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iaxvoiplink.cpp
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iaxvoiplink.cpp 25.35 KiB
/*
* Copyright (C) 2006-2007 Savoir-Faire Linux inc.
* Author: Alexandre Bourget <alexandre.bourget@savoirfairelinux.com>
* Author: Yan Morin <yan.morin@savoirfairelinux.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "iaxvoiplink.h"
#include "global.h" // for _debug
#include "iaxcall.h"
#include "eventthread.h"
#include "manager.h"
#include "audio/audiolayer.h"
#include <samplerate.h>
#include <iax/iax-client.h>
#include <math.h>
#include <dlfcn.h>
#define IAX_BLOCKING 1
#define IAX_NONBLOCKING 0
#define IAX_SUCCESS 0
#define IAX_FAILURE -1
#define RANDOM_IAX_PORT rand() % 64000 + 1024
// from IAXC : iaxclient.h
#define IAX__20S_8KHZ_MAX 320 //320 samples, IAX packets can have more than 20ms.
#define IAX__20S_48KHZ_MAX 1920 // 320*6 samples = 1920, 6 = 48000/8000
#define CHK_VALID_CALL if (call == NULL) { _debug("IAX: Call doesn't exists\n"); \
return false; }
IAXVoIPLink::IAXVoIPLink(const AccountID& accountID)
: VoIPLink(accountID)
{
_evThread = new EventThread(this);
_regSession = NULL;
_nextRefreshStamp = 0;
// to get random number for RANDOM_PORT
srand (time(NULL));
audiolayer = NULL;
_receiveDataDecoded = new int16[IAX__20S_48KHZ_MAX];
_sendDataEncoded = new unsigned char[IAX__20S_8KHZ_MAX];
// we estimate that the number of format after a conversion 8000->48000 is expanded to 6 times
_dataAudioLayer = new SFLDataFormat[IAX__20S_48KHZ_MAX];
_floatBuffer8000 = new float32[IAX__20S_8KHZ_MAX];
_floatBuffer48000 = new float32[IAX__20S_48KHZ_MAX];