Bluetooth: rename to BluetoothHandlers.

2023-11-05 15:34:02 +01:00
parent f2594371d3
commit 15f3ccbcbd
14 changed files with 43 additions and 43 deletions
@@ -0,0 +1,69 @@
+package de.dennisguse.opentracks.sensors;
+
+import android.bluetooth.BluetoothGattCharacteristic;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.VisibleForTesting;
+
+import java.util.List;
+import java.util.UUID;
+
+import de.dennisguse.opentracks.data.models.HeartRate;
+import de.dennisguse.opentracks.sensors.sensorData.SensorDataHeartRate;
+import de.dennisguse.opentracks.sensors.sensorData.SensorHandlerInterface;
+
+public class BluetoothHandlerManagerHeartRate implements SensorHandlerInterface {
+
+    public static final ServiceMeasurementUUID HEARTRATE = new ServiceMeasurementUUID(
+            new UUID(0x180D00001000L, 0x800000805f9b34fbL),
+            new UUID(0x2A3700001000L, 0x800000805f9b34fbL)
+    );
+
+    // Used for device discovery in preferences
+    public static final List<ServiceMeasurementUUID> HEART_RATE_SUPPORTING_DEVICES = List.of(
+            HEARTRATE,
+            //Devices that support HEART_RATE_SERVICE_UUID, but do not announce HEART_RATE_SERVICE_UUID in there BLE announcement messages (during device discovery).
+            new ServiceMeasurementUUID(
+                    UUID.fromString("0000fee0-0000-1000-8000-00805f9b34fb"), //Miband3
+                    HEARTRATE.measurementUUID()
+            )
+    );
+
+    @Override
+    public List<ServiceMeasurementUUID> getServices() {
+        return HEART_RATE_SUPPORTING_DEVICES;
+    }
+
+    @Override
+    public SensorDataHeartRate createEmptySensorData(String address) {
+        return new SensorDataHeartRate(address);
+    }
+
+    @Override
+    public void handlePayload(SensorManager.SensorDataChangedObserver observer, @NonNull ServiceMeasurementUUID serviceMeasurementUUID, String sensorName, String address, BluetoothGattCharacteristic characteristic) {
+        HeartRate heartRate = parseHeartRate(characteristic);
+
+        if (heartRate != null) {
+            observer.onChange(new SensorDataHeartRate(address, sensorName, heartRate));
+        }
+    }
+
+    @VisibleForTesting
+    public static HeartRate parseHeartRate(BluetoothGattCharacteristic characteristic) {
+        //DOCUMENTATION https://www.bluetooth.com/wp-content/uploads/Sitecore-Media-Library/Gatt/Xml/Characteristics/org.bluetooth.characteristic.heart_rate_measurement.xml
+        byte[] raw = characteristic.getValue();
+        if (raw.length == 0) {
+            return null;
+        }
+
+        boolean formatUINT16 = ((raw[0] & 0x1) == 1);
+        if (formatUINT16 && raw.length >= 3) {
+            return HeartRate.of(characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT16, 1));
+        }
+        if (!formatUINT16 && raw.length >= 2) {
+            return HeartRate.of(characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, 1));
+        }
+
+        return null;
+    }
+}