1
/* $Id: session.c 3841 2011-10-24 09:28:13Z ming $ */
3
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
4
* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
6
* This program is free software; you can redistribute it and/or modify
7
* it under the terms of the GNU General Public License as published by
8
* the Free Software Foundation; either version 2 of the License, or
9
* (at your option) any later version.
11
* This program is distributed in the hope that it will be useful,
12
* but WITHOUT ANY WARRANTY; without even the implied warranty of
13
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14
* GNU General Public License for more details.
16
* You should have received a copy of the GNU General Public License
17
* along with this program; if not, write to the Free Software
18
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20
#include <pjmedia/session.h>
21
#include <pjmedia/errno.h>
25
#include <pj/string.h>
26
#include <pj/assert.h>
31
struct pjmedia_session
36
pjmedia_stream_info stream_info[PJMEDIA_MAX_SDP_MEDIA];
37
pjmedia_stream *stream[PJMEDIA_MAX_SDP_MEDIA];
41
#define THIS_FILE "session.c"
43
#ifndef PJMEDIA_SESSION_SIZE
44
# define PJMEDIA_SESSION_SIZE (10*1024)
47
#ifndef PJMEDIA_SESSION_INC
48
# define PJMEDIA_SESSION_INC 1024
52
static const pj_str_t ID_AUDIO = { "audio", 5};
53
static const pj_str_t ID_VIDEO = { "video", 5};
54
static const pj_str_t ID_APPLICATION = { "application", 11};
55
static const pj_str_t ID_IN = { "IN", 2 };
56
static const pj_str_t ID_IP4 = { "IP4", 3};
57
static const pj_str_t ID_IP6 = { "IP6", 3};
58
static const pj_str_t ID_RTP_AVP = { "RTP/AVP", 7 };
59
static const pj_str_t ID_RTP_SAVP = { "RTP/SAVP", 8 };
60
//static const pj_str_t ID_SDP_NAME = { "pjmedia", 7 };
61
static const pj_str_t ID_RTPMAP = { "rtpmap", 6 };
62
static const pj_str_t ID_TELEPHONE_EVENT = { "telephone-event", 15 };
64
static const pj_str_t STR_INACTIVE = { "inactive", 8 };
65
static const pj_str_t STR_SENDRECV = { "sendrecv", 8 };
66
static const pj_str_t STR_SENDONLY = { "sendonly", 8 };
67
static const pj_str_t STR_RECVONLY = { "recvonly", 8 };
70
* Initialize session info from SDP session descriptors.
72
PJ_DEF(pj_status_t) pjmedia_session_info_from_sdp( pj_pool_t *pool,
75
pjmedia_session_info *si,
76
const pjmedia_sdp_session *local,
77
const pjmedia_sdp_session *remote)
81
PJ_ASSERT_RETURN(pool && endpt && si && local && remote, PJ_EINVAL);
83
si->stream_cnt = max_streams;
84
if (si->stream_cnt > local->media_count)
85
si->stream_cnt = local->media_count;
87
for (i=0; i<si->stream_cnt; ++i) {
90
status = pjmedia_stream_info_from_sdp( &si->stream_info[i], pool,
93
if (status != PJ_SUCCESS)
102
* Create new session.
104
PJ_DEF(pj_status_t) pjmedia_session_create( pjmedia_endpt *endpt,
105
const pjmedia_session_info *si,
106
pjmedia_transport *transports[],
108
pjmedia_session **p_session )
111
pjmedia_session *session;
112
int i; /* Must be signed */
115
/* Verify arguments. */
116
PJ_ASSERT_RETURN(endpt && si && p_session, PJ_EINVAL);
118
/* Create pool for the session. */
119
pool = pjmedia_endpt_create_pool( endpt, "session",
120
PJMEDIA_SESSION_SIZE,
121
PJMEDIA_SESSION_INC);
122
PJ_ASSERT_RETURN(pool != NULL, PJ_ENOMEM);
124
session = PJ_POOL_ZALLOC_T(pool, pjmedia_session);
125
session->pool = pool;
126
session->endpt = endpt;
127
session->stream_cnt = si->stream_cnt;
128
session->user_data = user_data;
130
/* Copy stream info (this simple memcpy may break sometime) */
131
pj_memcpy(session->stream_info, si->stream_info,
132
si->stream_cnt * sizeof(pjmedia_stream_info));
135
* Now create and start the stream!
