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sar_ceosdataset.cpp
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/******************************************************************************
*
* Project: ASI CEOS Translator
* Purpose: GDALDataset driver for CEOS translator.
* Author: Frank Warmerdam, [email protected]
*
******************************************************************************
* Copyright (c) 2000, Atlantis Scientific Inc.
* Copyright (c) 2009-2013, 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.
****************************************************************************/
#include "ceos.h"
#include "cpl_string.h"
#include "gdal_frmts.h"
#include "gdal_priv.h"
#include "rawdataset.h"
#include "ogr_srs_api.h"
#include <algorithm>
static GInt16 CastToGInt16(float val)
{
if (val < -32768.0)
val = -32768.0;
if (val > 32767)
val = 32767.0;
return static_cast<GInt16>(val);
}
static const char *const CeosExtension[][6] = {
{"vol", "led", "img", "trl", "nul", "ext"},
{"vol", "lea", "img", "trl", "nul", "ext"},
{"vol", "led", "img", "tra", "nul", "ext"},
{"vol", "lea", "img", "tra", "nul", "ext"},
{"vdf", "slf", "sdf", "stf", "nvd", "ext"},
{"vdf", "ldr", "img", "tra", "nul", "ext2"},
/* Jers from Japan- not sure if this is generalized as much as it could be
*/
{"VOLD", "Sarl_01", "Imop_%02d", "Sart_01", "NULL", "base"},
/* Radarsat: basename, not extension */
{"vdf_dat", "lea_%02d", "dat_%02d", "tra_%02d", "nul_vdf", "base"},
/* Ers-1: basename, not extension */
{"vdf_dat", "lea_%02d", "dat_%02d", "tra_%02d", "nul_dat", "base"},
/* Ers-2 from Telaviv */
{"volume", "leader", "image", "trailer", "nul_dat", "whole"},
/* Ers-1 from D-PAF */
{"VDF", "LF", "SLC", "", "", "ext"},
/* Radarsat-1 per #2051 */
{"vol", "sarl", "sard", "sart", "nvol", "ext"},
/* Radarsat-1 ASF */
{"", "L", "D", "", "", "ext"},
/* end marker */
{nullptr, nullptr, nullptr, nullptr, nullptr, nullptr}};
static int ProcessData(VSILFILE *fp, int fileid, CeosSARVolume_t *sar,
int max_records, vsi_l_offset max_bytes);
static CeosTypeCode_t QuadToTC(int a, int b, int c, int d)
{
CeosTypeCode_t abcd;
abcd.UCharCode.Subtype1 = (unsigned char)a;
abcd.UCharCode.Type = (unsigned char)b;
abcd.UCharCode.Subtype2 = (unsigned char)c;
abcd.UCharCode.Subtype3 = (unsigned char)d;
return abcd;
}
#define LEADER_DATASET_SUMMARY_TC QuadToTC(18, 10, 18, 20)
#define LEADER_DATASET_SUMMARY_ERS2_TC QuadToTC(10, 10, 31, 20)
#define LEADER_RADIOMETRIC_COMPENSATION_TC QuadToTC(18, 51, 18, 20)
#define VOLUME_DESCRIPTOR_RECORD_TC QuadToTC(192, 192, 18, 18)
#define IMAGE_HEADER_RECORD_TC QuadToTC(63, 192, 18, 18)
#define LEADER_RADIOMETRIC_DATA_RECORD_TC QuadToTC(18, 50, 18, 20)
#define LEADER_MAP_PROJ_RECORD_TC QuadToTC(10, 20, 31, 20)
// TODO: recond?
