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VTCompressionOutputCallback

video_toolbox::compression_session

Type Alias VTCompressionOutputCallback 

Source 
pub type VTCompressionOutputCallback = extern "C" fn(outputCallbackRefCon: *mut c_void, sourceFrameRefCon: *mut c_void, status: OSStatus, infoFlags: VTEncodeInfoFlags, sampleBuffer: CMSampleBufferRef);