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jp2opjlikedataset.cpp
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/******************************************************************************
*
* Project: JPEG2000 driver based on OpenJPEG or Grok library
* Purpose: JPEG2000 driver based on OpenJPEG or Grok library
* Authors: Even Rouault, <even dot rouault at spatialys dot com>
* Aaron Boxer, <boxerab at protonmail dot com>
*
******************************************************************************
* Copyright (c) 2010-2014, Even Rouault <even dot rouault at spatialys dot com>
* Copyright (c) 2015, European Union (European Environment Agency)
* Copyright (c) 2023, Grok Image Compression Inc.
*
* SPDX-License-Identifier: MIT
****************************************************************************/
#include <cassert>
#include <vector>
#include "cpl_atomic_ops.h"
#include "cpl_multiproc.h"
#include "cpl_string.h"
#include "cpl_worker_thread_pool.h"
#include "gdal_frmts.h"
#include "gdaljp2abstractdataset.h"
#include "gdaljp2metadata.h"
#include "vrt/vrtdataset.h"
#include <algorithm>
#include "jp2opjlikedataset.h"
/************************************************************************/
/* JP2OPJLikeRasterBand() */
/************************************************************************/
template <typename CODEC, typename BASE>
JP2OPJLikeRasterBand<CODEC, BASE>::JP2OPJLikeRasterBand(
JP2OPJLikeDataset<CODEC, BASE> *poDSIn, int nBandIn,
GDALDataType eDataTypeIn, int nBits, int bPromoteTo8BitIn,
int nBlockXSizeIn, int nBlockYSizeIn)
{
this->eDataType = eDataTypeIn;
this->nBlockXSize = nBlockXSizeIn;
this->nBlockYSize = nBlockYSizeIn;
this->bPromoteTo8Bit = bPromoteTo8BitIn;
poCT = nullptr;
if ((nBits % 8) != 0)
GDALRasterBand::SetMetadataItem(
"NBITS", CPLString().Printf("%d", nBits), "IMAGE_STRUCTURE");
GDALRasterBand::SetMetadataItem("COMPRESSION", "JPEG2000",
"IMAGE_STRUCTURE");
this->poDS = poDSIn;
this->nBand = nBandIn;
}
template <typename CODEC, typename BASE>
GDALColorTable *JP2OPJLikeRasterBand<CODEC, BASE>::GetColorTable()
{
return poCT;
}
template <typename CODEC, typename BASE>
int JP2OPJLikeRasterBand<CODEC, BASE>::HasArbitraryOverviews()
{
return poCT == nullptr;
}
/************************************************************************/
/* ~JP2OPJLikeRasterBand() */
/************************************************************************/
template <typename CODEC, typename BASE>
JP2OPJLikeRasterBand<CODEC, BASE>::~JP2OPJLikeRasterBand()
{
delete poCT;
}
/************************************************************************/
/* CLAMP_0_255() */
/************************************************************************/
static CPL_INLINE GByte CLAMP_0_255(int val)
{
if (val < 0)
return 0;
else if (val > 255)
return 255;
else
return (GByte)val;
}
/************************************************************************/
/* IReadBlock() */
/************************************************************************/
template <typename CODEC, typename BASE>
CPLErr JP2OPJLikeRasterBand<CODEC, BASE>::IReadBlock(int nBlockXOff,
int nBlockYOff,
void *pImage)
{
auto poGDS = (JP2OPJLikeDataset<CODEC, BASE> *)poDS;
#ifdef DEBUG_VERBOSE
int nXOff = nBlockXOff * nBlockXSize;
int nYOff = nBlockYOff * nBlockYSize;
int nXSize = std::min(nBlockXSize, nRasterXSize - nXOff);
int nYSize = std::min(nBlockYSize, nRasterYSize - nYOff);
if (poGDS->iLevel == 0)
{
CPLDebug(CODEC::debugId(),
"ds.GetRasterBand(%d).ReadRaster(%d,%d,%d,%d)", nBand, nXOff,
