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lcpdataset.cpp
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/******************************************************************************
*
* Project: LCP Driver
* Purpose: FARSITE v.4 Landscape file (.lcp) reader for GDAL
* Author: Chris Toney
*
******************************************************************************
* Copyright (c) 2008, Chris Toney
* Copyright (c) 2008-2011, Even Rouault <even dot rouault at spatialys.com>
* Copyright (c) 2013, Kyle Shannon <kyle at pobox dot 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.
****************************************************************************/
#include "cpl_port.h"
#include "cpl_string.h"
#include "gdal_frmts.h"
#include "ogr_spatialref.h"
#include "rawdataset.h"
#include <algorithm>
#include <limits>
constexpr size_t LCP_HEADER_SIZE = 7316;
constexpr int LCP_MAX_BANDS = 10;
constexpr int LCP_MAX_PATH = 256;
constexpr int LCP_MAX_DESC = 512;
constexpr int LCP_MAX_CLASSES = 100;
/************************************************************************/
/* ==================================================================== */
/* LCPDataset */
/* ==================================================================== */
/************************************************************************/
class LCPDataset final : public RawDataset
{
VSILFILE *fpImage; // image data file.
char pachHeader[LCP_HEADER_SIZE];
CPLString osPrjFilename{};
OGRSpatialReference m_oSRS{};
static CPLErr ClassifyBandData(GDALRasterBand *poBand, GInt32 &nNumClasses,
GInt32 *panClasses);
CPL_DISALLOW_COPY_ASSIGN(LCPDataset)
CPLErr Close() override;
public:
LCPDataset();
~LCPDataset() override;
char **GetFileList(void) override;
CPLErr GetGeoTransform(double *) override;
static int Identify(GDALOpenInfo *);
static GDALDataset *Open(GDALOpenInfo *);
static GDALDataset *CreateCopy(const char *pszFilename,
GDALDataset *poSrcDS, int bStrict,
char **papszOptions,
GDALProgressFunc pfnProgress,
void *pProgressData);
const OGRSpatialReference *GetSpatialRef() const override
{
return &m_oSRS;
}
};
/************************************************************************/
/* LCPDataset() */
/************************************************************************/
LCPDataset::LCPDataset() : fpImage(nullptr)
{
memset(pachHeader, 0, sizeof(pachHeader));
}
/************************************************************************/
/* ~LCPDataset() */
/************************************************************************/
LCPDataset::~LCPDataset()
{
LCPDataset::Close();
}
/************************************************************************/
/* Close() */
/************************************************************************/
CPLErr LCPDataset::Close()
{
CPLErr eErr = CE_None;
if (nOpenFlags != OPEN_FLAGS_CLOSED)
{
if (LCPDataset::FlushCache(true) != CE_None)
eErr = CE_Failure;
if (fpImage)
{
if (VSIFCloseL(fpImage) != 0)
{
CPLError(CE_Failure, CPLE_FileIO, "I/O error");
eErr = CE_Failure;
}
}
if (GDALPamDataset::Close() != CE_None)
eErr = CE_Failure;
}
return eErr;
}
/************************************************************************/
/* GetGeoTransform() */
/************************************************************************/
CPLErr LCPDataset::GetGeoTransform(double *padfTransform)
{
double dfEast = 0.0;
double dfWest = 0.0;
double dfNorth = 0.0;
double dfSouth = 0.0;
double dfCellX = 0.0;
double dfCellY = 0.0;
memcpy(&dfEast, pachHeader + 4172, sizeof(double));
memcpy(&dfWest, pachHeader + 4180, sizeof(double));
memcpy(&dfNorth, pachHeader + 4188, sizeof(double));
memcpy(&dfSouth, pachHeader + 4196, sizeof(double));
memcpy(&dfCellX, pachHeader + 4208, sizeof(double));
memcpy(&dfCellY, pachHeader + 4216, sizeof(double));
CPL_LSBPTR64(&dfEast);
