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  /external/walt/android/WALT/app/src/main/java/org/chromium/latency/walt/programmer/
DeviceConstants.java 17 package org.chromium.latency.walt.programmer;
Programmer.java 17 package org.chromium.latency.walt.programmer;
23 import org.chromium.latency.walt.R;
24 import org.chromium.latency.walt.SimpleLogger;
25 import org.chromium.latency.walt.WaltConnection;
47 InputStream in = context.getResources().openRawResource(R.raw.walt);
BootloaderConnection.java 1 package org.chromium.latency.walt.programmer;
7 import org.chromium.latency.walt.BaseUsbConnection;
  /external/walt/pywalt/
walt 3 from pywalt.walt import main
  /external/walt/android/WALT/app/src/main/java/org/chromium/latency/walt/
RobotAutomationListener.java 17 package org.chromium.latency.walt;
RemoteClockInfo.java 17 package org.chromium.latency.walt;
40 * https://github.com/google/walt/blob/master/android/WALT/app/src/main/jni/README.md
WaltConnection.java 17 package org.chromium.latency.walt;
BaseTest.java 17 package org.chromium.latency.walt;
21 import static org.chromium.latency.walt.Utils.getBooleanPreference;
CrashLogActivity.java 17 package org.chromium.latency.walt;
28 * the USB port is taken by the WALT device.
AboutFragment.java 17 package org.chromium.latency.walt;
30 * A screen that shows information about WALT.
49 String text = String.format("WALT v%s (versionCode=%d)\n",
51 text += "WALT protocol version: " + WaltDevice.PROTOCOL_VERSION + "\n";
FrontPageFragment.java 17 package org.chromium.latency.walt;
DiagnosticsFragment.java 17 package org.chromium.latency.walt;
LogFragment.java 17 package org.chromium.latency.walt;
LogUploader.java 17 package org.chromium.latency.walt;
SimpleLogger.java 17 package org.chromium.latency.walt;
TouchCatcherView.java 17 package org.chromium.latency.walt;
CustomNumberPicker.java 17 package org.chromium.latency.walt;
FastPathSurfaceView.java 17 package org.chromium.latency.walt;
NumberPickerPreference.java 17 package org.chromium.latency.walt;
  /external/walt/docs/
ChromeOS.md 1 ## Using WALT on ChromeOS
3 WALT can be used on ChromeOS in two different modes:
4 1. Via the [pywalt/walt.py](/pywalt/walt.py) command line script - for this mode refer to [pywalt/README.md](/pywalt/README.md)
5 1. Using the [WALT Android app](https://play.google.com/store/apps/details?id=org.kamrik.latency.walt) and walt.py script as a bridge
11 Copy the [pywalt/](/pywalt) directory from WALT repo to the Chromebook. One option is to download a repo tarball directly from GitHub:
14 wget https://github.com/google/walt/archive/master.tar.gz
16 cd walt-master/pywal
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AudioLatency.md 3 Audio output latency as measured by WALT is the time that passes from the moment an application
22 WALT app follows this pattern.
25 [player callback](https://github.com/google/walt/blob/v0.1.6/android/WALT/app/src/main/jni/player.c#L107)
26 and the latency reported by WALT app is the time from the
27 [Enqueue() call](https://github.com/google/walt/blob/v0.1.6/android/WALT/app/src/main/jni/player.c#L123)
28 until there is a detectable signal on the wire. Note that this does not include the time between the moment the app decided to output a tone until the Enqueue() call. This is somewhat counterintuitive but this time is deliberately omitted. In case of the WALT app code this time is likely be uniformly distributed between 0 and the length of the buffer (5 ms in case of Nexus 5) and therefore would contribute considerable variance but little interesting information if included in the reported latency.
32 [recorder callback](https://github.com/google/walt/blob/v0.1.6/android/WALT/app/src/main/jni/player.c#L345
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Development.md 1 ## Setting up for WALT Android app development
3 In general WALT Android app has no special requirements but since WALT usually takes up the only available USB connector on the phone, the typical development using ADB via USB becomes difficult. Below are some options to overcome this problem.
14 1. Use the hub to connect WALT, Ethernet adapter and whatever other USB peripherals you might want to test using WALT
23 Since Android on ChromeOS has no access to USB, it requires a TCP bridge script implemented in [walt.py](/pywalt/walt.py). Detailed instructions in [Chromeos.md](Chromeos.md).
41 1. Run the WALT TCP bridge (more details [here](ChromeOS.md))
44 1. `python walt.py -t bridge`
  /external/walt/pywalt/pywalt/
walt.py 19 Runs the touchpad drag latency test using WALT Latency Timer
21 $ python walt.py 11
69 class Walt(object):
70 """ A class for communicating with Walt device
73 with Walt('/dev/ttyUSB0') as walt:
79 # Teensy commands, always singe char. Defined in WALT.ino
80 # github.com/google/walt/blob/master/arduino/walt/walt.in
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  /external/walt/android/WALT/app/src/test/java/org/chromium/latency/walt/
TraceLoggerTest.java 17 package org.chromium.latency.walt;
40 "WALTThread-[0-9]+ \\(42\\) \\[[0-9]+] .{4} 30\\.012345: tracing_mark_write: B\\|42\\|SomeTitle\\|description=Some description here\\|WALT\n" +
41 "WALTThread-[0-9]+ \\(42\\) \\[[0-9]+] .{4} 30\\.045678: tracing_mark_write: E\\|42\\|SomeTitle\\|\\|WALT\n" +
42 "WALTThread-[0-9]+ \\(42\\) \\[[0-9]+] .{4} 40\\.012345: tracing_mark_write: B\\|42\\|AnotherTitle\\|description=Another description here\\|WALT\n" +
43 "WALTThread-[0-9]+ \\(42\\) \\[[0-9]+] .{4} 40\\.045678: tracing_mark_write: E\\|42\\|AnotherTitle\\|\\|WALT\n";
  /external/walt/
README.md 0 ## WALT Latency Timer ##
5 * [Post about WALT on Android Developers Blog](http://android-developers.blogspot.ca/2016/04/a-new-method-to-measure-touch-and-audio.html)
6 * [Instructional videos showing how to use WALT](https://www.youtube.com/playlist?list=PLd6Fi7WgXfcCEJg1FDqNCoQfpWo7W3J5a)
8 * Mailing list - [walt-discuss](https://groups.google.com/forum/#!forum/walt-discuss)
9 * Low-traffic mailing list for major announcements [walt-announce](https://groups.google.com/forum/#!forum/walt-announce)
11 WALT is designed to measure the latency of physical sensors and outputs on phones and computers. It can currently perform the following measurements:
21 The WALT app for Android can be
22 [installed from Google Play](https://play.google.com/store/apps/details?id=org.kamrik.latency.walt)
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