CameraXEnumerator.kt
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/*
* Copyright 2024 LiveKit, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package livekit.org.webrtc
import android.content.Context
import android.graphics.Rect
import android.graphics.SurfaceTexture
import android.hardware.camera2.CameraCharacteristics
import android.os.Build
import android.os.Build.VERSION
import androidx.camera.camera2.interop.Camera2CameraInfo
import androidx.camera.camera2.interop.ExperimentalCamera2Interop
import androidx.lifecycle.LifecycleOwner
@ExperimentalCamera2Interop
class CameraXEnumerator(
context: Context,
private val lifecycleOwner: LifecycleOwner,
) : Camera2Enumerator(context) {
override fun createCapturer(
deviceName: String?,
eventsHandler: CameraVideoCapturer.CameraEventsHandler?,
): CameraVideoCapturer {
return CameraXCapturer(context, lifecycleOwner, deviceName, eventsHandler)
}
companion object {
fun getSupportedSizes(camera: Camera2CameraInfo): List<Size> {
val streamMap = camera.getCameraCharacteristic(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP)
val supportLevel = camera.getCameraCharacteristic(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL)
val nativeSizes = streamMap!!.getOutputSizes(SurfaceTexture::class.java)
val sizes = convertSizes(nativeSizes)
val activeArraySize: Rect? = camera.getCameraCharacteristic(CameraCharacteristics.SENSOR_INFO_ACTIVE_ARRAY_SIZE)
return if (VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP_MR1 &&
supportLevel == CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY &&
activeArraySize != null
) {
val filteredSizes = ArrayList<Size>()
for (size in sizes) {
if (activeArraySize.width() * size.height == activeArraySize.height() * size.width) {
filteredSizes.add(size)
}
}
filteredSizes
} else {
sizes
}
}
private fun convertSizes(cameraSizes: Array<android.util.Size>): List<Size> {
val sizes: MutableList<Size> = ArrayList()
for (size in cameraSizes) {
sizes.add(Size(size.width, size.height))
}
return sizes
}
}
}