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/*
* FILE: session.c
* PROGRAM: RAT
* AUTHORS: Vicky Hardman + Isidor Kouvelas + Colin Perkins + Orion Hodson
*
* Copyright (c) 1995-2001 University College London
* All rights reserved.
*/
#ifndef HIDE_SOURCE_STRINGS
static const char cvsid[] =
"$Id: session.c,v 1.159 2001/01/08 20:30:07 ucaccsp Exp $";
#endif /* HIDE_SOURCE_STRINGS */
#include "config_unix.h"
#include "config_win32.h"
#include "debug.h"
#include "memory.h"
#include "version.h"
#include "session.h"
#include "repair.h"
#include "codec_types.h"
#include "codec.h"
#include "channel_types.h"
#include "channel.h"
#include "converter.h"
#include "parameters.h"
#include "audio.h"
#include "pdb.h"
#include "rtp.h"
#include "source.h"
#include "channel_types.h"
#include "channel.h"
#include "sndfile.h"
#include "tonegen.h"
#include "voxlet.h"
#define PCKT_QUEUE_RTP_LEN 24
#define PCKT_QUEUE_RTCP_LEN 12
/* sanity_check_payloads checks for overlapping payload maps between
* channel coders and codecs. Necessary because I don't trust myself
* to not overlap payloads, and other people should not have to worry
* about it either. [oth]
*/
static int
sanity_check_payloads(void)
{
uint32_t i, j, n_codecs, n_channels;
codec_id_t cid;
const codec_format_t *cf = NULL;
const cc_details_t *ccd = NULL;
cc_id_t ccid;
u_char pt;
n_codecs = codec_get_number_of_codecs();
n_channels = channel_get_coder_count();
for(i = 0; i < n_codecs; i++) {
cid = codec_get_codec_number(i);
cf = codec_get_format(cid);
pt = codec_get_payload(cid);
if (pt != CODEC_PAYLOAD_DYNAMIC) {
ccid = channel_coder_get_by_payload(pt);
for(j = 0; j < n_channels; j++) {
ccd = channel_get_coder_details(j);
if (ccd == channel_get_null_coder()) {
continue;
}
if (ccd->descriptor == ccid) {
debug_msg("clash with %s %s payload (%d)\n", cf->long_name, ccd->name, pt);
return FALSE;
}
}
} else {
/* codec is not mapped into codec space so ignore */
}
}
return TRUE;
}
void
session_init(session_t *sp, int index, int mode)
{
codec_id_t cid;
const codec_format_t *cf = NULL;
const converter_details_t *conv = NULL;
const cc_details_t *ccd = NULL;
uint8_t i;
memset(sp, 0, sizeof(session_t));
codec_init();
sanity_check_payloads();
vu_table_init();
cid = codec_get_by_name("DVI-8K-Mono");
assert(cid);
cf = codec_get_format(cid);
sp->cur_ts = ts_map32(8000,0);
sp->encodings[0] = codec_get_payload(cid); /* user chosen encoding for primary */
sp->num_encodings = 1; /* Number of encodings applied */
ccd = channel_get_null_coder();
channel_encoder_create(ccd->descriptor, &sp->channel_coder);
conv = converter_get_details(0);
sp->converter = conv->id;
sp->other_session = NULL; /* Completed in main_engine.c if we're a transoder */
sp->id = index;
sp->mode = mode;
sp->rtp_session_count = 0;
for (i = 0; i < MAX_LAYERS; i++) {
sp->rx_rtp_port[i] = sp->tx_rtp_port[i] = sp->rx_rtcp_port[i] = sp->tx_rtcp_port[i] = PORT_UNINIT;
sp->rtp_session[i] = NULL;
}
sp->rx_rtp_port[0] = 5004; /* Default ports per: */
sp->tx_rtp_port[0] = 5004; /* draft-ietf-avt-profile-new-00 */
sp->rx_rtcp_port[0] = 5005;
sp->tx_rtcp_port[0] = 5005;
sp->ttl = 16;
sp->filter_loopback = TRUE;
sp->playing_audio = TRUE;
sp->lecture = FALSE;
sp->auto_lecture = 0;
sp->receive_audit_required = FALSE;
sp->silence_detection = SILENCE_DETECTION_OFF;
sp->sync_on = FALSE;
sp->agc_on = FALSE;
sp->ui_on = FALSE;
sp->meter = TRUE; /* Powermeter operation */
sp->in_file = NULL;
sp->out_file = NULL;
sp->local_file_player = NULL;
sp->mbus_engine_addr = NULL;
sp->mbus_engine = NULL;
sp->mbus_ui_addr = NULL;
sp->mbus_video_addr = xstrdup("(media:video module:engine)");
sp->min_playout = 0;
sp->max_playout = 1000;
sp->last_depart_ts = 0;
sp->loopback_gain = 0;
sp->layers = 1;
sp->ui_activated = FALSE;
sp->encrkey = NULL;
sp->logger = NULL;
sp->mbus_waiting = FALSE;
sp->mbus_waiting_token = NULL;
sp->mbus_go = FALSE;
sp->mbus_go_token = NULL;
sp->magic = 0xcafebabe; /* Magic number for debugging */
source_list_create(&sp->active_sources);
sp->title = "Untitled session";
strncpy(sp->asc_address[0], "127.0.0.3", MAXHOSTNAMELEN); /* Yeuch! This value should never be used! */
}
void
session_exit(session_t *sp)
{
codec_exit();
if (sp->local_file_player) {
voxlet_destroy(&sp->local_file_player);
}
if (sp->tone_generator) {
tonegen_destroy(&sp->tone_generator);
}
if (sp->in_file_converter) {
converter_destroy(&sp->in_file_converter);
}
if (sp->in_file != NULL) {
snd_read_close (&sp->in_file);
}
if (sp->out_file != NULL) {
snd_write_close(&sp->out_file);
}
if (sp->pdb != NULL) {
pdb_destroy(&sp->pdb);
}
channel_encoder_destroy(&sp->channel_coder);
source_list_destroy(&sp->active_sources);
xfree(sp->mbus_engine_addr);
xfree(sp->mbus_video_addr);
xfree(sp->mbus_ui_addr);
xfree(sp);
}
void
session_validate(session_t *sp)
{
/* Sanity check the session... the more checks we can add here the better, */
/* they're done once round the main loop and we can add calls to this at */
/* any point we think our data structures are being corrupted. For speed, */
/* we only check the magic number if we've not been built with debugging. */
assert(sp != NULL);
assert(sp->magic == 0xcafebabe);
#ifdef DEBUG
assert((sp->ttl >= 0) && (sp->ttl <= 255));
assert((sp->tx_rtp_port[0] % 2) == 0);
assert((sp->rx_rtp_port[0] % 2) == 0);
assert((sp->tx_rtcp_port[0] % 2) == 1);
assert((sp->rx_rtcp_port[0] % 2) == 1);
#endif
}
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