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;;;; w w w - s n d . s t k -- WWW for STk (Sound files reader)
;;;; Copyright © 1996-1999 Erick Gallesio - I3S-CNRS/ESSI <>
;;;; Permission to use, copy, modify, distribute,and license this
;;;; software and its documentation for any purpose is hereby granted,
;;;; provided that existing copyright notices are retained in all
;;;; copies and that this notice is included verbatim in any
;;;; distributions. No written agreement, license, or royalty fee is
;;;; required for any of the authorized uses.
;;;; This software is provided ``AS IS'' without express or implied
;;;; warranty.
;;;; This version uses some of the enhancements done by Harvey J. Stein:
;;;; Copyright (c) 1995 Harvey J. Stein (
;;;; Author: Erick Gallesio []
;;;; Creation date: 1-Nov-1996 23:39
;;;; Last file update: 3-Sep-1999 19:57 (eg)
;;;; Sound player must be placed in the shell variable PLAY_PRG. If this
;;;; variable is not set, the program "play" is launched. The play program
;;;; is called with one parameter: the file to play.
(select-module WWW)
(define sound-player (or (getenv "PLAY_PRG") "play"))
; U t i l i t i e s
(define (get-sound-file url port)
;; Keep the suffix of the sound file, since some players need it
(let* ((str-url (url:pretty-url url))
(tmpname (temporary-file-name))
(file (open-file tmpname "w")))
(when file
(copy-port-image port file)
(close-output-port file))
; P l a y - s o u n d
(define (play-sound txt fd url)
(let* ((str-url (if (string? url) url (url:unparse-url url)))
(in-file? (eq? (url:service url) 'file))
(sound (if in-file?
(url:filename url)
(get-sound-file url fd))))
(when sound
;; play sound file
(system (string-append sound-player " " sound))
;; If sound is in a temporary file, delete it
(unless in-file?
(remove-file sound)))))
;;;; Add the sound "viewer"
(www:add-viewer (string->regexp "\\.au$|\\.wav$") play-sound)
(provide "www-snd")