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/*
* libgato - A GATT/ATT library for use with Bluez
*
* Copyright (C) 2013 Javier S. Pedro <maemo@javispedro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <QtCore/QDataStream>
#include "helpers.h"
static QByteArray reverse(const QByteArray &ba)
{
int size = ba.size();
QByteArray r(size, Qt::Uninitialized);
for (int i = 0; i < size; i++) {
r[i] = ba[size - i - 1];
}
return r;
}
GatoUUID bytearray_to_gatouuid(const QByteArray &ba)
{
switch (ba.size()) {
case 2:
return GatoUUID(read_le<quint16>(ba.constData()));
case 4:
return GatoUUID(read_le<quint32>(ba.constData()));
case 16:
// For some reason, Bluetooth UUIDs use "reversed big endian" order.
return GatoUUID(QUuid::fromRfc4122(reverse(ba)));
default:
return GatoUUID();
}
}
QByteArray gatouuid_to_bytearray(const GatoUUID &uuid, bool use_uuid16, bool use_uuid32)
{
if (use_uuid16) {
quint16 uuid16 = uuid.toUInt16(&use_uuid16);
if (use_uuid16) {
QByteArray bytes(sizeof(quint16), Qt::Uninitialized);
write_le(uuid16, bytes.data());
return bytes;
}
}
if (use_uuid32) {
quint32 uuid32 = uuid.toUInt32(&use_uuid32);
if (use_uuid32) {
QByteArray bytes(sizeof(quint32), Qt::Uninitialized);
write_le(uuid32, bytes.data());
return bytes;
}
}
return reverse(uuid.toRfc4122());
}
void write_gatouuid(QDataStream &s, const GatoUUID &uuid, bool use_uuid16, bool use_uuid32)
{
QByteArray bytes = gatouuid_to_bytearray(uuid, use_uuid16, use_uuid32);
s.writeRawData(bytes.constData(), bytes.size());
}
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