Bug 1616680 [Wayland] Use widget.wayland_dmabuf_vaapi.enabled to enable VAAPI / dmabuf video playback, r=jhorak

Differential Revision: https://phabricator.services.mozilla.com/D63381

--HG--
extra : moz-landing-system : lando

gfx/thebes/gfxPlatformGtk.cpp

@@ -733,4 +733,8 @@ bool gfxPlatformGtk::UseWaylandDMABufTextures() {
 bool gfxPlatformGtk::UseWaylandDMABufWebGL() {
   return IsWaylandDisplay() && nsWaylandDisplay::IsDMABufWebGLEnabled();
 }
+bool gfxPlatformGtk::UseWaylandHardwareVideoDecoding() {
+  return IsWaylandDisplay() && nsWaylandDisplay::IsDMABufVAAPIEnabled() &&
+         gfxPlatform::CanUseHardwareVideoDecoding();
+}
 #endif

gfx/thebes/gfxPlatformGtk.h

@@ -95,6 +95,7 @@ class gfxPlatformGtk : public gfxPlatform {
 #ifdef MOZ_WAYLAND
   bool UseWaylandDMABufTextures();
   bool UseWaylandDMABufWebGL();
+  bool UseWaylandHardwareVideoDecoding();
 #endif
 
   bool IsX11Display() { return mIsX11Display; }

widget/gtk/nsWaylandDisplay.cpp

@@ -26,6 +26,8 @@ namespace widget {
 #define DMABUF_BASIC_PREF "widget.wayland_dmabuf_basic_compositor.enabled"
 // Enable dmabuf for WebGL backend
 #define DMABUF_WEBGL_PREF "widget.wayland_dmabuf_webgl.enabled"
+// Enable dmabuf for VA-API backend
+#define DMABUF_VAAPI_PREF "widget.wayland_dmabuf_vaapi.enabled"
 // See WindowSurfaceWayland::RenderingCacheMode for details.
 #define CACHE_MODE_PREF "widget.wayland_cache_mode"
 
@@ -33,6 +35,7 @@ bool nsWaylandDisplay::sIsDMABufEnabled = false;
 int nsWaylandDisplay::sIsDMABufPrefTextState = false;
 int nsWaylandDisplay::sIsDMABufPrefBasicCompositorState = false;
 int nsWaylandDisplay::sIsDMABufPrefWebGLState = false;
+int nsWaylandDisplay::sIsDMABufPrefVAAPIState = false;
 bool nsWaylandDisplay::sIsDMABufConfigured = false;
 int nsWaylandDisplay::sRenderingCacheModePref = -1;
 bool nsWaylandDisplay::sIsPrefLoaded = false;
@@ -423,6 +426,7 @@ nsWaylandDisplay::nsWaylandDisplay(wl_display* aDisplay)
       sIsDMABufPrefBasicCompositorState =
           Preferences::GetBool(DMABUF_BASIC_PREF, false);
       sIsDMABufPrefWebGLState = Preferences::GetBool(DMABUF_WEBGL_PREF, false);
+      sIsDMABufPrefVAAPIState = Preferences::GetBool(DMABUF_VAAPI_PREF, false);
       sRenderingCacheModePref = Preferences::GetInt(CACHE_MODE_PREF, 0);
       sIsPrefLoaded = true;
     }
@@ -505,6 +509,9 @@ bool nsWaylandDisplay::IsDMABufTexturesEnabled() {
 bool nsWaylandDisplay::IsDMABufWebGLEnabled() {
   return IsDMABufEnabled() && sIsDMABufPrefWebGLState;
 }
+bool nsWaylandDisplay::IsDMABufVAAPIEnabled() {
+  return IsDMABufEnabled() && sIsDMABufPrefVAAPIState;
+}
 
 void* nsGbmLib::sGbmLibHandle = nullptr;
 void* nsGbmLib::sXf86DrmLibHandle = nullptr;

widget/gtk/nsWaylandDisplay.h

@@ -90,6 +90,7 @@ class nsWaylandDisplay {
   static bool IsDMABufBasicEnabled();
   static bool IsDMABufTexturesEnabled();
   static bool IsDMABufWebGLEnabled();
+  static bool IsDMABufVAAPIEnabled();
 
   // See WindowSurfaceWayland::CacheMode for details.
   int GetRenderingCacheModePref() { return sRenderingCacheModePref; };
@@ -121,6 +122,7 @@ class nsWaylandDisplay {
   static int sIsDMABufPrefTextState;
   static int sIsDMABufPrefBasicCompositorState;
   static int sIsDMABufPrefWebGLState;
+  static int sIsDMABufPrefVAAPIState;
   static bool sIsDMABufConfigured;
   static int sRenderingCacheModePref;
   static bool sIsPrefLoaded;