9 lines
301 B
Racket
9 lines
301 B
Racket
(define (ppm->jpeg bitmap [jpg-file "output"] [quality 75])
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(define command (format "convert ppm:- -quality ~a jpg:~a.jpg" quality jpg-file))
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(match-define (list in out pid err ctrl) (process command))
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(bitmap->ppm bitmap out)
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(close-input-port in)
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(close-output-port out))
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(ppm->jpeg bm)
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