piccal/ChordTester.py

import types
import time

class ChordTester:
    def __init__( self, cfg, api ):
        self.api = api
        self.cfg = types.SimpleNamespace(**cfg.ChordTester)

        self.nextMs       = 0
        self.isStartedFl  = False
        self.curNoteCnt   = 0
        self.curRepeatCnt = 0
        self.isPlayingFl  = False


    def start( self ):
        self.api.set_hold_duty_all( self.cfg.holdDuty )
        if self.cfg.useVelTableFl:
            self.api.set_vel_table_all( self.cfg.pitchL )
        self.curNoteCnt = 0
        self.curRepeatCnt = 0
        self.isStartedFl = True

    def stop( self ):
        self.isStartedFl = False
        self.api.all_notes_off()
        


    def tick( self, ms ):

        if self.isStartedFl and ms >= self.nextMs:

            if self.isPlayingFl:

                # turn notes off
                for i in range(0,self.curNoteCnt+1):
                    self.api.note_off( self.cfg.pitchL[i])
                    time.sleep( 0.01 )

                # repeat or advance the chord note count
                self.curRepeatCnt += 1
                if self.curRepeatCnt >= self.cfg.repeatCnt:
                    self.curRepeatCnt = 0
                    self.curNoteCnt  += 1
                    if self.curNoteCnt >= len(self.cfg.pitchL):
                        self.isStartedFl = False
                        self.curNoteCnt = 0
                        
                self.isPlayingFl = False
                self.nextMs      = ms + self.cfg.pauseMs
                
            else:
                for i in range(0,self.curNoteCnt+1):
                    if self.cfg.useVelTableFl:
                        self.api.note_on_vel(self.cfg.pitchL[i], 45 )
                    else:
                        self.api.note_on_us(self.cfg.pitchL[i], self.cfg.atkUsec)
                    time.sleep( 0.02 )
                    
                self.nextMs = ms + self.cfg.durMs
                self.isPlayingFl = True