📄 bitmap.java
字号:
x = 0;
height--;
previous = line;
prevY = previous / width;
line = height * width;
}
switch (opcode) {
case 0: /* Fill */
if (insertmix) {
if (previous == -1) {
// pixel[line+x] = mix;
w.setRGB(left+x,top+height,mix);
} else {
w.setRGB(left+x,top+height,w.getRGB(left+x,top+prevY) ^ mix);
// pixel[line+x] = (pixel[previous+x] ^ mix);
}
insertmix = false;
count--;
x++;
}
if (previous == -1) {
while (((count & ~0x7) != 0) && ((x + 8) < width)) {
for (int i = 0; i < 8; i++) {
// pixel[line+x] = 0;
w.setRGB(left+x,top+height,0);
count--;
x++;
}
}
while ((count > 0) && (x < width)) {
// pixel[line+x] = 0;
w.setRGB(left+x,top+height,0);
count--;
x++;
}
} else {
while (((count & ~0x7) != 0) && ((x + 8) < width)) {
for (int i = 0; i < 8; i++) {
// pixel[line + x] = pixel[previous + x];
w.setRGB(left+x,top+height, w.getRGB(left+x,top+prevY));
count--;
x++;
}
}
while ((count > 0) && (x < width)) {
// pixel[line + x] = pixel[previous + x];
w.setRGB(left+x,top+height, w.getRGB(left+x,top+prevY));
count--;
x++;
}
}
break;
case 1: /* Mix */
if (previous == -1) {
while (((count & ~0x7) != 0) && ((x + 8) < width)) {
for (int i = 0; i < 8; i++) {
// pixel[line + x] = mix;
w.setRGB(left+x,top+height,mix);
count--;
x++;
}
}
while ((count > 0) && (x < width)) {
// pixel[line + x] = mix;
w.setRGB(left+x,top+height,mix);
count--;
x++;
}
} else {
while (((count & ~0x7) != 0) && ((x + 8) < width)) {
for (int i = 0; i < 8; i++) {
// pixel[line + x] = pixel[previous + x] ^ mix;
w.setRGB(left+x,top+height, w.getRGB(left+x,top+prevY) ^ mix);
count--;
x++;
}
}
while ((count > 0) && (x < width)) {
// pixel[line + x] = pixel[previous + x] ^ mix;
w.setRGB(left+x,top+height, w.getRGB(left+x,top+prevY) ^ mix);
count--;
x++;
}
}
break;
case 2: /* Fill or Mix */
if (previous == -1) {
while (((count & ~0x7) != 0) && ((x + 8) < width)) {
for (int i = 0; i < 8; i++) {
mixmask <<= 1;
if (mixmask == 0) {
mask = (fom_mask != 0) ? (byte) fom_mask
: compressed_pixel[input++];
mixmask = 1;
}
if ((mask & mixmask) != 0){
// pixel[line + x] = (byte) mix;
w.setRGB(left+x,top+height,(byte) mix);
}
else{
//pixel[line + x] = 0;
w.setRGB(left+x,top+height,0);
}
count--;
x++;
}
}
while ((count > 0) && (x < width)) {
mixmask <<= 1;
if (mixmask == 0) {
mask = (fom_mask != 0) ? (byte) fom_mask
: compressed_pixel[input++];
mixmask = 1;
}
if ((mask & mixmask) != 0){
//pixel[line + x] = mix;
w.setRGB(left+x,top+height,mix);
}
else{
//pixel[line + x] = 0;
w.setRGB(left+x,top+height,0);
}
count--;
x++;
}
} else {
while (((count & ~0x7) != 0) && ((x + 8) < width)) {
for (int i = 0; i < 8; i++) {
mixmask <<= 1;
if (mixmask == 0) {
mask = (fom_mask != 0) ? (byte) fom_mask
: compressed_pixel[input++];
mixmask = 1;
}
if ((mask & mixmask) != 0){
//pixel[line + x] = (pixel[previous + x] ^ mix);
w.setRGB(left+x,top+height,w.getRGB(left+x,prevY+top) ^ mix);
} else{
//pixel[line + x] = pixel[previous + x];
w.setRGB(left+x,top+height,w.getRGB(left+x,prevY+top));
}
count--;
x++;
}
}
while ((count > 0) && (x < width)) {
mixmask <<= 1;
if (mixmask == 0) {
mask = (fom_mask != 0) ? (byte) fom_mask
: compressed_pixel[input++];
mixmask = 1;
}
if ((mask & mixmask) != 0){
// pixel[line + x] = (pixel[previous + x] ^ mix);
w.setRGB(left+x,top+height,w.getRGB(left+x,prevY+top) ^ mix);
} else {
// pixel[line + x] = pixel[previous + x];
w.setRGB(left+x,top+height,w.getRGB(left+x,prevY+top));
}
count--;
x++;
}
}
break;
case 3: /* Color */
while (((count & ~0x7) != 0) && ((x + 8) < width)) {
for (int i = 0; i < 8; i++) {
// pixel[line + x] = color2;
w.setRGB(left+x,top+height,color2);
count--;
x++;
}
}
while ((count > 0) && (x < width)) {
// pixel[line + x] = color2;
w.setRGB(left+x,top+height,color2);
count--;
x++;
}
break;
case 4: /* Copy */
while (((count & ~0x7) != 0) && ((x + 8) < width)) {
for (int i = 0; i < 8; i++) {
// pixel[line + x] = cvalx(compressed_pixel, input, Bpp);
w.setRGB(left+x,top+height,cvalx(compressed_pixel, input, Bpp));
