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;;;                                                                       ;;
;;;                Centre for Speech Technology Research                  ;;
;;;                     University of Edinburgh, UK                       ;;
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;;;
;;;  Functions specific to using Festival in cslush part of the OGI toolkit
;;;  The OGI toolkit is a complete dialog building system with speech
;;;  recognition and synthesis (Festival) it is available for free for
;;;  research purposes from
;;;     http://www.cse.ogi.edu/CSLU/toolkit/toolkit.html
;;;
;;;  Note this cslush interface requires you to compile festival
;;;  with tcl (7.6)
;;;
;;;  The functions replace the C++ level functions Jacques H. de Villiers
;;;  <jacques@cse.ogi.edu> from CSLU wrote for the previous version
;;;

(if (not (member 'tcl *modules*))
      (error "cslush: can't load cslush, TCL not supported in this installation of Festival."))

(define (cslush.getwave utt)
"(cslush.getwave UTT)
Extract wave memory info, pass this to wave import in CSLUsh."
 (format nil "%s %s %s"
	 (utt.wave.info utt 'data_addr)
	 (utt.wave.info utt 'num_samples)
	 (utt.wave.info utt 'sample_rate)))

(define (cslush.getphone utt)
"(cslush.getphone UTT)
Return segment names a single string of phones, for use to pass to
TCL."
  (let ((phones ""))
    (mapcar
     (lambda (s)
       (if (string-equal phones "")
	   (set! phones (format nil "%s" (utt.streamitem.feat utt s 'name)))
	   (set! phones (format nil "%s %s" 
				phones (utt.streamitem.feat utt s 'name)))))
     (utt.stream utt 'Segment))
    phones))

(define (cslush TCLCOMMAND)
"(cslush TCLCOMMAND)
Pass TCLCOMMAND to TCL interpreter, returns what TCL returns as a
string."
  (tcl_eval TCLCOMMAND))


(provide 'cslush)