nYOff, nXSize, nYSize);
}
else
{
CPLDebug(CODEC::debugId(),
"ds.GetRasterBand(%d).GetOverview(%d).ReadRaster(%d,%d,%d,%d)",
nBand, poGDS->iLevel - 1, nXOff, nYOff, nXSize, nYSize);
}
#endif
if (poGDS->bEnoughMemoryToLoadOtherBands)
return poGDS->ReadBlock(nBand, poGDS->fp_, nBlockXOff, nBlockYOff,
pImage, poGDS->nBands, nullptr);
else
return poGDS->ReadBlock(nBand, poGDS->fp_, nBlockXOff, nBlockYOff,
pImage, 1, &nBand);
}
/************************************************************************/
/* IRasterIO() */
/************************************************************************/
template <typename CODEC, typename BASE>
CPLErr JP2OPJLikeRasterBand<CODEC, BASE>::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)
{
auto poGDS = (JP2OPJLikeDataset<CODEC, BASE> *)poDS;
if (eRWFlag != GF_Read)
return CE_Failure;
/* ==================================================================== */
/* Do we have overviews that would be appropriate to satisfy */
/* this request? */
/* ==================================================================== */
if ((nBufXSize < nXSize || nBufYSize < nYSize) && GetOverviewCount() > 0)
{
int bTried;
CPLErr eErr = TryOverviewRasterIO(
eRWFlag, nXOff, nYOff, nXSize, nYSize, pData, nBufXSize, nBufYSize,
eBufType, nPixelSpace, nLineSpace, psExtraArg, &bTried);
if (bTried)
return eErr;
}
int nRet =
poGDS->PreloadBlocks(this, nXOff, nYOff, nXSize, nYSize, 0, nullptr);
if (nRet < 0)
return CE_Failure;
poGDS->bEnoughMemoryToLoadOtherBands = nRet;
CPLErr eErr = GDALPamRasterBand::IRasterIO(
eRWFlag, nXOff, nYOff, nXSize, nYSize, pData, nBufXSize, nBufYSize,
eBufType, nPixelSpace, nLineSpace, psExtraArg);
// cppcheck-suppress redundantAssignment
poGDS->bEnoughMemoryToLoadOtherBands = TRUE;
return eErr;
}
template <typename CODEC, typename BASE> class JP2JobStruct
{
public:
JP2OPJLikeDataset<CODEC, BASE> *poGDS_;
int nBand;
std::vector<std::pair<int, int>> oPairs;
volatile int nCurPair;
int nBandCount;
const int *panBandMap;
volatile bool bSuccess;
};
/************************************************************************/
/* GetFileHandle() */
/************************************************************************/
template <typename CODEC, typename BASE>
VSILFILE *JP2OPJLikeDataset<CODEC, BASE>::GetFileHandle()
{
return this->fp_;
}
/************************************************************************/
/* ReadBlockInThread() */
/************************************************************************/
template <typename CODEC, typename BASE>
void JP2OPJLikeDataset<CODEC, BASE>::ReadBlockInThread(void *userdata)
{
int nPair;
auto poJob = (JP2JobStruct<CODEC, BASE> *)userdata;
JP2OPJLikeDataset *poGDS = poJob->poGDS_;
int nBand = poJob->nBand;
int nPairs = (int)poJob->oPairs.size();
int nBandCount = poJob->nBandCount;
const int *panBandMap = poJob->panBandMap;
VSILFILE *fp = VSIFOpenL(poGDS->m_osFilename.c_str(), "rb");
if (fp == nullptr)
{
CPLDebug(CODEC::debugId(), "Cannot open %s",
poGDS->m_osFilename.c_str());
poJob->bSuccess = false;
// VSIFree(pDummy);
return;
}
while ((nPair = CPLAtomicInc(&(poJob->nCurPair))) < nPairs &&
poJob->bSuccess)
{
int nBlockXOff = poJob->oPairs[nPair].first;
int nBlockYOff = poJob->oPairs[nPair].second;
poGDS->AcquireMutex();
GDALRasterBlock *poBlock =
poGDS->GetRasterBand(nBand)->GetLockedBlockRef(nBlockXOff,
nBlockYOff, TRUE);
poGDS->ReleaseMutex();
if (poBlock == nullptr)
{
poJob->bSuccess = false;
break;
}
void *pDstBuffer = poBlock->GetDataRef();
