I'm working on the face detection functionality and getting buffer in the delegate below but when I try to make UIImage with CIImage, I'm getting image in Landscape code, I have only portrait orientation in app:
1)- On generating session, tried to make portrait mode:
// previewLayer is kind of AVCaptureVideoPreviewLayer
if ([self.previewLayer.connection isVideoOrientationSupported])
[self.previewLayer.connection setVideoOrientation:AVCaptureVideoOrientationPortrait];
2)- Delegate:
- (void)captureOutput:(AVCaptureOutput *)captureOutput
didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
fromConnection:(AVCaptureConnection *)connection
3)- Unable to rotate UIImage as image.CGImage is nil
CVPixelBufferRef pixelBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
///CVPixelBufferRef pixelBuffer = [self rotateBuffer:sampleBuffer];
CFDictionaryRef attachments = CMCopyDictionaryOfAttachments(kCFAllocatorDefault, pixelBuffer, kCMAttachmentMode_ShouldPropagate);
CIImage *ciImage = [[CIImage alloc] initWithCVPixelBuffer:pixelBuffer
options:(__bridge NSDictionary *)attachments];
UIImage *image = [UIImage imageWithCIImage:ciImage];
I'm not sure what's wrong with orientation of image that I get from delegate, I tried with multiple code snaps of stack overflow answers but none of them worked to rotate image or buffer, some are:
iOS app camera orientation in captureOutput
Rotate CGImage taken from video frame
How to directly rotate CVImageBuffer image in IOS 4 without converting to UIImage?
