/
gdalwarp_lib.cpp
4443 lines (4014 loc) · 179 KB
/
gdalwarp_lib.cpp
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/******************************************************************************
*
* Project: High Performance Image Reprojector
* Purpose: Test program for high performance warper API.
* Author: Frank Warmerdam <warmerdam@pobox.com>
*
******************************************************************************
* Copyright (c) 2002, i3 - information integration and imaging
* Fort Collin, CO
* Copyright (c) 2007-2015, Even Rouault <even dot rouault at spatialys.com>
* Copyright (c) 2015, Faza Mahamood
*
* 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 "gdal_utils.h"
#include "gdal_utils_priv.h"
#include <cctype>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>
#include <array>
#include <limits>
#include <vector>
#include "commonutils.h"
#include "cpl_conv.h"
#include "cpl_error.h"
#include "cpl_progress.h"
#include "cpl_string.h"
#include "gdal.h"
#include "gdal_alg.h"
#include "gdal_alg_priv.h"
#include "gdal_priv.h"
#include "gdalwarper.h"
#include "ogr_api.h"
#include "ogr_core.h"
#include "ogr_geometry.h"
#include "ogr_spatialref.h"
#include "ogr_srs_api.h"
#include "vrtdataset.h"
#include "../frmts/gtiff/cogdriver.h"
CPL_CVSID("$Id$")
/************************************************************************/
/* GDALWarpAppOptions */
/************************************************************************/
/** Options for use with GDALWarp(). GDALWarpAppOptions* must be allocated and
* freed with GDALWarpAppOptionsNew() and GDALWarpAppOptionsFree() respectively.
*/
struct GDALWarpAppOptions
{
/*! set georeferenced extents of output file to be created (in target SRS by default,
or in the SRS specified with pszTE_SRS) */
double dfMinX;
double dfMinY;
double dfMaxX;
double dfMaxY;
/*! the SRS in which to interpret the coordinates given in GDALWarpAppOptions::dfMinX,
GDALWarpAppOptions::dfMinY, GDALWarpAppOptions::dfMaxX and GDALWarpAppOptions::dfMaxY.
The SRS may be any of the usual GDAL/OGR forms,
complete WKT, PROJ.4, EPSG:n or a file containing the WKT. It is a
convenience e.g. when knowing the output coordinates in a
geodetic long/lat SRS, but still wanting a result in a projected
coordinate system. */
char *pszTE_SRS;
/*! set output file resolution (in target georeferenced units) */
double dfXRes;
double dfYRes;
/*! align the coordinates of the extent of the output file to the values of the
GDALWarpAppOptions::dfXRes and GDALWarpAppOptions::dfYRes, such that the
aligned extent includes the minimum extent. */
bool bTargetAlignedPixels;
/*! set output file size in pixels and lines. If GDALWarpAppOptions::nForcePixels
or GDALWarpAppOptions::nForceLines is set to 0, the other dimension will be
guessed from the computed resolution. Note that GDALWarpAppOptions::nForcePixels and
GDALWarpAppOptions::nForceLines cannot be used with GDALWarpAppOptions::dfXRes and
GDALWarpAppOptions::dfYRes. */
int nForcePixels;
int nForceLines;
/*! allow or suppress progress monitor and other non-error output */
bool bQuiet;
/*! the progress function to use */
GDALProgressFunc pfnProgress;
/*! pointer to the progress data variable */
void *pProgressData;
/*! creates an output alpha band to identify nodata (unset/transparent) pixels
when set to true */
bool bEnableDstAlpha;
/*! forces the last band of an input file to be considered as alpha band. */
bool bEnableSrcAlpha;
/*! Prevent a source alpha band from being considered as such */
bool bDisableSrcAlpha;
/*! output format. Use the short format name. */
char *pszFormat;
bool bCreateOutput;
/*! list of warp options. ("NAME1=VALUE1","NAME2=VALUE2",...). The
GDALWarpOptions::papszWarpOptions docs show all options. */
char **papszWarpOptions;
double dfErrorThreshold;
/*! the amount of memory (in megabytes) that the warp API is allowed
to use for caching. */
double dfWarpMemoryLimit;
/*! list of create options for the output format driver. See format
specific documentation for legal creation options for each format. */
char **papszCreateOptions;
/*! the data type of the output bands */
GDALDataType eOutputType;
/*! working pixel data type. The data type of pixels in the source
image and destination image buffers. */
GDALDataType eWorkingType;
/*! the resampling method. Available methods are: near, bilinear,
cubic, cubicspline, lanczos, average, mode, max, min, med,
q1, q3 */
GDALResampleAlg eResampleAlg;
/*! nodata masking values for input bands (different values can be supplied
for each band). ("value1 value2 ..."). Masked values will not be used
in interpolation. Use a value of "None" to ignore intrinsic nodata
settings on the source dataset. */
char *pszSrcNodata;
/*! nodata values for output bands (different values can be supplied for
each band). ("value1 value2 ..."). New files will be initialized to
this value and if possible the nodata value will be recorded in the
output file. Use a value of "None" to ensure that nodata is not defined.
