Add license and contributing

[rbdr/captura] / Captura / Core Extensions / CVImageBuffer+cgImage.swift

diff --git a/Captura/Core Extensions/CVImageBuffer+cgImage.swift b/Captura/Core Extensions/CVImageBuffer+cgImage.swift
index f8958f22eb5a89ab956abba7c784faf9560ec92f..eb62e7aefeffd26ff7ee75e767d2c94c687443cf 100644 (file)
--- a/Captura/Core Extensions/CVImageBuffer+cgImage.swift
+++ b/Captura/Core Extensions/CVImageBuffer+cgImage.swift
@@ -1,12 +1,37 @@
+/*
+ Copyright (C) 2024 Rubén Beltrán del Río
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see https://captura.tranquil.systems.
+ */
 import Foundation
 import ReplayKit
 
 extension CVImageBuffer {
   
-  static let sharedContext = CIContext()
+  private static let contextQueue = DispatchQueue(label: "com.example.contextQueue")
+  static let sharedContext: CIContext = {
+          return CIContext()
+  }()
   
   var cgImage: CGImage? {
-    let ciImage = CIImage(cvImageBuffer: self)
-    return CVImageBuffer.sharedContext.createCGImage(ciImage, from: CGRect(x: 0, y: 0, width: CVPixelBufferGetWidth(self), height: CVPixelBufferGetHeight(self)))
+    var result: CGImage?
+    CVImageBuffer.contextQueue.sync {
+      let ciImage = CIImage(cvImageBuffer: self)
+      let width = CVPixelBufferGetWidth(self)
+      let height = CVPixelBufferGetHeight(self)
+      result = CVImageBuffer.sharedContext.createCGImage(ciImage, from: CGRect(x: 0, y: 0, width: width, height: height))
+    }
+    return result
   }
 }