/* JERS from Japan has MAP_PROJ recond with different identifiers */
/* see CEOS-SAR-CCT Iss/Rev: 2/0 February 10, 1989 */
#define LEADER_MAP_PROJ_RECORD_JERS_TC QuadToTC(18, 20, 18, 20)
/* Leader from ASF has different identifiers */
#define LEADER_MAP_PROJ_RECORD_ASF_TC QuadToTC(10, 20, 18, 20)
#define LEADER_DATASET_SUMMARY_ASF_TC QuadToTC(10, 10, 18, 20)
#define LEADER_FACILITY_ASF_TC QuadToTC(90, 210, 18, 61)
/* For ERS calibration and incidence angle information */
#define ERS_GENERAL_FACILITY_DATA_TC QuadToTC(10, 200, 31, 50)
#define ERS_GENERAL_FACILITY_DATA_ALT_TC QuadToTC(10, 216, 31, 50)
#define RSAT_PROC_PARAM_TC QuadToTC(18, 120, 18, 20)
/************************************************************************/
/* ==================================================================== */
/* SAR_CEOSDataset */
/* ==================================================================== */
/************************************************************************/
class SAR_CEOSRasterBand;
class CCPRasterBand;
class PALSARRasterBand;
class SAR_CEOSDataset final : public GDALPamDataset
{
friend class SAR_CEOSRasterBand;
friend class CCPRasterBand;
friend class PALSARRasterBand;
CeosSARVolume_t sVolume;
VSILFILE *fpImage;
char **papszTempMD;
OGRSpatialReference m_oSRS{};
int nGCPCount;
GDAL_GCP *pasGCPList;
void ScanForGCPs();
void ScanForMetadata();
int ScanForMapProjection();
char **papszExtraFiles;
public:
SAR_CEOSDataset();
~SAR_CEOSDataset() override;
int GetGCPCount() override;
const OGRSpatialReference *GetGCPSpatialRef() const override;
const GDAL_GCP *GetGCPs() override;
char **GetMetadataDomainList() override;
char **GetMetadata(const char *pszDomain) override;
static GDALDataset *Open(GDALOpenInfo *);
virtual char **GetFileList(void) override;
};
/************************************************************************/
/* ==================================================================== */
/* CCPRasterBand */
/* ==================================================================== */
/************************************************************************/
class CCPRasterBand final : public GDALPamRasterBand
{
friend class SAR_CEOSDataset;
public:
CCPRasterBand(SAR_CEOSDataset *, int, GDALDataType);
CPLErr IReadBlock(int, int, void *) override;
};
/************************************************************************/
/* ==================================================================== */
/* PALSARRasterBand */
/* ==================================================================== */
/************************************************************************/
class PALSARRasterBand final : public GDALPamRasterBand
{
friend class SAR_CEOSDataset;
public:
PALSARRasterBand(SAR_CEOSDataset *, int);
CPLErr IReadBlock(int, int, void *) override;
};
/************************************************************************/
/* ==================================================================== */
/* SAR_CEOSRasterBand */
/* ==================================================================== */
/************************************************************************/
class SAR_CEOSRasterBand final : public GDALPamRasterBand
{
friend class SAR_CEOSDataset;
public:
SAR_CEOSRasterBand(SAR_CEOSDataset *, int, GDALDataType);
CPLErr IReadBlock(int, int, void *) override;
};
/************************************************************************/
/* SAR_CEOSRasterBand() */
/************************************************************************/
SAR_CEOSRasterBand::SAR_CEOSRasterBand(SAR_CEOSDataset *poGDSIn, int nBandIn,
GDALDataType eType)
{
poDS = poGDSIn;
nBand = nBandIn;
eDataType = eType;
nBlockXSize = poGDSIn->nRasterXSize;
nBlockYSize = 1;
}
/************************************************************************/
/* IReadBlock() */
/************************************************************************/
CPLErr SAR_CEOSRasterBand::IReadBlock(int /* nBlockXOff */, int nBlockYOff,
void *pImage)
{
SAR_CEOSDataset *poGDS = (SAR_CEOSDataset *)poDS;
struct CeosSARImageDesc *ImageDesc = &(poGDS->sVolume.ImageDesc);
int offset;
CalcCeosSARImageFilePosition(&(poGDS->sVolume), nBand, nBlockYOff + 1,
nullptr, &offset);
offset += ImageDesc->ImageDataStart;
/* -------------------------------------------------------------------- */
/* Load all the pixel data associated with this scanline. */
/* Ensure we handle multiple record scanlines properly. */
/* -------------------------------------------------------------------- */
int nPixelsRead = 0;
GByte *pabyRecord = (GByte *)CPLMalloc(
static_cast<size_t>(ImageDesc->BytesPerPixel) * nBlockXSize);
for (int iRecord = 0; iRecord < ImageDesc->RecordsPerLine; iRecord++)
{
int nPixelsToRead;
if (nPixelsRead + ImageDesc->PixelsPerRecord > nBlockXSize)
nPixelsToRead = nBlockXSize - nPixelsRead;
else
nPixelsToRead = ImageDesc->PixelsPerRecord;
CPL_IGNORE_RET_VAL(VSIFSeekL(poGDS->fpImage, offset, SEEK_SET));
CPL_IGNORE_RET_VAL(VSIFReadL(
pabyRecord + nPixelsRead * ImageDesc->BytesPerPixel, 1,
static_cast<vsi_l_offset>(nPixelsToRead) * ImageDesc->BytesPerPixel,
poGDS->fpImage));
nPixelsRead += nPixelsToRead;
offset += ImageDesc->BytesPerRecord;
}
/* -------------------------------------------------------------------- */
/* Copy the desired band out based on the size of the type, and */
/* the interleaving mode. */
/* -------------------------------------------------------------------- */
const int nBytesPerSample = GDALGetDataTypeSizeBytes(eDataType);
if (ImageDesc->ChannelInterleaving == CEOS_IL_PIXEL)
{
GDALCopyWords(pabyRecord + (nBand - 1) * nBytesPerSample, eDataType,
ImageDesc->BytesPerPixel, pImage, eDataType,
nBytesPerSample, nBlockXSize);
}
else if (ImageDesc->ChannelInterleaving == CEOS_IL_LINE)
{
GDALCopyWords(pabyRecord + (nBand - 1) * nBytesPerSample * nBlockXSize,
eDataType, nBytesPerSample, pImage, eDataType,
nBytesPerSample, nBlockXSize);
}
else if (ImageDesc->ChannelInterleaving == CEOS_IL_BAND)
{
memcpy(pImage, pabyRecord,
static_cast<size_t>(nBytesPerSample) * nBlockXSize);
}
#ifdef CPL_LSB
GDALSwapWords(pImage, nBytesPerSample, nBlockXSize, nBytesPerSample);
#endif
CPLFree(pabyRecord);
return CE_None;
}
/************************************************************************/
/* ==================================================================== */
/* CCPRasterBand */
/* ==================================================================== */
/************************************************************************/
/************************************************************************/
/* CCPRasterBand() */
/************************************************************************/
CCPRasterBand::CCPRasterBand(SAR_CEOSDataset *poGDSIn, int nBandIn,
GDALDataType eType)
{
poDS = poGDSIn;
nBand = nBandIn;
eDataType = eType;
nBlockXSize = poGDSIn->nRasterXSize;
nBlockYSize = 1;
if (nBand == 1)
SetMetadataItem("POLARIMETRIC_INTERP", "HH");
else if (nBand == 2)
SetMetadataItem("POLARIMETRIC_INTERP", "HV");
else if (nBand == 3)
SetMetadataItem("POLARIMETRIC_INTERP", "VH");
else if (nBand == 4)
SetMetadataItem("POLARIMETRIC_INTERP", "VV");
}
/************************************************************************/
/* IReadBlock() */
