反向facetime攝像頭被倒置

Question

我使用 gpuimage 來構建一個攝影應用程序。 但是當我選擇前置攝像頭時，后面出現的攝像頭畫面是顛倒的（左，右）代碼在這里：

 stillCamera = [[GPUImageStillCamera alloc] initWithSessionPreset:AVCaptureSessionPreset640x480 cameraPosition:AVCaptureDevicePositionBack]; 
stillCamera.outputImageOrientation = UIInterfaceOrientationPortrait;
filter = [[GPUImageRGBFilter alloc] init];

[stillCamera addTarget:filter];
GPUImageView *filterView = (GPUImageView *)self.view;
[filter addTarget:filterView];

[stillCamera startCameraCapture];

誰能告訴我我遇到了什么問題？ 非常感謝！

Answer 1

嘗試這個...

stillCamera = [[GPUImageStillCamera alloc] initWithSessionPreset:AVCaptureSessionPreset640x480 cameraPosition:AVCaptureDevicePositionBack]; 
stillCamera.outputImageOrientation = UIInterfaceOrientationPortrait;
stillCamera.horizontallyMirrorFrontFacingCamera = NO;
stillCamera.horizontallyMirrorRearFacingCamera = NO;

filter = [[GPUImageRGBFilter alloc] init];

[stillCamera addTarget:filter];
GPUImageView *filterView = (GPUImageView *)self.view;
[filter addTarget:filterView];

[stillCamera startCameraCapture];

Answer 2

嘗試這個 ：

[filterView setInputRotation:kGPUImageFlipHorizonal atIndex:0];

Answer 3

我認為您可以輕松更改最終圖像：

UIImage *finalImage = //image from the camera

UIImage * flippedImage = [UIImage imageWithCGImage:finalImage.CGImage scale:finalImage.scale orientation:UIImageOrientationLeftMirrored];

Answer 4

只需設置：

stillCamera.horizontallyMirrorFrontFacingCamera = YES;

將解決這個問題。