From b02367c288bab5a0a9fac388b3105165ad2692fe Mon Sep 17 00:00:00 2001
From: ujizin <lucasyujideveloper@gmail.com>
Date: Sat, 9 Dec 2023 18:36:26 +0000
Subject: [PATCH] fix image analysis use case to camera hardware under level 3

---
 .../extensions/CameraManagerExtensions.kt     | 16 ++++++++++
 .../ujizin/camposer/helper/CameraHelper.kt    | 14 ++++++++
 .../com/ujizin/camposer/state/CameraState.kt  | 32 +++++++++++++++++--
 3 files changed, 60 insertions(+), 2 deletions(-)
 create mode 100644 camposer/src/main/java/com/ujizin/camposer/extensions/CameraManagerExtensions.kt
 create mode 100644 camposer/src/main/java/com/ujizin/camposer/helper/CameraHelper.kt

diff --git a/camposer/src/main/java/com/ujizin/camposer/extensions/CameraManagerExtensions.kt b/camposer/src/main/java/com/ujizin/camposer/extensions/CameraManagerExtensions.kt
new file mode 100644
index 0000000..372d2d6
--- /dev/null
+++ b/camposer/src/main/java/com/ujizin/camposer/extensions/CameraManagerExtensions.kt
@@ -0,0 +1,16 @@
+package com.ujizin.camposer.extensions
+
+import android.hardware.camera2.CameraCharacteristics
+import android.hardware.camera2.CameraManager
+import com.ujizin.camposer.helper.CameraHelper
+
+internal fun CameraManager.isImageAnalysisSupported(lensFacing: Int?): Boolean {
+    val cameraId = cameraIdList.firstOrNull {
+        getCameraCharacteristics(it).get(CameraCharacteristics.LENS_FACING) == lensFacing
+    } ?: return false
+
+    val level = getCameraCharacteristics(cameraId)
+        .get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL) ?: 0
+
+    return level >= CameraHelper.compatHardwareLevel3
+}
diff --git a/camposer/src/main/java/com/ujizin/camposer/helper/CameraHelper.kt b/camposer/src/main/java/com/ujizin/camposer/helper/CameraHelper.kt
new file mode 100644
index 0000000..e0aba3d
--- /dev/null
+++ b/camposer/src/main/java/com/ujizin/camposer/helper/CameraHelper.kt
@@ -0,0 +1,14 @@
+package com.ujizin.camposer.helper
+
+import android.hardware.camera2.CameraCharacteristics
+import android.os.Build
+
+internal object CameraHelper {
+    
+    private const val COMPAT_HARDWARE_LEVEL_3 = 3 
+
+    internal val compatHardwareLevel3: Int = when {
+        Build.VERSION.SDK_INT >= Build.VERSION_CODES.N -> CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_3
+        else -> COMPAT_HARDWARE_LEVEL_3
+    }
+}
diff --git a/camposer/src/main/java/com/ujizin/camposer/state/CameraState.kt b/camposer/src/main/java/com/ujizin/camposer/state/CameraState.kt
index cd8795e..504b1fb 100644
--- a/camposer/src/main/java/com/ujizin/camposer/state/CameraState.kt
+++ b/camposer/src/main/java/com/ujizin/camposer/state/CameraState.kt
@@ -1,8 +1,10 @@
 package com.ujizin.camposer.state
 
+import android.annotation.SuppressLint
 import android.content.ContentResolver
 import android.content.ContentValues
 import android.content.Context
+import android.hardware.camera2.CameraManager
 import android.net.Uri
 import android.provider.MediaStore
 import android.util.Log
@@ -26,6 +28,7 @@ import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.setValue
 import com.ujizin.camposer.extensions.compatMainExecutor
+import com.ujizin.camposer.extensions.isImageAnalysisSupported
 import java.io.File
 import java.util.concurrent.Executor
 
@@ -216,11 +219,24 @@ public class CameraState(context: Context) {
      * */
     private val useCases: MutableSet<Int> = mutableSetOf(IMAGE_ANALYSIS)
 
+    private val cameraManager = context.getSystemService(Context.CAMERA_SERVICE) as? CameraManager
+
+    /**
+     * Check if image analysis is supported by camera hardware level.
+     * */
+    public var isImageAnalysisSupported: Boolean by mutableStateOf(isImageAnalysisSupported(camSelector))
+        private set
+
     /**
      * Enable/Disable Image analysis from the camera.
      * */
-    internal var isImageAnalysisEnabled: Boolean = true
+    internal var isImageAnalysisEnabled: Boolean = isImageAnalysisSupported
         set(value) {
+            if (!isImageAnalysisSupported) {
+                Log.e(TAG, "Image analysis is not supported")
+                return
+            }
+
             if (value != field) {
                 if (value) useCases += IMAGE_ANALYSIS else useCases -= IMAGE_ANALYSIS
                 updateUseCases()
@@ -229,7 +245,12 @@ public class CameraState(context: Context) {
         }
 
     private fun updateUseCases() {
-        controller.setEnabledUseCases(useCases.sumOr(captureMode.value))
+        try {
+            controller.setEnabledUseCases(useCases.sumOr(captureMode.value))
+        } catch (exception: IllegalStateException) {
+            Log.e(TAG, "Use case Image Analysis not supported")
+            controller.setEnabledUseCases(captureMode.value)
+        }
     }
 
     /**
@@ -303,6 +324,7 @@ public class CameraState(context: Context) {
     /**
      * Return true if it's recording.
      * */
+    @ExperimentalVideo
     public var isRecording: Boolean by mutableStateOf(controller.isRecording)
         private set
 
@@ -523,6 +545,7 @@ public class CameraState(context: Context) {
 
     private fun resetCamera() {
         hasFlashUnit = controller.cameraInfo?.hasFlashUnit() ?: false
+        isImageAnalysisSupported = isImageAnalysisSupported(camSelector)
         startZoom()
         startExposure()
     }
@@ -531,6 +554,11 @@ public class CameraState(context: Context) {
         acc or current
     }
 
+    @SuppressLint("RestrictedApi")
+    private fun isImageAnalysisSupported(
+        cameraSelector: CamSelector
+    ): Boolean = cameraManager?.isImageAnalysisSupported(cameraSelector.selector.lensFacing) ?: false
+
     /**
      * Update all values from camera state.
      * */