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Commit 0f4f4ba0 by Daniel Dahan
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removed commented out AV Capture library

parent 8b825830
Showing with 916 additions and 916 deletions
Source/Capture.swift
////
//// Copyright (C) 2015 GraphKit, Inc. <http://graphkit.io> and other GraphKit contributors.
////
//// This program is free software: you can redistribute it and/or modify
//// it under the terms of the GNU Affero General Public License as published
//// by the Free Software Foundation, either version 3 of the License, or
//// (at your option) any later version.
////
//// This program is distributed in the hope that it will be useful,
//// but WITHOUT ANY WARRANTY; without even the implied warranty of
//// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
//// GNU Affero General Public License for more details.
////
//// You should have received a copy of the GNU Affero General Public License
//// along with this program located at the root of the software package
//// in a file called LICENSE. If not, see <http://www.gnu.org/licenses/>.
////
//
//import UIKit
//import AVFoundation
//import AssetsLibrary
//
//@objc(CaptureDelegate)
//public protocol CaptureDelegate {
// optional func captureDeviceConfigurationFailed(capture: Capture, error: NSError!)
// optional func captureMediaCaptureFailed(capture: Capture, error: NSError!)
// optional func captureAsetLibraryWriteFailed(capture: Capture, error: NSError!)
// optional func capture(capture: Capture, assetLibraryDidWrite image: UIImage!)
//}
//
//public class Capture: NSObject, AVCaptureFileOutputRecordingDelegate {
// //
// // :name: activeVideoInput
// // :description: The video input that is currently active.
// //
// private var activeVideoInput: AVCaptureDeviceInput?
//
// //
// // :name: imageOutput
// // :description: When the session is taking a photo, this is the output manager.
// //
// private lazy var imageOutput: AVCaptureStillImageOutput = AVCaptureStillImageOutput()
//
// //
// // :name: movieOutput
// // :description: When the session is shooting a video, this is the output manager.
// //
// private lazy var movieOutput: AVCaptureMovieFileOutput = AVCaptureMovieFileOutput()
//
// //
// // :name: movieOutputURL
// // :description: The output URL of the movie file.
// //
// private var movieOutputURL: NSURL?
//
// //
// // :name: queue
// // :description: Async job queue.
// //
// private lazy var queue: dispatch_queue_t = {
// return dispatch_queue_create("io.graphkit.Capture", nil)
// }()
//
// //
// // :name: CaptureAdjustingExposureContext
// // :description: Used for KVO observation context.
// //
// public var CaptureAdjustingExposureContext: NSString?
//
// /**
// * cameraCount
// * The number of available cameras on the device.
// */
// public var cameraCount: Int {
// return AVCaptureDevice.devicesWithMediaType(AVMediaTypeVideo).count
// }
//
// /**
// * session
// * An AVCaptureSession that manages all inputs and outputs in that session.
// */
// public lazy var session: AVCaptureSession = AVCaptureSession()
//
// /**
// * delegate
// * An optional instance of CaptureDelegate to handle events that are triggered during various
// * stages in the session.
// */
// public weak var delegate: CaptureDelegate?
//
// /**
// * prepareSession
// * A helper method that prepares the session with the various available inputs and outputs.
// * @param preset: String, default: AVCaptureSessionPresetHigh
// * @return A boolean value, true if successful, false otherwise.
// */
// public func prepareSession(preset: String = AVCaptureSessionPresetHigh) -> Bool {
// session.sessionPreset = preset
//
// // setup default camera device
// let videoDevice: AVCaptureDevice = AVCaptureDevice.defaultDeviceWithMediaType(AVMediaTypeVideo)
// let videoInput: AVCaptureDeviceInput? = try? AVCaptureDeviceInput(device: videoDevice)
//
// if nil == videoInput {
// return false
// }
//
// if session.canAddInput(videoInput) {
// session.addInput(videoInput)
// activeVideoInput = videoInput
// }
//
// let audioDevice: AVCaptureDevice = AVCaptureDevice.defaultDeviceWithMediaType(AVMediaTypeAudio)
// let audioInput: AVCaptureDeviceInput? = try? AVCaptureDeviceInput(device: audioDevice)
//
// if nil == audioInput {
// return false
// }
//
// if session.canAddInput(audioInput) {
// session.addInput(audioInput)
// }
//
// imageOutput.outputSettings = [AVVideoCodecKey: AVVideoCodecJPEG]
//
// if session.canAddOutput(imageOutput) {
// session.addOutput(imageOutput)
// }
//
// if session.canAddOutput(movieOutput) {
// session.addOutput(movieOutput)
// }
//
// return true
// }
//
// /**
// * startSession
// * Starts the capture session if it is not already running.
// */
// public func startSession() {
// if !session.running {
// dispatch_async(queue) {
// self.session.startRunning()
// }
// }
// }
//
// /**
// * stopSession
// * Stops the capture session if it is already running.
// */
// public func stopSession() {
// if session.running {
// dispatch_async(queue) {
// self.session.stopRunning()
// }
// }
// }
//
// /**
// * cameraWithPosition
// * @param position: AVCaptureDevicePosition
// * @return An AVCaptureDevice optional.
// */
// public func cameraWithPosition(position: AVCaptureDevicePosition) -> AVCaptureDevice? {
// for device in AVCaptureDevice.devicesWithMediaType(AVMediaTypeVideo) {
// if position == device.position {
// return device as? AVCaptureDevice
// }
// }
// return nil
// }
//
// /**
// * activeCamera
// * @return The active cameras video input device.
// */
// public var activeCamera: AVCaptureDevice {
// get {
// return activeVideoInput!.device
// }
// }
//
// /**
// * inactiveCamera
// * @return The inactive cameras video input device.
// */
// public var inactiveCamera: AVCaptureDevice? {
// get {
// var device: AVCaptureDevice?
// if 1 < cameraCount {
// device = activeCamera.position == .Back ? cameraWithPosition(.Front) : cameraWithPosition(.Back)
// }
// return device
// }
// }
//
// /**
// * canSwitchCameras
// * Checks whether the camera can be switched. This would require at least two cameras.
// * @return A boolean of the result, true if yes, false otherwise.
// */
// public var canSwitchCameras: Bool {
// return 1 < cameraCount
// }
//
// /**
// * switchCamera
// * If it is possible to switch cameras, then the camera will be switched from the opposite facing camera.
// * @return A boolean of the result, true if switched, false otherwise.
// * @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
// */
// public func switchCamera() -> Bool {
// if !canSwitchCameras {
// return false
// }
//
// let videoDevice: AVCaptureDevice? = inactiveCamera
// let videoInput: AVCaptureDeviceInput? = try? AVCaptureDeviceInput(device: videoDevice)
//
// if nil == videoInput {
// session.beginConfiguration()
// session.removeInput(activeVideoInput)
//
// if session.canAddInput(videoInput) {
// activeVideoInput = videoInput
// } else {
// session.addInput(activeVideoInput)
// }
//
// session.commitConfiguration()
// } else {
// delegate?.captureDeviceConfigurationFailed?(self, error: nil)
// return false
// }
//
// return true
// }
//
// /**
// * cameraHasFlash
// * Checks whether the camera supports flash.
// * @return A boolean of the result, true if yes, false otherwise.
