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Open Source Computer Vision Library
https://opencv.org/
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53 lines
1.2 KiB
53 lines
1.2 KiB
#! /usr/bin/env python |
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""" |
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This script will test highgui's cvRetrieveFrame function |
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""" |
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# name of this test and it's requirements |
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TESTNAME = "cvRetrieveFrame" |
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REQUIRED = ["cvGrabFrame"] |
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# needed for sys.exit(int) and .works file handling |
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import os |
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import sys |
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import works |
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# path to imagefiles we need |
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PREFIX=os.path.join(os.environ["srcdir"],"../../opencv_extra/testdata/python/videos/") |
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# check requirements and delete old flag file, if it exists |
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if not works.check_files(REQUIRED,TESTNAME): |
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sys.exit(77) |
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# import the necessary things for OpenCV |
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from highgui import * |
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from cv import * |
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# create a video reader using the tiny video 'uncompressed.avi' |
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video = cvCreateFileCapture(PREFIX+"uncompressed.avi") |
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# call cvGrabFrame to grab a frame from video |
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res=cvGrabFrame(video) |
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if res==0: |
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print "(ERROR) Couldn't call cvGrabFrame()" |
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sys.exit(1) |
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# call cvRetrieveFrame and check if returned image is valid |
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image = cvRetrieveFrame(video) |
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if image is None: |
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# returned image is not a correct IplImage (pointer), |
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# so return an error code |
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sys.exit(1) |
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# ATTENTION: We do not release the video reader or image. |
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# This is bad manners, but Python and OpenCV don't care... |
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# create flag file for sollowing tests |
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works.set_file(TESTNAME) |
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# return 0 ('PASS') |
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sys.exit(0)
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