CPL_LSBPTR64(&dfWest);
CPL_LSBPTR64(&dfNorth);
CPL_LSBPTR64(&dfSouth);
CPL_LSBPTR64(&dfCellX);
CPL_LSBPTR64(&dfCellY);
padfTransform[0] = dfWest;
padfTransform[3] = dfNorth;
padfTransform[1] = dfCellX;
padfTransform[2] = 0.0;
padfTransform[4] = 0.0;
padfTransform[5] = -1 * dfCellY;
return CE_None;
}
/************************************************************************/
/* Identify() */
/************************************************************************/
int LCPDataset::Identify(GDALOpenInfo *poOpenInfo)
{
/* -------------------------------------------------------------------- */
/* Verify that this is a FARSITE v.4 LCP file */
/* -------------------------------------------------------------------- */
if (poOpenInfo->nHeaderBytes < 50)
return FALSE;
/* check if first three fields have valid data */
if ((CPL_LSBSINT32PTR(poOpenInfo->pabyHeader) != 20 &&
CPL_LSBSINT32PTR(poOpenInfo->pabyHeader) != 21) ||
(CPL_LSBSINT32PTR(poOpenInfo->pabyHeader + 4) != 20 &&
CPL_LSBSINT32PTR(poOpenInfo->pabyHeader + 4) != 21) ||
(CPL_LSBSINT32PTR(poOpenInfo->pabyHeader + 8) < -90 ||
CPL_LSBSINT32PTR(poOpenInfo->pabyHeader + 8) > 90))
{
return FALSE;
}
/* -------------------------------------------------------------------- */
/* Check file extension */
/* -------------------------------------------------------------------- */
#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
const char *pszFileExtension = CPLGetExtension(poOpenInfo->pszFilename);
if (!EQUAL(pszFileExtension, "lcp"))
{
return FALSE;
}
#endif
return TRUE;
}
/************************************************************************/
/* GetFileList() */
/************************************************************************/
char **LCPDataset::GetFileList()
{
char **papszFileList = GDALPamDataset::GetFileList();
if (!m_oSRS.IsEmpty())
{
papszFileList = CSLAddString(papszFileList, osPrjFilename);
}
return papszFileList;
}
/************************************************************************/
/* Open() */
/************************************************************************/
GDALDataset *LCPDataset::Open(GDALOpenInfo *poOpenInfo)
{
/* -------------------------------------------------------------------- */
/* Verify that this is a FARSITE LCP file */
/* -------------------------------------------------------------------- */
if (!Identify(poOpenInfo) || poOpenInfo->fpL == nullptr)
return nullptr;
/* -------------------------------------------------------------------- */
/* Confirm the requested access is supported. */
/* -------------------------------------------------------------------- */
if (poOpenInfo->eAccess == GA_Update)
{
CPLError(CE_Failure, CPLE_NotSupported,
"The LCP driver does not support update access to existing"
" datasets.");
return nullptr;
}
/* -------------------------------------------------------------------- */
/* Create a corresponding GDALDataset. */
/* -------------------------------------------------------------------- */
auto poDS = std::make_unique<LCPDataset>();
std::swap(poDS->fpImage, poOpenInfo->fpL);
/* -------------------------------------------------------------------- */
/* Read the header and extract some information. */
/* -------------------------------------------------------------------- */
if (VSIFSeekL(poDS->fpImage, 0, SEEK_SET) < 0 ||
VSIFReadL(poDS->pachHeader, 1, LCP_HEADER_SIZE, poDS->fpImage) !=
LCP_HEADER_SIZE)
{
CPLError(CE_Failure, CPLE_FileIO, "File too short");
return nullptr;
}
const int nWidth = CPL_LSBSINT32PTR(poDS->pachHeader + 4164);
const int nHeight = CPL_LSBSINT32PTR(poDS->pachHeader + 4168);
poDS->nRasterXSize = nWidth;
poDS->nRasterYSize = nHeight;
if (!GDALCheckDatasetDimensions(poDS->nRasterXSize, poDS->nRasterYSize))
{
return nullptr;
}
// Crown fuels = canopy height, canopy base height, canopy bulk density.
