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import pygtk
pygtk.require( '2.0' )
import gtk
import gobject
import time
import Config
from Util.CSoundNote import CSoundNote
from Util.CSoundClient import new_csound_client
from Util.NoteDB import Note
from Util.NoteDB import PARAMETER
class MiniSequencer:
def __init__( self, recordButtonState ):
self.notesList = []
self.sequencer = []
self.pitchs = []
self.beat = 4
self.volume = 0.5
self.tempo = Config.PLAYER_TEMPO
self.checkOk = 0
self.tick = 0
self.id = 1000
self.csnd = new_csound_client()
self.startLooking = 0
self.recordState = 0
self.startPoint = 0
self.recordButtonState = recordButtonState
self.playbackTimeout = None
self.playState = 0
def setTempo( self, tempo ):
self.tempo = tempo
gobject.source_remove( self.playBackTimeout )
self.playState = 0
def handleRecordButton( self, widget, event ):
if not self.startLooking:
if 1: #widget.get_active() == True:
self.beats = [i*4 for i in range(self.beat)]
self.upBeats = [i+2 for i in self.beats]
self.realTick = [i for i in range(self.beat*4)]
if event.button == 1:
self.clearSequencer()
self.startLooking = 1
self.startPlayback()
def clearSequencer( self ):
for n in self.notesList:
self.csnd.loopDelete(n)
self.notesList = []
def getPlayState( self ):
return self.playState
def startPlayback( self ):
if not self.playState:
self.playbackTimeout = gobject.timeout_add( int(60000/self.tempo/12), self.handleClock )
self.handleClock()
self.playState = 1
def stopPlayback( self ):
if self.playbackTimeout != None:
gobject.source_remove( self.playbackTimeout )
self.playbackTimeout = None
self.playState = 0
def recording( self, note ):
if self.startLooking:
self.sequencer = []
self.pitchs = []
self.recordState = 1
self.startLooking = 0
self.recordButtonState(True)
self.startPoint = self.csnd.loopGetTick()
if self.startPoint == 0:
self.startPoint = self.beat * Config.TICKS_PER_BEAT - 1
if self.recordState:
self.pitchs.append( note.pitch )
self.sequencer.append( note )
def quantize( self, onset ):
if ( onset % 3 ) == 0:
return onset
elif ( onset % 3 ) == 1:
return ( onset // 3 ) * 3
elif ( onset % 3 ) == 2:
return ( ( onset // 3 ) + 1 ) * 3
def adjustDuration( self, pitch, onset ):
if pitch in self.pitchs:
offset = self.csnd.loopGetTick()
for note in self.sequencer:
if note.pitch == pitch and note.onset == onset:
if offset > note.onset:
note.duration = ( offset - note.onset ) + 4
else:
note.duration = ( (offset+(self.beat*Config.TICKS_PER_BEAT)) - note.onset ) + 4
note.onset = self.quantize( note.onset )
n = Note(0, note.trackId, self.id, note)
self.notesList.append(n)
self.id = self.id + 1
self.csnd.loopPlay(n,1) #add as active
self.pitchs.remove( pitch )
def adjustSequencerVolume(self, volume):
self.volume = volume
for n in self.notesList:
self.csnd.loopUpdate(n, PARAMETER.AMPLITUDE, n.cs.amplitude*self.volume, 1)
def handleClock( self ):
currentTick = self.csnd.loopGetTick()
t = currentTick / 3
if self.tick != t:
self.tick = t
if self.startLooking:
if self.tick in self.beats:
self.recordButtonState(True)
if self.tick in self.upBeats:
self.recordButtonState(False)
if self.recordState:
if currentTick < self.startPoint:
self.checkOk = 1
if currentTick >= self.startPoint and self.checkOk:
self.checkOk = 0
self.recordState = 0
self.recordButtonState(False)
return True
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