Line data Source code
1 : /******************************************************************************
2 : *
3 : * Project: GDAL Core
4 : * Purpose: Contains default implementation of GDALRasterBand::IRasterIO()
5 : * and supporting functions of broader utility.
6 : * Author: Frank Warmerdam, warmerdam@pobox.com
7 : *
8 : ******************************************************************************
9 : * Copyright (c) 1998, Frank Warmerdam
10 : * Copyright (c) 2007-2014, Even Rouault <even dot rouault at spatialys.com>
11 : *
12 : * SPDX-License-Identifier: MIT
13 : ****************************************************************************/
14 :
15 : #include "cpl_port.h"
16 : #include "gdal.h"
17 : #include "gdal_priv.h"
18 :
19 : #include <cassert>
20 : #include <climits>
21 : #include <cmath>
22 : #include <cstddef>
23 : #include <cstdio>
24 : #include <cstdlib>
25 : #include <cstring>
26 :
27 : #include <algorithm>
28 : #include <limits>
29 : #include <stdexcept>
30 : #include <type_traits>
31 :
32 : #include "cpl_conv.h"
33 : #include "cpl_cpu_features.h"
34 : #include "cpl_error.h"
35 : #include "cpl_float.h"
36 : #include "cpl_progress.h"
37 : #include "cpl_string.h"
38 : #include "cpl_vsi.h"
39 : #include "gdal_priv_templates.hpp"
40 : #include "gdal_vrt.h"
41 : #include "gdalwarper.h"
42 : #include "memdataset.h"
43 : #include "vrtdataset.h"
44 :
45 : #if defined(__x86_64) || defined(_M_X64)
46 : #include <emmintrin.h>
47 : #define HAVE_SSE2
48 : #elif defined(USE_NEON_OPTIMIZATIONS)
49 : #include "include_sse2neon.h"
50 : #define HAVE_SSE2
51 : #endif
52 :
53 : #ifdef HAVE_SSSE3_AT_COMPILE_TIME
54 : #include "rasterio_ssse3.h"
55 : #ifdef __SSSE3__
56 : #include <tmmintrin.h>
57 : #endif
58 : #endif
59 :
60 : #ifdef __SSE4_1__
61 : #include <smmintrin.h>
62 : #endif
63 :
64 : #ifdef __GNUC__
65 : #define CPL_NOINLINE __attribute__((noinline))
66 : #else
67 : #define CPL_NOINLINE
68 : #endif
69 :
70 : static void GDALFastCopyByte(const GByte *CPL_RESTRICT pSrcData,
71 : int nSrcPixelStride, GByte *CPL_RESTRICT pDstData,
72 : int nDstPixelStride, GPtrDiff_t nWordCount);
73 :
74 : /************************************************************************/
75 : /* DownsamplingIntegerXFactor() */
76 : /************************************************************************/
77 :
78 : template <bool bSameDataType, int DATA_TYPE_SIZE>
79 695780 : static bool DownsamplingIntegerXFactor(
80 : GDALRasterBand *poBand, int iSrcX, int nSrcXInc, GPtrDiff_t iSrcOffsetCst,
81 : GByte *CPL_RESTRICT pabyDstData, int nPixelSpace, int nBufXSize,
82 : GDALDataType eDataType, GDALDataType eBufType, int &nStartBlockX,
83 : int nBlockXSize, GDALRasterBlock *&poBlock, int nLBlockY)
84 : {
85 695780 : const int nBandDataSize =
86 : bSameDataType ? DATA_TYPE_SIZE : GDALGetDataTypeSizeBytes(eDataType);
87 695780 : int nOuterLoopIters = nBufXSize - 1;
88 695780 : const int nIncSrcOffset = nSrcXInc * nBandDataSize;
89 : const GByte *CPL_RESTRICT pabySrcData;
90 695780 : int nEndBlockX = nBlockXSize + nStartBlockX;
91 :
92 695780 : if (iSrcX < nEndBlockX)
93 : {
94 294999 : CPLAssert(poBlock);
95 294999 : goto no_reload_block;
96 : }
97 400781 : goto reload_block;
98 :
99 : // Don't do the last iteration in the loop, as iSrcX might go beyond
100 : // nRasterXSize - 1
101 1264973 : while (--nOuterLoopIters >= 1)
102 : {
103 201834 : iSrcX += nSrcXInc;
104 201834 : pabySrcData += nIncSrcOffset;
105 201834 : pabyDstData += nPixelSpace;
106 :
107 : /* --------------------------------------------------------------------
108 : */
109 : /* Ensure we have the appropriate block loaded. */
110 : /* --------------------------------------------------------------------
111 : */
112 201834 : if (iSrcX >= nEndBlockX)
113 : {
114 201834 : reload_block:
115 : {
116 615205 : const int nLBlockX = iSrcX / nBlockXSize;
117 615205 : nStartBlockX = nLBlockX * nBlockXSize;
118 615205 : nEndBlockX = nStartBlockX + nBlockXSize;
119 :
120 615205 : if (poBlock != nullptr)
121 341376 : poBlock->DropLock();
122 :
123 615205 : poBlock = poBand->GetLockedBlockRef(nLBlockX, nLBlockY, FALSE);
124 615205 : if (poBlock == nullptr)
125 : {
126 1 : return false;
127 : }
128 : }
129 :
130 615204 : no_reload_block:
131 : const GByte *pabySrcBlock =
132 1264973 : static_cast<const GByte *>(poBlock->GetDataRef());
133 1264973 : GPtrDiff_t iSrcOffset =
134 1264973 : (iSrcX - nStartBlockX + iSrcOffsetCst) * nBandDataSize;
135 1264973 : pabySrcData = pabySrcBlock + iSrcOffset;
136 : }
137 :
138 : /* --------------------------------------------------------------------
139 : */
140 : /* Copy the maximum run of pixels. */
141 : /* --------------------------------------------------------------------
142 : */
143 :
144 1264973 : const int nIters = std::min(
145 1264973 : (nEndBlockX - iSrcX + (nSrcXInc - 1)) / nSrcXInc, nOuterLoopIters);
146 : if (bSameDataType)
147 : {
148 1264530 : memcpy(pabyDstData, pabySrcData, nBandDataSize);
149 1264530 : if (nIters > 1)
150 : {
151 : if (DATA_TYPE_SIZE == 1)
152 : {
153 326250 : pabySrcData += nIncSrcOffset;
154 326250 : pabyDstData += nPixelSpace;
155 326250 : GDALFastCopyByte(pabySrcData, nIncSrcOffset, pabyDstData,
156 326250 : nPixelSpace, nIters - 1);
157 326250 : pabySrcData +=
158 326250 : static_cast<GPtrDiff_t>(nIncSrcOffset) * (nIters - 2);
159 326250 : pabyDstData +=
160 326250 : static_cast<GPtrDiff_t>(nPixelSpace) * (nIters - 2);
161 : }
162 : else
163 : {
164 4395716 : for (int i = 0; i < nIters - 1; i++)
165 : {
166 4197550 : pabySrcData += nIncSrcOffset;
167 4197550 : pabyDstData += nPixelSpace;
168 4197550 : memcpy(pabyDstData, pabySrcData, nBandDataSize);
169 : }
170 : }
171 524420 : iSrcX += nSrcXInc * (nIters - 1);
172 524420 : nOuterLoopIters -= nIters - 1;
173 : }
174 : }
175 : else
176 : {
177 : // Type to type conversion ...
178 443 : GDALCopyWords64(pabySrcData, eDataType, nIncSrcOffset, pabyDstData,
179 443 : eBufType, nPixelSpace, std::max(1, nIters));
180 443 : if (nIters > 1)
181 : {
182 216 : pabySrcData +=
183 216 : static_cast<GPtrDiff_t>(nIncSrcOffset) * (nIters - 1);
184 216 : pabyDstData +=
185 216 : static_cast<GPtrDiff_t>(nPixelSpace) * (nIters - 1);
186 216 : iSrcX += nSrcXInc * (nIters - 1);
187 216 : nOuterLoopIters -= nIters - 1;
188 : }
189 : }
190 : }
191 :
192 : // Deal with last iteration to avoid iSrcX to go beyond nRasterXSize - 1
193 1063139 : if (nOuterLoopIters == 0)
194 : {
195 367360 : const int nRasterXSize = poBand->GetXSize();
196 367360 : iSrcX =
197 734720 : static_cast<int>(std::min(static_cast<GInt64>(iSrcX) + nSrcXInc,
198 367360 : static_cast<GInt64>(nRasterXSize - 1)));
199 367360 : pabyDstData += nPixelSpace;
200 367360 : if (iSrcX < nEndBlockX)
201 : {
202 354770 : goto no_reload_block;
203 : }
204 12590 : goto reload_block;
205 : }
206 695779 : return true;
207 : }
208 :
209 : template <class A, class B>
210 2729820 : CPL_NOSANITIZE_UNSIGNED_INT_OVERFLOW inline auto CPLUnsanitizedMul(A a, B b)
211 : {
212 2729820 : return a * b;
213 : }
214 :
215 : /************************************************************************/
216 : /* IRasterIO() */
217 : /* */
218 : /* Default internal implementation of RasterIO() ... utilizes */
219 : /* the Block access methods to satisfy the request. This would */
220 : /* normally only be overridden by formats with overviews. */
221 : /************************************************************************/
222 :
223 6117120 : CPLErr GDALRasterBand::IRasterIO(GDALRWFlag eRWFlag, int nXOff, int nYOff,
224 : int nXSize, int nYSize, void *pData,
225 : int nBufXSize, int nBufYSize,
226 : GDALDataType eBufType, GSpacing nPixelSpace,
227 : GSpacing nLineSpace,
228 : GDALRasterIOExtraArg *psExtraArg)
229 :
230 : {
231 6117120 : if (eRWFlag == GF_Write && eFlushBlockErr != CE_None)
232 : {
233 0 : CPLError(eFlushBlockErr, CPLE_AppDefined,
234 : "An error occurred while writing a dirty block "
235 : "from GDALRasterBand::IRasterIO");
236 0 : CPLErr eErr = eFlushBlockErr;
237 0 : eFlushBlockErr = CE_None;
238 0 : return eErr;
239 : }
240 6117120 : if (nBlockXSize <= 0 || nBlockYSize <= 0)
241 : {
242 25 : CPLError(CE_Failure, CPLE_AppDefined, "Invalid block size");
243 0 : return CE_Failure;
244 : }
245 :
246 6117100 : const int nBandDataSize = GDALGetDataTypeSizeBytes(eDataType);
247 6117090 : const int nBufDataSize = GDALGetDataTypeSizeBytes(eBufType);
248 6117080 : GByte dummyBlock[2] = {0, 0};
249 6117080 : GByte *pabySrcBlock =
250 : dummyBlock; /* to avoid Coverity warning about nullptr dereference */
251 6117080 : GDALRasterBlock *poBlock = nullptr;
252 6117080 : const bool bUseIntegerRequestCoords =
253 6464140 : (!psExtraArg->bFloatingPointWindowValidity ||
254 347059 : (nXOff == psExtraArg->dfXOff && nYOff == psExtraArg->dfYOff &&
255 323678 : nXSize == psExtraArg->dfXSize && nYSize == psExtraArg->dfYSize));
256 :
257 : /* ==================================================================== */
258 : /* A common case is the data requested with the destination */
259 : /* is packed, and the block width is the raster width. */
260 : /* ==================================================================== */
261 6039650 : if (nPixelSpace == nBufDataSize && nLineSpace == nPixelSpace * nXSize &&
262 3190780 : nBlockXSize == GetXSize() && nBufXSize == nXSize &&
263 12156800 : nBufYSize == nYSize && bUseIntegerRequestCoords)
264 : {
265 3078310 : CPLErr eErr = CE_None;
266 3078310 : int nLBlockY = -1;
267 :
268 9522570 : for (int iBufYOff = 0; iBufYOff < nBufYSize; iBufYOff++)
269 : {
270 6445330 : const int iSrcY = iBufYOff + nYOff;
271 :
272 6445330 : if (iSrcY < nLBlockY * nBlockYSize ||
273 6445340 : iSrcY - nBlockYSize >= nLBlockY * nBlockYSize)
274 : {
275 3335260 : nLBlockY = iSrcY / nBlockYSize;
276 3335260 : bool bJustInitialize =
277 295418 : eRWFlag == GF_Write && nXOff == 0 &&
278 3687760 : nXSize == nBlockXSize && nYOff <= nLBlockY * nBlockYSize &&
279 57080 : nYOff + nYSize - nBlockYSize >= nLBlockY * nBlockYSize;
280 :
281 : // Is this a partial tile at right and/or bottom edges of
282 : // the raster, and that is going to be completely written?
283 : // If so, do not load it from storage, but zero it so that
284 : // the content outsize of the validity area is initialized.
285 3335260 : bool bMemZeroBuffer = false;
286 295418 : if (eRWFlag == GF_Write && !bJustInitialize && nXOff == 0 &&
287 23861 : nXSize == nBlockXSize && nYOff <= nLBlockY * nBlockYSize &&
288 3630770 : nYOff + nYSize == GetYSize() &&
289 89 : nLBlockY * nBlockYSize > GetYSize() - nBlockYSize)
290 : {
291 89 : bJustInitialize = true;
292 89 : bMemZeroBuffer = true;
293 : }
294 :
295 3335260 : if (poBlock)
296 256904 : poBlock->DropLock();
297 :
298 3335260 : const GUInt32 nErrorCounter = CPLGetErrorCounter();
299 3335170 : poBlock = GetLockedBlockRef(0, nLBlockY, bJustInitialize);
300 3335360 : if (poBlock == nullptr)
301 : {
302 1078 : if (strstr(CPLGetLastErrorMsg(), "IReadBlock failed") ==
303 : nullptr)
304 : {
305 0 : CPLError(CE_Failure, CPLE_AppDefined,
306 : "GetBlockRef failed at X block offset %d, "
307 : "Y block offset %d%s",
308 : 0, nLBlockY,
309 0 : (nErrorCounter != CPLGetErrorCounter())
310 0 : ? CPLSPrintf(": %s", CPLGetLastErrorMsg())
311 : : "");
312 : }
313 1078 : eErr = CE_Failure;
314 1078 : break;
315 : }
316 :
317 3334280 : if (eRWFlag == GF_Write)
318 295418 : poBlock->MarkDirty();
319 :
320 3334280 : pabySrcBlock = static_cast<GByte *>(poBlock->GetDataRef());
321 3334260 : if (bMemZeroBuffer)
322 : {
323 89 : memset(pabySrcBlock, 0,
324 89 : static_cast<GPtrDiff_t>(nBandDataSize) *
325 89 : nBlockXSize * nBlockYSize);
326 : }
327 : }
328 :
329 6444330 : const auto nSrcByteOffset =
330 6444330 : (static_cast<GPtrDiff_t>(iSrcY - nLBlockY * nBlockYSize) *
331 6444330 : nBlockXSize +
332 6444330 : nXOff) *
333 6444330 : nBandDataSize;
334 :
335 6444330 : if (eDataType == eBufType)
336 : {
337 2810400 : if (eRWFlag == GF_Read)
338 2340510 : memcpy(static_cast<GByte *>(pData) +
339 2340510 : static_cast<GPtrDiff_t>(iBufYOff) * nLineSpace,
340 2340510 : pabySrcBlock + nSrcByteOffset,
341 : static_cast<size_t>(nLineSpace));
342 : else
343 469892 : memcpy(pabySrcBlock + nSrcByteOffset,
344 469892 : static_cast<GByte *>(pData) +
345 469892 : static_cast<GPtrDiff_t>(iBufYOff) * nLineSpace,
346 : static_cast<size_t>(nLineSpace));
347 : }
348 : else
349 : {
350 : // Type to type conversion.
351 3633920 : if (eRWFlag == GF_Read)
352 3611450 : GDALCopyWords64(
353 3611450 : pabySrcBlock + nSrcByteOffset, eDataType, nBandDataSize,
354 : static_cast<GByte *>(pData) +
355 3611450 : static_cast<GPtrDiff_t>(iBufYOff) * nLineSpace,
356 : eBufType, static_cast<int>(nPixelSpace), nBufXSize);
357 : else
358 22474 : GDALCopyWords64(static_cast<GByte *>(pData) +
359 22474 : static_cast<GPtrDiff_t>(iBufYOff) *
360 : nLineSpace,
361 : eBufType, static_cast<int>(nPixelSpace),
362 22474 : pabySrcBlock + nSrcByteOffset, eDataType,
363 : nBandDataSize, nBufXSize);
364 : }
365 :
366 6527580 : if (psExtraArg->pfnProgress != nullptr &&
367 83314 : !psExtraArg->pfnProgress(1.0 * (iBufYOff + 1) / nBufYSize, "",
368 : psExtraArg->pProgressData))
369 : {
370 5 : eErr = CE_Failure;
371 5 : break;
372 : }
373 : }
374 :
375 3078320 : if (poBlock)
376 3077320 : poBlock->DropLock();
377 :
378 3078400 : return eErr;
379 : }
380 :
381 : /* ==================================================================== */
382 : /* Do we have overviews that would be appropriate to satisfy */
383 : /* this request? */
384 : /* ==================================================================== */
385 3038790 : if ((nBufXSize < nXSize || nBufYSize < nYSize) && GetOverviewCount() > 0 &&
386 : eRWFlag == GF_Read)
387 : {
388 : GDALRasterIOExtraArg sExtraArg;
389 2967 : GDALCopyRasterIOExtraArg(&sExtraArg, psExtraArg);
390 :
391 : const int nOverview =
392 2967 : GDALBandGetBestOverviewLevel2(this, nXOff, nYOff, nXSize, nYSize,
393 : nBufXSize, nBufYSize, &sExtraArg);
394 2967 : if (nOverview >= 0)
395 : {
396 2892 : GDALRasterBand *poOverviewBand = GetOverview(nOverview);
397 2892 : if (poOverviewBand == nullptr)
398 2892 : return CE_Failure;
399 :
400 2892 : return poOverviewBand->RasterIO(
401 : eRWFlag, nXOff, nYOff, nXSize, nYSize, pData, nBufXSize,
402 2892 : nBufYSize, eBufType, nPixelSpace, nLineSpace, &sExtraArg);
403 : }
404 : }
405 :
406 847070 : if (eRWFlag == GF_Read && nBufXSize < nXSize / 100 &&
407 6 : nBufYSize < nYSize / 100 && nPixelSpace == nBufDataSize &&
408 3882910 : nLineSpace == nPixelSpace * nBufXSize &&
409 6 : CPLTestBool(CPLGetConfigOption("GDAL_NO_COSTLY_OVERVIEW", "NO")))
410 : {
411 0 : memset(pData, 0, static_cast<size_t>(nLineSpace * nBufYSize));
412 0 : return CE_None;
413 : }
414 :
415 : /* ==================================================================== */
416 : /* The second case when we don't need subsample data but likely */
417 : /* need data type conversion. */
418 : /* ==================================================================== */
419 3035840 : if ( // nPixelSpace == nBufDataSize &&
420 3035840 : nXSize == nBufXSize && nYSize == nBufYSize && bUseIntegerRequestCoords)
421 : {
422 : #if DEBUG_VERBOSE
423 : printf("IRasterIO(%d,%d,%d,%d) rw=%d case 2\n", /*ok*/
424 : nXOff, nYOff, nXSize, nYSize, static_cast<int>(eRWFlag));
425 : #endif
426 :
427 : /* --------------------------------------------------------------------
428 : */
429 : /* Loop over buffer computing source locations. */
430 : /* --------------------------------------------------------------------
431 : */
432 : // Calculate starting values out of loop
433 2470240 : const int nLBlockXStart = nXOff / nBlockXSize;
434 2470240 : const int nXSpanEnd = nBufXSize + nXOff;
435 :
436 2470240 : int nYInc = 0;
437 4979680 : for (int iBufYOff = 0, iSrcY = nYOff; iBufYOff < nBufYSize;
438 2509440 : iBufYOff += nYInc, iSrcY += nYInc)
439 : {
440 2509510 : GPtrDiff_t iBufOffset = static_cast<GPtrDiff_t>(iBufYOff) *
441 : static_cast<GPtrDiff_t>(nLineSpace);
442 2509510 : int nLBlockY = iSrcY / nBlockYSize;
443 2509510 : int nLBlockX = nLBlockXStart;
444 2509510 : int iSrcX = nXOff;
445 5239270 : while (iSrcX < nXSpanEnd)
446 : {
447 2729820 : int nXSpan = nLBlockX * nBlockXSize;
448 2729820 : if (nXSpan < INT_MAX - nBlockXSize)
449 2729810 : nXSpan += nBlockXSize;
450 : else
451 13 : nXSpan = INT_MAX;
452 2729820 : const int nXRight = nXSpan;
453 2729820 : nXSpan = (nXSpan < nXSpanEnd ? nXSpan : nXSpanEnd) - iSrcX;
454 :
455 : const size_t nXSpanSize =
456 2729820 : CPLUnsanitizedMul(nXSpan, static_cast<size_t>(nPixelSpace));
457 :
458 2729810 : bool bJustInitialize =
459 2042250 : eRWFlag == GF_Write && nYOff <= nLBlockY * nBlockYSize &&
460 37308 : nYOff + nYSize - nBlockYSize >= nLBlockY * nBlockYSize &&
461 4797690 : nXOff <= nLBlockX * nBlockXSize &&
462 25632 : nXOff + nXSize >= nXRight;
463 :
464 : // Is this a partial tile at right and/or bottom edges of
465 : // the raster, and that is going to be completely written?
466 : // If so, do not load it from storage, but zero it so that
467 : // the content outsize of the validity area is initialized.
468 2729810 : bool bMemZeroBuffer = false;
469 2042250 : if (eRWFlag == GF_Write && !bJustInitialize &&
470 2017850 : nXOff <= nLBlockX * nBlockXSize &&
471 2016200 : nYOff <= nLBlockY * nBlockYSize &&
472 12152 : (nXOff + nXSize >= nXRight ||
473 : // cppcheck-suppress knownConditionTrueFalse
474 4774770 : (nXOff + nXSize == GetXSize() && nXRight > GetXSize())) &&
475 11972 : (nYOff + nYSize - nBlockYSize >= nLBlockY * nBlockYSize ||
476 10750 : (nYOff + nYSize == GetYSize() &&
477 1958 : nLBlockY * nBlockYSize > GetYSize() - nBlockYSize)))
478 : {
479 3180 : bJustInitialize = true;
480 3180 : bMemZeroBuffer = true;
481 : }
482 :
483 : /* --------------------------------------------------------------------
484 : */
485 : /* Ensure we have the appropriate block loaded. */
486 : /* --------------------------------------------------------------------
487 : */
488 2729810 : const GUInt32 nErrorCounter = CPLGetErrorCounter();
489 2729840 : poBlock =
490 2729800 : GetLockedBlockRef(nLBlockX, nLBlockY, bJustInitialize);
491 2729840 : if (!poBlock)
492 : {
493 71 : if (strstr(CPLGetLastErrorMsg(), "IReadBlock failed") ==
494 : nullptr)
495 : {
496 0 : CPLError(CE_Failure, CPLE_AppDefined,
497 : "GetBlockRef failed at X block offset %d, "
498 : "Y block offset %d%s",
499 : nLBlockX, nLBlockY,
500 0 : (nErrorCounter != CPLGetErrorCounter())
501 0 : ? CPLSPrintf(": %s", CPLGetLastErrorMsg())
502 : : "");
503 : }
504 71 : return (CE_Failure);
505 : }
506 :
507 2729770 : if (eRWFlag == GF_Write)
508 2042250 : poBlock->MarkDirty();
509 :
510 2729760 : pabySrcBlock = static_cast<GByte *>(poBlock->GetDataRef());
511 2729760 : if (bMemZeroBuffer)
512 : {
513 3180 : memset(pabySrcBlock, 0,
514 3180 : static_cast<GPtrDiff_t>(nBandDataSize) *
515 3180 : nBlockXSize * nBlockYSize);
516 : }
517 : /* --------------------------------------------------------------------
518 : */
519 : /* Copy over this chunk of data. */
520 : /* --------------------------------------------------------------------
521 : */
522 2729760 : GPtrDiff_t iSrcOffset =
523 2729760 : (static_cast<GPtrDiff_t>(iSrcX) -
524 2729760 : static_cast<GPtrDiff_t>(nLBlockX * nBlockXSize) +
525 2729760 : (static_cast<GPtrDiff_t>(iSrcY) -
526 2729760 : static_cast<GPtrDiff_t>(nLBlockY) * nBlockYSize) *
527 2729760 : nBlockXSize) *
528 2729760 : nBandDataSize;
529 : // Fill up as many rows as possible for the loaded block.
530 5459530 : const int kmax = std::min(nBlockYSize - (iSrcY % nBlockYSize),
531 2729760 : nBufYSize - iBufYOff);
532 59506200 : for (int k = 0; k < kmax; k++)
533 : {
534 56776400 : if (eDataType == eBufType && nPixelSpace == nBufDataSize)
535 : {
536 52841600 : if (eRWFlag == GF_Read)
537 48408300 : memcpy(static_cast<GByte *>(pData) + iBufOffset +
538 48408300 : static_cast<GPtrDiff_t>(k) * nLineSpace,
539 48408300 : pabySrcBlock + iSrcOffset, nXSpanSize);
540 : else
541 4433360 : memcpy(pabySrcBlock + iSrcOffset,
542 4433360 : static_cast<GByte *>(pData) + iBufOffset +
543 4433360 : static_cast<GPtrDiff_t>(k) * nLineSpace,
544 : nXSpanSize);
545 : }
546 : else
547 : {
548 : /* type to type conversion */
549 3934780 : if (eRWFlag == GF_Read)
550 3884920 : GDALCopyWords64(
551 3884920 : pabySrcBlock + iSrcOffset, eDataType,
552 : nBandDataSize,
553 3884920 : static_cast<GByte *>(pData) + iBufOffset +
554 3884920 : static_cast<GPtrDiff_t>(k) * nLineSpace,
555 : eBufType, static_cast<int>(nPixelSpace),
556 : nXSpan);
557 : else
558 49861 : GDALCopyWords64(
559 49861 : static_cast<GByte *>(pData) + iBufOffset +
560 49861 : static_cast<GPtrDiff_t>(k) * nLineSpace,
561 : eBufType, static_cast<int>(nPixelSpace),
562 49861 : pabySrcBlock + iSrcOffset, eDataType,
563 : nBandDataSize, nXSpan);
564 : }
565 :
566 56776400 : iSrcOffset +=
567 56776400 : static_cast<GPtrDiff_t>(nBlockXSize) * nBandDataSize;
568 : }
569 :
570 : iBufOffset =
571 2729760 : CPLUnsanitizedAdd<GPtrDiff_t>(iBufOffset, nXSpanSize);
572 2729760 : nLBlockX++;
573 2729760 : iSrcX += nXSpan;
574 :
575 2729760 : poBlock->DropLock();
576 2729760 : poBlock = nullptr;
577 : }
578 :
579 : /* Compute the increment to go on a block boundary */
580 2509450 : nYInc = nBlockYSize - (iSrcY % nBlockYSize);
581 :
582 2511300 : if (psExtraArg->pfnProgress != nullptr &&
583 1855 : !psExtraArg->pfnProgress(
584 2511300 : 1.0 * std::min(nBufYSize, iBufYOff + nYInc) / nBufYSize, "",
585 : psExtraArg->pProgressData))
586 : {
587 5 : return CE_Failure;
588 : }
589 : }
590 :
591 2470170 : return CE_None;
592 : }
593 :
594 : /* ==================================================================== */
595 : /* Loop reading required source blocks to satisfy output */
596 : /* request. This is the most general implementation. */
597 : /* ==================================================================== */
598 :
599 565595 : double dfXOff = nXOff;
600 565595 : double dfYOff = nYOff;
601 565595 : double dfXSize = nXSize;
602 565595 : double dfYSize = nYSize;
603 565595 : if (psExtraArg->bFloatingPointWindowValidity)
604 : {
605 230598 : dfXOff = psExtraArg->dfXOff;
606 230598 : dfYOff = psExtraArg->dfYOff;
607 230598 : dfXSize = psExtraArg->dfXSize;
608 230598 : dfYSize = psExtraArg->dfYSize;
609 : }
610 :
611 : /* -------------------------------------------------------------------- */
612 : /* Compute stepping increment. */
613 : /* -------------------------------------------------------------------- */
614 565595 : const double dfSrcXInc = dfXSize / static_cast<double>(nBufXSize);
615 565595 : const double dfSrcYInc = dfYSize / static_cast<double>(nBufYSize);
616 565595 : CPLErr eErr = CE_None;
617 :
618 565595 : if (eRWFlag == GF_Write)
619 : {
620 : /* --------------------------------------------------------------------
621 : */
622 : /* Write case */
623 : /* Loop over raster window computing source locations in the buffer.
624 : */
625 : /* --------------------------------------------------------------------
626 : */
627 166655 : GByte *pabyDstBlock = nullptr;
628 166655 : int nLBlockX = -1;
629 166655 : int nLBlockY = -1;
630 :
631 1260010 : for (int iDstY = nYOff; iDstY < nYOff + nYSize; iDstY++)
632 : {
633 1093360 : const int iBufYOff = static_cast<int>((iDstY - nYOff) / dfSrcYInc);
634 :
635 12384200 : for (int iDstX = nXOff; iDstX < nXOff + nXSize; iDstX++)
636 : {
637 11290800 : const int iBufXOff =
638 11290800 : static_cast<int>((iDstX - nXOff) / dfSrcXInc);
639 11290800 : GPtrDiff_t iBufOffset =
640 11290800 : static_cast<GPtrDiff_t>(iBufYOff) *
641 : static_cast<GPtrDiff_t>(nLineSpace) +
642 11290800 : iBufXOff * static_cast<GPtrDiff_t>(nPixelSpace);
643 :
644 : // FIXME: this code likely doesn't work if the dirty block gets
645 : // flushed to disk before being completely written.
646 : // In the meantime, bJustInitialize should probably be set to
647 : // FALSE even if it is not ideal performance wise, and for
648 : // lossy compression.
649 :
650 : /* --------------------------------------------------------------------
651 : */
652 : /* Ensure we have the appropriate block loaded. */
653 : /* --------------------------------------------------------------------
654 : */
655 11290800 : if (iDstX < nLBlockX * nBlockXSize ||
656 11041500 : iDstX - nBlockXSize >= nLBlockX * nBlockXSize ||
657 10584800 : iDstY < nLBlockY * nBlockYSize ||
658 10584800 : iDstY - nBlockYSize >= nLBlockY * nBlockYSize)
659 : {
660 738702 : nLBlockX = iDstX / nBlockXSize;
661 738702 : nLBlockY = iDstY / nBlockYSize;
662 :
663 738702 : const bool bJustInitialize =
664 1065990 : nYOff <= nLBlockY * nBlockYSize &&
665 327291 : nYOff + nYSize - nBlockYSize >=
666 327291 : nLBlockY * nBlockYSize &&
667 1116320 : nXOff <= nLBlockX * nBlockXSize &&
668 50325 : nXOff + nXSize - nBlockXSize >= nLBlockX * nBlockXSize;
669 : /*bool bMemZeroBuffer = FALSE;
670 : if( !bJustInitialize &&
671 : nXOff <= nLBlockX * nBlockXSize &&
672 : nYOff <= nLBlockY * nBlockYSize &&
673 : (nXOff + nXSize >= (nLBlockX+1) * nBlockXSize ||
674 : (nXOff + nXSize == GetXSize() &&
675 : (nLBlockX+1) * nBlockXSize > GetXSize())) &&
676 : (nYOff + nYSize >= (nLBlockY+1) * nBlockYSize ||
677 : (nYOff + nYSize == GetYSize() &&
678 : (nLBlockY+1) * nBlockYSize > GetYSize())) )
679 : {
680 : bJustInitialize = TRUE;
681 : bMemZeroBuffer = TRUE;
682 : }*/
683 738702 : if (poBlock != nullptr)
684 572047 : poBlock->DropLock();
685 :
686 738702 : poBlock =
687 738702 : GetLockedBlockRef(nLBlockX, nLBlockY, bJustInitialize);
688 738702 : if (poBlock == nullptr)
689 : {
690 0 : return (CE_Failure);
691 : }
692 :
693 738702 : poBlock->MarkDirty();
694 :
695 738702 : pabyDstBlock = static_cast<GByte *>(poBlock->GetDataRef());
696 : /*if( bMemZeroBuffer )
697 : {
698 : memset(pabyDstBlock, 0,
699 : static_cast<GPtrDiff_t>(nBandDataSize) * nBlockXSize
700 : * nBlockYSize);
701 : }*/
702 : }
703 :
704 : // To make Coverity happy. Should not happen by design.
705 11290800 : if (pabyDstBlock == nullptr)
706 : {
707 0 : CPLAssert(false);
708 : eErr = CE_Failure;
709 : break;
710 : }
711 :
712 : /* --------------------------------------------------------------------
713 : */
714 : /* Copy over this pixel of data. */
715 : /* --------------------------------------------------------------------
716 : */
717 11290800 : GPtrDiff_t iDstOffset =
718 11290800 : (static_cast<GPtrDiff_t>(iDstX) -
719 11290800 : static_cast<GPtrDiff_t>(nLBlockX) * nBlockXSize +
720 11290800 : (static_cast<GPtrDiff_t>(iDstY) -
721 11290800 : static_cast<GPtrDiff_t>(nLBlockY) * nBlockYSize) *
722 11290800 : nBlockXSize) *
723 11290800 : nBandDataSize;
724 :
725 11290800 : if (eDataType == eBufType)
726 : {
727 11287700 : memcpy(pabyDstBlock + iDstOffset,
728 11287700 : static_cast<GByte *>(pData) + iBufOffset,
729 : nBandDataSize);
730 : }
731 : else
732 : {
733 : /* type to type conversion ... ouch, this is expensive way
734 : of handling single words */
735 3096 : GDALCopyWords64(static_cast<GByte *>(pData) + iBufOffset,
736 3096 : eBufType, 0, pabyDstBlock + iDstOffset,
737 : eDataType, 0, 1);
738 : }
739 : }
740 :
741 1093360 : if (psExtraArg->pfnProgress != nullptr &&
742 0 : !psExtraArg->pfnProgress(1.0 * (iDstY - nYOff + 1) / nYSize, "",
743 : psExtraArg->pProgressData))
744 : {
745 0 : eErr = CE_Failure;
746 0 : break;
747 : }
748 : }
749 : }
750 : else
751 : {
752 398940 : if (psExtraArg->eResampleAlg != GRIORA_NearestNeighbour)
753 : {
754 9499 : if ((psExtraArg->eResampleAlg == GRIORA_Cubic ||
755 2719 : psExtraArg->eResampleAlg == GRIORA_CubicSpline ||
756 2681 : psExtraArg->eResampleAlg == GRIORA_Bilinear ||
757 6821 : psExtraArg->eResampleAlg == GRIORA_Lanczos) &&
758 3169 : GetColorTable() != nullptr)
759 : {
760 0 : CPLError(CE_Warning, CPLE_NotSupported,
761 : "Resampling method not supported on paletted band. "
762 : "Falling back to nearest neighbour");
763 : }
764 3393 : else if (psExtraArg->eResampleAlg == GRIORA_Gauss &&
765 3 : GDALDataTypeIsComplex(eDataType))
766 : {
767 0 : CPLError(CE_Warning, CPLE_NotSupported,
768 : "Resampling method not supported on complex data type "
769 : "band. Falling back to nearest neighbour");
770 : }
771 : else
772 : {
773 3390 : return RasterIOResampled(eRWFlag, nXOff, nYOff, nXSize, nYSize,
774 : pData, nBufXSize, nBufYSize, eBufType,
775 3390 : nPixelSpace, nLineSpace, psExtraArg);
776 : }
777 : }
778 :
779 395548 : int nLimitBlockY = 0;
780 395548 : const bool bByteCopy = eDataType == eBufType && nBandDataSize == 1;
781 395548 : int nStartBlockX = -nBlockXSize;
782 395548 : const double EPS = 1e-10;
783 395548 : int nLBlockY = -1;
784 395548 : const double dfSrcXStart = 0.5 * dfSrcXInc + dfXOff + EPS;
785 395548 : const bool bIntegerXFactor =
786 372870 : bUseIntegerRequestCoords &&
787 669377 : static_cast<int>(dfSrcXInc) == dfSrcXInc &&
788 273829 : static_cast<int>(dfSrcXInc) < INT_MAX / nBandDataSize;
789 :
790 : /* --------------------------------------------------------------------
791 : */
792 : /* Read case */
793 : /* Loop over buffer computing source locations. */
794 : /* --------------------------------------------------------------------
795 : */
796 2457760 : for (int iBufYOff = 0; iBufYOff < nBufYSize; iBufYOff++)
797 : {
798 : // Add small epsilon to avoid some numeric precision issues.
799 2062220 : const double dfSrcY = (iBufYOff + 0.5) * dfSrcYInc + dfYOff + EPS;
800 2062220 : const int iSrcY = static_cast<int>(std::min(
801 2062220 : std::max(0.0, dfSrcY), static_cast<double>(nRasterYSize - 1)));
802 :
803 2062220 : GPtrDiff_t iBufOffset = static_cast<GPtrDiff_t>(iBufYOff) *
804 : static_cast<GPtrDiff_t>(nLineSpace);
805 :
806 2062220 : if (iSrcY >= nLimitBlockY)
807 : {
808 433795 : nLBlockY = iSrcY / nBlockYSize;
809 433795 : nLimitBlockY = nLBlockY * nBlockYSize;
810 433795 : if (nLimitBlockY < INT_MAX - nBlockYSize)
811 433795 : nLimitBlockY += nBlockYSize;
812 : else
813 0 : nLimitBlockY = INT_MAX;
814 : // Make sure a new block is loaded.
815 433795 : nStartBlockX = -nBlockXSize;
816 : }
817 1628430 : else if (static_cast<int>(dfSrcXStart) < nStartBlockX)
818 : {
819 : // Make sure a new block is loaded.
820 441987 : nStartBlockX = -nBlockXSize;
821 : }
822 :
823 2062220 : GPtrDiff_t iSrcOffsetCst = (iSrcY - nLBlockY * nBlockYSize) *
824 2062220 : static_cast<GPtrDiff_t>(nBlockXSize);
825 :
826 2062220 : if (bIntegerXFactor)
827 : {
828 695780 : int iSrcX = static_cast<int>(dfSrcXStart);
829 695780 : const int nSrcXInc = static_cast<int>(dfSrcXInc);
830 695780 : GByte *pabyDstData = static_cast<GByte *>(pData) + iBufOffset;
831 695780 : bool bRet = false;
832 695780 : if (bByteCopy)
833 : {
834 585773 : bRet = DownsamplingIntegerXFactor<true, 1>(
835 : this, iSrcX, nSrcXInc, iSrcOffsetCst, pabyDstData,
836 : static_cast<int>(nPixelSpace), nBufXSize, GDT_Byte,
837 : GDT_Byte, nStartBlockX, nBlockXSize, poBlock, nLBlockY);
838 : }
839 110007 : else if (eDataType == eBufType)
840 : {
841 109782 : switch (nBandDataSize)
842 : {
843 109630 : case 2:
844 109630 : bRet = DownsamplingIntegerXFactor<true, 2>(
845 : this, iSrcX, nSrcXInc, iSrcOffsetCst,
846 : pabyDstData, static_cast<int>(nPixelSpace),
847 : nBufXSize, eDataType, eDataType, nStartBlockX,
848 : nBlockXSize, poBlock, nLBlockY);
849 109630 : break;
850 54 : case 4:
851 54 : bRet = DownsamplingIntegerXFactor<true, 4>(
852 : this, iSrcX, nSrcXInc, iSrcOffsetCst,
853 : pabyDstData, static_cast<int>(nPixelSpace),
854 : nBufXSize, eDataType, eDataType, nStartBlockX,
855 : nBlockXSize, poBlock, nLBlockY);
856 54 : break;
857 96 : case 8:
858 96 : bRet = DownsamplingIntegerXFactor<true, 8>(
859 : this, iSrcX, nSrcXInc, iSrcOffsetCst,
860 : pabyDstData, static_cast<int>(nPixelSpace),
861 : nBufXSize, eDataType, eDataType, nStartBlockX,
862 : nBlockXSize, poBlock, nLBlockY);
863 96 : break;
864 2 : case 16:
865 2 : bRet = DownsamplingIntegerXFactor<true, 16>(
866 : this, iSrcX, nSrcXInc, iSrcOffsetCst,
867 : pabyDstData, static_cast<int>(nPixelSpace),
868 : nBufXSize, eDataType, eDataType, nStartBlockX,
869 : nBlockXSize, poBlock, nLBlockY);
870 2 : break;
871 0 : default:
872 0 : CPLAssert(false);
873 : break;
874 : }
875 : }
876 : else
877 : {
878 225 : bRet = DownsamplingIntegerXFactor<false, 0>(
879 : this, iSrcX, nSrcXInc, iSrcOffsetCst, pabyDstData,
880 : static_cast<int>(nPixelSpace), nBufXSize, eDataType,
881 : eBufType, nStartBlockX, nBlockXSize, poBlock, nLBlockY);
882 : }
883 695780 : if (!bRet)
884 1 : eErr = CE_Failure;
885 : }
886 : else
887 : {
888 1366440 : double dfSrcX = dfSrcXStart;
889 590688000 : for (int iBufXOff = 0; iBufXOff < nBufXSize;
890 589322000 : iBufXOff++, dfSrcX += dfSrcXInc)
891 : {
892 : // TODO?: try to avoid the clamping for most iterations
893 : const int iSrcX = static_cast<int>(
894 1178640000 : std::min(std::max(0.0, dfSrcX),
895 589322000 : static_cast<double>(nRasterXSize - 1)));
896 :
897 : /* --------------------------------------------------------------------
898 : */
899 : /* Ensure we have the appropriate block loaded. */
900 : /* --------------------------------------------------------------------
901 : */
902 589322000 : if (iSrcX >= nBlockXSize + nStartBlockX)
903 : {
904 1702870 : const int nLBlockX = iSrcX / nBlockXSize;
905 1702870 : nStartBlockX = nLBlockX * nBlockXSize;
906 :
907 1702870 : if (poBlock != nullptr)
908 1581150 : poBlock->DropLock();
909 :
910 1702870 : poBlock = GetLockedBlockRef(nLBlockX, nLBlockY, FALSE);
911 1702870 : if (poBlock == nullptr)
912 : {
913 9 : eErr = CE_Failure;
914 9 : break;
915 : }
916 :
917 : pabySrcBlock =
918 1702860 : static_cast<GByte *>(poBlock->GetDataRef());
919 : }
920 589322000 : const GPtrDiff_t nDiffX =
921 589322000 : static_cast<GPtrDiff_t>(iSrcX - nStartBlockX);
922 :
923 : /* --------------------------------------------------------------------
924 : */
925 : /* Copy over this pixel of data. */
926 : /* --------------------------------------------------------------------
927 : */
928 :
929 589322000 : if (bByteCopy)
930 : {
931 533523000 : GPtrDiff_t iSrcOffset = nDiffX + iSrcOffsetCst;
932 533523000 : static_cast<GByte *>(pData)[iBufOffset] =
933 533523000 : pabySrcBlock[iSrcOffset];
934 : }
935 55798800 : else if (eDataType == eBufType)
936 : {
937 50322800 : GPtrDiff_t iSrcOffset =
938 50322800 : (nDiffX + iSrcOffsetCst) * nBandDataSize;
939 50322800 : memcpy(static_cast<GByte *>(pData) + iBufOffset,
940 50322800 : pabySrcBlock + iSrcOffset, nBandDataSize);
941 : }
942 : else
943 : {
944 : // Type to type conversion ...
