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Demo/Demo/Kingfisher-Demo/ViewControllers/AVAssetImageGeneratorViewController.swift
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|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| // | ||
| // AVAssetImageGeneratorViewController.swift | ||
| // Kingfisher | ||
| // | ||
| // Created by onevcat on 2020/08/09. | ||
| // | ||
| // Copyright (c) 2020 Wei Wang <[email protected]> | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
|
|
||
| import UIKit | ||
| import AVKit | ||
| import Kingfisher | ||
|
|
||
| class AVAssetImageGeneratorViewController: UIViewController { | ||
| @IBOutlet weak var imageView: UIImageView! | ||
|
|
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| override func viewDidLoad() { | ||
| super.viewDidLoad() | ||
|
|
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| let url = URL(string: "https://file-examples-com.github.io/uploads/2017/04/file_example_MP4_1280_10MG.mp4")! | ||
| let asset = AVAsset(url: url) | ||
| let generator = AVAssetImageGenerator(asset: asset) | ||
| let provider = AVAssetImageDataProvider( | ||
| assetImageGenerator: generator, | ||
| time: CMTime(seconds: 14, preferredTimescale: 1) | ||
| ) | ||
| imageView.kf.setImage(with: provider) { r in | ||
| print(r) | ||
| } | ||
| } | ||
| } |
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94 changes: 94 additions & 0 deletions
94
Sources/General/ImageSource/AVAssetImageDataProvider.swift
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| // | ||
| // AVAssetImageDataProvider.swift | ||
| // Kingfisher | ||
| // | ||
| // Created by onevcat on 2020/08/09. | ||
| // | ||
| // Copyright (c) 2020 Wei Wang <[email protected]> | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
|
|
||
| import Foundation | ||
| import AVKit | ||
| import MobileCoreServices | ||
|
|
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| public struct AVAssetImageDataProvider: ImageDataProvider { | ||
|
|
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| public enum AVAssetImageDataProviderError: Error { | ||
| case userCancelled | ||
| case invalidImage(_ image: CGImage?) | ||
| } | ||
|
|
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| public let assetImageGenerator: AVAssetImageGenerator | ||
| public let time: CMTime | ||
|
|
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| private var internalKey: String { | ||
| return (assetImageGenerator.asset as? AVURLAsset)?.url.absoluteString ?? UUID().uuidString | ||
| } | ||
|
|
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| public var cacheKey: String { | ||
| return "\(internalKey)_\(time.value)" | ||
| } | ||
|
|
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| public init(assetImageGenerator: AVAssetImageGenerator, time: CMTime) { | ||
| self.assetImageGenerator = assetImageGenerator | ||
| self.time = time | ||
| } | ||
|
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| public init(assetURL: URL, time: CMTime) { | ||
| let asset = AVAsset(url: assetURL) | ||
| let generator = AVAssetImageGenerator(asset: asset) | ||
| self.init(assetImageGenerator: generator, time: time) | ||
| } | ||
|
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| public func data(handler: @escaping (Result<Data, Error>) -> Void) { | ||
| assetImageGenerator.generateCGImagesAsynchronously(forTimes: [NSValue(time: time)]) { | ||
| (requestedTime, image, imageTime, result, error) in | ||
| if let error = error { | ||
| handler(.failure(error)) | ||
| return | ||
| } | ||
|
|
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| if result == .cancelled { | ||
| handler(.failure(AVAssetImageDataProviderError.userCancelled)) | ||
| return | ||
| } | ||
|
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| guard let cgImage = image, let data = cgImage.jpegData else { | ||
| handler(.failure(AVAssetImageDataProviderError.invalidImage(image))) | ||
| return | ||
| } | ||
|
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| handler(.success(data)) | ||
| } | ||
| } | ||
| } | ||
|
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| extension CGImage { | ||
| var jpegData: Data? { | ||
| guard let mutableData = CFDataCreateMutable(nil, 0), | ||
| let destination = CGImageDestinationCreateWithData(mutableData, kUTTypeJPEG, 1, nil) | ||
| else { | ||
| return nil | ||
| } | ||
| CGImageDestinationAddImage(destination, self, nil) | ||
| guard CGImageDestinationFinalize(destination) else { return nil } | ||
| return mutableData as Data | ||
| } | ||
| } |