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gtiffdataset_write.cpp
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/******************************************************************************
*
* Project: GeoTIFF Driver
* Purpose: Write/set operations on GTiffDataset
* Author: Frank Warmerdam, warmerdam@pobox.com
*
******************************************************************************
* Copyright (c) 1998, 2002, Frank Warmerdam <warmerdam@pobox.com>
* Copyright (c) 2007-2015, Even Rouault <even dot rouault at spatialys dot com>
*
* SPDX-License-Identifier: MIT
****************************************************************************/
#include "gtiffdataset.h"
#include "gtiffrasterband.h"
#include "gtiffoddbitsband.h"
#include <cassert>
#include <cerrno>
#include <algorithm>
#include <cmath>
#include <limits>
#include <memory>
#include <mutex>
#include <set>
#include <string>
#include <tuple>
#include <utility>
#include "cpl_error.h"
#include "cpl_error_internal.h" // CPLErrorHandlerAccumulatorStruct
#include "cpl_float.h"
#include "cpl_md5.h"
#include "cpl_vsi.h"
#include "cpl_vsi_virtual.h"
#include "cpl_worker_thread_pool.h"
#include "fetchbufferdirectio.h"
#include "gdal_mdreader.h" // GDALWriteRPCTXTFile()
#include "gdal_priv_templates.hpp" // GDALIsValueInRange<>
#include "gdal_thread_pool.h" // GDALGetGlobalThreadPool()
#include "geovalues.h" // RasterPixelIsPoint
#include "gt_jpeg_copy.h"
#include "gt_overview.h" // GTIFFBuildOverviewMetadata()
#include "quant_table_md5sum.h"
#include "quant_table_md5sum_jpeg9e.h"
#include "tif_jxl.h"
#include "tifvsi.h"
#include "xtiffio.h"
#if LIFFLIB_VERSION > 20230908 || defined(INTERNAL_LIBTIFF)
/* libtiff < 4.6.1 doesn't generate a LERC mask for multi-band contig configuration */
#define LIBTIFF_MULTIBAND_LERC_NAN_OK
#endif
static const int knGTIFFJpegTablesModeDefault = JPEGTABLESMODE_QUANT;
static constexpr const char szPROFILE_BASELINE[] = "BASELINE";
static constexpr const char szPROFILE_GeoTIFF[] = "GeoTIFF";
static constexpr const char szPROFILE_GDALGeoTIFF[] = "GDALGeoTIFF";
// Due to libgeotiff/xtiff.c declaring TIFFTAG_GEOTIEPOINTS with field_readcount
// and field_writecount == -1 == TIFF_VARIABLE, we are limited to writing
// 65535 values in that tag. That could potentially be overcome by changing the tag
// declaration to using TIFF_VARIABLE2 where the count is a uint32_t.
constexpr int knMAX_GCP_COUNT =
static_cast<int>(std::numeric_limits<uint16_t>::max() / 6);
enum
{
ENDIANNESS_NATIVE,
ENDIANNESS_LITTLE,
ENDIANNESS_BIG
};
static signed char GTiffGetWebPLevel(CSLConstList papszOptions)
{
int nWebPLevel = DEFAULT_WEBP_LEVEL;
const char *pszValue = CSLFetchNameValue(papszOptions, "WEBP_LEVEL");
if (pszValue != nullptr)
{
nWebPLevel = atoi(pszValue);
if (!(nWebPLevel >= 1 && nWebPLevel <= 100))
{
CPLError(CE_Warning, CPLE_IllegalArg,
"WEBP_LEVEL=%s value not recognised, ignoring.", pszValue);
nWebPLevel = DEFAULT_WEBP_LEVEL;
}
}
return static_cast<signed char>(nWebPLevel);
}
static bool GTiffGetWebPLossless(CSLConstList papszOptions)
{
return CPLFetchBool(papszOptions, "WEBP_LOSSLESS", false);
}
static double GTiffGetLERCMaxZError(CSLConstList papszOptions)
{
return CPLAtof(CSLFetchNameValueDef(papszOptions, "MAX_Z_ERROR", "0.0"));
}
static double GTiffGetLERCMaxZErrorOverview(CSLConstList papszOptions)
{
return CPLAtof(CSLFetchNameValueDef(
papszOptions, "MAX_Z_ERROR_OVERVIEW",
CSLFetchNameValueDef(papszOptions, "MAX_Z_ERROR", "0.0")));
}
#if HAVE_JXL
static bool GTiffGetJXLLossless(CSLConstList papszOptions)
{
return CPLTestBool(
CSLFetchNameValueDef(papszOptions, "JXL_LOSSLESS", "TRUE"));
}
static uint32_t GTiffGetJXLEffort(CSLConstList papszOptions)
{
return atoi(CSLFetchNameValueDef(papszOptions, "JXL_EFFORT", "5"));
}
static float GTiffGetJXLDistance(CSLConstList papszOptions)
{
return static_cast<float>(
CPLAtof(CSLFetchNameValueDef(papszOptions, "JXL_DISTANCE", "1.0")));
}
static float GTiffGetJXLAlphaDistance(CSLConstList papszOptions)
{
return static_cast<float>(CPLAtof(
CSLFetchNameValueDef(papszOptions, "JXL_ALPHA_DISTANCE", "-1.0")));
}
#endif
/************************************************************************/
/* FillEmptyTiles() */
/************************************************************************/
CPLErr GTiffDataset::FillEmptyTiles()
{
/* -------------------------------------------------------------------- */
/* How many blocks are there in this file? */
/* -------------------------------------------------------------------- */
const int nBlockCount = m_nPlanarConfig == PLANARCONFIG_SEPARATE
? m_nBlocksPerBand * nBands
: m_nBlocksPerBand;
/* -------------------------------------------------------------------- */
/* Fetch block maps. */
/* -------------------------------------------------------------------- */
toff_t *panByteCounts = nullptr;
if (TIFFIsTiled(m_hTIFF))
TIFFGetField(m_hTIFF, TIFFTAG_TILEBYTECOUNTS, &panByteCounts);
else
TIFFGetField(m_hTIFF, TIFFTAG_STRIPBYTECOUNTS, &panByteCounts);
if (panByteCounts == nullptr)
{
// Got here with libtiff 3.9.3 and tiff_write_8 test.
