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#!/usr/bin/env python
# encoding: utf-8
"""
This script uses a matrix to store STAGES number of short samples
always renewed by recording a source sound with MatrixRecLoop.
A metronomic random playback choose a sample to play between the
first and RND_LEVEL.
"""
from pyo import *
s = Server(duplex=0).boot()
# Length of grains in samples
SIZE = 8192
# Number of successive grains kept in memory
STAGES = 32
# Amount of granularity. Lower value will repeat first grains in memory
RND_LEVEL = 4 # 1 -> STAGES
# percentage of grains that pass
GATE = 100
period = SIZE / s.getSamplingRate()
env = CosTable([(0, 0), (300, 1), (1000, 0.4), (8191, 0)])
matrix = NewMatrix(SIZE, STAGES)
src = SfPlayer("../snds/baseballmajeur_m.aif", speed=1, loop=True, mul=0.3)
m_rec = MatrixRecLoop(src, matrix)
metro = Metro(time=period / 2, poly=2).play()
trig = Percent(metro, GATE)
x = TrigLinseg(trig, [(0, 0), (period, 1)])
y = TrigRandInt(trig, max=RND_LEVEL, mul=1.0 / STAGES)
amp = TrigEnv(trig, table=env, dur=period)
out = MatrixPointer(matrix, x, y, amp).out()
s.gui(locals())
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