15885686134

Committed 25 Jun 2025 07:44PM UTC coverage: 71.084%. Remained the same

Build # 15885686134

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github

Committed by

rouault

Commit Message

gdal_priv.h: fix C++11 compatibility

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27.78

/ogr/ogrsf_frmts/sqlite/rasterlite2.cpp

/******************************************************************************
 *
 * Project:  OpenGIS Simple Features Reference Implementation
 * Purpose:  Implements RasterLite2 support class.
 * Author:   Even Rouault <even.rouault at spatialys.com>
 *
 ******************************************************************************
 *
 * CREDITS: The RasterLite2 module has been completely funded by:
 * Regione Toscana - Settore Sistema Informativo Territoriale ed
 * Ambientale (GDAL/RasterLite2 driver)
 * CIG: 644544015A
 *
 ******************************************************************************
 * Copyright (c) 2016, Even Rouault <even.rouault at spatialys.com>
 *
 * SPDX-License-Identifier: MIT
 ****************************************************************************/

#include "cpl_port.h"
#include "ogr_sqlite.h"
#include "ogrsqliteutility.h"
#include "rasterlite2_header.h"

#include <cstring>
#include <algorithm>

#include "cpl_error.h"
#include "cpl_string.h"

#ifdef HAVE_RASTERLITE2

static CPLString EscapeNameAndQuoteIfNeeded(const char *pszName)
{
    if (strchr(pszName, '"') == nullptr && strchr(pszName, ':') == nullptr)
        return pszName;
    return '"' + SQLEscapeName(pszName) + '"';
}

#endif

/************************************************************************/
/*                            OpenRaster()                              */
/************************************************************************/

bool OGRSQLiteDataSource::OpenRaster()
{
#ifdef HAVE_RASTERLITE2
    /* -------------------------------------------------------------------- */
    /*      Detect RasterLite2 coverages.                                   */
    /* -------------------------------------------------------------------- */
    char **papszResults = nullptr;
    int nRowCount = 0, nColCount = 0;
    int rc = sqlite3_get_table(hDB,
                               "SELECT name FROM sqlite_master WHERE "
                               "type = 'table' AND name = 'raster_coverages'",
                               &papszResults, &nRowCount, &nColCount, nullptr);
    sqlite3_free_table(papszResults);
    if (!(rc == SQLITE_OK && nRowCount == 1))
    {
        return false;
    }

    papszResults = nullptr;
    nRowCount = 0;
    nColCount = 0;
    rc = sqlite3_get_table(hDB,
                           "SELECT coverage_name, title, abstract "
                           "FROM raster_coverages "
                           "LIMIT 10000",
                           &papszResults, &nRowCount, &nColCount, nullptr);
    if (!(rc == SQLITE_OK && nRowCount > 0))
    {
        sqlite3_free_table(papszResults);
        return false;
    }
    for (int i = 0; i < nRowCount; ++i)
    {
        const char *const *papszRow = papszResults + i * 3 + 3;
        const char *pszCoverageName = papszRow[0];
        const char *pszTitle = papszRow[1];
        const char *pszAbstract = papszRow[2];
        if (pszCoverageName != nullptr)
        {
            rl2CoveragePtr cvg =
                rl2_create_coverage_from_dbms(hDB, nullptr, pszCoverageName);
            if (cvg != nullptr)
            {
                const int nIdx = m_aosSubDatasets.size() / 2 + 1;
                m_aosSubDatasets.AddNameValue(
                    CPLSPrintf("SUBDATASET_%d_NAME", nIdx),
                    CPLSPrintf(
                        "RASTERLITE2:%s:%s",
                        EscapeNameAndQuoteIfNeeded(m_pszFilename).c_str(),
                        EscapeNameAndQuoteIfNeeded(pszCoverageName).c_str()));
                CPLString osDesc("Coverage ");
                osDesc += pszCoverageName;
                if (pszTitle != nullptr && pszTitle[0] != '\0' &&
                    !EQUAL(pszTitle, "*** missing Title ***"))
                {
                    osDesc += ", title = ";
                    osDesc += pszTitle;
                }
                if (pszAbstract != nullptr && pszAbstract[0] != '\0' &&
                    !EQUAL(pszAbstract, "*** missing Abstract ***"))
                {
                    osDesc += ", abstract = ";
                    osDesc += pszAbstract;
                }
                m_aosSubDatasets.AddNameValue(
                    CPLSPrintf("SUBDATASET_%d_DESC", nIdx), osDesc.c_str());

                rl2_destroy_coverage(cvg);
            }
        }
    }
    sqlite3_free_table(papszResults);

    if (m_aosSubDatasets.size() == 2)
    {
        const char *pszSubDSName =
            m_aosSubDatasets.FetchNameValue("SUBDATASET_1_NAME");
        if (pszSubDSName)
        {
            return OpenRasterSubDataset(pszSubDSName);
        }
    }

    return !m_aosSubDatasets.empty();
#else
    return false;
#endif
}

/************************************************************************/
/*                        OpenRasterSubDataset()                        */
/************************************************************************/

bool OGRSQLiteDataSource::OpenRasterSubDataset(
    CPL_UNUSED const char *pszConnectionId)
{
#ifdef HAVE_RASTERLITE2
    if (!STARTS_WITH_CI(pszConnectionId, "RASTERLITE2:"))
        return false;

    char **papszTokens =
        CSLTokenizeString2(pszConnectionId, ":", CSLT_HONOURSTRINGS);
    if (CSLCount(papszTokens) < 3)
    {
        CSLDestroy(papszTokens);
        return false;
    }

    m_aosSubDatasets.Clear();

    m_osCoverageName = SQLUnescape(papszTokens[2]);
    m_nSectionId =
        (CSLCount(papszTokens) >= 4) ? CPLAtoGIntBig(papszTokens[3]) : -1;

    CSLDestroy(papszTokens);

    m_pRL2Coverage =
        rl2_create_coverage_from_dbms(hDB, nullptr, m_osCoverageName);
    if (m_pRL2Coverage == nullptr)
    {
        CPLError(CE_Failure, CPLE_AppDefined, "Invalid coverage: %s",
                 m_osCoverageName.c_str());
        return false;
    }

    bool bSingleSection = false;
    if (m_nSectionId < 0)
    {
        CPLString osSectionTableName(
            CPLSPrintf("%s_sections", m_osCoverageName.c_str()));
        int nRowCount2 = 0;
        int nColCount2 = 0;
        char **papszResults2 = nullptr;
        char *pszSQL =
            sqlite3_mprintf("SELECT section_id, section_name FROM \"%w\" "
                            "ORDER BY section_id "
                            "LIMIT 1000000",
                            osSectionTableName.c_str());
        int rc = sqlite3_get_table(hDB, pszSQL, &papszResults2, &nRowCount2,
                                   &nColCount2, nullptr);
        sqlite3_free(pszSQL);
        if (rc == SQLITE_OK)
        {
            for (int j = 0; j < nRowCount2; ++j)
            {
                const char *const *papszRow2 = papszResults2 + j * 2 + 2;
                const char *pszSectionId = papszRow2[0];
                const char *pszSectionName = papszRow2[1];
                if (pszSectionName != nullptr && pszSectionId != nullptr)
                {
                    if (nRowCount2 > 1)
                    {
                        const int nIdx = m_aosSubDatasets.size() / 2 + 1;
                        m_aosSubDatasets.AddNameValue(
                            CPLSPrintf("SUBDATASET_%d_NAME", nIdx),
                            CPLSPrintf(
                                "RASTERLITE2:%s:%s:%s:%s",
                                EscapeNameAndQuoteIfNeeded(m_pszFilename)
                                    .c_str(),
                                EscapeNameAndQuoteIfNeeded(m_osCoverageName)
                                    .c_str(),
                                pszSectionId,
                                EscapeNameAndQuoteIfNeeded(pszSectionName)
                                    .c_str()));
                        m_aosSubDatasets.AddNameValue(
                            CPLSPrintf("SUBDATASET_%d_DESC", nIdx),
                            CPLSPrintf("Coverage %s, section %s / %s",
                                       m_osCoverageName.c_str(), pszSectionName,
                                       pszSectionId));
                    }
                    else
                    {
                        m_nSectionId = CPLAtoGIntBig(pszSectionId);
                        bSingleSection = true;
                    }
                }
            }
        }
        sqlite3_free_table(papszResults2);
    }

    double dfXRes = 0.0;
    double dfYRes = 0.0;

    double dfMinX = 0.0;
    double dfMinY = 0.0;
    double dfMaxX = 0.0;
    double dfMaxY = 0.0;
    unsigned int nWidth = 0;
    unsigned int nHeight = 0;

