Improve camera source error handling and fallback mechanism

- Add comprehensive error handling for multi-camera and single camera setups
- Implement fallback to single camera source if multi-camera initialization fails
- Log detailed error messages for different camera setup scenarios
- Ensure graceful handling of camera permission and initialization errors

Author: 8thgencore

app/src/main/java/com/haishinkit/app/CameraScreen.kt

@@ -136,19 +136,40 @@ fun CameraScreen(
         }, onVideoPermissionStatus = { state ->
             when (state.status) {
                 PermissionStatus.Granted -> {
-                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
-                        stream.attachVideo(MultiCamera2Source(context))
-                        (stream.videoSource as? MultiCamera2Source)?.apply {
-                            open(0, CameraCharacteristics.LENS_FACING_BACK)
-                            open(1, CameraCharacteristics.LENS_FACING_FRONT)
-                            getVideoByChannel(1)?.apply {
-                                frame = Rect(20, 20, 90 + 20, 160 + 20)
+                    try {
+                        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+                            stream.attachVideo(MultiCamera2Source(context))
+                            (stream.videoSource as? MultiCamera2Source)?.apply {
+                                try {
+                                    open(0, CameraCharacteristics.LENS_FACING_BACK)
+                                    open(1, CameraCharacteristics.LENS_FACING_FRONT)
+                                    getVideoByChannel(1)?.apply {
+                                        frame = Rect(20, 20, 90 + 20, 160 + 20)
+                                    }
+                                } catch (e: Exception) {
+                                    Log.e(TAG, "Error while setting up multi-camera: ${e.message}", e)
+                                    // If multi-camera setup fails, revert to single camera
+                                    stream.attachVideo(null)
+                                    stream.attachVideo(Camera2Source(context).apply {
+                                        try {
+                                            open(CameraCharacteristics.LENS_FACING_BACK)
+                                        } catch (e: Exception) {
+                                            Log.e(TAG, "Error while opening main camera: ${e.message}", e)
+                                        }
+                                    })
+                                }
                             }
+                        } else {
+                            stream.attachVideo(Camera2Source(context).apply {
+                                try {
+                                    open(CameraCharacteristics.LENS_FACING_BACK)
+                                } catch (e: Exception) {
+                                    Log.e(TAG, "Error while opening camera: ${e.message}", e)
+                                }
+                            })
                         }
-                    } else {
-                        (stream.videoSource as? Camera2Source)?.apply {
-                            open(CameraCharacteristics.LENS_FACING_BACK)
-                        }
+                    } catch (e: Exception) {
+                        Log.e(TAG, "General error while setting up camera: ${e.message}", e)
                     }
                 }