945 5476050 : GPtrDiff_t iSrcOffset =
946 5476050 : (nDiffX + iSrcOffsetCst) * nBandDataSize;
947 5476050 : GDALCopyWords64(pabySrcBlock + iSrcOffset, eDataType, 0,
948 : static_cast<GByte *>(pData) +
949 5476050 : iBufOffset,
950 : eBufType, 0, 1);
951 : }
952 :
953 589322000 : iBufOffset += static_cast<int>(nPixelSpace);
954 : }
955 : }
956 2062220 : if (eErr == CE_Failure)
957 11 : break;
958 :
959 2296370 : if (psExtraArg->pfnProgress != nullptr &&
960 234158 : !psExtraArg->pfnProgress(1.0 * (iBufYOff + 1) / nBufYSize, "",
961 : psExtraArg->pProgressData))
962 : {
963 1 : eErr = CE_Failure;
964 1 : break;
965 : }
966 : }
967 : }
968 :
969 562203 : if (poBlock != nullptr)
970 562193 : poBlock->DropLock();
971 :
972 562203 : return eErr;
973 : }
974 :
975 : /************************************************************************/
976 : /* GDALRasterIOTransformer() */
977 : /************************************************************************/
978 :
979 : struct GDALRasterIOTransformerStruct
980 : {
981 : double dfXOff;
982 : double dfYOff;
983 : double dfXRatioDstToSrc;
984 : double dfYRatioDstToSrc;
985 : };
986 :
987 6748 : static int GDALRasterIOTransformer(void *pTransformerArg, int bDstToSrc,
988 : int nPointCount, double *x, double *y,
989 : double * /* z */, int *panSuccess)
990 : {
991 6748 : GDALRasterIOTransformerStruct *psParams =
992 : static_cast<GDALRasterIOTransformerStruct *>(pTransformerArg);
993 6748 : if (bDstToSrc)
994 : {
995 252996 : for (int i = 0; i < nPointCount; i++)
996 : {
997 246836 : x[i] = x[i] * psParams->dfXRatioDstToSrc + psParams->dfXOff;
998 246836 : y[i] = y[i] * psParams->dfYRatioDstToSrc + psParams->dfYOff;
999 246836 : panSuccess[i] = TRUE;
1000 : }
1001 : }
1002 : else
1003 : {
1004 1176 : for (int i = 0; i < nPointCount; i++)
1005 : {
1006 588 : x[i] = (x[i] - psParams->dfXOff) / psParams->dfXRatioDstToSrc;
1007 588 : y[i] = (y[i] - psParams->dfYOff) / psParams->dfYRatioDstToSrc;
1008 588 : panSuccess[i] = TRUE;
1009 : }
1010 : }
1011 6748 : return TRUE;
1012 : }
1013 :
1014 : /************************************************************************/
1015 : /* RasterIOResampled() */
1016 : /************************************************************************/
1017 :
1018 : //! @cond Doxygen_Suppress
1019 3390 : CPLErr GDALRasterBand::RasterIOResampled(
1020 : GDALRWFlag /* eRWFlag */, int nXOff, int nYOff, int nXSize, int nYSize,
1021 : void *pData, int nBufXSize, int nBufYSize, GDALDataType eBufType,
1022 : GSpacing nPixelSpace, GSpacing nLineSpace, GDALRasterIOExtraArg *psExtraArg)
1023 : {
1024 : // Determine if we use warping resampling or overview resampling
1025 : const bool bUseWarp =
1026 3390 : (GDALDataTypeIsComplex(eDataType) &&
1027 3549 : psExtraArg->eResampleAlg != GRIORA_NearestNeighbour &&
1028 159 : psExtraArg->eResampleAlg != GRIORA_Mode);
1029 :
1030 3390 : double dfXOff = nXOff;
1031 3390 : double dfYOff = nYOff;
1032 3390 : double dfXSize = nXSize;
1033 3390 : double dfYSize = nYSize;
1034 3390 : if (psExtraArg->bFloatingPointWindowValidity)
1035 : {
1036 2695 : dfXOff = psExtraArg->dfXOff;
1037 2695 : dfYOff = psExtraArg->dfYOff;
1038 2695 : dfXSize = psExtraArg->dfXSize;
1039 2695 : dfYSize = psExtraArg->dfYSize;
1040 : }
1041 :
1042 3390 : const double dfXRatioDstToSrc = dfXSize / nBufXSize;
1043 3390 : const double dfYRatioDstToSrc = dfYSize / nBufYSize;
1044 :
1045 : // Determine the coordinates in the "virtual" output raster to see
1046 : // if there are not integers, in which case we will use them as a shift
1047 : // so that subwindow extracts give the exact same results as entire raster
1048 : // scaling.
1049 3390 : double dfDestXOff = dfXOff / dfXRatioDstToSrc;
1050 3390 : bool bHasXOffVirtual = false;
1051 3390 : int nDestXOffVirtual = 0;
1052 3390 : if (fabs(dfDestXOff - static_cast<int>(dfDestXOff + 0.5)) < 1e-8)
1053 : {
1054 3062 : bHasXOffVirtual = true;
1055 3062 : dfXOff = nXOff;
1056 3062 : nDestXOffVirtual = static_cast<int>(dfDestXOff + 0.5);
1057 : }
1058 :
1059 3390 : double dfDestYOff = dfYOff / dfYRatioDstToSrc;
1060 3390 : bool bHasYOffVirtual = false;
1061 3390 : int nDestYOffVirtual = 0;
1062 3390 : if (fabs(dfDestYOff - static_cast<int>(dfDestYOff + 0.5)) < 1e-8)
1063 : {
1064 3058 : bHasYOffVirtual = true;
1065 3058 : dfYOff = nYOff;
1066 3058 : nDestYOffVirtual = static_cast<int>(dfDestYOff + 0.5);
1067 : }
1068 :
1069 : // Create a MEM dataset that wraps the output buffer.
1070 : GDALDataset *poMEMDS;
1071 3390 : void *pTempBuffer = nullptr;
1072 3390 : GSpacing nPSMem = nPixelSpace;
1073 3390 : GSpacing nLSMem = nLineSpace;
1074 3390 : void *pDataMem = pData;
1075 3390 : GDALDataType eDTMem = eBufType;
1076 3390 : if (eBufType != eDataType)
1077 : {
1078 44 : nPSMem = GDALGetDataTypeSizeBytes(eDataType);
1079 44 : nLSMem = nPSMem * nBufXSize;
1080 : pTempBuffer =
1081 44 : VSI_MALLOC2_VERBOSE(nBufYSize, static_cast<size_t>(nLSMem));
1082 44 : if (pTempBuffer == nullptr)
1083 0 : return CE_Failure;
1084 44 : pDataMem = pTempBuffer;
1085 44 : eDTMem = eDataType;
1086 : }
1087 :
1088 : poMEMDS =
1089 3390 : MEMDataset::Create("", nDestXOffVirtual + nBufXSize,
1090 : nDestYOffVirtual + nBufYSize, 0, eDTMem, nullptr);
1091 3390 : GByte *pabyData = static_cast<GByte *>(pDataMem) -
1092 3390 : nPSMem * nDestXOffVirtual - nLSMem * nDestYOffVirtual;
1093 3390 : GDALRasterBandH hMEMBand = MEMCreateRasterBandEx(
1094 : poMEMDS, 1, pabyData, eDTMem, nPSMem, nLSMem, false);
1095 3390 : poMEMDS->SetBand(1, GDALRasterBand::FromHandle(hMEMBand));
1096 :
1097 3390 : const char *pszNBITS = GetMetadataItem("NBITS", "IMAGE_STRUCTURE");
1098 3390 : const int nNBITS = pszNBITS ? atoi(pszNBITS) : 0;
1099 3390 : if (pszNBITS)
1100 6 : GDALRasterBand::FromHandle(hMEMBand)->SetMetadataItem(
1101 6 : "NBITS", pszNBITS, "IMAGE_STRUCTURE");
1102 :
1103 3390 : CPLErr eErr = CE_None;
1104 :
1105 : // Do the resampling.
1106 3390 : if (bUseWarp)
1107 : {
1108 149 : int bHasNoData = FALSE;
1109 149 : double dfNoDataValue = GetNoDataValue(&bHasNoData);
1110 :
1111 149 : VRTDatasetH hVRTDS = nullptr;
1112 149 : GDALRasterBandH hVRTBand = nullptr;
1113 149 : if (GetDataset() == nullptr)
1114 : {
1115 : /* Create VRT dataset that wraps the whole dataset */
1116 0 : hVRTDS = VRTCreate(nRasterXSize, nRasterYSize);
1117 0 : VRTAddBand(hVRTDS, eDataType, nullptr);
1118 0 : hVRTBand = GDALGetRasterBand(hVRTDS, 1);
1119 0 : VRTAddSimpleSource(hVRTBand, this, 0, 0, nRasterXSize, nRasterYSize,
1120 : 0, 0, nRasterXSize, nRasterYSize, nullptr,
1121 : VRT_NODATA_UNSET);
1122 :
1123 : /* Add a mask band if needed */
1124 0 : if (GetMaskFlags() != GMF_ALL_VALID)
1125 : {
1126 0 : GDALDataset::FromHandle(hVRTDS)->CreateMaskBand(0);
1127 : VRTSourcedRasterBand *poVRTMaskBand =
1128 : reinterpret_cast<VRTSourcedRasterBand *>(
1129 : reinterpret_cast<GDALRasterBand *>(hVRTBand)
1130 0 : ->GetMaskBand());
1131 0 : poVRTMaskBand->AddMaskBandSource(this, 0, 0, nRasterXSize,
1132 0 : nRasterYSize, 0, 0,
1133 0 : nRasterXSize, nRasterYSize);
1134 : }
1135 : }
1136 :
1137 149 : GDALWarpOptions *psWarpOptions = GDALCreateWarpOptions();
1138 149 : switch (psExtraArg->eResampleAlg)
1139 : {
1140 0 : case GRIORA_NearestNeighbour:
1141 0 : psWarpOptions->eResampleAlg = GRA_NearestNeighbour;
1142 0 : break;
1143 147 : case GRIORA_Bilinear:
1144 147 : psWarpOptions->eResampleAlg = GRA_Bilinear;
1145 147 : break;
1146 0 : case GRIORA_Cubic:
1147 0 : psWarpOptions->eResampleAlg = GRA_Cubic;
1148 0 : break;
1149 0 : case GRIORA_CubicSpline:
1150 0 : psWarpOptions->eResampleAlg = GRA_CubicSpline;
1151 0 : break;
1152 0 : case GRIORA_Lanczos:
1153 0 : psWarpOptions->eResampleAlg = GRA_Lanczos;
1154 0 : break;
1155 0 : case GRIORA_Average:
1156 0 : psWarpOptions->eResampleAlg = GRA_Average;
1157 0 : break;
1158 2 : case GRIORA_RMS:
1159 2 : psWarpOptions->eResampleAlg = GRA_RMS;
1160 2 : break;
1161 0 : case GRIORA_Mode:
1162 0 : psWarpOptions->eResampleAlg = GRA_Mode;
1163 0 : break;
1164 0 : default:
1165 0 : CPLAssert(false);
1166 : psWarpOptions->eResampleAlg = GRA_NearestNeighbour;
1167 : break;
1168 : }
1169 149 : psWarpOptions->hSrcDS = hVRTDS ? hVRTDS : GetDataset();
1170 149 : psWarpOptions->hDstDS = poMEMDS;
1171 149 : psWarpOptions->nBandCount = 1;
1172 149 : int nSrcBandNumber = hVRTDS ? 1 : nBand;
1173 149 : int nDstBandNumber = 1;
1174 149 : psWarpOptions->panSrcBands = &nSrcBandNumber;
1175 149 : psWarpOptions->panDstBands = &nDstBandNumber;
1176 298 : psWarpOptions->pfnProgress = psExtraArg->pfnProgress
1177 149 : ? psExtraArg->pfnProgress
1178 : : GDALDummyProgress;
1179 149 : psWarpOptions->pProgressArg = psExtraArg->pProgressData;
1180 149 : psWarpOptions->pfnTransformer = GDALRasterIOTransformer;
1181 149 : if (bHasNoData)
1182 : {
1183 0 : psWarpOptions->papszWarpOptions = CSLSetNameValue(
1184 : psWarpOptions->papszWarpOptions, "INIT_DEST", "NO_DATA");
1185 0 : if (psWarpOptions->padfSrcNoDataReal == nullptr)
1186 : {
1187 0 : psWarpOptions->padfSrcNoDataReal =
1188 0 : static_cast<double *>(CPLMalloc(sizeof(double)));
1189 0 : psWarpOptions->padfSrcNoDataReal[0] = dfNoDataValue;
1190 : }
1191 :
1192 0 : if (psWarpOptions->padfDstNoDataReal == nullptr)
1193 : {
1194 0 : psWarpOptions->padfDstNoDataReal =
1195 0 : static_cast<double *>(CPLMalloc(sizeof(double)));
1196 0 : psWarpOptions->padfDstNoDataReal[0] = dfNoDataValue;
1197 : }
1198 : }
1199 :
1200 : GDALRasterIOTransformerStruct sTransformer;
1201 149 : sTransformer.dfXOff = bHasXOffVirtual ? 0 : dfXOff;
1202 149 : sTransformer.dfYOff = bHasYOffVirtual ? 0 : dfYOff;
1203 149 : sTransformer.dfXRatioDstToSrc = dfXRatioDstToSrc;
1204 149 : sTransformer.dfYRatioDstToSrc = dfYRatioDstToSrc;
1205 149 : psWarpOptions->pTransformerArg = &sTransformer;
1206 :
1207 : GDALWarpOperationH hWarpOperation =
1208 149 : GDALCreateWarpOperation(psWarpOptions);
1209 149 : eErr = GDALChunkAndWarpImage(hWarpOperation, nDestXOffVirtual,
1210 : nDestYOffVirtual, nBufXSize, nBufYSize);
1211 149 : GDALDestroyWarpOperation(hWarpOperation);
1212 :
1213 149 : psWarpOptions->panSrcBands = nullptr;
1214 149 : psWarpOptions->panDstBands = nullptr;
1215 149 : GDALDestroyWarpOptions(psWarpOptions);
1216 :
1217 149 : if (hVRTDS)
1218 0 : GDALClose(hVRTDS);
1219 : }
1220 : else
1221 : {
1222 3241 : const char *pszResampling =
1223 4210 : (psExtraArg->eResampleAlg == GRIORA_Bilinear) ? "BILINEAR"
1224 1267 : : (psExtraArg->eResampleAlg == GRIORA_Cubic) ? "CUBIC"
1225 558 : : (psExtraArg->eResampleAlg == GRIORA_CubicSpline) ? "CUBICSPLINE"
1226 479 : : (psExtraArg->eResampleAlg == GRIORA_Lanczos) ? "LANCZOS"
1227 342 : : (psExtraArg->eResampleAlg == GRIORA_Average) ? "AVERAGE"
1228 199 : : (psExtraArg->eResampleAlg == GRIORA_RMS) ? "RMS"
1229 79 : : (psExtraArg->eResampleAlg == GRIORA_Mode) ? "MODE"
1230 3 : : (psExtraArg->eResampleAlg == GRIORA_Gauss) ? "GAUSS"
1231 : : "UNKNOWN";
1232 :
1233 3241 : int nKernelRadius = 0;
1234 : GDALResampleFunction pfnResampleFunc =
1235 3241 : GDALGetResampleFunction(pszResampling, &nKernelRadius);
1236 3241 : CPLAssert(pfnResampleFunc);
1237 : GDALDataType eWrkDataType =
1238 3241 : GDALGetOvrWorkDataType(pszResampling, eDataType);
1239 3241 : int nHasNoData = 0;
1240 3241 : double dfNoDataValue = GetNoDataValue(&nHasNoData);
1241 3241 : const bool bHasNoData = CPL_TO_BOOL(nHasNoData);
1242 3241 : if (!bHasNoData)
1243 3151 : dfNoDataValue = 0.0;
1244 :
1245 3241 : int nDstBlockXSize = nBufXSize;
1246 3241 : int nDstBlockYSize = nBufYSize;
1247 3241 : int nFullResXChunk = 0;
1248 3241 : int nFullResYChunk = 0;
1249 : while (true)
1250 : {
1251 3252 : nFullResXChunk =
1252 3252 : 3 + static_cast<int>(nDstBlockXSize * dfXRatioDstToSrc);
1253 3252 : nFullResYChunk =
1254 3252 : 3 + static_cast<int>(nDstBlockYSize * dfYRatioDstToSrc);
1255 3252 : if (nFullResXChunk > nRasterXSize)
1256 2909 : nFullResXChunk = nRasterXSize;
1257 3252 : if (nFullResYChunk > nRasterYSize)
1258 510 : nFullResYChunk = nRasterYSize;
1259 3252 : if ((nDstBlockXSize == 1 && nDstBlockYSize == 1) ||
1260 3194 : (static_cast<GIntBig>(nFullResXChunk) * nFullResYChunk <=
1261 : 1024 * 1024))
1262 : break;
1263 : // When operating on the full width of a raster whose block width is
1264 : // the raster width, prefer doing chunks in height.
1265 11 : if (nFullResXChunk >= nXSize && nXSize == nBlockXSize &&
1266 : nDstBlockYSize > 1)
1267 0 : nDstBlockYSize /= 2;
1268 : /* Otherwise cut the maximal dimension */
1269 11 : else if (nDstBlockXSize > 1 &&
1270 0 : (nFullResXChunk > nFullResYChunk || nDstBlockYSize == 1))
1271 11 : nDstBlockXSize /= 2;
1272 : else
1273 0 : nDstBlockYSize /= 2;
1274 : }
1275 :
1276 3241 : int nOvrXFactor = static_cast<int>(0.5 + dfXRatioDstToSrc);
1277 3241 : int nOvrYFactor = static_cast<int>(0.5 + dfYRatioDstToSrc);
1278 3241 : if (nOvrXFactor == 0)
1279 2029 : nOvrXFactor = 1;
1280 3241 : if (nOvrYFactor == 0)
1281 2028 : nOvrYFactor = 1;
1282 3241 : int nFullResXSizeQueried =
1283 3241 : nFullResXChunk + 2 * nKernelRadius * nOvrXFactor;
1284 3241 : int nFullResYSizeQueried =
1285 3241 : nFullResYChunk + 2 * nKernelRadius * nOvrYFactor;
1286 :
1287 3241 : if (nFullResXSizeQueried > nRasterXSize)
1288 2699 : nFullResXSizeQueried = nRasterXSize;
1289 3241 : if (nFullResYSizeQueried > nRasterYSize)
1290 297 : nFullResYSizeQueried = nRasterYSize;
1291 :
1292 : void *pChunk =
1293 3241 : VSI_MALLOC3_VERBOSE(GDALGetDataTypeSizeBytes(eWrkDataType),
1294 : nFullResXSizeQueried, nFullResYSizeQueried);
1295 3241 : GByte *pabyChunkNoDataMask = nullptr;
1296 :
1297 3241 : GDALRasterBand *poMaskBand = GetMaskBand();
1298 3241 : int l_nMaskFlags = GetMaskFlags();
1299 :
1300 3241 : bool bUseNoDataMask = ((l_nMaskFlags & GMF_ALL_VALID) == 0);
1301 3241 : if (bUseNoDataMask)
1302 : {
1303 158 : pabyChunkNoDataMask = static_cast<GByte *>(VSI_MALLOC2_VERBOSE(
1304 : nFullResXSizeQueried, nFullResYSizeQueried));
1305 : }
1306 3241 : if (pChunk == nullptr ||
1307 158 : (bUseNoDataMask && pabyChunkNoDataMask == nullptr))
1308 : {
1309 0 : GDALClose(poMEMDS);
1310 0 : CPLFree(pChunk);
1311 0 : CPLFree(pabyChunkNoDataMask);
1312 0 : VSIFree(pTempBuffer);
1313 0 : return CE_Failure;
1314 : }
1315 :
1316 3241 : const int nTotalBlocks = DIV_ROUND_UP(nBufXSize, nDstBlockXSize) *
1317 3241 : DIV_ROUND_UP(nBufYSize, nDstBlockYSize);
1318 3241 : int nBlocksDone = 0;
1319 :
1320 : int nDstYOff;
1321 6482 : for (nDstYOff = 0; nDstYOff < nBufYSize && eErr == CE_None;
1322 3241 : nDstYOff += nDstBlockYSize)
1323 : {
1324 : int nDstYCount;
1325 3241 : if (nDstYOff + nDstBlockYSize <= nBufYSize)
1326 3241 : nDstYCount = nDstBlockYSize;
1327 : else
1328 0 : nDstYCount = nBufYSize - nDstYOff;
1329 :
1330 3241 : int nChunkYOff =
1331 3241 : nYOff + static_cast<int>(nDstYOff * dfYRatioDstToSrc);
1332 3241 : int nChunkYOff2 = nYOff + 1 +
1333 3241 : static_cast<int>(ceil((nDstYOff + nDstYCount) *
1334 : dfYRatioDstToSrc));
1335 3241 : if (nChunkYOff2 > nRasterYSize)
1336 652 : nChunkYOff2 = nRasterYSize;
1337 3241 : int nYCount = nChunkYOff2 - nChunkYOff;
1338 3241 : CPLAssert(nYCount <= nFullResYChunk);
1339 :
1340 3241 : int nChunkYOffQueried = nChunkYOff - nKernelRadius * nOvrYFactor;
1341 3241 : int nChunkYSizeQueried = nYCount + 2 * nKernelRadius * nOvrYFactor;
1342 3241 : if (nChunkYOffQueried < 0)
1343 : {
1344 450 : nChunkYSizeQueried += nChunkYOffQueried;
1345 450 : nChunkYOffQueried = 0;
1346 : }
1347 3241 : if (nChunkYSizeQueried + nChunkYOffQueried > nRasterYSize)
1348 553 : nChunkYSizeQueried = nRasterYSize - nChunkYOffQueried;
1349 3241 : CPLAssert(nChunkYSizeQueried <= nFullResYSizeQueried);
1350 :
1351 3241 : int nDstXOff = 0;
1352 6482 : for (nDstXOff = 0; nDstXOff < nBufXSize && eErr == CE_None;
1353 3241 : nDstXOff += nDstBlockXSize)
1354 : {
1355 3241 : int nDstXCount = 0;
1356 3241 : if (nDstXOff + nDstBlockXSize <= nBufXSize)
1357 3241 : nDstXCount = nDstBlockXSize;
1358 : else
1359 0 : nDstXCount = nBufXSize - nDstXOff;
1360 :
1361 3241 : int nChunkXOff =
1362 3241 : nXOff + static_cast<int>(nDstXOff * dfXRatioDstToSrc);
1363 3241 : int nChunkXOff2 =
1364 3241 : nXOff + 1 +
1365 3241 : static_cast<int>(
1366 3241 : ceil((nDstXOff + nDstXCount) * dfXRatioDstToSrc));
1367 3241 : if (nChunkXOff2 > nRasterXSize)
1368 2952 : nChunkXOff2 = nRasterXSize;
1369 3241 : int nXCount = nChunkXOff2 - nChunkXOff;
1370 3241 : CPLAssert(nXCount <= nFullResXChunk);
1371 :
1372 3241 : int nChunkXOffQueried =
1373 3241 : nChunkXOff - nKernelRadius * nOvrXFactor;
1374 3241 : int nChunkXSizeQueried =
1375 3241 : nXCount + 2 * nKernelRadius * nOvrXFactor;
1376 3241 : if (nChunkXOffQueried < 0)
1377 : {
1378 2754 : nChunkXSizeQueried += nChunkXOffQueried;
1379 2754 : nChunkXOffQueried = 0;
1380 : }
1381 3241 : if (nChunkXSizeQueried + nChunkXOffQueried > nRasterXSize)
1382 2740 : nChunkXSizeQueried = nRasterXSize - nChunkXOffQueried;
1383 3241 : CPLAssert(nChunkXSizeQueried <= nFullResXSizeQueried);
1384 :
1385 : // Read the source buffers.
1386 3241 : eErr = RasterIO(GF_Read, nChunkXOffQueried, nChunkYOffQueried,
1387 : nChunkXSizeQueried, nChunkYSizeQueried, pChunk,
1388 : nChunkXSizeQueried, nChunkYSizeQueried,
1389 : eWrkDataType, 0, 0, nullptr);
1390 :
1391 3241 : bool bSkipResample = false;
1392 3241 : bool bNoDataMaskFullyOpaque = false;
1393 3241 : if (eErr == CE_None && bUseNoDataMask)
1394 : {
1395 158 : eErr = poMaskBand->RasterIO(
1396 : GF_Read, nChunkXOffQueried, nChunkYOffQueried,
1397 : nChunkXSizeQueried, nChunkYSizeQueried,
1398 : pabyChunkNoDataMask, nChunkXSizeQueried,
1399 : nChunkYSizeQueried, GDT_Byte, 0, 0, nullptr);
1400 :
1401 : /* Optimizations if mask if fully opaque or transparent */
1402 158 : int nPixels = nChunkXSizeQueried * nChunkYSizeQueried;
1403 158 : GByte bVal = pabyChunkNoDataMask[0];
1404 158 : int i = 1;
1405 3751460 : for (; i < nPixels; i++)
1406 : {
1407 3751410 : if (pabyChunkNoDataMask[i] != bVal)
1408 104 : break;
1409 : }
1410 158 : if (i == nPixels)
1411 : {
1412 54 : if (bVal == 0)
1413 : {
1414 712 : for (int j = 0; j < nDstYCount; j++)
1415 : {
1416 686 : GDALCopyWords64(&dfNoDataValue, GDT_Float64, 0,
1417 : static_cast<GByte *>(pDataMem) +
1418 686 : nLSMem * (j + nDstYOff) +
1419 686 : nDstXOff * nPSMem,
1420 : eDTMem,
1421 : static_cast<int>(nPSMem),
1422 : nDstXCount);
1423 : }
1424 26 : bSkipResample = true;
1425 : }
1426 : else
1427 : {
1428 28 : bNoDataMaskFullyOpaque = true;
1429 : }
1430 : }
1431 : }
1432 :
1433 3241 : if (!bSkipResample && eErr == CE_None)
1434 : {
1435 3212 : const bool bPropagateNoData = false;
1436 3212 : void *pDstBuffer = nullptr;
1437 3212 : GDALDataType eDstBufferDataType = GDT_Unknown;
1438 : GDALRasterBand *poMEMBand =
1439 3212 : GDALRasterBand::FromHandle(hMEMBand);
1440 3212 : GDALOverviewResampleArgs args;
1441 3212 : args.eSrcDataType = eDataType;
1442 3212 : args.eOvrDataType = poMEMBand->GetRasterDataType();
1443 3212 : args.nOvrXSize = poMEMBand->GetXSize();
1444 3212 : args.nOvrYSize = poMEMBand->GetYSize();
1445 3212 : args.nOvrNBITS = nNBITS;
1446 3212 : args.dfXRatioDstToSrc = dfXRatioDstToSrc;
1447 3212 : args.dfYRatioDstToSrc = dfYRatioDstToSrc;
1448 3212 : args.dfSrcXDelta =
1449 3212 : dfXOff - nXOff; /* == 0 if bHasXOffVirtual */
1450 3212 : args.dfSrcYDelta =
1451 3212 : dfYOff - nYOff; /* == 0 if bHasYOffVirtual */
1452 3212 : args.eWrkDataType = eWrkDataType;
1453 3212 : args.pabyChunkNodataMask =
1454 3212 : bNoDataMaskFullyOpaque ? nullptr : pabyChunkNoDataMask;
1455 3212 : args.nChunkXOff =
1456 3212 : nChunkXOffQueried - (bHasXOffVirtual ? 0 : nXOff);
1457 3212 : args.nChunkXSize = nChunkXSizeQueried;
1458 3212 : args.nChunkYOff =
1459 3212 : nChunkYOffQueried - (bHasYOffVirtual ? 0 : nYOff);
1460 3212 : args.nChunkYSize = nChunkYSizeQueried;
1461 3212 : args.nDstXOff = nDstXOff + nDestXOffVirtual;
1462 3212 : args.nDstXOff2 = nDstXOff + nDestXOffVirtual + nDstXCount;
1463 3212 : args.nDstYOff = nDstYOff + nDestYOffVirtual;
1464 3212 : args.nDstYOff2 = nDstYOff + nDestYOffVirtual + nDstYCount;
1465 3212 : args.pszResampling = pszResampling;
1466 3212 : args.bHasNoData = bHasNoData;
1467 3212 : args.dfNoDataValue = dfNoDataValue;
1468 3212 : args.poColorTable = GetColorTable();
1469 3212 : args.bPropagateNoData = bPropagateNoData;
1470 3212 : eErr = pfnResampleFunc(args, pChunk, &pDstBuffer,
1471 : &eDstBufferDataType);
1472 3212 : if (eErr == CE_None)
1473 : {
1474 3212 : eErr = poMEMBand->RasterIO(
1475 : GF_Write, nDstXOff + nDestXOffVirtual,
1476 : nDstYOff + nDestYOffVirtual, nDstXCount, nDstYCount,
1477 : pDstBuffer, nDstXCount, nDstYCount,
1478 : eDstBufferDataType, 0, 0, nullptr);
1479 : }
1480 3212 : CPLFree(pDstBuffer);
1481 : }
1482 :
1483 3241 : nBlocksDone++;
1484 3666 : if (eErr == CE_None && psExtraArg->pfnProgress != nullptr &&
1485 425 : !psExtraArg->pfnProgress(1.0 * nBlocksDone / nTotalBlocks,
1486 : "", psExtraArg->pProgressData))
1487 : {
1488 1 : eErr = CE_Failure;
1489 : }
1490 : }
1491 : }
1492 :
1493 3241 : CPLFree(pChunk);
1494 3241 : CPLFree(pabyChunkNoDataMask);
1495 : }
1496 :
1497 3390 : if (eBufType != eDataType)
1498 : {
1499 44 : CPL_IGNORE_RET_VAL(poMEMDS->GetRasterBand(1)->RasterIO(
1500 : GF_Read, nDestXOffVirtual, nDestYOffVirtual, nBufXSize, nBufYSize,
1501 : pData, nBufXSize, nBufYSize, eBufType, nPixelSpace, nLineSpace,
1502 : nullptr));
1503 : }
1504 3390 : GDALClose(poMEMDS);
1505 3390 : VSIFree(pTempBuffer);
1506 :
1507 3390 : return eErr;
1508 : }
1509 :
1510 : /************************************************************************/
1511 : /* RasterIOResampled() */
1512 : /************************************************************************/
1513 :
1514 865 : CPLErr GDALDataset::RasterIOResampled(
1515 : GDALRWFlag /* eRWFlag */, int nXOff, int nYOff, int nXSize, int nYSize,
1516 : void *pData, int nBufXSize, int nBufYSize, GDALDataType eBufType,
1517 : int nBandCount, const int *panBandMap, GSpacing nPixelSpace,
1518 : GSpacing nLineSpace, GSpacing nBandSpace, GDALRasterIOExtraArg *psExtraArg)
1519 :
1520 : {
1521 : #if 0
1522 : // Determine if we use warping resampling or overview resampling
1523 : bool bUseWarp = false;
1524 : if( GDALDataTypeIsComplex( eDataType ) )
1525 : bUseWarp = true;
1526 : #endif
1527 :
1528 865 : double dfXOff = nXOff;
1529 865 : double dfYOff = nYOff;
1530 865 : double dfXSize = nXSize;
1531 865 : double dfYSize = nYSize;
1532 865 : if (psExtraArg->bFloatingPointWindowValidity)
1533 : {
1534 744 : dfXOff = psExtraArg->dfXOff;
1535 744 : dfYOff = psExtraArg->dfYOff;
1536 744 : dfXSize = psExtraArg->dfXSize;
1537 744 : dfYSize = psExtraArg->dfYSize;
1538 : }
1539 :
1540 865 : const double dfXRatioDstToSrc = dfXSize / nBufXSize;
1541 865 : const double dfYRatioDstToSrc = dfYSize / nBufYSize;
1542 :
1543 : // Determine the coordinates in the "virtual" output raster to see
1544 : // if there are not integers, in which case we will use them as a shift
1545 : // so that subwindow extracts give the exact same results as entire raster
1546 : // scaling.
1547 865 : double dfDestXOff = dfXOff / dfXRatioDstToSrc;
1548 865 : bool bHasXOffVirtual = false;
1549 865 : int nDestXOffVirtual = 0;
1550 865 : if (fabs(dfDestXOff - static_cast<int>(dfDestXOff + 0.5)) < 1e-8)
1551 : {
1552 736 : bHasXOffVirtual = true;
1553 736 : dfXOff = nXOff;
1554 736 : nDestXOffVirtual = static_cast<int>(dfDestXOff + 0.5);
1555 : }
1556 :
1557 865 : double dfDestYOff = dfYOff / dfYRatioDstToSrc;
1558 865 : bool bHasYOffVirtual = false;
1559 865 : int nDestYOffVirtual = 0;
1560 865 : if (fabs(dfDestYOff - static_cast<int>(dfDestYOff + 0.5)) < 1e-8)
1561 : {
1562 697 : bHasYOffVirtual = true;
1563 697 : dfYOff = nYOff;
1564 697 : nDestYOffVirtual = static_cast<int>(dfDestYOff + 0.5);
1565 : }
1566 :
1567 : // Create a MEM dataset that wraps the output buffer.
1568 : GDALDataset *poMEMDS =
1569 865 : MEMDataset::Create("", nDestXOffVirtual + nBufXSize,
1570 : nDestYOffVirtual + nBufYSize, 0, eBufType, nullptr);
1571 : GDALRasterBand **papoDstBands = static_cast<GDALRasterBand **>(
1572 862 : CPLMalloc(nBandCount * sizeof(GDALRasterBand *)));
1573 860 : int nNBITS = 0;
1574 2765 : for (int i = 0; i < nBandCount; i++)
1575 : {
1576 1909 : char szBuffer[32] = {'\0'};
1577 3830 : int nRet = CPLPrintPointer(
1578 : szBuffer,
1579 1909 : static_cast<GByte *>(pData) - nPixelSpace * nDestXOffVirtual -
1580 1909 : nLineSpace * nDestYOffVirtual + nBandSpace * i,
1581 : sizeof(szBuffer));
1582 1921 : szBuffer[nRet] = 0;
1583 :
1584 1921 : char szBuffer0[64] = {'\0'};
1585 1921 : snprintf(szBuffer0, sizeof(szBuffer0), "DATAPOINTER=%s", szBuffer);
1586 :
1587 1921 : char szBuffer1[64] = {'\0'};
1588 1921 : snprintf(szBuffer1, sizeof(szBuffer1), "PIXELOFFSET=" CPL_FRMT_GIB,
1589 : static_cast<GIntBig>(nPixelSpace));
1590 :
1591 1921 : char szBuffer2[64] = {'\0'};
1592 1921 : snprintf(szBuffer2, sizeof(szBuffer2), "LINEOFFSET=" CPL_FRMT_GIB,
1593 : static_cast<GIntBig>(nLineSpace));
1594 :
1595 1921 : char *apszOptions[4] = {szBuffer0, szBuffer1, szBuffer2, nullptr};
1596 :
1597 1921 : poMEMDS->AddBand(eBufType, apszOptions);
1598 :
1599 1925 : GDALRasterBand *poSrcBand = GetRasterBand(panBandMap[i]);
1600 1911 : papoDstBands[i] = poMEMDS->GetRasterBand(i + 1);
1601 : const char *pszNBITS =
1602 1912 : poSrcBand->GetMetadataItem("NBITS", "IMAGE_STRUCTURE");
1603 1903 : if (pszNBITS)
1604 : {
1605 0 : nNBITS = atoi(pszNBITS);
1606 0 : poMEMDS->GetRasterBand(i + 1)->SetMetadataItem("NBITS", pszNBITS,
1607 0 : "IMAGE_STRUCTURE");
1608 : }
1609 : }
1610 :
1611 856 : CPLErr eErr = CE_None;
1612 :
1613 : // TODO(schwehr): Why disabled? Why not just delete?
1614 : // Looks like this code was initially added as disable by copying
1615 : // from RasterIO here:
1616 : // https://trac.osgeo.org/gdal/changeset/29572
1617 : #if 0
1618 : // Do the resampling.
1619 : if( bUseWarp )
1620 : {
1621 : VRTDatasetH hVRTDS = nullptr;
1622 : GDALRasterBandH hVRTBand = nullptr;
1623 : if( GetDataset() == nullptr )
1624 : {
1625 : /* Create VRT dataset that wraps the whole dataset */
1626 : hVRTDS = VRTCreate(nRasterXSize, nRasterYSize);
1627 : VRTAddBand( hVRTDS, eDataType, nullptr );
1628 : hVRTBand = GDALGetRasterBand(hVRTDS, 1);
1629 : VRTAddSimpleSource( (VRTSourcedRasterBandH)hVRTBand,
1630 : (GDALRasterBandH)this,
1631 : 0, 0,
1632 : nRasterXSize, nRasterYSize,
1633 : 0, 0,
1634 : nRasterXSize, nRasterYSize,
1635 : nullptr, VRT_NODATA_UNSET );
1636 :
1637 : /* Add a mask band if needed */
1638 : if( GetMaskFlags() != GMF_ALL_VALID )
1639 : {
1640 : ((GDALDataset*)hVRTDS)->CreateMaskBand(0);
1641 : VRTSourcedRasterBand* poVRTMaskBand =
1642 : (VRTSourcedRasterBand*)(((GDALRasterBand*)hVRTBand)->GetMaskBand());
1643 : poVRTMaskBand->
1644 : AddMaskBandSource( this,
1645 : 0, 0,
1646 : nRasterXSize, nRasterYSize,
1647 : 0, 0,
1648 : nRasterXSize, nRasterYSize);
1649 : }
1650 : }
1651 :
1652 : GDALWarpOptions* psWarpOptions = GDALCreateWarpOptions();
1653 : psWarpOptions->eResampleAlg = (GDALResampleAlg)psExtraArg->eResampleAlg;
1654 : psWarpOptions->hSrcDS = (GDALDatasetH) (hVRTDS ? hVRTDS : GetDataset());
1655 : psWarpOptions->hDstDS = (GDALDatasetH) poMEMDS;
1656 : psWarpOptions->nBandCount = 1;
1657 : int nSrcBandNumber = (hVRTDS ? 1 : nBand);
1658 : int nDstBandNumber = 1;
1659 : psWarpOptions->panSrcBands = &nSrcBandNumber;
1660 : psWarpOptions->panDstBands = &nDstBandNumber;
1661 : psWarpOptions->pfnProgress = psExtraArg->pfnProgress ?
1662 : psExtraArg->pfnProgress : GDALDummyProgress;
1663 : psWarpOptions->pProgressArg = psExtraArg->pProgressData;
1664 : psWarpOptions->pfnTransformer = GDALRasterIOTransformer;
1665 : GDALRasterIOTransformerStruct sTransformer;
1666 : sTransformer.dfXOff = bHasXOffVirtual ? 0 : dfXOff;
1667 : sTransformer.dfYOff = bHasYOffVirtual ? 0 : dfYOff;
1668 : sTransformer.dfXRatioDstToSrc = dfXRatioDstToSrc;
1669 : sTransformer.dfYRatioDstToSrc = dfYRatioDstToSrc;
1670 : psWarpOptions->pTransformerArg = &sTransformer;
1671 :
1672 : GDALWarpOperationH hWarpOperation = GDALCreateWarpOperation(psWarpOptions);
1673 : eErr = GDALChunkAndWarpImage( hWarpOperation,
1674 : nDestXOffVirtual, nDestYOffVirtual,
1675 : nBufXSize, nBufYSize );
1676 : GDALDestroyWarpOperation( hWarpOperation );
1677 :
1678 : psWarpOptions->panSrcBands = nullptr;
1679 : psWarpOptions->panDstBands = nullptr;
1680 : GDALDestroyWarpOptions( psWarpOptions );
1681 :
1682 : if( hVRTDS )
1683 : GDALClose(hVRTDS);
1684 : }
1685 : else
1686 : #endif
1687 : {
1688 856 : const char *pszResampling =
1689 1597 : (psExtraArg->eResampleAlg == GRIORA_Bilinear) ? "BILINEAR"
1690 741 : : (psExtraArg->eResampleAlg == GRIORA_Cubic) ? "CUBIC"
1691 0 : : (psExtraArg->eResampleAlg == GRIORA_CubicSpline) ? "CUBICSPLINE"
1692 0 : : (psExtraArg->eResampleAlg == GRIORA_Lanczos) ? "LANCZOS"
1693 0 : : (psExtraArg->eResampleAlg == GRIORA_Average) ? "AVERAGE"
1694 0 : : (psExtraArg->eResampleAlg == GRIORA_RMS) ? "RMS"
1695 0 : : (psExtraArg->eResampleAlg == GRIORA_Mode) ? "MODE"
1696 0 : : (psExtraArg->eResampleAlg == GRIORA_Gauss) ? "GAUSS"
1697 : : "UNKNOWN";
1698 :
1699 856 : GDALRasterBand *poFirstSrcBand = GetRasterBand(panBandMap[0]);
1700 862 : GDALDataType eDataType = poFirstSrcBand->GetRasterDataType();
1701 : int nBlockXSize, nBlockYSize;
1702 855 : poFirstSrcBand->GetBlockSize(&nBlockXSize, &nBlockYSize);
1703 :
1704 : int nKernelRadius;
1705 : GDALResampleFunction pfnResampleFunc =
1706 853 : GDALGetResampleFunction(pszResampling, &nKernelRadius);
1707 858 : CPLAssert(pfnResampleFunc);
1708 : #ifdef GDAL_ENABLE_RESAMPLING_MULTIBAND
1709 : GDALResampleFunctionMultiBands pfnResampleFuncMultiBands =
1710 : GDALGetResampleFunctionMultiBands(pszResampling, &nKernelRadius);
1711 : #endif
1712 : GDALDataType eWrkDataType =
1713 858 : GDALGetOvrWorkDataType(pszResampling, eDataType);
1714 :
1715 856 : int nDstBlockXSize = nBufXSize;
1716 856 : int nDstBlockYSize = nBufYSize;
1717 : int nFullResXChunk, nFullResYChunk;
1718 : while (true)
1719 : {
1720 856 : nFullResXChunk =
1721 856 : 3 + static_cast<int>(nDstBlockXSize * dfXRatioDstToSrc);
1722 856 : nFullResYChunk =
1723 856 : 3 + static_cast<int>(nDstBlockYSize * dfYRatioDstToSrc);
1724 856 : if (nFullResXChunk > nRasterXSize)
1725 573 : nFullResXChunk = nRasterXSize;
1726 856 : if (nFullResYChunk > nRasterYSize)
1727 50 : nFullResYChunk = nRasterYSize;
1728 856 : if ((nDstBlockXSize == 1 && nDstBlockYSize == 1) ||
1729 854 : (static_cast<GIntBig>(nFullResXChunk) * nFullResYChunk <=
1730 : 1024 * 1024))
1731 : break;
1732 : // When operating on the full width of a raster whose block width is
1733 : // the raster width, prefer doing chunks in height.
