#!/usr/bin/env python

# import required modules:
#  note that the path to the module htkmfc must be included in the
#  PYTHONPATH environment variable.
#
import os
import sys
import numpy as np

# define binary read mode parameters
#
MODE_READ_BINARY = "rb"
SAMPLE_SIZE = sys.getsizeof(np.int16)

# main: this is the main function of this Python
#
def main(argv):

    # open the file for binary I/O
    #
    fp = open(argv[1], MODE_READ_BINARY)

    # demonstrate seek in Python
    #
    fp.seek(0, os.SEEK_SET)

    # read 10 short integers: do this by reading the correct number of bytes
    #
    num_samps = int(10)
    data = fp.read(num_samps * SAMPLE_SIZE)

    # close the file
    #
    fp.close()

    # convert the binary data to floats
    #
    buf_f = np.frombuffer(data, dtype = "short",
                          count = num_samps).astype(np.float64)

    # convert the binary data to short ints
    #
    buf_s = np.frombuffer(data, dtype = "short",
                          count = num_samps).astype(np.int16)
    # print the values
    #
    for i in range(0,len(buf_s)):
        print("buf[%d] = short: %d, float: %f" % (i, buf_s[i], buf_f[i]))

# begin gracefully
#
if __name__ == "__main__":
    main(sys.argv[0:])

#
# end of file