ReportError(CE_Failure, CPLE_AppDefined,
"FillEmptyTiles() failed because panByteCounts == NULL");
return CE_Failure;
}
/* -------------------------------------------------------------------- */
/* Prepare a blank data buffer to write for uninitialized blocks. */
/* -------------------------------------------------------------------- */
const GPtrDiff_t nBlockBytes =
TIFFIsTiled(m_hTIFF) ? static_cast<GPtrDiff_t>(TIFFTileSize(m_hTIFF))
: static_cast<GPtrDiff_t>(TIFFStripSize(m_hTIFF));
GByte *pabyData = static_cast<GByte *>(VSI_CALLOC_VERBOSE(nBlockBytes, 1));
if (pabyData == nullptr)
{
return CE_Failure;
}
// Force tiles completely filled with the nodata value to be written.
m_bWriteEmptyTiles = true;
/* -------------------------------------------------------------------- */
/* If set, fill data buffer with no data value. */
/* -------------------------------------------------------------------- */
if ((m_bNoDataSet && m_dfNoDataValue != 0.0) ||
(m_bNoDataSetAsInt64 && m_nNoDataValueInt64 != 0) ||
(m_bNoDataSetAsUInt64 && m_nNoDataValueUInt64 != 0))
{
const GDALDataType eDataType = GetRasterBand(1)->GetRasterDataType();
const int nDataTypeSize = GDALGetDataTypeSizeBytes(eDataType);
if (nDataTypeSize &&
nDataTypeSize * 8 == static_cast<int>(m_nBitsPerSample))
{
if (m_bNoDataSetAsInt64)
{
GDALCopyWords64(&m_nNoDataValueInt64, GDT_Int64, 0, pabyData,
eDataType, nDataTypeSize,
nBlockBytes / nDataTypeSize);
}
else if (m_bNoDataSetAsUInt64)
{
GDALCopyWords64(&m_nNoDataValueUInt64, GDT_UInt64, 0, pabyData,
eDataType, nDataTypeSize,
nBlockBytes / nDataTypeSize);
}
else
{
double dfNoData = m_dfNoDataValue;
GDALCopyWords64(&dfNoData, GDT_Float64, 0, pabyData, eDataType,
nDataTypeSize, nBlockBytes / nDataTypeSize);
}
}
else if (nDataTypeSize)
{
// Handle non power-of-two depths.
// Ideally make a packed buffer, but that is a bit tedious,
// so use the normal I/O interfaces.
CPLFree(pabyData);
pabyData = static_cast<GByte *>(VSI_MALLOC3_VERBOSE(
m_nBlockXSize, m_nBlockYSize, nDataTypeSize));
if (pabyData == nullptr)
return CE_Failure;
if (m_bNoDataSetAsInt64)
{
GDALCopyWords64(&m_nNoDataValueInt64, GDT_Int64, 0, pabyData,
eDataType, nDataTypeSize,
static_cast<GPtrDiff_t>(m_nBlockXSize) *
m_nBlockYSize);
}
else if (m_bNoDataSetAsUInt64)
{
GDALCopyWords64(&m_nNoDataValueUInt64, GDT_UInt64, 0, pabyData,
eDataType, nDataTypeSize,
static_cast<GPtrDiff_t>(m_nBlockXSize) *
m_nBlockYSize);
}
else
{
GDALCopyWords64(&m_dfNoDataValue, GDT_Float64, 0, pabyData,
eDataType, nDataTypeSize,
static_cast<GPtrDiff_t>(m_nBlockXSize) *
m_nBlockYSize);
}
CPLErr eErr = CE_None;
for (int iBlock = 0; iBlock < nBlockCount; ++iBlock)
{
if (panByteCounts[iBlock] == 0)
{
if (m_nPlanarConfig == PLANARCONFIG_SEPARATE || nBands == 1)
{
if (GetRasterBand(1 + iBlock / m_nBlocksPerBand)
->WriteBlock((iBlock % m_nBlocksPerBand) %
m_nBlocksPerRow,
(iBlock % m_nBlocksPerBand) /
m_nBlocksPerRow,
pabyData) != CE_None)
{
eErr = CE_Failure;
}
}
else
{
// In contig case, don't directly call WriteBlock(), as
// it could cause useless decompression-recompression.
