/*
* Copyright (C) 2010-2016 JPEXS, All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3.0 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library.
*/
package com.jpexs.decompiler.flash.types.sound;
import com.jpexs.decompiler.flash.SWFInputStream;
import java.io.IOException;
import java.io.OutputStream;
import lt.dkd.nellymoser.CodecImpl;
/**
*
* @author JPEXS
*/
public class NellyMoserDecoder extends SoundDecoder {
public static final int NELLY_BLOCK_LEN = 64;
public static final int NELLY_BUF_LEN = 128;
public static final int NELLY_SAMPLES = 2 * NELLY_BUF_LEN;
public NellyMoserDecoder(SoundFormat soundFormat) {
super(soundFormat);
}
@Override
public void decode(SWFInputStream sis, OutputStream os) throws IOException {
soundFormat.stereo = false;
float[] audioD = new float[NELLY_SAMPLES];
final float[] state = new float[64];
int blockCount = sis.available() / NELLY_BLOCK_LEN;
for (int j = 0; j < blockCount; j++) {
byte[] block = sis.readBytesEx(NELLY_BLOCK_LEN, "block");
CodecImpl.decode(state, block, audioD);
short[] audio = new short[NELLY_SAMPLES];
for (int i = 0; i < audioD.length; i++) {
audio[i] = (short) (audioD[i]);
}
byte[] d = new byte[audio.length * 2];
for (int i = 0; i < audio.length; i++) {
int s = audio[i];
d[i * 2] = (byte) (s & 0xff);
d[i * 2 + 1] = (byte) ((s >> 8) & 0xff);
}
os.write(d);
}
}
}