X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Fmidi.scm;h=11b565ea478ec43fe35f834d73d14c036fa8261d;hb=001ad87ae4b9cccc9588557e4b944b11b8fe05f1;hp=ed82a5a525c2e56aef6db4f71c9b5f6f07742978;hpb=d983c03ae234308c7b284f42e00aff40fd93e14c;p=lilypond.git

diff --git a/scm/midi.scm b/scm/midi.scm
index ed82a5a525..11b565ea47 100644
--- a/scm/midi.scm
+++ b/scm/midi.scm
@@ -1,8 +1,8 @@
 ;;;; midi.scm -- scm midi variables and functions
 ;;;;
 ;;;;  source file of the GNU LilyPond music typesetter
-;;;; 
-;;;; (c)  2000--2004 Jan Nieuwenhuizen <janneke@gnu.org>
+;;;;
+;;;; (c) 2000--2009 Jan Nieuwenhuizen <janneke@gnu.org>
 
 
 
@@ -14,33 +14,31 @@
 ;; define factor of total volume per dynamic marking
 (define-public absolute-volume-alist '())
 (set! absolute-volume-alist
-      (append 
+      (append
       '(
 	("sf" . 1.00)
 	("fffff" . 0.95)
-	("ffff" . 0.91)
-	("fff" . 0.81)
-	("ff" . 0.71)
-	("f" . 0.61)
-	("mf" . 0.50)
-	("mp" . 0.40)
-	("p" . 0.30)
-	("pp" . 0.20)
-	("ppp" . 0.10)
-	("pppp" . 0.08)
-	("ppppp" . 0.05)
+	("ffff" . 0.92)
+	("fff" . 0.85)
+	("ff" . 0.80)
+	("f" . 0.75)
+	("mf" . 0.68)
+	("mp" . 0.61)
+	("p" . 0.55)
+	("pp" . 0.49)
+	("ppp" . 0.42)
+	("pppp" . 0.34)
+	("ppppp" . 0.25)
 	)
       absolute-volume-alist))
 
 (define-public (default-dynamic-absolute-volume s)
-  (let ((entry (assoc s absolute-volume-alist)))
-    (if entry
-	(cdr entry))))
+  (assoc-get s absolute-volume-alist))
 
 ;; define factors of total volume of minimum and maximum volume
 (define-public instrument-equalizer-alist '())
 (set! instrument-equalizer-alist
-      (append 
+      (append
        '(
 	 ("flute" . (0 . 0.7))
 	 ("oboe" . (0 . 0.7))
@@ -56,6 +54,9 @@
 	 )
        instrument-equalizer-alist))
 
+(define-public (default-instrument-equalizer s)
+  (assoc-get s instrument-equalizer-alist))
+
 ;; (name . program+32768*(channel10 ? 1 : 0))
 (define instrument-names-alist '())
 (set! instrument-names-alist
@@ -98,7 +99,7 @@
 	  ("electric guitar (muted)" . ,(- 29 1))
 	  ("overdriven guitar" . ,(- 30 1))
 	  ("distorted guitar" . ,(- 31 1))
-	  ("guitar harmo(dinics" . ,(- 32 1))
+	  ("guitar harmonics" . ,(- 32 1))
 
 	  ; (33-40 bass)
 	  ("acoustic bass" . ,(- 33 1))
@@ -117,7 +118,7 @@
 	  ("contrabass" . ,(- 44 1))
 	  ("tremolo strings" . ,(- 45 1))
 	  ("pizzicato strings" . ,(- 46 1))
-	  ("orchestral strings" . ,(- 47 1))
+	  ("orchestral harp" . ,(- 47 1))
 	  ("timpani" . ,(- 48 1))
 
 	  ; (49-56 ensemble)
@@ -249,26 +250,24 @@
 	  )
        instrument-names-alist))
 
-(define-public (default-instrument-equalizer s)
-  (let ((entry (assoc s instrument-equalizer-alist)))
-    (if entry
-	(cdr entry))))
-
 (define-public (percussion? instrument)
   "
 returns whether the instrument should use midi channel 9
 "
   (let* ((inst  (symbol->string instrument))
-         (entry (assoc inst instrument-names-alist)))
-     (and entry (>= (cdr entry) 32768))))
+         (entry (assoc-get inst instrument-names-alist)))
+     (and entry (>= entry 32768)
+          entry)))
 
 (define-public (midi-program instrument)
 "
 returns the program of the instrument
 "
   (let* ((inst  (symbol->string instrument))
-         (entry (assoc inst instrument-names-alist)))
-    (if entry (modulo (cdr entry) 32768) #f)))
+         (entry (assoc-get inst instrument-names-alist)))
+    (if entry
+        (modulo entry 32768)
+	#f)))
 
 ;; 90 == 90/127 == 0.71 is supposed to be the default value
 ;; urg: we should set this at start of track
@@ -276,4 +275,25 @@ returns the program of the instrument
 
 (define-public (alterations-in-key pitch-list)
   "Count number of sharps minus number of flats"
-  (/ (apply + (map cdr pitch-list)) 2))
+
+  (* (apply + (map cdr pitch-list)) 2))
+
+
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;
+
+(define-public (write-performances-midis performances basename . rest)
+  (let ((midi-ext (ly:get-option 'midi-extension)))
+    (let
+	loop
+      ((perfs performances)
+       (count (if (null? rest) 0 (car rest))))
+      (if (pair?  perfs)
+	  (begin
+	    (ly:performance-write
+	     (car perfs)
+	     (if (> count 0)
+		 (format #f "~a-~a.~a" basename count midi-ext)
+		 (format #f "~a.~a" basename midi-ext)))
+	    (loop (cdr perfs) (1+ count)))))))