DirectShow实现视频播放以及摄像头视频采集

MFC+DirectShow实现视频播放器，同事还可以摄像头采集视频，并播放出来

#include “StdAfx.h“
#include “MyCapPin.h“


CMyCapPin::CMyCapPin（void）
{
	CoInitialize（NULL）;
	m_CapGraph=NULL;
	m_pGraph=NULL;
	m_pSysDevEnum=NULL;
	m_pMoniker=NULL;
	m_pEnumCat=NULL;
	m_pWindow=NULL;
	m_pControl=NULL;
	m_pbaseFilter=NULL;
	m_hWnd=（HWND）INVALID_HANDLE_VALUE;
}


CMyCapPin::~CMyCapPin（void）
{
	CoUninitialize（）;
}

BOOL CMyCapPin::AddFilter（）
{
	HRESULT hr = CoCreateInstance（CLSID_CaptureGraphBuilder2 NULL CLSCTX_INPROC_SERVER
		IID_ICaptureGraphBuilder2 （void **）&m_CapGraph）;	
	if（SUCCEEDED（hr））
	{
		hr=CoCreateInstance（CLSID_FilterGraphNULLCLSCTX_INPROC_SERVERIID_IGraphBuilder（void**）&m_pGraph）;
		if （SUCCEEDED（hr））
		{
			m_CapGraph->SetFiltergraph（m_pGraph）;
		}
		else
		{
			m_CapGraph->Release（）;
			return FALSE;
		}
		
		return TRUE;
	}
	else
		return FALSE;
}
BOOL CMyCapPin::CreateDev（）
{
	HRESULT hr=CoCreateInstance（CLSID_SystemDeviceEnumNULLCLSCTX_INPROC_SERVERIID_ICreateDevEnum（void**）&m_pSysDevEnum）;	
		hr=m_pSysDevEnum->CreateClassEnumerator（CLSID_VideoInputDeviceCategory&m_pEnumCat0）;
		return SUCCEEDED（hr）;
	return FALSE;
}
void CMyCapPin::SetHwnd（HWND hWnd）
{
	m_hWnd=hWnd;
}
BOOL CMyCapPin::Create（void）
{
	HRESULT hr;
	if （!AddFilter（）||!CreateDev（））
	{
		
		return FALSE;
	}
	ULONG cFetched;
	while（m_pEnumCat->Next（1 &m_pMoniker &cFetched） == S_OK）
	{
			hr=m_pMoniker->BindToobject（00IID_IbaseFilter（void**）&m_pbaseFilter）;
			hr=m_pGraph->AddFilter（m_pbaseFilterL“Capture Filter“）;
			hr=m_CapGraph->RenderStream（&PIN_CATEGORY_PREVIEW&MEDIATYPE_Videom_pbaseFilterNULLNULL）;
			hr=m_pGraph->QueryInterface（IID_IVideoWindow（void**）&m_pWindow）;
			hr=m_pGraph->QueryInterface（IID_IMediaControl（void**）&m_pControl）;
			m_pControl->Run（）;
			m_pWindow->put_Owner（（OAHWND）m_hWnd）;
			m_pWindow->put_Windowstyle（WS_CHILD）;
			m_pWindow->get_Width（&pWidth）;
			m_pWindow->get_Height（&pHeight）;
			m_pWindow->SetWindowPosition（00pWidthpHeight）;
			m_pMoniker->Release（）;
	}
/*	m_pSysDevEnum->CreateClassEnumerator（CLSID_VideoCompressorCategory&m_pEnumCat0）;
	IPropertyBag* pProp= NULL;
	while （m_pEnumCat->Next（0&m_pMoniker&cFetched）==S_OK）
	{
		m_pMoniker->BindToStorage（00IID_IPropertyBag（VOID**）&pProp）; 
		VARIANT varName;
		varName.vt = VT_BSTR;
		pProp->Read（L“FriendlyName“ &varName0）;
		CString str=（char*）varName.bstrVal;
		if （str.Find（“Microsoft Video 1“0）!= -1）
		{
			m_pMoniker->BindToobject（0 0 IID_IbaseFilter （void**）&m_pCompress）;
			m_pMoniker->Release（）; 
			break;
		}
		VariantClear（&varName）;
	}
	m_pEnumCat->Release（）;
	if （m_pCompress==NULL）
	{
		AfxMessageBox（IDOK）;
		return;
	} 
	m_pGraph->AddFilter（m_pCompressL“com“）;
	CoCreateInstance（CLSID_AviDestNULL CLSCTX_ALL 
		IID_IbaseFilter（void**）&pMux）;
	pGraph->AddFilter（pMuxL“Mux“）;
	CoCreateInstance（CLSID_FileWriter NULL CLSCTX_ALL 
		IID_IbaseFilter （void **）&pWriter）;
	pGraph->AddFilter（pWriterL“Writer“）;
	p

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2013-11-07 21:17  Player\
     目录           0  2013-11-03 09:49  Player\Debug\
     文件      240128  2013-11-05 21:27  Player\Debug\Player.exe
     文件     1717160  2013-11-05 21:27  Player\Debug\Player.ilk
     文件     6532096  2013-11-05 21:27  Player\Debug\Player.pdb
     目录           0  2013-11-07 21:16  Player\ipch\
     目录           0  2013-11-07 21:16  Player\ipch\player-bf5bfe53\
     目录           0  2013-11-05 21:26  Player\Player\
     文件         885  2013-10-18 19:25  Player\Player.sln
     文件       30208  2013-11-07 21:17  Player\Player.suo
     文件         636  2013-10-19 14:32  Player\Player\ClassDiagram1.cd
     目录           0  2013-11-05 21:27  Player\Player\Debug\
     文件        4470  2013-11-05 21:27  Player\Player\Debug\cl.command.1.tlog
     文件       77628  2013-11-05 21:27  Player\Player\Debug\CL.read.1.tlog
     文件        6408  2013-11-05 21:27  Player\Player\Debug\CL.write.1.tlog
     文件           2  2013-11-05 21:27  Player\Player\Debug\link-cvtres.read.1.tlog
     文件           2  2013-11-05 21:27  Player\Player\Debug\link-cvtres.write.1.tlog
     文件           2  2013-11-05 21:27  Player\Player\Debug\link.6896-cvtres.read.1.tlog
     文件           2  2013-11-05 21:27  Player\Player\Debug\link.6896-cvtres.write.1.tlog
     文件           2  2013-11-05 21:27  Player\Player\Debug\link.6896.read.1.tlog
     文件           2  2013-11-05 21:27  Player\Player\Debug\link.6896.write.1.tlog
     文件           2  2013-11-05 21:27  Player\Player\Debug\link.6948-cvtres.read.1.tlog
     文件           2  2013-11-05 21:27  Player\Player\Debug\link.6948-cvtres.write.1.tlog
     文件           2  2013-11-05 21:27  Player\Player\Debug\link.6948.read.1.tlog
     文件           2  2013-11-05 21:27  Player\Player\Debug\link.6948.write.1.tlog
     文件           2  2013-11-05 21:27  Player\Player\Debug\link.8664-cvtres.read.1.tlog
     文件           2  2013-11-05 21:27  Player\Player\Debug\link.8664-cvtres.write.1.tlog
     文件           2  2013-11-05 21:27  Player\Player\Debug\link.8664.read.1.tlog
     文件           2  2013-11-05 21:27  Player\Player\Debug\link.8664.write.1.tlog
     文件        2308  2013-11-05 21:27  Player\Player\Debug\link.command.1.tlog
     文件        5746  2013-11-05 21:27  Player\Player\Debug\link.read.1.tlog
............此处省略49个文件信息