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gdalproxydataset.cpp
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/******************************************************************************
*
* Project: GDAL Core
* Purpose: A dataset and raster band classes that act as proxy for underlying
* GDALDataset* and GDALRasterBand*
* Author: Even Rouault <even dot rouault at spatialys.com>
*
******************************************************************************
* Copyright (c) 2008-2014, Even Rouault <even dot rouault at spatialys.com>
*
* SPDX-License-Identifier: MIT
****************************************************************************/
#include "cpl_port.h"
#include "gdal_proxy.h"
#include <cstddef>
#include "cpl_error.h"
#include "cpl_progress.h"
#include "cpl_virtualmem.h"
#include "gdal.h"
#include "gdal_priv.h"
/*! @cond Doxygen_Suppress */
/* ******************************************************************** */
/* GDALProxyDataset */
/* ******************************************************************** */
#define D_PROXY_METHOD_WITH_RET(retType, retErrValue, methodName, argList, \
argParams) \
retType GDALProxyDataset::methodName argList \
{ \
retType ret; \
GDALDataset *poUnderlyingDataset = RefUnderlyingDataset(); \
if (poUnderlyingDataset) \
{ \
ret = poUnderlyingDataset->methodName argParams; \
UnrefUnderlyingDataset(poUnderlyingDataset); \
} \
else \
{ \
ret = retErrValue; \
} \
return ret; \
}
CPLErr GDALProxyDataset::IRasterIO(
GDALRWFlag eRWFlag, int nXOff, int nYOff, int nXSize, int nYSize,
void *pData, int nBufXSize, int nBufYSize, GDALDataType eBufType,
int nBandCount, BANDMAP_TYPE panBandMap, GSpacing nPixelSpace,
GSpacing nLineSpace, GSpacing nBandSpace, GDALRasterIOExtraArg *psExtraArg)
{
CPLErr ret;
GDALDataset *poUnderlyingDataset = RefUnderlyingDataset();
if (poUnderlyingDataset)
{
/* --------------------------------------------------------------------
*/
/* Do some validation of parameters. */
/* --------------------------------------------------------------------
*/
if (nXOff + nXSize > poUnderlyingDataset->GetRasterXSize() ||
nYOff + nYSize > poUnderlyingDataset->GetRasterYSize())
{
ReportError(CE_Failure, CPLE_IllegalArg,
"Access window out of range in RasterIO(). Requested\n"
"(%d,%d) of size %dx%d on raster of %dx%d.",
nXOff, nYOff, nXSize, nYSize,
poUnderlyingDataset->GetRasterXSize(),
poUnderlyingDataset->GetRasterYSize());
ret = CE_Failure;
}
else if (panBandMap == nullptr &&
nBandCount > poUnderlyingDataset->GetRasterCount())
{
ReportError(CE_Failure, CPLE_IllegalArg,
"%s: nBandCount cannot be greater than %d", "IRasterIO",
poUnderlyingDataset->GetRasterCount());
ret = CE_Failure;
}
else
{
ret = CE_None;
for (int i = 0; i < nBandCount && ret == CE_None; ++i)
{
int iBand = (panBandMap != nullptr) ? panBandMap[i] : i + 1;
if (iBand < 1 || iBand > poUnderlyingDataset->GetRasterCount())
{
ReportError(CE_Failure, CPLE_IllegalArg,
"%s: panBandMap[%d] = %d, this band does not "
"exist on dataset.",
"IRasterIO", i, iBand);
ret = CE_Failure;
}
if (ret == CE_None &&
poUnderlyingDataset->GetRasterBand(iBand) == nullptr)
{
ReportError(CE_Failure, CPLE_IllegalArg,
"%s: panBandMap[%d]=%d, this band should exist "
"but is NULL!",
"IRasterIO", i, iBand);
ret = CE_Failure;
}
}
if (ret != CE_Failure)
{
ret = poUnderlyingDataset->IRasterIO(
eRWFlag, nXOff, nYOff, nXSize, nYSize, pData, nBufXSize,
nBufYSize, eBufType, nBandCount, panBandMap, nPixelSpace,
nLineSpace, nBandSpace, psExtraArg);
}
}
UnrefUnderlyingDataset(poUnderlyingDataset);
}
else
{
ret = CE_Failure;
}
return ret;
}
D_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, BlockBasedRasterIO,
