Fix hwdec for wayland

Passing the wayland display to libmpv should improve stability and
enable direct rendering. This seems to be needed for hw decoding to work
on wayland.

Should properly fix #9.

CMakeModules/QtConfiguration.cmake

@@ -26,7 +26,7 @@ set(components Core Network WebChannel Qml Quick Xml WebEngine Widgets)
 
 if(UNIX AND (NOT APPLE) AND ((NOT BUILD_TARGET STREQUAL "RPI")))
   add_definitions(-DUSE_X11EXTRAS)
-  set(components ${components} X11Extras)
+  set(components ${components} X11Extras Gui)
 endif()
 
 if(LINUX_DBUS)
@@ -47,6 +47,11 @@ foreach(COMP ${components})
 		include_directories(${${mod}_PRIVATE_INCLUDE_DIRS})
 	endif(OPENELEC)
 
+	# Need private interfaces for qpa/qplatformnativeinterface.h:
+	if(${mod} STREQUAL Qt5Gui)
+		include_directories(${Qt5Gui_PRIVATE_INCLUDE_DIRS})
+	endif()
+
 	list(APPEND QT5_LIBRARIES ${${mod}_LIBRARIES})
 	list(APPEND QT5_CFLAGS ${${mod}_EXECUTABLE_COMPILE_FLAGS})
 endforeach(COMP ${components})

src/player/PlayerQuickItem.cpp

@@ -26,6 +26,7 @@
 
 #ifdef USE_X11EXTRAS
 #include <QX11Info>
+#include <qpa/qplatformnativeinterface.h>
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
@@ -114,6 +115,10 @@ mpv_opengl_init_params opengl_params = {
   if (platformName.contains("xcb")) {
     params[2].type = MPV_RENDER_PARAM_X11_DISPLAY;
     params[2].data = QX11Info::display();
+  } else if (platformName.contains("wayland")) {
+    QPlatformNativeInterface *native = QGuiApplication::platformNativeInterface();
+    params[2].type = MPV_RENDER_PARAM_WL_DISPLAY;
+    params[2].data = native->nativeResourceForWindow("display", NULL);
   }
 #endif
   int err = mpv_render_context_create(&m_mpvGL, m_mpv, params);