    // Get extent and resolution
    if (m_nSectionId >= 0)
    {
        int ret = rl2_resolve_base_resolution_from_dbms(
            hDB, nullptr, m_osCoverageName,
            TRUE,  // by_section
            m_nSectionId, &dfXRes, &dfYRes);
        if (ret != RL2_OK)
        {
            CPLError(CE_Failure, CPLE_AppDefined,
                     "rl2_resolve_base_resolution_from_dbms() failed / "
                     "Invalid section: " CPL_FRMT_GIB,
                     m_nSectionId);
            return false;
        }

        ret = rl2_resolve_full_section_from_dbms(
            hDB, nullptr, m_osCoverageName, m_nSectionId, dfXRes, dfYRes,
            &dfMinX, &dfMinY, &dfMaxX, &dfMaxY, &nWidth, &nHeight);
        if (ret != RL2_OK || nWidth == 0 || nWidth > INT_MAX || nHeight == 0 ||
            nHeight > INT_MAX)
        {
            CPLError(CE_Failure, CPLE_AppDefined,
                     "rl2_resolve_full_section_from_dbms() failed / "
                     "Invalid section: " CPL_FRMT_GIB,
                     m_nSectionId);
            return false;
        }
    }
    else
    {
        rl2_get_coverage_resolution(m_pRL2Coverage, &dfXRes, &dfYRes);

        char *pszSQL = sqlite3_mprintf(
            "SELECT extent_minx, extent_miny, extent_maxx, extent_maxy "
            "FROM raster_coverages WHERE "
            "Lower(coverage_name) = Lower('%q') "
            "LIMIT 1",
            m_osCoverageName.c_str());
        char **papszResults = nullptr;
        int nRowCount = 0;
        int nColCount = 0;
        int rc = sqlite3_get_table(hDB, pszSQL, &papszResults, &nRowCount,
                                   &nColCount, nullptr);
        sqlite3_free(pszSQL);
        if (rc == SQLITE_OK)
        {
            if (nRowCount == 1)
            {
                const char *pszMinX = papszResults[4 + 0];
                const char *pszMinY = papszResults[4 + 1];
                const char *pszMaxX = papszResults[4 + 2];
                const char *pszMaxY = papszResults[4 + 3];
                if (pszMinX != nullptr && pszMinY != nullptr &&
                    pszMaxX != nullptr && pszMaxY != nullptr)
                {
                    dfMinX = CPLAtof(pszMinX);
                    dfMinY = CPLAtof(pszMinY);
                    dfMaxX = CPLAtof(pszMaxX);
                    dfMaxY = CPLAtof(pszMaxY);
                }
            }
            sqlite3_free_table(papszResults);
        }
        double dfWidth = 0.5 + (dfMaxX - dfMinX) / dfXRes;
        double dfHeight = 0.5 + (dfMaxY - dfMinY) / dfYRes;
        if (dfWidth <= 0.5 || dfHeight <= 0.5 || dfWidth > INT_MAX ||
            dfHeight > INT_MAX)
        {
            CPLError(CE_Failure, CPLE_AppDefined, "Invalid dimensions");
            return false;
        }
        nWidth = static_cast<int>(dfWidth);
        nHeight = static_cast<int>(dfHeight);
    }

    // Compute dimension and geotransform
    nRasterXSize = static_cast<int>(nWidth);
    nRasterYSize = static_cast<int>(nHeight);
    m_bGeoTransformValid = true;
    m_gt[0] = dfMinX;
    m_gt[1] = (dfMaxX - dfMinX) / nRasterXSize;
    m_gt[2] = 0.0;
    m_gt[3] = dfMaxY;
    m_gt[4] = 0.0;
    m_gt[5] = -(dfMaxY - dfMinY) / nRasterYSize;

    // Get SRS
    int nSRID = 0;
    if (rl2_get_coverage_srid(m_pRL2Coverage, &nSRID) == RL2_OK)
    {
        OGRSpatialReference *poSRS = FetchSRS(nSRID);
        if (poSRS != nullptr)
        {
            m_oSRS = *poSRS;
            m_oSRS.SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER);
        }
    }

    // Get pixel information and number of bands
    unsigned char nSampleType = 0;
    unsigned char nPixelType = 0;
    unsigned char l_nBands = 0;
    rl2_get_coverage_type(m_pRL2Coverage, &nSampleType, &nPixelType, &l_nBands);
    if (!GDALCheckBandCount(l_nBands, FALSE))
        return false;
    int nBits = 0;
    GDALDataType eDT = GDT_Unknown;
    switch (nSampleType)
    {
        default:
        case RL2_SAMPLE_UNKNOWN:
        {
            CPLError(CE_Failure, CPLE_AppDefined, "Unknown sample type");
            return false;
        }
        case RL2_SAMPLE_1_BIT:
        {
            if (nPixelType == RL2_PIXEL_MONOCHROME)
            {
                m_bPromote1BitAs8Bit =
                    CPLFetchBool(papszOpenOptions, "1BIT_AS_8BIT", true);
            }
            nBits = 1;
            eDT = GDT_Byte;
            break;
        }
        case RL2_SAMPLE_2_BIT:
        {
            nBits = 2;
            eDT = GDT_Byte;
            break;
        }
        case RL2_SAMPLE_4_BIT:
        {
            nBits = 4;
            eDT = GDT_Byte;
            break;
        }
        case RL2_SAMPLE_INT8:
        {
            nBits = 8;
            eDT = GDT_Int8;
            break;
        }
        case RL2_SAMPLE_UINT8:
        {
            nBits = 8;
            eDT = GDT_Byte;
            break;
        }
        case RL2_SAMPLE_INT16:
        {
            nBits = 16;
            eDT = GDT_Int16;
            break;
        }
        case RL2_SAMPLE_UINT16:
        {
            nBits = 16;
            eDT = GDT_UInt16;
            break;
        }
        case RL2_SAMPLE_INT32:
        {
            nBits = 32;
            eDT = GDT_Int32;
            break;
        }
        case RL2_SAMPLE_UINT32:
        {
            nBits = 32;
            eDT = GDT_UInt32;
            break;
        }
        case RL2_SAMPLE_FLOAT:
        {
            nBits = 32;
            eDT = GDT_Float32;
            break;
        }
        case RL2_SAMPLE_DOUBLE:
        {
            nBits = 64;
            eDT = GDT_Float64;
            break;
        }
    }

    // Get information about compression (informative)
    unsigned char nCompression = 0;
    int nQuality = 0;
    rl2_get_coverage_compression(m_pRL2Coverage, &nCompression, &nQuality);
    const char *pszCompression = nullptr;
    switch (nCompression)
    {
        case RL2_COMPRESSION_DEFLATE:
        case RL2_COMPRESSION_DEFLATE_NO:
            pszCompression = "DEFLATE";
            break;
        case RL2_COMPRESSION_LZMA:
        case RL2_COMPRESSION_LZMA_NO:
            pszCompression = "LZMA";
            break;
        case RL2_COMPRESSION_GIF:
            pszCompression = "GIF";
            break;
        case RL2_COMPRESSION_JPEG:
            pszCompression = "JPEG";
            break;
        case RL2_COMPRESSION_PNG:
            pszCompression = "PNG";
            break;
        case RL2_COMPRESSION_LOSSY_WEBP:
            pszCompression = "WEBP";
            break;
        case RL2_COMPRESSION_LOSSLESS_WEBP:
            pszCompression = "WEBP_LOSSLESS";
            break;
        case RL2_COMPRESSION_CCITTFAX3:
            pszCompression = "CCITTFAX3";
            break;
        case RL2_COMPRESSION_CCITTFAX4:
            pszCompression = "CCITTFAX4";
            break;
        case RL2_COMPRESSION_LZW:
            pszCompression = "LZW";
            break;
        case RL2_COMPRESSION_LOSSY_JP2:
            pszCompression = "JPEG2000";
            break;
        case RL2_COMPRESSION_LOSSLESS_JP2:
            pszCompression = "JPEG2000_LOSSLESS";
            break;
        default:
            break;
    }

    if (pszCompression != nullptr)
    {
        GDALDataset::SetMetadataItem("COMPRESSION", pszCompression,
                                     "IMAGE_STRUCTURE");
    }

    if (nQuality != 0 && (nCompression == RL2_COMPRESSION_JPEG ||
                          nCompression == RL2_COMPRESSION_LOSSY_WEBP ||
                          nCompression == RL2_COMPRESSION_LOSSY_JP2))
    {
        GDALDataset::SetMetadataItem("QUALITY", CPLSPrintf("%d", nQuality),
                                     "IMAGE_STRUCTURE");
    }

