_session_set_send_payload_type(s, PAYLOAD_AUDIO_CONTINUOUS);
111 ret = rtp_session_set_remote_addr(s, TARGET_ADDR(ot), ot->port);
113 rtp_session_destroy(ot->session);
119 static void ortp_shutdown_targets(void)
122 struct ortp_target *ot, *tmp;
125 list_for_each_entry_safe(ot, tmp, &targets, node) {
126 if (!ot->session || !ot->streaming)
128 PARA_INFO_LOG("sending eof to ortp target %s:%d, ts = %d\n", TARGET_ADDR(ot), ot->port,
130 rtp_session_send_with_ts(ot->session, buf, 1, ot->last_ts);
133 rtp_session_reset(ot->session);
137 static int need_extra_header(struct audio_format *af, long unsigned chunks_sent)
139 /* FIXME: No need to compute this on every run */
140 int mod = conf.ortp_header_interval_arg / (tv2ms(&af->chunk_tv) + 1);
141 if (mod && (chunks_sent % mod))
146 static void ortp_send(struct audio_format *af, long unsigned current_chunk,
147 long unsigned chunks_sent, const char *buf, size_t len)
149 struct ortp_target *ot, *tmp;
152 int packet_type = ORTP_DATA, stream_type = af && af->get_header_info; /* header stream? */
153 char *sendbuf, *header_buf = NULL;
155 if (self->status != SENDER_ON)
157 list_for_each_entry_safe(ot, tmp, &targets, node) {
159 ortp_init_session(ot);
164 ot->chunk_ts = rtp_session_time_to_ts(ot->session,
165 tv2ms(&af->chunk_tv));
166 // PARA_DEBUG_LOG("len: %d, ts: %lu, ts: %d\n",
167 // len, ot->chunk_ts * chunks_sent, ot->chunk_ts);
170 if (list_empty(&targets))
173 header_buf = af->get_header_info(&header_len);
174 if (!need_extra_header(af, chunks_sent))
177 sendbuf_len = ORTP_AUDIO_HEADER_LEN + header_len + len;
178 sendbuf = para_malloc(sendbuf_len);
180 packet_type = ORTP_BOF;
182 packet_type = ORTP_HEADER;
183 WRITE_PACKET_TYPE(sendbuf, packet_type);
184 WRITE_CHUNK_TIME(sendbuf, af->chunk_tv.tv_usec);
185 WRITE_STREAM_TYPE(sendbuf, stream_type);
186 WRITE_HEADER_LEN(sendbuf, header_len);
188 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN, header_buf,
190 memcpy(sendbuf + ORTP_AUDIO_HEADER_LEN + header_len, buf, len);
191 ortp_send_buf(sendbuf, sendbuf_len, chunks_sent);
195 static int ortp_com_on(struct sender_command_data *scd)
198 self->status = SENDER_ON;
202 static int ortp_com_off(struct sender_command_data *scd)
204 ortp_shutdown_targets();
205 self->status = SENDER_OFF;
209 static int ortp_com_delete(struct sender_command_data *scd)
211 char *a = para_strdup(inet_ntoa(scd->addr));
212 struct ortp_target *ot, *tmp;
213 list_for_each_entry_safe(ot, tmp, &targets, node) {
214 if (scd->port != ot->port)
216 if (strcmp(TARGET_ADDR(ot), a))
218 ortp_delete_target(ot, "com_delete");
223 static void ortp_add_target(int port, struct in_addr *addr)
225 struct ortp_target *ot = para_calloc(sizeof(struct ortp_target));
228 PARA_INFO_LOG("adding to target list (%s:%d)\n",
229 TARGET_ADDR(ot), ot->port);
230 list_add(&ot->node, &targets);
233 static int ortp_com_add(struct sender_command_data *scd)
235 int port = (scd->port > 0)? scd->port : conf.ortp_default_port_arg;
236 ortp_add_target(port, &scd->addr);
240 static char *ortp_info(void)
242 struct ortp_target *ot;
243 char *ret, *tgts = NULL;
245 list_for_each_entry(ot, &targets, node) {
246 char *tmp = make_message("%s%s:%d ", tgts? tgts : "",
247 TARGET_ADDR(ot), ot->port);
253 "ortp default port: udp %d\n"
254 "ortp targets: %s\n",
255 (self->status == SENDER_ON)? "on" : "off",
256 conf.ortp_default_port_arg,
257 tgts? tgts : "(none)"
263 static void ortp_init_target_list(void)
267 INIT_LIST_HEAD(&targets);
268 for (i = 0; i < conf.ortp_target_given; i++) {
269 char *arg = para_strdup(conf.ortp_target_arg[i]);
270 char *p = strchr(arg, ':');
277 if (!inet_aton(arg, &addr))
280 if (port < 0 || port > 65535)
281 port = conf.ortp_default_port_arg;
282 ortp_add_target(port, &addr);
285 PARA_CRIT_LOG("syntax error for ortp_target option "
286 "#%d, ignoring\n", i);
293 static void ortp_pre_select(struct audio_format *af, int *max_fileno,
294 fd_set *rfds, fd_set *wfds)
299 static char *ortp_help(void)
303 "usage: {add|delete} IP port\n"
304 "example: add 224.0.1.38 1500 (LAN-streaming)\n"
309 * the init function of para_server's ortp sender
311 * \param s pointer to the http sender struct
313 * It initializes all function pointers of \a s and the list of ortp targets.
315 void ortp_send_init(struct sender *s)
318 INIT_LIST_HEAD(&targets);
322 s->pre_select = ortp_pre_select;
323 s->post_select = NULL;
324 s->shutdown_clients = ortp_shutdown_targets;
325 s->client_cmds[SENDER_ON] = ortp_com_on;
326 s->client_cmds[SENDER_OFF] = ortp_com_off;
327 s->client_cmds[SENDER_DENY] = NULL;
328 s->client_cmds[SENDER_ALLOW] = NULL;
329 s->client_cmds[SENDER_ADD] = ortp_com_add;
330 s->client_cmds[SENDER_DELETE] = ortp_com_delete;
332 s->status = SENDER_OFF;
333 ortp_init_target_list();
334 if (!conf.ortp_no_autostart_given)
335 s->status = SENDER_ON;
336 PARA_DEBUG_LOG("%s", "ortp sender init complete\n");