# Bruce Maxwell
# January 2012
# Program that generates note entries for a simple instrument
# These are randomly selected samples played at uniformly random times

import sys
import random


# Generates N granules, all the same length, at uniformly random times
# Each granule is a random sample from the source table
# The length of each granule is a given
# The total number of granules is a given
# The playback ratio is a given
# The overall amplitude is a given

def main(argv):
	
    if len(argv) < 8:
        print 'Usage: python %s <instr> <# notes> <total time (s)> <duration> <min octave> <max octave> <amp>' % (argv[0])
        exit()

    instr = int(argv[1]) # instrument

    N = int(argv[2]) # number of notes
    
    time = float(argv[3]) # total time
    
    duration = float(argv[4])
                     
    minoctave = int(argv[5])

    maxoctave = int(argv[6])

    iamp = float( argv[7] )

    iamp = iamp / ( duration * N / time )

    # loop over the number of notes
    for i in range(N):
        t = random.random()*(time - duration) # uniformly pick start time
        pitch = '%d.%02d' % (random.randint( minoctave, maxoctave ), random.randint( 0, 12 ) )
        s = 'i  %6d %6.2f %6.2f %10.2f %s' % (instr, t, duration, iamp, pitch)
        print s


if __name__ == "__main__":
	main(sys.argv)