Cleanup.

2026-10-03 18:03:06 +02:00 · 2019-10-29 23:05:17 +01:00
parent 9e877e4762
commit e52b1188a3
4 changed files with 16 additions and 22 deletions
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2010 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package de.dennisguse.opentracks.util;
+
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothClass;
+import android.bluetooth.BluetoothDevice;
+import android.bluetooth.BluetoothGattCharacteristic;
+
+import java.util.List;
+import java.util.Set;
+
+/**
+ * Utilities for dealing with bluetooth devices.
+ *
+ * @author Rodrigo Damazio
+ */
+public class BluetoothUtils {
+
+    private BluetoothUtils() {
+    }
+
+    /**
+     * Populates the device names and the device addresses with all the suitable
+     * bluetooth devices.
+     *
+     * @param bluetoothAdapter the bluetooth adapter
+     * @param deviceNames      list of device names
+     * @param deviceAddresses  list of device addresses
+     */
+    public static void populateDeviceLists(BluetoothAdapter bluetoothAdapter, List<String> deviceNames, List<String> deviceAddresses) {
+        // Ensure the bluetooth adapter is not in discovery mode.
+        bluetoothAdapter.cancelDiscovery();
+
+        Set<BluetoothDevice> pairedDevices = bluetoothAdapter.getBondedDevices();
+        for (BluetoothDevice device : pairedDevices) {
+            BluetoothClass bluetoothClass = device.getBluetoothClass();
+            if (bluetoothClass != null && (bluetoothClass.getDeviceClass() & BluetoothClass.Device.HEALTH_PULSE_RATE) != 0) {
+                deviceAddresses.add(device.getAddress());
+                deviceNames.add(device.getName());
+            }
+        }
+    }
+
+    public static int parseHeartRate(BluetoothGattCharacteristic characteristic) {
+        //DOCUMENTATION https://www.bluetooth.com/specifications/gatt/characteristics/
+        byte[] raw = characteristic.getValue();
+        int index = ((raw[0] & 0x1) == 1) ? 2 : 1;
+        int format = (index == 1) ? BluetoothGattCharacteristic.FORMAT_UINT8 : BluetoothGattCharacteristic.FORMAT_UINT16;
+        return characteristic.getIntValue(format, index);
+    }
+
+}