Examples with ParcelUuid android.os.ParcelUuid used on opensource projects

Example 6 with ParcelUuid

use of android.os.ParcelUuid in project platform_frameworks_base by android.

the class ScanRecord method parseFromBytes.

/**
     * Parse scan record bytes to {@link ScanRecord}.
     * <p>
     * The format is defined in Bluetooth 4.1 specification, Volume 3, Part C, Section 11 and 18.
     * <p>
     * All numerical multi-byte entities and values shall use little-endian <strong>byte</strong>
     * order.
     *
     * @param scanRecord The scan record of Bluetooth LE advertisement and/or scan response.
     * @hide
     */
public static ScanRecord parseFromBytes(byte[] scanRecord) {
    if (scanRecord == null) {
        return null;
    }
    int currentPos = 0;
    int advertiseFlag = -1;
    List<ParcelUuid> serviceUuids = new ArrayList<ParcelUuid>();
    String localName = null;
    int txPowerLevel = Integer.MIN_VALUE;
    SparseArray<byte[]> manufacturerData = new SparseArray<byte[]>();
    Map<ParcelUuid, byte[]> serviceData = new ArrayMap<ParcelUuid, byte[]>();
    try {
        while (currentPos < scanRecord.length) {
            // length is unsigned int.
            int length = scanRecord[currentPos++] & 0xFF;
            if (length == 0) {
                break;
            }
            // Note the length includes the length of the field type itself.
            int dataLength = length - 1;
            // fieldType is unsigned int.
            int fieldType = scanRecord[currentPos++] & 0xFF;
            switch(fieldType) {
                case DATA_TYPE_FLAGS:
                    advertiseFlag = scanRecord[currentPos] & 0xFF;
                    break;
                case DATA_TYPE_SERVICE_UUIDS_16_BIT_PARTIAL:
                case DATA_TYPE_SERVICE_UUIDS_16_BIT_COMPLETE:
                    parseServiceUuid(scanRecord, currentPos, dataLength, BluetoothUuid.UUID_BYTES_16_BIT, serviceUuids);
                    break;
                case DATA_TYPE_SERVICE_UUIDS_32_BIT_PARTIAL:
                case DATA_TYPE_SERVICE_UUIDS_32_BIT_COMPLETE:
                    parseServiceUuid(scanRecord, currentPos, dataLength, BluetoothUuid.UUID_BYTES_32_BIT, serviceUuids);
                    break;
                case DATA_TYPE_SERVICE_UUIDS_128_BIT_PARTIAL:
                case DATA_TYPE_SERVICE_UUIDS_128_BIT_COMPLETE:
                    parseServiceUuid(scanRecord, currentPos, dataLength, BluetoothUuid.UUID_BYTES_128_BIT, serviceUuids);
                    break;
                case DATA_TYPE_LOCAL_NAME_SHORT:
                case DATA_TYPE_LOCAL_NAME_COMPLETE:
                    localName = new String(extractBytes(scanRecord, currentPos, dataLength));
                    break;
                case DATA_TYPE_TX_POWER_LEVEL:
                    txPowerLevel = scanRecord[currentPos];
                    break;
                case DATA_TYPE_SERVICE_DATA:
                    // The first two bytes of the service data are service data UUID in little
                    // endian. The rest bytes are service data.
                    int serviceUuidLength = BluetoothUuid.UUID_BYTES_16_BIT;
                    byte[] serviceDataUuidBytes = extractBytes(scanRecord, currentPos, serviceUuidLength);
                    ParcelUuid serviceDataUuid = BluetoothUuid.parseUuidFrom(serviceDataUuidBytes);
                    byte[] serviceDataArray = extractBytes(scanRecord, currentPos + serviceUuidLength, dataLength - serviceUuidLength);
                    serviceData.put(serviceDataUuid, serviceDataArray);
                    break;
                case DATA_TYPE_MANUFACTURER_SPECIFIC_DATA:
                    // The first two bytes of the manufacturer specific data are
                    // manufacturer ids in little endian.
                    int manufacturerId = ((scanRecord[currentPos + 1] & 0xFF) << 8) + (scanRecord[currentPos] & 0xFF);
                    byte[] manufacturerDataBytes = extractBytes(scanRecord, currentPos + 2, dataLength - 2);
                    manufacturerData.put(manufacturerId, manufacturerDataBytes);
                    break;
                default:
                    // Just ignore, we don't handle such data type.
                    break;
            }
            currentPos += dataLength;
        }
        if (serviceUuids.isEmpty()) {
            serviceUuids = null;
        }
        return new ScanRecord(serviceUuids, manufacturerData, serviceData, advertiseFlag, txPowerLevel, localName, scanRecord);
    } catch (Exception e) {
        Log.e(TAG, "unable to parse scan record: " + Arrays.toString(scanRecord));
        // and return an empty record with raw scanRecord bytes in results
        return new ScanRecord(null, null, null, -1, Integer.MIN_VALUE, null, scanRecord);
    }
}

Example 7 with ParcelUuid

use of android.os.ParcelUuid in project platform_frameworks_base by android.

the class BluetoothUuid method parseUuidFrom.

