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/*
* EmptyWaveGenerator.cs
* Copyright © 2010-2011 kbinani
*
* This file is part of org.kbinani.cadencii.
*
* org.kbinani.cadencii is free software; you can redistribute it and/or
* modify it under the terms of the GPLv3 License.
*
* org.kbinani.cadencii 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.
*/
#if JAVA
package org.kbinani.cadencii;
#else
using System;
using System.Threading;
namespace org.kbinani.cadencii
{
using boolean = System.Boolean;
#endif
/// <summary>
/// 無音の波形を送信するWaveGenerator
/// </summary>
#if JAVA
public class EmptyWaveGenerator extends WaveUnit implements WaveGenerator
#else
public class EmptyWaveGenerator : WaveUnit, WaveGenerator
#endif
{
private const int VERSION = 0;
private const int BUFLEN = 1024;
private WaveReceiver mReceiver = null;
private boolean mAbortRequested = false;
private boolean mRunning = false;
private long mTotalAppend = 0L;
private long mTotalSamples = 0L;
private int mSampleRate = 0;
public int getSampleRate()
{
return mSampleRate;
}
public boolean isRunning()
{
return mRunning;
}
public long getPosition()
{
return mTotalAppend;
}
public long getTotalSamples()
{
return mTotalSamples;
}
public double getProgress()
{
if ( mTotalSamples <= 0 ) {
return 0.0;
} else {
return mTotalAppend / (double)mTotalSamples;
}
}
public override int getVersion()
{
return VERSION;
}
public override void setConfig( String parameter )
{
// do nothing
}
public void begin( long samples, WorkerState state )
{
if ( mReceiver == null ) return;
mRunning = true;
mTotalSamples = samples;
double[] l = new double[BUFLEN];
double[] r = new double[BUFLEN];
for ( int i = 0; i < BUFLEN; i++ ) {
l[i] = 0.0;
r[i] = 0.0;
}
long remain = samples;
while ( remain > 0 && !mAbortRequested ) {
int amount = (remain > BUFLEN) ? BUFLEN : (int)remain;
mReceiver.push( l, r, amount );
remain -= amount;
mTotalAppend += amount;
}
mRunning = false;
mReceiver.end();
}
public void setReceiver( WaveReceiver receiver )
{
mReceiver = receiver;
}
public void init( VsqFileEx vsq, int track, int start_clock, int end_clock, int sample_rate )
{
mSampleRate = sample_rate;
}
public void stop()
{
if ( mRunning ) {
mAbortRequested = true;
while ( mRunning ) {
#if JAVA
try{
Thread.sleep( 100 );
}catch( Exception ex ){
}
#else
Thread.Sleep( 100 );
#endif
}
}
}
}
#if !JAVA
}
#endif
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