private void readPalette() {
RandomAccessFile rIn = null;
ByteBuffer buf = null;
int i;
try {
if (paletteFile != null) {
// see if the file exists, if not, set it to the default palette.
File file = new File(paletteFile);
numPaletteEntries = (int) (file.length() / 4);
buf = ByteBuffer.allocate(numPaletteEntries * 4);
rIn = new RandomAccessFile(paletteFile, "r");
FileChannel inChannel = rIn.getChannel();
inChannel.position(0);
inChannel.read(buf);
// Check the byte order.
buf.order(ByteOrder.LITTLE_ENDIAN);
buf.rewind();
IntBuffer ib = buf.asIntBuffer();
paletteData = new int[numPaletteEntries];
ib.get(paletteData);
ib = null;
}
} catch (Exception e) {
System.err.println("Caught exception: " + e.toString());
System.err.println(e.getStackTrace());
} finally {
if (rIn != null) {
try {
rIn.close();
} catch (Exception e) {
}
}
}
}
/**
* Reads an image from an archived file and return it as ByteBuffer object.
*
* @author Mike Butler, Kiet Le
*/
private ByteBuffer readImage(String filename, Dimension dim) {
if (dim == null) dim = new Dimension(0, 0);
ByteBuffer bytes = null;
try {
DataInputStream dis =
new DataInputStream(getClass().getClassLoader().getResourceAsStream(filename));
dim.width = dis.readInt();
dim.height = dis.readInt();
System.out.println("Creating buffer, width: " + dim.width + " height: " + dim.height);
// byte[] buf = new byte[3 * dim.height * dim.width];
bytes = BufferUtil.newByteBuffer(3 * dim.width * dim.height);
for (int i = 0; i < bytes.capacity(); i++) {
bytes.put(dis.readByte());
}
dis.close();
} catch (Exception e) {
e.printStackTrace();
}
bytes.rewind();
return bytes;
}