aggregate_entropy_stats.py

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#!/usr/bin/env python3

## Copyright (c) 2017, Alliance for Open Media. All rights reserved.

##

## This source code is subject to the terms of the BSD 2 Clause License and

## the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License

## was not distributed with this source code in the LICENSE file, you can

## obtain it at www.aomedia.org/license/software. If the Alliance for Open

## Media Patent License 1.0 was not distributed with this source code in the

## PATENTS file, you can obtain it at www.aomedia.org/license/patent.

##

"""Aggregate multiple entropy stats output which is written in 32-bit int.

python ./aggregate_entropy_stats.py [dir of stats files] [keyword of filenames]

 [filename of final stats]

"""

__author__ = "yuec@google.com"

import os

import sys

import numpy as np

def main():

    dir = sys.argv[1]

    sum = []

    for fn in os.listdir(dir):

        if sys.argv[2] in fn:

            stats = np.fromfile(dir + fn, dtype=np.int32)

            if len(sum) == 0:

                sum = stats

            else:

                sum = np.add(sum, stats)

    if len(sum) == 0:

        print("No stats file is found. Double-check directory and keyword?")

    else:

        sum.tofile(dir+sys.argv[3])

if __name__ == '__main__':

    main()