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jMonkeyEngine is a 3-D game engine for adventurous Java developers
/*
* Copyright (c) 2009-2021 jMonkeyEngine
* All rights reserved.
*
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* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
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*
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* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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package jme3tools.converters;
import com.jme3.texture.Image;
import com.jme3.texture.Image.Format;
import com.jme3.texture.plugins.AWTLoader;
import com.jme3.util.BufferUtils;
import java.awt.Transparency;
import java.awt.color.ColorSpace;
import java.awt.image.*;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.EnumMap;
public class ImageToAwt {
private static final EnumMap params
= new EnumMap(Format.class);
private static class DecodeParams {
final int bpp, am, rm, gm, bm, as, rs, gs, bs, im, is;
public DecodeParams(int bpp, int am, int rm, int gm, int bm, int as, int rs, int gs, int bs, int im, int is) {
this.bpp = bpp;
this.am = am;
this.rm = rm;
this.gm = gm;
this.bm = bm;
this.as = as;
this.rs = rs;
this.gs = gs;
this.bs = bs;
this.im = im;
this.is = is;
}
public DecodeParams(int bpp, int rm, int rs, int im, int is, boolean alpha){
this.bpp = bpp;
if (alpha){
this.am = rm;
this.as = rs;
this.rm = 0;
this.rs = 0;
}else{
this.rm = rm;
this.rs = rs;
this.am = 0;
this.as = 0;
}
this.gm = 0;
this.bm = 0;
this.gs = 0;
this.bs = 0;
this.im = im;
this.is = is;
}
public DecodeParams(int bpp, int rm, int rs, int im, int is){
this(bpp, rm, rs, im, is, false);
}
}
static {
final int mx___ = 0xff000000;
final int m_x__ = 0x00ff0000;
final int m__x_ = 0x0000ff00;
final int m___x = 0x000000ff;
final int sx___ = 24;
final int s_x__ = 16;
final int s__x_ = 8;
final int s___x = 0;
final int mxxxx = 0xffffffff;
final int sxxxx = 0;
final int m4x___ = 0xf000;
final int m4_x__ = 0x0f00;
final int m4__x_ = 0x00f0;
final int m4___x = 0x000f;
final int s4x___ = 12;
final int s4_x__ = 8;
final int s4__x_ = 4;
final int s4___x = 0;
final int m5___ = 0xf800;
final int m_5__ = 0x07c0;
final int m__5_ = 0x003e;
final int m___1 = 0x0001;
final int s5___ = 11;
final int s_5__ = 6;
final int s__5_ = 1;
final int s___1 = 0;
final int m5__ = 0xf800;
final int m_6_ = 0x07e0;
final int m__5 = 0x001f;
final int s5__ = 11;
final int s_6_ = 5;
final int s__5 = 0;
final int mxx__ = 0xffff0000;
final int sxx__ = 32;
final int m__xx = 0x0000ffff;
final int s__xx = 0;
// Note: compressed, depth, and floating-point formats are not included here.
params.put(Format.ABGR8, new DecodeParams(4, mx___, m___x, m__x_, m_x__,
sx___, s___x, s__x_, s_x__,
mxxxx, sxxxx));
params.put(Format.Alpha8, new DecodeParams(1, mxxxx, sxxxx, mxxxx, sxxxx, true));
params.put(Format.BGR8, new DecodeParams(3, 0, m___x, m__x_, m_x__,
0, s___x, s__x_, s_x__,
mxxxx, sxxxx));
params.put(Format.Luminance8, new DecodeParams(1, mxxxx, sxxxx, mxxxx, sxxxx, false));
params.put(Format.Luminance16F, new DecodeParams(2, mxxxx, sxxxx, mxxxx, sxxxx, false));
params.put(Format.Luminance16FAlpha16F, new DecodeParams(4, m__xx, mxx__, 0, 0,
s__xx, sxx__, 0, 0,
mxxxx, sxxxx));
params.put(Format.Luminance32F, new DecodeParams(4, mxxxx, sxxxx, mxxxx, sxxxx, false));
params.put(Format.Luminance8, new DecodeParams(1, mxxxx, sxxxx, mxxxx, sxxxx, false));
params.put(Format.RGB5A1, new DecodeParams(2, m___1, m5___, m_5__, m__5_,
s___1, s5___, s_5__, s__5_,
mxxxx, sxxxx));
params.put(Format.RGB565, new DecodeParams(2, 0, m5__ , m_6_ , m__5,
0, s5__ , s_6_ , s__5,
mxxxx, sxxxx));
params.put(Format.RGB8, new DecodeParams(3, 0, m_x__, m__x_, m___x,
0, s_x__, s__x_, s___x,
mxxxx, sxxxx));
params.put(Format.RGBA8, new DecodeParams(4, m___x, mx___, m_x__, m__x_,
s___x, sx___, s_x__, s__x_,
mxxxx, sxxxx));
params.put(Format.BGRA8, new DecodeParams(4, m___x, m__x_, m_x__, mx___,
s___x, s__x_, s_x__, sx___,
mxxxx, sxxxx));
params.put(Format.ARGB8, new DecodeParams(4, mx___, m_x__, m__x_, m___x,
sx___, s_x__, s__x_, s___x,
mxxxx, sxxxx));
}
/**
* A private constructor to inhibit instantiation of this class.
