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hfaopen.cpp
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/******************************************************************************
*
* Project: Erdas Imagine (.img) Translator
* Purpose: Supporting functions for HFA (.img) ... main (C callable) API
* that is not dependent on GDAL (just CPL).
* Author: Frank Warmerdam, [email protected]
*
******************************************************************************
* Copyright (c) 1999, Intergraph Corporation
* Copyright (c) 2007-2011, Even Rouault <even dot rouault at spatialys.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
******************************************************************************
*
* hfaopen.cpp
*
* Supporting routines for reading Erdas Imagine (.imf) Hierarchical
* File Architecture files. This is intended to be a library independent
* of the GDAL core, but dependent on the Common Portability Library.
*
*/
#include "cpl_port.h"
#include "hfa_p.h"
#include <cerrno>
#include <climits>
#include <cmath>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <algorithm>
#include <memory>
#include <string>
#include <vector>
#include "cpl_conv.h"
#include "cpl_error.h"
#include "cpl_string.h"
#include "cpl_vsi.h"
#include "gdal_priv.h"
#include "hfa.h"
#include "ogr_proj_p.h"
#include "proj.h"
constexpr double R2D = 180.0 / M_PI;
constexpr double RAD2ARCSEC = 648000.0 / M_PI;
static const char *const apszAuxMetadataItems[] = {
// node/entry field_name metadata_key type
"Statistics",
"dminimum",
"STATISTICS_MINIMUM",
"Esta_Statistics",
"Statistics",
"dmaximum",
"STATISTICS_MAXIMUM",
"Esta_Statistics",
"Statistics",
"dmean",
"STATISTICS_MEAN",
"Esta_Statistics",
"Statistics",
"dmedian",
"STATISTICS_MEDIAN",
"Esta_Statistics",
"Statistics",
"dmode",
"STATISTICS_MODE",
"Esta_Statistics",
"Statistics",
"dstddev",
"STATISTICS_STDDEV",
"Esta_Statistics",
"HistogramParameters",
"lBinFunction.numBins",
"STATISTICS_HISTONUMBINS",
"Eimg_StatisticsParameters830",
"HistogramParameters",
"dBinFunction.minLimit",
"STATISTICS_HISTOMIN",
"Eimg_StatisticsParameters830",
"HistogramParameters",
"dBinFunction.maxLimit",
"STATISTICS_HISTOMAX",
"Eimg_StatisticsParameters830",
"StatisticsParameters",
"lSkipFactorX",
"STATISTICS_SKIPFACTORX",
"",
"StatisticsParameters",
"lSkipFactorY",
"STATISTICS_SKIPFACTORY",
"",
"StatisticsParameters",
"dExcludedValues",
"STATISTICS_EXCLUDEDVALUES",
"",
"",
"elayerType",
"LAYER_TYPE",
"",
"RRDInfoList",
"salgorithm.string",
"OVERVIEWS_ALGORITHM",
"Emif_String",
nullptr};
const char *const *GetHFAAuxMetaDataList()
{
return apszAuxMetadataItems;
}
/************************************************************************/
/* HFAGetDictionary() */
/************************************************************************/
static char *HFAGetDictionary(HFAHandle hHFA)
{
int nDictMax = 100;
char *pszDictionary = static_cast<char *>(CPLMalloc(nDictMax));
int nDictSize = 0;
if (VSIFSeekL(hHFA->fp, hHFA->nDictionaryPos, SEEK_SET) < 0)
{
pszDictionary[nDictSize] = '\0';
return pszDictionary;
}
while (true)
{
if (nDictSize >= nDictMax - 1)
{
nDictMax = nDictSize * 2 + 100;
pszDictionary =
static_cast<char *>(CPLRealloc(pszDictionary, nDictMax));
}
if (VSIFReadL(pszDictionary + nDictSize, 1, 1, hHFA->fp) < 1 ||
pszDictionary[nDictSize] == '\0' ||
(nDictSize > 2 && pszDictionary[nDictSize - 2] == ',' &&
pszDictionary[nDictSize - 1] == '.'))