1734 0 : if (nFullResXChunk >= nXSize && nXSize == nBlockXSize &&
1735 : nDstBlockYSize > 1)
1736 0 : nDstBlockYSize /= 2;
1737 : /* Otherwise cut the maximal dimension */
1738 0 : else if (nDstBlockXSize > 1 &&
1739 0 : (nFullResXChunk > nFullResYChunk || nDstBlockYSize == 1))
1740 0 : nDstBlockXSize /= 2;
1741 : else
1742 0 : nDstBlockYSize /= 2;
1743 : }
1744 :
1745 1716 : int nOvrFactor = std::max(static_cast<int>(0.5 + dfXRatioDstToSrc),
1746 856 : static_cast<int>(0.5 + dfYRatioDstToSrc));
1747 860 : if (nOvrFactor == 0)
1748 99 : nOvrFactor = 1;
1749 860 : int nFullResXSizeQueried =
1750 860 : nFullResXChunk + 2 * nKernelRadius * nOvrFactor;
1751 860 : int nFullResYSizeQueried =
1752 860 : nFullResYChunk + 2 * nKernelRadius * nOvrFactor;
1753 :
1754 860 : if (nFullResXSizeQueried > nRasterXSize)
1755 598 : nFullResXSizeQueried = nRasterXSize;
1756 860 : if (nFullResYSizeQueried > nRasterYSize)
1757 53 : nFullResYSizeQueried = nRasterYSize;
1758 :
1759 860 : void *pChunk = VSI_MALLOC3_VERBOSE(
1760 : cpl::fits_on<int>(GDALGetDataTypeSizeBytes(eWrkDataType) *
1761 : nBandCount),
1762 : nFullResXSizeQueried, nFullResYSizeQueried);
1763 864 : GByte *pabyChunkNoDataMask = nullptr;
1764 :
1765 864 : GDALRasterBand *poMaskBand = poFirstSrcBand->GetMaskBand();
1766 865 : int nMaskFlags = poFirstSrcBand->GetMaskFlags();
1767 :
1768 861 : bool bUseNoDataMask = ((nMaskFlags & GMF_ALL_VALID) == 0);
1769 861 : if (bUseNoDataMask)
1770 : {
1771 596 : pabyChunkNoDataMask = static_cast<GByte *>(VSI_MALLOC2_VERBOSE(
1772 : nFullResXSizeQueried, nFullResYSizeQueried));
1773 : }
1774 861 : if (pChunk == nullptr ||
1775 596 : (bUseNoDataMask && pabyChunkNoDataMask == nullptr))
1776 : {
1777 3 : GDALClose(poMEMDS);
1778 0 : CPLFree(pChunk);
1779 0 : CPLFree(pabyChunkNoDataMask);
1780 0 : CPLFree(papoDstBands);
1781 0 : return CE_Failure;
1782 : }
1783 :
1784 858 : const int nTotalBlocks = DIV_ROUND_UP(nBufXSize, nDstBlockXSize) *
1785 858 : DIV_ROUND_UP(nBufYSize, nDstBlockYSize);
1786 858 : int nBlocksDone = 0;
1787 :
1788 : int nDstYOff;
1789 1727 : for (nDstYOff = 0; nDstYOff < nBufYSize && eErr == CE_None;
1790 869 : nDstYOff += nDstBlockYSize)
1791 : {
1792 : int nDstYCount;
1793 856 : if (nDstYOff + nDstBlockYSize <= nBufYSize)
1794 857 : nDstYCount = nDstBlockYSize;
1795 : else
1796 0 : nDstYCount = nBufYSize - nDstYOff;
1797 :
1798 856 : int nChunkYOff =
1799 856 : nYOff + static_cast<int>(nDstYOff * dfYRatioDstToSrc);
1800 856 : int nChunkYOff2 = nYOff + 1 +
1801 856 : static_cast<int>(ceil((nDstYOff + nDstYCount) *
1802 : dfYRatioDstToSrc));
1803 856 : if (nChunkYOff2 > nRasterYSize)
1804 126 : nChunkYOff2 = nRasterYSize;
1805 856 : int nYCount = nChunkYOff2 - nChunkYOff;
1806 856 : CPLAssert(nYCount <= nFullResYChunk);
1807 :
1808 856 : int nChunkYOffQueried = nChunkYOff - nKernelRadius * nOvrFactor;
1809 856 : int nChunkYSizeQueried = nYCount + 2 * nKernelRadius * nOvrFactor;
1810 856 : if (nChunkYOffQueried < 0)
1811 : {
1812 129 : nChunkYSizeQueried += nChunkYOffQueried;
1813 129 : nChunkYOffQueried = 0;
1814 : }
1815 856 : if (nChunkYSizeQueried + nChunkYOffQueried > nRasterYSize)
1816 144 : nChunkYSizeQueried = nRasterYSize - nChunkYOffQueried;
1817 856 : CPLAssert(nChunkYSizeQueried <= nFullResYSizeQueried);
1818 :
1819 : int nDstXOff;
1820 1722 : for (nDstXOff = 0; nDstXOff < nBufXSize && eErr == CE_None;
1821 866 : nDstXOff += nDstBlockXSize)
1822 : {
1823 : int nDstXCount;
1824 853 : if (nDstXOff + nDstBlockXSize <= nBufXSize)
1825 853 : nDstXCount = nDstBlockXSize;
1826 : else
1827 0 : nDstXCount = nBufXSize - nDstXOff;
1828 :
1829 853 : int nChunkXOff =
1830 853 : nXOff + static_cast<int>(nDstXOff * dfXRatioDstToSrc);
1831 853 : int nChunkXOff2 =
1832 853 : nXOff + 1 +
1833 853 : static_cast<int>(
1834 853 : ceil((nDstXOff + nDstXCount) * dfXRatioDstToSrc));
1835 853 : if (nChunkXOff2 > nRasterXSize)
1836 628 : nChunkXOff2 = nRasterXSize;
1837 853 : int nXCount = nChunkXOff2 - nChunkXOff;
1838 853 : CPLAssert(nXCount <= nFullResXChunk);
1839 :
1840 853 : int nChunkXOffQueried = nChunkXOff - nKernelRadius * nOvrFactor;
1841 853 : int nChunkXSizeQueried =
1842 853 : nXCount + 2 * nKernelRadius * nOvrFactor;
1843 853 : if (nChunkXOffQueried < 0)
1844 : {
1845 623 : nChunkXSizeQueried += nChunkXOffQueried;
1846 623 : nChunkXOffQueried = 0;
1847 : }
1848 853 : if (nChunkXSizeQueried + nChunkXOffQueried > nRasterXSize)
1849 632 : nChunkXSizeQueried = nRasterXSize - nChunkXOffQueried;
1850 853 : CPLAssert(nChunkXSizeQueried <= nFullResXSizeQueried);
1851 :
1852 853 : bool bSkipResample = false;
1853 853 : bool bNoDataMaskFullyOpaque = false;
1854 853 : if (eErr == CE_None && bUseNoDataMask)
1855 : {
1856 596 : eErr = poMaskBand->RasterIO(
1857 : GF_Read, nChunkXOffQueried, nChunkYOffQueried,
1858 : nChunkXSizeQueried, nChunkYSizeQueried,
1859 : pabyChunkNoDataMask, nChunkXSizeQueried,
1860 : nChunkYSizeQueried, GDT_Byte, 0, 0, nullptr);
1861 :
1862 : /* Optimizations if mask if fully opaque or transparent */
1863 596 : const int nPixels = nChunkXSizeQueried * nChunkYSizeQueried;
1864 596 : const GByte bVal = pabyChunkNoDataMask[0];
1865 596 : int i = 1; // Used after for.
1866 40677800 : for (; i < nPixels; i++)
1867 : {
1868 40677300 : if (pabyChunkNoDataMask[i] != bVal)
1869 72 : break;
1870 : }
1871 596 : if (i == nPixels)
1872 : {
1873 524 : if (bVal == 0)
1874 : {
1875 373 : GByte abyZero[16] = {0};
1876 780 : for (int iBand = 0; iBand < nBandCount; iBand++)
1877 : {
1878 3499 : for (int j = 0; j < nDstYCount; j++)
1879 : {
1880 3092 : GDALCopyWords64(
1881 : abyZero, GDT_Byte, 0,
1882 : static_cast<GByte *>(pData) +
1883 3092 : iBand * nBandSpace +
1884 3092 : nLineSpace * (j + nDstYOff) +
1885 3092 : nDstXOff * nPixelSpace,
1886 : eBufType, static_cast<int>(nPixelSpace),
1887 : nDstXCount);
1888 : }
1889 : }
1890 373 : bSkipResample = true;
1891 : }
1892 : else
1893 : {
1894 151 : bNoDataMaskFullyOpaque = true;
1895 : }
1896 : }
1897 : }
1898 :
1899 853 : if (!bSkipResample && eErr == CE_None)
1900 : {
1901 : /* Read the source buffers */
1902 477 : eErr = RasterIO(
1903 : GF_Read, nChunkXOffQueried, nChunkYOffQueried,
1904 : nChunkXSizeQueried, nChunkYSizeQueried, pChunk,
1905 : nChunkXSizeQueried, nChunkYSizeQueried, eWrkDataType,
1906 : nBandCount, panBandMap, 0, 0, 0, nullptr);
1907 : }
1908 :
1909 : #ifdef GDAL_ENABLE_RESAMPLING_MULTIBAND
1910 : if (pfnResampleFuncMultiBands && !bSkipResample &&
1911 : eErr == CE_None)
1912 : {
1913 : eErr = pfnResampleFuncMultiBands(
1914 : dfXRatioDstToSrc, dfYRatioDstToSrc,
1915 : dfXOff - nXOff, /* == 0 if bHasXOffVirtual */
1916 : dfYOff - nYOff, /* == 0 if bHasYOffVirtual */
1917 : eWrkDataType, (GByte *)pChunk, nBandCount,
1918 : bNoDataMaskFullyOpaque ? nullptr : pabyChunkNoDataMask,
1919 : nChunkXOffQueried - (bHasXOffVirtual ? 0 : nXOff),
1920 : nChunkXSizeQueried,
1921 : nChunkYOffQueried - (bHasYOffVirtual ? 0 : nYOff),
1922 : nChunkYSizeQueried, nDstXOff + nDestXOffVirtual,
1923 : nDstXOff + nDestXOffVirtual + nDstXCount,
1924 : nDstYOff + nDestYOffVirtual,
1925 : nDstYOff + nDestYOffVirtual + nDstYCount, papoDstBands,
1926 : pszResampling, FALSE /*bHasNoData*/,
1927 : 0.0 /* dfNoDataValue */, nullptr /* color table*/,
1928 : eDataType);
1929 : }
1930 : else
1931 : #endif
1932 : {
1933 : size_t nChunkBandOffset =
1934 863 : static_cast<size_t>(nChunkXSizeQueried) *
1935 863 : nChunkYSizeQueried *
1936 863 : GDALGetDataTypeSizeBytes(eWrkDataType);
1937 2376 : for (int i = 0;
1938 2376 : i < nBandCount && !bSkipResample && eErr == CE_None;
1939 : i++)
1940 : {
1941 1510 : const bool bPropagateNoData = false;
1942 1510 : void *pDstBuffer = nullptr;
1943 1510 : GDALDataType eDstBufferDataType = GDT_Unknown;
1944 : GDALRasterBand *poMEMBand =
1945 1510 : poMEMDS->GetRasterBand(i + 1);
1946 1509 : GDALOverviewResampleArgs args;
1947 1509 : args.eSrcDataType = eDataType;
1948 1509 : args.eOvrDataType = poMEMBand->GetRasterDataType();
1949 1512 : args.nOvrXSize = poMEMBand->GetXSize();
1950 1510 : args.nOvrYSize = poMEMBand->GetYSize();
1951 1510 : args.nOvrNBITS = nNBITS;
1952 1510 : args.dfXRatioDstToSrc = dfXRatioDstToSrc;
1953 1510 : args.dfYRatioDstToSrc = dfYRatioDstToSrc;
1954 1510 : args.dfSrcXDelta =
1955 1510 : dfXOff - nXOff; /* == 0 if bHasXOffVirtual */
1956 1510 : args.dfSrcYDelta =
1957 1510 : dfYOff - nYOff; /* == 0 if bHasYOffVirtual */
1958 1510 : args.eWrkDataType = eWrkDataType;
1959 1510 : args.pabyChunkNodataMask = bNoDataMaskFullyOpaque
1960 1510 : ? nullptr
1961 : : pabyChunkNoDataMask;
1962 1510 : args.nChunkXOff =
1963 1510 : nChunkXOffQueried - (bHasXOffVirtual ? 0 : nXOff);
1964 1510 : args.nChunkXSize = nChunkXSizeQueried;
1965 1510 : args.nChunkYOff =
1966 1510 : nChunkYOffQueried - (bHasYOffVirtual ? 0 : nYOff);
1967 1510 : args.nChunkYSize = nChunkYSizeQueried;
1968 1510 : args.nDstXOff = nDstXOff + nDestXOffVirtual;
1969 1510 : args.nDstXOff2 =
1970 1510 : nDstXOff + nDestXOffVirtual + nDstXCount;
1971 1510 : args.nDstYOff = nDstYOff + nDestYOffVirtual;
1972 1510 : args.nDstYOff2 =
1973 1510 : nDstYOff + nDestYOffVirtual + nDstYCount;
1974 1510 : args.pszResampling = pszResampling;
1975 1510 : args.bHasNoData = false;
1976 1510 : args.dfNoDataValue = 0.0;
1977 1510 : args.poColorTable = nullptr;
1978 1510 : args.bPropagateNoData = bPropagateNoData;
1979 :
1980 : eErr =
1981 3023 : pfnResampleFunc(args,
1982 1510 : reinterpret_cast<GByte *>(pChunk) +
1983 1510 : i * nChunkBandOffset,
1984 : &pDstBuffer, &eDstBufferDataType);
1985 1513 : if (eErr == CE_None)
1986 : {
1987 1513 : eErr = poMEMBand->RasterIO(
1988 : GF_Write, nDstXOff + nDestXOffVirtual,
1989 : nDstYOff + nDestYOffVirtual, nDstXCount,
1990 : nDstYCount, pDstBuffer, nDstXCount, nDstYCount,
1991 : eDstBufferDataType, 0, 0, nullptr);
1992 : }
1993 1513 : CPLFree(pDstBuffer);
1994 : }
1995 : }
1996 :
1997 866 : nBlocksDone++;
1998 1255 : if (eErr == CE_None && psExtraArg->pfnProgress != nullptr &&
1999 389 : !psExtraArg->pfnProgress(1.0 * nBlocksDone / nTotalBlocks,
2000 : "", psExtraArg->pProgressData))
2001 : {
2002 0 : eErr = CE_Failure;
2003 : }
2004 : }
2005 : }
2006 :
2007 871 : CPLFree(pChunk);
2008 865 : CPLFree(pabyChunkNoDataMask);
2009 : }
2010 :
2011 865 : CPLFree(papoDstBands);
2012 865 : GDALClose(poMEMDS);
2013 :
2014 865 : return eErr;
2015 : }
2016 :
2017 : //! @endcond
2018 :
2019 : /************************************************************************/
2020 : /* GDALSwapWords() */
2021 : /************************************************************************/
2022 :
2023 : /**
2024 : * Byte swap words in-place.
2025 : *
2026 : * This function will byte swap a set of 2, 4 or 8 byte words "in place" in
2027 : * a memory array. No assumption is made that the words being swapped are
2028 : * word aligned in memory. Use the CPL_LSB and CPL_MSB macros from cpl_port.h
2029 : * to determine if the current platform is big endian or little endian. Use
2030 : * The macros like CPL_SWAP32() to byte swap single values without the overhead
2031 : * of a function call.
2032 : *
2033 : * @param pData pointer to start of data buffer.
2034 : * @param nWordSize size of words being swapped in bytes. Normally 2, 4 or 8.
2035 : * @param nWordCount the number of words to be swapped in this call.
2036 : * @param nWordSkip the byte offset from the start of one word to the start of
2037 : * the next. For packed buffers this is the same as nWordSize.
2038 : */
2039 :
2040 497137 : void CPL_STDCALL GDALSwapWords(void *pData, int nWordSize, int nWordCount,
2041 : int nWordSkip)
2042 :
2043 : {
2044 497137 : if (nWordCount > 0)
2045 497137 : VALIDATE_POINTER0(pData, "GDALSwapWords");
2046 :
2047 497137 : GByte *pabyData = static_cast<GByte *>(pData);
2048 :
2049 497137 : switch (nWordSize)
2050 : {
2051 7234 : case 1:
2052 7234 : break;
2053 :
2054 476903 : case 2:
2055 476903 : CPLAssert(nWordSkip >= 2 || nWordCount == 1);
2056 228062000 : for (int i = 0; i < nWordCount; i++)
2057 : {
2058 227585000 : CPL_SWAP16PTR(pabyData);
2059 227585000 : pabyData += nWordSkip;
2060 : }
2061 476903 : break;
2062 :
2063 10574 : case 4:
2064 10574 : CPLAssert(nWordSkip >= 4 || nWordCount == 1);
2065 10574 : if (CPL_IS_ALIGNED(pabyData, 4) && (nWordSkip % 4) == 0)
2066 : {
2067 29140500 : for (int i = 0; i < nWordCount; i++)
2068 : {
2069 29130000 : *reinterpret_cast<GUInt32 *>(pabyData) = CPL_SWAP32(
2070 : *reinterpret_cast<const GUInt32 *>(pabyData));
2071 29130000 : pabyData += nWordSkip;
2072 10571 : }
2073 : }
2074 : else
2075 : {
2076 9 : for (int i = 0; i < nWordCount; i++)
2077 : {
2078 6 : CPL_SWAP32PTR(pabyData);
2079 6 : pabyData += nWordSkip;
2080 : }
2081 : }
2082 10574 : break;
2083 :
2084 2426 : case 8:
2085 2426 : CPLAssert(nWordSkip >= 8 || nWordCount == 1);
2086 2426 : if (CPL_IS_ALIGNED(pabyData, 8) && (nWordSkip % 8) == 0)
2087 : {
2088 3356900 : for (int i = 0; i < nWordCount; i++)
2089 : {
2090 3354480 : *reinterpret_cast<GUInt64 *>(pabyData) = CPL_SWAP64(
2091 : *reinterpret_cast<const GUInt64 *>(pabyData));
2092 3354480 : pabyData += nWordSkip;
2093 2425 : }
2094 : }
2095 : else
2096 : {
2097 3 : for (int i = 0; i < nWordCount; i++)
2098 : {
2099 2 : CPL_SWAP64PTR(pabyData);
2100 2 : pabyData += nWordSkip;
2101 : }
2102 : }
2103 2426 : break;
2104 :
2105 0 : default:
2106 0 : CPLAssert(false);
2107 : }
2108 : }
2109 :
2110 : /************************************************************************/
2111 : /* GDALSwapWordsEx() */
2112 : /************************************************************************/
2113 :
2114 : /**
2115 : * Byte swap words in-place.
2116 : *
2117 : * This function will byte swap a set of 2, 4 or 8 byte words "in place" in
2118 : * a memory array. No assumption is made that the words being swapped are
2119 : * word aligned in memory. Use the CPL_LSB and CPL_MSB macros from cpl_port.h
2120 : * to determine if the current platform is big endian or little endian. Use
2121 : * The macros like CPL_SWAP32() to byte swap single values without the overhead
2122 : * of a function call.
2123 : *
2124 : * @param pData pointer to start of data buffer.
2125 : * @param nWordSize size of words being swapped in bytes. Normally 2, 4 or 8.
2126 : * @param nWordCount the number of words to be swapped in this call.
2127 : * @param nWordSkip the byte offset from the start of one word to the start of
2128 : * the next. For packed buffers this is the same as nWordSize.
2129 : */
2130 6118 : void CPL_STDCALL GDALSwapWordsEx(void *pData, int nWordSize, size_t nWordCount,
2131 : int nWordSkip)
2132 : {
2133 6118 : GByte *pabyData = static_cast<GByte *>(pData);
2134 12236 : while (nWordCount)
2135 : {
2136 : // Pick-up a multiple of 8 as max chunk size.
2137 6118 : const int nWordCountSmall =
2138 6118 : (nWordCount > (1 << 30)) ? (1 << 30) : static_cast<int>(nWordCount);
2139 6118 : GDALSwapWords(pabyData, nWordSize, nWordCountSmall, nWordSkip);
2140 6118 : pabyData += static_cast<size_t>(nWordSkip) * nWordCountSmall;
2141 6118 : nWordCount -= nWordCountSmall;
2142 : }
2143 6118 : }
2144 :
2145 : // Place the new GDALCopyWords helpers in an anonymous namespace
2146 : namespace
2147 : {
2148 :
2149 : /************************************************************************/
2150 : /* GDALCopyWordsT() */
2151 : /************************************************************************/
2152 : /**
2153 : * Template function, used to copy data from pSrcData into buffer
2154 : * pDstData, with stride nSrcPixelStride in the source data and
2155 : * stride nDstPixelStride in the destination data. This template can
2156 : * deal with the case where the input data type is real or complex and
2157 : * the output is real.
2158 : *
2159 : * @param pSrcData the source data buffer
2160 : * @param nSrcPixelStride the stride, in the buffer pSrcData for pixels
2161 : * of interest.
2162 : * @param pDstData the destination buffer.
2163 : * @param nDstPixelStride the stride in the buffer pDstData for pixels of
2164 : * interest.
2165 : * @param nWordCount the total number of pixel words to copy
2166 : *
2167 : * @code
2168 : * // Assume an input buffer of type GUInt16 named pBufferIn
2169 : * GByte *pBufferOut = new GByte[numBytesOut];
2170 : * GDALCopyWordsT<GUInt16, GByte>(pSrcData, 2, pDstData, 1, numBytesOut);
2171 : * @endcode
2172 : * @note
2173 : * This is a private function, and should not be exposed outside of
2174 : * rasterio.cpp. External users should call the GDALCopyWords driver function.
2175 : */
2176 :
2177 : template <class Tin, class Tout>
2178 42360542 : static void inline GDALCopyWordsGenericT(const Tin *const CPL_RESTRICT pSrcData,
2179 : int nSrcPixelStride,
2180 : Tout *const CPL_RESTRICT pDstData,
2181 : int nDstPixelStride,
2182 : GPtrDiff_t nWordCount)
2183 : {
2184 42360542 : decltype(nWordCount) nDstOffset = 0;
2185 :
2186 42360542 : const char *const pSrcDataPtr = reinterpret_cast<const char *>(pSrcData);
2187 42360542 : char *const pDstDataPtr = reinterpret_cast<char *>(pDstData);
2188 518940496 : for (decltype(nWordCount) n = 0; n < nWordCount; n++)
2189 : {
2190 476583393 : const Tin tValue =
2191 476583393 : *reinterpret_cast<const Tin *>(pSrcDataPtr + (n * nSrcPixelStride));
2192 476583393 : Tout *const pOutPixel =
2193 476583393 : reinterpret_cast<Tout *>(pDstDataPtr + nDstOffset);
2194 :
2195 476583393 : GDALCopyWord(tValue, *pOutPixel);
2196 :
2197 476579793 : nDstOffset += nDstPixelStride;
2198 : }
2199 42356984 : }
2200 :
2201 : template <class Tin, class Tout>
2202 29698002 : static void CPL_NOINLINE GDALCopyWordsT(const Tin *const CPL_RESTRICT pSrcData,
2203 : int nSrcPixelStride,
2204 : Tout *const CPL_RESTRICT pDstData,
2205 : int nDstPixelStride,
2206 : GPtrDiff_t nWordCount)
2207 : {
2208 29698002 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData, nDstPixelStride,
2209 : nWordCount);
2210 29698002 : }
2211 :
2212 : template <class Tin, class Tout>
2213 5011188 : static void inline GDALCopyWordsT_8atatime(
2214 : const Tin *const CPL_RESTRICT pSrcData, int nSrcPixelStride,
2215 : Tout *const CPL_RESTRICT pDstData, int nDstPixelStride,
2216 : GPtrDiff_t nWordCount)
2217 : {
2218 5011188 : decltype(nWordCount) nDstOffset = 0;
2219 :
2220 5011188 : const char *const pSrcDataPtr = reinterpret_cast<const char *>(pSrcData);
2221 5011188 : char *const pDstDataPtr = reinterpret_cast<char *>(pDstData);
2222 5011188 : decltype(nWordCount) n = 0;
2223 5011188 : if (nSrcPixelStride == static_cast<int>(sizeof(Tin)) &&
2224 : nDstPixelStride == static_cast<int>(sizeof(Tout)))
2225 : {
2226 37031656 : for (; n < nWordCount - 7; n += 8)
2227 : {
2228 36552910 : const Tin *pInValues = reinterpret_cast<const Tin *>(
2229 36552910 : pSrcDataPtr + (n * nSrcPixelStride));
2230 36552910 : Tout *const pOutPixels =
2231 36552910 : reinterpret_cast<Tout *>(pDstDataPtr + nDstOffset);
2232 :
2233 36552910 : GDALCopy8Words(pInValues, pOutPixels);
2234 :
2235 36550218 : nDstOffset += 8 * nDstPixelStride;
2236 : }
2237 : }
2238 10353591 : for (; n < nWordCount; n++)
2239 : {
2240 5342316 : const Tin tValue =
2241 5342316 : *reinterpret_cast<const Tin *>(pSrcDataPtr + (n * nSrcPixelStride));
2242 5342316 : Tout *const pOutPixel =
2243 5342316 : reinterpret_cast<Tout *>(pDstDataPtr + nDstOffset);
2244 :
2245 5342316 : GDALCopyWord(tValue, *pOutPixel);
2246 :
2247 5345132 : nDstOffset += nDstPixelStride;
2248 : }
2249 5011285 : }
2250 :
2251 : #ifdef HAVE_SSE2
2252 :
2253 : template <class Tout>
2254 39704 : void GDALCopyWordsByteTo16Bit(const GByte *const CPL_RESTRICT pSrcData,
2255 : int nSrcPixelStride,
2256 : Tout *const CPL_RESTRICT pDstData,
2257 : int nDstPixelStride, GPtrDiff_t nWordCount)
2258 : {
2259 : static_assert(std::is_integral<Tout>::value &&
2260 : sizeof(Tout) == sizeof(uint16_t),
2261 : "Bad Tout");
2262 39704 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2263 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2264 : {
2265 33353 : decltype(nWordCount) n = 0;
2266 33353 : const __m128i xmm_zero = _mm_setzero_si128();
2267 33353 : GByte *CPL_RESTRICT pabyDstDataPtr =
2268 : reinterpret_cast<GByte *>(pDstData);
2269 1415717 : for (; n < nWordCount - 15; n += 16)
2270 : {
2271 1382364 : __m128i xmm = _mm_loadu_si128(
2272 1382364 : reinterpret_cast<const __m128i *>(pSrcData + n));
2273 1382364 : __m128i xmm0 = _mm_unpacklo_epi8(xmm, xmm_zero);
2274 1382364 : __m128i xmm1 = _mm_unpackhi_epi8(xmm, xmm_zero);
2275 : _mm_storeu_si128(
2276 1382364 : reinterpret_cast<__m128i *>(pabyDstDataPtr + n * 2), xmm0);
2277 : _mm_storeu_si128(
2278 1382364 : reinterpret_cast<__m128i *>(pabyDstDataPtr + n * 2 + 16), xmm1);
2279 : }
2280 109343 : for (; n < nWordCount; n++)
2281 : {
2282 75990 : pDstData[n] = pSrcData[n];
2283 33353 : }
2284 : }
2285 : else
2286 : {
2287 6351 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2288 : nDstPixelStride, nWordCount);
2289 : }
2290 39704 : }
2291 :
2292 : template <>
2293 26970 : CPL_NOINLINE void GDALCopyWordsT(const GByte *const CPL_RESTRICT pSrcData,
2294 : int nSrcPixelStride,
2295 : GUInt16 *const CPL_RESTRICT pDstData,
2296 : int nDstPixelStride, GPtrDiff_t nWordCount)
2297 : {
2298 26970 : GDALCopyWordsByteTo16Bit(pSrcData, nSrcPixelStride, pDstData,
2299 : nDstPixelStride, nWordCount);
2300 26970 : }
2301 :
2302 : template <>
2303 12734 : CPL_NOINLINE void GDALCopyWordsT(const GByte *const CPL_RESTRICT pSrcData,
2304 : int nSrcPixelStride,
2305 : GInt16 *const CPL_RESTRICT pDstData,
2306 : int nDstPixelStride, GPtrDiff_t nWordCount)
2307 : {
2308 12734 : GDALCopyWordsByteTo16Bit(pSrcData, nSrcPixelStride, pDstData,
2309 : nDstPixelStride, nWordCount);
2310 12734 : }
2311 :
2312 : template <class Tout>
2313 12834865 : void GDALCopyWordsByteTo32Bit(const GByte *const CPL_RESTRICT pSrcData,
2314 : int nSrcPixelStride,
2315 : Tout *const CPL_RESTRICT pDstData,
2316 : int nDstPixelStride, GPtrDiff_t nWordCount)
2317 : {
2318 : static_assert(std::is_integral<Tout>::value &&
2319 : sizeof(Tout) == sizeof(uint32_t),
2320 : "Bad Tout");
2321 12834865 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2322 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2323 : {
2324 6278995 : decltype(nWordCount) n = 0;
2325 6278995 : const __m128i xmm_zero = _mm_setzero_si128();
2326 6278995 : GByte *CPL_RESTRICT pabyDstDataPtr =
2327 : reinterpret_cast<GByte *>(pDstData);
2328 69808200 : for (; n < nWordCount - 15; n += 16)
2329 : {
2330 63459645 : __m128i xmm = _mm_loadu_si128(
2331 63459645 : reinterpret_cast<const __m128i *>(pSrcData + n));
2332 63554645 : __m128i xmm_low = _mm_unpacklo_epi8(xmm, xmm_zero);
2333 63614245 : __m128i xmm_high = _mm_unpackhi_epi8(xmm, xmm_zero);
2334 63498745 : __m128i xmm0 = _mm_unpacklo_epi16(xmm_low, xmm_zero);
2335 63528145 : __m128i xmm1 = _mm_unpackhi_epi16(xmm_low, xmm_zero);
2336 63373345 : __m128i xmm2 = _mm_unpacklo_epi16(xmm_high, xmm_zero);
2337 63529245 : __m128i xmm3 = _mm_unpackhi_epi16(xmm_high, xmm_zero);
2338 : _mm_storeu_si128(
2339 63529245 : reinterpret_cast<__m128i *>(pabyDstDataPtr + n * 4), xmm0);
2340 : _mm_storeu_si128(
2341 63529245 : reinterpret_cast<__m128i *>(pabyDstDataPtr + n * 4 + 16), xmm1);
2342 : _mm_storeu_si128(
2343 63529245 : reinterpret_cast<__m128i *>(pabyDstDataPtr + n * 4 + 32), xmm2);
2344 : _mm_storeu_si128(
2345 63529245 : reinterpret_cast<__m128i *>(pabyDstDataPtr + n * 4 + 48), xmm3);
2346 : }
2347 14539179 : for (; n < nWordCount; n++)
2348 : {
2349 8190544 : pDstData[n] = pSrcData[n];
2350 6348615 : }
2351 : }
2352 : else
2353 : {
2354 6555920 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2355 : nDstPixelStride, nWordCount);
2356 : }
2357 12899765 : }
2358 :
2359 : template <>
2360 465 : CPL_NOINLINE void GDALCopyWordsT(const GByte *const CPL_RESTRICT pSrcData,
2361 : int nSrcPixelStride,
2362 : GUInt32 *const CPL_RESTRICT pDstData,
2363 : int nDstPixelStride, GPtrDiff_t nWordCount)
2364 : {
2365 465 : GDALCopyWordsByteTo32Bit(pSrcData, nSrcPixelStride, pDstData,
2366 : nDstPixelStride, nWordCount);
2367 465 : }
2368 :
2369 : template <>
2370 12834600 : CPL_NOINLINE void GDALCopyWordsT(const GByte *const CPL_RESTRICT pSrcData,
2371 : int nSrcPixelStride,
2372 : GInt32 *const CPL_RESTRICT pDstData,
2373 : int nDstPixelStride, GPtrDiff_t nWordCount)
2374 : {
2375 12834600 : GDALCopyWordsByteTo32Bit(pSrcData, nSrcPixelStride, pDstData,
2376 : nDstPixelStride, nWordCount);
2377 12831100 : }
2378 :
2379 : template <>
2380 2475750 : CPL_NOINLINE void GDALCopyWordsT(const GByte *const CPL_RESTRICT pSrcData,
2381 : int nSrcPixelStride,
2382 : float *const CPL_RESTRICT pDstData,
2383 : int nDstPixelStride, GPtrDiff_t nWordCount)
2384 : {
2385 2475750 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2386 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2387 : {
2388 115070 : decltype(nWordCount) n = 0;
2389 115070 : const __m128i xmm_zero = _mm_setzero_si128();
2390 115070 : GByte *CPL_RESTRICT pabyDstDataPtr =
2391 : reinterpret_cast<GByte *>(pDstData);
2392 3323680 : for (; n < nWordCount - 15; n += 16)
2393 : {
2394 3208610 : __m128i xmm = _mm_loadu_si128(
2395 3208610 : reinterpret_cast<const __m128i *>(pSrcData + n));
2396 3208610 : __m128i xmm_low = _mm_unpacklo_epi8(xmm, xmm_zero);
2397 3208610 : __m128i xmm_high = _mm_unpackhi_epi8(xmm, xmm_zero);
2398 3208610 : __m128i xmm0 = _mm_unpacklo_epi16(xmm_low, xmm_zero);
2399 3208610 : __m128i xmm1 = _mm_unpackhi_epi16(xmm_low, xmm_zero);
2400 3208610 : __m128i xmm2 = _mm_unpacklo_epi16(xmm_high, xmm_zero);
2401 3208610 : __m128i xmm3 = _mm_unpackhi_epi16(xmm_high, xmm_zero);
2402 3208610 : __m128 xmm0_f = _mm_cvtepi32_ps(xmm0);
2403 3208610 : __m128 xmm1_f = _mm_cvtepi32_ps(xmm1);
2404 3208610 : __m128 xmm2_f = _mm_cvtepi32_ps(xmm2);
2405 3208610 : __m128 xmm3_f = _mm_cvtepi32_ps(xmm3);
2406 3208610 : _mm_storeu_ps(reinterpret_cast<float *>(pabyDstDataPtr + n * 4),
2407 : xmm0_f);
2408 : _mm_storeu_ps(
2409 3208610 : reinterpret_cast<float *>(pabyDstDataPtr + n * 4 + 16), xmm1_f);
2410 : _mm_storeu_ps(
2411 3208610 : reinterpret_cast<float *>(pabyDstDataPtr + n * 4 + 32), xmm2_f);
2412 : _mm_storeu_ps(
2413 3208610 : reinterpret_cast<float *>(pabyDstDataPtr + n * 4 + 48), xmm3_f);
2414 : }
2415 501780 : for (; n < nWordCount; n++)
2416 : {
2417 386710 : pDstData[n] = pSrcData[n];
2418 115070 : }
2419 : }
2420 : else
2421 : {
2422 2360680 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2423 : nDstPixelStride, nWordCount);
2424 : }
2425 2475750 : }
2426 :
2427 : template <>
2428 152377 : CPL_NOINLINE void GDALCopyWordsT(const GByte *const CPL_RESTRICT pSrcData,
2429 : int nSrcPixelStride,
2430 : double *const CPL_RESTRICT pDstData,
2431 : int nDstPixelStride, GPtrDiff_t nWordCount)
2432 : {
2433 152377 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2434 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2435 : {
2436 129021 : decltype(nWordCount) n = 0;
2437 129021 : const __m128i xmm_zero = _mm_setzero_si128();
2438 129021 : GByte *CPL_RESTRICT pabyDstDataPtr =
2439 : reinterpret_cast<GByte *>(pDstData);
2440 1431460 : for (; n < nWordCount - 15; n += 16)
2441 : {
2442 1302440 : __m128i xmm = _mm_loadu_si128(
2443 1302440 : reinterpret_cast<const __m128i *>(pSrcData + n));
2444 1302440 : __m128i xmm_low = _mm_unpacklo_epi8(xmm, xmm_zero);
2445 1302440 : __m128i xmm_high = _mm_unpackhi_epi8(xmm, xmm_zero);
2446 1302440 : __m128i xmm0 = _mm_unpacklo_epi16(xmm_low, xmm_zero);
2447 1302440 : __m128i xmm1 = _mm_unpackhi_epi16(xmm_low, xmm_zero);
2448 1302440 : __m128i xmm2 = _mm_unpacklo_epi16(xmm_high, xmm_zero);
2449 1302440 : __m128i xmm3 = _mm_unpackhi_epi16(xmm_high, xmm_zero);
2450 :
2451 : #if defined(__AVX2__) && defined(slightly_slower_than_SSE2)
2452 : _mm256_storeu_pd(reinterpret_cast<double *>(pabyDstDataPtr + n * 8),
2453 : _mm256_cvtepi32_pd(xmm0));
2454 : _mm256_storeu_pd(
2455 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 32),
2456 : _mm256_cvtepi32_pd(xmm1));
2457 : _mm256_storeu_pd(
2458 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 64),
2459 : _mm256_cvtepi32_pd(xmm2));
2460 : _mm256_storeu_pd(
2461 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 96),
2462 : _mm256_cvtepi32_pd(xmm3));
2463 : #else
2464 1302440 : __m128d xmm0_low_d = _mm_cvtepi32_pd(xmm0);
2465 1302440 : __m128d xmm1_low_d = _mm_cvtepi32_pd(xmm1);
2466 1302440 : __m128d xmm2_low_d = _mm_cvtepi32_pd(xmm2);
2467 1302440 : __m128d xmm3_low_d = _mm_cvtepi32_pd(xmm3);
2468 1302440 : xmm0 = _mm_srli_si128(xmm0, 8);
2469 1302440 : xmm1 = _mm_srli_si128(xmm1, 8);
2470 1302440 : xmm2 = _mm_srli_si128(xmm2, 8);
2471 1302440 : xmm3 = _mm_srli_si128(xmm3, 8);
2472 1302440 : __m128d xmm0_high_d = _mm_cvtepi32_pd(xmm0);
2473 1302440 : __m128d xmm1_high_d = _mm_cvtepi32_pd(xmm1);
2474 1302440 : __m128d xmm2_high_d = _mm_cvtepi32_pd(xmm2);
2475 1302440 : __m128d xmm3_high_d = _mm_cvtepi32_pd(xmm3);
2476 :
2477 1302440 : _mm_storeu_pd(reinterpret_cast<double *>(pabyDstDataPtr + n * 8),
2478 : xmm0_low_d);
2479 : _mm_storeu_pd(
2480 1302440 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 16),
2481 : xmm0_high_d);
2482 : _mm_storeu_pd(
2483 1302440 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 32),
2484 : xmm1_low_d);
2485 : _mm_storeu_pd(
2486 1302440 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 48),
2487 : xmm1_high_d);
2488 : _mm_storeu_pd(
2489 1302440 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 64),
2490 : xmm2_low_d);
2491 : _mm_storeu_pd(
2492 1302440 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 80),
2493 : xmm2_high_d);
2494 : _mm_storeu_pd(
2495 1302440 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 96),
2496 : xmm3_low_d);
2497 : _mm_storeu_pd(
2498 1302440 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 112),
2499 : xmm3_high_d);
2500 : #endif
2501 : }
2502 252479 : for (; n < nWordCount; n++)
2503 : {
2504 123458 : pDstData[n] = pSrcData[n];
2505 129021 : }
2506 : }
2507 : else
2508 : {
2509 23356 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2510 : nDstPixelStride, nWordCount);
2511 : }
2512 152377 : }
2513 :
2514 : template <>
2515 147 : CPL_NOINLINE void GDALCopyWordsT(const uint8_t *const CPL_RESTRICT pSrcData,
2516 : int nSrcPixelStride,
2517 : int8_t *const CPL_RESTRICT pDstData,
2518 : int nDstPixelStride, GPtrDiff_t nWordCount)
2519 : {
2520 147 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2521 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2522 : {
2523 141 : decltype(nWordCount) n = 0;
2524 141 : const __m128i xmm_127 = _mm_set1_epi8(127);
2525 145 : for (; n < nWordCount - 31; n += 32)
2526 : {
2527 8 : __m128i xmm0 = _mm_loadu_si128(
2528 4 : reinterpret_cast<const __m128i *>(pSrcData + n));
2529 4 : __m128i xmm1 = _mm_loadu_si128(
2530 4 : reinterpret_cast<const __m128i *>(pSrcData + n + 16));
2531 4 : xmm0 = _mm_min_epu8(xmm0, xmm_127);
2532 4 : xmm1 = _mm_min_epu8(xmm1, xmm_127);
2533 4 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDstData + n), xmm0);
2534 4 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDstData + n + 16),
2535 : xmm1);
2536 : }
2537 2421 : for (; n < nWordCount; n++)
2538 : {
2539 2280 : pDstData[n] =
2540 2280 : pSrcData[n] >= 127 ? 127 : static_cast<int8_t>(pSrcData[n]);
2541 141 : }
2542 : }
2543 : else
2544 : {
2545 6 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2546 : nDstPixelStride, nWordCount);
2547 : }
2548 147 : }
2549 :
2550 : template <>
2551 82 : CPL_NOINLINE void GDALCopyWordsT(const int8_t *const CPL_RESTRICT pSrcData,
2552 : int nSrcPixelStride,
2553 : uint8_t *const CPL_RESTRICT pDstData,
2554 : int nDstPixelStride, GPtrDiff_t nWordCount)
2555 : {
2556 82 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2557 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2558 : {
2559 56 : decltype(nWordCount) n = 0;
2560 : #if !(defined(__SSE4_1__) || defined(USE_NEON_OPTIMIZATIONS))
2561 56 : const __m128i xmm_INT8_to_UINT8 = _mm_set1_epi8(-128);
2562 : #endif
2563 117 : for (; n < nWordCount - 31; n += 32)
2564 : {
2565 122 : __m128i xmm0 = _mm_loadu_si128(
2566 61 : reinterpret_cast<const __m128i *>(pSrcData + n));
