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https://github.com/cookiengineer/audacity
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Fix for bug 661
Introduce *DECIMAL-SEPARATOR* global for Nyquist. Improvements to numeric validation error messages. Fix *TRACK* START-TIME and END-TIME properties for tracks with different length channels. Update Adjustable Fade, Regular Interval Labels and Vocal Removal to use numeric text inputs. This does NOT fix bug 1020.
This commit is contained in:
Steve Daulton
@@ -1,153 +1,138 @@
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;nyquist plug-in
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;version 3
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;version 4
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;type analyze
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;name "Regular Interval Labels..."
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;action "Adding equally-spaced labels to the label track..."
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;author "David R. Sky"
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;author "Steve Daulton"
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;copyright "Released under terms of the GNU General Public License version 2"
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;; by David R. Sky (http://www.garyallendj.com/davidsky/), June-October 2007.
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;; Code for label placement based on silencemarker.ny by Alex S.Brown.
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;; Updated by Steve Daulton (http://easyspacepro.com)
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;; Released under terms of the GNU General Public License version 2:
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;; http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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;;
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;; Original version by David R. Sky (http://www.garyallendj.com/davidsky/) 2007.
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;; Based on an idea by Sami Jumppanen, with contributions from
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;; Alex S.Brown, Dominic Mazzoni, Pierre M.I., Gale Andrews, Steve Daulton.
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;; This version by Steve Daulton (http://easyspacepro.com) 2016
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;; Released under terms of the GNU General Public License version 2
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;; http://www.gnu.org/licenses/old-licenses/gpl-2.0.html .
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;; Thanks Sami Jumppanen for plug-in suggestion.
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;; Thanks Dominic Mazzoni, Pierre M.I., Gale Andrews
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;; for improvement suggestions.
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;; Disallow labels before zero by Steve Daulton, September 2010.
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;; Enhanced label numbering by Steve Daulton, April 17th 2011.
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;; Error checking by Steve Daulton, April 18th 2011.
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;; Final Label bug fixed and minor GUI modifications. SD Apr 2011
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;; Requires Audacity 1.3.4 or later.
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;control start "Time to place first label [seconds]" string " " "0.0"
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;control placement "Label placement method" choice "Label interval,Number of labels" 0
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;control time "Set either: Label interval [seconds]" string " " "60.0"
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;control label-number "Or: Number of labels" int "" 10 2 100
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;control text "Label text" string "" "Label"
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;control labelnum "Minimum number of digits in label" choice "None - text only,1 (before label),2 (before label),3 (before label),1 (after label),2 (after label),3 (after label)" 2
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;control countfrom "Begin numbering from" int "" 1 0 100
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;control include "Add final label" choice "No,Yes" 0
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;control t-choice "Adjust label interval to fit length" choice "No,Yes" 1
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; function to convert string to list
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(defun string-to-list (str)
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(read (make-string-input-stream (format nil "(~a)" str))))
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;control mode "Use 'Number of labels' OR 'Label interval'" choice "Number of Labels,Label Interval" 0
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;control number "Number of labels" int-text "" 10 1 1000
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;control interval "Label interval (seconds)" float-text "" 60 0.001 1000
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;control adjust "Adjust label interval to fit length" choice "No,Yes" 0
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;control labeltext "Label text" string "" "Label" ""
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;control zeros "Minimum number of digits in label" choice "None - text only,1 (before label),2 (before label),3 (before label),1 (after label),2 (after label),3 (after label)" 2
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;control labelnum "Begin numbering from" int-text "" 1 0 nil
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; function to calculate new time value
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; if user value does not create equal duration final audio chunk
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; returns new time value
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(defun new-time (time dur check-labels)
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; calculate duration of last audio chunk
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(setf last-label (- dur (* time check-labels)))
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(if (< last-label (* time 0.5)) ; last chunk is less than 1/2 time
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(/ dur (- check-labels 1))
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(/ dur check-labels)))
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(defun make-labels ()
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(when (and (= mode 1)(= adjust 1)) ;adjust interval to fit
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(setf interval (get-interval)))
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(validate)
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(let ((labels ()))
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(cond
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((= mode 0) ;number of labels
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(setf interval (/ (get-duration 1) number))
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(do* ((i 0 (1+ i))
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(labelnum labelnum (1+ labelnum)))
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((= i number))
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(push (make-label (* i interval) labelnum) labels))
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;print what we've done to debug window
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(if (= number 1)
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(format t "1 label requested.")
