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gdalpansharpen.cpp
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/******************************************************************************
*
* Project: GDAL Pansharpening module
* Purpose: Implementation of pansharpening.
* Author: Even Rouault <even.rouault at spatialys.com>
*
******************************************************************************
* Copyright (c) 2015, Even Rouault <even.rouault at spatialys.com>
* Copyright (c) 2015, Airbus DS Geo SA (weighted Brovey algorithm)
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include "cpl_port.h"
#include "cpl_worker_thread_pool.h"
#include "gdalpansharpen.h"
#include <algorithm>
#include <array>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <limits>
#include <new>
#include "cpl_conv.h"
#include "cpl_error.h"
#include "cpl_multiproc.h"
#include "cpl_vsi.h"
#include "../frmts/mem/memdataset.h"
#include "../frmts/vrt/vrtdataset.h"
#include "gdal_priv.h"
#include "gdal_priv_templates.hpp"
// #include "gdalsse_priv.h"
// Limit types to practical use cases.
#define LIMIT_TYPES 1
/************************************************************************/
/* GDALCreatePansharpenOptions() */
/************************************************************************/
/** Create pansharpening options.
*
* @return a newly allocated pansharpening option structure that must be freed
* with GDALDestroyPansharpenOptions().
*
* @since GDAL 2.1
*/
GDALPansharpenOptions *GDALCreatePansharpenOptions()
{
GDALPansharpenOptions *psOptions = static_cast<GDALPansharpenOptions *>(
CPLCalloc(1, sizeof(GDALPansharpenOptions)));
psOptions->ePansharpenAlg = GDAL_PSH_WEIGHTED_BROVEY;
psOptions->eResampleAlg = GRIORA_Cubic;
return psOptions;
}
/************************************************************************/
/* GDALDestroyPansharpenOptions() */
/************************************************************************/
/** Destroy pansharpening options.
*
* @param psOptions a pansharpening option structure allocated with
* GDALCreatePansharpenOptions()
*
* @since GDAL 2.1
*/
void GDALDestroyPansharpenOptions(GDALPansharpenOptions *psOptions)
{
if (psOptions == nullptr)
return;
CPLFree(psOptions->padfWeights);
CPLFree(psOptions->pahInputSpectralBands);
CPLFree(psOptions->panOutPansharpenedBands);
CPLFree(psOptions);
}
/************************************************************************/
/* GDALClonePansharpenOptions() */
/************************************************************************/
/** Clone pansharpening options.
*
* @param psOptions a pansharpening option structure allocated with
* GDALCreatePansharpenOptions()
* @return a newly allocated pansharpening option structure that must be freed
* with GDALDestroyPansharpenOptions().
*
* @since GDAL 2.1
*/
GDALPansharpenOptions *
GDALClonePansharpenOptions(const GDALPansharpenOptions *psOptions)
{
GDALPansharpenOptions *psNewOptions = GDALCreatePansharpenOptions();
psNewOptions->ePansharpenAlg = psOptions->ePansharpenAlg;
psNewOptions->eResampleAlg = psOptions->eResampleAlg;
psNewOptions->nBitDepth = psOptions->nBitDepth;
psNewOptions->nWeightCount = psOptions->nWeightCount;
if (psOptions->padfWeights)
{
psNewOptions->padfWeights = static_cast<double *>(
CPLMalloc(sizeof(double) * psOptions->nWeightCount));
memcpy(psNewOptions->padfWeights, psOptions->padfWeights,
sizeof(double) * psOptions->nWeightCount);
}
psNewOptions->hPanchroBand = psOptions->hPanchroBand;
psNewOptions->nInputSpectralBands = psOptions->nInputSpectralBands;
if (psOptions->pahInputSpectralBands)
{
const size_t nSize =
sizeof(GDALRasterBandH) * psOptions->nInputSpectralBands;
psNewOptions->pahInputSpectralBands =
static_cast<GDALRasterBandH *>(CPLMalloc(nSize));
memcpy(psNewOptions->pahInputSpectralBands,
psOptions->pahInputSpectralBands, nSize);
}
psNewOptions->nOutPansharpenedBands = psOptions->nOutPansharpenedBands;
if (psOptions->panOutPansharpenedBands)
{
psNewOptions->panOutPansharpenedBands = static_cast<int *>(
CPLMalloc(sizeof(int) * psOptions->nOutPansharpenedBands));
memcpy(psNewOptions->panOutPansharpenedBands,
psOptions->panOutPansharpenedBands,
sizeof(int) * psOptions->nOutPansharpenedBands);
}
psNewOptions->bHasNoData = psOptions->bHasNoData;
psNewOptions->dfNoData = psOptions->dfNoData;
psNewOptions->nThreads = psOptions->nThreads;
return psNewOptions;
}
/************************************************************************/
/* GDALPansharpenOperation() */
/************************************************************************/
/** Pansharpening operation constructor.
