Add audio quality factory test, and audio_helper as a common audio
utility code.
BUG=chrome-os-partner:6849
TEST=Run factory_AudioQulity test, send 'LOOP_1' command to port 8888 on
device. Device should respond by start audio loop.
Change-Id: I677c41eeef9e7a9fad9a01b35867c1ab71c7329d
Reviewed-on: https://gerrit.chromium.org/gerrit/11724
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Commit-Ready: Hsinyu Chao <hychao@chromium.org>
Tested-by: Hsinyu Chao <hychao@chromium.org>
diff --git a/client/cros/audio/audio_helper.py b/client/cros/audio/audio_helper.py
new file mode 100644
index 0000000..79a8a02
--- /dev/null
+++ b/client/cros/audio/audio_helper.py
@@ -0,0 +1,75 @@
+#!/usr/bin/python
+# Copyright (c) 2012 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.
+
+import logging
+import os
+
+from autotest_lib.client.bin import utils
+from autotest_lib.client.common_lib import error
+
+LD_LIBRARY_PATH = 'LD_LIBRARY_PATH'
+
+class AudioHelper(object):
+ '''
+ A helper class contains audio related utility functions.
+ '''
+ def __init__(self, test):
+ self._test = test
+
+ def setup_deps(self, deps):
+ '''
+ Sets up audio related dependencies.
+ '''
+ for dep in deps:
+ if dep == 'test_tones':
+ dep_dir = os.path.join(self._test.autodir, 'deps', dep)
+ self._test.job.install_pkg(dep, 'dep', dep_dir)
+ self.test_tones_path = os.path.join(dep_dir, 'src', dep)
+ elif dep == 'audioloop':
+ dep_dir = os.path.join(self._test.autodir, 'deps', dep)
+ self._test.job.install_pkg(dep, 'dep', dep_dir)
+ self.audioloop_path = os.path.join(dep_dir, 'src',
+ 'looptest')
+ elif dep == 'sox':
+ dep_dir = os.path.join(self._test.autodir, 'deps', dep)
+ self._test.job.install_pkg(dep, 'dep', dep_dir)
+ self.sox_path = os.path.join(dep_dir, 'bin', dep)
+ self.sox_lib_path = os.path.join(dep_dir, 'lib')
+ if os.environ.has_key(LD_LIBRARY_PATH):
+ paths = os.environ[LD_LIBRARY_PATH].split(':')
+ if not self.sox_lib_path in paths:
+ paths.append(self.sox_lib_path)
+ os.environ[LD_LIBRARY_PATH] = ':'.join(paths)
+ else:
+ os.environ[LD_LIBRARY_PATH] = self.sox_lib_path
+
+ def cleanup_deps(self, deps):
+ '''
+ Cleans up environments which has been setup for dependencies.
+ '''
+ for dep in deps:
+ if dep == 'sox':
+ if (os.environ.has_key(LD_LIBRARY_PATH)
+ and hasattr(self, 'sox_lib_path')):
+ paths = filter(lambda x: x != self.sox_lib_path,
+ os.environ[LD_LIBRARY_PATH].split(':'))
+ os.environ[LD_LIBRARY_PATH] = ':'.join(paths)
+
+ def set_mixer_controls(self, mixer_settings={}, card='0'):
+ '''
+ Sets all mixer controls listed in the mixer settings on card.
+ '''
+ logging.info('Setting mixer control values on %s' % card)
+ for item in mixer_settings:
+ logging.info('Setting %s to %s on card %s' %
+ (item['name'], item['value'], card))
+ cmd = 'amixer -c %s cset name=%s %s'
+ cmd = cmd % (card, item['name'], item['value'])
+ try:
+ utils.system(cmd)
+ except error.CmdError:
+ # A card is allowed not to support all the controls, so don't
+ # fail the test here if we get an error.
+ logging.info('amixer command failed: %s' % cmd)