2567 61 : __m128i xmm1 = _mm_loadu_si128(
2568 61 : reinterpret_cast<const __m128i *>(pSrcData + n + 16));
2569 : #if defined(__SSE4_1__) || defined(USE_NEON_OPTIMIZATIONS)
2570 : xmm0 = _mm_max_epi8(xmm0, _mm_setzero_si128());
2571 : xmm1 = _mm_max_epi8(xmm1, _mm_setzero_si128());
2572 : #else
2573 61 : xmm0 = _mm_add_epi8(xmm0, xmm_INT8_to_UINT8);
2574 61 : xmm1 = _mm_add_epi8(xmm1, xmm_INT8_to_UINT8);
2575 61 : xmm0 = _mm_max_epu8(xmm0, xmm_INT8_to_UINT8);
2576 61 : xmm1 = _mm_max_epu8(xmm1, xmm_INT8_to_UINT8);
2577 61 : xmm0 = _mm_sub_epi8(xmm0, xmm_INT8_to_UINT8);
2578 61 : xmm1 = _mm_sub_epi8(xmm1, xmm_INT8_to_UINT8);
2579 : #endif
2580 61 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDstData + n), xmm0);
2581 61 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDstData + n + 16),
2582 : xmm1);
2583 : }
2584 352 : for (; n < nWordCount; n++)
2585 : {
2586 296 : pDstData[n] =
2587 296 : pSrcData[n] < 0 ? 0 : static_cast<uint8_t>(pSrcData[n]);
2588 56 : }
2589 : }
2590 : else
2591 : {
2592 26 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2593 : nDstPixelStride, nWordCount);
2594 : }
2595 82 : }
2596 :
2597 : template <>
2598 6037 : CPL_NOINLINE void GDALCopyWordsT(const uint16_t *const CPL_RESTRICT pSrcData,
2599 : int nSrcPixelStride,
2600 : uint8_t *const CPL_RESTRICT pDstData,
2601 : int nDstPixelStride, GPtrDiff_t nWordCount)
2602 : {
2603 6037 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2604 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2605 : {
2606 5062 : decltype(nWordCount) n = 0;
2607 : #if defined(__SSE4_1__) || defined(USE_NEON_OPTIMIZATIONS)
2608 : const auto xmm_MAX_INT16 = _mm_set1_epi16(32767);
2609 : #else
2610 : // In SSE2, min_epu16 does not exist, so shift from
2611 : // UInt16 to SInt16 to be able to use min_epi16
2612 5062 : const __m128i xmm_UINT16_to_INT16 = _mm_set1_epi16(-32768);
2613 5062 : const __m128i xmm_m255_shifted = _mm_set1_epi16(255 - 32768);
2614 : #endif
2615 71888 : for (; n < nWordCount - 15; n += 16)
2616 : {
2617 133652 : __m128i xmm0 = _mm_loadu_si128(
2618 66826 : reinterpret_cast<const __m128i *>(pSrcData + n));
2619 66826 : __m128i xmm1 = _mm_loadu_si128(
2620 66826 : reinterpret_cast<const __m128i *>(pSrcData + n + 8));
2621 : #if defined(__SSE4_1__) || defined(USE_NEON_OPTIMIZATIONS)
2622 : xmm0 = _mm_min_epu16(xmm0, xmm_MAX_INT16);
2623 : xmm1 = _mm_min_epu16(xmm1, xmm_MAX_INT16);
2624 : #else
2625 66826 : xmm0 = _mm_add_epi16(xmm0, xmm_UINT16_to_INT16);
2626 66826 : xmm1 = _mm_add_epi16(xmm1, xmm_UINT16_to_INT16);
2627 66826 : xmm0 = _mm_min_epi16(xmm0, xmm_m255_shifted);
2628 66826 : xmm1 = _mm_min_epi16(xmm1, xmm_m255_shifted);
2629 66826 : xmm0 = _mm_sub_epi16(xmm0, xmm_UINT16_to_INT16);
2630 66826 : xmm1 = _mm_sub_epi16(xmm1, xmm_UINT16_to_INT16);
2631 : #endif
2632 66826 : xmm0 = _mm_packus_epi16(xmm0, xmm1);
2633 66826 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDstData + n), xmm0);
2634 : }
2635 16403 : for (; n < nWordCount; n++)
2636 : {
2637 11341 : pDstData[n] =
2638 11341 : pSrcData[n] >= 255 ? 255 : static_cast<uint8_t>(pSrcData[n]);
2639 5062 : }
2640 : }
2641 : else
2642 : {
2643 975 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2644 : nDstPixelStride, nWordCount);
2645 : }
2646 6037 : }
2647 :
2648 : template <>
2649 46 : CPL_NOINLINE void GDALCopyWordsT(const uint16_t *const CPL_RESTRICT pSrcData,
2650 : int nSrcPixelStride,
2651 : int16_t *const CPL_RESTRICT pDstData,
2652 : int nDstPixelStride, GPtrDiff_t nWordCount)
2653 : {
2654 46 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2655 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2656 : {
2657 40 : decltype(nWordCount) n = 0;
2658 : #if defined(__SSE4_1__) || defined(USE_NEON_OPTIMIZATIONS)
2659 : const __m128i xmm_MAX_INT16 = _mm_set1_epi16(32767);
2660 : #else
2661 : // In SSE2, min_epu16 does not exist, so shift from
2662 : // UInt16 to SInt16 to be able to use min_epi16
2663 40 : const __m128i xmm_UINT16_to_INT16 = _mm_set1_epi16(-32768);
2664 40 : const __m128i xmm_32767_shifted = _mm_set1_epi16(32767 - 32768);
2665 : #endif
2666 169 : for (; n < nWordCount - 15; n += 16)
2667 : {
2668 258 : __m128i xmm0 = _mm_loadu_si128(
2669 129 : reinterpret_cast<const __m128i *>(pSrcData + n));
2670 129 : __m128i xmm1 = _mm_loadu_si128(
2671 129 : reinterpret_cast<const __m128i *>(pSrcData + n + 8));
2672 : #if defined(__SSE4_1__) || defined(USE_NEON_OPTIMIZATIONS)
2673 : xmm0 = _mm_min_epu16(xmm0, xmm_MAX_INT16);
2674 : xmm1 = _mm_min_epu16(xmm1, xmm_MAX_INT16);
2675 : #else
2676 129 : xmm0 = _mm_add_epi16(xmm0, xmm_UINT16_to_INT16);
2677 129 : xmm1 = _mm_add_epi16(xmm1, xmm_UINT16_to_INT16);
2678 129 : xmm0 = _mm_min_epi16(xmm0, xmm_32767_shifted);
2679 129 : xmm1 = _mm_min_epi16(xmm1, xmm_32767_shifted);
2680 129 : xmm0 = _mm_sub_epi16(xmm0, xmm_UINT16_to_INT16);
2681 129 : xmm1 = _mm_sub_epi16(xmm1, xmm_UINT16_to_INT16);
2682 : #endif
2683 129 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDstData + n), xmm0);
2684 129 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDstData + n + 8),
2685 : xmm1);
2686 : }
2687 191 : for (; n < nWordCount; n++)
2688 : {
2689 282 : pDstData[n] = pSrcData[n] >= 32767
2690 : ? 32767
2691 131 : : static_cast<int16_t>(pSrcData[n]);
2692 40 : }
2693 : }
2694 : else
2695 : {
2696 6 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2697 : nDstPixelStride, nWordCount);
2698 : }
2699 46 : }
2700 :
2701 : template <>
2702 135 : CPL_NOINLINE void GDALCopyWordsT(const int16_t *const CPL_RESTRICT pSrcData,
2703 : int nSrcPixelStride,
2704 : uint16_t *const CPL_RESTRICT pDstData,
2705 : int nDstPixelStride, GPtrDiff_t nWordCount)
2706 : {
2707 135 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2708 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2709 : {
2710 92 : decltype(nWordCount) n = 0;
2711 92 : const __m128i xmm_zero = _mm_setzero_si128();
2712 277 : for (; n < nWordCount - 15; n += 16)
2713 : {
2714 370 : __m128i xmm0 = _mm_loadu_si128(
2715 185 : reinterpret_cast<const __m128i *>(pSrcData + n));
2716 185 : __m128i xmm1 = _mm_loadu_si128(
2717 185 : reinterpret_cast<const __m128i *>(pSrcData + n + 8));
2718 185 : xmm0 = _mm_max_epi16(xmm0, xmm_zero);
2719 185 : xmm1 = _mm_max_epi16(xmm1, xmm_zero);
2720 185 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDstData + n), xmm0);
2721 185 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDstData + n + 8),
2722 : xmm1);
2723 : }
2724 468 : for (; n < nWordCount; n++)
2725 : {
2726 376 : pDstData[n] =
2727 376 : pSrcData[n] < 0 ? 0 : static_cast<uint16_t>(pSrcData[n]);
2728 92 : }
2729 : }
2730 : else
2731 : {
2732 43 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2733 : nDstPixelStride, nWordCount);
2734 : }
2735 135 : }
2736 :
2737 : #if defined(__SSE4_1__) || defined(USE_NEON_OPTIMIZATIONS)
2738 :
2739 : template <>
2740 : CPL_NOINLINE void GDALCopyWordsT(const uint32_t *const CPL_RESTRICT pSrcData,
2741 : int nSrcPixelStride,
2742 : int32_t *const CPL_RESTRICT pDstData,
2743 : int nDstPixelStride, GPtrDiff_t nWordCount)
2744 : {
2745 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2746 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2747 : {
2748 : decltype(nWordCount) n = 0;
2749 : const __m128i xmm_MAX_INT = _mm_set1_epi32(INT_MAX);
2750 : for (; n < nWordCount - 8; n += 7)
2751 : {
2752 : __m128i xmm0 = _mm_loadu_si128(
2753 : reinterpret_cast<const __m128i *>(pSrcData + n));
2754 : __m128i xmm1 = _mm_loadu_si128(
2755 : reinterpret_cast<const __m128i *>(pSrcData + n + 4));
2756 : xmm0 = _mm_min_epu32(xmm0, xmm_MAX_INT);
2757 : xmm1 = _mm_min_epu32(xmm1, xmm_MAX_INT);
2758 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDstData + n), xmm0);
2759 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDstData + n + 4),
2760 : xmm1);
2761 : }
2762 : for (; n < nWordCount; n++)
2763 : {
2764 : pDstData[n] = pSrcData[n] >= INT_MAX
2765 : ? INT_MAX
2766 : : static_cast<int32_t>(pSrcData[n]);
2767 : }
2768 : }
2769 : else
2770 : {
2771 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2772 : nDstPixelStride, nWordCount);
2773 : }
2774 : }
2775 :
2776 : template <>
2777 : CPL_NOINLINE void GDALCopyWordsT(const int32_t *const CPL_RESTRICT pSrcData,
2778 : int nSrcPixelStride,
2779 : uint32_t *const CPL_RESTRICT pDstData,
2780 : int nDstPixelStride, GPtrDiff_t nWordCount)
2781 : {
2782 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2783 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2784 : {
2785 : decltype(nWordCount) n = 0;
2786 : const __m128i xmm_zero = _mm_setzero_si128();
2787 : for (; n < nWordCount - 7; n += 8)
2788 : {
2789 : __m128i xmm0 = _mm_loadu_si128(
2790 : reinterpret_cast<const __m128i *>(pSrcData + n));
2791 : __m128i xmm1 = _mm_loadu_si128(
2792 : reinterpret_cast<const __m128i *>(pSrcData + n + 4));
2793 : xmm0 = _mm_max_epi32(xmm0, xmm_zero);
2794 : xmm1 = _mm_max_epi32(xmm1, xmm_zero);
2795 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDstData + n), xmm0);
2796 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDstData + n + 4),
2797 : xmm1);
2798 : }
2799 : for (; n < nWordCount; n++)
2800 : {
2801 : pDstData[n] =
2802 : pSrcData[n] < 0 ? 0 : static_cast<uint32_t>(pSrcData[n]);
2803 : }
2804 : }
2805 : else
2806 : {
2807 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2808 : nDstPixelStride, nWordCount);
2809 : }
2810 : }
2811 :
2812 : #endif // defined(__SSE4_1__) || defined(USE_NEON_OPTIMIZATIONS)
2813 :
2814 : template <>
2815 339 : CPL_NOINLINE void GDALCopyWordsT(const uint16_t *const CPL_RESTRICT pSrcData,
2816 : int nSrcPixelStride,
2817 : float *const CPL_RESTRICT pDstData,
2818 : int nDstPixelStride, GPtrDiff_t nWordCount)
2819 : {
2820 339 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2821 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2822 : {
2823 333 : decltype(nWordCount) n = 0;
2824 333 : const __m128i xmm_zero = _mm_setzero_si128();
2825 333 : GByte *CPL_RESTRICT pabyDstDataPtr =
2826 : reinterpret_cast<GByte *>(pDstData);
2827 1472 : for (; n < nWordCount - 7; n += 8)
2828 : {
2829 1139 : __m128i xmm = _mm_loadu_si128(
2830 1139 : reinterpret_cast<const __m128i *>(pSrcData + n));
2831 1139 : __m128i xmm0 = _mm_unpacklo_epi16(xmm, xmm_zero);
2832 1139 : __m128i xmm1 = _mm_unpackhi_epi16(xmm, xmm_zero);
2833 1139 : __m128 xmm0_f = _mm_cvtepi32_ps(xmm0);
2834 1139 : __m128 xmm1_f = _mm_cvtepi32_ps(xmm1);
2835 1139 : _mm_storeu_ps(reinterpret_cast<float *>(pabyDstDataPtr + n * 4),
2836 : xmm0_f);
2837 : _mm_storeu_ps(
2838 1139 : reinterpret_cast<float *>(pabyDstDataPtr + n * 4 + 16), xmm1_f);
2839 : }
2840 1099 : for (; n < nWordCount; n++)
2841 : {
2842 766 : pDstData[n] = pSrcData[n];
2843 333 : }
2844 : }
2845 : else
2846 : {
2847 6 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2848 : nDstPixelStride, nWordCount);
2849 : }
2850 339 : }
2851 :
2852 : template <>
2853 1073480 : CPL_NOINLINE void GDALCopyWordsT(const int16_t *const CPL_RESTRICT pSrcData,
2854 : int nSrcPixelStride,
2855 : float *const CPL_RESTRICT pDstData,
2856 : int nDstPixelStride, GPtrDiff_t nWordCount)
2857 : {
2858 1073480 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2859 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2860 : {
2861 83576 : decltype(nWordCount) n = 0;
2862 83576 : GByte *CPL_RESTRICT pabyDstDataPtr =
2863 : reinterpret_cast<GByte *>(pDstData);
2864 565231 : for (; n < nWordCount - 7; n += 8)
2865 : {
2866 481655 : __m128i xmm = _mm_loadu_si128(
2867 481655 : reinterpret_cast<const __m128i *>(pSrcData + n));
2868 481655 : const auto sign = _mm_srai_epi16(xmm, 15);
2869 481655 : __m128i xmm0 = _mm_unpacklo_epi16(xmm, sign);
2870 481655 : __m128i xmm1 = _mm_unpackhi_epi16(xmm, sign);
2871 481655 : __m128 xmm0_f = _mm_cvtepi32_ps(xmm0);
2872 481655 : __m128 xmm1_f = _mm_cvtepi32_ps(xmm1);
2873 481655 : _mm_storeu_ps(reinterpret_cast<float *>(pabyDstDataPtr + n * 4),
2874 : xmm0_f);
2875 : _mm_storeu_ps(
2876 481655 : reinterpret_cast<float *>(pabyDstDataPtr + n * 4 + 16), xmm1_f);
2877 : }
2878 244165 : for (; n < nWordCount; n++)
2879 : {
2880 160589 : pDstData[n] = pSrcData[n];
2881 83576 : }
2882 : }
2883 : else
2884 : {
2885 989901 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2886 : nDstPixelStride, nWordCount);
2887 : }
2888 1073480 : }
2889 :
2890 : template <>
2891 381 : CPL_NOINLINE void GDALCopyWordsT(const uint16_t *const CPL_RESTRICT pSrcData,
2892 : int nSrcPixelStride,
2893 : double *const CPL_RESTRICT pDstData,
2894 : int nDstPixelStride, GPtrDiff_t nWordCount)
2895 : {
2896 381 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2897 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2898 : {
2899 269 : decltype(nWordCount) n = 0;
2900 269 : const __m128i xmm_zero = _mm_setzero_si128();
2901 269 : GByte *CPL_RESTRICT pabyDstDataPtr =
2902 : reinterpret_cast<GByte *>(pDstData);
2903 713 : for (; n < nWordCount - 7; n += 8)
2904 : {
2905 444 : __m128i xmm = _mm_loadu_si128(
2906 444 : reinterpret_cast<const __m128i *>(pSrcData + n));
2907 444 : __m128i xmm0 = _mm_unpacklo_epi16(xmm, xmm_zero);
2908 444 : __m128i xmm1 = _mm_unpackhi_epi16(xmm, xmm_zero);
2909 :
2910 444 : __m128d xmm0_low_d = _mm_cvtepi32_pd(xmm0);
2911 444 : __m128d xmm1_low_d = _mm_cvtepi32_pd(xmm1);
2912 444 : xmm0 = _mm_srli_si128(xmm0, 8);
2913 444 : xmm1 = _mm_srli_si128(xmm1, 8);
2914 444 : __m128d xmm0_high_d = _mm_cvtepi32_pd(xmm0);
2915 444 : __m128d xmm1_high_d = _mm_cvtepi32_pd(xmm1);
2916 :
2917 444 : _mm_storeu_pd(reinterpret_cast<double *>(pabyDstDataPtr + n * 8),
2918 : xmm0_low_d);
2919 : _mm_storeu_pd(
2920 444 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 16),
2921 : xmm0_high_d);
2922 : _mm_storeu_pd(
2923 444 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 32),
2924 : xmm1_low_d);
2925 : _mm_storeu_pd(
2926 444 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 48),
2927 : xmm1_high_d);
2928 : }
2929 918 : for (; n < nWordCount; n++)
2930 : {
2931 649 : pDstData[n] = pSrcData[n];
2932 269 : }
2933 : }
2934 : else
2935 : {
2936 112 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2937 : nDstPixelStride, nWordCount);
2938 : }
2939 381 : }
2940 :
2941 : template <>
2942 2760310 : CPL_NOINLINE void GDALCopyWordsT(const int16_t *const CPL_RESTRICT pSrcData,
2943 : int nSrcPixelStride,
2944 : double *const CPL_RESTRICT pDstData,
2945 : int nDstPixelStride, GPtrDiff_t nWordCount)
2946 : {
2947 2760310 : if (nSrcPixelStride == static_cast<int>(sizeof(*pSrcData)) &&
2948 : nDstPixelStride == static_cast<int>(sizeof(*pDstData)))
2949 : {
2950 34617 : decltype(nWordCount) n = 0;
2951 34617 : GByte *CPL_RESTRICT pabyDstDataPtr =
2952 : reinterpret_cast<GByte *>(pDstData);
2953 401078 : for (; n < nWordCount - 7; n += 8)
2954 : {
2955 366670 : __m128i xmm = _mm_loadu_si128(
2956 366670 : reinterpret_cast<const __m128i *>(pSrcData + n));
2957 366487 : const auto sign = _mm_srai_epi16(xmm, 15);
2958 366477 : __m128i xmm0 = _mm_unpacklo_epi16(xmm, sign);
2959 366356 : __m128i xmm1 = _mm_unpackhi_epi16(xmm, sign);
2960 :
2961 366353 : __m128d xmm0_low_d = _mm_cvtepi32_pd(xmm0);
2962 366187 : __m128d xmm1_low_d = _mm_cvtepi32_pd(xmm1);
2963 366187 : xmm0 = _mm_srli_si128(xmm0, 8);
2964 366285 : xmm1 = _mm_srli_si128(xmm1, 8);
2965 366466 : __m128d xmm0_high_d = _mm_cvtepi32_pd(xmm0);
2966 366461 : __m128d xmm1_high_d = _mm_cvtepi32_pd(xmm1);
2967 :
2968 366461 : _mm_storeu_pd(reinterpret_cast<double *>(pabyDstDataPtr + n * 8),
2969 : xmm0_low_d);
2970 : _mm_storeu_pd(
2971 366461 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 16),
2972 : xmm0_high_d);
2973 : _mm_storeu_pd(
2974 366461 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 32),
2975 : xmm1_low_d);
2976 : _mm_storeu_pd(
2977 366461 : reinterpret_cast<double *>(pabyDstDataPtr + n * 8 + 48),
2978 : xmm1_high_d);
2979 : }
2980 253040 : for (; n < nWordCount; n++)
2981 : {
2982 218632 : pDstData[n] = pSrcData[n];
2983 34408 : }
2984 : }
2985 : else
2986 : {
2987 2725700 : GDALCopyWordsGenericT(pSrcData, nSrcPixelStride, pDstData,
2988 : nDstPixelStride, nWordCount);
2989 : }
2990 2760100 : }
2991 :
2992 : template <>
2993 4420610 : CPL_NOINLINE void GDALCopyWordsT(const double *const CPL_RESTRICT pSrcData,
2994 : int nSrcPixelStride,
2995 : GByte *const CPL_RESTRICT pDstData,
2996 : int nDstPixelStride, GPtrDiff_t nWordCount)
2997 : {
2998 4420610 : GDALCopyWordsT_8atatime(pSrcData, nSrcPixelStride, pDstData,
2999 : nDstPixelStride, nWordCount);
3000 4420650 : }
3001 :
3002 : template <>
3003 38365 : CPL_NOINLINE void GDALCopyWordsT(const double *const CPL_RESTRICT pSrcData,
3004 : int nSrcPixelStride,
3005 : GUInt16 *const CPL_RESTRICT pDstData,
3006 : int nDstPixelStride, GPtrDiff_t nWordCount)
3007 : {
3008 38365 : GDALCopyWordsT_8atatime(pSrcData, nSrcPixelStride, pDstData,
3009 : nDstPixelStride, nWordCount);
3010 38365 : }
3011 :
3012 : template <>
3013 54573 : CPL_NOINLINE void GDALCopyWordsT(const float *const CPL_RESTRICT pSrcData,
3014 : int nSrcPixelStride,
3015 : double *const CPL_RESTRICT pDstData,
3016 : int nDstPixelStride, GPtrDiff_t nWordCount)
3017 : {
3018 54573 : GDALCopyWordsT_8atatime(pSrcData, nSrcPixelStride, pDstData,
3019 : nDstPixelStride, nWordCount);
3020 54573 : }
3021 :
3022 : template <>
3023 122650 : CPL_NOINLINE void GDALCopyWordsT(const double *const CPL_RESTRICT pSrcData,
3024 : int nSrcPixelStride,
3025 : float *const CPL_RESTRICT pDstData,
3026 : int nDstPixelStride, GPtrDiff_t nWordCount)
3027 : {
3028 122650 : GDALCopyWordsT_8atatime(pSrcData, nSrcPixelStride, pDstData,
3029 : nDstPixelStride, nWordCount);
3030 122652 : }
3031 :
3032 : template <>
3033 407 : CPL_NOINLINE void GDALCopyWordsT(const GFloat16 *const CPL_RESTRICT pSrcData,
3034 : int nSrcPixelStride,
3035 : float *const CPL_RESTRICT pDstData,
3036 : int nDstPixelStride, GPtrDiff_t nWordCount)
3037 : {
3038 407 : GDALCopyWordsT_8atatime(pSrcData, nSrcPixelStride, pDstData,
3039 : nDstPixelStride, nWordCount);
3040 407 : }
3041 :
3042 : template <>
3043 532 : CPL_NOINLINE void GDALCopyWordsT(const GFloat16 *const CPL_RESTRICT pSrcData,
3044 : int nSrcPixelStride,
3045 : double *const CPL_RESTRICT pDstData,
3046 : int nDstPixelStride, GPtrDiff_t nWordCount)
3047 : {
3048 532 : GDALCopyWordsT_8atatime(pSrcData, nSrcPixelStride, pDstData,
3049 : nDstPixelStride, nWordCount);
3050 532 : }
3051 :
3052 : #ifdef __F16C__
3053 :
3054 : template <>
3055 : CPL_NOINLINE void GDALCopyWordsT(const float *const CPL_RESTRICT pSrcData,
3056 : int nSrcPixelStride,
3057 : GFloat16 *const CPL_RESTRICT pDstData,
3058 : int nDstPixelStride, GPtrDiff_t nWordCount)
3059 : {
3060 : GDALCopyWordsT_8atatime(pSrcData, nSrcPixelStride, pDstData,
3061 : nDstPixelStride, nWordCount);
3062 : }
3063 :
3064 : template <>
3065 : CPL_NOINLINE void GDALCopyWordsT(const double *const CPL_RESTRICT pSrcData,
3066 : int nSrcPixelStride,
3067 : GFloat16 *const CPL_RESTRICT pDstData,
3068 : int nDstPixelStride, GPtrDiff_t nWordCount)
3069 : {
3070 : GDALCopyWordsT_8atatime(pSrcData, nSrcPixelStride, pDstData,
3071 : nDstPixelStride, nWordCount);
3072 : }
3073 :
3074 : #endif // __F16C__
3075 :
3076 : #endif // HAVE_SSE2
3077 :
3078 : template <>
3079 296608 : CPL_NOINLINE void GDALCopyWordsT(const float *const CPL_RESTRICT pSrcData,
3080 : int nSrcPixelStride,
3081 : GByte *const CPL_RESTRICT pDstData,
3082 : int nDstPixelStride, GPtrDiff_t nWordCount)
3083 : {
3084 296608 : GDALCopyWordsT_8atatime(pSrcData, nSrcPixelStride, pDstData,
3085 : nDstPixelStride, nWordCount);
3086 296616 : }
3087 :
3088 : template <>
3089 15775 : CPL_NOINLINE void GDALCopyWordsT(const float *const CPL_RESTRICT pSrcData,
3090 : int nSrcPixelStride,
3091 : GInt16 *const CPL_RESTRICT pDstData,
3092 : int nDstPixelStride, GPtrDiff_t nWordCount)
3093 : {
3094 15775 : GDALCopyWordsT_8atatime(pSrcData, nSrcPixelStride, pDstData,
3095 : nDstPixelStride, nWordCount);
3096 15775 : }
3097 :
3098 : template <>
3099 61707 : CPL_NOINLINE void GDALCopyWordsT(const float *const CPL_RESTRICT pSrcData,
3100 : int nSrcPixelStride,
3101 : GUInt16 *const CPL_RESTRICT pDstData,
3102 : int nDstPixelStride, GPtrDiff_t nWordCount)
3103 : {
3104 61707 : GDALCopyWordsT_8atatime(pSrcData, nSrcPixelStride, pDstData,
3105 : nDstPixelStride, nWordCount);
3106 61707 : }
3107 :
3108 : /************************************************************************/
3109 : /* GDALCopyWordsComplexT() */
3110 : /************************************************************************/
3111 : /**
3112 : * Template function, used to copy data from pSrcData into buffer
3113 : * pDstData, with stride nSrcPixelStride in the source data and
3114 : * stride nDstPixelStride in the destination data. Deals with the
3115 : * complex case, where input is complex and output is complex.
3116 : *
3117 : * @param pSrcData the source data buffer
3118 : * @param nSrcPixelStride the stride, in the buffer pSrcData for pixels
3119 : * of interest.
3120 : * @param pDstData the destination buffer.
3121 : * @param nDstPixelStride the stride in the buffer pDstData for pixels of
3122 : * interest.
3123 : * @param nWordCount the total number of pixel words to copy
3124 : *
3125 : */
3126 : template <class Tin, class Tout>
3127 97363 : inline void GDALCopyWordsComplexT(const Tin *const CPL_RESTRICT pSrcData,
3128 : int nSrcPixelStride,
3129 : Tout *const CPL_RESTRICT pDstData,
3130 : int nDstPixelStride, GPtrDiff_t nWordCount)
3131 : {
3132 97363 : decltype(nWordCount) nDstOffset = 0;
3133 97363 : const char *const pSrcDataPtr = reinterpret_cast<const char *>(pSrcData);
3134 97363 : char *const pDstDataPtr = reinterpret_cast<char *>(pDstData);
3135 :
3136 5506161 : for (decltype(nWordCount) n = 0; n < nWordCount; n++)
3137 : {
3138 5408793 : const Tin *const pPixelIn =
3139 5408793 : reinterpret_cast<const Tin *>(pSrcDataPtr + n * nSrcPixelStride);
3140 5408793 : Tout *const pPixelOut =
3141 5408793 : reinterpret_cast<Tout *>(pDstDataPtr + nDstOffset);
3142 :
3143 5408793 : GDALCopyWord(pPixelIn[0], pPixelOut[0]);
3144 5408793 : GDALCopyWord(pPixelIn[1], pPixelOut[1]);
3145 :
3146 5408793 : nDstOffset += nDstPixelStride;
3147 : }
3148 97363 : }
3149 :
3150 : /************************************************************************/
3151 : /* GDALCopyWordsComplexOutT() */
3152 : /************************************************************************/
3153 : /**
3154 : * Template function, used to copy data from pSrcData into buffer
3155 : * pDstData, with stride nSrcPixelStride in the source data and
3156 : * stride nDstPixelStride in the destination data. Deals with the
3157 : * case where the value is real coming in, but complex going out.
3158 : *
3159 : * @param pSrcData the source data buffer
3160 : * @param nSrcPixelStride the stride, in the buffer pSrcData for pixels
3161 : * of interest, in bytes.
3162 : * @param pDstData the destination buffer.
3163 : * @param nDstPixelStride the stride in the buffer pDstData for pixels of
3164 : * interest, in bytes.
3165 : * @param nWordCount the total number of pixel words to copy
3166 : *
3167 : */
3168 : template <class Tin, class Tout>
3169 3877 : inline void GDALCopyWordsComplexOutT(const Tin *const CPL_RESTRICT pSrcData,
3170 : int nSrcPixelStride,
3171 : Tout *const CPL_RESTRICT pDstData,
3172 : int nDstPixelStride, GPtrDiff_t nWordCount)
3173 : {
3174 3877 : decltype(nWordCount) nDstOffset = 0;
3175 :
3176 3877 : const Tout tOutZero = static_cast<Tout>(0);
3177 :
3178 3877 : const char *const pSrcDataPtr = reinterpret_cast<const char *>(pSrcData);
3179 3877 : char *const pDstDataPtr = reinterpret_cast<char *>(pDstData);
3180 :
3181 1155414 : for (decltype(nWordCount) n = 0; n < nWordCount; n++)
3182 : {
3183 1151537 : const Tin tValue =
3184 1151537 : *reinterpret_cast<const Tin *>(pSrcDataPtr + n * nSrcPixelStride);
3185 1151537 : Tout *const pPixelOut =
3186 1151537 : reinterpret_cast<Tout *>(pDstDataPtr + nDstOffset);
3187 1151537 : GDALCopyWord(tValue, *pPixelOut);
3188 :
3189 1151537 : pPixelOut[1] = tOutZero;
3190 :
3191 1151537 : nDstOffset += nDstPixelStride;
3192 : }
3193 3877 : }
3194 :
3195 : /************************************************************************/
3196 : /* GDALCopyWordsFromT() */
3197 : /************************************************************************/
3198 : /**
3199 : * Template driver function. Given the input type T, call the appropriate
3200 : * GDALCopyWordsT function template for the desired output type. You should
3201 : * never call this function directly (call GDALCopyWords instead).
3202 : *
3203 : * @param pSrcData source data buffer
3204 : * @param nSrcPixelStride pixel stride in input buffer, in pixel words
3205 : * @param bInComplex input is complex
3206 : * @param pDstData destination data buffer
3207 : * @param eDstType destination data type
3208 : * @param nDstPixelStride pixel stride in output buffer, in pixel words
3209 : * @param nWordCount number of pixel words to be copied
3210 : */
3211 : template <class T>
3212 54154740 : inline void GDALCopyWordsFromT(const T *const CPL_RESTRICT pSrcData,
3213 : int nSrcPixelStride, bool bInComplex,
3214 : void *CPL_RESTRICT pDstData,
3215 : GDALDataType eDstType, int nDstPixelStride,
3216 : GPtrDiff_t nWordCount)
3217 : {
3218 54154740 : switch (eDstType)
3219 : {
3220 4762182 : case GDT_Byte:
3221 4762182 : GDALCopyWordsT(pSrcData, nSrcPixelStride,
3222 : static_cast<unsigned char *>(pDstData),
3223 : nDstPixelStride, nWordCount);
3224 4762255 : break;
3225 752 : case GDT_Int8:
3226 752 : GDALCopyWordsT(pSrcData, nSrcPixelStride,
3227 : static_cast<signed char *>(pDstData),
3228 : nDstPixelStride, nWordCount);
3229 752 : break;
3230 140764 : case GDT_UInt16:
3231 140764 : GDALCopyWordsT(pSrcData, nSrcPixelStride,
3232 : static_cast<unsigned short *>(pDstData),
3233 : nDstPixelStride, nWordCount);
3234 140765 : break;
3235 4162845 : case GDT_Int16:
3236 4162845 : GDALCopyWordsT(pSrcData, nSrcPixelStride,
3237 : static_cast<short *>(pDstData), nDstPixelStride,
3238 : nWordCount);
3239 4162845 : break;
3240 22239 : case GDT_UInt32:
3241 22239 : GDALCopyWordsT(pSrcData, nSrcPixelStride,
3242 : static_cast<unsigned int *>(pDstData),
3243 : nDstPixelStride, nWordCount);
3244 22239 : break;
3245 26047619 : case GDT_Int32:
3246 26047619 : GDALCopyWordsT(pSrcData, nSrcPixelStride,
3247 : static_cast<int *>(pDstData), nDstPixelStride,
3248 : nWordCount);
3249 26043922 : break;
3250 809 : case GDT_UInt64:
3251 809 : GDALCopyWordsT(pSrcData, nSrcPixelStride,
3252 : static_cast<std::uint64_t *>(pDstData),
3253 : nDstPixelStride, nWordCount);
3254 809 : break;
3255 5431 : case GDT_Int64:
3256 5431 : GDALCopyWordsT(pSrcData, nSrcPixelStride,
3257 : static_cast<std::int64_t *>(pDstData),
3258 : nDstPixelStride, nWordCount);
3259 5431 : break;
3260 974 : case GDT_Float16:
3261 974 : GDALCopyWordsT(pSrcData, nSrcPixelStride,
3262 : static_cast<GFloat16 *>(pDstData), nDstPixelStride,
3263 : nWordCount);
3264 974 : break;
3265 3705859 : case GDT_Float32:
3266 3705859 : GDALCopyWordsT(pSrcData, nSrcPixelStride,
3267 : static_cast<float *>(pDstData), nDstPixelStride,
3268 : nWordCount);
3269 3705861 : break;
3270 15203881 : case GDT_Float64:
3271 15203881 : GDALCopyWordsT(pSrcData, nSrcPixelStride,
3272 : static_cast<double *>(pDstData), nDstPixelStride,
3273 : nWordCount);
3274 15203921 : break;
3275 94123 : case GDT_CInt16:
3276 94123 : if (bInComplex)
3277 : {
3278 92870 : GDALCopyWordsComplexT(pSrcData, nSrcPixelStride,
3279 : static_cast<short *>(pDstData),
3280 : nDstPixelStride, nWordCount);
3281 : }
3282 : else // input is not complex, so we need to promote to a complex
3283 : // buffer
3284 : {
3285 1253 : GDALCopyWordsComplexOutT(pSrcData, nSrcPixelStride,
3286 : static_cast<short *>(pDstData),
3287 : nDstPixelStride, nWordCount);
3288 : }
3289 94123 : break;
3290 1040 : case GDT_CInt32:
3291 1040 : if (bInComplex)
3292 : {
3293 409 : GDALCopyWordsComplexT(pSrcData, nSrcPixelStride,
3294 : static_cast<int *>(pDstData),
3295 : nDstPixelStride, nWordCount);
3296 : }
3297 : else // input is not complex, so we need to promote to a complex
3298 : // buffer
3299 : {
3300 631 : GDALCopyWordsComplexOutT(pSrcData, nSrcPixelStride,
3301 : static_cast<int *>(pDstData),
3302 : nDstPixelStride, nWordCount);
3303 : }
3304 1040 : break;
3305 313 : case GDT_CFloat16:
3306 313 : if (bInComplex)
3307 : {
3308 48 : GDALCopyWordsComplexT(pSrcData, nSrcPixelStride,
3309 : static_cast<GFloat16 *>(pDstData),
3310 : nDstPixelStride, nWordCount);
3311 : }
3312 : else // input is not complex, so we need to promote to a complex
3313 : // buffer
3314 : {
3315 265 : GDALCopyWordsComplexOutT(pSrcData, nSrcPixelStride,
3316 : static_cast<GFloat16 *>(pDstData),
3317 : nDstPixelStride, nWordCount);
3318 : }
3319 313 : break;
3320 3473 : case GDT_CFloat32:
3321 3473 : if (bInComplex)
3322 : {
3323 2678 : GDALCopyWordsComplexT(pSrcData, nSrcPixelStride,
3324 : static_cast<float *>(pDstData),
3325 : nDstPixelStride, nWordCount);
3326 : }
3327 : else // input is not complex, so we need to promote to a complex
3328 : // buffer
3329 : {
3330 795 : GDALCopyWordsComplexOutT(pSrcData, nSrcPixelStride,
3331 : static_cast<float *>(pDstData),
3332 : nDstPixelStride, nWordCount);
3333 : }
3334 3473 : break;
3335 2291 : case GDT_CFloat64:
3336 2291 : if (bInComplex)
3337 : {
3338 1358 : GDALCopyWordsComplexT(pSrcData, nSrcPixelStride,
3339 : static_cast<double *>(pDstData),
3340 : nDstPixelStride, nWordCount);
3341 : }
3342 : else // input is not complex, so we need to promote to a complex
3343 : // buffer
3344 : {
3345 933 : GDALCopyWordsComplexOutT(pSrcData, nSrcPixelStride,
3346 : static_cast<double *>(pDstData),
3347 : nDstPixelStride, nWordCount);
3348 : }
3349 2291 : break;
3350 0 : case GDT_Unknown:
3351 : case GDT_TypeCount:
3352 0 : CPLAssert(false);
3353 : }
3354 54151189 : }
3355 :
3356 : } // end anonymous namespace
3357 :
3358 : /************************************************************************/
3359 : /* GDALReplicateWord() */
3360 : /************************************************************************/
3361 :
3362 : template <class T>
3363 588569 : inline void GDALReplicateWordT(void *pDstData, int nDstPixelStride,
3364 : GPtrDiff_t nWordCount)
3365 : {
3366 588569 : const T valSet = *static_cast<const T *>(pDstData);
3367 588569 : if (nDstPixelStride == static_cast<int>(sizeof(T)))
3368 : {
3369 558942 : T *pDstPtr = static_cast<T *>(pDstData) + 1;
3370 21256073 : while (nWordCount >= 4)
3371 : {
3372 20697148 : nWordCount -= 4;
3373 20697148 : pDstPtr[0] = valSet;
3374 20697148 : pDstPtr[1] = valSet;
3375 20697148 : pDstPtr[2] = valSet;
3376 20697148 : pDstPtr[3] = valSet;
3377 20697148 : pDstPtr += 4;
3378 : }
3379 1460040 : while (nWordCount > 0)
3380 : {
3381 901098 : --nWordCount;
3382 901098 : *pDstPtr = valSet;
3383 901098 : pDstPtr++;
3384 : }
3385 : }
3386 : else
3387 : {
3388 29751 : GByte *pabyDstPtr = static_cast<GByte *>(pDstData) + nDstPixelStride;
3389 1040338 : while (nWordCount > 0)
3390 : {
3391 1010587 : --nWordCount;
3392 1010587 : *reinterpret_cast<T *>(pabyDstPtr) = valSet;
3393 1010587 : pabyDstPtr += nDstPixelStride;
3394 : }
3395 : }
3396 588569 : }
3397 :
3398 1046560 : static void GDALReplicateWord(const void *CPL_RESTRICT pSrcData,
3399 : GDALDataType eSrcType,
3400 : void *CPL_RESTRICT pDstData,
3401 : GDALDataType eDstType, int nDstPixelStride,
3402 : GPtrDiff_t nWordCount)
3403 : {
3404 : /* -----------------------------------------------------------------------
3405 : */
3406 : /* Special case when the source data is always the same value */
3407 : /* (for VRTSourcedRasterBand::IRasterIO and
3408 : * VRTDerivedRasterBand::IRasterIO*/
3409 : /* for example) */
3410 : /* -----------------------------------------------------------------------
3411 : */
3412 : // Let the general translation case do the necessary conversions
3413 : // on the first destination element.
3414 1046560 : GDALCopyWords64(pSrcData, eSrcType, 0, pDstData, eDstType, 0, 1);
3415 :
3416 : // Now copy the first element to the nWordCount - 1 following destination
3417 : // elements.
