/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 * vim: set ts=8 sts=4 et sw=4 tw=99:
 *
 * SleepLib PRS1 Loader Implementation
 *
 * Copyright (c) 2011-2014 Mark Watkins <jedimark@users.sourceforge.net>
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License. See the file COPYING in the main directory of the Linux
 * distribution for more details. */

#include <QApplication>
#include <QString>
#include <QDateTime>
#include <QDir>
#include <QFile>
#include <QMessageBox>
#include <QProgressBar>
#include <QDebug>
#include <cmath>
#include "SleepLib/schema.h"
#include "prs1_loader.h"
#include "SleepLib/session.h"
#include "SleepLib/calcs.h"


const int PRS1_MAGIC_NUMBER = 2;
//const int PRS1_SUMMARY_FILE=1;
//const int PRS1_EVENT_FILE=2;
//const int PRS1_WAVEFORM_FILE=5;


//********************************************************************************************
/// IMPORTANT!!!
//********************************************************************************************
// Please INCREMENT the prs1_data_version in prs1_loader.h when making changes to this loader
// that change loader behaviour or modify channels.
//********************************************************************************************


extern QProgressBar *qprogress;

QHash<int, QString> ModelMap;

#define PRS1_CRC_CHECK

#ifdef PRS1_CRC_CHECK
typedef quint16 crc_t;

static const crc_t crc_table[256] = {
    0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
    0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
    0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
    0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
    0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
    0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
    0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
    0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
    0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
    0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
    0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
    0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
    0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
    0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
    0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
    0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
    0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
    0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
    0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
    0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
    0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
    0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
    0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
    0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
    0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
    0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
    0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
    0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
    0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
    0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
    0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
    0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
};

crc_t CRC16(const unsigned char *data, size_t data_len)
{
    crc_t crc = 0;
    unsigned int tbl_idx;

    while (data_len--) {
        tbl_idx = (crc ^ *data) & 0xff;
        crc = (crc_table[tbl_idx] ^ (crc >> 8)) & 0xffff;

        data++;
    }

    return crc & 0xffff;
}
#endif

PRS1::PRS1(Profile *p, MachineID id): CPAP(p, id)
{
    m_class = prs1_class_name;
}
PRS1::~PRS1()
{

}


/*! \struct WaveHeaderList
    \brief Used in PRS1 Waveform Parsing */
struct WaveHeaderList {
    quint16 interleave;
    quint8  sample_format;
    WaveHeaderList(quint16 i, quint8 f) { interleave = i; sample_format = f; }
};


PRS1Loader::PRS1Loader()
{
    //genCRCTable();
    m_buffer = nullptr;
}

PRS1Loader::~PRS1Loader()
{
}
Machine *PRS1Loader::CreateMachine(QString serial, Profile *profile)
{
    if (!profile) {
        return nullptr;
    }

    qDebug() << "Create Machine " << serial;

    QList<Machine *> ml = profile->GetMachines(MT_CPAP);
    bool found = false;
    QList<Machine *>::iterator i;
    Machine *m = nullptr;

    for (i = ml.begin(); i != ml.end(); i++) {
        if (((*i)->GetClass() == STR_MACH_PRS1) && ((*i)->properties[STR_PROP_Serial] == serial)) {
            PRS1List[serial] = *i; //static_cast<CPAP *>(*i);
            found = true;
            m = *i;
            break;
        }
    }

    if (!found) {
        m = new PRS1(profile, 0);
    }

    m->properties[STR_PROP_Brand] = "Philips Respironics";
    m->properties[STR_PROP_Series] = "System One";

    if (found) {
        return m;
    }

    PRS1List[serial] = m;
    profile->AddMachine(m);

    m->properties[STR_PROP_Serial] = serial;
    m->properties[STR_PROP_DataVersion] = QString::number(prs1_data_version);

    QString path = "{" + STR_GEN_DataFolder + "}/" + m->GetClass() + "_" + serial + "/";
    m->properties[STR_PROP_Path] = path;
    m->properties[STR_PROP_BackupPath] = path + "Backup/";

    return m;
}
bool isdigit(QChar c)
{
    if ((c >= '0') && (c <= '9')) { return true; }

    return false;
}

const QString PR_STR_PSeries = "P-Series";


// Tests path to see if it has (what looks like) a valid PRS1 folder structure
bool PRS1Loader::Detect(const QString & path)
{
    QString newpath = path;

    newpath.replace("\\", "/");

    if (!newpath.endsWith("/" + PR_STR_PSeries)) {
        newpath = path + "/" + PR_STR_PSeries;
    }

    QDir dir(newpath);

    if ((!dir.exists() || !dir.isReadable())) {
        return false;
    }
    qDebug() << "PRS1Loader::Detect path=" << newpath;

    QFile lastfile(newpath+"/last.txt");
    if (!lastfile.exists()) {
        return false;
    }

    if (!lastfile.open(QIODevice::ReadOnly)) {
        qDebug() << "PRS1Loader: last.txt exists but I couldn't open it!";
        return false;
    }

    QString last = lastfile.readLine(64);
    last = last.trimmed();
    lastfile.close();

    QFile f(newpath+"/"+last);
    if (!f.exists()) {
        qDebug() << "in PRS1Loader::Detect():" << last << "does not exist, despite last.txt saying it does";
        return false;
    }
    // newpath is a valid path
    return true;
}

int PRS1Loader::Open(QString &path, Profile *profile)
{
    QString newpath;
    path = path.replace("\\", "/");

    if (path.endsWith("/" + PR_STR_PSeries)) {
        newpath = path;
    } else {
        newpath = path + "/" + PR_STR_PSeries;
    }

    qDebug() << "PRS1Loader::Open path=" << newpath;

    QDir dir(newpath);

    if ((!dir.exists() || !dir.isReadable())) {
        return 0;
    }

    dir.setFilter(QDir::NoDotAndDotDot | QDir::Dirs | QDir::Files | QDir::Hidden | QDir::NoSymLinks);
    dir.setSorting(QDir::Name);
    QFileInfoList flist = dir.entryInfoList();

    QList<QString> SerialNumbers;
    QList<QString>::iterator sn;

    for (int i = 0; i < flist.size(); i++) {
        QFileInfo fi = flist.at(i);
        QString filename = fi.fileName();

        if ((filename[0] == 'P') && (isdigit(filename[1])) && (isdigit(filename[2]))) {
            SerialNumbers.push_back(filename);
        } else if (filename.toLower() == "last.txt") { // last.txt points to the current serial number
            QString file = fi.canonicalFilePath();
            QFile f(file);

            if (!fi.isReadable()) {
                qDebug() << "PRS1Loader: last.txt exists but I couldn't read it!";
                continue;
            }

            if (!f.open(QIODevice::ReadOnly)) {
                qDebug() << "PRS1Loader: last.txt exists but I couldn't open it!";
                continue;
            }

            last = f.readLine(64);
            last = last.trimmed();
            f.close();
        }
    }

    if (SerialNumbers.empty()) { return 0; }

    m_buffer = new unsigned char [max_load_buffer_size]; //allocate once and reuse.
    Machine *m;

    for (sn = SerialNumbers.begin(); sn != SerialNumbers.end(); sn++) {
        QString s = *sn;
        m = CreateMachine(s, profile);

        try {
            if (m) {
                OpenMachine(m, newpath + "/" + (*sn), profile);
            }
        } catch (OneTypePerDay e) {
            Q_UNUSED(e)
            profile->DelMachine(m);
            PRS1List.erase(PRS1List.find(s));
            QMessageBox::warning(nullptr, QObject::tr("Import Error"),
                                 QObject::tr("This Machine Record cannot be imported in this profile.\nThe Day records overlap with already existing content."),
                                 QMessageBox::Ok);
            delete m;
        }
    }

    delete [] m_buffer;
    return PRS1List.size();
}

bool PRS1Loader::ParseProperties(Machine *m, QString filename)
{
    QFile f(filename);

    if (!f.open(QIODevice::ReadOnly)) {
        return false;
    }

    QString line;
    QHash<QString, QString> prop;

