how to capture tp event report through adb

To capture Touchpad (TP) events using the Android Debug Bridge (adb), you'll need to access the touchpad input from a rooted Android device or an emulator with root access. Here's a general approach:

1. Enable USB debugging on your device and connect it to your computer via USB.
2. Open a command prompt or terminal window and navigate to the directory where `adb` is installed.
3. Run the following command to set up a "shell" connection with your device:

   $ adb devices

If your device is recognized, you should see its serial number listed.

4. To view TP events in real-time, use this command:

   $ adb shell cat /dev/input/eventX

Replace `X` with the ID of the touchpad device (you can find it by running `ls /sys/class/input`, which lists all input devices). The events will be displayed as raw kernel data.

5. For more readability, you can pipe the output to a utility that decodes touchpad events, such as `uinput_event`. Install it if not already present (for example, with `apt-get install uinput-tools` for Ubuntu).

6. Decode the events with the `uinput_event` tool:

   $ adb shell uinput_event < /dev/input/eventX

Keep in mind that these commands may vary depending on your Android version and the specific touchpad driver used. Also, capturing TP events might require additional permissions, so ensure that your app has the necessary access before trying to monitor them.