break;
nDictSize++;
}
pszDictionary[nDictSize] = '\0';
return pszDictionary;
}
/************************************************************************/
/* HFAOpen() */
/************************************************************************/
HFAHandle HFAOpen(const char *pszFilename, const char *pszAccess)
{
VSILFILE *fp = VSIFOpenL(
pszFilename,
(EQUAL(pszAccess, "r") || EQUAL(pszAccess, "rb")) ? "rb" : "r+b");
// Should this be changed to use some sort of CPLFOpen() which will
// set the error?
if (fp == nullptr)
{
CPLError(CE_Failure, CPLE_OpenFailed, "File open of %s failed.",
pszFilename);
return nullptr;
}
// Read and verify the header.
char szHeader[16] = {};
if (VSIFReadL(szHeader, 16, 1, fp) < 1)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Attempt to read 16 byte header failed for\n%s.", pszFilename);
CPL_IGNORE_RET_VAL(VSIFCloseL(fp));
return nullptr;
}
if (!STARTS_WITH_CI(szHeader, "EHFA_HEADER_TAG"))
{
CPLError(CE_Failure, CPLE_AppDefined,
"File %s is not an Imagine HFA file ... header wrong.",
pszFilename);
CPL_IGNORE_RET_VAL(VSIFCloseL(fp));
return nullptr;
}
// Create the HFAInfo_t.
HFAInfo_t *psInfo =
static_cast<HFAInfo_t *>(CPLCalloc(sizeof(HFAInfo_t), 1));
psInfo->pszFilename = CPLStrdup(CPLGetFilename(pszFilename));
psInfo->pszPath = CPLStrdup(CPLGetPath(pszFilename));
psInfo->fp = fp;
if (EQUAL(pszAccess, "r") || EQUAL(pszAccess, "rb"))
psInfo->eAccess = HFA_ReadOnly;
else
psInfo->eAccess = HFA_Update;
psInfo->bTreeDirty = false;
// Where is the header?
GUInt32 nHeaderPos = 0;
bool bRet = VSIFReadL(&nHeaderPos, sizeof(GInt32), 1, fp) > 0;
HFAStandard(4, &nHeaderPos);
// Read the header.
bRet &= VSIFSeekL(fp, nHeaderPos, SEEK_SET) >= 0;
bRet &= VSIFReadL(&(psInfo->nVersion), sizeof(GInt32), 1, fp) > 0;
HFAStandard(4, &(psInfo->nVersion));
bRet &= VSIFReadL(szHeader, 4, 1, fp) > 0; // Skip freeList.
bRet &= VSIFReadL(&(psInfo->nRootPos), sizeof(GInt32), 1, fp) > 0;
HFAStandard(4, &(psInfo->nRootPos));
bRet &= VSIFReadL(&(psInfo->nEntryHeaderLength), sizeof(GInt16), 1, fp) > 0;
HFAStandard(2, &(psInfo->nEntryHeaderLength));
bRet &= VSIFReadL(&(psInfo->nDictionaryPos), sizeof(GInt32), 1, fp) > 0;
HFAStandard(4, &(psInfo->nDictionaryPos));
// Collect file size.
bRet &= VSIFSeekL(fp, 0, SEEK_END) >= 0;
if (!bRet)
{
CPL_IGNORE_RET_VAL(VSIFCloseL(fp));
CPLFree(psInfo->pszFilename);
CPLFree(psInfo->pszPath);
CPLFree(psInfo);
return nullptr;
}
psInfo->nEndOfFile = static_cast<GUInt32>(VSIFTellL(fp));
// Instantiate the root entry.
psInfo->poRoot = HFAEntry::New(psInfo, psInfo->nRootPos, nullptr, nullptr);
if (psInfo->poRoot == nullptr)
{
CPL_IGNORE_RET_VAL(VSIFCloseL(fp));
CPLFree(psInfo->pszFilename);
CPLFree(psInfo->pszPath);
CPLFree(psInfo);
return nullptr;
}
// Read the dictionary.
psInfo->pszDictionary = HFAGetDictionary(psInfo);
psInfo->poDictionary = new HFADictionary(psInfo->pszDictionary);
// Collect band definitions.
