/**
* @param ddsImage
* @param mipNumber
* @param imageName
*/
public DDSDecompressor(DDSImage ddsImage, int mipNumber, String imageName) {
this.imageName = imageName;
this.ddsImage = ddsImage;
this.mipNumber = mipNumber;
this.imageInfo = ddsImage.getAllMipMaps()[mipNumber];
this.width = imageInfo.getWidth();
this.height = imageInfo.getHeight();
this.buffer = imageInfo.getData();
}
/** @return a new non-cached {@code BufferedImage} */
public BufferedImage convertImage() {
// can't use width or height as it's been corrected to 1 already
if (imageInfo.getWidth() < 1 || imageInfo.getHeight() < 1) {
return new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
}
// prep the buffer
buffer.rewind();
buffer.order(ByteOrder.LITTLE_ENDIAN);
if (ddsImage.getPixelFormat() == DDSImage.D3DFMT_DXT1) {
// System.out.println("DXT1");
if (!ddsImage.isPixelFormatFlagSet(DDSImage.DDPF_ALPHAPIXELS)) {
// TODO: how do I discover no alpha flag?
// C:\game media\Black Prophecy\Textures\avatar_ai_pilot_f3_05.dds wants no alpha flag
// possibly no mips maps indicates this?
return decodeDxt1Buffer();
} else {
System.out.println("Alpha present in DXT1!; mip num = " + mipNumber);
// return decompressRGBA_S3TC_DXT1_EXT(ddsImage.getMipMap(mipNumber));
}
} else if (ddsImage.getPixelFormat() == DDSImage.D3DFMT_DXT3) {
return decodeDxt3Buffer();
} else if (ddsImage.getPixelFormat() == DDSImage.D3DFMT_DXT5) {
return decompressRGBA_S3TC_DXT5_EXT();
} else if (ddsImage.getPixelFormat() == DDSImage.D3DFMT_ATI2) {
// NOT correct but it gives you the idea a bit
return decompressRGBA_S3TC_DXT5_EXT();
} else if (ddsImage.getPixelFormat() == DDSImage.D3DFMT_R8G8B8) {
return decodeR8G8B8();
} else if (ddsImage.getPixelFormat() == DDSImage.D3DFMT_A8R8G8B8) {
return decodeA8R8G8B8();
} else if (ddsImage.getPixelFormat() == DDSImage.D3DFMT_X8R8G8B8) {
return decodeA8R8G8B8();
} else if (ddsImage.getPixelFormat() == DDSImage.DDS_A16B16G16R16F) {
return decodeA16R16G16B16();
}
System.err.println("BAD DXT format!! " + ddsImage.getPixelFormat());
return null;
}