Add a ChromeOS implementation of VideoCaptureDevice

content/browser/renderer_host/media/media_stream_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.
 
 // MediaStreamManager is used to open/enumerate media capture devices (video
 // supported now). Call flow:
 // 1. GenerateStream is called when a render process wants to use a capture
 //    device.
 // 2. MediaStreamManager will ask MediaStreamUIController for permission to
 //    use devices and for which device to use.
@@ skipping 23 matching lines @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/power_monitor/power_observer.h"
 #include "base/system_monitor/system_monitor.h"
 #include "content/browser/renderer_host/media/media_stream_provider.h"
 #include "content/common/content_export.h"
 #include "content/common/media/media_stream_options.h"
 #include "content/public/browser/media_request_state.h"
 #include "content/public/browser/resource_context.h"
+#include "ui/gfx/display.h"
+#include "ui/gfx/display_observer.h"
 
 namespace media {
 class AudioManager;
 }
 
 namespace content {
 
 class AudioInputDeviceManager;
 class FakeMediaStreamUIProxy;
 class MediaStreamDeviceSettings;
 class MediaStreamRequester;
 class MediaStreamUIProxy;
 class VideoCaptureManager;
 
 // MediaStreamManager is used to generate and close new media devices, not to
 // start the media flow. The classes requesting new media streams are answered
 // using MediaStreamRequester.
 class CONTENT_EXPORT MediaStreamManager
     : public MediaStreamProviderListener,
       public base::MessageLoop::DestructionObserver,
       public base::PowerObserver,
-      public base::SystemMonitor::DevicesChangedObserver {
+      public base::SystemMonitor::DevicesChangedObserver,
+      public gfx::DisplayObserver {
  public:
   // Callback to deliver the result of a media request.
   typedef base::Callback<void(const MediaStreamDevices& devices,
                               scoped_ptr<MediaStreamUIProxy> ui)>
       MediaRequestResponseCallback;
 
   explicit MediaStreamManager(media::AudioManager* audio_manager);
   virtual ~MediaStreamManager();
 
   // Used to access VideoCaptureManager.
@@ skipping 268 matching lines @@
   // the webrtcLoggingPrivate API if requested.
   void AddLogMessageOnUIThread(const std::set<int>& render_process_ids,
                                const std::string& message);
 
   // Handles the callback from MediaStreamUIProxy to receive the UI window id,
   // used for excluding the notification window in desktop capturing.
   void OnMediaStreamUIWindowId(MediaStreamType video_type,
                                StreamDeviceInfoArray devices,
                                gfx::NativeViewId window_id);
 
+  // gfx::DisplayObserver:
+  virtual void OnDisplayBoundsChanged(const gfx::Display& display) OVERRIDE;
+  virtual void OnDisplayAdded(const gfx::Display& new_display) OVERRIDE;
+  virtual void OnDisplayRemoved(const gfx::Display& old_display) OVERRIDE;
+
+  void SetDisplayRotationOnIOThread(gfx::Display::Rotation rotation);
+
   // Task runner shared by VideoCaptureManager and AudioInputDeviceManager.
   // Note: Enumeration tasks may take seconds to complete so must never be run
   // on any of the BrowserThreads (UI, IO, etc).  See http://crbug.com/256945.
   scoped_refptr<base::SingleThreadTaskRunner> device_task_runner_;
 
   media::AudioManager* const audio_manager_;  // not owned
   scoped_refptr<AudioInputDeviceManager> audio_input_device_manager_;
   scoped_refptr<VideoCaptureManager> video_capture_manager_;
 
   // Indicator of device monitoring state.
   bool monitoring_started_;
 
   // Stores most recently enumerated device lists. The cache is cleared when
   // monitoring is stopped or there is no request for that type of device.
   EnumerationCache audio_enumeration_cache_;
   EnumerationCache video_enumeration_cache_;
 
   // Keeps track of live enumeration commands sent to VideoCaptureManager or
   // AudioInputDeviceManager, in order to only enumerate when necessary.
   int active_enumeration_ref_count_[NUM_MEDIA_TYPES];
 
   // All non-closed request. Must be accessed on IO thread.
   DeviceRequests requests_;
 
   // Hold a pointer to the IO loop to check we delete the device thread and
   // managers on the right thread.
   base::MessageLoop* io_loop_;
 
+  bool observing_screen_;
   bool use_fake_ui_;
   scoped_ptr<FakeMediaStreamUIProxy> fake_ui_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_MANAGER_H_