UnpackedBitmap *AllocAndLoadBitmap(const char *filename)
{
size_t length;
void *bytes=AllocAndLoadFile(filename,&length);
if(!bytes) return NULL;
PNGLoader loader;
InitializePNGLoader(&loader,bytes,length);
if(!LoadPNGHeader(&loader))
{
fprintf(stderr,"Not a valid PNG file.\n");
free(bytes);
return NULL;
}
UnpackedBitmap *self=malloc(sizeof(UnpackedBitmap)+
loader.width*loader.height*sizeof(UnpackedPixel));
if(!self) return NULL;
self->width=loader.width;
self->height=loader.height;
if(!LoadPNGImageData(&loader,self->pixels,sizeof(UnpackedPixel)*loader.width,PixelFunc))
{
fprintf(stderr,"Failed while loading PNG data.\n");
free(bytes);
free(self);
return NULL;
}
free(bytes);
return self;
}
bool FPngImageWrapper::SetCompressed( const void* InCompressedData, int32 InCompressedSize )
{
bool bResult = FImageWrapperBase::SetCompressed( InCompressedData, InCompressedSize );
return bResult && LoadPNGHeader(); // Fetch the variables from the header info
}