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1 /*M///////////////////////////////////////////////////////////////////////////////////////
2 //
3 //  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
4 //
5 //  By downloading, copying, installing or using the software you agree to this license.
6 //  If you do not agree to this license, do not download, install,
7 //  copy or use the software.
8 //
9 //
10 //                        Intel License Agreement
11 //                For Open Source Computer Vision Library
12 //
13 // Copyright (C) 2000, Intel Corporation, all rights reserved.
14 // Third party copyrights are property of their respective owners.
15 //
16 // Redistribution and use in source and binary forms, with or without modification,
17 // are permitted provided that the following conditions are met:
18 //
19 //   * Redistribution's of source code must retain the above copyright notice,
20 //     this list of conditions and the following disclaimer.
21 //
22 //   * Redistribution's in binary form must reproduce the above copyright notice,
23 //     this list of conditions and the following disclaimer in the documentation
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25 //
26 //   * The name of Intel Corporation may not be used to endorse or promote products
27 //     derived from this software without specific prior written permission.
28 //
29 // This software is provided by the copyright holders and contributors "as is" and
30 // any express or implied warranties, including, but not limited to, the implied
31 // warranties of merchantability and fitness for a particular purpose are disclaimed.
32 // In no event shall the Intel Corporation or contributors be liable for any direct,
33 // indirect, incidental, special, exemplary, or consequential damages
34 // (including, but not limited to, procurement of substitute goods or services;
35 // loss of use, data, or profits; or business interruption) however caused
36 // and on any theory of liability, whether in contract, strict liability,
37 // or tort (including negligence or otherwise) arising in any way out of
38 // the use of this software, even if advised of the possibility of such damage.
39 //
40 //M*/
41 
42 #include "precomp.hpp"
43 #include "cap_intelperc.hpp"
44 #include "cap_dshow.hpp"
45 
46 // All WinRT versions older than 8.0 should provide classes used for video support
47 #if defined(WINRT) && !defined(WINRT_8_0)
48 #   include "cap_winrt_capture.hpp"
49 #   include "cap_winrt_bridge.hpp"
50 #   define WINRT_VIDEO
51 #endif
52 
53 #if defined _M_X64 && defined _MSC_VER && !defined CV_ICC
54 #pragma optimize("",off)
55 #pragma warning(disable: 4748)
56 #endif
57 
58 namespace cv
59 {
60 
operator ()(CvCapture * obj) const61 template<> void DefaultDeleter<CvCapture>::operator ()(CvCapture* obj) const
62 { cvReleaseCapture(&obj); }
63 
operator ()(CvVideoWriter * obj) const64 template<> void DefaultDeleter<CvVideoWriter>::operator ()(CvVideoWriter* obj) const
65 { cvReleaseVideoWriter(&obj); }
66 
67 }
68 
69 /************************* Reading AVIs & Camera data **************************/
70 
icvGetCaptureProperty(const CvCapture * capture,int id)71 static inline double icvGetCaptureProperty( const CvCapture* capture, int id )
72 {
73     return capture ? capture->getProperty(id) : 0;
74 }
75 
cvReleaseCapture(CvCapture ** pcapture)76 CV_IMPL void cvReleaseCapture( CvCapture** pcapture )
77 {
78     if( pcapture && *pcapture )
79     {
80         delete *pcapture;
81         *pcapture = 0;
82     }
83 }
84 
cvQueryFrame(CvCapture * capture)85 CV_IMPL IplImage* cvQueryFrame( CvCapture* capture )
86 {
87     if(!capture)
88         return 0;
89     if(!capture->grabFrame())
90         return 0;
91     return capture->retrieveFrame(0);
92 }
93 
94 
cvGrabFrame(CvCapture * capture)95 CV_IMPL int cvGrabFrame( CvCapture* capture )
96 {
97     return capture ? capture->grabFrame() : 0;
98 }
99 
cvRetrieveFrame(CvCapture * capture,int idx)100 CV_IMPL IplImage* cvRetrieveFrame( CvCapture* capture, int idx )
101 {
102     return capture ? capture->retrieveFrame(idx) : 0;
103 }
104 
cvGetCaptureProperty(CvCapture * capture,int id)105 CV_IMPL double cvGetCaptureProperty( CvCapture* capture, int id )
106 {
107     return icvGetCaptureProperty(capture, id);
108 }
109 
cvSetCaptureProperty(CvCapture * capture,int id,double value)110 CV_IMPL int cvSetCaptureProperty( CvCapture* capture, int id, double value )
111 {
112     return capture ? capture->setProperty(id, value) : 0;
113 }
114 
cvGetCaptureDomain(CvCapture * capture)115 CV_IMPL int cvGetCaptureDomain( CvCapture* capture)
116 {
117     return capture ? capture->getCaptureDomain() : 0;
118 }
119 
120 
121 /**
122  * Camera dispatching method: index is the camera number.
