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dhewm3/neo/tools/compilers/roqvq/roq.m
Timothee 'TTimo' Besset fb1609f554 hello world
2011-11-22 15:28:15 -06:00

933 lines
21 KiB
Objective-C
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#import "roq.h"
#import "codec.h"
#ifdef __MACOS__
blah
#endif
@implementation roq
- init
{
cWindow = eWindow = sWindow = 0;
image = 0;
quietMode = NO;
encoder = 0;
previousSize = 0;
lastFrame = NO;
codes = malloc( 4*1024 );
dataStuff=NO;
return self;
}
- (void)dealloc
{
free( codes );
if (image) [image dealloc];
if (encoder) [encoder dealloc];
return;
}
- encodeQuietly:(BOOL)which
{
quietMode = which;
return self;
}
- (BOOL)isQuiet
{
return quietMode;
}
- (BOOL)isLastFrame
{
return lastFrame;
}
- (BOOL)scaleable
{
return [paramFileId isScaleable];
}
- (BOOL)paramNoAlpha
{
return [paramFileId noAlpha];
}
- (BOOL)makingVideo
{
return YES; //[paramFileId timecode];
}
- (BOOL)searchType
{
return [paramFileId searchType];
}
- (BOOL)hasSound
{
return [paramFileId hasSound];
}
- (int)previousFrameSize
{
return previousSize;
}
-(int)firstFrameSize
{
return [paramFileId firstFrameSize];
}
-(int)normalFrameSize
{
return [paramFileId normalFrameSize];
}
- (char *)currentFilename
{
return currentFile;
}
-encodeStream: (id)paramInputFile
{
int onFrame;
char f0[MAXPATHLEN], f1[MAXPATHLEN], f2[MAXPATHLEN];
int morestuff;
onFrame = 1;
encoder = [[codec alloc] init: self];
numberOfFrames = [paramInputFile numberOfFrames];
paramFileId = paramInputFile;
if ([paramInputFile noAlpha]==YES) printf("encodeStream: eluding alpha\n");
f0[0] = 0;
strcpy( f1, [paramInputFile getNextImageFilename]);
if (( [paramInputFile moreFrames] == YES )) strcpy( f2, [paramInputFile getNextImageFilename]);
morestuff = numberOfFrames;
while( morestuff ) {
[self loadAndDisplayImage: f1];
if (onFrame==1 && ([image hadAlpha]==NO || [paramInputFile noAlpha]==YES) && ![self makingVideo] && ![self scaleable]) {
[encoder sparseEncode: self];
// [self writeLossless];
} else {
if (!strcmp( f0, f1 ) && strcmp( f1, f2) ) {
[self writeHangFrame];
} else {
[encoder sparseEncode: self];
}
}
onFrame++;
strcpy( f0, f1 );
strcpy( f1, f2 );
if ([paramInputFile moreFrames] == YES) strcpy( f2, [paramInputFile getNextImageFilename]);
morestuff--;
}
if (numberOfFrames != 1) {
if ([image hadAlpha] && [paramInputFile noAlpha]==NO) {
lastFrame = YES;
[encoder sparseEncode: self];
} else {
[self writeLossless];
}
}
return self;
}
- write16Word:(word *)aWord to:(FILE *)stream
{
byte a, b;
a = *aWord & 0xff;
b = *aWord >> 8;
fputc( a, stream );
fputc( b, stream );
return self;
}
- write32Word:( unsigned int *)aWord to:(FILE *)stream
{
byte a, b, c, d;
a = *aWord & 0xff;
b = (*aWord >> 8) & 0xff;
c = (*aWord >> 16) & 0xff;
d = (*aWord >> 24) & 0xff;
fputc( a, stream );
fputc( b, stream );
fputc( c, stream );
fputc( d, stream );
return self;
}