// */
// public var cameraHasFlash: Bool {
// return activeCamera.hasFlash
// }
//
// /**
// * flashMode
// * A mutator and accessor for the flashMode property.
// * @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
// */
// public var flashMode: AVCaptureFlashMode {
// get {
// return activeCamera.flashMode
// }
// set(value) {
// let device: AVCaptureDevice = activeCamera
// if flashMode != device.flashMode && device.isFlashModeSupported(flashMode) {
// var error: NSError?
// do {
// try device.lockForConfiguration()
// device.flashMode = flashMode
// device.unlockForConfiguration()
// } catch let error1 as NSError {
// error = error1
// delegate?.captureDeviceConfigurationFailed?(self, error: error)
// }
// }
// }
// }
//
// /**
// * cameraHasTorch
// * Checks whether the device supports torch feature.
// * @return A boolean of the result, true if yes, false otherwise.
// */
// public var cameraHasTorch: Bool {
// get {
// return activeCamera.hasTorch
// }
// }
//
// /**
// * torchMode
// * A mutator and accessor for the torchMode property.
// * @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
// */
// public var torchMode: AVCaptureTorchMode {
// get {
// return activeCamera.torchMode
// }
// set(value) {
// let device: AVCaptureDevice = activeCamera
// if torchMode != device.torchMode && device.isTorchModeSupported(torchMode) {
// var error: NSError?
// do {
// try device.lockForConfiguration()
// device.torchMode = torchMode
// device.unlockForConfiguration()
// } catch let error1 as NSError {
// error = error1
// delegate?.captureDeviceConfigurationFailed?(self, error: error)
// }
// }
// }
// }
//
// /**
// * cameraSupportsTapToFocus
// * Checks whether the device supports tap to focus.
// * @return A boolean of the result, true if yes, false otherwise.
// */
// public var cameraSupportsTapToFocus: Bool {
// get {
// return activeCamera.focusPointOfInterestSupported
// }
// }
//
// /**
// * focusAtpoint
// * Sets the point to focus at on the screen.
// * @param point: CGPoint
// * @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
// */
// public func focusAtPoint(point: CGPoint) {
// let device: AVCaptureDevice = activeCamera
// if device.focusPointOfInterestSupported && device.isFocusModeSupported(.AutoFocus) {
// var error: NSError?
// do {
// try device.lockForConfiguration()
// device.focusPointOfInterest = point
// device.focusMode = .AutoFocus
// device.unlockForConfiguration()
// } catch let error1 as NSError {
// error = error1
// delegate?.captureDeviceConfigurationFailed?(self, error: error)
// }
// }
// }
//
// /**
// * cameraSupportsTapToExpose
// * Checks whether the device supports tap to expose.
// * @return A boolean of the result, true if yes, false otherwise.
// */
// public var cameraSupportsTapToExpose: Bool {
// get {
// return activeCamera.exposurePointOfInterestSupported
// }
// }
//
// /**
// * exposeAtPoint
// * Sets a point for exposure.
// * @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
// */
// public func exposeAtPoint(point: CGPoint) {
// let device: AVCaptureDevice = activeCamera
// let exposureMode: AVCaptureExposureMode = .ContinuousAutoExposure
//
// if device.exposurePointOfInterestSupported && device.isExposureModeSupported(exposureMode) {
// var error: NSError?
// do {
// try device.lockForConfiguration()
// device.exposurePointOfInterest = point
// device.exposureMode = exposureMode
//
// if device.isExposureModeSupported(.Locked) {
// device.addObserver(self, forKeyPath: "adjustingExposure", options: .New, context: &CaptureAdjustingExposureContext)
// }
// device.unlockForConfiguration()
// } catch let error1 as NSError {
// error = error1
// delegate?.captureDeviceConfigurationFailed?(self, error: error)
// }
// }
// }
//
// /**
// * override to set observeValueForKeyPath and handle exposure observance.
// * @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
// */
// override public func observeValueForKeyPath(keyPath: String?, ofObject object: AnyObject?, change: [String : AnyObject]?, context: UnsafeMutablePointer<Void>) {
// if context == &CaptureAdjustingExposureContext {
// let device: AVCaptureDevice = object as! AVCaptureDevice
//
// if device.adjustingExposure && device.isExposureModeSupported(.Locked) {
// object!.removeObserver(self, forKeyPath: "adjustingExposure", context: &CaptureAdjustingExposureContext)
// dispatch_async(queue) {
// var error: NSError?
// do {
// try device.lockForConfiguration()
// device.unlockForConfiguration()
// } catch let e as NSError {
// error = e
// self.delegate?.captureDeviceConfigurationFailed?(self, error: error)
// } catch {
// fatalError()
// }
// }
// } else {
// super.observeValueForKeyPath(keyPath, ofObject: object, change: change, context: context)
// }
// }
// }
//
// /**
// * resetFocusAndExposureModes
// * Resets to default configuration for device focus and exposure mode.
// * @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
// */
// public func resetFocusAndExposureModes() {
// let device: AVCaptureDevice = activeCamera
//
// let exposureMode: AVCaptureExposureMode = .ContinuousAutoExposure
// let canResetExposure: Bool = device.focusPointOfInterestSupported && device.isExposureModeSupported(exposureMode)
//
// let focusMode: AVCaptureFocusMode = .ContinuousAutoFocus
// let canResetFocus: Bool = device.focusPointOfInterestSupported && device.isFocusModeSupported(focusMode)
//
// let centerPoint: CGPoint = CGPointMake(0.5, 0.5)
//
// var error: NSError?
// do {
// try device.lockForConfiguration()
// if canResetFocus {
// device.focusMode = focusMode
// device.focusPointOfInterest = centerPoint
// }
// if canResetExposure {
// device.exposureMode = exposureMode
// device.exposurePointOfInterest = centerPoint
// }
// device.unlockForConfiguration()
// } catch let error1 as NSError {
// error = error1
// delegate?.captureDeviceConfigurationFailed?(self, error: error)
// }
// }
//
// /**
// * captureStillImage
// * Captures the image and write the photo to the user's asset library.
// * @delegate If the success, the capture(capture: Capture!, assetLibraryDidWrite image: UIImage!) is called.
// * @delegate If failure, capture(capture: Capture!, assetLibraryWriteFailed error: NSError!) is called.
// */
// public func captureStillImage() {
// let connection: AVCaptureConnection = imageOutput.connectionWithMediaType(AVMediaTypeVideo)
// if connection.supportsVideoOrientation {
// connection.videoOrientation = currentVideoOrientation
// }
// imageOutput.captureStillImageAsynchronouslyFromConnection(connection) { (sampleBuffer: CMSampleBufferRef?, error: NSError?) in
// if nil == sampleBuffer {
// self.delegate?.captureAsetLibraryWriteFailed?(self, error: error)
// } else {
// let imageData: NSData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(sampleBuffer)
// let image: UIImage = UIImage(data: imageData)!
// self.writeImageToAssetsLibrary(image)
// }
// }
// }
//
// /**
// * isRecording
// * Checkts whether the device is currently recording.
// * @return A boolean of the result, true if yes, false otherwise.
// */
// public var isRecording: Bool {
// get {
// return movieOutput.recording
// }
// }
//
// /**
// * startRecording
// * If the device is not currently recording, this starts the movie recording.
