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ntndarray.cpp
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ntndarray.cpp
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/* ntndarray.cpp */
/*
* Copyright information and license terms for this software can be
* found in the file LICENSE that is included with the distribution
*/
#include <algorithm>
#define epicsExportSharedSymbols
#include <pv/ntndarray.h>
#include <pv/ntndarrayAttribute.h>
#include <pv/ntutils.h>
using namespace std;
using namespace epics::pvData;
namespace epics { namespace nt {
static NTFieldPtr ntField = NTField::get();
namespace detail {
static FieldCreatePtr fieldCreate = getFieldCreate();
static PVDataCreatePtr pvDataCreate = getPVDataCreate();
static Mutex mutex;
StructureConstPtr NTNDArrayBuilder::createStructure()
{
enum
{
DISCRIPTOR_INDEX,
TIMESTAMP_INDEX,
ALARM_INDEX,
DISPLAY_INDEX
};
const size_t NUMBER_OF_INDICES = DISPLAY_INDEX+1;
const size_t NUMBER_OF_STRUCTURES = 1 << NUMBER_OF_INDICES;
Lock xx(mutex);
static StructureConstPtr ntndarrayStruc[NUMBER_OF_STRUCTURES];
static UnionConstPtr valueType;
static StructureConstPtr codecStruc;
static StructureConstPtr dimensionStruc;
static StructureConstPtr attributeStruc;
StructureConstPtr returnedStruc;
size_t index = 0;
if (descriptor) index |= 1 << DISCRIPTOR_INDEX;
if (timeStamp) index |= 1 << TIMESTAMP_INDEX;
if (alarm) index |= 1 << ALARM_INDEX;
if (display) index |= 1 << DISPLAY_INDEX;
bool isExtended = !extraFieldNames.empty();
if (isExtended || !ntndarrayStruc[index])
{
StandardFieldPtr standardField = getStandardField();
FieldBuilderPtr fb = fieldCreate->createFieldBuilder();
if (!valueType)
{
for (int i = pvBoolean; i < pvString; ++i)
{
ScalarType st = static_cast<ScalarType>(i);
fb->addArray(std::string(ScalarTypeFunc::name(st)) + "Value", st);
}
valueType = fb->createUnion();
}
if (!codecStruc)
{
codecStruc = fb->setId("codec_t")->
add("name", pvString)->
add("parameters", fieldCreate->createVariantUnion())->
createStructure();
}
if (!dimensionStruc)
{
dimensionStruc = fb->setId("dimension_t")->
add("size", pvInt)->
add("offset", pvInt)->
add("fullSize", pvInt)->
add("binning", pvInt)->
add("reverse", pvBoolean)->
createStructure();
}
if (!attributeStruc)
{
attributeStruc = NTNDArrayAttribute::createBuilder()->createStructure();
}
fb->setId(NTNDArray::URI)->
add("value", valueType)->
add("codec", codecStruc)->
add("compressedSize", pvLong)->
add("uncompressedSize", pvLong)->
addArray("dimension", dimensionStruc)->
add("uniqueId", pvInt)->
add("dataTimeStamp", standardField->timeStamp())->
addArray("attribute", attributeStruc);
if (descriptor)
fb->add("descriptor", pvString);
if (alarm)
fb->add("alarm", standardField->alarm());
if (timeStamp)
fb->add("timeStamp", standardField->timeStamp());
if (display)
fb->add("display", standardField->display());
size_t extraCount = extraFieldNames.size();
for (size_t i = 0; i< extraCount; i++)
fb->add(extraFieldNames[i], extraFields[i]);
returnedStruc = fb->createStructure();
if (!isExtended)
ntndarrayStruc[index] = returnedStruc;
}
else
{
return ntndarrayStruc[index];
}
return returnedStruc;
}
NTNDArrayBuilder::shared_pointer NTNDArrayBuilder::addDescriptor()
{
descriptor = true;
return shared_from_this();
}