If this argument is not used then nodata values will be copied from
the source dataset. */
char *pszDstNodata;
/*! use multithreaded warping implementation. Multiple threads will be used
to process chunks of image and perform input/output operation simultaneously. */
bool bMulti;
/*! list of transformer options suitable to pass to GDALCreateGenImgProjTransformer2().
("NAME1=VALUE1","NAME2=VALUE2",...) */
char **papszTO;
/*! enable use of a blend cutline from the name OGR support pszCutlineDSName */
char *pszCutlineDSName;
/*! the named layer to be selected from the cutline datasource */
char *pszCLayer;
/*! restrict desired cutline features based on attribute query */
char *pszCWHERE;
/*! SQL query to select the cutline features instead of from a layer
with pszCLayer */
char *pszCSQL;
/*! crop the extent of the target dataset to the extent of the cutline */
bool bCropToCutline;
/*! copy dataset and band metadata will be copied from the first source dataset. Items that differ between
source datasets will be set "*" (see GDALWarpAppOptions::pszMDConflictValue) */
bool bCopyMetadata;
/*! copy band information from the first source dataset */
bool bCopyBandInfo;
/*! value to set metadata items that conflict between source datasets (default is "*").
Use "" to remove conflicting items. */
char *pszMDConflictValue;
/*! set the color interpretation of the bands of the target dataset from the source dataset */
bool bSetColorInterpretation;
/*! overview level of source files to be used */
int nOvLevel;
/*! Whether to disable vertical grid shift adjustment */
bool bNoVShiftGrid;
};
static CPLErr
LoadCutline( const char *pszCutlineDSName, const char *pszCLayer,
const char *pszCWHERE, const char *pszCSQL,
OGRGeometryH *phCutlineRet );
static CPLErr
TransformCutlineToSource( GDALDatasetH hSrcDS, OGRGeometryH hCutline,
char ***ppapszWarpOptions, char **papszTO );
static GDALDatasetH
GDALWarpCreateOutput( int nSrcCount, GDALDatasetH *pahSrcDS, const char *pszFilename,
const char *pszFormat, char **papszTO,
CSLConstList papszCreateOptions, GDALDataType eDT,
void ** phTransformArg,
bool bSetColorInterpretation,
GDALWarpAppOptions *psOptions);
static void
RemoveConflictingMetadata( GDALMajorObjectH hObj, char **papszMetadata,
const char *pszValueConflict );
static bool GetResampleAlg(const char* pszResampling,
GDALResampleAlg& eResampleAlg);
static double GetAverageSegmentLength(OGRGeometryH hGeom)
{
if( hGeom == nullptr )
return 0;
switch(wkbFlatten(OGR_G_GetGeometryType(hGeom)))
{
case wkbLineString:
{
if( OGR_G_GetPointCount(hGeom) == 0 )
return 0;
double dfSum = 0;
for(int i=0;i<OGR_G_GetPointCount(hGeom)-1;i++)
{
double dfX1 = OGR_G_GetX(hGeom, i);
double dfY1 = OGR_G_GetY(hGeom, i);
double dfX2 = OGR_G_GetX(hGeom, i+1);
double dfY2 = OGR_G_GetY(hGeom, i+1);
double dfDX = dfX2 - dfX1;
double dfDY = dfY2 - dfY1;
dfSum += sqrt(dfDX * dfDX + dfDY * dfDY);
}
return dfSum / OGR_G_GetPointCount(hGeom);
}
case wkbPolygon:
case wkbMultiPolygon:
case wkbMultiLineString:
case wkbGeometryCollection:
{
if( OGR_G_GetGeometryCount(hGeom) == 0 )
return 0;
double dfSum = 0;
for(int i=0; i< OGR_G_GetGeometryCount(hGeom); i++)
{
dfSum += GetAverageSegmentLength(OGR_G_GetGeometryRef(hGeom, i));
}
return dfSum / OGR_G_GetGeometryCount(hGeom);
}
default:
return 0;
}
}
/************************************************************************/
/* GetSrcDSProjection() */
/* */
/* Takes into account SRC_SRS transformer option in priority, and then */
/* dataset characteristics as well as the METHOD transformer */
/* option to determine the source SRS. */
/************************************************************************/
static CPLString GetSrcDSProjection( GDALDatasetH hDS,
char** papszTO )
{
const char *pszProjection = CSLFetchNameValue( papszTO, "SRC_SRS" );
if( pszProjection != nullptr || hDS == nullptr )
{
return pszProjection ? pszProjection : "";
}
const char *pszMethod = CSLFetchNameValue( papszTO, "METHOD" );
char** papszMD = nullptr;
const OGRSpatialReferenceH hSRS = GDALGetSpatialRef( hDS );
