[Ozone] Adding a software rendering implementation of SurfaceFactoryOzone

ui/gfx/ozone/impl/software_surface_factory_ozone.h

+// Copyright (c) 2013 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_GFX_OZONE_IMPL_SOFTWARE_SURFACE_FACTORY_OZONE_H_
+#define UI_GFX_OZONE_IMPL_SOFTWARE_SURFACE_FACTORY_OZONE_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "ui/gfx/ozone/surface_factory_ozone.h"
+
+namespace gfx {
+
+class DrmWrapperOzone;
+class HardwareDisplayControllerOzone;
+class SoftwareSurfaceOzone;
+
+// SurfaceFactoryOzone implementation on top of DRM/KMS using dumb buffers.
+// This implementation is used in conjunction with the software rendering
+// path.
+class SoftwareSurfaceFactoryOzone : public SurfaceFactoryOzone {
+ public:
+  SoftwareSurfaceFactoryOzone();
+  virtual ~SoftwareSurfaceFactoryOzone();
+
+  virtual HardwareState InitializeHardware() OVERRIDE;
+  virtual void ShutdownHardware() OVERRIDE;
+
+  virtual gfx::AcceleratedWidget GetAcceleratedWidget() OVERRIDE;
+  virtual gfx::AcceleratedWidget RealizeAcceleratedWidget(
+      gfx::AcceleratedWidget w) OVERRIDE;
+
+  virtual bool LoadEGLGLES2Bindings() OVERRIDE;
+
+  virtual bool AttemptToResizeAcceleratedWidget(
+      gfx::AcceleratedWidget w,
+      const gfx::Rect& bounds) OVERRIDE;
+
+  virtual bool SchedulePageFlip(gfx::AcceleratedWidget w) OVERRIDE;
+
+  virtual gfx::VSyncProvider* GetVSyncProvider(
+      gfx::AcceleratedWidget w) OVERRIDE;
+
+ private:
+  virtual SoftwareSurfaceOzone* CreateSurface(
+    HardwareDisplayControllerOzone* controller);
+
+  virtual DrmWrapperOzone* CreateWrapper();
+
+  virtual bool InitializeControllerForPrimaryDisplay(
+    DrmWrapperOzone* drm,
+    HardwareDisplayControllerOzone* controller);
+
+  // Blocks until a DRM event is read.
+  // TODO(dnicoara) Remove once we can safely move DRM event processing in the
+  // message loop while correctly signaling when we're done displaying the
+  // pending frame.
+  virtual void WaitForPageFlipEvent(int fd);
+
+  scoped_ptr<DrmWrapperOzone> drm_;
+
+  HardwareState state_;
+
+  // Active output.
+  scoped_ptr<HardwareDisplayControllerOzone> controller_;
+
+
+  DISALLOW_COPY_AND_ASSIGN(SoftwareSurfaceFactoryOzone);
+};
+
+}  // namespace gfx
+
+#endif  // UI_GFX_OZONE_IMPL_SOFTWARE_SURFACE_FACTORY_OZONE_H_