Question: Currently there's no equivalent to CameraView (and PreviewView) in Compose. Is it possible to wrap it and display it in a compose layout?

Answer: 
There is still no CameraX composable. You need to use `AndroidView` to create one.

Updated example for Compose 1.0.0-beta02:

```kotlin
@Composable
fun CameraPreview(
    modifier: Modifier = Modifier,
    cameraSelector: CameraSelector = CameraSelector.DEFAULT_BACK_CAMERA,
    scaleType: PreviewView.ScaleType = PreviewView.ScaleType.FILL_CENTER,
) {
    val lifecycleOwner = LocalLifecycleOwner.current
    AndroidView(
        modifier = modifier,
        factory = { context ->
            val previewView = PreviewView(context).apply {
                this.scaleType = scaleType
                layoutParams = ViewGroup.LayoutParams(
                    ViewGroup.LayoutParams.MATCH_PARENT,
                    ViewGroup.LayoutParams.MATCH_PARENT
                )
                // Preview is incorrectly scaled in Compose on some devices without this
                implementationMode = PreviewView.ImplementationMode.COMPATIBLE
            }

            val cameraProviderFuture = ProcessCameraProvider.getInstance(context)

            cameraProviderFuture.addListener({
                val cameraProvider = cameraProviderFuture.get()

                // Preview
                val preview = Preview.Builder()
                    .build()
                    .also {
                        it.setSurfaceProvider(previewView.surfaceProvider)
                    }

                try {
                    // Must unbind the use-cases before rebinding them.
                    cameraProvider.unbindAll()

                    cameraProvider.bindToLifecycle(
                        lifecycleOwner, cameraSelector, preview
                    )
                } catch (exc: Exception) {
                    Log.e(TAG, "Use case binding failed", exc)
                }
            }, ContextCompat.getMainExecutor(context))

            previewView
        })
}

```
This is my snippet (based on Sean's answer), which also handles torch state and resource disposition and adds a focus on tap logic.
Dependencies:

```
implementation 'androidx.camera:camera-camera2:1.1.0-alpha11'
implementation 'androidx.camera:camera-view:1.0.0-alpha31'
implementation 'androidx.camera:camera-lifecycle:1.1.0-alpha11'

implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-guava:1.6.0-RC'

```

```
@Composable
fun CameraPreview(
    modifier: Modifier = Modifier,
    cameraSelector: CameraSelector = CameraSelector.DEFAULT_BACK_CAMERA,
    implementationMode: PreviewView.ImplementationMode = PreviewView.ImplementationMode.COMPATIBLE,
    scaleType: PreviewView.ScaleType = PreviewView.ScaleType.FILL_CENTER,
    imageAnalysis: ImageAnalysis? = null,
    imageCapture: ImageCapture? = null,
    preview: Preview = remember { Preview.Builder().build() },
    enableTorch: Boolean = false,
    focusOnTap: Boolean = false
) {
    val context = LocalContext.current
    val lifecycleOwner = LocalLifecycleOwner.current

    val cameraProvider by produceState<ProcessCameraProvider?>(initialValue = null) {
        value = ProcessCameraProvider.getInstance(context).await()
    }

    // TODO: add cameraSelector
    val camera = remember(cameraProvider) {
        cameraProvider?.let {
            it.unbindAll()
            it.bindToLifecycle(
                lifecycleOwner,
                cameraSelector,
                *listOfNotNull(imageAnalysis, imageCapture, preview).toTypedArray()
            )
        }
    }

    LaunchedEffect(camera, enableTorch) {
        camera?.let {
            if (it.cameraInfo.hasFlashUnit()) {
                it.cameraControl.enableTorch(enableTorch).await()
            }
        }
    }

    DisposableEffect(Unit) {
        onDispose {
            cameraProvider?.unbindAll()
        }
    }

    AndroidView(
        modifier = modifier.pointerInput(camera, focusOnTap) {
            if (!focusOnTap) return@pointerInput

            detectTapGestures {
                val meteringPointFactory = SurfaceOrientedMeteringPointFactory(
                    size.width.toFloat(),
                    size.height.toFloat()
                )

                val meteringAction = FocusMeteringAction.Builder(
                    meteringPointFactory.createPoint(it.x, it.y),
                    FocusMeteringAction.FLAG_AF
                ).disableAutoCancel().build()

                camera?.cameraControl?.startFocusAndMetering(meteringAction)
            }
        },
        factory = { _ ->
            PreviewView(context).also {
                it.scaleType = scaleType
                it.implementationMode = implementationMode
                preview.setSurfaceProvider(it.surfaceProvider)
            }
        }
    )
}

```