const int nXOff =
(iBlock % m_nBlocksPerRow) * m_nBlockXSize;
const int nYOff =
(iBlock / m_nBlocksPerRow) * m_nBlockYSize;
const int nXSize =
(nXOff + m_nBlockXSize <= nRasterXSize)
? m_nBlockXSize
: nRasterXSize - nXOff;
const int nYSize =
(nYOff + m_nBlockYSize <= nRasterYSize)
? m_nBlockYSize
: nRasterYSize - nYOff;
for (int iBand = 1; iBand <= nBands; ++iBand)
{
if (GetRasterBand(iBand)->RasterIO(
GF_Write, nXOff, nYOff, nXSize, nYSize,
pabyData, nXSize, nYSize, eDataType, 0, 0,
nullptr) != CE_None)
{
eErr = CE_Failure;
}
}
}
}
}
CPLFree(pabyData);
return eErr;
}
}
/* -------------------------------------------------------------------- */
/* When we must fill with zeroes, try to create non-sparse file */
/* w.r.t TIFF spec ... as a sparse file w.r.t filesystem, ie by */
/* seeking to end of file instead of writing zero blocks. */
/* -------------------------------------------------------------------- */
else if (m_nCompression == COMPRESSION_NONE && (m_nBitsPerSample % 8) == 0)
{
CPLErr eErr = CE_None;
// Only use libtiff to write the first sparse block to ensure that it
// will serialize offset and count arrays back to disk.
int nCountBlocksToZero = 0;
for (int iBlock = 0; iBlock < nBlockCount; ++iBlock)
{
if (panByteCounts[iBlock] == 0)
{
if (nCountBlocksToZero == 0)
{
const bool bWriteEmptyTilesBak = m_bWriteEmptyTiles;
m_bWriteEmptyTiles = true;
const bool bOK = WriteEncodedTileOrStrip(iBlock, pabyData,
FALSE) == CE_None;
m_bWriteEmptyTiles = bWriteEmptyTilesBak;
if (!bOK)
{
eErr = CE_Failure;
break;
}
}
nCountBlocksToZero++;
}
}
CPLFree(pabyData);
--nCountBlocksToZero;
// And then seek to end of file for other ones.
if (nCountBlocksToZero > 0)
{
toff_t *panByteOffsets = nullptr;
if (TIFFIsTiled(m_hTIFF))
TIFFGetField(m_hTIFF, TIFFTAG_TILEOFFSETS, &panByteOffsets);
else
TIFFGetField(m_hTIFF, TIFFTAG_STRIPOFFSETS, &panByteOffsets);
if (panByteOffsets == nullptr)
{
ReportError(
CE_Failure, CPLE_AppDefined,
"FillEmptyTiles() failed because panByteOffsets == NULL");
return CE_Failure;
}
VSILFILE *fpTIF = VSI_TIFFGetVSILFile(TIFFClientdata(m_hTIFF));
VSIFSeekL(fpTIF, 0, SEEK_END);
const vsi_l_offset nOffset = VSIFTellL(fpTIF);
vsi_l_offset iBlockToZero = 0;
for (int iBlock = 0; iBlock < nBlockCount; ++iBlock)
{
if (panByteCounts[iBlock] == 0)
{
panByteOffsets[iBlock] = static_cast<toff_t>(
nOffset + iBlockToZero * nBlockBytes);
panByteCounts[iBlock] = nBlockBytes;
iBlockToZero++;
}
}
CPLAssert(iBlockToZero ==
static_cast<vsi_l_offset>(nCountBlocksToZero));
if (VSIFTruncateL(fpTIF, nOffset + iBlockToZero * nBlockBytes) != 0)
{
eErr = CE_Failure;
ReportError(CE_Failure, CPLE_FileIO,
"Cannot initialize empty blocks");
}
}
return eErr;
}
/* -------------------------------------------------------------------- */
/* Check all blocks, writing out data for uninitialized blocks. */
/* -------------------------------------------------------------------- */
GByte *pabyRaw = nullptr;
vsi_l_offset nRawSize = 0;
CPLErr eErr = CE_None;
for (int iBlock = 0; iBlock < nBlockCount; ++iBlock)
{
if (panByteCounts[iBlock] == 0)
{
if (pabyRaw == nullptr)
{
if (WriteEncodedTileOrStrip(iBlock, pabyData, FALSE) != CE_None)
{
eErr = CE_Failure;
break;
}
vsi_l_offset nOffset = 0;
if (!IsBlockAvailable(iBlock, &nOffset, &nRawSize, nullptr))
break;
// When using compression, get back the compressed block
// so we can use the raw API to write it faster.
