DirectShow Filter : 字幕叠加 （带注释）
资源文件列表(大概)
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/
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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/
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FilterTitleOverlay/Release/注册filter.bat
21B
FilterTitleOverlay/resource.h
1.04KB
资源内容介绍
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 <streams.h> // 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 <measure.h> // performance measurement (MSR_)#include <initguid.h>#if (1100 > _MSC_VER)#include <olectlid.h>#else#include <olectl.h>#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 charPBYTE 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MEdiaTypeCMediaType 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