blob: 1104206141e14e3f5bb0eaaf987c3f5cbb156a9c [file] [log] [blame]
// 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 "base/callback.h"
#include "base/memory/singleton.h"
#include "base/observer_list.h"
#include "content/public/browser/media_observer.h"
#include "content/public/browser/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 {
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,
blink::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,
blink::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,
blink::mojom::MediaStreamType stream_type,
content::MediaRequestState state) override;
void OnCreatingAudioStream(int render_process_id,
int render_view_id) override;
void OnSetCapturingLinkSecured(int render_process_id,
int render_frame_id,
int page_request_id,
blink::mojom::MediaStreamType stream_type,
bool is_secure) override;
friend struct base::DefaultSingletonTraits<CefMediaCaptureDevicesDispatcher>;
~CefMediaCaptureDevicesDispatcher() override;
const blink::MediaStreamDevices& GetAudioCaptureDevices();
const blink::MediaStreamDevices& GetVideoCaptureDevices();