/************************************************************************/
/* From: http://southport.jpl.nasa.gov/software/dcomp/dcomp.html
ysca = sqrt{ [ (Byte(2) / 254 ) + 1.5] 2Byte(1) }
Re(SHH) = byte(3) ysca/127
Im(SHH) = byte(4) ysca/127
Re(SHV) = byte(5) ysca/127
Im(SHV) = byte(6) ysca/127
Re(SVH) = byte(7) ysca/127
Im(SVH) = byte(8) ysca/127
Re(SVV) = byte(9) ysca/127
Im(SVV) = byte(10) ysca/127
*/
CPLErr CCPRasterBand::IReadBlock(CPL_UNUSED int nBlockXOff, int nBlockYOff,
void *pImage)
{
SAR_CEOSDataset *poGDS = (SAR_CEOSDataset *)poDS;
struct CeosSARImageDesc *ImageDesc = &(poGDS->sVolume.ImageDesc);
int offset = ImageDesc->FileDescriptorLength +
ImageDesc->BytesPerRecord * nBlockYOff +
ImageDesc->ImageDataStart;
/* -------------------------------------------------------------------- */
/* Load all the pixel data associated with this scanline. */
/* -------------------------------------------------------------------- */
const int nBytesToRead = ImageDesc->BytesPerPixel * nBlockXSize;
GByte *pabyRecord = (GByte *)CPLMalloc(nBytesToRead);
if (VSIFSeekL(poGDS->fpImage, offset, SEEK_SET) != 0 ||
(int)VSIFReadL(pabyRecord, 1, nBytesToRead, poGDS->fpImage) !=
nBytesToRead)
{
CPLError(CE_Failure, CPLE_FileIO,
"Error reading %d bytes of CEOS record data at offset %d.\n"
"Reading file %s failed.",
nBytesToRead, offset, poGDS->GetDescription());
CPLFree(pabyRecord);
return CE_Failure;
}
/* -------------------------------------------------------------------- */
/* Initialize our power table if this is our first time through. */
/* -------------------------------------------------------------------- */
static float afPowTable[256];
static bool bPowTableInitialized = false;
if (!bPowTableInitialized)
{
bPowTableInitialized = true;
for (int i = 0; i < 256; i++)
{
afPowTable[i] = (float)pow(2.0, i - 128);
}
}
/* -------------------------------------------------------------------- */
/* Copy the desired band out based on the size of the type, and */
/* the interleaving mode. */
/* -------------------------------------------------------------------- */
for (int iX = 0; iX < nBlockXSize; iX++)
{
unsigned char *pabyGroup = pabyRecord + iX * ImageDesc->BytesPerPixel;
signed char *Byte =
(signed char *)pabyGroup - 1; /* A ones based alias */
double dfReSHH, dfImSHH, dfReSHV, dfImSHV, dfReSVH, dfImSVH, dfReSVV,
dfImSVV;
const double dfScale =
sqrt((Byte[2] / 254.0 + 1.5) * afPowTable[Byte[1] + 128]);
if (nBand == 1)
{
dfReSHH = Byte[3] * dfScale / 127.0;
dfImSHH = Byte[4] * dfScale / 127.0;
((float *)pImage)[iX * 2] = (float)dfReSHH;
((float *)pImage)[iX * 2 + 1] = (float)dfImSHH;
}
else if (nBand == 2)
{
dfReSHV = Byte[5] * dfScale / 127.0;
dfImSHV = Byte[6] * dfScale / 127.0;
((float *)pImage)[iX * 2] = (float)dfReSHV;
((float *)pImage)[iX * 2 + 1] = (float)dfImSHV;
}
else if (nBand == 3)
{
dfReSVH = Byte[7] * dfScale / 127.0;
dfImSVH = Byte[8] * dfScale / 127.0;
((float *)pImage)[iX * 2] = (float)dfReSVH;
((float *)pImage)[iX * 2 + 1] = (float)dfImSVH;
}
else if (nBand == 4)
{
dfReSVV = Byte[9] * dfScale / 127.0;
dfImSVV = Byte[10] * dfScale / 127.0;
((float *)pImage)[iX * 2] = (float)dfReSVV;
((float *)pImage)[iX * 2 + 1] = (float)dfImSVV;
}
}
CPLFree(pabyRecord);
return CE_None;
}
/************************************************************************/
/* ==================================================================== */
/* PALSARRasterBand */
/* ==================================================================== */
/************************************************************************/
/************************************************************************/