HFAParseBandInfo(psInfo);
return psInfo;
}
/************************************************************************/
/* HFACreateDependent() */
/* */
/* Create a .rrd file for the named file if it does not exist, */
/* or return the existing dependent if it already exists. */
/************************************************************************/
HFAInfo_t *HFACreateDependent(HFAInfo_t *psBase)
{
if (psBase->psDependent != nullptr)
return psBase->psDependent;
// Create desired RRD filename.
const CPLString oBasename = CPLGetBasename(psBase->pszFilename);
const CPLString oRRDFilename =
CPLFormFilename(psBase->pszPath, oBasename, "rrd");
// Does this file already exist? If so, re-use it.
VSILFILE *fp = VSIFOpenL(oRRDFilename, "rb");
if (fp != nullptr)
{
CPL_IGNORE_RET_VAL(VSIFCloseL(fp));
psBase->psDependent = HFAOpen(oRRDFilename, "rb");
// FIXME? this is not going to be reused but recreated...
}
// Otherwise create it now.
HFAInfo_t *psDep = HFACreateLL(oRRDFilename);
psBase->psDependent = psDep;
if (psDep == nullptr)
return nullptr;
/* -------------------------------------------------------------------- */
/* Add the DependentFile node with the pointer back to the */
/* parent. When working from an .aux file we really want the */
/* .rrd to point back to the original file, not the .aux file. */
/* -------------------------------------------------------------------- */
HFAEntry *poEntry = psBase->poRoot->GetNamedChild("DependentFile");
const char *pszDependentFile = nullptr;
if (poEntry != nullptr)
pszDependentFile = poEntry->GetStringField("dependent.string");
if (pszDependentFile == nullptr)
pszDependentFile = psBase->pszFilename;
HFAEntry *poDF = HFAEntry::New(psDep, "DependentFile", "Eimg_DependentFile",
psDep->poRoot);
poDF->MakeData(static_cast<int>(strlen(pszDependentFile) + 50));
poDF->SetPosition();
poDF->SetStringField("dependent.string", pszDependentFile);
return psDep;
}
/************************************************************************/
/* HFAGetDependent() */
/************************************************************************/
HFAInfo_t *HFAGetDependent(HFAInfo_t *psBase, const char *pszFilename)
{
if (EQUAL(pszFilename, psBase->pszFilename))
return psBase;
if (psBase->psDependent != nullptr)
{
if (EQUAL(pszFilename, psBase->psDependent->pszFilename))
return psBase->psDependent;
else
return nullptr;
}
// Try to open the dependent file.
const char *pszMode = psBase->eAccess == HFA_Update ? "r+b" : "rb";
char *pszDependent =
CPLStrdup(CPLFormFilename(psBase->pszPath, pszFilename, nullptr));
VSILFILE *fp = VSIFOpenL(pszDependent, pszMode);
if (fp != nullptr)
{
CPL_IGNORE_RET_VAL(VSIFCloseL(fp));
psBase->psDependent = HFAOpen(pszDependent, pszMode);
}
CPLFree(pszDependent);
return psBase->psDependent;
}
/************************************************************************/
/* HFAParseBandInfo() */
/* */
/* This is used by HFAOpen() and HFACreate() to initialize the */
/* band structures. */
/************************************************************************/
CPLErr HFAParseBandInfo(HFAInfo_t *psInfo)
{
// Find the first band node.
