val previewObservable = captureSessionConfiguredObservable
            .flatMap { cameraCaptureSession ->
                Timber.d("\tstartPreview")
                val previewBuilder = createCaptureRequestBuilder(cameraCaptureSession.device)
                cameraRxWrapper.getCaptureSessionDataObservable(cameraCaptureSession, previewBuilder.build(), backgroundExecutor.handler!!)
            }
            .share()

        Observables
            .combineLatest(previewObservable, onPauseSubject) { state, _ -> state }