aac1

private fun startCamera() {

    ...

    // Add this before CameraX.bindToLifecycle

    // Setup image analysis pipeline that computes average pixel luminance
    val analyzerConfig = ImageAnalysisConfig.Builder().apply {
        // Use a worker thread for image analysis to prevent glitches
        val analyzerThread = HandlerThread(
            "LuminosityAnalysis").apply { start() }
        setCallbackHandler(Handler(analyzerThread.looper))
        // In our analysis, we care more about the latest image than
        // analyzing *every* image
        setImageReaderMode(
            ImageAnalysis.ImageReaderMode.ACQUIRE_LATEST_IMAGE)
    }.build()

    // Build the image analysis use case and instantiate our analyzer
    val analyzerUseCase = ImageAnalysis(analyzerConfig).apply {
        analyzer = LuminosityAnalyzer()
    }

    // Bind use cases to lifecycle
    // If Android Studio complains about "this" being not a LifecycleOwner
    // try rebuilding the project or updating the appcompat dependency to
    // version 1.1.0 or higher.
    CameraX.bindToLifecycle(this, preview, imageCapture)
}