| // Copyright (c) 2011 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 CHROME_FRAME_STREAM_IMPL_H_ |
| #define CHROME_FRAME_STREAM_IMPL_H_ |
| |
| #include <atlbase.h> |
| #include <atlcom.h> |
| |
| #include "base/win/scoped_comptr.h" |
| |
| // A generic base class for IStream implementation. If provided |
| // with a delegate, it delegated calls to it otherwise can be |
| // used a as a base class for an IStream implementation. |
| class StreamImpl : public IStream { |
| public: |
| StreamImpl() {} |
| |
| void Initialize(IStream* delegate); |
| |
| STDMETHOD(Write)(const void * buffer, ULONG size, ULONG* size_written); |
| STDMETHOD(Read)(void* pv, ULONG cb, ULONG* read); |
| STDMETHOD(Seek)(LARGE_INTEGER move, DWORD origin, ULARGE_INTEGER* new_pos); |
| STDMETHOD(SetSize)(ULARGE_INTEGER new_size); |
| STDMETHOD(CopyTo)(IStream* stream, ULARGE_INTEGER cb, ULARGE_INTEGER* read, |
| ULARGE_INTEGER* written); |
| STDMETHOD(Commit)(DWORD flags); |
| STDMETHOD(Revert)(); |
| STDMETHOD(LockRegion)(ULARGE_INTEGER offset, ULARGE_INTEGER cb, |
| DWORD type); |
| STDMETHOD(UnlockRegion)(ULARGE_INTEGER offset, ULARGE_INTEGER cb, |
| DWORD type); |
| STDMETHOD(Stat)(STATSTG* statstg, DWORD flag); |
| STDMETHOD(Clone)(IStream** stream); |
| |
| protected: |
| base::win::ScopedComPtr<IStream> delegate_; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(StreamImpl); |
| }; |
| |
| #endif // CHROME_FRAME_STREAM_IMPL_H_ |