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android+linux: add head tracking and gestures

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Kavish Devar
2025-03-14 17:32:47 +05:30
parent 55d06d2f65
commit 22d5ae60b6
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27
AAP Definitions.md
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@@ -348,27 +348,34 @@ The packets sent (based on the previous states) are as follows:
> *i do hate apple for not hardcoding these, like there are literally only 4^2 - ${\binom{4}{1}}$ - $\binom{4}{2}$*
# Miscellaneous/Unknown
# Head Tracking
## Request something (Probably Head Positions)
## Start Tracking
This packet initiates head tracking. When sent, the AirPods begin streaming head tracking data (e.g. orientation and acceleration) for live plotting and analysis.
```plaintext
<!-- 04 00 04 00 17 00 00 00 10 00 11 00 08 7C 10 02 42 0B 08 4E 10 02 1A 05 01 40 9C 00 00 -->
OR
04 00 04 00 17 00 00 00 10 00 10 00 08 A1 02 42 0B 08 0E 10 02 1A 05 01 40 9C 00 00
```
Example packet
## Stop Tracking
```plaintext
04 00 04 00 17 00 00 00 10 00 43 00 08 ec 07 10 01 1a 3c 0e 00 01 90 95 5d af 86 19 00 00 03 04 43 94 04 9e 6b 01 00 00 00 d5 a2 06 13 eb 13 03 00 f0 ff 01 00 67 83 67 83 67 83 fe ff fd ff 07 00 b3 01 9c 03 65 00 48 74 2c 37 fd 1e 00 00
```
## Stop whatever was requested
This packet stops the head tracking data stream.
```plaintext
04 00 04 00 17 00 00 00 10 00 11 00 08 7E 10 02 42 0B 08 4E 10 02 1A 05 01 00 00 00 00
```
## Received Head Tracking Sensor Data
Once tracking is active, the AirPods stream sensor packets with the following common structure:
| Field | Offset | Length (bytes) |
|--------------------------|--------|----------------|
| orientation 1 | 43 | 2 |
| orientation 2 | 45 | 2 |
| orientation 3 | 47 | 2 |
| Horizontal Acceleration | 51 | 2 |
| Vertical Acceleration | 53 | 2 |
# LICENSE