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/**
* Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
* Copyright (c) 2011 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* -Redistribution of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* -Redistribution in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind.
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
* ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS
* LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A
* RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
* IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT
* OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
* PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS
* BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use in the
* design, construction, operation or maintenance of any nuclear facility.
*/
package com.jogamp.openal.util;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import com.jogamp.openal.ALConstants;
import com.jogamp.openal.UnsupportedAudioFileException;
/**
* This class is a holder for WAV (.wav ) file Data returned from the WavLoader,
* or directly via {@link #loadFromStream(InputStream, int, int, int)}.
*
* @author Athomas Goldberg, et.al.
*/
public final class WAVData {
/** The audio data */
public final ByteBuffer data;
/** the format of the Data. One of:
* <pre>
* AL.AL_FORMAT_MONO8
* AL.AL_FORMAT_MONO16
* AL.AL_FORMAT_STEREO8
* AL.AL_FORMAT_STEREO16
* </pre>
*
*/
public final int format;
/** Size (in bytes) of the data */
public final int size;
/** The frequency of the data */
public final int freq;
/** flag indicating whether or not the sound in the data should loop */
public final boolean loop;
public WAVData(ByteBuffer data, int format, int size, int freq, boolean loop) {
this.data = data;
this.format = format;
this.size = size;
this.freq = freq;
this.loop = loop;
}
/**
* This method loads a (.wav) file into a WAVData object.
*
* @param stream An InputStream for the .WAV stream
* @param numChannels
* @param bits
* @param sampleRate
*
* @return a WAVData object containing the audio data
*
* @throws UnsupportedAudioFileException if the format of the audio if not
* supported.
* @throws IOException If the file can no be found or some other IO error
* occurs
*/
public static WAVData loadFromStream(InputStream aIn, int numChannels, int bits, int sampleRate)
throws IOException {
ReadableByteChannel aChannel = Channels.newChannel(aIn);
int format = ALConstants.AL_FORMAT_MONO8;
if ((bits == 8) && (numChannels == 1)) {
format = ALConstants.AL_FORMAT_MONO8;
} else if ((bits == 16) && (numChannels == 1)) {
format = ALConstants.AL_FORMAT_MONO16;
} else if ((bits == 8) && (numChannels == 2)) {
format = ALConstants.AL_FORMAT_STEREO8;
} else if ((bits == 16) && (numChannels == 2)) {
format = ALConstants.AL_FORMAT_STEREO16;
}
int size = aIn.available();
ByteBuffer buffer = ByteBuffer.allocateDirect(size);
while (buffer.remaining() > 0) {
aChannel.read(buffer);
}
buffer.rewind();
// Must byte swap on big endian platforms
// Thanks to swpalmer on javagaming.org forums for hint at fix
if ((bits == 16) && (ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN)) {
int len = buffer.remaining();
for (int i = 0; i < len; i += 2) {
byte a = buffer.get(i);
byte b = buffer.get(i+1);
buffer.put(i, b);
buffer.put(i+1, a);
}
}
WAVData result = new WAVData(buffer, format, size, sampleRate, false);
aIn.close();
return result;
}
}
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