// 21 = have them, 20 = do not have them
const bool bHaveCrownFuels =
CPL_TO_BOOL(CPL_LSBSINT32PTR(poDS->pachHeader + 0) - 20);
// Ground fuels = duff loading, coarse woody.
const bool bHaveGroundFuels =
CPL_TO_BOOL(CPL_LSBSINT32PTR(poDS->pachHeader + 4) - 20);
int nBands = 0;
if (bHaveCrownFuels)
{
if (bHaveGroundFuels)
nBands = 10;
else
nBands = 8;
}
else
{
if (bHaveGroundFuels)
nBands = 7;
else
nBands = 5;
}
// Add dataset-level metadata.
int nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 8);
char szTemp[32] = {'\0'};
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poDS->SetMetadataItem("LATITUDE", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 4204);
if (nTemp == 0)
poDS->SetMetadataItem("LINEAR_UNIT", "Meters");
if (nTemp == 1)
poDS->SetMetadataItem("LINEAR_UNIT", "Feet");
poDS->pachHeader[LCP_HEADER_SIZE - 1] = '\0';
poDS->SetMetadataItem("DESCRIPTION", poDS->pachHeader + 6804);
/* -------------------------------------------------------------------- */
/* Create band information objects. */
/* -------------------------------------------------------------------- */
const int iPixelSize = nBands * 2;
if (nWidth > INT_MAX / iPixelSize)
{
CPLError(CE_Failure, CPLE_AppDefined, "Int overflow occurred");
return nullptr;
}
for (int iBand = 1; iBand <= nBands; iBand++)
{
auto poBand =
RawRasterBand::Create(poDS.get(), iBand, poDS->fpImage,
LCP_HEADER_SIZE + ((iBand - 1) * 2),
iPixelSize, iPixelSize * nWidth, GDT_Int16,
RawRasterBand::ByteOrder::ORDER_LITTLE_ENDIAN,
RawRasterBand::OwnFP::NO);
if (!poBand)
return nullptr;
switch (iBand)
{
case 1:
poBand->SetDescription("Elevation");
nTemp = CPL_LSBUINT16PTR(poDS->pachHeader + 4224);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("ELEVATION_UNIT", szTemp);
if (nTemp == 0)
poBand->SetMetadataItem("ELEVATION_UNIT_NAME", "Meters");
if (nTemp == 1)
poBand->SetMetadataItem("ELEVATION_UNIT_NAME", "Feet");
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 44);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("ELEVATION_MIN", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 48);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("ELEVATION_MAX", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 52);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("ELEVATION_NUM_CLASSES", szTemp);
*(poDS->pachHeader + 4244 + 255) = '\0';
poBand->SetMetadataItem("ELEVATION_FILE",
poDS->pachHeader + 4244);
break;
case 2:
poBand->SetDescription("Slope");
nTemp = CPL_LSBUINT16PTR(poDS->pachHeader + 4226);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("SLOPE_UNIT", szTemp);
if (nTemp == 0)
poBand->SetMetadataItem("SLOPE_UNIT_NAME", "Degrees");
if (nTemp == 1)
poBand->SetMetadataItem("SLOPE_UNIT_NAME", "Percent");
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 456);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("SLOPE_MIN", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 460);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("SLOPE_MAX", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 464);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("SLOPE_NUM_CLASSES", szTemp);
*(poDS->pachHeader + 4500 + 255) = '\0';
poBand->SetMetadataItem("SLOPE_FILE", poDS->pachHeader + 4500);
break;
case 3:
poBand->SetDescription("Aspect");
nTemp = CPL_LSBUINT16PTR(poDS->pachHeader + 4228);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("ASPECT_UNIT", szTemp);
if (nTemp == 0)
poBand->SetMetadataItem("ASPECT_UNIT_NAME",
"Grass categories");
if (nTemp == 1)
poBand->SetMetadataItem("ASPECT_UNIT_NAME",
"Grass degrees");
if (nTemp == 2)
poBand->SetMetadataItem("ASPECT_UNIT_NAME",
"Azimuth degrees");
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 868);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("ASPECT_MIN", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 872);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("ASPECT_MAX", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 876);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("ASPECT_NUM_CLASSES", szTemp);
*(poDS->pachHeader + 4756 + 255) = '\0';