123  * If given an index from 0 to 99, it tries to find the first
124  * API that can access a given camera index.
125  * Add multiples of 100 to select an API.
126  */
cvCreateCameraCapture(int index)127 CV_IMPL CvCapture * cvCreateCameraCapture (int index)
128 {
129     int  domains[] =
130     {
131 #ifdef HAVE_MSMF
132         CV_CAP_MSMF,
133 #endif
134 #if 1
135         CV_CAP_IEEE1394,   // identical to CV_CAP_DC1394
136 #endif
137 #ifdef HAVE_TYZX
138         CV_CAP_STEREO,
139 #endif
140 #ifdef HAVE_PVAPI
141         CV_CAP_PVAPI,
142 #endif
143 #if 1
144         CV_CAP_VFW,        // identical to CV_CAP_V4L
145 #endif
146 #ifdef HAVE_MIL
147         CV_CAP_MIL,
148 #endif
149 #if defined(HAVE_QUICKTIME) || defined(HAVE_QTKIT)
150         CV_CAP_QT,
151 #endif
152 #ifdef HAVE_UNICAP
153         CV_CAP_UNICAP,
154 #endif
155 #ifdef HAVE_OPENNI
156         CV_CAP_OPENNI,
157 #endif
158 #ifdef HAVE_OPENNI2
159         CV_CAP_OPENNI2,
160 #endif
161 #ifdef HAVE_XIMEA
162         CV_CAP_XIAPI,
163 #endif
164 #ifdef HAVE_AVFOUNDATION
165         CV_CAP_AVFOUNDATION,
166 #endif
167 #ifdef HAVE_GIGE_API
168         CV_CAP_GIGANETIX,
169 #endif
170 #ifdef HAVE_INTELPERC
171         CV_CAP_INTELPERC,
172 #endif
173         -1
174     };
175 
176     // interpret preferred interface (0 = autodetect)
177     int pref = (index / 100) * 100;
178     if (pref)
179     {
180         domains[0]=pref;
181         index %= 100;
182         domains[1]=-1;
183     }
184 
185     // try every possibly installed camera API
186     for (int i = 0; domains[i] >= 0; i++)
187     {
188 #if defined(HAVE_MSMF)         || \
189     defined(HAVE_TYZX)         || \
190     defined(HAVE_VFW)          || \
191     defined(HAVE_LIBV4L)       || \
192     defined(HAVE_CAMV4L)       || \
193     defined(HAVE_CAMV4L2)      || \
194     defined(HAVE_VIDEOIO)      || \
195     defined(HAVE_GSTREAMER)    || \
196     defined(HAVE_DC1394_2)     || \
197     defined(HAVE_DC1394)       || \
198     defined(HAVE_CMU1394)      || \
199     defined(HAVE_MIL)          || \
200     defined(HAVE_QUICKTIME)    || \
201     defined(HAVE_QTKIT)        || \
202     defined(HAVE_UNICAP)       || \
203     defined(HAVE_PVAPI)        || \
204     defined(HAVE_OPENNI)       || \
205     defined(HAVE_OPENNI2)      || \
206     defined(HAVE_XIMEA)        || \
207     defined(HAVE_AVFOUNDATION) || \
208     defined(HAVE_GIGE_API) || \
209     defined(HAVE_INTELPERC)    || \
210     (0)
211         // local variable to memorize the captured device
212         CvCapture *capture;
213 #endif
214 
215         switch (domains[i])
216         {
217 #ifdef HAVE_MSMF
218         case CV_CAP_MSMF:
219              capture = cvCreateCameraCapture_MSMF (index);
220              if (capture)
221                  return capture;
222             break;
223 #endif
224 #ifdef HAVE_TYZX
225         case CV_CAP_STEREO:
226             capture = cvCreateCameraCapture_TYZX (index);
227             if (capture)
228                 return capture;
229             break;
230 #endif
231         case CV_CAP_VFW:
232 #ifdef HAVE_VFW
233             capture = cvCreateCameraCapture_VFW (index);
234             if (capture)
235                 return capture;
236 #endif
237 #if defined HAVE_LIBV4L || defined HAVE_CAMV4L || defined HAVE_CAMV4L2 || defined HAVE_VIDEOIO
238             capture = cvCreateCameraCapture_V4L (index);
239             if (capture)
240                 return capture;
241 #endif
242 
