X-Git-Url: https://vcs.maemo.org/git/?a=blobdiff_plain;f=src%2Fhighgui%2Fcvcap_dshow.cpp;fp=src%2Fhighgui%2Fcvcap_dshow.cpp;h=e40bc9b10fe55b1872b0deeb11f02a776294e0ff;hb=e4c14cdbdf2fe805e79cd96ded236f57e7b89060;hp=0000000000000000000000000000000000000000;hpb=454138ff8a20f6edb9b65a910101403d8b520643;p=opencv

diff --git a/src/highgui/cvcap_dshow.cpp b/src/highgui/cvcap_dshow.cpp
new file mode 100644
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+++ b/src/highgui/cvcap_dshow.cpp
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+/*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