*
* The object is ready to be used after Initialize() has been called.
*/
GDALPansharpenOperation::GDALPansharpenOperation() = default;
/************************************************************************/
/* ~GDALPansharpenOperation() */
/************************************************************************/
/** Pansharpening operation destructor.
*/
GDALPansharpenOperation::~GDALPansharpenOperation()
{
GDALDestroyPansharpenOptions(psOptions);
for (size_t i = 0; i < aVDS.size(); i++)
delete aVDS[i];
delete poThreadPool;
}
/************************************************************************/
/* Initialize() */
/************************************************************************/
/** Initialize the pansharpening operation.
*
* @param psOptionsIn pansharpening options. Must not be NULL.
*
* @return CE_None in case of success, CE_Failure in case of failure.
*/
CPLErr
GDALPansharpenOperation::Initialize(const GDALPansharpenOptions *psOptionsIn)
{
if (psOptionsIn->hPanchroBand == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined, "hPanchroBand not set");
return CE_Failure;
}
if (psOptionsIn->nInputSpectralBands <= 0)
{
CPLError(CE_Failure, CPLE_AppDefined,
"No input spectral bands defined");
return CE_Failure;
}
if (psOptionsIn->padfWeights == nullptr ||
psOptionsIn->nWeightCount != psOptionsIn->nInputSpectralBands)
{
CPLError(CE_Failure, CPLE_AppDefined,
"No weights defined, or not the same number as input "
"spectral bands");
return CE_Failure;
}
auto poPanchroBand = GDALRasterBand::FromHandle(psOptionsIn->hPanchroBand);
auto poPanchroDS = poPanchroBand->GetDataset();
if (poPanchroDS == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot retrieve dataset associated with hPanchroBand");
return CE_Failure;
}
// Make sure that the band is really a first level child of the owning dataset
if (poPanchroDS->GetRasterBand(poPanchroBand->GetBand()) != poPanchroBand)
{
CPLError(CE_Failure, CPLE_AppDefined,
"poPanchroDS->GetRasterBand(poPanchroBand->GetBand()) != "
"poPanchroBand");
return CE_Failure;
}
std::array<double, 6> adfPanchroGT;
if (poPanchroDS->GetGeoTransform(adfPanchroGT.data()) != CE_None)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Panchromatic band has no associated geotransform");
return CE_Failure;
}
GDALRasterBandH hRefBand = psOptionsIn->pahInputSpectralBands[0];
auto poRefBand = GDALRasterBand::FromHandle(hRefBand);
auto poRefBandDS = poRefBand->GetDataset();
if (poRefBandDS == nullptr)
{
CPLError(
CE_Failure, CPLE_AppDefined,
"Cannot retrieve dataset associated with ahInputSpectralBands[0]");
return CE_Failure;
}
// Make sure that the band is really a first level child of the owning dataset
if (poRefBandDS->GetRasterBand(poRefBand->GetBand()) != poRefBand)
{
CPLError(
CE_Failure, CPLE_AppDefined,
"poRefBandDS->GetRasterBand(poRefBand->GetBand()) != poRefBand");
return CE_Failure;
}
std::array<double, 6> adfRefMSGT;
if (poRefBandDS->GetGeoTransform(adfRefMSGT.data()) != CE_None)
{
CPLError(CE_Failure, CPLE_AppDefined,
"ahInputSpectralBands[0] band has no associated geotransform");
return CE_Failure;
}
std::array<double, 6> adfInvMSGT;
if (!GDALInvGeoTransform(adfRefMSGT.data(), adfInvMSGT.data()))
{
CPLError(CE_Failure, CPLE_AppDefined,
"ahInputSpectralBands[0] geotransform is not invertible");
return CE_Failure;
}
// Do InvMSGT * PanchroGT multiplication
m_adfPanToMSGT[1] =
adfInvMSGT[1] * adfPanchroGT[1] + adfInvMSGT[2] * adfPanchroGT[4];
m_adfPanToMSGT[2] =
adfInvMSGT[1] * adfPanchroGT[2] + adfInvMSGT[2] * adfPanchroGT[5];
m_adfPanToMSGT[0] = adfInvMSGT[1] * adfPanchroGT[0] +
adfInvMSGT[2] * adfPanchroGT[3] + adfInvMSGT[0];
m_adfPanToMSGT[4] =
adfInvMSGT[4] * adfPanchroGT[1] + adfInvMSGT[5] * adfPanchroGT[4];
