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/*
wrapper for X11 Window
Copyright (C) 1999 Martin Vogt
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published by
the Free Software Foundation.
For more information look at the file COPYRIGHT in this package
*/
#include "ditherWrapper.h"
#include <iostream>
using namespace std;
/*
Flag for gamma correction
Makes images brighter/darker.
It's in the source but not activated (for now)
*/
int gammaCorrectFlag = 0;
double gammaCorrect = 1.0;
/*
Flag for chroma correction.
reduce the color intensity..
It's in the source but not activated (for now)
*/
int chromaCorrectFlag = 0;
double chromaCorrect = 1.0;
DitherWrapper::DitherWrapper(int bpp,unsigned int redMask,
unsigned int greenMask,unsigned int blueMask,
unsigned char pixel[256]) {
this->bpp=bpp;
this->redMask=redMask;
this->greenMask=greenMask;
this->blueMask=blueMask;
dither8Bit=new Dither8Bit(pixel);
dither16Bit=new Dither16Bit(redMask,greenMask,blueMask);
dither32Bit=new Dither32Bit(redMask,greenMask,blueMask);
ditherRGB_flipped=new DitherRGB_flipped();
ditherRGB=new DitherRGB();
#ifdef INTEL
lmmx=mm_support();
#else
lmmx=false;
#endif
}
DitherWrapper::~DitherWrapper(){
delete dither16Bit;
delete dither8Bit;
delete dither32Bit;
delete ditherRGB_flipped;
delete ditherRGB;
}
void DitherWrapper::doDither(YUVPicture* pic,int depth,int imageMode,
unsigned char* dest,int offset) {
//
// according to the input imageType and the output area
// handle different dither methods
//
int inputType=pic->getImageType();
if ( (inputType == PICTURE_YUVMODE_CR_CB) ||
(inputType == PICTURE_YUVMODE_CB_CR) ) {
doDitherYUV(pic,depth,imageMode,dest,offset);
return;
}
if ( (inputType == PICTURE_RGB) ||
(inputType == PICTURE_RGB_FLIPPED) ){
doDitherRGB(pic,depth,imageMode,dest,offset);
return;
}
cout << "unknown inputType:"<<inputType
<< " in DitherWrapper::doDither"<<endl;
}
void DitherWrapper::doDitherRGB(YUVPicture* pic,int depth,int imageMode,
unsigned char* dest,int offset) {
int inputType=pic->getImageType();
switch(inputType) {
case PICTURE_RGB:
doDitherRGB_NORMAL(pic,depth,imageMode,dest,offset);
break;
case PICTURE_RGB_FLIPPED:
doDitherRGB_FLIPPED(pic,depth,imageMode,dest,offset);
break;
default:
cout << "unknown RGB type:"<<inputType<<" in DitherWrapper"<<endl;
exit(0);
}
}
void DitherWrapper::doDitherRGB_NORMAL(YUVPicture* pic,
int depth,int imageMode,
unsigned char* dest,int offset) {
int w=pic->getWidth();
int h=pic->getHeight();
unsigned char* src=pic->getImagePtr();
if (imageMode & _IMAGE_DOUBLE) {
ditherRGB->ditherRGBImage_x2(dest,src,depth,w,h,offset);
} else {
ditherRGB->ditherRGBImage(dest,src,depth,w,h,offset);
}
}
void DitherWrapper::doDitherRGB_FLIPPED(YUVPicture* pic,
int depth,int imageMode,
unsigned char* dest,int offset) {
int w=pic->getWidth();
int h=pic->getHeight();
unsigned char* src=pic->getImagePtr();
ditherRGB_flipped->flipRGBImage(dest,src,depth,w,h,offset);
}
void DitherWrapper::doDitherYUV(YUVPicture* pic,int depth,int imageMode,
unsigned char* dest,int offset) {
if (imageMode & _IMAGE_DOUBLE) {
doDither_x2(pic,depth,dest,offset);
} else {
doDither_std(pic,depth,dest,offset);
}
}
void DitherWrapper::doDither_std(YUVPicture* pic,int depth,
unsigned char* dest,int offset){
int h=pic->getHeight();
int w=pic->getWidth();
unsigned char* lum=pic->getLuminancePtr();
unsigned char* cr=pic->getCrPtr();
unsigned char* cb=pic->getCbPtr();
switch (depth) {
case 8:
dither8Bit->ditherImageOrdered(lum, cr, cb,dest , h, w);
break;
case 16:
if (lmmx) {
ditherBlock(lum,cr,cb,dest,h,w,offset);
} else {
dither16Bit->ditherImageColor16(lum,cr,cb,dest,h,w,offset);
}
break;
case 24:
case 32:
if (lmmx) {
dither32_mmx(lum, cr, cb,dest ,h,w,offset);
} else {
dither32Bit->ditherImageColor32(lum, cr, cb,dest ,h,w,offset);
}
break;
default:
cout << "cannot dither depth:"<<depth<<endl;
}
}
void DitherWrapper::doDither_x2(YUVPicture* pic,int depth,
unsigned char* dest,int offset){
int h=pic->getHeight();
int w=pic->getWidth();
unsigned char* lum=pic->getLuminancePtr();
unsigned char* cr=pic->getCrPtr();
unsigned char* cb=pic->getCbPtr();
switch (depth) {
case 8: {
// we do dither with the 8Bit std YUV ditherer to RGB
// and then we do the double part with the
// RGB ditherer. Its obviously much slower but at
// least it works. To not allocate memory twice
// we are a bit tricky. We know that the image
// has space for doubls size. We but the not double size
// image at the bottom of the dest. Maybe that
// the last line gets overwritten
int memPos=3*h*w;
dither8Bit->ditherImageOrdered(lum, cr, cb,dest+memPos, h, w);
unsigned char* src=dest+memPos;
ditherRGB->ditherRGBImage_x2(dest,src,depth,w,h,0);
break;
}
case 16:
dither16Bit->ditherImageTwox2Color16(lum,cr,cb,dest,h,w,offset);
break;
case 24:
case 32:
if (lmmx) {
//dither32x2_mmx(lum, cr, cb,dest ,h,w,offset);
dither32Bit->ditherImageTwox2Color32(lum,cr,cb,dest,h,w,offset);
} else {
dither32Bit->ditherImageTwox2Color32(lum,cr,cb,dest,h,w,offset);
}
break;
default:
cout << "cannot dither depth:" << depth << endl;
}
}
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