*/
private ImageToAwt() {
}
private static int Ix(int x, int y, int w){
return y * w + x;
}
private static int readPixel(ByteBuffer buf, int idx, int bpp){
buf.position(idx);
int original = buf.get() & 0xff;
while ((--bpp) > 0){
original = (original << 8) | (buf.get() & 0xff);
}
return original;
}
private static void writePixel(ByteBuffer buf, int idx, int pixel, int bpp){
buf.position(idx);
while ((--bpp) >= 0){
// pixel = pixel >> 8;
byte bt = (byte) ((pixel >> (bpp * 8)) & 0xff);
// buf.put( (byte) (pixel & 0xff) );
buf.put(bt);
}
}
/**
* Convert an AWT image to jME image. XXX not implemented yet!
*
* @param image the input image (not null, unaffected)
* @param format the data format
* @param buf the output buffer (not null, modified)
*/
public static void convert(BufferedImage image, Format format, ByteBuffer buf) {
DecodeParams p = params.get(format);
if (p == null)
throw new UnsupportedOperationException("Image format " + format + " is not supported");
int width = image.getWidth();
int height = image.getHeight();
boolean alpha = true;
boolean luminance = false;
int reductionA = 8 - Integer.bitCount(p.am);
int reductionR = 8 - Integer.bitCount(p.rm);
int reductionG = 8 - Integer.bitCount(p.gm);
int reductionB = 8 - Integer.bitCount(p.bm);
int initialPos = buf.position();
for (int y = 0; y < height; y++){
for (int x = 0; x < width; x++){
// Get ARGB
int argb = image.getRGB(x, y);
// Extract color components
int a = (argb & 0xff000000) >> 24;
int r = (argb & 0x00ff0000) >> 16;
int g = (argb & 0x0000ff00) >> 8;
int b = (argb & 0x000000ff);
// Remove anything after 8 bits
a = a & 0xff;
r = r & 0xff;
g = g & 0xff;
b = b & 0xff;
// Set full alpha if target image has no alpha
if (!alpha)
a = 0xff;
// Convert color to luminance if target
// image is in luminance format
if (luminance){
// convert RGB to luminance
}
// Do bit reduction, assumes proper rounding has already been
// done.
a = a >> reductionA;
r = r >> reductionR;
g = g >> reductionG;
b = b >> reductionB;
// Put components into appropriate positions
a = (a << p.as) & p.am;
r = (r << p.rs) & p.rm;
g = (g << p.gs) & p.gm;
b = (b << p.bs) & p.bm;
int outputPixel = ((a | r | g | b) << p.is) & p.im;
int i = initialPos + (Ix(x,y,width) * p.bpp);
writePixel(buf, i, outputPixel, p.bpp);
}
}
}
private static final double LOG2 = Math.log(2);
public static void createData(Image image, boolean mipmaps){
int bpp = image.getFormat().getBitsPerPixel();
int w = image.getWidth();
int h = image.getHeight();
if (!mipmaps){
image.setData(BufferUtils.createByteBuffer(w*h*bpp/8));
return;
}
int expectedMipmaps = 1 + (int) Math.ceil(Math.log(Math.max(h, w)) / LOG2);
int[] mipMapSizes = new int[expectedMipmaps];
int total = 0;
for (int i = 0; i < mipMapSizes.length; i++){
int size = (w * h * bpp) / 8;
total += size;
mipMapSizes[i] = size;
w /= 2;
h /= 2;
}
image.setMipMapSizes(mipMapSizes);
image.setData(BufferUtils.createByteBuffer(total));
}
/**
* Convert the image from the given format to the output format.
* It is assumed that both images have buffers with the appropriate
* number of elements and that both have the same dimensions.