// * @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
// */
// public func startRecording() {
// if !isRecording {
// let connection: AVCaptureConnection = movieOutput.connectionWithMediaType(AVMediaTypeVideo)
// if connection.supportsVideoOrientation {
// connection.videoOrientation = currentVideoOrientation
// }
// if connection.supportsVideoStabilization {
// connection.preferredVideoStabilizationMode = .Auto
// }
//
// let device: AVCaptureDevice = activeCamera
//
// if device.smoothAutoFocusSupported {
// var error: NSError?
// do {
// try device.lockForConfiguration()
// device.smoothAutoFocusEnabled = false
// device.unlockForConfiguration()
// } catch let error1 as NSError {
// error = error1
// delegate?.captureDeviceConfigurationFailed?(self, error: error)
// }
// }
// movieOutputURL = uniqueURL
// movieOutput.startRecordingToOutputFileURL(movieOutputURL, recordingDelegate: self)
// }
// }
//
// /**
// * stopRecording
// * If the device is currently recoring, this stops the movie recording.
// */
// public func stopRecording() {
// if isRecording {
// movieOutput.stopRecording()
// }
// }
//
// /**
// * recordedDuration
// * Retrieves the movie recorded duration.
// * @return A CMTime value.
// */
// public var recordedDuration: CMTime {
// get {
// return movieOutput.recordedDuration
// }
// }
//
// /**
// * currentVideoOrientation
// * Retrieves the current orientation of the device.
// * @return A AVCaptureVideoOrientation value, [Portrait, LandscapeLeft, PortraitUpsideDown, LandscapeRight].
// */
// public var currentVideoOrientation: AVCaptureVideoOrientation {
// var orientation: AVCaptureVideoOrientation?
// switch UIDevice.currentDevice().orientation {
// case .Portrait:
// orientation = .Portrait
// break
// case .LandscapeRight:
// orientation = .LandscapeLeft
// break
// case .PortraitUpsideDown:
// orientation = .PortraitUpsideDown
// break
// default:
// orientation = .LandscapeRight
// }
// return orientation!
// }
//
// /**
// * uniqueURL
// * A unique URL generated for the movie video.
// * @return An optional NSURL value.
// */
// private var uniqueURL: NSURL? {
// let fileManager: NSFileManager = NSFileManager.defaultManager()
// let tempDirectoryTemplate: String = (NSTemporaryDirectory() as NSString).stringByAppendingPathComponent("FocusLibrary")
// do {
// try fileManager.createDirectoryAtPath(tempDirectoryTemplate, withIntermediateDirectories: true, attributes: nil)
// return NSURL.fileURLWithPath(tempDirectoryTemplate + "/test.mov")
// } catch {}
// return nil
// }
//
// /**
// * postAssetLibraryNotification
// * Fires an asynchronous call to the capture(capture: Capture!, assetLibraryDidWrite image: UIImage!) delegate.
// * @param image: UIImage!
// * @delegate An asynchronous call to capture(capture: Capture!, assetLibraryDidWrite image: UIImage!) delegate.
// */
// private func postAssetLibraryNotification(image: UIImage!) {
// dispatch_async(queue) {
// self.delegate?.capture?(self, assetLibraryDidWrite: image)
// }
// }
//
// /**
// * writeImageToAssetsLibrary
// * Writes the image file to the user's asset library.
// * @param image: UIImage!
// * @delegate If successful, an asynchronous call to capture(capture: Capture!, assetLibraryDidWrite image: UIImage!) delegate.
// * @delegate If failure, capture(capture: Capture!, assetLibraryWriteFailed error: NSError!) is called.
// */
// private func writeImageToAssetsLibrary(image: UIImage) {
// let library: ALAssetsLibrary = ALAssetsLibrary()
// library.writeImageToSavedPhotosAlbum(image.CGImage, orientation: ALAssetOrientation(rawValue: image.imageOrientation.rawValue)!) { (path: NSURL!, error: NSError?) -> Void in
// if nil == error {
// self.postAssetLibraryNotification(image)
// } else {
// self.delegate?.captureAsetLibraryWriteFailed?(self, error: error)
// }
// }
// }
//
// /**
// * writeVideoToAssetsLibrary
// * Writes the video file to the user's asset library.
// * @param videoURL: NSURL!
// * @delegate If successful, an asynchronous call to capture(capture: Capture!, assetLibraryDidWrite image: UIImage!) delegate.
// * @delegate If failure, capture(capture: Capture!, assetLibraryWriteFailed error: NSError!) is called.
// */
// private func writeVideoToAssetsLibrary(videoURL: NSURL!) {
// let library: ALAssetsLibrary = ALAssetsLibrary()
// if library.videoAtPathIsCompatibleWithSavedPhotosAlbum(videoURL) {
// library.writeVideoAtPathToSavedPhotosAlbum(videoURL) { (path: NSURL!, error: NSError?) in
// if nil == error {
// self.generateThumbnailForVideoAtURL(videoURL)
// } else {
// self.delegate?.captureAsetLibraryWriteFailed?(self, error: error)
// }
// }
// }
// }
//
// /**
// * generateThumbnailForVideoAtURL
// * Generates a thumbnail for the video URL specified.
// * @param videoURL: NSURL!
// * @delegate An asynchronous call to capture(capture: Capture!, assetLibraryDidWrite image: UIImage!) delegate.
// */
// private func generateThumbnailForVideoAtURL(videoURL: NSURL!) {
// dispatch_async(queue) {
// do {
// let asset: AVAsset = AVAsset(URL: videoURL)
// let imageGenerator: AVAssetImageGenerator = AVAssetImageGenerator(asset: asset)
// imageGenerator.maximumSize = CGSizeMake(100, 0)
// imageGenerator.appliesPreferredTrackTransform = true
//
// let imageRef: CGImageRef = try imageGenerator.copyCGImageAtTime(kCMTimeZero, actualTime: nil)
// let image: UIImage = UIImage(CGImage: imageRef)
//
// dispatch_async(dispatch_get_main_queue()) {
// self.postAssetLibraryNotification(image)
// }
// } catch {}
// }
// }
//
// /**
// * delegate method for capturing video file.
// * @delegate If successful, an asynchronous call to capture(capture: Capture!, assetLibraryDidWrite image: UIImage!) delegate.
// * @delegate If failure, capture(capture: Capture!, mediaCaptureFailed error: NSError!) is called.
// */
// public func captureOutput(captureOutput: AVCaptureFileOutput!, didFinishRecordingToOutputFileAtURL outputFileURL: NSURL!, fromConnections connections: [AnyObject]!, error: NSError!) {
// if nil == error {
// writeVideoToAssetsLibrary(movieOutputURL!.copy() as! NSURL)
// } else {
// delegate?.captureMediaCaptureFailed?(self, error: error)
// }
// movieOutputURL = nil
// }
//}
\ No newline at end of file
// Copyright (C) 2015 GraphKit, Inc. <http://graphkit.io> and other GraphKit contributors.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program located at the root of the software package
// in a file called LICENSE. If not, see <http://www.gnu.org/licenses/>.
//
import UIKit
import AVFoundation
import AssetsLibrary
@objc(CaptureDelegate)
public protocol CaptureDelegate {
optional func captureDeviceConfigurationFailed(capture: Capture, error: NSError!)
optional func captureMediaCaptureFailed(capture: Capture, error: NSError!)
optional func captureAsetLibraryWriteFailed(capture: Capture, error: NSError!)
optional func capture(capture: Capture, assetLibraryDidWrite image: UIImage!)
