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PC World 2006 February
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Nyquist
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system.lsp
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Lisp/Scheme
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2003-07-01
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4KB
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118 lines
; system.lsp -- machine/system-dependent definitions
;; default behavior is to call SETUP-CONSOLE to get large white typescript
;;
;; set *setup-console* to nil in your personal init.lsp to override this behavior
;; (this may be necessary to work with emacs)
;;
(if (not (boundp '*setup-console*)) (setf *setup-console* t))
(if *setup-console* (setup-console))
(setf ny:bigendianp nil)
(if (not (boundp '*default-sf-format*))
(setf *default-sf-format* snd-head-Wave))
;(if (not (boundp '*default-sound-file*))
; (setf *default-sound-file* "temp.wav"))
;(if (not (boundp '*default-sf-dir*))
; (setf *default-sf-dir* ""))
(if (not (boundp '*default-sf-mode*))
(setf *default-sf-mode* snd-head-mode-pcm))
(if (not (boundp '*default-sf-bits*))
(setf *default-sf-bits* 16))
;(if (not (boundp '*default-plot-file*))
; (setf *default-plot-file* "points.dat"))
;(if (not (boundp '*plotscript-file*))
; (setf *plotscript-file* "sys/unix/rs6k/plotscript"))
; local definition for play
;(defmacro play (expr)
; `(s-save-autonorm ,expr NY:ALL *default-sound-file* :play *soundenable*))
;(defun r ()
; (s-save (s-read *default-sound-file*) NY:ALL "" :play t)
;)
; PLAY-FILE -- play a file
;(defun play-file (name)
; (s-save (s-read name) NY:ALL "" :play t))
; FULL-NAME-P -- test if file name is a full path or relative path
;
; (otherwise the *default-sf-dir* will be prepended
;
(defun full-name-p (filename)
(or (eq (char filename 0) #\\)
(eq (char filename 0) #\.)
(and (> (length filename) 2)
(both-case-p (char filename 0))
(equal (char filename 1) #\:))))
(setf *file-separator* #\\)
;(defun ny:load-file () (load "*.*"))
;(defun ny:reload-file () (load "*"))
; save the standard function to write points to a file
;
;(setfn s-plot-points s-plot)
;(defun array-max-abs (points)
; (let ((m 0.0))
; (dotimes (i (length points))
; (setf m (max m (abs (aref points i)))))
; m))
;(setf graph-width 600)
;(setf graph-height 220)
;(defun s-plot (snd &optional (n 600))
; (show-graphics)
; (clear-graphics)
; (cond ((soundp snd)
; (s-plot-2 snd n (/ graph-height 2) graph-height))
; (t
; (let ((gh (/ graph-height (length snd)))
; hs)
; (dotimes (i (length snd))
; (setf hs (s-plot-2 (aref snd i) n (+ (/ gh 2) (* i gh)) gh hs)))))))
;
;
;(defun s-plot-2 (snd n y-offset graph-height horizontal-scale)
; (prog ((points (snd-samples snd n))
; maxpoint horizontal-scale vertical-scale)
; (setf maxpoint (array-max-abs points))
; (moveto 0 y-offset)
; (lineto graph-width y-offset)
; (moveto 0 y-offset)
; (cond ((null horizontal-scale)
; (setf horizontal-scale (/ (float graph-width) (length points)))))
; (setf vertical-scale (- (/ (float graph-height) 2 maxpoint)))
; (dotimes (i (length points))
; (lineto (truncate (* horizontal-scale i))
; (+ y-offset (truncate (* vertical-scale (aref points i))))))
; (format t "X Axis: ~A to ~A (seconds)\n" (snd-t0 snd) (/ (length points) (snd-srate snd)))
; (format t "Y Axis: ~A to ~A\n" (- maxpoint) maxpoint)
; (format t "~A samples plotted.\n" (length points))
; (return horizontal-scale)
; ))
;
; S-EDIT - run the audio editor on a sound
;
;(defmacro s-edit (&optional expr)
; `(prog ()
; (if ,expr (s-save ,expr 1000000000 *default-sound-file*))
; (system (format nil "audio_editor ~A &"
; (soundfilename *default-sound-file*)))))