SkIStream.cpp revision 80bacfeb4bda06541e8695bd502229727bccfeab
1fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek 2b0982880c09a07147b5a9ad275393fedff13aad0Ted Kremenek/* 3b0982880c09a07147b5a9ad275393fedff13aad0Ted Kremenek * Copyright 2011 Google Inc. 4b0982880c09a07147b5a9ad275393fedff13aad0Ted Kremenek * 5b0982880c09a07147b5a9ad275393fedff13aad0Ted Kremenek * Use of this source code is governed by a BSD-style license that can be 6b0982880c09a07147b5a9ad275393fedff13aad0Ted Kremenek * found in the LICENSE file. 7b0982880c09a07147b5a9ad275393fedff13aad0Ted Kremenek */ 8b0982880c09a07147b5a9ad275393fedff13aad0Ted Kremenek 9b0982880c09a07147b5a9ad275393fedff13aad0Ted Kremenek 10fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek#define WIN32_LEAN_AND_MEAN 11fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek#include <Windows.h> 12b0982880c09a07147b5a9ad275393fedff13aad0Ted Kremenek#include <ole2.h> 13b0982880c09a07147b5a9ad275393fedff13aad0Ted Kremenek#include "SkIStream.h" 14b0982880c09a07147b5a9ad275393fedff13aad0Ted Kremenek#include "SkStream.h" 15fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek 16fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek/** 17b315a3940f804cf9fc67f4e3314aac6a44d623eeTed Kremenek * SkBaseIStream 18991c54b9b7409656e5593364e065878b5210d556Ted Kremenek */ 19991c54b9b7409656e5593364e065878b5210d556Ted KremenekSkBaseIStream::SkBaseIStream() : _refcount(1) { } 20ddf32dabe71f00aa0943449f67201f587f0a04d6Ted KremenekSkBaseIStream::~SkBaseIStream() { } 212ec5cd553542ec54652fb2ae2395e46795b1af84Ted Kremenek 222ec5cd553542ec54652fb2ae2395e46795b1af84Ted KremenekHRESULT STDMETHODCALLTYPE SkBaseIStream::QueryInterface(REFIID iid 232ec5cd553542ec54652fb2ae2395e46795b1af84Ted Kremenek , void ** ppvObject) 24ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek{ 25ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek if (NULL == ppvObject) { 26ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek return E_INVALIDARG; 27ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek } 28ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek if (iid == __uuidof(IUnknown) 29ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek || iid == __uuidof(IStream) 30ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek || iid == __uuidof(ISequentialStream)) 31ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek { 32ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek *ppvObject = static_cast<IStream*>(this); 33ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek AddRef(); 34991c54b9b7409656e5593364e065878b5210d556Ted Kremenek return S_OK; 35991c54b9b7409656e5593364e065878b5210d556Ted Kremenek } else { 36991c54b9b7409656e5593364e065878b5210d556Ted Kremenek *ppvObject = NULL; 37991c54b9b7409656e5593364e065878b5210d556Ted Kremenek return E_NOINTERFACE; 38991c54b9b7409656e5593364e065878b5210d556Ted Kremenek } 39991c54b9b7409656e5593364e065878b5210d556Ted Kremenek} 40991c54b9b7409656e5593364e065878b5210d556Ted Kremenek 41991c54b9b7409656e5593364e065878b5210d556Ted KremenekULONG STDMETHODCALLTYPE SkBaseIStream::AddRef(void) { 42991c54b9b7409656e5593364e065878b5210d556Ted Kremenek return (ULONG)InterlockedIncrement(&_refcount); 43991c54b9b7409656e5593364e065878b5210d556Ted Kremenek} 445daa3be1bf9db399aa7510bbcf2bfc8c7701b6daTed Kremenek 45938eef139ad43345248235da31f78a759dd18f13Ted KremenekULONG STDMETHODCALLTYPE SkBaseIStream::Release(void) { 465daa3be1bf9db399aa7510bbcf2bfc8c7701b6daTed Kremenek ULONG res = (ULONG) InterlockedDecrement(&_refcount); 475d31f83bbe990aeb070ce6c8d919d229d4eb5052Ted Kremenek if (0 == res) { 48c3998fa64e254b13669e8cf3a0cf23eb4f73b88bTed Kremenek delete this; 49938eef139ad43345248235da31f78a759dd18f13Ted Kremenek } 50991c54b9b7409656e5593364e065878b5210d556Ted Kremenek return res; 515daa3be1bf9db399aa7510bbcf2bfc8c7701b6daTed Kremenek} 525daa3be1bf9db399aa7510bbcf2bfc8c7701b6daTed Kremenek 53938eef139ad43345248235da31f78a759dd18f13Ted Kremenek// ISequentialStream Interface 54938eef139ad43345248235da31f78a759dd18f13Ted KremenekHRESULT STDMETHODCALLTYPE SkBaseIStream::Read(void* pv 55938eef139ad43345248235da31f78a759dd18f13Ted Kremenek , ULONG cb 56938eef139ad43345248235da31f78a759dd18f13Ted