137
for (i=0; i<(int)si->stream_cnt; ++i) {
139
/* Create the stream */
140
status = pjmedia_stream_create(endpt, session->pool,
141
&session->stream_info[i],
142
(transports?transports[i]:NULL),
144
&session->stream[i]);
145
if (status == PJ_SUCCESS)
146
status = pjmedia_stream_start(session->stream[i]);
148
if (status != PJ_SUCCESS) {
150
for ( --i; i>=0; ++i) {
151
pjmedia_stream_destroy(session->stream[i]);
154
pj_pool_release(session->pool);
162
*p_session = session;
170
PJ_DEF(pj_status_t) pjmedia_session_get_info( pjmedia_session *session,
171
pjmedia_session_info *info )
173
PJ_ASSERT_RETURN(session && info, PJ_EINVAL);
175
info->stream_cnt = session->stream_cnt;
176
pj_memcpy(info->stream_info, session->stream_info,
177
session->stream_cnt * sizeof(pjmedia_stream_info));
185
PJ_DEF(void*) pjmedia_session_get_user_data( pjmedia_session *session)
187
return (session? session->user_data : NULL);
191
* Destroy media session.
193
PJ_DEF(pj_status_t) pjmedia_session_destroy (pjmedia_session *session)
197
PJ_ASSERT_RETURN(session, PJ_EINVAL);
199
for (i=0; i<session->stream_cnt; ++i) {
201
pjmedia_stream_destroy(session->stream[i]);
205
pj_pool_release (session->pool);
212
* Activate all stream in media session.
215
PJ_DEF(pj_status_t) pjmedia_session_resume(pjmedia_session *session,
220
PJ_ASSERT_RETURN(session, PJ_EINVAL);
222
for (i=0; i<session->stream_cnt; ++i) {
223
pjmedia_session_resume_stream(session, i, dir);
231
* Suspend receipt and transmission of all stream in media session.
234
PJ_DEF(pj_status_t) pjmedia_session_pause(pjmedia_session *session,
239
PJ_ASSERT_RETURN(session, PJ_EINVAL);
241
for (i=0; i<session->stream_cnt; ++i) {
242
pjmedia_session_pause_stream(session, i, dir);
250
* Suspend receipt and transmission of individual stream in media session.
252
PJ_DEF(pj_status_t) pjmedia_session_pause_stream( pjmedia_session *session,
256
PJ_ASSERT_RETURN(session && index < session->stream_cnt, PJ_EINVAL);
258
return pjmedia_stream_pause(session->stream[index], dir);
263
* Activate individual stream in media session.
266
PJ_DEF(pj_status_t) pjmedia_session_resume_stream( pjmedia_session *session,
270
PJ_ASSERT_RETURN(session && index < session->stream_cnt, PJ_EINVAL);
272
return pjmedia_stream_resume(session->stream[index], dir);
276
* Send RTCP SDES for the session.
279
pjmedia_session_send_rtcp_sdes( const pjmedia_session *session )
283
PJ_ASSERT_RETURN(session, PJ_EINVAL);
285
for (i=0; i<session->stream_cnt; ++i) {
286
pjmedia_stream_send_rtcp_sdes(session->stream[i]);
293
* Send RTCP BYE for the session.
