Image Capture: fill in PhotoCapabilities.{height,width} in Linux/CrOs/Mac

media/capture/video/mac/video_capture_device_mac.mm

 // Copyright (c) 2012 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.
 
 #include "media/capture/video/mac/video_capture_device_mac.h"
 
 #include <IOKit/IOCFPlugIn.h>
 #include <IOKit/usb/IOUSBLib.h>
 #include <IOKit/usb/USBSpec.h>
 #include <stddef.h>
@@ skipping 366 matching lines @@
   DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK(state_ == kCapturing) << state_;
 
   if (photo_callback_)  // Only one picture can be in flight at a time.
     return;
 
   photo_callback_.reset(new TakePhotoCallback(std::move(callback)));
   [capture_device_ takePhoto];
 }
 
+void VideoCaptureDeviceMac::GetPhotoCapabilities(
+    GetPhotoCapabilitiesCallback callback) {
+  DCHECK(task_runner_->BelongsToCurrentThread());
+
+  auto photo_capabilities = mojom::PhotoCapabilities::New();
+
+  photo_capabilities->exposure_compensation = mojom::Range::New();
+  photo_capabilities->color_temperature = mojom::Range::New();
+  photo_capabilities->iso = mojom::Range::New();
+
+  photo_capabilities->brightness = mojom::Range::New();
+  photo_capabilities->contrast = mojom::Range::New();
+  photo_capabilities->saturation = mojom::Range::New();
+  photo_capabilities->sharpness = mojom::Range::New();
+
+  photo_capabilities->zoom = mojom::Range::New();
+
+  photo_capabilities->red_eye_reduction = mojom::RedEyeReduction::NEVER;
+  photo_capabilities->height = mojom::Range::New(
+      capture_format_.frame_size.height(), capture_format_.frame_size.height(),
+      capture_format_.frame_size.height(), 0 /* step */);
+  photo_capabilities->width = mojom::Range::New(
+      capture_format_.frame_size.width(), capture_format_.frame_size.width(),
+      capture_format_.frame_size.width(), 0 /* step */);
+  photo_capabilities->torch = false;
+
+  callback.Run(std::move(photo_capabilities));
+}
+
 bool VideoCaptureDeviceMac::Init(VideoCaptureApi capture_api_type) {
   DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK_EQ(state_, kNotInitialized);
 
   if (capture_api_type != VideoCaptureApi::MACOSX_AVFOUNDATION)
     return false;
 
   capture_device_.reset(
       [[VideoCaptureDeviceAVFoundation alloc] initWithFrameReceiver:this]);
 
@@ skipping 92 matching lines @@
   if (![capture_device_ setCaptureHeight:capture_format_.frame_size.height()
                                    width:capture_format_.frame_size.width()
                                frameRate:capture_format_.frame_rate]) {
     ReceiveError(FROM_HERE, "Could not configure capture device.");
     return false;
   }
   return true;
 }
 
 }  // namespace media