path: root/framework/java/android/bluetooth/BluetoothGattServerCallback.java

/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * 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.
 *
 * Changes from Qualcomm Innovation Center are provided under the following license:
 *
 * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted (subject to the limitations in the
 * disclaimer below) provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following
 * disclaimer in the documentation and/or other materials provided
 * with the distribution.
 *
 * Neither the name of Qualcomm Innovation Center, Inc. nor the names of its
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
 * GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
 * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
 *
 */

package android.bluetooth;

/**
 * This abstract class is used to implement {@link BluetoothGattServer} callbacks.
 */
public abstract class BluetoothGattServerCallback {

    /**
     * Callback indicating when a remote device has been connected or disconnected.
     *
     * @param device Remote device that has been connected or disconnected.
     * @param status Status of the connect or disconnect operation.
     * @param newState Returns the new connection state. Can be one of {@link
     * BluetoothProfile#STATE_DISCONNECTED} or {@link BluetoothProfile#STATE_CONNECTED}
     */
    public void onConnectionStateChange(BluetoothDevice device, int status,
            int newState) {
    }

    /**
     * Indicates whether a local service has been added successfully.
     *
     * @param status Returns {@link BluetoothGatt#GATT_SUCCESS} if the service was added
     * successfully.
     * @param service The service that has been added
     */
    public void onServiceAdded(int status, BluetoothGattService service) {
    }

    /**
     * A remote client has requested to read a local characteristic.
     *
     * <p>An application must call {@link BluetoothGattServer#sendResponse}
     * to complete the request.
     *
     * @param device The remote device that has requested the read operation
     * @param requestId The Id of the request
     * @param offset Offset into the value of the characteristic
     * @param characteristic Characteristic to be read
     */
    public void onCharacteristicReadRequest(BluetoothDevice device, int requestId,
            int offset, BluetoothGattCharacteristic characteristic) {
    }

    /**
     * A remote client has requested to write to a local characteristic.
     *
     * <p>An application must call {@link BluetoothGattServer#sendResponse}
     * to complete the request.
     *
     * @param device The remote device that has requested the write operation
     * @param requestId The Id of the request
     * @param characteristic Characteristic to be written to.
     * @param preparedWrite true, if this write operation should be queued for later execution.
     * @param responseNeeded true, if the remote device requires a response
     * @param offset The offset given for the value
     * @param value The value the client wants to assign to the characteristic
     */
    public void onCharacteristicWriteRequest(BluetoothDevice device, int requestId,
            BluetoothGattCharacteristic characteristic,
            boolean preparedWrite, boolean responseNeeded,
            int offset, byte[] value) {
    }

    /**
     * A remote client has requested to read a local descriptor.
     *
     * <p>An application must call {@link BluetoothGattServer#sendResponse}
     * to complete the request.
     *
     * @param device The remote device that has requested the read operation
     * @param requestId The Id of the request
     * @param offset Offset into the value of the characteristic
     * @param descriptor Descriptor to be read
     */
    public void onDescriptorReadRequest(BluetoothDevice device, int requestId,
            int offset, BluetoothGattDescriptor descriptor) {
    }

    /**
     * A remote client has requested to write to a local descriptor.
     *
     * <p>An application must call {@link BluetoothGattServer#sendResponse}
     * to complete the request.
     *
     * @param device The remote device that has requested the write operation
     * @param requestId The Id of the request
     * @param descriptor Descriptor to be written to.
     * @param preparedWrite true, if this write operation should be queued for later execution.
     * @param responseNeeded true, if the remote device requires a response
     * @param offset The offset given for the value
     * @param value The value the client wants to assign to the descriptor
     */
    public void onDescriptorWriteRequest(BluetoothDevice device, int requestId,
            BluetoothGattDescriptor descriptor,
            boolean preparedWrite, boolean responseNeeded,
            int offset, byte[] value) {
    }

    /**
     * Execute all pending write operations for this device.
     *
     * <p>An application must call {@link BluetoothGattServer#sendResponse}
     * to complete the request.
     *
     * @param device The remote device that has requested the write operations
     * @param requestId The Id of the request
     * @param execute Whether the pending writes should be executed (true) or cancelled (false)
     */
    public void onExecuteWrite(BluetoothDevice device, int requestId, boolean execute) {
    }

