audio/test/low_bandwidth_audio_test.py - src - Git at Google

 #!/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.

 """
 This script is the wrapper that runs the low-bandwidth audio test.

 After running the test, post-process steps for calculating audio quality of the
 output files will be performed.
 """

 import argparse
 import collections
 import logging
 import os
 import re
 import shutil
 import subprocess
 import sys


 SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
 SRC_DIR = os.path.normpath(os.path.join(SCRIPT_DIR, os.pardir, os.pardir))


 def _LogCommand(command):
   logging.info('Running %r', command)
   return command


 def _ParseArgs():
   parser = argparse.ArgumentParser(description='Run low-bandwidth audio tests.')
   parser.add_argument('build_dir',
       help='Path to the build directory (e.g. out/Release).')
   parser.add_argument('--remove', action='store_true',
       help='Remove output audio files after testing.')
   parser.add_argument('--android', action='store_true',
       help='Perform the test on a connected Android device instead.')
   parser.add_argument('--adb-path', help='Path to adb binary.', default='adb')
   args = parser.parse_args()
   return args


 def _GetPlatform():
   if sys.platform == 'win32':
     return 'win'
   elif sys.platform == 'darwin':
     return 'mac'
   elif sys.platform.startswith('linux'):
     return 'linux'


 def _DownloadTools():
   tools_dir = os.path.join(SRC_DIR, 'tools_webrtc')
   toolchain_dir = os.path.join(tools_dir, 'audio_quality')

   # Download PESQ and POLQA.
   download_script = os.path.join(tools_dir, 'download_tools.py')
   command = [sys.executable, download_script, toolchain_dir]
   subprocess.check_call(_LogCommand(command))

   pesq_path = os.path.join(toolchain_dir, _GetPlatform(), 'pesq')
   polqa_path = os.path.join(toolchain_dir, _GetPlatform(), 'PolqaOem64')
   return pesq_path, polqa_path


 def ExtractTestRuns(lines, echo=False):
   """Extracts information about tests from the output of a test runner.

   Produces tuples (android_device, test_name, reference_file, degraded_file).
   """
   for line in lines:
     if echo:
       sys.stdout.write(line)

     # Output from Android has a prefix with the device name.
     android_prefix_re = r'(?:I\b.+\brun_tests_on_device\((.+?)\)\s*)?'
     test_re = r'^' + android_prefix_re + r'TEST (\w+) ([^ ]+?) ([^ ]+?)\s*$'

     match = re.search(test_re, line)
     if match:
       yield match.groups()


 def _GetFile(file_path, out_dir, move=False,
              android=False, adb_prefix=('adb',)):
   out_file_name = os.path.basename(file_path)
   out_file_path = os.path.join(out_dir, out_file_name)

   if android:
     # Pull the file from the connected Android device.
     adb_command = adb_prefix + ('pull', file_path, out_dir)
     subprocess.check_call(_LogCommand(adb_command))
     if move:
       # Remove that file.
       adb_command = adb_prefix + ('shell', 'rm', file_path)
       subprocess.check_call(_LogCommand(adb_command))
   elif os.path.abspath(file_path) != os.path.abspath(out_file_path):
     if move:
       shutil.move(file_path, out_file_path)
     else:
       shutil.copy(file_path, out_file_path)

   return out_file_path


 def _RunPesq(executable_path, reference_file, degraded_file,
              sample_rate_hz=16000):
   directory = os.path.dirname(reference_file)
   assert os.path.dirname(degraded_file) == directory

   # Analyze audio.
   command = [executable_path, '+%d' % sample_rate_hz,
              os.path.basename(reference_file),
              os.path.basename(degraded_file)]
   # Need to provide paths in the current directory due to a bug in PESQ:
   # On Mac, for some 'path/to/file.wav', if 'file.wav' is longer than
   # 'path/to', PESQ crashes.
   out = subprocess.check_output(_LogCommand(command),
                                 cwd=directory, stderr=subprocess.STDOUT)

   # Find the scores in stdout of PESQ.
   match = re.search(
       r'Prediction \(Raw MOS, MOS-LQO\):\s+=\s+([\d.]+)\s+([\d.]+)', out)
   if match:
     raw_mos, _ = match.groups()

     return {'pesq_mos': (raw_mos, 'score')}
   else:
     logging.error('PESQ: %s', out.splitlines()[-1])
     return {}


 def _RunPolqa(executable_path, reference_file, degraded_file):
   # Analyze audio.
   command = [executable_path, '-q', '-LC', 'NB',
              '-Ref', reference_file, '-Test', degraded_file]
   try:
     process = subprocess.Popen(_LogCommand(command),
                                stdout=subprocess.PIPE, stderr=subprocess.PIPE)
   except OSError as e:
     if e.errno == os.errno.ENOENT:
       logging.warning('POLQA executable missing, skipping test.')
       return {}
     else:
       raise
   out, err = process.communicate()