3418 1040420 : nWordCount--;
3419 1040420 : GByte *pabyDstWord = reinterpret_cast<GByte *>(pDstData) + nDstPixelStride;
3420 :
3421 1040420 : switch (eDstType)
3422 : {
3423 451546 : case GDT_Byte:
3424 : case GDT_Int8:
3425 : {
3426 451546 : if (nDstPixelStride == 1)
3427 : {
3428 380029 : if (nWordCount > 0)
3429 380029 : memset(pabyDstWord,
3430 380029 : *reinterpret_cast<const GByte *>(pDstData),
3431 : nWordCount);
3432 : }
3433 : else
3434 : {
3435 71517 : GByte valSet = *reinterpret_cast<const GByte *>(pDstData);
3436 50338700 : while (nWordCount > 0)
3437 : {
3438 50267200 : --nWordCount;
3439 50267200 : *pabyDstWord = valSet;
3440 50267200 : pabyDstWord += nDstPixelStride;
3441 : }
3442 : }
3443 451546 : break;
3444 : }
3445 :
3446 : #define CASE_DUPLICATE_SIMPLE(enum_type, c_type) \
3447 : case enum_type: \
3448 : { \
3449 : GDALReplicateWordT<c_type>(pDstData, nDstPixelStride, nWordCount); \
3450 : break; \
3451 : }
3452 :
3453 34505 : CASE_DUPLICATE_SIMPLE(GDT_UInt16, GUInt16)
3454 202447 : CASE_DUPLICATE_SIMPLE(GDT_Int16, GInt16)
3455 56 : CASE_DUPLICATE_SIMPLE(GDT_UInt32, GUInt32)
3456 292878 : CASE_DUPLICATE_SIMPLE(GDT_Int32, GInt32)
3457 23 : CASE_DUPLICATE_SIMPLE(GDT_UInt64, std::uint64_t)
3458 1066 : CASE_DUPLICATE_SIMPLE(GDT_Int64, std::int64_t)
3459 0 : CASE_DUPLICATE_SIMPLE(GDT_Float16, GFloat16)
3460 52662 : CASE_DUPLICATE_SIMPLE(GDT_Float32, float)
3461 5224 : CASE_DUPLICATE_SIMPLE(GDT_Float64, double)
3462 :
3463 : #define CASE_DUPLICATE_COMPLEX(enum_type, c_type) \
3464 : case enum_type: \
3465 : { \
3466 : c_type valSet1 = reinterpret_cast<const c_type *>(pDstData)[0]; \
3467 : c_type valSet2 = reinterpret_cast<const c_type *>(pDstData)[1]; \
3468 : while (nWordCount > 0) \
3469 : { \
3470 : --nWordCount; \
3471 : reinterpret_cast<c_type *>(pabyDstWord)[0] = valSet1; \
3472 : reinterpret_cast<c_type *>(pabyDstWord)[1] = valSet2; \
3473 : pabyDstWord += nDstPixelStride; \
3474 : } \
3475 : break; \
3476 : }
3477 :
3478 784 : CASE_DUPLICATE_COMPLEX(GDT_CInt16, GInt16)
3479 784 : CASE_DUPLICATE_COMPLEX(GDT_CInt32, GInt32)
3480 6 : CASE_DUPLICATE_COMPLEX(GDT_CFloat16, GFloat16)
3481 790 : CASE_DUPLICATE_COMPLEX(GDT_CFloat32, float)
3482 790 : CASE_DUPLICATE_COMPLEX(GDT_CFloat64, double)
3483 :
3484 0 : case GDT_Unknown:
3485 : case GDT_TypeCount:
3486 0 : CPLAssert(false);
3487 : }
3488 1047770 : }
3489 :
3490 : /************************************************************************/
3491 : /* GDALUnrolledCopy() */
3492 : /************************************************************************/
3493 :
3494 : template <class T, int srcStride, int dstStride>
3495 3019101 : static inline void GDALUnrolledCopyGeneric(T *CPL_RESTRICT pDest,
3496 : const T *CPL_RESTRICT pSrc,
3497 : GPtrDiff_t nIters)
3498 : {
3499 3019101 : if (nIters >= 16)
3500 : {
3501 132918503 : for (GPtrDiff_t i = nIters / 16; i != 0; i--)
3502 : {
3503 130026053 : pDest[0 * dstStride] = pSrc[0 * srcStride];
3504 130026053 : pDest[1 * dstStride] = pSrc[1 * srcStride];
3505 130026053 : pDest[2 * dstStride] = pSrc[2 * srcStride];
3506 130026053 : pDest[3 * dstStride] = pSrc[3 * srcStride];
3507 130026053 : pDest[4 * dstStride] = pSrc[4 * srcStride];
3508 130026053 : pDest[5 * dstStride] = pSrc[5 * srcStride];
3509 130026053 : pDest[6 * dstStride] = pSrc[6 * srcStride];
3510 130026053 : pDest[7 * dstStride] = pSrc[7 * srcStride];
3511 130026053 : pDest[8 * dstStride] = pSrc[8 * srcStride];
3512 130026053 : pDest[9 * dstStride] = pSrc[9 * srcStride];
3513 130026053 : pDest[10 * dstStride] = pSrc[10 * srcStride];
3514 130026053 : pDest[11 * dstStride] = pSrc[11 * srcStride];
3515 130026053 : pDest[12 * dstStride] = pSrc[12 * srcStride];
3516 130026053 : pDest[13 * dstStride] = pSrc[13 * srcStride];
3517 130026053 : pDest[14 * dstStride] = pSrc[14 * srcStride];
3518 130026053 : pDest[15 * dstStride] = pSrc[15 * srcStride];
3519 130026053 : pDest += 16 * dstStride;
3520 130026053 : pSrc += 16 * srcStride;
3521 : }
3522 2892446 : nIters = nIters % 16;
3523 : }
3524 5173893 : for (GPtrDiff_t i = 0; i < nIters; i++)
3525 : {
3526 2154803 : pDest[i * dstStride] = *pSrc;
3527 2154803 : pSrc += srcStride;
3528 : }
3529 3019101 : }
3530 :
3531 : template <class T, int srcStride, int dstStride>
3532 3012991 : static inline void GDALUnrolledCopy(T *CPL_RESTRICT pDest,
3533 : const T *CPL_RESTRICT pSrc,
3534 : GPtrDiff_t nIters)
3535 : {
3536 3012991 : GDALUnrolledCopyGeneric<T, srcStride, dstStride>(pDest, pSrc, nIters);
3537 3013013 : }
3538 :
3539 : #ifdef HAVE_SSE2
3540 :
3541 : template <>
3542 353436 : void GDALUnrolledCopy<GByte, 2, 1>(GByte *CPL_RESTRICT pDest,
3543 : const GByte *CPL_RESTRICT pSrc,
3544 : GPtrDiff_t nIters)
3545 : {
3546 353436 : decltype(nIters) i = 0;
3547 353436 : if (nIters > 16)
3548 : {
3549 195179 : const __m128i xmm_mask = _mm_set1_epi16(0xff);
3550 : // If we were sure that there would always be 1 trailing byte, we could
3551 : // check against nIters - 15
3552 2996300 : for (; i < nIters - 16; i += 16)
3553 : {
3554 : __m128i xmm0 =
3555 2801120 : _mm_loadu_si128(reinterpret_cast<__m128i const *>(pSrc + 0));
3556 : __m128i xmm1 =
3557 5602250 : _mm_loadu_si128(reinterpret_cast<__m128i const *>(pSrc + 16));
3558 : // Set higher 8bit of each int16 packed word to 0
3559 2801120 : xmm0 = _mm_and_si128(xmm0, xmm_mask);
3560 2801120 : xmm1 = _mm_and_si128(xmm1, xmm_mask);
3561 : // Pack int16 to uint8 and merge back both vector
3562 2801120 : xmm0 = _mm_packus_epi16(xmm0, xmm1);
3563 :
3564 : // Store result
3565 2801120 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDest + i), xmm0);
3566 :
3567 2801120 : pSrc += 2 * 16;
3568 : }
3569 : }
3570 4628680 : for (; i < nIters; i++)
3571 : {
3572 4275240 : pDest[i] = *pSrc;
3573 4275240 : pSrc += 2;
3574 : }
3575 353436 : }
3576 :
3577 : #ifdef HAVE_SSSE3_AT_COMPILE_TIME
3578 :
3579 : template <>
3580 192064 : void GDALUnrolledCopy<GByte, 3, 1>(GByte *CPL_RESTRICT pDest,
3581 : const GByte *CPL_RESTRICT pSrc,
3582 : GPtrDiff_t nIters)
3583 : {
3584 192064 : if (nIters > 16 && CPLHaveRuntimeSSSE3())
3585 : {
3586 185964 : GDALUnrolledCopy_GByte_3_1_SSSE3(pDest, pSrc, nIters);
3587 : }
3588 : else
3589 : {
3590 6100 : GDALUnrolledCopyGeneric<GByte, 3, 1>(pDest, pSrc, nIters);
3591 : }
3592 192064 : }
3593 :
3594 : #endif
3595 :
3596 : template <>
3597 106635 : void GDALUnrolledCopy<GByte, 4, 1>(GByte *CPL_RESTRICT pDest,
3598 : const GByte *CPL_RESTRICT pSrc,
3599 : GPtrDiff_t nIters)
3600 : {
3601 106635 : decltype(nIters) i = 0;
3602 106635 : if (nIters > 16)
3603 : {
3604 101342 : const __m128i xmm_mask = _mm_set1_epi32(0xff);
3605 : // If we were sure that there would always be 3 trailing bytes, we could
3606 : // check against nIters - 15
3607 11322100 : for (; i < nIters - 16; i += 16)
3608 : {
3609 : __m128i xmm0 =
3610 11219400 : _mm_loadu_si128(reinterpret_cast<__m128i const *>(pSrc + 0));
3611 : __m128i xmm1 =
3612 11219400 : _mm_loadu_si128(reinterpret_cast<__m128i const *>(pSrc + 16));
3613 : __m128i xmm2 =
3614 11219400 : _mm_loadu_si128(reinterpret_cast<__m128i const *>(pSrc + 32));
3615 : __m128i xmm3 =
3616 22438800 : _mm_loadu_si128(reinterpret_cast<__m128i const *>(pSrc + 48));
3617 : // Set higher 24bit of each int32 packed word to 0
3618 11219400 : xmm0 = _mm_and_si128(xmm0, xmm_mask);
3619 11219400 : xmm1 = _mm_and_si128(xmm1, xmm_mask);
3620 11219400 : xmm2 = _mm_and_si128(xmm2, xmm_mask);
3621 11219400 : xmm3 = _mm_and_si128(xmm3, xmm_mask);
3622 : // Pack int32 to int16
3623 11219600 : xmm0 = _mm_packs_epi32(xmm0, xmm1);
3624 11219600 : xmm2 = _mm_packs_epi32(xmm2, xmm3);
3625 : // Pack int16 to uint8
3626 11220800 : xmm0 = _mm_packus_epi16(xmm0, xmm2);
3627 :
3628 : // Store result
3629 11220800 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDest + i), xmm0);
3630 :
3631 11220800 : pSrc += 4 * 16;
3632 : }
3633 : }
3634 1143410 : for (; i < nIters; i++)
3635 : {
3636 1035440 : pDest[i] = *pSrc;
3637 1035440 : pSrc += 4;
3638 : }
3639 107966 : }
3640 : #endif // HAVE_SSE2
3641 :
3642 : /************************************************************************/
3643 : /* GDALFastCopy() */
3644 : /************************************************************************/
3645 :
3646 : template <class T>
3647 39713800 : static inline void GDALFastCopy(T *CPL_RESTRICT pDest, int nDestStride,
3648 : const T *CPL_RESTRICT pSrc, int nSrcStride,
3649 : GPtrDiff_t nIters)
3650 : {
3651 39713800 : constexpr int sizeofT = static_cast<int>(sizeof(T));
3652 39713800 : if (nIters == 1)
3653 : {
3654 22295020 : *pDest = *pSrc;
3655 : }
3656 17418739 : else if (nDestStride == sizeofT)
3657 : {
3658 14334110 : if (nSrcStride == sizeofT)
3659 : {
3660 13477894 : memcpy(pDest, pSrc, nIters * sizeof(T));
3661 : }
3662 856236 : else if (nSrcStride == 2 * sizeofT)
3663 : {
3664 356651 : GDALUnrolledCopy<T, 2, 1>(pDest, pSrc, nIters);
3665 : }
3666 499585 : else if (nSrcStride == 3 * sizeofT)
3667 : {
3668 288642 : GDALUnrolledCopy<T, 3, 1>(pDest, pSrc, nIters);
3669 : }
3670 210943 : else if (nSrcStride == 4 * sizeofT)
3671 : {
3672 110617 : GDALUnrolledCopy<T, 4, 1>(pDest, pSrc, nIters);
3673 : }
3674 : else
3675 : {
3676 17216590 : while (nIters-- > 0)
3677 : {
3678 17116250 : *pDest = *pSrc;
3679 17116250 : pSrc += nSrcStride / sizeofT;
3680 17116250 : pDest++;
3681 : }
3682 : }
3683 : }
3684 3084669 : else if (nSrcStride == sizeofT)
3685 : {
3686 3073032 : if (nDestStride == 2 * sizeofT)
3687 : {
3688 150067 : GDALUnrolledCopy<T, 1, 2>(pDest, pSrc, nIters);
3689 : }
3690 2922961 : else if (nDestStride == 3 * sizeofT)
3691 : {
3692 2096127 : GDALUnrolledCopy<T, 1, 3>(pDest, pSrc, nIters);
3693 : }
3694 826833 : else if (nDestStride == 4 * sizeofT)
3695 : {
3696 663021 : GDALUnrolledCopy<T, 1, 4>(pDest, pSrc, nIters);
3697 : }
3698 : else
3699 : {
3700 17119160 : while (nIters-- > 0)
3701 : {
3702 16955410 : *pDest = *pSrc;
3703 16955410 : pSrc++;
3704 16955410 : pDest += nDestStride / sizeofT;
3705 : }
3706 : }
3707 : }
3708 : else
3709 : {
3710 1218739 : while (nIters-- > 0)
3711 : {
3712 1207102 : *pDest = *pSrc;
3713 1207102 : pSrc += nSrcStride / sizeofT;
3714 1207102 : pDest += nDestStride / sizeofT;
3715 : }
3716 : }
3717 39713900 : }
3718 :
3719 : /************************************************************************/
3720 : /* GDALFastCopyByte() */
3721 : /************************************************************************/
3722 :
3723 326250 : static void GDALFastCopyByte(const GByte *CPL_RESTRICT pSrcData,
3724 : int nSrcPixelStride, GByte *CPL_RESTRICT pDstData,
3725 : int nDstPixelStride, GPtrDiff_t nWordCount)
3726 : {
3727 326250 : GDALFastCopy(pDstData, nDstPixelStride, pSrcData, nSrcPixelStride,
3728 : nWordCount);
3729 326250 : }
3730 :
3731 : /************************************************************************/
3732 : /* GDALCopyWords() */
3733 : /************************************************************************/
3734 :
3735 : /**
3736 : * Copy pixel words from buffer to buffer.
3737 : *
3738 : * @see GDALCopyWords64()
3739 : */
3740 78070700 : void CPL_STDCALL GDALCopyWords(const void *CPL_RESTRICT pSrcData,
3741 : GDALDataType eSrcType, int nSrcPixelStride,
3742 : void *CPL_RESTRICT pDstData,
3743 : GDALDataType eDstType, int nDstPixelStride,
3744 : int nWordCount)
3745 : {
3746 78070700 : GDALCopyWords64(pSrcData, eSrcType, nSrcPixelStride, pDstData, eDstType,
3747 : nDstPixelStride, nWordCount);
3748 78070700 : }
3749 :
3750 : /************************************************************************/
3751 : /* GDALCopyWords64() */
3752 : /************************************************************************/
3753 :
3754 : /**
3755 : * Copy pixel words from buffer to buffer.
3756 : *
3757 : * This function is used to copy pixel word values from one memory buffer
3758 : * to another, with support for conversion between data types, and differing
3759 : * step factors. The data type conversion is done using the following
3760 : * rules:
3761 : * <ul>
3762 : * <li>Values assigned to a lower range integer type are clipped. For
3763 : * instance assigning GDT_Int16 values to a GDT_Byte buffer will cause values
3764 : * less the 0 to be set to 0, and values larger than 255 to be set to 255.
3765 : * </li>
3766 : * <li>
3767 : * Assignment from floating point to integer rounds to closest integer.
3768 : * +Infinity is mapped to the largest integer. -Infinity is mapped to the
3769 : * smallest integer. NaN is mapped to 0.
3770 : * </li>
3771 : * <li>
3772 : * Assignment from non-complex to complex will result in the imaginary part
3773 : * being set to zero on output.
3774 : * </li>
3775 : * <li> Assignment from complex to
3776 : * non-complex will result in the complex portion being lost and the real
3777 : * component being preserved (<i>not magnitude!</i>).
3778 : * </li>
3779 : * </ul>
3780 : *
3781 : * No assumptions are made about the source or destination words occurring
3782 : * on word boundaries. It is assumed that all values are in native machine
3783 : * byte order.
3784 : *
3785 : * @param pSrcData Pointer to source data to be converted.
3786 : * @param eSrcType the source data type (see GDALDataType enum)
3787 : * @param nSrcPixelStride Source pixel stride (i.e. distance between 2 words),
3788 : * in bytes
3789 : * @param pDstData Pointer to buffer where destination data should go
3790 : * @param eDstType the destination data type (see GDALDataType enum)
3791 : * @param nDstPixelStride Destination pixel stride (i.e. distance between 2
3792 : * words), in bytes
3793 : * @param nWordCount number of words to be copied
3794 : *
3795 : * @note
3796 : * When adding a new data type to GDAL, you must do the following to
3797 : * support it properly within the GDALCopyWords function:
3798 : * 1. Add the data type to the switch on eSrcType in GDALCopyWords.
3799 : * This should invoke the appropriate GDALCopyWordsFromT wrapper.
3800 : * 2. Add the data type to the switch on eDstType in GDALCopyWordsFromT.
3801 : * This should call the appropriate GDALCopyWordsT template.
3802 : * 3. If appropriate, overload the appropriate CopyWord template in the
3803 : * above namespace. This will ensure that any conversion issues are
3804 : * handled (cases like the float -> int32 case, where the min/max)
3805 : * values are subject to roundoff error.
3806 : */
3807 :
3808 108685000 : void CPL_STDCALL GDALCopyWords64(const void *CPL_RESTRICT pSrcData,
3809 : GDALDataType eSrcType, int nSrcPixelStride,
3810 : void *CPL_RESTRICT pDstData,
3811 : GDALDataType eDstType, int nDstPixelStride,
3812 : GPtrDiff_t nWordCount)
3813 :
3814 : {
3815 : // On platforms where alignment matters, be careful
3816 108685000 : const int nSrcDataTypeSize = GDALGetDataTypeSizeBytes(eSrcType);
3817 108683000 : const int nDstDataTypeSize = GDALGetDataTypeSizeBytes(eDstType);
3818 108684000 : if (CPL_UNLIKELY(nSrcDataTypeSize == 0 || nDstDataTypeSize == 0))
3819 : {
3820 2 : CPLError(CE_Failure, CPLE_NotSupported,
3821 : "GDALCopyWords64(): unsupported GDT_Unknown/GDT_TypeCount "
3822 : "argument");
3823 2 : return;
3824 : }
3825 108684000 : if (!(eSrcType == eDstType && nSrcPixelStride == nDstPixelStride) &&
3826 58948600 : ((reinterpret_cast<uintptr_t>(pSrcData) % nSrcDataTypeSize) != 0 ||
3827 58946100 : (reinterpret_cast<uintptr_t>(pDstData) % nDstDataTypeSize) != 0 ||
3828 58945900 : (nSrcPixelStride % nSrcDataTypeSize) != 0 ||
3829 58945700 : (nDstPixelStride % nDstDataTypeSize) != 0))
3830 : {
3831 905 : if (eSrcType == eDstType)
3832 : {
3833 34800 : for (decltype(nWordCount) i = 0; i < nWordCount; i++)
3834 : {
3835 34000 : memcpy(static_cast<GByte *>(pDstData) + nDstPixelStride * i,
3836 : static_cast<const GByte *>(pSrcData) +
3837 34000 : nSrcPixelStride * i,
3838 : nDstDataTypeSize);
3839 : }
3840 : }
3841 : else
3842 : {
3843 210 : const auto getAlignedPtr = [](GByte *ptr, int align)
3844 : {
3845 : return ptr +
3846 210 : ((align - (reinterpret_cast<uintptr_t>(ptr) % align)) %
3847 210 : align);
3848 : };
3849 :
3850 : // The largest we need is for CFloat64 (16 bytes), so 32 bytes to
3851 : // be sure to get correctly aligned pointer.
3852 105 : constexpr size_t SIZEOF_CFLOAT64 = 2 * sizeof(double);
3853 : GByte abySrcBuffer[2 * SIZEOF_CFLOAT64];
3854 : GByte abyDstBuffer[2 * SIZEOF_CFLOAT64];
3855 : GByte *pabySrcBuffer =
3856 105 : getAlignedPtr(abySrcBuffer, nSrcDataTypeSize);
3857 : GByte *pabyDstBuffer =
3858 105 : getAlignedPtr(abyDstBuffer, nDstDataTypeSize);
3859 3360 : for (decltype(nWordCount) i = 0; i < nWordCount; i++)
3860 : {
3861 3255 : memcpy(pabySrcBuffer,
3862 : static_cast<const GByte *>(pSrcData) +
3863 3255 : nSrcPixelStride * i,
3864 : nSrcDataTypeSize);
3865 3255 : GDALCopyWords64(pabySrcBuffer, eSrcType, 0, pabyDstBuffer,
3866 : eDstType, 0, 1);
3867 3255 : memcpy(static_cast<GByte *>(pDstData) + nDstPixelStride * i,
3868 : pabyDstBuffer, nDstDataTypeSize);
3869 : }
3870 : }
3871 905 : return;
3872 : }
3873 :
3874 : // Deal with the case where we're replicating a single word into the
3875 : // provided buffer
3876 108683000 : if (nSrcPixelStride == 0 && nWordCount > 1)
3877 : {
3878 1047130 : GDALReplicateWord(pSrcData, eSrcType, pDstData, eDstType,
3879 : nDstPixelStride, nWordCount);
3880 1047880 : return;
3881 : }
3882 :
3883 107636000 : if (eSrcType == eDstType)
3884 : {
3885 53608400 : if (eSrcType == GDT_Byte || eSrcType == GDT_Int8)
3886 : {
3887 17939200 : GDALFastCopy(static_cast<GByte *>(pDstData), nDstPixelStride,
3888 : static_cast<const GByte *>(pSrcData), nSrcPixelStride,
3889 : nWordCount);
3890 17939400 : return;
3891 : }
3892 :
3893 35669200 : if (nSrcDataTypeSize == 2 && (nSrcPixelStride % 2) == 0 &&
3894 21450000 : (nDstPixelStride % 2) == 0)
3895 : {
3896 21450000 : GDALFastCopy(static_cast<short *>(pDstData), nDstPixelStride,
3897 : static_cast<const short *>(pSrcData), nSrcPixelStride,
3898 : nWordCount);
3899 21449800 : return;
3900 : }
3901 :
3902 14219200 : if (nWordCount == 1)
3903 : {
3904 : #if defined(CSA_BUILD) || defined(__COVERITY__)
3905 : // Avoid false positives...
3906 : memcpy(pDstData, pSrcData, nSrcDataTypeSize);
3907 : #else
3908 13899000 : if (nSrcDataTypeSize == 2)
3909 0 : memcpy(pDstData, pSrcData, 2);
3910 13899000 : else if (nSrcDataTypeSize == 4)
3911 13811800 : memcpy(pDstData, pSrcData, 4);
3912 87185 : else if (nSrcDataTypeSize == 8)
3913 70580 : memcpy(pDstData, pSrcData, 8);
3914 : else /* if( eSrcType == GDT_CFloat64 ) */
3915 16605 : memcpy(pDstData, pSrcData, 16);
3916 : #endif
3917 13899000 : return;
3918 : }
3919 :
3920 : // Let memcpy() handle the case where we're copying a packed buffer
3921 : // of pixels.
3922 320226 : if (nSrcPixelStride == nDstPixelStride)
3923 : {
3924 192202 : if (nSrcPixelStride == nSrcDataTypeSize)
3925 : {
3926 192134 : memcpy(pDstData, pSrcData, nWordCount * nSrcDataTypeSize);
3927 192134 : return;
3928 : }
3929 : }
3930 : }
3931 :
3932 : // Handle the more general case -- deals with conversion of data types
3933 : // directly.
3934 54155500 : switch (eSrcType)
3935 : {
3936 15508100 : case GDT_Byte:
3937 15508100 : GDALCopyWordsFromT<unsigned char>(
3938 : static_cast<const unsigned char *>(pSrcData), nSrcPixelStride,
3939 : false, pDstData, eDstType, nDstPixelStride, nWordCount);
3940 15503800 : break;
3941 1248 : case GDT_Int8:
3942 1248 : GDALCopyWordsFromT<signed char>(
3943 : static_cast<const signed char *>(pSrcData), nSrcPixelStride,
3944 : false, pDstData, eDstType, nDstPixelStride, nWordCount);
3945 1248 : break;
3946 54265 : case GDT_UInt16:
3947 54265 : GDALCopyWordsFromT<unsigned short>(
3948 : static_cast<const unsigned short *>(pSrcData), nSrcPixelStride,
3949 : false, pDstData, eDstType, nDstPixelStride, nWordCount);
3950 54265 : break;
3951 4353700 : case GDT_Int16:
3952 4353700 : GDALCopyWordsFromT<short>(static_cast<const short *>(pSrcData),
3953 : nSrcPixelStride, false, pDstData,
3954 : eDstType, nDstPixelStride, nWordCount);
3955 4353700 : break;
3956 7107 : case GDT_UInt32:
3957 7107 : GDALCopyWordsFromT<unsigned int>(
3958 : static_cast<const unsigned int *>(pSrcData), nSrcPixelStride,
3959 : false, pDstData, eDstType, nDstPixelStride, nWordCount);
3960 7107 : break;
3961 12255100 : case GDT_Int32:
3962 12255100 : GDALCopyWordsFromT<int>(static_cast<const int *>(pSrcData),
3963 : nSrcPixelStride, false, pDstData, eDstType,
3964 : nDstPixelStride, nWordCount);
3965 12255100 : break;
3966 1641 : case GDT_UInt64:
3967 1641 : GDALCopyWordsFromT<std::uint64_t>(
3968 : static_cast<const std::uint64_t *>(pSrcData), nSrcPixelStride,
3969 : false, pDstData, eDstType, nDstPixelStride, nWordCount);
3970 1641 : break;
3971 11270 : case GDT_Int64:
3972 11270 : GDALCopyWordsFromT<std::int64_t>(
3973 : static_cast<const std::int64_t *>(pSrcData), nSrcPixelStride,
3974 : false, pDstData, eDstType, nDstPixelStride, nWordCount);
3975 11270 : break;
3976 1370 : case GDT_Float16:
3977 1370 : GDALCopyWordsFromT<GFloat16>(
3978 : static_cast<const GFloat16 *>(pSrcData), nSrcPixelStride, false,
3979 : pDstData, eDstType, nDstPixelStride, nWordCount);
3980 1370 : break;
3981 504812 : case GDT_Float32:
3982 504812 : GDALCopyWordsFromT<float>(static_cast<const float *>(pSrcData),
3983 : nSrcPixelStride, false, pDstData,
3984 : eDstType, nDstPixelStride, nWordCount);
3985 504811 : break;
3986 20698300 : case GDT_Float64:
3987 20698300 : GDALCopyWordsFromT<double>(static_cast<const double *>(pSrcData),
3988 : nSrcPixelStride, false, pDstData,
3989 : eDstType, nDstPixelStride, nWordCount);
3990 20698300 : break;
3991 478141 : case GDT_CInt16:
3992 478141 : GDALCopyWordsFromT<short>(static_cast<const short *>(pSrcData),
3993 : nSrcPixelStride, true, pDstData, eDstType,
3994 : nDstPixelStride, nWordCount);
3995 478141 : break;
3996 556 : case GDT_CInt32:
3997 556 : GDALCopyWordsFromT<int>(static_cast<const int *>(pSrcData),
3998 : nSrcPixelStride, true, pDstData, eDstType,
3999 : nDstPixelStride, nWordCount);
4000 556 : break;
4001 508 : case GDT_CFloat16:
4002 508 : GDALCopyWordsFromT<GFloat16>(
4003 : static_cast<const GFloat16 *>(pSrcData), nSrcPixelStride, true,
4004 : pDstData, eDstType, nDstPixelStride, nWordCount);
4005 508 : break;
4006 2077 : case GDT_CFloat32:
4007 2077 : GDALCopyWordsFromT<float>(static_cast<const float *>(pSrcData),
4008 : nSrcPixelStride, true, pDstData, eDstType,
4009 : nDstPixelStride, nWordCount);
4010 2077 : break;
4011 276974 : case GDT_CFloat64:
4012 276974 : GDALCopyWordsFromT<double>(static_cast<const double *>(pSrcData),
4013 : nSrcPixelStride, true, pDstData,
4014 : eDstType, nDstPixelStride, nWordCount);
4015 276974 : break;
4016 0 : case GDT_Unknown:
4017 : case GDT_TypeCount:
4018 0 : CPLAssert(false);
4019 : }
4020 : }
4021 :
4022 : /************************************************************************/
4023 : /* GDALCopyBits() */
4024 : /************************************************************************/
4025 :
4026 : /**
4027 : * Bitwise word copying.
4028 : *
4029 : * A function for moving sets of partial bytes around. Loosely
4030 : * speaking this is a bitwise analog to GDALCopyWords().
4031 : *
4032 : * It copies nStepCount "words" where each word is nBitCount bits long.
4033 : * The nSrcStep and nDstStep are the number of bits from the start of one
4034 : * word to the next (same as nBitCount if they are packed). The nSrcOffset
4035 : * and nDstOffset are the offset into the source and destination buffers
4036 : * to start at, also measured in bits.
4037 : *
4038 : * All bit offsets are assumed to start from the high order bit in a byte
4039 : * (i.e. most significant bit first). Currently this function is not very
4040 : * optimized, but it may be improved for some common cases in the future
4041 : * as needed.
4042 : *
4043 : * @param pabySrcData the source data buffer.
4044 : * @param nSrcOffset the offset (in bits) in pabySrcData to the start of the
4045 : * first word to copy.
4046 : * @param nSrcStep the offset in bits from the start one source word to the
4047 : * start of the next.
4048 : * @param pabyDstData the destination data buffer.
4049 : * @param nDstOffset the offset (in bits) in pabyDstData to the start of the
4050 : * first word to copy over.
4051 : * @param nDstStep the offset in bits from the start one word to the
4052 : * start of the next.
4053 : * @param nBitCount the number of bits in a word to be copied.
4054 : * @param nStepCount the number of words to copy.
4055 : */
4056 :
4057 0 : void GDALCopyBits(const GByte *pabySrcData, int nSrcOffset, int nSrcStep,
4058 : GByte *pabyDstData, int nDstOffset, int nDstStep,
4059 : int nBitCount, int nStepCount)
4060 :
4061 : {
4062 0 : VALIDATE_POINTER0(pabySrcData, "GDALCopyBits");
4063 :
4064 0 : for (int iStep = 0; iStep < nStepCount; iStep++)
4065 : {
4066 0 : for (int iBit = 0; iBit < nBitCount; iBit++)
4067 : {
4068 0 : if (pabySrcData[nSrcOffset >> 3] & (0x80 >> (nSrcOffset & 7)))
4069 0 : pabyDstData[nDstOffset >> 3] |= (0x80 >> (nDstOffset & 7));
4070 : else
4071 0 : pabyDstData[nDstOffset >> 3] &= ~(0x80 >> (nDstOffset & 7));
4072 :
4073 0 : nSrcOffset++;
4074 0 : nDstOffset++;
4075 : }
4076 :
4077 0 : nSrcOffset += (nSrcStep - nBitCount);
4078 0 : nDstOffset += (nDstStep - nBitCount);
4079 : }
4080 : }
4081 :
4082 : /************************************************************************/
4083 : /* GDALGetBestOverviewLevel() */
4084 : /* */
4085 : /* Returns the best overview level to satisfy the query or -1 if none */
4086 : /* Also updates nXOff, nYOff, nXSize, nYSize and psExtraArg when */
4087 : /* returning a valid overview level */
4088 : /************************************************************************/
4089 :
4090 0 : int GDALBandGetBestOverviewLevel(GDALRasterBand *poBand, int &nXOff, int &nYOff,
4091 : int &nXSize, int &nYSize, int nBufXSize,
4092 : int nBufYSize)
4093 : {
4094 0 : return GDALBandGetBestOverviewLevel2(poBand, nXOff, nYOff, nXSize, nYSize,
4095 0 : nBufXSize, nBufYSize, nullptr);
4096 : }
4097 :
4098 523977 : int GDALBandGetBestOverviewLevel2(GDALRasterBand *poBand, int &nXOff,
4099 : int &nYOff, int &nXSize, int &nYSize,
4100 : int nBufXSize, int nBufYSize,
4101 : GDALRasterIOExtraArg *psExtraArg)
4102 : {
4103 523977 : if (psExtraArg != nullptr && psExtraArg->nVersion > 1 &&
4104 523977 : psExtraArg->bUseOnlyThisScale)
4105 109 : return -1;
4106 : /* -------------------------------------------------------------------- */
4107 : /* Compute the desired downsampling factor. It is */
4108 : /* based on the least reduced axis, and represents the number */
4109 : /* of source pixels to one destination pixel. */
4110 : /* -------------------------------------------------------------------- */
4111 523868 : const double dfDesiredDownsamplingFactor =
4112 523868 : ((nXSize / static_cast<double>(nBufXSize)) <
4113 361530 : (nYSize / static_cast<double>(nBufYSize)) ||
4114 : nBufYSize == 1)
4115 752255 : ? nXSize / static_cast<double>(nBufXSize)
4116 133143 : : nYSize / static_cast<double>(nBufYSize);
4117 :
4118 : /* -------------------------------------------------------------------- */
4119 : /* Find the overview level that largest downsampling factor (most */
4120 : /* downsampled) that is still less than (or only a little more) */
4121 : /* downsampled than the request. */
4122 : /* -------------------------------------------------------------------- */
4123 523868 : const int nOverviewCount = poBand->GetOverviewCount();
4124 523868 : GDALRasterBand *poBestOverview = nullptr;
4125 523868 : double dfBestDownsamplingFactor = 0;
4126 523868 : int nBestOverviewLevel = -1;
4127 :
4128 : const char *pszOversampligThreshold =
4129 523868 : CPLGetConfigOption("GDAL_OVERVIEW_OVERSAMPLING_THRESHOLD", nullptr);
4130 :
4131 : // Note: keep this logic for overview selection in sync between
4132 : // gdalwarp_lib.cpp and rasterio.cpp
4133 : // Cf https://github.com/OSGeo/gdal/pull/9040#issuecomment-1898524693
4134 : const double dfOversamplingThreshold =
4135 1047730 : pszOversampligThreshold ? CPLAtof(pszOversampligThreshold)
4136 523859 : : psExtraArg && psExtraArg->eResampleAlg != GRIORA_NearestNeighbour
4137 1047720 : ? 1.0
4138 523868 : : 1.2;
4139 526564 : for (int iOverview = 0; iOverview < nOverviewCount; iOverview++)
4140 : {
4141 5612 : GDALRasterBand *poOverview = poBand->GetOverview(iOverview);
4142 11224 : if (poOverview == nullptr ||
4143 11223 : poOverview->GetXSize() > poBand->GetXSize() ||
4144 5611 : poOverview->GetYSize() > poBand->GetYSize())
4145 : {
4146 1 : continue;
4147 : }
4148 :
4149 : // Compute downsampling factor of this overview
4150 : const double dfDownsamplingFactor = std::min(
4151 5611 : poBand->GetXSize() / static_cast<double>(poOverview->GetXSize()),
4152 11222 : poBand->GetYSize() / static_cast<double>(poOverview->GetYSize()));
4153 :
4154 : // Is it nearly the requested factor and better (lower) than
4155 : // the current best factor?
4156 : // Use an epsilon because of numerical instability.
4157 5611 : constexpr double EPSILON = 1e-1;
4158 5719 : if (dfDownsamplingFactor >=
4159 5611 : dfDesiredDownsamplingFactor * dfOversamplingThreshold +
4160 5503 : EPSILON ||
4161 : dfDownsamplingFactor <= dfBestDownsamplingFactor)
4162 : {
4163 108 : continue;
4164 : }
4165 :
4166 : // Ignore AVERAGE_BIT2GRAYSCALE overviews for RasterIO purposes.
4167 5503 : const char *pszResampling = poOverview->GetMetadataItem("RESAMPLING");
4168 :
4169 5503 : if (pszResampling != nullptr &&
4170 71 : STARTS_WITH_CI(pszResampling, "AVERAGE_BIT2"))
4171 16 : continue;
4172 :
4173 : // OK, this is our new best overview.