(GDALRWFlag eRWFlag, int nXOff, int nYOff, int nXSize,
int nYSize, void *pData, int nBufXSize, int nBufYSize,
GDALDataType eBufType, int nBandCount,
const int *panBandMap, GSpacing nPixelSpace,
GSpacing nLineSpace, GSpacing nBandSpace,
GDALRasterIOExtraArg *psExtraArg),
(eRWFlag, nXOff, nYOff, nXSize, nYSize, pData,
nBufXSize, nBufYSize, eBufType, nBandCount, panBandMap,
nPixelSpace, nLineSpace, nBandSpace, psExtraArg))
D_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, IBuildOverviews,
(const char *pszResampling, int nOverviews,
const int *panOverviewList, int nListBands,
const int *panBandList, GDALProgressFunc pfnProgress,
void *pProgressData, CSLConstList papszOptions),
(pszResampling, nOverviews, panOverviewList, nListBands,
panBandList, pfnProgress, pProgressData, papszOptions))
D_PROXY_METHOD_WITH_RET(CPLStringList, CPLStringList(), GetCompressionFormats,
(int nXOff, int nYOff, int nXSize, int nYSize,
int nBandCount, const int *panBandList),
(nXOff, nYOff, nXSize, nYSize, nBandCount, panBandList))
D_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, ReadCompressedData,
(const char *pszFormat, int nXOff, int nYOff,
int nXSize, int nYSize, int nBandCount,
const int *panBandList, void **ppBuffer,
size_t *pnBufferSize, char **ppszDetailedFormat),
(pszFormat, nXOff, nYOff, nXSize, nYSize, nBandCount,
panBandList, ppBuffer, pnBufferSize,
ppszDetailedFormat))
D_PROXY_METHOD_WITH_RET(CPLErr, CE_None, FlushCache, (bool bAtClosing),
(bAtClosing))
D_PROXY_METHOD_WITH_RET(char **, nullptr, GetMetadataDomainList, (), ())
D_PROXY_METHOD_WITH_RET(char **, nullptr, GetMetadata, (const char *pszDomain),
(pszDomain))
D_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetMetadata,
(char **papszMetadata, const char *pszDomain),
(papszMetadata, pszDomain))
D_PROXY_METHOD_WITH_RET(const char *, nullptr, GetMetadataItem,
(const char *pszName, const char *pszDomain),
(pszName, pszDomain))
D_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetMetadataItem,
(const char *pszName, const char *pszValue,
const char *pszDomain),
(pszName, pszValue, pszDomain))
D_PROXY_METHOD_WITH_RET(const OGRSpatialReference *, nullptr, GetSpatialRef,
() const, ())
D_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetSpatialRef,
(const OGRSpatialReference *poSRS), (poSRS))
D_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, GetGeoTransform,
(double *padfGeoTransform), (padfGeoTransform))
D_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetGeoTransform,
(double *padfGeoTransform), (padfGeoTransform))
D_PROXY_METHOD_WITH_RET(void *, nullptr, GetInternalHandle, (const char *arg1),
(arg1))
D_PROXY_METHOD_WITH_RET(GDALDriver *, nullptr, GetDriver, (), ())
D_PROXY_METHOD_WITH_RET(char **, nullptr, GetFileList, (), ())
D_PROXY_METHOD_WITH_RET(int, 0, GetGCPCount, (), ())
D_PROXY_METHOD_WITH_RET(const OGRSpatialReference *, nullptr, GetGCPSpatialRef,
() const, ())
D_PROXY_METHOD_WITH_RET(const GDAL_GCP *, nullptr, GetGCPs, (), ())
D_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetGCPs,
(int nGCPCount, const GDAL_GCP *pasGCPList,
const OGRSpatialReference *poGCP_SRS),
(nGCPCount, pasGCPList, poGCP_SRS))
D_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, AdviseRead,
(int nXOff, int nYOff, int nXSize, int nYSize,
int nBufXSize, int nBufYSize, GDALDataType eDT,
int nBandCount, int *panBandList, char **papszOptions),
(nXOff, nYOff, nXSize, nYSize, nBufXSize, nBufYSize,
eDT, nBandCount, panBandList, papszOptions))
D_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, CreateMaskBand, (int nFlagsIn),
(nFlagsIn))
/************************************************************************/
