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//-----------------------------------
//--- 010 Editor v2.0 Binary Template
//
// File: BMPTemplate.bt
// Author: SweetScape Software
// Revision: 2.1
// Purpose: Defines a template for
// parsing BMP image files.
//-----------------------------------

// Define structures used in BMP files

typedef struct { // bmfh
CHAR bfType[2];
DWORD bfSize;
WORD bfReserved1;
WORD bfReserved2;
DWORD bfOffBits;
} BITMAPFILEHEADER;

typedef struct { // bmih
DWORD biSize;
LONG biWidth;
LONG biHeight;
WORD biPlanes;
WORD biBitCount;
DWORD biCompression;
DWORD biSizeImage;
LONG biXPelsPerMeter;
LONG biYPelsPerMeter;
DWORD biClrUsed;
DWORD biClrImportant;
} BITMAPINFOHEADER;

typedef struct { // rgbq
UBYTE rgbBlue;
UBYTE rgbGreen;
UBYTE rgbRed;
UBYTE rgbReserved;
} RGBQUAD <read=ReadRGBQUAD>;

typedef struct { // rgbt
UBYTE rgbBlue;
UBYTE rgbGreen;
UBYTE rgbRed;
} RGBTRIPLE <read=ReadRGBTRIPLE>;

//---------------------------------------------
// Custom read functions for color types - this allows the
// color to be displayed without having to open up the structure.

string ReadRGBQUAD( RGBQUAD &a )
{
string s;
SPrintf( s, "#%02X%02X%02X%02X", a.rgbReserved, a.rgbRed, a.rgbGreen, a.rgbBlue );
return s;
}

string ReadRGBTRIPLE( RGBTRIPLE &a )
{
string s;
SPrintf( s, "#%02X%02X%02X", a.rgbRed, a.rgbGreen, a.rgbBlue );
return s;
}

//---------------------------------------------

// Define the headers
LittleEndian();
SetBackColor( cLtGray );
BITMAPFILEHEADER bmfh;
BITMAPINFOHEADER bmih;

// Check for header
if( bmfh.bfType != "BM" )
{
Warning( "File is not a bitmap. Template stopped." );
return -1;
}

// Define the color table
if( (bmih.biBitCount != 24) && (bmih.biBitCount != 32) )
{
SetBackColor( cLtAqua );
if( bmih.biClrUsed > 0 )
RGBQUAD aColors[ bmih.biClrUsed ];
else
RGBQUAD aColors[ 1 << bmih.biBitCount ];
}

// Define the bytes of the data
SetBackColor( cNone );
if( bmih.biCompression > 0 )
{
// Bytes are compressed
if( bmih.biSizeImage > 0 )
UBYTE rleData[ bmih.biSizeImage ];
else
UBYTE rleData[ bmfh.bfSize - FTell() ];
}
else
{
// Calculate bytes per line and padding required
local int bytesPerLine = (int)Ceil( bmih.biWidth * bmih.biBitCount / 8.0 );
local int padding = 4 - (bytesPerLine % 4);
if( padding == 4 )
padding = 0;

// Define each line of the image
struct BITMAPLINE {

// Define color data
if( bmih.biBitCount < 8 )
UBYTE imageData[ bytesPerLine ];
else if( bmih.biBitCount == 8 )
UBYTE colorIndex[ bmih.biWidth ];
else if( bmih.biBitCount == 24 )
RGBTRIPLE colors[ bmih.biWidth ];
else if( bmih.biBitCount == 32 )
RGBQUAD colors[ bmih.biWidth ];

// Pad if necessary
if( padding != 0 )
UBYTE padBytes[ padding ];

} lines[ bmih.biHeight ] <optimize=true>;
}

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