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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 mozilla_mscom_ProxyStream_h
#define mozilla_mscom_ProxyStream_h
#include "ipc/IPCMessageUtils.h"
#include "mozilla/mscom/Ptr.h"
#include "mozilla/RefPtr.h"
#include "mozilla/UniquePtr.h"
namespace mozilla {
namespace mscom {
class ProxyStream
{
public:
ProxyStream();
ProxyStream(REFIID aIID, IUnknown* aObject);
ProxyStream(const BYTE* aInitBuf, const int aInitBufSize);
~ProxyStream();
// Not copyable because this would mess up the COM marshaling.
ProxyStream(const ProxyStream& aOther) = delete;
ProxyStream& operator=(const ProxyStream& aOther) = delete;
ProxyStream(ProxyStream&& aOther);
ProxyStream& operator=(ProxyStream&& aOther);
inline bool IsValid() const
{
// This check must be exclusive OR
return (mStream && !mUnmarshaledProxy) || (mUnmarshaledProxy && !mStream);
}
bool GetInterface(REFIID aIID, void** aOutInterface) const;
const BYTE* GetBuffer(int& aReturnedBufSize) const;
bool operator==(const ProxyStream& aOther) const
{
return this == &aOther;
}
private:
already_AddRefed<IStream> InitStream(const BYTE* aInitBuf,
const UINT aInitBufSize);
private:
RefPtr<IStream> mStream;
BYTE* mGlobalLockedBuf;
HGLOBAL mHGlobal;
int mBufSize;
ProxyUniquePtr<IUnknown> mUnmarshaledProxy;
};
} // namespace mscom
} // namespace mozilla
#endif // mozilla_mscom_ProxyStream_h
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