#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
#import <AssetsLibrary/AssetsLibrary.h>
@interface ViewController : UIViewController
@property (strong, nonatomic) AVCaptureSession *captureSession;
@property (strong, nonatomic) AVCaptureDeviceInput *videoInput;
@property (strong, nonatomic) AVCaptureStillImageOutput *stillImageOutput;
- (IBAction)capture:(id)sender;
@end
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.captureSession = [[AVCaptureSession alloc] init];
//Optional: self.captureSession.sessionPreset = AVCaptureSessionPresetMedium;
AVCaptureDevice * device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
NSError * error = nil;
self.videoInput = [AVCaptureDeviceInput deviceInputWithDevice:device error:&error];
if (self.videoInput)
{
[self.captureSession addInput:self.videoInput];
}
else
{
NSLog(@"Input Error: %@", error);
}
self.stillImageOutput = [[AVCaptureStillImageOutput alloc] init];//AVCaptureMovieFileOutput、AVCaptureVideoDataOutput、AVCaptureAudioFileOutput、AVCaptureAudioDataOutput
NSDictionary *stillImageOutputSettings = [[NSDictionary alloc] initWithObjectsAndKeys: AVVideoCodecJPEG, AVVideoCodecKey, nil];
[self.stillImageOutput setOutputSettings:stillImageOutputSettings];
[self.captureSession addOutput:self.stillImageOutput];
AVCaptureVideoPreviewLayer *previewLayer = [AVCaptureVideoPreviewLayer layerWithSession:self.captureSession];
UIView *aView = self.view;
previewLayer.frame = CGRectMake(, , self.view.frame.size.width, self.view.frame.size.height-);
[aView.layer addSublayer:previewLayer]; }
- (IBAction)capture:(id)sender
{
AVCaptureConnection *stillImageConnection = [self.stillImageOutput.connections objectAtIndex:];
if ([stillImageConnection isVideoOrientationSupported])
[stillImageConnection setVideoOrientation:AVCaptureVideoOrientationPortrait];
[[self stillImageOutput] captureStillImageAsynchronouslyFromConnection:stillImageConnection
completionHandler:^(CMSampleBufferRef imageDataSampleBuffer, NSError *error)
{
if (imageDataSampleBuffer != NULL)
{
NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageDataSampleBuffer];
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
UIImage *image = [[UIImage alloc] initWithData:imageData];
[library writeImageToSavedPhotosAlbum:[image CGImage]
orientation:(ALAssetOrientation)[image imageOrientation]
completionBlock:^(NSURL *assetURL, NSError *error)
{
UIAlertView *alert;
if (!error)
{
alert = [[UIAlertView alloc] initWithTitle:@"Photo Saved"
message:@"The photo was successfully saved to your photos library"
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil, nil];
}
else
{
alert = [[UIAlertView alloc] initWithTitle:@"Error Saving Photo"
message:@"The photo was not saved to your photos library"
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil, nil];
}
[alert show];
}
];
}
else
NSLog(@"Error capturing still image: %@", error);
}];
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.captureSession startRunning];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
[self.captureSession stopRunning];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}