aboutsummaryrefslogtreecommitdiff
path: root/emms-lyrics.el
blob: cc990ef6229a7df824cdc36ce1bccc7822ca24ff (plain) (blame)
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
;;; emms-lyrics.el --- Display lyrics synchronically

;; Copyright (C) 2005, 2006 Free Software Foundation, Inc.

;; Author: William Xu <william.xwl@gmail.com>
;; Keywords: emms music lyric

;; This file is part of EMMS.

;; EMMS 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 2, or (at your option)
;; any later version.
;;
;; EMMS 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 EMMS; if not, write to the Free Software Foundation,
;; Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.

;;; Commentary:

;; This package enables you to play music files and display lyrics
;; synchronically! :-)

;; Put this file into your load-path and the following into your
;; ~/.emacs:
;;             (require 'emms-lyrics)
;;
;; Then either `M-x emms-lyrics-enable' or add (emms-lyrics 1) in
;; your .emacs to enable.

;;; Change Log:

;; v 0.3 [2005/07/19 17:53:25] Add `emms-lyric-find-lyric' for find
;;       lyric files in local repository `emms-lyric-dir'. Rewrite
;;       `emms-lyric-setup' to support more lyric formats.

;; v 0.2 [2005/07/18 16:10:02] Fix `emms-lyric-pause' bug. Now it works
;;       fine. Add `emms-lyric-seek', but which does not work very well
;;       currently.

;; v 0.1 [2005/07/17 20:07:30] Initial version.

;;; Known bugs:

;; 1. Sometimes music playing would be blocked by some process, like
;;    startup Gnus, while emms-lyrics still goes on, thus make music and
;;    lyrics asynchronical.

;;; Todo:

;; 1. Maybe the lyric setup should run before `emms-start'.
;; 2. Give a user a chance to choose when finding out multiple lyrics.
;; 3. Search lyrics from internet ?

;;; Code:

(defvar emms-lyrics-version "0.5 $Revision: 1.14 $"
  "EMMS lyric version string.")
;; $Id: emms-lyric.el,v 1.14 2005/08/25 13:03:02 xwl Exp $

(require 'emms)
(require 'emms-player-simple)
(require 'emms-source-file)
(require 'time-date)

;;; User Customization

(defgroup emms-lyrics nil
  "Lyrics module for EMMS."
  :group 'emms)

(defcustom emms-lyrics-display-on-modeline t
  "If non-nil, display lyrics on mode line."
  :type 'boolean
  :group 'emms-lyrics)

(defcustom emms-lyrics-display-on-minibuffer nil
  "If non-nil, display lyrics on minibuffer."
  :type 'boolean
  :group 'emms-lyrics)

(defcustom emms-lyrics-dir ""
  "Local lyrics repository. `emms-lyrics-find-lyric' will look
for lyrics in current directory and this directory."
  :type 'string
  :group 'emms-lyrics)

(defcustom emms-lyrics-display-format " %s "
  "Format for displaying lyrics."
  :type 'string
  :group 'emms-lyrics)

(defcustom emms-lyrics-coding-system 'utf-8
  "Coding system used in the output of lyrics."
  :type 'coding-system
  :group 'emms-lyrics)

(defcustom emms-lyrics-mode-hook nil
  "Normal hook run after entering Emms Lyric mode."
  :type 'hook
  :group 'emms-lyrics)

;;; Emms Lyrics

(defvar emms-lyrics-display-p t
  "If non-nil, will diplay lyrics.")

(defvar emms-lyrics-alist nil
  "a list of the form: '((time0 lyric0) (time1 lyric1)...)). In short,
at time-i, display lyric-i.")

(defvar emms-lyrics-timers nil
  "timers for displaying lyric.")

(defvar emms-lyrics-start-time nil
  "emms lyric start time.")

(defvar emms-lyrics-pause-time nil
  "emms lyric pause time.")

(defvar emms-lyrics-elapsed-time 0
  "How long time has emms lyric played.")

(defvar emms-lyrics-mode-line-string ""
  "current lyric.")

(defun emms-lyrics-read-file (file)
  "Read a lyric file(LRC format). FILE should end up with \".lrc\", its
content looks like one of the following:

    [1:39]I love you, Emacs!
    [00:39]I love you, Emacs!
    [00:39.67]I love you, Emacs!

To find FILE, will look up in current directory and `emms-lyrics-dir'."
  (when (eq 'file (emms-track-get
                   (emms-playlist-current-selected-track)
                   'type))
    (unless (file-exists-p file)
      (setq file (emms-lyrics-find-lyric file)))
    (when (and file (not (string= file "")) (file-exists-p file))
      (with-temp-buffer
        (let ((coding-system-for-read emms-lyrics-coding-system))
          (insert-file-contents file)
          (while (search-forward-regexp "\\[[0-9:.]+\\].*" nil t)
            (let ((lyric-string (match-string 0))
                  (time 0)
                  (lyric ""))
              (setq lyric
                    (emms-replace-regexp-in-string ".*\\]" "" lyric-string))
              (while (string-match "\\[[0-9:.]+\\]" lyric-string)
                (let* ((time-string (match-string 0 lyric-string))
                       (semi-pos (string-match ":" time-string)))
                  (setq time
                        (+ (* (string-to-number
                               (substring time-string 1 semi-pos))
                              60)
                           (string-to-number
                            (substring time-string
                                       (1+ semi-pos)
                                       (1- (length time-string))))))
                  (setq lyric-string
                        (substring lyric-string (length time-string)))
                  (setq emms-lyrics-alist
                        (append emms-lyrics-alist `((,time ,lyric))))
                  (setq time 0))))))
        t))))

(defun emms-lyrics-start ()
  "Start displaying lryics."
  (setq emms-lyrics-start-time (current-time)
	emms-lyrics-pause-time nil
	emms-lyrics-elapsed-time 0)
  (when (let ((file
	       (emms-track-get
		(emms-playlist-current-selected-track)
		'name)))
	  (emms-lyrics-read-file
	   (emms-replace-regexp-in-string
	    (file-name-extension file) "lrc" file)))
    (emms-lyrics-set-timer)))

(defun emms-lyrics-stop ()
  "Stop displaying lyrics."
  (interactive)
  (when emms-lyrics-alist
    (mapc #'emms-cancel-timer emms-lyrics-timers)
    (if (or (not emms-player-paused-p)
	    emms-player-stopped-p)
	(setq emms-lyrics-alist nil
	      emms-lyrics-timers nil
	      emms-lyrics-mode-line-string ""))))

(defun emms-lyrics-pause ()
  "Pause displaying lyrics."
  (if emms-player-paused-p
      (setq emms-lyrics-pause-time (current-time))
    (when emms-lyrics-pause-time
      (setq emms-lyrics-elapsed-time
	    (+ (time-to-seconds
		(time-subtract emms-lyrics-pause-time
			       emms-lyrics-start-time))
	       emms-lyrics-elapsed-time)))
    (setq emms-lyrics-start-time (current-time)))
  (when emms-lyrics-alist
    (if emms-player-paused-p
	(emms-lyrics-stop)
      (emms-lyrics-set-timer))))

(defun emms-lyrics-seek (sec)
  "Seek forward or backward SEC seconds lyrics."
  (setq emms-lyrics-elapsed-time
	(+ emms-lyrics-elapsed-time
	   (time-to-seconds
	    (time-subtract (current-time)
			   emms-lyrics-start-time))
	   sec))
  (when (< emms-lyrics-elapsed-time 0)	; back to start point
    (setq emms-lyrics-elapsed-time 0))
  (setq emms-lyrics-start-time (current-time))
  (when emms-lyrics-alist
    (let ((paused-orig emms-player-paused-p))
      (setq emms-player-paused-p t)
      (emms-lyrics-stop)
      (setq emms-player-paused-p paused-orig))
    (emms-lyrics-set-timer)))

(defun emms-lyrics-sync (sec)
  "Synchronize the lyric display at SEC seconds."
  (setq emms-lyrics-start-time (current-time)
        emms-lyrics-elapsed-time 0)
  (emms-lyrics-seek sec))

(defun emms-lyrics-toggle-display-on-minibuffer ()
  "Toggle display lyrics on minibbufer."
  (interactive)
  (if emms-lyrics-display-on-minibuffer
      (progn
	(setq emms-lyrics-display-on-minibuffer nil)
	(message "Disable lyrics on minibufer."))
    (setq emms-lyrics-display-on-minibuffer t)
    (message "Enable lyrics on minibufer.")))

(defun emms-lyrics-toggle-display-on-modeline ()
  "Toggle display lyrics on mode line."
  (interactive)
  (if emms-lyrics-display-on-modeline
      (progn
	(setq emms-lyrics-display-on-modeline nil
	      emms-lyrics-mode-line-string "")
	(message "Disable lyrics on mode line."))
    (setq emms-lyrics-display-on-modeline t)
    (message "Enable lyrics on mode line.")))

(defun emms-lyrics (arg)
  "Turn on emms lyrics display if ARG is positive, off otherwise."
  (interactive "p")
  (if (and arg (> arg 0))
      (progn
        (setq emms-lyrics-display-p t)
        (add-hook 'emms-player-started-hook     'emms-lyrics-start)
        (add-hook 'emms-player-stopped-hook     'emms-lyrics-stop)
        (add-hook 'emms-player-finished-hook    'emms-lyrics-stop)
        (add-hook 'emms-player-paused-hook      'emms-lyrics-pause)
        (add-hook 'emms-player-seeked-functions 'emms-lyrics-seek)
        (add-hook 'emms-player-time-set-functions 'emms-lyrics-sync))
    (emms-lyrics-stop)
    (setq emms-lyrics-display-p nil)
    (emms-lyrics-restore-mode-line)
    (remove-hook 'emms-player-started-hook     'emms-lyrics-start)
    (remove-hook 'emms-player-stopped-hook     'emms-lyrics-stop)
    (remove-hook 'emms-player-finished-hook    'emms-lyrics-stop)
    (remove-hook 'emms-player-paused-hook      'emms-lyrics-pause)
    (remove-hook 'emms-player-seeked-functions 'emms-lyrics-seek)
    (remove-hook 'emms-player-time-set-functions 'emms-lyrics-sync)))

;;;###autoload
(defun emms-lyrics-enable ()
  "Enable displaying emms lyrics."
  (interactive)
  (emms-lyrics 1)
  (message "emms lyrics enabled."))

