Bitmap/PPM conversion through a pipe: Difference between revisions
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# Write to "img.jpg" through a pipe |
# Write to "img.jpg" through a pipe |
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(ppmWrite *Ppm '("convert" "-" "img.jpg"))</lang> |
(ppmWrite *Ppm '("convert" "-" "img.jpg"))</lang> |
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=={{header|Racket}}== |
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<lang racket> |
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(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)</lang> |
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=={{header|Ruby}}== |
=={{header|Ruby}}== |
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