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(format t "~a labels at intervals of ~a seconds."
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number interval)))
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(t
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(setf counter 0)
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(do* ((i 0 (1+ i))
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(labelnum labelnum (1+ labelnum))
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(time 0 (* i interval)))
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((>= (round-to-sample time) (get-duration 1)))
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(incf counter)
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(push (make-label time labelnum) labels))
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;print what we've done to debug window
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(if (and (= adjust 0)(/= (* counter interval)(get-duration 1)))
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(if (= counter 1)
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(format t "1 label requested.")
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(format t "~a labels at regular intervals of ~a seconds.~%~
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Final label at ~a seconds from end of selection."
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counter
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interval
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(- (get-duration 1) (* (1- counter) interval))))
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(format t "~a labels at regular intervals of ~a seconds."
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counter interval))))
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;return labels
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labels))
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(defun validate ()
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(when (= mode 1) ;Label interval
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(when (> (get-duration 1) (round-to-sample (* 1000 interval)))
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(throw 'err
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(format nil "Too many labels.~%~%~
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Selection length is ~a seconds and~%~
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Label interval is ~a seconds~%~
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giving a total of ~a labels.~%~
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Maximum number of labels from this effect is 1000.~%~
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Please use a shorter selection, or a longer Label interval."
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(trim-trailing-zeros (get-duration 1))
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(trim-trailing-zeros interval)
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(if (= adjust 1)
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(round (/ (get-duration 1) interval))
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(1+ (round (/ (get-duration 1) interval)))))))))
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(defun round-to-sample (time)
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"Round time in seconds to nearest sample period."
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(let ((samples (round (* time *sound-srate*))))
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(/ samples *sound-srate*)))
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(defun make-label (time num)
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"Make a single label"
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(let* ((num-text (format nil "~a" num))
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(non-zero-digits (length num-text)))
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(if (= zeros 0)
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(setf num-text "")
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(dotimes (i (max 0 (- zeros non-zero-digits)))
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(setf num-text (format nil "~a~a" "0" num-text))))
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(if num-before-text
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(setf text (format nil "~a~a" num-text labeltext))
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(setf text (format nil "~a~a" labeltext num-text)))
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(list time text)))
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(defun get-interval ()
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"Get adjusted interval to fit duration"
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(let* ((min-num (truncate (/ (get-duration 1) interval)))
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(max-num (1+ min-num)))
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(if (and (> min-num 0)
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(< (abs (- interval (/ (get-duration 1) min-num)))
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(abs (- interval (/ (get-duration 1) max-num)))))
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(/ (get-duration 1) min-num)
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(/ (get-duration 1) max-num))))
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(defun lasttrackp ()
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"true when processing the final selected track"
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(let ((index (get '*track* 'index))
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(num (length (get '*selection* 'tracks))))
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(= index num)))
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(defun trim-trailing-zeros (num)
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;; sometimes need more precission than "%g".