if (poGDS->ReadBlock(nBand, fp, nBlockXOff, nBlockYOff, pDstBuffer,
nBandCount, panBandMap) != CE_None)
{
poJob->bSuccess = false;
}
poBlock->DropLock();
}
VSIFCloseL(fp);
// VSIFree(pDummy);
}
/************************************************************************/
/* PreloadBlocks() */
/************************************************************************/
template <typename CODEC, typename BASE>
int JP2OPJLikeDataset<CODEC, BASE>::PreloadBlocks(
JP2OPJLikeRasterBand<CODEC, BASE> *poBand, int nXOff, int nYOff, int nXSize,
int nYSize, int nBandCount, const int *panBandMap)
{
int bRet = TRUE;
int nXStart = nXOff / poBand->nBlockXSize;
int nXEnd = (nXOff + nXSize - 1) / poBand->nBlockXSize;
int nYStart = nYOff / poBand->nBlockYSize;
int nYEnd = (nYOff + nYSize - 1) / poBand->nBlockYSize;
GIntBig nReqMem = (GIntBig)(nXEnd - nXStart + 1) * (nYEnd - nYStart + 1) *
poBand->nBlockXSize * poBand->nBlockYSize *
(GDALGetDataTypeSize(poBand->eDataType) / 8);
int nMaxThreads = this->GetNumThreads();
if (!this->bUseSetDecodeArea && nMaxThreads > 1)
{
if (nReqMem > GDALGetCacheMax64() / (nBandCount == 0 ? 1 : nBandCount))
return FALSE;
JP2JobStruct<CODEC, BASE> oJob;
this->m_nBlocksToLoad = 0;
try
{
for (int nBlockXOff = nXStart; nBlockXOff <= nXEnd; ++nBlockXOff)
{
for (int nBlockYOff = nYStart; nBlockYOff <= nYEnd;
++nBlockYOff)
{
GDALRasterBlock *poBlock =
poBand->TryGetLockedBlockRef(nBlockXOff, nBlockYOff);
if (poBlock != nullptr)
{
poBlock->DropLock();
continue;
}
oJob.oPairs.push_back(
std::pair<int, int>(nBlockXOff, nBlockYOff));
this->m_nBlocksToLoad++;
}
}
}
catch (const std::bad_alloc &)
{
CPLError(CE_Failure, CPLE_OutOfMemory, "Out of memory error");
this->m_nBlocksToLoad = 0;
return -1;
}
if (this->m_nBlocksToLoad > 1)
{
const int l_nThreads = std::min(this->m_nBlocksToLoad, nMaxThreads);
CPLJoinableThread **pahThreads =
(CPLJoinableThread **)VSI_CALLOC_VERBOSE(
sizeof(CPLJoinableThread *), l_nThreads);
if (pahThreads == nullptr)
{
this->m_nBlocksToLoad = 0;
return -1;
}
int i;
CPLDebug(CODEC::debugId(), "%d blocks to load (%d threads)",
this->m_nBlocksToLoad, l_nThreads);
oJob.poGDS_ = this;
oJob.nBand = poBand->GetBand();
oJob.nCurPair = -1;
if (nBandCount > 0)
{
oJob.nBandCount = nBandCount;
oJob.panBandMap = panBandMap;
}
else
{
if (nReqMem <= GDALGetCacheMax64() / nBands)
{
oJob.nBandCount = nBands;
oJob.panBandMap = nullptr;
}
else
{
bRet = FALSE;
oJob.nBandCount = 1;
oJob.panBandMap = &oJob.nBand;
}
}
oJob.bSuccess = true;
/* Flushes all dirty blocks from cache to disk to avoid them */
/* to be flushed randomly, and simultaneously, from our worker
* threads, */
/* which might cause races in the output driver. */
/* This is a workaround to a design defect of the block cache */
GDALRasterBlock::FlushDirtyBlocks();
for (i = 0; i < l_nThreads; i++)
{
pahThreads[i] =
CPLCreateJoinableThread(ReadBlockInThread, &oJob);
if (pahThreads[i] == nullptr)
oJob.bSuccess = false;
}
TemporarilyDropReadWriteLock();
for (i = 0; i < l_nThreads; i++)
CPLJoinThread(pahThreads[i]);
ReacquireReadWriteLock();
CPLFree(pahThreads);
if (!oJob.bSuccess)
{
this->m_nBlocksToLoad = 0;
return -1;
}
this->m_nBlocksToLoad = 0;
}
}
return bRet;
}
/************************************************************************/
/* GetEstimatedRAMUsage() */
/************************************************************************/
template <typename CODEC, typename BASE>
GIntBig JP2OPJLikeDataset<CODEC, BASE>::GetEstimatedRAMUsage()
{
// libopenjp2 holds the code block values in a uint32_t array.