if (m_nCompression != COMPRESSION_NONE)
{
pabyRaw = static_cast<GByte *>(
VSI_MALLOC_VERBOSE(static_cast<size_t>(nRawSize)));
if (pabyRaw)
{
VSILFILE *fp =
VSI_TIFFGetVSILFile(TIFFClientdata(m_hTIFF));
const vsi_l_offset nCurOffset = VSIFTellL(fp);
VSIFSeekL(fp, nOffset, SEEK_SET);
VSIFReadL(pabyRaw, 1, static_cast<size_t>(nRawSize),
fp);
VSIFSeekL(fp, nCurOffset, SEEK_SET);
}
}
}
else
{
WriteRawStripOrTile(iBlock, pabyRaw,
static_cast<GPtrDiff_t>(nRawSize));
}
}
}
CPLFree(pabyData);
VSIFree(pabyRaw);
return eErr;
}
/************************************************************************/
/* HasOnlyNoData() */
/************************************************************************/
bool GTiffDataset::HasOnlyNoData(const void *pBuffer, int nWidth, int nHeight,
int nLineStride, int nComponents)
{
if (m_nSampleFormat == SAMPLEFORMAT_COMPLEXINT ||
m_nSampleFormat == SAMPLEFORMAT_COMPLEXIEEEFP)
return false;
if (m_bNoDataSetAsInt64 || m_bNoDataSetAsUInt64)
return false; // FIXME: over pessimistic
return GDALBufferHasOnlyNoData(
pBuffer, m_bNoDataSet ? m_dfNoDataValue : 0.0, nWidth, nHeight,
nLineStride, nComponents, m_nBitsPerSample,
m_nSampleFormat == SAMPLEFORMAT_UINT ? GSF_UNSIGNED_INT
: m_nSampleFormat == SAMPLEFORMAT_INT ? GSF_SIGNED_INT
: GSF_FLOATING_POINT);
}
/************************************************************************/
/* IsFirstPixelEqualToNoData() */
/************************************************************************/
inline bool GTiffDataset::IsFirstPixelEqualToNoData(const void *pBuffer)
{
const GDALDataType eDT = GetRasterBand(1)->GetRasterDataType();
const double dfEffectiveNoData = (m_bNoDataSet) ? m_dfNoDataValue : 0.0;
if (m_bNoDataSetAsInt64 || m_bNoDataSetAsUInt64)
return true; // FIXME: over pessimistic
if (m_nBitsPerSample == 8 ||
(m_nBitsPerSample < 8 && dfEffectiveNoData == 0))
{
if (eDT == GDT_Int8)
{
return GDALIsValueInRange<signed char>(dfEffectiveNoData) &&
*(static_cast<const signed char *>(pBuffer)) ==
static_cast<signed char>(dfEffectiveNoData);
}
return GDALIsValueInRange<GByte>(dfEffectiveNoData) &&
*(static_cast<const GByte *>(pBuffer)) ==
static_cast<GByte>(dfEffectiveNoData);
}
if (m_nBitsPerSample == 16 && eDT == GDT_UInt16)
{
return GDALIsValueInRange<GUInt16>(dfEffectiveNoData) &&
*(static_cast<const GUInt16 *>(pBuffer)) ==
static_cast<GUInt16>(dfEffectiveNoData);
}
if (m_nBitsPerSample == 16 && eDT == GDT_Int16)
{
return GDALIsValueInRange<GInt16>(dfEffectiveNoData) &&
*(static_cast<const GInt16 *>(pBuffer)) ==
static_cast<GInt16>(dfEffectiveNoData);
}
if (m_nBitsPerSample == 32 && eDT == GDT_UInt32)
{
return GDALIsValueInRange<GUInt32>(dfEffectiveNoData) &&
*(static_cast<const GUInt32 *>(pBuffer)) ==
static_cast<GUInt32>(dfEffectiveNoData);
}
if (m_nBitsPerSample == 32 && eDT == GDT_Int32)
{
return GDALIsValueInRange<GInt32>(dfEffectiveNoData) &&
*(static_cast<const GInt32 *>(pBuffer)) ==
static_cast<GInt32>(dfEffectiveNoData);
}
if (m_nBitsPerSample == 64 && eDT == GDT_UInt64)
{
return GDALIsValueInRange<std::uint64_t>(dfEffectiveNoData) &&
*(static_cast<const std::uint64_t *>(pBuffer)) ==
static_cast<std::uint64_t>(dfEffectiveNoData);
}
if (m_nBitsPerSample == 64 && eDT == GDT_Int64)
{
return GDALIsValueInRange<std::int64_t>(dfEffectiveNoData) &&
*(static_cast<const std::int64_t *>(pBuffer)) ==
static_cast<std::int64_t>(dfEffectiveNoData);
}
if (m_nBitsPerSample == 32 && eDT == GDT_Float32)
{
if (std::isnan(m_dfNoDataValue))
return CPL_TO_BOOL(
std::isnan(*(static_cast<const float *>(pBuffer))));
return GDALIsValueInRange<float>(dfEffectiveNoData) &&
*(static_cast<const float *>(pBuffer)) ==
static_cast<float>(dfEffectiveNoData);
}
if (m_nBitsPerSample == 64 && eDT == GDT_Float64)
{
if (std::isnan(dfEffectiveNoData))
return CPL_TO_BOOL(
std::isnan(*(static_cast<const double *>(pBuffer))));
return *(static_cast<const double *>(pBuffer)) == dfEffectiveNoData;
}
return false;
}
/************************************************************************/
/* WriteDealWithLercAndNan() */
/************************************************************************/
template <typename T>
void GTiffDataset::WriteDealWithLercAndNan(T *pBuffer, int nActualBlockWidth,
int nActualBlockHeight,
int nStrileHeight)
{
// This method does 2 things:
// - warn the user if he tries to write NaN values with libtiff < 4.6.1
// and multi-band PlanarConfig=Contig configuration
// - and in right-most and bottom-most tiles, replace non accessible
// pixel values by a safe one.
