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[108] | 1 | // capture.c - by Robin Hewitt, 2007 |
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| 2 | // http://www.cognotics.com/opencv/downloads/camshift_wrapper |
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| 3 | // This is free software. See License.txt, in the download |
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| 4 | // package, for details. |
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| 5 | // |
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| 6 | |
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| 7 | |
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| 8 | #include <stdio.h> |
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| 9 | #include "cv.h" |
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| 10 | #include "highgui.h" |
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| 11 | #include "capture.h" |
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| 12 | |
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| 13 | |
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| 14 | // File-level variables |
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| 15 | CvCapture * pCapture = 0; |
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| 16 | |
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| 17 | ////////////////////////////////// |
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| 18 | // initCapture() |
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| 19 | // |
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| 20 | int initCapture() |
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| 21 | { |
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| 22 | // Initialize video capture |
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| 23 | pCapture = cvCaptureFromCAM( CV_CAP_ANY ); |
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| 24 | if( !pCapture ) |
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| 25 | { |
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| 26 | fprintf(stderr, "failed to initialize video capture\n"); |
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| 27 | return 0; |
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| 28 | } |
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| 29 | |
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| 30 | return 1; |
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| 31 | } |
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| 32 | |
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| 33 | |
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| 34 | ////////////////////////////////// |
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| 35 | // closeCapture() |
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| 36 | // |
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| 37 | void closeCapture() |
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| 38 | { |
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| 39 | // Terminate video capture and free capture resources |
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| 40 | cvReleaseCapture( &pCapture ); |
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| 41 | return; |
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| 42 | } |
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| 43 | |
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| 44 | |
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| 45 | ////////////////////////////////// |
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| 46 | // nextVideoFrame() |
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| 47 | // |
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| 48 | IplImage * nextVideoFrame() |
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| 49 | { |
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| 50 | IplImage * pVideoFrame = cvQueryFrame( pCapture ); |
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| 51 | if( !pVideoFrame ) |
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| 52 | fprintf(stderr, "failed to get a video frame\n"); |
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| 53 | |
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| 54 | return pVideoFrame; |
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| 55 | } |
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| 56 | |
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