Load and apply a vcgt table from an ICC file to the internal display

ui/ozone/platform/drm/gpu/drm_gpu_display_manager.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_DRM_GPU_DISPLAY_MANAGER_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_DRM_GPU_DISPLAY_MANAGER_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "ui/ozone/common/gpu/ozone_gpu_message_params.h"
 
 namespace base {
 class FilePath;
 class SingleThreadTaskRunner;
 struct FileDescriptor;
 }
 
 namespace ui {
 
 class DeviceManager;
 class DisplayMode;
 class DrmDevice;
 class DrmDeviceGenerator;
 class DrmDisplaySnapshot;
 class DrmDisplayMode;
 class ScreenManager;
 
+struct GammaRampRGBEntry;
+
 class DrmGpuDisplayManager {
  public:
   DrmGpuDisplayManager(ScreenManager* screen_manager,
                        const scoped_refptr<DrmDevice>& primary_device,
                        scoped_ptr<DrmDeviceGenerator> device_generator);
   ~DrmGpuDisplayManager();
 
   void InitializeIOTaskRunner(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
 
   // Returns a list of the connected displays. When this is called the list of
   // displays is refreshed.
   std::vector<DisplaySnapshot_Params> GetDisplays();
 
   bool ConfigureDisplay(int64_t id,
                         const DisplayMode_Params& mode,
                         const gfx::Point& origin);
   bool DisableDisplay(int64_t id);
 
   // Takes/releases the control of the DRM devices.
   bool TakeDisplayControl();
   bool RelinquishDisplayControl();
 
   // Called on DRM hotplug events to add/remove a DRM device.
   void AddGraphicsDevice(const base::FilePath& path,
                          const base::FileDescriptor& fd);
   void RemoveGraphicsDevice(const base::FilePath& path);
 
+  // Set the gamma ramp for a particular display id.
+  void SetGammaRamp(int64_t id, const std::vector<GammaRampRGBEntry>& lut);
+
  private:
   DrmDisplaySnapshot* FindDisplaySnapshot(int64_t id);
   const DrmDisplayMode* FindDisplayMode(const gfx::Size& size,
                                         bool is_interlaced,
                                         float refresh_rate);
 
   void RefreshDisplayList();
   bool Configure(const DrmDisplaySnapshot& output,
                  const DrmDisplayMode* mode,
                  const gfx::Point& origin);
@@ skipping 15 matching lines @@
   // of them independently for cleanup.
   ScopedVector<const DisplayMode> cached_modes_;
   ScopedVector<DrmDisplaySnapshot> cached_displays_;
 
   DISALLOW_COPY_AND_ASSIGN(DrmGpuDisplayManager);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_DRM_GPU_DISPLAY_MANAGER_H_