243 #ifdef HAVE_GSTREAMER
244             capture = cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_V4L2, 0);
245             if (capture)
246                 return capture;
247             capture = cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_V4L, 0);
248             if (capture)
249                 return capture;
250 #endif
251             break; //CV_CAP_VFW
252 
253         case CV_CAP_FIREWIRE:
254 #ifdef HAVE_DC1394_2
255             capture = cvCreateCameraCapture_DC1394_2 (index);
256             if (capture)
257                 return capture;
258 #endif
259 
260 #ifdef HAVE_DC1394
261             capture = cvCreateCameraCapture_DC1394 (index);
262             if (capture)
263                 return capture;
264 #endif
265 
266 #ifdef HAVE_CMU1394
267             capture = cvCreateCameraCapture_CMU (index);
268             if (capture)
269                 return capture;
270 #endif
271 
272 #if defined(HAVE_GSTREAMER) && 0
273             //Re-enable again when gstreamer 1394 support will land in the backend code
274             capture = cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_1394, 0);
275             if (capture)
276                 return capture;
277 #endif
278             break; //CV_CAP_FIREWIRE
279 
280 #ifdef HAVE_MIL
281         case CV_CAP_MIL:
282             capture = cvCreateCameraCapture_MIL (index);
283             if (capture)
284                 return capture;
285             break;
286 #endif
287 
288 #if defined(HAVE_QUICKTIME) || defined(HAVE_QTKIT)
289         case CV_CAP_QT:
290             capture = cvCreateCameraCapture_QT (index);
291             if (capture)
292                 return capture;
293             break;
294 #endif
295 
296 #ifdef HAVE_UNICAP
297         case CV_CAP_UNICAP:
298             capture = cvCreateCameraCapture_Unicap (index);
299             if (capture)
300                 return capture;
301         break;
302 #endif
303 
304 #ifdef HAVE_PVAPI
305         case CV_CAP_PVAPI:
306             capture = cvCreateCameraCapture_PvAPI (index);
307             if (capture)
308                 return capture;
309         break;
310 #endif
311 
312 #ifdef HAVE_OPENNI
313         case CV_CAP_OPENNI:
314             capture = cvCreateCameraCapture_OpenNI (index);
315             if (capture)
316                 return capture;
317         break;
318 #endif
319 
320 #ifdef HAVE_OPENNI2
321         case CV_CAP_OPENNI2:
322             capture = cvCreateCameraCapture_OpenNI(index);
323             if (capture)
324                 return capture;
325             break;
326 #endif
327 
328 #ifdef HAVE_XIMEA
329         case CV_CAP_XIAPI:
330             capture = cvCreateCameraCapture_XIMEA (index);
331             if (capture)
332                 return capture;
333         break;
334 #endif
335 
336 #ifdef HAVE_AVFOUNDATION
337         case CV_CAP_AVFOUNDATION:
338             capture = cvCreateCameraCapture_AVFoundation (index);
339             if (capture)
340                 return capture;
341         break;
342 #endif
343 
344 #ifdef HAVE_GIGE_API
345         case CV_CAP_GIGANETIX:
346             capture = cvCreateCameraCapture_Giganetix (index);
347             if (capture)
348                 return capture;
349         break; // CV_CAP_GIGANETIX
350 #endif
351         }
352     }
353 
354     // failed open a camera
355     return 0;
356 }
357 
358 /**
359  * Videoreader dispatching method: it tries to find the first
360  * API that can access a given filename.