/* UnrefUnderlyingDataset() */
/************************************************************************/
void GDALProxyDataset::UnrefUnderlyingDataset(
GDALDataset * /* poUnderlyingDataset */) const
{
}
/* ******************************************************************** */
/* GDALProxyRasterBand */
/* ******************************************************************** */
#define RB_PROXY_METHOD_WITH_RET(retType, retErrValue, methodName, argList, \
argParams) \
retType GDALProxyRasterBand::methodName argList \
{ \
retType ret; \
GDALRasterBand *poSrcBand = RefUnderlyingRasterBand(); \
if (poSrcBand) \
{ \
ret = poSrcBand->methodName argParams; \
UnrefUnderlyingRasterBand(poSrcBand); \
} \
else \
{ \
ret = retErrValue; \
} \
return ret; \
}
#define RB_PROXY_METHOD_WITH_RET_WITH_INIT_BLOCK( \
retType, retErrValue, methodName, argList, argParams) \
retType GDALProxyRasterBand::methodName argList \
{ \
retType ret; \
GDALRasterBand *poSrcBand = RefUnderlyingRasterBand(); \
if (poSrcBand) \
{ \
if (!poSrcBand->InitBlockInfo()) \
ret = CE_Failure; \
else \
{ \
int nSrcBlockXSize, nSrcBlockYSize; \
poSrcBand->GetBlockSize(&nSrcBlockXSize, &nSrcBlockYSize); \
if (poSrcBand->GetRasterDataType() != GetRasterDataType()) \
{ \
CPLError( \
CE_Failure, CPLE_AppDefined, \
"Inconsistent datatype between proxy and source"); \
ret = CE_Failure; \
} \
else if (nSrcBlockXSize != nBlockXSize || \
nSrcBlockYSize != nBlockYSize) \
{ \
CPLError(CE_Failure, CPLE_AppDefined, \
"Inconsistent block dimensions between proxy " \
"and source"); \
ret = CE_Failure; \
} \
else \
{ \
ret = poSrcBand->methodName argParams; \
} \
} \
UnrefUnderlyingRasterBand(poSrcBand); \
} \
else \
{ \
ret = retErrValue; \
} \
return ret; \
}
RB_PROXY_METHOD_WITH_RET_WITH_INIT_BLOCK(CPLErr, CE_Failure, IReadBlock,
(int nXBlockOff, int nYBlockOff,
void *pImage),
(nXBlockOff, nYBlockOff, pImage))
RB_PROXY_METHOD_WITH_RET_WITH_INIT_BLOCK(CPLErr, CE_Failure, IWriteBlock,
(int nXBlockOff, int nYBlockOff,
void *pImage),
(nXBlockOff, nYBlockOff, pImage))
CPLErr GDALProxyRasterBand::IRasterIO(GDALRWFlag eRWFlag, int nXOff, int nYOff,
int nXSize, int nYSize, void *pData,
int nBufXSize, int nBufYSize,
GDALDataType eBufType,
GSpacing nPixelSpace, GSpacing nLineSpace,
GDALRasterIOExtraArg *psExtraArg)
{
CPLErr ret;
GDALRasterBand *poSrcBand = RefUnderlyingRasterBand();
if (poSrcBand)
{
/* --------------------------------------------------------------------
*/
/* Do some validation of parameters. */
/* --------------------------------------------------------------------
*/
if (nXOff + nXSize > poSrcBand->GetXSize() ||
nYOff + nYSize > poSrcBand->GetYSize())
{
ReportError(CE_Failure, CPLE_IllegalArg,
"Access window out of range in RasterIO(). Requested\n"
"(%d,%d) of size %dx%d on raster of %dx%d.",
nXOff, nYOff, nXSize, nYSize, poSrcBand->GetXSize(),
poSrcBand->GetYSize());
ret = CE_Failure;
}
else
{
ret = poSrcBand->IRasterIO(eRWFlag, nXOff, nYOff, nXSize, nYSize,
pData, nBufXSize, nBufYSize, eBufType,
nPixelSpace, nLineSpace, psExtraArg);
}
UnrefUnderlyingRasterBand(poSrcBand);
}
else
{
ret = CE_Failure;
}
return ret;
}
int GDALProxyRasterBand::IGetDataCoverageStatus(int nXOff, int nYOff,
int nXSize, int nYSize,
int nMaskFlagStop,
double *pdfDataPct)
{
if (pdfDataPct)
*pdfDataPct = 0.0;
int ret = GDAL_DATA_COVERAGE_STATUS_UNIMPLEMENTED |
GDAL_DATA_COVERAGE_STATUS_EMPTY;
GDALRasterBand *poSrcBand = RefUnderlyingRasterBand();
if (poSrcBand)
{
ret = poSrcBand->GetDataCoverageStatus(nXOff, nYOff, nXSize, nYSize,
nMaskFlagStop, pdfDataPct);
UnrefUnderlyingRasterBand(poSrcBand);
}
return ret;
}