}
public class Capture: NSObject, AVCaptureFileOutputRecordingDelegate {
//
// :name: activeVideoInput
// :description: The video input that is currently active.
//
private var activeVideoInput: AVCaptureDeviceInput?
//
// :name: imageOutput
// :description: When the session is taking a photo, this is the output manager.
//
private lazy var imageOutput: AVCaptureStillImageOutput = AVCaptureStillImageOutput()
//
// :name: movieOutput
// :description: When the session is shooting a video, this is the output manager.
//
private lazy var movieOutput: AVCaptureMovieFileOutput = AVCaptureMovieFileOutput()
//
// :name: movieOutputURL
// :description: The output URL of the movie file.
//
private var movieOutputURL: NSURL?
//
// :name: queue
// :description: Async job queue.
//
private lazy var queue: dispatch_queue_t = {
return dispatch_queue_create("io.graphkit.Capture", nil)
}()
//
// :name: CaptureAdjustingExposureContext
// :description: Used for KVO observation context.
//
public var CaptureAdjustingExposureContext: NSString?
/**
* cameraCount
* The number of available cameras on the device.
*/
public var cameraCount: Int {
return AVCaptureDevice.devicesWithMediaType(AVMediaTypeVideo).count
}
/**
* session
* An AVCaptureSession that manages all inputs and outputs in that session.
*/
public lazy var session: AVCaptureSession = AVCaptureSession()
/**
* delegate
* An optional instance of CaptureDelegate to handle events that are triggered during various
* stages in the session.
*/
public weak var delegate: CaptureDelegate?
/**
* prepareSession
* A helper method that prepares the session with the various available inputs and outputs.
* @param preset: String, default: AVCaptureSessionPresetHigh
* @return A boolean value, true if successful, false otherwise.
*/
public func prepareSession(preset: String = AVCaptureSessionPresetHigh) -> Bool {
session.sessionPreset = preset
// setup default camera device
let videoDevice: AVCaptureDevice = AVCaptureDevice.defaultDeviceWithMediaType(AVMediaTypeVideo)
let videoInput: AVCaptureDeviceInput? = try? AVCaptureDeviceInput(device: videoDevice)
if nil == videoInput {
return false
}
if session.canAddInput(videoInput) {
session.addInput(videoInput)
activeVideoInput = videoInput
}
let audioDevice: AVCaptureDevice = AVCaptureDevice.defaultDeviceWithMediaType(AVMediaTypeAudio)
let audioInput: AVCaptureDeviceInput? = try? AVCaptureDeviceInput(device: audioDevice)
if nil == audioInput {
return false
}
if session.canAddInput(audioInput) {
session.addInput(audioInput)
}
imageOutput.outputSettings = [AVVideoCodecKey: AVVideoCodecJPEG]
if session.canAddOutput(imageOutput) {
session.addOutput(imageOutput)
}
if session.canAddOutput(movieOutput) {
session.addOutput(movieOutput)
}
return true
}
/**
* startSession
* Starts the capture session if it is not already running.
*/
public func startSession() {
if !session.running {
dispatch_async(queue) {
self.session.startRunning()
}
}
}
/**
* stopSession
* Stops the capture session if it is already running.
*/
public func stopSession() {
if session.running {
dispatch_async(queue) {
self.session.stopRunning()
}
}
}
/**
* cameraWithPosition
* @param position: AVCaptureDevicePosition
* @return An AVCaptureDevice optional.
*/
public func cameraWithPosition(position: AVCaptureDevicePosition) -> AVCaptureDevice? {
for device in AVCaptureDevice.devicesWithMediaType(AVMediaTypeVideo) {
if position == device.position {
return device as? AVCaptureDevice
}
}
return nil
}
/**
* activeCamera
* @return The active cameras video input device.
*/
public var activeCamera: AVCaptureDevice {
get {
return activeVideoInput!.device
}
}
/**
* inactiveCamera
* @return The inactive cameras video input device.
*/
public var inactiveCamera: AVCaptureDevice? {
get {
var device: AVCaptureDevice?
if 1 < cameraCount {
device = activeCamera.position == .Back ? cameraWithPosition(.Front) : cameraWithPosition(.Back)
}
return device
}
}
/**
* canSwitchCameras
* Checks whether the camera can be switched. This would require at least two cameras.
* @return A boolean of the result, true if yes, false otherwise.
*/
public var canSwitchCameras: Bool {
return 1 < cameraCount
}
/**
* switchCamera
* If it is possible to switch cameras, then the camera will be switched from the opposite facing camera.
* @return A boolean of the result, true if switched, false otherwise.
* @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
*/
public func switchCamera() -> Bool {
if !canSwitchCameras {
return false
}
let videoDevice: AVCaptureDevice? = inactiveCamera
let videoInput: AVCaptureDeviceInput? = try? AVCaptureDeviceInput(device: videoDevice)
if nil == videoInput {
session.beginConfiguration()
session.removeInput(activeVideoInput)
if session.canAddInput(videoInput) {
activeVideoInput = videoInput
} else {
session.addInput(activeVideoInput)
}
session.commitConfiguration()
} else {
delegate?.captureDeviceConfigurationFailed?(self, error: nil)
return false
}
return true
}
/**
* cameraHasFlash
* Checks whether the camera supports flash.
* @return A boolean of the result, true if yes, false otherwise.
*/
public var cameraHasFlash: Bool {
return activeCamera.hasFlash
}
/**
* flashMode
* A mutator and accessor for the flashMode property.
* @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
*/
public var flashMode: AVCaptureFlashMode {
get {
return activeCamera.flashMode
}
set(value) {
let device: AVCaptureDevice = activeCamera
if flashMode != device.flashMode && device.isFlashModeSupported(flashMode) {
var error: NSError?
do {
try device.lockForConfiguration()
device.flashMode = flashMode
device.unlockForConfiguration()
} catch let error1 as NSError {
error = error1
delegate?.captureDeviceConfigurationFailed?(self, error: error)
}
}
}
}
/**
* cameraHasTorch
* Checks whether the device supports torch feature.
* @return A boolean of the result, true if yes, false otherwise.
*/
public var cameraHasTorch: Bool {
get {
return activeCamera.hasTorch
}
}
/**
* torchMode
* A mutator and accessor for the torchMode property.
* @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
*/
public var torchMode: AVCaptureTorchMode {
get {
return activeCamera.torchMode
}
set(value) {
let device: AVCaptureDevice = activeCamera
if torchMode != device.torchMode && device.isTorchModeSupported(torchMode) {
var error: NSError?
do {
try device.lockForConfiguration()
device.torchMode = torchMode
device.unlockForConfiguration()
} catch let error1 as NSError {
error = error1
delegate?.captureDeviceConfigurationFailed?(self, error: error)
}
}
}
}
/**
* cameraSupportsTapToFocus
* Checks whether the device supports tap to focus.
* @return A boolean of the result, true if yes, false otherwise.
*/
public var cameraSupportsTapToFocus: Bool {
get {
return activeCamera.focusPointOfInterestSupported
}
}
/**
* focusAtpoint
* Sets the point to focus at on the screen.
