#!/usr/bin/env python
#
# Copyright 2016 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Script functions as a web app and wrapper for the cras_router program."""
import re
import subprocess
import logging
import cherrypy
# Node Format: [Stable_Id, ID, Vol, Plugged, L/R_swapped, Time, Type, Name]
ID_INDEX = 1
PLUGGED_INDEX = 3
TYPE_INDEX = 6
NAME_INDEX = 7
def get_plugged_nodes(plugged_nodes, lines, is_input):
start_str = 'Input Nodes:' if is_input else 'Output Nodes:'
end_str = 'Attached clients:' if is_input else 'Input Devices:'
for i in range(lines.index(start_str) + 2,
lines.index(end_str)):
node = filter(None, re.split(r'\s+|\*+', lines[i]))
# check for nodes that are plugged nodes and loopback
if node[PLUGGED_INDEX] == 'yes' and node[TYPE_INDEX][:4] != 'POST':
key = node[TYPE_INDEX] + ' ' + node[NAME_INDEX]
plugged_nodes[key] = node[ID_INDEX]
class CrasRouterTest(object):
"""Cherrypy class that builds and runs the HTML for audio testing tool."""
@cherrypy.expose
def index(self):
"""Builds up and displays the html for the audio testing tool.
Returns:
html that was built up based on plugged audio devices.
"""
# Stop program if currently being run.
if 'process' in cherrypy.session:
print 'Existing process'
# If return code is None process is still running
if cherrypy.session['process'].poll() is None:
print 'Killing existing process'
cherrypy.session['process'].kill()
else:
print 'Process already finished'
html = """
Audio Test
Audio Closed Loop Test
"""
javascript = """
"""
html += javascript
return html
@cherrypy.expose
def start_test(self, input_type, output_type, input_file='',
output_file='', rate=48000):
"""Capture audio from the input_type and plays it back to the output_type.
Args:
input_type: Node id for the selected input or 'file' for files
output_type: Node id for the selected output or 'file' for files
input_file: Path of the input if 'file' is input type
output_file: Path of the output if 'file' is output type
rate: Sample rate for the test.
Returns:
html for the tesing in progress page.
"""
print 'Beginning test'
if input_type == 'file' or output_type == 'file':
command = ['cras_test_client']
else:
command = ['cras_router']
if input_type == 'file':
command.append('--playback_file')
command.append(str(input_file))
else:
set_input = ['cras_test_client', '--select_input', str(input_type)]
if subprocess.check_call(set_input):
print 'Error setting input'
if output_type == 'file':
command.append('--capture_file')
command.append(str(output_file))
else:
set_output = ['cras_test_client', '--select_output', str(output_type)]
if subprocess.check_call(set_output):
print 'Error setting output'
command.append('--rate')
command.append(str(rate))
print 'Running commmand: ' + str(command)
p = subprocess.Popen(command)
cherrypy.session['process'] = p
return """
Running test