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add camera2 callback availability #1910

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Merged
merged 1 commit into from
Sep 4, 2025
Merged

add camera2 callback availability #1910

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19 changes: 19 additions & 0 deletions encoder/src/main/java/com/pedro/encoder/input/sources/video/Camera2Source.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@ package com.pedro.encoder.input.sources.video
import android.content.Context
import android.graphics.SurfaceTexture
import android.hardware.camera2.CameraCharacteristics
import android.hardware.camera2.CameraManager
import android.os.Build
import android.util.Range
import android.util.Size
Expand Down Expand Up @@ -269,4 +270,22 @@ class Camera2Source(context: Context): VideoSource() {
size?.let { checkResolutionSupported(it.width, it.height) }
camera.setRequiredResolution(size)
}

/**
* Add a callback to detect the camera availability.
* Set null value to remove the callback
*/
fun setAvailabilityCallback(callback: CameraManager.AvailabilityCallback?) {
camera.setAvailabilityCallback(callback)
}

/**
* Re start camera if possible, return true or false depend if can do it or not.
*/
fun restart(): Boolean {
if (isRunning()) camera.reOpenCamera(camera.getCurrentCameraId())
else if (camera.isPrepared) camera.openCameraId(camera.getCurrentCameraId())
else return false
return true
}
}
13 changes: 12 additions & 1 deletion encoder/src/main/java/com/pedro/encoder/input/video/Camera2ApiManager.kt
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Expand Up @@ -77,7 +77,8 @@ class Camera2ApiManager(context: Context) : CameraDevice.StateCallback() {
private val cameraManager = context.getSystemService(Context.CAMERA_SERVICE) as CameraManager
private var cameraHandler: Handler? = null
private var cameraCaptureSession: CameraCaptureSession? = null
private var isPrepared: Boolean = false
var isPrepared: Boolean = false
private set
private var cameraId: String = "0"
private var physicalCameraId: String? = null
private var facing = Facing.BACK
Expand Down Expand Up @@ -114,6 +115,7 @@ class Camera2ApiManager(context: Context) : CameraDevice.StateCallback() {
private var faceDetectionEnabled = false
private var faceDetectionMode = 0
private var imageReader: ImageReader? = null
private var availabilityCallback: CameraManager.AvailabilityCallback? = null

init {
cameraId = try { getCameraIdForFacing(Facing.BACK) } catch (_: Exception) { "0" }
Expand Down Expand Up @@ -239,6 +241,15 @@ class Camera2ApiManager(context: Context) : CameraDevice.StateCallback() {
this.cameraId = cameraId
}

fun setAvailabilityCallback(callback: CameraManager.AvailabilityCallback?) {
if (callback == null) {
availabilityCallback?.let { cameraManager.unregisterAvailabilityCallback(it) }
} else {
cameraManager.registerAvailabilityCallback(callback, null)
availabilityCallback = callback
}
}

var cameraFacing: Facing
get() = facing
set(cameraFacing) {
Expand Down