CMSampleBufferRef转UIImage

CMSampleBufferRef=>UIImage

- (UIImage *)imageConvert:(CMSampleBufferRef)sampleBuffer
{

if (CMSampleBufferIsValid(sampleBuffer)) {
return nil;
}
CVPixelBufferRef pixelBuffer = (CVPixelBufferRef)CMSampleBufferGetImageBuffer(sampleBuffer);

CIImage *ciImage = [CIImage imageWithCVPixelBuffer:pixelBuffer];

UIImage *image = [UIImage imageWithCIImage:ciImage];
return image;
}