* @param point: CGPoint
* @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
*/
public func focusAtPoint(point: CGPoint) {
let device: AVCaptureDevice = activeCamera
if device.focusPointOfInterestSupported && device.isFocusModeSupported(.AutoFocus) {
var error: NSError?
do {
try device.lockForConfiguration()
device.focusPointOfInterest = point
device.focusMode = .AutoFocus
device.unlockForConfiguration()
} catch let error1 as NSError {
error = error1
delegate?.captureDeviceConfigurationFailed?(self, error: error)
}
}
}
/**
* cameraSupportsTapToExpose
* Checks whether the device supports tap to expose.
* @return A boolean of the result, true if yes, false otherwise.
*/
public var cameraSupportsTapToExpose: Bool {
get {
return activeCamera.exposurePointOfInterestSupported
}
}
/**
* exposeAtPoint
* Sets a point for exposure.
* @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
*/
public func exposeAtPoint(point: CGPoint) {
let device: AVCaptureDevice = activeCamera
let exposureMode: AVCaptureExposureMode = .ContinuousAutoExposure
if device.exposurePointOfInterestSupported && device.isExposureModeSupported(exposureMode) {
var error: NSError?
do {
try device.lockForConfiguration()
device.exposurePointOfInterest = point
device.exposureMode = exposureMode
if device.isExposureModeSupported(.Locked) {
device.addObserver(self, forKeyPath: "adjustingExposure", options: .New, context: &CaptureAdjustingExposureContext)
}
device.unlockForConfiguration()
} catch let error1 as NSError {
error = error1
delegate?.captureDeviceConfigurationFailed?(self, error: error)
}
}
}
/**
* override to set observeValueForKeyPath and handle exposure observance.
* @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
*/
override public func observeValueForKeyPath(keyPath: String?, ofObject object: AnyObject?, change: [String : AnyObject]?, context: UnsafeMutablePointer<Void>) {
if context == &CaptureAdjustingExposureContext {
let device: AVCaptureDevice = object as! AVCaptureDevice
if device.adjustingExposure && device.isExposureModeSupported(.Locked) {
object!.removeObserver(self, forKeyPath: "adjustingExposure", context: &CaptureAdjustingExposureContext)
dispatch_async(queue) {
var error: NSError?
do {
try device.lockForConfiguration()
device.unlockForConfiguration()
} catch let e as NSError {
error = e
self.delegate?.captureDeviceConfigurationFailed?(self, error: error)
} catch {
fatalError()
}
}
} else {
super.observeValueForKeyPath(keyPath, ofObject: object, change: change, context: context)
}
}
}
/**
* resetFocusAndExposureModes
* Resets to default configuration for device focus and exposure mode.
* @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
*/
public func resetFocusAndExposureModes() {
let device: AVCaptureDevice = activeCamera
let exposureMode: AVCaptureExposureMode = .ContinuousAutoExposure
let canResetExposure: Bool = device.focusPointOfInterestSupported && device.isExposureModeSupported(exposureMode)
let focusMode: AVCaptureFocusMode = .ContinuousAutoFocus
let canResetFocus: Bool = device.focusPointOfInterestSupported && device.isFocusModeSupported(focusMode)
let centerPoint: CGPoint = CGPointMake(0.5, 0.5)
var error: NSError?
do {
try device.lockForConfiguration()
if canResetFocus {
device.focusMode = focusMode
device.focusPointOfInterest = centerPoint
}
if canResetExposure {
device.exposureMode = exposureMode
device.exposurePointOfInterest = centerPoint
}
device.unlockForConfiguration()
} catch let error1 as NSError {
error = error1
delegate?.captureDeviceConfigurationFailed?(self, error: error)
}
}
/**
* captureStillImage
* Captures the image and write the photo to the user's asset library.
* @delegate If the success, the capture(capture: Capture!, assetLibraryDidWrite image: UIImage!) is called.
* @delegate If failure, capture(capture: Capture!, assetLibraryWriteFailed error: NSError!) is called.
*/
public func captureStillImage() {
let connection: AVCaptureConnection = imageOutput.connectionWithMediaType(AVMediaTypeVideo)
if connection.supportsVideoOrientation {
connection.videoOrientation = currentVideoOrientation
}
imageOutput.captureStillImageAsynchronouslyFromConnection(connection) { (sampleBuffer: CMSampleBufferRef?, error: NSError?) in
if nil == sampleBuffer {
self.delegate?.captureAsetLibraryWriteFailed?(self, error: error)
} else {
let imageData: NSData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(sampleBuffer)
let image: UIImage = UIImage(data: imageData)!
self.writeImageToAssetsLibrary(image)
}
}
}
/**
* isRecording
* Checkts whether the device is currently recording.
* @return A boolean of the result, true if yes, false otherwise.
*/
public var isRecording: Bool {
get {
return movieOutput.recording
}
}
/**
* startRecording
* If the device is not currently recording, this starts the movie recording.
* @delegate If the configuration fails, the capture(capture: Capture!, deviceConfigurationFailed error: NSError!) is called.
*/
public func startRecording() {
if !isRecording {
let connection: AVCaptureConnection = movieOutput.connectionWithMediaType(AVMediaTypeVideo)
if connection.supportsVideoOrientation {
connection.videoOrientation = currentVideoOrientation
}
if connection.supportsVideoStabilization {
connection.preferredVideoStabilizationMode = .Auto
}
let device: AVCaptureDevice = activeCamera
if device.smoothAutoFocusSupported {
var error: NSError?
do {
try device.lockForConfiguration()
device.smoothAutoFocusEnabled = false
device.unlockForConfiguration()
} catch let error1 as NSError {
error = error1
delegate?.captureDeviceConfigurationFailed?(self, error: error)
}
}
movieOutputURL = uniqueURL
movieOutput.startRecordingToOutputFileURL(movieOutputURL, recordingDelegate: self)
}
}
/**
* stopRecording
* If the device is currently recoring, this stops the movie recording.
*/
public func stopRecording() {
if isRecording {
movieOutput.stopRecording()
}
}
/**
* recordedDuration
* Retrieves the movie recorded duration.
* @return A CMTime value.
*/
public var recordedDuration: CMTime {
get {
return movieOutput.recordedDuration
}
}
/**
* currentVideoOrientation
* Retrieves the current orientation of the device.
* @return A AVCaptureVideoOrientation value, [Portrait, LandscapeLeft, PortraitUpsideDown, LandscapeRight].
*/
public var currentVideoOrientation: AVCaptureVideoOrientation {
var orientation: AVCaptureVideoOrientation?
switch UIDevice.currentDevice().orientation {
case .Portrait:
orientation = .Portrait
break
case .LandscapeRight:
orientation = .LandscapeLeft
break
case .PortraitUpsideDown:
orientation = .PortraitUpsideDown
break
default:
orientation = .LandscapeRight
}
return orientation!
}
/**
* uniqueURL
* A unique URL generated for the movie video.
* @return An optional NSURL value.