if( hSRS
&& (pszMethod == nullptr || EQUAL(pszMethod,"GEOTRANSFORM")) )
{
char* pszWKT = nullptr;
{
CPLErrorStateBackuper oErrorStateBackuper;
CPLErrorHandlerPusher oErrorHandler(CPLQuietErrorHandler);
if( OSRExportToWkt(hSRS, &pszWKT) != OGRERR_NONE )
{
CPLFree(pszWKT);
pszWKT = nullptr;
const char* const apszOptions[] = { "FORMAT=WKT2", nullptr };
OSRExportToWktEx(hSRS, &pszWKT, apszOptions );
}
}
CPLString osWKT = pszWKT ? pszWKT : "";
CPLFree(pszWKT);
return osWKT;
}
else if( GDALGetGCPProjection( hDS ) != nullptr
&& strlen(GDALGetGCPProjection( hDS )) > 0
&& GDALGetGCPCount( hDS ) > 1
&& (pszMethod == nullptr || STARTS_WITH_CI(pszMethod, "GCP_")) )
{
pszProjection = GDALGetGCPProjection( hDS );
}
else if( GDALGetMetadata( hDS, "RPC" ) != nullptr &&
(pszMethod == nullptr || EQUAL(pszMethod,"RPC") ) )
{
pszProjection = SRS_WKT_WGS84_LAT_LONG;
}
else if( (papszMD = GDALGetMetadata( hDS, "GEOLOCATION" )) != nullptr &&
(pszMethod == nullptr || EQUAL(pszMethod,"GEOLOC_ARRAY") ) )
{
pszProjection = CSLFetchNameValue( papszMD, "SRS" );
}
return pszProjection ? pszProjection : "";
}
/************************************************************************/
/* CropToCutline() */
/************************************************************************/
static CPLErr CropToCutline( OGRGeometryH hCutline, char** papszTO,
char** papszWarpOptions,
int nSrcCount, GDALDatasetH *pahSrcDS,
double& dfMinX, double& dfMinY,
double& dfMaxX, double &dfMaxY,
const GDALWarpAppOptions* psOptions )
{
// We could possibly directly reproject from cutline SRS to target SRS,
// but when applying the cutline, it is reprojected to source raster image
// space using the source SRS. To be consistent, we reproject
// the cutline from cutline SRS to source SRS and then from source SRS to
// target SRS.
OGRSpatialReferenceH hCutlineSRS = OGR_G_GetSpatialReference( hCutline );
const char *pszThisTargetSRS = CSLFetchNameValue( papszTO, "DST_SRS" );
OGRSpatialReferenceH hSrcSRS = nullptr;
OGRSpatialReferenceH hDstSRS = nullptr;
const CPLString osThisSourceSRS =
GetSrcDSProjection(
nSrcCount > 0 ? pahSrcDS[0] : nullptr,
papszTO);
if( !osThisSourceSRS.empty() )
{
hSrcSRS = OSRNewSpatialReference(nullptr);
OSRSetAxisMappingStrategy(hSrcSRS, OAMS_TRADITIONAL_GIS_ORDER);
if( OSRSetFromUserInput( hSrcSRS, osThisSourceSRS ) != OGRERR_NONE )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot compute bounding box of cutline.");
OSRDestroySpatialReference(hSrcSRS);
return CE_Failure;
}
}
else if( pszThisTargetSRS == nullptr && hCutlineSRS == nullptr )
{
OGREnvelope sEnvelope;
OGR_G_GetEnvelope(hCutline, &sEnvelope);
dfMinX = sEnvelope.MinX;
dfMinY = sEnvelope.MinY;
dfMaxX = sEnvelope.MaxX;
dfMaxY = sEnvelope.MaxY;
return CE_None;
}
else
{
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot compute bounding box of cutline. Cannot find "
"source SRS");
return CE_Failure;
}
if ( pszThisTargetSRS != nullptr )
{
hDstSRS = OSRNewSpatialReference(nullptr);
OSRSetAxisMappingStrategy(hDstSRS, OAMS_TRADITIONAL_GIS_ORDER);
if( OSRSetFromUserInput( hDstSRS, pszThisTargetSRS ) != OGRERR_NONE )
{
CPLError(CE_Failure, CPLE_AppDefined, "Cannot compute bounding box of cutline.");
OSRDestroySpatialReference(hSrcSRS);
OSRDestroySpatialReference(hDstSRS);
return CE_Failure;
}
}
else
hDstSRS = OSRClone(hSrcSRS);
OGRGeometryH hCutlineGeom = OGR_G_Clone( hCutline );
OGRSpatialReferenceH hCutlineOrTargetSRS = hCutlineSRS ? hCutlineSRS : hDstSRS;
OGRCoordinateTransformationH hCTCutlineToSrc = nullptr;
OGRCoordinateTransformationH hCTSrcToDst = nullptr;
if( !OSRIsSame(hCutlineOrTargetSRS, hSrcSRS) )
hCTCutlineToSrc = OCTNewCoordinateTransformation(hCutlineOrTargetSRS, hSrcSRS);
if( !OSRIsSame(hSrcSRS, hDstSRS) )
hCTSrcToDst = OCTNewCoordinateTransformation(hSrcSRS, hDstSRS);
OSRDestroySpatialReference(hSrcSRS);
hSrcSRS = nullptr;
OSRDestroySpatialReference(hDstSRS);
hDstSRS = nullptr;
// Reproject cutline to target SRS, by doing intermediate vertex densification
// in source SRS.
