jamulus/windows/sound.h

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/******************************************************************************\
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* Copyright (c) 2004-2020
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*
* Author(s):
* Volker Fischer
*
******************************************************************************
*
* 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
*
\******************************************************************************/
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#pragma once
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#include <QMutex>
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#include <QMessageBox>
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#include "../src/util.h"
#include "../src/global.h"
#include "../src/soundbase.h"
// copy the ASIO SDK in the llcon/windows directory: "llcon/windows/ASIOSDK2" to
// get it work
#include "asiosys.h"
#include "asio.h"
#include "asiodrivers.h"
/* Definitions ****************************************************************/
// stereo for input and output
#define NUM_IN_OUT_CHANNELS 2
/* Classes ********************************************************************/
class CSound : public CSoundBase
{
public:
CSound ( void (*fpNewCallback) ( CVector<int16_t>& psData, void* arg ),
void* arg,
const int iCtrlMIDIChannel,
const bool bNoAutoJackConnect );
virtual ~CSound() { UnloadCurrentDriver(); }
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virtual int Init ( const int iNewPrefMonoBufferSize );
virtual void Start();
virtual void Stop();
virtual void OpenDriverSetup() { ASIOControlPanel(); }
// channel selection
virtual int GetNumInputChannels() { return static_cast<int> ( lNumInChanPlusAddChan ); }
virtual QString GetInputChannelName ( const int iDiD ) { return channelInputName[iDiD]; }
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virtual void SetLeftInputChannel ( const int iNewChan );
virtual void SetRightInputChannel ( const int iNewChan );
virtual int GetLeftInputChannel() { return vSelectedInputChannels[0]; }
virtual int GetRightInputChannel() { return vSelectedInputChannels[1]; }
virtual int GetNumOutputChannels() { return static_cast<int> ( lNumOutChan ); }
virtual QString GetOutputChannelName ( const int iDiD ) { return channelInfosOutput[iDiD].name; }
virtual void SetLeftOutputChannel ( const int iNewChan );
virtual void SetRightOutputChannel ( const int iNewChan );
virtual int GetLeftOutputChannel() { return vSelectedOutputChannels[0]; }
virtual int GetRightOutputChannel() { return vSelectedOutputChannels[1]; }
virtual double GetInOutLatencyMs() { return dInOutLatencyMs; }
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protected:
virtual QString LoadAndInitializeDriver ( int iIdx,
bool bOpenDriverSetup );
virtual void UnloadCurrentDriver();
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int GetActualBufferSize ( const int iDesiredBufferSizeMono );
QString CheckDeviceCapabilities();
bool CheckSampleTypeSupported ( const ASIOSampleType SamType );
bool CheckSampleTypeSupportedForCHMixing ( const ASIOSampleType SamType );
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void ResetChannelMapping();
static void GetSelCHAndAddCH ( const int iSelCH, const int iNumInChan,
int& iSelCHOut, int& iSelAddCHOut )
{
// we have a mixed channel setup
// definitions:
// - mixed channel setup only for 4 physical inputs:
// SelCH == 4: Ch 0 + Ch 2
// SelCh == 5: Ch 0 + Ch 3
// SelCh == 6: Ch 1 + Ch 2
// SelCh == 7: Ch 1 + Ch 3
if ( iSelCH >= iNumInChan )
{
iSelAddCHOut = ( ( iSelCH - iNumInChan ) % 2 ) + 2;
iSelCHOut = ( iSelCH - iNumInChan ) / 2;
}
else
{
iSelAddCHOut = -1;
iSelCHOut = iSelCH;
}
}
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int iASIOBufferSizeMono;
int iASIOBufferSizeStereo;
long lNumInChan;
long lNumInChanPlusAddChan; // includes additional "added" channels
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long lNumOutChan;
double dInOutLatencyMs;
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CVector<int> vSelectedInputChannels;
CVector<int> vSelectedOutputChannels;
CVector<int16_t> vecsTmpAudioSndCrdStereo;
QMutex ASIOMutex;
// utility functions
static int16_t Flip16Bits ( const int16_t iIn );
static int32_t Flip32Bits ( const int32_t iIn );
static int64_t Flip64Bits ( const int64_t iIn );
// audio hardware buffer info
struct sHWBufferInfo
{
long lMinSize;
long lMaxSize;
long lPreferredSize;
long lGranularity;
} HWBufferInfo;
// ASIO stuff
ASIODriverInfo driverInfo;
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ASIOBufferInfo bufferInfos[2 * MAX_NUM_IN_OUT_CHANNELS]; // for input and output buffers -> "2 *"
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ASIOChannelInfo channelInfosInput[MAX_NUM_IN_OUT_CHANNELS];
QString channelInputName[MAX_NUM_IN_OUT_CHANNELS];
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ASIOChannelInfo channelInfosOutput[MAX_NUM_IN_OUT_CHANNELS];
bool bASIOPostOutput;
ASIOCallbacks asioCallbacks;
// callbacks
static void bufferSwitch ( long index, ASIOBool processNow );
static ASIOTime* bufferSwitchTimeInfo ( ASIOTime* timeInfo, long index, ASIOBool processNow );
static void sampleRateChanged ( ASIOSampleRate ) {}
static long asioMessages ( long selector, long value, void* message, double* opt );
char* cDriverNames[MAX_NUMBER_SOUND_CARDS];
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};