361  */
cvCreateFileCapture(const char * filename)362 CV_IMPL CvCapture * cvCreateFileCapture (const char * filename)
363 {
364     CvCapture * result = 0;
365 
366 #ifdef HAVE_FFMPEG
367     if (! result)
368         result = cvCreateFileCapture_FFMPEG_proxy (filename);
369 #endif
370 
371 #ifdef HAVE_VFW
372     if (! result)
373         result = cvCreateFileCapture_VFW (filename);
374 #endif
375 
376 #ifdef HAVE_MSMF
377     if (! result)
378         result = cvCreateFileCapture_MSMF (filename);
379 #endif
380 
381 #ifdef HAVE_XINE
382     if (! result)
383         result = cvCreateFileCapture_XINE (filename);
384 #endif
385 
386 #ifdef HAVE_GSTREAMER
387     if (! result)
388         result = cvCreateCapture_GStreamer (CV_CAP_GSTREAMER_FILE, filename);
389 #endif
390 
391 #if defined(HAVE_QUICKTIME) || defined(HAVE_QTKIT)
392     if (! result)
393         result = cvCreateFileCapture_QT (filename);
394 #endif
395 
396 #ifdef HAVE_AVFOUNDATION
397     if (! result)
398         result = cvCreateFileCapture_AVFoundation (filename);
399 #endif
400 
401 #ifdef HAVE_OPENNI
402     if (! result)
403         result = cvCreateFileCapture_OpenNI (filename);
404 #endif
405 
406     if (! result)
407         result = cvCreateFileCapture_Images (filename);
408 
409     return result;
410 }
411 
412 /**
413  * Videowriter dispatching method: it tries to find the first
414  * API that can write a given stream.
415  */
cvCreateVideoWriter(const char * filename,int fourcc,double fps,CvSize frameSize,int is_color)416 CV_IMPL CvVideoWriter* cvCreateVideoWriter( const char* filename, int fourcc,
417                                             double fps, CvSize frameSize, int is_color )
418 {
419     //CV_FUNCNAME( "cvCreateVideoWriter" );
420 
421     CvVideoWriter *result = 0;
422 
423     if(!fourcc || !fps)
424         result = cvCreateVideoWriter_Images(filename);
425 
426 #ifdef HAVE_FFMPEG
427     if(!result)
428         result = cvCreateVideoWriter_FFMPEG_proxy (filename, fourcc, fps, frameSize, is_color);
429 #endif
430 
431 #ifdef HAVE_VFW
432     if(!result)
433         result = cvCreateVideoWriter_VFW(filename, fourcc, fps, frameSize, is_color);
434 #endif
435 
436 #ifdef HAVE_MSMF
437     if (!result)
438         result = cvCreateVideoWriter_MSMF(filename, fourcc, fps, frameSize, is_color);
439 #endif
440 
441 /*  #ifdef HAVE_XINE
442     if(!result)
443         result = cvCreateVideoWriter_XINE(filename, fourcc, fps, frameSize, is_color);
444     #endif
445 */
446 #ifdef HAVE_AVFOUNDATION
447     if (! result)
448         result = cvCreateVideoWriter_AVFoundation(filename, fourcc, fps, frameSize, is_color);
449 #endif
450 
451 #if defined(HAVE_QUICKTIME) || defined(HAVE_QTKIT)
452     if(!result)
453         result = cvCreateVideoWriter_QT(filename, fourcc, fps, frameSize, is_color);
454 #endif
455 
456 #ifdef HAVE_GSTREAMER
457     if (! result)
458         result = cvCreateVideoWriter_GStreamer(filename, fourcc, fps, frameSize, is_color);
459 #endif
460 
461 #if !defined(HAVE_FFMPEG) && \
462     !defined(HAVE_VFW) && \
463     !defined(HAVE_MSMF) && \
464     !defined(HAVE_AVFOUNDATION) && \
465     !defined(HAVE_QUICKTIME) && \
466     !defined(HAVE_QTKIT) && \
467     !defined(HAVE_GSTREAMER)
468 // If none of the writers is used
469 // these statements suppress 'unused parameter' warnings.