296
pjmedia_session_send_rtcp_bye( const pjmedia_session *session )
300
PJ_ASSERT_RETURN(session, PJ_EINVAL);
302
for (i=0; i<session->stream_cnt; ++i) {
303
pjmedia_stream_send_rtcp_bye(session->stream[i]);
310
* Enumerate media stream in the session.
312
PJ_DEF(pj_status_t) pjmedia_session_enum_streams(const pjmedia_session *session,
314
pjmedia_stream_info info[])
318
PJ_ASSERT_RETURN(session && count && *count && info, PJ_EINVAL);
320
if (*count > session->stream_cnt)
321
*count = session->stream_cnt;
323
for (i=0; i<*count; ++i) {
324
pj_memcpy(&info[i], &session->stream_info[i],
325
sizeof(pjmedia_stream_info));
333
* Get the port interface.
335
PJ_DEF(pj_status_t) pjmedia_session_get_port( pjmedia_session *session,
337
pjmedia_port **p_port)
339
return pjmedia_stream_get_port( session->stream[index], p_port);
345
PJ_DEF(pj_status_t) pjmedia_session_get_stream_stat( pjmedia_session *session,
347
pjmedia_rtcp_stat *stat)
349
PJ_ASSERT_RETURN(session && stat && index < session->stream_cnt,
352
return pjmedia_stream_get_stat(session->stream[index], stat);
357
* Reset session statistics.
359
PJ_DEF(pj_status_t) pjmedia_session_reset_stream_stat( pjmedia_session *session,
362
PJ_ASSERT_RETURN(session && index < session->stream_cnt, PJ_EINVAL);
364
return pjmedia_stream_reset_stat(session->stream[index]);
368
#if defined(PJMEDIA_HAS_RTCP_XR) && (PJMEDIA_HAS_RTCP_XR != 0)
370
* Get extended statistics
372
PJ_DEF(pj_status_t) pjmedia_session_get_stream_stat_xr(
373
pjmedia_session *session,
375
pjmedia_rtcp_xr_stat *stat_xr)
377
PJ_ASSERT_RETURN(session && stat_xr && index < session->stream_cnt,
380
return pjmedia_stream_get_stat_xr(session->stream[index], stat_xr);
384
PJ_DEF(pj_status_t) pjmedia_session_get_stream_stat_jbuf(
385
pjmedia_session *session,
387
pjmedia_jb_state *state)
389
PJ_ASSERT_RETURN(session && state && index < session->stream_cnt,
392
return pjmedia_stream_get_stat_jbuf(session->stream[index], state);
396
* Dial DTMF digit to the stream, using RFC 2833 mechanism.
398
PJ_DEF(pj_status_t) pjmedia_session_dial_dtmf( pjmedia_session *session,
400
const pj_str_t *ascii_digits )
402
PJ_ASSERT_RETURN(session && ascii_digits, PJ_EINVAL);
403
return pjmedia_stream_dial_dtmf(session->stream[index], ascii_digits);
407
* Check if the specified stream has received DTMF digits.
409
PJ_DEF(pj_status_t) pjmedia_session_check_dtmf( pjmedia_session *session,
412
PJ_ASSERT_RETURN(session, PJ_EINVAL);
413
return pjmedia_stream_check_dtmf(session->stream[index]);
418
* Retrieve DTMF digits from the specified stream.
420
PJ_DEF(pj_status_t) pjmedia_session_get_dtmf( pjmedia_session *session,
425
PJ_ASSERT_RETURN(session && ascii_digits && size, PJ_EINVAL);
426
return pjmedia_stream_get_dtmf(session->stream[index], ascii_digits,
431
* Install DTMF callback.
433
PJ_DEF(pj_status_t) pjmedia_session_set_dtmf_callback(pjmedia_session *session,
435
void (*cb)(pjmedia_stream*,
440
PJ_ASSERT_RETURN(session && index < session->stream_cnt, PJ_EINVAL);
441
return pjmedia_stream_set_dtmf_callback(session->stream[index], cb,