258 lines
6.9 KiB
C++
258 lines
6.9 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// Intel License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000, Intel Corporation, all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of Intel Corporation may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#include "_highgui.h"
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#if _MSC_VER >= 1200
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#pragma warning( disable: 4711 )
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#endif
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#if defined WIN64 && defined EM64T && defined _MSC_VER && !defined __ICL
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#pragma optimize("",off)
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#endif
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/************************* Reading AVIs & Camera data **************************/
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CV_IMPL void cvReleaseCapture( CvCapture** pcapture )
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{
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if( pcapture && *pcapture )
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{
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CvCapture* capture = *pcapture;
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if( capture && capture->vtable &&
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capture->vtable->count >= CV_CAPTURE_BASE_API_COUNT &&
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capture->vtable->close )
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capture->vtable->close( capture );
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cvFree( pcapture );
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}
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}
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CV_IMPL IplImage* cvQueryFrame( CvCapture* capture )
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{
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if( capture && capture->vtable &&
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capture->vtable->count >= CV_CAPTURE_BASE_API_COUNT &&
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capture->vtable->grab_frame && capture->vtable->retrieve_frame &&
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capture->vtable->grab_frame( capture ))
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return capture->vtable->retrieve_frame( capture );
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return 0;
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}
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CV_IMPL int cvGrabFrame( CvCapture* capture )
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{
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if( capture && capture->vtable &&
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capture->vtable->count >= CV_CAPTURE_BASE_API_COUNT &&
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capture->vtable->grab_frame )
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return capture->vtable->grab_frame( capture );
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return 0;
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}
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CV_IMPL IplImage* cvRetrieveFrame( CvCapture* capture )
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{
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if( capture && capture->vtable &&
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capture->vtable->count >= CV_CAPTURE_BASE_API_COUNT &&
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capture->vtable->retrieve_frame )
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return capture->vtable->retrieve_frame( capture );
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return 0;
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}
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CV_IMPL double cvGetCaptureProperty( CvCapture* capture, int id )
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{
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if( capture && capture->vtable &&
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capture->vtable->count >= CV_CAPTURE_BASE_API_COUNT &&
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capture->vtable->get_property )
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return capture->vtable->get_property( capture, id );
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return 0;
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}
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CV_IMPL int cvSetCaptureProperty( CvCapture* capture, int id, double value )
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{
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if( capture && capture->vtable &&
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capture->vtable->count >= CV_CAPTURE_BASE_API_COUNT &&
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capture->vtable->set_property )
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return capture->vtable->set_property( capture, id, value );
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return 0;
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}
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/**
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* Camera dispatching method: index is the camera number.
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* If given an index from 0 to 99, it tries to find the first
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* API that can access a given camera index.
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* Add multiples of 100 to select an API.
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*/
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CV_IMPL CvCapture * cvCaptureFromCAM (int index)
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{
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int domains[] =
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{
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CV_CAP_IEEE1394, // identical to CV_CAP_DC1394
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CV_CAP_STEREO,
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CV_CAP_VFW, // identical to CV_CAP_V4L
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CV_CAP_MIL,
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CV_CAP_QT,
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-1
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};
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// interpret preferred interface (0 = autodetect)
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int pref = (index / 100) * 100;
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if (pref)
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{
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domains[0]=pref;
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index %= 100;
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domains[1]=-1;
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}
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// try every possibly installed camera API
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for (int i = 0; domains[i] >= 0; i++)
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{
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// local variable to memorize the captured device
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CvCapture *capture;
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switch (domains[i])
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{
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#ifdef HAVE_TYZX
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case CV_CAP_STEREO:
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capture = cvCaptureFromCAM_TYZX (index);
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if (capture)
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return capture;
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#endif
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#if defined (HAVE_VFW)
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case CV_CAP_VFW:
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capture = cvCaptureFromCAM_VFW (index);
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if (capture)
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return capture;
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#elif defined (HAVE_CAMV4L) || defined (HAVE_CAMV4L2)
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case CV_CAP_V4L:
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capture = cvCaptureFromCAM_V4L (index);
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if (capture)
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return capture;
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#endif
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#if defined (HAVE_DC1394)
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case CV_CAP_DC1394:
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capture = cvCaptureFromCAM_DC1394 (index);
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if (capture)
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return capture;
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#elif defined (HAVE_CMU1394)
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case CV_CAP_IEEE1394:
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capture = cvCaptureFromCAM_CMU (index);
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if (capture)
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return capture;
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#endif
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#ifdef HAVE_MIL
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case CV_CAP_MIL:
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capture = cvCaptureFromCAM_MIL (index);
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if (capture)
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return capture;
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#endif
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#ifdef HAVE_QUICKTIME
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case CV_CAP_QT:
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capture = cvCaptureFromCAM_QT (index);
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if (capture)
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return capture;
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#endif
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}
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}
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// failed open a camera
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return 0;
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}
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/**
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* Videoreader dispatching method: it tries to find the first
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* API that can access a given filename.
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*/
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CV_IMPL CvCapture * cvCaptureFromFile (const char * filename)
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{
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CvCapture * result = 0;
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#ifdef HAVE_VFW
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if (! result)
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result = cvCaptureFromFile_VFW (filename);
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#endif
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#ifdef HAVE_XINE
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if (! result)
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result = cvCaptureFromFile_XINE (filename);
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#endif
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#ifdef HAVE_FFMPEG
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if (! result)
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result = cvCaptureFromFile_FFMPEG (filename);
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#endif
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#ifdef HAVE_QUICKTIME
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if (! result)
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result = cvCaptureFromFile_QT (filename);
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#endif
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return result;
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}
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#ifndef HAVE_FFMPEG
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#ifndef HAVE_VFW
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#ifndef HAVE_QUICKTIME
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// quick fix for rc1
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CV_IMPL CvVideoWriter* cvCreateVideoWriter( const char* filename, int fourcc,
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double fps, CvSize frameSize, int is_color )
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{
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return 0;
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}
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CV_IMPL int cvWriteFrame( CvVideoWriter* _writer, const IplImage* image )
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{
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return 0;
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}
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CV_IMPL void cvReleaseVideoWriter( CvVideoWriter** writer )
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{
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}
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#endif
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#endif
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#endif
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