    // Get tile dimensions
    unsigned int nTileWidth = 0;
    unsigned int nTileHeight = 0;
    rl2_get_coverage_tile_size(m_pRL2Coverage, &nTileWidth, &nTileHeight);
    if (nTileWidth == 0 || nTileHeight == 0 || nTileWidth > INT_MAX ||
        nTileHeight > INT_MAX)
    {
        CPLError(CE_Failure, CPLE_AppDefined, "Invalid block size");
        return false;
    }
    const int nBlockXSize = static_cast<int>(nTileWidth);
    const int nBlockYSize = static_cast<int>(nTileHeight);

    // Fetch nodata values
    std::vector<double> adfNoDataValues;
    rl2PixelPtr noDataPtr = rl2_get_coverage_no_data(m_pRL2Coverage);
    if (noDataPtr != nullptr)
    {
        unsigned char noDataSampleType = 0;
        unsigned char noDataPixelType = 0;
        unsigned char noDataBands = 0;
        if (rl2_get_pixel_type(noDataPtr, &noDataSampleType, &noDataPixelType,
                               &noDataBands) == RL2_OK &&
            noDataSampleType == nSampleType && noDataPixelType == nPixelType &&
            noDataBands == l_nBands)
        {
            for (int i = 0; i < l_nBands; ++i)
            {
                double dfNoDataValue = 0.0;
                switch (nSampleType)
                {
                    default:
                    {
                        break;
                    }
                    case RL2_SAMPLE_1_BIT:
                    {
                        unsigned char nVal = 0;
                        rl2_get_pixel_sample_1bit(noDataPtr, &nVal);
                        dfNoDataValue = nVal;
                        break;
                    }
                    case RL2_SAMPLE_2_BIT:
                    {
                        unsigned char nVal = 0;
                        rl2_get_pixel_sample_2bit(noDataPtr, &nVal);
                        dfNoDataValue = nVal;
                        break;
                    }
                    case RL2_SAMPLE_4_BIT:
                    {
                        unsigned char nVal = 0;
                        rl2_get_pixel_sample_4bit(noDataPtr, &nVal);
                        dfNoDataValue = nVal;
                        break;
                    }
                    case RL2_SAMPLE_INT8:
                    {
                        char nVal = 0;
                        rl2_get_pixel_sample_int8(noDataPtr, &nVal);
                        dfNoDataValue = nVal;
                        break;
                    }
                    case RL2_SAMPLE_UINT8:
                    {
                        unsigned char nVal = 0;
                        rl2_get_pixel_sample_uint8(noDataPtr, i, &nVal);
                        dfNoDataValue = nVal;
                        break;
                    }
                    case RL2_SAMPLE_INT16:
                    {
                        short nVal = 0;
                        rl2_get_pixel_sample_int16(noDataPtr, &nVal);
                        dfNoDataValue = nVal;
                        break;
                    }
                    case RL2_SAMPLE_UINT16:
                    {
                        unsigned short nVal = 0;
                        rl2_get_pixel_sample_uint16(noDataPtr, i, &nVal);
                        dfNoDataValue = nVal;
                        break;
                    }
                    case RL2_SAMPLE_INT32:
                    {
                        int nVal = 0;
                        rl2_get_pixel_sample_int32(noDataPtr, &nVal);
                        dfNoDataValue = nVal;
                        break;
                    }
                    case RL2_SAMPLE_UINT32:
                    {
                        unsigned int nVal = 0;
                        rl2_get_pixel_sample_uint32(noDataPtr, &nVal);
                        dfNoDataValue = nVal;
                        break;
                    }
                    case RL2_SAMPLE_FLOAT:
                    {
                        float fVal = 0.0f;
                        rl2_get_pixel_sample_float(noDataPtr, &fVal);
                        dfNoDataValue = fVal;
                        break;
                    }
                    case RL2_SAMPLE_DOUBLE:
                    {
                        double dfVal = 0.0;
                        rl2_get_pixel_sample_double(noDataPtr, &dfVal);
                        dfNoDataValue = dfVal;
                        break;
                    }
                }

                adfNoDataValues.push_back(dfNoDataValue);
            }
        }

        // Do not destroy noDataPtr. It belongs to m_pRL2Coverage
    }

    // The nodata concept in RasterLite2 is equivalent to the NODATA_VALUES
    // one of GDAL: the nodata value must be matched simultaneously on all
    // bands.
    if (adfNoDataValues.size() == l_nBands && l_nBands > 1)
    {
        CPLString osNoDataValues;
        for (int i = 0; i < l_nBands; i++)
        {
            if (!osNoDataValues.empty())
                osNoDataValues += " ";
            osNoDataValues += CPLSPrintf("%g", adfNoDataValues[i]);
        }
        GDALDataset::SetMetadataItem("NODATA_VALUES", osNoDataValues.c_str());
    }

    for (int iBand = 1; iBand <= l_nBands; ++iBand)
    {
        const bool bHasNoData = adfNoDataValues.size() == 1 && l_nBands == 1;
        const double dfNoDataValue = bHasNoData ? adfNoDataValues[0] : 0.0;
        SetBand(iBand,
                new RL2RasterBand(iBand, nPixelType, eDT, nBits,
                                  m_bPromote1BitAs8Bit, nBlockXSize,
                                  nBlockYSize, bHasNoData, dfNoDataValue));
    }

    // Fetch statistics
    if (m_nSectionId < 0 || bSingleSection)
    {
        rl2RasterStatisticsPtr pStatistics =
            rl2_create_raster_statistics_from_dbms(hDB, nullptr,
                                                   m_osCoverageName);
        if (pStatistics != nullptr)
        {
            for (int iBand = 1; iBand <= l_nBands; ++iBand)
            {
                GDALRasterBand *poBand = GetRasterBand(iBand);
                double dfMin = 0.0;
                double dfMax = 0.0;
                double dfMean = 0.0;
                double dfVariance = 0.0;
                double dfStdDev = 0.0;
                if (!(nBits == 1 && m_bPromote1BitAs8Bit) &&
                    rl2_get_band_statistics(
                        pStatistics, static_cast<unsigned char>(iBand - 1),
                        &dfMin, &dfMax, &dfMean, &dfVariance,
                        &dfStdDev) == RL2_OK)
                {
                    poBand->GDALRasterBand::SetMetadataItem(
                        "STATISTICS_MINIMUM", CPLSPrintf("%.16g", dfMin));
                    poBand->GDALRasterBand::SetMetadataItem(
                        "STATISTICS_MAXIMUM", CPLSPrintf("%.16g", dfMax));
                    poBand->GDALRasterBand::SetMetadataItem(
                        "STATISTICS_MEAN", CPLSPrintf("%.16g", dfMean));
                    poBand->GDALRasterBand::SetMetadataItem(
                        "STATISTICS_STDDEV", CPLSPrintf("%.16g", dfStdDev));
                }
            }
            rl2_destroy_raster_statistics(pStatistics);
        }
    }

    // Fetch other metadata
    char *pszSQL =
        sqlite3_mprintf("SELECT title, abstract FROM raster_coverages WHERE "
                        "Lower(coverage_name) = Lower('%q') LIMIT 1",
                        m_osCoverageName.c_str());
    char **papszResults = nullptr;
    int nRowCount = 0;
    int nColCount = 0;
    int rc = sqlite3_get_table(hDB, pszSQL, &papszResults, &nRowCount,
                               &nColCount, nullptr);
    sqlite3_free(pszSQL);
    if (rc == SQLITE_OK)
    {
        if (nRowCount == 1)
        {
            const char *pszTitle = papszResults[2 + 0];
            const char *pszAbstract = papszResults[2 + 1];
            if (pszTitle != nullptr && pszTitle[0] != '\0' &&
                !EQUAL(pszTitle, "*** missing Title ***"))
            {
                GDALDataset::SetMetadataItem("COVERAGE_TITLE", pszTitle);
            }
            if (pszAbstract != nullptr && pszAbstract[0] != '\0' &&
                !EQUAL(pszAbstract, "*** missing Abstract ***"))
            {
                GDALDataset::SetMetadataItem("COVERAGE_ABSTRACT", pszAbstract);
            }
        }
        sqlite3_free_table(papszResults);
    }

    if (m_nSectionId >= 0)
    {
        papszResults = nullptr;
        nRowCount = 0;
        nColCount = 0;
        pszSQL =
            sqlite3_mprintf("SELECT summary FROM \"%w\" WHERE "
                            "section_id = %d LIMIT 1",
                            CPLSPrintf("%s_sections", m_osCoverageName.c_str()),
                            static_cast<int>(m_nSectionId));
        rc = sqlite3_get_table(hDB, pszSQL, &papszResults, &nRowCount,
                               &nColCount, nullptr);
        sqlite3_free(pszSQL);
        if (rc == SQLITE_OK)
        {
            if (nRowCount == 1)
            {
                const char *pszSummary = papszResults[1 + 0];
                if (pszSummary != nullptr && pszSummary[0] != '\0')
                {
                    GDALDataset::SetMetadataItem("SECTION_SUMMARY", pszSummary);
                }
            }
            sqlite3_free_table(papszResults);
        }
    }

