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/*
* FILE: session.h
* PROGRAM: RAT
* AUTHORS: Vicky Hardman + Isidor Kouvelas + Colin Perkins + Orion Hodson
*
* Copyright (c) 1995-2001 University College London
* All rights reserved.
*
* $Id: session.h,v 1.115 2001/01/08 20:30:08 ucaccsp Exp $
*/
#ifndef _session_h_
#define _session_h_
#include "net_udp.h"
#include "ts.h"
#include "audio_types.h"
#include "converter_types.h"
#include "repair_types.h"
/* This will have to be raised in the future */
#define MAX_LAYERS 2
#define MAX_ENCODINGS 7
#define MAX_NATIVE 4
#define MAX_PACKET_SAMPLES 1280
#define PACKET_LENGTH MAX_PACKET_SAMPLES + 100
#define PORT_UNINIT 0
/* Rat mode def's */
#define AUDIO_TOOL 1
#define TRANSCODER 2
#define FLAKEAWAY 4
#define SILENCE_DETECTION_OFF 0
#define SILENCE_DETECTION_AUTO 1
#define SILENCE_DETECTION_MANUAL 2
/*- global clock frequency -*/
#define GLOBAL_CLOCK_FREQ 96000
#define PT_VANILLA -1
#define PT_INTERLEAVED 108
#define PT_REDUNDANCY 121 /* This has to be 121 for compatibility with RAT-3.0 */
#define SESSION_TITLE_LEN 40
extern int thread_pri;
typedef struct s_session {
struct s_session *other_session; /* Only valid when we're a transcoder... */
short id; /* unique session id */
int mode; /* audio tool, transcoder */
char *title;
char asc_address[MAX_LAYERS][MAXHOSTNAMELEN+1];
u_short rx_rtp_port[MAX_LAYERS];
u_short tx_rtp_port[MAX_LAYERS];
u_short rx_rtcp_port[MAX_LAYERS];
u_short tx_rtcp_port[MAX_LAYERS];
int ttl;
struct rtp *rtp_session[MAX_LAYERS];
int rtp_session_count;
uint8_t layers; /* number of layers == rtp_session_count */
int filter_loopback;
timestamp_t cur_ts; /* current device time */
struct s_cushion_struct *cushion;
struct s_audio_config *new_config;
struct s_mixer *ms;
u_char encodings[MAX_ENCODINGS];
int num_encodings; /* no of unique encs in used */
struct s_channel_state *channel_coder;
int playing_audio;
repair_id_t repair; /* Loss concealment algorithm */
converter_id_t converter; /* Sample-rate Converter */
int lecture; /* UI lecture mode */
int render_3d;
int echo_suppress;
int echo_tx_active; /* Mute state when suppressing */
int auto_lecture; /* Used for dummy lecture mode */
int receive_audit_required;
int silence_detection; /* Which silence detection scheme is active off / auto / manual */
struct s_sd* auto_sd;
struct s_manual_sd* manual_sd;
uint16_t manual_sd_thresh;
int meter; /* if powermeters are on */
uint32_t meter_period;
int ui_activated; /* If our ssrc is highlighted in the ui */
int sync_on;
int agc_on;
int ui_on; /* If we have a user interface... */
struct s_sndfile *in_file; /* File being transmitted over network */
struct s_converter *in_file_converter; /* Input file may be at wrong rate and needs converting */
struct s_sndfile *out_file; /* File being recorded from network */
struct s_voxlet *local_file_player; /* File that we are playing to ourselves (local playback) */
struct s_tonegen *tone_generator; /* Tone generator for local audio test */
audio_desc_t audio_device;
struct s_tx_buffer *tb;
struct s_pdb *pdb; /* persistent participant information database. */
struct s_source_list *active_sources;
ts_sequencer decode_sequencer;
int limit_playout;
uint32_t min_playout;
uint32_t max_playout;
uint32_t last_depart_ts;
struct mbus *mbus_engine;
char *mbus_engine_addr;
char *mbus_ui_addr;
char *mbus_video_addr;
int loopback_gain;
char *encrkey;
FILE *logger;
int mbus_waiting;
char *mbus_waiting_token;
int mbus_go;
char *mbus_go_token;
uint32_t magic; /* Magic number for debugging purposes */
} session_t;
void session_init(session_t *sp, int index, int mode);
void session_exit(session_t *sp);
void session_validate(session_t *sp);
#endif /* _session_h_ */
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