   # Find the scores in stdout of POLQA.
   match = re.search(r'\bMOS-LQO:\s+([\d.]+)', out)

   if process.returncode != 0 or not match:
     if process.returncode == 2:
       logging.warning('%s (2)', err.strip())
       logging.warning('POLQA license error, skipping test.')
     else:
       logging.error('%s (%d)', err.strip(), process.returncode)
     return {}

   mos_lqo, = match.groups()
   return {'polqa_mos_lqo': (mos_lqo, 'score')}


 Analyzer = collections.namedtuple('Analyzer', ['func', 'executable',
                                                'sample_rate_hz'])


 def main():
   # pylint: disable=W0101
   logging.basicConfig(level=logging.INFO)

   args = _ParseArgs()

   pesq_path, polqa_path = _DownloadTools()

   out_dir = os.path.join(args.build_dir, '..')
   if args.android:
     test_command = [os.path.join(args.build_dir, 'bin',
                                  'run_low_bandwidth_audio_test'), '-v']
   else:
     test_command = [os.path.join(args.build_dir, 'low_bandwidth_audio_test')]

   analyzers = [Analyzer(_RunPesq, pesq_path, 16000)]
   # Check if POLQA can run at all, or skip the 48 kHz tests entirely.
   example_path = os.path.join(SRC_DIR, 'resources',
                               'voice_engine', 'audio_tiny48.wav')
   if _RunPolqa(polqa_path, example_path, example_path):
     analyzers.append(Analyzer(_RunPolqa, polqa_path, 48000))

   for analyzer in analyzers:
     # Start the test executable that produces audio files.
     test_process = subprocess.Popen(
         _LogCommand(test_command + ['--sample_rate_hz=%d' %
                                     analyzer.sample_rate_hz]),
         stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
     try:
       lines = iter(test_process.stdout.readline, '')
       for result in ExtractTestRuns(lines, echo=True):
         (android_device, test_name, reference_file, degraded_file) = result

         adb_prefix = (args.adb_path,)
         if android_device:
           adb_prefix += ('-s', android_device)

         reference_file = _GetFile(reference_file, out_dir,
                                   android=args.android, adb_prefix=adb_prefix)
         degraded_file = _GetFile(degraded_file, out_dir, move=True,
                                  android=args.android, adb_prefix=adb_prefix)

         analyzer_results = analyzer.func(analyzer.executable,
                                          reference_file, degraded_file)
         for metric, (value, units) in analyzer_results.items():
           # Output a result for the perf dashboard.
           print 'RESULT %s: %s= %s %s' % (metric, test_name, value, units)

         if args.remove:
           os.remove(reference_file)
           os.remove(degraded_file)
     finally:
       test_process.terminate()

   return test_process.wait()


 if __name__ == '__main__':
   sys.exit(main())
	#!/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.

	"""
	This script is the wrapper that runs the low-bandwidth audio test.

	After running the test, post-process steps for calculating audio quality of the
	output files will be performed.
	"""

	import argparse
	import collections
	import logging
	import os
	import re
	import shutil
	import subprocess
	import sys


	SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
	SRC_DIR = os.path.normpath(os.path.join(SCRIPT_DIR, os.pardir, os.pardir))


	def _LogCommand(command):
	logging.info('Running %r', command)
	return command


	def _ParseArgs():
	parser = argparse.ArgumentParser(description='Run low-bandwidth audio tests.')
	parser.add_argument('build_dir',
	help='Path to the build directory (e.g. out/Release).')
	parser.add_argument('--remove', action='store_true',
	help='Remove output audio files after testing.')
	parser.add_argument('--android', action='store_true',
	help='Perform the test on a connected Android device instead.')
	parser.add_argument('--adb-path', help='Path to adb binary.', default='adb')
	args = parser.parse_args()
	return args


	def _GetPlatform():
	if sys.platform == 'win32':
	return 'win'
	elif sys.platform == 'darwin':
	return 'mac'
	elif sys.platform.startswith('linux'):
	return 'linux'


	def _DownloadTools():
	tools_dir = os.path.join(SRC_DIR, 'tools_webrtc')
	toolchain_dir = os.path.join(tools_dir, 'audio_quality')

	# Download PESQ and POLQA.
	download_script = os.path.join(tools_dir, 'download_tools.py')
	command = [sys.executable, download_script, toolchain_dir]
	subprocess.check_call(_LogCommand(command))

	pesq_path = os.path.join(toolchain_dir, _GetPlatform(), 'pesq')
	polqa_path = os.path.join(toolchain_dir, _GetPlatform(), 'PolqaOem64')
	return pesq_path, polqa_path


	def ExtractTestRuns(lines, echo=False):
	"""Extracts information about tests from the output of a test runner.

