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私の必要条件は、UIImagePickerController
をプレビューせずに画像をキャプチャすることです。次のコードを使用して、同じものを提示せずに画像をキャプチャしました。AVCapturePhotoOutputが適切な画像を返さない
- (void)clickImage
{
AVCaptureDevice *rearCamera = [self checkIfRearCameraAvailable];
if (rearCamera != nil)
{
photoSession = [[AVCaptureSession alloc] init];
NSError *error;
AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:rearCamera error:&error];
if (!error && [photoSession canAddInput:input])
{
[photoSession addInput:input];
AVCapturePhotoOutput *output = [[AVCapturePhotoOutput alloc] init];
if ([photoSession canAddOutput:output])
{
[photoSession addOutput:output];
AVCaptureConnection *videoConnection = nil;
for (AVCaptureConnection *connection in output.connections)
{
for (AVCaptureInputPort *port in [connection inputPorts])
{
if ([[port mediaType] isEqual:AVMediaTypeVideo])
{
videoConnection = connection;
break;
}
}
if (videoConnection)
{
break;
}
}
if (videoConnection)
{
[photoSession startRunning];
[output capturePhotoWithSettings:[AVCapturePhotoSettings photoSettings] delegate:self];
}
}
}
}
}
- (AVCaptureDevice *)checkIfRearCameraAvailable
{
AVCaptureDevice *rearCamera;
AVCaptureDeviceDiscoverySession *captureDeviceDiscoverySession =
[AVCaptureDeviceDiscoverySession discoverySessionWithDeviceTypes:@[AVCaptureDeviceTypeBuiltInWideAngleCamera]
mediaType:AVMediaTypeVideo
position:AVCaptureDevicePositionBack];
NSArray *allCameras = [captureDeviceDiscoverySession devices];
for (int i = 0; i < allCameras.count; i++)
{
AVCaptureDevice *camera = [allCameras objectAtIndex:i];
if (camera.position == AVCaptureDevicePositionBack)
{
rearCamera = camera;
}
}
return rearCamera;
}
- (void)captureOutput:(AVCapturePhotoOutput *)output didFinishProcessingPhotoSampleBuffer:(CMSampleBufferRef)photoSampleBuffer previewPhotoSampleBuffer:(CMSampleBufferRef)previewPhotoSampleBuffer resolvedSettings:(AVCaptureResolvedPhotoSettings *)resolvedSettings bracketSettings:(AVCaptureBracketedStillImageSettings *)bracketSettings error:(NSError *)error
{
if (error)
{
NSLog(@"error : %@", error.localizedDescription);
}
if (photoSampleBuffer)
{
NSData *data = [AVCapturePhotoOutput JPEGPhotoDataRepresentationForJPEGSampleBuffer:photoSampleBuffer
previewPhotoSampleBuffer:previewPhotoSampleBuffer];
UIImage *image = [UIImage imageWithData:data];
_imgView.image = image;
}
}
上記のコードを使用してイメージをキャプチャしましたが、出力イメージがナイトモードまたはネガティブイメージのように表示されています。
コードを確認してこれを修正してください。私はApple
開発者サイトからサンプルコードを以下のを発見した