/* PALSARRasterBand() */
/************************************************************************/
PALSARRasterBand::PALSARRasterBand(SAR_CEOSDataset *poGDSIn, int nBandIn)
{
poDS = poGDSIn;
nBand = nBandIn;
eDataType = GDT_CInt16;
nBlockXSize = poGDSIn->nRasterXSize;
nBlockYSize = 1;
if (nBand == 1)
SetMetadataItem("POLARIMETRIC_INTERP", "Covariance_11");
else if (nBand == 2)
SetMetadataItem("POLARIMETRIC_INTERP", "Covariance_22");
else if (nBand == 3)
SetMetadataItem("POLARIMETRIC_INTERP", "Covariance_33");
else if (nBand == 4)
SetMetadataItem("POLARIMETRIC_INTERP", "Covariance_12");
else if (nBand == 5)
SetMetadataItem("POLARIMETRIC_INTERP", "Covariance_13");
else if (nBand == 6)
SetMetadataItem("POLARIMETRIC_INTERP", "Covariance_23");
}
/************************************************************************/
/* IReadBlock() */
/* */
/* Based on ERSDAC-VX-CEOS-004 */
/************************************************************************/
CPLErr PALSARRasterBand::IReadBlock(int /* nBlockXOff */, int nBlockYOff,
void *pImage)
{
SAR_CEOSDataset *poGDS = (SAR_CEOSDataset *)poDS;
struct CeosSARImageDesc *ImageDesc = &(poGDS->sVolume.ImageDesc);
int offset = ImageDesc->FileDescriptorLength +
ImageDesc->BytesPerRecord * nBlockYOff +
ImageDesc->ImageDataStart;
/* -------------------------------------------------------------------- */
/* Load all the pixel data associated with this scanline. */
/* -------------------------------------------------------------------- */
const int nBytesToRead = ImageDesc->BytesPerPixel * nBlockXSize;
GByte *pabyRecord = (GByte *)CPLMalloc(nBytesToRead);
if (VSIFSeekL(poGDS->fpImage, offset, SEEK_SET) != 0 ||
(int)VSIFReadL(pabyRecord, 1, nBytesToRead, poGDS->fpImage) !=
nBytesToRead)
{
CPLError(CE_Failure, CPLE_FileIO,
"Error reading %d bytes of CEOS record data at offset %d.\n"
"Reading file %s failed.",
nBytesToRead, offset, poGDS->GetDescription());
CPLFree(pabyRecord);
return CE_Failure;
}
/* -------------------------------------------------------------------- */
/* Copy the desired band out based on the size of the type, and */
/* the interleaving mode. */
/* -------------------------------------------------------------------- */
if (nBand == 1 || nBand == 2 || nBand == 3)
{
// we need to pre-initialize things to set the imaginary component to 0
memset(pImage, 0, nBlockXSize * 4);
GDALCopyWords(pabyRecord + 4 * (nBand - 1), GDT_Int16, 18, pImage,
GDT_Int16, 4, nBlockXSize);
#ifdef CPL_LSB
GDALSwapWords(pImage, 2, nBlockXSize, 4);
#endif
}
else
{
GDALCopyWords(pabyRecord + 6 + 4 * (nBand - 4), GDT_CInt16, 18, pImage,
GDT_CInt16, 4, nBlockXSize);
#ifdef CPL_LSB
GDALSwapWords(pImage, 2, nBlockXSize * 2, 2);
#endif
}
CPLFree(pabyRecord);
/* -------------------------------------------------------------------- */
/* Convert the values into covariance form as per: */
/* -------------------------------------------------------------------- */
/*
** 1) PALSAR- adjust so that it reads bands as a covariance matrix, and
** set polarimetric interpretation accordingly:
**
** Covariance_11=HH*conj(HH): already there
** Covariance_22=2*HV*conj(HV): need a factor of 2
** Covariance_33=VV*conj(VV): already there
** Covariance_12=sqrt(2)*HH*conj(HV): need the sqrt(2) factor
** Covariance_13=HH*conj(VV): already there
** Covariance_23=sqrt(2)*HV*conj(VV): need to take the conjugate, then
** multiply by sqrt(2)
**
*/
if (nBand == 2)
{
GInt16 *panLine = (GInt16 *)pImage;
for (int i = 0; i < nBlockXSize * 2; i++)
{
panLine[i] = (GInt16)CastToGInt16((float)2.0 * panLine[i]);
}
}
else if (nBand == 4)
{
const double sqrt_2 = pow(2.0, 0.5);
