Add audio_e2e_test to LinuxLargeTests.

Ensure pulseaudio is running on the bot.

BUG=none
TEST=audio_e2e_test
Review URL: https://webrtc-codereview.appspot.com/646004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@2392 4adac7df-926f-26a2-2b94-8c16560cd09d

tools/continuous_build/build_internal/scripts/webrtc_buildbot/utils.py

@@ -594,6 +594,7 @@ class WebRTCLinuxFactory(WebRTCFactory):
     self.compile_for_memory_tooling = compile_for_memory_tooling
     self.release = release
 
+    self._AddStartPulseAudioStep()
     self.AddSmartCleanStep()
     self.AddGclientSyncStep()
 
@@ -760,10 +761,6 @@ class WebRTCLinuxFactory(WebRTCFactory):
       cmd = MakeCommandToRunTestInXvfb(['out/Debug/video_render_module_test'])
       self.AddCommonTestRunStep(test=test, cmd=cmd)
     elif test == 'voe_auto_test':
-      # Restart pulseaudio first to reduce risk of pulseaudio flakiness.
-      self.AddCommonStep(['/etc/init.d/pulseaudio', 'restart'],
-                         'restart pulseaudio')
-
       # Set up the regular test run.
       binary = 'out/Debug/voe_auto_test'
       cmd = [binary, '--automated', '--gtest_filter=-RtpFuzzTest.*']
@@ -774,9 +771,32 @@ class WebRTCLinuxFactory(WebRTCFactory):
       cmd = MEMCHECK_CMD + [binary, ' ++automated',
                             '++gtest_filter=RtpFuzzTest*']
       self.AddCommonFyiStep(cmd=cmd, descriptor='voe_auto_test (fuzz tests)')
+    elif test == 'audio_e2e_test':
+      output_file = '/tmp/e2e_audio_out.pcm'
+      cmd = ('python tools/e2e_quality/audio/run_audio_test.py '
+             '--input=/home/webrtc-cb/data/e2e_audio_in.pcm '
+             '--output=%s --codec=L16 '
+             '--compare="/home/webrtc-cb/bin/compare-audio +16000 +wb" '
+             '--regexp="(\d\.\d{3})"' % output_file)
+      self.AddCommonStep(cmd, descriptor=test)
+      # Ensure anyone can read the output file, in case of problems.
+      cmd = 'chmod 644 %s' % output_file
+      self.AddCommonStep(cmd, descriptor='Make output file readable')
+      # TODO(andrew): how do we get the metric output to the dashboard?
     else:
       self.AddCommonTestRunStep(test)
 
+  def _AddStartPulseAudioStep(self):
+    # Ensure a PulseAudio daemon is running. The options here are taken from
+    # /etc/init.d/pulseaudio, with three exceptions:
+    #   1. --system has been removed; this requires root privileges.
+    #   2. --log-target=syslog has been removed in order to get logs on stdout
+    #      for diagnosing problems.
+    #   3. -vvvv has been added for fully verbose logs.
+    cmd = ('/usr/bin/pulseaudio --start --daemonize --high-priority '
+           '--disallow-module-loading=1 -vvvv')
+    self.AddCommonStep(cmd=cmd, descriptor='Start PulseAudio')
+
 class WebRTCMacFactory(WebRTCFactory):
   """Sets up the Mac build, both for make and xcode."""