-(int)sizeFile:(FILE *)ftosize;
{
long int fat, fend;
fat = ftell(ftosize);
fseek( ftosize, 0, SEEK_END );
fend = ftell(ftosize);
fseek( ftosize, fat, SEEK_SET);
return (fend);
}
- convertPlanertoPacked
{
byte *iPlane[5], *newdata, *olddata;
int x,y,index, sample, pixelsWide, pixelsHigh;
TByteBitmapImageRep *newImage;
pixelsWide = [image pixelsWide];
pixelsHigh = [image pixelsHigh];
printf("convertPlanertoPacked: converting\n");
newImage = [[TByteBitmapImageRep alloc] initWithBitmapDataPlanes: NULL
pixelsWide: pixelsWide
pixelsHigh: pixelsHigh
bitsPerSample: 8
samplesPerPixel: 4
hasAlpha: YES
isPlanar: NO
colorSpaceName: NSCalibratedRGBColorSpace
bytesPerRow: 0
bitsPerPixel: 0];
newdata = [newImage bitmapData];
index = 0;
if ([image isPlanar]) {
[image getBitmapDataPlanes: iPlane];
for(y=0;y<pixelsHigh;y++) {
for(x=0;x<pixelsWide;x++) {
newdata[index++] = iPlane[0][y*pixelsWide+x];
newdata[index++] = iPlane[1][y*pixelsWide+x];
newdata[index++] = iPlane[2][y*pixelsWide+x];
if ([image hasAlpha]) {
newdata[index++] = iPlane[3][y*pixelsWide+x];
} else {
newdata[index++] = 255;
}
}
}
} else {
sample = 0;
olddata = [image bitmapData];
for(y=0;y<pixelsHigh;y++) {
for(x=0;x<pixelsWide;x++) {
newdata[index++] = olddata[sample++];
newdata[index++] = olddata[sample++];
newdata[index++] = olddata[sample++];
if ([image hasAlpha]) {
newdata[index++] = olddata[sample++];
} else {
newdata[index++] = 255;
}
}
}
}
[image dealloc];
image = newImage;
return self;
}
- writeLossless
{
word direct;
unsigned int j;
char tempFile[MAXPATHLEN];
FILE *ftemp;
byte *buffer;
int res, mess;
[self convertPlanertoPacked];
if (!dataStuff) {
[self initRoQPatterns];
dataStuff=YES;
}
direct = RoQ_QUAD_JPEG;
[self write16Word: &direct to: RoQFile];
sprintf(tempFile, "%s.jpg",[paramFileId roqTempFilename]);
[image writeJFIF:tempFile quality: [paramFileId jpegQuality]];
ftemp = fopen(tempFile, "rb");
if (!ftemp) { fprintf(stderr, "Could not open temp file\n"); exit(1); }
j = [self sizeFile: ftemp];
printf("writeLossless: writing %d bytes to RoQ_QUAD_JPEG\n", j);
[self write32Word: &j to: RoQFile];
direct = 0; // flags
[self write16Word: &direct to: RoQFile];
buffer = malloc( 16384 );
do {
res = fread( buffer, 1, 16384, ftemp);
mess = fwrite( buffer, 1, res, RoQFile );
if (res != mess) { fprintf(stderr, "Could not write to output stream\n"); exit(1); }
} while ( res == 16384 );
free( buffer );
fclose(ftemp);
[encoder setPreviousImage: tempFile from: image parent: self];
remove( tempFile );
fflush( RoQFile );
return self;
}
- initRoQFile:(const char *)RoQFilename
{
word i;
static int finit = 0;
if (!finit) {
finit++;
printf("initRoQFile: %s\n", RoQFilename);
RoQFile = fopen( RoQFilename, "w" );
// chmod(RoQFilename, S_IREAD|S_IWRITE|S_ISUID|S_ISGID|0070|0007 );
if (!RoQFile) {
fprintf(stderr,"Unable to open output file %s.\n", RoQFilename);
exit(1);
}
i = RoQ_ID;