    QString s = f.readLine();
    QChar sep = '=';
    QString key, value;

    while (!f.atEnd()) {
        key = s.section(sep, 0, 0); //BeforeFirst(sep);

        if (key == s) { continue; }

        value = s.section(sep, 1).trimmed(); //AfterFirst(sep).Strip();

        if (value == s) { continue; }

        prop[key] = value;
        s = f.readLine();
    }

    bool ok;
    QString pt = prop["ProductType"];
    int i = pt.toInt(&ok, 16);

    if (ok) {
        if (ModelMap.find(i) != ModelMap.end()) {
            m->properties[STR_PROP_Model] = ModelMap[i];
        }
    }

    if (prop["SerialNumber"] != m->properties[STR_PROP_Serial]) {
        qDebug() << "Serial Number in PRS1 properties.txt doesn't match directory structure";
    } else { prop.erase(prop.find("SerialNumber")); } // already got it stored.

    for (QHash<QString, QString>::iterator i = prop.begin(); i != prop.end(); i++) {
        m->properties[i.key()] = i.value();
    }

    f.close();
    return true;
}

int PRS1Loader::OpenMachine(Machine *m, QString path, Profile *profile)
{

    qDebug() << "Opening PRS1 " << path;
    QDir dir(path);

    if (!dir.exists() || (!dir.isReadable())) {
        return 0;
    }


    dir.setFilter(QDir::NoDotAndDotDot | QDir::Dirs | QDir::Files | QDir::Hidden | QDir::NoSymLinks);
    dir.setSorting(QDir::Name);
    QFileInfoList flist = dir.entryInfoList();

    QString filename;

    if (qprogress) { qprogress->setValue(0); }

    QStringList paths;

    for (int i = 0; i < flist.size(); i++) {
        QFileInfo fi = flist.at(i);
        filename = fi.fileName();

        if ((filename[0].toLower() == 'p') && (isdigit(filename[1]))) {
            // p0, p1, p2.. etc.. folders contain the session data
            paths.push_back(fi.canonicalFilePath());
        } else if (filename.toLower() == "properties.txt") {
            ParseProperties(m, fi.canonicalFilePath());
        } else if (filename.toLower() == "e") {
            // Error files..
            // Reminder: I have been given some info about these. should check it over.
        }
    }

    QString modelstr = m->properties["ModelNumber"];

    if (modelstr.endsWith("P"))
        modelstr.chop(1);

    bool ok;
    int model = modelstr.toInt(&ok);
    if (ok) {
        // Assumption is made here all PRS1 machines less than 450P are not data capable.. this could be wrong one day.
        if ((model < 450)) {
            QMessageBox::information(NULL,
                                     QObject::tr("Non Data Capable Machine"),
                                     QString(QObject::tr("Your Philips Respironics CPAP machine (Model %1) is unfortunately not a data capable model.")+"\n\n"+
                                             QObject::tr("I'm sorry to report that SleepyHead can only track hours of use for this machine.")).
                                     arg(m->properties["ModelNumber"]),QMessageBox::Ok);

        }

        if ((model % 100) >= 60) {
            // 60 series machine warning??
        }

    } else {
        // model number didn't parse.. Meh...
    }

    SessionID sid;
    long ext;
    QHash<SessionID, QStringList> sessfiles;
    int size = paths.size();
    int cnt = 0;

    new_sessions.clear(); // this hash is used by OpenFile

    // for each p0/p1/p2/etc... folder
    for (int p=0; p < size; ++p) {
        dir.setPath(paths.at(p));

        if (!dir.exists() || !dir.isReadable()) { continue; }

        flist = dir.entryInfoList();

        // Scan for individual session files
        for (int i = 0; i < flist.size(); i++) {
            QFileInfo fi = flist.at(i);
            QString ext_s = fi.fileName().section(".", -1);
            QString session_s = fi.fileName().section(".", 0, -2);

            ext = ext_s.toLong(&ok);
            if (!ok) { // not a numerical extension
                continue;
            }

            sid = session_s.toLong(&ok);
            if (!ok) { // not a numerical session ID
                continue;
            }

            if (m->SessionExists(sid)) {
                // Skip already imported session
                continue;
            }

            if ((ext == 1) || (ext == 0)) {
                // Open just the summary files first round and create a session record if succesful
                OpenFile(m, fi.canonicalFilePath());
            } else {
                // and keep the rest of the names for next stage
                sessfiles[sid].push_back(fi.canonicalFilePath());
            }
        }
    }

    cnt = 0;
    size = new_sessions.size();

    // Scan through new sessions and parse event and waveform data
    // NOTE: this function could be multithreaded.
    for (QHash<SessionID, Session *>::iterator it = new_sessions.begin(); it != new_sessions.end(); ++it) {
        sid = it.key();

        if (sessfiles.contains(sid)) {
            for (int j = 0; j < sessfiles[sid].size(); j++) {
                QString name = sessfiles[sid][j];

                if (name.endsWith(".002")) {
                    // Parse event data
                    OpenFile(m, name);
                } else if (name.endsWith(".005")) {
                    // Parse Flow Rate Waveform (and mask pressure if available) data
                    OpenWaveforms(sid, name);
                }
            }
        }

        // sessions are fully loaded here..

        // Update the progress bar.. this could be done better by an emit if MachineLoader was a QObject and an
        // event loop was running.
        if ((++cnt % 10) == 0) {
            if (qprogress) { qprogress->setValue(0.0 + (float(cnt) / float(size) * 100.0)); }

            QApplication::processEvents();
        }
    }

    // strictly can do this in the above loop, but this is cautionary
    cnt = 0;

    // Scan through parsed sessions, do a little cleanup and add to machine object
    for (QHash<SessionID, Session *>::iterator it = new_sessions.begin(); it != new_sessions.end(); ++it) {
        Session *sess = it.value();

        if ((sess->length()) <= 0) {
            //const double ignore_thresh=300.0/3600.0;// Ignore useless sessions under 5 minute
            //if (sess->hours()<=ignore_thresh) {
            qDebug() << "Ignoring empty session" << sess->session();
            SessionID id = sess->session();
            delete sess;
            new_sessions[id] = nullptr;
            continue;
        }

        if (sess->count(CPAP_IPAP) > 0) {
            //sess->summaryCPAP_Mode]!=MODE_ASV)
            if (sess->settings[CPAP_Mode].toInt() != (int)MODE_ASV) {
                sess->settings[CPAP_Mode] = MODE_BIPAP;
            }

            if (sess->settings[CPAP_PresReliefType].toInt() != PR_NONE) {
                sess->settings[CPAP_PresReliefType] = PR_BIFLEX;
            }

            EventDataType min = sess->settings[CPAP_PressureMin].toDouble();
            EventDataType max = sess->settings[CPAP_PressureMax].toDouble();
            sess->settings[CPAP_EPAP] = min;
            sess->settings[CPAP_IPAP] = max;

            sess->settings[CPAP_PS] = max - min;
            sess->settings.erase(sess->settings.find(CPAP_PressureMin));
            sess->settings.erase(sess->settings.find(CPAP_PressureMax));

            sess->m_valuesummary.erase(sess->m_valuesummary.find(CPAP_Pressure));
            sess->m_wavg.erase(sess->m_wavg.find(CPAP_Pressure));
            sess->m_min.erase(sess->m_min.find(CPAP_Pressure));
            sess->m_max.erase(sess->m_max.find(CPAP_Pressure));
            sess->m_gain.erase(sess->m_gain.find(CPAP_Pressure));


        } else {

            if (!sess->settings.contains(CPAP_Pressure) && !sess->settings.contains(CPAP_PressureMin)) {
                sess->settings[CPAP_BrokenSummary] = true;

                //sess->set_last(sess->first());
                if (sess->Min(CPAP_Pressure) == sess->Max(CPAP_Pressure)) {
                    sess->settings[CPAP_Mode] = MODE_CPAP; // no ramp
                } else {
                    sess->settings[CPAP_Mode] = MODE_UNKNOWN;
                }

                //sess->Set("FlexMode",PR_UNKNOWN);
            }

        }

        if (sess->settings[CPAP_Mode].toInt() == (int)MODE_CPAP) {
            //sess->settings[CPAP_PressureMax]=sess->settings[CPAP_PressureMin];
        }

        // set session saved flag so machine::Save() knows it needs saving
        sess->SetChanged(true);

        // Add session to machine record
        m->AddSession(sess, profile);

