Fixed quality tests after PyAuto test purge.

chrome/test/data/webrtc/wsh/webrtc_write_wsh.py

+# Copyright (c) 2012 The Chromium Authors. All rights reserved.

[kjellander_chromium, 2014/04/07 14:59:58]

I assume this is an exact copy of the file that was removed?

[phoglund_chromium, 2014/04/08 09:29:00]

Yes.

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+#
+# This module is handler for incoming data to the pywebsocket standalone server
+# (source is in http://code.google.com/p/pywebsocket/source/browse/trunk/src/).
+# It follows the conventions of the pywebsocket server and in our case receives
+# and stores incoming frames to disk.
+
+import Queue
+import os
+import sys
+import threading
+
+_NUMBER_OF_WRITER_THREADS = 10
+
+_HOME_ENV_NAME = 'HOMEPATH' if 'win32' == sys.platform else 'HOME'
+_WORKING_DIR = os.path.join(os.environ[_HOME_ENV_NAME], 'webrtc_video_quality')

[kjellander_chromium, 2014/04/07 14:59:58]

It would be great if you could create a temporary working dir to use instead,
but that can be done in a separate CL.

[phoglund_chromium, 2014/04/08 09:29:00]

I completely agree.

+
+# I couldn't think of other way to handle this but through a global variable
+g_frame_number_counter = 0
+g_frames_queue = Queue.Queue()
+
+
+def web_socket_do_extra_handshake(request):
+  pass  # Always accept.
+
+
+def web_socket_transfer_data(request):
+  while True:
+    data = request.ws_stream.receive_message()
+    if data is None:
+      return
+
+    # We assume we will receive only frames, i.e. binary data
+    global g_frame_number_counter
+    frame_number = str(g_frame_number_counter)
+    g_frame_number_counter += 1
+    g_frames_queue.put((frame_number, data))
+
+
+class FrameWriterThread(threading.Thread):
+  """Writes received frames to disk.
+
+  The frames are named in the format frame_xxxx, where xxxx is the 0-padded
+  frame number. The frames and their numbers are obtained from a synchronized
+  queue. The frames are written in the directory specified by _WORKING_DIR.
+  """
+  def __init__(self, queue):
+    threading.Thread.__init__(self)
+    self._queue = queue
+
+  def run(self):
+    while True:
+      frame_number, frame_data = self._queue.get()
+      file_name = 'frame_' + frame_number.zfill(4)
+      file_name = os.path.join(_WORKING_DIR, file_name)
+      frame = open(file_name, "wb")
+      frame.write(frame_data)
+      frame.close()
+      self._queue.task_done()
+
+
+def start_threads():
+  for i in range(_NUMBER_OF_WRITER_THREADS):
+    t = FrameWriterThread(g_frames_queue)
+    t.setDaemon(True)
+    t.start()
+  g_frames_queue.join()
+
+
+# This handler's entire code is imported as 'it is' and then incorporated in the
+# code of the standalone pywebsocket server. If we put this start_threads() call
+# inside a if __name__ == '__main__' clause it wouldn't run this code at all
+# (tested).
+start_threads()