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webrtc_cases.py
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# SPDX-License-Identifier: BSD-3-Clause
#
# WebRTC cases for profiling Chromium
#
# Copyright 2014 The Chromium Authors.
#
# Modified for chromium-profiler by Marek Behún <[email protected]>
#
# This code is based on Chromium's own perf code from file
# tools/perf/page_sets/webrtc_cases.py
# in Chromium sources (Chromium version 94.0.4606.41).
#
# Basically the code does almost the same things, but:
# - it is rewritten to use our ChromeProfileDriver (from profilers.py)
# - it does not do benchmark measurements, since we don't need them
from time import sleep
from case_drivers import CaseDriverWithHttpServer
class WebRTCBase(CaseDriverWithHttpServer):
directory='webrtc_cases'
def browser_args(self):
return super().browser_args() + [
'use-fake-device-for-media-stream',
'use-fake-ui-for-media-stream',
]
class GetUserMedia(WebRTCBase):
def case_run(self):
self.driver.get(self.url + '/resolution.html')
if self.driver.wait_for_element_click('button[id="hd"]') is not None:
sleep(10)
class DataChannel(WebRTCBase):
def case_run(self):
self.driver.get(self.url + '/datatransfer.html')
self.driver.execute_script('megsToSend.value = 100;')
if self.driver.wait_for_element_click('button[id="sendTheData"]') is not None:
sleep(10)
class CanvasCapturePeerConnection(WebRTCBase):
def case_run(self):
self.driver.get(self.url + '/canvas-capture.html')
if self.driver.wait_for_element_click('button[id="startButton"]') is not None:
sleep(10)
class VideoCodecConstraints(WebRTCBase):
def __init__(self, codec):
super().__init__()
self.codec = codec
def __str__(self):
return super().__str__() + '.%s' % self.codec
def case_run(self):
self.driver.get(self.url + '/codec_constraints.html')
self.driver.wait_for_element_click('input[id="%s"]' % self.codec)
self.driver.wait_for_element_click('button[id="startButton"]')
self.driver.wait_for_element('button[id="callButton"]:enabled')
self.driver.wait_for_element_click('button[id="callButton"]')
sleep(20)
self.driver.wait_for_element_click('button[id="hangupButton"]')
class MultiplePeerConnections(WebRTCBase):
def case_run(self):
self.driver.get(self.url + '/multiple-peerconnections.html')
self.driver.execute_script('document.getElementById("num-peerconnections").value=10;')
self.driver.execute_script('document.getElementById("cpuoveruse-detection").checked=false;')
if self.driver.wait_for_element_click('button[id="start-test"]') is not None:
sleep(20)
class PausePlayPeerConnections(WebRTCBase):
def case_run(self):
self.driver.get(self.url + '/pause-play.html')
self.driver.execute_script('startTest(20, 10, 20, "video");')
sleep(20)
class InsertableStreamsAudioProcessing(WebRTCBase):
def browser_args(self):
return super().browser_args() + [
'enable-blink-features=WebCodecs,MediaStreamInsertableStreams',
]
def case_run(self):
self.driver.get(self.url + '/audio-processing.html')
supported = self.driver.execute_script('''
try {
new MediaStreamTrackGenerator('audio');
return true;
} catch (e) {
return false;
}
''')
if supported:
self.driver.wait_for_javascript_condition('audio')
self.driver.execute_script('start();')
sleep(10)
class InsertableStreamsVideoProcessing(WebRTCBase):
def __init__(self, source, transform, sink):
super().__init__()
self.source = source
self.transform = transform
self.sink = sink
def __str__(self):
return super().__str__() + '.%s-%s-%s' % (self.source, self.transform, self.sink)
def browser_args(self):
return super().browser_args() + [
'enable-blink-features=WebCodecs,MediaStreamInsertableStreams',
]
def case_run(self):
self.driver.get(self.url + '/video-processing.html')
supported = self.driver.execute_script(
'return (typeof MediaStreamTrackProcessor !== "undefined" && typeof MediaStreamTrackGenerator !== "undefined");')
if supported:
self.driver.wait_for_element('select[id="sourceSelector"]:enabled')
self.driver.execute_script('document.getElementById("sourceSelector").value="%s";' % self.source)
self.driver.wait_for_element('select[id="transformSelector"]:enabled')
self.driver.execute_script('document.getElementById("transformSelector").value="%s";' % self.transform)
self.driver.wait_for_element('select[id="sinkSelector"]:enabled')
self.driver.execute_script('document.getElementById("sinkSelector").value="%s";' % self.sink)
self.driver.execute_script('document.getElementById("sourceSelector").dispatchEvent(new InputEvent("input", {}));')
self.driver.wait_for_element('.sinkVideo')
sleep(10)
frame_count = self.driver.execute_script('return document.querySelector(".sinkVideo").webkitDecodedFrameCount;')
print('webkitDecodedFrameCount = %d' % frame_count)
class NegotiateTiming(WebRTCBase):
def case_run(self):
self.driver.get(self.url + '/negotiate-timing.html')
self.driver.execute_script('start();')
self.driver.wait_for_javascript_condition('!callButton.disabled')
self.driver.execute_script('call();')
self.driver.wait_for_javascript_condition('!renegotiateButton.disabled')
# Due to suspicion of renegotiate activating too early:
sleep(1)
# Negotiate 50 transceivers, then negotiate back to 1, simulating Meet "pin"
self.driver.execute_script('videoSectionsField.value = 50;')
self.driver.execute_script('renegotiate();')
self.driver.wait_for_javascript_condition('!renegotiateButton.disabled')
self.driver.execute_script('videoSectionsField.value = 1;')
self.driver.execute_script('renegotiate();')
self.driver.wait_for_javascript_condition('!renegotiateButton.disabled')
# Negotiate back up to 50, simulating Meet "unpin". This is what gets measured.
self.driver.execute_script('videoSectionsField.value = 50;')
self.driver.execute_script('renegotiate();')
self.driver.wait_for_javascript_condition('!renegotiateButton.disabled')
def all_cases():
return [
GetUserMedia(),
DataChannel(),
CanvasCapturePeerConnection(),
VideoCodecConstraints('VP8'),
VideoCodecConstraints('VP9'),
VideoCodecConstraints('H264'),
MultiplePeerConnections(),
PausePlayPeerConnections(),
InsertableStreamsAudioProcessing(),
InsertableStreamsVideoProcessing('camera', 'webgl', 'video'),
InsertableStreamsVideoProcessing('video', 'webgl', 'video'),
InsertableStreamsVideoProcessing('pc', 'webgl', 'video'),
InsertableStreamsVideoProcessing('camera', 'canvas2d', 'video'),
InsertableStreamsVideoProcessing('camera', 'noop', 'video'),
InsertableStreamsVideoProcessing('camera', 'webgl', 'pc'),
]