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comparison: gfx/skia/trunk/include/utils/win/SkIStream.h
gfx/skia/trunk/include/utils/win/SkIStream.h
- branch
- TOR_BUG_9701
- changeset 9
- a63d609f5ebe
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| -1:000000000000 | 0:f66a183b2afa |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2011 Google Inc. | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 | |
| 10 #ifndef SkIStream_DEFINED | |
| 11 #define SkIStream_DEFINED | |
| 12 | |
| 13 #define WIN32_LEAN_AND_MEAN | |
| 14 #include <windows.h> | |
| 15 #include <ole2.h> | |
| 16 | |
| 17 class SkStream; | |
| 18 class SkWStream; | |
| 19 | |
| 20 /** | |
| 21 * A bare IStream implementation which properly reference counts | |
| 22 * but returns E_NOTIMPL for all ISequentialStream and IStream methods. | |
| 23 */ | |
| 24 class SkBaseIStream : public IStream { | |
| 25 private: | |
| 26 LONG _refcount; | |
| 27 | |
| 28 protected: | |
| 29 explicit SkBaseIStream(); | |
| 30 virtual ~SkBaseIStream(); | |
| 31 | |
| 32 public: | |
| 33 virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid | |
| 34 , void ** ppvObject); | |
| 35 virtual ULONG STDMETHODCALLTYPE AddRef(void); | |
| 36 virtual ULONG STDMETHODCALLTYPE Release(void); | |
| 37 | |
| 38 // ISequentialStream Interface | |
| 39 public: | |
| 40 virtual HRESULT STDMETHODCALLTYPE Read(void* pv, ULONG cb, ULONG* pcbRead); | |
| 41 | |
| 42 virtual HRESULT STDMETHODCALLTYPE Write(void const* pv | |
| 43 , ULONG cb | |
| 44 , ULONG* pcbWritten); | |
| 45 | |
| 46 // IStream Interface | |
| 47 public: | |
| 48 virtual HRESULT STDMETHODCALLTYPE SetSize(ULARGE_INTEGER); | |
| 49 | |
| 50 virtual HRESULT STDMETHODCALLTYPE CopyTo(IStream* | |
| 51 , ULARGE_INTEGER | |
| 52 , ULARGE_INTEGER* | |
| 53 , ULARGE_INTEGER*); | |
| 54 | |
| 55 virtual HRESULT STDMETHODCALLTYPE Commit(DWORD); | |
| 56 | |
| 57 virtual HRESULT STDMETHODCALLTYPE Revert(void); | |
| 58 | |
| 59 virtual HRESULT STDMETHODCALLTYPE LockRegion(ULARGE_INTEGER | |
| 60 , ULARGE_INTEGER | |
| 61 , DWORD); | |
| 62 | |
| 63 virtual HRESULT STDMETHODCALLTYPE UnlockRegion(ULARGE_INTEGER | |
| 64 , ULARGE_INTEGER | |
| 65 , DWORD); | |
| 66 | |
| 67 virtual HRESULT STDMETHODCALLTYPE Clone(IStream **); | |
| 68 | |
| 69 virtual HRESULT STDMETHODCALLTYPE Seek(LARGE_INTEGER liDistanceToMove | |
| 70 , DWORD dwOrigin | |
| 71 , ULARGE_INTEGER* lpNewFilePointer); | |
| 72 | |
| 73 virtual HRESULT STDMETHODCALLTYPE Stat(STATSTG* pStatstg | |
| 74 , DWORD grfStatFlag); | |
| 75 }; | |
| 76 | |
| 77 /** | |
| 78 * A minimal read-only IStream implementation which wraps an SkIStream. | |
| 79 */ | |
| 80 class SkIStream : public SkBaseIStream { | |
| 81 private: | |
| 82 SkStream *fSkStream; | |
| 83 bool fUnrefOnRelease; | |
| 84 ULARGE_INTEGER fLocation; | |
| 85 | |
| 86 SkIStream(SkStream* stream, bool unrefOnRelease); | |
| 87 virtual ~SkIStream(); | |
| 88 | |
| 89 public: | |
| 90 HRESULT static CreateFromSkStream(SkStream* stream | |
| 91 , bool unrefOnRelease | |
| 92 , IStream ** ppStream); | |
| 93 | |
| 94 virtual HRESULT STDMETHODCALLTYPE Read(void* pv, ULONG cb, ULONG* pcbRead); | |
| 95 | |
| 96 virtual HRESULT STDMETHODCALLTYPE Write(void const* pv | |
| 97 , ULONG cb | |
| 98 , ULONG* pcbWritten); | |
| 99 | |
| 100 virtual HRESULT STDMETHODCALLTYPE Seek(LARGE_INTEGER liDistanceToMove | |
| 101 , DWORD dwOrigin | |
| 102 , ULARGE_INTEGER* lpNewFilePointer); | |
| 103 | |
| 104 virtual HRESULT STDMETHODCALLTYPE Stat(STATSTG* pStatstg | |
| 105 , DWORD grfStatFlag); | |
| 106 }; | |
| 107 | |
| 108 /** | |
| 109 * A minimal write-only IStream implementation which wraps an SkWIStream. | |
| 110 */ | |
| 111 class SkWIStream : public SkBaseIStream { | |
| 112 private: | |
| 113 SkWStream *fSkWStream; | |
| 114 | |
| 115 SkWIStream(SkWStream* stream); | |
| 116 virtual ~SkWIStream(); | |
| 117 | |
| 118 public: | |
| 119 HRESULT static CreateFromSkWStream(SkWStream* stream, IStream ** ppStream); | |
| 120 | |
| 121 virtual HRESULT STDMETHODCALLTYPE Write(void const* pv | |
| 122 , ULONG cb | |
| 123 , ULONG* pcbWritten); | |
| 124 | |
| 125 virtual HRESULT STDMETHODCALLTYPE Commit(DWORD); | |
| 126 | |
| 127 virtual HRESULT STDMETHODCALLTYPE Stat(STATSTG* pStatstg | |
| 128 , DWORD grfStatFlag); | |
| 129 }; | |
| 130 | |
| 131 #endif |
