Swift 如何将CVImageBuffer转换为非托管<；CVImageBuffer>；？

我在Swift中有此代码，但得到一个错误：CVImageBuffer不能转换为非托管

  func getTextureFromSampleBuffer(sampleBuffer: CMSampleBuffer!) -> GLuint {
    cleanupVideoTextures()
   var unmanagedImageBuffer: Unmanaged<CVImageBuffer> = CMSampleBufferGetImageBuffer(sampleBuffer)  // Here get the error
    var imageBuffer = unmanagedImageBuffer.takeUnretainedValue()
    var opaqueImageBuffer = unmanagedImageBuffer.toOpaque()

func getTextureFromSampleBuffer（sampleBuffer:CMSampleBuffer！）->GLuint{
清理视频纹理（）
var unmanagedImageBuffer:Unmanaged=CMSampleBufferGetImageBuffer（sampleBuffer）//此处获取错误
var imageBuffer=unmanagedImageBuffer.takeUnrepainedValue（）
var opaqueImageBuffer=unmanagedImageBuffer.toOpaque（）

我怎么能投这个

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谢谢！

CMSampleBufferGetImageBuffer（）

不再接受非托管对象了？也许这已经改变了 在测试版之间）。您可以替换

var unmanagedImageBuffer: Unmanaged<CVImageBuffer> = CMSampleBufferGetImageBuffer(sampleBuffer)  // Here get the error
var imageBuffer = unmanagedImageBuffer.takeUnretainedValue()

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但是需要opaqueImageBuffer for:var cameraFrame:CVPixelBuffer=Unmanaged.fromOpaque（opaqueImageBuffer.takeUnretainedValue（）textureWidth=CVPixelBufferGetWidth（cameraFrame）textureHight=CVPixelBufferGetHeight（cameraFrame）@user3745888:Try

var imageBuffer=CMSampleBufferGetImageBuffer（sampleBuffer）作为CVPixelBuffer

和

textureHeight=CVPixelBufferGetHeight（imageBuffer）

。

var imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer)