unofficial mirror of guix-patches@gnu.org 
 help / color / mirror / code / Atom feed
blob 96b27660e5ef3841bc1b454e774fc8d1dcb5a989 17646 bytes (raw)
name: gnu/services/audio.scm 	 # note: path name is non-authoritative(*)

  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
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
 
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 Peter Mikkelsen <petermikkelsen10@gmail.com>
;;; Copyright © 2019 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2020 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2022 Bruno Victal <mirai@makinata.eu>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu services audio)
  #:use-module (guix gexp)
  #:use-module (guix deprecation)
  #:use-module (guix diagnostics)
  #:use-module (guix i18n)
  #:use-module (gnu services)
  #:use-module (gnu services configuration)
  #:use-module (gnu services shepherd)
  #:use-module (gnu services admin)
  #:use-module (gnu system shadow)
  #:use-module (gnu packages admin)
  #:use-module (gnu packages mpd)
  #:use-module (guix records)
  #:use-module (ice-9 match)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-8)
  #:use-module (srfi srfi-26)
  #:export (mpd-output
            mpd-output?
            mpd-output-name
            mpd-output-type
            mpd-output-enabled?
            mpd-output-format
            mpd-output-tags?
            mpd-output-always-on?
            mpd-output-mixer-type
            mpd-output-replay-gain-handler
            mpd-output-extra-options

            mpd-plugin
            mpd-plugin?
            mpd-plugin-plugin
            mpd-plugin-name
            mpd-plugin-enabled?
            mpd-plugin-extra-options

            mpd-partition
            mpd-partition?
            mpd-partition-name
            mpd-partition-extra-options

            mpd-configuration
            mpd-configuration?
            mpd-configuration-package
            mpd-configuration-user
            mpd-configuration-group
            mpd-configuration-shepherd-requirement
            mpd-configuration-log-file
            mpd-configuration-log-level
            mpd-configuration-music-directory
            mpd-configuration-music-dir
            mpd-configuration-playlist-directory
            mpd-configuration-playlist-dir
            mpd-configuration-db-file
            mpd-configuration-state-file
            mpd-configuration-sticker-file
            mpd-configuration-default-port
            mpd-configuration-endpoints
            mpd-configuration-address
            mpd-configuration-database
            mpd-configuration-partitions
            mpd-configuration-neighbors
            mpd-configuration-inputs
            mpd-configuration-archive-plugins
            mpd-configuration-input-cache-size
            mpd-configuration-decoders
            mpd-configuration-resampler
            mpd-configuration-filters
            mpd-configuration-outputs
            mpd-configuration-playlist-plugins
            mpd-configuration-extra-options
            mpd-service-type))

;;; Commentary:
;;;
;;; Audio related services
;;;
;;; Code:

(define (uglify-field-name field-name)
  (let ((str (symbol->string field-name)))
    (string-join (string-split (if (string-suffix? "?" str)
                                   (string-drop-right str 1)
                                   str)
                               #\-) "_")))

(define list-of-string?
  (list-of string?))

(define list-of-symbol?
  (list-of symbol?))

(define (mpd-serialize-field field-name value)
  (let ((field (if (string? field-name) field-name
                   (uglify-field-name field-name)))
        (value (cond
                ((boolean? value) (if value "yes" "no"))
                ((string? value) value)
                (else (object->string value)))))
    #~(format #f "~a ~s~%" #$field #$value)))

(define (mpd-serialize-alist field-name value)
  #~(string-append #$@(generic-serialize-alist list mpd-serialize-field
                                               value)))

(define mpd-serialize-string mpd-serialize-field)

(define mpd-serialize-boolean mpd-serialize-field)


(define-maybe string (prefix mpd-))
(define-maybe list-of-string (prefix mpd-))
(define-maybe boolean (prefix mpd-))

;;; TODO: Procedures for deprecated fields, to be removed.

(define mpd-deprecated-fields '((music-dir . music-directory)
                                (playlist-dir . playlist-directory)
                                (address . endpoints)))

(define (port? value) (or (string? value) (integer? value)))

(define (mpd-serialize-deprecated-field field-name value)
  (if (maybe-value-set? value)
      (begin
        (warn-about-deprecation
         field-name #f
         #:replacement (assoc-ref mpd-deprecated-fields field-name))
        (match field-name
          ('playlist-dir (mpd-serialize-string "playlist_directory" value))
          ('music-dir (mpd-serialize-string "music_directory" value))
          ('address (mpd-serialize-string "bind_to_address" value))))
      ""))

(define (mpd-serialize-port field-name value)
  (when (string? value)
    (warning
     (G_ "string value for '~a' is deprecated, use integer instead~%")
     field-name))
  (mpd-serialize-field "port" value))

(define-maybe port (prefix mpd-))

;;;

;; Generic MPD plugin record, lists only the most prevalent fields.
(define-configuration mpd-plugin
  (plugin
   maybe-string
   "Plugin name.")

  (name
   maybe-string
   "Name.")

  (enabled?
   maybe-boolean
   "Whether the plugin is enabled/disabled.")

  (extra-options
   (alist '())
   "An association list of option symbols/strings to string values
to be appended to the plugin configuration. See
@uref{https://mpd.readthedocs.io/en/latest/plugins.html,MPD plugin reference}
for available options.")

  (prefix mpd-))

(define (mpd-serialize-mpd-plugin field-name value)
  #~(format #f "~a {~%~a}~%"
            '#$field-name
            #$(serialize-configuration value mpd-plugin-fields)))

(define (mpd-serialize-list-of-mpd-plugin field-name value)
  #~(string-append #$@(map (cut mpd-serialize-mpd-plugin field-name <>)
                           value)))

(define list-of-mpd-plugin? (list-of mpd-plugin?))

(define-maybe mpd-plugin (prefix mpd-))

(define-configuration mpd-partition
  (name
   string
   "Partition name.")

  (extra-options
   (alist '())
   "An association list of option symbols/strings to string values
to be appended to the partition configuration. See
@uref{https://mpd.readthedocs.io/en/latest/user.html#configuring-partitions,Configuring Partitions}
for available options.")

  (prefix mpd-))

(define (mpd-serialize-mpd-partition field-name value)
  #~(format #f "partition {~%~a}~%"
            #$(serialize-configuration value mpd-partition-fields)))

(define (mpd-serialize-list-of-mpd-partition field-name value)
  #~(string-append #$@(map (cut mpd-serialize-mpd-partition #f <>) value)))

(define list-of-mpd-partition?
  (list-of mpd-partition?))

(define-configuration mpd-output
  (name
   (string "MPD")
   "The name of the audio output.")

  (type
   (string "pulse")
   "The type of audio output.")

  (enabled?
   (boolean #t)
   "Specifies whether this audio output is enabled when MPD is started. By
default, all audio outputs are enabled. This is just the default
setting when there is no state file; with a state file, the previous
state is restored.")

  (format
   maybe-string
   "Force a specific audio format on output. See
@uref{https://mpd.readthedocs.io/en/latest/user.html#audio-output-format,Global Audio Format}
for a more detailed description.")

  (tags?
   (boolean #t)
   "If set to @code{#f}, then MPD will not send tags to this output. This
is only useful for output plugins that can receive tags, for example the
@code{httpd} output plugin.")

  (always-on?
   (boolean #f)
   "If set to @code{#t}, then MPD attempts to keep this audio output always
open. This may be useful for streaming servers, when you don’t want to
disconnect all listeners even when playback is accidentally stopped.")

  (mixer-type
   (string "none")
   "This field accepts a string that specifies which mixer should be used
for this audio output: the @code{hardware} mixer, the @code{software}
mixer, the @code{null} mixer (allows setting the volume, but with no
effect; this can be used as a trick to implement an external mixer
External Mixer) or no mixer (@code{none}).")

  (replay-gain-handler
   maybe-string
   "This field accepts a string that specifies how
@uref{https://mpd.readthedocs.io/en/latest/user.html#replay-gain,Replay Gain}
is to be applied. @code{software} uses an internal software volume control,
@code{mixer} uses the configured (hardware) mixer control and @code{none}
disables replay gain on this audio output.")

  (extra-options
   (alist '())
   "An association list of option symbols/strings to string values
to be appended to the audio output configuration.")

  (prefix mpd-))

(define (mpd-serialize-mpd-output field-name value)
  #~(format #f "audio_output {~%~a}~%"
            #$(serialize-configuration value mpd-output-fields)))

(define (mpd-serialize-list-of-mpd-plugin-or-output field-name value)
  (receive (plugins outputs)
      (partition mpd-plugin? value)
    #~(string-append #$@(map (cut mpd-serialize-mpd-plugin "audio_output" <>)
                             plugins)
                     #$@(map (cut mpd-serialize-mpd-output #f <>) outputs))))

(define list-of-mpd-plugin-or-output?
  (list-of (lambda (x)
             (or (mpd-output? x) (mpd-plugin? x)))))

(define-configuration mpd-configuration
  (package
   (file-like mpd)
   "The MPD package."
   empty-serializer)

  (user
   (string "mpd")
   "The user to run mpd as.")

