CWE-ou-minkata/Sources/Plasma/PubUtilLib/plGImage/plTGAWriter.cpp

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///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  plTGAWriter Class Functions                                              //
//  Simple utility class for writing a plMipmap out as a TGA file            //
//  Cyan, Inc.                                                               //
//                                                                           //
//// Version History //////////////////////////////////////////////////////////
//                                                                           //
//  8.15.2001 mcn - Created.                                                 //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include "hsTypes.h"
#include "plTGAWriter.h"
#include "plMipmap.h"
#include "hsStream.h"


//// Class Statics ////////////////////////////////////////////////////////////

plTGAWriter plTGAWriter::fInstance;


//// WriteMipmap //////////////////////////////////////////////////////////////

void    plTGAWriter::WriteMipmap( const char *fileName, plMipmap *mipmap )
{
    hsUNIXStream    stream;
    int             x, y;
    hsRGBAColor32   pixel;


    stream.Open( fileName, "wb" );

    /// Write header
    stream.WriteByte( 0 );  // Size of ID field
    stream.WriteByte( 0 );  // Map type
    stream.WriteByte( 2 );  // Type 2 image - Unmapped RGB

    stream.WriteByte( 0 );  // Color map spec
    stream.WriteByte( 0 );  // Color map spec
    stream.WriteByte( 0 );  // Color map spec
    stream.WriteByte( 0 );  // Color map spec
    stream.WriteByte( 0 );  // Color map spec

    stream.WriteLE16( 0 );    // xOrigin
    stream.WriteLE16( 0 );    // yOrigin

    stream.WriteLE16( (UInt16)mipmap->GetWidth() );
    stream.WriteLE16( (UInt16)mipmap->GetHeight() );

    stream.WriteByte( 24 );
    stream.WriteByte( 0 );

    /// Write image data (gotta do inversed, stupid TGAs...)
    for( y = mipmap->GetHeight() - 1; y >= 0; y-- )
    {
        for( x = 0; x < mipmap->GetWidth(); x++ )
        {
            pixel = *( (hsRGBAColor32 *)mipmap->GetAddr32( x, y ) );
            stream.WriteByte( pixel.b );
            stream.WriteByte( pixel.g );
            stream.WriteByte( pixel.r );
        }
    }

    /// All done!
    stream.Close();
}