        // Update the progress bar
        if ((++cnt % 10) == 0) {
            //if (qprogress) qprogress->setValue(33.0+(float(cnt)/float(size)*33.0));
            QApplication::processEvents();
        }

    }

    m->properties[STR_PROP_DataVersion] = QString::number(prs1_data_version);
    m->properties[STR_PROP_LastImported] = QDateTime::currentDateTime().toString(Qt::ISODate);

    // Save any new sessions to disk in our format, updating summaries as it goes..
    m->Save();

    // Set progress bar to completed.
    if (qprogress) { qprogress->setValue(100); }

    // Return number of newly added sessions
    return cnt;
}

//struct PRS1SummaryR5 {
//    quint8 unknown1;
//    quint8 unknown2;
//    quint8 unknown3;
//    quint8 pressure_min;
//    quint8 pressure_max;
//    quint8 unknown;

//    quint32 flags;


//};// __attribute__((packed));

// Family 0 = xPAP
// Family 5 = ASV



bool PRS1Loader::ParseSummary(Machine *mach, qint32 sequence, quint32 timestamp,
                              unsigned char *data, quint16 size, int family, int familyVersion)
{
    if (mach->SessionExists(sequence)) {
        qDebug() << "sessionexists exit";
        return false;
    }

    if (size < 44 - 16) {
        qDebug() << "size exit";
        return false;
    }

    Session *session = new Session(mach, sequence);
    session->really_set_first(qint64(timestamp) * 1000L);
    EventDataType max, min;

    //////////////////////////////////////////////////////////////////////////////////////////
    // ASV Codes (Family 5) Recheck 17/10/2013
    // These are all confirmed off Encore reports

    //cpapmax=EventDataType(data[0x02])/10.0;   // Max Pressure in ASV machines
    //minepap=EventDataType(data[0x03])/10.0;   // Min EPAP
    //maxepap=EventDataType(data[0x04])/10.0;   // Max EPAP
    //minps=EventDataType(data[0x05])/10.0      // Min Pressure Support
    //maxps=EventDataType(data[0x06])/10.0      // Max Pressure Support

    //duration=data[0x1B] | data[0x1C] << 8)  // Session length in seconds

    //epap90=EventDataType(data[0x21])/10.0;    // EPAP 90%
    //epapavg=EventDataType(data[0x22])/10.0;   // EPAP Average
    //ps90=EventDataType(data[0x23])/10.0;      // Pressure Support 90%
    //psavg=EventDataType(data[0x24])/10.0;     // Pressure Support Average

    //TODO: minpb=data[0x] | data[0x] << 8;           // Minutes in PB
    //TODO: minleak=data[0x] | data[0x] << 8;         // Minutes in Large Leak
    //TODO: oa_cnt=data[0x] | data[0x] << 8;          // Obstructive events count

    //ca_cnt=data[0x2d] | data[0x2e] << 8;      // Clear Airway Events count
    //h_cnt=data[0x2f] | data[0x30] << 8;       // Hypopnea events count
    //fl_cnt=data[0x33] | data[0x34] << 8;      // Flow Limitation events count

    //avg_leak=EventDataType(data[0x35]);       // Average Leak
    //avgptb=EventDataType(data[0x36]);         // Average Patient Triggered Breaths %
    //avgbreathrate=EventDataType(data[0x37]);  // Average Breaths Per Minute
    //avgminvent=EventDataType(data[0x38]);     // Average Minute Ventilation
    //avg_tidalvol=EventDataType(data[0x39])*10.0;  // Average Tidal Volume
    //////////////////////////////////////////////////////////////////////////////////////////

    min = float(data[0x03]) / 10.0; // Min EPAP
    max = float(data[0x04]) / 10.0; // Max EPAP
    int offset = 0;

    if (family == 5) { //data[0x05]!=0) { // This is a time value for ASV stuff
        offset = 4; // non zero adds 4 extra fields..
    } else if (family == 0 && familyVersion >= 4) {
        offset = 2;
    }

    // Minutes. Convert to seconds/hours here?
    session->settings[CPAP_RampTime] = (int)data[offset + 0x06];
    session->settings[CPAP_RampPressure] = (EventDataType)data[offset + 0x07] / 10.0;

    if (max > 0) { // Ignoring bipap until we see some more data during import
        session->settings[CPAP_Mode] = (family == 5) ? (int)MODE_ASV : (int)MODE_APAP;

        session->settings[CPAP_PressureMin] = (EventDataType)min;
        session->settings[CPAP_PressureMax] = (EventDataType)max;
    } else {
        session->settings[CPAP_Mode] = (int)MODE_CPAP;
        session->settings[CPAP_Pressure] = (EventDataType)min;
    }

    // This is incorrect..
    if (data[offset + 0x08] & 0x80) { // Flex Setting
        if (data[offset + 0x08] & 0x08) {
            if (max > 0) {
                if (family == 5) {
                    session->settings[CPAP_PresReliefType] = (int)PR_BIFLEX;
                } else {
                    session->settings[CPAP_PresReliefType] = (int)PR_AFLEX;
                }
            } else { session->settings[CPAP_PresReliefType] = (int)PR_CFLEXPLUS; }
        } else { session->settings[CPAP_PresReliefType] = (int)PR_CFLEX; }
    } else { session->settings[CPAP_PresReliefType] = (int)PR_NONE; }

    session->settings[CPAP_PresReliefMode] = (int)PM_FullTime; // only has one mode


    session->settings[CPAP_PresReliefSet] = (int)(data[offset + 0x08] & 7);
    session->settings[PRS1_SysLock] = (data[offset + 0x0a] & 0x80) == 0x80;
    session->settings[PRS1_HoseDiam] = ((data[offset + 0x0a] & 0x08) ? "15mm" : "22mm");
    session->settings[PRS1_AutoOff] = (data[offset + 0x0c] & 0x10) == 0x10;
    session->settings[PRS1_MaskAlert] = (data[offset + 0x0c] & 0x08) == 0x08;
    session->settings[PRS1_ShowAHI] = (data[offset + 0x0c] & 0x04) == 0x04;

    if (family == 0 && familyVersion >= 4) {
        if ((data[offset + 0x0a] & 0x04) == 0x04) { // heated tubing off
            session->settings[CPAP_HumidSetting] = (int)data[offset + 0x09] & 0x0f;
        } else {
            session->settings[CPAP_HumidSetting] = (int)(data[offset + 0x09] & 0x30) >> 4;
        }

        session->settings[PRS1_SysOneResistSet] = (int)(data[offset + 0x0b] & 0x38) >> 3;
        /* These should be added to channels, if they are correct(?) */
        /* for now, leave commented out                              */
        /*
        session->settings[PRS1_HeatedTubing]=(data[offset+0x0a]&0x04)!=0x04;
        session->settings[PRS1_HeatedTubingConnected]=(data[offset+0x0b]&0x01)==0x01;
        session->settings[PRS1_HeatedTubingTemp]=(int)(data[offset+0x09]&0x80)>>5
            + (data[offset+0x0a]&0x03);
        */
    } else {
        session->settings[CPAP_HumidSetting] = (int)data[offset + 0x09] & 0x0f;
        session->settings[PRS1_HumidStatus] = (data[offset + 0x09] & 0x80) == 0x80;
        session->settings[PRS1_SysOneResistStat] = (data[offset + 0x0a] & 0x40) == 0x40;
        session->settings[PRS1_SysOneResistSet] = (int)data[offset + 0x0a] & 7;
    }


    // up to this point appears to be correct, everything after is pretty much crap
    // Summary files vary too much between Families/versions


    if (size < 59) {
//        duration = data[offset + 0x12] | (data[offset + 0x13] << 8);
//        duration *= 2;
//        session->really_set_last(qint64(timestamp + duration) * 1000L);

        if (max > 0) {
            session->setMin(CPAP_Pressure, min);
            session->setMax(CPAP_Pressure, max);
            //session->setWavg(CPAP_Pressure,min);
        }
    } else {

        // 0X28 & 0X29 is length on r5
//        if (family == 0 && familyVersion >= 4) {
//            offset += 12;
//        }

        // on some 60 series it's one off. or was the original 60 series patch wrong?
        // I verified this comment below against several data samples compared with encore reports.
        //duration=data[0x1B] | data[0x1C] << 8)  // Session length in seconds


