From 7817e6603ca38379b0e0e86912b092de8fd14e44 Mon Sep 17 00:00:00 2001
From: Sylvain Berfini <sylvain.berfini@belledonne-communications.com>
Date: Wed, 3 Dec 2025 14:19:35 +0100
Subject: [PATCH] Force front camera as default device when leaving QR code
 fragment

---
 .../java/org/linphone/core/CoreContext.kt     | 22 +++++++++++++++++++
 .../fragment/QrCodeScannerFragment.kt         |  2 ++
 .../ui/assistant/viewmodel/QrCodeViewModel.kt | 22 +++++++------------
 .../viewmodel/MeetingWaitingRoomViewModel.kt  | 18 +++++++--------
 4 files changed, 40 insertions(+), 24 deletions(-)

diff --git a/app/src/main/java/org/linphone/core/CoreContext.kt b/app/src/main/java/org/linphone/core/CoreContext.kt
index f80055ac4..819964db3 100644
--- a/app/src/main/java/org/linphone/core/CoreContext.kt
+++ b/app/src/main/java/org/linphone/core/CoreContext.kt
@@ -1269,4 +1269,26 @@ class CoreContext
             }
         }
     }
+
+    fun setBackCamera(): Boolean {
+        for (camera in core.videoDevicesList) {
+            if (camera.contains("Back")) {
+                Log.i("TAG Found back facing camera [$camera], using it")
+                coreContext.core.videoDevice = camera
+                return true
+            }
+        }
+        return false
+    }
+
+    fun setFrontCamera(): Boolean {
+        for (camera in core.videoDevicesList) {
+            if (camera.contains("Front")) {
+                Log.i("$TAG Found front facing camera [$camera], using it")
+                coreContext.core.videoDevice = camera
+                return true
+            }
+        }
+        return false
+    }
 }
diff --git a/app/src/main/java/org/linphone/ui/assistant/fragment/QrCodeScannerFragment.kt b/app/src/main/java/org/linphone/ui/assistant/fragment/QrCodeScannerFragment.kt
index 566d9094d..8a7c49b1a 100644
--- a/app/src/main/java/org/linphone/ui/assistant/fragment/QrCodeScannerFragment.kt
+++ b/app/src/main/java/org/linphone/ui/assistant/fragment/QrCodeScannerFragment.kt
@@ -147,6 +147,8 @@ class QrCodeScannerFragment : GenericFragment() {
             core.nativePreviewWindowId = null
             core.isVideoPreviewEnabled = false
             core.isQrcodeVideoPreviewEnabled = false
+
+            coreContext.setFrontCamera()
         }
 
         super.onPause()
diff --git a/app/src/main/java/org/linphone/ui/assistant/viewmodel/QrCodeViewModel.kt b/app/src/main/java/org/linphone/ui/assistant/viewmodel/QrCodeViewModel.kt
index 6f986194e..e0de49fbc 100644
--- a/app/src/main/java/org/linphone/ui/assistant/viewmodel/QrCodeViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/assistant/viewmodel/QrCodeViewModel.kt
@@ -122,23 +122,17 @@ class QrCodeViewModel
             // this is required right after granting the CAMERA permission
             core.reloadVideoDevices()
 
-            for (camera in core.videoDevicesList) {
-                if (camera.contains("Back")) {
-                    Log.i("$TAG Found back facing camera [$camera], using it")
-                    coreContext.core.videoDevice = camera
-                    return@postOnCoreThread
+            if (!coreContext.setBackCamera()) {
+                for (camera in core.videoDevicesList) {
+                    if (camera != "StaticImage: Static picture") {
+                        Log.w("$TAG No back facing camera found, using first one available [$camera]")
+                        coreContext.core.videoDevice = camera
+                        return@postOnCoreThread
+                    }
                 }
-            }
 
-            for (camera in core.videoDevicesList) {
-                if (camera != "StaticImage: Static picture") {
-                    Log.w("$TAG No back facing camera found, using first one available [$camera]")
-                    coreContext.core.videoDevice = camera
-                    return@postOnCoreThread
-                }
+                Log.e("$TAG No camera device found!")
             }
-
-            Log.e("$TAG No camera device found!")
         }
     }
 }
diff --git a/app/src/main/java/org/linphone/ui/main/meetings/viewmodel/MeetingWaitingRoomViewModel.kt b/app/src/main/java/org/linphone/ui/main/meetings/viewmodel/MeetingWaitingRoomViewModel.kt
index 2ad451122..169191702 100644
--- a/app/src/main/java/org/linphone/ui/main/meetings/viewmodel/MeetingWaitingRoomViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/main/meetings/viewmodel/MeetingWaitingRoomViewModel.kt
@@ -212,18 +212,16 @@ class MeetingWaitingRoomViewModel
     @UiThread
     fun setFrontCamera() {
         coreContext.postOnCoreThread { core ->
-            for (camera in core.videoDevicesList) {
-                if (camera.contains("Front")) {
-                    Log.i("$TAG Found front facing camera [$camera], using it")
-                    coreContext.core.videoDevice = camera
-                    return@postOnCoreThread
+            if (!coreContext.setFrontCamera()) {
+                for (camera in core.videoDevicesList) {
+                    if (camera != "StaticImage: Static picture") {
+                        Log.w("$TAG No front facing camera found, using first one available [$camera]")
+                        coreContext.core.videoDevice = camera
+                        return@postOnCoreThread
+                    }
                 }
-            }
 
-            val first = core.videoDevicesList.firstOrNull()
-            if (first != null) {
-                Log.w("$TAG No front facing camera found, using first one available [$first]")
-                coreContext.core.videoDevice = first
+                Log.e("$TAG No camera device found!")
             }
         }
     }