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/*
this class dithery RGB picture to yuv12
Copyright (C) 2000 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 "dither2YUV.h"
#include <iostream>
using namespace std;
Dither2YUV::Dither2YUV() {
lmmx=mm_support();
}
Dither2YUV::~Dither2YUV(){
}
void Dither2YUV::doDither(YUVPicture* pic,int depth,int ditherSize,
unsigned char* dest,int offset) {
int inputType=pic->getImageType();
switch(inputType) {
case PICTURE_RGB:
doDitherRGB_NORMAL(pic,depth,ditherSize,dest,offset);
break;
default:
std::cout << "unknown RGB type:"<<inputType<<" in Dither2YUV"<<std::endl;
exit(0);
}
}
void Dither2YUV::doDitherRGB_NORMAL(YUVPicture* rgbPic,
int depth,int ditherSize,
unsigned char* dest,int offset) {
switch (ditherSize) {
case _SIZE_NORMAL:
doDither2YUV_std(rgbPic,depth,dest,offset);
break;
case _SIZE_DOUBLE:
std::cout << "double not supported for RGB"<<std::endl;
break;
default:
std::cout << "unknown size:"<<ditherSize<<" in Dither2YUV"<<std::endl;
exit(0);
}
}
void Dither2YUV::doDither2YUV_std(YUVPicture* rgbPic,int depth,
unsigned char* dest,int offset){
int h=rgbPic->getHeight();
int w=rgbPic->getWidth();
int lumLength=w * h;
int colorLength=(w * h) / 4;
unsigned char* lum=dest;
unsigned char* cr=lum+lumLength;
unsigned char* cb=cr+colorLength;
unsigned char* rgbSource=rgbPic->getImagePtr();
switch (depth) {
case 8:
std::cout << "8 bit dither to yuv not supported"<<std::endl;
exit(0);
break;
case 16:
if (lmmx) {
#ifdef INTEL
rgb2yuv16bit_mmx(rgbSource,lum,cr,cb,h,w);
#endif
} else {
rgb2yuv16bit(rgbSource,lum,cr,cb,h,w);
}
break;
case 24:
if (lmmx) {
#ifdef INTEL
rgb2yuv24bit_mmx(rgbSource,lum,cr,cb,h,w);
#endif
} else {
rgb2yuv24bit(rgbSource,lum,cr,cb,h,w);
}
break;
case 32:
if (lmmx) {
#ifdef INTEL
rgb2yuv32bit_mmx(rgbSource,lum,cr,cb,h,w);
#endif
} else {
rgb2yuv32bit(rgbSource,lum,cr,cb,h,w);
}
break;
default:
std::cout << "cannot dither depth:"<<depth<<std::endl;
}
}
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