psInfo->nBands = 0;
HFAEntry *poNode = psInfo->poRoot->GetChild();
while (poNode != nullptr)
{
if (EQUAL(poNode->GetType(), "Eimg_Layer") &&
poNode->GetIntField("width") > 0 &&
poNode->GetIntField("height") > 0)
{
if (psInfo->nBands == 0)
{
psInfo->nXSize = poNode->GetIntField("width");
psInfo->nYSize = poNode->GetIntField("height");
}
else if (poNode->GetIntField("width") != psInfo->nXSize ||
poNode->GetIntField("height") != psInfo->nYSize)
{
return CE_Failure;
}
psInfo->papoBand = static_cast<HFABand **>(CPLRealloc(
psInfo->papoBand, sizeof(HFABand *) * (psInfo->nBands + 1)));
psInfo->papoBand[psInfo->nBands] = new HFABand(psInfo, poNode);
if (psInfo->papoBand[psInfo->nBands]->nWidth == 0)
{
delete psInfo->papoBand[psInfo->nBands];
return CE_Failure;
}
psInfo->nBands++;
}
poNode = poNode->GetNext();
}
return CE_None;
}
/************************************************************************/
/* HFAClose() */
/************************************************************************/
int HFAClose(HFAHandle hHFA)
{
if (hHFA->eAccess == HFA_Update &&
(hHFA->bTreeDirty || (hHFA->poDictionary != nullptr &&
hHFA->poDictionary->bDictionaryTextDirty)))
HFAFlush(hHFA);
int nRet = 0;
if (hHFA->psDependent != nullptr)
{
if (HFAClose(hHFA->psDependent) != 0)
nRet = -1;
}
delete hHFA->poRoot;
if (VSIFCloseL(hHFA->fp) != 0)
nRet = -1;
if (hHFA->poDictionary != nullptr)
delete hHFA->poDictionary;
CPLFree(hHFA->pszDictionary);
CPLFree(hHFA->pszFilename);
CPLFree(hHFA->pszIGEFilename);
CPLFree(hHFA->pszPath);
for (int i = 0; i < hHFA->nBands; i++)
{
delete hHFA->papoBand[i];
}
CPLFree(hHFA->papoBand);
if (hHFA->pProParameters != nullptr)
{
Eprj_ProParameters *psProParams =
(Eprj_ProParameters *)hHFA->pProParameters;
CPLFree(psProParams->proExeName);
CPLFree(psProParams->proName);
CPLFree(psProParams->proSpheroid.sphereName);
CPLFree(psProParams);
}
if (hHFA->pDatum != nullptr)
{
CPLFree(((Eprj_Datum *)hHFA->pDatum)->datumname);
CPLFree(((Eprj_Datum *)hHFA->pDatum)->gridname);
CPLFree(hHFA->pDatum);
}
if (hHFA->pMapInfo != nullptr)
{
CPLFree(((Eprj_MapInfo *)hHFA->pMapInfo)->proName);
CPLFree(((Eprj_MapInfo *)hHFA->pMapInfo)->units);
CPLFree(hHFA->pMapInfo);
}
CPLFree(hHFA);
return nRet;
}
/************************************************************************/
/* HFARemove() */
/* Used from HFADelete() function. */
/************************************************************************/
static CPLErr HFARemove(const char *pszFilename)
{
VSIStatBufL sStat;
if (VSIStatL(pszFilename, &sStat) == 0 && VSI_ISREG(sStat.st_mode))
{
if (VSIUnlink(pszFilename) == 0)
return CE_None;
else
{
CPLError(CE_Failure, CPLE_AppDefined,
"Attempt to unlink %s failed.", pszFilename);
return CE_Failure;
}
}
CPLError(CE_Failure, CPLE_AppDefined, "Unable to delete %s, not a file.",
pszFilename);
return CE_Failure;
}
/************************************************************************/
/* HFADelete() */
/************************************************************************/
CPLErr HFADelete(const char *pszFilename)
{
HFAInfo_t *psInfo = HFAOpen(pszFilename, "rb");
HFAEntry *poDMS = nullptr;
HFAEntry *poLayer = nullptr;
HFAEntry *poNode = nullptr;
if (psInfo != nullptr)
{
poNode = psInfo->poRoot->GetChild();
while ((poNode != nullptr) && (poLayer == nullptr))
{
if (EQUAL(poNode->GetType(), "Eimg_Layer"))
{
poLayer = poNode;
}
poNode = poNode->GetNext();
}
if (poLayer != nullptr)
poDMS = poLayer->GetNamedChild("ExternalRasterDMS");