GIntBig nVal = static_cast<GIntBig>(this->m_nTileWidth) *
this->m_nTileHeight * this->nBands * sizeof(uint32_t);
if (this->bSingleTiled)
{
// libopenjp2 ingests the codestream for a whole tile. So for a
// single-tiled image, this is roughly the size of the file.
const auto nCurPos = VSIFTellL(this->fp_);
VSIFSeekL(this->fp_, 0, SEEK_END);
nVal += VSIFTellL(this->fp_);
VSIFSeekL(this->fp_, nCurPos, SEEK_SET);
}
CPLDebug(CODEC::debugId(), "Estimated RAM usage for %s: %.2f GB",
GetDescription(), static_cast<double>(nVal * 1e-9));
return nVal;
}
/************************************************************************/
/* IRasterIO() */
/************************************************************************/
template <typename CODEC, typename BASE>
CPLErr JP2OPJLikeDataset<CODEC, BASE>::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)
{
if (eRWFlag != GF_Read)
return CE_Failure;
if (nBandCount < 1)
return CE_Failure;
auto poBand =
(JP2OPJLikeRasterBand<CODEC, BASE> *)GetRasterBand(panBandMap[0]);
/* ==================================================================== */
/* Do we have overviews that would be appropriate to satisfy */
/* this request? */
/* ==================================================================== */
if ((nBufXSize < nXSize || nBufYSize < nYSize) &&
poBand->GetOverviewCount() > 0)
{
int bTried;
CPLErr eErr = TryOverviewRasterIO(
eRWFlag, nXOff, nYOff, nXSize, nYSize, pData, nBufXSize, nBufYSize,
eBufType, nBandCount, panBandMap, nPixelSpace, nLineSpace,
nBandSpace, psExtraArg, &bTried);
if (bTried)
return eErr;
}
this->bEnoughMemoryToLoadOtherBands = PreloadBlocks(
poBand, nXOff, nYOff, nXSize, nYSize, nBandCount, panBandMap);
CPLErr eErr = GDALPamDataset::IRasterIO(
eRWFlag, nXOff, nYOff, nXSize, nYSize, pData, nBufXSize, nBufYSize,
eBufType, nBandCount, panBandMap, nPixelSpace, nLineSpace, nBandSpace,
psExtraArg);
this->bEnoughMemoryToLoadOtherBands = TRUE;
return eErr;
}
/************************************************************************/
/* IBuildOverviews() */
/************************************************************************/
template <typename CODEC, typename BASE>
CPLErr JP2OPJLikeDataset<CODEC, BASE>::IBuildOverviews(
const char *pszResampling, int nOverviews, const int *panOverviewList,
int nListBands, const int *panBandList, GDALProgressFunc pfnProgress,
void *pProgressData, CSLConstList papszOptions)
{
// In order for building external overviews to work properly, we
// discard any concept of internal overviews when the user
// first requests to build external overviews.
for (int i = 0; i < this->nOverviewCount; i++)
{
delete papoOverviewDS[i];
}
CPLFree(papoOverviewDS);
papoOverviewDS = nullptr;
this->nOverviewCount = 0;
return GDALPamDataset::IBuildOverviews(
pszResampling, nOverviews, panOverviewList, nListBands, panBandList,
pfnProgress, pProgressData, papszOptions);
}
/************************************************************************/
/* ReadBlock() */
/************************************************************************/
template <typename CODEC, typename BASE>
CPLErr JP2OPJLikeDataset<CODEC, BASE>::ReadBlock(int nBand, VSILFILE *fpIn,
int nBlockXOff, int nBlockYOff,