4174 5487 : poBestOverview = poOverview;
4175 5487 : nBestOverviewLevel = iOverview;
4176 5487 : dfBestDownsamplingFactor = dfDownsamplingFactor;
4177 :
4178 5487 : if (std::abs(dfDesiredDownsamplingFactor - dfDownsamplingFactor) <
4179 : EPSILON)
4180 : {
4181 2916 : break;
4182 : }
4183 : }
4184 :
4185 : /* -------------------------------------------------------------------- */
4186 : /* If we didn't find an overview that helps us, just return */
4187 : /* indicating failure and the full resolution image will be used. */
4188 : /* -------------------------------------------------------------------- */
4189 523868 : if (nBestOverviewLevel < 0)
4190 520879 : return -1;
4191 :
4192 : /* -------------------------------------------------------------------- */
4193 : /* Recompute the source window in terms of the selected */
4194 : /* overview. */
4195 : /* -------------------------------------------------------------------- */
4196 : const double dfXFactor =
4197 2989 : poBand->GetXSize() / static_cast<double>(poBestOverview->GetXSize());
4198 : const double dfYFactor =
4199 2989 : poBand->GetYSize() / static_cast<double>(poBestOverview->GetYSize());
4200 2989 : CPLDebug("GDAL", "Selecting overview %d x %d", poBestOverview->GetXSize(),
4201 : poBestOverview->GetYSize());
4202 :
4203 8967 : const int nOXOff = std::min(poBestOverview->GetXSize() - 1,
4204 2989 : static_cast<int>(nXOff / dfXFactor + 0.5));
4205 8967 : const int nOYOff = std::min(poBestOverview->GetYSize() - 1,
4206 2989 : static_cast<int>(nYOff / dfYFactor + 0.5));
4207 2989 : int nOXSize = std::max(1, static_cast<int>(nXSize / dfXFactor + 0.5));
4208 2989 : int nOYSize = std::max(1, static_cast<int>(nYSize / dfYFactor + 0.5));
4209 2989 : if (nOXOff + nOXSize > poBestOverview->GetXSize())
4210 0 : nOXSize = poBestOverview->GetXSize() - nOXOff;
4211 2989 : if (nOYOff + nOYSize > poBestOverview->GetYSize())
4212 2 : nOYSize = poBestOverview->GetYSize() - nOYOff;
4213 :
4214 2989 : if (psExtraArg)
4215 : {
4216 2989 : if (psExtraArg->bFloatingPointWindowValidity)
4217 : {
4218 115 : psExtraArg->dfXOff /= dfXFactor;
4219 115 : psExtraArg->dfXSize /= dfXFactor;
4220 115 : psExtraArg->dfYOff /= dfYFactor;
4221 115 : psExtraArg->dfYSize /= dfYFactor;
4222 : }
4223 2874 : else if (psExtraArg->eResampleAlg != GRIORA_NearestNeighbour)
4224 : {
4225 16 : psExtraArg->bFloatingPointWindowValidity = true;
4226 16 : psExtraArg->dfXOff = nXOff / dfXFactor;
4227 16 : psExtraArg->dfXSize = nXSize / dfXFactor;
4228 16 : psExtraArg->dfYOff = nYOff / dfYFactor;
4229 16 : psExtraArg->dfYSize = nYSize / dfYFactor;
4230 : }
4231 : }
4232 :
4233 2989 : nXOff = nOXOff;
4234 2989 : nYOff = nOYOff;
4235 2989 : nXSize = nOXSize;
4236 2989 : nYSize = nOYSize;
4237 :
4238 2989 : return nBestOverviewLevel;
4239 : }
4240 :
4241 : /************************************************************************/
4242 : /* OverviewRasterIO() */
4243 : /* */
4244 : /* Special work function to utilize available overviews to */
4245 : /* more efficiently satisfy downsampled requests. It will */
4246 : /* return CE_Failure if there are no appropriate overviews */
4247 : /* available but it doesn't emit any error messages. */
4248 : /************************************************************************/
4249 :
4250 : //! @cond Doxygen_Suppress
4251 2 : CPLErr GDALRasterBand::OverviewRasterIO(
4252 : GDALRWFlag eRWFlag, int nXOff, int nYOff, int nXSize, int nYSize,
4253 : void *pData, int nBufXSize, int nBufYSize, GDALDataType eBufType,
4254 : GSpacing nPixelSpace, GSpacing nLineSpace, GDALRasterIOExtraArg *psExtraArg)
4255 :
4256 : {
4257 : GDALRasterIOExtraArg sExtraArg;
4258 2 : GDALCopyRasterIOExtraArg(&sExtraArg, psExtraArg);
4259 :
4260 2 : const int nOverview = GDALBandGetBestOverviewLevel2(
4261 : this, nXOff, nYOff, nXSize, nYSize, nBufXSize, nBufYSize, &sExtraArg);
4262 2 : if (nOverview < 0)
4263 1 : return CE_Failure;
4264 :
4265 : /* -------------------------------------------------------------------- */
4266 : /* Recast the call in terms of the new raster layer. */
4267 : /* -------------------------------------------------------------------- */
4268 1 : GDALRasterBand *poOverviewBand = GetOverview(nOverview);
4269 1 : if (poOverviewBand == nullptr)
4270 0 : return CE_Failure;
4271 :
4272 1 : return poOverviewBand->RasterIO(eRWFlag, nXOff, nYOff, nXSize, nYSize,
4273 : pData, nBufXSize, nBufYSize, eBufType,
4274 1 : nPixelSpace, nLineSpace, &sExtraArg);
4275 : }
4276 :
4277 : /************************************************************************/
4278 : /* TryOverviewRasterIO() */
4279 : /************************************************************************/
4280 :
4281 362417 : CPLErr GDALRasterBand::TryOverviewRasterIO(
4282 : GDALRWFlag eRWFlag, int nXOff, int nYOff, int nXSize, int nYSize,
4283 : void *pData, int nBufXSize, int nBufYSize, GDALDataType eBufType,
4284 : GSpacing nPixelSpace, GSpacing nLineSpace, GDALRasterIOExtraArg *psExtraArg,
4285 : int *pbTried)
4286 : {
4287 362417 : int nXOffMod = nXOff;
4288 362417 : int nYOffMod = nYOff;
4289 362417 : int nXSizeMod = nXSize;
4290 362417 : int nYSizeMod = nYSize;
4291 : GDALRasterIOExtraArg sExtraArg;
4292 :
4293 362417 : GDALCopyRasterIOExtraArg(&sExtraArg, psExtraArg);
4294 :
4295 362417 : int iOvrLevel = GDALBandGetBestOverviewLevel2(
4296 : this, nXOffMod, nYOffMod, nXSizeMod, nYSizeMod, nBufXSize, nBufYSize,
4297 : &sExtraArg);
4298 :
4299 362417 : if (iOvrLevel >= 0)
4300 : {
4301 50 : GDALRasterBand *poOverviewBand = GetOverview(iOvrLevel);
4302 50 : if (poOverviewBand)
4303 : {
4304 50 : *pbTried = TRUE;
4305 50 : return poOverviewBand->RasterIO(
4306 : eRWFlag, nXOffMod, nYOffMod, nXSizeMod, nYSizeMod, pData,
4307 : nBufXSize, nBufYSize, eBufType, nPixelSpace, nLineSpace,
4308 50 : &sExtraArg);
4309 : }
4310 : }
4311 :
4312 362367 : *pbTried = FALSE;
4313 362367 : return CE_None;
4314 : }
4315 :
4316 : /************************************************************************/
4317 : /* TryOverviewRasterIO() */
4318 : /************************************************************************/
4319 :
4320 158584 : CPLErr GDALDataset::TryOverviewRasterIO(
4321 : GDALRWFlag eRWFlag, int nXOff, int nYOff, int nXSize, int nYSize,
4322 : void *pData, int nBufXSize, int nBufYSize, GDALDataType eBufType,
4323 : int nBandCount, const int *panBandMap, GSpacing nPixelSpace,
4324 : GSpacing nLineSpace, GSpacing nBandSpace, GDALRasterIOExtraArg *psExtraArg,
4325 : int *pbTried)
4326 : {
4327 158584 : int nXOffMod = nXOff;
4328 158584 : int nYOffMod = nYOff;
4329 158584 : int nXSizeMod = nXSize;
4330 158584 : int nYSizeMod = nYSize;
4331 : GDALRasterIOExtraArg sExtraArg;
4332 158584 : GDALCopyRasterIOExtraArg(&sExtraArg, psExtraArg);
4333 :
4334 317168 : int iOvrLevel = GDALBandGetBestOverviewLevel2(
4335 158584 : papoBands[0], nXOffMod, nYOffMod, nXSizeMod, nYSizeMod, nBufXSize,
4336 : nBufYSize, &sExtraArg);
4337 :
4338 158625 : if (iOvrLevel >= 0 && papoBands[0]->GetOverview(iOvrLevel) != nullptr &&
4339 41 : papoBands[0]->GetOverview(iOvrLevel)->GetDataset() != nullptr)
4340 : {
4341 41 : *pbTried = TRUE;
4342 41 : return papoBands[0]->GetOverview(iOvrLevel)->GetDataset()->RasterIO(
4343 : eRWFlag, nXOffMod, nYOffMod, nXSizeMod, nYSizeMod, pData, nBufXSize,
4344 : nBufYSize, eBufType, nBandCount, panBandMap, nPixelSpace,
4345 41 : nLineSpace, nBandSpace, &sExtraArg);
4346 : }
4347 : else
4348 : {
4349 158543 : *pbTried = FALSE;
4350 158543 : return CE_None;
4351 : }
4352 : }
4353 :
4354 : /************************************************************************/
4355 : /* GetBestOverviewLevel() */
4356 : /* */
4357 : /* Returns the best overview level to satisfy the query or -1 if none */
4358 : /* Also updates nXOff, nYOff, nXSize, nYSize when returning a valid */
4359 : /* overview level */
4360 : /************************************************************************/
4361 :
4362 4 : static int GDALDatasetGetBestOverviewLevel(GDALDataset *poDS, int &nXOff,
4363 : int &nYOff, int &nXSize, int &nYSize,
4364 : int nBufXSize, int nBufYSize,
4365 : int nBandCount,
4366 : const int *panBandMap,
4367 : GDALRasterIOExtraArg *psExtraArg)
4368 : {
4369 4 : int nOverviewCount = 0;
4370 4 : GDALRasterBand *poFirstBand = nullptr;
4371 :
4372 : /* -------------------------------------------------------------------- */
4373 : /* Check that all bands have the same number of overviews and */
4374 : /* that they have all the same size and block dimensions */
4375 : /* -------------------------------------------------------------------- */
4376 12 : for (int iBand = 0; iBand < nBandCount; iBand++)
4377 : {
4378 8 : GDALRasterBand *poBand = poDS->GetRasterBand(panBandMap[iBand]);
4379 8 : if (poBand == nullptr)
4380 0 : return -1;
4381 8 : if (iBand == 0)
4382 : {
4383 4 : poFirstBand = poBand;
4384 4 : nOverviewCount = poBand->GetOverviewCount();
4385 : }
4386 4 : else if (nOverviewCount != poBand->GetOverviewCount())
4387 : {
4388 0 : CPLDebug("GDAL", "GDALDataset::GetBestOverviewLevel() ... "
4389 : "mismatched overview count, use std method.");
4390 0 : return -1;
4391 : }
4392 : else
4393 : {
4394 4 : for (int iOverview = 0; iOverview < nOverviewCount; iOverview++)
4395 : {
4396 0 : GDALRasterBand *poOvrBand = poBand->GetOverview(iOverview);
4397 : GDALRasterBand *poOvrFirstBand =
4398 0 : poFirstBand->GetOverview(iOverview);
4399 0 : if (poOvrBand == nullptr || poOvrFirstBand == nullptr)
4400 0 : continue;
4401 :
4402 0 : if (poOvrFirstBand->GetXSize() != poOvrBand->GetXSize() ||
4403 0 : poOvrFirstBand->GetYSize() != poOvrBand->GetYSize())
4404 : {
4405 0 : CPLDebug("GDAL",
4406 : "GDALDataset::GetBestOverviewLevel() ... "
4407 : "mismatched overview sizes, use std method.");
4408 0 : return -1;
4409 : }
4410 0 : int nBlockXSizeFirst = 0;
4411 0 : int nBlockYSizeFirst = 0;
4412 0 : poOvrFirstBand->GetBlockSize(&nBlockXSizeFirst,
4413 : &nBlockYSizeFirst);
4414 :
4415 0 : int nBlockXSizeCurrent = 0;
4416 0 : int nBlockYSizeCurrent = 0;
4417 0 : poOvrBand->GetBlockSize(&nBlockXSizeCurrent,
4418 : &nBlockYSizeCurrent);
4419 :
4420 0 : if (nBlockXSizeFirst != nBlockXSizeCurrent ||
4421 0 : nBlockYSizeFirst != nBlockYSizeCurrent)
4422 : {
4423 0 : CPLDebug("GDAL", "GDALDataset::GetBestOverviewLevel() ... "
4424 : "mismatched block sizes, use std method.");
4425 0 : return -1;
4426 : }
4427 : }
4428 : }
4429 : }
4430 4 : if (poFirstBand == nullptr)
4431 0 : return -1;
4432 :
4433 4 : return GDALBandGetBestOverviewLevel2(poFirstBand, nXOff, nYOff, nXSize,
4434 : nYSize, nBufXSize, nBufYSize,
4435 4 : psExtraArg);
4436 : }
4437 :
4438 : /************************************************************************/
4439 : /* BlockBasedRasterIO() */
4440 : /* */
4441 : /* This convenience function implements a dataset level */
4442 : /* RasterIO() interface based on calling down to fetch blocks, */
4443 : /* much like the GDALRasterBand::IRasterIO(), but it handles */
4444 : /* all bands at once, so that a format driver that handles a */
4445 : /* request for different bands of the same block efficiently */
4446 : /* (i.e. without re-reading interleaved data) will efficiently. */
4447 : /* */
4448 : /* This method is intended to be called by an overridden */
4449 : /* IRasterIO() method in the driver specific GDALDataset */
4450 : /* derived class. */
4451 : /* */
4452 : /* Default internal implementation of RasterIO() ... utilizes */
4453 : /* the Block access methods to satisfy the request. This would */
4454 : /* normally only be overridden by formats with overviews. */
4455 : /* */
4456 : /* To keep things relatively simple, this method does not */
4457 : /* currently take advantage of some special cases addressed in */
4458 : /* GDALRasterBand::IRasterIO(), so it is likely best to only */
4459 : /* call it when you know it will help. That is in cases where */
4460 : /* data is at 1:1 to the buffer, and you know the driver is */
4461 : /* implementing interleaved IO efficiently on a block by block */
4462 : /* basis. Overviews will be used when possible. */
4463 : /************************************************************************/
4464 :
4465 64099 : CPLErr GDALDataset::BlockBasedRasterIO(
4466 : GDALRWFlag eRWFlag, int nXOff, int nYOff, int nXSize, int nYSize,
4467 : void *pData, int nBufXSize, int nBufYSize, GDALDataType eBufType,
4468 : int nBandCount, const int *panBandMap, GSpacing nPixelSpace,
4469 : GSpacing nLineSpace, GSpacing nBandSpace, GDALRasterIOExtraArg *psExtraArg)
4470 :
4471 : {
4472 64099 : CPLAssert(nullptr != pData);
4473 :
4474 64099 : GByte **papabySrcBlock = nullptr;
4475 64099 : GDALRasterBlock *poBlock = nullptr;
4476 64099 : GDALRasterBlock **papoBlocks = nullptr;
4477 64099 : int nLBlockX = -1;
4478 64099 : int nLBlockY = -1;
4479 : int iBufYOff;
4480 : int iBufXOff;
4481 64099 : int nBlockXSize = 1;
4482 64099 : int nBlockYSize = 1;
4483 64099 : CPLErr eErr = CE_None;
4484 64099 : GDALDataType eDataType = GDT_Byte;
4485 :
4486 64099 : const bool bUseIntegerRequestCoords =
4487 64129 : (!psExtraArg->bFloatingPointWindowValidity ||
4488 30 : (nXOff == psExtraArg->dfXOff && nYOff == psExtraArg->dfYOff &&
4489 28 : nXSize == psExtraArg->dfXSize && nYSize == psExtraArg->dfYSize));
4490 :
4491 : /* -------------------------------------------------------------------- */
4492 : /* Ensure that all bands share a common block size and data type. */
4493 : /* -------------------------------------------------------------------- */
4494 303865 : for (int iBand = 0; iBand < nBandCount; iBand++)
4495 : {
4496 239766 : GDALRasterBand *poBand = GetRasterBand(panBandMap[iBand]);
4497 :
4498 239767 : if (iBand == 0)
4499 : {
4500 64097 : poBand->GetBlockSize(&nBlockXSize, &nBlockYSize);
4501 64098 : eDataType = poBand->GetRasterDataType();
4502 : }
4503 : else
4504 : {
4505 175670 : int nThisBlockXSize = 0;
4506 175670 : int nThisBlockYSize = 0;
4507 175670 : poBand->GetBlockSize(&nThisBlockXSize, &nThisBlockYSize);
4508 175668 : if (nThisBlockXSize != nBlockXSize ||
4509 175668 : nThisBlockYSize != nBlockYSize)
4510 : {
4511 0 : CPLDebug("GDAL", "GDALDataset::BlockBasedRasterIO() ... "
4512 : "mismatched block sizes, use std method.");
4513 0 : return BandBasedRasterIO(eRWFlag, nXOff, nYOff, nXSize, nYSize,
4514 : pData, nBufXSize, nBufYSize, eBufType,
4515 : nBandCount, panBandMap, nPixelSpace,
4516 0 : nLineSpace, nBandSpace, psExtraArg);
4517 : }
4518 :
4519 175669 : if (eDataType != poBand->GetRasterDataType() &&
4520 0 : (nXSize != nBufXSize || nYSize != nBufYSize))
4521 : {
4522 0 : CPLDebug("GDAL", "GDALDataset::BlockBasedRasterIO() ... "
4523 : "mismatched band data types, use std method.");
4524 0 : return BandBasedRasterIO(eRWFlag, nXOff, nYOff, nXSize, nYSize,
4525 : pData, nBufXSize, nBufYSize, eBufType,
4526 : nBandCount, panBandMap, nPixelSpace,
4527 0 : nLineSpace, nBandSpace, psExtraArg);
4528 : }
4529 : }
4530 : }
4531 :
4532 : /* ==================================================================== */
4533 : /* In this special case at full resolution we step through in */
4534 : /* blocks, turning the request over to the per-band */
4535 : /* IRasterIO(), but ensuring that all bands of one block are */
4536 : /* called before proceeding to the next. */
4537 : /* ==================================================================== */
4538 :
4539 64099 : if (nXSize == nBufXSize && nYSize == nBufYSize && bUseIntegerRequestCoords)
4540 : {
4541 : GDALRasterIOExtraArg sDummyExtraArg;
4542 64094 : INIT_RASTERIO_EXTRA_ARG(sDummyExtraArg);
4543 :
4544 64094 : int nChunkYSize = 0;
4545 64094 : int nChunkXSize = 0;
4546 :
4547 210624 : for (iBufYOff = 0; iBufYOff < nBufYSize; iBufYOff += nChunkYSize)
4548 : {
4549 147544 : const int nChunkYOff = iBufYOff + nYOff;
4550 147544 : nChunkYSize = nBlockYSize - (nChunkYOff % nBlockYSize);
4551 147544 : if (nChunkYOff + nChunkYSize > nYOff + nYSize)
4552 59160 : nChunkYSize = (nYOff + nYSize) - nChunkYOff;
4553 :
4554 818199 : for (iBufXOff = 0; iBufXOff < nBufXSize; iBufXOff += nChunkXSize)
4555 : {
4556 671667 : const int nChunkXOff = iBufXOff + nXOff;
4557 671667 : nChunkXSize = nBlockXSize - (nChunkXOff % nBlockXSize);
4558 671667 : if (nChunkXOff + nChunkXSize > nXOff + nXSize)
4559 70320 : nChunkXSize = (nXOff + nXSize) - nChunkXOff;
4560 :
4561 671667 : GByte *pabyChunkData =
4562 671667 : static_cast<GByte *>(pData) + iBufXOff * nPixelSpace +
4563 671667 : static_cast<GPtrDiff_t>(iBufYOff) * nLineSpace;
4564 :
4565 3270470 : for (int iBand = 0; iBand < nBandCount; iBand++)
4566 : {
4567 2599810 : GDALRasterBand *poBand = GetRasterBand(panBandMap[iBand]);
4568 :
4569 5199630 : eErr = poBand->IRasterIO(
4570 : eRWFlag, nChunkXOff, nChunkYOff, nChunkXSize,
4571 : nChunkYSize,
4572 2599810 : pabyChunkData +
4573 2599810 : static_cast<GPtrDiff_t>(iBand) * nBandSpace,
4574 : nChunkXSize, nChunkYSize, eBufType, nPixelSpace,
4575 2599810 : nLineSpace, &sDummyExtraArg);
4576 2599810 : if (eErr != CE_None)
4577 1014 : return eErr;
4578 : }
4579 : }
4580 :
4581 165361 : if (psExtraArg->pfnProgress != nullptr &&
4582 18829 : !psExtraArg->pfnProgress(
4583 165361 : 1.0 * std::min(nBufYSize, iBufYOff + nChunkYSize) /
4584 : nBufYSize,
4585 : "", psExtraArg->pProgressData))
4586 : {
4587 2 : return CE_Failure;
4588 : }
4589 : }
4590 :
4591 63080 : return CE_None;
4592 : }
4593 :
4594 : /* Below code is not compatible with that case. It would need a complete */
4595 : /* separate code like done in GDALRasterBand::IRasterIO. */
4596 5 : if (eRWFlag == GF_Write && (nBufXSize < nXSize || nBufYSize < nYSize))
4597 : {
4598 0 : return BandBasedRasterIO(eRWFlag, nXOff, nYOff, nXSize, nYSize, pData,
4599 : nBufXSize, nBufYSize, eBufType, nBandCount,
4600 : panBandMap, nPixelSpace, nLineSpace,
4601 0 : nBandSpace, psExtraArg);
4602 : }
4603 :
4604 : /* We could have a smarter implementation, but that will do for now */
4605 5 : if (psExtraArg->eResampleAlg != GRIORA_NearestNeighbour &&
4606 0 : (nBufXSize != nXSize || nBufYSize != nYSize))
4607 : {
4608 0 : return BandBasedRasterIO(eRWFlag, nXOff, nYOff, nXSize, nYSize, pData,
4609 : nBufXSize, nBufYSize, eBufType, nBandCount,
4610 : panBandMap, nPixelSpace, nLineSpace,
4611 0 : nBandSpace, psExtraArg);
4612 : }
4613 :
4614 : /* ==================================================================== */
4615 : /* Loop reading required source blocks to satisfy output */
4616 : /* request. This is the most general implementation. */
4617 : /* ==================================================================== */
4618 :
4619 5 : const int nBandDataSize = GDALGetDataTypeSizeBytes(eDataType);
4620 :
4621 : papabySrcBlock =
4622 4 : static_cast<GByte **>(CPLCalloc(sizeof(GByte *), nBandCount));
4623 : papoBlocks =
4624 4 : static_cast<GDALRasterBlock **>(CPLCalloc(sizeof(void *), nBandCount));
4625 :
4626 : /* -------------------------------------------------------------------- */
4627 : /* Select an overview level if appropriate. */
4628 : /* -------------------------------------------------------------------- */
4629 :
4630 : GDALRasterIOExtraArg sExtraArg;
4631 4 : GDALCopyRasterIOExtraArg(&sExtraArg, psExtraArg);
4632 4 : const int nOverviewLevel = GDALDatasetGetBestOverviewLevel(
4633 : this, nXOff, nYOff, nXSize, nYSize, nBufXSize, nBufYSize, nBandCount,
4634 : panBandMap, &sExtraArg);
4635 4 : if (nOverviewLevel >= 0)
4636 : {
4637 2 : GetRasterBand(panBandMap[0])
4638 2 : ->GetOverview(nOverviewLevel)
4639 2 : ->GetBlockSize(&nBlockXSize, &nBlockYSize);
4640 : }
4641 :
4642 4 : double dfXOff = nXOff;
4643 4 : double dfYOff = nYOff;
4644 4 : double dfXSize = nXSize;
4645 4 : double dfYSize = nYSize;
4646 4 : if (sExtraArg.bFloatingPointWindowValidity)
4647 : {
4648 2 : dfXOff = sExtraArg.dfXOff;
4649 2 : dfYOff = sExtraArg.dfYOff;
4650 2 : dfXSize = sExtraArg.dfXSize;
4651 2 : dfYSize = sExtraArg.dfYSize;
4652 : }
4653 :
4654 : /* -------------------------------------------------------------------- */
4655 : /* Compute stepping increment. */
4656 : /* -------------------------------------------------------------------- */
4657 4 : const double dfSrcXInc = dfXSize / static_cast<double>(nBufXSize);
4658 4 : const double dfSrcYInc = dfYSize / static_cast<double>(nBufYSize);
4659 :
4660 4 : constexpr double EPS = 1e-10;
4661 : /* -------------------------------------------------------------------- */
4662 : /* Loop over buffer computing source locations. */
4663 : /* -------------------------------------------------------------------- */
4664 36 : for (iBufYOff = 0; iBufYOff < nBufYSize; iBufYOff++)
4665 : {
4666 : GPtrDiff_t iSrcOffset;
4667 :
4668 : // Add small epsilon to avoid some numeric precision issues.
4669 32 : const double dfSrcY = (iBufYOff + 0.5) * dfSrcYInc + dfYOff + EPS;
4670 32 : const int iSrcY = static_cast<int>(std::min(
4671 32 : std::max(0.0, dfSrcY), static_cast<double>(nRasterYSize - 1)));
4672 :
4673 32 : GPtrDiff_t iBufOffset = static_cast<GPtrDiff_t>(iBufYOff) *
4674 : static_cast<GPtrDiff_t>(nLineSpace);
4675 :
4676 302 : for (iBufXOff = 0; iBufXOff < nBufXSize; iBufXOff++)
4677 : {
4678 270 : const double dfSrcX = (iBufXOff + 0.5) * dfSrcXInc + dfXOff + EPS;
4679 270 : const int iSrcX = static_cast<int>(std::min(
4680 270 : std::max(0.0, dfSrcX), static_cast<double>(nRasterXSize - 1)));
4681 :
4682 : // FIXME: this code likely doesn't work if the dirty block gets
4683 : // flushed to disk before being completely written. In the meantime,
4684 : // bJustInitialize should probably be set to FALSE even if it is not
4685 : // ideal performance wise, and for lossy compression
4686 :
4687 : /* --------------------------------------------------------------------
4688 : */
4689 : /* Ensure we have the appropriate block loaded. */
4690 : /* --------------------------------------------------------------------
4691 : */
4692 270 : if (iSrcX < nLBlockX * nBlockXSize ||
4693 270 : iSrcX - nBlockXSize >= nLBlockX * nBlockXSize ||
4694 266 : iSrcY < nLBlockY * nBlockYSize ||
4695 266 : iSrcY - nBlockYSize >= nLBlockY * nBlockYSize)
4696 : {
4697 4 : nLBlockX = iSrcX / nBlockXSize;
4698 4 : nLBlockY = iSrcY / nBlockYSize;
4699 :
4700 4 : const bool bJustInitialize =
4701 0 : eRWFlag == GF_Write && nYOff <= nLBlockY * nBlockYSize &&
4702 0 : nYOff + nYSize - nBlockYSize >= nLBlockY * nBlockYSize &&
4703 4 : nXOff <= nLBlockX * nBlockXSize &&
4704 0 : nXOff + nXSize - nBlockXSize >= nLBlockX * nBlockXSize;
4705 : /*bool bMemZeroBuffer = FALSE;
4706 : if( eRWFlag == GF_Write && !bJustInitialize &&
4707 : nXOff <= nLBlockX * nBlockXSize &&
4708 : nYOff <= nLBlockY * nBlockYSize &&
4709 : (nXOff + nXSize >= (nLBlockX+1) * nBlockXSize ||
4710 : (nXOff + nXSize == GetRasterXSize() &&
4711 : (nLBlockX+1) * nBlockXSize > GetRasterXSize())) &&
4712 : (nYOff + nYSize >= (nLBlockY+1) * nBlockYSize ||
4713 : (nYOff + nYSize == GetRasterYSize() &&
4714 : (nLBlockY+1) * nBlockYSize > GetRasterYSize())) )
4715 : {
4716 : bJustInitialize = TRUE;
4717 : bMemZeroBuffer = TRUE;
4718 : }*/
4719 12 : for (int iBand = 0; iBand < nBandCount; iBand++)
4720 : {
4721 8 : GDALRasterBand *poBand = GetRasterBand(panBandMap[iBand]);
4722 8 : if (nOverviewLevel >= 0)
4723 2 : poBand = poBand->GetOverview(nOverviewLevel);
4724 16 : poBlock = poBand->GetLockedBlockRef(nLBlockX, nLBlockY,
4725 8 : bJustInitialize);
4726 8 : if (poBlock == nullptr)
4727 : {
4728 0 : eErr = CE_Failure;
4729 0 : goto CleanupAndReturn;
4730 : }
4731 :
4732 8 : if (eRWFlag == GF_Write)
4733 0 : poBlock->MarkDirty();
4734 :
4735 8 : if (papoBlocks[iBand] != nullptr)
4736 0 : papoBlocks[iBand]->DropLock();
4737 :
4738 8 : papoBlocks[iBand] = poBlock;
4739 :
4740 8 : papabySrcBlock[iBand] =
4741 8 : static_cast<GByte *>(poBlock->GetDataRef());
4742 : /*if( bMemZeroBuffer )
4743 : {
4744 : memset(papabySrcBlock[iBand], 0,
4745 : static_cast<GPtrDiff_t>(nBandDataSize) * nBlockXSize
4746 : * nBlockYSize);
4747 : }*/
4748 : }
4749 : }
4750 :
4751 : /* --------------------------------------------------------------------
4752 : */
4753 : /* Copy over this pixel of data. */
4754 : /* --------------------------------------------------------------------
4755 : */
4756 270 : iSrcOffset = (static_cast<GPtrDiff_t>(iSrcX) -
4757 270 : static_cast<GPtrDiff_t>(nLBlockX) * nBlockXSize +
4758 270 : (static_cast<GPtrDiff_t>(iSrcY) -
4759 270 : static_cast<GPtrDiff_t>(nLBlockY) * nBlockYSize) *
4760 270 : nBlockXSize) *
4761 270 : nBandDataSize;
4762 :
4763 980 : for (int iBand = 0; iBand < nBandCount; iBand++)
4764 : {
4765 710 : GByte *pabySrcBlock = papabySrcBlock[iBand];
4766 710 : GPtrDiff_t iBandBufOffset =
4767 710 : iBufOffset + static_cast<GPtrDiff_t>(iBand) *
4768 : static_cast<GPtrDiff_t>(nBandSpace);
4769 :
4770 710 : if (eDataType == eBufType)
4771 : {
4772 710 : if (eRWFlag == GF_Read)
4773 710 : memcpy(static_cast<GByte *>(pData) + iBandBufOffset,
4774 710 : pabySrcBlock + iSrcOffset, nBandDataSize);
4775 : else
4776 0 : memcpy(pabySrcBlock + iSrcOffset,
4777 : static_cast<const GByte *>(pData) +
4778 0 : iBandBufOffset,
4779 : nBandDataSize);
4780 : }
4781 : else
4782 : {
4783 : /* type to type conversion ... ouch, this is expensive way
4784 : of handling single words */
4785 :
4786 0 : if (eRWFlag == GF_Read)
4787 0 : GDALCopyWords64(pabySrcBlock + iSrcOffset, eDataType, 0,
4788 : static_cast<GByte *>(pData) +
4789 0 : iBandBufOffset,
4790 : eBufType, 0, 1);
4791 : else
4792 0 : GDALCopyWords64(static_cast<const GByte *>(pData) +
4793 0 : iBandBufOffset,
4794 0 : eBufType, 0, pabySrcBlock + iSrcOffset,
4795 : eDataType, 0, 1);
4796 : }
4797 : }
4798 :
4799 270 : iBufOffset += static_cast<int>(nPixelSpace);
4800 : }
4801 : }
4802 :
4803 : /* -------------------------------------------------------------------- */
4804 : /* CleanupAndReturn. */
4805 : /* -------------------------------------------------------------------- */
4806 4 : CleanupAndReturn:
4807 4 : CPLFree(papabySrcBlock);
4808 4 : if (papoBlocks != nullptr)
4809 : {
4810 12 : for (int iBand = 0; iBand < nBandCount; iBand++)
4811 : {
4812 8 : if (papoBlocks[iBand] != nullptr)
4813 8 : papoBlocks[iBand]->DropLock();
4814 : }
4815 4 : CPLFree(papoBlocks);
4816 : }
4817 :
4818 4 : return eErr;
4819 : }
4820 :
4821 : //! @endcond
4822 :
4823 : /************************************************************************/
4824 : /* GDALCopyWholeRasterGetSwathSize() */
4825 : /************************************************************************/
4826 :
4827 3266 : static void GDALCopyWholeRasterGetSwathSize(GDALRasterBand *poSrcPrototypeBand,
4828 : GDALRasterBand *poDstPrototypeBand,
4829 : int nBandCount,
4830 : int bDstIsCompressed,
4831 : int bInterleave, int *pnSwathCols,
4832 : int *pnSwathLines)
4833 : {
4834 3266 : GDALDataType eDT = poDstPrototypeBand->GetRasterDataType();
4835 3266 : int nSrcBlockXSize = 0;
4836 3266 : int nSrcBlockYSize = 0;
4837 3266 : int nBlockXSize = 0;
4838 3266 : int nBlockYSize = 0;
4839 :
4840 3266 : int nXSize = poSrcPrototypeBand->GetXSize();
4841 3266 : int nYSize = poSrcPrototypeBand->GetYSize();
4842 :
4843 3266 : poSrcPrototypeBand->GetBlockSize(&nSrcBlockXSize, &nSrcBlockYSize);
4844 3266 : poDstPrototypeBand->GetBlockSize(&nBlockXSize, &nBlockYSize);
4845 :
4846 3266 : const int nMaxBlockXSize = std::max(nBlockXSize, nSrcBlockXSize);
4847 3266 : const int nMaxBlockYSize = std::max(nBlockYSize, nSrcBlockYSize);
4848 :
4849 3266 : int nPixelSize = GDALGetDataTypeSizeBytes(eDT);
4850 3266 : if (bInterleave)
4851 555 : nPixelSize *= nBandCount;
4852 :
4853 : // aim for one row of blocks. Do not settle for less.
4854 3266 : int nSwathCols = nXSize;
4855 3266 : int nSwathLines = nMaxBlockYSize;
4856 :
4857 : const char *pszSrcCompression =
4858 3266 : poSrcPrototypeBand->GetMetadataItem("COMPRESSION", "IMAGE_STRUCTURE");
4859 3266 : if (pszSrcCompression == nullptr)
4860 : {
4861 3240 : auto poSrcDS = poSrcPrototypeBand->GetDataset();
4862 3240 : if (poSrcDS)
4863 : pszSrcCompression =
4864 3234 : poSrcDS->GetMetadataItem("COMPRESSION", "IMAGE_STRUCTURE");
4865 : }
4866 :
4867 : /* -------------------------------------------------------------------- */
4868 : /* What will our swath size be? */
4869 : /* -------------------------------------------------------------------- */
4870 : // When writing interleaved data in a compressed format, we want to be sure
4871 : // that each block will only be written once, so the swath size must not be
4872 : // greater than the block cache.
4873 3266 : const char *pszSwathSize = CPLGetConfigOption("GDAL_SWATH_SIZE", nullptr);
4874 : int nTargetSwathSize;
4875 3266 : if (pszSwathSize != nullptr)
4876 0 : nTargetSwathSize = static_cast<int>(
4877 0 : std::min(GIntBig(INT_MAX), CPLAtoGIntBig(pszSwathSize)));
4878 : else
4879 : {
4880 : // As a default, take one 1/4 of the cache size.
4881 3266 : nTargetSwathSize = static_cast<int>(
4882 3266 : std::min(GIntBig(INT_MAX), GDALGetCacheMax64() / 4));
4883 :
4884 : // but if the minimum idal swath buf size is less, then go for it to
4885 : // avoid unnecessarily abusing RAM usage.
4886 : // but try to use 10 MB at least.
4887 3266 : GIntBig nIdealSwathBufSize =
4888 3266 : static_cast<GIntBig>(nSwathCols) * nSwathLines * nPixelSize;
4889 3266 : int nMinTargetSwathSize = 10 * 1000 * 1000;
4890 :
4891 3266 : if ((poSrcPrototypeBand->GetSuggestedBlockAccessPattern() &
4892 3266 : GSBAP_LARGEST_CHUNK_POSSIBLE) != 0)
4893 : {
4894 1 : nMinTargetSwathSize = nTargetSwathSize;
4895 : }
4896 :
4897 3266 : if (nIdealSwathBufSize < nTargetSwathSize &&
4898 3256 : nIdealSwathBufSize < nMinTargetSwathSize)
4899 : {
4900 3253 : nIdealSwathBufSize = nMinTargetSwathSize;
4901 : }
4902 :
4903 3266 : if (pszSrcCompression != nullptr &&
4904 182 : EQUAL(pszSrcCompression, "JPEG2000") &&
4905 0 : (!bDstIsCompressed || ((nSrcBlockXSize % nBlockXSize) == 0 &&
4906 0 : (nSrcBlockYSize % nBlockYSize) == 0)))
4907 : {
4908 2 : nIdealSwathBufSize =
4909 4 : std::max(nIdealSwathBufSize, static_cast<GIntBig>(nSwathCols) *
4910 2 : nSrcBlockYSize * nPixelSize);
4911 : }
4912 3266 : if (nTargetSwathSize > nIdealSwathBufSize)
4913 3253 : nTargetSwathSize = static_cast<int>(
4914 3253 : std::min(GIntBig(INT_MAX), nIdealSwathBufSize));
4915 : }
4916 :
4917 3266 : if (nTargetSwathSize < 1000000)
4918 8 : nTargetSwathSize = 1000000;
4919 :
4920 : /* But let's check that */
4921 3487 : if (bDstIsCompressed && bInterleave &&
4922 221 : nTargetSwathSize > GDALGetCacheMax64())
4923 : {
4924 0 : CPLError(CE_Warning, CPLE_AppDefined,
4925 : "When translating into a compressed interleave format, "
4926 : "the block cache size (" CPL_FRMT_GIB ") "
4927 : "should be at least the size of the swath (%d) "
4928 : "(GDAL_SWATH_SIZE config. option)",
4929 : GDALGetCacheMax64(), nTargetSwathSize);
4930 : }
4931 :
4932 : #define IS_DIVIDER_OF(x, y) ((y) % (x) == 0)
4933 : #define ROUND_TO(x, y) (((x) / (y)) * (y))
4934 :
4935 : // if both input and output datasets are tiled, that the tile dimensions
4936 : // are "compatible", try to stick to a swath dimension that is a multiple
4937 : // of input and output block dimensions.
4938 3266 : if (nBlockXSize != nXSize && nSrcBlockXSize != nXSize &&
4939 39 : IS_DIVIDER_OF(nBlockXSize, nMaxBlockXSize) &&
4940 39 : IS_DIVIDER_OF(nSrcBlockXSize, nMaxBlockXSize) &&
4941 39 : IS_DIVIDER_OF(nBlockYSize, nMaxBlockYSize) &&
4942 39 : IS_DIVIDER_OF(nSrcBlockYSize, nMaxBlockYSize))
4943 : {
4944 39 : if (static_cast<GIntBig>(nMaxBlockXSize) * nMaxBlockYSize *
4945 39 : nPixelSize <=
4946 39 : static_cast<GIntBig>(nTargetSwathSize))
4947 : {
4948 39 : nSwathCols = nTargetSwathSize / (nMaxBlockYSize * nPixelSize);
4949 39 : nSwathCols = ROUND_TO(nSwathCols, nMaxBlockXSize);
4950 39 : if (nSwathCols == 0)
4951 0 : nSwathCols = nMaxBlockXSize;
4952 39 : if (nSwathCols > nXSize)
4953 37 : nSwathCols = nXSize;
4954 39 : nSwathLines = nMaxBlockYSize;
4955 :
4956 39 : if (static_cast<GIntBig>(nSwathCols) * nSwathLines * nPixelSize >
4957 39 : static_cast<GIntBig>(nTargetSwathSize))
4958 : {
4959 0 : nSwathCols = nXSize;
4960 0 : nSwathLines = nBlockYSize;
4961 : }
4962 : }
4963 : }
4964 :
4965 3266 : const GIntBig nMemoryPerCol = static_cast<GIntBig>(nSwathCols) * nPixelSize;
4966 3266 : const GIntBig nSwathBufSize = nMemoryPerCol * nSwathLines;
4967 3266 : if (nSwathBufSize > static_cast<GIntBig>(nTargetSwathSize))
4968 : {
4969 1 : nSwathLines = static_cast<int>(nTargetSwathSize / nMemoryPerCol);
4970 1 : if (nSwathLines == 0)
4971 1 : nSwathLines = 1;
4972 :
4973 1 : CPLDebug(
4974 : "GDAL",
4975 : "GDALCopyWholeRasterGetSwathSize(): adjusting to %d line swath "
4976 : "since requirement (" CPL_FRMT_GIB " bytes) exceed target swath "
4977 : "size (%d bytes) (GDAL_SWATH_SIZE config. option)",
4978 1 : nSwathLines, nBlockYSize * nMemoryPerCol, nTargetSwathSize);
4979 : }
4980 : // If we are processing single scans, try to handle several at once.
4981 : // If we are handling swaths already, only grow the swath if a row
4982 : // of blocks is substantially less than our target buffer size.
4983 3265 : else if (nSwathLines == 1 ||
4984 2716 : nMemoryPerCol * nSwathLines <
4985 2716 : static_cast<GIntBig>(nTargetSwathSize) / 10)
4986 : {
4987 3237 : nSwathLines = std::min(
4988 : nYSize,
4989 3237 : std::max(1, static_cast<int>(nTargetSwathSize / nMemoryPerCol)));
4990 :
4991 : /* If possible try to align to source and target block height */
4992 3237 : if ((nSwathLines % nMaxBlockYSize) != 0 &&
4993 257 : nSwathLines > nMaxBlockYSize &&
4994 257 : IS_DIVIDER_OF(nBlockYSize, nMaxBlockYSize) &&
4995 228 : IS_DIVIDER_OF(nSrcBlockYSize, nMaxBlockYSize))
4996 206 : nSwathLines = ROUND_TO(nSwathLines, nMaxBlockYSize);
4997 : }
4998 :
4999 3266 : if (pszSrcCompression != nullptr && EQUAL(pszSrcCompression, "JPEG2000") &&
5000 0 : (!bDstIsCompressed || (IS_DIVIDER_OF(nBlockXSize, nSrcBlockXSize) &&
5001 0 : IS_DIVIDER_OF(nBlockYSize, nSrcBlockYSize))))
5002 : {
5003 : // Typical use case: converting from Pleaiades that is 2048x2048 tiled.
5004 2 : if (nSwathLines < nSrcBlockYSize)
5005 : {
5006 0 : nSwathLines = nSrcBlockYSize;
5007 :
5008 : // Number of pixels that can be read/write simultaneously.
5009 0 : nSwathCols = nTargetSwathSize / (nSrcBlockXSize * nPixelSize);
5010 0 : nSwathCols = ROUND_TO(nSwathCols, nSrcBlockXSize);
5011 0 : if (nSwathCols == 0)
5012 0 : nSwathCols = nSrcBlockXSize;
5013 0 : if (nSwathCols > nXSize)
5014 0 : nSwathCols = nXSize;
5015 :
5016 0 : CPLDebug(
5017 : "GDAL",
5018 : "GDALCopyWholeRasterGetSwathSize(): because of compression and "
5019 : "too high block, "
5020 : "use partial width at one time");
5021 : }
5022 2 : else if ((nSwathLines % nSrcBlockYSize) != 0)
5023 : {
5024 : /* Round on a multiple of nSrcBlockYSize */
5025 0 : nSwathLines = ROUND_TO(nSwathLines, nSrcBlockYSize);
5026 0 : CPLDebug(
5027 : "GDAL",
5028 : "GDALCopyWholeRasterGetSwathSize(): because of compression, "
5029 : "round nSwathLines to block height : %d",
5030 : nSwathLines);
5031 : }
5032 : }
5033 3264 : else if (bDstIsCompressed)
5034 : {
5035 412 : if (nSwathLines < nBlockYSize)
5036 : {
5037 146 : nSwathLines = nBlockYSize;
5038 :
5039 : // Number of pixels that can be read/write simultaneously.
5040 146 : nSwathCols = nTargetSwathSize / (nSwathLines * nPixelSize);
5041 146 : nSwathCols = ROUND_TO(nSwathCols, nBlockXSize);
5042 146 : if (nSwathCols == 0)
5043 0 : nSwathCols = nBlockXSize;
5044 146 : if (nSwathCols > nXSize)
5045 146 : nSwathCols = nXSize;
5046 :
5047 146 : CPLDebug(
5048 : "GDAL",
5049 : "GDALCopyWholeRasterGetSwathSize(): because of compression and "
5050 : "too high block, "
5051 : "use partial width at one time");
5052 : }
5053 266 : else if ((nSwathLines % nBlockYSize) != 0)
5054 : {
5055 : // Round on a multiple of nBlockYSize.
5056 9 : nSwathLines = ROUND_TO(nSwathLines, nBlockYSize);
5057 9 : CPLDebug(
5058 : "GDAL",
5059 : "GDALCopyWholeRasterGetSwathSize(): because of compression, "
5060 : "round nSwathLines to block height : %d",
5061 : nSwathLines);
5062 : }
5063 : }
5064 :
5065 3266 : *pnSwathCols = nSwathCols;
5066 3266 : *pnSwathLines = nSwathLines;
5067 3266 : }
5068 :
5069 : /************************************************************************/
5070 : /* GDALDatasetCopyWholeRaster() */
5071 : /************************************************************************/
5072 :
5073 : /**
5074 : * \brief Copy all dataset raster data.
5075 : *
5076 : * This function copies the complete raster contents of one dataset to
5077 : * another similarly configured dataset. The source and destination
5078 : * dataset must have the same number of bands, and the same width
5079 : * and height. The bands do not have to have the same data type.
5080 : *
5081 : * This function is primarily intended to support implementation of
5082 : * driver specific CreateCopy() functions. It implements efficient copying,
5083 : * in particular "chunking" the copy in substantial blocks and, if appropriate,
5084 : * performing the transfer in a pixel interleaved fashion.
5085 : *
5086 : * Currently the only papszOptions value supported are :
5087 : * <ul>
5088 : * <li>"INTERLEAVE=PIXEL/BAND" to force pixel (resp. band) interleaved read and
5089 : * write access pattern (this does not modify the layout of the destination
5090 : * data)</li> <li>"COMPRESSED=YES" to force alignment on target dataset block
5091 : * sizes to achieve best compression.</li> <li>"SKIP_HOLES=YES" to skip chunks
5092 : * for which GDALGetDataCoverageStatus() returns GDAL_DATA_COVERAGE_STATUS_EMPTY
5093 : * (GDAL >= 2.2)</li>
5094 : * </ul>
5095 : * More options may be supported in the future.
5096 : *
5097 : * @param hSrcDS the source dataset
5098 : * @param hDstDS the destination dataset
5099 : * @param papszOptions transfer hints in "StringList" Name=Value format.
5100 : * @param pfnProgress progress reporting function.
5101 : * @param pProgressData callback data for progress function.
5102 : *
5103 : * @return CE_None on success, or CE_Failure on failure.