m_adfPanToMSGT[5] =
adfInvMSGT[4] * adfPanchroGT[2] + adfInvMSGT[5] * adfPanchroGT[5];
m_adfPanToMSGT[3] = adfInvMSGT[4] * adfPanchroGT[0] +
adfInvMSGT[5] * adfPanchroGT[3] + adfInvMSGT[3];
#if 0
CPLDebug("GDAL", "m_adfPanToMSGT[] = %g %g %g %g %g %g",
m_adfPanToMSGT[0], m_adfPanToMSGT[1], m_adfPanToMSGT[2],
m_adfPanToMSGT[3], m_adfPanToMSGT[4], m_adfPanToMSGT[5]);
#endif
if (std::fabs(m_adfPanToMSGT[2]) > 1e-10 ||
std::fabs(m_adfPanToMSGT[4]) > 1e-10)
{
CPLError(CE_Failure, CPLE_NotSupported,
"Composition of panchromatic and multispectral geotransform "
"has rotational terms");
return CE_Failure;
}
bool bSameDataset = psOptionsIn->nInputSpectralBands > 1;
if (bSameDataset)
anInputBands.push_back(GDALGetBandNumber(hRefBand));
for (int i = 1; i < psOptionsIn->nInputSpectralBands; i++)
{
GDALRasterBandH hBand = psOptionsIn->pahInputSpectralBands[i];
if (GDALGetRasterBandXSize(hBand) != GDALGetRasterBandXSize(hRefBand) ||
GDALGetRasterBandYSize(hBand) != GDALGetRasterBandYSize(hRefBand))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Dimensions of input spectral band %d different from "
"first spectral band",
i + 1);
return CE_Failure;
}
auto poBand = GDALRasterBand::FromHandle(hBand);
auto poBandDS = poBand->GetDataset();
if (poBandDS == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot retrieve dataset associated with "
"input spectral band %d",
i + 1);
return CE_Failure;
}
// Make sure that the band is really a first level child of the owning dataset
if (poBandDS->GetRasterBand(poBand->GetBand()) != poBand)
{
CPLError(CE_Failure, CPLE_AppDefined,
"poBandDS->GetRasterBand(poBand->GetBand()) != poBand");
return CE_Failure;
}
std::array<double, 6> adfMSGT;
if (poBandDS->GetGeoTransform(adfMSGT.data()) != CE_None)
{
CPLError(
CE_Failure, CPLE_AppDefined,
"input spectral band %d band has no associated geotransform",
i + 1);
return CE_Failure;
}
if (adfMSGT != adfRefMSGT)
{
CPLError(CE_Failure, CPLE_AppDefined,
"input spectral band %d has a different "
"geotransform than the first spectral band",
i + 1);
return CE_Failure;
}
if (bSameDataset)
{
if (GDALGetBandDataset(hBand) != GDALGetBandDataset(hRefBand))
{
anInputBands.resize(0);
bSameDataset = false;
}
else
{
anInputBands.push_back(GDALGetBandNumber(hBand));
}
}
}
if (psOptionsIn->nOutPansharpenedBands == 0)
{
CPLError(CE_Warning, CPLE_AppDefined,
"No output pansharpened band defined");
}
for (int i = 0; i < psOptionsIn->nOutPansharpenedBands; i++)
{
if (psOptionsIn->panOutPansharpenedBands[i] < 0 ||
psOptionsIn->panOutPansharpenedBands[i] >=
psOptionsIn->nInputSpectralBands)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Invalid value panOutPansharpenedBands[%d] = %d", i,
psOptionsIn->panOutPansharpenedBands[i]);
return CE_Failure;
}
}
GDALDataType eWorkDataType = poPanchroBand->GetRasterDataType();
if (psOptionsIn->nBitDepth)
{
if (psOptionsIn->nBitDepth < 0 || psOptionsIn->nBitDepth > 31 ||
(eWorkDataType == GDT_Byte && psOptionsIn->nBitDepth > 8) ||
(eWorkDataType == GDT_UInt16 && psOptionsIn->nBitDepth > 16))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Invalid value nBitDepth = %d for type %s",
psOptionsIn->nBitDepth,
GDALGetDataTypeName(eWorkDataType));
return CE_Failure;
}
}
psOptions = GDALClonePansharpenOptions(psOptionsIn);
if (psOptions->nBitDepth == GDALGetDataTypeSize(eWorkDataType))
psOptions->nBitDepth = 0;
if (psOptions->nBitDepth &&
!(eWorkDataType == GDT_Byte || eWorkDataType == GDT_UInt16 ||
eWorkDataType == GDT_UInt32 || eWorkDataType == GDT_UInt64))
{
CPLError(CE_Warning, CPLE_AppDefined,
"Ignoring nBitDepth = %d for type %s", psOptions->nBitDepth,
GDALGetDataTypeName(eWorkDataType));
psOptions->nBitDepth = 0;
}
// Detect negative weights.