NTNDArrayBuilder::shared_pointer NTNDArrayBuilder::addAlarm()
{
alarm = true;
return shared_from_this();
}
NTNDArrayBuilder::shared_pointer NTNDArrayBuilder::addTimeStamp()
{
timeStamp = true;
return shared_from_this();
}
NTNDArrayBuilder::shared_pointer NTNDArrayBuilder::addDisplay()
{
display = true;
return shared_from_this();
}
PVStructurePtr NTNDArrayBuilder::createPVStructure()
{
return getPVDataCreate()->createPVStructure(createStructure());
}
NTNDArrayPtr NTNDArrayBuilder::create()
{
return NTNDArrayPtr(new NTNDArray(createPVStructure()));
}
NTNDArrayBuilder::NTNDArrayBuilder()
{
reset();
}
void NTNDArrayBuilder::reset()
{
descriptor = false;
timeStamp = false;
alarm = false;
display = false;
extraFieldNames.clear();
extraFields.clear();
}
NTNDArrayBuilder::shared_pointer NTNDArrayBuilder::add(string const & name, FieldConstPtr const & field)
{
extraFields.push_back(field); extraFieldNames.push_back(name);
return shared_from_this();
}
}
const std::string NTNDArray::URI("epics:nt/NTNDArray:1.0");
const std::string ntAttrStr("epics:nt/NTAttribute:1.0");
static FieldCreatePtr fieldCreate = getFieldCreate();
static PVDataCreatePtr pvDataCreate = getPVDataCreate();
class NTValueType
{
public:
static bool isCompatible(UnionConstPtr const &u)
{
if(!u.get()) return false;
if (u->getID() != Union::defaultId()) return false;
if (u->isVariant()) return false;
for (int i = pvBoolean; i != pvString; ++i)
{
ScalarType scalarType = static_cast<ScalarType>(i);
std::string name(ScalarTypeFunc::name(scalarType));
name += "Value";
ScalarArrayConstPtr scalarField = u->getField<ScalarArray>(name);
if (scalarField.get() == 0 ||
scalarField->getElementType() != scalarType)
return false;
}
return true;
}
};
class NTCodec
{
public:
static bool isCompatible(StructureConstPtr const &structure)
{
if(!structure.get()) return false;
if (structure->getID() != "codec_t") return false;
ScalarConstPtr scalarField = structure->getField<Scalar>("name");
if (scalarField.get() == 0 || scalarField->getScalarType() != pvString)
return false;
UnionConstPtr paramField = structure->getField<Union>("parameters");
if (paramField.get() == 0 || !paramField->isVariant())
return false;
return true;
}
};
class NTDimension
{
public:
static bool isCompatible(StructureConstPtr const &structure)
{
if(!structure.get()) return false;
if (structure->getID() != "dimension_t") return false;
ScalarConstPtr scalarField = structure->getField<Scalar>("size");
if (scalarField.get() == 0 || scalarField->getScalarType() != pvInt)
return false;
scalarField = structure->getField<Scalar>("offset");
if (scalarField.get() == 0 || scalarField->getScalarType() != pvInt)
return false;
scalarField = structure->getField<Scalar>("fullSize");
if (scalarField.get() == 0 || scalarField->getScalarType() != pvInt)
return false;
scalarField = structure->getField<Scalar>("binning");
if (scalarField.get() == 0 || scalarField->getScalarType() != pvInt)
return false;
scalarField = structure->getField<Scalar>("reverse");
if (scalarField.get() == 0 || scalarField->getScalarType() != pvBoolean)
return false;
return true;
}
};
NTNDArray::shared_pointer NTNDArray::wrap(PVStructurePtr const & pvStructure)
{
if(!isCompatible(pvStructure)) return shared_pointer();
return wrapUnsafe(pvStructure);
}
