android-camerax-videocapture-api-gists-getResolutions.kt

fun getResolutions(selector:CameraSelector,
                   provider:ProcessCameraProvider
): Map<Quality, Size> {
    return selector.filter(provider.availableCameraInfos).firstOrNull()
           ?.let { camInfo ->
              QualitySelector.getSupportedQualities(camInfo)
              .associateWith { quality ->
                  QualitySelector.getResolution(camInfo, quality)!!
              }
           } ?: emptyMap()
}