for (int i = 0; i < psOptions->nInputSpectralBands; i++)
{
if (psOptions->padfWeights[i] < 0.0)
{
bPositiveWeights = FALSE;
break;
}
}
for (int i = 0; i < psOptions->nInputSpectralBands; i++)
{
aMSBands.push_back(
GDALRasterBand::FromHandle(psOptions->pahInputSpectralBands[i]));
}
if (psOptions->bHasNoData)
{
bool bNeedToWrapInVRT = false;
for (int i = 0; i < psOptions->nInputSpectralBands; i++)
{
GDALRasterBand *poBand =
GDALRasterBand::FromHandle(psOptions->pahInputSpectralBands[i]);
int bHasNoData = FALSE;
double dfNoData = poBand->GetNoDataValue(&bHasNoData);
if (!bHasNoData || dfNoData != psOptions->dfNoData)
bNeedToWrapInVRT = true;
}
if (bNeedToWrapInVRT)
{
// Wrap spectral bands in a VRT if they don't have the nodata value.
VRTDataset *poVDS = nullptr;
for (int i = 0; i < psOptions->nInputSpectralBands; i++)
{
GDALRasterBand *poSrcBand = aMSBands[i];
int iVRTBand = 1;
if (anInputBands.empty() || i == 0)
{
poVDS = new VRTDataset(poSrcBand->GetXSize(),
poSrcBand->GetYSize());
aVDS.push_back(poVDS);
}
if (!anInputBands.empty())
{
anInputBands[i] = i + 1;
iVRTBand = i + 1;
}
poVDS->AddBand(poSrcBand->GetRasterDataType(), nullptr);
VRTSourcedRasterBand *poVRTBand =
dynamic_cast<VRTSourcedRasterBand *>(
poVDS->GetRasterBand(iVRTBand));
if (poVRTBand == nullptr)
return CE_Failure;
aMSBands[i] = poVRTBand;
poVRTBand->SetNoDataValue(psOptions->dfNoData);
const char *pszNBITS =
poSrcBand->GetMetadataItem("NBITS", "IMAGE_STRUCTURE");
if (pszNBITS)
poVRTBand->SetMetadataItem("NBITS", pszNBITS,
"IMAGE_STRUCTURE");
VRTSimpleSource *poSimpleSource = new VRTSimpleSource();
poVRTBand->ConfigureSource(
poSimpleSource, poSrcBand, FALSE, 0, 0,
poSrcBand->GetXSize(), poSrcBand->GetYSize(), 0, 0,
poSrcBand->GetXSize(), poSrcBand->GetYSize());
poVRTBand->AddSource(poSimpleSource);
}
}
}
// Setup thread pool.
int nThreads = psOptions->nThreads;
if (nThreads == -1)
nThreads = CPLGetNumCPUs();
else if (nThreads == 0)
{
const char *pszNumThreads =
CPLGetConfigOption("GDAL_NUM_THREADS", nullptr);
if (pszNumThreads)
{
if (EQUAL(pszNumThreads, "ALL_CPUS"))
nThreads = CPLGetNumCPUs();
else
nThreads = std::max(0, std::min(128, atoi(pszNumThreads)));
}
}
if (nThreads > 1)
{
CPLDebug("PANSHARPEN", "Using %d threads", nThreads);
poThreadPool = new (std::nothrow) CPLWorkerThreadPool();
// coverity[tainted_data]
if (poThreadPool == nullptr ||
!poThreadPool->Setup(nThreads, nullptr, nullptr))
{
delete poThreadPool;
poThreadPool = nullptr;
}
}
GDALRIOResampleAlg eResampleAlg = psOptions->eResampleAlg;
if (eResampleAlg != GRIORA_NearestNeighbour)
{
const char *pszResampling =
(eResampleAlg == GRIORA_Bilinear) ? "BILINEAR"
: (eResampleAlg == GRIORA_Cubic) ? "CUBIC"
: (eResampleAlg == GRIORA_CubicSpline) ? "CUBICSPLINE"
: (eResampleAlg == GRIORA_Lanczos) ? "LANCZOS"
: (eResampleAlg == GRIORA_Average) ? "AVERAGE"
: (eResampleAlg == GRIORA_RMS) ? "RMS"
: (eResampleAlg == GRIORA_Mode) ? "MODE"
: (eResampleAlg == GRIORA_Gauss) ? "GAUSS"
: "UNKNOWN";
GDALGetResampleFunction(pszResampling, &nKernelRadius);
}
return CE_None;
}
/************************************************************************/
/* WeightedBroveyWithNoData() */
/************************************************************************/
template <class WorkDataType, class OutDataType>
void GDALPansharpenOperation::WeightedBroveyWithNoData(
const WorkDataType *pPanBuffer,
const WorkDataType *pUpsampledSpectralBuffer, OutDataType *pDataBuf,
size_t nValues, size_t nBandValues, WorkDataType nMaxValue) const
{
WorkDataType noData, validValue;
GDALCopyWord(psOptions->dfNoData, noData);
if constexpr (!(std::numeric_limits<WorkDataType>::is_integer))
validValue = static_cast<WorkDataType>(noData + 1e-5);
else if (noData == std::numeric_limits<WorkDataType>::min())
validValue = std::numeric_limits<WorkDataType>::min() + 1;
else
validValue = noData - 1;
for (size_t j = 0; j < nValues; j++)
{
double dfPseudoPanchro = 0.0;
for (int i = 0; i < psOptions->nInputSpectralBands; i++)
{
WorkDataType nSpectralVal =
pUpsampledSpectralBuffer[i * nBandValues + j];
if (nSpectralVal == noData)
{
dfPseudoPanchro = 0.0;
