/**
* Digital Voice Modem - Host Software
* GPLv2 Open Source. Use is subject to license terms.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* @package DVM / Host Software
*
*/
//
// Based on code from the MMDVMHost project. (https://github.com/g4klx/MMDVMHost)
// Licensed under the GPLv2 License (https://opensource.org/licenses/GPL-2.0)
//
/*
*   Copyright (C) 2015,2016 by Jonathan Naylor G4KLX
*
*   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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "Defines.h"
#include "dmr/DMRDefines.h"
#include "dmr/Sync.h"

using namespace dmr;

#include <cstdio>
#include <cassert>
#include <cstring>

// ---------------------------------------------------------------------------
//  Static Class Members
// ---------------------------------------------------------------------------

/// <summary>
/// Helper to append DMR data sync bytes to the passed buffer.
/// </summary>
/// <param name="data">Buffer to append sync bytes to.</param>
/// <param name="duplex">Flag indicating whether this is duplex operation.</param>
void Sync::addDMRDataSync(uint8_t* data, bool duplex)
{
    assert(data != nullptr);

    if (duplex) {
        for (uint32_t i = 0U; i < 7U; i++)
            data[i + 13U] = (data[i + 13U] & ~SYNC_MASK[i]) | BS_SOURCED_DATA_SYNC[i];
    }
    else {
        for (uint32_t i = 0U; i < 7U; i++)
            data[i + 13U] = (data[i + 13U] & ~SYNC_MASK[i]) | MS_SOURCED_DATA_SYNC[i];
    }
}

/// <summary>
/// Helper to append DMR voice sync bytes to the passed buffer.
/// </summary>
/// <param name="data">Buffer to append sync bytes to.</param>
/// <param name="duplex">Flag indicating whether this is duplex operation.</param>
void Sync::addDMRAudioSync(uint8_t* data, bool duplex)
{
    assert(data != nullptr);

    if (duplex) {
        for (uint32_t i = 0U; i < 7U; i++)
            data[i + 13U] = (data[i + 13U] & ~SYNC_MASK[i]) | BS_SOURCED_AUDIO_SYNC[i];
    }
    else {
        for (uint32_t i = 0U; i < 7U; i++)
            data[i + 13U] = (data[i + 13U] & ~SYNC_MASK[i]) | MS_SOURCED_AUDIO_SYNC[i];
    }
}
