add ffmpeg_tests into autotest. unfortunately for now the x86 binary is checked in

client/site_tests/audiovideo_FFMPEG/audiovideo_FFMPEG.py

+# Copyright (c) 2010 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 glob, logging, os, re, stat, time, urllib
+
+from autotest_lib.client.bin import test
+from autotest_lib.client.common_lib import error, utils
+
+class audiovideo_FFMPEG(test.test):
+    version = 1
+
+    def run_once(self):
+        """ Run FFMPEG performance test! """
+        # fetch all the test cases from file.
+        testcases = os.path.join(self.bindir, "testcases")
+        self.performance_results = {}
+        for line in open(testcases, "rt"):
+            # skip comment line and blank line
+            line = line.rstrip()
+            if len(line) == 0: continue
+            if line[0] == "#": continue
+            # run each test cases
+            testcase = line.split()
+            self.run_testcase(testcase)
+        self.write_perf_keyval(self.performance_results)
+
+
+    def run_testcase(self, testcase):
+        executable = os.path.join(self.bindir, "ffmpeg_tests.i686")
+        file_url = testcase[0]
+
+        # TODO(jiesun): if url is not local, grab it from internet.
+        if file_url.startswith("http"):
+            file_name = file_url.split('/')[-1]
+            file_path = os.path.join(self.bindir, file_name)
+            logging.info("Retrieving %s" % file_url)
+            urllib.urlretrieve(file_url, file_path)
+            logging.info("Done.")
+        else:
+            # if url is local, we assume it is in the same directory.
+            file_name = file_url;
+            file_path = os.path.join(self.bindir, file_name)
+
+        if not os.path.exists(file_path):
+            raise error.TestError("ffmpeg_tests: test media missing %s!"
+                                  % file_url)
+
+        command_line = ("LD_LIBRARY_PATH=/opt/google/chrome/ %s %s"
+                        % (executable, file_path))
+        logging.info("Running %s" % command_line)
+
+        cpu_usage, stdout = utils.get_cpu_percentage(
+                                 utils.system_output,
+                                 command_line,
+                                 retain_output=True)
+
+        # what's the fps we measures.
+        fps_pattern = re.search(r"FPS:\s+([\d\.]+)", stdout)
+        if fps_pattern is None:
+            raise error.TestFail("ffmpeg_tests failed to exit normally!")
+        fps = float(fps_pattern.group(1))
+        cpu_usage *= 100.0  # in percentage.
+        logging.info("Cpu Usage %s%%; FPS: %s" % (cpu_usage, fps))
+
+        # record the performance data for future analysis.
+        self.performance_results['fps_' + file_name] = fps
+        self.performance_results['cpuusage_' + file_name] = cpu_usage
+
+        # TODO(jiesun/fbarchard): what else need to be checked?
+