    // Instantiate overviews
    int nStrictResolution = 0;
    int nMixedResolutions = 0;
    int nSectionPaths = 0;
    int nSectionMD5 = 0;
    int nSectionSummary = 0;
    rl2_get_coverage_policies(m_pRL2Coverage, &nStrictResolution,
                              &nMixedResolutions, &nSectionPaths, &nSectionMD5,
                              &nSectionSummary);
    m_bRL2MixedResolutions = CPL_TO_BOOL(nMixedResolutions);

    ListOverviews();

    return true;
#else   // !defined(HAVE_RASTERLITE2)
    return false;
#endif  // HAVE_RASTERLITE2
}

#ifdef HAVE_RASTERLITE2

/************************************************************************/
/*                          ListOverviews()                             */
/************************************************************************/

void OGRSQLiteDataSource::ListOverviews()
{
    if (!m_bRL2MixedResolutions || m_nSectionId >= 0)
    {
        char *pszSQL;
        if (!m_bRL2MixedResolutions)
        {
            pszSQL = sqlite3_mprintf(
                "SELECT x_resolution_1_1, y_resolution_1_1, "
                "x_resolution_1_2, y_resolution_1_2, "
                "x_resolution_1_4, y_resolution_1_4,"
                "x_resolution_1_8, y_resolution_1_8 "
                "FROM \"%w\" ORDER BY pyramid_level "
                "LIMIT 1000",
                CPLSPrintf("%s_levels", m_osCoverageName.c_str()));
        }
        else
        {
            pszSQL = sqlite3_mprintf(
                "SELECT x_resolution_1_1, y_resolution_1_1, "
                "x_resolution_1_2, y_resolution_1_2, "
                "x_resolution_1_4, y_resolution_1_4,"
                "x_resolution_1_8, y_resolution_1_8 "
                "FROM \"%w\" WHERE section_id = %d "
                "ORDER BY pyramid_level "
                "LIMIT 1000",
                CPLSPrintf("%s_section_levels", m_osCoverageName.c_str()),
                static_cast<int>(m_nSectionId));
        }
        char **papszResults = nullptr;
        int nRowCount = 0;
        int nColCount = 0;
        char *pszErrMsg = nullptr;
        int rc = sqlite3_get_table(hDB, pszSQL, &papszResults, &nRowCount,
                                   &nColCount, &pszErrMsg);
        sqlite3_free(pszSQL);
        if (pszErrMsg)
            CPLDebug("SQLite", "%s", pszErrMsg);
        sqlite3_free(pszErrMsg);
        if (rc == SQLITE_OK)
        {
            for (int i = 0; i < nRowCount; ++i)
            {
                const char *const *papszRow = papszResults + i * 8 + 8;
                const char *pszXRes1 = papszRow[0];
                const char *pszYRes1 = papszRow[1];
                const char *pszXRes2 = papszRow[2];
                const char *pszYRes2 = papszRow[3];
                const char *pszXRes4 = papszRow[4];
                const char *pszYRes4 = papszRow[5];
                const char *pszXRes8 = papszRow[6];
                const char *pszYRes8 = papszRow[7];
                if (pszXRes1 != nullptr && pszYRes1 != nullptr)
                {
                    CreateRL2OverviewDatasetIfNeeded(CPLAtof(pszXRes1),
                                                     CPLAtof(pszYRes1));
                }
                if (pszXRes2 != nullptr && pszYRes2 != nullptr)
                {
                    CreateRL2OverviewDatasetIfNeeded(CPLAtof(pszXRes2),
                                                     CPLAtof(pszYRes2));
                }
                if (pszXRes4 != nullptr && pszYRes4 != nullptr)
                {
                    CreateRL2OverviewDatasetIfNeeded(CPLAtof(pszXRes4),
                                                     CPLAtof(pszYRes4));
                }
                if (pszXRes8 != nullptr && pszYRes8 != nullptr)
                {
                    CreateRL2OverviewDatasetIfNeeded(CPLAtof(pszXRes8),
                                                     CPLAtof(pszYRes8));
                }
            }
            sqlite3_free_table(papszResults);
        }
    }
}

/************************************************************************/
/*                    CreateRL2OverviewDatasetIfNeeded()                   */
/************************************************************************/

void OGRSQLiteDataSource::CreateRL2OverviewDatasetIfNeeded(double dfXRes,
                                                           double dfYRes)
{
    if (fabs(dfXRes - m_gt[1]) < 1e-5 * m_gt[1])
        return;

    for (size_t i = 0; i < m_apoOverviewDS.size(); ++i)
    {
        if (fabs(dfXRes - m_apoOverviewDS[i]->m_gt[1]) <
            1e-5 * m_apoOverviewDS[i]->m_gt[1])
        {
            return;
        }
    }

    OGRSQLiteDataSource *poOvrDS = new OGRSQLiteDataSource();
    poOvrDS->bIsInternal = true;
    poOvrDS->m_poParentDS = this;
    poOvrDS->m_osCoverageName = m_osCoverageName;
    poOvrDS->m_nSectionId = m_nSectionId;
    poOvrDS->m_bPromote1BitAs8Bit = m_bPromote1BitAs8Bit;
    poOvrDS->m_bRL2MixedResolutions = m_bRL2MixedResolutions;
    poOvrDS->m_gt[0] = m_gt[0];
    poOvrDS->m_gt[1] = dfXRes;
    poOvrDS->m_gt[3] = m_gt[3];
    poOvrDS->m_gt[5] = -dfYRes;
    const double dfMinX = m_gt[0];
    const double dfMaxX = dfMinX + m_gt[1] * nRasterXSize;
    const double dfMaxY = m_gt[3];
    const double dfMinY = dfMaxY + m_gt[5] * nRasterYSize;
    poOvrDS->nRasterXSize = static_cast<int>(0.5 + (dfMaxX - dfMinX) / dfXRes);
    poOvrDS->nRasterYSize = static_cast<int>(0.5 + (dfMaxY - dfMinY) / dfYRes);
    if (poOvrDS->nRasterXSize <= 1 || poOvrDS->nRasterYSize <= 1 ||
        (poOvrDS->nRasterXSize < 64 && poOvrDS->nRasterYSize < 64 &&
         !CPLTestBool(CPLGetConfigOption("RL2_SHOW_ALL_PYRAMID_LEVELS", "NO"))))
    {
        delete poOvrDS;
        return;
    }
    for (int iBand = 1; iBand <= nBands; ++iBand)
    {
        poOvrDS->SetBand(iBand,
                         new RL2RasterBand(reinterpret_cast<RL2RasterBand *>(
                             GetRasterBand(iBand))));
    }
    m_apoOverviewDS.push_back(poOvrDS);
}

/************************************************************************/
/*                            RL2RasterBand()                           */
/************************************************************************/

