Make Pepper use Mojo-based support for media-device enumeration and monitoring.

content/renderer/pepper/pepper_media_device_manager.h

 // 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.
 
 #ifndef CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_DEVICE_MANAGER_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_DEVICE_MANAGER_H_
 
 #include <map>
+#include <string>
+#include <vector>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
+#include "content/common/media/media_devices.h"
+#include "content/common/media/media_devices.mojom.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "content/public/renderer/render_frame_observer_tracker.h"
 #include "content/renderer/media/media_stream_dispatcher_eventhandler.h"
 #include "content/renderer/pepper/pepper_device_enumeration_host_helper.h"
 
 namespace content {
 class MediaStreamDispatcher;
 
 class PepperMediaDeviceManager
     : public MediaStreamDispatcherEventHandler,
       public PepperDeviceEnumerationHostHelper::Delegate,
       public RenderFrameObserver,
       public RenderFrameObserverTracker<PepperMediaDeviceManager>,
       public base::SupportsWeakPtr<PepperMediaDeviceManager> {
  public:
   static base::WeakPtr<PepperMediaDeviceManager> GetForRenderFrame(
       RenderFrame* render_frame);
   ~PepperMediaDeviceManager() override;
 
   // PepperDeviceEnumerationHostHelper::Delegate implementation:
-  int EnumerateDevices(PP_DeviceType_Dev type,
-                       const GURL& document_url,
-                       const EnumerateDevicesCallback& callback) override;
-  void StopEnumerateDevices(int request_id) override;
+  void EnumerateDevices(PP_DeviceType_Dev type,
+                        const GURL& document_url,
+                        const DevicesCallback& callback) override;
+  uint32_t StartMonitoringDevices(PP_DeviceType_Dev type,
+                                  const GURL& document_url,
+                                  const DevicesCallback& callback) override;
+  void StopMonitoringDevices(PP_DeviceType_Dev type,
+                             uint32_t subscription_id) override;
 
   typedef base::Callback<void(int /* request_id */,
                               bool /* succeeded */,
                               const std::string& /* label */)>
       OpenDeviceCallback;
 
   // Opens the specified device. The request ID passed into the callback will be
   // the same as the return value. If successful, the label passed into the
   // callback identifies a audio/video steam, which can be used to call
   // CloseDevice() and GetSesssionID().
@@ skipping 23 matching lines @@
   void OnDevicesEnumerated(int request_id,
                            const StreamDeviceInfoArray& device_array) override;
   void OnDeviceOpened(int request_id,
                       const std::string& label,
                       const StreamDeviceInfo& device_info) override;
   void OnDeviceOpenFailed(int request_id) override;
   void OnDevicesChanged() override;
 
   // Stream type conversion.
   static MediaStreamType FromPepperDeviceType(PP_DeviceType_Dev type);
-  static PP_DeviceType_Dev FromMediaStreamType(MediaStreamType type);
 
  private:
   explicit PepperMediaDeviceManager(RenderFrame* render_frame);
 
   // RenderFrameObserver implementation.
   void OnDestruct() override;
 
   // Called by StopEnumerateDevices() after returing to the event loop, to avoid
   // a reentrancy problem.
   void StopEnumerateDevicesDelayed(int request_id);
 
   void NotifyDeviceOpened(int request_id,
                           bool succeeded,
                           const std::string& label);
 
+  void DevicesEnumerated(const DevicesCallback& callback,
+                         MediaDeviceType type,
+                         const std::vector<MediaDeviceInfoArray>& enumeration);
+
+  void DevicesChanged(const DevicesCallback& callback,
+                      MediaDeviceType type,
+                      const MediaDeviceInfoArray& enumeration);
 
   MediaStreamDispatcher* GetMediaStreamDispatcher() const;
+  const ::mojom::MediaDevicesDispatcherHostPtr& GetMediaDevicesDispatcher();
 
   int next_id_;
 
-  typedef std::map<int, EnumerateDevicesCallback> EnumerateCallbackMap;
-  EnumerateCallbackMap enumerate_callbacks_;
-
   typedef std::map<int, OpenDeviceCallback> OpenCallbackMap;
   OpenCallbackMap open_callbacks_;
 
+  ::mojom::MediaDevicesDispatcherHostPtr media_devices_dispatcher_;
+
   DISALLOW_COPY_AND_ASSIGN(PepperMediaDeviceManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_DEVICE_MANAGER_H_