Kremenek , ULONG* pcbRead) 57938eef139ad43345248235da31f78a759dd18f13Ted Kremenek{ return E_NOTIMPL; } 58938eef139ad43345248235da31f78a759dd18f13Ted Kremenek 59c3998fa64e254b13669e8cf3a0cf23eb4f73b88bTed KremenekHRESULT STDMETHODCALLTYPE SkBaseIStream::Write(void const* pv 60c3998fa64e254b13669e8cf3a0cf23eb4f73b88bTed Kremenek , ULONG cb 615daa3be1bf9db399aa7510bbcf2bfc8c7701b6daTed Kremenek , ULONG* pcbWritten) 625daa3be1bf9db399aa7510bbcf2bfc8c7701b6daTed Kremenek{ return E_NOTIMPL; } 635daa3be1bf9db399aa7510bbcf2bfc8c7701b6daTed Kremenek 64991c54b9b7409656e5593364e065878b5210d556Ted Kremenek// IStream Interface 652ec5cd553542ec54652fb2ae2395e46795b1af84Ted KremenekHRESULT STDMETHODCALLTYPE SkBaseIStream::SetSize(ULARGE_INTEGER) 66991c54b9b7409656e5593364e065878b5210d556Ted Kremenek{ return E_NOTIMPL; } 67c3998fa64e254b13669e8cf3a0cf23eb4f73b88bTed Kremenek 68c3998fa64e254b13669e8cf3a0cf23eb4f73b88bTed KremenekHRESULT STDMETHODCALLTYPE SkBaseIStream::CopyTo(IStream* 69c3998fa64e254b13669e8cf3a0cf23eb4f73b88bTed Kremenek , ULARGE_INTEGER 70c3998fa64e254b13669e8cf3a0cf23eb4f73b88bTed Kremenek , ULARGE_INTEGER* 71c3998fa64e254b13669e8cf3a0cf23eb4f73b88bTed Kremenek , ULARGE_INTEGER*) 72c3998fa64e254b13669e8cf3a0cf23eb4f73b88bTed Kremenek{ return E_NOTIMPL; } 73c3998fa64e254b13669e8cf3a0cf23eb4f73b88bTed Kremenek 7482a1253077cd0832e4d347062b911cd305ab62d1Ted KremenekHRESULT STDMETHODCALLTYPE SkBaseIStream::Commit(DWORD) 755f2825f6fa24a792c11cf96accd76538a2fd951eTed Kremenek{ return E_NOTIMPL; } 765d31f83bbe990aeb070ce6c8d919d229d4eb5052Ted Kremenek 772dd7ad13bbbd43cb940040725a30cb7789bd2774Ted KremenekHRESULT STDMETHODCALLTYPE SkBaseIStream::Revert(void) 78991c54b9b7409656e5593364e065878b5210d556Ted Kremenek{ return E_NOTIMPL; } 7982a1253077cd0832e4d347062b911cd305ab62d1Ted Kremenek 8082a1253077cd0832e4d347062b911cd305ab62d1Ted KremenekHRESULT STDMETHODCALLTYPE SkBaseIStream::LockRegion(ULARGE_INTEGER 819f9b1fded49acff77e61b3ed1afc8bbaaefe6f34Ted Kremenek , ULARGE_INTEGER 82938eef139ad43345248235da31f78a759dd18f13Ted Kremenek , DWORD) 83991c54b9b7409656e5593364e065878b5210d556Ted Kremenek{ return E_NOTIMPL; } 84b0982880c09a07147b5a9ad275393fedff13aad0Ted Kremenek 85fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted KremenekHRESULT STDMETHODCALLTYPE SkBaseIStream::UnlockRegion(ULARGE_INTEGER 86fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek , ULARGE_INTEGER 87fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek , DWORD) 88b0982880c09a07147b5a9ad275393fedff13aad0Ted Kremenek{ return E_NOTIMPL; } 89fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek 90fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted KremenekHRESULT STDMETHODCALLTYPE SkBaseIStream::Clone(IStream **) 91d389465f426069115a35e857ef11f1fcc5a2f69cSeo Sanghyeon{ return E_NOTIMPL; } 92fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek 93fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted KremenekHRESULT STDMETHODCALLTYPE SkBaseIStream::Seek(LARGE_INTEGER liDistanceToMove 945d31f83bbe990aeb070ce6c8d919d229d4eb5052Ted Kremenek , DWORD dwOrigin 95fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek , ULARGE_INTEGER* lpNewFilePointer) 96fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek{ return E_NOTIMPL; } 97fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek 98991c54b9b7409656e5593364e065878b5210d556Ted KremenekHRESULT STDMETHODCALLTYPE SkBaseIStream::Stat(STATSTG* pStatstg 99fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek , DWORD grfStatFlag) 100fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek{ return E_NOTIMPL; } 101fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek 102fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek 103fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek/** 104fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek * SkIStream 105fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek */ 106fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted KremenekSkIStream::SkIStream(SkStream* stream, bool unrefOnRelease) 107991c54b9b7409656e5593364e065878b5210d556Ted Kremenek : SkBaseIStream() 108fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek , fSkStream(stream) 109fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek , fUnrefOnRelease(unrefOnRelease) 110fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek , fLocation() 111fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek{ 112fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek this->fSkStream->rewind(); 113991c54b9b7409656e5593364e065878b5210d556Ted Kremenek} 114938eef139ad43345248235da31f78a759dd18f13Ted Kremenek 115938eef139ad43345248235da31f78a759dd18f13Ted KremenekSkIStream::~SkIStream() { 116938eef139ad43345248235da31f78a759dd18f13Ted Kremenek if (NULL != this->fSkStream && fUnrefOnRelease) { 117a2bdaf53223eed00c4b33e2a8ef42ef64c4479aaTed Kremenek this->fSkStream->unref(); 118991c54b9b7409656e5593364e065878b5210d556Ted Kremenek } 119fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek} 120fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek 121fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted KremenekHRESULT SkIStream::CreateFromSkStream(SkStream* stream 122fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek , bool unrefOnRelease 123fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek , IStream ** ppStream) 12461cd988a7eaadd4b81c63a18a4733bf31399b66cTed Kremenek{ 125fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek *ppStream = new SkIStream(stream, unrefOnRelease); 126fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek return S_OK; 127fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek} 128fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek 129fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek// ISequentialStream Interface 130fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted KremenekHRESULT STDMETHODCALLTYPE SkIStream::Read(void* pv, ULONG cb, ULONG* pcbRead) { 131fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek *pcbRead = this->fSkStream->read(pv, cb); 132fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek this->fLocation.QuadPart += *pcbRead; 13361cd988a7eaadd4b81c63a18a4733bf31399b66cTed Kremenek return (*pcbRead == cb) ? S_OK : S_FALSE; 13461cd988a7eaadd4b81c63a18a4733bf31399b66cTed Kremenek} 135fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek 136fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted KremenekHRESULT STDMETHODCALLTYPE SkIStream::Write(void const* pv 137fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek , ULONG cb 138fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek , ULONG* pcbWritten) 139fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek{ 140fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek return STG_E_CANTSAVE; 14161cd988a7eaadd4b81c63a18a4733bf31399b66cTed Kremenek} 142ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek 143ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek// IStream Interface 144ddf32dabe71f00aa0943449f67201f587f0a04d6Ted KremenekHRESULT STDMETHODCALLTYPE SkIStream::Seek(LARGE_INTEGER liDistanceToMove 145ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek , DWORD dwOrigin 146ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek , ULARGE_INTEGER* lpNewFilePointer) 147ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek{ 148ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek HRESULT hr = S_OK; 149ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek 150ddf32dabe71f00aa0943449f67201f587f0a04d6Ted Kremenek switch(dwOrigin) { 151fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek case STREAM_SEEK_SET: { 152948e06babdf81033517b54910fedda8079f29ff9Ted Kremenek if (!this->fSkStream->rewind()) { 153948e06babdf81033517b54910fedda8079f29ff9Ted Kremenek hr = E_FAIL; 154948e06babdf81033517b54910fedda8079f29ff9Ted Kremenek } else { 155948e06babdf81033517b54910fedda8079f29ff9Ted Kremenek size_t skipped = this->fSkStream->skip( 156991c54b9b7409656e5593364e065878b5210d556Ted Kremenek static_cast<size_t>(liDistanceToMove.QuadPart) 1579a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek ); 1589a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek this->fLocation.QuadPart = skipped; 1599a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek if (skipped != liDistanceToMove.QuadPart) { 1609a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek hr = E_FAIL; 1611346268d7f44551ab63e25dbbf5e3ae9402708c5Ted