1/*
2 * Copyright (C) 2013 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef MediaStreamAudioSource_h
27#define MediaStreamAudioSource_h
28
29#if ENABLE(MEDIA_STREAM)
30
31#include "AudioDestinationConsumer.h"
32#include "MediaStreamSource.h"
33#include <wtf/RefCounted.h>
34#include <wtf/ThreadingPrimitives.h>
35#include <wtf/Vector.h>
36#include <wtf/text/WTFString.h>
37
38namespace WebCore {
39
40class AudioBus;
41class MediaStreamSourceCapabilities;
42
43class MediaStreamAudioSource : public MediaStreamSource {
44public:
45    static RefPtr<MediaStreamAudioSource> create();
46
47    ~MediaStreamAudioSource() { }
48
49    virtual bool useIDForTrackID() const { return true; }
50
51    virtual RefPtr<MediaStreamSourceCapabilities> capabilities() const;
52    virtual const MediaStreamSourceStates& states();
53
54    const String& deviceId() const { return m_deviceId; }
55    void setDeviceId(const String& deviceId) { m_deviceId = deviceId; }
56
57    void setAudioFormat(size_t numberOfChannels, float sampleRate);
58    void consumeAudio(AudioBus*, size_t numberOfFrames);
59
60    void addAudioConsumer(PassRefPtr<AudioDestinationConsumer>);
61    bool removeAudioConsumer(AudioDestinationConsumer*);
62    const Vector<RefPtr<AudioDestinationConsumer>>& audioConsumers() const { return m_audioConsumers; }
63
64private:
65    MediaStreamAudioSource();
66
67    String m_deviceId;
68    Mutex m_audioConsumersLock;
69    Vector<RefPtr<AudioDestinationConsumer>> m_audioConsumers;
70    MediaStreamSourceStates m_currentStates;
71};
72
73} // namespace WebCore
74
75#endif // ENABLE(MEDIA_STREAM)
76
77#endif // MediaStreamAudioSource_h
78