input += Bpp;
count--;
x++;
}
}
while ((count > 0) && (x < width)) {
// pixel[line + x] = cvalx(compressed_pixel, input, Bpp);
w.setRGB(left+x,top+height,cvalx(compressed_pixel, input, Bpp));
input += Bpp;
count--;
x++;
}
break;
case 8: /* Bicolor */
while (((count & ~0x7) != 0) && ((x + 8) < width)) {
for (int i = 0; i < 8; i++) {
if (bicolor) {
// pixel[line + x] = color2;
w.setRGB(left+x,top+height,color2);
bicolor = false;
} else {
// pixel[line + x] = color1;
w.setRGB(left+x,top+height,color1);
bicolor = true;
count++;
}
count--;
x++;
}
}
while ((count > 0) && (x < width)) {
if (bicolor) {
// pixel[line + x] = color2;
w.setRGB(left+x,top+height,color2);
bicolor = false;
} else {
// pixel[line + x] = color1;
w.setRGB(left+x,top+height,color1);
bicolor = true;
count++;
}
count--;
x++;
}
break;
case 0xd: /* White */
while (((count & ~0x7) != 0) && ((x + 8) < width)) {
for (int i = 0; i < 8; i++) {
// pixel[line + x] = 0xffffff;
w.setRGB(left+x,top+height,0xffffff);
count--;
x++;
}
}
while ((count > 0) && (x < width)) {
// pixel[line + x] = 0xffffff;
w.setRGB(left+x,top+height,0xffffff);
count--;
x++;
}
break;
case 0xe: /* Black */
while (((count & ~0x7) != 0) && ((x + 8) < width)) {
for (int i = 0; i < 8; i++) {
// pixel[line + x] = 0x00;
w.setRGB(left+x,top+height,0x00);
count--;
x++;
}
}
while ((count > 0) && (x < width)) {
// pixel[line + x] = 0x00;
w.setRGB(left+x,top+height,0x00);
count--;
x++;
}
break;
default:
throw new RdesktopException(
"Unimplemented decompress opcode " + opcode);// ;
}
}
}
/* if(Options.server_bpp == 16){
for(int i = 0; i < pixel.length; i++) pixel[i] = Bitmap.convert16to24(pixel[i]);
}*/
return w;
}
/**
* Decompress bitmap data from packet and output as an Image
* @param width Width of bitmap
* @param height Height of bitmap
* @param size Size of compressed data in bytes
* @param data Packet containing bitmap data
* @param Bpp Bytes per-pixel for bitmap
* @param cm Colour model for bitmap (if using indexed palette)
* @return Decompressed bitmap as Image object
* @throws RdesktopException
*/
public static Image decompressImg(int width, int height, int size, RdpPacket_Localised data, int Bpp, IndexColorModel cm) throws RdesktopException {
WrappedImage w = null;
byte[] compressed_pixel = new byte[size];
data.copyToByteArray(compressed_pixel, 0, data.getPosition(), size);
data.incrementPosition(size);
int previous = -1, line = 0, prevY = 0;
int input = 0, end = size;
int opcode = 0, count = 0, offset = 0, x = width;
int lastopcode = -1, fom_mask = 0;
int code = 0, color1 = 0, color2 = 0;
byte mixmask = 0;
int mask = 0;
int mix = 0xffffffff;
boolean insertmix = false, bicolor = false, isfillormix = false;
if(cm == null)
w = new WrappedImage(width, height, BufferedImage.TYPE_INT_RGB);
else
w = new WrappedImage(width, height, BufferedImage.TYPE_INT_RGB, cm);
while (input < end) {
fom_mask = 0;
code = (compressed_pixel[input++] & 0x000000ff);
opcode = code >> 4;
/* Handle different opcode forms */
switch (opcode) {
case 0xc:
case 0xd:
case 0xe:
opcode -= 6;
count = code & 0xf;
offset = 16;
break;
case 0xf:
opcode = code & 0xf;
if (opcode < 9) {
count = (compressed_pixel[input++] & 0xff);
count |= ((compressed_pixel[input++] & 0xff) << 8);
} else {
count = (opcode < 0xb) ? 8 : 1;
}
offset = 0;
break;
default:
opcode >>= 1;
count = code & 0x1f;
offset = 32;
break;
}
/* Handle strange cases for counts */
if (offset != 0) {
isfillormix = ((opcode == 2) || (opcode == 7));
if (count == 0) {
if (isfillormix)
count = (compressed_pixel[input++] & 0x000000ff) + 1;
else
count = (compressed_pixel[input++] & 0x000000ff)
+ offset;
} else if (isfillormix) {
count <<= 3;
}
}
switch (opcode) {
case 0: /* Fill */
if ((lastopcode == opcode)
&& !((x == width) && (previous == -1)))
insertmix = true;
break;
case 8: /* Bicolor */
color1 = cvalx(compressed_pixel, input, Bpp);
//(compressed_pixel[input++]&0x000000ff);
input += Bpp;
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