2 * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 #ifndef MemoryStream_H
27 #define MemoryStream_H
31 #include <WebCore/COMPtr.h>
32 #include <WebCore/SharedBuffer.h>
33 #include <WTF/PassRefPtr.h>
34 #include <WTF/RefPtr.h>
36 class MemoryStream : public IStream
39 static COMPtr<MemoryStream> createInstance(PassRefPtr<WebCore::SharedBuffer> buffer);
42 MemoryStream(PassRefPtr<WebCore::SharedBuffer> buffer);
47 virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void** ppvObject);
48 virtual ULONG STDMETHODCALLTYPE AddRef(void);
49 virtual ULONG STDMETHODCALLTYPE Release(void);
52 virtual /* [local] */ HRESULT STDMETHODCALLTYPE Read(
53 /* [length_is][size_is][out] */ void* pv,
55 /* [out] */ ULONG* pcbRead);
57 virtual /* [local] */ HRESULT STDMETHODCALLTYPE Write(
58 /* [size_is][in] */ const void* pv,
60 /* [out] */ ULONG* pcbWritten);
63 virtual /* [local] */ HRESULT STDMETHODCALLTYPE Seek(
64 /* [in] */ LARGE_INTEGER dlibMove,
65 /* [in] */ DWORD dwOrigin,
66 /* [out] */ ULARGE_INTEGER* plibNewPosition);
68 virtual HRESULT STDMETHODCALLTYPE SetSize(
69 /* [in] */ ULARGE_INTEGER libNewSize);
71 virtual /* [local] */ HRESULT STDMETHODCALLTYPE CopyTo(
72 /* [unique][in] */ IStream* pstm,
73 /* [in] */ ULARGE_INTEGER cb,
74 /* [out] */ ULARGE_INTEGER* pcbRead,
75 /* [out] */ ULARGE_INTEGER* pcbWritten);
77 virtual HRESULT STDMETHODCALLTYPE Commit(
78 /* [in] */ DWORD grfCommitFlags);
80 virtual HRESULT STDMETHODCALLTYPE Revert( void);
82 virtual HRESULT STDMETHODCALLTYPE LockRegion(
83 /* [in] */ ULARGE_INTEGER libOffset,
84 /* [in] */ ULARGE_INTEGER cb,
85 /* [in] */ DWORD dwLockType);
87 virtual HRESULT STDMETHODCALLTYPE UnlockRegion(
88 /* [in] */ ULARGE_INTEGER libOffset,
89 /* [in] */ ULARGE_INTEGER cb,
90 /* [in] */ DWORD dwLockType);
92 virtual HRESULT STDMETHODCALLTYPE Stat(
93 /* [out] */ STATSTG* pstatstg,
94 /* [in] */ DWORD grfStatFlag);
96 virtual HRESULT STDMETHODCALLTYPE Clone(
97 /* [out] */ IStream** ppstm);
101 RefPtr<WebCore::SharedBuffer> m_buffer;