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/**
* Copyright (c) 2013 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.
*
* Note: Rewrite started by Julien Goussej 2013-03-27 commit 6292ed9712b17f849f22221aea9d586c3a363c09
*/
package com.jogamp.openal.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteOrder;
import com.jogamp.common.util.Bitstream;
import com.jogamp.openal.ALException;
/**
* A Loader utility for (.wav) files. Creates a WAVData object containing the
* data used by the AL.alBufferData method.
*/
public class WAVLoader {
/**
* This method loads a (.wav) file into a WAVData object.
*
* @param filename The name of the (.wav) file
*
* @return a WAVData object containing the audio data
*
* @throws ALException 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 loadFromFile(final String filename) throws ALException, IOException {
final File soundFile = new File(filename);
final InputStream is = new FileInputStream(soundFile);
return loadFromStreamImpl(is);
}
/**
* This method loads a (.wav) file into a WAVData object.
*
* @param stream An InputStream for the .WAV stream.
*
* @return a WAVData object containing the audio data
*
* @throws ALException 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(final InputStream stream) throws ALException, IOException {
return loadFromStreamImpl(stream);
}
private static final int RIFF = 0x52494646;
private static final int RIFX = 0x52494658;
private static final int WAVE = 0x57415645;
private static final int FACT = 0x66616374;
private static final int FMT = 0x666D7420;
private static final int DATA = 0x64617461;
private static WAVData loadFromStreamImpl(final InputStream aIn) throws ALException, IOException {
/**
* references:
* http://www.sonicspot.com/guide/wavefiles.html
* https://ccrma.stanford.edu/courses/422/projects/WaveFormat/
* http://stackoverflow.com/questions/1111539/is-the-endianness-of-format-params-guaranteed-in-riff-wav-files
* http://sharkysoft.com/archive/lava/docs/javadocs/lava/riff/wave/doc-files/riffwave-content.htm
*/
final Bitstream.ByteInputStream bis = new Bitstream.ByteInputStream(aIn);
final Bitstream<InputStream> bs = new Bitstream<InputStream>(bis, false);
bs.setThrowIOExceptionOnEOF(true);
try {
final boolean bigEndian; // FIXME: for all data incl. signatures ?
final long riffMarker = bs.readUInt32(true /* msbFirst */, true /* bigEndian */);
if ( RIFF == riffMarker ) {
bigEndian = false;
} else if( RIFX == riffMarker ) {
bigEndian = true;
} else {
throw new ALException("Invalid RIF header: 0x"+Integer.toHexString((int)riffMarker)+", "+bs);
}
final long riffLenL = bs.readUInt32(true /*msbFirst*/, bigEndian);
final int riffLenI = Bitstream.uint32LongToInt(riffLenL);
final long wavMarker = bs.readUInt32(true /* msbFirst */, true /* bigEndian */);
if ( WAVE != wavMarker ) {
throw new ALException("Invalid WAV header: 0x"+Integer.toHexString((int)wavMarker)+", "+bs);
}
boolean foundFmt = false;
boolean foundData = false;
short sChannels = 0, sSampleSizeInBits = 0;
long sampleRate = 0;
long chunkLength = 0;
while (!foundData) {
final int chunkId = (int)bs.readUInt32(true /* msbFirst */, true /* bigEndian */);
chunkLength = bs.readUInt32(true /* msbFirst */, bigEndian);
switch (chunkId) {
case FMT:
foundFmt = true;
@SuppressWarnings("unused")
final int compressionCode = bs.readUInt16(true /* msbFirst */, bigEndian);
sChannels = (short)bs.readUInt16(true /* msbFirst */, bigEndian);
sampleRate = bs.readUInt32(true /* msbFirst */, bigEndian);
@SuppressWarnings("unused")
final long bytesPerSeconds = bs.readUInt32(true /* msbFirst */, bigEndian);
@SuppressWarnings("unused")
final short blockAlignment = (short) bs.readUInt16(true /* msbFirst */, bigEndian);
sSampleSizeInBits = (short) bs.readUInt16(true /* msbFirst */, bigEndian);
bs.skip( 8 * ( chunkLength - 16 ) );
break;
case FACT:
// FIXME: compression format dependent data?
bs.skip( 8 * chunkLength );
break;
case DATA:
if (!foundFmt) {
throw new ALException("WAV fmt chunks must be before data chunks: "+bs);
}
foundData = true;
break;
default:
// unrecognized chunk, skips it
bs.skip( 8 * chunkLength );
}
}
final int channels = sChannels;
final int sampleSizeInBits = sSampleSizeInBits;
final float fSampleRate = sampleRate;
return WAVData.loadFromStream(bs.getSubStream(), riffLenI, channels, sampleSizeInBits,
Math.round(fSampleRate), bigEndian ? ByteOrder.BIG_ENDIAN : ByteOrder.LITTLE_ENDIAN, false);
} finally {
bs.close();
}
}
}
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