void *pImage, int nBandCount,
const int *panBandMap)
{
CPLErr eErr = CE_None;
CODEC localctx;
auto poBand = (JP2OPJLikeRasterBand<CODEC, BASE> *)GetRasterBand(nBand);
int nBlockXSize = poBand->nBlockXSize;
int nBlockYSize = poBand->nBlockYSize;
GDALDataType eDataType = poBand->eDataType;
int nDataTypeSize = (GDALGetDataTypeSize(eDataType) / 8);
int nTileNumber = nBlockXOff + nBlockYOff * poBand->nBlocksPerRow;
const int nWidthToRead =
std::min(nBlockXSize, nRasterXSize - nBlockXOff * nBlockXSize);
const int nHeightToRead =
std::min(nBlockYSize, nRasterYSize - nBlockYOff * nBlockYSize);
eErr = this->readBlockInit(fpIn, &localctx, nBlockXOff, nBlockYOff,
this->nRasterXSize, this->nRasterYSize,
nBlockXSize, nBlockYSize, nTileNumber);
if (eErr != CE_None)
goto end;
for (unsigned int iBand = 0; iBand < localctx.psImage->numcomps; iBand++)
{
if (localctx.psImage->comps[iBand].data == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"localctx.psImage->comps[%d].data == nullptr", iBand);
eErr = CE_Failure;
goto end;
}
}
for (int xBand = 0; xBand < nBandCount; xBand++)
{
GDALRasterBlock *poBlock = nullptr;
int iBand = (panBandMap) ? panBandMap[xBand] : xBand + 1;
int bPromoteTo8Bit =
((JP2OPJLikeRasterBand<CODEC, BASE> *)GetRasterBand(iBand))
->bPromoteTo8Bit;
void *pDstBuffer = nullptr;
if (iBand == nBand)
pDstBuffer = pImage;
else
{
AcquireMutex();
poBlock =
((JP2OPJLikeRasterBand<CODEC, BASE> *)GetRasterBand(iBand))
->TryGetLockedBlockRef(nBlockXOff, nBlockYOff);
if (poBlock != nullptr)
{
ReleaseMutex();
poBlock->DropLock();
continue;
}
poBlock = GetRasterBand(iBand)->GetLockedBlockRef(nBlockXOff,
nBlockYOff, TRUE);
ReleaseMutex();
if (poBlock == nullptr)
{
continue;
}
pDstBuffer = poBlock->GetDataRef();
}
if (this->bIs420)
{
if ((int)localctx.psImage->comps[0].w < nWidthToRead ||
(int)localctx.psImage->comps[0].h < nHeightToRead ||
localctx.psImage->comps[1].w !=
(localctx.psImage->comps[0].w + 1) / 2 ||
localctx.psImage->comps[1].h !=
(localctx.psImage->comps[0].h + 1) / 2 ||
localctx.psImage->comps[2].w !=
(localctx.psImage->comps[0].w + 1) / 2 ||
localctx.psImage->comps[2].h !=
(localctx.psImage->comps[0].h + 1) / 2 ||
(nBands == 4 &&
((int)localctx.psImage->comps[3].w < nWidthToRead ||
(int)localctx.psImage->comps[3].h < nHeightToRead)))
{
CPLError(CE_Failure, CPLE_AssertionFailed,
"Assertion at line %d of %s failed", __LINE__,
__FILE__);
if (poBlock != nullptr)
poBlock->DropLock();
eErr = CE_Failure;
goto end;
}
GByte *pDst = (GByte *)pDstBuffer;
if (iBand == 4)
{
const auto pSrcA = localctx.psImage->comps[3].data;
for (GPtrDiff_t j = 0; j < nHeightToRead; j++)
{
memcpy(pDst + j * nBlockXSize,
pSrcA + j * localctx.stride(localctx.psImage->comps),
nWidthToRead);
}
}
else
{
const auto pSrcY = localctx.psImage->comps[0].data;
const auto pSrcCb = localctx.psImage->comps[1].data;
const auto pSrcCr = localctx.psImage->comps[2].data;
for (GPtrDiff_t j = 0; j < nHeightToRead; j++)
{
for (int i = 0; i < nWidthToRead; i++)
{
int Y =
pSrcY[j * localctx.stride(localctx.psImage->comps) +
i];
int Cb =
pSrcCb[(j / 2) * localctx.stride(
localctx.psImage->comps + 1) +
(i / 2)];
int Cr =
pSrcCr[(j / 2) * localctx.stride(
localctx.psImage->comps + 2) +
