CameraX Focus Infinity

[jose luis larraz]

How can I set the focus to infinity mode?

[Kirill Konovalov]

Greetings. 

Maybe I can help. In CameraX beta04 was added Camera2Interop. It allow set some settings to use cases and in your case set focus.

Example below in Kotlin.

private fun initPreviewUseCase(): Preview {
  val preview = Preview.Builder()
  attachSettingsTo(preview, false)
  return preview.build()
}

private fun attachSettingsTo(useCaseBuilder: Any, isAF:Boolean){
  Camera2Interop.Extender(useCaseBuilder as ExtendableBuilder<*>).run {
   if (isAF) setCaptureRequestOption(CaptureRequest.CONTROL_AF_MODE, CameraMetadata.CONTROL_AF_MODE_CONTINUOUS_VIDEO)
   else {
    setCaptureRequestOption(CaptureRequest.CONTROL_AF_MODE, CameraMetadata.CONTROL_AF_MODE_OFF)
    setCaptureRequestOption(CaptureRequest.LENS_FOCUS_DISTANCE, 0F) // 0F - means infinity focus
}}}

Usefull links.

https://developer.android.com/reference/android/hardware/camera2/CaptureRequest#

https://developer.android.com/reference/android/hardware/camera2/CameraMetadata

четверг, 3 сентября 2020 г. в 19:57:55 UTC+3, jll...@gmail.com:

[Scott Nien]

As Kirill said,  Camera2Interop can do the trick.  

But if you need to change the focus on the fly (without unbinding and rebinding the use cases) ,   we are designing a new Camera2Interop API that can support this scenario.  Hopefully it can be released soon. 

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