if (poDMS)
{
const char *pszRawFilename =
poDMS->GetStringField("fileName.string");
if (pszRawFilename != nullptr)
HFARemove(
CPLFormFilename(psInfo->pszPath, pszRawFilename, nullptr));
}
CPL_IGNORE_RET_VAL(HFAClose(psInfo));
}
return HFARemove(pszFilename);
}
/************************************************************************/
/* HFAGetRasterInfo() */
/************************************************************************/
CPLErr HFAGetRasterInfo(HFAHandle hHFA, int *pnXSize, int *pnYSize,
int *pnBands)
{
if (pnXSize != nullptr)
*pnXSize = hHFA->nXSize;
if (pnYSize != nullptr)
*pnYSize = hHFA->nYSize;
if (pnBands != nullptr)
*pnBands = hHFA->nBands;
return CE_None;
}
/************************************************************************/
/* HFAGetBandInfo() */
/************************************************************************/
CPLErr HFAGetBandInfo(HFAHandle hHFA, int nBand, EPTType *peDataType,
int *pnBlockXSize, int *pnBlockYSize,
int *pnCompressionType)
{
if (nBand < 0 || nBand > hHFA->nBands)
{
CPLAssert(false);
return CE_Failure;
}
HFABand *poBand = hHFA->papoBand[nBand - 1];
if (peDataType != nullptr)
*peDataType = poBand->eDataType;
if (pnBlockXSize != nullptr)
*pnBlockXSize = poBand->nBlockXSize;
if (pnBlockYSize != nullptr)
*pnBlockYSize = poBand->nBlockYSize;
// Get compression code from RasterDMS.
if (pnCompressionType != nullptr)
{
*pnCompressionType = 0;
HFAEntry *poDMS = poBand->poNode->GetNamedChild("RasterDMS");
if (poDMS != nullptr)
*pnCompressionType = poDMS->GetIntField("compressionType");
}
return CE_None;
}
/************************************************************************/
/* HFAGetBandNoData() */
/* */
/* returns TRUE if value is set, otherwise FALSE. */
/************************************************************************/
int HFAGetBandNoData(HFAHandle hHFA, int nBand, double *pdfNoData)
{
if (nBand < 0 || nBand > hHFA->nBands)
{
CPLAssert(false);
return CE_Failure;
}
HFABand *poBand = hHFA->papoBand[nBand - 1];
if (!poBand->bNoDataSet && poBand->nOverviews > 0)
{
poBand = poBand->papoOverviews[0];
if (poBand == nullptr)
return FALSE;
}
*pdfNoData = poBand->dfNoData;
return poBand->bNoDataSet;
}
/************************************************************************/
/* HFASetBandNoData() */
/* */
/* attempts to set a no-data value on the given band */
/************************************************************************/
CPLErr HFASetBandNoData(HFAHandle hHFA, int nBand, double dfValue)
{
if (nBand < 0 || nBand > hHFA->nBands)
{
CPLAssert(false);
return CE_Failure;
}
HFABand *poBand = hHFA->papoBand[nBand - 1];
return poBand->SetNoDataValue(dfValue);
}
/************************************************************************/
/* HFAGetOverviewCount() */
/************************************************************************/
int HFAGetOverviewCount(HFAHandle hHFA, int nBand)
{
if (nBand < 0 || nBand > hHFA->nBands)
{
CPLAssert(false);
return CE_Failure;
}
HFABand *poBand = hHFA->papoBand[nBand - 1];
poBand->LoadOverviews();
return poBand->nOverviews;
}
/************************************************************************/
/* HFAGetOverviewInfo() */
/************************************************************************/
CPLErr HFAGetOverviewInfo(HFAHandle hHFA, int nBand, int iOverview,
int *pnXSize, int *pnYSize, int *pnBlockXSize,
int *pnBlockYSize, EPTType *peHFADataType)
{
if (nBand < 0 || nBand > hHFA->nBands)
{
CPLAssert(false);