const auto fPaddingValue =
#if !defined(LIBTIFF_MULTIBAND_LERC_NAN_OK)
m_nPlanarConfig == PLANARCONFIG_CONTIG && nBands > 1
? 0
:
#endif
std::numeric_limits<T>::quiet_NaN();
const int nBandsPerStrile =
m_nPlanarConfig == PLANARCONFIG_CONTIG ? nBands : 1;
for (int j = 0; j < nActualBlockHeight; ++j)
{
#if !defined(LIBTIFF_MULTIBAND_LERC_NAN_OK)
static bool bHasWarned = false;
if (m_nPlanarConfig == PLANARCONFIG_CONTIG && nBands > 1 && !bHasWarned)
{
for (int i = 0; i < nActualBlockWidth * nBandsPerStrile; ++i)
{
if (std::isnan(
pBuffer[j * m_nBlockXSize * nBandsPerStrile + i]))
{
bHasWarned = true;
CPLError(CE_Warning, CPLE_AppDefined,
"libtiff < 4.6.1 does not handle properly NaN "
"values for multi-band PlanarConfig=Contig "
"configuration. As a workaround, you can set the "
"INTERLEAVE=BAND creation option.");
break;
}
}
}
#endif
for (int i = nActualBlockWidth * nBandsPerStrile;
i < m_nBlockXSize * nBandsPerStrile; ++i)
{
pBuffer[j * m_nBlockXSize * nBandsPerStrile + i] = fPaddingValue;
}
}
for (int j = nActualBlockHeight; j < nStrileHeight; ++j)
{
for (int i = 0; i < m_nBlockXSize * nBandsPerStrile; ++i)
{
pBuffer[j * m_nBlockXSize * nBandsPerStrile + i] = fPaddingValue;
}
}
}
/************************************************************************/
/* WriteEncodedTile() */
/************************************************************************/
bool GTiffDataset::WriteEncodedTile(uint32_t tile, GByte *pabyData,
int bPreserveDataBuffer)
{
const int iColumn = (tile % m_nBlocksPerBand) % m_nBlocksPerRow;
const int iRow = (tile % m_nBlocksPerBand) / m_nBlocksPerRow;
const int nActualBlockWidth = (iColumn == m_nBlocksPerRow - 1)
? nRasterXSize - iColumn * m_nBlockXSize
: m_nBlockXSize;
const int nActualBlockHeight = (iRow == m_nBlocksPerColumn - 1)
? nRasterYSize - iRow * m_nBlockYSize
: m_nBlockYSize;
/* -------------------------------------------------------------------- */
/* Don't write empty blocks in some cases. */
/* -------------------------------------------------------------------- */
if (!m_bWriteEmptyTiles && IsFirstPixelEqualToNoData(pabyData))
{
if (!IsBlockAvailable(tile, nullptr, nullptr, nullptr))
{
const int nComponents =
m_nPlanarConfig == PLANARCONFIG_CONTIG ? nBands : 1;
if (HasOnlyNoData(pabyData, nActualBlockWidth, nActualBlockHeight,
m_nBlockXSize, nComponents))
{
return true;
}
}
}
// Is this a partial right edge or bottom edge tile?
const bool bPartialTile = (nActualBlockWidth < m_nBlockXSize) ||
(nActualBlockHeight < m_nBlockYSize);
const bool bIsLercFloatingPoint =
m_nCompression == COMPRESSION_LERC &&
(GetRasterBand(1)->GetRasterDataType() == GDT_Float32 ||
GetRasterBand(1)->GetRasterDataType() == GDT_Float64);
// Do we need to spread edge values right or down for a partial
// JPEG encoded tile? We do this to avoid edge artifacts.
