27 lines
1.1 KiB
Kotlin
27 lines
1.1 KiB
Kotlin
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package com.cuvent.experiences.friends.camera
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import androidx.camera.core.FocusMeteringAction
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import androidx.camera.core.SurfaceOrientedMeteringPointFactory
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import com.facebook.react.bridge.ReadableMap
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import kotlinx.coroutines.guava.await
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import java.util.concurrent.TimeUnit
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suspend fun CameraView.focus(pointMap: ReadableMap) {
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val cameraControl = camera?.cameraControl ?: throw CameraNotReadyError()
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if (!pointMap.hasKey("x") || !pointMap.hasKey("y")) {
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throw InvalidTypeScriptUnionError("point", pointMap.toString())
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}
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val dpi = resources.displayMetrics.density
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val x = pointMap.getDouble("x") * dpi
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val y = pointMap.getDouble("y") * dpi
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val factory = SurfaceOrientedMeteringPointFactory(this.width.toFloat(), this.height.toFloat())
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val point = factory.createPoint(x.toFloat(), y.toFloat())
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val action = FocusMeteringAction.Builder(point, FocusMeteringAction.FLAG_AF or FocusMeteringAction.FLAG_AE)
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.setAutoCancelDuration(5, TimeUnit.SECONDS) // auto-reset after 5 seconds
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.build()
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cameraControl.startFocusAndMetering(action).await()
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}
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