/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef RESOURCESTREAM_H_

#define RESOURCESTREAM_H_

#include "MediaResource.h"

#include "ByteStream.h"

#include "mozilla/RefPtr.h"

namespace mozilla

{

DDLoggedTypeDeclNameAndBase(ResourceStream, ByteStream);

class ResourceStream

  : public ByteStream

  , public DecoderDoctorLifeLogger<ResourceStream>

{

public:

  explicit ResourceStream(mozilla::MediaResource* aResource);

  virtual bool ReadAt(int64_t offset, void* aBuffer, size_t aCount,

                      size_t* aBytesRead) override;

  virtual bool CachedReadAt(int64_t aOffset, void* aBuffer, size_t aCount,

                            size_t* aBytesRead) override;

  virtual bool Length(int64_t* size) override;

  void Pin()

  {

    mResource.GetResource()->Pin();

    ++mPinCount;

  }

  void Unpin()

  {

    mResource.GetResource()->Unpin();

    MOZ_ASSERT(mPinCount);

    --mPinCount;

  }

protected:

  virtual ~ResourceStream();

private:

  mozilla::MediaResourceIndex mResource;

  uint32_t mPinCount;

};

}

#endif // RESOURCESTREAM_H_