64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_mscom_ProxyStream_h
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#define mozilla_mscom_ProxyStream_h
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#include "ipc/IPCMessageUtils.h"
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#include "mozilla/mscom/Ptr.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/UniquePtr.h"
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namespace mozilla {
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namespace mscom {
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class ProxyStream
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{
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public:
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ProxyStream();
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ProxyStream(REFIID aIID, IUnknown* aObject);
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ProxyStream(const BYTE* aInitBuf, const int aInitBufSize);
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~ProxyStream();
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// Not copyable because this would mess up the COM marshaling.
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ProxyStream(const ProxyStream& aOther) = delete;
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ProxyStream& operator=(const ProxyStream& aOther) = delete;
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ProxyStream(ProxyStream&& aOther);
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ProxyStream& operator=(ProxyStream&& aOther);
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inline bool IsValid() const
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{
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// This check must be exclusive OR
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return (mStream && !mUnmarshaledProxy) || (mUnmarshaledProxy && !mStream);
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}
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bool GetInterface(REFIID aIID, void** aOutInterface) const;
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const BYTE* GetBuffer(int& aReturnedBufSize) const;
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bool operator==(const ProxyStream& aOther) const
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{
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return this == &aOther;
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}
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private:
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already_AddRefed<IStream> InitStream(const BYTE* aInitBuf,
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const UINT aInitBufSize);
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private:
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RefPtr<IStream> mStream;
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BYTE* mGlobalLockedBuf;
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HGLOBAL mHGlobal;
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int mBufSize;
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ProxyUniquePtr<IUnknown> mUnmarshaledProxy;
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};
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} // namespace mscom
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} // namespace mozilla
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#endif // mozilla_mscom_ProxyStream_h
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