*
* @param input the input image (not null, unaffected)
* @param output the output image (not null, modified)
*/
public static void convert(Image input, Image output){
DecodeParams inParams = params.get(input.getFormat());
DecodeParams outParams = params.get(output.getFormat());
if (inParams == null || outParams == null)
throw new UnsupportedOperationException();
int width = input.getWidth();
int height = input.getHeight();
if (width != output.getWidth() || height != output.getHeight())
throw new IllegalArgumentException();
ByteBuffer inData = input.getData(0);
boolean inAlpha = false;
boolean inLum = false;
boolean inRGB = false;
if (inParams.am != 0) {
inAlpha = true;
}
if (inParams.rm != 0 && inParams.gm == 0 && inParams.bm == 0) {
inLum = true;
} else if (inParams.rm != 0 && inParams.gm != 0 && inParams.bm != 0) {
inRGB = true;
}
int expansionA = 8 - Integer.bitCount(inParams.am);
int expansionR = 8 - Integer.bitCount(inParams.rm);
int expansionG = 8 - Integer.bitCount(inParams.gm);
int expansionB = 8 - Integer.bitCount(inParams.bm);
int inputPixel;
for (int y = 0; y < height; y++){
for (int x = 0; x < width; x++){
int i = Ix(x, y, width) * inParams.bpp;
inputPixel = (readPixel(inData, i, inParams.bpp) & inParams.im) >> inParams.is;
int a = (inputPixel & inParams.am) >> inParams.as;
int r = (inputPixel & inParams.rm) >> inParams.rs;
int g = (inputPixel & inParams.gm) >> inParams.gs;
int b = (inputPixel & inParams.bm) >> inParams.bs;
r = r & 0xff;
g = g & 0xff;
b = b & 0xff;
a = a & 0xff;
a = a << expansionA;
r = r << expansionR;
g = g << expansionG;
b = b << expansionB;
if (inLum)
b = g = r;
if (!inAlpha)
a = 0xff;
// int argb = (a << 24) | (r << 16) | (g << 8) | b;
// out.setRGB(x, y, argb);
}
}
}
public static BufferedImage convert(Image image, boolean do16bit, boolean fullAlpha, int mipLevel){
Format format = image.getFormat();
DecodeParams p = params.get(image.getFormat());
if (p == null)
throw new UnsupportedOperationException();
int width = image.getWidth();
int height = image.getHeight();
int level = mipLevel;
while (--level >= 0){
width /= 2;
height /= 2;
}
ByteBuffer buf = image.getData(0);
buf.order(ByteOrder.LITTLE_ENDIAN);
BufferedImage out;
boolean alpha = false;
boolean luminance = false;
boolean rgb = false;
if (p.am != 0)
alpha = true;
if (p.rm != 0 && p.gm == 0 && p.bm == 0)
luminance = true;
else if (p.rm != 0 && p.gm != 0 && p.bm != 0)
rgb = true;
// alpha OR luminance but not both
if ( (alpha && !rgb && !luminance) || (luminance && !alpha && !rgb) ){
out = new BufferedImage(width, height, BufferedImage.TYPE_BYTE_GRAY);
}else if ( (rgb && alpha) || (luminance && alpha) ){
if (do16bit){
if (fullAlpha){
ColorModel model = AWTLoader.AWT_RGBA4444;
WritableRaster raster = model.createCompatibleWritableRaster(width, width);
out = new BufferedImage(model, raster, false, null);
}else{
// RGB5_A1
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
int[] nBits = {5, 5, 5, 1};
int[] bOffs = {0, 1, 2, 3};
ColorModel colorModel = new ComponentColorModel(cs, nBits, true, false,
Transparency.BITMASK,
DataBuffer.TYPE_BYTE);
WritableRaster raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
width, height,
width*2, 2,
bOffs, null);
out = new BufferedImage(colorModel, raster, false, null);
}
}else{
out = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
}
}else{
if (do16bit){
out = new BufferedImage(width, height, BufferedImage.TYPE_USHORT_565_RGB);
}else{
out = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
}
}
int expansionA = 8 - Integer.bitCount(p.am);
int expansionR = 8 - Integer.bitCount(p.rm);
int expansionG = 8 - Integer.bitCount(p.gm);
int expansionB = 8 - Integer.bitCount(p.bm);
if (expansionR < 0){
expansionR = 0;
}
int mipPos = 0;
for (int i = 0; i < mipLevel; i++){
mipPos += image.getMipMapSizes()[i];
}
int inputPixel;
for (int y = 0; y < height; y++){
for (int x = 0; x < width; x++){
int i = mipPos + (Ix(x,y,width) * p.bpp);
inputPixel = (readPixel(buf,i,p.bpp) & p.im) >> p.is;
int a = (inputPixel & p.am) >> p.as;
int r = (inputPixel & p.rm) >> p.rs;
int g = (inputPixel & p.gm) >> p.gs;
int b = (inputPixel & p.bm) >> p.bs;
r = r & 0xff;
g = g & 0xff;
b = b & 0xff;
a = a & 0xff;
a = a << expansionA;
r = r << expansionR;
g = g << expansionG;
b = b << expansionB;
if (luminance)
b = g = r;
if (!alpha)
a = 0xff;
int argb = (a << 24) | (r << 16) | (g << 8) | b;
out.setRGB(x, y, argb);
}
}
return out;
}
}
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