return CE_Failure;
}
HFABand *poBand = hHFA->papoBand[nBand - 1];
poBand->LoadOverviews();
if (iOverview < 0 || iOverview >= poBand->nOverviews)
{
CPLAssert(false);
return CE_Failure;
}
poBand = poBand->papoOverviews[iOverview];
if (poBand == nullptr)
{
return CE_Failure;
}
if (pnXSize != nullptr)
*pnXSize = poBand->nWidth;
if (pnYSize != nullptr)
*pnYSize = poBand->nHeight;
if (pnBlockXSize != nullptr)
*pnBlockXSize = poBand->nBlockXSize;
if (pnBlockYSize != nullptr)
*pnBlockYSize = poBand->nBlockYSize;
if (peHFADataType != nullptr)
*peHFADataType = poBand->eDataType;
return CE_None;
}
/************************************************************************/
/* HFAGetRasterBlock() */
/************************************************************************/
CPLErr HFAGetRasterBlock(HFAHandle hHFA, int nBand, int nXBlock, int nYBlock,
void *pData)
{
return HFAGetRasterBlockEx(hHFA, nBand, nXBlock, nYBlock, pData, -1);
}
/************************************************************************/
/* HFAGetRasterBlockEx() */
/************************************************************************/
CPLErr HFAGetRasterBlockEx(HFAHandle hHFA, int nBand, int nXBlock, int nYBlock,
void *pData, int nDataSize)
{
if (nBand < 1 || nBand > hHFA->nBands)
return CE_Failure;
return hHFA->papoBand[nBand - 1]->GetRasterBlock(nXBlock, nYBlock, pData,
nDataSize);
}
/************************************************************************/
/* HFAGetOverviewRasterBlock() */
/************************************************************************/
CPLErr HFAGetOverviewRasterBlock(HFAHandle hHFA, int nBand, int iOverview,
int nXBlock, int nYBlock, void *pData)
{
return HFAGetOverviewRasterBlockEx(hHFA, nBand, iOverview, nXBlock, nYBlock,
pData, -1);
}
/************************************************************************/
/* HFAGetOverviewRasterBlockEx() */
/************************************************************************/
CPLErr HFAGetOverviewRasterBlockEx(HFAHandle hHFA, int nBand, int iOverview,
int nXBlock, int nYBlock, void *pData,
int nDataSize)
{
if (nBand < 1 || nBand > hHFA->nBands)
return CE_Failure;
if (iOverview < 0 || iOverview >= hHFA->papoBand[nBand - 1]->nOverviews)
return CE_Failure;
return hHFA->papoBand[nBand - 1]->papoOverviews[iOverview]->GetRasterBlock(
nXBlock, nYBlock, pData, nDataSize);
}
/************************************************************************/
/* HFASetRasterBlock() */
/************************************************************************/
CPLErr HFASetRasterBlock(HFAHandle hHFA, int nBand, int nXBlock, int nYBlock,
void *pData)
{
if (nBand < 1 || nBand > hHFA->nBands)
return CE_Failure;
return hHFA->papoBand[nBand - 1]->SetRasterBlock(nXBlock, nYBlock, pData);
}
/************************************************************************/
/* HFASetRasterBlock() */
/************************************************************************/
CPLErr HFASetOverviewRasterBlock(HFAHandle hHFA, int nBand, int iOverview,
int nXBlock, int nYBlock, void *pData)
{
if (nBand < 1 || nBand > hHFA->nBands)
return CE_Failure;
if (iOverview < 0 || iOverview >= hHFA->papoBand[nBand - 1]->nOverviews)
return CE_Failure;
return hHFA->papoBand[nBand - 1]->papoOverviews[iOverview]->SetRasterBlock(
nXBlock, nYBlock, pData);
}
/************************************************************************/
/* HFAGetBandName() */
/************************************************************************/
