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/*
* Author: Petre Eftime <petre.p.eftime@intel.com>
* Copyright (c) 2015 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#pragma once
#include "BluetoothObject.hpp"
#include <vector>
#include <functional>
/* Forward declaration of types */
struct _Object;
typedef struct _Object Object;
struct _GattDescriptor1;
typedef struct _GattDescriptor1 GattDescriptor1;
/**
* Provides access to Bluetooth GATT descriptor. Follows the BlueZ adapter API
* available at: http://git.kernel.org/cgit/bluetooth/bluez.git/tree/doc/gatt-api.txt
*/
class tinyb::BluetoothGattDescriptor: public BluetoothObject
{
friend class tinyb::BluetoothGattCharacteristic;
friend class tinyb::BluetoothManager;
friend class tinyb::BluetoothEventManager;
friend class tinyb::BluetoothNotificationHandler;
private:
GattDescriptor1 *object;
protected:
BluetoothGattDescriptor(GattDescriptor1 *object);
static std::unique_ptr<BluetoothGattDescriptor> make(Object *object,
BluetoothType type = BluetoothType::GATT_DESCRIPTOR,
std::string *name = nullptr,
std::string *identifier = nullptr,
BluetoothObject *parent = nullptr);
std::function<void(std::vector<unsigned char> &)> value_changed_callback;
public:
static std::string java_class() {
return std::string(JAVA_DBUS_PACKAGE "/DBusGattDescriptor");
}
static BluetoothType class_type() { return BluetoothType::GATT_DESCRIPTOR; }
virtual std::string get_java_class() const;
virtual std::string get_class_name() const;
virtual std::string get_object_path() const;
virtual BluetoothType get_bluetooth_type() const;
BluetoothGattDescriptor(const BluetoothGattDescriptor &object);
~BluetoothGattDescriptor();
virtual BluetoothGattDescriptor *clone() const;
/* D-Bus method calls: */
/** Reads the value of this descriptor
* @return A vector<uchar> containing data from this descriptor
*/
std::vector<unsigned char> read_value (
uint16_t offset = 0
);
/** Writes the value of this descriptor.
* @param[in] arg_value The data as vector<uchar>
* to be written packed in a GBytes struct
* @return TRUE if value was written succesfully
*/
bool write_value (
const std::vector<unsigned char> &arg_value,
uint16_t offset = 0
);
/**
* Enables notifications for changes of the value of the descriptor and
* triggers the callback when the value changes.
* Uninstalls the previous value callback, if any was installed.
* @param callback A function of the form
* void(BluetoothGattDescriptor &, std::vector<unsigned char> &, void *), where
* BluetoothGattDescriptor& is the adapter for which the callback was
* set, vector<unsigned char>& will contain the new value of the powered property and void*
* contains optional, user set data
* @param userdata The data which will be delivered to the callback when it is triggered.
* Memory of this parameter must be managed by user.
*/
bool enable_value_notifications(
std::function<void(BluetoothGattDescriptor &descriptor, std::vector<unsigned char> &value,void *userdata)> callback,
void *user_data);
/**
* Enables notifications (including at BLE level) for changes of the
* value of the characteristic and triggers the callback when the
* value changes.
* Uninstalls the previous powered callback, if any was installed.
* @param callback A function of the form void(std::vector<unsigned char> &), where
* std::vector<unsigned char>& will contain the new value
*/
bool enable_value_notifications(
std::function<void(std::vector<unsigned char> &value)> callback);
bool disable_value_notifications();
/* D-Bus property accessors: */
/** Get the UUID of this descriptor.
* @return The 128 byte UUID of this descriptor, NULL if an error occurred
*/
std::string get_uuid ();
/** Returns the characteristic to which this descriptor belongs to.
* @return The characteristic.
*/
BluetoothGattCharacteristic get_characteristic ();
/** Returns the cached value of this descriptor, if any.
* @return The cached value of this descriptor.
*/
std::vector<unsigned char> get_value ();
};
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