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/*****************************************************************************/
/* Xdmf */
/* eXtensible Data Model and Format */
/* */
/* Id : XdmfBinaryController.cpp */
/* */
/* Author: */
/* Kenneth Leiter */
/* kenneth.leiter@arl.army.mil */
/* US Army Research Laboratory */
/* Aberdeen Proving Ground, MD */
/* */
/* Copyright @ 2011 US Army Research Laboratory */
/* All Rights Reserved */
/* See Copyright.txt for details */
/* */
/* This software is distributed WITHOUT ANY WARRANTY; without */
/* even the implied warranty of MERCHANTABILITY or FITNESS */
/* FOR A PARTICULAR PURPOSE. See the above copyright notice */
/* for more information. */
/* */
/*****************************************************************************/
#include <fstream>
#include <sstream>
#include "XdmfArray.hpp"
#include "XdmfArrayType.hpp"
#include "XdmfBinaryController.hpp"
#include "XdmfError.hpp"
namespace {
template<size_t T>
struct ByteSwaper {
static inline void swap(void * p){}
static inline void swap(void * p,
unsigned int length)
{
char * data = static_cast<char *>(p);
for(unsigned int i=0; i<length; ++i, data+=T){
ByteSwaper<T>::swap(data);
}
}
};
template<>
void ByteSwaper<2>::swap(void * p){
char one_byte;
char* data = static_cast<char*>(p);
one_byte = data[0]; data[0] = data[1]; data[1] = one_byte;
}
template<>
void ByteSwaper<4>::swap(void * p){
char one_byte;
char* data = static_cast<char*>(p);
one_byte = data[0]; data[0] = data[3]; data[3] = one_byte;
one_byte = data[1]; data[1] = data[2]; data[2] = one_byte;
}
template<>
void ByteSwaper<8>::swap(void * p){
char one_byte;
char* data = static_cast<char*>(p);
one_byte = data[0]; data[0] = data[7]; data[7] = one_byte;
one_byte = data[1]; data[1] = data[6]; data[6] = one_byte;
one_byte = data[2]; data[2] = data[5]; data[5] = one_byte;
one_byte = data[3]; data[3] = data[4]; data[4] = one_byte;
}
}
shared_ptr<XdmfBinaryController>
XdmfBinaryController::New(const std::string & filePath,
const shared_ptr<const XdmfArrayType> & type,
const Endian & endian,
const unsigned int seek,
const std::vector<unsigned int> & dimensions)
{
shared_ptr<XdmfBinaryController> p(new XdmfBinaryController(filePath,
type,
endian,
seek,
std::vector<unsigned int>(dimensions.size(), 0),
std::vector<unsigned int>(dimensions.size(), 1),
dimensions,
dimensions));
return p;
}
shared_ptr<XdmfBinaryController>
XdmfBinaryController::New(const std::string & filePath,
const shared_ptr<const XdmfArrayType> & type,
const Endian & endian,
const unsigned int seek,
const std::vector<unsigned int> & starts,
const std::vector<unsigned int> & strides,
const std::vector<unsigned int> & dimensions,
const std::vector<unsigned int> & dataspaces)
{
shared_ptr<XdmfBinaryController> p(new XdmfBinaryController(filePath,
type,
endian,
seek,
starts,
strides,
dimensions,
dataspaces));
return p;
}
XdmfBinaryController::XdmfBinaryController(const std::string & filePath,
const shared_ptr<const XdmfArrayType> & type,
const Endian & endian,
const unsigned int seek,
const std::vector<unsigned int> & starts,
const std::vector<unsigned int> & strides,
const std::vector<unsigned int> & dimensions,
const std::vector<unsigned int> & dataspaces) :
XdmfHeavyDataController(filePath,
type,
starts,
strides,
dimensions,
dataspaces),
mEndian(endian),
mSeek(seek)
{
}
XdmfBinaryController::XdmfBinaryController(const XdmfBinaryController & refController):