//        duration = data[offset + 0x14] | (data[offset + 0x15] << 8);

//        if (!duration) {
//            qDebug() << "!duration exit";
//            delete session;
//            return false;
//        }

  //      session->really_set_last(qint64(timestamp + duration) * 1000L);
   //     float hours = float(duration) / 3600.0;

        // Not using these because sometimes this summary is broken.
        //EventDataType minp,maxp,avgp,p90p;

        //minp=float(data[offset+0x16])/10.0;
        //maxp=float(data[offset+0x17])/10.0;
        //p90p=float(data[offset+0x18])/10.0;
        //avgp=float(data[offset+0x19])/10.0;

        // Nope.. positions are too variant between models.. calculate the hard way during machine->Save()..
//        short minp = data[offset + 0x16];
//        short maxp = data[offset + 0x17];
//        short medp = data[offset + 0x19];
//        short p90p = data[offset + 0x18];

//        if (family < 5) {
//            if (minp > 0) { session->setMin(CPAP_Pressure, EventDataType(minp) * 0.10); }
//            if (maxp > 0) { session->setMax(CPAP_Pressure, EventDataType(maxp) * 0.10); }
//            if (medp > 0) { session->setWavg(CPAP_Pressure, EventDataType(medp) * 0.10); } // ??

//            session->m_gain[CPAP_Pressure] = 0.1;
//            session->m_valuesummary[CPAP_Pressure][minp] = 5;
//            session->m_valuesummary[CPAP_Pressure][medp] = 46;
//            session->m_valuesummary[CPAP_Pressure][p90p] = 44;
//            session->m_valuesummary[CPAP_Pressure][maxp] = 5;
//        }

        //        if (p90p>0) {
        //            session->set90p(CPAP_Pressure,p90p);
        //        }

        // I can't rely on the position of any of this!

//        int oc, cc, hc, rc, fc;
//        session->setCount(CPAP_Obstructive, oc = (int)data[offset + 0x1C] | (data[offset + 0x1D] << 8));
//        session->setCount(CPAP_ClearAirway, cc = (int)data[offset + 0x20] | (data[offset + 0x21] << 8));
//        session->setCount(CPAP_Hypopnea, hc = (int)data[offset + 0x2A] | (data[offset + 0x2B] << 8));
//        session->setCount(CPAP_RERA, rc = (int)data[offset + 0x2E] | (data[offset + 0x2F] << 8));
//        session->setCount(CPAP_FlowLimit, fc = (int)data[offset + 0x30] | (data[offset + 0x31] << 8));

//        session->setCph(CPAP_Obstructive, float(oc / hours));
//        session->setCph(CPAP_ClearAirway, float(cc / hours));
//        session->setCph(CPAP_Hypopnea, float(hc / hours));
//        session->setCph(CPAP_RERA, float(rc / hours));
//        session->setCph(CPAP_FlowLimit, float(fc / hours));
    }

    // Set recommended Graph values..
    session->setPhysMax(CPAP_LeakTotal, 120);
    session->setPhysMin(CPAP_LeakTotal, 0);
    session->setPhysMax(CPAP_Pressure, 25);
    session->setPhysMin(CPAP_Pressure, 4);
    session->setPhysMax(CPAP_IPAP, 25);
    session->setPhysMin(CPAP_IPAP, 4);
    session->setPhysMax(CPAP_EPAP, 25);
    session->setPhysMin(CPAP_EPAP, 4);
    session->setPhysMax(CPAP_PS, 25);
    session->setPhysMin(CPAP_PS, 0);

    new_sessions[sequence] = session;
    return true;
}

bool PRS1Loader::Parse002v5(qint32 sequence, quint32 timestamp, unsigned char *buffer,
                            quint16 size,int familyVersion)
{
    if (!new_sessions.contains(sequence)) {
        qDebug() << "contains squence exit";
        return false;
    }

    Session *session = new_sessions[sequence];

    ChannelID Codes[] = {
        PRS1_00, PRS1_01, CPAP_Pressure, CPAP_EPAP, CPAP_PressurePulse, CPAP_Obstructive,
        CPAP_ClearAirway, CPAP_Hypopnea, PRS1_08,  CPAP_FlowLimit, PRS1_0A, CPAP_CSR,
        PRS1_0C, CPAP_VSnore, PRS1_0E, PRS1_0F,
        PRS1_10, // Large leak apparently
        CPAP_LeakTotal, PRS1_12
    };

    int ncodes = sizeof(Codes) / sizeof(ChannelID);
    EventList *Code[0x20] = {nullptr};

    EventList *OA = session->AddEventList(CPAP_Obstructive, EVL_Event);
    EventList *HY = session->AddEventList(CPAP_Hypopnea, EVL_Event);
    EventList *CSR = session->AddEventList(CPAP_CSR, EVL_Event);
    EventList *LEAK = session->AddEventList(CPAP_LeakTotal, EVL_Event);
    EventList *SNORE = session->AddEventList(CPAP_Snore, EVL_Event);
    EventList *IPAP = session->AddEventList(CPAP_IPAP, EVL_Event, 0.1F);
    EventList *EPAP = session->AddEventList(CPAP_EPAP, EVL_Event, 0.1F);
    EventList *PS = session->AddEventList(CPAP_PS, EVL_Event, 0.1F);
    EventList *IPAPLo = session->AddEventList(CPAP_IPAPLo, EVL_Event, 0.1F);
    EventList *IPAPHi = session->AddEventList(CPAP_IPAPHi, EVL_Event, 0.1F);
    EventList *RR = session->AddEventList(CPAP_RespRate, EVL_Event);
    EventList *PTB = session->AddEventList(CPAP_PTB, EVL_Event);

    EventList *MV = session->AddEventList(CPAP_MinuteVent, EVL_Event);
    EventList *TV = session->AddEventList(CPAP_TidalVolume, EVL_Event, 10.0F);

    EventList *CA = nullptr; //session->AddEventList(CPAP_ClearAirway, EVL_Event);
    EventList *VS = nullptr, * FL = nullptr; //,* RE=nullptr,* VS2=nullptr;

    //EventList * PRESSURE=nullptr;
    //EventList * PP=nullptr;

    EventDataType data[10];//,tmp;


    //qint64 start=timestamp;
    qint64 t = qint64(timestamp) * 1000L;
    session->updateFirst(t);
    qint64 tt;
    int pos = 0;
    int cnt = 0;
    short delta;//,duration;
    QDateTime d;
    bool badcode = false;
    unsigned char lastcode3 = 0, lastcode2 = 0, lastcode = 0, code = 0;
    int lastpos = 0, startpos = 0, lastpos2 = 0, lastpos3 = 0;

    while (pos < size) {
        lastcode3 = lastcode2;
        lastcode2 = lastcode;
        lastcode = code;
        lastpos3 = lastpos2;
        lastpos2 = lastpos;
        lastpos = startpos;
        startpos = pos;
        code = buffer[pos++];

        if (code >= ncodes) {
            qDebug() << "Illegal PRS1 code " << hex << int(code) << " appeared at " << hex << startpos;
            qDebug() << "1: (" << int(lastcode) << hex << lastpos << ")";
            qDebug() << "2: (" << int(lastcode2) << hex << lastpos2 << ")";
            qDebug() << "3: (" << int(lastcode3) << hex << lastpos3 << ")";
            return false;
        }

        if (code == 0) {
        } else if (code != 0x12) {
            delta = buffer[pos];
            //duration=buffer[pos+1];
            //delta=buffer[pos+1] << 8 | buffer[pos];
            pos += 2;
            t += qint64(delta) * 1000L;
        }

        ChannelID cpapcode = Codes[(int)code];
        //EventDataType PS;
        tt = t;
        cnt++;
        int fc = 0;

        switch (code) {
        case 0x00: // Unknown (ASV Pressure value)
            // offset?
            data[0] = buffer[pos++];
            fc++;

            if (!buffer[pos - 1]) { // WTH???
                data[1] = buffer[pos++];
                fc++;
            }

            if (!buffer[pos - 1]) {
                data[2] = buffer[pos++];
                fc++;
            }

            break;

        case 0x01: // Unknown
            if (!Code[1]) {
                if (!(Code[1] = session->AddEventList(cpapcode, EVL_Event, 0.1F))) { return false; }
            }

