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.

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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

Android Virtual Device as a Development Platform