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/*
* Amplifier.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;
import java.awt.*;
import java.util.*;
import org.kbinani.*;
#else
using System;
using org.kbinani.java.util;
using org.kbinani.java.awt;
namespace org.kbinani.cadencii
{
#endif
/// <summary>
/// 増幅器の実装
/// </summary>
#if JAVA
public class Amplifier extends WaveUnit implements WaveSender, WaveReceiver
#else
public class Amplifier : WaveUnit, WaveSender, WaveReceiver
#endif
{
private const int _BUFLEN = 1024;
private double[] mBufferL = new double[_BUFLEN];
private double[] mBufferR = new double[_BUFLEN];
private double mAmpL = 1.0;
private double mAmpR = 1.0;
private long mPosition = 0;
private WaveReceiver mReceiver = null;
private WaveSender mSender = null;
private int mVersion = 0;
private BasicStroke mStroke = null;
private IAmplifierView mView = null;
public void setAmplifierView( IAmplifierView view ) {
mView = view;
}
public override void paintTo( Graphics2D graphics, int x, int y, int width, int height ) {
// 現在の描画時のストローク、色を保存しておく
Stroke old_stroke = graphics.getStroke();
Color old_color = graphics.getColor();
// 描画用のストロークが初期化してなかったら初期化
if ( mStroke == null ) {
mStroke = new BasicStroke();
}
// 枠と背景を描画
paintBackground( graphics, mStroke, x, y, width, height, Color.black, PortUtil.Pink );
// デバイス名を書く
PortUtil.drawStringEx(
(Graphics)graphics, "Amplifier", AppManager.baseFont10,
new Rectangle( x, y, width, height ),
PortUtil.STRING_ALIGN_CENTER, PortUtil.STRING_ALIGN_CENTER );
// 描画時のストローク、色を元に戻す
graphics.setStroke( old_stroke );
graphics.setColor( old_color );
}
public override int getVersion() {
return mVersion;
}
public override void setConfig( String parameter ) {
// do nothing (ı _ ı )
}
public void setReceiver( WaveReceiver r ) {
if ( mReceiver != null ) {
mReceiver.end();
}
mReceiver = r;
}
public void setSender( WaveSender s ) {
if ( mSender != null ) {
mSender.end();
}
mSender = s;
}
public long getPosition() {
return mPosition;
}
public void end() {
if ( mReceiver != null ) {
mReceiver.end();
}
if ( mSender != null ) {
mSender.end();
}
}
public void setAmplify( double amp_left, double amp_right ) {
mAmpL = amp_left;
mAmpR = amp_right;
}
public void push( double[] l, double[] r, int length ) {
if ( mReceiver == null ) {
mPosition += length;
return;
}
int remain = length;
while ( remain > 0 ) {
int amount = (remain > _BUFLEN) ? _BUFLEN : remain;
for ( int i = 0; i < amount; i++ ) {
mBufferL[i] = 0.0;
mBufferR[i] = 0.0;
}
int offset = length - remain;
if ( mView != null ) {
mAmpL = mView.getAmplifyL();
mAmpR = mView.getAmplifyR();
}
// 左チャンネル
if ( mAmpL != 0.0 ) {
if ( mAmpL == 1.0 ) {
// 増幅率1の場合
for ( int i = 0; i < amount; i++ ) {
mBufferL[i] = l[i + offset];
}
} else {
for ( int i = 0; i < amount; i++ ) {
mBufferL[i] = l[i + offset] * mAmpL;
}
}
for ( int i = 0; i < amount; i++ ) {
if ( mBufferL[i] > 1.0 ) {
mBufferL[i] = 1.0;
} else if ( mBufferL[i] < -1.0 ) {
mBufferL[i] = -1.0;
}
}
}
// 右チャンネル
if ( mAmpR != 0.0 ) {
if ( mAmpR == 1.0 ) {
// 増幅率1の場合
for ( int i = 0; i < amount; i++ ) {
mBufferR[i] = r[i + offset];
}
} else {
for ( int i = 0; i < amount; i++ ) {
mBufferR[i] = r[i + offset] * mAmpR;
}
}
for ( int i = 0; i < amount; i++ ) {
if ( mBufferR[i] > 1.0 ) {
mBufferR[i] = 1.0;
} else if ( mBufferR[i] < -1.0 ) {
mBufferR[i] = -1.0;
}
}
}
remain -= amount;
mPosition += amount;
mReceiver.push( mBufferL, mBufferR, amount );
}
}
public void pull( double[] l, double[] r, int length ) {
for ( int i = 0; i < length; i++ ){
r[i] = 0.0;
l[i] = 0.0;
}
int remain = length;
while ( remain > 0 ) {
int amount = (remain > _BUFLEN) ? _BUFLEN : remain;
int offset = length - remain;
mSender.pull( mBufferL, mBufferR, amount );
if ( mView != null ) {
mAmpL = mView.getAmplifyL();
mAmpR = mView.getAmplifyR();
}
for ( int i = 0; i < amount; i++ ) {
l[i + offset] += mBufferL[i] * mAmpL;
r[i + offset] += mBufferR[i] * mAmpR;
}
remain -= amount;
}
for ( int i = 0; i < length; i++ ) {
if ( l[i] > 1.0 ) {
l[i] = 1.0;
} else if (l[i] < -1.0 ) {
l[i] = -1.0;
}
if ( r[i] > 1.0 ) {
r[i] = 1.0;
} else if ( r[i] < -1.0 ) {
r[i] = -1.0;
}
}
}
}
#if !JAVA
}
#endif
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