/**
     * Parse UUID from bytes. The {@code uuidBytes} can represent a 16-bit, 32-bit or 128-bit UUID,
     * but the returned UUID is always in 128-bit format.
     * Note UUID is little endian in Bluetooth.
     *
     * @param uuidBytes Byte representation of uuid.
     * @return {@link ParcelUuid} parsed from bytes.
     * @throws IllegalArgumentException If the {@code uuidBytes} cannot be parsed.
     */
public static ParcelUuid parseUuidFrom(byte[] uuidBytes) {
    if (uuidBytes == null) {
        throw new IllegalArgumentException("uuidBytes cannot be null");
    }
    int length = uuidBytes.length;
    if (length != UUID_BYTES_16_BIT && length != UUID_BYTES_32_BIT && length != UUID_BYTES_128_BIT) {
        throw new IllegalArgumentException("uuidBytes length invalid - " + length);
    }
    // Construct a 128 bit UUID.
    if (length == UUID_BYTES_128_BIT) {
        ByteBuffer buf = ByteBuffer.wrap(uuidBytes).order(ByteOrder.LITTLE_ENDIAN);
        long msb = buf.getLong(8);
        long lsb = buf.getLong(0);
        return new ParcelUuid(new UUID(msb, lsb));
    }
    // For 16 bit and 32 bit UUID we need to convert them to 128 bit value.
    // 128_bit_value = uuid * 2^96 + BASE_UUID
    long shortUuid;
    if (length == UUID_BYTES_16_BIT) {
        shortUuid = uuidBytes[0] & 0xFF;
        shortUuid += (uuidBytes[1] & 0xFF) << 8;
    } else {
        shortUuid = uuidBytes[0] & 0xFF;
        shortUuid += (uuidBytes[1] & 0xFF) << 8;
        shortUuid += (uuidBytes[2] & 0xFF) << 16;
        shortUuid += (uuidBytes[3] & 0xFF) << 24;
    }
    long msb = BASE_UUID.getUuid().getMostSignificantBits() + (shortUuid << 32);
    long lsb = BASE_UUID.getUuid().getLeastSignificantBits();
    return new ParcelUuid(new UUID(msb, lsb));
}

Example 8 with ParcelUuid

use of android.os.ParcelUuid in project platform_frameworks_base by android.

the class BluetoothGattCharacteristic method writeToParcel.

public void writeToParcel(Parcel out, int flags) {
    out.writeParcelable(new ParcelUuid(mUuid), 0);
    out.writeInt(mInstance);
    out.writeInt(mProperties);
    out.writeInt(mPermissions);
    out.writeInt(mKeySize);
    out.writeInt(mWriteType);
    out.writeTypedList(mDescriptors);
}

Example 9 with ParcelUuid

use of android.os.ParcelUuid in project platform_frameworks_base by android.

the class BluetoothGattDescriptor method writeToParcel.

public void writeToParcel(Parcel out, int flags) {
    out.writeParcelable(new ParcelUuid(mUuid), 0);
    out.writeInt(mInstance);
    out.writeInt(mPermissions);
}

Example 10 with ParcelUuid

use of android.os.ParcelUuid in project platform_frameworks_base by android.

the class BluetoothGattService method writeToParcel.

@Override
public void writeToParcel(Parcel out, int flags) {
    out.writeParcelable(new ParcelUuid(mUuid), 0);
    out.writeInt(mInstanceId);
    out.writeInt(mServiceType);
    out.writeTypedList(mCharacteristics);
    ArrayList<BluetoothGattIncludedService> includedServices = new ArrayList<BluetoothGattIncludedService>(mIncludedServices.size());
    for (BluetoothGattService s : mIncludedServices) {
        includedServices.add(new BluetoothGattIncludedService(s.getUuid(), s.getInstanceId(), s.getType()));
    }
    out.writeTypedList(includedServices);
}