RB_PROXY_METHOD_WITH_RET(char **, nullptr, GetMetadataDomainList, (), ())
RB_PROXY_METHOD_WITH_RET(char **, nullptr, GetMetadata, (const char *pszDomain),
(pszDomain))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetMetadata,
(char **papszMetadata, const char *pszDomain),
(papszMetadata, pszDomain))
const char *GDALProxyRasterBand::GetMetadataItem(const char *pszKey,
const char *pszDomain)
{
const char *pszRet = nullptr;
GDALRasterBand *poSrcBand = RefUnderlyingRasterBand();
if (poSrcBand)
{
if (!m_bEnablePixelTypeSignedByteWarning)
poSrcBand->EnablePixelTypeSignedByteWarning(false);
pszRet = poSrcBand->GetMetadataItem(pszKey, pszDomain);
poSrcBand->EnablePixelTypeSignedByteWarning(true);
UnrefUnderlyingRasterBand(poSrcBand);
}
return pszRet;
}
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetMetadataItem,
(const char *pszName, const char *pszValue,
const char *pszDomain),
(pszName, pszValue, pszDomain))
RB_PROXY_METHOD_WITH_RET(GDALRasterBlock *, nullptr, GetLockedBlockRef,
(int nXBlockOff, int nYBlockOff, int bJustInitialize),
(nXBlockOff, nYBlockOff, bJustInitialize))
RB_PROXY_METHOD_WITH_RET(GDALRasterBlock *, nullptr, TryGetLockedBlockRef,
(int nXBlockOff, int nYBlockOff),
(nXBlockOff, nYBlockOff))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, FlushBlock,
(int nXBlockOff, int nYBlockOff, int bWriteDirtyBlock),
(nXBlockOff, nYBlockOff, bWriteDirtyBlock))
CPLErr GDALProxyRasterBand::FlushCache(bool bAtClosing)
{
// We need to make sure that all cached bocks at the proxy level are
// first flushed
CPLErr ret = GDALRasterBand::FlushCache(bAtClosing);
if (ret == CE_None)
{
GDALRasterBand *poSrcBand = RefUnderlyingRasterBand();
if (poSrcBand)
{
ret = poSrcBand->FlushCache(bAtClosing);
UnrefUnderlyingRasterBand(poSrcBand);
}
else
{
ret = CE_Failure;
}
}
return ret;
}
RB_PROXY_METHOD_WITH_RET(char **, nullptr, GetCategoryNames, (), ())
RB_PROXY_METHOD_WITH_RET(double, 0, GetNoDataValue, (int *pbSuccess),
(pbSuccess))
RB_PROXY_METHOD_WITH_RET(double, 0, GetMinimum, (int *pbSuccess), (pbSuccess))
RB_PROXY_METHOD_WITH_RET(double, 0, GetMaximum, (int *pbSuccess), (pbSuccess))
RB_PROXY_METHOD_WITH_RET(double, 0, GetOffset, (int *pbSuccess), (pbSuccess))
RB_PROXY_METHOD_WITH_RET(double, 0, GetScale, (int *pbSuccess), (pbSuccess))
RB_PROXY_METHOD_WITH_RET(const char *, nullptr, GetUnitType, (), ())
RB_PROXY_METHOD_WITH_RET(GDALColorInterp, GCI_Undefined, GetColorInterpretation,
(), ())
RB_PROXY_METHOD_WITH_RET(GDALColorTable *, nullptr, GetColorTable, (), ())
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, Fill,
(double dfRealValue, double dfImaginaryValue),
(dfRealValue, dfImaginaryValue))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetCategoryNames, (char **arg),
(arg))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetNoDataValue, (double arg),
(arg))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, DeleteNoDataValue, (), ())
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetColorTable,
(GDALColorTable * arg), (arg))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetColorInterpretation,
(GDALColorInterp arg), (arg))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetOffset, (double arg), (arg))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetScale, (double arg), (arg))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetUnitType, (const char *arg),
(arg))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, GetStatistics,
(int bApproxOK, int bForce, double *pdfMin,
double *pdfMax, double *pdfMean, double *padfStdDev),
(bApproxOK, bForce, pdfMin, pdfMax, pdfMean,
padfStdDev))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, ComputeStatistics,
