diff options
Diffstat (limited to 'Lib')
| -rwxr-xr-x | Lib/test/test_imageop.py | 82 |
1 files changed, 58 insertions, 24 deletions
diff --git a/Lib/test/test_imageop.py b/Lib/test/test_imageop.py index 54bae1a..327726d 100755 --- a/Lib/test/test_imageop.py +++ b/Lib/test/test_imageop.py @@ -7,10 +7,13 @@ from test_support import verbose import imageop -def main(): - - image, width, height = getimage('test.rgb') +def main(use_rgbimg=1): + if use_rgbimg: + image, width, height = getrgbimage('test.rgb') + else: + image, width, height = getimage('test.rgb') + # Return the selected part of image, which should by width by height # in size and consist of pixels of psize bytes. if verbose: @@ -32,17 +35,25 @@ def main(): if verbose: print 'tovideo' videoimage = imageop.tovideo (image, 4, width, height) + + # Convert an rgb image to an 8 bit rgb (greyscale) + if verbose: + print 'rgb2rgb8' + greyimage = imageop.rgb2rgb8(image, width, height) + + # Convert an 8 bit rgb image to a 24 bit rgb image + if verbose: + print 'rgb82rgb' + image = imageop.rgb82rgb(greyimage, width, height) - image, width, height = getimage('greytest.rgb') # Convert a 8-bit deep greyscale image to a 1-bit deep image by # tresholding all the pixels. The resulting image is tightly packed # and is probably only useful as an argument to mono2grey. if verbose: print 'grey2mono' - monoimage = imageop.grey2mono (image, width, height, 0) - - #monoimage, width, height = getimage('monotest.rgb') + monoimage = imageop.grey2mono (greyimage, width, height, 0) + # monoimage, width, height = getimage('monotest.rgb') # Convert a 1-bit monochrome image to an 8 bit greyscale or color image. # All pixels that are zero-valued on input get value p0 on output and # all one-value input pixels get value p1 on output. To convert a @@ -58,7 +69,6 @@ def main(): print 'dither2mono' monoimage = imageop.dither2mono (greyimage, width, height) - # Convert an 8-bit greyscale image to a 4-bit greyscale image without # dithering. if verbose: @@ -88,34 +98,58 @@ def main(): print 'grey22grey' image = imageop.grey22grey (grey2image, width, height) +def getrgbimage(name): + """return a tuple consisting of image (in 'imgfile' format but + using rgbimg instead) width and height""" + + import rgbimg + + try: + sizes = rgbimg.sizeofimage(name) + except rgbimg.error: + name = get_qualified_path(name) + sizes = rgbimg.sizeofimage(name) + if verbose: + print 'rgbimg opening test image: %s, sizes: %s' % (name, str(sizes)) + + image = rgbimg.longimagedata(name) + return (image, sizes[0], sizes[1]) + def getimage(name): """return a tuple consisting of image (in 'imgfile' format) width and height """ - import sys - import os import imgfile - import string - - # try opening the name directly + try: sizes = imgfile.getsizes(name) except imgfile.error: - # get a more qualified path component of the script... - if __name__ == '__main__': - ourname = sys.argv[0] - else: # ...or the full path of the module - ourname = sys.modules[__name__].__file__ - - parts = string.splitfields(ourname, os.sep) - parts[-1] = name - name = string.joinfields(parts, os.sep) + name = get_qualified_path(name) sizes = imgfile.getsizes(name) if verbose: - print 'Opening test image: %s, sizes: %s' % (name, str(sizes)) + print 'imgfile opening test image: %s, sizes: %s' % (name, str(sizes)) image = imgfile.read(name) return (image, sizes[0], sizes[1]) -main() +def get_qualified_path(name): + """ return a more qualified path to name contructed from argv[1]""" + import sys + import os + import string + + # get a more qualified path component of the script... + if __name__ == '__main__': + ourname = sys.argv[0] + else: # ...or the full path of the module + ourname = sys.modules[__name__].__file__ + + parts = string.splitfields(ourname, os.sep) + parts[-1] = name + name = string.joinfields(parts, os.sep) + return name + +# rgbimg (unlike imgfile) is portable to platforms other than SGI. So we prefer to use it. +main(use_rgbimg=1) + |