5104 : */
5105 :
5106 3238 : CPLErr CPL_STDCALL GDALDatasetCopyWholeRaster(GDALDatasetH hSrcDS,
5107 : GDALDatasetH hDstDS,
5108 : CSLConstList papszOptions,
5109 : GDALProgressFunc pfnProgress,
5110 : void *pProgressData)
5111 :
5112 : {
5113 3238 : VALIDATE_POINTER1(hSrcDS, "GDALDatasetCopyWholeRaster", CE_Failure);
5114 3238 : VALIDATE_POINTER1(hDstDS, "GDALDatasetCopyWholeRaster", CE_Failure);
5115 :
5116 3238 : GDALDataset *poSrcDS = GDALDataset::FromHandle(hSrcDS);
5117 3238 : GDALDataset *poDstDS = GDALDataset::FromHandle(hDstDS);
5118 :
5119 3238 : if (pfnProgress == nullptr)
5120 0 : pfnProgress = GDALDummyProgress;
5121 :
5122 : /* -------------------------------------------------------------------- */
5123 : /* Confirm the datasets match in size and band counts. */
5124 : /* -------------------------------------------------------------------- */
5125 3238 : const int nXSize = poDstDS->GetRasterXSize();
5126 3238 : const int nYSize = poDstDS->GetRasterYSize();
5127 3238 : const int nBandCount = poDstDS->GetRasterCount();
5128 :
5129 3238 : if (poSrcDS->GetRasterXSize() != nXSize ||
5130 6476 : poSrcDS->GetRasterYSize() != nYSize ||
5131 3238 : poSrcDS->GetRasterCount() != nBandCount)
5132 : {
5133 0 : CPLError(CE_Failure, CPLE_AppDefined,
5134 : "Input and output dataset sizes or band counts do not\n"
5135 : "match in GDALDatasetCopyWholeRaster()");
5136 0 : return CE_Failure;
5137 : }
5138 :
5139 : /* -------------------------------------------------------------------- */
5140 : /* Report preliminary (0) progress. */
5141 : /* -------------------------------------------------------------------- */
5142 3238 : if (!pfnProgress(0.0, nullptr, pProgressData))
5143 : {
5144 1 : CPLError(CE_Failure, CPLE_UserInterrupt,
5145 : "User terminated CreateCopy()");
5146 1 : return CE_Failure;
5147 : }
5148 :
5149 : /* -------------------------------------------------------------------- */
5150 : /* Get our prototype band, and assume the others are similarly */
5151 : /* configured. */
5152 : /* -------------------------------------------------------------------- */
5153 3237 : if (nBandCount == 0)
5154 0 : return CE_None;
5155 :
5156 3237 : GDALRasterBand *poSrcPrototypeBand = poSrcDS->GetRasterBand(1);
5157 3237 : GDALRasterBand *poDstPrototypeBand = poDstDS->GetRasterBand(1);
5158 3237 : GDALDataType eDT = poDstPrototypeBand->GetRasterDataType();
5159 :
5160 : /* -------------------------------------------------------------------- */
5161 : /* Do we want to try and do the operation in a pixel */
5162 : /* interleaved fashion? */
5163 : /* -------------------------------------------------------------------- */
5164 3237 : bool bInterleave = false;
5165 : const char *pszInterleave =
5166 3237 : poSrcDS->GetMetadataItem("INTERLEAVE", "IMAGE_STRUCTURE");
5167 3237 : if (pszInterleave != nullptr &&
5168 2848 : (EQUAL(pszInterleave, "PIXEL") || EQUAL(pszInterleave, "LINE")))
5169 188 : bInterleave = true;
5170 :
5171 3237 : pszInterleave = poDstDS->GetMetadataItem("INTERLEAVE", "IMAGE_STRUCTURE");
5172 3237 : if (pszInterleave != nullptr &&
5173 2770 : (EQUAL(pszInterleave, "PIXEL") || EQUAL(pszInterleave, "LINE")))
5174 502 : bInterleave = true;
5175 :
5176 3237 : pszInterleave = CSLFetchNameValue(papszOptions, "INTERLEAVE");
5177 3237 : if (pszInterleave != nullptr && EQUAL(pszInterleave, "PIXEL"))
5178 5 : bInterleave = true;
5179 3232 : else if (pszInterleave != nullptr && EQUAL(pszInterleave, "BAND"))
5180 13 : bInterleave = false;
5181 : // attributes is specific to the TileDB driver
5182 3219 : else if (pszInterleave != nullptr && EQUAL(pszInterleave, "ATTRIBUTES"))
5183 4 : bInterleave = true;
5184 3215 : else if (pszInterleave != nullptr)
5185 : {
5186 0 : CPLError(CE_Warning, CPLE_NotSupported,
5187 : "Unsupported value for option INTERLEAVE");
5188 : }
5189 :
5190 : // If the destination is compressed, we must try to write blocks just once,
5191 : // to save disk space (GTiff case for example), and to avoid data loss
5192 : // (JPEG compression for example).
5193 3237 : bool bDstIsCompressed = false;
5194 : const char *pszDstCompressed =
5195 3237 : CSLFetchNameValue(papszOptions, "COMPRESSED");
5196 3237 : if (pszDstCompressed != nullptr && CPLTestBool(pszDstCompressed))
5197 386 : bDstIsCompressed = true;
5198 :
5199 : /* -------------------------------------------------------------------- */
5200 : /* What will our swath size be? */
5201 : /* -------------------------------------------------------------------- */
5202 :
5203 3237 : int nSwathCols = 0;
5204 3237 : int nSwathLines = 0;
5205 3237 : GDALCopyWholeRasterGetSwathSize(poSrcPrototypeBand, poDstPrototypeBand,
5206 : nBandCount, bDstIsCompressed, bInterleave,
5207 : &nSwathCols, &nSwathLines);
5208 :
5209 3237 : int nPixelSize = GDALGetDataTypeSizeBytes(eDT);
5210 3237 : if (bInterleave)
5211 555 : nPixelSize *= nBandCount;
5212 :
5213 3237 : void *pSwathBuf = VSI_MALLOC3_VERBOSE(nSwathCols, nSwathLines, nPixelSize);
5214 3237 : if (pSwathBuf == nullptr)
5215 : {
5216 0 : return CE_Failure;
5217 : }
5218 :
5219 3237 : CPLDebug("GDAL",
5220 : "GDALDatasetCopyWholeRaster(): %d*%d swaths, bInterleave=%d",
5221 : nSwathCols, nSwathLines, static_cast<int>(bInterleave));
5222 :
5223 : // Advise the source raster that we are going to read it completely
5224 : // Note: this might already have been done by GDALCreateCopy() in the
5225 : // likely case this function is indirectly called by it
5226 3237 : poSrcDS->AdviseRead(0, 0, nXSize, nYSize, nXSize, nYSize, eDT, nBandCount,
5227 3237 : nullptr, nullptr);
5228 :
5229 : /* ==================================================================== */
5230 : /* Band oriented (uninterleaved) case. */
5231 : /* ==================================================================== */
5232 3237 : CPLErr eErr = CE_None;
5233 : const bool bCheckHoles =
5234 3237 : CPLTestBool(CSLFetchNameValueDef(papszOptions, "SKIP_HOLES", "NO"));
5235 :
5236 3237 : if (!bInterleave)
5237 : {
5238 : GDALRasterIOExtraArg sExtraArg;
5239 2682 : INIT_RASTERIO_EXTRA_ARG(sExtraArg);
5240 2682 : CPL_IGNORE_RET_VAL(sExtraArg.pfnProgress); // to make cppcheck happy
5241 :
5242 8046 : const GIntBig nTotalBlocks = static_cast<GIntBig>(nBandCount) *
5243 2682 : DIV_ROUND_UP(nYSize, nSwathLines) *
5244 2682 : DIV_ROUND_UP(nXSize, nSwathCols);
5245 2682 : GIntBig nBlocksDone = 0;
5246 :
5247 7794 : for (int iBand = 0; iBand < nBandCount && eErr == CE_None; iBand++)
5248 : {
5249 5112 : int nBand = iBand + 1;
5250 :
5251 10499 : for (int iY = 0; iY < nYSize && eErr == CE_None; iY += nSwathLines)
5252 : {
5253 5387 : int nThisLines = nSwathLines;
5254 :
5255 5387 : if (iY + nThisLines > nYSize)
5256 380 : nThisLines = nYSize - iY;
5257 :
5258 10774 : for (int iX = 0; iX < nXSize && eErr == CE_None;
5259 5387 : iX += nSwathCols)
5260 : {
5261 5387 : int nThisCols = nSwathCols;
5262 :
5263 5387 : if (iX + nThisCols > nXSize)
5264 0 : nThisCols = nXSize - iX;
5265 :
5266 5387 : int nStatus = GDAL_DATA_COVERAGE_STATUS_DATA;
5267 5387 : if (bCheckHoles)
5268 : {
5269 : nStatus = poSrcDS->GetRasterBand(nBand)
5270 3698 : ->GetDataCoverageStatus(
5271 : iX, iY, nThisCols, nThisLines,
5272 : GDAL_DATA_COVERAGE_STATUS_DATA);
5273 : }
5274 5387 : if (nStatus & GDAL_DATA_COVERAGE_STATUS_DATA)
5275 : {
5276 5383 : sExtraArg.pfnProgress = GDALScaledProgress;
5277 10766 : sExtraArg.pProgressData = GDALCreateScaledProgress(
5278 5383 : nBlocksDone / static_cast<double>(nTotalBlocks),
5279 5383 : (nBlocksDone + 0.5) /
5280 5383 : static_cast<double>(nTotalBlocks),
5281 : pfnProgress, pProgressData);
5282 5383 : if (sExtraArg.pProgressData == nullptr)
5283 1659 : sExtraArg.pfnProgress = nullptr;
5284 :
5285 5383 : eErr = poSrcDS->RasterIO(GF_Read, iX, iY, nThisCols,
5286 : nThisLines, pSwathBuf,
5287 : nThisCols, nThisLines, eDT, 1,
5288 : &nBand, 0, 0, 0, &sExtraArg);
5289 :
5290 5383 : GDALDestroyScaledProgress(sExtraArg.pProgressData);
5291 :
5292 5383 : if (eErr == CE_None)
5293 5376 : eErr = poDstDS->RasterIO(
5294 : GF_Write, iX, iY, nThisCols, nThisLines,
5295 : pSwathBuf, nThisCols, nThisLines, eDT, 1,
5296 : &nBand, 0, 0, 0, nullptr);
5297 : }
5298 :
5299 5387 : nBlocksDone++;
5300 10732 : if (eErr == CE_None &&
5301 5345 : !pfnProgress(nBlocksDone /
5302 5345 : static_cast<double>(nTotalBlocks),
5303 : nullptr, pProgressData))
5304 : {
5305 2 : eErr = CE_Failure;
5306 2 : CPLError(CE_Failure, CPLE_UserInterrupt,
5307 : "User terminated CreateCopy()");
5308 : }
5309 : }
5310 : }
5311 : }
5312 : }
5313 :
5314 : /* ==================================================================== */
5315 : /* Pixel interleaved case. */
5316 : /* ==================================================================== */
5317 : else /* if( bInterleave ) */
5318 : {
5319 : GDALRasterIOExtraArg sExtraArg;
5320 555 : INIT_RASTERIO_EXTRA_ARG(sExtraArg);
5321 555 : CPL_IGNORE_RET_VAL(sExtraArg.pfnProgress); // to make cppcheck happy
5322 :
5323 555 : const GIntBig nTotalBlocks =
5324 555 : static_cast<GIntBig>(DIV_ROUND_UP(nYSize, nSwathLines)) *
5325 555 : DIV_ROUND_UP(nXSize, nSwathCols);
5326 555 : GIntBig nBlocksDone = 0;
5327 :
5328 1328 : for (int iY = 0; iY < nYSize && eErr == CE_None; iY += nSwathLines)
5329 : {
5330 773 : int nThisLines = nSwathLines;
5331 :
5332 773 : if (iY + nThisLines > nYSize)
5333 194 : nThisLines = nYSize - iY;
5334 :
5335 1551 : for (int iX = 0; iX < nXSize && eErr == CE_None; iX += nSwathCols)
5336 : {
5337 778 : int nThisCols = nSwathCols;
5338 :
5339 778 : if (iX + nThisCols > nXSize)
5340 3 : nThisCols = nXSize - iX;
5341 :
5342 778 : int nStatus = GDAL_DATA_COVERAGE_STATUS_DATA;
5343 778 : if (bCheckHoles)
5344 : {
5345 547 : nStatus = 0;
5346 600 : for (int iBand = 0; iBand < nBandCount; iBand++)
5347 : {
5348 581 : nStatus |= poSrcDS->GetRasterBand(iBand + 1)
5349 581 : ->GetDataCoverageStatus(
5350 : iX, iY, nThisCols, nThisLines,
5351 : GDAL_DATA_COVERAGE_STATUS_DATA);
5352 581 : if (nStatus & GDAL_DATA_COVERAGE_STATUS_DATA)
5353 528 : break;
5354 : }
5355 : }
5356 778 : if (nStatus & GDAL_DATA_COVERAGE_STATUS_DATA)
5357 : {
5358 759 : sExtraArg.pfnProgress = GDALScaledProgress;
5359 1518 : sExtraArg.pProgressData = GDALCreateScaledProgress(
5360 759 : nBlocksDone / static_cast<double>(nTotalBlocks),
5361 759 : (nBlocksDone + 0.5) / static_cast<double>(nTotalBlocks),
5362 : pfnProgress, pProgressData);
5363 759 : if (sExtraArg.pProgressData == nullptr)
5364 346 : sExtraArg.pfnProgress = nullptr;
5365 :
5366 759 : eErr = poSrcDS->RasterIO(GF_Read, iX, iY, nThisCols,
5367 : nThisLines, pSwathBuf, nThisCols,
5368 : nThisLines, eDT, nBandCount,
5369 : nullptr, 0, 0, 0, &sExtraArg);
5370 :
5371 759 : GDALDestroyScaledProgress(sExtraArg.pProgressData);
5372 :
5373 759 : if (eErr == CE_None)
5374 758 : eErr = poDstDS->RasterIO(
5375 : GF_Write, iX, iY, nThisCols, nThisLines, pSwathBuf,
5376 : nThisCols, nThisLines, eDT, nBandCount, nullptr, 0,
5377 : 0, 0, nullptr);
5378 : }
5379 :
5380 778 : nBlocksDone++;
5381 1552 : if (eErr == CE_None &&
5382 774 : !pfnProgress(nBlocksDone /
5383 774 : static_cast<double>(nTotalBlocks),
5384 : nullptr, pProgressData))
5385 : {
5386 1 : eErr = CE_Failure;
5387 1 : CPLError(CE_Failure, CPLE_UserInterrupt,
5388 : "User terminated CreateCopy()");
5389 : }
5390 : }
5391 : }
5392 : }
5393 :
5394 : /* -------------------------------------------------------------------- */
5395 : /* Cleanup */
5396 : /* -------------------------------------------------------------------- */
5397 3237 : CPLFree(pSwathBuf);
5398 :
5399 3237 : return eErr;
5400 : }
5401 :
5402 : /************************************************************************/
5403 : /* GDALRasterBandCopyWholeRaster() */
5404 : /************************************************************************/
5405 :
5406 : /**
5407 : * \brief Copy a whole raster band
5408 : *
5409 : * This function copies the complete raster contents of one band to
5410 : * another similarly configured band. The source and destination
5411 : * bands must have the same width and height. The bands do not have
5412 : * to have the same data type.
5413 : *
5414 : * It implements efficient copying, in particular "chunking" the copy in
5415 : * substantial blocks.
5416 : *
5417 : * Currently the only papszOptions value supported are :
5418 : * <ul>
5419 : * <li>"COMPRESSED=YES" to force alignment on target dataset block sizes to
5420 : * achieve best compression.</li>
5421 : * <li>"SKIP_HOLES=YES" to skip chunks for which GDALGetDataCoverageStatus()
5422 : * returns GDAL_DATA_COVERAGE_STATUS_EMPTY (GDAL >= 2.2)</li>
5423 : * </ul>
5424 : *
5425 : * @param hSrcBand the source band
5426 : * @param hDstBand the destination band
5427 : * @param papszOptions transfer hints in "StringList" Name=Value format.
5428 : * @param pfnProgress progress reporting function.
5429 : * @param pProgressData callback data for progress function.
5430 : *
5431 : * @return CE_None on success, or CE_Failure on failure.
5432 : */
5433 :
5434 29 : CPLErr CPL_STDCALL GDALRasterBandCopyWholeRaster(
5435 : GDALRasterBandH hSrcBand, GDALRasterBandH hDstBand,
5436 : const char *const *const papszOptions, GDALProgressFunc pfnProgress,
5437 : void *pProgressData)
5438 :
5439 : {
5440 29 : VALIDATE_POINTER1(hSrcBand, "GDALRasterBandCopyWholeRaster", CE_Failure);
5441 29 : VALIDATE_POINTER1(hDstBand, "GDALRasterBandCopyWholeRaster", CE_Failure);
5442 :
5443 29 : GDALRasterBand *poSrcBand = GDALRasterBand::FromHandle(hSrcBand);
5444 29 : GDALRasterBand *poDstBand = GDALRasterBand::FromHandle(hDstBand);
5445 29 : CPLErr eErr = CE_None;
5446 :
5447 29 : if (pfnProgress == nullptr)
5448 2 : pfnProgress = GDALDummyProgress;
5449 :
5450 : /* -------------------------------------------------------------------- */
5451 : /* Confirm the datasets match in size and band counts. */
5452 : /* -------------------------------------------------------------------- */
5453 29 : int nXSize = poSrcBand->GetXSize();
5454 29 : int nYSize = poSrcBand->GetYSize();
5455 :
5456 29 : if (poDstBand->GetXSize() != nXSize || poDstBand->GetYSize() != nYSize)
5457 : {
5458 0 : CPLError(CE_Failure, CPLE_AppDefined,
5459 : "Input and output band sizes do not\n"
5460 : "match in GDALRasterBandCopyWholeRaster()");
5461 0 : return CE_Failure;
5462 : }
5463 :
5464 : /* -------------------------------------------------------------------- */
5465 : /* Report preliminary (0) progress. */
5466 : /* -------------------------------------------------------------------- */
5467 29 : if (!pfnProgress(0.0, nullptr, pProgressData))
5468 : {
5469 0 : CPLError(CE_Failure, CPLE_UserInterrupt,
5470 : "User terminated CreateCopy()");
5471 0 : return CE_Failure;
5472 : }
5473 :
5474 29 : GDALDataType eDT = poDstBand->GetRasterDataType();
5475 :
5476 : // If the destination is compressed, we must try to write blocks just once,
5477 : // to save disk space (GTiff case for example), and to avoid data loss
5478 : // (JPEG compression for example).
5479 29 : bool bDstIsCompressed = false;
5480 : const char *pszDstCompressed =
5481 29 : CSLFetchNameValue(const_cast<char **>(papszOptions), "COMPRESSED");
5482 29 : if (pszDstCompressed != nullptr && CPLTestBool(pszDstCompressed))
5483 26 : bDstIsCompressed = true;
5484 :
5485 : /* -------------------------------------------------------------------- */
5486 : /* What will our swath size be? */
5487 : /* -------------------------------------------------------------------- */
5488 :
5489 29 : int nSwathCols = 0;
5490 29 : int nSwathLines = 0;
5491 29 : GDALCopyWholeRasterGetSwathSize(poSrcBand, poDstBand, 1, bDstIsCompressed,
5492 : FALSE, &nSwathCols, &nSwathLines);
5493 :
5494 29 : const int nPixelSize = GDALGetDataTypeSizeBytes(eDT);
5495 :
5496 29 : void *pSwathBuf = VSI_MALLOC3_VERBOSE(nSwathCols, nSwathLines, nPixelSize);
5497 29 : if (pSwathBuf == nullptr)
5498 : {
5499 0 : return CE_Failure;
5500 : }
5501 :
5502 29 : CPLDebug("GDAL", "GDALRasterBandCopyWholeRaster(): %d*%d swaths",
5503 : nSwathCols, nSwathLines);
5504 :
5505 : const bool bCheckHoles =
5506 29 : CPLTestBool(CSLFetchNameValueDef(papszOptions, "SKIP_HOLES", "NO"));
5507 :
5508 : // Advise the source raster that we are going to read it completely
5509 29 : poSrcBand->AdviseRead(0, 0, nXSize, nYSize, nXSize, nYSize, eDT, nullptr);
5510 :
5511 : /* ==================================================================== */
5512 : /* Band oriented (uninterleaved) case. */
5513 : /* ==================================================================== */
5514 :
5515 72 : for (int iY = 0; iY < nYSize && eErr == CE_None; iY += nSwathLines)
5516 : {
5517 43 : int nThisLines = nSwathLines;
5518 :
5519 43 : if (iY + nThisLines > nYSize)
5520 8 : nThisLines = nYSize - iY;
5521 :
5522 86 : for (int iX = 0; iX < nXSize && eErr == CE_None; iX += nSwathCols)
5523 : {
5524 43 : int nThisCols = nSwathCols;
5525 :
5526 43 : if (iX + nThisCols > nXSize)
5527 0 : nThisCols = nXSize - iX;
5528 :
5529 43 : int nStatus = GDAL_DATA_COVERAGE_STATUS_DATA;
5530 43 : if (bCheckHoles)
5531 : {
5532 0 : nStatus = poSrcBand->GetDataCoverageStatus(
5533 : iX, iY, nThisCols, nThisLines,
5534 : GDAL_DATA_COVERAGE_STATUS_DATA);
5535 : }
5536 43 : if (nStatus & GDAL_DATA_COVERAGE_STATUS_DATA)
5537 : {
5538 43 : eErr = poSrcBand->RasterIO(GF_Read, iX, iY, nThisCols,
5539 : nThisLines, pSwathBuf, nThisCols,
5540 : nThisLines, eDT, 0, 0, nullptr);
5541 :
5542 43 : if (eErr == CE_None)
5543 43 : eErr = poDstBand->RasterIO(GF_Write, iX, iY, nThisCols,
5544 : nThisLines, pSwathBuf, nThisCols,
5545 : nThisLines, eDT, 0, 0, nullptr);
5546 : }
5547 :
5548 86 : if (eErr == CE_None && !pfnProgress(double(iY + nThisLines) /
5549 43 : static_cast<double>(nYSize),
5550 : nullptr, pProgressData))
5551 : {
5552 0 : eErr = CE_Failure;
5553 0 : CPLError(CE_Failure, CPLE_UserInterrupt,
5554 : "User terminated CreateCopy()");
5555 : }
5556 : }
5557 : }
5558 :
5559 : /* -------------------------------------------------------------------- */
5560 : /* Cleanup */
5561 : /* -------------------------------------------------------------------- */
5562 29 : CPLFree(pSwathBuf);
5563 :
5564 29 : return eErr;
5565 : }
5566 :
5567 : /************************************************************************/
5568 : /* GDALCopyRasterIOExtraArg () */
5569 : /************************************************************************/
5570 :
5571 527171 : void GDALCopyRasterIOExtraArg(GDALRasterIOExtraArg *psDestArg,
5572 : GDALRasterIOExtraArg *psSrcArg)
5573 : {
5574 527171 : INIT_RASTERIO_EXTRA_ARG(*psDestArg);
5575 527171 : if (psSrcArg)
5576 : {
5577 527171 : psDestArg->eResampleAlg = psSrcArg->eResampleAlg;
5578 527171 : psDestArg->pfnProgress = psSrcArg->pfnProgress;
5579 527171 : psDestArg->pProgressData = psSrcArg->pProgressData;
5580 527171 : psDestArg->bFloatingPointWindowValidity =
5581 527171 : psSrcArg->bFloatingPointWindowValidity;
5582 527171 : if (psSrcArg->bFloatingPointWindowValidity)
5583 : {
5584 204370 : psDestArg->dfXOff = psSrcArg->dfXOff;
5585 204370 : psDestArg->dfYOff = psSrcArg->dfYOff;
5586 204370 : psDestArg->dfXSize = psSrcArg->dfXSize;
5587 204370 : psDestArg->dfYSize = psSrcArg->dfYSize;
5588 : }
5589 527171 : if (psSrcArg->nVersion >= 2)
5590 : {
5591 527171 : psDestArg->bUseOnlyThisScale = psSrcArg->bUseOnlyThisScale;
5592 : }
5593 : }
5594 527171 : }
5595 :
5596 : /************************************************************************/
5597 : /* HasOnlyNoData() */
5598 : /************************************************************************/
5599 :
5600 25108002 : template <class T> static inline bool IsEqualToNoData(T value, T noDataValue)
5601 : {
5602 25108002 : return value == noDataValue;
5603 : }
5604 :
5605 0 : template <> bool IsEqualToNoData<GFloat16>(GFloat16 value, GFloat16 noDataValue)
5606 : {
5607 : using std::isnan;
5608 0 : return isnan(noDataValue) ? isnan(value) : value == noDataValue;
5609 : }
5610 :
5611 625506 : template <> bool IsEqualToNoData<float>(float value, float noDataValue)
5612 : {
5613 625506 : return std::isnan(noDataValue) ? std::isnan(value) : value == noDataValue;
5614 : }
5615 :
5616 13546900 : template <> bool IsEqualToNoData<double>(double value, double noDataValue)
5617 : {
5618 13546900 : return std::isnan(noDataValue) ? std::isnan(value) : value == noDataValue;
5619 : }
5620 :
5621 : template <class T>
5622 15894 : static bool HasOnlyNoDataT(const T *pBuffer, T noDataValue, size_t nWidth,
5623 : size_t nHeight, size_t nLineStride,
5624 : size_t nComponents)
5625 : {
5626 : // Fast test: check the 4 corners and the middle pixel.
5627 30885 : for (size_t iBand = 0; iBand < nComponents; iBand++)
5628 : {
5629 32537 : if (!(IsEqualToNoData(pBuffer[iBand], noDataValue) &&
5630 16181 : IsEqualToNoData(pBuffer[(nWidth - 1) * nComponents + iBand],
5631 15957 : noDataValue) &&
5632 15957 : IsEqualToNoData(
5633 15957 : pBuffer[((nHeight - 1) / 2 * nLineStride + (nWidth - 1) / 2) *
5634 15957 : nComponents +
5635 : iBand],
5636 15004 : noDataValue) &&
5637 15004 : IsEqualToNoData(
5638 15004 : pBuffer[(nHeight - 1) * nLineStride * nComponents + iBand],
5639 : noDataValue) &&
5640 14996 : IsEqualToNoData(
5641 14996 : pBuffer[((nHeight - 1) * nLineStride + nWidth - 1) *
5642 14996 : nComponents +
5643 : iBand],
5644 : noDataValue)))
5645 : {
5646 1365 : return false;
5647 : }
5648 : }
5649 :
5650 : // Test all pixels.
5651 46061 : for (size_t iY = 0; iY < nHeight; iY++)
5652 : {
5653 31590 : const T *pBufferLine = pBuffer + iY * nLineStride * nComponents;
5654 39233392 : for (size_t iX = 0; iX < nWidth * nComponents; iX++)
5655 : {
5656 39201946 : if (!IsEqualToNoData(pBufferLine[iX], noDataValue))
5657 : {
5658 58 : return false;
5659 : }
5660 : }
5661 : }
5662 14471 : return true;
5663 : }
5664 :
5665 : /************************************************************************/
5666 : /* GDALBufferHasOnlyNoData() */
5667 : /************************************************************************/
5668 :
5669 42608 : bool GDALBufferHasOnlyNoData(const void *pBuffer, double dfNoDataValue,
5670 : size_t nWidth, size_t nHeight, size_t nLineStride,
5671 : size_t nComponents, int nBitsPerSample,
5672 : GDALBufferSampleFormat nSampleFormat)
5673 : {
5674 : // In the case where the nodata is 0, we can compare several bytes at
5675 : // once. Select the largest natural integer type for the architecture.
5676 : #if SIZEOF_VOIDP >= 8 || defined(__x86_64__)
5677 : // We test __x86_64__ for x32 arch where SIZEOF_VOIDP == 4
5678 : typedef std::uint64_t WordType;
5679 : #else
5680 : typedef std::uint32_t WordType;
5681 : #endif
5682 42608 : if (dfNoDataValue == 0.0 && nWidth == nLineStride &&
5683 : // Do not use this optimized code path for floating point numbers,
5684 : // as it can't detect negative zero.
5685 : nSampleFormat != GSF_FLOATING_POINT)
5686 : {
5687 26708 : const GByte *pabyBuffer = static_cast<const GByte *>(pBuffer);
5688 26708 : const size_t nSize =
5689 26708 : (nWidth * nHeight * nComponents * nBitsPerSample + 7) / 8;
5690 26708 : size_t i = 0;
5691 : const size_t nInitialIters =
5692 53416 : std::min(sizeof(WordType) -
5693 26708 : static_cast<size_t>(
5694 : reinterpret_cast<std::uintptr_t>(pabyBuffer) %
5695 : sizeof(WordType)),
5696 26708 : nSize);
5697 220229 : for (; i < nInitialIters; i++)
5698 : {
5699 197907 : if (pabyBuffer[i])
5700 4386 : return false;
5701 : }
5702 16495900 : for (; i + sizeof(WordType) - 1 < nSize; i += sizeof(WordType))
5703 : {
5704 16480800 : if (*(reinterpret_cast<const WordType *>(pabyBuffer + i)))
5705 7193 : return false;
5706 : }
5707 52518 : for (; i < nSize; i++)
5708 : {
5709 37394 : if (pabyBuffer[i])
5710 5 : return false;
5711 : }
5712 15124 : return true;
5713 : }
5714 :
5715 15900 : if (nBitsPerSample == 8 && nSampleFormat == GSF_UNSIGNED_INT)
5716 : {
5717 22272 : return GDALIsValueInRange<uint8_t>(dfNoDataValue) &&
5718 11136 : HasOnlyNoDataT(static_cast<const uint8_t *>(pBuffer),
5719 11136 : static_cast<uint8_t>(dfNoDataValue), nWidth,
5720 11136 : nHeight, nLineStride, nComponents);
5721 : }
5722 4764 : if (nBitsPerSample == 8 && nSampleFormat == GSF_SIGNED_INT)
5723 : {
5724 : // Use unsigned implementation by converting the nodatavalue to
5725 : // unsigned
5726 63 : return GDALIsValueInRange<int8_t>(dfNoDataValue) &&
5727 31 : HasOnlyNoDataT(
5728 : static_cast<const uint8_t *>(pBuffer),
5729 31 : static_cast<uint8_t>(static_cast<int8_t>(dfNoDataValue)),
5730 32 : nWidth, nHeight, nLineStride, nComponents);
5731 : }
5732 4732 : if (nBitsPerSample == 16 && nSampleFormat == GSF_UNSIGNED_INT)
5733 : {
5734 23 : return GDALIsValueInRange<uint16_t>(dfNoDataValue) &&
5735 11 : HasOnlyNoDataT(static_cast<const uint16_t *>(pBuffer),
5736 11 : static_cast<uint16_t>(dfNoDataValue), nWidth,
5737 12 : nHeight, nLineStride, nComponents);
5738 : }
5739 4720 : if (nBitsPerSample == 16 && nSampleFormat == GSF_SIGNED_INT)
5740 : {
5741 : // Use unsigned implementation by converting the nodatavalue to
5742 : // unsigned
5743 99 : return GDALIsValueInRange<int16_t>(dfNoDataValue) &&
5744 49 : HasOnlyNoDataT(
5745 : static_cast<const uint16_t *>(pBuffer),
5746 49 : static_cast<uint16_t>(static_cast<int16_t>(dfNoDataValue)),
5747 50 : nWidth, nHeight, nLineStride, nComponents);
5748 : }
5749 4670 : if (nBitsPerSample == 32 && nSampleFormat == GSF_UNSIGNED_INT)
5750 : {
5751 73 : return GDALIsValueInRange<uint32_t>(dfNoDataValue) &&
5752 36 : HasOnlyNoDataT(static_cast<const uint32_t *>(pBuffer),
5753 : static_cast<uint32_t>(dfNoDataValue), nWidth,
5754 37 : nHeight, nLineStride, nComponents);
5755 : }
5756 4633 : if (nBitsPerSample == 32 && nSampleFormat == GSF_SIGNED_INT)
5757 : {
5758 : // Use unsigned implementation by converting the nodatavalue to
5759 : // unsigned
5760 23 : return GDALIsValueInRange<int32_t>(dfNoDataValue) &&
5761 11 : HasOnlyNoDataT(
5762 : static_cast<const uint32_t *>(pBuffer),
5763 11 : static_cast<uint32_t>(static_cast<int32_t>(dfNoDataValue)),
5764 12 : nWidth, nHeight, nLineStride, nComponents);
5765 : }
5766 4621 : if (nBitsPerSample == 64 && nSampleFormat == GSF_UNSIGNED_INT)
5767 : {
5768 56 : return GDALIsValueInRange<uint64_t>(dfNoDataValue) &&
5769 28 : HasOnlyNoDataT(static_cast<const uint64_t *>(pBuffer),
5770 : static_cast<uint64_t>(dfNoDataValue), nWidth,
5771 28 : nHeight, nLineStride, nComponents);
5772 : }
5773 4593 : if (nBitsPerSample == 64 && nSampleFormat == GSF_SIGNED_INT)
5774 : {
5775 : // Use unsigned implementation by converting the nodatavalue to
5776 : // unsigned
5777 0 : return GDALIsValueInRange<int64_t>(dfNoDataValue) &&
5778 0 : HasOnlyNoDataT(
5779 : static_cast<const uint64_t *>(pBuffer),
5780 0 : static_cast<uint64_t>(static_cast<int64_t>(dfNoDataValue)),
5781 0 : nWidth, nHeight, nLineStride, nComponents);
5782 : }
5783 4593 : if (nBitsPerSample == 16 && nSampleFormat == GSF_FLOATING_POINT)
5784 : {
5785 0 : return (std::isnan(dfNoDataValue) ||
5786 0 : GDALIsValueInRange<GFloat16>(dfNoDataValue)) &&
5787 0 : HasOnlyNoDataT(static_cast<const GFloat16 *>(pBuffer),
5788 : static_cast<GFloat16>(dfNoDataValue), nWidth,
5789 0 : nHeight, nLineStride, nComponents);
5790 : }
5791 4593 : if (nBitsPerSample == 32 && nSampleFormat == GSF_FLOATING_POINT)
5792 : {
5793 758 : return (std::isnan(dfNoDataValue) ||
5794 1515 : GDALIsValueInRange<float>(dfNoDataValue)) &&
5795 757 : HasOnlyNoDataT(static_cast<const float *>(pBuffer),
5796 : static_cast<float>(dfNoDataValue), nWidth,
5797 758 : nHeight, nLineStride, nComponents);
5798 : }
5799 3835 : if (nBitsPerSample == 64 && nSampleFormat == GSF_FLOATING_POINT)
5800 : {
5801 3835 : return HasOnlyNoDataT(static_cast<const double *>(pBuffer),
5802 : dfNoDataValue, nWidth, nHeight, nLineStride,
5803 3835 : nComponents);
5804 : }
5805 0 : return false;
5806 : }
5807 :
5808 : #ifdef HAVE_SSE2
5809 :
5810 : /************************************************************************/
5811 : /* GDALDeinterleave3Byte() */
5812 : /************************************************************************/
5813 :
5814 : #if defined(__GNUC__) && !defined(__clang__)
5815 : __attribute__((optimize("no-tree-vectorize")))
5816 : #endif
5817 : static void
5818 322342 : GDALDeinterleave3Byte(const GByte *CPL_RESTRICT pabySrc,
5819 : GByte *CPL_RESTRICT pabyDest0,
5820 : GByte *CPL_RESTRICT pabyDest1,
5821 : GByte *CPL_RESTRICT pabyDest2, size_t nIters)
5822 : #ifdef USE_NEON_OPTIMIZATIONS
5823 : {
5824 : return GDALDeinterleave3Byte_SSSE3(pabySrc, pabyDest0, pabyDest1, pabyDest2,
5825 : nIters);
5826 : }
5827 : #else
5828 : {
5829 : #ifdef HAVE_SSSE3_AT_COMPILE_TIME
5830 322342 : if (CPLHaveRuntimeSSSE3())
5831 : {
5832 322364 : return GDALDeinterleave3Byte_SSSE3(pabySrc, pabyDest0, pabyDest1,
5833 322354 : pabyDest2, nIters);
5834 : }
5835 : #endif
5836 :
5837 2 : size_t i = 0;
5838 2 : if (((reinterpret_cast<uintptr_t>(pabySrc) |
5839 2 : reinterpret_cast<uintptr_t>(pabyDest0) |
5840 2 : reinterpret_cast<uintptr_t>(pabyDest1) |
5841 2 : reinterpret_cast<uintptr_t>(pabyDest2)) %
5842 : sizeof(unsigned int)) == 0)
5843 : {
5844 : // Slightly better than GCC autovectorizer
5845 17 : for (size_t j = 0; i + 3 < nIters; i += 4, ++j)
5846 : {
5847 15 : unsigned int word0 =
5848 15 : *reinterpret_cast<const unsigned int *>(pabySrc + 3 * i);
5849 15 : unsigned int word1 =
5850 15 : *reinterpret_cast<const unsigned int *>(pabySrc + 3 * i + 4);
5851 15 : unsigned int word2 =
5852 15 : *reinterpret_cast<const unsigned int *>(pabySrc + 3 * i + 8);
5853 15 : reinterpret_cast<unsigned int *>(pabyDest0)[j] =
5854 15 : (word0 & 0xff) | ((word0 >> 24) << 8) | (word1 & 0x00ff0000) |
5855 15 : ((word2 >> 8) << 24);
5856 15 : reinterpret_cast<unsigned int *>(pabyDest1)[j] =
5857 15 : ((word0 >> 8) & 0xff) | ((word1 & 0xff) << 8) |
5858 15 : (((word1 >> 24)) << 16) | ((word2 >> 16) << 24);
5859 15 : pabyDest2[j * 4] = static_cast<GByte>(word0 >> 16);
5860 15 : pabyDest2[j * 4 + 1] = static_cast<GByte>(word1 >> 8);
5861 15 : pabyDest2[j * 4 + 2] = static_cast<GByte>(word2);
5862 15 : pabyDest2[j * 4 + 3] = static_cast<GByte>(word2 >> 24);
5863 : }
5864 : }
5865 : #if defined(__clang__)
5866 : #pragma clang loop vectorize(disable)
5867 : #endif
5868 3 : for (; i < nIters; ++i)
5869 : {
5870 1 : pabyDest0[i] = pabySrc[3 * i + 0];
5871 1 : pabyDest1[i] = pabySrc[3 * i + 1];
5872 1 : pabyDest2[i] = pabySrc[3 * i + 2];
5873 : }
5874 : }
5875 : #endif
5876 :
5877 : /************************************************************************/
5878 : /* GDALDeinterleave4Byte() */
5879 : /************************************************************************/
5880 :
5881 : #if !defined(__GNUC__) || defined(__clang__)
5882 :
5883 : /************************************************************************/
5884 : /* deinterleave() */
5885 : /************************************************************************/
5886 :
5887 : template <bool SHIFT, bool MASK>
5888 : inline __m128i deinterleave(__m128i &xmm0_ori, __m128i &xmm1_ori,
5889 : __m128i &xmm2_ori, __m128i &xmm3_ori)
5890 : {
5891 : // Set higher 24bit of each int32 packed word to 0
5892 : if (SHIFT)
5893 : {
5894 : xmm0_ori = _mm_srli_epi32(xmm0_ori, 8);
5895 : xmm1_ori = _mm_srli_epi32(xmm1_ori, 8);
5896 : xmm2_ori = _mm_srli_epi32(xmm2_ori, 8);
5897 : xmm3_ori = _mm_srli_epi32(xmm3_ori, 8);
5898 : }
5899 : __m128i xmm0;
5900 : __m128i xmm1;
5901 : __m128i xmm2;
5902 : __m128i xmm3;
5903 : if (MASK)
5904 : {
5905 : const __m128i xmm_mask = _mm_set1_epi32(0xff);
5906 : xmm0 = _mm_and_si128(xmm0_ori, xmm_mask);
5907 : xmm1 = _mm_and_si128(xmm1_ori, xmm_mask);
5908 : xmm2 = _mm_and_si128(xmm2_ori, xmm_mask);
5909 : xmm3 = _mm_and_si128(xmm3_ori, xmm_mask);
5910 : }
5911 : else
5912 : {
5913 : xmm0 = xmm0_ori;
5914 : xmm1 = xmm1_ori;
5915 : xmm2 = xmm2_ori;
5916 : xmm3 = xmm3_ori;
5917 : }
5918 : // Pack int32 to int16
5919 : xmm0 = _mm_packs_epi32(xmm0, xmm1);
5920 : xmm2 = _mm_packs_epi32(xmm2, xmm3);
5921 : // Pack int16 to uint8
5922 : xmm0 = _mm_packus_epi16(xmm0, xmm2);
5923 : return xmm0;
5924 : }
5925 :
5926 : static void GDALDeinterleave4Byte(const GByte *CPL_RESTRICT pabySrc,
5927 : GByte *CPL_RESTRICT pabyDest0,
5928 : GByte *CPL_RESTRICT pabyDest1,
5929 : GByte *CPL_RESTRICT pabyDest2,
5930 : GByte *CPL_RESTRICT pabyDest3, size_t nIters)
5931 : #ifdef USE_NEON_OPTIMIZATIONS
5932 : {
5933 : return GDALDeinterleave4Byte_SSSE3(pabySrc, pabyDest0, pabyDest1, pabyDest2,
5934 : pabyDest3, nIters);
5935 : }
5936 : #else
5937 : {
5938 : #ifdef HAVE_SSSE3_AT_COMPILE_TIME
5939 : if (CPLHaveRuntimeSSSE3())
5940 : {
5941 : return GDALDeinterleave4Byte_SSSE3(pabySrc, pabyDest0, pabyDest1,
5942 : pabyDest2, pabyDest3, nIters);
5943 : }
5944 : #endif
5945 :
5946 : // Not the optimal SSE2-only code, as gcc auto-vectorizer manages to
5947 : // do something slightly better.
5948 : size_t i = 0;
5949 : for (; i + 15 < nIters; i += 16)
5950 : {
5951 : __m128i xmm0_ori = _mm_loadu_si128(
5952 : reinterpret_cast<__m128i const *>(pabySrc + 4 * i + 0));
5953 : __m128i xmm1_ori = _mm_loadu_si128(
5954 : reinterpret_cast<__m128i const *>(pabySrc + 4 * i + 16));
5955 : __m128i xmm2_ori = _mm_loadu_si128(
5956 : reinterpret_cast<__m128i const *>(pabySrc + 4 * i + 32));
5957 : __m128i xmm3_ori = _mm_loadu_si128(
5958 : reinterpret_cast<__m128i const *>(pabySrc + 4 * i + 48));
5959 :
5960 : _mm_storeu_si128(
5961 : reinterpret_cast<__m128i *>(pabyDest0 + i),
5962 : deinterleave<false, true>(xmm0_ori, xmm1_ori, xmm2_ori, xmm3_ori));
5963 : _mm_storeu_si128(
5964 : reinterpret_cast<__m128i *>(pabyDest1 + i),
5965 : deinterleave<true, true>(xmm0_ori, xmm1_ori, xmm2_ori, xmm3_ori));
5966 : _mm_storeu_si128(
5967 : reinterpret_cast<__m128i *>(pabyDest2 + i),
5968 : deinterleave<true, true>(xmm0_ori, xmm1_ori, xmm2_ori, xmm3_ori));
5969 : _mm_storeu_si128(
5970 : reinterpret_cast<__m128i *>(pabyDest3 + i),
5971 : deinterleave<true, false>(xmm0_ori, xmm1_ori, xmm2_ori, xmm3_ori));
5972 : }
5973 :
5974 : #if defined(__clang__)
5975 : #pragma clang loop vectorize(disable)
5976 : #endif
5977 : for (; i < nIters; ++i)
5978 : {
5979 : pabyDest0[i] = pabySrc[4 * i + 0];
5980 : pabyDest1[i] = pabySrc[4 * i + 1];
5981 : pabyDest2[i] = pabySrc[4 * i + 2];
5982 : pabyDest3[i] = pabySrc[4 * i + 3];
5983 : }
5984 : }
5985 : #endif
5986 : #else
5987 : // GCC autovectorizer does an excellent job
5988 62366 : __attribute__((optimize("tree-vectorize"))) static void GDALDeinterleave4Byte(
5989 : const GByte *CPL_RESTRICT pabySrc, GByte *CPL_RESTRICT pabyDest0,
5990 : GByte *CPL_RESTRICT pabyDest1, GByte *CPL_RESTRICT pabyDest2,
5991 : GByte *CPL_RESTRICT pabyDest3, size_t nIters)
5992 : {
5993 528825000 : for (size_t i = 0; i < nIters; ++i)
5994 : {
5995 528763000 : pabyDest0[i] = pabySrc[4 * i + 0];
5996 528763000 : pabyDest1[i] = pabySrc[4 * i + 1];
5997 528763000 : pabyDest2[i] = pabySrc[4 * i + 2];
5998 528763000 : pabyDest3[i] = pabySrc[4 * i + 3];
5999 : }
6000 62366 : }
6001 : #endif
6002 :
6003 : #else
6004 :
6005 : /************************************************************************/
6006 : /* GDALDeinterleave3Byte() */
6007 : /************************************************************************/
6008 :
6009 : // TODO: Enabling below could help on non-Intel architectures where GCC knows
6010 : // how to auto-vectorize
6011 : // #if defined(__GNUC__)
6012 : //__attribute__((optimize("tree-vectorize")))
6013 : // #endif
6014 : static void GDALDeinterleave3Byte(const GByte *CPL_RESTRICT pabySrc,
6015 : GByte *CPL_RESTRICT pabyDest0,
6016 : GByte *CPL_RESTRICT pabyDest1,
6017 : GByte *CPL_RESTRICT pabyDest2, size_t nIters)
6018 : {
6019 : for (size_t i = 0; i < nIters; ++i)
6020 : {
6021 : pabyDest0[i] = pabySrc[3 * i + 0];
6022 : pabyDest1[i] = pabySrc[3 * i + 1];
6023 : pabyDest2[i] = pabySrc[3 * i + 2];
6024 : }
6025 : }
6026 :
6027 : /************************************************************************/
6028 : /* GDALDeinterleave4Byte() */
6029 : /************************************************************************/
6030 :
6031 : // TODO: Enabling below could help on non-Intel architectures where gcc knows
6032 : // how to auto-vectorize
6033 : // #if defined(__GNUC__)
6034 : //__attribute__((optimize("tree-vectorize")))
6035 : // #endif
6036 : static void GDALDeinterleave4Byte(const GByte *CPL_RESTRICT pabySrc,
6037 : GByte *CPL_RESTRICT pabyDest0,
6038 : GByte *CPL_RESTRICT pabyDest1,
6039 : GByte *CPL_RESTRICT pabyDest2,
6040 : GByte *CPL_RESTRICT pabyDest3, size_t nIters)
6041 : {
6042 : for (size_t i = 0; i < nIters; ++i)
6043 : {
6044 : pabyDest0[i] = pabySrc[4 * i + 0];
6045 : pabyDest1[i] = pabySrc[4 * i + 1];
6046 : pabyDest2[i] = pabySrc[4 * i + 2];
6047 : pabyDest3[i] = pabySrc[4 * i + 3];
6048 : }
6049 : }
6050 :
6051 : #endif
6052 :
6053 : /************************************************************************/
6054 : /* GDALDeinterleave() */
6055 : /************************************************************************/
6056 :
6057 : /*! Copy values from a pixel-interleave buffer to multiple per-component
6058 : buffers.