(int bApproxOK, double *pdfMin, double *pdfMax,
double *pdfMean, double *pdfStdDev,
GDALProgressFunc pfn, void *pProgressData),
(bApproxOK, pdfMin, pdfMax, pdfMean, pdfStdDev, pfn,
pProgressData))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetStatistics,
(double dfMin, double dfMax, double dfMean,
double dfStdDev),
(dfMin, dfMax, dfMean, dfStdDev))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, ComputeRasterMinMax,
(int arg1, double *arg2), (arg1, arg2))
RB_PROXY_METHOD_WITH_RET(int, 0, HasArbitraryOverviews, (), ())
RB_PROXY_METHOD_WITH_RET(int, 0, GetOverviewCount, (), ())
RB_PROXY_METHOD_WITH_RET(GDALRasterBand *, nullptr, GetOverview, (int arg1),
(arg1))
RB_PROXY_METHOD_WITH_RET(GDALRasterBand *, nullptr, GetRasterSampleOverview,
(GUIntBig arg1), (arg1))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, BuildOverviews,
(const char *arg1, int arg2, const int *arg3,
GDALProgressFunc arg4, void *arg5,
CSLConstList papszOptions),
(arg1, arg2, arg3, arg4, arg5, papszOptions))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, AdviseRead,
(int nXOff, int nYOff, int nXSize, int nYSize,
int nBufXSize, int nBufYSize, GDALDataType eDT,
char **papszOptions),
(nXOff, nYOff, nXSize, nYSize, nBufXSize, nBufYSize,
eDT, papszOptions))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, GetHistogram,
(double dfMin, double dfMax, int nBuckets,
GUIntBig *panHistogram, int bIncludeOutOfRange,
int bApproxOK, GDALProgressFunc pfn,
void *pProgressData),
(dfMin, dfMax, nBuckets, panHistogram,
bIncludeOutOfRange, bApproxOK, pfn, pProgressData))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, GetDefaultHistogram,
(double *pdfMin, double *pdfMax, int *pnBuckets,
GUIntBig **ppanHistogram, int bForce,
GDALProgressFunc pfn, void *pProgressData),
(pdfMin, pdfMax, pnBuckets, ppanHistogram, bForce, pfn,
pProgressData))
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetDefaultHistogram,
(double dfMin, double dfMax, int nBuckets,
GUIntBig *panHistogram),
(dfMin, dfMax, nBuckets, panHistogram))
RB_PROXY_METHOD_WITH_RET(GDALRasterAttributeTable *, nullptr, GetDefaultRAT, (),
())
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, SetDefaultRAT,
(const GDALRasterAttributeTable *arg1), (arg1))
RB_PROXY_METHOD_WITH_RET(GDALRasterBand *, nullptr, GetMaskBand, (), ())
RB_PROXY_METHOD_WITH_RET(int, 0, GetMaskFlags, (), ())
RB_PROXY_METHOD_WITH_RET(CPLErr, CE_Failure, CreateMaskBand, (int nFlagsIn),
(nFlagsIn))
RB_PROXY_METHOD_WITH_RET(bool, false, IsMaskBand, () const, ())
RB_PROXY_METHOD_WITH_RET(GDALMaskValueRange, GMVR_UNKNOWN, GetMaskValueRange,
() const, ())
RB_PROXY_METHOD_WITH_RET(CPLVirtualMem *, nullptr, GetVirtualMemAuto,
(GDALRWFlag eRWFlag, int *pnPixelSpace,
GIntBig *pnLineSpace, char **papszOptions),
(eRWFlag, pnPixelSpace, pnLineSpace, papszOptions))
RB_PROXY_METHOD_WITH_RET(
CPLErr, CE_Failure, InterpolateAtPoint,
(double dfPixel, double dfLine, GDALRIOResampleAlg eInterpolation,
double *pdfRealValue, double *pdfImagValue = nullptr) const,
(dfPixel, dfLine, eInterpolation, pdfRealValue, pdfImagValue))
void GDALProxyRasterBand::EnablePixelTypeSignedByteWarning(bool b)
{
GDALRasterBand *poSrcBand = RefUnderlyingRasterBand();
if (poSrcBand)
{
poSrcBand->EnablePixelTypeSignedByteWarning(b);
UnrefUnderlyingRasterBand(poSrcBand);
}
}
/************************************************************************/
/* UnrefUnderlyingRasterBand() */
/************************************************************************/
void GDALProxyRasterBand::UnrefUnderlyingRasterBand(
GDALRasterBand * /* poUnderlyingRasterBand */) const
{
}
/*! @endcond */