From 6be4708f0f20da7f9065e4b12aa6baaf6595296c Mon Sep 17 00:00:00 2001
From: amartin <olpc@xo-05-28-21.localdomain>
Date: Sat, 11 Aug 2007 12:00:48 +0000
Subject: Jam intsrument picking

---
(limited to 'Jam/JamMain.py')

diff --git a/Jam/JamMain.py b/Jam/JamMain.py
index ac1fb12..e26e7d7 100644
--- a/Jam/JamMain.py
+++ b/Jam/JamMain.py
@@ -5,16 +5,36 @@ import gtk
 
 from SubActivity import SubActivity
 
+import Config
+
 from Jam.Desktop import Desktop
 import Jam.Picker as Picker
     
+from Util.CSoundNote import CSoundNote
+from Util.CSoundClient import new_csound_client
+from Fillin import Fillin
+from RythmGenerator import generator
+from Util.NoteDB import Note
+
+from math import sqrt
+
 class JamMain(SubActivity):
     
     def __init__(self, activity, set_mode):
         SubActivity.__init__(self, set_mode)
 
         self.activity = activity
+
+        #-- initial settings ----------------------------------
+        self.tempo = Config.PLAYER_TEMPO
+        self.volume = 50
+        self.reverb = 0
         
+        self.csnd = new_csound_client()
+        for i in range(1,9):
+            self.csnd.setTrackVolume( 100, i )
+        self.csnd.setMasterVolume( self.volume )
+        self.csnd.loopSetTempo( self.tempo )
 
         #======================================================
         # GUI
@@ -60,6 +80,17 @@ class JamMain(SubActivity):
 
             self.curPicker = None
             self.setPicker( Picker.Instrument )
+        
+        #-- Keyboard ------------------------------------------
+        self.key_dict = {}
+        self.nextTrack = 1
+
+        # default instrument
+        self._updateInstrument( Config.INSTRUMENTS["kalimba"].instrumentId, 0.5 )
+
+        #-- Drums ---------------------------------------------
+        # use dummy values for now
+        self.drumFillin = Fillin( 2, 100, Config.INSTRUMENTS["drum1kit"].instrumentId, self.reverb, 1 )
 
     def onActivate( self, arg ):
         pass
@@ -85,3 +116,115 @@ class JamMain(SubActivity):
             self.GUI["bankPicker"].pack_start( self.pickers[type] )
             self.curPicker = type
 
+    def onKeyPress( self, widget, event ):
+        key = event.hardware_keycode
+
+        if self.key_dict.has_key( key ): # repeated press
+            return
+
+        if Config.KEY_MAP_PIANO.has_key( key ):
+            pitch = Config.KEY_MAP_PIANO[key]
+            inst = Config.INSTRUMENTS[self.instrument["name"]]
+
+            if inst.kit: # drum kit
+                if pitch in GenerationConstants.DRUMPITCH:
+                    pitch = GenerationConstants.DRUMPITCH[pitch]
+                self._playNote( key, 
+                                36, 
+                                self.instrument["amplitude"], 
+                                self.instrument["pan"], 
+                                100, 
+                                inst.kit[pitch],
+                                self.instrument["reverb"] ) 
+            else:
+                if event.state == gtk.gdk.MOD1_MASK:
+                    pitch += 5
+                
+                if inst.csoundInstrumentId == Config.INST_PERC: #Percussions resonance
+                    duration = 60 
+                else:
+                    duration = -1
+
+                self._playNote( key, 
+                                pitch,
+                                self.instrument["amplitude"], 
+                                self.instrument["pan"], 
+                                duration,
+                                self.instrument["id"], 
+                                self.instrument["reverb"] ) 
+ 
+               
+            
+
+    def onKeyRelease( self, widget, event ):
+        key = event.hardware_keycode
+
+        if self.key_dict.has_key( key ): 
+            self._stopNote( key )
+
+    def _playNote( self, key, pitch, amplitude, pan, duration, instrumentId, reverb ):
+        self.key_dict[key] = CSoundNote( 0, # onset
+                                         pitch,
+                                         amplitude,
+                                         pan,
+                                         duration,
+                                         self.nextTrack,
+                                         instrumentId,
+                                         reverbSend = reverb,
+                                         tied = True,
+                                         mode = 'mini' )
+        self.nextTrack += 1
+        if self.nextTrack > 8:
+            self.nextTrack = 1
+        self.csnd.play(self.key_dict[key], 0.3)
+
+    def _stopNote( self, key ):
+        csnote = self.key_dict[key]
+        if Config.INSTRUMENTSID[ csnote.instrumentId ].csoundInstrumentId == Config.INST_TIED:
+            csnote.duration = .5
+            csnote.decay = 0.7
+            csnote.tied = False
+            self.csnd.play(csnote, 0.3)
+        del self.key_dict[key]
+ 
+    def _updateInstrument( self, id, volume ): 
+        self.instrument = { "name":         Config.INSTRUMENTSID[id].name,
+                            "id":           id,
+                            "amplitude":    sqrt( self.volume*volume*0.1 ),
+                            "pan":          0.5,
+                            "reverb":       self.reverb }
+
+
+    def _playDrum( self, id, volume, beats, regularity, seed ):
+        def flatten(ll):
+            rval = []
+            for l in ll:
+                rval += l
+            return rval
+
+        noteOnsets = []
+        notePitchs = []
+        i = 0
+        self.noteList= []
+        self.csnd.loopClear()
+        for x in flatten( generator( Config.INSTRUMENTSID[id].name, beats, 0.8, regularity, self.reverb) ):
+            x.amplitude = x.amplitude * volume 
+            noteOnsets.append(x.onset)
+            notePitchs.append(x.pitch)
+            n = Note(0, x.trackId, i, x)
+            self.noteList.append( (x.onset, n) )
+            i = i + 1
+            self.csnd.loopPlay(n,1)                    #add as active
+        self.csnd.loopSetNumTicks( beats * Config.TICKS_PER_BEAT )
+
+        self.drumFillin.setProperties( self.tempo, Config.INSTRUMENTSID[id].name, volume, beats, self.reverb ) 
+        self.drumFillin.unavailable( noteOnsets, notePitchs )
+
+        self.drumFillin.play()
+        self.csnd.loopSetTick(0)
+        self.csnd.loopStart()
+        
+    def _stopDrum( self ):
+        self.drumFillin.stop()
+        self.csnd.loopPause()
+
--
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