XdmfHeavyDataController(refController),
mEndian(refController.mEndian),
mSeek(refController.mSeek)
{
}
XdmfBinaryController::~XdmfBinaryController()
{
}
std::string
XdmfBinaryController::getDataspaceDescription() const
{
std::stringstream descstream;
descstream << mSeek << ":" << XdmfHeavyDataController::getDataspaceDescription();
return descstream.str();
}
XdmfBinaryController::Endian
XdmfBinaryController::getEndian() const
{
return mEndian;
}
std::string
XdmfBinaryController::getName() const
{
return "Binary";
}
void
XdmfBinaryController::getProperties(std::map<std::string, std::string> & collectedProperties) const
{
collectedProperties["Format"] = this->getName();
if(mEndian == BIG) {
collectedProperties["Endian"] = "Big";
}
else if(mEndian == LITTLE) {
collectedProperties["Endian"] = "Little";
}
}
unsigned int
XdmfBinaryController::getSeek() const
{
return mSeek;
}
void
XdmfBinaryController::read(XdmfArray * const array)
{
array->initialize(mType, mDimensions);
shared_ptr<XdmfArray> dataspaceArray = XdmfArray::New();
dataspaceArray->initialize(mType, mDataspaceDimensions);
std::ifstream fileStream(mFilePath.c_str(),
std::ifstream::binary);
if(!fileStream.good()) {
XdmfError::message(XdmfError::FATAL,
"Error reading " + mFilePath +
" in XdmfBinaryController::read");
}
fileStream.seekg(mSeek);
if(!fileStream.good()) {
XdmfError::message(XdmfError::FATAL,
"Error seeking " + mFilePath +
" in XdmfBinaryController::read");
}
fileStream.read(static_cast<char *>(dataspaceArray->getValuesInternal()),
dataspaceArray->getSize() * mType->getElementSize());
#if defined(XDMF_BIG_ENDIAN)
const bool needByteSwap = mEndian == LITTLE;
#else
const bool needByteSwap = mEndian == BIG;
#endif // XDMF_BIG_ENDIAN
if(needByteSwap) {
switch(mType->getElementSize()){
case 1:
break;
case 2:
ByteSwaper<2>::swap(dataspaceArray->getValuesInternal(),
dataspaceArray->getSize());
break;
case 4:
ByteSwaper<4>::swap(dataspaceArray->getValuesInternal(),
dataspaceArray->getSize());
break;
case 8:
ByteSwaper<8>::swap(dataspaceArray->getValuesInternal(),
dataspaceArray->getSize());
break;
default:
XdmfError::message(XdmfError::FATAL,
"Cannot perform endianness swap for datatype");
break;
}
}
array->insert(std::vector<unsigned int>(mDimensions.size(), 0),
dataspaceArray,
mStart,
mDataspaceDimensions,
mDimensions,
std::vector<unsigned int>(mDimensions.size(), 1),
mStride);
}
// C Wrappers
XDMFBINARYCONTROLLER *
XdmfBinaryControllerNew(char * filePath,
int type,
int endian,
unsigned int seek,
unsigned int * dimensions,
unsigned int numDims,
int * status)
{
XDMF_ERROR_WRAP_START(status)
std::vector<unsigned int> dimVector(dimensions, dimensions + numDims);
shared_ptr<const XdmfArrayType> buildType = shared_ptr<XdmfArrayType>();
switch (type) {
case XDMF_ARRAY_TYPE_UINT8:
buildType = XdmfArrayType::UInt8();
break;
case XDMF_ARRAY_TYPE_UINT16:
buildType = XdmfArrayType::UInt16();
break;
case XDMF_ARRAY_TYPE_UINT32:
buildType = XdmfArrayType::UInt32();
break;
case XDMF_ARRAY_TYPE_INT8:
buildType = XdmfArrayType::Int8();
break;
case XDMF_ARRAY_TYPE_INT16:
buildType = XdmfArrayType::Int16();
break;
case XDMF_ARRAY_TYPE_INT32:
buildType = XdmfArrayType::Int32();
break;
case XDMF_ARRAY_TYPE_INT64:
buildType = XdmfArrayType::Int64();
break;
case XDMF_ARRAY_TYPE_FLOAT32:
buildType = XdmfArrayType::Float32();
break;
case XDMF_ARRAY_TYPE_FLOAT64:
buildType = XdmfArrayType::Float64();
break;
default:
XdmfError::message(XdmfError::FATAL,
