# Example 3 - Using our own performance loop

# Author: Steven Yi <stevenyi@gmail.com>

# 2013.10.28

#

# In this example, we use a while loop to perform Csound one audio block at a time.

# This technique is important to know as it will allow us to do further processing

# safely at block boundaries. We will explore the technique further in later examples.

import csnd6

# Our Orchestra for our project

orc = """

sr=44100

ksmps=32

nchnls=2

0dbfs=1

instr 1

aout vco2 0.5, 440

outs aout, aout

endin"""

# Our Score for our project

sco = "i1 0 1"

c = csnd6.Csound() # create an instance of Csound

c.SetOption("-odac") # Set option for Csound

c.CompileOrc(orc) # Compile Orchestra from String

c.ReadScore(sco) # Read in Score from String

c.Start() # When compiling from strings, this call is necessary before doing any performing

# The following is our main performance loop. We will perform one block of sound at a time

# and continue to do so while it returns 0, which signifies to keep processing. We will

# explore this loop technique in further examples.

while (c.PerformKsmps() == 0):

pass

c.Stop()