2 * Copyright (C) 2011 Ericsson AB. All rights reserved.
3 * Copyright (C) 2013 Google Inc. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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
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13 * in the documentation and/or other materials provided with the
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.
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
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32 #ifndef MediaStreamComponent_h
33 #define MediaStreamComponent_h
35 #include "platform/audio/AudioSourceProvider.h"
36 #include "wtf/PassOwnPtr.h"
37 #include "wtf/PassRefPtr.h"
38 #include "wtf/RefCounted.h"
39 #include "wtf/ThreadingPrimitives.h"
40 #include "wtf/text/WTFString.h"
43 class WebAudioSourceProvider;
48 class MediaStreamDescriptor;
49 class MediaStreamSource;
51 class PLATFORM_EXPORT MediaStreamComponent : public RefCounted<MediaStreamComponent> {
55 virtual ~ExtraData() { }
58 static PassRefPtr<MediaStreamComponent> create(PassRefPtr<MediaStreamSource>);
59 static PassRefPtr<MediaStreamComponent> create(const String& id, PassRefPtr<MediaStreamSource>);
61 MediaStreamSource* source() const { return m_source.get(); }
63 String id() const { return m_id; }
64 bool enabled() const { return m_enabled; }
65 void setEnabled(bool enabled) { m_enabled = enabled; }
66 bool muted() const { return m_muted; }
69 AudioSourceProvider* audioSourceProvider() { return &m_sourceProvider; }
70 void setSourceProvider(blink::WebAudioSourceProvider* provider) { m_sourceProvider.wrap(provider); }
71 #endif // ENABLE(WEB_AUDIO)
73 ExtraData* extraData() const { return m_extraData.get(); }
74 void setExtraData(PassOwnPtr<ExtraData> extraData) { m_extraData = extraData; }
77 MediaStreamComponent(const String& id, PassRefPtr<MediaStreamSource>);
80 // AudioSourceProviderImpl wraps a WebAudioSourceProvider::provideInput()
81 // calls into chromium to get a rendered audio stream.
83 class PLATFORM_EXPORT AudioSourceProviderImpl FINAL: public AudioSourceProvider {
85 AudioSourceProviderImpl()
86 : m_webAudioSourceProvider(0)
90 virtual ~AudioSourceProviderImpl() { }
92 // Wraps the given blink::WebAudioSourceProvider to blink::AudioSourceProvider.
93 void wrap(blink::WebAudioSourceProvider*);
95 // blink::AudioSourceProvider
96 virtual void provideInput(blink::AudioBus*, size_t framesToProcess) OVERRIDE;
99 blink::WebAudioSourceProvider* m_webAudioSourceProvider;
100 Mutex m_provideInputLock;
103 AudioSourceProviderImpl m_sourceProvider;
104 #endif // ENABLE(WEB_AUDIO)
106 RefPtr<MediaStreamSource> m_source;
110 OwnPtr<ExtraData> m_extraData;
113 typedef Vector<RefPtr<MediaStreamComponent> > MediaStreamComponentVector;
117 #endif // MediaStreamComponent_h