///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel                                                   //
// Copyright (C) 2015-2020 Edouard Griffiths, F4EXB <f4exb06@gmail.com>          //
// Copyright (C) 2015 John Greb <hexameron@spam.no>                              //
//                                                                               //
// 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 as version 3 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 V3 for more details.                               //
//                                                                               //
// You should have received a copy of the GNU General Public License             //
// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
///////////////////////////////////////////////////////////////////////////////////

#include <QDebug>

#include "xtrx_api.h"
#include "devicextrxparam.h"
#include "devicextrx.h"

const uint32_t DeviceXTRX::m_lnaTbl[m_nbGains] = {
        0,  0,  0,  1,  1,  1,  2,  2,  2,  3,  3,  3,  4,  4,  4,  5,
        5,  5,  6,  6,  6,  7,  7,  7,  8,  9,  10, 11, 11, 11, 11, 11,
        11, 11, 11, 11, 11, 11, 11, 11, 12, 13, 14, 14, 14, 14, 14, 14,
        14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
        14, 14, 14, 14, 14, 14, 14, 14, 14, 14
};

const uint32_t DeviceXTRX::m_pgaTbl[m_nbGains] = {
        0,  1,  2,  0,  1,  2,  0,  1,  2,  0,  1,  2,  0,  1,  2,  0,
        1,  2,  0,  1,  2,  0,  1,  2,  0,  0,  0,  0,  1,  2,  3,  4,
        5,  6,  7,  8,  9,  10, 11, 12, 12, 12, 12, 4,  5,  6,  7,  8,
        9,  10, 11, 12, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
        22, 23, 24, 25, 26, 27, 28, 29, 30, 31
};

DeviceXTRX::DeviceXTRX() :
    m_dev(0),
    m_inputRate(0),
    m_outputRate(0),
    m_masterRate(0),
    m_clockGen(0),
    m_actualInputRate(0),
    m_actualOutputRate(0)
{}

DeviceXTRX::~DeviceXTRX()
{
    close();
}

bool DeviceXTRX::open(const char* deviceStr)
{
    int res;
    qDebug("DeviceXTRX::open: serial: %s", (const char *) deviceStr);

    res = xtrx_open(deviceStr, XTRX_O_RESET | 4, &m_dev);

    if (res)
    {
        qCritical() << "DeviceXTRX::open: cannot open device " << deviceStr;
        return false;
    }

    return true;
}

void DeviceXTRX::close()
{
    if (m_dev)
    {
        xtrx_close(m_dev);
        m_dev = 0;
    }
}

void DeviceXTRX::enumOriginDevices(const QString& hardwareId, PluginInterface::OriginDevices& originDevices)
{
    xtrx_device_info_t devs[32];
    int res = xtrx_discovery(devs, 32);
    int i;

    for (i = 0; i < res; i++)
    {
        DeviceXTRXParams XTRXParams;
        QString displayableName(QString("XTRX[%1:$1] %2").arg(i).arg(devs[i].uniqname));

        originDevices.append(PluginInterface::OriginDevice(
            displayableName,
            hardwareId,
            QString(devs[i].uniqname),
            i,
            XTRXParams.m_nbRxChannels,
            XTRXParams.m_nbTxChannels
        ));
    }
}

void DeviceXTRX::getAutoGains(uint32_t autoGain, uint32_t& lnaGain, uint32_t& tiaGain, uint32_t& pgaGain)
{
    uint32_t value = autoGain + 12 > 73 ? 73 : autoGain + 12;

    if (value > 51) {
        tiaGain = 2;
    } else if (value > 42) {
        tiaGain = 1;
    } else {
        tiaGain = 0;
    }

    lnaGain = m_lnaTbl[value];
    pgaGain = m_pgaTbl[value];
}

double DeviceXTRX::setSamplerate(double rate, double master, bool output)
{
    m_masterRate = master;

    if (output) {
        m_outputRate = rate;
    } else {
        m_inputRate = rate;
    }

    int res = xtrx_set_samplerate(
        m_dev,
        m_masterRate,
        m_inputRate,
        m_outputRate,
        XTRX_SAMPLERATE_FORCE_UPDATE,
        &m_clockGen,
        &m_actualInputRate,
        &m_actualOutputRate
    );

    if (res)
    {
        qCritical("DeviceXTRX::set_samplerate: Unable to set %s samplerate, m_masterRate: %f, m_inputRate: %f, m_outputRate: %f, error=%d",
                output ? "output" : "input", m_masterRate, m_inputRate, m_outputRate, res);
        return 0;
    }
    else
    {
        qDebug() << "DeviceXTRX::set_samplerate: sample rate set: "
                << "output: "<< output
                << "m_masterRate: " << m_masterRate
                << "m_inputRate: " << m_inputRate
                << "m_outputRate: " << m_outputRate
                << "m_clockGen: " << m_clockGen
                << "m_actualInputRate: " << m_actualInputRate
                << "m_actualOutputRate: " << m_actualOutputRate;
    }

    if (output) {
        return m_outputRate;
    }

    return m_inputRate;
}

bool DeviceXTRX::setSamplerate(double rate, uint32_t log2Decim, uint32_t log2Interp, bool output)
{
    double master, rxRate, txRate;

    if (output)
    {
        master = (log2Interp == 0) ? 0 : (rate * 4 * (1 << log2Interp));
        rxRate = (rate * 4 * (1 << log2Interp)) /  (4 * (1 << log2Decim));
        txRate = rate;
    }
    else
    {
        master = (log2Decim == 0) ? 0 : (rate * 4 * (1 << log2Decim));
        rxRate = rate;
        txRate = (rate * 4 * (1 << log2Decim)) /  (4 * (1 << log2Interp));
    }

    m_masterRate = master;
    m_inputRate = rxRate;
    m_outputRate = txRate;

    int res = xtrx_set_samplerate(
        m_dev,
        master,
        rxRate,
        txRate,
        XTRX_SAMPLERATE_FORCE_UPDATE,
        &m_clockGen,
        &m_actualInputRate,
        &m_actualOutputRate
    );

    qDebug() << "DeviceXTRX::setSamplerate: sample rate set: "
        << "rate: " << rate
        << "log2Decim: " << log2Decim
        << "log2Interp: " << log2Interp
        << "output: " << output
        << "res: "<< res
        << "m_masterRate: " << m_masterRate
        << "m_inputRate: " << m_inputRate
        << "m_outputRate: " << m_outputRate
        << "m_clockGen: " << m_clockGen
        << "m_actualInputRate: " << m_actualInputRate
        << "m_actualOutputRate: " << m_actualOutputRate;

    return !(res < 0);
}