(i / 2)];
if (iBand == 1)
pDst[j * nBlockXSize + i] =
CLAMP_0_255((int)(Y + 1.402 * (Cr - 128)));
else if (iBand == 2)
pDst[j * nBlockXSize + i] =
CLAMP_0_255((int)(Y - 0.34414 * (Cb - 128) -
0.71414 * (Cr - 128)));
else if (iBand == 3)
pDst[j * nBlockXSize + i] =
CLAMP_0_255((int)(Y + 1.772 * (Cb - 128)));
}
}
}
if (bPromoteTo8Bit)
{
for (GPtrDiff_t j = 0; j < nHeightToRead; j++)
{
for (int i = 0; i < nWidthToRead; i++)
{
pDst[j * nBlockXSize + i] *= 255;
}
}
}
}
else
{
if ((int)localctx.psImage->comps[iBand - 1].w < nWidthToRead ||
(int)localctx.psImage->comps[iBand - 1].h < nHeightToRead)
{
CPLError(CE_Failure, CPLE_AssertionFailed,
"Assertion at line %d of %s failed", __LINE__,
__FILE__);
if (poBlock != nullptr)
poBlock->DropLock();
eErr = CE_Failure;
goto end;
}
if (bPromoteTo8Bit)
{
for (GPtrDiff_t j = 0; j < nHeightToRead; j++)
{
for (int i = 0; i < nWidthToRead; i++)
{
localctx.psImage->comps[iBand - 1]
.data[j * localctx.stride(localctx.psImage->comps +
iBand - 1) +
i] *= 255;
}
}
}
if ((int)localctx.stride(localctx.psImage->comps + iBand - 1) ==
nBlockXSize &&
(int)localctx.psImage->comps[iBand - 1].h == nBlockYSize)
{
GDALCopyWords64(
localctx.psImage->comps[iBand - 1].data, GDT_Int32, 4,
pDstBuffer, eDataType, nDataTypeSize,
static_cast<GPtrDiff_t>(nBlockXSize) * nBlockYSize);
}
else
{
for (GPtrDiff_t j = 0; j < nHeightToRead; j++)
{
GDALCopyWords(
localctx.psImage->comps[iBand - 1].data +
j * localctx.stride(localctx.psImage->comps +
iBand - 1),
GDT_Int32, 4,
(GByte *)pDstBuffer + j * nBlockXSize * nDataTypeSize,
eDataType, nDataTypeSize, nWidthToRead);
}
}
}
if (poBlock != nullptr)
poBlock->DropLock();
}
end:
this->cache(&localctx);
return eErr;
}
/************************************************************************/
/* GetOverviewCount() */
/************************************************************************/
template <typename CODEC, typename BASE>
int JP2OPJLikeRasterBand<CODEC, BASE>::GetOverviewCount()
{
auto poGDS = cpl::down_cast<JP2OPJLikeDataset<CODEC, BASE> *>(poDS);
if (!poGDS->AreOverviewsEnabled())
return 0;
if (GDALPamRasterBand::GetOverviewCount() > 0)
return GDALPamRasterBand::GetOverviewCount();
return poGDS->nOverviewCount;
}
/************************************************************************/
/* GetOverview() */
/************************************************************************/
template <typename CODEC, typename BASE>
GDALRasterBand *JP2OPJLikeRasterBand<CODEC, BASE>::GetOverview(int iOvrLevel)
{
if (GDALPamRasterBand::GetOverviewCount() > 0)
return GDALPamRasterBand::GetOverview(iOvrLevel);
auto poGDS = (JP2OPJLikeDataset<CODEC, BASE> *)poDS;
if (iOvrLevel < 0 || iOvrLevel >= poGDS->nOverviewCount)
return nullptr;
return poGDS->papoOverviewDS[iOvrLevel]->GetRasterBand(nBand);
}
/************************************************************************/
/* GetColorInterpretation() */
/************************************************************************/
template <typename CODEC, typename BASE>
GDALColorInterp JP2OPJLikeRasterBand<CODEC, BASE>::GetColorInterpretation()
{
auto poGDS = (JP2OPJLikeDataset<CODEC, BASE> *)poDS;
if (poCT)
return GCI_PaletteIndex;
if (nBand == poGDS->nAlphaIndex + 1)