// We also need to be careful with LERC and NaN values
const bool bNeedTempBuffer =
bPartialTile &&
(m_nCompression == COMPRESSION_JPEG || bIsLercFloatingPoint);
// If we need to fill out the tile, or if we want to prevent
// TIFFWriteEncodedTile from altering the buffer as part of
// byte swapping the data on write then we will need a temporary
// working buffer. If not, we can just do a direct write.
const GPtrDiff_t cc = static_cast<GPtrDiff_t>(TIFFTileSize(m_hTIFF));
if (bPreserveDataBuffer &&
(TIFFIsByteSwapped(m_hTIFF) || bNeedTempBuffer || m_panMaskOffsetLsb))
{
if (m_pabyTempWriteBuffer == nullptr)
{
m_pabyTempWriteBuffer = CPLMalloc(cc);
}
memcpy(m_pabyTempWriteBuffer, pabyData, cc);
pabyData = static_cast<GByte *>(m_pabyTempWriteBuffer);
}
// Perform tile fill if needed.
// TODO: we should also handle the case of nBitsPerSample == 12
// but this is more involved.
if (bPartialTile && m_nCompression == COMPRESSION_JPEG &&
m_nBitsPerSample == 8)
{
const int nComponents =
m_nPlanarConfig == PLANARCONFIG_CONTIG ? nBands : 1;
CPLDebug("GTiff", "Filling out jpeg edge tile on write.");
const int nRightPixelsToFill =
iColumn == m_nBlocksPerRow - 1
? m_nBlockXSize * (iColumn + 1) - nRasterXSize
: 0;
const int nBottomPixelsToFill =
iRow == m_nBlocksPerColumn - 1
? m_nBlockYSize * (iRow + 1) - nRasterYSize
: 0;
// Fill out to the right.
const int iSrcX = m_nBlockXSize - nRightPixelsToFill - 1;
for (int iX = iSrcX + 1; iX < m_nBlockXSize; ++iX)
{
for (int iY = 0; iY < m_nBlockYSize; ++iY)
{
memcpy(pabyData +
(static_cast<GPtrDiff_t>(m_nBlockXSize) * iY + iX) *
nComponents,
pabyData + (static_cast<GPtrDiff_t>(m_nBlockXSize) * iY +
iSrcX) *
nComponents,
nComponents);
}
}
// Now fill out the bottom.
const int iSrcY = m_nBlockYSize - nBottomPixelsToFill - 1;
for (int iY = iSrcY + 1; iY < m_nBlockYSize; ++iY)
{
memcpy(pabyData + static_cast<GPtrDiff_t>(m_nBlockXSize) *
nComponents * iY,
pabyData + static_cast<GPtrDiff_t>(m_nBlockXSize) *
nComponents * iSrcY,
static_cast<GPtrDiff_t>(m_nBlockXSize) * nComponents);
}
}
if (bIsLercFloatingPoint &&
(bPartialTile
#if !defined(LIBTIFF_MULTIBAND_LERC_NAN_OK)
/* libtiff < 4.6.1 doesn't generate a LERC mask for multi-band contig configuration */
|| (m_nPlanarConfig == PLANARCONFIG_CONTIG && nBands > 1)
#endif
))
{
if (GetRasterBand(1)->GetRasterDataType() == GDT_Float32)
WriteDealWithLercAndNan(reinterpret_cast<float *>(pabyData),
nActualBlockWidth, nActualBlockHeight,
m_nBlockYSize);
else
WriteDealWithLercAndNan(reinterpret_cast<double *>(pabyData),
nActualBlockWidth, nActualBlockHeight,
m_nBlockYSize);
}
if (m_panMaskOffsetLsb)
{
const int iBand = m_nPlanarConfig == PLANARCONFIG_SEPARATE
? static_cast<int>(tile) / m_nBlocksPerBand
: -1;
DiscardLsb(pabyData, cc, iBand);
}
if (m_bStreamingOut)
{
if (tile != static_cast<uint32_t>(m_nLastWrittenBlockId + 1))
{
ReportError(CE_Failure, CPLE_NotSupported,
"Attempt to write block %d whereas %d was expected",
tile, m_nLastWrittenBlockId + 1);
return false;
}
if (static_cast<GPtrDiff_t>(VSIFWriteL(pabyData, 1, cc, m_fpToWrite)) !=
cc)
{
ReportError(CE_Failure, CPLE_FileIO,
"Could not write " CPL_FRMT_GUIB " bytes",
static_cast<GUIntBig>(cc));
return false;
}
m_nLastWrittenBlockId = tile;
return true;
}
/* -------------------------------------------------------------------- */
/* Should we do compression in a worker thread ? */
/* -------------------------------------------------------------------- */
if (SubmitCompressionJob(tile, pabyData, cc, m_nBlockYSize))
return true;
return TIFFWriteEncodedTile(m_hTIFF, tile, pabyData, cc) == cc;
}
/************************************************************************/
/* WriteEncodedStrip() */
/************************************************************************/
bool GTiffDataset::WriteEncodedStrip(uint32_t strip, GByte *pabyData,
int bPreserveDataBuffer)
{
GPtrDiff_t cc = static_cast<GPtrDiff_t>(TIFFStripSize(m_hTIFF));
const auto ccFull = cc;
/* -------------------------------------------------------------------- */
/* If this is the last strip in the image, and is partial, then */
/* we need to trim the number of scanlines written to the */
/* amount of valid data we have. (#2748) */
/* -------------------------------------------------------------------- */
const int nStripWithinBand = strip % m_nBlocksPerBand;
int nStripHeight = m_nRowsPerStrip;
