106 lines
3 KiB
C++
Executable file
106 lines
3 KiB
C++
Executable file
/******************************************************************************\
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* Copyright (c) 2004-2005
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*
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* Author(s):
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* Volker Fischer, Alexander Kurpiers
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*
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* This code is based on the Open-Source sound interface implementation of
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* the Dream DRM Receiver project.
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*
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\******************************************************************************/
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#if !defined(_SOUND_H__9518A621345F78_3634567_8C0D_EEBF182CF549__INCLUDED_)
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#define _SOUND_H__9518A621345F78_3634567_8C0D_EEBF182CF549__INCLUDED_
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "util.h"
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#include "global.h"
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#if WITH_SOUND
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# define ALSA_PCM_NEW_HW_PARAMS_API
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# define ALSA_PCM_NEW_SW_PARAMS_API
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# include <alsa/asoundlib.h>
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#endif
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/* Definitions ****************************************************************/
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#define NUM_IN_OUT_CHANNELS 2 /* always stereo */
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/* the number of periods is critical for latency */
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#define NUM_PERIOD_BLOCKS_IN 2
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#define NUM_PERIOD_BLOCKS_OUT 2
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#define MAX_SND_BUF_IN 200
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#define MAX_SND_BUF_OUT 200
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/* Classes ********************************************************************/
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class CSound
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{
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public:
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CSound()
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#if WITH_SOUND
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: rhandle(NULL), phandle(NULL), iCurPeriodSizeIn(NUM_PERIOD_BLOCKS_IN),
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iCurPeriodSizeOut(NUM_PERIOD_BLOCKS_OUT), bChangParamIn(true),
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bChangParamOut(true)
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#endif
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{}
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virtual ~CSound() {Close();}
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/* Not implemented yet, always return one device and default string */
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int GetNumDev() {return 1;}
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void SetOutDev(int iNewDev) {}
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void SetInDev(int iNewDev) {}
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/* Return invalid device ID which is the same as using "wave mapper" which
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we assume here to be used */
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int GetOutDev() {return 1;}
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int GetInDev() {return 1;}
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#if WITH_SOUND
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void SetInNumBuf(int iNewNum);
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int GetInNumBuf() {return iCurPeriodSizeIn;}
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void SetOutNumBuf(int iNewNum);
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int GetOutNumBuf() {return iCurPeriodSizeOut;}
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void InitRecording(int iNewBufferSize, bool bNewBlocking = true);
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void InitPlayback(int iNewBufferSize, bool bNewBlocking = false);
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bool Read(CVector<short>& psData);
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bool Write(CVector<short>& psData);
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void Close();
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protected:
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snd_pcm_t* rhandle;
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snd_pcm_t* phandle;
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bool SetHWParams(snd_pcm_t* handle, const int iBufferSizeIn,
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const int iNumPeriodBlocks);
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int iBufferSizeOut;
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int iBufferSizeIn;
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bool bChangParamIn;
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int iCurPeriodSizeIn;
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bool bChangParamOut;
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int iCurPeriodSizeOut;
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#else
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/* Dummy definitions */
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void SetInNumBuf(int iNewNum) {}
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int GetInNumBuf() {return 1;}
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void SetOutNumBuf(int iNewNum) {}
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int GetOutNumBuf() {return 1;}
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void InitRecording(int iNewBufferSize, bool bNewBlocking = true) {printf("no sound!");}
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void InitPlayback(int iNewBufferSize, bool bNewBlocking = false) {printf("no sound!");}
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bool Read(CVector<short>& psData) {printf("no sound!"); return false;}
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bool Write(CVector<short>& psData) {printf("no sound!"); return false;}
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void Close() {}
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#endif
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};
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#endif // !defined(_SOUND_H__9518A621345F78_3634567_8C0D_EEBF182CF549__INCLUDED_)
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