In-mus ozone drm platform implementation.

ui/ozone/platform/drm/mus_thread_proxy.h

+// Copyright 2016 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_MUS_THREAD_PROXY_H_
+#define UI_OZONE_PLATFORM_DRM_MUS_THREAD_PROXY_H_
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "base/observer_list.h"
+#include "base/synchronization/lock.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/ozone/platform/drm/gpu/inter_thread_messaging_proxy.h"
+#include "ui/ozone/platform/drm/host/drm_cursor.h"
+#include "ui/ozone/platform/drm/host/gpu_thread_adapter.h"
+
+namespace base {
+class SingleThreadTaskRunner;
+}
+
+namespace ui {
+
+class DrmCursor;
+class DrmDisplayHostManager;
+class DrmOverlayManager;
+class DrmThread;
+class GpuThreadObserver;
+
+// In Mus, the window server thread (analogous to Chrome's UI thread), GPU and
+// DRM threads coexist in a single Mus process. The |MusThreadProxy| connects
+// these threads together via cross-thread calls.
+class MusThreadProxy : public GpuThreadAdapter,
+                       public InterThreadMessagingProxy,
+                       public DrmCursorProxy {
+ public:
+  MusThreadProxy();
+  ~MusThreadProxy() override;
+
+  void StartDrmThread();
+  void ProvideManagers(DrmDisplayHostManager* display_manager,
+                       DrmOverlayManager* overlay_manager);
+
+  // InterThreadMessagingProxy.
+  void SetDrmThread(DrmThread* thread) override;
+
+  // This is the core functionality. They are invoked when we have a main
+  // thread, a gpu thread and we have called initialize on both.
+  void AddGpuThreadObserver(GpuThreadObserver* observer) override;
+  void RemoveGpuThreadObserver(GpuThreadObserver* observer) override;
+  bool IsConnected() override;
+
+  // Services needed for DrmDisplayHostMananger.
+  void RegisterHandlerForDrmDisplayHostManager(
+      DrmDisplayHostManager* handler) override;
+  void UnRegisterHandlerForDrmDisplayHostManager() override;
+
+  bool GpuTakeDisplayControl() override;
+  bool GpuRefreshNativeDisplays() override;
+  bool GpuRelinquishDisplayControl() override;
+  bool GpuAddGraphicsDevice(const base::FilePath& path,
+                            const base::FileDescriptor& fd) override;
+  bool GpuRemoveGraphicsDevice(const base::FilePath& path) override;
+
+  // Services needed for DrmOverlayManager.
+  void RegisterHandlerForDrmOverlayManager(DrmOverlayManager* handler) override;
+  void UnRegisterHandlerForDrmOverlayManager() override;
+
+  bool GpuCheckOverlayCapabilities(
+      gfx::AcceleratedWidget widget,
+      const std::vector<OverlayCheck_Params>& new_params) override;
+
+  // Services needed by DrmDisplayHost
+  bool GpuConfigureNativeDisplay(int64_t display_id,
+                                 const ui::DisplayMode_Params& display_mode,
+                                 const gfx::Point& point) override;
+  bool GpuDisableNativeDisplay(int64_t display_id) override;
+  bool GpuGetHDCPState(int64_t display_id) override;
+  bool GpuSetHDCPState(int64_t display_id, ui::HDCPState state) override;
+  bool GpuSetGammaRamp(int64_t display_id,
+                       const std::vector<GammaRampRGBEntry>& lut) override;
+
+  // Services needed by DrmWindowHost
+  bool GpuDestroyWindow(gfx::AcceleratedWidget widget) override;
+  bool GpuCreateWindow(gfx::AcceleratedWidget widget) override;
+  bool GpuWindowBoundsChanged(gfx::AcceleratedWidget widget,
+                              const gfx::Rect& bounds) override;
+
+  // DrmCursorProxy.
+  void CursorSet(gfx::AcceleratedWidget window,
+                 const std::vector<SkBitmap>& bitmaps,
+                 const gfx::Point& point,
+                 int frame_delay_ms) override;
+  void Move(gfx::AcceleratedWidget window, const gfx::Point& point) override;
+
+ private:
+  void RunObservers();
+  void DispatchObserversFromDrmThread();
+
+  void GpuCheckOverlayCapabilitiesCallback(
+      gfx::AcceleratedWidget widget,
+      const std::vector<OverlayCheck_Params>& overlays) const;
+
+  void GpuConfigureNativeDisplayCallback(int64_t display_id,
+                                         bool success) const;
+
+  void GpuRefreshNativeDisplaysCallback(
+      const std::vector<DisplaySnapshot_Params>& displays) const;
+  void GpuDisableNativeDisplayCallback(int64_t display_id, bool success) const;
+  void GpuTakeDisplayControlCallback(bool success) const;
+  void GpuRelinquishDisplayControlCallback(bool success) const;
+  void GpuGetHDCPStateCallback(int64_t display_id,
+                               bool success,
+                               HDCPState state) const;
+  void GpuSetHDCPStateCallback(int64_t display_id, bool success) const;
+
+  scoped_refptr<base::SingleThreadTaskRunner> ws_task_runner_;
+
+  DrmThread* drm_thread_;  // Not owned.
+
+  // Guards  for multi-theaded access to drm_thread_.
+  base::Lock lock_;
+
+  DrmDisplayHostManager* display_manager_;  // Not owned.
+  DrmOverlayManager* overlay_manager_;      // Not owned.
+
+  base::ObserverList<GpuThreadObserver> gpu_thread_observers_;
+
+  base::ThreadChecker on_window_server_thread_;
+
+  base::WeakPtrFactory<MusThreadProxy> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(MusThreadProxy);
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_PLATFORM_DRM_MUS_THREAD_PROXY_H_