@Override
public void parseFromRaw(ChunkRaw c) {
if (imgInfo.greyscale) {
gray = PngHelperInternal.readInt2fromBytes(c.data, 0);
} else if (imgInfo.indexed) {
int nentries = c.data.length;
paletteAlpha = new int[nentries];
for (int n = 0; n < nentries; n++) {
paletteAlpha[n] = (int) (c.data[n] & 0xff);
}
} else {
red = PngHelperInternal.readInt2fromBytes(c.data, 0);
green = PngHelperInternal.readInt2fromBytes(c.data, 2);
blue = PngHelperInternal.readInt2fromBytes(c.data, 4);
}
}
@Override
public ChunkRaw createRawChunk() {
ChunkRaw c = null;
if (imgInfo.greyscale) {
c = createEmptyChunk(2, true);
PngHelperInternal.writeInt2tobytes(gray, c.data, 0);
} else if (imgInfo.indexed) {
c = createEmptyChunk(paletteAlpha.length, true);
for (int n = 0; n < c.len; n++) {
c.data[n] = (byte) paletteAlpha[n];
}
} else {
c = createEmptyChunk(6, true);
PngHelperInternal.writeInt2tobytes(red, c.data, 0);
PngHelperInternal.writeInt2tobytes(green, c.data, 0);
PngHelperInternal.writeInt2tobytes(blue, c.data, 0);
}
return c;
}