NTNDArray::shared_pointer NTNDArray::wrapUnsafe(PVStructurePtr const & pvStructure)
{
return shared_pointer(new NTNDArray(pvStructure));
}
bool NTNDArray::is_a(StructureConstPtr const & structure)
{
return NTUtils::is_a(structure->getID(), URI);
}
bool NTNDArray::is_a(PVStructurePtr const & pvStructure)
{
return is_a(pvStructure->getStructure());
}
bool NTNDArray::isCompatible(StructureConstPtr const &structure)
{
if(!structure.get()) return false;
UnionConstPtr valueField = structure->getField<Union>("value");
if(!NTValueType::isCompatible(valueField)) return false;
StructureConstPtr codecField = structure->getField<Structure>("codec");
if(!NTCodec::isCompatible(codecField)) return false;
ScalarConstPtr compressedSizeField = structure->getField<Scalar>("compressedSize");
if (compressedSizeField.get() == 0)
return false;
if (compressedSizeField->getScalarType() != pvLong)
return false;
ScalarConstPtr uncompressedSizeField = structure->getField<Scalar>("uncompressedSize");
if (uncompressedSizeField.get() == 0)
return false;
if (uncompressedSizeField->getScalarType() != pvLong)
return false;
StructureArrayConstPtr dimensionField = structure->getField<StructureArray>("dimension");
if (dimensionField.get() == 0)
return false;
StructureConstPtr dimElementStruc = dimensionField->getStructure();
if(!NTDimension::isCompatible(dimElementStruc))
return false;
NTFieldPtr ntField = NTField::get();
StructureConstPtr dataTimeStampField = structure->getField<Structure>(
"dataTimeStamp");
if (dataTimeStampField.get() == 0 || !ntField->isTimeStamp(dataTimeStampField))
return false;
ScalarConstPtr uniqueIdField = structure->getField<Scalar>("uniqueId");
if (uniqueIdField.get() == 0)
return false;
if (uniqueIdField->getScalarType() != pvInt)
return false;
StructureArrayConstPtr attributeField = structure->getField<StructureArray>( "attribute");
StructureConstPtr attributeElementStruc = attributeField->getStructure();
if (!NTNDArrayAttribute::isCompatible(attributeElementStruc))
return false;
FieldConstPtr field = structure->getField("descriptor");
if (field.get())
{
ScalarConstPtr descriptorField = structure->getField<Scalar>("descriptor");
if (!descriptorField.get() || descriptorField->getScalarType() != pvString)
return false;
}
field = structure->getField("alarm");
if (field.get() && !ntField->isAlarm(field))
return false;
field = structure->getField("timeStamp");
if (field.get() && !ntField->isTimeStamp(field))
return false;
field = structure->getField("display");
if (field.get() && !ntField->isDisplay(field))
return false;
return true;
}
bool NTNDArray::isCompatible(PVStructurePtr const & pvStructure)
{
if(!pvStructure.get()) return false;
return isCompatible(pvStructure->getStructure());
}
bool NTNDArray::isValid()
{
int64 valueSize = getValueSize();
int64 compressedSize = getCompressedDataSize()->get();
if (valueSize != compressedSize)
return false;
long expectedUncompressed = getExpectedUncompressedSize();
long uncompressedSize = getUncompressedDataSize()->get();
if (uncompressedSize != expectedUncompressed)
return false;
std::string codecName = getCodec()->getSubField<PVString>("name")->get();
if (codecName == "" && valueSize < uncompressedSize)
return false;
return true;
}
int64 NTNDArray::getExpectedUncompressedSize()
