1/*
2 * Copyright (C) 2011 Ericsson AB. All rights reserved.
3 * Copyright (C) 2016-2018 Apple Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 * 3. Neither the name of Ericsson nor the names of its contributors
16 * may be used to endorse or promote products derived from this
17 * software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#pragma once
33
34#if ENABLE(MEDIA_STREAM)
35
36#include <wtf/ObjectIdentifier.h>
37
38namespace WebCore {
39
40class MediaDevicesEnumerationRequest;
41class Page;
42class UserMediaRequest;
43
44class UserMediaClient {
45public:
46 virtual void pageDestroyed() = 0;
47
48 virtual void requestUserMediaAccess(UserMediaRequest&) = 0;
49 virtual void cancelUserMediaAccessRequest(UserMediaRequest&) = 0;
50
51 virtual void enumerateMediaDevices(MediaDevicesEnumerationRequest&) = 0;
52 virtual void cancelMediaDevicesEnumerationRequest(MediaDevicesEnumerationRequest&) = 0;
53
54 enum DeviceChangeObserverTokenType { };
55 using DeviceChangeObserverToken = ObjectIdentifier<DeviceChangeObserverTokenType>;
56 virtual DeviceChangeObserverToken addDeviceChangeObserver(WTF::Function<void()>&&) = 0;
57 virtual void removeDeviceChangeObserver(DeviceChangeObserverToken) = 0;
58
59protected:
60 virtual ~UserMediaClient() = default;
61};
62
63WEBCORE_EXPORT void provideUserMediaTo(Page*, UserMediaClient*);
64
65} // namespace WebCore
66
67#endif // ENABLE(MEDIA_STREAM)
68