forked from devand123/cordova-plugin-opentok
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
4 changed files
with
138 additions
and
5 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| // | ||
| // TBExampleVideoCapture+PhotoCapture.h | ||
| // Live-Photo-Capture | ||
| // | ||
| // Created by Charley Robinson on 12/16/13. | ||
| // Copyright (c) 2013 TokBox, Inc. All rights reserved. | ||
| // | ||
|
|
||
| #import "TBExampleVideoCapture.h" | ||
|
|
||
| @interface TBExamplePhotoVideoCapture : TBExampleVideoCapture | ||
|
|
||
| @property (readonly) BOOL isTakingPhoto; | ||
| - (void)takePhotoWithCompletionHandler:(void (^)(UIImage* photo))block; | ||
|
|
||
|
|
||
| @end |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| // | ||
| // TBExampleVideoCapture+PhotoCapture.m | ||
| // Live-Photo-Capture | ||
| // | ||
| // Copyright (c) 2013 TokBox, Inc. All rights reserved. | ||
| // | ||
|
|
||
| #import "TBExamplePhotoVideoCapture.h" | ||
| #import <Availability.h> | ||
| #import <UIKit/UIKit.h> | ||
| #import <ImageIO/CGImageProperties.h> | ||
|
|
||
| @implementation TBExamplePhotoVideoCapture { | ||
| BOOL _isTakingPhoto; | ||
| AVCaptureStillImageOutput* _stillImageOutput; | ||
| } | ||
|
|
||
| - (NSString*)pauseVideoCaptureForPhoto { | ||
| [self.captureSession beginConfiguration]; | ||
| NSString* oldPreset = self.captureSession.sessionPreset; | ||
| [self.captureSession setSessionPreset:AVCaptureSessionPresetPhoto]; | ||
| _stillImageOutput = [[AVCaptureStillImageOutput alloc] init]; | ||
| NSDictionary *outputSettings = [[NSDictionary alloc] | ||
| initWithObjectsAndKeys: | ||
| AVVideoCodecJPEG, AVVideoCodecKey, | ||
| nil]; | ||
| [_stillImageOutput setOutputSettings:outputSettings]; | ||
| [self.captureSession addOutput:_stillImageOutput]; | ||
| [self.captureSession commitConfiguration]; | ||
| double startTime = CACurrentMediaTime(); | ||
| // if your images are coming out dark, you might try increasing this timeout | ||
| double timeout = 1.0; | ||
| while ((timeout > (CACurrentMediaTime() - startTime)) && | ||
| (self.videoInput.device.isAdjustingExposure || | ||
| self.videoInput.device.isAdjustingFocus)) { | ||
| // wait for sensor to adjust. this should not take long | ||
| } | ||
| return oldPreset; | ||
| } | ||
|
|
||
| - (void)resumeVideoCapture:(NSString*)oldPreset { | ||
| [self.captureSession beginConfiguration]; | ||
| [self.captureSession setSessionPreset:oldPreset]; | ||
| [self.captureSession removeOutput:_stillImageOutput]; | ||
| [_stillImageOutput release]; | ||
| [self.captureSession commitConfiguration]; | ||
| } | ||
|
|
||
|
|
||
| - (UIImage*)doPhotoCapture { | ||
|
|
||
| AVCaptureConnection *videoConnection = nil; | ||
| for (AVCaptureConnection *connection in _stillImageOutput.connections) | ||
| { | ||
| for (AVCaptureInputPort *port in [connection inputPorts]) | ||
| { | ||
| if ([[port mediaType] isEqual:AVMediaTypeVideo] ) | ||
| { | ||
| videoConnection = connection; | ||
| break; | ||
| } | ||
| } | ||
| if (videoConnection) | ||
| { | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| dispatch_semaphore_t imageCaptureSemaphore = dispatch_semaphore_create(0); | ||
| __block UIImage* resultImage = nil; | ||
| [_stillImageOutput | ||
| captureStillImageAsynchronouslyFromConnection:videoConnection | ||
| completionHandler: ^(CMSampleBufferRef imageSampleBuffer, | ||
| NSError *error) | ||
| { | ||
| NSData *imageData = | ||
| [AVCaptureStillImageOutput | ||
| jpegStillImageNSDataRepresentation:imageSampleBuffer]; | ||
| resultImage = [[UIImage alloc] initWithData:imageData]; | ||
| dispatch_semaphore_signal(imageCaptureSemaphore); | ||
| }]; | ||
|
|
||
| dispatch_time_t timeout = dispatch_walltime(DISPATCH_TIME_NOW, | ||
| 30 * NSEC_PER_SEC); | ||
| dispatch_semaphore_wait(imageCaptureSemaphore, timeout); | ||
| dispatch_release(imageCaptureSemaphore); | ||
|
|
||
| return resultImage; | ||
| } | ||
|
|
||
| - (void)takePhotoWithCompletionHandler:(void (^)(UIImage* photo))block { | ||
| if (self.isTakingPhoto) { | ||
| return; | ||
| } | ||
| _isTakingPhoto = YES; | ||
| dispatch_async(_capture_queue, ^() { | ||
| NSString* oldPreset = [self pauseVideoCaptureForPhoto]; | ||
| UIImage* result = [self doPhotoCapture]; | ||
| dispatch_async(dispatch_get_main_queue(), ^() { | ||
| block([result autorelease]); | ||
| }); | ||
| [self resumeVideoCapture:oldPreset]; | ||
| _isTakingPhoto = NO; | ||
| }); | ||
| } | ||
|
|
||
| - (BOOL)isTakingPhoto { | ||
| return _isTakingPhoto; | ||
| } | ||
|
|
||
| @end |