/usr/share/snd/snd14.scm is in snd 18.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 | (define trap-segfault
(dilambda
(lambda () #f)
(lambda (val) val)))
(define* (if-cursor-follows-play-it-stays-where-play-stopped (enable #t))
(set! *with-tracking-cursor* (and enable :track-and-stay)))
(define* (find-channel func (beg 0) snd chn edpos)
(scan-channel func beg #f snd chn edpos))
(define scan-chan scan-channel)
(define* (map-chan proc beg end origin snd chn edpos)
(map-channel proc beg (- (+ end 1) beg) snd chn edpos origin))
(define smooth-vct smooth-float-vector)
(define vct-polynomial float-vector-polynomial)
(define mix->vct mix->float-vector)
(define pan-mix-vct pan-mix-float-vector)
(define vct-size float-vector-size)
#|
;;; -------- sound segmentation
;;;
;;; this code was used to return note on and off points for the Iowa Musical Instrument Sound library
;;; the main function takes the top level directory of the sounds, and returns (eventually) a text
;;; file containing the start times (in samples) and durations of all the notes (each sound file in
;;; this library can have about 12 notes). The results of this function need to be fixed up by hand
;;; in some cases (violin notes in particular).
;;; this code needs closedir, readdir and opendir (Guile-isms, I think)
(define* (sounds->segment-data main-dir (output-file "sounds.data"))
(define (lower-case-and-no-spaces name)
(let* ((new-name (string-downcase name))
(len (length new-name)))
(do ((i 0 (+ i 1)))
((= i len) new-name)
(if (char=? (new-name i) #\space)
(set! (new-name i) #\-)))))
(define (directory->list dir)
(let ((dport (opendir dir))
(ctr 0)) ; try to avoid infinite loop in the broken cases
(let loop ((entry (readdir dport))
(files ()))
(set! ctr (+ ctr 1))
(if (and (< ctr 2000)
(not (eof-object? entry)))
(loop (readdir dport) (cons entry files))
(begin
(closedir dport)
(reverse! files))))))
(define (segment-maxamp name beg dur)
(float-vector-peak (samples beg dur name)))
(define (segment-sound name high low)
(let* ((end (framples name))
(reader (make-sampler 0 name)) ; no need to open the sound and display it
(avg (make-moving-average :size 128))
(lavg (make-moving-average :size 2048)) ; to distinguish between slow pulse train (low horn) and actual silence
(segments (make-float-vector 100))
(segctr 0)
(possible-end 0)
(in-sound #f))
;; this block is where 99% of the time goes
(do ((i 0 (+ i 1)))
((= i end))
(let* ((samp (abs (next-sample reader)))
(val (moving-average avg samp))
(lval (moving-average lavg samp)))
(if in-sound
(if (< val low)
(begin
(set! possible-end i)
(if (< lval low)
(begin
(set! (segments segctr) (+ possible-end 128))
(set! segctr (+ segctr 1))
(set! in-sound #f)))))
(if (> val high)
(begin
(set! (segments segctr) (- i 128))
(set! segctr (+ segctr 1))
(set! in-sound #t))))))
(if in-sound
(begin
(set! (segments segctr) end)
(list (+ 1 segctr) segments))
(list segctr segments))))
(define* (do-one-directory fd dir-name ins-name (high .01) (low .001))
(snd-print (format #f ";~A~%" dir-name))
(for-each
(lambda (sound)
(let* ((sound-name (string-append dir-name "/" sound))
(boundary-data (segment-sound sound-name high low))
(boundaries (cadr boundary-data))
(segments (car boundary-data)))
(format fd "~%~%;;; ~A" sound)
(format fd "~%(~A ~S" ins-name (string-append dir-name "/" sound))
(do ((bnd 0 (+ bnd 2)))
((>= bnd segments))
(let* ((segbeg (floor (boundaries bnd)))
(segdur (floor (- (boundaries (+ 1 bnd)) segbeg))))
(format fd " (~A ~A ~A)" segbeg segdur (segment-maxamp sound-name segbeg segdur))))
(format fd ")")
(mus-sound-forget (string-append dir-name "/" sound))))
(sound-files-in-directory dir-name)))
(call-with-output-file
output-file
(lambda (fd)
(let ((old-fam (with-file-monitor)))
(set! (with-file-monitor) #f) ; no need to monitor these guys
(format fd ";;; sound data from ~S" main-dir)
(if (not (char=? (main-dir (- (length main-dir) 1)) #\/))
(set! main-dir (string-append main-dir "/")))
(for-each
(lambda (dir)
(if (not (char=? (dir 0) #\.))
(let ((ins-name (lower-case-and-no-spaces dir)))
(format fd "~%~%;;; ---------------- ~A ----------------" dir)
(if (string=? dir "Piano")
(for-each
(lambda (inner-dir)
(if (not (char=? (inner-dir 0) #\.))
(do-one-directory fd (string-append main-dir dir "/" inner-dir) ins-name .001 .0001))) ; pp piano notes are .01 maxamp and short
(directory->list (string-append main-dir dir)))
(do-one-directory fd (string-append main-dir dir) ins-name)))))
(directory->list main-dir))
(set! (with-file-monitor) old-fam)))))
;;; (sounds->segment-data "/home/bil/test/iowa/sounds/" "iowa.data")
|#
;;; not replaced:
;;; dac-hook stop-dac-hook with-level-meters make-level-meter save-mixes
;;; mus-sound-close-input mus-sound-close-output mus-sound-open-input mus-sound-open-output
;;; mus-sound-read mus-sound-reopen-output mus-sound-seek-frame mus-sound-write
(define continue-float-vector->file continue-frample->file)
(define continue-frame->file continue-frample->file)
(define file->float-vector file->frample)
(define file->float-vector? file->frample?)
