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61333aff07
It turns out the 2s-resolution files are actually 4s resolution with each sample reported twice! Fixing that is next.
329 lines
12 KiB
C++
329 lines
12 KiB
C++
/* SleepLib Viatom Loader Implementation
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*
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* Copyright (c) 2019-2020 The OSCAR Team
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* (Initial importer written by dave madden <dhm@mersenne.com>)
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of the source code
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* for more details. */
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//********************************************************************************************
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// IMPORTANT!!!
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//********************************************************************************************
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// Please INCREMENT the viatom_data_version in viatom_loader.h when making changes to this loader
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// that change loader behaviour or modify channels.
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//********************************************************************************************
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#include <QDir>
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#include <QTextStream>
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#include <QApplication>
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#include <QMessageBox>
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#include "viatom_loader.h"
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#include "SleepLib/machine.h"
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static QSet<QString> s_unexpectedMessages;
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bool
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ViatomLoader::Detect(const QString & path)
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{
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// I don't know under what circumstances this is called...
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qDebug() << "ViatomLoader::Detect(" << path << ")";
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return true;
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}
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int
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ViatomLoader::Open(const QString & dirpath)
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{
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// I don't know under what circumstances this is called...
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qDebug() << "ViatomLoader::Open(" << dirpath << ")";
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return 0;
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}
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int
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ViatomLoader::OpenFile(const QString & filename)
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{
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bool ok = false;
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s_unexpectedMessages.clear();
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qDebug() << "ViatomLoader::OpenFile(" << filename << ")";
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Session* sess = ParseFile(filename);
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if (sess == nullptr) {
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QMessageBox::information(QApplication::activeWindow(),
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QObject::tr("Unrecognized File"),
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QObject::tr("This file does not appear to be a Viatom data file.") +"\n\n"+
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QObject::tr("If it is, the developers will need a copy of this file so that future versions of OSCAR will be able to read it.")
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,QMessageBox::Ok);
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} else {
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SaveSessionToDatabase(sess);
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ok = true;
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if (s_unexpectedMessages.count() > 0 && p_profile->session->warnOnUnexpectedData()) {
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// Compare this to the list of messages previously seen for this machine
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// and only alert if there are new ones.
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QSet<QString> newMessages = s_unexpectedMessages - sess->machine()->previouslySeenUnexpectedData();
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if (newMessages.count() > 0) {
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// TODO: Rework the importer call structure so that this can become an
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// emit statement to the appropriate import job.
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QMessageBox::information(QApplication::activeWindow(),
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QObject::tr("Untested Data"),
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QObject::tr("Your Viatom device generated data that OSCAR has never seen before.") +"\n\n"+
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QObject::tr("The imported data may not be entirely accurate, so the developers would like a copy of this file to make sure OSCAR is handling the data correctly.")
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,QMessageBox::Ok);
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sess->machine()->previouslySeenUnexpectedData() += newMessages;
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}
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}
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}
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return ok;
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}
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Session* ViatomLoader::ParseFile(const QString & filename)
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{
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QFile file(filename);
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if (!file.open(QFile::ReadOnly)) {
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qDebug() << "Couldn't open Viatom data file" << filename;
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return nullptr;
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}
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ViatomFile v(file);
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if (v.ParseHeader() == false) {
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return nullptr;
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}
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// TODO: Figure out what to do about machine ID. Right now OSCAR generates a random ID since we don't specify one.
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// That means you won't be able to import multiple Viatom devices in a single session/profile.
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MachineInfo info = newInfo();
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Machine *mach = p_profile->CreateMachine(info);
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Session *sess = mach->SessionExists(v.sessionid());
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quint64 time_ms = v.timestamp();
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QDateTime data_timestamp = QDateTime::fromMSecsSinceEpoch(time_ms);
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if (!sess) {
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qDebug() << "Session at" << data_timestamp << "not found...create new session" << v.sessionid();
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sess = new Session(mach, v.sessionid());
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sess->really_set_first(time_ms);
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} else {
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qDebug() << "Session" << v.sessionid() << "found...add data to it";
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}
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QList<ViatomFile::Record> records = v.ReadData();
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quint64 step = v.duration() / records.size() * 1000L;
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//CHECK_VALUES(step, 2000, 4000); // TODO: once ReadData deduplicates the records, there will only be 4000
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EventList *ev_hr = sess->AddEventList(OXI_Pulse, EVL_Waveform, 1.0, 0.0, 0.0, 0.0, step);
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EventList *ev_o2 = sess->AddEventList(OXI_SPO2, EVL_Waveform, 1.0, 0.0, 0.0, 0.0, step);
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EventList *ev_mv = sess->AddEventList(POS_Motion, EVL_Waveform, 1.0, 0.0, 0.0, 0.0, step);
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// Import data
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// TODO: Add support for multiple eventlists rather than holding the previous value.
