/
gdalwarp_lib.cpp
5171 lines (4675 loc) · 209 KB
/
gdalwarp_lib.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/******************************************************************************
*
* 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 <set>
#include <utility>
#include <vector>
// Suppress deprecation warning for GDALOpenVerticalShiftGrid and GDALApplyVerticalShiftGrid
#define CPL_WARN_DEPRECATED_GDALOpenVerticalShiftGrid(x)
#define CPL_WARN_DEPRECATED_GDALApplyVerticalShiftGrid(x)
#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 "ogr_proj_p.h"
#include "vrtdataset.h"
#include "../frmts/gtiff/cogdriver.h"
#if PROJ_VERSION_MAJOR > 6 || PROJ_VERSION_MINOR >= 3
#define USE_PROJ_BASED_VERTICAL_SHIFT_METHOD
#endif
// those values shouldn't be changed, because overview levels >= 0 are meant
// to be overview indices, and ovr_level < OVR_LEVEL_AUTO mean overview level
// automatically selected minus (OVR_LEVEL_AUTO - ovr_level)
constexpr int OVR_LEVEL_AUTO = -2;
constexpr int OVR_LEVEL_NONE = -1;
/************************************************************************/
/* 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, sum */
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 enable vertical shift adjustment */
bool bVShift;
/*! Whether to disable vertical shift adjustment */
bool bNoVShift;
};
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, CSLConstList 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 );
const char* pszGeolocationDataset = CSLFetchNameValueDef(papszTO,
"SRC_GEOLOC_ARRAY", CSLFetchNameValue(papszTO, "GEOLOC_ARRAY"));
if( pszGeolocationDataset != nullptr &&
(pszMethod == nullptr || EQUAL(pszMethod,"GEOLOC_ARRAY")) )
{
auto aosMD = GDALCreateGeolocationMetadata( hDS,
pszGeolocationDataset,
true );
pszProjection = aosMD.FetchNameValue("SRS");
if( pszProjection )
return pszProjection; // return in this scope so that aosMD is still valid
}
else 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 );
// Do not use a smaller epsilon, otherwise it could cause useless
// segmentization (https://github.com/OSGeo/gdal/issues/4826)
constexpr double epsilon = 1e-10;
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;
}
#ifdef USE_PROJ_BASED_VERTICAL_SHIFT_METHOD
static bool MustApplyVerticalShift( GDALDatasetH hWrkSrcDS,
const GDALWarpAppOptions* psOptions,
OGRSpatialReference& oSRSSrc,
OGRSpatialReference& oSRSDst,
bool& bSrcHasVertAxis,
bool& bDstHasVertAxis )
{
bool bApplyVShift = psOptions->bVShift;
// Check if we must do vertical shift grid transform
const char* pszSrcWKT = CSLFetchNameValue(psOptions->papszTO, "SRC_SRS");
if( pszSrcWKT )
oSRSSrc.SetFromUserInput( pszSrcWKT );
else
{
auto hSRS = GDALGetSpatialRef(hWrkSrcDS);
if( hSRS )
oSRSSrc = *(OGRSpatialReference::FromHandle(hSRS));
else
return false;
}
const char* pszDstWKT = CSLFetchNameValue( psOptions->papszTO, "DST_SRS" );
if( pszDstWKT )
oSRSDst.SetFromUserInput( pszDstWKT );
else
return false;
if( oSRSSrc.IsSame(&oSRSDst) )
return false;
bSrcHasVertAxis =
oSRSSrc.IsCompound() ||
((oSRSSrc.IsProjected() || oSRSSrc.IsGeographic()) && oSRSSrc.GetAxesCount() == 3);
bDstHasVertAxis =
oSRSDst.IsCompound() ||
((oSRSDst.IsProjected() || oSRSDst.IsGeographic()) && oSRSDst.GetAxesCount() == 3);
if( (GDALGetRasterCount(hWrkSrcDS) == 1 || psOptions->bVShift) &&
(bSrcHasVertAxis || bDstHasVertAxis) )
{
bApplyVShift = true;
}
return bApplyVShift;