poBand->SetMetadataItem("ASPECT_FILE", poDS->pachHeader + 4756);
break;
case 4:
{
poBand->SetDescription("Fuel models");
nTemp = CPL_LSBUINT16PTR(poDS->pachHeader + 4230);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("FUEL_MODEL_OPTION", szTemp);
if (nTemp == 0)
poBand->SetMetadataItem(
"FUEL_MODEL_OPTION_DESC",
"no custom models AND no conversion file needed");
if (nTemp == 1)
poBand->SetMetadataItem(
"FUEL_MODEL_OPTION_DESC",
"custom models BUT no conversion file needed");
if (nTemp == 2)
poBand->SetMetadataItem(
"FUEL_MODEL_OPTION_DESC",
"no custom models BUT conversion file needed");
if (nTemp == 3)
poBand->SetMetadataItem(
"FUEL_MODEL_OPTION_DESC",
"custom models AND conversion file needed");
const int nMinFM = CPL_LSBSINT32PTR(poDS->pachHeader + 1280);
snprintf(szTemp, sizeof(szTemp), "%d", nMinFM);
poBand->SetMetadataItem("FUEL_MODEL_MIN", szTemp);
const int nMaxFM = CPL_LSBSINT32PTR(poDS->pachHeader + 1284);
snprintf(szTemp, sizeof(szTemp), "%d", nMaxFM);
poBand->SetMetadataItem("FUEL_MODEL_MAX", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 1288);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("FUEL_MODEL_NUM_CLASSES", szTemp);
std::string osValues;
if (nTemp > 0 && nTemp <= 100)
{
for (int i = 0; i <= nTemp; i++)
{
const int nTemp2 = CPL_LSBSINT32PTR(poDS->pachHeader +
(1292 + (i * 4)));
if (nTemp2 >= nMinFM && nTemp2 <= nMaxFM)
{
snprintf(szTemp, sizeof(szTemp), "%d", nTemp2);
if (!osValues.empty())
osValues += ',';
osValues += szTemp;
}
}
}
poBand->SetMetadataItem("FUEL_MODEL_VALUES", osValues.c_str());
*(poDS->pachHeader + 5012 + 255) = '\0';
poBand->SetMetadataItem("FUEL_MODEL_FILE",
poDS->pachHeader + 5012);
break;
}
case 5:
poBand->SetDescription("Canopy cover");
nTemp = CPL_LSBUINT16PTR(poDS->pachHeader + 4232);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CANOPY_COV_UNIT", szTemp);
if (nTemp == 0)
poBand->SetMetadataItem("CANOPY_COV_UNIT_NAME",
"Categories (0-4)");
if (nTemp == 1)
poBand->SetMetadataItem("CANOPY_COV_UNIT_NAME", "Percent");
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 1692);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CANOPY_COV_MIN", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 1696);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CANOPY_COV_MAX", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 1700);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CANOPY_COV_NUM_CLASSES", szTemp);
*(poDS->pachHeader + 5268 + 255) = '\0';
poBand->SetMetadataItem("CANOPY_COV_FILE",
poDS->pachHeader + 5268);
break;
case 6:
if (bHaveCrownFuels)
{
poBand->SetDescription("Canopy height");
nTemp = CPL_LSBUINT16PTR(poDS->pachHeader + 4234);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CANOPY_HT_UNIT", szTemp);
if (nTemp == 1)
poBand->SetMetadataItem("CANOPY_HT_UNIT_NAME",
"Meters");
if (nTemp == 2)
poBand->SetMetadataItem("CANOPY_HT_UNIT_NAME", "Feet");
if (nTemp == 3)
poBand->SetMetadataItem("CANOPY_HT_UNIT_NAME",
"Meters x 10");
if (nTemp == 4)
poBand->SetMetadataItem("CANOPY_HT_UNIT_NAME",
"Feet x 10");
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 2104);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CANOPY_HT_MIN", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 2108);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CANOPY_HT_MAX", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 2112);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CANOPY_HT_NUM_CLASSES", szTemp);
*(poDS->pachHeader + 5524 + 255) = '\0';
poBand->SetMetadataItem("CANOPY_HT_FILE",
poDS->pachHeader + 5524);
}
else
{
poBand->SetDescription("Duff");
nTemp = CPL_LSBUINT16PTR(poDS->pachHeader + 4240);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("DUFF_UNIT", szTemp);
if (nTemp == 1)
poBand->SetMetadataItem("DUFF_UNIT_NAME", "Mg/ha");
if (nTemp == 2)
poBand->SetMetadataItem("DUFF_UNIT_NAME", "t/ac");
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 3340);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("DUFF_MIN", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 3344);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("DUFF_MAX", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 3348);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("DUFF_NUM_CLASSES", szTemp);
