Modify Bluetooth Class of Device from Android stack

Bug: 36015415
Test: Modified Class of Device using sample app and verified device icon
change when discovering from a remote device.

Change-Id: Ie25f10be5560f9c090ebe489d5f3bb00cbca81ef

1 files changed, 46 insertions, 0 deletions

diff --git a/core/java/android/bluetooth/BluetoothClass.java b/core/java/android/bluetooth/BluetoothClass.java
index 57e4abb12987..f22ea6e88e04 100755
--- a/core/java/android/bluetooth/BluetoothClass.java
+++ b/core/java/android/bluetooth/BluetoothClass.java
@@ -19,6 +19,10 @@ package android.bluetooth;
 import android.os.Parcel;
 import android.os.Parcelable;
 
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.util.Arrays;
+
 /**
  * Represents a Bluetooth class, which describes general characteristics
  * and capabilities of a device. For example, a Bluetooth class will
@@ -275,6 +279,48 @@ public final class BluetoothClass implements Parcelable {
         return (mClass & Device.BITMASK);
     }
 
+    /**
+     * Return the Bluetooth Class of Device (CoD) value including the
+     * {@link BluetoothClass.Service}, {@link BluetoothClass.Device.Major} and
+     * minor device fields.
+     *
+     * <p>This value is an integer representation of Bluetooth CoD as in
+     * Bluetooth specification.
+     *
+     * @see <a href="Bluetooth CoD">https://www.bluetooth.com/specifications/assigned-numbers/baseband</a>
+     *
+     * @hide
+     */
+    public int getClassOfDevice() {
+        return mClass;
+    }
+
+    /**
+     * Return the Bluetooth Class of Device (CoD) value including the
+     * {@link BluetoothClass.Service}, {@link BluetoothClass.Device.Major} and
+     * minor device fields.
+     *
+     * <p>This value is a byte array representation of Bluetooth CoD as in
+     * Bluetooth specification.
+     *
+     * <p>Bluetooth COD information is 3 bytes, but stored as an int. Hence the
+     * MSB is useless and needs to be thrown away. The lower 3 bytes are
+     * converted into a byte array MSB to LSB. Hence, using BIG_ENDIAN.
+     *
+     * @see <a href="Bluetooth CoD">https://www.bluetooth.com/specifications/assigned-numbers/baseband</a>
+     *
+     * @hide
+     */
+    public byte[] getClassOfDeviceBytes() {
+        byte[] bytes = ByteBuffer.allocate(4)
+                .order(ByteOrder.BIG_ENDIAN)
+                .putInt(mClass)
+                .array();
+
+        // Discard the top byte
+        return Arrays.copyOfRange(bytes, 1, bytes.length);
+    }
+
     /** @hide */
     public static final int PROFILE_HEADSET = 0;
     /** @hide */