if( hCTSrcToDst != nullptr || hCTCutlineToSrc != nullptr )
{
OGREnvelope sLastEnvelope, sCurEnvelope;
OGRGeometryH hTransformedGeom = nullptr;
OGRGeometryH hGeomInSrcSRS = OGR_G_Clone(hCutlineGeom);
if( hCTCutlineToSrc != nullptr )
OGR_G_Transform( hGeomInSrcSRS, hCTCutlineToSrc );
const double epsilon = std::numeric_limits<double>::epsilon();
for(int nIter=0;nIter<10;nIter++)
{
OGR_G_DestroyGeometry(hTransformedGeom);
hTransformedGeom = OGR_G_Clone(hGeomInSrcSRS);
if( hCTSrcToDst != nullptr )
OGR_G_Transform( hTransformedGeom, hCTSrcToDst );
OGR_G_GetEnvelope(hTransformedGeom, &sCurEnvelope);
if( nIter > 0 || hCTSrcToDst == nullptr )
{
if (std::abs(sCurEnvelope.MinX - sLastEnvelope.MinX) <=
epsilon * std::abs(sCurEnvelope.MinX + sLastEnvelope.MinX) &&
std::abs(sCurEnvelope.MinY - sLastEnvelope.MinY) <=
epsilon * std::abs(sCurEnvelope.MinY + sLastEnvelope.MinY) &&
std::abs(sCurEnvelope.MaxX - sLastEnvelope.MaxX) <=
epsilon * std::abs(sCurEnvelope.MaxX + sLastEnvelope.MaxX) &&
std::abs(sCurEnvelope.MaxY - sLastEnvelope.MaxY) <=
epsilon * std::abs(sCurEnvelope.MaxY + sLastEnvelope.MaxY))
{
break;
}
}
double dfAverageSegmentLength = GetAverageSegmentLength(hGeomInSrcSRS);
OGR_G_Segmentize(hGeomInSrcSRS, dfAverageSegmentLength/4);
sLastEnvelope = sCurEnvelope;
}
OGR_G_DestroyGeometry(hGeomInSrcSRS);
OGR_G_DestroyGeometry(hCutlineGeom);
hCutlineGeom = hTransformedGeom;
}
if( hCTCutlineToSrc)
OCTDestroyCoordinateTransformation(hCTCutlineToSrc);
if( hCTSrcToDst )
OCTDestroyCoordinateTransformation(hCTSrcToDst);
OGREnvelope sEnvelope;
OGR_G_GetEnvelope(hCutlineGeom, &sEnvelope);
dfMinX = sEnvelope.MinX;
dfMinY = sEnvelope.MinY;
dfMaxX = sEnvelope.MaxX;
dfMaxY = sEnvelope.MaxY;
if( hCTSrcToDst == nullptr && nSrcCount > 0 &&
psOptions->dfXRes == 0.0 && psOptions->dfYRes == 0.0 )
{
// No raster reprojection: stick on exact pixel boundaries of the source
// to preserve resolution and avoid resampling
double adfGT[6];
if( GDALGetGeoTransform(pahSrcDS[0], adfGT) == CE_None )
{
if( CPLFetchBool(papszWarpOptions, "CUTLINE_ALL_TOUCHED", false) )
{
// All touched ? Then make the extent a bit larger than the
// cutline envelope
dfMinX = adfGT[0] + floor((dfMinX - adfGT[0]) / adfGT[1] + 1e-8) * adfGT[1];
dfMinY = adfGT[3] + ceil((dfMinY - adfGT[3]) / adfGT[5] - 1e-8) * adfGT[5];
dfMaxX = adfGT[0] + ceil((dfMaxX - adfGT[0]) / adfGT[1] - 1e-8) * adfGT[1];
dfMaxY = adfGT[3] + floor((dfMaxY - adfGT[3]) / adfGT[5] + 1e-8) * adfGT[5];
}
else
{
// Otherwise, make it a bit smaller
dfMinX = adfGT[0] + ceil((dfMinX - adfGT[0]) / adfGT[1] - 1e-8) * adfGT[1];
dfMinY = adfGT[3] + floor((dfMinY - adfGT[3]) / adfGT[5] + 1e-8) * adfGT[5];
dfMaxX = adfGT[0] + floor((dfMaxX - adfGT[0]) / adfGT[1] + 1e-8) * adfGT[1];
dfMaxY = adfGT[3] + ceil((dfMaxY - adfGT[3]) / adfGT[5] - 1e-8) * adfGT[5];
}
}
}
OGR_G_DestroyGeometry(hCutlineGeom);
return CE_None;
}
/************************************************************************/
/* GDALWarpAppOptionsClone() */
/************************************************************************/
static
GDALWarpAppOptions* GDALWarpAppOptionsClone(const GDALWarpAppOptions *psOptionsIn)
{
GDALWarpAppOptions* psOptions = static_cast<GDALWarpAppOptions *>(
