/* * Copyright (C) 2015-2016 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #pragma once #if ENABLE(MEDIA_STREAM) #include "CaptureDevice.h" #include "RealtimeMediaSource.h" namespace WebCore { class CaptureDeviceManager { public: using CaptureDeviceChangedCallback = WTF::Function<void()>; using ObserverToken = uint32_t; virtual ObserverToken addCaptureDeviceChangedObserver(CaptureDeviceChangedCallback&&); virtual void removeCaptureDeviceChangedObserver(ObserverToken); virtual const Vector<CaptureDevice>& captureDevices() = 0; virtual std::optional<CaptureDevice> captureDeviceWithPersistentID(CaptureDevice::DeviceType, const String&) { return std::nullopt; } virtual void refreshCaptureDevices() { } protected: virtual ~CaptureDeviceManager(); CaptureDevice captureDeviceFromPersistentID(const String& captureDeviceID); HashMap<ObserverToken, CaptureDeviceChangedCallback> m_observers; }; } // namespace WebCore #endif // ENABLE(MEDIA_STREAM)