From d72ba14c90511a7be5a130c54e6bbdec282f5c8e Mon Sep 17 00:00:00 2001
From: Brian Duddie <bduddie@google.com>
Date: Fri, 10 Dec 2021 14:24:09 -0800
Subject: Add HEAD_TRACKER sensor type definition

This new sensor type supports tracking the orientation and rate of
rotation of a user's head, which can be useful for features such as
spatial audio.

Bug: 210156629
Test: compile only; to be validated in later CLs
Change-Id: I861be09d14e208fb992b23554b6c0733e4163f0c
---
 .../current/android/hardware/sensors/Event.aidl               | 11 +++++++++++
 .../current/android/hardware/sensors/SensorType.aidl          |  1 +
 2 files changed, 12 insertions(+)

(limited to 'sensors/aidl/aidl_api')

diff --git a/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/Event.aidl b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/Event.aidl
index 186b2be8b3..c92ab1ab0c 100644
--- a/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/Event.aidl
+++ b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/Event.aidl
@@ -51,6 +51,7 @@ parcelable Event {
     android.hardware.sensors.DynamicSensorInfo dynamic;
     android.hardware.sensors.AdditionalInfo additional;
     android.hardware.sensors.Event.EventPayload.Data data;
+    android.hardware.sensors.Event.EventPayload.HeadTracker headTracker;
     @FixedSize @VintfStability
     parcelable Vec4 {
       float x;
@@ -75,6 +76,16 @@ parcelable Event {
       float zBias;
     }
     @FixedSize @VintfStability
+    parcelable HeadTracker {
+      float rx;
+      float ry;
+      float rz;
+      float vx;
+      float vy;
+      float vz;
+      int discontinuityCount;
+    }
+    @FixedSize @VintfStability
     parcelable HeartRate {
       float bpm;
       android.hardware.sensors.SensorStatus status;
diff --git a/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/SensorType.aidl b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/SensorType.aidl
index 4f3b5b2e79..3d7ab45cd8 100644
--- a/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/SensorType.aidl
+++ b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/SensorType.aidl
@@ -70,5 +70,6 @@ enum SensorType {
   LOW_LATENCY_OFFBODY_DETECT = 34,
   ACCELEROMETER_UNCALIBRATED = 35,
   HINGE_ANGLE = 36,
+  HEAD_TRACKER = 37,
   DEVICE_PRIVATE_BASE = 65536,
 }
-- 
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