OffscreenBrowserCompositorOutputSurface for Unified Desktop

content/browser/compositor/offscreen_browser_compositor_output_surface.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_BROWSER_COMPOSITOR_OFFSCREEN_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
+#define CONTENT_BROWSER_COMPOSITOR_OFFSCREEN_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
+
+#include "base/cancelable_callback.h"
+#include "base/memory/weak_ptr.h"
+#include "content/browser/compositor/browser_compositor_output_surface.h"
+
+namespace ui {
+class CompositorVSyncManager;
+}
+
+namespace content {
+class CommandBufferProxyImpl;
+
+class OffscreenBrowserCompositorOutputSurface
+    : public BrowserCompositorOutputSurface {
+ public:
+  OffscreenBrowserCompositorOutputSurface(
+      const scoped_refptr<ContextProviderCommandBuffer>& context,
+      const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager,
+      scoped_ptr<BrowserCompositorOverlayCandidateValidator>
+          overlay_candidate_validator);
+
+  ~OffscreenBrowserCompositorOutputSurface() override;
+
+ protected:
+  // cc::OutputSurface:
+  void EnsureBackbuffer() override;
+  void DiscardBackbuffer() override;
+  void Reshape(const gfx::Size& size, float scale_factor) override;
+  void BindFramebuffer() override;
+  void SwapBuffers(cc::CompositorFrame* frame) override;
+
+#if defined(OS_MACOSX)
+  void OnSurfaceDisplayed() override {};
+  void SetSurfaceSuspendedForRecycle(bool suspended) override {};
+  bool SurfaceShouldNotShowFramesAfterSuspendForRecycle() const override;
+#endif
+
+  uint32 fbo_;
+  bool is_backbuffer_discarded_;
+  uint32 backing_texture_id_;
+
+  base::WeakPtrFactory<OffscreenBrowserCompositorOutputSurface>
+      weak_ptr_factory_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(OffscreenBrowserCompositorOutputSurface);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_COMPOSITOR_OFFSCREEN_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_