Kremenek } 1629a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek } 1639a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek break; 1641346268d7f44551ab63e25dbbf5e3ae9402708c5Ted Kremenek } 1651346268d7f44551ab63e25dbbf5e3ae9402708c5Ted Kremenek case STREAM_SEEK_CUR: { 1661346268d7f44551ab63e25dbbf5e3ae9402708c5Ted Kremenek size_t skipped = this->fSkStream->skip( 1679a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek static_cast<size_t>(liDistanceToMove.QuadPart) 1689a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek ); 1691346268d7f44551ab63e25dbbf5e3ae9402708c5Ted Kremenek this->fLocation.QuadPart += skipped; 1701346268d7f44551ab63e25dbbf5e3ae9402708c5Ted Kremenek if (skipped != liDistanceToMove.QuadPart) { 1711346268d7f44551ab63e25dbbf5e3ae9402708c5Ted Kremenek hr = E_FAIL; 1721346268d7f44551ab63e25dbbf5e3ae9402708c5Ted Kremenek } 1731346268d7f44551ab63e25dbbf5e3ae9402708c5Ted Kremenek break; 1741346268d7f44551ab63e25dbbf5e3ae9402708c5Ted Kremenek } 1751346268d7f44551ab63e25dbbf5e3ae9402708c5Ted Kremenek case STREAM_SEEK_END: { 1761346268d7f44551ab63e25dbbf5e3ae9402708c5Ted Kremenek if (!this->fSkStream->rewind()) { 1771346268d7f44551ab63e25dbbf5e3ae9402708c5Ted Kremenek hr = E_FAIL; 1781346268d7f44551ab63e25dbbf5e3ae9402708c5Ted Kremenek } else { 1799a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek LONGLONG skip = this->fSkStream->getLength() 1809a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek + liDistanceToMove.QuadPart; 1819a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek size_t skipped = this->fSkStream->skip(static_cast<size_t>(skip)); 1829a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek this->fLocation.QuadPart = skipped; 183c3998fa64e254b13669e8cf3a0cf23eb4f73b88bTed Kremenek if (skipped != skip) { 1849a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek hr = E_FAIL; 1859a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek } 1869a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek } 1875de4092946373af0c8caca64a281e8080c9d8a34Ted Kremenek break; 1885de4092946373af0c8caca64a281e8080c9d8a34Ted Kremenek } 1895de4092946373af0c8caca64a281e8080c9d8a34Ted Kremenek default: 1905de4092946373af0c8caca64a281e8080c9d8a34Ted Kremenek hr = STG_E_INVALIDFUNCTION; 1919a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek break; 192938eef139ad43345248235da31f78a759dd18f13Ted Kremenek } 193938eef139ad43345248235da31f78a759dd18f13Ted Kremenek 194938eef139ad43345248235da31f78a759dd18f13Ted Kremenek if (NULL != lpNewFilePointer) { 195938eef139ad43345248235da31f78a759dd18f13Ted Kremenek lpNewFilePointer->QuadPart = this->fLocation.QuadPart; 196938eef139ad43345248235da31f78a759dd18f13Ted Kremenek } 197938eef139ad43345248235da31f78a759dd18f13Ted Kremenek return hr; 198938eef139ad43345248235da31f78a759dd18f13Ted Kremenek} 199938eef139ad43345248235da31f78a759dd18f13Ted Kremenek 200938eef139ad43345248235da31f78a759dd18f13Ted KremenekHRESULT STDMETHODCALLTYPE SkIStream::Stat(STATSTG* pStatstg 201938eef139ad43345248235da31f78a759dd18f13Ted Kremenek , DWORD grfStatFlag) 202938eef139ad43345248235da31f78a759dd18f13Ted Kremenek{ 203938eef139ad43345248235da31f78a759dd18f13Ted Kremenek if (0 == (grfStatFlag & STATFLAG_NONAME)) { 2047e5bd6f061c549dca0c1aeedfdd4009b853264eaTed Kremenek return STG_E_INVALIDFLAG; 2057e5bd6f061c549dca0c1aeedfdd4009b853264eaTed Kremenek } 2067e5bd6f061c549dca0c1aeedfdd4009b853264eaTed Kremenek pStatstg->pwcsName = NULL; 2077e5bd6f061c549dca0c1aeedfdd4009b853264eaTed Kremenek pStatstg->cbSize.QuadPart = this->fSkStream->getLength(); 2087e5bd6f061c549dca0c1aeedfdd4009b853264eaTed Kremenek pStatstg->clsid = CLSID_NULL; 2097e5bd6f061c549dca0c1aeedfdd4009b853264eaTed Kremenek pStatstg->type = STGTY_STREAM; 2107e5bd6f061c549dca0c1aeedfdd4009b853264eaTed Kremenek pStatstg->grfMode = STGM_READ; 2117e5bd6f061c549dca0c1aeedfdd4009b853264eaTed Kremenek return S_OK; 212938eef139ad43345248235da31f78a759dd18f13Ted Kremenek} 213938eef139ad43345248235da31f78a759dd18f13Ted Kremenek 214938eef139ad43345248235da31f78a759dd18f13Ted Kremenek 215938eef139ad43345248235da31f78a759dd18f13Ted Kremenek/** 216938eef139ad43345248235da31f78a759dd18f13Ted Kremenek * SkIWStream 