CPLMalloc(sizeof(GDALWarpAppOptions)));
memcpy(psOptions, psOptionsIn, sizeof(GDALWarpAppOptions));
if( psOptionsIn->pszFormat) psOptions->pszFormat = CPLStrdup(psOptionsIn->pszFormat);
psOptions->papszCreateOptions = CSLDuplicate(psOptionsIn->papszCreateOptions);
psOptions->papszWarpOptions = CSLDuplicate(psOptionsIn->papszWarpOptions);
if( psOptionsIn->pszSrcNodata ) psOptions->pszSrcNodata = CPLStrdup(psOptionsIn->pszSrcNodata);
if( psOptionsIn->pszDstNodata ) psOptions->pszDstNodata = CPLStrdup(psOptionsIn->pszDstNodata);
psOptions->papszTO = CSLDuplicate(psOptionsIn->papszTO);
if( psOptionsIn->pszCutlineDSName ) psOptions->pszCutlineDSName = CPLStrdup(psOptionsIn->pszCutlineDSName);
if( psOptionsIn->pszCLayer ) psOptions->pszCLayer = CPLStrdup(psOptionsIn->pszCLayer);
if( psOptionsIn->pszCWHERE ) psOptions->pszCWHERE = CPLStrdup(psOptionsIn->pszCWHERE);
if( psOptionsIn->pszCSQL ) psOptions->pszCSQL = CPLStrdup(psOptionsIn->pszCSQL);
if( psOptionsIn->pszMDConflictValue ) psOptions->pszMDConflictValue = CPLStrdup(psOptionsIn->pszMDConflictValue);
if( psOptionsIn->pszTE_SRS ) psOptions->pszTE_SRS = CPLStrdup(psOptionsIn->pszTE_SRS);
return psOptions;
}
/************************************************************************/
/* Is3DGeogcs() */
/************************************************************************/
static bool Is3DGeogcs( const OGRSpatialReference& oSRS )
{
const char* pszName = oSRS.GetAuthorityName(nullptr);
const char* pszCode = oSRS.GetAuthorityCode(nullptr);
// Yep, we only support that EPSG:4979, ie WGS 84 3D
return pszName != nullptr && EQUAL(pszName, "EPSG") &&
pszCode != nullptr && EQUAL(pszCode, "4979");
}
/************************************************************************/
/* ApplyVerticalShiftGrid() */
/************************************************************************/
static GDALDatasetH ApplyVerticalShiftGrid( GDALDatasetH hWrkSrcDS,
const GDALWarpAppOptions* psOptions,
GDALDatasetH hVRTDS,
bool& bErrorOccurredOut )
{
bErrorOccurredOut = false;
// Check if we must do vertical shift grid transform
OGRSpatialReference oSRSSrc;
OGRSpatialReference oSRSDst;
const char* pszSrcWKT = CSLFetchNameValue(psOptions->papszTO, "SRC_SRS");
if( pszSrcWKT )
oSRSSrc.SetFromUserInput( pszSrcWKT );
else
{
auto hSRS = GDALGetSpatialRef(hWrkSrcDS);
if( hSRS )
oSRSSrc = *(OGRSpatialReference::FromHandle(hSRS));
}
const char* pszDstWKT = CSLFetchNameValue( psOptions->papszTO, "DST_SRS" );
if( pszDstWKT )
oSRSDst.SetFromUserInput( pszDstWKT );
double adfGT[6] = {};
if( GDALGetRasterCount(hWrkSrcDS) == 1 &&
GDALGetGeoTransform(hWrkSrcDS, adfGT) == CE_None &&
!oSRSSrc.IsEmpty() && !oSRSDst.IsEmpty() )
{
if( (oSRSSrc.IsCompound() || Is3DGeogcs(oSRSSrc)) ||
(oSRSDst.IsCompound() || Is3DGeogcs(oSRSDst)) )
{
const char *pszSrcProj4Geoids =
oSRSSrc.GetExtension( "VERT_DATUM", "PROJ4_GRIDS" );
const char *pszDstProj4Geoids =
oSRSDst.GetExtension( "VERT_DATUM", "PROJ4_GRIDS" );
if( oSRSSrc.IsCompound() && pszSrcProj4Geoids == nullptr )
{
CPLDebug("GDALWARP", "Source SRS is a compound CRS but lacks "
"+geoidgrids");
}
if( oSRSDst.IsCompound() && pszDstProj4Geoids == nullptr )
{