470     (void)frameSize;
471     (void)is_color;
472 #endif
473 
474     if(!result)
475         result = cvCreateVideoWriter_Images(filename);
476 
477     return result;
478 }
479 
cvWriteFrame(CvVideoWriter * writer,const IplImage * image)480 CV_IMPL int cvWriteFrame( CvVideoWriter* writer, const IplImage* image )
481 {
482     return writer ? writer->writeFrame(image) : 0;
483 }
484 
cvReleaseVideoWriter(CvVideoWriter ** pwriter)485 CV_IMPL void cvReleaseVideoWriter( CvVideoWriter** pwriter )
486 {
487     if( pwriter && *pwriter )
488     {
489         delete *pwriter;
490         *pwriter = 0;
491     }
492 }
493 
494 namespace cv
495 {
496 
IVideoCapture_create(int index)497 static Ptr<IVideoCapture> IVideoCapture_create(int index)
498 {
499     int  domains[] =
500     {
501 #ifdef HAVE_DSHOW
502         CV_CAP_DSHOW,
503 #endif
504 #ifdef HAVE_INTELPERC
505         CV_CAP_INTELPERC,
506 #endif
507 #ifdef WINRT_VIDEO
508         CAP_WINRT,
509 #endif
510 #ifdef HAVE_GPHOTO2
511         CV_CAP_GPHOTO2,
512 #endif
513         -1, -1
514     };
515 
516     // interpret preferred interface (0 = autodetect)
517     int pref = (index / 100) * 100;
518     if (pref)
519     {
520         domains[0]=pref;
521         index %= 100;
522         domains[1]=-1;
523     }
524 
525     // try every possibly installed camera API
526     for (int i = 0; domains[i] >= 0; i++)
527     {
528 #if defined(HAVE_DSHOW)        || \
529     defined(HAVE_INTELPERC)    || \
530     defined(WINRT_VIDEO)       || \
531     defined(HAVE_GPHOTO2)      || \
532     (0)
533         Ptr<IVideoCapture> capture;
534 
535         switch (domains[i])
536         {
537 #ifdef HAVE_DSHOW
538             case CV_CAP_DSHOW:
539                 capture = makePtr<VideoCapture_DShow>(index);
540                 break; // CV_CAP_DSHOW
541 #endif
542 #ifdef HAVE_INTELPERC
543             case CV_CAP_INTELPERC:
544                 capture = makePtr<VideoCapture_IntelPerC>();
545                 break; // CV_CAP_INTEL_PERC
546 #endif
547 #ifdef WINRT_VIDEO
548         case CAP_WINRT:
549             capture = Ptr<IVideoCapture>(new cv::VideoCapture_WinRT(index));
550             if (capture)
551                 return capture;
552             break; // CAP_WINRT
553 #endif
554 #ifdef HAVE_GPHOTO2
555             case CV_CAP_GPHOTO2:
556                 capture = createGPhoto2Capture(index);
557                 break;
558 #endif
559         }
560         if (capture && capture->isOpened())
561             return capture;
562 #endif
563     }
564 
565     // failed open a camera
566     return Ptr<IVideoCapture>();
567 }
568 
569 
IVideoCapture_create(const String & filename)570 static Ptr<IVideoCapture> IVideoCapture_create(const String& filename)
571 {
572     int  domains[] =
573     {
574         CV_CAP_ANY,
575 #ifdef HAVE_GPHOTO2
576         CV_CAP_GPHOTO2,
577 #endif
578         -1, -1
579     };
580 
581     // try every possibly installed camera API
582     for (int i = 0; domains[i] >= 0; i++)
583     {
584         Ptr<IVideoCapture> capture;
585 
586         switch (domains[i])
587         {
588         case CV_CAP_ANY:
589             capture = createMotionJpegCapture(filename);
590             break;
591 #ifdef HAVE_GPHOTO2
592         case CV_CAP_GPHOTO2:
593             capture = createGPhoto2Capture(filename);
594             break;
595 #endif
596         }
597 
598         if (capture && capture->isOpened())
599         {
600             return capture;
601         }
602     }
603     // failed open a camera
604     return Ptr<IVideoCapture>();
605 }
606 
IVideoWriter_create(const String & filename,int _fourcc,double fps,Size frameSize,bool isColor)607 static Ptr<IVideoWriter> IVideoWriter_create(const String& filename, int _fourcc, double fps, Size frameSize, bool isColor)
608 {
609     Ptr<IVideoWriter> iwriter;
610     if( _fourcc == CV_FOURCC('M', 'J', 'P', 'G') )
611         iwriter = createMotionJpegWriter(filename, fps, frameSize, isColor);
612     return iwriter;
613 }
614 
VideoCapture()615 VideoCapture::VideoCapture()
616 {}
617 
VideoCapture(const String & filename)618 VideoCapture::VideoCapture(const String& filename)
619 {
620     open(filename);
621 }
622 
VideoCapture(int device)623 VideoCapture::VideoCapture(int device)
624 {
625     open(device);
626 }
627 
~VideoCapture()628 VideoCapture::~VideoCapture()
629 {
630     icap.release();
631     cap.release();
632 }
633 
open(const String & filename)634 bool VideoCapture::open(const String& filename)
635 {
636     if (isOpened()) release();
637     icap = IVideoCapture_create(filename);
638     if (!icap.empty())
639         return true;
640 
641     cap.reset(cvCreateFileCapture(filename.c_str()));
642     return isOpened();
643 }
644 
open(int device)645 bool VideoCapture::open(int device)
646 {
647     if (isOpened()) release();
648     icap = IVideoCapture_create(device);
649     if (!icap.empty())
650         return true;
651     cap.reset(cvCreateCameraCapture(device));
652     return isOpened();
653 }
654 
isOpened() const655 bool VideoCapture::isOpened() const
656 {
657     return (!cap.empty() || !icap.empty());
658 }
659 
release()660 void VideoCapture::release()
661 {
662     icap.release();
663     cap.release();
664 }
665 
grab()666 bool VideoCapture::grab()
667 {
668     if (!icap.empty())
669         return icap->grabFrame();
670     return cvGrabFrame(cap) != 0;
671 }
672 
retrieve(OutputArray image,int channel)673 bool VideoCapture::retrieve(OutputArray image, int channel)
674 {
675     if (!icap.empty())
676         return icap->retrieveFrame(channel, image);
677 
678     IplImage* _img = cvRetrieveFrame(cap, channel);
679     if( !_img )
680     {
681         image.release();
682         return false;
683     }
684     if(_img->origin == IPL_ORIGIN_TL)
685         cv::cvarrToMat(_img).copyTo(image);
686     else
687     {
688         Mat temp = cv::cvarrToMat(_img);
689         flip(temp, image, 0);
690     }
691     return true;
692 }
693 
read(OutputArray image)694 bool VideoCapture::read(OutputArray image)
695 {
696     if(grab())
697         retrieve(image);
698     else
699         image.release();
700     return !image.empty();
701 }
702 
operator >>(Mat & image)703 VideoCapture& VideoCapture::operator >> (Mat& image)
704 {
705 #ifdef WINRT_VIDEO
706     if (grab())
707     {
708         if (retrieve(image))
709         {
710             std::lock_guard<std::mutex> lock(VideoioBridge::getInstance().inputBufferMutex);
711             VideoioBridge& bridge = VideoioBridge::getInstance();