if (nStripWithinBand * nStripHeight > GetRasterYSize() - nStripHeight)
{
nStripHeight = GetRasterYSize() - nStripWithinBand * m_nRowsPerStrip;
cc = (cc / m_nRowsPerStrip) * nStripHeight;
CPLDebug("GTiff",
"Adjusted bytes to write from " CPL_FRMT_GUIB
" to " CPL_FRMT_GUIB ".",
static_cast<GUIntBig>(TIFFStripSize(m_hTIFF)),
static_cast<GUIntBig>(cc));
}
/* -------------------------------------------------------------------- */
/* Don't write empty blocks in some cases. */
/* -------------------------------------------------------------------- */
if (!m_bWriteEmptyTiles && IsFirstPixelEqualToNoData(pabyData))
{
if (!IsBlockAvailable(strip, nullptr, nullptr, nullptr))
{
const int nComponents =
m_nPlanarConfig == PLANARCONFIG_CONTIG ? nBands : 1;
if (HasOnlyNoData(pabyData, m_nBlockXSize, nStripHeight,
m_nBlockXSize, nComponents))
{
return true;
}
}
}
/* -------------------------------------------------------------------- */
/* TIFFWriteEncodedStrip can alter the passed buffer if */
/* byte-swapping is necessary so we use a temporary buffer */
/* before calling it. */
/* -------------------------------------------------------------------- */
if (bPreserveDataBuffer &&
(TIFFIsByteSwapped(m_hTIFF) || m_panMaskOffsetLsb))
{
if (m_pabyTempWriteBuffer == nullptr)
{
m_pabyTempWriteBuffer = CPLMalloc(ccFull);
}
memcpy(m_pabyTempWriteBuffer, pabyData, cc);
pabyData = static_cast<GByte *>(m_pabyTempWriteBuffer);
}
#if !defined(LIBTIFF_MULTIBAND_LERC_NAN_OK)
const bool bIsLercFloatingPoint =
m_nCompression == COMPRESSION_LERC &&
(GetRasterBand(1)->GetRasterDataType() == GDT_Float32 ||
GetRasterBand(1)->GetRasterDataType() == GDT_Float64);
if (bIsLercFloatingPoint &&
/* libtiff < 4.6.1 doesn't generate a LERC mask for multi-band contig configuration */
m_nPlanarConfig == PLANARCONFIG_CONTIG && nBands > 1)
{
if (GetRasterBand(1)->GetRasterDataType() == GDT_Float32)
WriteDealWithLercAndNan(reinterpret_cast<float *>(pabyData),
m_nBlockXSize, nStripHeight, nStripHeight);
else
WriteDealWithLercAndNan(reinterpret_cast<double *>(pabyData),
m_nBlockXSize, nStripHeight, nStripHeight);
}
#endif
if (m_panMaskOffsetLsb)
{
int iBand = m_nPlanarConfig == PLANARCONFIG_SEPARATE
? static_cast<int>(strip) / m_nBlocksPerBand
: -1;
DiscardLsb(pabyData, cc, iBand);
}
if (m_bStreamingOut)
{
if (strip != static_cast<uint32_t>(m_nLastWrittenBlockId + 1))
{
ReportError(CE_Failure, CPLE_NotSupported,
"Attempt to write block %d whereas %d was expected",
strip, m_nLastWrittenBlockId + 1);
return false;
}
if (static_cast<GPtrDiff_t>(VSIFWriteL(pabyData, 1, cc, m_fpToWrite)) !=
cc)
{
ReportError(CE_Failure, CPLE_FileIO,
"Could not write " CPL_FRMT_GUIB " bytes",
static_cast<GUIntBig>(cc));
return false;
}
m_nLastWrittenBlockId = strip;
return true;
}
/* -------------------------------------------------------------------- */
/* Should we do compression in a worker thread ? */
/* -------------------------------------------------------------------- */
if (SubmitCompressionJob(strip, pabyData, cc, nStripHeight))
return true;
return TIFFWriteEncodedStrip(m_hTIFF, strip, pabyData, cc) == cc;
}
/************************************************************************/
/* InitCompressionThreads() */
/************************************************************************/
void GTiffDataset::InitCompressionThreads(bool bUpdateMode,
CSLConstList papszOptions)
{
// Raster == tile, then no need for threads
if (m_nBlockXSize == nRasterXSize && m_nBlockYSize == nRasterYSize)
return;
const char *pszValue = CSLFetchNameValue(papszOptions, "NUM_THREADS");
if (pszValue == nullptr)
pszValue = CPLGetConfigOption("GDAL_NUM_THREADS", nullptr);
if (pszValue)
{
int nThreads =
EQUAL(pszValue, "ALL_CPUS") ? CPLGetNumCPUs() : atoi(pszValue);
if (nThreads > 1024)
nThreads = 1024; // to please Coverity
if (nThreads > 1)
{
if ((bUpdateMode && m_nCompression != COMPRESSION_NONE) ||
(nBands >= 1 && IsMultiThreadedReadCompatible()))
{
CPLDebug("GTiff",
"Using up to %d threads for compression/decompression",
nThreads);
m_poThreadPool = GDALGetGlobalThreadPool(nThreads);
if (bUpdateMode && m_poThreadPool)
m_poCompressQueue = m_poThreadPool->CreateJobQueue();
if (m_poCompressQueue != nullptr)
{
// Add a margin of an extra job w.r.t thread number
// so as to optimize compression time (enables the main
// thread to do boring I/O while all CPUs are working).
