Swift CMImageBuffer或CVImageBuffer的深度副本

嗨，我目前正在开发一个应用程序，它需要捕获视频，同时应该能够拍摄帧来混合它们。 我遇到的问题是，我的帧来自：

func captureOutput( captureOutput: AVCaptureOutput!, didOutputSampleBuffer sampleBuffer: CMSampleBuffer!, fromConnection connection: AVCaptureConnection! ) 仅创建浅拷贝，无助于释放原始imageBuffer

所以我的问题是：如何创建

CMSmapleBuffer

或

CVImageBuffer

的完整深度副本？ 我想使用：

func CMSampleBufferCreate( _ allocator: CFAllocator?, _ dataBuffer: CMBlockBuffer?, _ dataReady: Bool, _ makeDataReadyCallback: CMSampleBufferMakeDataReadyCallback?, _ makeDataReadyRefcon: UnsafeMutablePointer, _ formatDescription: CMFormatDescription?, _ numSamples: CMItemCount, _ numSampleTimingEntries: CMItemCount, _ sampleTimingArray: UnsafePointer, _ numSampleSizeEntries: CMItemCount, _ sampleSizeArray: UnsafePointer, _ sBufOut: UnsafeMutablePointer ) -> OSStatus func CMSampleBufferCreate( _分配器：CFAllocator？， _数据缓冲区：CMBClockBuffer？， _数据就绪：布尔， _MakedDataReadyCallback:cmSampleBufferMakedDataReadyCallback？， _MakedDataReadyRefcon:UnsafemeutablePointer， _formatDescription:CMFormatDescription？， _numSamples:CMItemCount， _numSampleTimingEntries:CMItemCount， _sampleTimingArray:UnsafePointer， _numSampleSizeEntries:CMItemCount， _sampleSizeArray:UnsafePointer， _sBufOut:unsafemeutablepointer )->骨状态 但是这个函数有点过于强大，我不知道从哪里获得所有属性。 我相信我可以从给定的

CMSmapleBuffer

中获得很多

几天来我一直在寻找解决方案。 如果您需要更多的上下文，请随时询问。

---

我希望有人能帮忙。

解决了吗。。。。。。。。解决了。。。。。。。。 func CMSampleBufferCreate( _ allocator: CFAllocator?, _ dataBuffer: CMBlockBuffer?, _ dataReady: Bool, _ makeDataReadyCallback: CMSampleBufferMakeDataReadyCallback?, _ makeDataReadyRefcon: UnsafeMutablePointer, _ formatDescription: CMFormatDescription?, _ numSamples: CMItemCount, _ numSampleTimingEntries: CMItemCount, _ sampleTimingArray: UnsafePointer, _ numSampleSizeEntries: CMItemCount, _ sampleSizeArray: UnsafePointer, _ sBufOut: UnsafeMutablePointer ) -> OSStatus