}
/************************************************************************/
/* ApplyVerticalShift() */
/************************************************************************/
static bool ApplyVerticalShift( GDALDatasetH hWrkSrcDS,
const GDALWarpAppOptions* psOptions,
GDALWarpOptions *psWO )
{
if( psOptions->bVShift )
{
psWO->papszWarpOptions = CSLSetNameValue(psWO->papszWarpOptions,
"APPLY_VERTICAL_SHIFT",
"YES");
}
OGRSpatialReference oSRSSrc;
OGRSpatialReference oSRSDst;
bool bSrcHasVertAxis = false;
bool bDstHasVertAxis = false;
bool bApplyVShift = MustApplyVerticalShift( hWrkSrcDS, psOptions,
oSRSSrc, oSRSDst,
bSrcHasVertAxis,
bDstHasVertAxis );
if( (GDALGetRasterCount(hWrkSrcDS) == 1 || psOptions->bVShift) &&
(bSrcHasVertAxis || bDstHasVertAxis) )
{
bApplyVShift = true;
psWO->papszWarpOptions = CSLSetNameValue(psWO->papszWarpOptions,
"APPLY_VERTICAL_SHIFT",
"YES");
if( CSLFetchNameValue(psWO->papszWarpOptions,
"MULT_FACTOR_VERTICAL_SHIFT") == nullptr )
{
// Select how to go from input dataset units to meters
double dfToMeterSrc = 1.0;
const char* pszUnit =
GDALGetRasterUnitType( GDALGetRasterBand(hWrkSrcDS, 1) );
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, "US survey foot")) )
{
dfToMeterSrc = CPLAtof(SRS_UL_US_FOOT_CONV);
}
else if( pszUnit && !EQUAL(pszUnit, "") )
{
if( bSrcHasVertAxis )
{
oSRSSrc.GetAxis(nullptr, 2, nullptr, &dfToMeterSrc);
CPLError(CE_Warning, CPLE_AppDefined,
"Unknown units=%s. Using source vertical units.",
pszUnit);
}
else
{
CPLError(CE_Warning, CPLE_AppDefined,
"Unknown units=%s. Assuming metre.", pszUnit);
}
}
else
{
if( bSrcHasVertAxis )
oSRSSrc.GetAxis(nullptr, 2, nullptr, &dfToMeterSrc);
}
double dfToMeterDst = 1.0;
if( bDstHasVertAxis )
oSRSDst.GetAxis(nullptr, 2, nullptr, &dfToMeterDst);
if( dfToMeterSrc > 0 && dfToMeterDst > 0 )
{
const double dfMultFactorVerticalShift = dfToMeterSrc / dfToMeterDst;
CPLDebug("WARP", "Applying MULT_FACTOR_VERTICAL_SHIFT=%.18g",
dfMultFactorVerticalShift);
psWO->papszWarpOptions = CSLSetNameValue(
psWO->papszWarpOptions, "MULT_FACTOR_VERTICAL_SHIFT",
CPLSPrintf("%.18g", dfMultFactorVerticalShift));
}
}
}
return bApplyVShift;
}
#else
/************************************************************************/
/* 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() || (oSRSSrc.IsGeographic() && oSRSSrc.GetAxesCount() == 3)) ||
(oSRSDst.IsCompound() || (oSRSDst.IsGeographic() && oSRSDst.GetAxesCount() == 3)) )
{
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, "US survey foot")) )
{
dfToMeterSrc = CPLAtof(SRS_UL_US_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 )
{
CPLError(CE_Failure, CPLE_NotSupported,
"Warping to VRT with vertical transformation not supported with PROJ < 6.3");
bErrorOccurredOut = true;
CSLDestroy(papszOptions);
return hWrkSrcDS;
}
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 )
{
CPLError(CE_Failure, CPLE_NotSupported,
"Warping to VRT with vertical transformation not supported with PROJ < 6.3");
bErrorOccurredOut = true;
CSLDestroy(papszOptions);
return hWrkSrcDS;
}
CPLDebug("GDALWARP", "Adjusting source dataset "
"with target vertical datum using %s",
pszDstProj4Geoids);
GDALReleaseDataset(hWrkSrcDS);
hWrkSrcDS = hTmpDS;
}
}
}
CSLDestroy(papszOptions);
}
}
return hWrkSrcDS;
}
#endif
/************************************************************************/
/* 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;