	Produces tuples (android_device, test_name, reference_file, degraded_file).
	"""
	for line in lines:
	if echo:
	sys.stdout.write(line)

	# Output from Android has a prefix with the device name.
	android_prefix_re = r'(?:I\b.+\brun_tests_on_device\((.+?)\)\s*)?'
	test_re = r'^' + android_prefix_re + r'TEST (\w+) ([^ ]+?) ([^ ]+?)\s*$'

	match = re.search(test_re, line)
	if match:
	yield match.groups()


	def _GetFile(file_path, out_dir, move=False,
	android=False, adb_prefix=('adb',)):
	out_file_name = os.path.basename(file_path)
	out_file_path = os.path.join(out_dir, out_file_name)

	if android:
	# Pull the file from the connected Android device.
	adb_command = adb_prefix + ('pull', file_path, out_dir)
	subprocess.check_call(_LogCommand(adb_command))
	if move:
	# Remove that file.
	adb_command = adb_prefix + ('shell', 'rm', file_path)
	subprocess.check_call(_LogCommand(adb_command))
	elif os.path.abspath(file_path) != os.path.abspath(out_file_path):
	if move:
	shutil.move(file_path, out_file_path)
	else:
	shutil.copy(file_path, out_file_path)

	return out_file_path


	def _RunPesq(executable_path, reference_file, degraded_file,
	sample_rate_hz=16000):
	directory = os.path.dirname(reference_file)
	assert os.path.dirname(degraded_file) == directory

	# Analyze audio.
	command = [executable_path, '+%d' % sample_rate_hz,
	os.path.basename(reference_file),
	os.path.basename(degraded_file)]
	# Need to provide paths in the current directory due to a bug in PESQ:
	# On Mac, for some 'path/to/file.wav', if 'file.wav' is longer than
	# 'path/to', PESQ crashes.
	out = subprocess.check_output(_LogCommand(command),
	cwd=directory, stderr=subprocess.STDOUT)

	# Find the scores in stdout of PESQ.
	match = re.search(
	r'Prediction \(Raw MOS, MOS-LQO\):\s+=\s+([\d.]+)\s+([\d.]+)', out)
	if match:
	raw_mos, _ = match.groups()

	return {'pesq_mos': (raw_mos, 'score')}
	else:
	logging.error('PESQ: %s', out.splitlines()[-1])
	return {}


	def _RunPolqa(executable_path, reference_file, degraded_file):
	# Analyze audio.
	command = [executable_path, '-q', '-LC', 'NB',
	'-Ref', reference_file, '-Test', degraded_file]
	try:
	process = subprocess.Popen(_LogCommand(command),
	stdout=subprocess.PIPE, stderr=subprocess.PIPE)
	except OSError as e:
	if e.errno == os.errno.ENOENT:
	logging.warning('POLQA executable missing, skipping test.')
	return {}
	else:
	raise
	out, err = process.communicate()

	# Find the scores in stdout of POLQA.
	match = re.search(r'\bMOS-LQO:\s+([\d.]+)', out)

	if process.returncode != 0 or not match:
	if process.returncode == 2:
	logging.warning('%s (2)', err.strip())
	logging.warning('POLQA license error, skipping test.')
	else:
	logging.error('%s (%d)', err.strip(), process.returncode)
	return {}

	mos_lqo, = match.groups()
	return {'polqa_mos_lqo': (mos_lqo, 'score')}


	Analyzer = collections.namedtuple('Analyzer', ['func', 'executable',
	'sample_rate_hz'])


	def main():
	# pylint: disable=W0101
	logging.basicConfig(level=logging.INFO)

	args = _ParseArgs()

	pesq_path, polqa_path = _DownloadTools()

	out_dir = os.path.join(args.build_dir, '..')
	if args.android:
	test_command = [os.path.join(args.build_dir, 'bin',
	'run_low_bandwidth_audio_test'), '-v']
	else:
	test_command = [os.path.join(args.build_dir, 'low_bandwidth_audio_test')]

	analyzers = [Analyzer(_RunPesq, pesq_path, 16000)]
	# Check if POLQA can run at all, or skip the 48 kHz tests entirely.
	example_path = os.path.join(SRC_DIR, 'resources',
	'voice_engine', 'audio_tiny48.wav')
	if _RunPolqa(polqa_path, example_path, example_path):
	analyzers.append(Analyzer(_RunPolqa, polqa_path, 48000))

	for analyzer in analyzers:
	# Start the test executable that produces audio files.
	test_process = subprocess.Popen(
	_LogCommand(test_command + ['--sample_rate_hz=%d' %
	analyzer.sample_rate_hz]),
	stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
	try:
	lines = iter(test_process.stdout.readline, '')
	for result in ExtractTestRuns(lines, echo=True):
	(android_device, test_name, reference_file, degraded_file) = result

	adb_prefix = (args.adb_path,)
	if android_device:
	adb_prefix += ('-s', android_device)

	reference_file = _GetFile(reference_file, out_dir,
	android=args.android, adb_prefix=adb_prefix)
	degraded_file = _GetFile(degraded_file, out_dir, move=True,
	android=args.android, adb_prefix=adb_prefix)

	analyzer_results = analyzer.func(analyzer.executable,
	reference_file, degraded_file)
	for metric, (value, units) in analyzer_results.items():
	# Output a result for the perf dashboard.
	print 'RESULT %s: %s= %s %s' % (metric, test_name, value, units)

	if args.remove:
	os.remove(reference_file)
	os.remove(degraded_file)
	finally:
	test_process.terminate()

	return test_process.wait()


	if __name__ == '__main__':
	sys.exit(main())