GInt16 *panLine = (GInt16 *)pImage;
for (int i = 0; i < nBlockXSize * 2; i++)
{
panLine[i] =
(GInt16)CastToGInt16((float)floor(panLine[i] * sqrt_2 + 0.5));
}
}
else if (nBand == 6)
{
GInt16 *panLine = (GInt16 *)pImage;
const double sqrt_2 = pow(2.0, 0.5);
// real portion - just multiple by sqrt(2)
for (int i = 0; i < nBlockXSize * 2; i += 2)
{
panLine[i] =
(GInt16)CastToGInt16((float)floor(panLine[i] * sqrt_2 + 0.5));
}
// imaginary portion - conjugate and multiply
for (int i = 1; i < nBlockXSize * 2; i += 2)
{
panLine[i] =
(GInt16)CastToGInt16((float)floor(-panLine[i] * sqrt_2 + 0.5));
}
}
return CE_None;
}
/************************************************************************/
/* ==================================================================== */
/* SAR_CEOSDataset */
/* ==================================================================== */
/************************************************************************/
/************************************************************************/
/* SAR_CEOSDataset() */
/************************************************************************/
SAR_CEOSDataset::SAR_CEOSDataset()
: fpImage(nullptr), papszTempMD(nullptr), nGCPCount(0), pasGCPList(nullptr),
papszExtraFiles(nullptr)
{
m_oSRS.SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER);
m_oSRS.importFromWkt(SRS_WKT_WGS84_LAT_LONG);
sVolume.Flavor = 0;
sVolume.Sensor = 0;
sVolume.ProductType = 0;
sVolume.FileNamingConvention = 0;
sVolume.VolumeDirectoryFile = 0;
sVolume.SARLeaderFile = 0;
sVolume.ImagryOptionsFile = 0;
sVolume.SARTrailerFile = 0;
sVolume.NullVolumeDirectoryFile = 0;
sVolume.ImageDesc.ImageDescValid = 0;
sVolume.ImageDesc.NumChannels = 0;
sVolume.ImageDesc.ChannelInterleaving = 0;
sVolume.ImageDesc.DataType = 0;
sVolume.ImageDesc.BytesPerRecord = 0;
sVolume.ImageDesc.Lines = 0;
sVolume.ImageDesc.TopBorderPixels = 0;
sVolume.ImageDesc.BottomBorderPixels = 0;
sVolume.ImageDesc.PixelsPerLine = 0;
sVolume.ImageDesc.LeftBorderPixels = 0;
sVolume.ImageDesc.RightBorderPixels = 0;
sVolume.ImageDesc.BytesPerPixel = 0;
sVolume.ImageDesc.RecordsPerLine = 0;
sVolume.ImageDesc.PixelsPerRecord = 0;
sVolume.ImageDesc.ImageDataStart = 0;
sVolume.ImageDesc.ImageSuffixData = 0;
sVolume.ImageDesc.FileDescriptorLength = 0;
sVolume.ImageDesc.PixelOrder = 0;
sVolume.ImageDesc.LineOrder = 0;
sVolume.ImageDesc.PixelDataBytesPerRecord = 0;
sVolume.RecordList = nullptr;
}
/************************************************************************/
/* ~SAR_CEOSDataset() */
/************************************************************************/
SAR_CEOSDataset::~SAR_CEOSDataset()
{
FlushCache(true);
CSLDestroy(papszTempMD);
if (fpImage != nullptr)
CPL_IGNORE_RET_VAL(VSIFCloseL(fpImage));
if (nGCPCount > 0)
{
GDALDeinitGCPs(nGCPCount, pasGCPList);
}
CPLFree(pasGCPList);
if (sVolume.RecordList)
{
for (Link_t *Links = sVolume.RecordList; Links != nullptr;
Links = Links->next)
{
if (Links->object)
{
DeleteCeosRecord((CeosRecord_t *)Links->object);
Links->object = nullptr;
}
}
DestroyList(sVolume.RecordList);
}
FreeRecipes();
CSLDestroy(papszExtraFiles);
}
/************************************************************************/
/* GetGCPCount() */
/************************************************************************/
int SAR_CEOSDataset::GetGCPCount()
{
return nGCPCount;
}
/************************************************************************/
/* GetGCPSpatialRef() */
/************************************************************************/
const OGRSpatialReference *SAR_CEOSDataset::GetGCPSpatialRef() const
{
if (nGCPCount > 0)
return &m_oSRS;
return nullptr;
