| # 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 os |
| import re |
| import stat |
| import subprocess |
| |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.client.bin import test |
| |
| _SND_DEV_DIR = '/dev/snd/' |
| |
| class sound_infrastructure(test.test): |
| """ |
| Tests that the expected sound infrastructure is present. |
| |
| Check that at least one playback and capture device exists and that their |
| permissions are configured properly. |
| |
| """ |
| version = 2 |
| |
| def check_snd_dev_perms(self, filename): |
| desired_mode = (stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | |
| stat.S_IWGRP | stat.S_IFCHR) |
| st = os.stat(filename) |
| if (st.st_mode != desired_mode): |
| raise error.TestError("Incorrect permissions for %s" % filename) |
| |
| def check_sound_files(self): |
| patterns = {'^controlC(\d+)': False, |
| '^pcmC(\d+)D(\d+)p$': False, |
| '^pcmC(\d+)D(\d+)c$': False} |
| |
| filenames = os.listdir(_SND_DEV_DIR) |
| |
| for filename in filenames: |
| for pattern in patterns: |
| if re.match(pattern, filename): |
| patterns[pattern] = True |
| self.check_snd_dev_perms(_SND_DEV_DIR + filename) |
| |
| for pattern in patterns: |
| if not patterns[pattern]: |
| raise error.TestError("Missing device %s" % pattern) |
| |
| def check_aplay_list(self): |
| no_cards_pattern = '.*no soundcards found.*' |
| |
| aplay = subprocess.Popen(["aplay", "-l"], stderr=subprocess.PIPE) |
| aplay_list = aplay.communicate()[1] |
| if aplay.returncode or re.match(no_cards_pattern, aplay_list): |
| raise error.TestError("No playback devices found by aplay") |
| |
| arecord = subprocess.Popen(["arecord", "-l"], stderr=subprocess.PIPE) |
| arecord_list = arecord.communicate()[1] |
| if arecord.returncode or re.match(no_cards_pattern, arecord_list): |
| raise error.TestError("No playback devices found by arecord") |
| |
| def run_once(self): |
| self.check_sound_files() |
| self.check_aplay_list() |