CPLDebug("GDALWARP", "Target SRS is a compound CRS but lacks "
"+geoidgrids");
}
if( pszSrcProj4Geoids != nullptr && pszDstProj4Geoids != nullptr &&
EQUAL(pszSrcProj4Geoids, pszDstProj4Geoids) )
{
pszSrcProj4Geoids = nullptr;
pszDstProj4Geoids = nullptr;
}
// Select how to go from input dataset units to meters
const char* pszUnit =
GDALGetRasterUnitType( GDALGetRasterBand(hWrkSrcDS, 1) );
double dfToMeterSrc = 1.0;
if( pszUnit && (EQUAL(pszUnit, "m") ||
EQUAL(pszUnit, "meter")||
EQUAL(pszUnit, "metre")) )
{
}
else if( pszUnit && (EQUAL(pszUnit, "ft") ||
EQUAL(pszUnit, "foot")) )
{
dfToMeterSrc = CPLAtof(SRS_UL_FOOT_CONV);
}
else
{
if( pszUnit && !EQUAL(pszUnit, "") )
{
CPLError(CE_Warning, CPLE_AppDefined,
"Unknown units=%s", pszUnit);
}
if( oSRSSrc.IsCompound() )
{
dfToMeterSrc =
oSRSSrc.GetTargetLinearUnits("VERT_CS");
}
else if( oSRSSrc.IsProjected() )
{
dfToMeterSrc = oSRSSrc.GetLinearUnits();
}
}
double dfToMeterDst = 1.0;
if( oSRSDst.IsCompound() )
{
dfToMeterDst =
oSRSDst.GetTargetLinearUnits("VERT_CS");
}
else if( oSRSDst.IsProjected() )
{
dfToMeterDst = oSRSDst.GetLinearUnits();
}
char** papszOptions = nullptr;
if( psOptions->eOutputType != GDT_Unknown )
{
papszOptions = CSLSetNameValue(papszOptions,
"DATATYPE",
GDALGetDataTypeName(psOptions->eOutputType));
}
papszOptions = CSLSetNameValue(papszOptions,
"ERROR_ON_MISSING_VERT_SHIFT",
CSLFetchNameValue(psOptions->papszTO,
"ERROR_ON_MISSING_VERT_SHIFT"));
papszOptions = CSLSetNameValue(papszOptions, "SRC_SRS",
pszSrcWKT);
if( pszSrcProj4Geoids != nullptr )
{
int bError = FALSE;
GDALDatasetH hGridDataset =
GDALOpenVerticalShiftGrid(pszSrcProj4Geoids, &bError);
if( bError && hGridDataset == nullptr )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot open %s.", pszSrcProj4Geoids);
bErrorOccurredOut = true;
CSLDestroy(papszOptions);
return hWrkSrcDS;
}
else if( hGridDataset != nullptr )
{
// Transform from source vertical datum to WGS84
GDALDatasetH hTmpDS = GDALApplyVerticalShiftGrid(
hWrkSrcDS, hGridDataset, FALSE,
dfToMeterSrc, 1.0, papszOptions );
GDALReleaseDataset(hGridDataset);
if( hTmpDS == nullptr )
{
bErrorOccurredOut = true;
CSLDestroy(papszOptions);
return hWrkSrcDS;
}
else
{
if( hVRTDS )
{
VRTWarpedDataset* poVRTDS =
reinterpret_cast<VRTWarpedDataset*>(hVRTDS);
poVRTDS->SetApplyVerticalShiftGrid(
pszSrcProj4Geoids,
false,
dfToMeterSrc, 1.0, papszOptions );
}
CPLDebug("GDALWARP", "Adjusting source dataset "
"with source vertical datum using %s",
pszSrcProj4Geoids);
GDALReleaseDataset(hWrkSrcDS);
hWrkSrcDS = hTmpDS;
dfToMeterSrc = 1.0;
}
}
}
if( pszDstProj4Geoids != nullptr )
{
int bError = FALSE;
GDALDatasetH hGridDataset =
GDALOpenVerticalShiftGrid(pszDstProj4Geoids, &bError);
if( bError && hGridDataset == nullptr )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot open %s.", pszDstProj4Geoids);
bErrorOccurredOut = true;
CSLDestroy(papszOptions);
return hWrkSrcDS;
}
else if( hGridDataset != nullptr )
{
// Transform from WGS84 to target vertical datum
GDALDatasetH hTmpDS = GDALApplyVerticalShiftGrid(
hWrkSrcDS, hGridDataset, TRUE,
dfToMeterSrc, dfToMeterDst, papszOptions );
GDALReleaseDataset(hGridDataset);
if( hTmpDS == nullptr )
{
bErrorOccurredOut = true;
CSLDestroy(papszOptions);