break;
}
dfPseudoPanchro += psOptions->padfWeights[i] * nSpectralVal;
}
if (dfPseudoPanchro != 0.0 && pPanBuffer[j] != noData)
{
const double dfFactor = pPanBuffer[j] / dfPseudoPanchro;
for (int i = 0; i < psOptions->nOutPansharpenedBands; i++)
{
WorkDataType nRawValue = pUpsampledSpectralBuffer
[psOptions->panOutPansharpenedBands[i] * nBandValues + j];
WorkDataType nPansharpenedValue;
GDALCopyWord(nRawValue * dfFactor, nPansharpenedValue);
if (nMaxValue != 0 && nPansharpenedValue > nMaxValue)
nPansharpenedValue = nMaxValue;
// We don't want a valid value to be mapped to NoData.
if (nPansharpenedValue == noData)
nPansharpenedValue = validValue;
GDALCopyWord(nPansharpenedValue, pDataBuf[i * nBandValues + j]);
}
}
else
{
for (int i = 0; i < psOptions->nOutPansharpenedBands; i++)
{
GDALCopyWord(noData, pDataBuf[i * nBandValues + j]);
}
}
}
}
/************************************************************************/
/* ComputeFactor() */
/************************************************************************/
template <class T>
static inline double ComputeFactor(T panValue, double dfPseudoPanchro)
{
if (dfPseudoPanchro == 0.0)
return 0.0;
return panValue / dfPseudoPanchro;
}
/************************************************************************/
/* ClampAndRound() */
/************************************************************************/
template <class T> static inline T ClampAndRound(double dfVal, T nMaxValue)
{
if (dfVal > nMaxValue)
return nMaxValue;
else
return static_cast<T>(dfVal + 0.5);
}
/************************************************************************/
/* WeightedBrovey() */
/************************************************************************/
template <class WorkDataType, class OutDataType, int bHasBitDepth>
void GDALPansharpenOperation::WeightedBrovey3(
const WorkDataType *pPanBuffer,
const WorkDataType *pUpsampledSpectralBuffer, OutDataType *pDataBuf,
size_t nValues, size_t nBandValues, WorkDataType nMaxValue) const
{
if (psOptions->bHasNoData)
{
WeightedBroveyWithNoData<WorkDataType, OutDataType>(
pPanBuffer, pUpsampledSpectralBuffer, pDataBuf, nValues,
nBandValues, nMaxValue);
return;
}
for (size_t j = 0; j < nValues; j++)
{
double dfFactor = 0.0;
// if( pPanBuffer[j] == 0 )
// dfFactor = 1.0;
// else
{
double dfPseudoPanchro = 0.0;
for (int i = 0; i < psOptions->nInputSpectralBands; i++)
dfPseudoPanchro +=
psOptions->padfWeights[i] *
pUpsampledSpectralBuffer[i * nBandValues + j];
dfFactor = ComputeFactor(pPanBuffer[j], dfPseudoPanchro);
}
for (int i = 0; i < psOptions->nOutPansharpenedBands; i++)
{
WorkDataType nRawValue =
pUpsampledSpectralBuffer[psOptions->panOutPansharpenedBands[i] *
nBandValues +
j];
WorkDataType nPansharpenedValue;
GDALCopyWord(nRawValue * dfFactor, nPansharpenedValue);
if constexpr (bHasBitDepth)
{
if (nPansharpenedValue > nMaxValue)
nPansharpenedValue = nMaxValue;
}
GDALCopyWord(nPansharpenedValue, pDataBuf[i * nBandValues + j]);
}
}
}
/* We restrict to 64bit processors because they are guaranteed to have SSE2 */
/* Could possibly be used too on 32bit, but we would need to check at runtime */
#if defined(__x86_64) || defined(_M_X64)
#include "gdalsse_priv.h"
template <class T, int NINPUT, int NOUTPUT>
size_t GDALPansharpenOperation::WeightedBroveyPositiveWeightsInternal(
const T *pPanBuffer, const T *pUpsampledSpectralBuffer, T *pDataBuf,
size_t nValues, size_t nBandValues, T nMaxValue) const
{
static_assert(NINPUT == 3 || NINPUT == 4);
static_assert(NOUTPUT == 3 || NOUTPUT == 4);
const XMMReg4Double w0 =
XMMReg4Double::Load1ValHighAndLow(psOptions->padfWeights + 0);
const XMMReg4Double w1 =
XMMReg4Double::Load1ValHighAndLow(psOptions->padfWeights + 1);
const XMMReg4Double w2 =
XMMReg4Double::Load1ValHighAndLow(psOptions->padfWeights + 2);
[[maybe_unused]] const XMMReg4Double w3 =
(NINPUT == 3)
? XMMReg4Double::Zero()
: XMMReg4Double::Load1ValHighAndLow(psOptions->padfWeights + 3);
const XMMReg4Double zero = XMMReg4Double::Zero();
double dfMaxValue = nMaxValue;
const XMMReg4Double maxValue =
XMMReg4Double::Load1ValHighAndLow(&dfMaxValue);
size_t j = 0; // Used after for.