return GCI_AlphaBand;
if (poGDS->nBands <= 2 &&
poGDS->eColorSpace == CODEC::cvtenum(JP2_CLRSPC_GRAY))
return GCI_GrayIndex;
else if (poGDS->eColorSpace == CODEC::cvtenum(JP2_CLRSPC_SRGB) ||
poGDS->eColorSpace == CODEC::cvtenum(JP2_CLRSPC_SYCC))
{
if (nBand == poGDS->nRedIndex + 1)
return GCI_RedBand;
if (nBand == poGDS->nGreenIndex + 1)
return GCI_GreenBand;
if (nBand == poGDS->nBlueIndex + 1)
return GCI_BlueBand;
}
return GCI_Undefined;
}
/************************************************************************/
/* ==================================================================== */
/* JP2OPJLikeDataset */
/* ==================================================================== */
/************************************************************************/
/************************************************************************/
/* JP2OPJLikeDataset() */
/************************************************************************/
template <typename CODEC, typename BASE>
JP2OPJLikeDataset<CODEC, BASE>::JP2OPJLikeDataset()
{
this->init();
}
/************************************************************************/
/* ~JP2OPJLikeDataset() */
/************************************************************************/
template <typename CODEC, typename BASE>
JP2OPJLikeDataset<CODEC, BASE>::~JP2OPJLikeDataset()
{
JP2OPJLikeDataset::Close();
this->deinit();
}
/************************************************************************/
/* Close() */
/************************************************************************/
template <typename CODEC, typename BASE>
CPLErr JP2OPJLikeDataset<CODEC, BASE>::Close()
{
CPLErr eErr = CE_None;
if (nOpenFlags != OPEN_FLAGS_CLOSED)
{
if (JP2OPJLikeDataset::FlushCache(true) != CE_None)
eErr = CE_Failure;
this->closeJP2();
if (this->iLevel == 0 && this->fp_ != nullptr)
{
if (this->bRewrite)
{
GDALJP2Box oBox(this->fp_);
vsi_l_offset nOffsetJP2C = 0;
vsi_l_offset nLengthJP2C = 0;
vsi_l_offset nOffsetXML = 0;
vsi_l_offset nOffsetASOC = 0;
vsi_l_offset nOffsetUUID = 0;
vsi_l_offset nOffsetIHDR = 0;
vsi_l_offset nLengthIHDR = 0;
int bMSIBox = FALSE;
int bGMLData = FALSE;
int bUnsupportedConfiguration = FALSE;
if (oBox.ReadFirst())
{
while (strlen(oBox.GetType()) > 0)
{
if (EQUAL(oBox.GetType(), "jp2c"))
{
if (nOffsetJP2C == 0)
{
nOffsetJP2C = VSIFTellL(this->fp_);
nLengthJP2C = oBox.GetDataLength();
}
else
bUnsupportedConfiguration = TRUE;
}
else if (EQUAL(oBox.GetType(), "jp2h"))
{
GDALJP2Box oSubBox(this->fp_);
if (oSubBox.ReadFirstChild(&oBox) &&
EQUAL(oSubBox.GetType(), "ihdr"))
{
nOffsetIHDR = VSIFTellL(this->fp_);
nLengthIHDR = oSubBox.GetDataLength();
}
}
else if (EQUAL(oBox.GetType(), "xml "))
{
if (nOffsetXML == 0)
nOffsetXML = VSIFTellL(this->fp_);
}
else if (EQUAL(oBox.GetType(), "asoc"))
{
if (nOffsetASOC == 0)
nOffsetASOC = VSIFTellL(this->fp_);
GDALJP2Box oSubBox(this->fp_);
if (oSubBox.ReadFirstChild(&oBox) &&
EQUAL(oSubBox.GetType(), "lbl "))
{
char *pszLabel = (char *)oSubBox.ReadBoxData();
if (pszLabel != nullptr &&
EQUAL(pszLabel, "gml.data"))
{
bGMLData = TRUE;
}
else
bUnsupportedConfiguration = TRUE;
CPLFree(pszLabel);
}
else
bUnsupportedConfiguration = TRUE;
}
else if (EQUAL(oBox.GetType(), "uuid"))
