AltitudeSumManager: extracted Barometer driver.

Part of #1424.
2023-05-27 09:22:49 +02:00
parent 4906d3f942
commit 6c852091ce
3 changed files with 99 additions and 65 deletions
@@ -0,0 +1,67 @@
+package de.dennisguse.opentracks.sensors.driver;
+
+import android.content.Context;
+import android.hardware.Sensor;
+import android.hardware.SensorEvent;
+import android.hardware.SensorEventListener;
+import android.hardware.SensorManager;
+import android.os.Handler;
+import android.util.Log;
+
+import java.util.concurrent.TimeUnit;
+
+import de.dennisguse.opentracks.data.models.AtmosphericPressure;
+import de.dennisguse.opentracks.sensors.AltitudeSumManager;
+
+public class BarometerInternal {
+
+    private static final String TAG = BarometerInternal.class.getSimpleName();
+
+    private static final int SAMPLING_PERIOD = (int) TimeUnit.SECONDS.toMicros(5);
+
+    private AltitudeSumManager observer;
+
+    private final SensorEventListener listener = new SensorEventListener() {
+        @Override
+        public void onSensorChanged(SensorEvent event) {
+            if (!isConnected()) {
+                Log.w(TAG, "Not connected to sensor, cannot process data.");
+                return;
+            }
+
+            observer.onSensorValueChanged(AtmosphericPressure.ofHPA(event.values[0]));
+        }
+
+        @Override
+        public void onAccuracyChanged(Sensor sensor, int accuracy) {
+            Log.w(TAG, "Sensor accuracy changes are (currently) ignored.");
+        }
+    };
+
+    public void connect(Context context, Handler handler, AltitudeSumManager observer) {
+        this.observer = observer;
+        SensorManager sensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
+        Sensor pressureSensor = sensorManager.getDefaultSensor(Sensor.TYPE_PRESSURE);
+        if (pressureSensor == null) {
+            Log.w(TAG, "No pressure sensor available.");
+            this.observer = null;
+            return;
+        }
+
+        if (sensorManager.registerListener(listener, pressureSensor, SAMPLING_PERIOD, handler)) {
+            this.observer = observer;
+            return;
+        }
+
+        disconnect(context);
+    }
+
+    public void disconnect(Context context) {
+        SensorManager sensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
+        sensorManager.unregisterListener(listener);
+    }
+
+    public boolean isConnected() {
+        return observer != null;
+    }
+}