1 files changed, 91 insertions, 0 deletions
diff --git a/system/graphics/ipc/CompositorSession.h b/system/graphics/ipc/CompositorSession.h
new file mode 100644
index 000000000..0afcc924a
--- /dev/null
+++ b/system/graphics/ipc/CompositorSession.h
@@ -0,0 +1,91 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef _include_mozilla_gfx_ipc_CompositorSession_h_
+#define _include_mozilla_gfx_ipc_CompositorSession_h_
+
+#include "base/basictypes.h"
+#include "mozilla/layers/LayersTypes.h"
+#include "mozilla/layers/CompositorTypes.h"
+#include "nsISupportsImpl.h"
+
+class nsIWidget;
+
+namespace mozilla {
+namespace widget {
+class CompositorWidget;
+class CompositorWidgetDelegate;
+} // namespace widget
+namespace gfx {
+class GPUProcessHost;
+class GPUProcessManager;
+} // namespace gfx
+namespace layers {
+
+class GeckoContentController;
+class IAPZCTreeManager;
+class CompositorBridgeParent;
+class CompositorBridgeChild;
+class ClientLayerManager;
+
+// A CompositorSession provides access to a compositor without exposing whether
+// or not it's in-process or out-of-process.
+class CompositorSession
+{
+  friend class gfx::GPUProcessManager;
+
+protected:
+  typedef gfx::GPUProcessHost GPUProcessHost;
+  typedef widget::CompositorWidget CompositorWidget;
+  typedef widget::CompositorWidgetDelegate CompositorWidgetDelegate;
+
+public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CompositorSession)
+
+  virtual bool Reset(const nsTArray<LayersBackend>& aBackendHints,
+                     TextureFactoryIdentifier* aOutIdentifier) = 0;
+
+  virtual void Shutdown() = 0;
+
+  // This returns a CompositorBridgeParent if the compositor resides in the same process.
+  virtual CompositorBridgeParent* GetInProcessBridge() const = 0;
+
+  // Set the GeckoContentController for the root of the layer tree.
+  virtual void SetContentController(GeckoContentController* aController) = 0;
+
+  // Return the Async Pan/Zoom Tree Manager for this compositor.
+  virtual RefPtr<IAPZCTreeManager> GetAPZCTreeManager() const = 0;
+
+  // Return the child end of the compositor IPC bridge.
+  CompositorBridgeChild* GetCompositorBridgeChild();
+
+  // Return the proxy for accessing the compositor's widget.
+  CompositorWidgetDelegate* GetCompositorWidgetDelegate() {
+    return mCompositorWidgetDelegate;
+  }
+
+  // Return the id of the root layer tree.
+  uint64_t RootLayerTreeId() const {
+    return mRootLayerTreeId;
+  }
+
+protected:
+  CompositorSession(CompositorWidgetDelegate* aDelegate,
+                    CompositorBridgeChild* aChild,
+                    const uint64_t& aRootLayerTreeId);
+  virtual ~CompositorSession();
+
+protected:
+  CompositorWidgetDelegate* mCompositorWidgetDelegate;
+  RefPtr<CompositorBridgeChild> mCompositorBridgeChild;
+  uint64_t mRootLayerTreeId;
+
+private:
+  DISALLOW_COPY_AND_ASSIGN(CompositorSession);
+};
+
+} // namespace layers
+} // namespace mozilla
+
+#endif // _include_mozilla_gfx_ipc_CompositorSession_h_