iEventProvider
EGLDisplay/EGLStreamKHR
ISensorPrivateMetadataRequest->setMetadataEnable(True)
captureSession
iBufferOutputStream
iEGLOutputStreamSettings->setMetadataEnable(True)
iSensorPrivateMetadata is not NullPtr
IArgusCaptureMetadata
iRequest->setEnableIspStage(true)
OutputStreamSettings(STREAM_TYPE_BUFFER)
iEventCaptureComplete
CaptureMetadata
iBufferOutputStreamSettings
EGL：：frame
acquireBuffer
OutputStream
event/iEvent
ICaptureMetadata
queue/iQueue
ISensorPrivateMetadata
iBuffer
EGL：：metadataContainer
