epicsarray.cpp

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#include "epicsarray.h"
#include <QMutexLocker>

#include <stdio.h>

EpicsArray::EpicsArray(QString pvName, QObject *parent, int debug)
  : EpicsObject(pvName, parent, debug)
{
}

EpicsArray::~EpicsArray()
{
}

void EpicsArray::event_handler(struct event_handler_args args)
{
  union db_access_val *pb = (union db_access_val *) args.dbr;
  EpicsArray* ar = (EpicsArray*) args.usr;

  if (ar && ar->debug()) {
    printf("%s EpicsArray Event Handler called %ld(%ld)\n",
           ca_name(args.chid), args.type, args.count);
  }

  QVector<double> res(args.count);

  switch (args.type) {
  case DBR_SHORT:
    for (int i=0; i<args.count; i++) {
      res[i] = (&pb->shrtval)[i];
    }
    break;
//   case DBR_INT:
//     for (int i=0; i<args.count; i++) {
//       res[i] = (&pb->intval)[i];
//     }
//     break;
  case DBR_LONG:
    for (int i=0; i<args.count; i++) {
      res[i] = (&pb->longval)[i];
    }
    break;
  case DBR_FLOAT:
    for (int i=0; i<args.count; i++) {
      res[i] = (&pb->fltval)[i];
    }
    break;
  case DBR_DOUBLE:
    for (int i=0; i<args.count; i++) {
      res[i] = (&pb->doubleval)[i];
    }
    break;
  default:
    printf("Array data type %ld not supported\n", args.type);

    return;
  }

  ((EpicsArray*) args.usr) -> changeValue(res);
}

caEventCallBackFunc *EpicsArray::get_event_handler()
{
  return &EpicsArray::event_handler;
}

void EpicsArray::changeValue(QVector<double> newval)
{
  if (m_Debug) {
    printf("EpicsArray::changeValue\n");
  }

  QMutexLocker lock(&m_Mutex);

  if (m_Value != newval) {
    m_Value = newval;
    if (m_Debug) {
      printf("EpicsArray::changeValue emit valueChanged()\n");
    }
    emit valueChanged();
  }
}

void EpicsArray::caput(QVector<double> val)
{
  ca_array_put(DBR_DOUBLE, val.count(), channelID(), val.data()); 
  ca_pend_io(0.5);
}

QVector<double> EpicsArray::value()
{
  QMutexLocker lock(&m_Mutex);

  return m_Value;
}