            Code[1]->AddEvent(t, 0);
            break;

        case 0x02: // Pressure ???
            data[0] = buffer[pos++];
            //            if (!Code[2]) {
            //                if (!(Code[2]=session->AddEventList(cpapcode,EVL_Event,0.1))) return false;
            //            }
            //            Code[2]->AddEvent(t,data[0]);
            break;

        case 0x04: // Pressure Pulse??
            data[0] = buffer[pos++];

            if (!Code[3]) {
                if (!(Code[3] = session->AddEventList(cpapcode, EVL_Event))) { return false; }
            }

            Code[3]->AddEvent(t, data[0]);
            break;

        case 0x05:
            //code=CPAP_Obstructive;
            data[0] = buffer[pos++];
            tt -= qint64(data[0]) * 1000L; // Subtract Time Offset
            OA->AddEvent(tt, data[0]);
            break;

        case 0x06:
            //code=CPAP_ClearAirway;
            data[0] = buffer[pos++];
            tt -= qint64(data[0]) * 1000L; // Subtract Time Offset

            if (!CA) {
                if (!(CA = session->AddEventList(cpapcode, EVL_Event))) { return false; }
            }

            CA->AddEvent(tt, data[0]);
            break;

        case 0x07:
            //code=CPAP_Hypopnea;
            data[0] = buffer[pos++];
            tt -= qint64(data[0]) * 1000L; // Subtract Time Offset
            HY->AddEvent(tt, data[0]);
            break;

        case 0x08: // ???
            data[0] = buffer[pos++];
            tt -= qint64(data[0]) * 1000L; // Subtract Time Offset
            qDebug() << "Code 8 found at " << hex << pos - 1 << " " << tt;

            if (!Code[10]) {
                if (!(Code[10] = session->AddEventList(cpapcode, EVL_Event))) { return false; }
            }

            //????
            //data[1]=buffer[pos++]; // ???
            Code[10]->AddEvent(tt, data[0]);
            pos++;
            break;

        case 0x09: // ASV Codes
            //code=CPAP_FlowLimit;
            data[0] = buffer[pos++];
            tt -= qint64(data[0]) * 1000L; // Subtract Time Offset

            if (!FL) {
                if (!(FL = session->AddEventList(cpapcode, EVL_Event))) { return false; }
            }

            FL->AddEvent(tt, data[0]);

            break;

        case 0x0a:
            data[0] = buffer[pos++];
            tt -= qint64(data[0]) * 1000L; // Subtract Time Offset

            if (!Code[7]) {
                if (!(Code[7] = session->AddEventList(cpapcode, EVL_Event))) { return false; }
            }

            Code[7]->AddEvent(tt, data[0]);
            break;


        case 0x0b: // Cheyne Stokes
            data[0] = ((unsigned char *)buffer)[pos + 1] << 8 | ((unsigned char *)buffer)[pos];
            //data[0]*=2;
            pos += 2;
            data[1] = ((unsigned char *)buffer)[pos]; //|buffer[pos+1] << 8
            pos += 1;
            //tt-=delta;
            tt -= qint64(data[1]) * 1000L;

            if (!CSR) {
                if (!(CSR = session->AddEventList(cpapcode, EVL_Event))) {
                    qDebug() << "!CSR addeventlist exit";
                    return false;
                }
            }

            CSR->AddEvent(tt, data[0]);
            break;

        case 0x0c:
            data[0] = buffer[pos++];
            tt -= qint64(data[0]) * 1000L; // Subtract Time Offset
            qDebug() << "Code 12 found at " << hex << pos - 1 << " " << tt;

            if (!Code[8]) {
                if (!(Code[8] = session->AddEventList(cpapcode, EVL_Event))) { return false; }
            }

            Code[8]->AddEvent(tt, data[0]);
            pos += 2;
            break;

        case 0x0d: // All the other ASV graph stuff.
            IPAP->AddEvent(t, data[0] = buffer[pos++]); // 00=IAP
            data[4] = buffer[pos++];
            IPAPLo->AddEvent(t, data[4]);               // 01=IAP Low
            data[5] = buffer[pos++];
            IPAPHi->AddEvent(t, data[5]);               // 02=IAP High
            LEAK->AddEvent(t, buffer[pos++]);           // 03=LEAK
            RR->AddEvent(t, buffer[pos++]);             // 04=Breaths Per Minute
            PTB->AddEvent(t, buffer[pos++]);            // 05=Patient Triggered Breaths
            MV->AddEvent(t, buffer[pos++]);             // 06=Minute Ventilation
            //tmp=buffer[pos++] * 10.0;
            TV->AddEvent(t, buffer[pos++]);             // 07=Tidal Volume
            SNORE->AddEvent(t, data[2] = buffer[pos++]); // 08=Snore

            if (data[2] > 0) {
                if (!VS) {
                    if (!(VS = session->AddEventList(CPAP_VSnore, EVL_Event))) {
                        qDebug() << "!VS eventlist exit";
                        return false;
                    }
                }

                VS->AddEvent(t, 0); //data[2]); // VSnore
            }

            EPAP->AddEvent(t, data[1] = buffer[pos++]); // 09=EPAP
            data[2] = data[0] - data[1];
            PS->AddEvent(t, data[2]);           // Pressure Support
            if (familyVersion >= 1) {
                data[0] = buffer[pos++];

            }
            break;

        case 0x03: // BIPAP Pressure
            qDebug() << "0x03 Observed in ASV data!!????";

            data[0] = buffer[pos++];
            data[1] = buffer[pos++];
            //            data[0]/=10.0;
            //            data[1]/=10.0;
            //            session->AddEvent(new Event(t,CPAP_EAP, 0, data, 1));
            //            session->AddEvent(new Event(t,CPAP_IAP, 0, &data[1], 1));
            break;

        case 0x11: // Not Leak Rate
            qDebug() << "0x11 Observed in ASV data!!????";
            //if (!Code[24]) {
            //   Code[24]=new EventList(cpapcode,EVL_Event);
            //}
            //Code[24]->AddEvent(t,buffer[pos++]);
            break;

        case 0x0e: // Unknown
            qDebug() << "0x0E Observed in ASV data!!????";
            data[0] = buffer[pos++]; // << 8) | buffer[pos];
            //session->AddEvent(new Event(t,cpapcode, 0, data, 1));
            break;

        case 0x10: // Unknown
            qDebug() << "0x10 Observed in ASV data!!????";
            data[0] = buffer[pos++]; // << 8) | buffer[pos];
            data[1] = buffer[pos++];
            data[2] = buffer[pos++];
            //session->AddEvent(new Event(t,cpapcode, 0, data, 3));
            break;

        case 0x0f:
            qDebug() << "0x0f Observed in ASV data!!????";

            data[0] = buffer[pos + 1] << 8 | buffer[pos];
            pos += 2;
            data[1] = buffer[pos]; //|buffer[pos+1] << 8
            pos += 1;
            tt -= qint64(data[1]) * 1000L;
            //session->AddEvent(new Event(tt,cpapcode, 0, data, 2));
            break;

        case 0x12: // Summary
            qDebug() << "0x12 Observed in ASV data!!????";
            data[0] = buffer[pos++];
            data[1] = buffer[pos++];
            data[2] = buffer[pos + 1] << 8 | buffer[pos];
            pos += 2;
            //session->AddEvent(new Event(t,cpapcode, 0, data,3));
            break;

        default:  // ERROR!!!
            qWarning() << "Some new fandangled PRS1 code detected " << hex << int(code) << " at " << pos - 1;
            badcode = true;
            break;
        }

        if (badcode) {
            break;
        }
    }

    session->updateLast(t);
    session->m_cnt.clear();
    session->m_cph.clear();
    session->settings[CPAP_IPAPLo] = session->Min(CPAP_IPAPLo);
    session->settings[CPAP_IPAPHi] = session->Max(CPAP_IPAPHi);
    session->settings[CPAP_PSMax] = session->Max(CPAP_IPAPHi) - session->Min(CPAP_EPAP);
    session->settings[CPAP_PSMin] = session->Min(CPAP_IPAPLo) - session->Min(CPAP_EPAP);

    session->m_valuesummary[CPAP_Pressure].clear();
    session->m_valuesummary.erase(session->m_valuesummary.find(CPAP_Pressure));

    return true;

