pub unsafe extern "C-unwind" fn CMVideoFormatDescriptionGetExtensionKeysCommonWithImageBuffers() -> CFRetained<CFArray>CMFormatDescription only.Expand description
Returns an array of the keys that are used both as CMVideoFormatDescription extensions and CVImageBuffer attachments and attributes.
When specifying a CMFormatDescription for a CMSampleBuffer, the format description must be consistent with formatting information attached to the CVImageBuffer. The width, height, and codecType must match (for CVPixelBuffers the codec type is given by CVPixelBufferGetPixelFormatType(pixelBuffer); for other CVImageBuffers, the codecType must be 0). The format description extensions must match the image buffer attachments for all the keys in the list returned by this function (if absent in either they must be absent in both).
Currently, the list is:
kCMFormatDescriptionExtension_CleanAperture kCMFormatDescriptionExtension_FieldCount kCMFormatDescriptionExtension_FieldDetail kCMFormatDescriptionExtension_PixelAspectRatio kCMFormatDescriptionExtension_ColorPrimaries kCMFormatDescriptionExtension_TransferFunction kCMFormatDescriptionExtension_GammaLevel kCMFormatDescriptionExtension_YCbCrMatrix kCMFormatDescriptionExtension_ICCProfile kCMFormatDescriptionExtension_ChromaLocationTopField kCMFormatDescriptionExtension_ChromaLocationBottomField kCMFormatDescriptionExtension_MasteringDisplayColorVolume kCMFormatDescriptionExtension_ContentLightLevelInfo