DirectShow Filter : 字幕叠加（带注释）

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DirectShow Transform Filter最典型的例子，带注释，难度不大，学习必备博客对应文章http://blog.csdn.net/leixiaohua1020/article/details/12498975

// // CFilterTitleOverlay.cpp // #include // quartz, includes windows // Eliminate two expected level 4 warnings from the Microsoft compiler. // The class does not have an assignment or copy operator, and so cannot // be passed by value. This is normal. This file compiles clean at the // highest (most picky) warning level (-W4). #pragma warning(disable: 4511 4512) #include // performance measurement (MSR_) #include #if (1100 > _MSC_VER) #include #else #include #endif #include "CFilterTitleOverlay.h" #include "CTitleOverlayProp.h" #include "CSysTimeOverlayController.h" #include "CScrollController.h" //唯一标识符 // {E3FB4BFE-8E5C-4aec-8162-7DA55BE486A1} DEFINE_GUID(CLSID_HQTitleOverlay, 0xe3fb4bfe, 0x8e5c, 0x4aec, 0x81, 0x62, 0x7d, 0xa5, 0x5b, 0xe4, 0x86, 0xa1); // {E70FE57A-19AA-4a4c-B39A-408D49D73851} DEFINE_GUID(CLSID_HQTitleOverlayProp, 0xe70fe57a, 0x19aa, 0x4a4c, 0xb3, 0x9a, 0x40, 0x8d, 0x49, 0xd7, 0x38, 0x51); // // setup data // //注册时候的信息 const AMOVIESETUP_MEDIATYPE sudPinTypes = { &MEDIATYPE_NULL, // Major type &MEDIASUBTYPE_NULL // Minor type }; //注册时候的信息 const AMOVIESETUP_PIN psudPins[] = { { L"Input", // String pin name FALSE, // Is it rendered FALSE, // Is it an output FALSE, // Allowed none FALSE, // Allowed many &CLSID_NULL, // Connects to filter L"Output", // Connects to pin 1, // Number of types &sudPinTypes }, // The pin details { L"Output", // String pin name FALSE, // Is it rendered TRUE, // Is it an output FALSE, // Allowed none FALSE, // Allowed many &CLSID_NULL, // Connects to filter L"Input", // Connects to pin 1, // Number of types &sudPinTypes // The pin details } }; //注册时候的信息 const AMOVIESETUP_FILTER sudFilter = { &CLSID_HQTitleOverlay, // Filter CLSID L"HQ Title Overlay Std.", // Filter name MERIT_DO_NOT_USE, // Its merit 2, // Number of pins psudPins // Pin details }; // List of class IDs and creator functions for the class factory. This // provides the link between the OLE entry point in the DLL and an object // being created. The class factory will call the static CreateInstance //注意g_Templates名称是固定的 CFactoryTemplate g_Templates[] = { { L"HQ Title Overlay Std.", &CLSID_HQTitleOverlay, CFilterTitleOverlay::CreateInstance, NULL, &sudFilter }, { L"HQ Title Overlay Property Page", &CLSID_HQTitleOverlayProp, CTitleOverlayProp::CreateInstance } }; int g_cTemplates = sizeof(g_Templates) / sizeof(g_Templates[0]); // ---------------------------------------------------------------------------- // Filter implementation // ---------------------------------------------------------------------------- CFilterTitleOverlay::CFilterTitleOverlay(TCHAR *tszName, LPUNKNOWN punk, HRESULT *phr) : CTransInPlaceFilter(tszName, punk, CLSID_HQTitleOverlay, phr) { mOverlayType = OT_STATIC; mOverlayController = new COverlayController(); mNeedEstimateFrameRate = FALSE; char szTitle[] = "Hello, DirectShow!"; put_Title(szTitle, sizeof(szTitle)); } CFilterTitleOverlay::~CFilterTitleOverlay() { ReleaseOverlayController(); } void CFilterTitleOverlay::ReleaseOverlayController(void) { if (mOverlayController) { delete mOverlayController; mOverlayController = NULL; } } // // CreateInstance // // Override CClassFactory method. // Provide the way for COM to create a CNullInPlace object // //创建 CUnknown * WINAPI CFilterTitleOverlay::CreateInstance(LPUNKNOWN punk, HRESULT *phr) { #if 1 //防伪？？！！ char szCreatorPath[256], szCreatorName[256]; ::strcpy(szCreatorPath, ""); ::strcpy(szCreatorName, ""); HMODULE hModule = ::GetModuleHandle(NULL); ::GetModuleFileName(hModule, szCreatorPath, 256); char * backSlash = ::strrchr(szCreatorPath, '\\'); if (backSlash) { strcpy(szCreatorName, backSlash); } ::_strlwr(szCreatorName); // Please specify your app name with lowercase // 检查调用该Filter的程序 // 一开始调试不了，就卡在这了 = = if (::strstr(szCreatorName, "graphedit") == NULL && ::strstr(szCreatorName, "ourapp") == NULL) { *phr = E_FAIL; return NULL; } #endif //通过New对象的方法 CFilterTitleOverlay *pNewObject = new CFilterTitleOverlay(NAME("TitleOverlay"), punk, phr); if (pNewObject == NULL) { *phr = E_OUTOFMEMORY; } return pNewObject; } // // Basic COM - used here to reveal our own interfaces //暴露接口，使外部程序可以QueryInterface，关键！ STDMETHODIMP CFilterTitleOverlay::NonDelegatingQueryInterface(REFIID riid, void ** ppv) { CheckPointer(ppv, E_POINTER); //根据不同的REFIID，获得不同的接口指针 if (riid == IID_ISpecifyPropertyPages) { return GetInterface((ISpecifyPropertyPages *) this, ppv); } else if (riid == IID_ITitleOverlay) { return GetInterface((ITitleOverlay *) this, ppv); } else { //不是以上的REFIID的话，调用父类的 return CTransInPlaceFilter::NonDelegatingQueryInterface(riid, ppv); } } // NonDelegatingQueryInterface // Only RGB 32/24/565/555 supported HRESULT CFilterTitleOverlay::CheckInputType(const CMediaType* mtIn) { // Dynamic format change will never be allowed! if (IsStopped() && *mtIn->Type() == MEDIATYPE_Video) { if (*mtIn->Subtype() == MEDIASUBTYPE_RGB32 || *mtIn->Subtype() == MEDIASUBTYPE_RGB24 || *mtIn->Subtype() == MEDIASUBTYPE_RGB555 || *mtIn->Subtype() == MEDIASUBTYPE_RGB565) { return NOERROR; } } return E_INVALIDARG; } HRESULT CFilterTitleOverlay::Transform(IMediaSample *pSample) { // If we cann't read frame rate info from input pin's connection media type, // We estimate it from the first sample's time stamp! if (mNeedEstimateFrameRate) { mNeedEstimateFrameRate = FALSE; REFERENCE_TIME startTime = 0; REFERENCE_TIME endTime = 0; double estimated = 25; if (SUCCEEDED(pSample->GetTime(&startTime, &endTime))) { estimated = 1.0 * UNITS / (endTime - startTime); } mOverlayController->SetEstimatedFrameRate(estimated); } if (mOverlayType != OT_NONE) { //PBYTE是unsigned char PBYTE pData = NULL; //获取IMediaSample中的数据 pSample->GetPointer(&pData); //叠加 mOverlayController->DoTitleOverlay(pData); } return NOERROR; } HRESULT CFilterTitleOverlay::SetInputVideoInfoToController(void) { if (mOverlayController && m_pInput && m_pInput->IsConnected()) { //当前MEdiaType CMediaType mt = m_pInput->CurrentMediaType(); if (mt.formattype != FORMAT_VideoInfo) { return E_FAIL; } RGB_FORMAT colorSpace = FT_NONE; if (mt.subtype == MEDIASUBTYPE_RGB32) // Determine RGB format { colorSpace = FT_RGB32; } else if (mt.subtype == MEDIASUBTYPE_RGB24) { colorSpace = FT_RGB24; } else if (mt.subtype == MEDIASUBTYPE_RGB555) { colorSpace = FT_RGB555; } else if (mt.subtype == MEDIASUBTYPE_RGB565) { colorSpace = FT_RGB565; } else if (mt.subtype == MEDIASUBTYPE_RGB8) { colorSpace = FT_RGB8; } mOverlayController->SetInputColorSpace(colorSpace); VIDEOINFOHEADER * pHeader = (VIDEOINFOHEADER *) mt.pbFormat; mNeedEstimateFrameRate = pHeader->AvgTimePerFrame > 0 ? FALSE : TRUE; mOverlayController->SetInputVideoInfo(pHeader); return NOERROR; } return E_FAIL; } HRESULT CFilterTitleOverlay::CompleteConnect(PIN_DIRECTION direction, IPin *pReceivePin) { HRESUL

