/*
* Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
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*/
package com.sun.media.sound;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.AudioFileFormat.Type;
import javax.sound.sampled.spi.AudioFileWriter;
/**
* Floating-point encoded (format 3) WAVE file writer.
*
* @author Karl Helgason
*/
public class WaveFloatFileWriter extends AudioFileWriter {
public Type[] getAudioFileTypes() {
return new Type[] { Type.WAVE };
}
public Type[] getAudioFileTypes(AudioInputStream stream) {
if (!stream.getFormat().getEncoding().equals(
AudioFloatConverter.PCM_FLOAT))
return new Type[0];
return new Type[] { Type.WAVE };
}
private void checkFormat(AudioFileFormat.Type type, AudioInputStream stream) {
if (!Type.WAVE.equals(type))
throw new IllegalArgumentException("File type " + type
+ " not supported.");
if (!stream.getFormat().getEncoding().equals(
AudioFloatConverter.PCM_FLOAT))
throw new IllegalArgumentException("File format "
+ stream.getFormat() + " not supported.");
}
public void write(AudioInputStream stream, RIFFWriter writer)
throws IOException {
RIFFWriter fmt_chunk = writer.writeChunk("fmt ");
AudioFormat format = stream.getFormat();
fmt_chunk.writeUnsignedShort(3); // WAVE_FORMAT_IEEE_FLOAT
fmt_chunk.writeUnsignedShort(format.getChannels());
fmt_chunk.writeUnsignedInt((int) format.getSampleRate());
fmt_chunk.writeUnsignedInt(((int) format.getFrameRate())
* format.getFrameSize());
fmt_chunk.writeUnsignedShort(format.getFrameSize());
fmt_chunk.writeUnsignedShort(format.getSampleSizeInBits());
fmt_chunk.close();
RIFFWriter data_chunk = writer.writeChunk("data");
byte[] buff = new byte[1024];
int len;
while ((len = stream.read(buff, 0, buff.length)) != -1)
data_chunk.write(buff, 0, len);
data_chunk.close();
}
private static class NoCloseOutputStream extends OutputStream {
OutputStream out;
public NoCloseOutputStream(OutputStream out) {
this.out = out;
}
public void write(int b) throws IOException {
out.write(b);
}
public void flush() throws IOException {
out.flush();
}
public void write(byte[] b, int off, int len) throws IOException {
out.write(b, off, len);
}
public void write(byte[] b) throws IOException {
out.write(b);
}
}
private AudioInputStream toLittleEndian(AudioInputStream ais) {
AudioFormat format = ais.getFormat();
AudioFormat targetFormat = new AudioFormat(format.getEncoding(), format
.getSampleRate(), format.getSampleSizeInBits(), format
.getChannels(), format.getFrameSize(), format.getFrameRate(),
false);
return AudioSystem.getAudioInputStream(targetFormat, ais);
}
public int write(AudioInputStream stream, Type fileType, OutputStream out)
throws IOException {
checkFormat(fileType, stream);
if (stream.getFormat().isBigEndian())
stream = toLittleEndian(stream);
RIFFWriter writer = new RIFFWriter(new NoCloseOutputStream(out), "WAVE");
write(stream, writer);
int fpointer = (int) writer.getFilePointer();
writer.close();
return fpointer;
}
public int write(AudioInputStream stream, Type fileType, File out)
throws IOException {
checkFormat(fileType, stream);
if (stream.getFormat().isBigEndian())
stream = toLittleEndian(stream);
RIFFWriter writer = new RIFFWriter(out, "WAVE");
write(stream, writer);
int fpointer = (int) writer.getFilePointer();
writer.close();
return fpointer;
}
}