From b21d16a15f9147917e4deea1ce9ad4995785f931 Mon Sep 17 00:00:00 2001
From: Ronan Abhamon <ronan.abhamon@belledonne-communications.com>
Date: Mon, 6 Aug 2018 13:26:26 +0200
Subject: [PATCH] fix(Camera): share opengl context, avoid reset of window id

---
 src/app/AppController.cpp        | 3 +++
 src/components/camera/Camera.cpp | 9 +++++----
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/app/AppController.cpp b/src/app/AppController.cpp
index bb9314765..653407fd0 100644
--- a/src/app/AppController.cpp
+++ b/src/app/AppController.cpp
@@ -50,6 +50,9 @@ AppController::AppController (int &argc, char *argv[]) {
 
   QGuiApplication::setAttribute(Qt::AA_DisableHighDpiScaling, true);
 
+  // Useful to share camera on Fullscreen (other context).
+  QApplication::setAttribute(Qt::AA_ShareOpenGLContexts);
+
   // ---------------------------------------------------------------------------
   // App creation.
   // ---------------------------------------------------------------------------
diff --git a/src/components/camera/Camera.cpp b/src/components/camera/Camera.cpp
index be23f6613..df113935e 100644
--- a/src/components/camera/Camera.cpp
+++ b/src/components/camera/Camera.cpp
@@ -56,12 +56,13 @@ CameraRenderer::~CameraRenderer () {
   qInfo() << QStringLiteral("Delete context info:") << mContextInfo;
 
   CoreManager *coreManager = CoreManager::getInstance();
-
   coreManager->lockVideoRender();
 
-  if (mIsPreview)
-    coreManager->getCore()->setNativePreviewWindowId(nullptr);
-  else if (mCall)
+  shared_ptr<linphone::Core> core = coreManager->getCore();
+  if (mIsPreview) {
+    if (core->getNativePreviewWindowId() == mContextInfo)
+      core->setNativePreviewWindowId(nullptr);
+  } else if (mCall && mCall->getNativeVideoWindowId() == mContextInfo)
     mCall->setNativeVideoWindowId(nullptr);
 
   coreManager->unlockVideoRender();