*/
private var uniqueURL: NSURL? {
let fileManager: NSFileManager = NSFileManager.defaultManager()
let tempDirectoryTemplate: String = (NSTemporaryDirectory() as NSString).stringByAppendingPathComponent("FocusLibrary")
do {
try fileManager.createDirectoryAtPath(tempDirectoryTemplate, withIntermediateDirectories: true, attributes: nil)
return NSURL.fileURLWithPath(tempDirectoryTemplate + "/test.mov")
} catch {}
return nil
}
/**
* postAssetLibraryNotification
* Fires an asynchronous call to the capture(capture: Capture!, assetLibraryDidWrite image: UIImage!) delegate.
* @param image: UIImage!
* @delegate An asynchronous call to capture(capture: Capture!, assetLibraryDidWrite image: UIImage!) delegate.
*/
private func postAssetLibraryNotification(image: UIImage!) {
dispatch_async(queue) {
self.delegate?.capture?(self, assetLibraryDidWrite: image)
}
}
/**
* writeImageToAssetsLibrary
* Writes the image file to the user's asset library.
* @param image: UIImage!
* @delegate If successful, an asynchronous call to capture(capture: Capture!, assetLibraryDidWrite image: UIImage!) delegate.
* @delegate If failure, capture(capture: Capture!, assetLibraryWriteFailed error: NSError!) is called.
*/
private func writeImageToAssetsLibrary(image: UIImage) {
let library: ALAssetsLibrary = ALAssetsLibrary()
library.writeImageToSavedPhotosAlbum(image.CGImage, orientation: ALAssetOrientation(rawValue: image.imageOrientation.rawValue)!) { (path: NSURL!, error: NSError?) -> Void in
if nil == error {
self.postAssetLibraryNotification(image)
} else {
self.delegate?.captureAsetLibraryWriteFailed?(self, error: error)
}
}
}
/**
* writeVideoToAssetsLibrary
* Writes the video file to the user's asset library.
* @param videoURL: NSURL!
* @delegate If successful, an asynchronous call to capture(capture: Capture!, assetLibraryDidWrite image: UIImage!) delegate.
* @delegate If failure, capture(capture: Capture!, assetLibraryWriteFailed error: NSError!) is called.
*/
private func writeVideoToAssetsLibrary(videoURL: NSURL!) {
let library: ALAssetsLibrary = ALAssetsLibrary()
if library.videoAtPathIsCompatibleWithSavedPhotosAlbum(videoURL) {
library.writeVideoAtPathToSavedPhotosAlbum(videoURL) { (path: NSURL!, error: NSError?) in
if nil == error {
self.generateThumbnailForVideoAtURL(videoURL)
} else {
self.delegate?.captureAsetLibraryWriteFailed?(self, error: error)
}
}
}
}
/**
* generateThumbnailForVideoAtURL
* Generates a thumbnail for the video URL specified.
* @param videoURL: NSURL!
* @delegate An asynchronous call to capture(capture: Capture!, assetLibraryDidWrite image: UIImage!) delegate.
*/
private func generateThumbnailForVideoAtURL(videoURL: NSURL!) {
dispatch_async(queue) {
do {
let asset: AVAsset = AVAsset(URL: videoURL)
let imageGenerator: AVAssetImageGenerator = AVAssetImageGenerator(asset: asset)
imageGenerator.maximumSize = CGSizeMake(100, 0)
imageGenerator.appliesPreferredTrackTransform = true
let imageRef: CGImageRef = try imageGenerator.copyCGImageAtTime(kCMTimeZero, actualTime: nil)
let image: UIImage = UIImage(CGImage: imageRef)
dispatch_async(dispatch_get_main_queue()) {
self.postAssetLibraryNotification(image)
}
} catch {}
}
}
/**
* delegate method for capturing video file.
* @delegate If successful, an asynchronous call to capture(capture: Capture!, assetLibraryDidWrite image: UIImage!) delegate.
* @delegate If failure, capture(capture: Capture!, mediaCaptureFailed error: NSError!) is called.
*/
public func captureOutput(captureOutput: AVCaptureFileOutput!, didFinishRecordingToOutputFileAtURL outputFileURL: NSURL!, fromConnections connections: [AnyObject]!, error: NSError!) {
if nil == error {
writeVideoToAssetsLibrary(movieOutputURL!.copy() as! NSURL)
} else {
delegate?.captureMediaCaptureFailed?(self, error: error)
}
movieOutputURL = nil
}
}
\ No newline at end of file
Source/CapturePreview.swift
////
//// Copyright (C) 2015 GraphKit, Inc. <http://graphkit.io> and other GraphKit contributors.
////
//// This program is free software: you can redistribute it and/or modify
//// it under the terms of the GNU Affero General Public License as published
//// by the Free Software Foundation, either version 3 of the License, or
//// (at your option) any later version.
////
//// This program is distributed in the hope that it will be useful,
//// but WITHOUT ANY WARRANTY; without even the implied warranty of
//// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
//// GNU Affero General Public License for more details.
////
//// You should have received a copy of the GNU Affero General Public License
//// along with this program located at the root of the software package
//// in a file called LICENSE. If not, see <http://www.gnu.org/licenses/>.
////
//
//import UIKit
//import AVFoundation
// Copyright (C) 2015 GraphKit, Inc. <http://graphkit.io> and other GraphKit contributors.
//
//@objc(PreviewDelegate)
//public protocol PreviewDelegate {
// optional func previewTappedToFocusAt(preview: Preview, point: CGPoint)
// optional func previewTappedToExposeAt(preview: Preview, point: CGPoint)
// optional func previewTappedToReset(preview: Preview, focus: UIView, exposure: UIView)
//}
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
//public class Preview: UIView {
// /**
// :name: boxBounds
// :description: A static property that sets the initial size of the focusBox and exposureBox properties.
// */
// static public var boxBounds: CGRect = CGRectMake(0, 0, 150, 150)
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// /**
// :name: delegate
// :description: An optional instance of PreviewDelegate to handle events that are triggered during various
// stages of engagement.
// */
// public weak var delegate: PreviewDelegate?
// You should have received a copy of the GNU Affero General Public License
// along with this program located at the root of the software package
// in a file called LICENSE. If not, see <http://www.gnu.org/licenses/>.
//
// /**
// :name: tapToFocusEnabled
// :description: A mutator and accessor that enables and disables tap to focus gesture.
// */
// public var tapToFocusEnabled: Bool {
// get {
// return singleTapRecognizer!.enabled
// }
// set(value) {
// singleTapRecognizer!.enabled = value
// }
// }
//
// /**
// :name: tapToExposeEnabled
// :description: A mutator and accessor that enables and disables tap to expose gesture.
// */
// public var tapToExposeEnabled: Bool {
// get {
// return doubleTapRecognizer!.enabled
// }
// set(value) {
// doubleTapRecognizer!.enabled = value
// }
// }
//
// //
// // override for layerClass
// //
// override public class func layerClass() -> AnyClass {
// return AVCaptureVideoPreviewLayer.self
// }
//
// /**
// :name: session
// :description: A mutator and accessor for the preview AVCaptureSession value.
// */
// public var session: AVCaptureSession {
// get {
// return (layer as! AVCaptureVideoPreviewLayer).session
// }
// set(value) {
// (layer as! AVCaptureVideoPreviewLayer).session = value
// }
// }
//
// /**
// :name: focusBox
// :description: An optional UIView for the focusBox animation. This is used when the
// tapToFocusEnabled property is set to true.
// */
// public var focusBox: UIView?
