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https://github.com/hrydgard/ppsspp.git
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150 lines
3.6 KiB
C++
150 lines
3.6 KiB
C++
// A simple stream source filter based on the sample code
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// It requires DirectShow BasicClass for compiling
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#include <streams.h>
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#include "asyncio.h"
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#include "asyncrdr.h"
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#pragma warning(disable:4710) // 'function' not inlined (optimization)
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#include "asyncflt.h"
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//
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// Setup data for filter registration
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//
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const AMOVIESETUP_MEDIATYPE sudOpPinTypes =
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{ &MEDIATYPE_Stream // clsMajorType
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, &MEDIASUBTYPE_NULL }; // clsMinorType
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const AMOVIESETUP_PIN sudOpPin =
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{ L"Output" // strName
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, FALSE // bRendered
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, TRUE // bOutput
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, FALSE // bZero
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, FALSE // bMany
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, &CLSID_NULL // clsConnectsToFilter
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, L"Input" // strConnectsToPin
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, 1 // nTypes
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, &sudOpPinTypes }; // lpTypes
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const AMOVIESETUP_FILTER sudAsync =
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{ &CLSID_AsyncStreamSource // clsID
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, L"Stream/File Source (Async.)" // strName
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, MERIT_UNLIKELY // dwMerit
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, 1 // nPins
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, &sudOpPin }; // lpPin
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//
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// Object creation template
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//
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CFactoryTemplate g_Templates[1] = {
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{ L"Stream/File Source (Async.)"
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, &CLSID_AsyncStreamSource
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, CAsyncFilter::CreateInstance
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, NULL
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, &sudAsync }
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};
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int g_cTemplates = sizeof(g_Templates) / sizeof(g_Templates[0]);
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////////////////////////////////////////////////////////////////////////
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//
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// Exported entry points for registration and unregistration
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// (in this case they only call through to default implementations).
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//
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////////////////////////////////////////////////////////////////////////
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STDAPI DllRegisterServer()
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{
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return AMovieDllRegisterServer2(TRUE);
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}
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STDAPI DllUnregisterServer()
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{
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return AMovieDllRegisterServer2(FALSE);
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}
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//
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// DllEntryPoint
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//
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extern "C" BOOL WINAPI DllEntryPoint(HINSTANCE, ULONG, LPVOID);
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BOOL APIENTRY DllMain(HANDLE hModule,
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DWORD dwReason,
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LPVOID lpReserved)
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{
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return DllEntryPoint((HINSTANCE)(hModule), dwReason, lpReserved);
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}
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//* Create a new instance of this class
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CUnknown * WINAPI CAsyncFilter::CreateInstance(LPUNKNOWN pUnk, HRESULT *phr)
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{
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ASSERT(phr);
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// DLLEntry does the right thing with the return code and
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// the returned value on failure
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return new CAsyncFilter(pUnk, phr);
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}
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BOOL CAsyncFilter::ReadTheFile(LPCTSTR lpszFileName)
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{
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DWORD dwBytesRead;
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// Open the requested file
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HANDLE hFile = CreateFile(lpszFileName,
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GENERIC_READ,
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FILE_SHARE_READ,
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NULL,
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OPEN_EXISTING,
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0,
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NULL);
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if (hFile == INVALID_HANDLE_VALUE)
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{
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DbgLog((LOG_TRACE, 2, TEXT("Could not open %s\n"), lpszFileName));
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return FALSE;
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}
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// Determine the file size
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ULARGE_INTEGER uliSize;
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uliSize.LowPart = GetFileSize(hFile, &uliSize.HighPart);
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PBYTE pbMem = new BYTE[uliSize.LowPart];
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if (pbMem == NULL)
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{
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CloseHandle(hFile);
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return FALSE;
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}
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// Read the data from the file
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if (!ReadFile(hFile,
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(LPVOID) pbMem,
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uliSize.LowPart,
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&dwBytesRead,
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NULL) ||
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(dwBytesRead != uliSize.LowPart))
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{
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DbgLog((LOG_TRACE, 1, TEXT("Could not read file\n")));
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delete [] pbMem;
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CloseHandle(hFile);
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return FALSE;
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}
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// Save a pointer to the data that was read from the file
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if (m_pbData)
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delete [] m_pbData;
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m_pbData = pbMem;
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m_llSize = (LONGLONG)uliSize.QuadPart;
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// Close the file
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CloseHandle(hFile);
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return TRUE;
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}
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