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[rbdr/captura] / Captura / Core Extensions / CVImageBuffer+cgImage.swift
1 /*
2 Copyright (C) 2024 Rubén Beltrán del Río
3
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see https://captura.tranquil.systems.
16 */
17 import Foundation
18 import ReplayKit
19
20 extension CVImageBuffer {
21
22 private static let contextQueue = DispatchQueue(label: "com.example.contextQueue")
23 static let sharedContext: CIContext = {
24 return CIContext()
25 }()
26
27 var cgImage: CGImage? {
28 var result: CGImage?
29 CVImageBuffer.contextQueue.sync {
30 let ciImage = CIImage(cvImageBuffer: self)
31 let width = CVPixelBufferGetWidth(self)
32 let height = CVPixelBufferGetHeight(self)
33 result = CVImageBuffer.sharedContext.createCGImage(ciImage, from: CGRect(x: 0, y: 0, width: width, height: height))
34 }
35 return result
36 }
37 }