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55794fdde8
Change-Id: If3e3c4e01b19443714d880ae669aaa8b39edfff7 |
4 years ago | |
|---|---|---|
| .. | ||
| README.md | 4 years ago | |
| example.html | 4 years ago | |
| log.test | 4 years ago | |
| viewer_c3.py | 4 years ago | |
README.md
Audio thread log viewer
It is a tool to draw a time chart from audio thread log. It can make debug easier.
[TOC]
Prepare an audio thread log
The easiest way to get audio thread log is typing cras_test_client --dump_a
in ChromeOS shell.
The format should be like
Audio Thread Event Log:
start at 4434i
2019-07-02T15:30:46.539479158 cras atlog SET_DEV_WAKE dev:7 hw_level:216 sleep:168
2019-07-02T15:30:46.539482658 cras atlog DEV_SLEEP_TIME dev:7 wake: 15:30:46.542974324
2019-07-02T15:30:46.539492991 cras atlog DEV_SLEEP_TIME dev:8 wake: 15:30:46.539358095
2019-07-02T15:30:46.539501241 cras atlog SLEEP sleep:000000000.000000000 longest_wake:001553999
...
Generate an HTML file
usage: viewer_c3.py [-h] [-o OUTPUT] [-d] FILE
Draw time chart from audio thread log
positional arguments:
FILE The audio thread log file
optional arguments:
-h, --help show this help message and exit
-o OUTPUT The output HTML file (default: view.html)
-d Show debug message (default: False)
View the result
Open the output from vierwe_c3.py by Chrome. There are several functions in this site:
- The blue points show the hardware level change of the audio thread logs. Click a point can jump to a corresponding line in the log area.
- There are some options can be selected. It can show the event in the chart so that users can easily see when a stream is added, when a stream is fetched , and so on.
- The textarea in the lower right corner can be used to note.