103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
#include "..\kosSyst.h"
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#include "tga.h"
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int TGAFile::LoadTGAFile(Byte* filebuff, Dword filesize)
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{
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memcpy((Byte*)&Tga_head,(Byte*)filebuff,sizeof(sTGAHeader));
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width=Tga_head.Width;
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height=Tga_head.Height;
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Byte* pImg=filebuff+sizeof(sTGAHeader)+Tga_head.BytesInIdentField+Tga_head.ColorMapOrigin+(Tga_head.ColorMapLength*Tga_head.ColorMapEntrySize/8);
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Byte* pPal=filebuff+sizeof(sTGAHeader)+Tga_head.BytesInIdentField+Tga_head.ColorMapOrigin;
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Byte* cBuffer;
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int x,y;
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Byte r;
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int sm;
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int state=1;
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if (Tga_head.ImageDescByte >= 32) sm=height-1; else sm=0;
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// Èçîáðàæåíèå ñ ïàëèòðîé (ïàëèòðà 24 èëè 32-áèòíàÿ)
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if (Tga_head.ImageTypeCode==1)
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{
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if (Tga_head.ColorMapEntrySize>=24)
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{
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buffer=kos_GetMemory(width*height*3);
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int bpp=Tga_head.ColorMapEntrySize/8;
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for(y=height-1;y!=-1;y--)
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{
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for(x=0;x<width;x++)
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{
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r=*(pImg); pImg++;
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cBuffer=buffer+(abs(sm-y)*width*3)+x*3;
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*(cBuffer+0)=(Byte)(pPal[r*bpp+1]);
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*(cBuffer+1)=(Byte)(pPal[r*bpp+2]);
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*(cBuffer+2)=(Byte)(pPal[r*bpp+3]);
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}
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}
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state=0;
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}
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}
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// ÖÂåòíîå èçîáðàæåíèå áåç ñæàòèÿ è ïàëèòðû
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else if (Tga_head.ImageTypeCode==2)
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{
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switch (Tga_head.ImagePixelSize)
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{
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case 32:
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case 24:
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buffer=kos_GetMemory(width*height*3);
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for(y=height-1;y!=-1;y--)
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{
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for(x=0;x<width;x++)
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{
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cBuffer=buffer+(abs(sm-y)*width*3)+x*3;
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*(cBuffer+0)=*(pImg+0);
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*(cBuffer+1)=*(pImg+1);
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*(cBuffer+2)=*(pImg+2);
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pImg=pImg+Tga_head.ImagePixelSize/8;
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}
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}
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state=0;
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break;
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case 16:
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buffer=kos_GetMemory(width*height*3);
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for(y=height-1;y!=-1;y--)
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{
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for(x=0;x<width;x++)
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{
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cBuffer=buffer+(abs(sm-y)*width*3)+x*3;
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*(cBuffer+0)=(Byte)((*(Word*)(pImg)) & 31)<<3;
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*(cBuffer+1)=(Byte)((*(Word*)(pImg)>>5) & 31)<<3;
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*(cBuffer+2)=(Byte)((*(Word*)(pImg)>>10) & 31)<<3;
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pImg=pImg+2;
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}
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}
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state=0;
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break;
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}
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}
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// Ìîíîõðîìíîå èçîáðàæåíèå
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else if (Tga_head.ImageTypeCode==3)
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{
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switch (Tga_head.ImagePixelSize)
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{
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case 8:
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buffer=kos_GetMemory(width*height*3);
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for(y=height-1;y!=-1;y--)
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{
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for(x=0;x<width;x++)
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{
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cBuffer=buffer+(abs(sm-y)*width*3)+x*3;
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*(cBuffer+0)=*(pImg);
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*(cBuffer+1)=*(pImg);
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*(cBuffer+2)=*(pImg);
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pImg++;
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}
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}
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state=0;
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break;
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}
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}
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return state;
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} |