third_party/WebKit/Source/modules/mediasource/SourceBufferTrackBaseSupplement.h

// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SourceBufferTrackBaseSupplement_h
#define SourceBufferTrackBaseSupplement_h

#include "platform/Supplementable.h"
#include "wtf/Allocator.h"

namespace blink {

class TrackBase;
class SourceBuffer;

class SourceBufferTrackBaseSupplement
    : public GarbageCollected<SourceBufferTrackBaseSupplement>,
      public Supplement<TrackBase> {
  USING_GARBAGE_COLLECTED_MIXIN(SourceBufferTrackBaseSupplement);

 public:
  static SourceBuffer* sourceBuffer(TrackBase&);
  static void setSourceBuffer(TrackBase&, SourceBuffer*);

  DECLARE_VIRTUAL_TRACE();

 private:
  static SourceBufferTrackBaseSupplement& from(TrackBase&);
  static SourceBufferTrackBaseSupplement* fromIfExists(TrackBase&);

  Member<SourceBuffer> m_sourceBuffer;
};

}  // namespace blink

#endif