}

bool PRS1Loader::Parse002(qint32 sequence, quint32 timestamp, unsigned char *buffer, quint16 size,
                          int family, int familyVersion)
{
    if (!new_sessions.contains(sequence)) {
        return false;
    }

    unsigned char code=0;
    EventList *Code[0x20] = {0};
    EventDataType data[10];
    int cnt = 0;
    short delta;
    int tdata;
    quint64 pos;
    qint64 t = qint64(timestamp) * 1000L, tt;

    Session *session = new_sessions[sequence];
    session->updateFirst(t);

    EventList *OA = session->AddEventList(CPAP_Obstructive, EVL_Event);
    EventList *HY = session->AddEventList(CPAP_Hypopnea, EVL_Event);
    EventList *CSR = session->AddEventList(CPAP_CSR, EVL_Event);
    EventList *LEAK = session->AddEventList(CPAP_LeakTotal, EVL_Event);
    EventList *SNORE = session->AddEventList(CPAP_Snore, EVL_Event);

    EventList *CA = nullptr; //session->AddEventList(CPAP_ClearAirway, EVL_Event);
    EventList *VS = nullptr;
    EventList *VS2 = nullptr;
    EventList *FL = nullptr;
    EventList *RE = nullptr;

    EventList *PRESSURE = nullptr;
    EventList *EPAP = nullptr;
    EventList *IPAP = nullptr;
    EventList *PS = nullptr;

    EventList *PP = nullptr;

    //session->AddEventList(CPAP_VSnore, EVL_Event);
    //EventList * VS=session->AddEventList(CPAP_Obstructive, EVL_Event);
    unsigned char lastcode3 = 0, lastcode2 = 0, lastcode = 0;
    int lastpos = 0, startpos = 0, lastpos2 = 0, lastpos3 = 0;

    for (pos = 0; pos < size;) {
        lastcode3 = lastcode2;
        lastcode2 = lastcode;
        lastcode = code;
        lastpos3 = lastpos2;
        lastpos2 = lastpos;
        lastpos = startpos;
        startpos = pos;
        code = buffer[pos++];

        if (code > 0x12) {
            qDebug() << "Illegal PRS1 code " << hex << int(code) << " appeared at " << hex << startpos;
            qDebug() << "1: (" << hex << int(lastcode) << hex << lastpos << ")";
            qDebug() << "2: (" << hex << int(lastcode2) << hex << lastpos2 << ")";
            qDebug() << "3: (" << hex << int(lastcode3) << hex << lastpos3 << ")";
            return false;
        }

        if (code != 0x12) {
            delta = buffer[pos + 1] << 8 | buffer[pos];
            pos += 2;
            t += qint64(delta) * 1000L;
            tt = t;
        }

        cnt++;

        switch (code) {

        case 0x00: // Unknown 00
            if (!Code[0]) {
                if (!(Code[0] = session->AddEventList(PRS1_00, EVL_Event))) { return false; }
            }

            Code[0]->AddEvent(t, buffer[pos++]);

            if (family == 0 && familyVersion >= 4) {
                pos++;
            }

            break;

        case 0x01: // Unknown
            if (!Code[1]) {
                if (!(Code[1] = session->AddEventList(PRS1_01, EVL_Event))) { return false; }
            }

            Code[1]->AddEvent(t, 0);

            if (family == 0 && familyVersion >= 4) {
                if (!PRESSURE) {
                    PRESSURE = session->AddEventList(CPAP_Pressure, EVL_Event, 0.1F);

                    if (!PRESSURE) { return false; }
                }

                PRESSURE->AddEvent(t, buffer[pos++]);
            }

            break;

        case 0x02: // Pressure
            if (family == 0 && familyVersion >= 4) {  // BiPAP Pressure
                if (!EPAP) {
                    if (!(EPAP = session->AddEventList(CPAP_EPAP, EVL_Event, 0.1F))) { return false; }

                    if (!(IPAP = session->AddEventList(CPAP_IPAP, EVL_Event, 0.1F))) { return false; }

                    if (!(PS = session->AddEventList(CPAP_PS, EVL_Event, 0.1F))) { return false; }
                }

                EPAP->AddEvent(t, data[0] = buffer[pos++]);
                IPAP->AddEvent(t, data[1] = buffer[pos++]);
                PS->AddEvent(t, data[1] - data[0]);
            } else {
                if (!PRESSURE) {
                    PRESSURE = session->AddEventList(CPAP_Pressure, EVL_Event, 0.1F);

                    if (!PRESSURE) { return false; }
                }

                PRESSURE->AddEvent(t, buffer[pos++]);
            }

            break;

        case 0x03: // BIPAP Pressure
            if (!EPAP) {
                if (!(EPAP = session->AddEventList(CPAP_EPAP, EVL_Event, 0.1F))) { return false; }

                if (!(IPAP = session->AddEventList(CPAP_IPAP, EVL_Event, 0.1F))) { return false; }

                if (!(PS = session->AddEventList(CPAP_PS, EVL_Event, 0.1F))) { return false; }
            }

            EPAP->AddEvent(t, data[0] = buffer[pos++]);
            IPAP->AddEvent(t, data[1] = buffer[pos++]);
            PS->AddEvent(t, data[1] - data[0]);
            break;

        case 0x04: // Pressure Pulse
            if (!PP) {
                if (!(PP = session->AddEventList(CPAP_PressurePulse, EVL_Event))) { return false; }
            }

            PP->AddEvent(t, buffer[pos++]);
            break;

        case 0x05: // RERA
            data[0] = buffer[pos++];
            tt = t - (qint64(data[0]) * 1000L);

            if (!RE) {
                if (!(RE = session->AddEventList(CPAP_RERA, EVL_Event))) { return false; }
            }

            RE->AddEvent(tt, data[0]);
            break;

        case 0x06: // Obstructive Apoanea
            data[0] = buffer[pos++];
            tt = t - (qint64(data[0]) * 1000L);
            OA->AddEvent(tt, data[0]);
            break;

        case 0x07: // Clear Airway
            data[0] = buffer[pos++];
            tt = t - (qint64(data[0]) * 1000L);

            if (!CA) {
                if (!(CA = session->AddEventList(CPAP_ClearAirway, EVL_Event))) { return false; }
            }

            CA->AddEvent(tt, data[0]);
            break;

        case 0x0a: // Hypopnea
            data[0] = buffer[pos++];
            tt = t - (qint64(data[0]) * 1000L);
            HY->AddEvent(tt, data[0]);
            break;

        case 0x0c: // Flow Limitation
            data[0] = buffer[pos++];
            tt = t - (qint64(data[0]) * 1000L);

            if (!FL) {
                if (!(FL = session->AddEventList(CPAP_FlowLimit, EVL_Event))) { return false; }
            }

            FL->AddEvent(tt, data[0]);
            break;

        case 0x0b: // Hypopnea related code
            data[0] = buffer[pos++];
            data[1] = buffer[pos++];

            if (!Code[12]) {
                if (!(Code[12] = session->AddEventList(PRS1_0B, EVL_Event))) { return false; }
            }

            // FIXME
            Code[12]->AddEvent(t, data[0]);
            break;

        case 0x0d: // Vibratory Snore
            if (!VS) {
                if (!(VS = session->AddEventList(CPAP_VSnore, EVL_Event))) { return false; }
            }

            VS->AddEvent(t, 0);
            break;

        case 0x11: // Leak Rate & Snore Graphs
            data[0] = buffer[pos++];
            data[1] = buffer[pos++];

            LEAK->AddEvent(t, data[0]);
            SNORE->AddEvent(t, data[1]);

            if (data[1] > 0) {
                if (!VS2) {
                    if (!(VS2 = session->AddEventList(CPAP_VSnore2, EVL_Event))) { return false; }
                }

