float2mozzi.py

 
 
import sys, array, os, textwrap, math
 
    if len(sys.argv) != 5:
        print 'Usage: float2mozzi.py <infile outfile tablename samplerate>'
        sys.exit(1)
 
[infile, outfile, tablename, samplerate] = sys.argv[1:]
 
def float2mozzi(infile, outfile, tablename,samplerate):
    fin = open(os.path.expanduser(infile), "rb")
    print "opened " + infile
    valuesetad = os.path.getsize(os.path.expanduser(infile))/4 
 
    
    valuesfromfile = array.array('f')
    try:
        valuesfromfile.fromfile(fin,valuesetad)
    finally:
        fin.close()
 
    values=valuesfromfile.tolist()
 
    fout = open(os.path.expanduser(outfile), "w")
    fout.write('#ifndef ' + tablename + '_H_' + '\n')
    fout.write('#define ' + tablename + '_H_' + '\n \n')
    fout.write('#include <Arduino.h>'+'\n')
    fout.write('#include "mozzi_pgmspace.h"'+'\n \n')
    fout.write('#define ' + tablename + '_NUM_CELLS '+ str(len(values))+'\n')
    fout.write('#define ' + tablename + '_SAMPLERATE '+ str(samplerate)+'\n \n')
    outstring = 'CONSTTABLE_STORAGE(int8_t) ' + tablename + '_DATA [] = {'
    try:
        for num in values:
            outstring += str(math.trunc((num*256)+0.5)) + ", "
 
    finally:
        outstring +=  "};"
        outstring = textwrap.fill(outstring, 80)
        fout.write(outstring)
        fout.write('\n \n #endif /* ' + tablename + '_H_ */\n')
        fout.close()
        print "wrote " + outfile
 
float2mozzi(infile, outfile, tablename, samplerate)