RL2RasterBand::RL2RasterBand(int nBandIn, int nPixelType, GDALDataType eDT,
                             int nBits, bool bPromote1BitAs8Bit,
                             int nBlockXSizeIn, int nBlockYSizeIn,
                             bool bHasNoDataIn, double dfNoDataValueIn)
    : m_bHasNoData(bHasNoDataIn), m_dfNoDataValue(dfNoDataValueIn),
      m_eColorInterp(GCI_Undefined), m_poCT(nullptr)
{
    eDataType = eDT;
    nBlockXSize = nBlockXSizeIn;
    nBlockYSize = nBlockYSizeIn;
    if ((nBits % 8) != 0)
    {
        GDALRasterBand::SetMetadataItem(
            (nBits == 1 && bPromote1BitAs8Bit) ? "SOURCE_NBITS" : "NBITS",
            CPLSPrintf("%d", nBits), "IMAGE_STRUCTURE");
    }

    if (nPixelType == RL2_PIXEL_MONOCHROME || nPixelType == RL2_PIXEL_GRAYSCALE)
    {
        m_eColorInterp = GCI_GrayIndex;
    }
    else if (nPixelType == RL2_PIXEL_PALETTE)
    {
        m_eColorInterp = GCI_PaletteIndex;
    }
    else if (nPixelType == RL2_PIXEL_RGB)
    {
        m_eColorInterp =
            static_cast<GDALColorInterp>(GCI_RedBand + nBandIn - 1);
    }
}

/************************************************************************/
/*                            RL2RasterBand()                           */
/************************************************************************/

RL2RasterBand::RL2RasterBand(const RL2RasterBand *poOther)
{
    eDataType = poOther->eDataType;
    nBlockXSize = poOther->nBlockXSize;
    nBlockYSize = poOther->nBlockYSize;
    GDALRasterBand::SetMetadataItem(
        "NBITS",
        const_cast<RL2RasterBand *>(poOther)->GetMetadataItem(
            "NBITS", "IMAGE_STRUCTURE"),
        "IMAGE_STRUCTURE");
    m_eColorInterp = poOther->m_eColorInterp;
    m_bHasNoData = poOther->m_bHasNoData;
    m_dfNoDataValue = poOther->m_dfNoDataValue;
    m_poCT = nullptr;
}

/************************************************************************/
/*                           ~RL2RasterBand()                           */
/************************************************************************/

RL2RasterBand::~RL2RasterBand()
{
    delete m_poCT;
}

/************************************************************************/
/*                          GetColorTable()                             */
/************************************************************************/

GDALColorTable *RL2RasterBand::GetColorTable()
{
    OGRSQLiteDataSource *poGDS = reinterpret_cast<OGRSQLiteDataSource *>(poDS);
    if (m_poCT == nullptr && m_eColorInterp == GCI_PaletteIndex)
    {
        rl2PalettePtr palettePtr = rl2_get_dbms_palette(
            poGDS->GetDB(), nullptr,
            rl2_get_coverage_name(poGDS->GetRL2CoveragePtr()));
        if (palettePtr)
        {
            m_poCT = new GDALColorTable();
            unsigned short nEntries = 0;
            unsigned char *pabyR = nullptr;
            unsigned char *pabyG = nullptr;
            unsigned char *pabyB = nullptr;
            if (rl2_get_palette_colors(palettePtr, &nEntries, &pabyR, &pabyG,
                                       &pabyB) == RL2_OK)
            {
                for (int i = 0; i < nEntries; ++i)
                {
                    GDALColorEntry sEntry;
                    sEntry.c1 = pabyR[i];
                    sEntry.c2 = pabyG[i];
                    sEntry.c3 = pabyB[i];
                    sEntry.c4 =
                        (m_bHasNoData && i == m_dfNoDataValue) ? 0 : 255;
                    m_poCT->SetColorEntry(i, &sEntry);
                }
                rl2_free(pabyR);
                rl2_free(pabyG);
                rl2_free(pabyB);
            }
            rl2_destroy_palette(palettePtr);
        }
    }
    return m_poCT;
}

/************************************************************************/
/*                          GetOverviewCount()                          */
/************************************************************************/

int RL2RasterBand::GetOverviewCount()
{
    OGRSQLiteDataSource *poGDS = reinterpret_cast<OGRSQLiteDataSource *>(poDS);
    int nRet = static_cast<int>(poGDS->GetOverviews().size());
    if (nRet > 0)
        return nRet;
    return GDALPamRasterBand::GetOverviewCount();
}

/************************************************************************/
/*                           GetOverview()                              */
/************************************************************************/

GDALRasterBand *RL2RasterBand::GetOverview(int nIdx)
{
    OGRSQLiteDataSource *poGDS = reinterpret_cast<OGRSQLiteDataSource *>(poDS);
    int nOvr = static_cast<int>(poGDS->GetOverviews().size());
    if (nOvr > 0)
    {
        if (nIdx < 0 || nIdx >= nOvr)
            return nullptr;
        return poGDS->GetOverviews()[nIdx]->GetRasterBand(nBand);
    }
    return GDALPamRasterBand::GetOverview(nIdx);
}

/************************************************************************/
/*                          GetNoDataValue()                            */
/************************************************************************/

double RL2RasterBand::GetNoDataValue(int *pbSuccess)
{
    if (m_bHasNoData)
    {
        if (pbSuccess)
            *pbSuccess = TRUE;
        return m_dfNoDataValue;
    }
    return GDALPamRasterBand::GetNoDataValue(pbSuccess);
}

/************************************************************************/
/*                             IReadBlock()                             */
/************************************************************************/

CPLErr RL2RasterBand::IReadBlock(int nBlockXOff, int nBlockYOff, void *pData)
{
    OGRSQLiteDataSource *poGDS = reinterpret_cast<OGRSQLiteDataSource *>(poDS);
#ifdef DEBUG_VERBOSE
    CPLDebug("SQLite", "IReadBlock(ds=%p, band=%d, x=%d, y=%d)", poGDS, nBand,
             nBlockXOff, nBlockYOff);
#endif

    const int nMaxThreads = 1;
    const auto &gt = poGDS->GetGeoTransform();
    const double dfMinX = gt[0] + nBlockXOff * nBlockXSize * gt[1];
    const double dfMaxX = dfMinX + nBlockXSize * gt[1];
    const double dfMaxY = gt[3] + nBlockYOff * nBlockYSize * gt[5];
    const double dfMinY = dfMaxY + nBlockYSize * gt[5];
    unsigned char *pBuffer = nullptr;
    int nBufSize = 0;

    sqlite3 *hDB =
        poGDS->GetParentDS() ? poGDS->GetParentDS()->GetDB() : poGDS->GetDB();
    rl2CoveragePtr cov = poGDS->GetParentDS()
                             ? poGDS->GetParentDS()->GetRL2CoveragePtr()
                             : poGDS->GetRL2CoveragePtr();
    unsigned char nSampleType = 0;
    unsigned char nPixelType = 0;
    unsigned char l_nBands = 0;
    rl2_get_coverage_type(cov, &nSampleType, &nPixelType, &l_nBands);

    unsigned char nOutPixel = nPixelType;
    if (nPixelType == RL2_PIXEL_MONOCHROME && nSampleType == RL2_SAMPLE_1_BIT)
    {
        nOutPixel = RL2_PIXEL_GRAYSCALE;
    }

    const GIntBig nSectionId = poGDS->GetSectionId();
    if (nSectionId >= 0 &&
        (poGDS->IsRL2MixedResolutions() || poGDS->GetParentDS() == nullptr))
    {
        int ret = rl2_get_section_raw_raster_data(
            hDB, nMaxThreads, cov, nSectionId, nBlockXSize, nBlockYSize, dfMinX,
            dfMinY, dfMaxX, dfMaxY, gt[1], fabs(gt[5]), &pBuffer, &nBufSize,
            nullptr,  // palette
            nOutPixel);
        if (ret != RL2_OK)
            return CE_Failure;
    }
    else
    {
        int ret = rl2_get_raw_raster_data(
            hDB, nMaxThreads, cov, nBlockXSize, nBlockYSize, dfMinX, dfMinY,
            dfMaxX, dfMaxY, gt[1], fabs(gt[5]), &pBuffer, &nBufSize,
            nullptr,  // palette
            nOutPixel);
        if (ret != RL2_OK)
            return CE_Failure;
    }

    const int nDTSize = GDALGetDataTypeSizeBytes(eDataType);
    const int nExpectedBytesOnBand = nBlockXSize * nBlockYSize * nDTSize;
    const int nBands = poGDS->GetRasterCount();
    const int nExpectedBytesAllBands = nExpectedBytesOnBand * nBands;
    if (nBufSize != nExpectedBytesAllBands)
    {
        CPLDebug("SQLite", "Got %d bytes instead of %d", nBufSize,
                 nExpectedBytesAllBands);
        rl2_free(pBuffer);
        return CE_Failure;
    }

    if (nPixelType == RL2_PIXEL_MONOCHROME && nSampleType == RL2_SAMPLE_1_BIT &&
        !poGDS->HasPromote1BitAS8Bit() && poGDS->GetParentDS() != nullptr)
    {
        GByte *pabyDstData = static_cast<GByte *>(pData);
        for (int i = 0; i < nExpectedBytesAllBands; i++)
        {
            pabyDstData[i] = (pBuffer[i] > 127) ? 1 : 0;
        }
    }
    else
    {
        GDALCopyWords(pBuffer + (nBand - 1) * nDTSize, eDataType,
                      nDTSize * nBands, pData, eDataType, nDTSize,
                      nBlockXSize * nBlockYSize);
    }

    if (nBands > 1)
    {
        for (int iBand = 1; iBand <= nBands; ++iBand)
        {
            if (iBand == nBand)
                continue;