for (; j + 3 < nValues; j += 4)
{
XMMReg4Double pseudoPanchro = zero;
XMMReg4Double val0 = XMMReg4Double::Load4Val(pUpsampledSpectralBuffer +
0 * nBandValues + j);
XMMReg4Double val1 = XMMReg4Double::Load4Val(pUpsampledSpectralBuffer +
1 * nBandValues + j);
XMMReg4Double val2 = XMMReg4Double::Load4Val(pUpsampledSpectralBuffer +
2 * nBandValues + j);
XMMReg4Double val3;
if constexpr (NINPUT == 4 || NOUTPUT == 4)
{
val3 = XMMReg4Double::Load4Val(pUpsampledSpectralBuffer +
3 * nBandValues + j);
}
pseudoPanchro += w0 * val0;
pseudoPanchro += w1 * val1;
pseudoPanchro += w2 * val2;
if constexpr (NINPUT == 4)
pseudoPanchro += w3 * val3;
/* Little trick to avoid use of ternary operator due to one of the
* branch being zero */
XMMReg4Double factor = XMMReg4Double::And(
XMMReg4Double::NotEquals(pseudoPanchro, zero),
XMMReg4Double::Load4Val(pPanBuffer + j) / pseudoPanchro);
val0 = XMMReg4Double::Min(val0 * factor, maxValue);
val1 = XMMReg4Double::Min(val1 * factor, maxValue);
val2 = XMMReg4Double::Min(val2 * factor, maxValue);
if constexpr (NOUTPUT == 4)
{
val3 = XMMReg4Double::Min(val3 * factor, maxValue);
}
val0.Store4Val(pDataBuf + 0 * nBandValues + j);
val1.Store4Val(pDataBuf + 1 * nBandValues + j);
val2.Store4Val(pDataBuf + 2 * nBandValues + j);
if constexpr (NOUTPUT == 4)
{
val3.Store4Val(pDataBuf + 3 * nBandValues + j);
}
}
return j;
}
#else
template <class T, int NINPUT, int NOUTPUT>
size_t GDALPansharpenOperation::WeightedBroveyPositiveWeightsInternal(
const T *pPanBuffer, const T *pUpsampledSpectralBuffer, T *pDataBuf,
size_t nValues, size_t nBandValues, T nMaxValue) const
{
static_assert(NINPUT == 3 || NINPUT == 4);
const double dfw0 = psOptions->padfWeights[0];
const double dfw1 = psOptions->padfWeights[1];
const double dfw2 = psOptions->padfWeights[2];
// cppcheck-suppress knownConditionTrueFalse
[[maybe_unused]] const double dfw3 =
(NINPUT == 3) ? 0 : psOptions->padfWeights[3];
size_t j = 0; // Used after for.