    /**
     * Callback invoked when a notification or indication has been sent to
     * a remote device.
     *
     * <p>When multiple notifications are to be sent, an application must
     * wait for this callback to be received before sending additional
     * notifications.
     *
     * @param device The remote device the notification has been sent to
     * @param status {@link BluetoothGatt#GATT_SUCCESS} if the operation was successful
     */
    public void onNotificationSent(BluetoothDevice device, int status) {
    }

    /**
     * Callback indicating the MTU for a given device connection has changed.
     *
     * <p>This callback will be invoked if a remote client has requested to change
     * the MTU for a given connection.
     *
     * @param device The remote device that requested the MTU change
     * @param mtu The new MTU size
     */
    public void onMtuChanged(BluetoothDevice device, int mtu) {
    }

    /**
     * Callback triggered as result of {@link BluetoothGattServer#setPreferredPhy}, or as a result
     * of remote device changing the PHY.
     *
     * @param device The remote device
     * @param txPhy the transmitter PHY in use. One of {@link BluetoothDevice#PHY_LE_1M}, {@link
     * BluetoothDevice#PHY_LE_2M}, and {@link BluetoothDevice#PHY_LE_CODED}
     * @param rxPhy the receiver PHY in use. One of {@link BluetoothDevice#PHY_LE_1M}, {@link
     * BluetoothDevice#PHY_LE_2M}, and {@link BluetoothDevice#PHY_LE_CODED}
     * @param status Status of the PHY update operation. {@link BluetoothGatt#GATT_SUCCESS} if the
     * operation succeeds.
     */
    public void onPhyUpdate(BluetoothDevice device, int txPhy, int rxPhy, int status) {
    }

    /**
     * Callback triggered as result of {@link BluetoothGattServer#readPhy}
     *
     * @param device The remote device that requested the PHY read
     * @param txPhy the transmitter PHY in use. One of {@link BluetoothDevice#PHY_LE_1M}, {@link
     * BluetoothDevice#PHY_LE_2M}, and {@link BluetoothDevice#PHY_LE_CODED}
     * @param rxPhy the receiver PHY in use. One of {@link BluetoothDevice#PHY_LE_1M}, {@link
     * BluetoothDevice#PHY_LE_2M}, and {@link BluetoothDevice#PHY_LE_CODED}
     * @param status Status of the PHY read operation. {@link BluetoothGatt#GATT_SUCCESS} if the
     * operation succeeds.
     */
    public void onPhyRead(BluetoothDevice device, int txPhy, int rxPhy, int status) {
    }

    /**
     * Callback indicating the connection parameters were updated.
     *
     * @param device The remote device involved
     * @param interval Connection interval used on this connection, 1.25ms unit. Valid range is from
     * 6 (7.5ms) to 3200 (4000ms).
     * @param latency Worker latency for the connection in number of connection events. Valid range
     * is from 0 to 499
     * @param timeout Supervision timeout for this connection, in 10ms unit. Valid range is from 10
     * (0.1s) to 3200 (32s)
     * @param status {@link BluetoothGatt#GATT_SUCCESS} if the connection has been updated
     * successfully
     * @hide
     */
    public void onConnectionUpdated(BluetoothDevice device, int interval, int latency, int timeout,
            int status) {
    }

    /**
     * Callback indicating the LE connection's subrate parameters were updated.
     *
     * @param device The remote device involved
     * @param subrate factor for the LE connection.
     * @param peripheral latency for the LE connection in number of subrated connection events.
     * Valid range is from 0 to 499.
     * @param continuation number. Valid range is from 0 to 499.
     * @param timeout Supervision timeout for this connection, in 10ms unit. Valid range is from 10
     * (0.1s) to 3200 (32s)
     * @param status {@link BluetoothGatt#GATT_SUCCESS} if LE connection subrating has been changed
     * successfully.
     * @hide
     */
    public void onSubrateChange(BluetoothDevice device, int subrateFactor, int latency, int contNum,
            int timeout, int status) {
    }

}