Added jpeg conversions
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@ -11,6 +11,27 @@ def null(img, x, y):
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def mono2grey(img, x, y):
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return imageop.mono2grey(img, x, y, 0, 255)
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def grey2jpeggrey(img, x, y):
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import jpeg
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return jpeg.compress(img, x, y, 1)
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def rgb2jpeg(img, x, y):
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import jpeg
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return jpeg.compress(img, x, y, 4)
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def jpeggrey2grey(img, width, height):
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import jpeg
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data, width, height, bytesperpixel = jpeg.decompress(data)
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if bytesperpixel <> 1: raise RuntimeError, 'not grayscale jpeg'
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return data
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def jpeg2rgb(img, width, height):
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import cl, CL
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import jpeg
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data, width, height, bytesperpixel = jpeg.decompress(data)
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if bytesperpixel <> 4: raise RuntimeError, 'not rgb jpeg'
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return data
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converters = [ \
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('grey', 'grey4', imageop.grey2grey4, LOSSY), \
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('grey', 'grey2', imageop.dither2grey2, LOSSY), \
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@ -21,7 +42,11 @@ converters = [ \
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('rgb', 'rgb8', imageop.rgb2rgb8, LOSSY), \
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('rgb8', 'rgb', imageop.rgb82rgb, NOT_LOSSY), \
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('rgb', 'grey', imageop.rgb2grey, LOSSY), \
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('grey', 'rgb', imageop.grey2rgb, NOT_LOSSY) \
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('grey', 'rgb', imageop.grey2rgb, NOT_LOSSY), \
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('jpeggrey','grey',jpeggrey2grey, NOT_LOSSY), \
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('grey', 'jpeggrey',grey2jpeggrey, NOT_LOSSY), \
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('jpeg', 'rgb', jpeg2rgb, NOT_LOSSY), \
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('rgb', 'jpeg', rgb2jpeg, NOT_LOSSY), \
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]
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built = {}
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