72 lines
2.5 KiB
Plaintext
72 lines
2.5 KiB
Plaintext
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;;;;
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;;;; w w w - s n d . s t k -- WWW for STk (Sound files reader)
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;;;;
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;;;; Copyright <20> 1996-1998 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
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;;;;
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;;;; Permission to use, copy, and/or distribute this software and its
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;;;; documentation for any purpose and without fee is hereby granted, provided
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;;;; that both the above copyright notice and this permission notice appear in
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;;;; all copies and derived works. Fees for distribution or use of this
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;;;; software or derived works may only be charged with express written
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;;;; permission of the copyright holder.
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;;;; This software is provided ``as is'' without express or implied warranty.
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;;;;
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;;;; This version uses some of the enhancements done by Harvey J. Stein:
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;;;; Copyright (c) 1995 Harvey J. Stein (hjstein@math.huji.ac.il)
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;;;;
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;;;; Author: Erick Gallesio [eg@unice.fr]
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;;;; Creation date: 1-Nov-1996 23:39
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;;;; Last file update: 28-Feb-1998 13:53
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;;;;
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;;;; Sound player must be placed in the shell variable PLAY_PRG. If this
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;;;; variable is not set, the program "play" is launched. The play program
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;;;; is called with one parameter: the file to play.
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(select-module WWW)
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(define sound-player (or (getenv "PLAY_PRG") "play"))
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;=============================================================================
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;
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; U t i l i t i e s
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;
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;=============================================================================
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(define (get-sound-file url port)
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;; Keep the suffix of the sound file, since some players need it
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(let* ((str-url (url:pretty-url url))
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(tmpname (temporary-file-name))
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(file (open-file tmpname "w")))
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(when file
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(copy-port-image port file)
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(close-output-port file))
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tmpname))
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;=============================================================================
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;
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; P l a y - s o u n d
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;
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;=============================================================================
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(define (play-sound txt fd url)
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(let* ((str-url (if (string? url) url (url:unparse-url url)))
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(in-file? (eq? (url:service url) 'file))
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(sound (if in-file?
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(url:filename url)
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(get-sound-file url fd))))
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(when sound
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;; play sound file
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(system (string-append sound-player " " sound))
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;; If sound is in a temporary file, delete it
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(unless in-file?
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(remove-file sound)))))
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;=============================================================================
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;;;; Add the sound "viewer"
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(www:add-viewer (string->regexp "\\.au$|\\.wav$") play-sound)
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(provide "www-snd")
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