/* -*- 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 Event Class 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 <QDebug>
#include "event.h"

EventList::EventList(EventListType et,EventDataType gain, EventDataType offset, EventDataType min, EventDataType max,double rate,bool second_field)
    :m_type(et),m_gain(gain),m_offset(offset),m_min(min),m_max(max),m_rate(rate),m_second_field(second_field)
{
    m_first=m_last=0;
    m_count=0;

    if (min==max) {  // Update Min & Max unless forceably set here..
        m_update_minmax=true;
        m_min2=m_min=999999999;
        m_max2=m_max=-999999999;

    } else {
        m_update_minmax=false;
    }

    m_data.reserve(2048);

    // Reserve a few to increase performace??
}
EventList::~EventList()
{
}
void EventList::clear()
{
    m_min2=m_min=999999999;
    m_max2=m_max=-999999999;
    m_update_minmax=true;
    m_first=m_last=0;
    m_count=0;

    m_data.clear();
    m_data2.clear();
    m_time.clear();

}

qint64 EventList::time(quint32 i)
{
    if (m_type==EVL_Event) {
        return m_first+qint64(m_time[i]);
    }

    return m_first+qint64((EventDataType(i)*m_rate));
}

EventDataType EventList::data(quint32 i)
{
    return EventDataType(m_data[i])*m_gain;
}
EventDataType EventList::data2(quint32 i)
{
    return EventDataType(m_data2[i]);
}

void EventList::AddEvent(qint64 time, EventStoreType data)
{
    m_data.push_back(data);

    // Apply gain & offset
    EventDataType val=EventDataType(data)*m_gain; // ignoring m_offset

    if (m_update_minmax) {
        if (m_count==0) {
            m_max=m_min=val;
        } else {
            if (m_min>val) m_min=val;
            if (m_max<val) m_max=val;
        }
    }

    if (!m_first) {
        m_first=time;
        m_last=time;
    }
    if (m_first>time) {
        // Crud.. Update all the previous records
        // This really shouldn't happen.

        qint32 t=(m_first-time);
        for (quint32 i=0;i<m_count;i++) {
            m_time[i]-=t;
        }
        m_first=time;
    }
    if (m_last < time)
        m_last=time;

    quint32 t=(time-m_first);

    m_time.push_back(t);
    m_count++;
}

void EventList::AddEvent(qint64 time, EventStoreType data, EventStoreType data2)
{
    // Apply gain & offset
    m_data.push_back(data);

    if (m_second_field) {
        m_data2.push_back(data2);
        if (m_min2>data2) m_min2=data2;
        if (m_max2<data2) m_max2=data2;
    }

    EventDataType val=EventDataType(data)*m_gain+m_offset;
    if (m_update_minmax) {
        if (m_min>val) m_min=val;
        if (m_max<val) m_max=val;
    }

    if (!m_first) {
        m_first=time;
        m_last=time;
    }
    if (m_first>time) {
        // Crud.. Update all the previous records
        // This really shouldn't happen.

        qint32 t=(m_first-time);
        for (quint32 i=0;i<m_count;i++) {
            m_time[i]-=t;
        }
        m_first=time;
    }
    if (m_last < time)
        m_last=time;

    quint32 t=(time-m_first);

    m_time.push_back(t);
    m_count++;
}

// Adds a consecutive waveform chunk
void EventList::AddWaveform(qint64 start, qint16 * data, int recs, qint64 duration)
{
    if (m_type!=EVL_Waveform) {
        qWarning() << "Attempted to add waveform data to non-waveform object";
        return;
    }
    if (!m_rate) {
        qWarning() << "Attempted to add waveform without setting sample rate";
        return;
    }
    qint64 last=start+duration;
    if (!m_first) {
        m_first=start;
        m_last=last;
    }
    if (m_last>start) {
        //qWarning() << "Attempted to add waveform with previous timestamp";
       // return;

        // technically start should equal m_last+1 sample.. check this too.
    }
    if (m_last<last) {
        m_last=last;
    }
    // TODO: Check waveform chunk really is contiguos
    //double rate=duration/recs;

