117 lines
3.8 KiB
C++
Executable file
117 lines
3.8 KiB
C++
Executable file
/******************************************************************************\
|
|
* Copyright (c) 2004-2009
|
|
*
|
|
* Author(s):
|
|
* Volker Fischer, Alexander Kurpiers
|
|
*
|
|
* This code is based on the Open-Source sound interface implementation of
|
|
* the Dream DRM Receiver project.
|
|
*
|
|
\******************************************************************************/
|
|
|
|
#if !defined(_SOUND_H__9518A621345F78_3634567_8C0D_EEBF182CF549__INCLUDED_)
|
|
#define _SOUND_H__9518A621345F78_3634567_8C0D_EEBF182CF549__INCLUDED_
|
|
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/ioctl.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <qthread.h>
|
|
#include <string.h>
|
|
#include "util.h"
|
|
#include "soundbase.h"
|
|
#include "global.h"
|
|
|
|
#if WITH_SOUND
|
|
# define ALSA_PCM_NEW_HW_PARAMS_API
|
|
# define ALSA_PCM_NEW_SW_PARAMS_API
|
|
# include <alsa/asoundlib.h>
|
|
#endif
|
|
|
|
|
|
/* Definitions ****************************************************************/
|
|
#define NUM_IN_OUT_CHANNELS 2 // always stereo
|
|
|
|
// the number of periods is critical for latency
|
|
#define NUM_PERIOD_BLOCKS_IN 2
|
|
#define NUM_PERIOD_BLOCKS_OUT 2
|
|
|
|
#define MAX_SND_BUF_IN 200
|
|
#define MAX_SND_BUF_OUT 200
|
|
|
|
|
|
/* Classes ********************************************************************/
|
|
class CSound : public CSoundBase
|
|
{
|
|
public:
|
|
CSound ( void (*fpNewCallback) ( CVector<short>& psData, void* arg ), void* arg ) :
|
|
#if WITH_SOUND
|
|
CSoundBase ( false, fpNewCallback, arg ), rhandle ( NULL ),
|
|
phandle ( NULL ), iCurPeriodSizeIn ( NUM_PERIOD_BLOCKS_IN ),
|
|
iCurPeriodSizeOut ( NUM_PERIOD_BLOCKS_OUT ), bChangParamIn ( true ),
|
|
bChangParamOut ( true ) {}
|
|
#else
|
|
CSoundBase ( false, fpNewCallback, arg ) {}
|
|
#endif
|
|
virtual ~CSound() { Close(); }
|
|
|
|
// not implemented yet, always return one device and default string
|
|
int GetNumDev() { return 1; }
|
|
std::string GetDeviceName ( const int iDiD ) { return "wave mapper"; }
|
|
int SetDev ( const int iNewDev ) {} // dummy
|
|
int GetDev() { return 0; }
|
|
|
|
#if WITH_SOUND
|
|
void SetInNumBuf ( int iNewNum );
|
|
int GetInNumBuf() { return iCurPeriodSizeIn; }
|
|
void SetOutNumBuf ( int iNewNum );
|
|
int GetOutNumBuf() { return iCurPeriodSizeOut; }
|
|
|
|
virtual void Init ( const int iNewStereoBufferSize )
|
|
{
|
|
// init base class
|
|
CSoundBase::Init ( iNewStereoBufferSize );
|
|
|
|
// set internal buffer size for read and write
|
|
iBufferSizeIn = iNewStereoBufferSize / NUM_IN_OUT_CHANNELS; // mono size
|
|
iBufferSizeOut = iNewStereoBufferSize / NUM_IN_OUT_CHANNELS; // mono size
|
|
|
|
InitRecording();
|
|
InitPlayback();
|
|
}
|
|
virtual bool Read ( CVector<short>& psData );
|
|
virtual bool Write ( CVector<short>& psData );
|
|
virtual void Close();
|
|
|
|
protected:
|
|
void InitRecording();
|
|
void InitPlayback();
|
|
|
|
snd_pcm_t* rhandle;
|
|
snd_pcm_t* phandle;
|
|
|
|
bool SetHWParams ( snd_pcm_t* handle, const int iBufferSizeIn,
|
|
const int iNumPeriodBlocks );
|
|
|
|
int iBufferSizeOut;
|
|
int iBufferSizeIn;
|
|
bool bChangParamIn;
|
|
int iCurPeriodSizeIn;
|
|
bool bChangParamOut;
|
|
int iCurPeriodSizeOut;
|
|
#else
|
|
// dummy definitions
|
|
void SetInNumBuf ( int iNewNum ) {}
|
|
int GetInNumBuf() { return 1; }
|
|
void SetOutNumBuf ( int iNewNum ) {}
|
|
int GetOutNumBuf() { return 1; }
|
|
virtual void Init ( const int iNewStereoBufferSize ) { CSoundBase::Init ( iNewStereoBufferSize ); }
|
|
virtual bool Read ( CVector<short>& psData ) { printf ( "no sound!" ); return false; }
|
|
virtual bool Write ( CVector<short>& psData ) { printf ( "no sound!" ); return false; }
|
|
virtual void Close() {}
|
|
#endif
|
|
};
|
|
|
|
#endif // !defined(_SOUND_H__9518A621345F78_3634567_8C0D_EEBF182CF549__INCLUDED_)
|