217938eef139ad43345248235da31f78a759dd18f13Ted Kremenek */ 218938eef139ad43345248235da31f78a759dd18f13Ted KremenekSkWIStream::SkWIStream(SkWStream* stream) 219938eef139ad43345248235da31f78a759dd18f13Ted Kremenek : SkBaseIStream() 220938eef139ad43345248235da31f78a759dd18f13Ted Kremenek , fSkWStream(stream) 2217e5bd6f061c549dca0c1aeedfdd4009b853264eaTed Kremenek{ } 222938eef139ad43345248235da31f78a759dd18f13Ted Kremenek 223938eef139ad43345248235da31f78a759dd18f13Ted KremenekSkWIStream::~SkWIStream() { 224938eef139ad43345248235da31f78a759dd18f13Ted Kremenek if (NULL != this->fSkWStream) { 225938eef139ad43345248235da31f78a759dd18f13Ted Kremenek this->fSkWStream->flush(); 226938eef139ad43345248235da31f78a759dd18f13Ted Kremenek } 227938eef139ad43345248235da31f78a759dd18f13Ted Kremenek} 2289a3c7dae00402a60a9dbe918e310214c92c5baebTed Kremenek 2299a3c7dae00402a60a9dbe918e310214c92c5baebTed KremenekHRESULT SkWIStream::CreateFromSkWStream(SkWStream* stream 230fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek , IStream ** ppStream) 231fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek{ 232fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek *ppStream = new SkWIStream(stream); 233fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek return S_OK; 234fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek} 235fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek 236fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek// ISequentialStream Interface 237fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted KremenekHRESULT STDMETHODCALLTYPE SkWIStream::Write(void const* pv 23806c58b191f969e2ae5308cc9b6540bad9511f4efAnders Carlsson , ULONG cb 239fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek , ULONG* pcbWritten) 2406c4312d17015755213a8e1c1003517f94786dfa4Ted Kremenek{ 2416c4312d17015755213a8e1c1003517f94786dfa4Ted Kremenek HRESULT hr = S_OK; 242fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek bool wrote = this->fSkWStream->write(pv, cb); 243fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek if (wrote) { 244fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek *pcbWritten = cb; 245fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek } else { 246fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek *pcbWritten = 0; 247fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek hr = S_FALSE; 248fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek } 249fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek return hr; 250fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek} 251fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek 252fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek// IStream Interface 253fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted KremenekHRESULT STDMETHODCALLTYPE SkWIStream::Commit(DWORD) { 254fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek this->fSkWStream->flush(); 255fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek return S_OK; 256fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek} 257fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek 258e4f6952831d2b42b99f4a28825e87012d93eb8c0Ted KremenekHRESULT STDMETHODCALLTYPE SkWIStream::Stat(STATSTG* pStatstg 259b10362acd971b84d4525334b275fcbfb4e42cb85Ted Kremenek , DWORD grfStatFlag) 2608d33cd77dc1086f70f1699ea012702d0df7eba1aDaniel Dunbar{ 2618d33cd77dc1086f70f1699ea012702d0df7eba1aDaniel Dunbar if (0 == (grfStatFlag & STATFLAG_NONAME)) { 262fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek return STG_E_INVALIDFLAG; 263fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek } 264fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek pStatstg->pwcsName = NULL; 265940260996dfae2b6acd0466c1519b8e5083bed83Ted Kremenek pStatstg->cbSize.QuadPart = 0; 266940260996dfae2b6acd0466c1519b8e5083bed83Ted Kremenek pStatstg->clsid = CLSID_NULL; 267940260996dfae2b6acd0466c1519b8e5083bed83Ted Kremenek pStatstg->type = STGTY_STREAM; 268fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek pStatstg->grfMode = STGM_WRITE; 269fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek return S_OK; 270fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek} 271fbeeca84dd1993d2656e9a259f5d7ee54fe3b162Ted Kremenek