*(poDS->pachHeader + 6292 + 255) = '\0';
poBand->SetMetadataItem("DUFF_FILE",
poDS->pachHeader + 6292);
}
break;
case 7:
if (bHaveCrownFuels)
{
poBand->SetDescription("Canopy base height");
nTemp = CPL_LSBUINT16PTR(poDS->pachHeader + 4236);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CBH_UNIT", szTemp);
if (nTemp == 1)
poBand->SetMetadataItem("CBH_UNIT_NAME", "Meters");
if (nTemp == 2)
poBand->SetMetadataItem("CBH_UNIT_NAME", "Feet");
if (nTemp == 3)
poBand->SetMetadataItem("CBH_UNIT_NAME", "Meters x 10");
if (nTemp == 4)
poBand->SetMetadataItem("CBH_UNIT_NAME", "Feet x 10");
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 2516);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CBH_MIN", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 2520);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CBH_MAX", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 2524);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CBH_NUM_CLASSES", szTemp);
*(poDS->pachHeader + 5780 + 255) = '\0';
poBand->SetMetadataItem("CBH_FILE",
poDS->pachHeader + 5780);
}
else
{
poBand->SetDescription("Coarse woody debris");
nTemp = CPL_LSBUINT16PTR(poDS->pachHeader + 4242);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CWD_OPTION", szTemp);
// if ( nTemp == 1 )
// poBand->SetMetadataItem( "CWD_UNIT_DESC", "?" );
// if ( nTemp == 2 )
// poBand->SetMetadataItem( "CWD_UNIT_DESC", "?" );
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 3752);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CWD_MIN", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 3756);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CWD_MAX", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 3760);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CWD_NUM_CLASSES", szTemp);
*(poDS->pachHeader + 6548 + 255) = '\0';
poBand->SetMetadataItem("CWD_FILE",
poDS->pachHeader + 6548);
}
break;
case 8:
poBand->SetDescription("Canopy bulk density");
nTemp = CPL_LSBUINT16PTR(poDS->pachHeader + 4238);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CBD_UNIT", szTemp);
if (nTemp == 1)
poBand->SetMetadataItem("CBD_UNIT_NAME", "kg/m^3");
if (nTemp == 2)
poBand->SetMetadataItem("CBD_UNIT_NAME", "lb/ft^3");
if (nTemp == 3)
poBand->SetMetadataItem("CBD_UNIT_NAME", "kg/m^3 x 100");
if (nTemp == 4)
poBand->SetMetadataItem("CBD_UNIT_NAME", "lb/ft^3 x 1000");
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 2928);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CBD_MIN", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 2932);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CBD_MAX", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 2936);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CBD_NUM_CLASSES", szTemp);
*(poDS->pachHeader + 6036 + 255) = '\0';
poBand->SetMetadataItem("CBD_FILE", poDS->pachHeader + 6036);
break;
case 9:
poBand->SetDescription("Duff");
nTemp = CPL_LSBUINT16PTR(poDS->pachHeader + 4240);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("DUFF_UNIT", szTemp);
if (nTemp == 1)
poBand->SetMetadataItem("DUFF_UNIT_NAME", "Mg/ha");
if (nTemp == 2)
poBand->SetMetadataItem("DUFF_UNIT_NAME", "t/ac");
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 3340);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("DUFF_MIN", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 3344);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("DUFF_MAX", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 3348);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("DUFF_NUM_CLASSES", szTemp);
*(poDS->pachHeader + 6292 + 255) = '\0';
poBand->SetMetadataItem("DUFF_FILE", poDS->pachHeader + 6292);
break;
case 10:
poBand->SetDescription("Coarse woody debris");
nTemp = CPL_LSBUINT16PTR(poDS->pachHeader + 4242);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CWD_OPTION", szTemp);
// if ( nTemp == 1 )
// poBand->SetMetadataItem( "CWD_UNIT_DESC", "?" );
// if ( nTemp == 2 )
// poBand->SetMetadataItem( "CWD_UNIT_DESC", "?" );
