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https://github.com/samsonjs/SwiftyCam.git
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81 lines
3.1 KiB
Swift
81 lines
3.1 KiB
Swift
/*Copyright (c) 2016, Andrew Walz.
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Redistribution and use in source and binary forms, with or without modification,are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
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BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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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. */
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import UIKit
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import AVFoundation
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/// A function to specifty the Preview Layer's videoGravity. Indicates how the video is displayed within a player layer’s bounds rect.
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public enum SwiftyCamVideoGravity {
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/**
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- Specifies that the video should be stretched to fill the layer’s bounds
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- Corrsponds to `AVLayerVideoGravityResize`
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*/
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case resize
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/**
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- Specifies that the player should preserve the video’s aspect ratio and fit the video within the layer’s bounds.
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- Corresponds to `AVLayerVideoGravityResizeAspect`
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*/
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case resizeAspect
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/**
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- Specifies that the player should preserve the video’s aspect ratio and fill the layer’s bounds.
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- Correponds to `AVLayerVideoGravityResizeAspectFill`
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*/
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case resizeAspectFill
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}
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class PreviewView: UIView {
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private var gravity: SwiftyCamVideoGravity = .resizeAspect
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init(frame: CGRect, videoGravity: SwiftyCamVideoGravity) {
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gravity = videoGravity
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super.init(frame: frame)
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self.backgroundColor = UIColor.black
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}
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required init?(coder aDecoder: NSCoder) {
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super.init(coder: aDecoder)
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}
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var videoPreviewLayer: AVCaptureVideoPreviewLayer {
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let previewlayer = layer as! AVCaptureVideoPreviewLayer
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switch gravity {
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case .resize:
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previewlayer.videoGravity = AVLayerVideoGravity.resize
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case .resizeAspect:
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previewlayer.videoGravity = AVLayerVideoGravity.resizeAspect
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case .resizeAspectFill:
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previewlayer.videoGravity = AVLayerVideoGravity.resizeAspectFill
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}
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return previewlayer
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}
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var session: AVCaptureSession? {
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get {
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return videoPreviewLayer.session
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}
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set {
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videoPreviewLayer.session = newValue
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}
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}
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// MARK: UIView
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override class var layerClass : AnyClass {
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return AVCaptureVideoPreviewLayer.self
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}
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}
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