//
// /**
// :name: exposureBox
// :description: An optional UIView for the exposureBox animation. This is used when the
// tapToExposeEnabled property is set to true.
// */
// public var exposureBox: UIView?
//
// //
// // :name: singleTapRecognizer
// // :description: Gesture recognizer for single tap.
// //
// private var singleTapRecognizer: UITapGestureRecognizer?
//
// //
// // :name: doubleTapRecognizer
// // :description: Gesture recognizer for double tap.
// //
// private var doubleTapRecognizer: UITapGestureRecognizer?
//
// //
// // :name: doubleDoubleTapRecognizer
// // :description: Gesture recognizer for double/double tap.
// //
// private var doubleDoubleTapRecognizer: UITapGestureRecognizer?
//
// required public init?(coder aDecoder: NSCoder) {
// super.init(coder: aDecoder)
// prepareView()
// }
//
// public override init(frame: CGRect) {
// super.init(frame: frame)
// prepareView()
// }
//
// public init() {
// super.init(frame: CGRectZero)
// translatesAutoresizingMaskIntoConstraints = false
// prepareView()
// }
//
// //
// // :name: handleSingleTap
// //
// internal func handleSingleTap(recognizer: UIGestureRecognizer) {
// let point: CGPoint = recognizer.locationInView(self)
// runBoxAnimationOnView(focusBox, point: point)
// delegate?.previewTappedToFocusAt?(self, point: captureDevicePointForPoint(point))
// }
//
// //
// // :name: handleDoubleTap
// //
// internal func handleDoubleTap(recognizer: UIGestureRecognizer) {
// let point: CGPoint = recognizer.locationInView(self)
// runBoxAnimationOnView(exposureBox, point: point)
// delegate?.previewTappedToExposeAt?(self, point: captureDevicePointForPoint(point))
// }
//
// //
// // :name: handleDoubleDoubleTap
// //
// internal func handleDoubleDoubleTap(recognizer: UIGestureRecognizer) {
// runResetAnimation()
// }
//
// //
// // :name: prepareView
// // :description: Common setup for view.
// //
// private func prepareView() {
// let captureLayer: AVCaptureVideoPreviewLayer = layer as! AVCaptureVideoPreviewLayer
// captureLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
//
// singleTapRecognizer = UITapGestureRecognizer(target: self, action: "handleSingleTap:")
// singleTapRecognizer!.numberOfTapsRequired = 1
//
// doubleTapRecognizer = UITapGestureRecognizer(target: self, action: "handleDoubleTap:")
// doubleTapRecognizer!.numberOfTapsRequired = 2
//
// doubleDoubleTapRecognizer = UITapGestureRecognizer(target: self, action: "handleDoubleDoubleTap:")
// doubleDoubleTapRecognizer!.numberOfTapsRequired = 2
// doubleDoubleTapRecognizer!.numberOfTouchesRequired = 2
//
// addGestureRecognizer(singleTapRecognizer!)
// addGestureRecognizer(doubleTapRecognizer!)
// addGestureRecognizer(doubleDoubleTapRecognizer!)
// singleTapRecognizer!.requireGestureRecognizerToFail(doubleTapRecognizer!)
//
// focusBox = viewWithColor(.redColor())
// exposureBox = viewWithColor(.blueColor())
// addSubview(focusBox!)
// addSubview(exposureBox!)
// }
//
// //
// // :name: viewWithColor
// // :description: Initializes a UIView with a set UIColor.
// //
// private func viewWithColor(color: UIColor) -> UIView {
// let view: UIView = UIView(frame: Preview.boxBounds)
// view.backgroundColor = MaterialTheme.clear.color
// view.layer.borderColor = color.CGColor
// view.layer.borderWidth = 5
// view.hidden = true
// return view
// }
//
// //
// // :name: runBoxAnimationOnView
// // :description: Runs the animation used for focusBox and exposureBox on single and double
// // taps respectively at a given point.
// //
// private func runBoxAnimationOnView(view: UIView!, point: CGPoint) {
// view.center = point
// view.hidden = false
// UIView.animateWithDuration(0.15, delay: 0, options: .CurveEaseInOut, animations: { _ in
// view.layer.transform = CATransform3DMakeScale(0.5, 0.5, 1)
// }) { _ in
// let delayInSeconds: Double = 0.5
// let popTime: dispatch_time_t = dispatch_time(DISPATCH_TIME_NOW, Int64(delayInSeconds * Double(NSEC_PER_SEC)))
// dispatch_after(popTime, dispatch_get_main_queue()) {
// view.hidden = true
// view.transform = CGAffineTransformIdentity
// }
// }
// }
//
// //
// // :name: captureDevicePointForPoint
// // :description: Interprets the correct point from touch to preview layer.
// //
// private func captureDevicePointForPoint(point: CGPoint) -> CGPoint {
// let previewLayer: AVCaptureVideoPreviewLayer = layer as! AVCaptureVideoPreviewLayer
// return previewLayer.captureDevicePointOfInterestForPoint(point)
// }
//
// //
// // :name: runResetAnimation
// // :description: Executes the reset animation for focus and exposure.
// //
// private func runResetAnimation() {
// if !tapToFocusEnabled && !tapToExposeEnabled {
// return
// }
//
// let previewLayer: AVCaptureVideoPreviewLayer = layer as! AVCaptureVideoPreviewLayer
// let centerPoint: CGPoint = previewLayer.pointForCaptureDevicePointOfInterest(CGPointMake(0.5, 0.5))
// focusBox!.center = centerPoint
// exposureBox!.center = centerPoint
// exposureBox!.transform = CGAffineTransformMakeScale(1.2, 1.2)
// focusBox!.hidden = false
// exposureBox!.hidden = false
//
// UIView.animateWithDuration(0.15, delay: 0, options: .CurveEaseInOut, animations: { _ in
// self.focusBox!.layer.transform = CATransform3DMakeScale(0.5, 0.5, 1)
// self.exposureBox!.layer.transform = CATransform3DMakeScale(0.7, 0.7, 1)
// }) { _ in
// let delayInSeconds: Double = 0.5
// let popTime: dispatch_time_t = dispatch_time(DISPATCH_TIME_NOW, Int64(delayInSeconds * Double(NSEC_PER_SEC)))
// dispatch_after(popTime, dispatch_get_main_queue()) {
// self.focusBox!.hidden = true
// self.exposureBox!.hidden = true
// self.focusBox!.transform = CGAffineTransformIdentity
// self.exposureBox!.transform = CGAffineTransformIdentity
// self.delegate?.previewTappedToReset?(self, focus: self.focusBox!, exposure: self.exposureBox!)
// }
// }
// }
//}
import UIKit
import AVFoundation
@objc(PreviewDelegate)
public protocol PreviewDelegate {
optional func previewTappedToFocusAt(preview: Preview, point: CGPoint)
optional func previewTappedToExposeAt(preview: Preview, point: CGPoint)
optional func previewTappedToReset(preview: Preview, focus: UIView, exposure: UIView)
}
public class Preview: UIView {
/**
:name: boxBounds
:description: A static property that sets the initial size of the focusBox and exposureBox properties.
*/
static public var boxBounds: CGRect = CGRectMake(0, 0, 150, 150)
/**
:name: delegate
:description: An optional instance of PreviewDelegate to handle events that are triggered during various
stages of engagement.
