APM QA refactoring: render stream support, echo path simulation, new export engine

webrtc/modules/audio_processing/test/py_quality_assessment/apm_quality_assessment.sh

 #!/bin/bash
 # 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.
 
 # Path to the POLQA tool.
@@ skipping 14 matching lines @@
   export AECHEN_IR_DATABASE_PATH='/var/opt/AIR_1_4'
 fi
 if [ -d "${AECHEN_IR_DATABASE_PATH}" ]; then
   echo "AIR database found in ${AECHEN_IR_DATABASE_PATH}"
 else
   echo "AIR database not found in ${AECHEN_IR_DATABASE_PATH}"
   exit 1
 fi
 
 # Customize probing signals, test data generators and scores if needed.
-PROBING_SIGNALS=(probing_signals/*.wav)
+CAPTURE_SIGNALS=(probing_signals/*.wav)
 TEST_DATA_GENERATORS=( \
     "identity" \
     "white_noise" \
-    "environmental_noise" \
-    "reverberation" \
+    # "environmental_noise" \
+    # "reverberation" \
 )
 SCORES=( \
-    "polqa" \
-    "audio_level" \
+    # "polqa" \
+    "audio_level_peak" \
+    "audio_level_mean" \
 )
 OUTPUT_PATH=output
 
 # Generate standard APM config files.
 chmod +x apm_quality_assessment_gencfgs.py
 ./apm_quality_assessment_gencfgs.py
 
 # Customize APM configurations if needed.
 APM_CONFIGS=(apm_configs/*.json)
 
 # Add output path if missing.
 if [ ! -d ${OUTPUT_PATH} ]; then
   mkdir ${OUTPUT_PATH}
 fi
 
 # Start one process for each "probing signal"-"test data source" pair.
 chmod +x apm_quality_assessment.py
-for probing_signal_filepath in "${PROBING_SIGNALS[@]}" ; do
-  probing_signal_name="$(basename $probing_signal_filepath)"
+for capture_signal_filepath in "${CAPTURE_SIGNALS[@]}" ; do
+  probing_signal_name="$(basename $capture_signal_filepath)"
   probing_signal_name="${probing_signal_name%.*}"
   for test_data_gen_name in "${TEST_DATA_GENERATORS[@]}" ; do
     LOG_FILE="${OUTPUT_PATH}/apm_qa-${probing_signal_name}-"`
              `"${test_data_gen_name}.log"
     echo "Starting ${probing_signal_name} ${test_data_gen_name} "`
          `"(see ${LOG_FILE})"
     ./apm_quality_assessment.py \
         --polqa_path ${POLQA_PATH}\
         --air_db_path ${AECHEN_IR_DATABASE_PATH}\
-        -i ${probing_signal_filepath} \
+        -i ${capture_signal_filepath} \
         -o ${OUTPUT_PATH} \
         -t ${test_data_gen_name} \
         -c "${APM_CONFIGS[@]}" \
         -e "${SCORES[@]}" > $LOG_FILE 2>&1 &
   done
 done
 
-# Join.
+# Join Python processes running apm_quality_assessment.py.
 wait
 
 # Export results.
 chmod +x ./apm_quality_assessment_export.py
 ./apm_quality_assessment_export.py -o ${OUTPUT_PATH}
 
 # Show results in the browser.
 RESULTS_FILE="$(realpath ${OUTPUT_PATH}/results.html)"
 sensible-browser "file://${RESULTS_FILE}" > /dev/null 2>&1 &