return hWrkSrcDS;
}
else
{
if( hVRTDS )
{
VRTWarpedDataset* poVRTDS =
reinterpret_cast<VRTWarpedDataset*>(hVRTDS);
poVRTDS->SetApplyVerticalShiftGrid(
pszDstProj4Geoids,
true,
dfToMeterSrc, dfToMeterDst, papszOptions );
}
CPLDebug("GDALWARP", "Adjusting source dataset "
"with target vertical datum using %s",
pszDstProj4Geoids);
GDALReleaseDataset(hWrkSrcDS);
hWrkSrcDS = hTmpDS;
}
}
}
CSLDestroy(papszOptions);
}
}
return hWrkSrcDS;
}
/************************************************************************/
/* CanUseBuildVRT() */
/************************************************************************/
static bool CanUseBuildVRT(int nSrcCount,
GDALDatasetH *pahSrcDS)
{
bool bCanUseBuildVRT = true;
std::vector<std::array<double, 4>> aoExtents;
bool bSrcHasAlpha = false;
int nPrevBandCount = 0;
OGRSpatialReference oSRSPrev;
double dfLastResX = 0;
double dfLastResY = 0;
for(int i = 0; i < nSrcCount; i++ )
{
double adfGT[6];
auto hSrcDS = pahSrcDS[i];
if( EQUAL(GDALGetDescription(hSrcDS), "") )
{
bCanUseBuildVRT = false;
break;
}
if( GDALGetGeoTransform(hSrcDS, adfGT) != CE_None ||
adfGT[2] != 0 || adfGT[4] != 0 || adfGT[5] > 0 )
{
bCanUseBuildVRT = false;
break;
}
const double dfMinX = adfGT[0];
const double dfMinY = adfGT[3] + GDALGetRasterYSize(hSrcDS) * adfGT[5];
const double dfMaxX = adfGT[0] + GDALGetRasterXSize(hSrcDS) * adfGT[1];
const double dfMaxY = adfGT[3];
const int nBands = GDALGetRasterCount(hSrcDS);
if( nBands > 1 && GDALGetRasterColorInterpretation(
GDALGetRasterBand(hSrcDS, nBands)) == GCI_AlphaBand )
{
bSrcHasAlpha = true;
}
aoExtents.emplace_back(
std::array<double,4>{{dfMinX, dfMinY, dfMaxX, dfMaxY}});
const auto poSRS = GDALDataset::FromHandle(hSrcDS)->GetSpatialRef();
if( i == 0 )
{
nPrevBandCount = nBands;
if( poSRS )
oSRSPrev = *poSRS;
dfLastResX = adfGT[1];
dfLastResY = adfGT[5];
}
else
{
if ( nPrevBandCount != nBands )
{
bCanUseBuildVRT = false;
break;
}
if( poSRS == nullptr && !oSRSPrev.IsEmpty())
{
bCanUseBuildVRT = false;
break;
}
if( poSRS != nullptr && (oSRSPrev.IsEmpty() ||
!poSRS->IsSame(&oSRSPrev)) )
{
bCanUseBuildVRT = false;
break;
}
if( dfLastResX != adfGT[1] || dfLastResY != adfGT[5] )
{
bCanUseBuildVRT = false;
break;
}
}
}
if( bSrcHasAlpha && bCanUseBuildVRT )
{
// Quadratic performance loop. If that happens to be an issue,
// we might need to build a quad tree
for(size_t i = 0; i < aoExtents.size(); i++ )
{
const double dfMinX = aoExtents[i][0];
const double dfMinY = aoExtents[i][1];
const double dfMaxX = aoExtents[i][2];
const double dfMaxY = aoExtents[i][3];
for(size_t j = i + 1; j < aoExtents.size(); j++ )
{
const double dfOtherMinX = aoExtents[j][0];
const double dfOtherMinY = aoExtents[j][1];
const double dfOtherMaxX = aoExtents[j][2];
const double dfOtherMaxY = aoExtents[j][3];
if( dfMinX < dfOtherMaxX &&
dfOtherMinX < dfMaxX &&
dfMinY < dfOtherMaxY &&
dfOtherMinY < dfMaxY )
{
bCanUseBuildVRT = false;
break;
}
}
if( !bCanUseBuildVRT )
break;
}
}
return bCanUseBuildVRT;
}
/************************************************************************/
/* DealWithCOGOptions() */
/************************************************************************/
static
