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51 lines
1.3 KiB
51 lines
1.3 KiB
#!/usr/bin/env python
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# Copyright 2017 Google Inc.
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#
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import optparse
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import re
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import subprocess
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import time
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def query_surfaceflinger_frame_count():
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parcel = subprocess.Popen("adb shell service call SurfaceFlinger 1013",
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stdout=subprocess.PIPE, stderr=subprocess.PIPE,
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shell=True).communicate()[0]
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if not parcel:
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raise Exception("FAILED: adb shell service call SurfaceFlinger 1013")
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framecount = re.search("Result: Parcel\(([a-f0-9]+) ", parcel)
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if not framecount:
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raise Exception("Unexpected result from SurfaceFlinger: " + parcel)
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return int(framecount.group(1), 16)
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def main(interval):
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startframe = query_surfaceflinger_frame_count()
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starttime = time.time()
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while True:
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time.sleep(interval)
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endframe = query_surfaceflinger_frame_count()
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endtime = time.time()
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fps = (endframe - startframe) / (endtime - starttime)
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print "%.2f" % fps
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startframe = endframe
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starttime = endtime
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if __name__ == '__main__':
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parser = optparse.OptionParser()
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parser.add_option("-i", "--interval", type="int", default="2",
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help="Number of seconds to count frames.")
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options, args = parser.parse_args()
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main(options.interval)
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