;;;###autoload
(defun emms-lyrics-disable ()
  "Disable displaying emms lyrics."
  (interactive)
  (emms-lyrics -1)
  (message "emms lyrics disabled."))

;;;###autoload
(defun emms-lyrics-toggle ()
  "Toggle displaying emms lyrics."
  (interactive)
  (if emms-lyrics-display-p
      (emms-lyrics-disable)
    (emms-lyrics-enable)))

(defun emms-lyrics-set-timer ()
  "Set timers for displaying lyrics."
  (setq emms-lyrics-timers
	(mapcar
	 '(lambda (arg)
	    (let ((time (- (car arg) emms-lyrics-elapsed-time))
		  (lyric (cadr arg)))
	      (when (>= time 0)
		(run-at-time (format "%d sec" time)
			     nil
			     'emms-lyrics-display
			     lyric))))
	 emms-lyrics-alist)))

(defun emms-lyrics-mode-line ()
  "Add lyric to the mode line."
  (or global-mode-string (setq global-mode-string '("")))
  (unless (member 'emms-lyrics-mode-line-string
		  global-mode-string)
    (setq global-mode-string
	  (append global-mode-string
		  '(emms-lyrics-mode-line-string)))))

(defun emms-lyrics-restore-mode-line ()
  "Restore the mode line."
  (setq global-mode-string
	(remove 'emms-lyrics-mode-line-string global-mode-string))
  (force-mode-line-update))

(defun emms-lyrics-display (lyric)
  "Display lyric.

LYRIC is current playing lyric.

See `emms-lyrics-display-on-modeline' and
`emms-lyrics-display-on-minibuffer' on how to config where to
display."
  (when emms-lyrics-alist
    (when emms-lyrics-display-on-modeline
      (emms-lyrics-mode-line)
      (setq emms-lyrics-mode-line-string
	    (format emms-lyrics-display-format lyric))
      (force-mode-line-update))
    (when emms-lyrics-display-on-minibuffer
      (message lyric))))

(defun emms-lyrics-find-lyric (file)
  "Use `emms-source-file-gnu-find' to find lrc FILE. You should specify
a valid `emms-lyrics-dir'."
  (unless (string= emms-lyrics-dir "")
    ;; If find two or more lyric files, only return the first one. Good
    ;; luck! :-)
    (car (split-string
	  (shell-command-to-string
	   (concat emms-source-file-gnu-find " "
		   emms-lyrics-dir " -name "
		   "'"			; wrap up whitespaces
		   (emms-replace-regexp-in-string
		    "'" "*"		; FIX ME, '->\'
		    (file-name-nondirectory file))
		   "'"))
	  "\n"))))

;;; emms-lyrics-mode

(defvar emms-lyrics-mode-map
  (let ((map (make-sparse-keymap)))
    (define-key map "p" 'emms-lyrics-previous-line)
    (define-key map "n" 'emms-lyrics-next-line)
    (define-key map "i" 'emms-lyrics-insert-time)
    map)
  "Keymap for `emms-lyrics-mode'.")

(defun emms-lyrics-rem* (x y)
  "The remainder of X divided by Y, with the same sign as X."
  (let* ((q (floor x y))
         (rem (- x (* y q))))
    (if (= rem 0)
        0
      (if (eq (>= x 0) (>= y 0))
          rem
        (- rem y)))))

(defun emms-lyrics-insert-time ()
  "Insert lyric time in the form: [01:23.21], then goto the
beginning of next line."
  (interactive)
  (let* ((total (+ (time-to-seconds
		    (time-subtract (current-time)
				   emms-lyrics-start-time))
		   emms-lyrics-elapsed-time))
	 (min (/ (* (floor (/ total 60)) 100) 100))
	 (sec (/ (floor (* (emms-lyrics-rem* total 60) 100)) 100.0)))
    (insert (emms-replace-regexp-in-string
	     " " "0" (format "[%2d:%2d]" min sec))))
  (emms-lyrics-next-line))

(defun emms-lyrics-next-line ()
  "Goto the beginning of next line."
  (interactive)
  (forward-line 1))

(defun emms-lyrics-previous-line ()
  "Goto the beginning of previous line."
  (interactive)
  (forward-line -1))

(define-derived-mode emms-lyrics-mode nil "Emms Lyric"
  "Major mode for creating lyric files.
\\{emms-lyrics-mode-map}"
  (run-hooks 'emms-lyrics-mode-hook))

(provide 'emms-lyrics)

;;; emms-lyrics.el ends here