6059 :
6060 : In pseudo-code
6061 : \verbatim
6062 : for(size_t i = 0; i < nIters; ++i)
6063 : for(int iComp = 0; iComp < nComponents; iComp++ )
6064 : ppDestBuffer[iComp][i] = pSourceBuffer[nComponents * i + iComp]
6065 : \endverbatim
6066 :
6067 : The implementation is optimized for a few cases, like de-interleaving
6068 : of 3 or 4-components Byte buffers.
6069 :
6070 : \since GDAL 3.6
6071 : */
6072 385065 : void GDALDeinterleave(const void *pSourceBuffer, GDALDataType eSourceDT,
6073 : int nComponents, void **ppDestBuffer,
6074 : GDALDataType eDestDT, size_t nIters)
6075 : {
6076 385065 : if (eSourceDT == eDestDT)
6077 : {
6078 385042 : if (eSourceDT == GDT_Byte || eSourceDT == GDT_Int8)
6079 : {
6080 384721 : if (nComponents == 3)
6081 : {
6082 322321 : const GByte *CPL_RESTRICT pabySrc =
6083 : static_cast<const GByte *>(pSourceBuffer);
6084 322321 : GByte *CPL_RESTRICT pabyDest0 =
6085 : static_cast<GByte *>(ppDestBuffer[0]);
6086 322321 : GByte *CPL_RESTRICT pabyDest1 =
6087 : static_cast<GByte *>(ppDestBuffer[1]);
6088 322321 : GByte *CPL_RESTRICT pabyDest2 =
6089 : static_cast<GByte *>(ppDestBuffer[2]);
6090 322321 : GDALDeinterleave3Byte(pabySrc, pabyDest0, pabyDest1, pabyDest2,
6091 : nIters);
6092 322363 : return;
6093 : }
6094 62400 : else if (nComponents == 4)
6095 : {
6096 62366 : const GByte *CPL_RESTRICT pabySrc =
6097 : static_cast<const GByte *>(pSourceBuffer);
6098 62366 : GByte *CPL_RESTRICT pabyDest0 =
6099 : static_cast<GByte *>(ppDestBuffer[0]);
6100 62366 : GByte *CPL_RESTRICT pabyDest1 =
6101 : static_cast<GByte *>(ppDestBuffer[1]);
6102 62366 : GByte *CPL_RESTRICT pabyDest2 =
6103 : static_cast<GByte *>(ppDestBuffer[2]);
6104 62366 : GByte *CPL_RESTRICT pabyDest3 =
6105 : static_cast<GByte *>(ppDestBuffer[3]);
6106 62366 : GDALDeinterleave4Byte(pabySrc, pabyDest0, pabyDest1, pabyDest2,
6107 : pabyDest3, nIters);
6108 62364 : return;
6109 34 : }
6110 : }
6111 : #if ((defined(__GNUC__) && !defined(__clang__)) || \
6112 : defined(__INTEL_CLANG_COMPILER)) && \
6113 : defined(HAVE_SSE2) && defined(HAVE_SSSE3_AT_COMPILE_TIME)
6114 642 : else if ((eSourceDT == GDT_Int16 || eSourceDT == GDT_UInt16) &&
6115 321 : CPLHaveRuntimeSSSE3())
6116 : {
6117 321 : if (nComponents == 3)
6118 : {
6119 126 : const GUInt16 *CPL_RESTRICT panSrc =
6120 : static_cast<const GUInt16 *>(pSourceBuffer);
6121 126 : GUInt16 *CPL_RESTRICT panDest0 =
6122 : static_cast<GUInt16 *>(ppDestBuffer[0]);
6123 126 : GUInt16 *CPL_RESTRICT panDest1 =
6124 : static_cast<GUInt16 *>(ppDestBuffer[1]);
6125 126 : GUInt16 *CPL_RESTRICT panDest2 =
6126 : static_cast<GUInt16 *>(ppDestBuffer[2]);
6127 126 : GDALDeinterleave3UInt16_SSSE3(panSrc, panDest0, panDest1,
6128 : panDest2, nIters);
6129 126 : return;
6130 : }
6131 : #if !defined(__INTEL_CLANG_COMPILER)
6132 : // ICC autovectorizer doesn't do a good job, at least with icx
6133 : // 2022.1.0.20220316
6134 195 : else if (nComponents == 4)
6135 : {
6136 195 : const GUInt16 *CPL_RESTRICT panSrc =
6137 : static_cast<const GUInt16 *>(pSourceBuffer);
6138 195 : GUInt16 *CPL_RESTRICT panDest0 =
6139 : static_cast<GUInt16 *>(ppDestBuffer[0]);
6140 195 : GUInt16 *CPL_RESTRICT panDest1 =
6141 : static_cast<GUInt16 *>(ppDestBuffer[1]);
6142 195 : GUInt16 *CPL_RESTRICT panDest2 =
6143 : static_cast<GUInt16 *>(ppDestBuffer[2]);
6144 195 : GUInt16 *CPL_RESTRICT panDest3 =
6145 : static_cast<GUInt16 *>(ppDestBuffer[3]);
6146 195 : GDALDeinterleave4UInt16_SSSE3(panSrc, panDest0, panDest1,
6147 : panDest2, panDest3, nIters);
6148 195 : return;
6149 : }
6150 : #endif
6151 : }
6152 : #endif
6153 : }
6154 :
6155 57 : const int nSourceDTSize = GDALGetDataTypeSizeBytes(eSourceDT);
6156 29 : const int nDestDTSize = GDALGetDataTypeSizeBytes(eDestDT);
6157 108 : for (int iComp = 0; iComp < nComponents; iComp++)
6158 : {
6159 79 : GDALCopyWords64(static_cast<const GByte *>(pSourceBuffer) +
6160 79 : iComp * nSourceDTSize,
6161 : eSourceDT, nComponents * nSourceDTSize,
6162 79 : ppDestBuffer[iComp], eDestDT, nDestDTSize, nIters);
6163 : }
6164 : }
6165 :
6166 : /************************************************************************/
6167 : /* GDALTranspose2DSingleToSingle() */
6168 : /************************************************************************/
6169 : /**
6170 : * Transpose a 2D array of non-complex values, in a efficient (cache-oblivious) way.
6171 : *
6172 : * @param pSrc Source array of height = nSrcHeight and width = nSrcWidth.
6173 : * @param pDst Destination transposed array of height = nSrcWidth and width = nSrcHeight.
6174 : * @param nSrcWidth Width of pSrc array.
6175 : * @param nSrcHeight Height of pSrc array.
6176 : */
6177 :
6178 : template <class DST, class SRC>
6179 158 : void GDALTranspose2DSingleToSingle(const SRC *CPL_RESTRICT pSrc,
6180 : DST *CPL_RESTRICT pDst, size_t nSrcWidth,
6181 : size_t nSrcHeight)
6182 : {
6183 158 : constexpr size_t blocksize = 32;
6184 341 : for (size_t i = 0; i < nSrcHeight; i += blocksize)
6185 : {
6186 183 : const size_t max_k = std::min(i + blocksize, nSrcHeight);
6187 4976 : for (size_t j = 0; j < nSrcWidth; j += blocksize)
6188 : {
6189 : // transpose the block beginning at [i,j]
6190 4793 : const size_t max_l = std::min(j + blocksize, nSrcWidth);
6191 25387 : for (size_t k = i; k < max_k; ++k)
6192 : {
6193 644522 : for (size_t l = j; l < max_l; ++l)
6194 : {
6195 623928 : GDALCopyWord(pSrc[l + k * nSrcWidth],
6196 623928 : pDst[k + l * nSrcHeight]);
6197 : }
6198 : }
6199 : }
6200 : }
6201 158 : }
6202 :
6203 : /************************************************************************/
6204 : /* GDALTranspose2DComplexToComplex() */
6205 : /************************************************************************/
6206 : /**
6207 : * Transpose a 2D array of complex values into an array of complex values,
6208 : * in a efficient (cache-oblivious) way.
6209 : *
6210 : * @param pSrc Source array of height = nSrcHeight and width = nSrcWidth.
6211 : * @param pDst Destination transposed array of height = nSrcWidth and width = nSrcHeight.
6212 : * @param nSrcWidth Width of pSrc array.
6213 : * @param nSrcHeight Height of pSrc array.
6214 : */
6215 : template <class DST, class SRC>
6216 25 : void GDALTranspose2DComplexToComplex(const SRC *CPL_RESTRICT pSrc,
6217 : DST *CPL_RESTRICT pDst, size_t nSrcWidth,
6218 : size_t nSrcHeight)
6219 : {
6220 25 : constexpr size_t blocksize = 32;
6221 50 : for (size_t i = 0; i < nSrcHeight; i += blocksize)
6222 : {
6223 25 : const size_t max_k = std::min(i + blocksize, nSrcHeight);
6224 50 : for (size_t j = 0; j < nSrcWidth; j += blocksize)
6225 : {
6226 : // transpose the block beginning at [i,j]
6227 25 : const size_t max_l = std::min(j + blocksize, nSrcWidth);
6228 75 : for (size_t k = i; k < max_k; ++k)
6229 : {
6230 200 : for (size_t l = j; l < max_l; ++l)
6231 : {
6232 150 : GDALCopyWord(pSrc[2 * (l + k * nSrcWidth) + 0],
6233 150 : pDst[2 * (k + l * nSrcHeight) + 0]);
6234 150 : GDALCopyWord(pSrc[2 * (l + k * nSrcWidth) + 1],
6235 150 : pDst[2 * (k + l * nSrcHeight) + 1]);
6236 : }
6237 : }
6238 : }
6239 : }
6240 25 : }
6241 :
6242 : /************************************************************************/
6243 : /* GDALTranspose2DComplexToSingle() */
6244 : /************************************************************************/
6245 : /**
6246 : * Transpose a 2D array of complex values into an array of non-complex values,
6247 : * in a efficient (cache-oblivious) way.
6248 : *
6249 : * @param pSrc Source array of height = nSrcHeight and width = nSrcWidth.
6250 : * @param pDst Destination transposed array of height = nSrcWidth and width = nSrcHeight.
6251 : * @param nSrcWidth Width of pSrc array.
6252 : * @param nSrcHeight Height of pSrc array.
6253 : */
6254 : template <class DST, class SRC>
6255 55 : void GDALTranspose2DComplexToSingle(const SRC *CPL_RESTRICT pSrc,
6256 : DST *CPL_RESTRICT pDst, size_t nSrcWidth,
6257 : size_t nSrcHeight)
6258 : {
6259 55 : constexpr size_t blocksize = 32;
6260 110 : for (size_t i = 0; i < nSrcHeight; i += blocksize)
6261 : {
6262 55 : const size_t max_k = std::min(i + blocksize, nSrcHeight);
6263 110 : for (size_t j = 0; j < nSrcWidth; j += blocksize)
6264 : {
6265 : // transpose the block beginning at [i,j]
6266 55 : const size_t max_l = std::min(j + blocksize, nSrcWidth);
6267 165 : for (size_t k = i; k < max_k; ++k)
6268 : {
6269 440 : for (size_t l = j; l < max_l; ++l)
6270 : {
6271 330 : GDALCopyWord(pSrc[2 * (l + k * nSrcWidth) + 0],
6272 330 : pDst[k + l * nSrcHeight]);
6273 : }
6274 : }
6275 : }
6276 : }
6277 55 : }
6278 :
6279 : /************************************************************************/
6280 : /* GDALTranspose2DSingleToComplex() */
6281 : /************************************************************************/
6282 : /**
6283 : * Transpose a 2D array of non-complex values into an array of complex values,
6284 : * in a efficient (cache-oblivious) way.
6285 : *
6286 : * @param pSrc Source array of height = nSrcHeight and width = nSrcWidth.
6287 : * @param pDst Destination transposed array of height = nSrcWidth and width = nSrcHeight.
6288 : * @param nSrcWidth Width of pSrc array.
6289 : * @param nSrcHeight Height of pSrc array.
6290 : */
6291 : template <class DST, class SRC>
6292 55 : void GDALTranspose2DSingleToComplex(const SRC *CPL_RESTRICT pSrc,
6293 : DST *CPL_RESTRICT pDst, size_t nSrcWidth,
6294 : size_t nSrcHeight)
6295 : {
6296 55 : constexpr size_t blocksize = 32;
6297 110 : for (size_t i = 0; i < nSrcHeight; i += blocksize)
6298 : {
6299 55 : const size_t max_k = std::min(i + blocksize, nSrcHeight);
6300 110 : for (size_t j = 0; j < nSrcWidth; j += blocksize)
6301 : {
6302 : // transpose the block beginning at [i,j]
6303 55 : const size_t max_l = std::min(j + blocksize, nSrcWidth);
6304 165 : for (size_t k = i; k < max_k; ++k)
6305 : {
6306 440 : for (size_t l = j; l < max_l; ++l)
6307 : {
6308 330 : GDALCopyWord(pSrc[l + k * nSrcWidth],
6309 330 : pDst[2 * (k + l * nSrcHeight) + 0]);
6310 330 : pDst[2 * (k + l * nSrcHeight) + 1] = 0;
6311 : }
6312 : }
6313 : }
6314 : }
6315 55 : }
6316 :
6317 : /************************************************************************/
6318 : /* GDALTranspose2D() */
6319 : /************************************************************************/
6320 :
6321 : template <class DST, bool DST_IS_COMPLEX>
6322 293 : static void GDALTranspose2D(const void *pSrc, GDALDataType eSrcType, DST *pDst,
6323 : size_t nSrcWidth, size_t nSrcHeight)
6324 : {
6325 : #define CALL_GDALTranspose2D_internal(SRC_TYPE) \
6326 : do \
6327 : { \
6328 : if constexpr (DST_IS_COMPLEX) \
6329 : { \
6330 : GDALTranspose2DSingleToComplex( \
6331 : static_cast<const SRC_TYPE *>(pSrc), pDst, nSrcWidth, \
6332 : nSrcHeight); \
6333 : } \
6334 : else \
6335 : { \
6336 : GDALTranspose2DSingleToSingle(static_cast<const SRC_TYPE *>(pSrc), \
6337 : pDst, nSrcWidth, nSrcHeight); \
6338 : } \
6339 : } while (0)
6340 :
6341 : #define CALL_GDALTranspose2DComplex_internal(SRC_TYPE) \
6342 : do \
6343 : { \
6344 : if constexpr (DST_IS_COMPLEX) \
6345 : { \
6346 : GDALTranspose2DComplexToComplex( \
6347 : static_cast<const SRC_TYPE *>(pSrc), pDst, nSrcWidth, \
6348 : nSrcHeight); \
6349 : } \
6350 : else \
6351 : { \
6352 : GDALTranspose2DComplexToSingle( \
6353 : static_cast<const SRC_TYPE *>(pSrc), pDst, nSrcWidth, \
6354 : nSrcHeight); \
6355 : } \
6356 : } while (0)
6357 :
6358 : // clang-format off
6359 293 : switch (eSrcType)
6360 : {
6361 16 : case GDT_Byte: CALL_GDALTranspose2D_internal(uint8_t); break;
6362 15 : case GDT_Int8: CALL_GDALTranspose2D_internal(int8_t); break;
6363 33 : case GDT_UInt16: CALL_GDALTranspose2D_internal(uint16_t); break;
6364 20 : case GDT_Int16: CALL_GDALTranspose2D_internal(int16_t); break;
6365 24 : case GDT_UInt32: CALL_GDALTranspose2D_internal(uint32_t); break;
6366 16 : case GDT_Int32: CALL_GDALTranspose2D_internal(int32_t); break;
6367 16 : case GDT_UInt64: CALL_GDALTranspose2D_internal(uint64_t); break;
6368 16 : case GDT_Int64: CALL_GDALTranspose2D_internal(int64_t); break;
6369 16 : case GDT_Float16: CALL_GDALTranspose2D_internal(GFloat16); break;
6370 17 : case GDT_Float32: CALL_GDALTranspose2D_internal(float); break;
6371 24 : case GDT_Float64: CALL_GDALTranspose2D_internal(double); break;
6372 16 : case GDT_CInt16: CALL_GDALTranspose2DComplex_internal(int16_t); break;
6373 16 : case GDT_CInt32: CALL_GDALTranspose2DComplex_internal(int32_t); break;
6374 16 : case GDT_CFloat16: CALL_GDALTranspose2DComplex_internal(GFloat16); break;
6375 16 : case GDT_CFloat32: CALL_GDALTranspose2DComplex_internal(float); break;
6376 16 : case GDT_CFloat64: CALL_GDALTranspose2DComplex_internal(double); break;
6377 0 : case GDT_Unknown:
6378 : case GDT_TypeCount:
6379 0 : break;
6380 : }
6381 : // clang-format on
6382 :
6383 : #undef CALL_GDALTranspose2D_internal
6384 : #undef CALL_GDALTranspose2DComplex_internal
6385 293 : }
6386 :
6387 : /************************************************************************/
6388 : /* GDALInterleave2Byte() */
6389 : /************************************************************************/
6390 :
6391 : #if defined(HAVE_SSE2) && \
6392 : (!defined(__GNUC__) || defined(__INTEL_CLANG_COMPILER))
6393 :
6394 : // ICC autovectorizer doesn't do a good job at generating good SSE code,
6395 : // at least with icx 2024.0.2.20231213, but it nicely unrolls the below loop.
6396 : #if defined(__GNUC__)
6397 : __attribute__((noinline))
6398 : #endif
6399 : static void
6400 : GDALInterleave2Byte(const uint8_t *CPL_RESTRICT pSrc,
6401 : uint8_t *CPL_RESTRICT pDst, size_t nIters)
6402 : {
6403 : size_t i = 0;
6404 : constexpr size_t VALS_PER_ITER = 16;
6405 : for (i = 0; i + VALS_PER_ITER <= nIters; i += VALS_PER_ITER)
6406 : {
6407 : __m128i xmm0 =
6408 : _mm_loadu_si128(reinterpret_cast<__m128i const *>(pSrc + i));
6409 : __m128i xmm1 = _mm_loadu_si128(
6410 : reinterpret_cast<__m128i const *>(pSrc + i + nIters));
6411 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pDst + 2 * i),
6412 : _mm_unpacklo_epi8(xmm0, xmm1));
6413 : _mm_storeu_si128(
6414 : reinterpret_cast<__m128i *>(pDst + 2 * i + VALS_PER_ITER),
6415 : _mm_unpackhi_epi8(xmm0, xmm1));
6416 : }
6417 : #if defined(__clang__)
6418 : #pragma clang loop vectorize(disable)
6419 : #endif
6420 : for (; i < nIters; ++i)
6421 : {
6422 : pDst[2 * i + 0] = pSrc[i + 0 * nIters];
6423 : pDst[2 * i + 1] = pSrc[i + 1 * nIters];
6424 : }
6425 : }
6426 :
6427 : #else
6428 :
6429 : #if defined(__GNUC__) && !defined(__clang__)
6430 : __attribute__((optimize("tree-vectorize")))
6431 : #endif
6432 : #if defined(__GNUC__)
6433 : __attribute__((noinline))
6434 : #endif
6435 : #if defined(__clang__) && !defined(__INTEL_CLANG_COMPILER)
6436 : // clang++ -O2 -fsanitize=undefined fails to vectorize, ignore that warning
6437 : #pragma clang diagnostic push
6438 : #pragma clang diagnostic ignored "-Wpass-failed"
6439 : #endif
6440 : static void
6441 9 : GDALInterleave2Byte(const uint8_t *CPL_RESTRICT pSrc,
6442 : uint8_t *CPL_RESTRICT pDst, size_t nIters)
6443 : {
6444 : #if defined(__clang__) && !defined(__INTEL_CLANG_COMPILER)
6445 : #pragma clang loop vectorize(enable)
6446 : #endif
6447 355429 : for (size_t i = 0; i < nIters; ++i)
6448 : {
6449 355420 : pDst[2 * i + 0] = pSrc[i + 0 * nIters];
6450 355420 : pDst[2 * i + 1] = pSrc[i + 1 * nIters];
6451 : }
6452 9 : }
6453 : #if defined(__clang__) && !defined(__INTEL_CLANG_COMPILER)
6454 : #pragma clang diagnostic pop
6455 : #endif
6456 :
6457 : #endif
6458 :
6459 : /************************************************************************/
6460 : /* GDALInterleave4Byte() */
6461 : /************************************************************************/
6462 :
6463 : #if defined(HAVE_SSE2) && \
6464 : (!defined(__GNUC__) || defined(__INTEL_CLANG_COMPILER))
6465 :
6466 : // ICC autovectorizer doesn't do a good job at generating good SSE code,
6467 : // at least with icx 2024.0.2.20231213, but it nicely unrolls the below loop.
6468 : #if defined(__GNUC__)
6469 : __attribute__((noinline))
6470 : #endif
6471 : static void
6472 : GDALInterleave4Byte(const uint8_t *CPL_RESTRICT pSrc,
6473 : uint8_t *CPL_RESTRICT pDst, size_t nIters)
6474 : {
6475 : size_t i = 0;
6476 : constexpr size_t VALS_PER_ITER = 16;
6477 : for (i = 0; i + VALS_PER_ITER <= nIters; i += VALS_PER_ITER)
6478 : {
6479 : __m128i xmm0 = _mm_loadu_si128(
6480 : reinterpret_cast<__m128i const *>(pSrc + i + 0 * nIters));
6481 : __m128i xmm1 = _mm_loadu_si128(
6482 : reinterpret_cast<__m128i const *>(pSrc + i + 1 * nIters));
6483 : __m128i xmm2 = _mm_loadu_si128(
6484 : reinterpret_cast<__m128i const *>(pSrc + i + 2 * nIters));
6485 : __m128i xmm3 = _mm_loadu_si128(
6486 : reinterpret_cast<__m128i const *>(pSrc + i + 3 * nIters));
6487 : auto tmp0 = _mm_unpacklo_epi8(
6488 : xmm0,
6489 : xmm1); // (xmm0_0, xmm1_0, xmm0_1, xmm1_1, xmm0_2, xmm1_2, ...)
6490 : auto tmp1 = _mm_unpackhi_epi8(
6491 : xmm0,
6492 : xmm1); // (xmm0_8, xmm1_8, xmm0_9, xmm1_9, xmm0_10, xmm1_10, ...)
6493 : auto tmp2 = _mm_unpacklo_epi8(
6494 : xmm2,
6495 : xmm3); // (xmm2_0, xmm3_0, xmm2_1, xmm3_1, xmm2_2, xmm3_2, ...)
6496 : auto tmp3 = _mm_unpackhi_epi8(
6497 : xmm2,
6498 : xmm3); // (xmm2_8, xmm3_8, xmm2_9, xmm3_9, xmm2_10, xmm3_10, ...)
6499 : auto tmp2_0 = _mm_unpacklo_epi16(
6500 : tmp0,
6501 : tmp2); // (xmm0_0, xmm1_0, xmm2_0, xmm3_0, xmm0_1, xmm1_1, xmm2_1, xmm3_1, ...)
6502 : auto tmp2_1 = _mm_unpackhi_epi16(tmp0, tmp2);
6503 : auto tmp2_2 = _mm_unpacklo_epi16(tmp1, tmp3);
6504 : auto tmp2_3 = _mm_unpackhi_epi16(tmp1, tmp3);
6505 : _mm_storeu_si128(
6506 : reinterpret_cast<__m128i *>(pDst + 4 * i + 0 * VALS_PER_ITER),
6507 : tmp2_0);
6508 : _mm_storeu_si128(
6509 : reinterpret_cast<__m128i *>(pDst + 4 * i + 1 * VALS_PER_ITER),
6510 : tmp2_1);
6511 : _mm_storeu_si128(
6512 : reinterpret_cast<__m128i *>(pDst + 4 * i + 2 * VALS_PER_ITER),
6513 : tmp2_2);
6514 : _mm_storeu_si128(
6515 : reinterpret_cast<__m128i *>(pDst + 4 * i + 3 * VALS_PER_ITER),
6516 : tmp2_3);
6517 : }
6518 : #if defined(__clang__)
6519 : #pragma clang loop vectorize(disable)
6520 : #endif
6521 : for (; i < nIters; ++i)
6522 : {
6523 : pDst[4 * i + 0] = pSrc[i + 0 * nIters];
6524 : pDst[4 * i + 1] = pSrc[i + 1 * nIters];
6525 : pDst[4 * i + 2] = pSrc[i + 2 * nIters];
6526 : pDst[4 * i + 3] = pSrc[i + 3 * nIters];
6527 : }
6528 : }
6529 :
6530 : #else
6531 :
6532 : #if defined(__GNUC__) && !defined(__clang__)
6533 : __attribute__((optimize("tree-vectorize")))
6534 : #endif
6535 : #if defined(__GNUC__)
6536 : __attribute__((noinline))
6537 : #endif
6538 : #if defined(__clang__) && !defined(__INTEL_CLANG_COMPILER)
6539 : // clang++ -O2 -fsanitize=undefined fails to vectorize, ignore that warning
6540 : #pragma clang diagnostic push
6541 : #pragma clang diagnostic ignored "-Wpass-failed"
6542 : #endif
6543 : static void
6544 9 : GDALInterleave4Byte(const uint8_t *CPL_RESTRICT pSrc,
6545 : uint8_t *CPL_RESTRICT pDst, size_t nIters)
6546 : {
6547 : #if defined(__clang__) && !defined(__INTEL_CLANG_COMPILER)
6548 : #pragma clang loop vectorize(enable)
6549 : #endif
6550 75443 : for (size_t i = 0; i < nIters; ++i)
6551 : {
6552 75434 : pDst[4 * i + 0] = pSrc[i + 0 * nIters];
6553 75434 : pDst[4 * i + 1] = pSrc[i + 1 * nIters];
6554 75434 : pDst[4 * i + 2] = pSrc[i + 2 * nIters];
6555 75434 : pDst[4 * i + 3] = pSrc[i + 3 * nIters];
6556 : }
6557 9 : }
6558 : #if defined(__clang__) && !defined(__INTEL_CLANG_COMPILER)
6559 : #pragma clang diagnostic pop
6560 : #endif
6561 :
6562 : #endif
6563 :
6564 : /************************************************************************/
6565 : /* GDALTranspose2D() */
6566 : /************************************************************************/
6567 :
6568 : /**
6569 : * Transpose a 2D array in a efficient (cache-oblivious) way.
6570 : *
6571 : * @param pSrc Source array of width = nSrcWidth and height = nSrcHeight.
6572 : * @param eSrcType Data type of pSrc.
6573 : * @param pDst Destination transposed array of width = nSrcHeight and height = nSrcWidth.
6574 : * @param eDstType Data type of pDst.
6575 : * @param nSrcWidth Width of pSrc array.
6576 : * @param nSrcHeight Height of pSrc array.
6577 : * @since GDAL 3.11
6578 : */
6579 :
6580 344 : void GDALTranspose2D(const void *pSrc, GDALDataType eSrcType, void *pDst,
6581 : GDALDataType eDstType, size_t nSrcWidth, size_t nSrcHeight)
6582 : {
6583 344 : if (eSrcType == eDstType && (eSrcType == GDT_Byte || eSrcType == GDT_Int8))
6584 : {
6585 51 : if (nSrcHeight == 2)
6586 : {
6587 9 : GDALInterleave2Byte(static_cast<const uint8_t *>(pSrc),
6588 : static_cast<uint8_t *>(pDst), nSrcWidth);
6589 9 : return;
6590 : }
6591 42 : if (nSrcHeight == 4)
6592 : {
6593 9 : GDALInterleave4Byte(static_cast<const uint8_t *>(pSrc),
6594 : static_cast<uint8_t *>(pDst), nSrcWidth);
6595 9 : return;
6596 : }
6597 : #if (defined(HAVE_SSSE3_AT_COMPILE_TIME) && \
6598 : (defined(__x86_64) || defined(_M_X64)))
6599 33 : if (CPLHaveRuntimeSSSE3())
6600 : {
6601 33 : GDALTranspose2D_Byte_SSSE3(static_cast<const uint8_t *>(pSrc),
6602 : static_cast<uint8_t *>(pDst), nSrcWidth,
6603 : nSrcHeight);
6604 33 : return;
6605 : }
6606 : #elif defined(USE_NEON_OPTIMIZATIONS)
6607 : {
6608 : GDALTranspose2D_Byte_SSSE3(static_cast<const uint8_t *>(pSrc),
6609 : static_cast<uint8_t *>(pDst), nSrcWidth,
6610 : nSrcHeight);
6611 : return;
6612 : }
6613 : #endif
6614 : }
6615 :
6616 : #define CALL_GDALTranspose2D_internal(DST_TYPE, DST_IS_COMPLEX) \
6617 : GDALTranspose2D<DST_TYPE, DST_IS_COMPLEX>( \
6618 : pSrc, eSrcType, static_cast<DST_TYPE *>(pDst), nSrcWidth, nSrcHeight)
6619 :
6620 : // clang-format off
6621 293 : switch (eDstType)
6622 : {
6623 15 : case GDT_Byte: CALL_GDALTranspose2D_internal(uint8_t, false); break;
6624 15 : case GDT_Int8: CALL_GDALTranspose2D_internal(int8_t, false); break;
6625 33 : case GDT_UInt16: CALL_GDALTranspose2D_internal(uint16_t, false); break;
6626 20 : case GDT_Int16: CALL_GDALTranspose2D_internal(int16_t, false); break;
6627 24 : case GDT_UInt32: CALL_GDALTranspose2D_internal(uint32_t, false); break;
6628 16 : case GDT_Int32: CALL_GDALTranspose2D_internal(int32_t, false); break;
6629 16 : case GDT_UInt64: CALL_GDALTranspose2D_internal(uint64_t, false); break;
6630 16 : case GDT_Int64: CALL_GDALTranspose2D_internal(int64_t, false); break;
6631 16 : case GDT_Float16: CALL_GDALTranspose2D_internal(GFloat16, false); break;
6632 17 : case GDT_Float32: CALL_GDALTranspose2D_internal(float, false); break;
6633 25 : case GDT_Float64: CALL_GDALTranspose2D_internal(double, false); break;
6634 16 : case GDT_CInt16: CALL_GDALTranspose2D_internal(int16_t, true); break;
6635 16 : case GDT_CInt32: CALL_GDALTranspose2D_internal(int32_t, true); break;
6636 16 : case GDT_CFloat16: CALL_GDALTranspose2D_internal(GFloat16, true); break;
6637 16 : case GDT_CFloat32: CALL_GDALTranspose2D_internal(float, true); break;
6638 16 : case GDT_CFloat64: CALL_GDALTranspose2D_internal(double, true); break;
6639 0 : case GDT_Unknown:
6640 : case GDT_TypeCount:
6641 0 : break;
6642 : }
6643 : // clang-format on
6644 :
6645 : #undef CALL_GDALTranspose2D_internal
6646 : }
6647 :
6648 : /************************************************************************/
6649 : /* ExtractBitAndConvertTo255() */
6650 : /************************************************************************/
6651 :
6652 : #if defined(__GNUC__) || defined(_MSC_VER)
6653 : // Signedness of char implementation dependent, so be explicit.
6654 : // Assumes 2-complement integer types and sign extension of right shifting
6655 : // GCC guarantees such:
6656 : // https://gcc.gnu.org/onlinedocs/gcc/Integers-implementation.html#Integers-implementation
6657 124890 : static inline GByte ExtractBitAndConvertTo255(GByte byVal, int nBit)
6658 : {
6659 124890 : return static_cast<GByte>(static_cast<signed char>(byVal << (7 - nBit)) >>
6660 124890 : 7);
6661 : }
6662 : #else
6663 : // Portable way
6664 : static inline GByte ExtractBitAndConvertTo255(GByte byVal, int nBit)
6665 : {
6666 : return (byVal & (1 << nBit)) ? 255 : 0;
6667 : }
6668 : #endif
6669 :
6670 : /************************************************************************/
6671 : /* ExpandEightPackedBitsToByteAt255() */
6672 : /************************************************************************/
6673 :
6674 15569 : static inline void ExpandEightPackedBitsToByteAt255(GByte byVal,
6675 : GByte abyOutput[8])
6676 : {
6677 15569 : abyOutput[0] = ExtractBitAndConvertTo255(byVal, 7);
6678 15569 : abyOutput[1] = ExtractBitAndConvertTo255(byVal, 6);
6679 15569 : abyOutput[2] = ExtractBitAndConvertTo255(byVal, 5);
6680 15569 : abyOutput[3] = ExtractBitAndConvertTo255(byVal, 4);
6681 15569 : abyOutput[4] = ExtractBitAndConvertTo255(byVal, 3);
6682 15569 : abyOutput[5] = ExtractBitAndConvertTo255(byVal, 2);
6683 15569 : abyOutput[6] = ExtractBitAndConvertTo255(byVal, 1);
6684 15569 : abyOutput[7] = ExtractBitAndConvertTo255(byVal, 0);
6685 15569 : }
6686 :
6687 : /************************************************************************/
6688 : /* GDALExpandPackedBitsToByteAt0Or255() */
6689 : /************************************************************************/
6690 :
6691 : /** Expand packed-bits (ordered from most-significant bit to least one)
6692 : into a byte each, where a bit at 0 is expanded to a byte at 0, and a bit
6693 : at 1 to a byte at 255.
6694 :
6695 : The function does (in a possibly more optimized way) the following:
6696 : \code{.cpp}
6697 : for (size_t i = 0; i < nInputBits; ++i )
6698 : {
6699 : pabyOutput[i] = (pabyInput[i / 8] & (1 << (7 - (i % 8)))) ? 255 : 0;
6700 : }
6701 : \endcode
6702 :
6703 : @param pabyInput Input array of (nInputBits + 7) / 8 bytes.
6704 : @param pabyOutput Output array of nInputBits bytes.
6705 : @param nInputBits Number of valid bits in pabyInput.
6706 :
6707 : @since 3.11
6708 : */
6709 :
6710 45145 : void GDALExpandPackedBitsToByteAt0Or255(const GByte *CPL_RESTRICT pabyInput,
6711 : GByte *CPL_RESTRICT pabyOutput,
6712 : size_t nInputBits)
6713 : {
6714 45145 : const size_t nInputWholeBytes = nInputBits / 8;
6715 45145 : size_t iByte = 0;
6716 :
6717 : #ifdef HAVE_SSE2
6718 : // Mask to isolate each bit
6719 45145 : const __m128i bit_mask = _mm_set_epi8(1, 2, 4, 8, 16, 32, 64, -128, 1, 2, 4,
6720 : 8, 16, 32, 64, -128);
6721 45145 : const __m128i zero = _mm_setzero_si128();
6722 45145 : const __m128i all_ones = _mm_set1_epi8(-1);
6723 : #ifdef __SSSE3__
6724 : const __m128i dispatch_two_bytes =
6725 : _mm_set_epi8(1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0);
6726 : #endif
6727 45145 : constexpr size_t SSE_REG_SIZE = sizeof(bit_mask);
6728 135654 : for (; iByte + SSE_REG_SIZE <= nInputWholeBytes; iByte += SSE_REG_SIZE)
6729 : {
6730 90509 : __m128i reg_ori = _mm_loadu_si128(
6731 90509 : reinterpret_cast<const __m128i *>(pabyInput + iByte));
6732 :
6733 90509 : constexpr int NUM_PROCESSED_BYTES_PER_REG = 2;
6734 814581 : for (size_t k = 0; k < SSE_REG_SIZE / NUM_PROCESSED_BYTES_PER_REG; ++k)
6735 : {
6736 : // Given reg_ori = (A, B, ... 14 other bytes ...),
6737 : // expand to (A, A, A, A, A, A, A, A, B, B, B, B, B, B, B, B)
6738 : #ifdef __SSSE3__
6739 : __m128i reg = _mm_shuffle_epi8(reg_ori, dispatch_two_bytes);
6740 : #else
6741 724072 : __m128i reg = _mm_unpacklo_epi8(reg_ori, reg_ori);
6742 724072 : reg = _mm_unpacklo_epi16(reg, reg);
6743 724072 : reg = _mm_unpacklo_epi32(reg, reg);
6744 : #endif
6745 :
6746 : // Test if bits of interest are set
6747 724072 : reg = _mm_and_si128(reg, bit_mask);
6748 :
6749 : // Now test if those bits are set, by comparing to zero. So the
6750 : // result will be that bytes where bits are set will be at 0, and
6751 : // ones where they are cleared will be at 0xFF. So the inverse of
6752 : // the end result we want!
6753 724072 : reg = _mm_cmpeq_epi8(reg, zero);
6754 :
6755 : // Invert the result
6756 724072 : reg = _mm_andnot_si128(reg, all_ones);
6757 :
6758 : _mm_storeu_si128(reinterpret_cast<__m128i *>(pabyOutput), reg);
6759 :
6760 724072 : pabyOutput += SSE_REG_SIZE;
6761 :
6762 : // Right-shift of 2 bytes
6763 724072 : reg_ori = _mm_bsrli_si128(reg_ori, NUM_PROCESSED_BYTES_PER_REG);
6764 : }
6765 : }
6766 :
6767 : #endif // HAVE_SSE2
6768 :
6769 60714 : for (; iByte < nInputWholeBytes; ++iByte)
6770 : {
6771 15569 : ExpandEightPackedBitsToByteAt255(pabyInput[iByte], pabyOutput);
6772 15569 : pabyOutput += 8;
6773 : }
6774 45483 : for (int iBit = 0; iBit < static_cast<int>(nInputBits % 8); ++iBit)
6775 : {
6776 338 : *pabyOutput = ExtractBitAndConvertTo255(pabyInput[iByte], 7 - iBit);
6777 338 : ++pabyOutput;
6778 : }
6779 45145 : }
6780 :
6781 : /************************************************************************/
6782 : /* ExpandEightPackedBitsToByteAt1() */
6783 : /************************************************************************/
6784 :
6785 136113 : static inline void ExpandEightPackedBitsToByteAt1(GByte byVal,
6786 : GByte abyOutput[8])
6787 : {
6788 136113 : abyOutput[0] = (byVal >> 7) & 0x1;
6789 136113 : abyOutput[1] = (byVal >> 6) & 0x1;
6790 136113 : abyOutput[2] = (byVal >> 5) & 0x1;
6791 136113 : abyOutput[3] = (byVal >> 4) & 0x1;
6792 136113 : abyOutput[4] = (byVal >> 3) & 0x1;
6793 136113 : abyOutput[5] = (byVal >> 2) & 0x1;
6794 136113 : abyOutput[6] = (byVal >> 1) & 0x1;
6795 136113 : abyOutput[7] = (byVal >> 0) & 0x1;
6796 136113 : }
6797 :
6798 : /************************************************************************/
6799 : /* GDALExpandPackedBitsToByteAt0Or1() */
6800 : /************************************************************************/
6801 :
6802 : /** Expand packed-bits (ordered from most-significant bit to least one)
6803 : into a byte each, where a bit at 0 is expanded to a byte at 0, and a bit
6804 : at 1 to a byte at 1.
6805 :
6806 : The function does (in a possibly more optimized way) the following:
6807 : \code{.cpp}
6808 : for (size_t i = 0; i < nInputBits; ++i )
6809 : {
6810 : pabyOutput[i] = (pabyInput[i / 8] & (1 << (7 - (i % 8)))) ? 1 : 0;
6811 : }
6812 : \endcode
6813 :
6814 : @param pabyInput Input array of (nInputBits + 7) / 8 bytes.
6815 : @param pabyOutput Output array of nInputBits bytes.
6816 : @param nInputBits Number of valid bits in pabyInput.
6817 :
6818 : @since 3.11
6819 : */
6820 :
6821 7041 : void GDALExpandPackedBitsToByteAt0Or1(const GByte *CPL_RESTRICT pabyInput,
6822 : GByte *CPL_RESTRICT pabyOutput,
6823 : size_t nInputBits)
6824 : {
6825 7041 : const size_t nInputWholeBytes = nInputBits / 8;
6826 7041 : size_t iByte = 0;
6827 143154 : for (; iByte < nInputWholeBytes; ++iByte)
6828 : {
6829 136113 : ExpandEightPackedBitsToByteAt1(pabyInput[iByte], pabyOutput);
6830 136113 : pabyOutput += 8;
6831 : }
6832 18902 : for (int iBit = 0; iBit < static_cast<int>(nInputBits % 8); ++iBit)
6833 : {
6834 11861 : *pabyOutput = (pabyInput[iByte] >> (7 - iBit)) & 0x1;
6835 11861 : ++pabyOutput;
6836 : }
6837 7041 : }
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