  (group
   (string "mpd")
   "The group to run mpd as.")

  (shepherd-requirement
   (list-of-symbol '())
   "This is a list of symbols naming Shepherd services that this service
will depend on."
   empty-serializer)

  (environment-variables
   (list-of-string '())
   "A list of strings specifying environment variables."
   empty-serializer)

  (log-file
   (maybe-string "/var/log/mpd/log")
   "The location of the log file. Set to @code{syslog} to use the
local syslog daemon or @code{%unset-value} to omit this directive
from the configuration file.")

  (log-level
   maybe-string
   "Supress any messages below this threshold.
Available values: @code{notice}, @code{info}, @code{verbose},
@code{warning} and @code{error}.")

  (music-directory
   maybe-string
   "The directory to scan for music files.")

  (music-dir ; TODO: deprecated, remove later
   maybe-string
   "The directory to scan for music files."
   mpd-serialize-deprecated-field)

  (playlist-directory
   maybe-string
   "The directory to store playlists.")

  (playlist-dir ; TODO: deprecated, remove later
   maybe-string
   "The directory to store playlists."
   mpd-serialize-deprecated-field)

  (db-file
   maybe-string
   "The location of the music database.")

  (state-file
   maybe-string
   "The location of the file that stores current MPD's state.")

  (sticker-file
   maybe-string
   "The location of the sticker database.")

  (default-port
   (maybe-port 6600)
   "The default port to run mpd on.")

  (endpoints
   maybe-list-of-string
   "The addresses that mpd will bind to. A port different from
@var{default-port} may be specified, e.g. @code{localhost:6602} and
IPv6 addresses must be enclosed in square brackets when a different
port is used.
To use a Unix domain socket, an absolute path or a path starting with @code{~}
can be specified here."
   (lambda (_ x)
     (if (maybe-value-set? x)
         #~(string-append #$@(map
                              (cut mpd-serialize-field "bind_to_address" <>)
                              x)) "")))

  (address ; TODO: deprecated, remove later
   maybe-string
   "The address that mpd will bind to.
To use a Unix domain socket, an absolute path can be specified here."
   mpd-serialize-deprecated-field)

  (database
   maybe-mpd-plugin
   "MPD database plugin configuration.")

  (partitions
   (list-of-mpd-partition '())
   "List of MPD \"partitions\".")

  (neighbors
   (list-of-mpd-plugin '())
   "List of MPD neighbor plugin configurations.")

  (inputs
   (list-of-mpd-plugin '())
   "List of MPD input plugin configurations."
   (lambda (_ x)
     (mpd-serialize-list-of-mpd-plugin "input" x)))

  (archive-plugins
   (list-of-mpd-plugin '())
   "List of MPD archive plugin configurations."
   (lambda (_ x)
     (mpd-serialize-list-of-mpd-plugin "archive_plugin" x)))

  (input-cache-size
   maybe-string
   "MPD input cache size."
   (lambda (_ x)
     (if (maybe-value-set? x)
         #~(string-append "\ninput_cache {\n"
                          #$(mpd-serialize-string "size" x)
                          "}\n") "")))

  (decoders
   (list-of-mpd-plugin '())
   "List of MPD decoder plugin configurations."
   (lambda (_ x)
     (mpd-serialize-list-of-mpd-plugin "decoder" x)))

  (resampler
   maybe-mpd-plugin
   "MPD resampler plugin configuration.")

  (filters
   (list-of-mpd-plugin '())
   "List of MPD filter plugin configurations."
   (lambda (_ x)
     (mpd-serialize-list-of-mpd-plugin "filter" x)))

  (outputs
   (list-of-mpd-plugin-or-output (list (mpd-output)))
   "The audio outputs that MPD can use.
By default this is a single output using pulseaudio.")

  (playlist-plugins
   (list-of-mpd-plugin '())
   "List of MPD playlist plugin configurations."
   (lambda (_ x)
     (mpd-serialize-list-of-mpd-plugin "playlist_plugin" x)))

  (extra-options
   (alist '())
   "An association list of option symbols/strings to string values to be
appended to the configuration.")