*/
public weak var delegate: PreviewDelegate?
/**
:name: tapToFocusEnabled
:description: A mutator and accessor that enables and disables tap to focus gesture.
*/
public var tapToFocusEnabled: Bool {
get {
return singleTapRecognizer!.enabled
}
set(value) {
singleTapRecognizer!.enabled = value
}
}
/**
:name: tapToExposeEnabled
:description: A mutator and accessor that enables and disables tap to expose gesture.
*/
public var tapToExposeEnabled: Bool {
get {
return doubleTapRecognizer!.enabled
}
set(value) {
doubleTapRecognizer!.enabled = value
}
}
//
// override for layerClass
//
override public class func layerClass() -> AnyClass {
return AVCaptureVideoPreviewLayer.self
}
/**
:name: session
:description: A mutator and accessor for the preview AVCaptureSession value.
*/
public var session: AVCaptureSession {
get {
return (layer as! AVCaptureVideoPreviewLayer).session
}
set(value) {
(layer as! AVCaptureVideoPreviewLayer).session = value
}
}
/**
:name: focusBox
:description: An optional UIView for the focusBox animation. This is used when the
tapToFocusEnabled property is set to true.
*/
public var focusBox: UIView?
/**
:name: exposureBox
:description: An optional UIView for the exposureBox animation. This is used when the
tapToExposeEnabled property is set to true.
*/
public var exposureBox: UIView?
//
// :name: singleTapRecognizer
// :description: Gesture recognizer for single tap.
//
private var singleTapRecognizer: UITapGestureRecognizer?
//
// :name: doubleTapRecognizer
// :description: Gesture recognizer for double tap.
//
private var doubleTapRecognizer: UITapGestureRecognizer?
//
// :name: doubleDoubleTapRecognizer
// :description: Gesture recognizer for double/double tap.
//
private var doubleDoubleTapRecognizer: UITapGestureRecognizer?
required public init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
prepareView()
}
public override init(frame: CGRect) {
super.init(frame: frame)
prepareView()
}
public init() {
super.init(frame: CGRectZero)
translatesAutoresizingMaskIntoConstraints = false
prepareView()
}
//
// :name: handleSingleTap
//
internal func handleSingleTap(recognizer: UIGestureRecognizer) {
let point: CGPoint = recognizer.locationInView(self)
runBoxAnimationOnView(focusBox, point: point)
delegate?.previewTappedToFocusAt?(self, point: captureDevicePointForPoint(point))
}
//
// :name: handleDoubleTap
//
internal func handleDoubleTap(recognizer: UIGestureRecognizer) {
let point: CGPoint = recognizer.locationInView(self)
runBoxAnimationOnView(exposureBox, point: point)
delegate?.previewTappedToExposeAt?(self, point: captureDevicePointForPoint(point))
}
//
// :name: handleDoubleDoubleTap
//
internal func handleDoubleDoubleTap(recognizer: UIGestureRecognizer) {
runResetAnimation()
}
//
// :name: prepareView
// :description: Common setup for view.
//
private func prepareView() {
let captureLayer: AVCaptureVideoPreviewLayer = layer as! AVCaptureVideoPreviewLayer
captureLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
singleTapRecognizer = UITapGestureRecognizer(target: self, action: "handleSingleTap:")
singleTapRecognizer!.numberOfTapsRequired = 1
doubleTapRecognizer = UITapGestureRecognizer(target: self, action: "handleDoubleTap:")
doubleTapRecognizer!.numberOfTapsRequired = 2
doubleDoubleTapRecognizer = UITapGestureRecognizer(target: self, action: "handleDoubleDoubleTap:")
doubleDoubleTapRecognizer!.numberOfTapsRequired = 2
doubleDoubleTapRecognizer!.numberOfTouchesRequired = 2
addGestureRecognizer(singleTapRecognizer!)
addGestureRecognizer(doubleTapRecognizer!)
addGestureRecognizer(doubleDoubleTapRecognizer!)
singleTapRecognizer!.requireGestureRecognizerToFail(doubleTapRecognizer!)
focusBox = viewWithColor(.redColor())
exposureBox = viewWithColor(.blueColor())
addSubview(focusBox!)
addSubview(exposureBox!)
}
//
// :name: viewWithColor
// :description: Initializes a UIView with a set UIColor.
//
private func viewWithColor(color: UIColor) -> UIView {
let view: UIView = UIView(frame: Preview.boxBounds)
view.backgroundColor = MaterialTheme.clear.color
view.layer.borderColor = color.CGColor
view.layer.borderWidth = 5
view.hidden = true
return view
}
//
// :name: runBoxAnimationOnView
// :description: Runs the animation used for focusBox and exposureBox on single and double
// taps respectively at a given point.
//
private func runBoxAnimationOnView(view: UIView!, point: CGPoint) {
view.center = point
view.hidden = false
UIView.animateWithDuration(0.15, delay: 0, options: .CurveEaseInOut, animations: { _ in
view.layer.transform = CATransform3DMakeScale(0.5, 0.5, 1)
}) { _ in
let delayInSeconds: Double = 0.5
let popTime: dispatch_time_t = dispatch_time(DISPATCH_TIME_NOW, Int64(delayInSeconds * Double(NSEC_PER_SEC)))
dispatch_after(popTime, dispatch_get_main_queue()) {
view.hidden = true
view.transform = CGAffineTransformIdentity
}
}
}
//
// :name: captureDevicePointForPoint
// :description: Interprets the correct point from touch to preview layer.
//
private func captureDevicePointForPoint(point: CGPoint) -> CGPoint {
let previewLayer: AVCaptureVideoPreviewLayer = layer as! AVCaptureVideoPreviewLayer
return previewLayer.captureDevicePointOfInterestForPoint(point)
}
//
// :name: runResetAnimation
// :description: Executes the reset animation for focus and exposure.
//
private func runResetAnimation() {
if !tapToFocusEnabled && !tapToExposeEnabled {
return
}
let previewLayer: AVCaptureVideoPreviewLayer = layer as! AVCaptureVideoPreviewLayer
let centerPoint: CGPoint = previewLayer.pointForCaptureDevicePointOfInterest(CGPointMake(0.5, 0.5))
focusBox!.center = centerPoint
exposureBox!.center = centerPoint
exposureBox!.transform = CGAffineTransformMakeScale(1.2, 1.2)
focusBox!.hidden = false
exposureBox!.hidden = false
UIView.animateWithDuration(0.15, delay: 0, options: .CurveEaseInOut, animations: { _ in
self.focusBox!.layer.transform = CATransform3DMakeScale(0.5, 0.5, 1)
self.exposureBox!.layer.transform = CATransform3DMakeScale(0.7, 0.7, 1)
}) { _ in
let delayInSeconds: Double = 0.5
let popTime: dispatch_time_t = dispatch_time(DISPATCH_TIME_NOW, Int64(delayInSeconds * Double(NSEC_PER_SEC)))
dispatch_after(popTime, dispatch_get_main_queue()) {
self.focusBox!.hidden = true
self.exposureBox!.hidden = true
self.focusBox!.transform = CGAffineTransformIdentity
self.exposureBox!.transform = CGAffineTransformIdentity
self.delegate?.previewTappedToReset?(self, focus: self.focusBox!, exposure: self.exposureBox!)
}
}
}
}
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