[self write16Word: &i to: RoQFile];
i = 0xffff;
[self write16Word: &i to: RoQFile];
[self write16Word: &i to: RoQFile];
i = 24; // framerate
[self write16Word: &i to: RoQFile];
fflush( RoQFile );
}
strcpy( roqOutfile, RoQFilename );
return self;
}
- initRoQPatterns
{
int j;
word direct;
direct = RoQ_QUAD_INFO;
[self write16Word: &direct to: RoQFile];
j = 8;
[self write32Word: &j to: RoQFile];
printf("initRoQPatterns: outputting %d bytes to RoQ_INFO\n", j);
direct = [image hadAlpha];
if ([self paramNoAlpha] == YES) direct = 0;
[self write16Word: &direct to: RoQFile];
direct = [image pixelsWide];
[self write16Word: &direct to: RoQFile];
direct = [image pixelsHigh];
[self write16Word: &direct to: RoQFile];
direct = 8;
[self write16Word: &direct to: RoQFile];
direct = 4;
[self write16Word: &direct to: RoQFile];
fflush( RoQFile );
return self;
}
- closeRoQFile
{
fflush( RoQFile );
printf("closeRoQFile: closing RoQ file\n");
fclose( RoQFile );
return self;
}
- writeHangFrame
{
int j;
word direct;
printf("*******************************************************************\n");
direct = RoQ_QUAD_HANG;
[self write16Word: &direct to: RoQFile];
j = 0;
[self write32Word: &j to: RoQFile];
direct = 0;
[self write16Word: &direct to: RoQFile];
return self;
}
- writeCodeBookToStream: (byte *)codebook size: (int)csize flags: (word)cflags
{
int j;
word direct;
if (!csize) {
printf("writeCodeBook: NO VQ DATA!!!!\n");
return self;
}
direct = RoQ_QUAD_CODEBOOK;
[self write16Word: &direct to: RoQFile];
j = csize;
[self write32Word: &j to: RoQFile];
printf("writeCodeBook: outputting %d bytes to RoQ_QUAD_CODEBOOK\n", j);
direct = cflags;
[self write16Word: &direct to: RoQFile];
fwrite( codebook, j, 1, RoQFile);
fflush( RoQFile );
return self;
}
- writeCodeBook: (byte *)codebook
{
memcpy( codes, codebook, 4096 );
return self;
}
- writeFrame:(quadcel *)pquad
{
word action, direct;
int onCCC, onAction, i, j, code;
byte *cccList;
BOOL *use2, *use4;
int dx,dy,dxMean,dyMean,index2[256],index4[256], dimension;
cccList = malloc( numQuadCels * 8); // maximum length
use2 = malloc(256*sizeof(BOOL));
use4 = malloc(256*sizeof(BOOL));
for(i=0;i<256;i++) {
use2[i] = NO;
use4[i] = NO;
}
action = 0;
j = onAction = 0;
onCCC = 2; // onAction going to go at zero
dxMean = [encoder motMeanX];
dyMean = [encoder motMeanY];
if ([image hadAlpha]) dimension = 10; else dimension = 6;
for (i=0; i<numQuadCels; i++) {
if ( pquad[i].size && pquad[i].size < 16 ) {
switch( pquad[i].status ) {
case SLD:
use4[pquad[i].patten[0]] = YES;
use2[codes[dimension*256+(pquad[i].patten[0]*4)+0]] = YES;
use2[codes[dimension*256+(pquad[i].patten[0]*4)+1]] = YES;
use2[codes[dimension*256+(pquad[i].patten[0]*4)+2]] = YES;
use2[codes[dimension*256+(pquad[i].patten[0]*4)+3]] = YES;
break;
case PAT:
use4[pquad[i].patten[0]] = YES;
use2[codes[dimension*256+(pquad[i].patten[0]*4)+0]] = YES;
