1;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2;;;                                                                       ;;
3;;;                Centre for Speech Technology Research                  ;;
4;;;                     University of Edinburgh, UK                       ;;
5;;;                         Copyright (c) 1999                            ;;
6;;;                        All Rights Reserved.                           ;;
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32;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
33;;;                         Author: Alan W Black
34;;;                         Date:   April 1999
35;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
36;;;
37;;;  Support code for phone set definitions
38;;;
39
40(defmac (defPhoneSet form)
41  (list 'defPhoneSet_real
42	(list 'quote (cadr form))
43	(list 'quote (car (cddr form)))
44	(list 'quote (cadr (cddr form)))))
45
46(define (defPhoneSet_real name featdefs phones)
47  "(defPhoneSet NAME FEATTYPES PHONES)
48Define a phone set with given name, feature types and
49list of phones.  This also selects name as the current phoneset."
50  (let (info)
51    (if (not (eq? 'Features (car featdefs)))
52	(begin
53	  ;; Old format that has the same number of phone features for
54	  ;; all phones
55	  (set! info
56		(mapcar
57		 (lambda (ph)
58		   (let ((fvs
59			  (mapcar
60			   list
61			   (mapcar car featdefs)
62			   (cdr ph))))
63		   (ps_check_fvals
64		    (cons (car ph) (cons (list 'type t) fvs))
65		    (cons t fvs))
66		   (list (car ph) fvs)))
67		 phones)))
68	;; else
69	;;   New format where types are specified so phones may have
70        ;;   different features
71	(set! info
72	 (mapcar
73	  (lambda (ph)
74	    (let ((fvs
75		   (cons
76		    (list 'type (cadr ph))
77		    (mapcar
78		     list
79		     (mapcar car (cdr (assoc (cadr ph) (cdr featdefs))))
80		     (cddr ph)))))
81	      (ps_check_fvals
82	       (cons (car ph) fvs)
83	       (assoc (cadr ph) (cdr featdefs)))
84	      (list (car ph) fvs)))
85	  (cdr phones))))
86    (Param.set
87     (string-append "phonesets." name)
88     info)
89    (PhoneSet.select name)
90    (list name info)))
91
92(define (ps_check_fvals fvs featdefs)
93  "(ps_check_fvals fvs featdefs)
94Check that feature values in a phone definition are in the defined
95set of possibles."
96  (mapcar
97   (lambda (fp)
98     (let ((def (cdr (assoc (car fp) (cdr featdefs)))))
99       (cond
100	((not def)
101	 (error "Phoneset definition: phone has no defined type" fvs))
102	((not (member_string (car (cdr fp)) def))
103	 (error
104	  (format nil "Phoneset definition: phone feature %l is undefined" fp) fvs)))))
105   (cdr (cdr fvs))))
106
107(define (PhoneSet.select name)
108  "(PhoneSet.select name)
109Select named phonset as current."
110  (if (feats.present Param (string-append "phonesets." name))
111      (Param.set "phoneset" (Param.get (string-append "phonesets." name)))
112      (error "no phoneset defined: " name)))
113
114(define (PhoneSet.description name)
115  "(PhoneSet.description)
116Return (lisp) representation of current phoneset."
117  (feats.tolisp (Param.get "phoneset")))
118
119(define (PhoneSet.list)
120  "(PhoneSet.list)
121List of the names of the currently defined phonesets."
122  ;; This isn't a particularly efficient way to get the answer
123  (mapcar car (feats.tolisp (Param.get "phonesets"))))
124
125(define (PhoneSet.silences sils)
126  "(PhoneSet.silences SILLIST)
127Define the silence phones for the currently selected phoneset."
128  (Param.set "phoneset.silences" sils))
129
130(provide 'phoneset)
131
132
133
134
135