Evaluation controller, evaluation score abstract class, and score data access.

webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/evaluation.py

+# 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.
+
+import logging
+
+class ApmModuleEvaluator(object):
+
+  def __init__(self):
+    pass
+
+  @classmethod
+  def run(cls, evaluation_score_workers, apm_output_filepath,
+          reference_input_filepath, output_path):

[aleloi2, 2017/03/02 17:42:23]

Why is it called reference_input? Since it's compared to output, why is it not
reference_output?

+    # Init.
+    scores = {}
+
+    for evaluation_score_worker in evaluation_score_workers:
+      logging.info('   computing <%s> score', evaluation_score_worker.NAME)
+      evaluation_score_worker.set_reference_signal_filepath(
+          reference_input_filepath)
+      evaluation_score_worker.set_tested_signal_filepath(
+          apm_output_filepath)
+
+      evaluation_score_worker.run(output_path)
+      scores[evaluation_score_worker.NAME] = evaluation_score_worker.score
+
+    return scores