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 3752);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CWD_MIN", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 3756);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CWD_MAX", szTemp);
nTemp = CPL_LSBSINT32PTR(poDS->pachHeader + 3760);
snprintf(szTemp, sizeof(szTemp), "%d", nTemp);
poBand->SetMetadataItem("CWD_NUM_CLASSES", szTemp);
*(poDS->pachHeader + 6548 + 255) = '\0';
poBand->SetMetadataItem("CWD_FILE", poDS->pachHeader + 6548);
break;
}
poDS->SetBand(iBand, std::move(poBand));
}
/* -------------------------------------------------------------------- */
/* Try to read projection file. */
/* -------------------------------------------------------------------- */
char *const pszDirname = CPLStrdup(CPLGetPath(poOpenInfo->pszFilename));
char *const pszBasename =
CPLStrdup(CPLGetBasename(poOpenInfo->pszFilename));
poDS->osPrjFilename = CPLFormFilename(pszDirname, pszBasename, "prj");
VSIStatBufL sStatBuf;
int nRet = VSIStatL(poDS->osPrjFilename, &sStatBuf);
if (nRet != 0 && VSIIsCaseSensitiveFS(poDS->osPrjFilename))
{
poDS->osPrjFilename = CPLFormFilename(pszDirname, pszBasename, "PRJ");
nRet = VSIStatL(poDS->osPrjFilename, &sStatBuf);
}
if (nRet == 0)
{
char **papszPrj = CSLLoad(poDS->osPrjFilename);
CPLDebug("LCP", "Loaded SRS from %s", poDS->osPrjFilename.c_str());
poDS->m_oSRS.SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER);
if (poDS->m_oSRS.importFromESRI(papszPrj) != OGRERR_NONE)
{
poDS->m_oSRS.Clear();
}
CSLDestroy(papszPrj);
}
CPLFree(pszDirname);
CPLFree(pszBasename);
/* -------------------------------------------------------------------- */
/* Initialize any PAM information. */
/* -------------------------------------------------------------------- */
poDS->SetDescription(poOpenInfo->pszFilename);
poDS->TryLoadXML();
/* -------------------------------------------------------------------- */
/* Check for external overviews. */
/* -------------------------------------------------------------------- */
poDS->oOvManager.Initialize(poDS.get(), poOpenInfo->pszFilename,
poOpenInfo->GetSiblingFiles());
return poDS.release();
}
/************************************************************************/
/* ClassifyBandData() */
/* Classify a band and store 99 or fewer unique values. If there are */
/* more than 99 unique values, then set pnNumClasses to -1 as a flag */
/* that represents this. These are legacy values in the header, and */
/* while we should never deprecate them, we could possibly not */
/* calculate them by default. */
/************************************************************************/
CPLErr LCPDataset::ClassifyBandData(GDALRasterBand *poBand, GInt32 &nNumClasses,
GInt32 *panClasses)
{
CPLAssert(poBand);
CPLAssert(panClasses);
const int nXSize = poBand->GetXSize();
const int nYSize = poBand->GetYSize();
GInt16 *panValues =
static_cast<GInt16 *>(CPLMalloc(sizeof(GInt16) * nXSize));
constexpr int MIN_VAL = std::numeric_limits<GInt16>::min();
constexpr int MAX_VAL = std::numeric_limits<GInt16>::max();
constexpr int RANGE_VAL = MAX_VAL - MIN_VAL + 1;
GByte *pabyFlags = static_cast<GByte *>(CPLCalloc(1, RANGE_VAL));
/* so that values in [-32768,32767] are mapped to [0,65535] in pabyFlags */
constexpr int OFFSET = -MIN_VAL;
int nFound = 0;
bool bTooMany = false;
CPLErr eErr = CE_None;
for (int iLine = 0; iLine < nYSize; iLine++)
{
eErr = poBand->RasterIO(GF_Read, 0, iLine, nXSize, 1, panValues, nXSize,
1, GDT_Int16, 0, 0, nullptr);
if (eErr != CE_None)
break;
for (int iPixel = 0; iPixel < nXSize; iPixel++)
{
if (panValues[iPixel] == -9999)
{
continue;
}
if (nFound == LCP_MAX_CLASSES)
{
CPLDebug("LCP",
"Found more that %d unique values in "
"band %d. Not 'classifying' the data.",
LCP_MAX_CLASSES - 1, poBand->GetBand());
nFound = -1;
bTooMany = true;
break;
}
if (pabyFlags[panValues[iPixel] + OFFSET] == 0)
{
pabyFlags[panValues[iPixel] + OFFSET] = 1;
nFound++;
}
}
if (bTooMany)
break;
}
if (!bTooMany)
{
// The classes are always padded with a leading 0. This was for aligning
// offsets, or making it a 1-based array instead of 0-based.
