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125 lines
2.3 KiB
125 lines
2.3 KiB
/*
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this class dithery RGB picture to yuv12
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Copyright (C) 2000 Martin Vogt
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Library General Public License as published by
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the Free Software Foundation.
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For more information look at the file COPYRIGHT in this package
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*/
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#include "dither2YUV.h"
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#include <iostream>
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using namespace std;
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Dither2YUV::Dither2YUV() {
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lmmx=mm_support();
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}
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Dither2YUV::~Dither2YUV(){
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}
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void Dither2YUV::doDither(YUVPicture* pic,int depth,int ditherSize,
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unsigned char* dest,int offset) {
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int inputType=pic->getImageType();
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switch(inputType) {
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case PICTURE_RGB:
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doDitherRGB_NORMAL(pic,depth,ditherSize,dest,offset);
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break;
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default:
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std::cout << "unknown RGB type:"<<inputType<<" in Dither2YUV"<<std::endl;
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exit(0);
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}
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}
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void Dither2YUV::doDitherRGB_NORMAL(YUVPicture* rgbPic,
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int depth,int ditherSize,
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unsigned char* dest,int offset) {
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switch (ditherSize) {
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case _SIZE_NORMAL:
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doDither2YUV_std(rgbPic,depth,dest,offset);
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break;
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case _SIZE_DOUBLE:
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std::cout << "double not supported for RGB"<<std::endl;
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break;
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default:
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std::cout << "unknown size:"<<ditherSize<<" in Dither2YUV"<<std::endl;
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exit(0);
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}
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}
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void Dither2YUV::doDither2YUV_std(YUVPicture* rgbPic,int depth,
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unsigned char* dest,int offset){
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int h=rgbPic->getHeight();
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int w=rgbPic->getWidth();
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int lumLength=w * h;
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int colorLength=(w * h) / 4;
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unsigned char* lum=dest;
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unsigned char* cr=lum+lumLength;
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unsigned char* cb=cr+colorLength;
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unsigned char* rgbSource=rgbPic->getImagePtr();
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switch (depth) {
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case 8:
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std::cout << "8 bit dither to yuv not supported"<<std::endl;
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exit(0);
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break;
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case 16:
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if (lmmx) {
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#ifdef INTEL
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rgb2yuv16bit_mmx(rgbSource,lum,cr,cb,h,w);
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#endif
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} else {
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rgb2yuv16bit(rgbSource,lum,cr,cb,h,w);
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}
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break;
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case 24:
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if (lmmx) {
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#ifdef INTEL
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rgb2yuv24bit_mmx(rgbSource,lum,cr,cb,h,w);
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#endif
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} else {
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rgb2yuv24bit(rgbSource,lum,cr,cb,h,w);
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}
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break;
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case 32:
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if (lmmx) {
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#ifdef INTEL
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rgb2yuv32bit_mmx(rgbSource,lum,cr,cb,h,w);
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#endif
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} else {
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rgb2yuv32bit(rgbSource,lum,cr,cb,h,w);
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}
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break;
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default:
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std::cout << "cannot dither depth:"<<depth<<std::endl;
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}
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}
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