use2[codes[dimension*256+(pquad[i].patten[0]*4)+1]] = YES;
use2[codes[dimension*256+(pquad[i].patten[0]*4)+2]] = YES;
use2[codes[dimension*256+(pquad[i].patten[0]*4)+3]] = YES;
break;
case CCC:
use2[pquad[i].patten[1]] = YES;
use2[pquad[i].patten[2]] = YES;
use2[pquad[i].patten[3]] = YES;
use2[pquad[i].patten[4]] = YES;
}
}
}
if (!dataStuff) {
dataStuff=YES;
[self initRoQPatterns];
if ([image hadAlpha]) i = 3584; else i = 2560;
[self writeCodeBookToStream: codes size: i flags: 0];
for(i=0;i<256;i++) {
index2[i] = i;
index4[i] = i;
}
} else {
j = 0;
for(i=0;i<256;i++) {
if (use2[i]) {
index2[i] = j;
for(dx=0;dx<dimension;dx++) cccList[j*dimension+dx] = codes[i*dimension+dx];
j++;
}
}
code = j*dimension;
direct = j;
printf("writeFrame: really used %d 2x2 cels\n", j);
j = 0;
for(i=0;i<256;i++) {
if (use4[i]) {
index4[i] = j;
for(dx=0;dx<4;dx++) cccList[j*4+code+dx] = index2[codes[i*4+(dimension*256)+dx]];
j++;
}
}
code += j*4;
direct = (direct<<8) + j;
printf("writeFrame: really used %d 4x4 cels\n", j);
if ([image hadAlpha]) i = 3584; else i = 2560;
if ( code == i || j == 256) {
[self writeCodeBookToStream: codes size: i flags: 0];
} else {
[self writeCodeBookToStream: cccList size: code flags: direct];
}
}
action = 0;
j = onAction = 0;
for (i=0; i<numQuadCels; i++) {
if ( pquad[i].size && pquad[i].size < 16 ) {
code = -1;
switch( pquad[i].status ) {
case DEP:
code = 3;
break;
case SLD:
code = 2;
cccList[onCCC++] = index4[pquad[i].patten[0]];
break;
case MOT:
code = 0;
break;
case FCC:
code = 1;
dx = ((pquad[i].domain >> 8 )) - 128 - dxMean + 8;
dy = ((pquad[i].domain & 0xff)) - 128 - dyMean + 8;
if (dx>15 || dx<0 || dy>15 || dy<0 ) {
printf("writeFrame: FCC error %d,%d mean %d,%d at %d,%d,%d rmse %f\n", dx,dy, dxMean, dyMean,pquad[i].xat,pquad[i].yat,pquad[i].size, pquad[i].snr[FCC] );
exit(1);
}
cccList[onCCC++] = (dx<<4)+dy;
break;
case PAT:
code = 2;
cccList[onCCC++] = index4[pquad[i].patten[0]];
break;
case CCC:
code = 3;
cccList[onCCC++] = index2[pquad[i].patten[1]];
cccList[onCCC++] = index2[pquad[i].patten[2]];
cccList[onCCC++] = index2[pquad[i].patten[3]];
cccList[onCCC++] = index2[pquad[i].patten[4]];
break;
case DEAD:
fprintf(stderr,"dead cels in picture\n");
break;
}
if (code == -1) {
fprintf(stderr, "writeFrame: an error occurred writing the frame\n");
exit(2);
}
action = (action<<2)|code;
j++;
if (j == 8) {
j = 0;
cccList[onAction+0] = (action & 0xff);
cccList[onAction+1] = ((action >> 8) & 0xff);
onAction = onCCC;
onCCC += 2;
}
}
}
if (j) {
action <<= ((8-j)*2);
cccList[onAction+0] = (action & 0xff);
cccList[onAction+1] = ((action >> 8) & 0xff);
}
direct = RoQ_QUAD_VQ;
[self write16Word: &direct to: RoQFile];
j = onCCC;
[self write32Word: &j to: RoQFile];
direct = dyMean;
direct &= 0xff;
direct += (dxMean<<8); // flags
[self write16Word: &direct to: RoQFile];
printf("writeFrame: outputting %d bytes to RoQ_QUAD_VQ\n", j);
previousSize = j;
