Alessandro Pignotti : quartz: Check byte patterns in GetFileSourceFilter.
Module: wine Branch: master Commit: e583f8806eea8928d845dff1953f706d2c3ea207 URL: http://source.winehq.org/git/wine.git/?a=commit;h=e583f8806eea8928d845dff195... Author: Alessandro Pignotti <a.pignotti(a)sssup.it> Date: Thu Feb 21 16:57:50 2013 +0100 quartz: Check byte patterns in GetFileSourceFilter. The idea is to create a temporary AsyncReader and use it to match a better filter. If no match is found the temporary filter is returned. --- dlls/quartz/filesource.c | 15 ++++- dlls/quartz/filtergraph.c | 133 +++++++++++++++++++++++++++------------------ 2 files changed, 92 insertions(+), 56 deletions(-) diff --git a/dlls/quartz/filesource.c b/dlls/quartz/filesource.c index 5bde1e5..95e146d 100644 --- a/dlls/quartz/filesource.c +++ b/dlls/quartz/filesource.c @@ -295,7 +295,8 @@ HRESULT GetClassMediaFile(IAsyncReader * pReader, LPCOLESTR pszFileName, GUID * if (process_extensions(hkeyMajor, pszFileName, majorType, minorType, sourceFilter) == S_OK) bFound = TRUE; } - else + /* We need a reader interface to check bytes */ + else if (pReader) { DWORD indexMinor; @@ -305,7 +306,7 @@ HRESULT GetClassMediaFile(IAsyncReader * pReader, LPCOLESTR pszFileName, GUID * WCHAR wszMinorKeyName[CHARS_IN_GUID]; DWORD dwMinorKeyNameLen = sizeof(wszMinorKeyName) / sizeof(wszMinorKeyName[0]); WCHAR wszSourceFilterKeyName[CHARS_IN_GUID]; - DWORD dwSourceFilterKeyNameLen = sizeof(wszSourceFilterKeyName) / sizeof(wszSourceFilterKeyName[0]); + DWORD dwSourceFilterKeyNameLen = sizeof(wszSourceFilterKeyName); DWORD maxValueLen; DWORD indexValue; @@ -370,7 +371,15 @@ HRESULT GetClassMediaFile(IAsyncReader * pReader, LPCOLESTR pszFileName, GUID * hr = E_FAIL; } else if (bFound) - TRACE("Found file's class: major = %s, subtype = %s\n", qzdebugstr_guid(majorType), qzdebugstr_guid(minorType)); + { + TRACE("Found file's class:\n"); + if(majorType) + TRACE("\tmajor = %s\n", qzdebugstr_guid(majorType)); + if(minorType) + TRACE("\tsubtype = %s\n", qzdebugstr_guid(minorType)); + if(sourceFilter) + TRACE("\tsource filter = %s\n", qzdebugstr_guid(sourceFilter)); + } return hr; } diff --git a/dlls/quartz/filtergraph.c b/dlls/quartz/filtergraph.c index 4140d23..985e568 100644 --- a/dlls/quartz/filtergraph.c +++ b/dlls/quartz/filtergraph.c @@ -1556,61 +1556,97 @@ static HRESULT WINAPI FilterGraph2_RenderFile(IFilterGraph2 *iface, LPCWSTR lpcw return hr; } +static HRESULT CreateFilterInstanceAndLoadFile(GUID* clsid, LPCOLESTR pszFileName, IBaseFilter **filter) +{ + IFileSourceFilter *source = NULL; + HRESULT hr = CoCreateInstance(clsid, NULL, CLSCTX_INPROC_SERVER, &IID_IBaseFilter, (LPVOID*)filter); + TRACE("CLSID: %s\n", debugstr_guid(clsid)); + if (FAILED(hr)) + return hr; + + hr = IBaseFilter_QueryInterface(*filter, &IID_IFileSourceFilter, (LPVOID*)&source); + if (FAILED(hr)) + { + IBaseFilter_Release(*filter); + return hr; + } + + /* Load the file in the file source filter */ + hr = IFileSourceFilter_Load(source, pszFileName, NULL); + IFileSourceFilter_Release(source); + if (FAILED(hr)) { + WARN("Load (%x)\n", hr); + IBaseFilter_Release(*filter); + return hr; + } + + return hr; +} + /* Some filters implement their own asynchronous reader (Theoretically they all should, try to load it first */ static HRESULT GetFileSourceFilter(LPCOLESTR pszFileName, IBaseFilter **filter) { - static const WCHAR wszReg[] = {'M','e','d','i','a',' ','T','y','p','e','\\','E','x','t','e','n','s','i','o','n','s',0}; - HRESULT hr = S_OK; - HKEY extkey; - LONG lRet; + HRESULT hr; + GUID clsid; + IAsyncReader * pReader = NULL; + IFileSourceFilter* pSource = NULL; + IPin * pOutputPin = NULL; + static const WCHAR wszOutputPinName[] = { 'O','u','t','p','u','t',0 }; - lRet = RegOpenKeyExW(HKEY_CLASSES_ROOT, wszReg, 0, KEY_READ, &extkey); - hr = HRESULT_FROM_WIN32(lRet); + /* Try to find a match without reading the file first */ + hr = GetClassMediaFile(NULL, pszFileName, NULL, NULL, &clsid); - if (SUCCEEDED(hr)) + if (!hr) + return CreateFilterInstanceAndLoadFile(&clsid, pszFileName, filter); + + /* Now create a AyncReader instance, to check for signature bytes in the file */ + hr = CoCreateInstance(&CLSID_AsyncReader, NULL, CLSCTX_INPROC_SERVER, &IID_IBaseFilter, (LPVOID*)filter); + if (FAILED(hr)) + return hr; + + hr = IBaseFilter_QueryInterface(*filter, &IID_IFileSourceFilter, (LPVOID *)&pSource); + if (FAILED(hr)) { - static const WCHAR filtersource[] = {'S','o','u','r','c','e',' ','F','i','l','t','e','r',0}; - WCHAR *ext = PathFindExtensionW(pszFileName); - WCHAR clsid_key[39]; - GUID clsid; - DWORD size = sizeof(clsid_key); - HKEY pathkey; + IBaseFilter_Release(*filter); + return hr; + } - if (!ext) - { - CloseHandle(extkey); - return E_FAIL; - } + hr = IFileSourceFilter_Load(pSource, pszFileName, NULL); + IFileSourceFilter_Release(pSource); + if (FAILED(hr)) + { + IBaseFilter_Release(*filter); + return hr; + } - lRet = RegOpenKeyExW(extkey, ext, 0, KEY_READ, &pathkey); - hr = HRESULT_FROM_WIN32(lRet); - CloseHandle(extkey); - if (FAILED(hr)) - return hr; + hr = IBaseFilter_FindPin(*filter, wszOutputPinName, &pOutputPin); + if (FAILED(hr)) + { + IBaseFilter_Release(*filter); + return hr; + } - lRet = RegQueryValueExW(pathkey, filtersource, NULL, NULL, (LPBYTE)clsid_key, &size); - hr = HRESULT_FROM_WIN32(lRet); - CloseHandle(pathkey); - if (FAILED(hr)) - return hr; + hr = IPin_QueryInterface(pOutputPin, &IID_IAsyncReader, (LPVOID *)&pReader); + IPin_Release(pOutputPin); + if (FAILED(hr)) + { + IBaseFilter_Release(*filter); + return hr; + } - CLSIDFromString(clsid_key, &clsid); + /* Try again find a match */ + hr = GetClassMediaFile(pReader, pszFileName, NULL, NULL, &clsid); + IAsyncReader_Release(pReader); - TRACE("CLSID: %s\n", debugstr_guid(&clsid)); - hr = CoCreateInstance(&clsid, NULL, CLSCTX_INPROC_SERVER, &IID_IBaseFilter, (LPVOID*)filter); - if (SUCCEEDED(hr)) - { - IFileSourceFilter *source = NULL; - hr = IBaseFilter_QueryInterface(*filter, &IID_IFileSourceFilter, (LPVOID*)&source); - if (SUCCEEDED(hr)) - IFileSourceFilter_Release(source); - else - IBaseFilter_Release(*filter); - } + if (!hr) + { + /* Release the AsyncReader filter and create the matching one */ + IBaseFilter_Release(*filter); + return CreateFilterInstanceAndLoadFile(&clsid, pszFileName, filter); } - if (FAILED(hr)) - *filter = NULL; - return hr; + + /* Return the AsyncReader filter */ + return S_OK; } static HRESULT WINAPI FilterGraph2_AddSourceFilter(IFilterGraph2 *iface, LPCWSTR lpcwstrFileName, @@ -1627,9 +1663,6 @@ static HRESULT WINAPI FilterGraph2_AddSourceFilter(IFilterGraph2 *iface, LPCWSTR /* Try from file name first, then fall back to default asynchronous reader */ hr = GetFileSourceFilter(lpcwstrFileName, &preader); - - if (FAILED(hr)) - hr = CoCreateInstance(&CLSID_AsyncReader, NULL, CLSCTX_INPROC_SERVER, &IID_IBaseFilter, (LPVOID*)&preader); if (FAILED(hr)) { WARN("Unable to create file source filter (%x)\n", hr); return hr; @@ -1648,13 +1681,7 @@ static HRESULT WINAPI FilterGraph2_AddSourceFilter(IFilterGraph2 *iface, LPCWSTR goto error; } - /* Load the file in the file source filter */ - hr = IFileSourceFilter_Load(pfile, lpcwstrFileName, NULL); - if (FAILED(hr)) { - WARN("Load (%x)\n", hr); - goto error; - } - + /* The file has been already loaded */ IFileSourceFilter_GetCurFile(pfile, &filename, &mt); if (FAILED(hr)) { WARN("GetCurFile (%x)\n", hr);
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Alexandre Julliard