1/*
2 * Copyright (C) 2011 Ericsson AB. All rights reserved.
3 * Copyright (C) 2012 Google 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#ifndef MediaStreamCenter_h
33#define MediaStreamCenter_h
34
35#if ENABLE(MEDIA_STREAM)
36
37#include <wtf/PassRefPtr.h>
38#include <wtf/text/WTFString.h>
39
40namespace WebCore {
41
42class MediaStreamComponent;
43class MediaStreamDescriptor;
44class MediaStreamSourcesQueryClient;
45
46class MediaStreamCenter {
47public:
48    virtual ~MediaStreamCenter();
49
50    static MediaStreamCenter& instance();
51
52    virtual void queryMediaStreamSources(PassRefPtr<MediaStreamSourcesQueryClient>) = 0;
53
54    // FIXME: add a way to mute a MediaStreamSource from the WebKit API layer
55
56    // Calls from the DOM objects to notify the platform
57    virtual void didSetMediaStreamTrackEnabled(MediaStreamDescriptor*, MediaStreamComponent*) = 0;
58    virtual bool didAddMediaStreamTrack(MediaStreamDescriptor*, MediaStreamComponent*) = 0;
59    virtual bool didRemoveMediaStreamTrack(MediaStreamDescriptor*, MediaStreamComponent*) = 0;
60    virtual void didStopLocalMediaStream(MediaStreamDescriptor*) = 0;
61    virtual void didCreateMediaStream(MediaStreamDescriptor*) = 0;
62
63protected:
64    MediaStreamCenter();
65
66    void endLocalMediaStream(MediaStreamDescriptor*);
67    void addMediaStreamTrack(MediaStreamDescriptor*, MediaStreamComponent*);
68    void removeMediaStreamTrack(MediaStreamDescriptor*, MediaStreamComponent*);
69};
70
71} // namespace WebCore
72
73#endif // ENABLE(MEDIA_STREAM)
74
75#endif // MediaStreamCenter_h
76