BlurGPUImage.mm

- (UIImage *)blurryGPUImage:(UIImage *)image 
              withBlurLevel:(NSInteger)blur {
    GPUImageFastBlurFilter *blurFilter = 
                        [[GPUImageFastBlurFilter alloc] init];
    blurFilter.blurSize = blur;
    UIImage *result = [blurFilter imageByFilteringImage:image];
    return result;
}