panClasses[0] = 0;
for (int j = 0, nIndex = 1; j < RANGE_VAL; j++)
{
if (pabyFlags[j] == 1)
{
panClasses[nIndex++] = j;
}
}
}
nNumClasses = nFound;
CPLFree(pabyFlags);
CPLFree(panValues);
return eErr;
}
/************************************************************************/
/* CreateCopy() */
/************************************************************************/
GDALDataset *LCPDataset::CreateCopy(const char *pszFilename,
GDALDataset *poSrcDS, int bStrict,
char **papszOptions,
GDALProgressFunc pfnProgress,
void *pProgressData)
{
/* -------------------------------------------------------------------- */
/* Verify input options. */
/* -------------------------------------------------------------------- */
const int nBands = poSrcDS->GetRasterCount();
if (nBands != 5 && nBands != 7 && nBands != 8 && nBands != 10)
{
CPLError(CE_Failure, CPLE_NotSupported,
"LCP driver doesn't support %d bands. Must be 5, 7, 8 "
"or 10 bands.",
nBands);
return nullptr;
}
GDALDataType eType = poSrcDS->GetRasterBand(1)->GetRasterDataType();
if (eType != GDT_Int16 && bStrict)
{
CPLError(CE_Failure, CPLE_AppDefined,
"LCP only supports 16-bit signed integer data types.");
return nullptr;
}
else if (eType != GDT_Int16)
{
CPLError(CE_Warning, CPLE_AppDefined,
"Setting data type to 16-bit integer.");
}
/* -------------------------------------------------------------------- */
/* What schema do we have (ground/crown fuels) */
/* -------------------------------------------------------------------- */
const bool bHaveCrownFuels = nBands == 8 || nBands == 10;
const bool bHaveGroundFuels = nBands == 7 || nBands == 10;
// Since units are 'configurable', we should check for user
// defined units. This is a bit cumbersome, but the user should
// be allowed to specify none to get default units/options. Use
// default units every chance we get.
GInt16 panMetadata[LCP_MAX_BANDS] = {
0, // 0 ELEVATION_UNIT
0, // 1 SLOPE_UNIT
2, // 2 ASPECT_UNIT
0, // 3 FUEL_MODEL_OPTION
1, // 4 CANOPY_COV_UNIT
3, // 5 CANOPY_HT_UNIT
3, // 6 CBH_UNIT
3, // 7 CBD_UNIT
1, // 8 DUFF_UNIT
0, // 9 CWD_OPTION
};
// Check the units/options for user overrides.
const char *pszTemp =
CSLFetchNameValueDef(papszOptions, "ELEVATION_UNIT", "METERS");
if (STARTS_WITH_CI(pszTemp, "METER"))
{
panMetadata[0] = 0;
}
else if (EQUAL(pszTemp, "FEET") || EQUAL(pszTemp, "FOOT"))
{
panMetadata[0] = 1;
}
else
{
CPLError(CE_Failure, CPLE_AppDefined,
"Invalid value (%s) for ELEVATION_UNIT.", pszTemp);
return nullptr;
}
pszTemp = CSLFetchNameValueDef(papszOptions, "SLOPE_UNIT", "DEGREES");
if (EQUAL(pszTemp, "DEGREES"))
{
panMetadata[1] = 0;
}
else if (EQUAL(pszTemp, "PERCENT"))
{
panMetadata[1] = 1;
}
else
{
CPLError(CE_Failure, CPLE_AppDefined,
"Invalid value (%s) for SLOPE_UNIT.", pszTemp);
return nullptr;
}
pszTemp =
CSLFetchNameValueDef(papszOptions, "ASPECT_UNIT", "AZIMUTH_DEGREES");
if (EQUAL(pszTemp, "GRASS_CATEGORIES"))
{
panMetadata[2] = 0;
}
else if (EQUAL(pszTemp, "GRASS_DEGREES"))
{
panMetadata[2] = 1;
}
else if (EQUAL(pszTemp, "AZIMUTH_DEGREES"))
{
panMetadata[2] = 2;
}
else
{
CPLError(CE_Failure, CPLE_AppDefined,
"Invalid value (%s) for ASPECT_UNIT.", pszTemp);