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/*
* cap_ios_photo_camera.mm
* For iOS video I/O
* by Eduard Feicho on 29/07/12
* Copyright 2012. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#import "opencv2/highgui/cap_ios.h"
#include "precomp.hpp"
#pragma mark - Private Interface
@interface CvPhotoCamera ()
@property (nonatomic, retain) AVCaptureStillImageOutput* stillImageOutput;
@end
#pragma mark - Implementation
@implementation CvPhotoCamera
#pragma mark Public
@synthesize stillImageOutput;
@synthesize delegate;
#pragma mark - Public interface
- (void)takePicture
{
if (cameraAvailable == NO) {
return;
}
cameraAvailable = NO;
[self.stillImageOutput captureStillImageAsynchronouslyFromConnection:self.videoCaptureConnection
completionHandler:
^(CMSampleBufferRef imageSampleBuffer, NSError *error)
{
if (error == nil && imageSampleBuffer != NULL)
{
// TODO check
// NSNumber* imageOrientation = [UIImage cgImageOrientationForUIDeviceOrientation:currentDeviceOrientation];
// CMSetAttachment(imageSampleBuffer, kCGImagePropertyOrientation, imageOrientation, 1);
NSData *jpegData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageSampleBuffer];
dispatch_async(dispatch_get_main_queue(), ^{
[self.captureSession stopRunning];
// Make sure we create objects on the main thread in the main context
UIImage* newImage = [UIImage imageWithData:jpegData];
//UIImageOrientation orientation = [newImage imageOrientation];
// TODO: only apply rotation, don't scale, since we can set this directly in the camera
/*
switch (orientation) {
case UIImageOrientationUp:
case UIImageOrientationDown:
newImage = [newImage imageWithAppliedRotationAndMaxSize:CGSizeMake(640.0, 480.0)];
break;
case UIImageOrientationLeft:
case UIImageOrientationRight:
newImage = [newImage imageWithMaxSize:CGSizeMake(640.0, 480.0)];
default:
break;
}
*/
// We have captured the image, we can allow the user to take another picture
cameraAvailable = YES;
NSLog(@"CvPhotoCamera captured image");
if (self.delegate) {
[self.delegate photoCamera:self capturedImage:newImage];
}
[self.captureSession startRunning];
});
}
}];
}
- (void)stop;
{
[super stop];
self.stillImageOutput = nil;
}
#pragma mark - Private Interface
- (void)createStillImageOutput;
{
// setup still image output with jpeg codec
self.stillImageOutput = [[AVCaptureStillImageOutput alloc] init];
NSDictionary *outputSettings = [NSDictionary dictionaryWithObjectsAndKeys:AVVideoCodecJPEG, AVVideoCodecKey, nil];
[self.stillImageOutput setOutputSettings:outputSettings];
[self.captureSession addOutput:self.stillImageOutput];
for (AVCaptureConnection *connection in self.stillImageOutput.connections) {
for (AVCaptureInputPort *port in [connection inputPorts]) {
if ([port.mediaType isEqual:AVMediaTypeVideo]) {
self.videoCaptureConnection = connection;
break;
}
}
if (self.videoCaptureConnection) {
break;
}
}
NSLog(@"[Camera] still image output created");
}
- (void)createCaptureOutput;
{
[self createStillImageOutput];
}
- (void)createCustomVideoPreview;
{
//do nothing, always use AVCaptureVideoPreviewLayer
}
@end