  (prefix mpd-))

(define (mpd-serialize-configuration configuration)
  (mixed-text-file
   "mpd.conf"
   (serialize-configuration configuration mpd-configuration-fields)))

(define (mpd-log-rotation config)
  (match-record config <mpd-configuration> (log-file)
    (log-rotation
     (files (list log-file))
     (post-rotate #~(begin
                      (use-modules (gnu services herd))
                      (with-shepherd-action 'mpd ('reopen) #f))))))

(define (mpd-shepherd-service config)
  (match-record config <mpd-configuration> (user package shepherd-requirement
                                            log-file playlist-directory
                                            db-file state-file sticker-file
                                            environment-variables)
    (let* ((config-file (mpd-serialize-configuration config)))
      (shepherd-service
       (documentation "Run the MPD (Music Player Daemon)")
       (requirement `(user-processes loopback ,@shepherd-requirement))
       (provision '(mpd))
       (start #~(begin
                  (and=> #$(maybe-value log-file)
                         (compose mkdir-p dirname))

                  (let ((user (getpw #$user)))
                    (for-each
                     (lambda (x)
                       (when (and x (not (file-exists? x)))
                         (mkdir-p x)
                         (chown x (passwd:uid user) (passwd:gid user))))
                     (list #$(maybe-value playlist-directory)
                           (and=> #$(maybe-value db-file) dirname)
                           (and=> #$(maybe-value state-file) dirname)
                           (and=> #$(maybe-value sticker-file) dirname))))

                  (make-forkexec-constructor
                   (list #$(file-append package "/bin/mpd")
                         "--no-daemon"
                         #$config-file)
                   #:environment-variables '#$environment-variables)))
       (stop  #~(make-kill-destructor))
       (actions
        (list (shepherd-configuration-action config-file)
              (shepherd-action
               (name 'reopen)
               (documentation "Re-open log files and flush caches.")
               (procedure
                #~(lambda (pid)
                    (if pid
                        (begin
                          (kill pid SIGHUP)
                          (format #t
                                  "Issued SIGHUP to Service MPD (PID ~a)."
                                  pid))
                        (format #t "Service MPD is not running.")))))))))))

(define (mpd-accounts config)
  (match-record config <mpd-configuration> (user group)
    (list (user-group
           (name group)
           (system? #t))
          (user-account
           (name user)
           (group group)
           (system? #t)
           (comment "Music Player Daemon (MPD) user")
           ;; MPD can use $HOME (or $XDG_CONFIG_HOME) to place its data
           (home-directory "/var/lib/mpd")
           (shell (file-append shadow "/sbin/nologin"))))))

(define mpd-service-type
  (service-type
   (name 'mpd)
   (description "Run the Music Player Daemon (MPD).")
   (extensions
    (list (service-extension shepherd-root-service-type
                             (compose list mpd-shepherd-service))
          (service-extension account-service-type
                             mpd-accounts)
          (service-extension rottlog-service-type
                             (compose list mpd-log-rotation))))
   (default-value (mpd-configuration))))

debug log:

solving 96b27660e5 ...
found 96b27660e5 in https://yhetil.org/guix-patches/6b51304098d50a01c207abddb3b02ba863034e56.1675367583.git.mirai@makinata.eu/
found 7168320635 in https://yhetil.org/guix-patches/fe3fc24ea98bf66c95d0c589064a5c2edd7218bd.1675367583.git.mirai@makinata.eu/
found b7cb0ebe38 in https://git.savannah.gnu.org/cgit/guix.git
preparing index
index prepared:
100644 b7cb0ebe3897f21b04871e0b6df730dfb68cca91	gnu/services/audio.scm

applying [1/2] https://yhetil.org/guix-patches/fe3fc24ea98bf66c95d0c589064a5c2edd7218bd.1675367583.git.mirai@makinata.eu/
diff --git a/gnu/services/audio.scm b/gnu/services/audio.scm
index b7cb0ebe38..7168320635 100644


applying [2/2] https://yhetil.org/guix-patches/6b51304098d50a01c207abddb3b02ba863034e56.1675367583.git.mirai@makinata.eu/
diff --git a/gnu/services/audio.scm b/gnu/services/audio.scm
index 7168320635..96b27660e5 100644

Checking patch gnu/services/audio.scm...
Applied patch gnu/services/audio.scm cleanly.
Checking patch gnu/services/audio.scm...
Applied patch gnu/services/audio.scm cleanly.

index at:
100644 96b27660e5ef3841bc1b454e774fc8d1dcb5a989	gnu/services/audio.scm

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/guix.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).