Reland "C++ porting of the initial python script for conversational speech generation."

webrtc/modules/audio_processing/test/py_conversational_speech/generate_conversational_tracks.py

-#!/usr/bin/env python
-# Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
-#
-# Use of this source code is governed by a BSD-style license
-# that can be found in the LICENSE file in the root of the source
-# tree. An additional intellectual property rights grant can be found
-# in the file PATENTS.  All contributing project authors may
-# be found in the AUTHORS file in the root of the source tree.
-
-"""Generate multiple-end audio tracks to simulate conversational
-   speech with two or more participants.
-
-Usage: generate_conversational_tracks.py
-          -i path/to/source/audiotracks
-          -t path/to/timing_file.txt
-          -o output/path
-"""
-
-import argparse
-import logging
-import sys
-
-def _InstanceArgumentsParser():
-  parser = argparse.ArgumentParser(description=(
-      'Generate multiple-end audio tracks to simulate conversational speech '
-      'with two or more participants.'))
-
-  parser.add_argument('-i', '--input_tracks_path', required=True,
-                      help='directory containing the speech turn wav files')
-
-  parser.add_argument('-t', '--timing_file', required=True,
-                      help='path to the timing text file')
-
-  parser.add_argument('-o', '--output_dir', required=False,
-                      help=('base path to the output directory in which the '
-                            'output wav files are saved'),
-                      default='output')
-
-  return parser
-
-
-def main():
-  # TODO(alessiob): level = logging.INFO once debugged.
-  logging.basicConfig(level=logging.DEBUG)
-
-  parser = _InstanceArgumentsParser()
-  args = parser.parse_args()
-
-  # TODO(alessiob): pass the arguments to the app controller.
-
-  # TODO(alessiob): remove when comment above addressed.
-  logging.debug(args)
-
-  sys.exit(0)
-
-
-if __name__ == '__main__':
-  main()