资源文件列表:

FilterTitleOverlay.zip 大约有44个文件

FilterTitleOverlay/
FilterTitleOverlay/CAutoFont.cpp 2.06KB
FilterTitleOverlay/CAutoFont.h 518B
FilterTitleOverlay/CBasePixel.cpp 1.06KB
FilterTitleOverlay/CBasePixel.h 925B
FilterTitleOverlay/CFilterTitleOverlay.cpp 13.12KB
FilterTitleOverlay/CFilterTitleOverlay.h 2.4KB
FilterTitleOverlay/COverlayController.cpp 11.77KB
FilterTitleOverlay/COverlayController.h 3.12KB
FilterTitleOverlay/CPixelRGB24.cpp 419B
FilterTitleOverlay/CPixelRGB24.h 280B
FilterTitleOverlay/CPixelRGB32.cpp 450B
FilterTitleOverlay/CPixelRGB32.h 315B
FilterTitleOverlay/CPixelRGB555.cpp 1KB
FilterTitleOverlay/CPixelRGB555.h 407B
FilterTitleOverlay/CPixelRGB565.cpp 1KB
FilterTitleOverlay/CPixelRGB565.h 408B
FilterTitleOverlay/CPixelRGB8.cpp 1.44KB
FilterTitleOverlay/CPixelRGB8.h 487B
FilterTitleOverlay/CScrollController.cpp 3.99KB
FilterTitleOverlay/CScrollController.h 832B
FilterTitleOverlay/CSysTimeOverlayController.cpp 1.33KB
FilterTitleOverlay/CSysTimeOverlayController.h 492B
FilterTitleOverlay/CTitleOverlayProp.cpp 10.38KB
FilterTitleOverlay/CTitleOverlayProp.h 1.61KB
FilterTitleOverlay/Debug/
FilterTitleOverlay/Debug/注册filter(new).bat 31B
FilterTitleOverlay/Debug/注册filter.bat 21B
FilterTitleOverlay/FilterGraph1.jpg 22.64KB
FilterTitleOverlay/FilterTitleOverlay.aps 20.97KB
FilterTitleOverlay/FilterTitleOverlay.def 226B
FilterTitleOverlay/FilterTitleOverlay.dsp 7.73KB
FilterTitleOverlay/FilterTitleOverlay.ilk 1.35MB
FilterTitleOverlay/FilterTitleOverlay.rc 4.85KB
FilterTitleOverlay/FilterTitleOverlay.sln 902B
FilterTitleOverlay/FilterTitleOverlay.suo 35.5KB
FilterTitleOverlay/FilterTitleOverlay.vcxproj 10.29KB
FilterTitleOverlay/FilterTitleOverlay.vcxproj.filters 4.42KB
FilterTitleOverlay/FilterTitleOverlay.vcxproj.user 659B
FilterTitleOverlay/ITitleOverlay.h 2.57KB
FilterTitleOverlay/OverlayDefs.h 425B
FilterTitleOverlay/Release/
FilterTitleOverlay/Release/注册filter.bat 21B
FilterTitleOverlay/resource.h 1.04KB

DirectShow Filter : 字幕叠加 （带注释）

资源介绍:

资源文件列表:

DirectShow Filter : 字幕叠加（带注释）