const char *HFAGetBandName(HFAHandle hHFA, int nBand)
{
if (nBand < 1 || nBand > hHFA->nBands)
return "";
return hHFA->papoBand[nBand - 1]->GetBandName();
}
/************************************************************************/
/* HFASetBandName() */
/************************************************************************/
void HFASetBandName(HFAHandle hHFA, int nBand, const char *pszName)
{
if (nBand < 1 || nBand > hHFA->nBands)
return;
hHFA->papoBand[nBand - 1]->SetBandName(pszName);
}
/************************************************************************/
/* HFAGetDataTypeBits() */
/************************************************************************/
int HFAGetDataTypeBits(EPTType eDataType)
{
switch (eDataType)
{
case EPT_u1:
return 1;
case EPT_u2:
return 2;
case EPT_u4:
return 4;
case EPT_u8:
case EPT_s8:
return 8;
case EPT_u16:
case EPT_s16:
return 16;
case EPT_u32:
case EPT_s32:
case EPT_f32:
return 32;
case EPT_f64:
case EPT_c64:
return 64;
case EPT_c128:
return 128;
}
CPLAssert(false);
return 1;
}
/************************************************************************/
/* HFAGetDataTypeName() */
/************************************************************************/
const char *HFAGetDataTypeName(EPTType eDataType)
{
switch (eDataType)
{
case EPT_u1:
return "u1";
case EPT_u2:
return "u2";
case EPT_u4:
return "u4";
case EPT_u8:
return "u8";
case EPT_s8:
return "s8";
case EPT_u16:
return "u16";
case EPT_s16:
return "s16";
case EPT_u32:
return "u32";
case EPT_s32:
return "s32";
case EPT_f32:
return "f32";
case EPT_f64:
return "f64";
case EPT_c64:
return "c64";
case EPT_c128:
return "c128";
default:
CPLAssert(false);
return "unknown";
}
}
/************************************************************************/
/* HFAGetMapInfo() */
/************************************************************************/
const Eprj_MapInfo *HFAGetMapInfo(HFAHandle hHFA)
{
if (hHFA->nBands < 1)
return nullptr;
// Do we already have it?
if (hHFA->pMapInfo != nullptr)
return (Eprj_MapInfo *)hHFA->pMapInfo;
// Get the HFA node. If we don't find it under the usual name
// we search for any node of the right type (#3338).
HFAEntry *poMIEntry = hHFA->papoBand[0]->poNode->GetNamedChild("Map_Info");
if (poMIEntry == nullptr)
{
for (HFAEntry *poChild = hHFA->papoBand[0]->poNode->GetChild();
poChild != nullptr && poMIEntry == nullptr;
poChild = poChild->GetNext())
{
if (EQUAL(poChild->GetType(), "Eprj_MapInfo"))
poMIEntry = poChild;
}
}
if (poMIEntry == nullptr)
{
return nullptr;
}
// Allocate the structure.
Eprj_MapInfo *psMapInfo =
static_cast<Eprj_MapInfo *>(CPLCalloc(sizeof(Eprj_MapInfo), 1));
// Fetch the fields.
psMapInfo->proName = CPLStrdup(poMIEntry->GetStringField("proName"));
psMapInfo->upperLeftCenter.x =
poMIEntry->GetDoubleField("upperLeftCenter.x");
psMapInfo->upperLeftCenter.y =
poMIEntry->GetDoubleField("upperLeftCenter.y");
psMapInfo->lowerRightCenter.x =
poMIEntry->GetDoubleField("lowerRightCenter.x");
psMapInfo->lowerRightCenter.y =
poMIEntry->GetDoubleField("lowerRightCenter.y");
CPLErr eErr = CE_None;
psMapInfo->pixelSize.width =
poMIEntry->GetDoubleField("pixelSize.width", &eErr);
psMapInfo->pixelSize.height =
poMIEntry->GetDoubleField("pixelSize.height", &eErr);
// The following is basically a hack to get files with
// non-standard MapInfo's that misname the pixelSize fields. (#3338)
if (eErr != CE_None)
{
psMapInfo->pixelSize.width = poMIEntry->GetDoubleField("pixelSize.x");