for (; j + 1 < nValues; j += 2)
{
double dfFactor = 0.0;
double dfFactor2 = 0.0;
double dfPseudoPanchro = 0.0;
double dfPseudoPanchro2 = 0.0;
dfPseudoPanchro += dfw0 * pUpsampledSpectralBuffer[j];
dfPseudoPanchro2 += dfw0 * pUpsampledSpectralBuffer[j + 1];
dfPseudoPanchro += dfw1 * pUpsampledSpectralBuffer[nBandValues + j];
dfPseudoPanchro2 +=
dfw1 * pUpsampledSpectralBuffer[nBandValues + j + 1];
dfPseudoPanchro += dfw2 * pUpsampledSpectralBuffer[2 * nBandValues + j];
dfPseudoPanchro2 +=
dfw2 * pUpsampledSpectralBuffer[2 * nBandValues + j + 1];
if constexpr (NINPUT == 4)
{
dfPseudoPanchro +=
dfw3 * pUpsampledSpectralBuffer[3 * nBandValues + j];
dfPseudoPanchro2 +=
dfw3 * pUpsampledSpectralBuffer[3 * nBandValues + j + 1];
}
dfFactor = ComputeFactor(pPanBuffer[j], dfPseudoPanchro);
dfFactor2 = ComputeFactor(pPanBuffer[j + 1], dfPseudoPanchro2);
for (int i = 0; i < NOUTPUT; i++)
{
T nRawValue = pUpsampledSpectralBuffer[i * nBandValues + j];
double dfTmp = nRawValue * dfFactor;
pDataBuf[i * nBandValues + j] = ClampAndRound(dfTmp, nMaxValue);
T nRawValue2 = pUpsampledSpectralBuffer[i * nBandValues + j + 1];
double dfTmp2 = nRawValue2 * dfFactor2;
pDataBuf[i * nBandValues + j + 1] =
ClampAndRound(dfTmp2, nMaxValue);
}
}
return j;
}
#endif
template <class T>
void GDALPansharpenOperation::WeightedBroveyPositiveWeights(
const T *pPanBuffer, const T *pUpsampledSpectralBuffer, T *pDataBuf,
size_t nValues, size_t nBandValues, T nMaxValue) const
{
if (psOptions->bHasNoData)
{
WeightedBroveyWithNoData<T, T>(pPanBuffer, pUpsampledSpectralBuffer,
pDataBuf, nValues, nBandValues,
nMaxValue);
return;
}
if (nMaxValue == 0)
nMaxValue = std::numeric_limits<T>::max();
size_t j;
if (psOptions->nInputSpectralBands == 3 &&
psOptions->nOutPansharpenedBands == 3 &&
psOptions->panOutPansharpenedBands[0] == 0 &&
psOptions->panOutPansharpenedBands[1] == 1 &&
psOptions->panOutPansharpenedBands[2] == 2)
{
j = WeightedBroveyPositiveWeightsInternal<T, 3, 3>(
pPanBuffer, pUpsampledSpectralBuffer, pDataBuf, nValues,
nBandValues, nMaxValue);
}
else if (psOptions->nInputSpectralBands == 4 &&
psOptions->nOutPansharpenedBands == 4 &&
psOptions->panOutPansharpenedBands[0] == 0 &&
psOptions->panOutPansharpenedBands[1] == 1 &&
psOptions->panOutPansharpenedBands[2] == 2 &&
psOptions->panOutPansharpenedBands[3] == 3)
{
j = WeightedBroveyPositiveWeightsInternal<T, 4, 4>(
pPanBuffer, pUpsampledSpectralBuffer, pDataBuf, nValues,
nBandValues, nMaxValue);
}
else if (psOptions->nInputSpectralBands == 4 &&
psOptions->nOutPansharpenedBands == 3 &&
psOptions->panOutPansharpenedBands[0] == 0 &&
psOptions->panOutPansharpenedBands[1] == 1 &&
psOptions->panOutPansharpenedBands[2] == 2)
{
j = WeightedBroveyPositiveWeightsInternal<T, 4, 3>(
pPanBuffer, pUpsampledSpectralBuffer, pDataBuf, nValues,
nBandValues, nMaxValue);
}
else
{
for (j = 0; j + 1 < nValues; j += 2)
{
double dfFactor = 0.0;
double dfFactor2 = 0.0;
double dfPseudoPanchro = 0.0;
double dfPseudoPanchro2 = 0.0;
for (int i = 0; i < psOptions->nInputSpectralBands; i++)
{
dfPseudoPanchro +=
psOptions->padfWeights[i] *
pUpsampledSpectralBuffer[i * nBandValues + j];
dfPseudoPanchro2 +=
psOptions->padfWeights[i] *
pUpsampledSpectralBuffer[i * nBandValues + j + 1];
}
dfFactor = ComputeFactor(pPanBuffer[j], dfPseudoPanchro);
dfFactor2 = ComputeFactor(pPanBuffer[j + 1], dfPseudoPanchro2);
for (int i = 0; i < psOptions->nOutPansharpenedBands; i++)
{
const T nRawValue = pUpsampledSpectralBuffer
[psOptions->panOutPansharpenedBands[i] * nBandValues + j];
const double dfTmp = nRawValue * dfFactor;
