Source/WebCore/Modules/mediasource/SourceBufferList.h

/*
 * 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. 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,
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 */

#pragma once

#if ENABLE(MEDIA_SOURCE)

#include "ActiveDOMObject.h"
#include "EventTarget.h"
#include "GenericEventQueue.h"
#include <wtf/RefCounted.h>
#include <wtf/Vector.h>

namespace WebCore {

class SourceBuffer;

class SourceBufferList final : public RefCounted<SourceBufferList>, public EventTargetWithInlineData, public ActiveDOMObject {
    WTF_MAKE_ISO_ALLOCATED(SourceBufferList);
public:
    static Ref<SourceBufferList> create(ScriptExecutionContext* context)
    {
        return adoptRef(*new SourceBufferList(context));
    }
    virtual ~SourceBufferList();

    unsigned long length() const { return m_list.size(); }
    SourceBuffer* item(unsigned long index) const { return (index < m_list.size()) ? m_list[index].get() : nullptr; }

    void add(Ref<SourceBuffer>&&);
    void remove(SourceBuffer&);
    bool contains(SourceBuffer& buffer) { return m_list.find(&buffer) != notFound; }
    void clear();
    void swap(Vector<RefPtr<SourceBuffer>>&);

    Vector<RefPtr<SourceBuffer>>::iterator begin() { return m_list.begin(); }
    Vector<RefPtr<SourceBuffer>>::iterator end() { return m_list.end(); }

    // EventTarget interface
    EventTargetInterface eventTargetInterface() const final { return SourceBufferListEventTargetInterfaceType; }
    ScriptExecutionContext* scriptExecutionContext() const final { return ContextDestructionObserver::scriptExecutionContext(); }

    using RefCounted<SourceBufferList>::ref;
    using RefCounted<SourceBufferList>::deref;

private:
    explicit SourceBufferList(ScriptExecutionContext*);

    void scheduleEvent(const AtomString&);

    void refEventTarget() override { ref(); }
    void derefEventTarget() override { deref(); }

    const char* activeDOMObjectName() const final;

    UniqueRef<MainThreadGenericEventQueue> m_asyncEventQueue;

    Vector<RefPtr<SourceBuffer>> m_list;
};

} // namespace WebCore

#endif // ENABLE(MEDIA_SOURCE)