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/*
* Copyright 1997 Phil Burk, Mobileer Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.jsyn.unitgen;
import com.jsyn.ports.UnitInputPort;
import com.jsyn.ports.UnitOutputPort;
/**
* PanControl unit.
* <P>
* Generates control signals that can be used to control a mixer or the amplitude ports of two
* units.
*
* <PRE>
* temp = (pan * 0.5) + 0.5;
* output[0] = temp;
* output[1] = 1.0 - temp;
* </PRE>
* <P>
*
* @author (C) 1997-2009 Phil Burk, SoftSynth.com
*/
public class PanControl extends UnitGenerator {
public UnitInputPort pan;
public UnitOutputPort output;
/* Define Unit Ports used by connect() and set(). */
public PanControl() {
addPort(pan = new UnitInputPort("Pan"));
addPort(output = new UnitOutputPort(2, "Output", 0.0));
}
@Override
public void generate(int start, int limit) {
double[] panPtr = pan.getValues();
double[] output0s = output.getValues(0);
double[] output1s = output.getValues(1);
for (int i = start; i < limit; i++) {
double gainB = (panPtr[i] * 0.5) + 0.5; /*
* Scale and offset to 0.0 to 1.0
*/
output0s[i] = 1.0 - gainB;
output1s[i] = gainB;
}
}
}
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