--- /dev/null
+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
+// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+//
+// By downloading, copying, installing or using the software you agree to this license.
+// If you do not agree to this license, do not download, install,
+// copy or use the software.
+//
+//
+// Intel License Agreement
+// For Open Source Computer Vision Library
+//
+// Copyright (C) 2000, Intel Corporation, all rights reserved.
+// Third party copyrights are property of their respective owners.
+//
+// Redistribution and use in source and binary forms, with or without modification,
+// are permitted provided that the following conditions are met:
+//
+// * Redistribution's of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// * Redistribution's in binary form must reproduce the above copyright notice,
+// this list of conditions and the following disclaimer in the documentation
+// and/or other materials provided with the distribution.
+//
+// * The name of Intel Corporation may not be used to endorse or promote products
+// derived from this software without specific prior written permission.
+//
+// This software is provided by the copyright holders and contributors "as is" and
+// any express or implied warranties, including, but not limited to, the implied
+// warranties of merchantability and fitness for a particular purpose are disclaimed.
+// In no event shall the Intel Corporation or contributors be liable for any direct,
+// indirect, incidental, special, exemplary, or consequential damages
+// (including, but not limited to, procurement of substitute goods or services;
+// loss of use, data, or profits; or business interruption) however caused
+// and on any theory of liability, whether in contract, strict liability,
+// or tort (including negligence or otherwise) arising in any way out of
+// the use of this software, even if advised of the possibility of such damage.
+//
+//M*/
+
+#include "_highgui.h"
+
+#ifdef HAVE_VIDEOINPUT
+#include "videoinput.h"
+
+/********************* Capturing video from camera via VFW *********************/
+
+class CvCaptureCAM_DShow : public CvCapture
+{
+public:
+ CvCaptureCAM_DShow();
+ virtual ~CvCaptureCAM_DShow() { close(); }
+
+ virtual bool open( int index );
+ virtual void close();
+ virtual double getProperty(int);
+ virtual bool setProperty(int, double);
+ virtual bool grabFrame();
+ virtual IplImage* retrieveFrame(int);
+ virtual int getCaptureDomain() { return CV_CAP_DSHOW; } // Return the type of the capture object: CV_CAP_VFW, etc...
+
+protected:
+ void init();
+
+ int index;
+ IplImage* frame;
+ static videoInput VI;
+};
+
+
+struct SuppressVideoInputMessages
+{
+ SuppressVideoInputMessages() { videoInput::setVerbose(false); }
+};
+
+static SuppressVideoInputMessages do_it;
+videoInput CvCaptureCAM_DShow::VI;
+
+CvCaptureCAM_DShow::CvCaptureCAM_DShow()
+{
+ index = -1;
+ frame = 0;
+}
+
+void CvCaptureCAM_DShow::close()
+{
+ if( index >= 0 )
+ {
+ VI.stopDevice(index);
+ index = -1;
+ cvReleaseImage(&frame);
+ }
+}
+
+// Initialize camera input
+bool CvCaptureCAM_DShow::open( int _index )
+{
+ close();
+ VI.setupDevice(_index);
+ if( !VI.isDeviceSetup(_index) )
+ return false;
+ index = _index;
+ return true;
+}
+
+bool CvCaptureCAM_DShow::grabFrame()
+{
+ return true;
+}
+
+
+IplImage* CvCaptureCAM_DShow::retrieveFrame(int)
+{
+ if( !frame || VI.getWidth(index) != frame->width || VI.getHeight(index) != frame->height )
+ {
+ if (frame)
+ cvReleaseImage( &frame );
+ int w = VI.getWidth(index), h = VI.getHeight(index);
+ frame = cvCreateImage( cvSize(w,h), 8, 3 );
+ }
+
+ VI.getPixels( index, (uchar*)frame->imageData, false, true );
+ return frame;
+}
+
+double CvCaptureCAM_DShow::getProperty( int property_id )
+{
+ switch( property_id )
+ {
+ case CV_CAP_PROP_FRAME_WIDTH:
+ return VI.getWidth(index);
+ case CV_CAP_PROP_FRAME_HEIGHT:
+ return VI.getHeight(index);
+ case CV_CAP_PROP_FOURCC:
+ return 0;
+ }
+ return 0;
+}
+
+bool CvCaptureCAM_DShow::setProperty( int property_id, double value )
+{
+ int width = 0, height = 0;
+
+ switch( property_id )
+ {
+ case CV_CAP_PROP_FRAME_WIDTH:
+ width = cvRound(value);
+ height = width*3/4;
+ break;
+ case CV_CAP_PROP_FRAME_HEIGHT:
+ height = cvRound(value);
+ width = height*4/3;
+ default:
+ return false;
+ }
+
+ if( width != VI.getWidth(index) || height != VI.getHeight(index) )
+ {
+ VI.stopDevice(index);
+ VI.setupDevice(index, width, height);
+ }
+ return VI.isDeviceSetup(index);
+}
+
+
+CvCapture* cvCreateCameraCapture_DShow( int index )
+{
+ CvCaptureCAM_DShow* capture = new CvCaptureCAM_DShow;
+
+ if( capture->open( index ))
+ return capture;
+
+ delete capture;
+ return 0;
+}
+
+#ifdef _MSC_VER
+#pragma comment(lib, "videoInput.lib")
+#endif
+
+#endif