            GDALRasterBlock *poBlock =
                reinterpret_cast<RL2RasterBand *>(poGDS->GetRasterBand(iBand))
                    ->TryGetLockedBlockRef(nBlockXOff, nBlockYOff);
            if (poBlock != nullptr)
            {
                poBlock->DropLock();
                continue;
            }
            poBlock =
                reinterpret_cast<RL2RasterBand *>(poGDS->GetRasterBand(iBand))
                    ->GetLockedBlockRef(nBlockXOff, nBlockYOff, TRUE);
            if (poBlock == nullptr)
                continue;
            void *pDest = poBlock->GetDataRef();
            GDALCopyWords(pBuffer + (iBand - 1) * nDTSize, eDataType,
                          nDTSize * nBands, pDest, eDataType, nDTSize,
                          nBlockXSize * nBlockYSize);

            poBlock->DropLock();
        }
    }

    rl2_free(pBuffer);

    return CE_None;
}

/************************************************************************/
/*                          GetNoDataValue()                            */
/************************************************************************/

template <class T>
static T GetNoDataValue(GDALDataset *poSrcDS, int nBand, T nDefault)
{
    int bHasNoData = FALSE;
    double dfNoData =
        poSrcDS->GetRasterBand(nBand)->GetNoDataValue(&bHasNoData);
    if (bHasNoData)
        return static_cast<T>(dfNoData);
    return static_cast<T>(nDefault);
}

/************************************************************************/
/*                          CreateNoData()                              */
/************************************************************************/

static rl2PixelPtr CreateNoData(unsigned char nSampleType,
                                unsigned char nPixelType,
                                unsigned char nBandCount, GDALDataset *poSrcDS)
{
    // creating a default NO-DATA value
    rl2PixelPtr pxl = rl2_create_pixel(nSampleType, nPixelType, nBandCount);
    if (pxl == nullptr)
        return nullptr;
    switch (nPixelType)
    {
        case RL2_PIXEL_MONOCHROME:
            rl2_set_pixel_sample_1bit(pxl,
                                      GetNoDataValue<GByte>(poSrcDS, 1, 0));
            break;
        case RL2_PIXEL_PALETTE:
            switch (nSampleType)
            {
                case RL2_SAMPLE_1_BIT:
                    rl2_set_pixel_sample_1bit(
                        pxl, GetNoDataValue<GByte>(poSrcDS, 1, 0));
                    break;
                case RL2_SAMPLE_2_BIT:
                    rl2_set_pixel_sample_2bit(
                        pxl, GetNoDataValue<GByte>(poSrcDS, 1, 0));
                    break;
                case RL2_SAMPLE_4_BIT:
                    rl2_set_pixel_sample_4bit(
                        pxl, GetNoDataValue<GByte>(poSrcDS, 1, 0));
                    break;
                case RL2_SAMPLE_UINT8:
                    rl2_set_pixel_sample_uint8(
                        pxl, 0, GetNoDataValue<GByte>(poSrcDS, 1, 0));
                    break;
                default:
                    CPLAssert(false);
                    break;
            }
            break;
        case RL2_PIXEL_GRAYSCALE:
            switch (nSampleType)
            {
                case RL2_SAMPLE_1_BIT:
                    rl2_set_pixel_sample_1bit(
                        pxl, GetNoDataValue<GByte>(poSrcDS, 1, 1));
                    break;
                case RL2_SAMPLE_2_BIT:
                    rl2_set_pixel_sample_2bit(
                        pxl, GetNoDataValue<GByte>(poSrcDS, 1, 3));
                    break;
                case RL2_SAMPLE_4_BIT:
                    rl2_set_pixel_sample_4bit(
                        pxl, GetNoDataValue<GByte>(poSrcDS, 1, 15));
                    break;
                case RL2_SAMPLE_UINT8:
                    rl2_set_pixel_sample_uint8(
                        pxl, 0, GetNoDataValue<GByte>(poSrcDS, 1, 255));
                    break;
                case RL2_SAMPLE_UINT16:
                    rl2_set_pixel_sample_uint16(
                        pxl, 0, GetNoDataValue<GUInt16>(poSrcDS, 1, 0));
                    break;
                default:
                    CPLAssert(false);
                    break;
            }
            break;
        case RL2_PIXEL_RGB:
            switch (nSampleType)
            {
                case RL2_SAMPLE_UINT8:
                    rl2_set_pixel_sample_uint8(
                        pxl, 0, GetNoDataValue<GByte>(poSrcDS, 1, 255));
                    rl2_set_pixel_sample_uint8(
                        pxl, 1, GetNoDataValue<GByte>(poSrcDS, 2, 255));
                    rl2_set_pixel_sample_uint8(
                        pxl, 2, GetNoDataValue<GByte>(poSrcDS, 3, 255));
                    break;
                case RL2_SAMPLE_UINT16:
                    rl2_set_pixel_sample_uint16(
                        pxl, 0, GetNoDataValue<GUInt16>(poSrcDS, 1, 0));
                    rl2_set_pixel_sample_uint16(
                        pxl, 1, GetNoDataValue<GUInt16>(poSrcDS, 2, 0));
                    rl2_set_pixel_sample_uint16(
                        pxl, 2, GetNoDataValue<GUInt16>(poSrcDS, 3, 0));
                    break;
                default:
                    CPLAssert(false);
                    break;
            }
            break;
        case RL2_PIXEL_DATAGRID:
            switch (nSampleType)
            {
                case RL2_SAMPLE_INT8:
                    rl2_set_pixel_sample_int8(
                        pxl, GetNoDataValue<char>(poSrcDS, 1, 0));
                    break;
                case RL2_SAMPLE_UINT8:
                    rl2_set_pixel_sample_uint8(
                        pxl, 0, GetNoDataValue<GByte>(poSrcDS, 1, 0));
                    break;
                case RL2_SAMPLE_INT16:
                    rl2_set_pixel_sample_int16(
                        pxl, GetNoDataValue<GInt16>(poSrcDS, 1, 0));
                    break;
                case RL2_SAMPLE_UINT16:
                    rl2_set_pixel_sample_uint16(
                        pxl, 0, GetNoDataValue<GUInt16>(poSrcDS, 1, 0));
                    break;
                case RL2_SAMPLE_INT32:
                    rl2_set_pixel_sample_int32(
                        pxl, GetNoDataValue<GInt32>(poSrcDS, 1, 0));
                    break;
                case RL2_SAMPLE_UINT32:
                    rl2_set_pixel_sample_uint32(
                        pxl, GetNoDataValue<GUInt32>(poSrcDS, 1, 0));
                    break;
                case RL2_SAMPLE_FLOAT:
                    rl2_set_pixel_sample_float(
                        pxl, GetNoDataValue<float>(poSrcDS, 1, 0));
                    break;
                case RL2_SAMPLE_DOUBLE:
                    rl2_set_pixel_sample_double(
                        pxl, GetNoDataValue<double>(poSrcDS, 1, 0));
                    break;
                default:
                    CPLAssert(false);
                    break;
            }
            break;
        case RL2_PIXEL_MULTIBAND:
            switch (nSampleType)
            {
                case RL2_SAMPLE_UINT8:
                    for (unsigned int nb = 0; nb < nBandCount; nb++)
                        rl2_set_pixel_sample_uint8(
                            pxl, nb,
                            GetNoDataValue<GByte>(poSrcDS, nb + 1, 255));
                    break;
                case RL2_SAMPLE_UINT16:
                    for (unsigned int nb = 0; nb < nBandCount; nb++)
                        rl2_set_pixel_sample_uint16(
                            pxl, nb,
                            GetNoDataValue<GUInt16>(poSrcDS, nb + 1, 0));
                    break;
                default:
                    CPLAssert(false);
                    break;
            }
            break;
        default:
            CPLAssert(false);
            break;
    }
    return pxl;
}

