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/******************************************************************************\
* Copyright (c) 2004-2020
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*
\******************************************************************************/
#pragma once
#ifndef JACK_REPLACES_ASIO // these headers are not available in Windows OS
# include <unistd.h>
# include <sys/ioctl.h>
#endif
#include <fcntl.h>
#include <sys/types.h>
#include <stdlib.h>
#include <stdio.h>
#include <QThread>
#include <string.h>
#include "util.h"
#include "soundbase.h"
#include "global.h"
#if WITH_SOUND
# include <jack/jack.h>
# include <jack/midiport.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 1
#define MAX_SND_BUF_IN 200
#define MAX_SND_BUF_OUT 200
/* Classes ********************************************************************/
#if WITH_SOUND
class CSound : public CSoundBase
{
public:
CSound ( void (*fpNewProcessCallback) ( CVector<short>& psData, void* arg ),
void* arg,
const QString& strMIDISetup,
const bool bNoAutoJackConnect,
const QString& strJackClientName ) :
CSoundBase ( "Jack", fpNewProcessCallback, arg, strMIDISetup ),
iJACKBufferSizeMono ( 0 ), bJackWasShutDown ( false ), fInOutLatencyMs ( 0.0f ) { OpenJack ( bNoAutoJackConnect, strJackClientName.toLocal8Bit().data() ); }
virtual ~CSound() { CloseJack(); }
virtual int Init ( const int iNewPrefMonoBufferSize );
virtual void Start();
virtual void Stop();
virtual float GetInOutLatencyMs() { return fInOutLatencyMs; }
// these variables should be protected but cannot since we want
// to access them from the callback function
CVector<short> vecsTmpAudioSndCrdStereo;
int iJACKBufferSizeMono;
int iJACKBufferSizeStero;
bool bJackWasShutDown;
jack_port_t* input_port_left;
jack_port_t* input_port_right;
jack_port_t* output_port_left;
jack_port_t* output_port_right;
jack_port_t* input_port_midi;
protected:
void OpenJack ( const bool bNoAutoJackConnect,
const char* jackClientName );
void CloseJack();
// callbacks
static int process ( jack_nframes_t nframes, void* arg );
static int bufferSizeCallback ( jack_nframes_t, void *arg );
static void shutdownCallback ( void* );
jack_client_t* pJackClient;
float fInOutLatencyMs;
};
#else
// no sound -> dummy class definition
#include "server.h"
class CSound : public CSoundBase
{
Q_OBJECT
public:
CSound ( void (*fpNewProcessCallback) ( CVector<short>& psData, void* pParg ),
void* pParg,
const QString& strMIDISetup,
const bool ,
const QString& ) :
CSoundBase ( "nosound", fpNewProcessCallback, pParg, strMIDISetup ),
HighPrecisionTimer ( true ) { HighPrecisionTimer.Start();
QObject::connect ( &HighPrecisionTimer, &CHighPrecisionTimer::timeout,
this, &CSound::OnTimer ); }
virtual ~CSound() {}
virtual int Init ( const int iNewPrefMonoBufferSize ) { CSoundBase::Init ( iNewPrefMonoBufferSize );
vecsTemp.Init ( 2 * iNewPrefMonoBufferSize );
return iNewPrefMonoBufferSize; }
CHighPrecisionTimer HighPrecisionTimer;
CVector<short> vecsTemp;
public slots:
void OnTimer() { vecsTemp.Reset ( 0 ); if ( IsRunning() ) { ProcessCallback ( vecsTemp ); } }
};
#endif // WITH_SOUND
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