//! creates a surface from the file
IImage* CImageLoaderDDS::loadImage(io::IReadFile* file) const
{
u8 *memFile = new u8 [ file->getSize() ];
file->read ( memFile, file->getSize() );
ddsBuffer *header = (ddsBuffer*) memFile;
IImage* image = 0;
s32 width, height;
eDDSPixelFormat pixelFormat;
if ( 0 == DDSGetInfo( header, &width, &height, &pixelFormat) )
{
image = new CImage(ECF_A8R8G8B8, core::dimension2d<u32>(width, height));
if ( DDSDecompress( header, (u8*) image->lock() ) == -1)
{
image->unlock();
image->drop();
image = 0;
}
}
delete [] memFile;
if ( image )
image->unlock();
return image;
}
static void LoadDDSBuffer( byte *buffer, int size, byte **pixels, int *width, int *height ){
int w, h;
ddsPF_t pf;
/* dummy check */
if ( buffer == NULL || size <= 0 || pixels == NULL || width == NULL || height == NULL ) {
return;
}
/* null out */
*pixels = 0;
*width = 0;
*height = 0;
/* get dds info */
if ( DDSGetInfo( (ddsBuffer_t*) buffer, &w, &h, &pf ) ) {
Sys_Printf( "WARNING: Invalid DDS texture\n" );
return;
}
/* only certain types of dds textures are supported */
if ( pf != DDS_PF_ARGB8888 && pf != DDS_PF_DXT1 && pf != DDS_PF_DXT3 && pf != DDS_PF_DXT5 ) {
Sys_Printf( "WARNING: Only DDS texture formats ARGB8888, DXT1, DXT3, and DXT5 are supported (%d)\n", pf );
return;
}
/* create image pixel buffer */
*width = w;
*height = h;
*pixels = safe_malloc( w * h * 4 );
/* decompress the dds texture */
DDSDecompress( (ddsBuffer_t*) buffer, *pixels );
}
Image* LoadDDSBuff( const byte* buffer ){
int width, height;
ddsPF_t pixelFormat;
if ( DDSGetInfo( reinterpret_cast<ddsBuffer_t*>( const_cast<byte*>( buffer ) ), &width, &height, &pixelFormat ) == -1 ) {
return 0;
}
RGBAImage* image = new RGBAImage( width, height );
if ( DDSDecompress( reinterpret_cast<ddsBuffer_t*>( const_cast<byte*>( buffer ) ), image->getRGBAPixels() ) == -1 ) {
image->release();
return 0;
}
return image;
}
