int PCXFile::LoadPCXFile(Byte* filebuff, Dword filesize)
{
memcpy((Byte*)&Pcx_head,(Byte*)filebuff,sizeof(PCXHeader));
int state=0;
if (Pcx_head.bManufacturer==0x0a && Pcx_head.bVersion==0x05)
{
width=Pcx_head.dwWidth-Pcx_head.dwX+1;
height=Pcx_head.dwHeight-Pcx_head.dwY+1;
buffer=kos_GetMemory(width*height*3);
Byte* pPal=filebuff+filesize-768;
Byte* pImg=filebuff+128;
Byte* cBuffer=(Byte*)buffer;
if (Pcx_head.bNPlanes==1)
{
/* 8-bit decoding */
Dword y,i;
Byte cur_byte,counter;
Dword cWidth;
for(y=0; y<height; y++)
{
cWidth=width;
while(cWidth!=0)
{
cur_byte=*(pImg);
pImg++;
counter=1;
if (cur_byte>=192)
{
counter=(cur_byte & 0x3F);
cur_byte=*(pImg);
pImg++;
}
for(i=0; i<counter; i++)
{
*(cBuffer+0)=(pPal[cur_byte*3+0]);
*(cBuffer+1)=(pPal[cur_byte*3+1]);
*(cBuffer+2)=(pPal[cur_byte*3+2]);
cBuffer=cBuffer+3;
cWidth--;
}
}
}
} else if (Pcx_head.bNPlanes==3) {
/* 24-bit decoding */
state=1;
}
} else {
state=1;
}
return state;
}
int TGAFile::LoadTGAFile(Byte* filebuff, Dword filesize)
{
memcpy((Byte*)&Tga_head,(Byte*)filebuff,sizeof(sTGAHeader));
width=Tga_head.Width;
height=Tga_head.Height;
Byte* pImg=filebuff+sizeof(sTGAHeader)+Tga_head.BytesInIdentField+Tga_head.ColorMapOrigin+(Tga_head.ColorMapLength*Tga_head.ColorMapEntrySize/8);
Byte* pPal=filebuff+sizeof(sTGAHeader)+Tga_head.BytesInIdentField+Tga_head.ColorMapOrigin;
Byte* cBuffer;
int x,y;
Byte r;
int sm;
int state=1;
if (Tga_head.ImageDescByte >= 32) sm=height-1; else sm=0;
// Изображение с палитрой (палитра 24 или 32-битная)
if (Tga_head.ImageTypeCode==1)
{
if (Tga_head.ColorMapEntrySize>=24)
{
buffer=kos_GetMemory(width*height*3);
int bpp=Tga_head.ColorMapEntrySize/8;
for(y=height-1;y!=-1;y--)
{
for(x=0;x<width;x++)
{
r=*(pImg); pImg++;
cBuffer=buffer+(abs(sm-y)*width*3)+x*3;
*(cBuffer+0)=(Byte)(pPal[r*bpp+1]);
*(cBuffer+1)=(Byte)(pPal[r*bpp+2]);
*(cBuffer+2)=(Byte)(pPal[r*bpp+3]);
}
}
state=0;
}
}
// ЦВетное изображение без сжатия и палитры
else if (Tga_head.ImageTypeCode==2)
{
switch (Tga_head.ImagePixelSize)
{
case 32:
case 24:
buffer=kos_GetMemory(width*height*3);
for(y=height-1;y!=-1;y--)
{
for(x=0;x<width;x++)
{
cBuffer=buffer+(abs(sm-y)*width*3)+x*3;
*(cBuffer+0)=*(pImg+0);
*(cBuffer+1)=*(pImg+1);
*(cBuffer+2)=*(pImg+2);
pImg=pImg+Tga_head.ImagePixelSize/8;
}
}
state=0;
break;
case 16:
buffer=kos_GetMemory(width*height*3);
for(y=height-1;y!=-1;y--)
{
for(x=0;x<width;x++)
{
cBuffer=buffer+(abs(sm-y)*width*3)+x*3;
*(cBuffer+0)=(Byte)((*(Word*)(pImg)) & 31)<<3;
*(cBuffer+1)=(Byte)((*(Word*)(pImg)>>5) & 31)<<3;
*(cBuffer+2)=(Byte)((*(Word*)(pImg)>>10) & 31)<<3;
pImg=pImg+2;
}
}
state=0;
break;
}
}
// Монохромное изображение
else if (Tga_head.ImageTypeCode==3)
*(cBuffer+1)=(Byte)((*(Word*)(pImg)>>5) & 31)<<3;
*(cBuffer+2)=(Byte)((*(Word*)(pImg)>>10) & 31)<<3;
pImg=pImg+2;
}
}
state=0;
break;
}
}
// Монохромное изображение
else if (Tga_head.ImageTypeCode==3)
{
switch (Tga_head.ImagePixelSize)
{
case 8:
buffer=kos_GetMemory(width*height*3);
for(y=height-1;y!=-1;y--)
{
for(x=0;x<width;x++)
{
cBuffer=buffer+(abs(sm-y)*width*3)+x*3;
*(cBuffer+0)=*(pImg);
*(cBuffer+1)=*(pImg);
*(cBuffer+2)=*(pImg);
pImg++;
}
}
state=0;
break;
}
}