{
if (nOffsetUUID == 0)
nOffsetUUID = VSIFTellL(this->fp_);
if (GDALJP2Metadata::IsUUID_MSI(oBox.GetUUID()))
bMSIBox = TRUE;
else if (!GDALJP2Metadata::IsUUID_XMP(
oBox.GetUUID()))
bUnsupportedConfiguration = TRUE;
}
else if (!EQUAL(oBox.GetType(), "jP ") &&
!EQUAL(oBox.GetType(), "ftyp") &&
!EQUAL(oBox.GetType(), "rreq") &&
!EQUAL(oBox.GetType(), "jp2h") &&
!EQUAL(oBox.GetType(), "jp2i"))
{
bUnsupportedConfiguration = TRUE;
}
if (bUnsupportedConfiguration || !oBox.ReadNext())
break;
}
}
const char *pszGMLJP2;
int bGeoreferencingCompatOfGMLJP2 =
(!m_oSRS.IsEmpty() && bGeoTransformValid && nGCPCount == 0);
if (bGeoreferencingCompatOfGMLJP2 &&
((this->bHasGeoreferencingAtOpening && bGMLData) ||
(!this->bHasGeoreferencingAtOpening)))
pszGMLJP2 = "GMLJP2=YES";
else
pszGMLJP2 = "GMLJP2=NO";
const char *pszGeoJP2;
int bGeoreferencingCompatOfGeoJP2 =
(!m_oSRS.IsEmpty() || nGCPCount != 0 || bGeoTransformValid);
if (bGeoreferencingCompatOfGeoJP2 &&
((this->bHasGeoreferencingAtOpening && bMSIBox) ||
(!this->bHasGeoreferencingAtOpening) ||
this->nGCPCount > 0))
pszGeoJP2 = "GeoJP2=YES";
else
pszGeoJP2 = "GeoJP2=NO";
/* Test that the length of the JP2C box is not 0 */
int bJP2CBoxOKForRewriteInPlace = TRUE;
if (nOffsetJP2C > 16 && !bUnsupportedConfiguration)
{
VSIFSeekL(this->fp_, nOffsetJP2C - 8, SEEK_SET);
GByte abyBuffer[8];
VSIFReadL(abyBuffer, 1, 8, this->fp_);
if (STARTS_WITH_CI((const char *)abyBuffer + 4, "jp2c") &&
abyBuffer[0] == 0 && abyBuffer[1] == 0 &&
abyBuffer[2] == 0 && abyBuffer[3] == 0)
{
if ((vsi_l_offset)(GUInt32)(nLengthJP2C + 8) ==
(nLengthJP2C + 8))
{
CPLDebug(
CODEC::debugId(),
"Patching length of JP2C box with real length");
VSIFSeekL(this->fp_, nOffsetJP2C - 8, SEEK_SET);
GUInt32 nLength = (GUInt32)nLengthJP2C + 8;
CPL_MSBPTR32(&nLength);
if (VSIFWriteL(&nLength, 1, 4, this->fp_) != 1)
eErr = CE_Failure;
}
else
bJP2CBoxOKForRewriteInPlace = FALSE;
}
}
if (nOffsetJP2C == 0 || bUnsupportedConfiguration)
{
eErr = CE_Failure;
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot rewrite file due to unsupported JP2 box "
"configuration");
VSIFCloseL(this->fp_);
}
else if (bJP2CBoxOKForRewriteInPlace &&
(nOffsetXML == 0 || nOffsetXML > nOffsetJP2C) &&
(nOffsetASOC == 0 || nOffsetASOC > nOffsetJP2C) &&
(nOffsetUUID == 0 || nOffsetUUID > nOffsetJP2C))
{
CPLDebug(CODEC::debugId(),
"Rewriting boxes after codestream");
/* Update IPR flag */
if (nLengthIHDR == 14)
{
VSIFSeekL(this->fp_, nOffsetIHDR + nLengthIHDR - 1,
SEEK_SET);
GByte bIPR = GetMetadata("xml:IPR") != nullptr;
if (VSIFWriteL(&bIPR, 1, 1, this->fp_) != 1)
eErr = CE_Failure;
}
VSIFSeekL(this->fp_, nOffsetJP2C + nLengthJP2C, SEEK_SET);
GDALJP2Metadata oJP2MD;
if (GetGCPCount() > 0)
{
oJP2MD.SetGCPs(GetGCPCount(), GetGCPs());
oJP2MD.SetSpatialRef(GetGCPSpatialRef());
}
else
{
const OGRSpatialReference *poSRS = GetSpatialRef();
if (poSRS != nullptr)
{
oJP2MD.SetSpatialRef(poSRS);
}
if (bGeoTransformValid)
{
oJP2MD.SetGeoTransform(adfGeoTransform);
}
}
const char *pszAreaOrPoint =
GetMetadataItem(GDALMD_AREA_OR_POINT);
oJP2MD.bPixelIsPoint =
pszAreaOrPoint != nullptr &&
EQUAL(pszAreaOrPoint, GDALMD_AOP_POINT);
if (!WriteIPRBox(this->fp_, this))
eErr = CE_Failure;