                VS2->AddEvent(t, data[1]);
            }

            if (family == 0 && familyVersion >= 4) {
                pos++;
            }

            break;

        case 0x0e: // Unknown
            data[0] = ((char *)buffer)[pos++];
            data[1] = buffer[pos++]; //(buffer[pos+1] << 8) | buffer[pos];
            //data[0]/=10.0;
            //pos+=2;
            data[2] = buffer[pos++];

            if (!Code[17]) {
                if (!(Code[17] = session->AddEventList(PRS1_0E, EVL_Event))) { return false; }
            }

            tdata = unsigned(data[1]) << 8 | unsigned(data[0]);
            Code[17]->AddEvent(t, tdata);
            //qDebug() << hex << data[0] << data[1] << data[2];
            //session->AddEvent(new Event(t,cpapcode, 0, data, 3));
            //tt-=data[1]*1000;
            //session->AddEvent(new Event(t,CPAP_CSR, data, 2));
            break;

        case 0x10: // Unknown, Large Leak
            data[0] = buffer[pos + 1] << 8 | buffer[pos];
            pos += 2;
            data[1] = buffer[pos++];

            if (!Code[20]) {
                if (!(Code[20] = session->AddEventList(PRS1_10, EVL_Event))) { return false; }
            }

            tt = t - qint64(data[1]) * 1000L;
            Code[20]->AddEvent(tt, data[0]);
            break;

        case 0x0f: // Cheyne Stokes Respiration
            data[0] = buffer[pos + 1] << 8 | buffer[pos];
            pos += 2;
            data[1] = buffer[pos++];
            tt = t - qint64(data[1]) * 1000L;
            CSR->AddEvent(tt, data[0]);
            break;

        case 0x12: // Summary
            data[0] = buffer[pos++];
            data[1] = buffer[pos++];
            data[2] = buffer[pos + 1] << 8 | buffer[pos];
            pos += 2;

            if (!Code[24]) {
                if (!(Code[24] = session->AddEventList(PRS1_12, EVL_Event))) { return false; }
            }

            Code[24]->AddEvent(t, data[0]);
            break;

        default:
            // ERROR!!!
            qWarning() << "Some new fandangled PRS1 code detected in" << sequence << hex
                       << int(code) << " at " << pos - 1;
            return false;
        }
    }

    session->updateLast(t);
    session->m_cnt.clear();
    session->m_cph.clear();
    session->m_lastchan.clear();
    session->m_firstchan.clear();
    session->m_valuesummary[CPAP_Pressure].clear();
    session->m_valuesummary.erase(session->m_valuesummary.find(CPAP_Pressure));

    return true;
}


//bool PRS1Loader::ParseWaveform(qint32 sequence, quint32 timestamp, unsigned char *data, quint16 size, quint16 duration, quint16 num_signals, quint16 interleave, quint8 sample_format)
//{
//    Q_UNUSED(interleave)
//    Q_UNUSED(sample_format)
//    // this whole function is currently unused..

//    if (!new_sessions.contains(sequence))
//        return false;

//    qint64 t=qint64(timestamp)*1000L;

//    Session *session=new_sessions[sequence];

//    if (num_signals==1) {
//        session->updateFirst(t);
//        double d=duration*1000;
//        EventDataType rate=d / EventDataType(size);
//        EventList *ev=session->AddEventList(CPAP_FlowRate,EVL_Waveform,1.0,0.00,0,0,rate);
//        ev->AddWaveform(t,(char *)data,size,qint64(duration)*1000L);
//        session->updateLast(t+qint64(duration)*1000L);

//    }

//    return true;
//}

bool PRS1Loader::OpenFile(Machine *mach, QString filename)
{
    int sequence, family, familyVersion;
    quint32 timestamp;
    qint64 pos;
    unsigned char ext, sum, htype;
    unsigned char *header, *data;
    int chunk, hl;
    quint16 size, datasize, c16, crc;

    // waveform stuff
    vector<WaveHeaderList> whl;
    quint16 interleave, duration, num_signals;
    quint8  sample_format;

    QFile f(filename);

    if (!f.exists()) {
        return false;
    }

    if (!f.open(QIODevice::ReadOnly)) {
        return false;
    }

    qint64 filesize = f.size();

    if (filesize > max_load_buffer_size) {
        qWarning() << "Waveform too big, increase max_load_buffer_size in PRS1Loader sourcecode" <<
                   filename;
        return false;
    }

    if (f.read((char *)m_buffer, filesize) < filesize) {
        qDebug() << "Couldn't read full file" << filename;
        return false;
    }

    pos = 0;
    bool wasfaulty = false, faulty = false;

    for (chunk = 0; pos < filesize; ++chunk, pos += size) {
        header = &m_buffer[pos];

        if (header[0] != PRS1_MAGIC_NUMBER) {
            if (chunk == 0) {
                qDebug() << "Invalid magic number" << filename;
            }

            return false;
            break;
        }

        size = (header[2] << 8) | header[1];
        htype = header[3]; // 00 = normal // 01=waveform // could be a bool?
        Q_UNUSED(htype);
        family = header[4]; // == 5
        familyVersion = header[5];
        ext = header[6];

        sequence = (header[10] << 24) | (header[9] << 16) | (header[8] << 8) | header[7];
        timestamp = (header[14] << 24) | (header[13] << 16) | (header[12] << 8) | header[11];

        qDebug() << "family: " << family << " familyversion: " << familyVersion;

        if (ext == 5) {
            duration = header[0xf] | header[0x10] << 8;  // block duration in seconds
            Q_UNUSED(duration);
            num_signals = header[0x12] | header[0x13] << 8;

            if (num_signals > 2) {
                qWarning() << "More than 2 Waveforms in " << filename;
                return false;
            }

            long pos2 = 0x14 + (num_signals - 1) * 3;

            // add the in reverse...
            for (int i = 0; i < num_signals; i++) {
                interleave = header[pos2] | header[pos2 + 1] << 8;
                sample_format = header[pos2 + 2];
                whl.push_back(WaveHeaderList(interleave, sample_format));
                pos2 -= 3;
            }

            hl = 15 + 6 + (num_signals * 3);

        } else { hl = 16; }

        wasfaulty = faulty;
        sum = 0;

        for (int i = 0; i < hl - 1; i++) { sum += header[i]; }

        unsigned char c8 = header[hl - 1];

        if (sum != c8) {
            if (chunk == 0) {
                qDebug() << "File" << filename << "has faulty header at" << pos;

                if ((size > 0) && (pos + size < filesize) && (header[size] == 2)) {
                    faulty = true;
                    continue;
                }

                return (chunk != 0);
            }

            break;
        }

        datasize = size - hl - 2;

        data = &header[hl];

#ifdef PRS1_CRC_CHECK
        c16 = CRC16(data, datasize);
        crc = (data[datasize + 1] << 8) | data[datasize];

        if (crc != c16) {
            qDebug() << "File" << filename << "failed CRC check at chunk" << chunk << "wanted" << crc << "got"
                     << c16;
            faulty = true;
            continue;
        }

#endif

        if (wasfaulty) {
            qDebug() << "Managed to continue with next block";
        }


        qDebug() << "Loading" << QDir::toNativeSeparators(filename) << sequence << timestamp << size;

        //if (ext==0) ParseCompliance(data,size);
        if (ext <= 1) {
            ParseSummary(mach, sequence, timestamp, data, datasize, family, familyVersion);
        } else if (ext == 2) {
            if (family == 5) {
                if (!Parse002v5(sequence, timestamp, data, datasize, familyVersion)) {
                    qDebug() << "in file: " << QDir::toNativeSeparators(filename);
                }
            } else {
                Parse002(sequence, timestamp, data, datasize, family, familyVersion);
            }
        } else if (ext == 5) {
            // too messy to do here..
            //ParseWaveform(mach,sequence,timestamp,data,datasize,duration,num_signals,interleave,sample_format);
        }
    }

    return true;
}


bool PRS1Loader::OpenWaveforms(SessionID sid, QString filename)
{
    Session *session = new_sessions[sid];
    //int sequence,seconds,br,htype,version,numsignals;
    QFile file(filename);

    if (!file.open(QIODevice::ReadOnly)) {
        qWarning() << "Couldn't open waveform file" << filename;
        return false;
    }

    int pos, br, size = file.size();

    if (size > max_load_buffer_size) {
        qWarning() << "Waveform too big, increase max_load_buffer_size in PRS1Loader sourcecode" <<
                   filename;
        return false;
    }

    br = file.read((char *)m_buffer, size);

    if (br < size) {
        qWarning() << "Couldn't read waveform data.. Disk error?" << filename;
        return false;
    }

