Implémentation de l'ajustement « en live » du tempo d'exécution de la chanson sur...

[minwii.git] / src / minwii / synth.py

diff --git a/src/minwii/synth.py b/src/minwii/synth.py
index c1faee7..6d0034f 100755 (executable)
--- a/src/minwii/synth.py
+++ b/src/minwii/synth.py
@@ -7,9 +7,11 @@ $URL$
 """
 from os.path import realpath, sep, exists
 from  fluidsynth import Synth as FSynth
+from fluidsynth import fluid_settings_setnum
 from log import console, envLogger, eventLogger
 import pygame
 import events
+from config import SOUND_FONT
 
 class Synth(FSynth) :
     """
@@ -23,14 +25,10 @@ class Synth(FSynth) :
         FSynth.__init__(self, gain=gain, samplerate=samplerate)
         
         if not sfPath :
-            sfPath = realpath(__file__).split(sep)
-            sfPath = sfPath[:-1]
-            sfPath.append('soundfonts')
-
-            sfPath.append('FluidR3_GM.sf2')
-            sfPath = sep.join(sfPath)
-
+            sfPath = SOUND_FONT
         assert exists(sfPath)
+        
+        self._gain = gain
 
         self.start()
         self.fsid = self.sfload(sfPath)
@@ -42,6 +40,22 @@ class Synth(FSynth) :
         console.debug('arrêt du synthétiseur')
         self.delete()
     
+    def gain(self, gain) :
+        self._gain = gain
+        fluid_settings_setnum(self.settings, 'synth.gain', self._gain)
+    
+    def inc_gain(self, step = 0.1) :
+        self._gain = self._gain + step
+        if self._gain > 5 :
+            self._gain = 5
+        self.gain(self._gain)
+    
+    def dec_gain(self, step = 0.1) :
+        self._gain = self._gain - step
+        if self._gain < 0 :
+            self._gain = 0
+        self.gain(self._gain)
+
     def adjust_octave(self, chan, octave) :
         '''
         Abaisse ou élève les notes de n octave