ImageCapture: wire |colorTemperature| set/get for Linux/Cros

media/mojo/interfaces/image_capture.mojom

 // 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.
 
 module media.mojom;
 
 // Equivalent to idl MediaSettingsRange, arbitrary range representing the
 // allowed variations of a Capability or an Option.
 // https://www.w3.org/TR/image-capture/#MediaSettingsRange
 struct Range {
   int32 max;
   int32 min;
   int32 current;
 };
 
 // https://www.w3.org/TR/image-capture/#MeteringMode
 enum MeteringMode { NONE, MANUAL, SINGLE_SHOT, CONTINUOUS };
 
 // https://www.w3.org/TR/image-capture/#FillLightMode
 enum FillLightMode { NONE, OFF, AUTO, FLASH, TORCH };
 
 // Equivalent to idl PhotoCapabilities,
 // https://www.w3.org/TR/image-capture/#PhotoCapabilities
 struct PhotoCapabilities {
+  MeteringMode white_balance_mode;
+  Range color_temperature;
+  MeteringMode exposure_mode;
+  Range exposure_compensation;
   Range iso;
+  bool red_eye_reduction;
+  MeteringMode focus_mode;
+
   Range height;
   Range width;
   Range zoom;
-  MeteringMode focus_mode;
-  MeteringMode exposure_mode;
-  Range exposure_compensation;
-  MeteringMode white_balance_mode;
   FillLightMode fill_light_mode;
-  bool red_eye_reduction;
 };
 
 // Equivalent to idl Point2D.
 // TODO(mcasas): use gfx::mojom::PointF after https://crbug.com/640049.
 struct Point2D {
   float x;
   float y;
 };
 
 // Equivalent to idl PhotoSettings,
 // https://www.w3.org/TR/image-capture/#PhotoSettings
 struct PhotoSettings {
   // uint32 cannot be nullable, i.e. uint32? does not work, use instead a flag.
+  bool has_white_balance_mode;
+  MeteringMode white_balance_mode;
+  bool has_color_temperature;
+  uint32 color_temperature;
+  bool has_exposure_mode;
+  MeteringMode exposure_mode;
+  bool has_exposure_compensation;
+  uint32 exposure_compensation;
+  bool has_iso;
+  uint32 iso;
+  bool has_red_eye_reduction;
+  bool red_eye_reduction;
+  bool has_focus_mode;
+  MeteringMode focus_mode;
+  array<Point2D> points_of_interest;
+
   bool has_zoom;
   uint32 zoom;
   bool has_width;
   uint32 width;
   bool has_height;
   uint32 height;
-  bool has_focus_mode;
-  MeteringMode focus_mode;
-  bool has_exposure_mode;
-  MeteringMode exposure_mode;
-  bool has_exposure_compensation;
-  uint32 exposure_compensation;
-  bool has_white_balance_mode;
-  MeteringMode white_balance_mode;
-  bool has_iso;
-  uint32 iso;
-  bool has_red_eye_reduction;
-  bool red_eye_reduction;
   bool has_fill_light_mode;
   FillLightMode fill_light_mode;
-  array<Point2D> points_of_interest;
 };
 
 // This is a mojo move-only equivalent of a Blob, i.e. MIME type and Data.
 struct Blob {
   string mime_type;
   array<uint8> data;
 };
 
 // |source_id| is the renderer-side UUID identifier of the image capture device.
 interface ImageCapture
 {
     // Retrieves the image capture device capabilities and current settings.
     // https://www.w3.org/TR/image-capture/#dom-imagecapture-getphotocapabilities
     GetCapabilities(string source_id)
         => (PhotoCapabilities capabilities);
 
     // Sets the |settings| on the associated video capture device.
     // https://www.w3.org/TR/image-capture/#dom-imagecapture-setoptions
     SetOptions(string source_id, PhotoSettings settings)
         => (bool success);
 
     // Takes a Photo from the given |source_id|, returning it encoded in |blob|
     // with the format specified in its |mime_type|.
     // https://www.w3.org/TR/image-capture/#dom-imagecapture-takephoto
     TakePhoto(string source_id)
         => (Blob blob);
 };