TextureLoader.cpp

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#include "TextureLoader.h"

TextureLoader::TextureLoader( void ) {
  m_width = 0;
  m_height = 0;
  image2d = NULL;
  image = NULL;
  m_format = 0;
  m_useBGR = true;
}

TextureLoader::~TextureLoader( void ) {
  if( image2d ) {
    delete [] image2d[0];
    delete [] image2d;
  } else {
    delete [] image;
  }
}

bool TextureLoader::load( BYTE *data, unsigned int width, unsigned int height, unsigned int bpp) {
  if( bpp < 3 || bpp > 4 )
    return false;
  setWidth( width );
  setHeight( height );
  setBPP( bpp );
  setImage( data );
  this->setFormat( bpp == 3 ? GL_RGB : GL_RGBA );
  return true;
}

unsigned int TextureLoader::getWidth() {
  return m_width;
}

unsigned int TextureLoader::getHeight() {
  return m_height;
}

unsigned int TextureLoader::getBPP() {
  return m_bpp;
}

GLenum TextureLoader::getFormat() {
  return m_format;
}

BYTE *TextureLoader::getImage() {
  return image;
}

void TextureLoader::setWidth( unsigned int width ) {
  m_width = width;
}


void TextureLoader::setHeight( unsigned int height ) {
  m_height = height;
}


void TextureLoader::setBPP( unsigned int bpp ) {
  m_bpp = bpp;
}


void TextureLoader::setFormat( GLenum format ) {
  m_format = format;
}


void TextureLoader::setImage( BYTE **image ) {
  image2d = image;
  this->image = image[0];
}


void TextureLoader::setImage( BYTE *image ) {
  image2d = NULL;
  this->image = image;
}


void TextureLoader::bgr2rgb( unsigned __int8 colorMode ) {
  BYTE tempColor;
  for( unsigned long index = 0; index < m_width  * m_height  * colorMode; index += colorMode ) {
    tempColor = getImage()[index];
    getImage()[index] = getImage()[index + 2];
    getImage()[index + 2] = tempColor;
  }
}


void TextureLoader::useBGR( bool value ) {
  m_useBGR = value;
}


bool TextureLoader::useBGR( void ) {
  return m_useBGR;
}


bool TextureLoader::isBGR() {
#ifdef GL_BGR_EXT
  if( getFormat() == GL_BGR_EXT )
    return true;
  if( getFormat() == GL_RGB || getFormat() == GL_RGBA )
    return false;
  // return false, if nothing about format is known ;)
  return false;
#else
  return false;
#endif
}


void TextureLoader::toRGB() {
#ifdef GL_BGR_EXT
  if( getFormat() == GL_BGR_EXT ) {
    bgr2rgb( 3 );
    setFormat( GL_RGB );
  }
#endif
}


void TextureLoader::toBGR() {
#ifdef GL_BGR_EXT
  if( getFormat() == GL_RGB ) {
    bgr2rgb( 3 );
    setFormat( GL_BGR_EXT );
  }
#endif
}