    // Look at the initial header and assume this header size for the lot.
    if ((m_buffer[0] != 2) || (m_buffer[6] != 0x05)) {
        qWarning() << "Not correct waveform format" << filename;
        return false;
    }

    //quint8 version=m_buffer[4];
    quint32 start = m_buffer[0xb] | m_buffer[0xc] << 8 | m_buffer[0xd] << 16 | m_buffer[0x0e] << 24;

    session->updateFirst(qint64(start) * 1000L);

    quint16 num_signals = m_buffer[0x12] | m_buffer[0x13] << 8;

    if (num_signals > 2) {
        qWarning() << "More than 2 Waveforms in " << filename;
        return false;
    }

    pos = 0x14 + (num_signals - 1) * 3;
    vector<WaveHeaderList> whl;

    // add the signals to whl in reverse...
    for (int i = 0; i < num_signals; i++) {
        quint16 interleave = m_buffer[pos] | m_buffer[pos + 1] << 8;
        quint8 sample_format = m_buffer[pos + 2];
        whl.push_back(WaveHeaderList(interleave, sample_format));
        pos -= 3;
    }

    int hl = 15 + 5 + (num_signals * 3);
    quint16 duration, length = 0;
    quint32 timestamp, lasttimestamp;


    pos = 0;
    int block = 0;
    lasttimestamp = start;
    duration = 0;
    int corrupt = 0;
    char waveform[2][500000]; // eek. That's a lot of Stack.
    int wlength[2];
    qint64 wdur[2];

    //EventList *evl[num_signals];
    for (int i = 0; i < num_signals; i++) {
        wlength[i] = 0;
        wdur[i] = 0;
        //evl[i]=nullptr;

        //waveform[i].resize(500000);
    }

    //SampleFormat *wf[num_signals];
    //EventList *FlowData=EventList(CPAP_FlowRate, EVL_Waveform,1,0,-128,128);
    //EventList *MaskData=EventList(CPAP_MaskPressure, EVL_Waveform,1,0,-128,128);

    //QString FlowRate=CPAP_FlowRate;
    //QString MaskPressure="MaskPressure";
    ChannelID wc[2] = {CPAP_FlowRate, CPAP_MaskPressure};

    unsigned char sum8; // additive checksum

    do {
        timestamp = m_buffer[pos + 0xb] | m_buffer[pos + 0xc] << 8 |
                    m_buffer[pos + 0xd] << 16 | m_buffer[pos + 0x0e] << 24;


        // Calculate header checksum
        sum8 = 0;
        for (int i = 0; i < hl; i++) { sum8 += m_buffer[pos + i]; }

        if (m_buffer[pos + hl] != sum8) {
            if (block == 0) {
                qDebug() << "Faulty Header Checksum, aborting" << filename;
                return false;
            }

            if (++corrupt > 3) {
                qDebug() << "3 Faulty Waveform Headers in a row.. Aborting" << filename;
                return false;
            }

            qDebug() << "Faulty Header Checksum, skipping block" << block;
            pos += length;
            continue;
        } else {
            int diff = timestamp - (lasttimestamp + duration);

            if (block == 1) {
                if (diff > 0) {
                    start -= diff;
                }
            }

            length = m_buffer[pos + 0x1] | m_buffer[pos + 0x2] << 8; // block length in bytes
            duration = m_buffer[pos + 0xf] | m_buffer[pos + 0x10] << 8; // block duration in seconds

            if (diff < 0) {
                qDebug() << "Padding waveform to keep sync" << block;

                //diff=qAbs(diff);
                for (int i = 0; i < num_signals; i++) {
                    for (int j = 0; j < diff; j++) {
                        for (int k = 0; k < whl[i].interleave; k++) {
                            waveform[i][wlength[i]++] = 0;
                        }
                    }

                    wdur[i] += diff;
                }

            } else if ((diff > 0) && (wlength[0] > 0))  {
                qDebug() << "Timestamp resync" << block << diff << corrupt << duration << timestamp - lasttimestamp
                         << filename;


                for (int i = 0; i < num_signals; i++) {
                    double rate = (double(wdur[i]) * 1000.0) / double(wlength[i]);
                    double gain;

                    if (i == 1) { gain = 0.1; }
                    else { gain = 1; }

                    EventList *a = session->AddEventList(wc[i], EVL_Waveform, gain, 0, 0, 0, rate);

                    //EventList *a=new EventList(wc[i],EVL_Waveform,gain,0,0,0,rate);
                    //session->machine()->registerChannel(wc[i]);
                    if (whl[i].sample_format) {
                        a->AddWaveform(qint64(start) * 1000L, (unsigned char *)waveform[i], wlength[i],
                                       qint64(wdur[i]) * 1000L);
                    } else {
                        a->AddWaveform(qint64(start) * 1000L, (char *)waveform[i], wlength[i], qint64(wdur[i]) * 1000L);
                    }

                    if (wc[i] == CPAP_FlowRate) {
                        a->setMax(120);
                        a->setMin(-120);
                    } else if (wc[i] == CPAP_MaskPressure) {
                        //int v=ceil(a->Max()/5);
                        //a->setMax(v*5);
                        //v=floor(a->Min()/5);
                        //a->setMin(v*5);
                    }

                    session->updateLast((start + qint64(wdur[i])) * 1000L);
                    wlength[i] = 0;
                    wdur[i] = 0;
                }

                start = timestamp;
                corrupt = 0;
            }
        }

        pos += hl + 1;

        //qDebug() <<  (duration*num_signals*whl[0].interleave) << duration;

        if (num_signals == 1) { // no interleave.. this is much quicker.
            int bs = duration * whl[0].interleave;
            memcpy((char *) & (waveform[0])[wlength[0]], (char *)&m_buffer[pos], bs);

            wlength[0] += bs;

            pos += bs;
        } else {
            for (int i = 0; i < duration; i++) {
                for (int s = 0; s < num_signals; s++) {
                    memcpy((char *) & (waveform[s])[wlength[s]], (char *)&m_buffer[pos], whl[s].interleave);
                    wlength[s] += whl[s].interleave;
                    pos += whl[s].interleave;
                }
            }
        }

        for (int i = 0; i < num_signals; i++) { wdur[i] += duration; }

        pos += 2;
        block++;
        lasttimestamp = timestamp;
    } while (pos < size);

    for (int i = 0; i < num_signals; i++) {
        double rate = (double(wdur[i]) * 1000.0) / double(wlength[i]);
        double gain;

        if (i == 1) { gain = 0.1; }
        else { gain = 1; }

        EventList *a = session->AddEventList(wc[i], EVL_Waveform, gain, 0, 0, 0, rate);

        if (whl[i].sample_format) {
            a->AddWaveform(qint64(start) * 1000L, (unsigned char *)waveform[i], wlength[i],
                           qint64(wdur[i]) * 1000L);
        } else {
            a->AddWaveform(qint64(start) * 1000L, (char *)waveform[i], wlength[i], qint64(wdur[i]) * 1000L);
        }

        if (wc[i] == CPAP_FlowRate) {
            a->setMax(120);
            a->setMin(-120);
        } else if (wc[i] == CPAP_MaskPressure) {
        }

        session->updateLast((start + qint64(wdur[i])) * 1000L);
    }

    // lousy family 5 check to see if already has RespRate
    return true;
}

void InitModelMap()
{
    ModelMap[0x34] = "RemStar Pro with C-Flex+"; // 450/460P
    ModelMap[0x35] = "RemStar Auto with A-Flex"; // 550/560P
    ModelMap[0x36] = "RemStar BiPAP Pro with Bi-Flex";
    ModelMap[0x37] = "RemStar BiPAP Auto with Bi-Flex";
    ModelMap[0x38] = "RemStar Plus :(";          // 150/250P/260P
    ModelMap[0x41] = "BiPAP autoSV Advanced";
}

bool initialized = false;
void PRS1Loader::Register()
{
    if (initialized) { return; }

    qDebug() << "Registering PRS1Loader";
    RegisterLoader(new PRS1Loader());
    InitModelMap();
    initialized = true;
}