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ViatomFile::Record prev = { 99, 60, 0, 0, 0 };
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for (auto & rec : records) {
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if (rec.spo2 < 50 || rec.spo2 > 100) rec.spo2 = prev.spo2;
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if (rec.hr < 20 || rec.hr > 200) rec.hr = prev.hr;
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if (rec.motion > 200) rec.motion = prev.motion;
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sess->set_last(time_ms);
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ev_hr->AddEvent(time_ms, rec.hr);
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ev_o2->AddEvent(time_ms, rec.spo2);
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ev_mv->AddEvent(time_ms, rec.motion);
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prev = rec;
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time_ms += step;
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}
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/*
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qDebug() << "Read Viatom data from" << data_timestamp << "to" << (QDateTime::fromSecsSinceEpoch( time_ms / 1000L))
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<< records.count() << "records"
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<< ev_mv->Min() << "<=Motion<=" << ev_mv->Max();
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*/
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sess->setMin(OXI_Pulse, ev_hr->Min());
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sess->setMax(OXI_Pulse, ev_hr->Max());
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sess->setMin(OXI_SPO2, ev_o2->Min());
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sess->setMax(OXI_SPO2, ev_o2->Max());
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sess->setMin(POS_Motion, ev_mv->Min());
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sess->setMax(POS_Motion, ev_mv->Max());
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sess->really_set_last(time_ms);
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return sess;
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}
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void ViatomLoader::SaveSessionToDatabase(Session* sess)
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{
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Machine* mach = sess->machine();
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sess->SetChanged(true);
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mach->AddSession(sess);
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mach->Save();
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}
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static bool viatom_initialized = false;
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void
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ViatomLoader::Register()
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{
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if (!viatom_initialized) {
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qDebug("Registering ViatomLoader");
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RegisterLoader(new ViatomLoader());
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//InitModelMap();
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viatom_initialized = true;
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}
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}
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// ===============================================================================================
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static QString ts(qint64 msecs)
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{
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// TODO: make this UTC so that tests don't vary by where they're run
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return QDateTime::fromMSecsSinceEpoch(msecs).toString(Qt::ISODate);
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}
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static QString dur(qint64 msecs)
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{
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qint64 s = msecs / 1000L;
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int h = s / 3600; s -= h * 3600;
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int m = s / 60; s -= m * 60;
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return QString("%1:%2:%3")
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.arg(h, 2, 10, QChar('0'))
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.arg(m, 2, 10, QChar('0'))
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.arg(s, 2, 10, QChar('0'));
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}
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// TODO: Merge this with PRS1 macros and generalize for all loaders.
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#define UNEXPECTED_VALUE(SRC, VALS) { \
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QString message = QString("%1:%2: %3 = %4 != %5").arg(__func__).arg(__LINE__).arg(#SRC).arg(SRC).arg(VALS); \
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qWarning() << this->m_sessionid << message; \
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s_unexpectedMessages += message; \
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}
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#define CHECK_VALUE(SRC, VAL) if ((SRC) != (VAL)) UNEXPECTED_VALUE(SRC, VAL)
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#define CHECK_VALUES(SRC, VAL1, VAL2) if ((SRC) != (VAL1) && (SRC) != (VAL2)) UNEXPECTED_VALUE(SRC, #VAL1 " or " #VAL2)
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// for more than 2 values, just write the test manually and use UNEXPECTED_VALUE if it fails
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ViatomFile::ViatomFile(QFile & file) : m_file(file)
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{
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}
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bool ViatomFile::ParseHeader()
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{
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static const int HEADER_SIZE = 40;
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QByteArray data = m_file.read(HEADER_SIZE);
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if (data.size() < HEADER_SIZE) {
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qDebug() << m_file.fileName() << "too short for a Viatom data file";
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return false;
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}
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const unsigned char* header = (const unsigned char*) data.constData();
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int sig = header[0] | (header[1] << 8);
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int year = header[2] | (header[3] << 8);
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int month = header[4];
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int day = header[5];
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int hour = header[6];
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int min = header[7];
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int sec = header[8];
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if (sig != 0x0003) {
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qDebug() << m_file.fileName() << "invalid signature for Viatom data file" << sig;
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return false;
