mirror of
https://github.com/cookiengineer/audacity
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91 lines
2.6 KiB
Common Lisp
91 lines
2.6 KiB
Common Lisp
;; system.lsp -- system-dependent lisp code
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; local definition for play
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; this one is for Linux:
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(if (not (boundp '*default-sf-format*))
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(setf *default-sf-format* snd-head-wave))
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(if (not (boundp '*default-sound-file*))
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(compute-default-sound-file))
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(if (not (boundp '*default-sf-dir*))
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(setf *default-sf-dir* "./"))
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(if (not (boundp '*default-sf-mode*))
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(setf *default-sf-mode* snd-mode-pcm))
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(if (not (boundp '*default-sf-bits*))
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(setf *default-sf-bits* 16))
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(if (not (boundp '*default-plot-file*))
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(setf *default-plot-file* (strcat (get-user) "-points.dat")))
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; FULL-NAME-P -- test if file name is a full path or relative path
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;
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; (otherwise the *default-sf-dir* will be prepended
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;
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(defun full-name-p (filename)
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(or (eq (char filename 0) #\/)
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(eq (char filename 0) #\.)))
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; RELATIVE-PATH-P -- test if filename or path is a relative path
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;
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(defun relative-path-p (filename)
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(not (eq (char filename 0) #\/)))
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(setf *file-separator* #\/)
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;; PLAY-FILE - play a sound file
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;;
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(defun play-file (name)
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;;
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;; WARNING: if you invoke an external program to play files,
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;; but Nyquist uses internal (portaudio) interface to
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;; play synthesized sound, Nyquist may fail to open the
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;; sound device while it is playing a sound file and then
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;; refuse to play anything. -RBD dec05
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;; (system (strcat "sndplay " (soundfilename name))))
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;; (system (strcat "play " (soundfilename name) )))
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;;
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(play (s-read (soundfilename name))))
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;; R - replay last file written with PLAY
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(defun r () (play-file *default-sound-file*))
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;;;; use this old version if you want to use sndplay to play
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;;;; the result file rather than play the samples as they
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;;;; are computed. This version does not autonormalize.
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;; PLAY - write value of an expression to file and play it
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;;
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;(defmacro play (expr)
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; `(prog (specs)
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; (setf specs (s-save (force-srate *sound-srate* ,expr)
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; 1000000000 *default-sound-file*))
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; (r)))
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;;;;
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; local definition for play
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(defmacro play (expr)
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`(s-save-autonorm ,expr NY:ALL *default-sound-file* :play *soundenable*))
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;; for Linux, modify s-plot (defined in nyquist.lsp) by saving s-plot
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;; in standard-s-plot, then call gnuplot to display the points.
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;;
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;; we also need to save the location of this file so we can find
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;; nyquist-plot.txt, the command file for gnuplot
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;;
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(setf *runtime-path* (current-path))
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(display "system.lsp" *runtime-path*)
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(setfn standard-s-plot s-plot)
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(defun s-plot (s &optional (n 1000) (dur 2.0))
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(let (plot-file)
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(standard-s-plot s n dur) ;; this calculates the data points
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(setf plot-file (strcat *runtime-path* "nyquist-plot.txt"))
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(system (strcat "gnuplot -persist " plot-file))))
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