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(cond
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((/= num (truncate num)) ; not integer
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(setf *float-format* "%.5f")
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(let ((numtxt (format nil "~a" num)))
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(do* ((i (1- (length numtxt)) (1- i))
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(ch (char numtxt i)(char numtxt i)))
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((char/= ch #\0))
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(setf numtxt (subseq numtxt 0 i)))
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(setf *float-format* "%g")
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numtxt))
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(t num)))
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; function to add labels to the label track
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; from silencemarker.ny by Alex S. Brown
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(defun add-label (l-time l-text)
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(setq label-list (cons (list l-time l-text) label-list)))
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(setf num-before-text (<= zeros 3))
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(setf zeros (1+ (rem (1- zeros) 3)))
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; function to add label number
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(defun add-number (i text)
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(let* ((num (+ countfrom i))
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(appendt (if (> labelnum 3) t nil))
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(labelnum (if (> labelnum 3)(- labelnum 3) labelnum))
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(sign (if (< num 0) "-" ""))
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(num (abs num))
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(zeros (case (- labelnum (length (format nil "~a" num)))
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(1 "0")
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(2 "00")
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(t ""))))
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(if appendt
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(format nil "~a~a~a~a" text sign zeros num) ;append number to text
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(format nil "~a~a~a~a" sign zeros num text)))) ;prepend number
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; function to calculate 'time' based on number of labels
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(defun num-of-label-time ()
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(setf time (/ dur label-number)); set label interval
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(if (= include 0)
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(setf labels label-number)
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(setf labels (1+ label-number))))
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; function to calculate 'time' based on user-selected time interval
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; calculate number of labels in selection
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; this includes label at start of selection
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; which is label number 0 if numbers are prepended to label text
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; if final label is unwanted, decrement number of labels by 1
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(defun user-selected-time ()
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(setf labels (if (= include 0)
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(truncate (/ dur time))
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(+ 1 (truncate (/ dur time)))))
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; setf check-labels: number of labels if user includes last label
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(setf check-labels (+ 1 (truncate (/ dur time))))
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; depending whether user wants specified time used
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; or wants equal duration audio chunks including last chunk
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; user time may create equal audio chunks even for last chunk
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(setf time
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(if (= t-choice 0) ; final segment need not be equal
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time ; use user time value...
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; ...otherwise calculate time for equal duration audio chunks
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; if user time value creates equal final audio segment duration anyway
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; then use user interval
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(if (= dur (* time (- check-labels 1)))
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time
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; user time value does not create equal duration audio chunks
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(new-time time dur check-labels)))))
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;; ERROR CHECKING AND INITIALISE VARIABLES
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(setq err ""); initialise error message
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(setq label-list nil); initialize blank label track
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(setq time (first (string-to-list time))); get Interval Label time from string
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(setq start (first (string-to-list start))); get 'start' from string
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; check 'start' is a valid number, then calculate and check 'dur(ation)'
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(if (not(numberp start)) ; check that it is a number
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(setq err (strcat err (format nil "'Time to place first label [seconds]' must be a number.~%~%")))
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(progn
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(setq start (max 0 start)) ;disallow negative label time
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(setf dur (- (get-duration 1) start)) ;calculate duration
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(if (<= dur 0)
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(setq err (strcat err (format nil
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"'Time to place first label' (~a seconds) is greater than selection length (~a seconds).~%~%"
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start (get-duration 1)))))))
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; If using 'Label Interval'
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(if (= placement 0)
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(if (not(numberp time)); check time is a number
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(setq err (strcat err (format nil "'Label interval [seconds]' must be a number.~%~%")))
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(if (<= time 0); Label interval must be positive
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(setq err (strcat err (format nil "'Label Interval [seconds]' must be a positive number.~%~%")))
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(if (and (> dur 0)(> time dur))
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(setq err (strcat err (format nil
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"Including your time offset of ~a seconds, your requested~%label interval of ~a seconds is greater than the duration~%of your selected audio (~a seconds). ~%~%"
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start time dur))))))
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;else using 'Number of labels'
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(if (<= label-number 0)
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(setq err (strcat err (format nil
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"Based on 'Number of labels' you have selected ~a labels.~%~%" label-number)))))
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;; MAIN PROGRAM
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(if (> (length err) 0) ; if errors
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(format nil "ERROR.~%~%~a" err) ; print error message(s)
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(progn ; otherwise run program
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(if (= placement 1) ; number of labels
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(num-of-label-time)
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(user-selected-time))
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; add the labels
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(dotimes (i labels)
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(if (> labelnum 0)
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(add-label (+ start (* i time)) (add-number i text))
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(add-label (+ start (* i time)) text)))
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; return label track
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label-list))
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;; Analyze plug-ins may return text message per track
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;; but we only want error messages once, and we only want
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;; one set of labels.
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(if (lasttrackp)
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(catch 'err (make-labels))
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nil)
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