712 
713             // double buffering
714             bridge.swapInputBuffers();
715             auto p = bridge.frontInputPtr;
716 
717             bridge.bIsFrameNew = false;
718 
719             // needed here because setting Mat 'image' is not allowed by OutputArray in read()
720             Mat m(bridge.getHeight(), bridge.getWidth(), CV_8UC3, p);
721             image = m;
722         }
723     }
724 #else
725     read(image);
726 #endif
727 
728     return *this;
729 }
730 
operator >>(UMat & image)731 VideoCapture& VideoCapture::operator >> (UMat& image)
732 {
733     read(image);
734     return *this;
735 }
736 
set(int propId,double value)737 bool VideoCapture::set(int propId, double value)
738 {
739     if (!icap.empty())
740         return icap->setProperty(propId, value);
741     return cvSetCaptureProperty(cap, propId, value) != 0;
742 }
743 
get(int propId) const744 double VideoCapture::get(int propId) const
745 {
746     if (!icap.empty())
747         return icap->getProperty(propId);
748     return icvGetCaptureProperty(cap, propId);
749 }
750 
751 
VideoWriter()752 VideoWriter::VideoWriter()
753 {}
754 
VideoWriter(const String & filename,int _fourcc,double fps,Size frameSize,bool isColor)755 VideoWriter::VideoWriter(const String& filename, int _fourcc, double fps, Size frameSize, bool isColor)
756 {
757     open(filename, _fourcc, fps, frameSize, isColor);
758 }
759 
release()760 void VideoWriter::release()
761 {
762     iwriter.release();
763     writer.release();
764 }
765 
~VideoWriter()766 VideoWriter::~VideoWriter()
767 {
768     release();
769 }
770 
open(const String & filename,int _fourcc,double fps,Size frameSize,bool isColor)771 bool VideoWriter::open(const String& filename, int _fourcc, double fps, Size frameSize, bool isColor)
772 {
773     if (isOpened()) release();
774     iwriter = IVideoWriter_create(filename, _fourcc, fps, frameSize, isColor);
775     if (!iwriter.empty())
776         return true;
777     writer.reset(cvCreateVideoWriter(filename.c_str(), _fourcc, fps, frameSize, isColor));
778     return isOpened();
779 }
780 
isOpened() const781 bool VideoWriter::isOpened() const
782 {
783     return !iwriter.empty() || !writer.empty();
784 }
785 
786 
set(int propId,double value)787 bool VideoWriter::set(int propId, double value)
788 {
789     if (!iwriter.empty())
790         return iwriter->setProperty(propId, value);
791     return false;
792 }
793 
get(int propId) const794 double VideoWriter::get(int propId) const
795 {
796     if (!iwriter.empty())
797         return iwriter->getProperty(propId);
798     return 0.;
799 }
800 
write(const Mat & image)801 void VideoWriter::write(const Mat& image)
802 {
803     if( iwriter )
804         iwriter->write(image);
805     else
806     {
807         IplImage _img = image;
808         cvWriteFrame(writer, &_img);
809     }
810 }
811 
operator <<(const Mat & image)812 VideoWriter& VideoWriter::operator << (const Mat& image)
813 {
814     write(image);
815     return *this;
816 }
817 
fourcc(char c1,char c2,char c3,char c4)818 int VideoWriter::fourcc(char c1, char c2, char c3, char c4)
819 {
820     return (c1 & 255) + ((c2 & 255) << 8) + ((c3 & 255) << 16) + ((c4 & 255) << 24);
821 }
822 
823 }
824