【发布时间】：2015-09-08 20:22:09
【问题描述】：
我正在使用 GPUImage 创建照片应用程序，相关应用程序始终处于横向模式。我想知道如何将显示的图像顺时针旋转 90 度，因为目前它的方向不正确。
我尝试更改以下行，但它抛出了作物。
_stillCamera.outputImageOrientation = UIInterfaceOrientationPortrait;
这是我目前使用的代码。
[_stillCamera stopCameraCapture];
if([UIScreen mainScreen].bounds.size.width == 667){
if(cameraPosition == 1){
_stillCamera = [[GPUImageStillCamera alloc] initWithSessionPreset:AVCaptureSessionPreset1920x1080 cameraPosition:AVCaptureDevicePositionBack];
}else {
_stillCamera = [[GPUImageStillCamera alloc] initWithSessionPreset:AVCaptureSessionPreset1920x1080 cameraPosition:AVCaptureDevicePositionFront];
}
}
else if([UIScreen mainScreen].bounds.size.width == 568){
if(cameraPosition == 1){
_stillCamera = [[GPUImageStillCamera alloc] initWithSessionPreset:AVCaptureSessionPreset1280x720 cameraPosition:AVCaptureDevicePositionBack];
}else {
_stillCamera = [[GPUImageStillCamera alloc] initWithSessionPreset:AVCaptureSessionPreset1280x720 cameraPosition:AVCaptureDevicePositionFront];
}
} else{
if(cameraPosition == 1){
_stillCamera = [[GPUImageStillCamera alloc] initWithSessionPreset:AVCaptureSessionPreset640x480 cameraPosition:AVCaptureDevicePositionBack];
}else {
_stillCamera = [[GPUImageStillCamera alloc] initWithSessionPreset:AVCaptureSessionPreset640x480 cameraPosition:AVCaptureDevicePositionFront];
}
}
_stillCamera.outputImageOrientation = UIInterfaceOrientationPortrait;
_cropFilter = [[GPUImageCropFilter alloc] initWithCropRegion:CGRectMake(0.f, 0.125f, 1.f, .75f)];
self.lookupImageSource = [[GPUImagePicture alloc] initWithImage:[UIImage imageNamed:@"LondonTown2.png"]];
[self.lookupImageSource processImage];
self.filterLookup = [[GPUImageLookupFilter alloc] init];
[self.lookupImageSource addTarget:self.filterLookup atTextureLocation:1];
[_stillCamera addTarget:self.filterLookup];
[self.filterLookup addTarget:_cropFilter];
[_filterViewViewFinder setFillMode:kGPUImageFillModePreserveAspectRatioAndFill];
//[_stillCamera addTarget:_cropFilter];
//[_cropFilter addTarget:_filter];
[_cropFilter addTarget:_filterView];
[_cropFilter addTarget:_filterViewViewFinder];
[_stillCamera startCameraCapture];
【问题讨论】：
标签： ios objective-c gpuimage