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/*
* Copyright (C) 2011 Ericsson AB. All rights reserved.
* Copyright (C) 2012 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 MediaStreamSource_h
#define MediaStreamSource_h
#include "platform/PlatformExport.h"
#include "platform/audio/AudioDestinationConsumer.h"
#include "public/platform/WebMediaConstraints.h"
#include "wtf/OwnPtr.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/ThreadingPrimitives.h"
#include "wtf/Vector.h"
#include "wtf/text/WTFString.h"
namespace blink {
class PLATFORM_EXPORT MediaStreamSource FINAL : public RefCounted<MediaStreamSource> {
public:
class Observer {
public:
virtual ~Observer() { }
virtual void sourceChangedState() = 0;
};
class ExtraData {
public:
virtual ~ExtraData() { }
};
enum Type {
TypeAudio,
TypeVideo
};
enum ReadyState {
ReadyStateLive = 0,
ReadyStateMuted = 1,
ReadyStateEnded = 2
};
static PassRefPtr<MediaStreamSource> create(const String& id, Type, const String& name, ReadyState = ReadyStateLive, bool requiresConsumer = false);
const String& id() const { return m_id; }
Type type() const { return m_type; }
const String& name() const { return m_name; }
void setReadyState(ReadyState);
ReadyState readyState() const { return m_readyState; }
void addObserver(Observer*);
void removeObserver(Observer*);
ExtraData* extraData() const { return m_extraData.get(); }
void setExtraData(PassOwnPtr<ExtraData> extraData) { m_extraData = extraData; }
void setConstraints(blink::WebMediaConstraints constraints) { m_constraints = constraints; }
blink::WebMediaConstraints constraints() { return m_constraints; }
void setAudioFormat(size_t numberOfChannels, float sampleRate);
void consumeAudio(AudioBus*, size_t numberOfFrames);
bool requiresAudioConsumer() const { return m_requiresConsumer; }
void addAudioConsumer(PassRefPtr<AudioDestinationConsumer>);
bool removeAudioConsumer(AudioDestinationConsumer*);
const Vector<RefPtr<AudioDestinationConsumer> >& audioConsumers() { return m_audioConsumers; }
private:
MediaStreamSource(const String& id, Type, const String& name, ReadyState, bool requiresConsumer);
String m_id;
Type m_type;
String m_name;
ReadyState m_readyState;
bool m_requiresConsumer;
Vector<Observer*> m_observers;
Mutex m_audioConsumersLock;
Vector<RefPtr<AudioDestinationConsumer> > m_audioConsumers;
OwnPtr<ExtraData> m_extraData;
blink::WebMediaConstraints m_constraints;
};
typedef Vector<RefPtr<MediaStreamSource> > MediaStreamSourceVector;
} // namespace blink
#endif // MediaStreamSource_h