public void unprepare(
int X, int Y, final WaveFormat waveFormat, final ByteBuffer output, final Crc32 crc) {
// decompress and convert from (x,y) -> (l,r)
// sort of long and ugly.... sorry
int channels = waveFormat.nChannels;
int bitsPerSample = waveFormat.wBitsPerSample;
if (channels == 2) {
if (bitsPerSample == 16) {
// get the right and left values
short nR = (short) (X - (Y / 2));
short nL = (short) (nR + Y);
output.append(nR, nL);
crc.append(nR, nL);
} else if (bitsPerSample == 8) {
byte R = (byte) (X - (Y / 2) + 128);
byte L = (byte) (R + Y);
output.append(R, L);
crc.append(R, L);
} else if (bitsPerSample == 24) {
int RV = X - (Y / 2);
int LV = RV + Y;
if (RV < 0) RV = (RV + 0x800000) | 0x800000;
if (LV < 0) LV = (LV + 0x800000) | 0x800000;
output.append24(RV, LV);
crc.append24(RV, LV);
}
} else if (channels == 1) {
if (bitsPerSample == 16) {
output.append((short) X);
crc.append((short) X);
} else if (bitsPerSample == 8) {
byte R = (byte) (X + 128);
output.append(R);
crc.append(R);
} else if (bitsPerSample == 24) {
if (X < 0) X = (X + 0x800000) | 0x800000;
output.append24(X);
crc.append24(X);
}
}
}
public void unprepareOld(
int[] pInputX,
int[] pInputY,
int nBlocks,
WaveFormat pWaveFormatEx,
ByteBuffer output,
Crc32 crc,
int nFileVersion) {
// the CRC that will be figured during decompression
crc.init();
// decompress and convert from (x,y) -> (l,r)
// sort of int and ugly.... sorry
int channels = pWaveFormatEx.nChannels;
int bitsPerSample = pWaveFormatEx.wBitsPerSample;
if (channels == 2) {
// convert the x,y data to raw data
if (bitsPerSample == 16) {
short R;
int pX = 0;
int pY = 0;
for (; pX < nBlocks; pX++, pY++) {
R = (short) (pInputX[pX] - (pInputY[pY] / 2));
output.append(R);
crc.append(R);
R += pInputY[pY];
output.append(R);
crc.append(R);
}
} else if (bitsPerSample == 8) {
byte R;
if (nFileVersion > 3830) {
for (int SampleIndex = 0; SampleIndex < nBlocks; SampleIndex++) {
R = (byte) (pInputX[SampleIndex] - (pInputY[SampleIndex] / 2) + 128);
output.append(R);
crc.append(R);
R += pInputY[SampleIndex];
output.append(R);
crc.append(R);
}
} else {
for (int SampleIndex = 0; SampleIndex < nBlocks; SampleIndex++) {
R = (byte) (pInputX[SampleIndex] - (pInputY[SampleIndex] / 2));
output.append(R);
crc.append(R);
R += pInputY[SampleIndex];
output.append(R);
crc.append(R);
}
}
} else if (bitsPerSample == 24) {
int RV, LV;
for (int SampleIndex = 0; SampleIndex < nBlocks; SampleIndex++) {
RV = pInputX[SampleIndex] - (pInputY[SampleIndex] / 2);
LV = RV + pInputY[SampleIndex];
int nTemp = 0;
if (RV < 0) nTemp = (RV + 0x800000) | 0x800000;
else nTemp = RV;
output.append24(nTemp);
crc.append24(nTemp);
nTemp = 0;
if (LV < 0) nTemp = (LV + 0x800000) | 0x800000;
else nTemp = LV;
output.append24(nTemp);
crc.append24(nTemp);
}
}
} else if (channels == 1) {
// convert to raw data
if (bitsPerSample == 8) {
byte R;
if (nFileVersion > 3830) {
for (int SampleIndex = 0; SampleIndex < nBlocks; SampleIndex++) {
R = (byte) (pInputX[SampleIndex] + 128);
output.append(R);
crc.append(R);
}
} else {
for (int SampleIndex = 0; SampleIndex < nBlocks; SampleIndex++) {
R = (byte) (pInputX[SampleIndex]);
output.append(R);
crc.append(R);
}
}
} else if (bitsPerSample == 24) {
int RV;
for (int SampleIndex = 0; SampleIndex < nBlocks; SampleIndex++) {
RV = pInputX[SampleIndex];
int nTemp = 0;
if (RV < 0) nTemp = (RV + 0x800000) | 0x800000;
else nTemp = RV;
output.append24(nTemp);
crc.append24(nTemp);
}
} else {
short R;
for (int SampleIndex = 0; SampleIndex < nBlocks; SampleIndex++) {
R = (short) (pInputX[SampleIndex]);
output.append(R);
crc.append(R);
}
}
}
crc.prefinalizeCrc();
}