bool DealWithCOGOptions(CPLStringList& aosCreateOptions,
int nSrcCount, GDALDatasetH *pahSrcDS,
GDALWarpAppOptions* psOptions)
{
auto psOptionsTemp = GDALWarpAppOptionsClone(psOptions);
psOptionsTemp->bQuiet = true;
CPLString osTmpFilename;
osTmpFilename.Printf("/vsimem/gdalwarp/%p.tif", psOptionsTemp);
CPLStringList aosTmpGTiffCreateOptions;
aosTmpGTiffCreateOptions.SetNameValue("SPARSE_OK", "YES");
aosTmpGTiffCreateOptions.SetNameValue("TILED", "YES");
aosTmpGTiffCreateOptions.SetNameValue("BLOCKXSIZE", "4096");
aosTmpGTiffCreateOptions.SetNameValue("BLOCKYSIZE", "4096");
auto hTmpDS = GDALWarpCreateOutput( nSrcCount, pahSrcDS,
osTmpFilename, "GTiff",
psOptionsTemp->papszTO,
aosTmpGTiffCreateOptions.List(),
psOptionsTemp->eOutputType, nullptr,
false,
psOptionsTemp);
GDALWarpAppOptionsFree(psOptionsTemp);
if( hTmpDS == nullptr)
{
return false;
}
CPLString osResampling;
CPLString osTargetSRS;
int nXSize = 0;
int nYSize = 0;
double dfMinX = 0;
double dfMinY = 0;
double dfMaxX = 0;
double dfMaxY = 0;
if( psOptions->dfMinX == 0 &&
psOptions->dfMinY == 0 &&
psOptions->dfMaxX == 0 &&
psOptions->dfMaxY == 0 &&
psOptions->dfXRes == 0 &&
psOptions->dfYRes == 0 &&
psOptions->nForcePixels == 0 &&
psOptions->nForceLines == 0 &&
COGGetWarpingCharacteristics(GDALDataset::FromHandle(hTmpDS),
aosCreateOptions.List(),
osResampling,
osTargetSRS,
nXSize, nYSize,
dfMinX, dfMinY, dfMaxX, dfMaxY) )
{
GetResampleAlg(osResampling, psOptions->eResampleAlg);
psOptions->papszTO = CSLSetNameValue( psOptions->papszTO, "DST_SRS", osTargetSRS );
psOptions->dfMinX = dfMinX;
psOptions->dfMinY = dfMinY;
psOptions->dfMaxX = dfMaxX;
psOptions->dfMaxY = dfMaxY;
psOptions->nForcePixels = nXSize;
psOptions->nForceLines = nYSize;
COGRemoveWarpingOptions(aosCreateOptions);
}
GDALClose(hTmpDS);
VSIUnlink(osTmpFilename);
return true;
}
/************************************************************************/
/* GDALWarpIndirect() */
/************************************************************************/
static
GDALDatasetH GDALWarpDirect( const char *pszDest, GDALDatasetH hDstDS,
int nSrcCount,
GDALDatasetH *pahSrcDS,
GDALWarpAppOptions* psOptions,
int *pbUsageError );
static int CPL_STDCALL myScaledProgress( double dfProgress,
const char *,
void* pProgressData)
{
return GDALScaledProgress(dfProgress, nullptr, pProgressData);
}
static
GDALDatasetH GDALWarpIndirect( const char *pszDest,
GDALDriverH hDriver,
int nSrcCount,
GDALDatasetH *pahSrcDS,
GDALWarpAppOptions* psOptions,
int *pbUsageError )
{
CPLStringList aosCreateOptions(psOptions->papszCreateOptions);
psOptions->papszCreateOptions = nullptr;
if( nSrcCount == 1 &&
!(EQUAL(psOptions->pszFormat, "COG") &&
COGHasWarpingOptions(aosCreateOptions.List())) )
{
CPLString osOutputFormat(psOptions->pszFormat);
CPLFree(psOptions->pszFormat);
psOptions->pszFormat = CPLStrdup("VRT");
auto pfnProgress = psOptions->pfnProgress;
psOptions->pfnProgress = GDALDummyProgress;
auto pProgressData = psOptions->pProgressData;
psOptions->pProgressData = nullptr;
auto hTmpDS = GDALWarpDirect("", nullptr,
nSrcCount, pahSrcDS,
psOptions, pbUsageError);
if( hTmpDS )
{
auto hRet = GDALCreateCopy( hDriver, pszDest, hTmpDS,
FALSE,
aosCreateOptions.List(),
pfnProgress,