/*
* Copyright (C) 2011 Ericsson AB. All rights reserved.
* Copyright (C) 2013 Google 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.
* 3. Neither the name of Ericsson nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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.
*/
#ifndef MediaStreamComponent_h
#define MediaStreamComponent_h
#include "platform/audio/AudioSourceProvider.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/ThreadingPrimitives.h"
#include "wtf/text/WTFString.h"
namespace blink {
class WebAudioSourceProvider;
}
namespace WebCore {
class MediaStreamDescriptor;
class MediaStreamSource;
class PLATFORM_EXPORT MediaStreamComponent : public RefCounted<MediaStreamComponent> {
public:
class ExtraData {
public:
virtual ~ExtraData() { }
};
static PassRefPtr<MediaStreamComponent> create(PassRefPtr<MediaStreamSource>);
static PassRefPtr<MediaStreamComponent> create(const String& id, PassRefPtr<MediaStreamSource>);
MediaStreamSource* source() const { return m_source.get(); }
String id() const { return m_id; }
bool enabled() const { return m_enabled; }
void setEnabled(bool enabled) { m_enabled = enabled; }
#if ENABLE(WEB_AUDIO)
AudioSourceProvider* audioSourceProvider() { return &m_sourceProvider; }
void setSourceProvider(blink::WebAudioSourceProvider* provider) { m_sourceProvider.wrap(provider); }
#endif // ENABLE(WEB_AUDIO)
ExtraData* extraData() const { return m_extraData.get(); }
void setExtraData(PassOwnPtr<ExtraData> extraData) { m_extraData = extraData; }
private:
MediaStreamComponent(const String& id, PassRefPtr<MediaStreamSource>);
#if ENABLE(WEB_AUDIO)
// AudioSourceProviderImpl wraps a WebAudioSourceProvider::provideInput()
// calls into chromium to get a rendered audio stream.
class AudioSourceProviderImpl FINAL: public AudioSourceProvider {
public:
AudioSourceProviderImpl()
: m_webAudioSourceProvider(0)
{
}
virtual ~AudioSourceProviderImpl() { }
// Wraps the given blink::WebAudioSourceProvider to WebCore::AudioSourceProvider.
void wrap(blink::WebAudioSourceProvider*);
// WebCore::AudioSourceProvider
virtual void provideInput(WebCore::AudioBus*, size_t framesToProcess) OVERRIDE;
private:
blink::WebAudioSourceProvider* m_webAudioSourceProvider;
Mutex m_provideInputLock;
};
AudioSourceProviderImpl m_sourceProvider;
#endif // ENABLE(WEB_AUDIO)
RefPtr<MediaStreamSource> m_source;
String m_id;
bool m_enabled;
OwnPtr<ExtraData> m_extraData;
};
typedef Vector<RefPtr<MediaStreamComponent> > MediaStreamComponentVector;
} // namespace WebCore
#endif // MediaStreamComponent_h