    //realloc buffers.
    int r=m_count;
    m_count+=recs;
    m_data.resize(m_count);

    EventStoreType *edata=m_data.data();

    EventStoreType raw;
    qint16 * ep=data+recs;
    qint16 * sp;
    EventStoreType * dp=&edata[r];

    if (m_update_minmax) {
        register EventDataType min=m_min,max=m_max,val,gain=m_gain;
        //if (m_offset;
        for (sp=data; sp<ep; sp++) {
            *dp++=raw=*sp;
            val=EventDataType(*sp)*gain+m_offset;
            if (min > val) min=val;
            if (max < val) max=val;
        }
        m_min=min;
        m_max=max;
    } else {
        //register EventDataType val,gain=m_gain;
        for (sp=data; sp < ep; sp++) {
            *dp++=raw=*sp;
            //val=EventDataType(raw)*gain;
        }
    }

}
void EventList::AddWaveform(qint64 start, unsigned char * data, int recs, qint64 duration)
{
    if (m_type!=EVL_Waveform) {
        qWarning() << "Attempted to add waveform data to non-waveform object";
        return;
    }
    if (!m_rate) {
        qWarning() << "Attempted to add waveform without setting sample rate";
        return;
    }
    // duration=recs*rate;
    qint64 last=start+duration;
    if (!m_first) {
        m_first=start;
        m_last=last;
    }
    if (m_last>start) {
        //qWarning() << "Attempted to add waveform with previous timestamp";
       // return;

        // technically start should equal m_last+1 sample.. check this too.
    }
    if (m_last<last) {
        m_last=last;
    }

    // TODO: Check waveform chunk really is contiguos

    //realloc buffers.
    int r=m_count;
    m_count+=recs;
    m_data.resize(m_count);

    EventStoreType *edata=m_data.data();
    EventStoreType raw;
    EventDataType val;

    unsigned char * sp;
    unsigned char * ep=data+recs;
    EventStoreType * dp=&edata[r];

    if (m_update_minmax) {
        // ignoring m_offset
        for (sp=data; sp < ep; sp++) {
            raw=*sp;
            val=EventDataType(raw)*m_gain;
            if (m_min>val) m_min=val;
            if (m_max<val) m_max=val;
            *dp++=raw;
        }
    } else {
        for (sp=data; sp < ep; sp++) {
            raw=*sp;
            val=EventDataType(raw)*m_gain;
            *dp++=raw;
        }
    }

}
void EventList::AddWaveform(qint64 start, char * data, int recs, qint64 duration)
{
    if (m_type!=EVL_Waveform) {
        qWarning() << "Attempted to add waveform data to non-waveform object";
        return;
    }
    if (!m_rate) {
        qWarning() << "Attempted to add waveform without setting sample rate";
        return;
    }
    // duration=recs*rate;
    qint64 last=start+duration;
    if (!m_first) {
        m_first=start;
        m_last=last;
    } else {
        if (m_last>start) {
            //qWarning() << "Attempted to add waveform with previous timestamp";
            //return;

            // technically start should equal m_last+1 sample.. check this too.
        }
        if (m_last<last) {
            m_last=last;
        }
    }

    // TODO: Check waveform chunk really is contiguos

    //realloc buffers.

    int r=m_count;
    m_count+=recs;
    m_data.resize(m_count);

    EventStoreType *edata=m_data.data();
    EventStoreType raw;
    EventDataType val;

    char * sp;
    char * ep=data+recs;
    EventStoreType * dp=&edata[r];

    if (m_update_minmax) {
        for (sp=data; sp < ep; sp++) {
            raw=*sp;
            val=EventDataType(val)*m_gain+m_offset;
            if (m_min>val) m_min=val;
            if (m_max<val) m_max=val;
            *dp++=raw;
        }
    } else {
        for (sp=data; sp < ep; sp++) {
            raw=*sp;
            val=EventDataType(val)*m_gain+m_offset;
            *dp++=raw;
        }
    }
}