Android: Enable Adoption of ANativeWindow handle as a QOffscreenSurface

This is done by adding an API to QOffscreenSurface to enable setting a
native handle which can represent a native offscreen surface.  When
using the TexureView it is necessary to render to SurfaceTexture objects
which are exposed as offscreen window surfaces.  After wraping a
SurfaceTexture in a android.view.Surface object and passing it to C++
via the JNI, it is possible to get the needed ANativeWindow* handle
required to pass to eglCreateWindowSurface. So by setting this native
handle Qt can then render to this "native" offscreen surface.

Change-Id: If7fc5ac7ac588fe6c3a6fb883ea7e439d095470f
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Reviewed-by: J-P Nurmi <jpnurmi@qt.io>
Reviewed-by: BogDan Vatra <bogdan@kdab.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/gui/kernel/qoffscreensurface.h b/src/gui/kernel/qoffscreensurface.h
index bacc9c851a..35c498c89a 100644
--- a/src/gui/kernel/qoffscreensurface.h
+++ b/src/gui/kernel/qoffscreensurface.h
@@ -79,6 +79,9 @@ public:
 
     QPlatformOffscreenSurface *handle() const;
 
+    void *nativeHandle() const;
+    void setNativeHandle(void *handle);
+
 Q_SIGNALS:
     void screenChanged(QScreen *screen);