Add multimonitor support

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

import Foundation
import ReplayKit

extension CVImageBuffer {
  
  static let sharedContext = 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)))
  }
}