// 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 CEF_LIBCEF_BROWSER_MEDIA_CAPTURE_DEVICES_DISPATCHER_H_ #define CEF_LIBCEF_BROWSER_MEDIA_CAPTURE_DEVICES_DISPATCHER_H_ #include "base/callback.h" #include "base/memory/scoped_ptr.h" #include "base/memory/singleton.h" #include "base/observer_list.h" #include "content/public/browser/media_observer.h" #include "content/public/common/media_stream_request.h" class PrefRegistrySimple; class PrefService; // This singleton is used to receive updates about media events from the content // layer. Based on chrome/browser/media/media_capture_devices_dispatcher.[h|cc]. class CefMediaCaptureDevicesDispatcher : public content::MediaObserver { public: static CefMediaCaptureDevicesDispatcher* GetInstance(); // Registers the preferences related to Media Stream default devices. static void RegisterPrefs(PrefRegistrySimple* registry); // Helper to get the default devices which can be used by the media request, // if the return list is empty, it means there is no available device on the // OS. Called on the UI thread. void GetDefaultDevices(PrefService* prefs, bool audio, bool video, content::MediaStreamDevices* devices); // Helper for picking the device that was requested for an OpenDevice request. // If the device requested is not available it will revert to using the first // available one instead or will return an empty list if no devices of the // requested kind are present. Called on the UI thread. void GetRequestedDevice(const std::string& requested_device_id, bool audio, bool video, content::MediaStreamDevices* devices); // Overridden from content::MediaObserver: void OnAudioCaptureDevicesChanged() override; void OnVideoCaptureDevicesChanged() override; void OnMediaRequestStateChanged( int render_process_id, int render_frame_id, int page_request_id, const GURL& security_origin, content::MediaStreamType stream_type, content::MediaRequestState state) override; void OnCreatingAudioStream(int render_process_id, int render_view_id) override; private: friend struct base::DefaultSingletonTraits; CefMediaCaptureDevicesDispatcher(); ~CefMediaCaptureDevicesDispatcher() override; const content::MediaStreamDevices& GetAudioCaptureDevices(); const content::MediaStreamDevices& GetVideoCaptureDevices(); }; #endif // CEF_LIBCEF_BROWSER_MEDIA_CAPTURE_DEVICES_DISPATCHER_H_