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

ui/ozone/platform/drm/gpu/drm_device.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_DEVICE_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_DRM_DEVICE_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 140 matching lines @@
 
   virtual void DestroyDumbBuffer(const SkImageInfo& info,
                                  uint32_t handle,
                                  uint32_t stride,
                                  void* pixels);
 
   virtual bool CommitProperties(drmModePropertySet* properties,
                                 uint32_t flags,
                                 const PageFlipCallback& callback);
 
+  // Set the gamma ramp for |crtc_id| to reflect the ramps in |r|, |g| and |b|.
+  virtual bool SetGammaRamp(uint32_t crtc_id,
+                            std::vector<uint16_t> r,

[spang, 2015/04/17 17:04:51]

const &

(or if you do want it to copy, you should remove the const_casts)

[robert.bradford, 2015/04/17 17:17:48]

Whoops. Fixed now, thanks for checking this, I didn't want to copy as these
vectors will be relatively large.

+                            std::vector<uint16_t> g,
+                            std::vector<uint16_t> b);
+
   // Drm master related
   virtual bool SetMaster();
   virtual bool DropMaster();
 
   int get_fd() const { return file_.GetPlatformFile(); }
 
   base::FilePath device_path() const { return device_path_; }
 
   HardwareDisplayPlaneManager* plane_manager() { return plane_manager_.get(); }
 
@@ skipping 18 matching lines @@
 
   // Watcher for |fd_| listening for page flip events.
   scoped_refptr<IOWatcher> watcher_;
 
   DISALLOW_COPY_AND_ASSIGN(DrmDevice);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_DRM_DEVICE_H_