pDataBuf[i * nBandValues + j] = ClampAndRound(dfTmp, nMaxValue);
const T nRawValue2 = pUpsampledSpectralBuffer
[psOptions->panOutPansharpenedBands[i] * nBandValues + j +
1];
const double dfTmp2 = nRawValue2 * dfFactor2;
pDataBuf[i * nBandValues + j + 1] =
ClampAndRound(dfTmp2, nMaxValue);
}
}
}
for (; j < nValues; j++)
{
double dfFactor = 0.0;
double dfPseudoPanchro = 0.0;
for (int i = 0; i < psOptions->nInputSpectralBands; i++)
dfPseudoPanchro += psOptions->padfWeights[i] *
pUpsampledSpectralBuffer[i * nBandValues + j];
dfFactor = ComputeFactor(pPanBuffer[j], dfPseudoPanchro);
for (int i = 0; i < psOptions->nOutPansharpenedBands; i++)
{
T nRawValue =
pUpsampledSpectralBuffer[psOptions->panOutPansharpenedBands[i] *
nBandValues +
j];
double dfTmp = nRawValue * dfFactor;
pDataBuf[i * nBandValues + j] = ClampAndRound(dfTmp, nMaxValue);
}
}
}
template <class WorkDataType, class OutDataType>
void GDALPansharpenOperation::WeightedBrovey(
const WorkDataType *pPanBuffer,
const WorkDataType *pUpsampledSpectralBuffer, OutDataType *pDataBuf,
size_t nValues, size_t nBandValues, WorkDataType nMaxValue) const
{
if (nMaxValue == 0)
WeightedBrovey3<WorkDataType, OutDataType, FALSE>(
pPanBuffer, pUpsampledSpectralBuffer, pDataBuf, nValues,
nBandValues, 0);
else
{
WeightedBrovey3<WorkDataType, OutDataType, TRUE>(
pPanBuffer, pUpsampledSpectralBuffer, pDataBuf, nValues,
nBandValues, nMaxValue);
}
}
template <class T>
void GDALPansharpenOperation::WeightedBroveyGByteOrUInt16(
const T *pPanBuffer, const T *pUpsampledSpectralBuffer, T *pDataBuf,
size_t nValues, size_t nBandValues, T nMaxValue) const
{
if (bPositiveWeights)
{
WeightedBroveyPositiveWeights(pPanBuffer, pUpsampledSpectralBuffer,
pDataBuf, nValues, nBandValues,
nMaxValue);
}
else if (nMaxValue == 0)
{
WeightedBrovey3<T, T, FALSE>(pPanBuffer, pUpsampledSpectralBuffer,
pDataBuf, nValues, nBandValues, 0);
}
else
{
WeightedBrovey3<T, T, TRUE>(pPanBuffer, pUpsampledSpectralBuffer,
pDataBuf, nValues, nBandValues, nMaxValue);
}
}
template <>
void GDALPansharpenOperation::WeightedBrovey<GByte, GByte>(
const GByte *pPanBuffer, const GByte *pUpsampledSpectralBuffer,
GByte *pDataBuf, size_t nValues, size_t nBandValues, GByte nMaxValue) const
{
WeightedBroveyGByteOrUInt16(pPanBuffer, pUpsampledSpectralBuffer, pDataBuf,
nValues, nBandValues, nMaxValue);
}
template <>
void GDALPansharpenOperation::WeightedBrovey<GUInt16, GUInt16>(
const GUInt16 *pPanBuffer, const GUInt16 *pUpsampledSpectralBuffer,
GUInt16 *pDataBuf, size_t nValues, size_t nBandValues,
GUInt16 nMaxValue) const
{
WeightedBroveyGByteOrUInt16(pPanBuffer, pUpsampledSpectralBuffer, pDataBuf,
nValues, nBandValues, nMaxValue);
}
template <class WorkDataType>
CPLErr GDALPansharpenOperation::WeightedBrovey(
const WorkDataType *pPanBuffer,
const WorkDataType *pUpsampledSpectralBuffer, void *pDataBuf,
GDALDataType eBufDataType, size_t nValues, size_t nBandValues,
WorkDataType nMaxValue) const
{
switch (eBufDataType)
{
case GDT_Byte:
WeightedBrovey(pPanBuffer, pUpsampledSpectralBuffer,
static_cast<GByte *>(pDataBuf), nValues, nBandValues,
nMaxValue);
break;
case GDT_UInt16:
WeightedBrovey(pPanBuffer, pUpsampledSpectralBuffer,
static_cast<GUInt16 *>(pDataBuf), nValues,
nBandValues, nMaxValue);
break;
#ifndef LIMIT_TYPES
case GDT_Int8:
WeightedBrovey(pPanBuffer, pUpsampledSpectralBuffer,
static_cast<GInt8 *>(pDataBuf), nValues, nBandValues,
nMaxValue);
break;
case GDT_Int16:
WeightedBrovey(pPanBuffer, pUpsampledSpectralBuffer,
static_cast<GInt16 *>(pDataBuf), nValues,
nBandValues, nMaxValue);