}
/************************************************************************/
/* GetGCP() */
/************************************************************************/
const GDAL_GCP *SAR_CEOSDataset::GetGCPs()
{
return pasGCPList;
}
/************************************************************************/
/* GetMetadataDomainList() */
/************************************************************************/
char **SAR_CEOSDataset::GetMetadataDomainList()
{
return CSLAddString(GDALDataset::GetMetadataDomainList(),
"ceos-FFF-n-n-n-n:r");
}
/************************************************************************/
/* GetMetadata() */
/* */
/* We provide our own GetMetadata() so that we can override */
/* behavior for some very specialized domain names intended to */
/* give us access to raw record data. */
/* */
/* The domain must look like: */
/* ceos-FFF-n-n-n-n:r */
/* */
/* FFF - The file id - one of vol, lea, img, trl or nul. */
/* n-n-n-n - the record type code such as 18-10-18-20 for the */
/* dataset summary record in the leader file. */
/* :r - The zero based record number to fetch (optional) */
/* */
/* Note that only records that are pre-loaded will be */
/* accessible, and this normally means that most image records */
/* are not available. */
/************************************************************************/
char **SAR_CEOSDataset::GetMetadata(const char *pszDomain)
{
if (pszDomain == nullptr || !STARTS_WITH_CI(pszDomain, "ceos-"))
return GDALDataset::GetMetadata(pszDomain);
/* -------------------------------------------------------------------- */
/* Identify which file to fetch the file from. */
/* -------------------------------------------------------------------- */
int nFileId = -1;
if (STARTS_WITH_CI(pszDomain, "ceos-vol"))
{
nFileId = CEOS_VOLUME_DIR_FILE;
}
else if (STARTS_WITH_CI(pszDomain, "ceos-lea"))
{
nFileId = CEOS_LEADER_FILE;
}
else if (STARTS_WITH_CI(pszDomain, "ceos-img"))
{
nFileId = CEOS_IMAGRY_OPT_FILE;
}
else if (STARTS_WITH_CI(pszDomain, "ceos-trl"))
{
nFileId = CEOS_TRAILER_FILE;
}
else if (STARTS_WITH_CI(pszDomain, "ceos-nul"))
{
nFileId = CEOS_NULL_VOL_FILE;
}
else
return nullptr;
pszDomain += 8;
/* -------------------------------------------------------------------- */
/* Identify the record type. */
/* -------------------------------------------------------------------- */
int a, b, c, d, nRecordIndex = -1;
if (sscanf(pszDomain, "-%d-%d-%d-%d:%d", &a, &b, &c, &d, &nRecordIndex) !=
5 &&
sscanf(pszDomain, "-%d-%d-%d-%d", &a, &b, &c, &d) != 4)
{
return nullptr;
}
CeosTypeCode_t sTypeCode = QuadToTC(a, b, c, d);
/* -------------------------------------------------------------------- */
/* Try to fetch the record. */
/* -------------------------------------------------------------------- */
CeosRecord_t *record = FindCeosRecord(sVolume.RecordList, sTypeCode,
nFileId, -1, nRecordIndex);
if (record == nullptr)
return nullptr;
/* -------------------------------------------------------------------- */
/* Massage the data into a safe textual format. The RawRecord */
/* just has zero bytes turned into spaces while the */
/* EscapedRecord has regular backslash escaping applied to zero */
/* chars, double quotes, and backslashes. */
/* just turn zero bytes into spaces. */
/* -------------------------------------------------------------------- */
CSLDestroy(papszTempMD);
// Escaped version
char *pszSafeCopy = CPLEscapeString((char *)record->Buffer, record->Length,
CPLES_BackslashQuotable);
papszTempMD = CSLSetNameValue(nullptr, "EscapedRecord", pszSafeCopy);
CPLFree(pszSafeCopy);
// Copy with '\0' replaced by spaces.
