blob: 2ba7da90a5c62129008df6129730acdb9bd453ba [file] [log] [blame]
/*
* Copyright (C) 2006-2007, 2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef MemoryStream_H
#define MemoryStream_H
#include <objidl.h>
#include <WebCore/COMPtr.h>
#include <WebCore/SharedBuffer.h>
#include <WTF/RefPtr.h>
class MemoryStream final : public IStream
{
public:
static COMPtr<MemoryStream> createInstance(RefPtr<WebCore::SharedBuffer>&&);
// IUnknown
virtual HRESULT STDMETHODCALLTYPE QueryInterface(_In_ REFIID riid, _COM_Outptr_ void** ppvObject);
virtual ULONG STDMETHODCALLTYPE AddRef();
virtual ULONG STDMETHODCALLTYPE Release();
// ISequentialStream
virtual /* [local] */ HRESULT STDMETHODCALLTYPE Read(
/* [length_is][size_is][out] */ void* pv,
/* [in] */ ULONG cb,
/* [out] */ ULONG* pcbRead);
virtual /* [local] */ HRESULT STDMETHODCALLTYPE Write(
/* [size_is][in] */ const void* pv,
/* [in] */ ULONG cb,
/* [out] */ ULONG* pcbWritten);
// IStream
virtual /* [local] */ HRESULT STDMETHODCALLTYPE Seek(
/* [in] */ LARGE_INTEGER dlibMove,
/* [in] */ DWORD dwOrigin,
/* [out] */ ULARGE_INTEGER* plibNewPosition);
virtual HRESULT STDMETHODCALLTYPE SetSize(ULARGE_INTEGER libNewSize);
virtual /* [local] */ HRESULT STDMETHODCALLTYPE CopyTo(
/* [unique][in] */ IStream* pstm,
/* [in] */ ULARGE_INTEGER cb,
/* [out] */ ULARGE_INTEGER* pcbRead,
/* [out] */ ULARGE_INTEGER* pcbWritten);
virtual HRESULT STDMETHODCALLTYPE Commit(DWORD grfCommitFlags);
virtual HRESULT STDMETHODCALLTYPE Revert();
virtual HRESULT STDMETHODCALLTYPE LockRegion(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType);
virtual HRESULT STDMETHODCALLTYPE UnlockRegion(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType);
virtual HRESULT STDMETHODCALLTYPE Stat(_Out_ STATSTG*, DWORD grfStatFlag);
virtual HRESULT STDMETHODCALLTYPE Clone(_COM_Outptr_ IStream** ppstm);
private:
MemoryStream(RefPtr<WebCore::SharedBuffer>&&);
~MemoryStream();
RefPtr<WebCore::SharedBuffer> m_buffer;
size_t m_pos { 0 };
ULONG m_refCount { 0 };
};
#endif