fwrite( cccList, onCCC, 1, RoQFile );
fflush( RoQFile );
free( cccList );
free( use2 );
free( use4 );
return self;
}
- writePuzzleFrame:(quadcel *)pquad
{
return self;
}
- (TByteBitmapImageRep *)scaleImage: (TByteBitmapImageRep *)toscale
{
int newx, newy,x,y,s,linesize;
TByteBitmapImageRep *newImage;
unsigned char *i0, *i1;
int newv;
newx = 288;
if ([toscale pixelsHigh] == 160) {
newy = 320;
} else {
newy = [toscale pixelsHigh];
}
newImage = [[TByteBitmapImageRep alloc] initWithBitmapDataPlanes: NULL
pixelsWide: newx
pixelsHigh: newy
bitsPerSample: 8
samplesPerPixel: 4
hasAlpha: YES
isPlanar: NO
colorSpaceName: NSCalibratedRGBColorSpace
bytesPerRow: 0
bitsPerPixel: 0];
i0 = [toscale bitmapData];
i1 = [newImage bitmapData];
linesize = [toscale pixelsWide]*4;
for(y=0; y<newy; y++) {
for(x=0; x<320; x++) {
if (x>=16 && x<304) {
for(s=0;s<4;s++) {
if ([toscale pixelsHigh] == 160) {
newv = i0[(x*2+0)*4+(y>>1)*linesize+s];
newv += i0[(x*2+1)*4+(y>>1)*linesize+s];
newv += i0[(x*2+0)*4+((y>>1)+1)*linesize+s];
newv += i0[(x*2+1)*4+((y>>1)+1)*linesize+s];
newv = newv/4;
} else {
newv = i0[(x*2+0)*4+y*linesize+s];
newv += i0[(x*2+1)*4+y*linesize+s];
newv = newv/2;
}
i1[(x-16)*4+y*(288*4)+s] = newv;
}
}
}
}
return (newImage);
}
//
// load a frame, create a window (if neccesary) and display the frame
//
- loadAndDisplayImage: (const char *) filename
{
NSRect cRect;
char *secondFilename,firstFilename[MAXPATHLEN+1];
id image1;
NSSize newSize;
// unsigned char *imageData;
// static BOOL cleared = NO;
if (image) [image dealloc];
printf("loadAndDisplayImage: %s\n", filename);
strcpy( currentFile, filename );
image = [TByteBitmapImageRep alloc];
if (!(secondFilename= strchr(filename,'\n'))) { //one filename, no compositing
[image initFromFile: filename ];
}
else {
strncpy(firstFilename,filename,secondFilename-filename);
firstFilename[secondFilename-filename]='\0';
secondFilename++;//point past the \n
image1 = [[TByteBitmapImageRep alloc] initFromFile:firstFilename];
[image initFromFile: secondFilename ];//result will be in here
//image is the composite of those two...
[self composite:image1 to:image];
}
//
// wolf stuff
//
newSize.width = 256;
newSize.height = 256;
[image setSize: newSize];
if ([paramFileId output3DO] == YES) {
image1 = [self scaleImage: image];
[image dealloc];
image = image1;
}
numQuadCels = (([image pixelsWide] & 0xfff0)*([image pixelsHigh] & 0xfff0))/(MINSIZE*MINSIZE);
numQuadCels += numQuadCels/4 + numQuadCels/16;
// if ([paramFileId deltaFrames] == YES && cleared == NO && [image isPlanar] == NO) {
// cleared = YES;
// imageData = [image data];
// memset( imageData, 0, [image pixelsWide]*[image pixelsHigh]*[image samplesPerPixel]);
// }
if (!quietMode) printf("loadAndDisplayImage: %dx%d\n", [image pixelsWide], [image pixelsHigh]);
if (!quietMode) {
if (!cWindow) {
cRect.origin.x = 8.0 * 48.0;
cRect.origin.y = ([image pixelsHigh]+80);