pszSafeCopy = (char *)CPLCalloc(1, record->Length + 1);
memcpy(pszSafeCopy, record->Buffer, record->Length);
for (int i = 0; i < record->Length; i++)
if (pszSafeCopy[i] == '\0')
pszSafeCopy[i] = ' ';
papszTempMD = CSLSetNameValue(papszTempMD, "RawRecord", pszSafeCopy);
CPLFree(pszSafeCopy);
return papszTempMD;
}
/************************************************************************/
/* ScanForMetadata() */
/************************************************************************/
void SAR_CEOSDataset::ScanForMetadata()
{
/* -------------------------------------------------------------------- */
/* Get the volume id (with the sensor name) */
/* -------------------------------------------------------------------- */
CeosRecord_t *record =
FindCeosRecord(sVolume.RecordList, VOLUME_DESCRIPTOR_RECORD_TC,
CEOS_VOLUME_DIR_FILE, -1, -1);
char szVolId[128];
szVolId[0] = '\0';
char szField[128];
szField[0] = '\0';
if (record != nullptr)
{
szVolId[16] = '\0';
GetCeosField(record, 61, "A16", szVolId);
SetMetadataItem("CEOS_LOGICAL_VOLUME_ID", szVolId);
/* --------------------------------------------------------------------
*/
/* Processing facility */
/* --------------------------------------------------------------------
*/
szField[0] = '\0';
szField[12] = '\0';
GetCeosField(record, 149, "A12", szField);
if (!STARTS_WITH_CI(szField, " "))
SetMetadataItem("CEOS_PROCESSING_FACILITY", szField);
/* --------------------------------------------------------------------
*/
/* Agency */
/* --------------------------------------------------------------------
*/
szField[8] = '\0';
GetCeosField(record, 141, "A8", szField);
if (!STARTS_WITH_CI(szField, " "))
SetMetadataItem("CEOS_PROCESSING_AGENCY", szField);
/* --------------------------------------------------------------------
*/
/* Country */
/* --------------------------------------------------------------------
*/
szField[12] = '\0';
GetCeosField(record, 129, "A12", szField);
if (!STARTS_WITH_CI(szField, " "))
SetMetadataItem("CEOS_PROCESSING_COUNTRY", szField);
/* --------------------------------------------------------------------
*/
/* software id. */
/* --------------------------------------------------------------------
*/
szField[12] = '\0';
GetCeosField(record, 33, "A12", szField);
if (!STARTS_WITH_CI(szField, " "))
SetMetadataItem("CEOS_SOFTWARE_ID", szField);
/* --------------------------------------------------------------------
*/
/* product identifier. */
/* --------------------------------------------------------------------
*/
szField[8] = '\0';
GetCeosField(record, 261, "A8", szField);
if (!STARTS_WITH_CI(szField, " "))
SetMetadataItem("CEOS_PRODUCT_ID", szField);
/* --------------------------------------------------------------------
*/
/* volume identifier. */
/* --------------------------------------------------------------------
*/
szField[16] = '\0';
GetCeosField(record, 77, "A16", szField);
if (!STARTS_WITH_CI(szField, " "))
SetMetadataItem("CEOS_VOLSET_ID", szField);
}
/* ==================================================================== */
/* Dataset summary record. */
/* ==================================================================== */
record = FindCeosRecord(sVolume.RecordList, LEADER_DATASET_SUMMARY_TC,
CEOS_LEADER_FILE, -1, -1);
if (record == nullptr)
record =
FindCeosRecord(sVolume.RecordList, LEADER_DATASET_SUMMARY_ASF_TC,
CEOS_LEADER_FILE, -1, -1);
if (record == nullptr)
record = FindCeosRecord(sVolume.RecordList, LEADER_DATASET_SUMMARY_TC,
CEOS_TRAILER_FILE, -1, -1);
if (record == nullptr)
record =
FindCeosRecord(sVolume.RecordList, LEADER_DATASET_SUMMARY_ERS2_TC,
CEOS_LEADER_FILE, -1, -1);
if (record != nullptr)
{
/* --------------------------------------------------------------------
*/
/* Get the acquisition date. */
/* --------------------------------------------------------------------
*/
szField[0] = '\0';
szField[32] = '\0';
GetCeosField(record, 69, "A32", szField);