/**
* Copyright 2013 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package jogamp.newt.driver.opengl;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URLConnection;
import java.nio.ByteBuffer;
import com.jogamp.nativewindow.util.PixelFormat;
import com.jogamp.common.nio.Buffers;
import com.jogamp.common.os.Platform;
import com.jogamp.common.util.IOUtil;
import com.jogamp.opengl.util.PNGPixelRect;
public class JoglUtilPNGIcon {
public static ByteBuffer arrayToX11BGRAImages(final IOUtil.ClassResources resources, final int[] data_size, final int[] elem_bytesize) throws UnsupportedOperationException, InterruptedException, IOException, MalformedURLException {
final PNGPixelRect[] images = new PNGPixelRect[resources.resourceCount()];
data_size[0] = 0;
for(int i=0; i<resources.resourceCount(); i++) {
final URLConnection urlConn = resources.resolve(i);
if( null != urlConn ) {
final PNGPixelRect image = PNGPixelRect.read(urlConn.getInputStream(), PixelFormat.BGRA8888, false /* directBuffer */, 0 /* destMinStrideInBytes */, false /* destIsGLOriented */);
data_size[0] += 2 + image.getSize().getWidth() * image.getSize().getHeight();
images[i] = image;
} else {
images[i] = null;
}
}
if( 0 == data_size[0] ) {
// no image, abort
return null;
}
final boolean is64Bit = Platform.is64Bit();
elem_bytesize[0] = is64Bit ? Buffers.SIZEOF_LONG : Buffers.SIZEOF_INT;
final ByteBuffer buffer = Buffers.newDirectByteBuffer( data_size[0] * elem_bytesize[0] );
for(int i=0; i<images.length; i++) {
final PNGPixelRect image1 = images[i];
if( null != image1 ) {
final int width = image1.getSize().getWidth();
final int height = image1.getSize().getHeight();
if( is64Bit ) {
buffer.putLong(width);
buffer.putLong(height);
} else {
buffer.putInt(width);
buffer.putInt(height);
}
final ByteBuffer bb = image1.getPixels();
final int stride = image1.getStride();
for(int y=0; y<height; y++) {
int bbOff = y * stride;
for(int x=0; x<width; x++) {
long pixel;
pixel = ( 0xffL & bb.get(bbOff++) ); // B
pixel |= ( 0xffL & bb.get(bbOff++) ) << 8; // G
pixel |= ( 0xffL & bb.get(bbOff++) ) << 16; // R
pixel |= ( 0xffL & bb.get(bbOff++) ) << 24; // A
if( is64Bit ) {
buffer.putLong(pixel);
} else {
buffer.putInt((int)pixel);
}
}
}
}
}
buffer.rewind();
return buffer;
}
}