cRect.size.width = [image pixelsWide];
cRect.size.height = [image pixelsHigh];
cWindow = [[NSWindow alloc] initWithContentRect:cRect styleMask:NSTitledWindowMask
backing:NSBackingStoreBuffered defer:NO];
cRect.origin.x = cRect.origin.y = 0.0;
// [[cWindow contentView] setClipping:NO];
[cWindow setTitle: @"current frame"];
[cWindow makeKeyAndOrderFront: [cWindow contentView]];
[cWindow display];
}
cRect = [[cWindow contentView] bounds];
[[cWindow contentView] lockFocus];
[image drawInRect: cRect];
[[cWindow contentView] unlockFocus];
[cWindow flushWindow];
if (!eWindow) {
cRect.origin.x = 8.0 * 48.0 - ([image pixelsWide]>>1) - 4;
cRect.origin.y = ([image pixelsHigh]+80);
cRect.size.width = [image pixelsWide] >> 1;
cRect.size.height = [image pixelsHigh] >> 1;
eWindow = [[NSWindow alloc] initWithContentRect:cRect styleMask:NSTitledWindowMask
backing:NSBackingStoreBuffered defer:NO];
cRect.origin.x = cRect.origin.y = 0.0;
// [[eWindow contentView] setClipping:NO];
[eWindow setTitle: @"cel error"];
[eWindow makeKeyAndOrderFront: [eWindow contentView]];
[eWindow display];
}
if (!sWindow) {
cRect.origin.x = 8.0 * 48.0 - ([image pixelsWide]>>1) - 4;
cRect.origin.y = ([image pixelsHigh]+80) + (([image pixelsHigh]+48)>>1);
cRect.size.width = [image pixelsWide] >> 1;
cRect.size.height = [image pixelsHigh] >> 1;
sWindow = [[NSWindow alloc] initWithContentRect: cRect styleMask:NSTitledWindowMask
backing:NSBackingStoreBuffered defer:NO];
cRect.origin.x = cRect.origin.y = 0.0;
// [[eWindow contentView] setClipping:NO];
[sWindow setTitle: @"quadtree map"];
[sWindow makeKeyAndOrderFront: [sWindow contentView]];
[sWindow display];
}
cRect = [[sWindow contentView] bounds];
[[sWindow contentView] lockFocus];
[image drawInRect: cRect];
[[sWindow contentView] unlockFocus];
[sWindow flushWindow];
cRect = [[eWindow contentView] bounds];
[[eWindow contentView] lockFocus];
[image drawInRect: cRect];
[[eWindow contentView] unlockFocus];
[eWindow flushWindow];
if (!errImage) {
errImage = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes: NULL
pixelsWide: 1
pixelsHigh: 1
bitsPerSample: 8
samplesPerPixel: 3
hasAlpha: NO
isPlanar: NO
colorSpaceName: NSCalibratedRGBColorSpace
bytesPerRow: 0
bitsPerPixel: 0];
}
// NSPing();
}
return self;
}
- markQuadx: (int)xat quady: (int)yat quads: (int)size error: (float)cerror type: (int)choice
{
NSRect cRect;
byte *err;
static int ywasat = -1;
if (!quietMode) {
cRect.origin.x = (xat)>>1;
cRect.origin.y = ([image pixelsHigh] - yat - size)>>1;
cRect.size.width = cRect.size.height = (size)>>1;
if (size < 1) {
[[sWindow contentView] lockFocus];
if (size == 8 && choice == 1) {
PSsetgray(NSWhite);
} else if (size == 8 && choice == 3) {
PSsetgray(NSLightGray);
} else if (size == 4) {
PSsetgray(NSDarkGray);
} else if (size == 2) {
PSsetgray(NSBlack);
}
NSFrameRectWithWidth(cRect,0.0);
[[sWindow contentView] unlockFocus];