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}
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if ((year < 2015 || year > 2059) || (month < 1 || month > 12) || (day < 1 || day > 31) ||
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(hour > 23) || (min > 59) || (sec > 59)) {
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qDebug() << m_file.fileName() << "invalid timestamp in Viatom data file";
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return false;
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}
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QDateTime data_timestamp = QDateTime(QDate(year, month, day), QTime(hour, min, sec));
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m_timestamp = data_timestamp.toMSecsSinceEpoch();
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m_sessionid = m_timestamp / 1000L;
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int filesize = header[9] | (header[10] << 8); // possibly 32-bit
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CHECK_VALUE(header[11], 0);
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CHECK_VALUE(header[12], 0);
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m_duration = header[13] | (header[14] << 8); // possibly 32-bit
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CHECK_VALUE(header[15], 0);
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CHECK_VALUE(header[16], 0);
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//int spo2_avg = header[17];
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//int spo2_min = header[18];
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//int spo2_3pct = header[19]; // number of events
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//int spo2_4pct = header[20]; // number of events
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CHECK_VALUE(header[21], 0);
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//int time_under_90pct = header[22]; // in seconds
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CHECK_VALUE(header[23], 0);
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//int events_under_90pct = header[24]; // number of distinct events
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//float o2_score = header[25] * 0.1;
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CHECK_VALUE(header[26], 0);
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CHECK_VALUE(header[27], 0);
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CHECK_VALUE(header[28], 0);
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CHECK_VALUE(header[29], 0);
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CHECK_VALUE(header[30], 0);
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CHECK_VALUE(header[31], 0);
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CHECK_VALUE(header[32], 0);
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CHECK_VALUE(header[33], 0);
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CHECK_VALUE(header[34], 0);
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CHECK_VALUE(header[35], 0);
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CHECK_VALUE(header[36], 0);
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CHECK_VALUE(header[37], 0);
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CHECK_VALUE(header[38], 0);
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CHECK_VALUE(header[39], 0);
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// Calculate timing resolution (in ms) of the data
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qint64 datasize = m_file.size() - HEADER_SIZE;
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m_record_count = datasize / RECORD_SIZE;
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m_resolution = m_duration / m_record_count * 1000L;
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if (m_resolution == 2000) {
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// Interestingly the file size in the header corresponds the number of
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// distinct samples. These files actually double-report each sample!
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// So this resolution isn't really the real one. The importer should
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// calculate resolution from duration / record count after reading the
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// records, which will be deduplicated.
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CHECK_VALUE(filesize, ((m_file.size() - HEADER_SIZE) / 2) + HEADER_SIZE);
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} else {
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CHECK_VALUE(filesize, m_file.size());
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}
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CHECK_VALUES(m_resolution, 2000, 4000);
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CHECK_VALUE(datasize % RECORD_SIZE, 0);
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CHECK_VALUE(m_duration % m_record_count, 0);
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qDebug().noquote() << m_file.fileName() << ts(m_timestamp) << dur(m_duration * 1000L) << ":" << m_record_count << "records @" << m_resolution << "ms";
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return true;
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}
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QList<ViatomFile::Record> ViatomFile::ReadData()
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{
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QByteArray data = m_file.readAll();
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QDataStream in(data);
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in.setByteOrder(QDataStream::LittleEndian);
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QList<ViatomFile::Record> records;
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// Read all Pulse, SPO2 and Motion data
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do {
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ViatomFile::Record rec;
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in >> rec.spo2 >> rec.hr >> rec._unk1 >> rec.motion >> rec._unk2;
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records.append(rec);
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} while (!in.atEnd());
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// TODO: deduplicate the samples
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/* It turns out 2s files are actually just double-reported samples!
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if (m_resolution == 2000) {
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CHECK_VALUE(records.size() % 2, 0);
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for (int i = 0; i < records.size(); i += 2) {
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auto & a = records.at(i);
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auto & b = records.at(i+1);
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CHECK_VALUE(a.spo2, b.spo2);
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CHECK_VALUE(a.hr, b.hr);
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CHECK_VALUE(a._unk1, b._unk1);
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CHECK_VALUE(a.motion, b.motion);
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CHECK_VALUE(a._unk2, b._unk2);
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}
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}
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*/
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return records;
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}
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