// Copyright 2020 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 COMPONENTS_WEBRTC_MEDIA_STREAM_DEVICE_ENUMERATOR_H_ #define COMPONENTS_WEBRTC_MEDIA_STREAM_DEVICE_ENUMERATOR_H_ #include #include "third_party/blink/public/common/mediastream/media_stream_request.h" #include "third_party/blink/public/mojom/mediastream/media_stream.mojom-forward.h" namespace content { class BrowserContext; } namespace webrtc { // Enumerates system devices for MediaStreamDevicesController. class MediaStreamDeviceEnumerator { public: // Helper to get the default devices which can be used by the media request. // Uses the first available devices if the default devices are not available. // If the return list is empty, it means there is no available device on the // OS. virtual const blink::MediaStreamDevices& GetAudioCaptureDevices() const = 0; virtual const blink::MediaStreamDevices& GetVideoCaptureDevices() const = 0; // Helper to get the default devices which can be used by the media request. // Uses the first available devices if the default devices are not available. // If the return list is empty, it means there is no available device on the // OS. virtual void GetDefaultDevicesForBrowserContext( content::BrowserContext* context, bool audio, bool video, blink::mojom::StreamDevices& devices) = 0; // Helpers for picking particular requested devices, identified by raw id. // If the device requested is not available it will return nullptr. virtual const blink::MediaStreamDevice* GetRequestedAudioDevice( const std::string& requested_audio_device_id) = 0; virtual const blink::MediaStreamDevice* GetRequestedVideoDevice( const std::string& requested_video_device_id) = 0; protected: virtual ~MediaStreamDeviceEnumerator() = default; }; } // namespace webrtc #endif // COMPONENTS_WEBRTC_MEDIA_STREAM_DEVICE_ENUMERATOR_H_