47 lines
1.2 KiB
Swift
47 lines
1.2 KiB
Swift
//
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// File.swift
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//
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//
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// Created by Igor Ferreira on 05/04/2022.
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//
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import Foundation
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import ImageIO
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public actor CGImageSourceFrameSequence: AsyncSequence {
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public typealias Element = ImageFrame
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public enum LoadError: Error {
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case invalidData
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case emptyData
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}
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public let source: CGImageSource
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public init(data: Data) throws {
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guard let source = CGImageSourceCreateWithData(data as CFData, nil) else {
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throw LoadError.invalidData
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}
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switch CGImageSourceGetStatus(source) {
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case .statusComplete: break
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case .statusReadingHeader: break
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case .statusIncomplete: throw LoadError.emptyData
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case .statusInvalidData: throw LoadError.invalidData
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case .statusUnexpectedEOF: throw LoadError.invalidData
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case .statusUnknownType: throw LoadError.invalidData
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@unknown default: throw LoadError.invalidData
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}
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self.init(source: source)
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}
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public init(source: CGImageSource) {
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self.source = source
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}
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nonisolated public func makeAsyncIterator() -> CGImageSourceIterator {
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CGImageSourceIterator(source: source)
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}
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}
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