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83 lines
1.4 KiB
83 lines
1.4 KiB
/*
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flips RGB images
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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 "ditherRGB_flipped.h"
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#include <iostream>
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using namespace std;
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DitherRGB_flipped::DitherRGB_flipped() {
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flipSpace=NULL;
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flipSize=0;
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}
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DitherRGB_flipped::~DitherRGB_flipped() {
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if (flipSpace != NULL) {
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delete flipSpace;
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}
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}
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void DitherRGB_flipped::flipRGBImage(unsigned char* dest,unsigned char* src,
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int depth,int width,int height,int ) {
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int byteDepth;
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switch(depth) {
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case 8:
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byteDepth=1;
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break;
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case 15:
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case 16:
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byteDepth=2;
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break;
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case 24:
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case 32:
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byteDepth=4;
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break;
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default:
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cout << "unknown byteDepth:"<<depth
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<< " in DitherRGB_flipped::flipRGBImage"<<endl;
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return;
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}
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int spaceNeeded=width*height*byteDepth;
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if (spaceNeeded > flipSize) {
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if (flipSpace != NULL) {
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delete flipSpace;
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}
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cout << "flipSpace:"<<spaceNeeded<<endl;
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flipSpace=new unsigned char[spaceNeeded+64];
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flipSize=spaceNeeded;
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}
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int i;
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int lineSize=width*byteDepth;
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unsigned char* end=dest+lineSize*(height-1);
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for (i=0;i<height;i++) {
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memcpy(end,src,lineSize);
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src+=lineSize;
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end-=lineSize;
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}
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}
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