DirectShow显示USB摄像头

在VS2015下配置directshow和opencv。用来显示多个USB摄像头

//////////////////////////////////////////////////////////////////////
// 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
//////////////////////////////////////////////////////////////////////


//////////////////////////////////////////////////////////////////////
// 使用说明：
//   1. 将CameraDS.h CameraDS.cpp以及目录DirectShow复制到你的项目中
//   2. 菜单 Project->Settings->Settings for:（All configurations）->C/C++->Category（Preprocessor）->Additional include directories
//      设置为 DirectShow/Include
//   3. 菜单 Project->Settings->Settings for:（All configurations）->link->Category（Input）->Additional library directories
//      设置为 DirectShow/Lib
//////////////////////////////////////////////////////////////////////

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

#include “CameraDS.h“

#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;

	m_IsOpen = false;

	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;

	m_IsOpen = false;
}

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 （LPVOID*） &m_pNullFilter）;


	hr = m_pGraph->AddFilter（m_pNul

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件     196608  2006-02-28 18:04  DirectShow\bin\libguide40.dll

     文件        631  2008-02-27 14:52  DirectShow\include\activecf.h

     文件       1826  2008-02-27 14:52  DirectShow\include\amaudio.h

     文件       1065  2008-02-27 14:52  DirectShow\include\amparse.h

     文件      73261  2008-02-27 14:52  DirectShow\include\amstream.h

     文件       3974  2008-02-27 14:52  DirectShow\include\amva.h

     文件      19851  2008-02-27 14:52  DirectShow\include\Amvideo.h

     文件       1097  2008-02-27 14:52  DirectShow\include\atsmedia.h

     文件       1532  2008-02-27 14:52  DirectShow\include\audevcod.h

     文件      20543  2008-02-27 14:52  DirectShow\include\austream.h

     文件      13805  2008-02-27 14:52  DirectShow\include\aviriff.h

     文件       6820  2008-02-27 14:52  DirectShow\include\basetsd.h

     文件     125594  2008-02-27 14:52  DirectShow\include\bdaiface.h

     文件      54539  2008-02-27 14:52  DirectShow\include\bdamedia.h

     文件      53527  2008-02-27 14:52  DirectShow\include\Bdatif.h

     文件      15486  2008-02-27 14:52  DirectShow\include\bdatypes.h

     文件      11687  2010-05-31 09:25  DirectShow\include\CameraDS.cpp

     文件       3280  2010-05-31 09:26  DirectShow\include\CameraDS.h

     文件        944  2008-02-27 14:52  DirectShow\include\comlite.h

     文件     178266  2008-02-27 14:52  DirectShow\include\control.h

     文件      88071  2008-02-27 14:52  DirectShow\include\d3d.h

     文件      72232  2008-02-27 14:52  DirectShow\include\d3d8.h

     文件      16088  2008-02-27 14:52  DirectShow\include\d3d8caps.h

     文件      63735  2008-02-27 14:52  DirectShow\include\d3d8types.h

     文件      96132  2008-02-27 14:52  DirectShow\include\d3d9.h

     文件      22164  2008-02-27 14:52  DirectShow\include\d3d9caps.h

     文件      69800  2008-02-27 14:52  DirectShow\include\d3d9types.h

     文件      26113  2008-02-27 14:52  DirectShow\include\d3dcaps.h

     文件      14874  2008-02-27 14:52  DirectShow\include\d3drm.h

     文件      24261  2008-02-27 14:52  DirectShow\include\d3drmdef.h

............此处省略130个文件信息