#!/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,.4), (8191,0)])
matrix = NewMatrix(SIZE, STAGES)

src = SfPlayer('../snds/baseballmajeur_m.aif', speed=1, loop=True, mul=.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./STAGES)
amp = TrigEnv(trig, table=env, dur=period)

out = MatrixPointer(matrix, x, y, amp).out()

s.gui(locals())