(void) captureOutput: (AVCaptureOutput ) captureOutput didOutputSampleBuffer: (CMSampleBufferRef) sampleBuffer fromConnection: (AVCaptureConnection ) connection
calling this proxy method occasionally crashes the bugly as follows
8 AVFoundation-[AVCaptureVideoDataOutput _ handleRemoteQueueOperation:] + 344
9 AVFoundation _ 47-[AVCaptureVideoDataOutput _ updateRemoteQueue:] _ block_invoke + 100
10 CoreMedia _ FigRemoteOperationReceiverCreateMessageReceiver_block_invoke + 272
11 CoreMedia _ FigRemoteQueueReceiverSetHandler_block_invoke.2 + 224
12 libdispatch.dylib _ dispatch_client_callout + 16-sharp-sharp-sharp description
related codes
/ / Please paste the code text below (do not replace the code with pictures)
< H1 > pragma mark camera related < / H1 >-
(AVCaptureSession *) captureSession {
if (! _ captureSession) {// _captureSession = [[AVCaptureSession alloc] init]; [_captureSession setSessionPreset:AVCaptureSessionPreset1920x1080];}
return _ captureSession;
}
-
(AVCaptureDeviceInput *) captureInput {
if (! _ captureInput) {_captureInput = [AVCaptureDeviceInput deviceInputWithDevice:self.captureDevice error:nil];}
return _ captureInput;
}
-
(AVCaptureStillImageOutput *) captureOutput {
if (! _ captureOutput) {// _captureOutput = [[AVCaptureStillImageOutput alloc] init]; NSDictionary *outputSettings = [[NSDictionary alloc] initWithObjectsAndKeys:AVVideoCodecJPEG,AVVideoCodecKey,nil]; [_captureOutput setOutputSettings:outputSettings];}
return _ captureOutput;
}
-
(AVCaptureVideoDataOutput *) captureDataOutput {
if (! _ captureDataOutput) {_captureDataOutput = [[AVCaptureVideoDataOutput alloc] init]; _captureDataOutput.alwaysDiscardsLateVideoFrames = YES; dispatch_queue_t queue = dispatch_queue_create("cameraQueue", NULL); [_captureDataOutput setSampleBufferDelegate:self queue:queue]; NSString* formatKey = (NSString*)kCVPixelBufferPixelFormatTypeKey; NSNumber* value = [NSNumber numberWithUnsignedInt:kCVPixelFormatType_32BGRA]; NSDictionary* videoSettings = [NSDictionary dictionaryWithObject:value forKey:formatKey]; [_captureDataOutput setVideoSettings:videoSettings];}
return _ captureDataOutput;
}
-
(AVCaptureVideoPreviewLayer *) capturePreviewLayer {
if (! _ capturePreviewLayer) {_capturePreviewLayer = [AVCaptureVideoPreviewLayer layerWithSession: self.captureSession]; _capturePreviewLayer.frame = CGRectMake(0,0, ScreenW, ScreenH); _capturePreviewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;}
return _ capturePreviewLayer;
}
-
(AVCaptureDevice *) captureDevice {
if (! _ captureDevice) {NSArray *deviceArr = [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo]; for (AVCaptureDevice *device in deviceArr) { if (device.position == AVCaptureDevicePositionBack){ _captureDevice = device; _captureInput = [AVCaptureDeviceInput deviceInputWithDevice:device error:nil]; } }}
return _ captureDevice;
}
/ / input device
if ([self.captureSession canAddInput:self.captureInput]) {
[self.captureSession addInput:self.captureInput];
}
//
if ([self.captureSession canAddOutput:self.captureDataOutput]) {
[self.captureSession addOutput:self.captureDataOutput];
}
//
if ([self.captureSession canAddOutput:self.captureOutput]) {
[self.captureSession addOutput:self.captureOutput];
}
//
[self.view.layer addSublayer:self.capturePreviewLayer];
[self.view.layer addSublayer:self.detectLayer];
self.view.layer.masksToBounds = YES;
[self.view addSubview:self.squareView];