m_asCompressionJobs.resize(nThreads + 1);
memset(&m_asCompressionJobs[0], 0,
m_asCompressionJobs.size() *
sizeof(GTiffCompressionJob));
for (int i = 0;
i < static_cast<int>(m_asCompressionJobs.size()); ++i)
{
m_asCompressionJobs[i].pszTmpFilename =
CPLStrdup(VSIMemGenerateHiddenFilename(
CPLSPrintf("thread_job_%d.tif", i)));
m_asCompressionJobs[i].nStripOrTile = -1;
}
// This is kind of a hack, but basically using
// TIFFWriteRawStrip/Tile and then TIFFReadEncodedStrip/Tile
// does not work on a newly created file, because
// TIFF_MYBUFFER is not set in tif_flags
// (if using TIFFWriteEncodedStrip/Tile first,
// TIFFWriteBufferSetup() is automatically called).
// This should likely rather fixed in libtiff itself.
CPL_IGNORE_RET_VAL(
TIFFWriteBufferSetup(m_hTIFF, nullptr, -1));
}
}
}
else if (nThreads < 0 ||
(!EQUAL(pszValue, "0") && !EQUAL(pszValue, "1") &&
!EQUAL(pszValue, "ALL_CPUS")))
{
ReportError(CE_Warning, CPLE_AppDefined,
"Invalid value for NUM_THREADS: %s", pszValue);
}
}
}
/************************************************************************/
/* ThreadCompressionFunc() */
/************************************************************************/
void GTiffDataset::ThreadCompressionFunc(void *pData)
{
GTiffCompressionJob *psJob = static_cast<GTiffCompressionJob *>(pData);
GTiffDataset *poDS = psJob->poDS;
VSILFILE *fpTmp = VSIFOpenL(psJob->pszTmpFilename, "wb+");
TIFF *hTIFFTmp = VSI_TIFFOpen(
psJob->pszTmpFilename, psJob->bTIFFIsBigEndian ? "wb+" : "wl+", fpTmp);
CPLAssert(hTIFFTmp != nullptr);
TIFFSetField(hTIFFTmp, TIFFTAG_IMAGEWIDTH, poDS->m_nBlockXSize);
TIFFSetField(hTIFFTmp, TIFFTAG_IMAGELENGTH, psJob->nHeight);
TIFFSetField(hTIFFTmp, TIFFTAG_BITSPERSAMPLE, poDS->m_nBitsPerSample);
TIFFSetField(hTIFFTmp, TIFFTAG_COMPRESSION, poDS->m_nCompression);
TIFFSetField(hTIFFTmp, TIFFTAG_PHOTOMETRIC, poDS->m_nPhotometric);
TIFFSetField(hTIFFTmp, TIFFTAG_SAMPLEFORMAT, poDS->m_nSampleFormat);
TIFFSetField(hTIFFTmp, TIFFTAG_SAMPLESPERPIXEL, poDS->m_nSamplesPerPixel);
TIFFSetField(hTIFFTmp, TIFFTAG_ROWSPERSTRIP, poDS->m_nBlockYSize);
TIFFSetField(hTIFFTmp, TIFFTAG_PLANARCONFIG, poDS->m_nPlanarConfig);
if (psJob->nPredictor != PREDICTOR_NONE)
TIFFSetField(hTIFFTmp, TIFFTAG_PREDICTOR, psJob->nPredictor);
if (poDS->m_nCompression == COMPRESSION_LERC)
{
TIFFSetField(hTIFFTmp, TIFFTAG_LERC_PARAMETERS, 2,
poDS->m_anLercAddCompressionAndVersion);
}
if (psJob->nExtraSampleCount)
{
TIFFSetField(hTIFFTmp, TIFFTAG_EXTRASAMPLES, psJob->nExtraSampleCount,
psJob->pExtraSamples);
}
poDS->RestoreVolatileParameters(hTIFFTmp);
bool bOK = TIFFWriteEncodedStrip(hTIFFTmp, 0, psJob->pabyBuffer,
psJob->nBufferSize) == psJob->nBufferSize;