I want to use the seekbar to zoom in and out of the camera from zxing

private fun setCameraZoom(zoomLevel: Float) {
        if (!isFrontCamera && ::captureRequestBuilder.isInitialized && ::cameraCaptureSession.isInitialized) {
            val cameraManager = requireActivity().getSystemService(android.content.Context.CAMERA_SERVICE) as CameraManager
            val cameraId = getBackCameraId()
            val cameraCharacteristics = cameraManager.getCameraCharacteristics(cameraId)
            val maxZoom = cameraCharacteristics.get(CameraCharacteristics.SCALER_AVAILABLE_MAX_DIGITAL_ZOOM)
            ?: 1f

            // ... (tính toán zoomLevel và getZoomRect)
            val clampedZoomLevel = max(1f, min(zoomLevel, maxZoom))
            try {
                captureRequestBuilder.set(CaptureRequest.SCALER_CROP_REGION, getZoomRect(clampedZoomLevel))
                cameraCaptureSession.setRepeatingRequest(captureRequestBuilder.build(), null, null)
            } catch (e: CameraAccessException) {
                Log.e("CameraZoom", "Error setting zoom: ${e.message}")
            }
        }
    }
    private fun getZoomRect(zoomLevel: Float): Rect {
        val cameraManager = requireActivity().getSystemService(android.content.Context.CAMERA_SERVICE) as CameraManager
        val cameraId = getBackCameraId()
        val cameraCharacteristics = cameraManager.getCameraCharacteristics(cameraId)
        val sensorSize = cameraCharacteristics.get(CameraCharacteristics.SENSOR_INFO_ACTIVE_ARRAY_SIZE) ?: return Rect()

        val centerX = sensorSize.width() / 2
        val centerY = sensorSize.height() / 2
        val deltaX = (0.5f * sensorSize.width() / zoomLevel).toInt()
        val deltaY = (0.5f * sensorSize.height() / zoomLevel).toInt()

        return Rect(centerX - deltaX, centerY - deltaY, centerX + deltaX, centerY + deltaY)
    }


    private fun setupBarcodeScanner() {
        Log.d("setupBarcodeScanner", "setupBarcodeScanner")
        defaultCamera = preferenceHelper.getInt(PreferenceHelper.PREF_CAMERA_MODE, CAMERA_MODE_1)
        isFrontCamera = defaultCamera == CAMERA_MODE_2

        val cameraId =
            if (isFrontCamera) android.hardware.Camera.CameraInfo.CAMERA_FACING_FRONT
            else android.hardware.Camera.CameraInfo.CAMERA_FACING_BACK


        val formats: Collection<BarcodeFormat> =
            listOf(BarcodeFormat.QR_CODE, BarcodeFormat.CODE_39)
        binding.barcodeScanner.barcodeView.decoderFactory = DefaultDecoderFactory(formats)
        binding.barcodeScanner.initializeFromIntent(requireActivity().intent)
        binding.barcodeScanner.decodeContinuous(callback)

        val cameraSettings = CameraSettings()
        cameraSettings.requestedCameraId = cameraId

        binding.barcodeScanner.cameraSettings = cameraSettings
        beepManager = BeepManager(requireActivity())
        binding.barcodeScanner.resume()
        binding.barcodeScanner.setStatusText("")
        qrCodeAnimation = binding.qrCodeAnimation
        loadAndPlayAnimation()

    }
    private fun getBackCameraId(): String {
        val cameraManager = requireActivity().getSystemService(android.content.Context.CAMERA_SERVICE) as CameraManager
        return cameraManager.cameraIdList.firstOrNull { id ->
            val characteristics = cameraManager.getCameraCharacteristics(id)
            characteristics.get(CameraCharacteristics.LENS_FACING) == CameraCharacteristics.LENS_FACING_BACK
        } ?: throw RuntimeException("Back camera not found")
    }
    private fun getFrontCameraId(): String {
        val cameraManager = requireActivity().getSystemService(android.content.Context.CAMERA_SERVICE) as CameraManager
        return cameraManager.cameraIdList.firstOrNull { id ->
            val characteristics = cameraManager.getCameraCharacteristics(id)
            characteristics.get(CameraCharacteristics.LENS_FACING) == CameraCharacteristics.LENS_FACING_FRONT
        } ?: throw RuntimeException("Front camera not found")
    }
    private fun setupSeekbar(){
        binding.seekBar.setOnSeekBarChangeListener(object :SeekBar.OnSeekBarChangeListener{
            override fun onProgressChanged(seekBar: SeekBar?,progress: Int, fromUser: Boolean) {
                val zoomLevel = (progress.toFloat() / 10.0f) *10.0f  // Normalize to 1.0 - maxZoom
                binding.barcodeScanner.barcodeView
                setCameraZoom(zoomLevel)
            }
            override fun onStartTrackingTouch(seekBar: SeekBar?) {
                Log.d("CameraZoom", "SeekBar tracking started")
            }
            override fun onStopTrackingTouch(seekBar: SeekBar?) {
                Log.d("CameraZoom", "SeekBar tracking stopped")
            }
        })
    }