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/*
* Copyright (C) 2002-2004 by Jonathan Naylor G4KLX
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef SoundCard_H
#define SoundCard_H
#include "SoundDev.h"
#include <wx/wx.h>
#ifdef __WINDOWS__
#include <windows.h>
#include <mmsystem.h>
const int NUM_IN_OUT_CHANNELS = 1;
const int BYTES_PER_SAMPLE = 2; /* Must be the same as the size of wxInt16 */
const int BITS_PER_SAMPLE = BYTES_PER_SAMPLE * 8;
const int NUM_SOUND_BUFFERS_IN = 30;
const int NUM_SOUND_BUFFERS_OUT = 30;
#endif
class CSoundCard : public ISoundDev {
public:
CSoundCard(const wxString& device, int sampleRate, int rxBufferSize, int txBufferSize);
virtual ~CSoundCard();
virtual void openWrite();
virtual void openRead();
virtual void read(double* sample, int& len);
virtual void write(double* sample, int len);
virtual void close();
static wxArrayString getDevices();
private:
wxString m_device;
int m_sampleRate;
int m_rxBufferSize;
int m_txBufferSize;
#ifdef __WINDOWS__
UINT m_devIn;
HWAVEIN m_waveIn;
HANDLE m_waveInEvent;
wxInt16* m_waveInBuffer[NUM_SOUND_BUFFERS_IN];
WAVEHDR m_waveInHeader[NUM_SOUND_BUFFERS_IN];
int m_bufferInNum;
UINT m_devOut;
HWAVEOUT m_waveOut;
HANDLE m_waveOutEvent;
wxInt16* m_waveOutBuffer[NUM_SOUND_BUFFERS_OUT];
WAVEHDR m_waveOutHeader[NUM_SOUND_BUFFERS_OUT];
#else
int m_fd;
#endif
#ifdef __WINDOWS__
void addInBuffer();
void getDoneBuffer(int& iCntPrepBuf, int& iIndexDoneBuf) const;
void addOutBuffer(int n);
#endif
};
#endif
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