/************************************************************************/
/*                       RasterLite2Callback()                          */
/************************************************************************/

struct RasterLite2CallbackData
{
    GDALDataset *poSrcDS{};
    unsigned char nPixelType{};
    unsigned char nSampleType{};
    rl2PalettePtr pPalette{};
    GDALProgressFunc pfnProgress{};
    void *pProgressData{};
    GDALGeoTransform gt{};
};

static int RasterLite2Callback(void *data, double dfTileMinX, double dfTileMinY,
                               double dfTileMaxX, double dfTileMaxY,
                               unsigned char *pabyBuffer,
                               rl2PalettePtr *pOutPalette)
{
#ifdef DEBUG_VERBOSE
    CPLDebug("SQLite", "RasterLite2Callback(%f %f %f %f)", dfTileMinX,
             dfTileMinY, dfTileMaxX, dfTileMaxY);
#endif
    RasterLite2CallbackData *pCbkData =
        static_cast<RasterLite2CallbackData *>(data);
    if (pOutPalette)
    {
        if (pCbkData->pPalette)
            *pOutPalette = rl2_clone_palette(pCbkData->pPalette);
        else
            *pOutPalette = nullptr;
    }
    int nXOff = static_cast<int>(0.5 + (dfTileMinX - pCbkData->gt[0]) /
                                           pCbkData->gt[1]);
    int nXOff2 = static_cast<int>(0.5 + (dfTileMaxX - pCbkData->gt[0]) /
                                            pCbkData->gt[1]);
    int nYOff = static_cast<int>(0.5 + (dfTileMaxY - pCbkData->gt[3]) /
                                           pCbkData->gt[5]);
    int nYOff2 = static_cast<int>(0.5 + (dfTileMinY - pCbkData->gt[3]) /
                                            pCbkData->gt[5]);
    int nReqXSize = nXOff2 - nXOff;
    bool bZeroInitialize = false;
    if (nXOff2 > pCbkData->poSrcDS->GetRasterXSize())
    {
        bZeroInitialize = true;
        nReqXSize = pCbkData->poSrcDS->GetRasterXSize() - nXOff;
    }
    int nReqYSize = nYOff2 - nYOff;
    if (nYOff2 > pCbkData->poSrcDS->GetRasterYSize())
    {
        bZeroInitialize = true;
        nReqYSize = pCbkData->poSrcDS->GetRasterYSize() - nYOff;
    }

    GDALDataType eDT = pCbkData->poSrcDS->GetRasterBand(1)->GetRasterDataType();
    int nDTSize = GDALGetDataTypeSizeBytes(eDT);
    int nBands = pCbkData->poSrcDS->GetRasterCount();
    if (bZeroInitialize)
    {
        memset(pabyBuffer, 0,
               static_cast<size_t>(nXOff2 - nXOff) * (nYOff2 - nYOff) * nBands *
                   nDTSize);
    }

    const GSpacing nPixelSpacing = static_cast<GSpacing>(nDTSize) * nBands;
    const GSpacing nLineSpacing = nPixelSpacing * (nXOff2 - nXOff);
    CPLErr eErr = pCbkData->poSrcDS->RasterIO(
        GF_Read, nXOff, nYOff, nReqXSize, nReqYSize, pabyBuffer, nReqXSize,
        nReqYSize, eDT, nBands, nullptr, nPixelSpacing, nLineSpacing, nDTSize,
        nullptr);
    if (eErr != CE_None)
        return FALSE;

    if (pCbkData->pfnProgress &&
        !pCbkData->pfnProgress(static_cast<double>(nYOff + nReqYSize) /
                                   pCbkData->poSrcDS->GetRasterYSize(),
                               "", pCbkData->pProgressData))
    {
        return FALSE;
    }

    int nMaxVal = 0;
    if (pCbkData->nSampleType == RL2_SAMPLE_1_BIT)
    {
        nMaxVal = 1;
    }
    else if (pCbkData->nSampleType == RL2_SAMPLE_2_BIT)
    {
        nMaxVal = 3;
    }
    else if (pCbkData->nSampleType == RL2_SAMPLE_4_BIT)
    {
        nMaxVal = 7;
    }
    if (nMaxVal != 0)
    {
        bool bClamped = false;
        for (int iY = 0; iY < nReqYSize; ++iY)
        {
            for (int iX = 0; iX < nReqXSize; ++iX)
            {
                GByte *pbyVal = pabyBuffer +
                                static_cast<size_t>(iY) * (nXOff2 - nXOff) + iX;
                if (*pbyVal > nMaxVal)
                {
                    if (!bClamped)
                    {
                        bClamped = true;
                        CPLError(CE_Warning, CPLE_AppDefined,
                                 "One or several values above %d have "
                                 "been clamped",
                                 nMaxVal);
                    }
                    *pbyVal = nMaxVal;
                }
            }
        }
    }

    return TRUE;
}

/************************************************************************/
/*                    OGRSQLiteDriverCreateCopy()                       */
/************************************************************************/

GDALDataset *OGRSQLiteDriverCreateCopy(const char *pszName,
                                       GDALDataset *poSrcDS, int /* bStrict */,
                                       char **papszOptions,
                                       GDALProgressFunc pfnProgress,
                                       void *pProgressData)
{
    if (poSrcDS->GetRasterCount() == 0 || poSrcDS->GetRasterCount() > 255)
    {
        CPLError(CE_Failure, CPLE_NotSupported, "Unsupported band count");
        return nullptr;
    }

    GDALGeoTransform gt;
    if (poSrcDS->GetGeoTransform(gt) == CE_None &&
        (gt[2] != 0.0 || gt[4] != 0.0))
    {
        CPLError(CE_Failure, CPLE_NotSupported,
                 "Raster with rotation/shearing geotransform terms "
                 "are not supported");
        return nullptr;
    }

    if (CSLFetchNameValue(papszOptions, "APPEND_SUBDATASET") &&
        !CSLFetchNameValue(papszOptions, "COVERAGE"))
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "COVERAGE must be specified with APPEND_SUBDATASET=YES");
        return nullptr;
    }

    GDALDataType eDT = poSrcDS->GetRasterBand(1)->GetRasterDataType();

    unsigned char nSampleType = RL2_SAMPLE_UINT8;
    unsigned char nPixelType = RL2_PIXEL_GRAYSCALE;
    unsigned char nBandCount =
        static_cast<unsigned char>(poSrcDS->GetRasterCount());

    const char *pszPixelType = CSLFetchNameValue(papszOptions, "PIXEL_TYPE");
    if (pszPixelType)
    {
        if (EQUAL(pszPixelType, "MONOCHROME"))
            nPixelType = RL2_PIXEL_MONOCHROME;
        else if (EQUAL(pszPixelType, "PALETTE"))
            nPixelType = RL2_PIXEL_PALETTE;
        else if (EQUAL(pszPixelType, "GRAYSCALE"))
            nPixelType = RL2_PIXEL_GRAYSCALE;
        else if (EQUAL(pszPixelType, "RGB"))
            nPixelType = RL2_PIXEL_RGB;
        else if (EQUAL(pszPixelType, "MULTIBAND"))
            nPixelType = RL2_PIXEL_MULTIBAND;
        else if (EQUAL(pszPixelType, "DATAGRID"))
            nPixelType = RL2_PIXEL_DATAGRID;
    }
    else
    {
        // Guess a reasonable pixel type from band characteristics
        if (nBandCount == 1 &&
            poSrcDS->GetRasterBand(1)->GetColorTable() != nullptr)
        {
            nPixelType = RL2_PIXEL_PALETTE;
        }
        else if (nBandCount == 3 && (eDT == GDT_Byte || eDT == GDT_UInt16) &&
                 poSrcDS->GetRasterBand(1)->GetColorInterpretation() ==
                     GCI_RedBand &&
                 poSrcDS->GetRasterBand(2)->GetColorInterpretation() ==
                     GCI_GreenBand &&
                 poSrcDS->GetRasterBand(3)->GetColorInterpretation() ==
                     GCI_BlueBand)
        {
            nPixelType = RL2_PIXEL_RGB;
        }
        else if (nBandCount > 1 && (eDT == GDT_Byte || eDT == GDT_UInt16))
        {
            nPixelType = RL2_PIXEL_MULTIBAND;
        }
        else if (nBandCount == 1 && eDT != GDT_Byte)
        {
            nPixelType = RL2_PIXEL_DATAGRID;
        }
    }