{
int64 size = 0;
PVStructureArrayPtr pvDim = getDimension();
if (pvDim->getLength() != 0)
{
PVStructureArray::const_svector data = pvDim->view();
size = getValueTypeSize();
for (PVStructureArray::const_svector::const_iterator it = data.begin();
it != data.end(); ++it )
{
PVStructurePtr dim = *it;
size *= dim->getSubField<PVInt>("size")->get();
}
}
return size;
}
int64 NTNDArray::getValueSize()
{
int64 size = 0;
PVScalarArrayPtr storedValue = getValue()->get<PVScalarArray>();
if (!storedValue.get())
{
size = storedValue->getLength()*getValueTypeSize();
}
return size;
}
int64 NTNDArray::getValueTypeSize()
{
int64 typeSize = 0;
PVScalarArrayPtr storedValue = getValue()->get<PVScalarArray>();
if (storedValue.get())
{
switch (storedValue->getScalarArray()->getElementType())
{
case pvBoolean:
case pvByte:
case pvUByte:
typeSize = 1;
break;
case pvShort:
case pvUShort:
typeSize = 2;
break;
case pvInt:
case pvUInt:
case pvFloat:
typeSize = 4;
break;
case pvLong:
case pvULong:
case pvDouble:
typeSize = 8;
break;
default:
break;
}
}
return typeSize;
}
NTNDArrayBuilderPtr NTNDArray::createBuilder()
{
return NTNDArrayBuilderPtr(new detail::NTNDArrayBuilder());
}
bool NTNDArray::attachTimeStamp(PVTimeStamp &pvTimeStamp) const
{
PVStructurePtr ts = getTimeStamp();
if (ts)
return pvTimeStamp.attach(ts);
else
return false;
}
bool NTNDArray::attachDataTimeStamp(PVTimeStamp &pvTimeStamp) const
{
PVStructurePtr ts = getDataTimeStamp();
if (ts)
return pvTimeStamp.attach(ts);
else
return false;
}
bool NTNDArray::attachAlarm(PVAlarm &pvAlarm) const
{
PVStructurePtr al = getAlarm();
if (al)
return pvAlarm.attach(al);
else
return false;
}
bool NTNDArray::attachDisplay(PVDisplay &pvDisplay) const
{
PVStructurePtr dp = getDisplay();
if (dp)
return pvDisplay.attach(dp);
else
return false;
}
PVStructurePtr NTNDArray::getPVStructure() const
{
return pvNTNDArray;
}
PVUnionPtr NTNDArray::getValue() const
{
return pvNTNDArray->getSubField<PVUnion>("value");
}
PVStructurePtr NTNDArray::getCodec() const
{
return pvNTNDArray->getSubField<PVStructure>("codec");
}
PVLongPtr NTNDArray::getCompressedDataSize() const
{
return pvNTNDArray->getSubField<PVLong>("compressedSize");
}
PVLongPtr NTNDArray::getUncompressedDataSize() const
{
return pvNTNDArray->getSubField<PVLong>("uncompressedSize");
}
PVStructureArrayPtr NTNDArray::getDimension() const
{
return pvNTNDArray->getSubField<PVStructureArray>("dimension");
}
PVIntPtr NTNDArray::getUniqueId() const
{
return pvNTNDArray->getSubField<PVInt>("uniqueId");
}
PVStructurePtr NTNDArray::getDataTimeStamp() const
{
return pvNTNDArray->getSubField<PVStructure>("dataTimeStamp");
}
PVStructureArrayPtr NTNDArray::getAttribute() const
{
return pvNTNDArray->getSubField<PVStructureArray>("attribute");
}
PVStringPtr NTNDArray::getDescriptor() const
{
return pvNTNDArray->getSubField<PVString>("descriptor");
}
PVStructurePtr NTNDArray::getTimeStamp() const
{
return pvNTNDArray->getSubField<PVStructure>("timeStamp");
}
PVStructurePtr NTNDArray::getAlarm() const
{
return pvNTNDArray->getSubField<PVStructure>("alarm");
}
PVStructurePtr NTNDArray::getDisplay() const
{
return pvNTNDArray->getSubField<PVStructure>("display");
}
NTNDArray::NTNDArray(PVStructurePtr const & pvStructure) :
pvNTNDArray(pvStructure)
{}
}}