/******************************************************************************\
 * Technische Universitaet Darmstadt, Institut fuer Nachrichtentechnik
 * Copyright (c) 2001
 *
 * Author(s):
 *	Alexander Kurpiers
 * 
 * Decription:
 * Linux sound interface
 *
 ******************************************************************************
 *
 * 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 2 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., 
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
\******************************************************************************/

#ifndef _SOUNDIN_H
#define _SOUNDIN_H

#include "../../common/GlobalDefinitions.h"
#include "../../common/util/Buffer.h"
#include "soundcommon.h"

/* Definitions ****************************************************************/
#define RECORDING_CHANNEL		0		/* 0: Left, 1: Right */

#define SOUNDBUFLEN 102400

#define FRAGSIZE 8192
//#define FRAGSIZE 1024

/* Classes ********************************************************************/
class CSoundIn 
{
public:
	CSoundIn();
	virtual ~CSoundIn() {}

	virtual void				Enumerate(vector<string>& choices) { choices = names; }
	virtual void				SetDev(int iNewDevice);
	virtual int					GetDev();

#if WITH_SOUND
	void Init(int iNewBufferSize, _BOOLEAN bNewBlocking = TRUE);
	_BOOLEAN Read(CVector<short>& psData);
	void Close();
	
protected:
	void Init_HW();
	int read_HW( void * recbuf, int size);
	void close_HW( void );
	
	int 	iBufferSize, iInBufferSize;
	short int *tmprecbuf;
	_BOOLEAN	bBlockingRec;
	vector<string> devices;
#ifdef USE_ALSA
	snd_pcm_t *handle;
#endif
#ifdef USE_DEVDSP
	COSSDev dev;
#endif

	class CRecThread : public CThread
	{
	public:
		virtual void run();
		CSoundBuf SoundBuf;
		CSoundIn*	pSoundIn;
	protected:
		_SAMPLE	tmprecbuf[NUM_IN_CHANNELS * FRAGSIZE];
	} RecThread;
	
#else
	/* Dummy definitions */
	void Init(int iNewBufferSize, _BOOLEAN bNewBlocking = TRUE){}
	_BOOLEAN Read(CVector<short>& psData){return FALSE;}
	void Close(){}
#endif
protected:
	vector<string> names;
	int	iCurrentDevice;
};


#endif