Android Automotive Developer Tools

AADevT contains tools for AA device developers to improve their productivity.

Fully unbundle from Android versions, and use the AOSP trunk based development model.
Bridge the app ecosystem for Android Automotive OS because device developers are the key producers for the core apps.
Leverage Android app developer tools that a few million developers use.

Dev Tools

This contains tools designed specifically to simplify the AA device development workflows.

clone_proj.sh to clone a git project for the unbundled development workflows in instead of the whole Android repo.

Change Reports

change_report.py

change_report.py creates a diff statistic CSV file from 2 versions of a codebase. This is useful when the git commit history is somehow not obtainable. What you need is to get 2 versions of a codebase downloaded on your disk first.

You can compare specific folders of concern for a quick result, or when there is a code patch change.
This skips all symlinks & ignores common repository metadata folders, e.g. .git, etc.
It can take a long time & generates a large CSV file for the whole Android codebase & especially if they are many changes. For example:
- Android 11 QPR1 vs QPR2 takes more than 8 min. & generates a 5MB CSV file.
- Android 10 QPR3 vs Android 11 QPR2 takes more than 11 min. & generates a 95MB CSV file.
To reduce time, you should always remove out, the build output folder first.
For example, to compare Android 11 QPR1 vs QPR2 AOSP codebases on your disk.

python3 change_report.py --old_dir ~/android/android11-qpr1-release \
  --new_dir ~/android/android11-qpr2-release \
  --csv_file ~/change_reports/change_report_android11-qpr1-release_android11-qpr2-release.csv

An output example: change_report-new_vs_old_codebase.csv is the change report between dev/resource/old_codebase and new_codebase.
The states are:
- SAME = 0
- NEW = 1
- REMOVED = 2
- MODIFIED = 3
- INCOMPARABLE = 4

sysui_oem_diff.sh

sysui_oem_diff.sh generates a summary of code changes between 2 revisions. Which gives you a rough idea of changes on files and Lines of Code.

The report is especailly useful to discuss the pain points on sysui/notif customization with AAOS team.
For example, to generate the change report for Android 11 to 10 QPR3: sysui_gcar_android10-qpr3-release_android11-release.txt

./sysui_oem_diff.sh ~/Android/android11-release remotes/aosp/android10-qpr3-release remotes/aosp/android11-release > sysui_gcar_android10-qpr3-release_android11-release.txt

System Performance Tuning

AAOS system performance turning is hard. Here are the tools to make it a bit easier for the device developers.

time_to_init_disp.sh to measure an app's Time the Initial Display