(define file->frame file->frample)
(define file->frame? file->frample?)
(define float-vector->file frample->file)
(define float-vector->file? frample->file?)
(define (float-vector-mix f m o)
(frample->frample m f o))
(define frame float-vector)
(define (frame* f1 f2 outf)
(float-vector-multiply! (copy f1 (or outf (make-float-vector (length f1)))) f2))
(define (frame+ f1 f2 outf)
(float-vector-add! (copy f1 (or outf (make-float-vector (length f1)))) f2))
(define frame->file frample->file)
(define frame->file? frample->file?)
(define (frame->frame a b c)
(frample->frample (if (> (length a) (length b))
(values a b)
(values b a))
c))
(define (frame->list a)
(copy a (make-list (length a))))
(define frame->sample dot-product)
(define sample->frame frame*)
(define frame-ref float-vector-ref)
(define frame-set! float-vector-set!)
(define (frame? obj)
(and (float-vector? obj)
(= (vector-rank obj) 1)))
(define frames framples)
(define make-file->float-vector make-file->frample)
(define make-file->frame make-file->frample)
(define make-float-vector->file make-frample->file)
(define (make-frame chans . args)
(do ((v (make-float-vector chans))
(i 0 (+ i 1))
(arg args (cdr arg)))
((null? arg) v)
(set! (v i) (car arg))))
(define make-frame! make-frame)
(define make-frame->file make-frample->file)
(define (mixer-rows mx) (floor (sqrt (length mx))))
(define (make-mixer chans . args)
(do ((v (make-float-vector (* chans chans)))
(i 0 (+ i 1))
(arg args (cdr arg)))
((null? arg) v)
(set! (v i) (car arg))))
(define make-mixer! make-mixer)
(define (make-scalar-mixer chans val)
(do ((m (make-float-vector (* chans chans)))
(i 0 (+ i 1)))
((= i chans) m)
(set! (m (+ (* i chans) i)) val)))
(define (make-sound-data c f)
(make-float-vector (list c f)))
(define (mixer . args)
(apply make-mixer (floor (sqrt (length args))) args))
(define mixer+ frame+)
(define (mixer-ref mx i j)
(mx (+ (* i (mixer-rows mx)) j)))
(define (mixer-set! mx i j val)
(set! (mx (+ (* i (mixer-rows mx)) j)) val))
(define (mixer? obj)
(and (float-vector? obj)
(= (vector-rank obj) 1)
(let ((d (mixer-rows mx)))
(= (* d d) (length obj)))))
(define* (mixer* m1 m2 m3)
(do ((rows (mixer-rows m1))
(m4 (or m3 (make-float-vector (length m1))))
(i 0 (+ i 1)))
((= i rows) m4)
(do ((j 0 (+ j 1)))
((= j rows))
(set! (m4 (+ (* i rows) j))
(do ((sum 0.0)
(k 0 (+ k 1)))
((= k rows) sum)
(set! sum (+ sum (* (m1 (+ (* i rows) k)) (m2 (+ (* k rows) j))))))))))
(define multiply-arrays float-vector-multiply!)
(define mus-sound-frames mus-sound-framples)
(define region-frames region-framples)
(define selection-frames selection-framples)
(define (sound-data+ x1 x2)
(if (real? x1)
((if (real? x2) + float-vector-offset!) x2 x1)
((if (real? x2) float-vector-offset! float-vector-add!) x1 x2)))
(define (sound-data* x1 x2)
(if (real? x1)
((if (real? x2) * float-vector-scale!) x2 x1)
((if (real? x2) float-vector-scale! float-vector-multiply!) x1 x2)))
(define sound-data-add! float-vector-add!)
(define (sound-data-chans s)
((vector-dimensions s) 0))
(define sound-data-copy copy)
(define sound-data-fill! fill!)
(define (sound-data-length s)
((vector-dimensions s) 1))
(define (sound-data-maxamp s)
(let ((chans (sound-data-chans s)))
(do ((maxamps (make-list chans))
(i 0 (+ i 1)))
((= i chans) maxamps)
(set! (maxamps i) (float-vector-peak (s i))))))
(define sound-data-multiply! float-vector-multiply!)
(define sound-data-offset! float-vector-offset!)
(define sound-data-peak float-vector-peak)
(define sound-data-ref float-vector-ref)
(define (sound-data-reverse! s)
(let ((chans (sound-data-chans s)))
(do ((i 0 (+ i 1)))
((= i chans) s)
(set! (s i) (reverse (s i))))))
(define sound-data-scale! float-vector-scale!)
(define sound-data-set! float-vector-set!)
(define (sound-data? s)
(and (float-vector? s)
(= (vector-rank s) 2)))
(define transform-frames transform-framples)
(define vct-copy copy)
(define vct-fill! fill!)
(define vct float-vector)
(define vct-length length)
(define vct-reverse! reverse!) ; slight difference: no optional length arg (use make-shared-vector)
(define vct->list vector->list)
(define (list->vct x) (apply float-vector x))
(define make-vct make-float-vector)
(define (vector->vct v) (copy v (make-float-vector (length v))))
(define (vct->vector v) (copy v (make-vector (length v))))
(define vct? float-vector?)
|