"Error: Invalid ArrayType.");
break;
}
XdmfBinaryController::Endian buildEndian = XdmfBinaryController::NATIVE;
printf("switch endian = %u\n", endian);
switch (endian) {
case XDMF_BINARY_CONTROLLER_ENDIAN_BIG:
buildEndian = XdmfBinaryController::BIG;
break;
case XDMF_BINARY_CONTROLLER_ENDIAN_LITTLE:
buildEndian = XdmfBinaryController::LITTLE;
break;
case XDMF_BINARY_CONTROLLER_ENDIAN_NATIVE:
buildEndian = XdmfBinaryController::NATIVE;
break;
default:
XdmfError::message(XdmfError::FATAL,
"Error: Invalid Endian.");
break;
}
shared_ptr<XdmfBinaryController> generatedController = XdmfBinaryController::New(std::string(filePath), buildType, buildEndian, seek, dimVector);
return (XDMFBINARYCONTROLLER *)((void *)(new XdmfBinaryController(*generatedController.get())));
XDMF_ERROR_WRAP_END(status)
return NULL;
}
XDMFBINARYCONTROLLER *
XdmfBinaryControllerNewHyperslab(char * filePath,
int type,
int endian,
unsigned int seek,
unsigned int * start,
unsigned int * stride,
unsigned int * dimensions,
unsigned int * dataspaceDimensions,
unsigned int numDims,
int * status)
{
XDMF_ERROR_WRAP_START(status)
std::vector<unsigned int> startVector(start, start + numDims);
std::vector<unsigned int> strideVector(stride, stride + numDims);
std::vector<unsigned int> dimVector(dimensions, dimensions + numDims);
std::vector<unsigned int> dataspaceVector(dataspaceDimensions, dataspaceDimensions + numDims);
shared_ptr<const XdmfArrayType> buildType = shared_ptr<XdmfArrayType>();
switch (type) {
case XDMF_ARRAY_TYPE_UINT8:
buildType = XdmfArrayType::UInt8();
break;
case XDMF_ARRAY_TYPE_UINT16:
buildType = XdmfArrayType::UInt16();
break;
case XDMF_ARRAY_TYPE_UINT32:
buildType = XdmfArrayType::UInt32();
break;
case XDMF_ARRAY_TYPE_INT8:
buildType = XdmfArrayType::Int8();
break;
case XDMF_ARRAY_TYPE_INT16:
buildType = XdmfArrayType::Int16();
break;
case XDMF_ARRAY_TYPE_INT32:
buildType = XdmfArrayType::Int32();
break;
case XDMF_ARRAY_TYPE_INT64:
buildType = XdmfArrayType::Int64();
break;
case XDMF_ARRAY_TYPE_FLOAT32:
buildType = XdmfArrayType::Float32();
break;
case XDMF_ARRAY_TYPE_FLOAT64:
buildType = XdmfArrayType::Float64();
break;
default:
XdmfError::message(XdmfError::FATAL,
"Error: Invalid ArrayType.");
break;
}
XdmfBinaryController::Endian buildEndian = XdmfBinaryController::NATIVE;
switch (endian) {
case XDMF_BINARY_CONTROLLER_ENDIAN_BIG:
buildEndian = XdmfBinaryController::BIG;
break;
case XDMF_BINARY_CONTROLLER_ENDIAN_LITTLE:
buildEndian = XdmfBinaryController::LITTLE;
break;
case XDMF_BINARY_CONTROLLER_ENDIAN_NATIVE:
buildEndian = XdmfBinaryController::NATIVE;
break;
default:
XdmfError::message(XdmfError::FATAL,
"Error: Invalid Endian.");
break;
}
shared_ptr<XdmfBinaryController> generatedController = XdmfBinaryController::New(std::string(filePath), buildType, buildEndian, seek, startVector, strideVector, dimVector, dataspaceVector);
return (XDMFBINARYCONTROLLER *)((void *)(new XdmfBinaryController(*generatedController.get())));
XDMF_ERROR_WRAP_END(status)
return NULL;
}
int
XdmfBinaryControllerGetEndian(XDMFBINARYCONTROLLER * controller)
{
return ((XdmfBinaryController *)(controller))->getEndian();
}
unsigned int
XdmfBinaryControllerGetSeek(XDMFBINARYCONTROLLER * controller)
{
return ((XdmfBinaryController *)(controller))->getSeek();
}
// C Wrappers for parent classes are generated by macros
XDMF_HEAVYCONTROLLER_C_CHILD_WRAPPER(XdmfBinaryController, XDMFBINARYCONTROLLER)
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