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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2019 Neil C Smith.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Please visit https://www.neilcsmith.net if you need additional information or
* have any questions.
*
*/
package org.jaudiolibs.audioservers;
import java.util.Iterator;
import org.jaudiolibs.audioservers.util.ObjectLookup;
/**
* Provides details of the configuration of the server from which an AudioClient
* will be called.
*
* Instances of this class can maintain a list of arbitrary extension Objects
* that can be accessed using the find() or findAll() methods. These provide a
* mechanism to pass additional configuration parameters when constructing servers
* or between server and client.
*
*
* @author Neil C Smith
*/
public final class AudioConfiguration {
private final float sampleRate;
private final int inputChannelCount;
private final int outputChannelCount;
private final int maxBufferSize;
private final boolean fixedBufferSize;
private final ObjectLookup lookup;
/**
* Create an AudioConfiguration with fixed buffer size. Extension Objects
* passed into the constructor can be accessed using the find() or findAll()
* methods.
*
* @param sampleRate
* @param inputChannelCount
* @param outputChannelCount
* @param bufferSize
* @param exts
*/
public AudioConfiguration(float sampleRate,
int inputChannelCount,
int outputChannelCount,
int bufferSize,
Object ... exts) {
this(sampleRate, inputChannelCount, outputChannelCount, bufferSize, true, exts);
}
/**
* Create an AudioConfiguration. Extension Objects
* passed into the constructor can be accessed using the find() or findAll()
* methods.
*
* @param sampleRate
* @param inputChannelCount
* @param outputChannelCount
* @param bufferSize
* @param exts
*/
public AudioConfiguration(float sampleRate,
int inputChannelCount,
int outputChannelCount,
int maxBufferSize,
boolean fixedBufferSize,
Object ... exts) {
this.sampleRate = validate(sampleRate, 1);
this.inputChannelCount = validate(inputChannelCount, 0);
this.outputChannelCount = validate(outputChannelCount, 0);
this.maxBufferSize = validate(maxBufferSize, 1);
this.fixedBufferSize = fixedBufferSize;
if (exts == null || exts.length == 0) {
lookup = ObjectLookup.EMPTY;
} else {
lookup = new ObjectLookup(exts);
}
}
/**
* Create an AudioConfiguration without extensions.
*
* @param sampleRate
* @param inputChannelCount
* @param outputChannelCount
* @param maxBufferSize
* @param fixedBufferSize
*/
public AudioConfiguration(float sampleRate,
int inputChannelCount,
int outputChannelCount,
int maxBufferSize,
boolean fixedBufferSize) {
this(sampleRate, inputChannelCount, outputChannelCount, maxBufferSize, fixedBufferSize, (Object[]) null);
}
private static float validate(float value, float minimum) {
if (value < minimum) {
throw new IllegalArgumentException();
}
return value;
}
private static int validate(int value, int minimum) {
if (value < minimum) {
throw new IllegalArgumentException();
}
return value;
}
/**
* Is the buffer size fixed. If variable, the buffer size will always be
* between 1 and getMaxBufferSize().
*
* @return true if fixed, otherwise variable.
*/
public boolean isFixedBufferSize() {
return fixedBufferSize;
}
/**
* Get the number of input channels.
*
* @return int ( >=0 )
*/
public int getInputChannelCount() {
return inputChannelCount;
}
/**
* Get the maximum buffer size. This is the buffer size in samples per
* channel.
*
* @return int ( >=1 )
*/
public int getMaxBufferSize() {
return maxBufferSize;
}
/**
* Get the number of output channels.
*
* @return int ( >=0 )
*/
public int getOutputChannelCount() {
return outputChannelCount;
}
/**
* Get the sample rate.
*
* @return float ( >=1 )
*/
public float getSampleRate() {
return sampleRate;
}
/**
* Find and return the first extension Object of the given type.
*
* @param
* @param type
* @return Object or null
*/
public T find(Class type) {
return lookup.find(type);
}
/**
* Find and return all extension Objects of the given type.
*
* @param
* @param type
* @return
*/
public Iterable findAll(Class type) {
return lookup.findAll(type);
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder("Audio Configuration --- \n");
sb.append("Sample Rate : ").append(sampleRate).append('\n');
sb.append("Input Channels : ").append(inputChannelCount).append('\n');
sb.append("Output Channels : ").append(outputChannelCount).append('\n');
sb.append("Max Buffer Size : ").append(maxBufferSize).append('\n');
sb.append("Fixed Buffer Size : ").append(fixedBufferSize).append('\n');
Iterator
