Ozone integration.

ui/ozone/platform/drm/gpu/gbm_surface.h

+// Copyright 2014 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 UI_OZONE_PLATFORM_DRM_GPU_GBM_SURFACE_H_
+#define UI_OZONE_PLATFORM_DRM_GPU_GBM_SURFACE_H_
+
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "ui/gfx/geometry/size.h"
+#include "ui/ozone/platform/drm/gpu/gbm_surfaceless.h"
+#include "ui/ozone/public/surface_ozone_egl.h"
+
+struct gbm_bo;
+struct gbm_surface;
+
+namespace ui {
+
+class DrmBuffer;
+class DrmWindow;
+class GbmDevice;
+
+// Extends the GBM surfaceless functionality and adds an implicit surface for
+// the primary plane. Arbitrary buffers can still be allocated and displayed as
+// overlay planes, however the primary plane is associated with the native
+// surface and is updated via an EGLSurface.
+class GbmSurface : public GbmSurfaceless {
+ public:
+  GbmSurface(DrmWindow* window_delegate, const scoped_refptr<GbmDevice>& gbm);
+  ~GbmSurface() override;
+
+  bool Initialize();
+
+  // GbmSurfaceless:
+  intptr_t GetNativeWindow() override;
+  bool ResizeNativeWindow(const gfx::Size& viewport_size) override;
+  bool OnSwapBuffers() override;
+  bool OnSwapBuffersAsync(const SwapCompletionCallback& callback) override;
+
+ private:
+  void OnSwapBuffersCallback(const SwapCompletionCallback& callback,
+                             gbm_bo* pending_buffer,
+                             gfx::SwapResult result);
+
+  scoped_refptr<GbmDevice> gbm_;
+
+  // The native GBM surface. In EGL this represents the EGLNativeWindowType.
+  gbm_surface* native_surface_;
+
+  // Buffer currently used for scanout.
+  gbm_bo* current_buffer_;
+
+  gfx::Size size_;
+
+  base::WeakPtrFactory<GbmSurface> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(GbmSurface);
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_PLATFORM_DRM_GPU_GBM_SURFACE_H_