//////////////////////////////////////////////////////////////////////
//?Video?Capture?using?DirectShow
//?Author:?Shiqi?Yu?（shiqi.yu@gmail.com）
//?Thanks?to:
//		HardyAI@OpenCV?China
//		flymanbox@OpenCV?China?（for?his?contribution?to?function?CameraName?and?frame?width/height?setting）
//?Last?modification:?April?9?2009
//////////////////////////////////////////////////////////////////////


//////////////////////////////////////////////////////////////////////
//?使用說明：
//???1.?將CameraDS.h?CameraDS.cpp以及目錄DirectShow復制到你的項目中
//???2.?菜單?Project->Settings->Settings?for:（All?configurations）->C/C++->Category（Preprocessor）->Additional?include?directories
//??????設置為?DirectShow/Include
//???3.?菜單?Project->Settings->Settings?for:（All?configurations）->link->Category（Input）->Additional?library?directories
//??????設置為?DirectShow/Lib
//////////////////////////////////////////////////////////////////////

//?CameraDS.cpp:?implementation?of?the?CCameraDS?class.
//
//////////////////////////////////////////////////////////////////////

//#include?“CameraDS.h“?????????????????????//??2010.8.14?修改
#include?“stdafx.h“?????????????????????????//??2010.8.14?修改

#pragma?comment（lib“Strmiids.lib“）?
//////////////////////////////////////////////////////////////////////
//?Construction/Destruction
//////////////////////////////////////////////////////////////////////

CCameraDS::CCameraDS（）
{
	m_bConnected?=?false;
	m_nWidth?=?0;
	m_nHeight?=?0;
	m_bLock?=?false;
	m_bChanged?=?false;
	m_pframe?=?NULL;
	m_nBufferSize?=?0;

	m_pNullFilter?=?NULL;
	m_pMediaEvent?=?NULL;
	m_pSampleGrabberFilter?=?NULL;
	m_pGraph?=?NULL;

	CoInitialize（NULL）;
}

CCameraDS::~CCameraDS（）
{
	CloseCamera（）;
	CoUninitialize（）;
}

void?CCameraDS::CloseCamera（）
{
	if（m_bConnected）
		m_pMediaControl->Stop（）;

	m_pGraph?=?NULL;
	m_pDeviceFilter?=?NULL;
	m_pMediaControl?=?NULL;
	m_pSampleGrabberFilter?=?NULL;
	m_pSampleGrabber?=?NULL;
	m_pGrabberInput?=?NULL;
	m_pGrabberOutput?=?NULL;
	m_pCameraOutput?=?NULL;
	m_pMediaEvent?=?NULL;
	m_pNullFilter?=?NULL;
	m_pNullInputPin?=?NULL;


	if?（m_pframe）
		cvReleaseImage（&m_pframe）;

	m_bConnected?=?false;
	m_nWidth?=?0;
	m_nHeight?=?0;
	m_bLock?=?false;
	m_bChanged?=?false;
	m_nBufferSize?=?0;
}

bool?CCameraDS::OpenCamera（int?nCamID?bool?bDisplayProperties?int?nWidth?int?nHeight）
{
	
	HRESULT?hr?=?S_OK;

	CoInitialize（NULL）;
	//?Create?the?Filter?Graph?Manager.
	hr?=?CoCreateInstance（CLSID_FilterGraph?NULL?CLSCTX_INPROC
							IID_IGraphBuilder?（void?**）&m_pGraph）;

	hr?=?CoCreateInstance（CLSID_SampleGrabber?NULL?CLSCTX_INPROC_SERVER?
							IID_IbaseFilter?（LPVOID?*）&m_pSampleGrabberFilter）;

	hr?=?m_pGraph->QueryInterface（IID_IMediaControl?（void?**）?&m_pMediaControl）;
	hr?=?m_pGraph->QueryInterface（IID_IMediaEvent?（void?**）?&m_pMediaEvent）;

	hr?=?CoCreateInstance（CLSID_NullRenderer?NULL?CLSCTX_INPROC_SERVER
							IID_IbaseFilter?（LPV

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2011-12-23?09:21??OpenCV_MFC_版本1.0\
?????目錄???????????0??2011-12-23?09:20??OpenCV_MFC_版本1.0\CV_MFC版本1.0\
?????目錄???????????0??2011-12-23?09:20??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\
?????目錄???????????0??2011-12-23?09:20??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\
?????文件???????19851??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\Amvideo.h
?????文件???????53527??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\Bdatif.h
?????文件????????3214??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\DShow.h
?????文件????????8142??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\DxDiag.h
?????文件????????3715??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\Iwstdec.h
?????文件????????1510??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\Mpeg2Bits.h
?????文件????????4095??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\Mpeg2Error.h
?????文件??????277368??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\Mstvca.h
?????文件??????430711??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\Mstve.h
?????文件???????73978??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\Msvidctl.h
?????文件??????108028??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\Msvidctl.tlb
?????文件??????565095??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\Segment.h
?????文件???????53292??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\Tuner.tlb
?????文件?????????631??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\activecf.h
?????文件????????1826??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\amaudio.h
?????文件????????1065??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\amparse.h
?????文件???????73261??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\amstream.h
?????文件????????3974??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\amva.h
?????文件????????1097??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\atsmedia.h
?????文件????????1532??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\audevcod.h
?????文件???????20543??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\austream.h
?????文件???????13805??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\aviriff.h
?????文件????????6820??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\basetsd.h
?????文件??????125594??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\bdaiface.h
?????文件???????54539??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\bdamedia.h
?????文件???????15486??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\bdatypes.h
?????文件?????????944??2008-02-27?14:52??OpenCV_MFC_版本1.0\CV_MFC版本1.0\DirectShow\Include\comlite.h
............此處省略163個文件信息