Add TYPE_HEADING sensor type to sensor NDK.
Bug: 189983308
Test: Presubmits
Change-Id: I53bc59d6a1d03ab5e980920f0420ce0263cbc52c
diff --git a/include/android/sensor.h b/include/android/sensor.h
index 7e86d3f..cf1ca02 100644
--- a/include/android/sensor.h
+++ b/include/android/sensor.h
@@ -301,6 +301,14 @@
* supported and a value of 0 means not supported.
*/
ASENSOR_TYPE_GYROSCOPE_LIMITED_AXES_UNCALIBRATED = 41,
+ /**
+ * {@link ASENSOR_TYPE_HEADING}
+ * reporting-mode: continuous
+ *
+ * A heading sensor measures the direction in which the device is pointing
+ * relative to true north in degrees.
+ */
+ ASENSOR_TYPE_HEADING = 42,
};
/**
@@ -563,6 +571,23 @@
};
} ALimitedAxesImuUncalibratedEvent;
+typedef struct AHeadingEvent {
+ /**
+ * The direction in which the device is pointing relative to true north in
+ * degrees. The value must be between 0.0 (inclusive) and 360.0 (exclusive),
+ * with 0 indicating north, 90 east, 180 south, and 270 west.
+ */
+ float heading;
+ /**
+ * Accuracy is defined at 68% confidence. In the case where the underlying
+ * distribution is assumed Gaussian normal, this would be considered one
+ * standard deviation. For example, if the heading returns 60 degrees, and
+ * accuracy returns 10 degrees, then there is a 68 percent probability of
+ * the true heading being between 50 degrees and 70 degrees.
+ */
+ float accuracy;
+} AHeadingEvent;
+
/**
* Information that describes a sensor event, refer to
* <a href="/reference/android/hardware/SensorEvent">SensorEvent</a> for additional
@@ -602,6 +627,7 @@
AHeadTrackerEvent head_tracker;
ALimitedAxesImuEvent limited_axes_imu;
ALimitedAxesImuUncalibratedEvent limited_axes_imu_uncalibrated;
+ AHeadingEvent heading;
};
union {
uint64_t data[8];
diff --git a/libs/sensor/Sensor.cpp b/libs/sensor/Sensor.cpp
index 5b4631a..ec0ced8 100644
--- a/libs/sensor/Sensor.cpp
+++ b/libs/sensor/Sensor.cpp
@@ -296,6 +296,10 @@
mStringType = SENSOR_STRING_TYPE_GYROSCOPE_LIMITED_AXES_UNCALIBRATED;
mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
break;
+ case SENSOR_TYPE_HEADING:
+ mStringType = SENSOR_STRING_TYPE_HEADING;
+ mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
+ break;
default:
// Only pipe the stringType, requiredPermission and flags for custom sensors.
if (halVersion > SENSORS_DEVICE_API_VERSION_1_0 && hwSensor.stringType) {
diff --git a/services/sensorservice/SensorServiceUtils.cpp b/services/sensorservice/SensorServiceUtils.cpp
index c304381..7dd2331 100644
--- a/services/sensorservice/SensorServiceUtils.cpp
+++ b/services/sensorservice/SensorServiceUtils.cpp
@@ -67,6 +67,9 @@
case SENSOR_TYPE_HEAD_TRACKER:
return 7;
+ case SENSOR_TYPE_HEADING:
+ return 2;
+
default:
return 3;
}