if (!(ywasat & 31)) {
[sWindow flushWindow];
}
}
err = [errImage bitmapData];
err[0] = err[1] = err[2] = 0;
if ( cerror > 31 ) cerror = 31;
if (choice & 1) err[0] = (int)cerror*8;
if (choice & 2) err[1] = (int)cerror*8;
if (choice & 4) err[2] = (int)cerror*8;
[[eWindow contentView] lockFocus];
[errImage drawInRect: cRect];
[[eWindow contentView] unlockFocus];
if (!(ywasat & 31)) {
[eWindow flushWindow];
}
ywasat++;
}
return self;
}
- (NSBitmapImageRep*)currentImage
{
return image;
}
- (id)errorWindow
{
return eWindow;
}
- (id)scaleWindow
{
return sWindow;
}
- (int)numberOfFrames {
return numberOfFrames;
}
- composite:(NSBitmapImageRep *)source to: (NSBitmapImageRep *)destination
{
unsigned short value;
int x,y,bpp,inc,pixelsWide,pixelsHigh,yoff,pixel;
byte *iPlane[5], *dPlane[5];
bpp = [source samplesPerPixel];
pixelsWide = [source pixelsWide];
pixelsHigh = [source pixelsHigh];
if ([source isPlanar]) {
[source getBitmapDataPlanes: iPlane];
[destination getBitmapDataPlanes: dPlane];
for(y=0;y<pixelsHigh;y++) {
yoff = y*pixelsWide;
for(x=0;x<pixelsWide;x++) {
if ([destination hasAlpha]) {
value = dPlane[3][yoff+x];
} else {
value = 255;
}
if (value == 0) {
dPlane[0][yoff+x] = iPlane[0][yoff+x];
dPlane[1][yoff+x] = iPlane[1][yoff+x];
dPlane[2][yoff+x] = iPlane[2][yoff+x];
dPlane[3][yoff+x] = iPlane[3][yoff+x];
} else if (value != 255) {
pixel = ((iPlane[0][yoff+x]*(255-value))/255) + ((dPlane[0][yoff+x]*value)/255);
dPlane[0][yoff+x] = pixel;
pixel = ((iPlane[1][yoff+x]*(255-value))/255) + ((dPlane[1][yoff+x]*value)/255);
dPlane[1][yoff+x] = pixel;
pixel = ((iPlane[2][yoff+x]*(255-value))/255) + ((dPlane[2][yoff+x]*value)/255);
dPlane[2][yoff+x] = pixel;
if ([destination hasAlpha]) {
if (iPlane[3][yoff+x]>dPlane[3][yoff+x]) dPlane[3][yoff+x] = iPlane[3][yoff+x];
}
}
}
}
} else {
iPlane[0] = [source bitmapData];
dPlane[0] = [destination bitmapData];
for(y=0;y<pixelsHigh;y++) {
yoff = y*pixelsWide*bpp;
for(x=0;x<pixelsWide;x++) {
inc = x*bpp;
if ([destination hasAlpha]) {
value = dPlane[0][yoff+inc+3];
} else {
value = 255;
}
if (value == 0) {
dPlane[0][yoff+inc+0] = iPlane[0][yoff+inc+0];
dPlane[0][yoff+inc+1] = iPlane[0][yoff+inc+1];
dPlane[0][yoff+inc+2] = iPlane[0][yoff+inc+2];
dPlane[0][yoff+inc+3] = iPlane[0][yoff+inc+3];
} else if (value != 255) {
pixel = ((iPlane[0][yoff+inc+0]*(255-value))/255) + ((dPlane[0][yoff+inc+0]*value)/255);
dPlane[0][yoff+inc+0] = pixel;
pixel = ((iPlane[0][yoff+inc+1]*(255-value))/255) + ((dPlane[0][yoff+inc+1]*value)/255);
dPlane[0][yoff+inc+1] = pixel;
pixel = ((iPlane[0][yoff+inc+2]*(255-value))/255) + ((dPlane[0][yoff+inc+2]*value)/255);
dPlane[0][yoff+inc+2] = pixel;
if ([destination hasAlpha]) {
if (iPlane[0][yoff+inc+3]>dPlane[0][yoff+inc+3]) dPlane[0][yoff+inc+3] = iPlane[0][yoff+inc+3];
}
}
}
}
}
return self;
}
@end
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