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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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