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我使用gpuimage构建摄影应用程序。但是当我选择前置摄像头时，摄像头图像反面出现在背面(左，右)
代码在这里:

 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];

谁能告诉我我遇到了什么问题？
非常感谢!

最佳答案

试试这个...

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];