    // Deal with NBITS
    const char *pszNBITS = CSLFetchNameValue(papszOptions, "NBITS");
    int nBITS = 0;
    if (pszNBITS != nullptr)
    {
        nBITS = atoi(pszNBITS);
        if (nBITS != 1 && nBITS != 2 && nBITS != 4 && nBITS != 8)
        {
            CPLError(CE_Failure, CPLE_NotSupported, "Unsupported NBITS value");
            return nullptr;
        }
    }
    else
    {
        pszNBITS = poSrcDS->GetRasterBand(1)->GetMetadataItem(
            "NBITS", "IMAGE_STRUCTURE");
        if (pszNBITS != nullptr)
        {
            nBITS = atoi(pszNBITS);
        }
    }

    if (nBITS > 0 && nBITS <= 8 && eDT != GDT_Byte)
    {
        CPLError(CE_Failure, CPLE_NotSupported,
                 "NBITS <= 8 only compatible with Byte data type");
        return nullptr;
    }

    if (nBITS == 1)
    {
        nSampleType = RL2_SAMPLE_1_BIT;
        if (nPixelType != RL2_PIXEL_PALETTE && pszPixelType == nullptr)
            nPixelType = RL2_PIXEL_MONOCHROME;
    }
    else if (nBITS == 2)
    {
        nSampleType = RL2_SAMPLE_2_BIT;
        if (nPixelType != RL2_PIXEL_PALETTE && pszPixelType == nullptr)
            nPixelType = RL2_PIXEL_GRAYSCALE;
    }
    else if (nBITS == 4)
    {
        nSampleType = RL2_SAMPLE_4_BIT;
        if (nPixelType != RL2_PIXEL_PALETTE && pszPixelType == nullptr)
            nPixelType = RL2_PIXEL_GRAYSCALE;
    }

    if (nPixelType == RL2_PIXEL_MONOCHROME)
    {
        if (eDT != GDT_Byte)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Incompatible data type for MONOCHROME");
            return nullptr;
        }
        // Force 1 bit
        nSampleType = RL2_SAMPLE_1_BIT;
    }

    // Guess sample type in other cases
    if (eDT == GDT_Int8)
        nSampleType = RL2_SAMPLE_INT8;
    else if (eDT == GDT_UInt16)
        nSampleType = RL2_SAMPLE_UINT16;
    else if (eDT == GDT_Int16)
        nSampleType = RL2_SAMPLE_INT16;
    else if (eDT == GDT_UInt32)
        nSampleType = RL2_SAMPLE_UINT32;
    else if (eDT == GDT_Int32)
        nSampleType = RL2_SAMPLE_INT32;
    else if (eDT == GDT_Float32)
        nSampleType = RL2_SAMPLE_FLOAT;
    else if (eDT == GDT_Float64)
        nSampleType = RL2_SAMPLE_DOUBLE;
    else if (eDT != GDT_Byte)
    {
        CPLError(CE_Failure, CPLE_NotSupported, "Unsupported data type");
        return nullptr;
    }

    unsigned char nCompression = RL2_COMPRESSION_NONE;
    int nQuality = 100;
    const char *pszCompression = CSLFetchNameValue(papszOptions, "COMPRESS");
    if (pszCompression)
    {
        if (EQUAL(pszCompression, "NONE"))
            nCompression = RL2_COMPRESSION_NONE;
        else if (EQUAL(pszCompression, "DEFLATE"))
            nCompression = RL2_COMPRESSION_DEFLATE;
        else if (EQUAL(pszCompression, "LZMA"))
            nCompression = RL2_COMPRESSION_LZMA;
        else if (EQUAL(pszCompression, "PNG"))
            nCompression = RL2_COMPRESSION_PNG;
        else if (EQUAL(pszCompression, "CCITTFAX4"))
            nCompression = RL2_COMPRESSION_CCITTFAX4;
        else if (EQUAL(pszCompression, "JPEG"))
        {
            nCompression = RL2_COMPRESSION_JPEG;
            nQuality = 75;
        }
        else if (EQUAL(pszCompression, "WEBP"))
        {
            nCompression = RL2_COMPRESSION_LOSSY_WEBP;
            nQuality = 75;
        }
        else if (EQUAL(pszCompression, "JPEG2000"))
        {
            nCompression = RL2_COMPRESSION_LOSSY_JP2;
            nQuality = 20;
        }
        else
        {
            CPLError(CE_Failure, CPLE_NotSupported, "Unsupported compression");
            return nullptr;
        }
        if (!rl2_is_supported_codec(nCompression))
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "librasterlite2 is not built with support for "
                     "this compression method.");
            return nullptr;
        }
    }

    // Compatibility checks:
    // see
    // https://www.gaia-gis.it/fossil/librasterlite2/wiki?name=reference_table
    if (nPixelType == RL2_PIXEL_MONOCHROME)
    {
        if (nBandCount != 1)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported band count with MONOCHROME");
            return nullptr;
        }
        CPLAssert(nSampleType == RL2_SAMPLE_1_BIT);
    }
    else if (nPixelType == RL2_PIXEL_PALETTE)
    {
        if (nBandCount != 1)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported band count with PALETTE");
            return nullptr;
        }
        if (nSampleType != RL2_SAMPLE_1_BIT &&
            nSampleType != RL2_SAMPLE_2_BIT &&
            nSampleType != RL2_SAMPLE_4_BIT && nSampleType != RL2_SAMPLE_UINT8)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported sample type with PALETTE");
            return nullptr;
        }
    }
    else if (nPixelType == RL2_PIXEL_GRAYSCALE)
    {
        if (nBandCount != 1)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported band count with GRAYSCALE");
            return nullptr;
        }
        if (nSampleType != RL2_SAMPLE_2_BIT &&
            nSampleType != RL2_SAMPLE_4_BIT && nSampleType != RL2_SAMPLE_UINT8)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported sample type with GRAYSCALE");
            return nullptr;
        }
    }
    else if (nPixelType == RL2_PIXEL_RGB)
    {
        if (nBandCount != 3)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported band count with RGB");
            return nullptr;
        }
        if (nSampleType != RL2_SAMPLE_UINT8 && nSampleType != RL2_SAMPLE_UINT16)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported sample type with RGB");
            return nullptr;
        }
    }
    else if (nPixelType == RL2_PIXEL_MULTIBAND)
    {
        if (nBandCount == 1)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported band count with MULTIBAND");
            return nullptr;
        }
        if (nSampleType != RL2_SAMPLE_UINT8 && nSampleType != RL2_SAMPLE_UINT16)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported sample type with MULTIBAND");
            return nullptr;
        }
    }
    else if (nPixelType == RL2_PIXEL_DATAGRID)
    {
        if (nBandCount != 1)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported band count with DATAGRID");
            return nullptr;
        }
        if (nSampleType != RL2_SAMPLE_INT8 && nSampleType != RL2_SAMPLE_UINT8 &&
            nSampleType != RL2_SAMPLE_INT16 &&
            nSampleType != RL2_SAMPLE_UINT16 &&
            nSampleType != RL2_SAMPLE_INT32 &&
            nSampleType != RL2_SAMPLE_UINT32 &&
            nSampleType != RL2_SAMPLE_FLOAT && nSampleType != RL2_SAMPLE_DOUBLE)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported sample type with DATAGRID");
            return nullptr;
        }
    }

    // Other compatibility checks based on compression
    if (nPixelType == RL2_PIXEL_MONOCHROME)
    {
        if (nCompression != RL2_COMPRESSION_NONE &&
            nCompression != RL2_COMPRESSION_DEFLATE &&
            nCompression != RL2_COMPRESSION_DEFLATE_NO &&
            nCompression != RL2_COMPRESSION_LZMA &&
            nCompression != RL2_COMPRESSION_LZMA_NO &&
            nCompression != RL2_COMPRESSION_CCITTFAX4 &&
            nCompression != RL2_COMPRESSION_PNG)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported compression with MONOCHROME");
            return nullptr;
        }
    }
    else if (nPixelType == RL2_PIXEL_PALETTE)
    {
        if (nCompression != RL2_COMPRESSION_NONE &&
            nCompression != RL2_COMPRESSION_DEFLATE &&
            nCompression != RL2_COMPRESSION_DEFLATE_NO &&
            nCompression != RL2_COMPRESSION_LZMA &&
            nCompression != RL2_COMPRESSION_LZMA_NO &&
            nCompression != RL2_COMPRESSION_PNG)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported compression with PALETTE");
            return nullptr;
        }
    }
    else if (nPixelType == RL2_PIXEL_GRAYSCALE)
    {
        if (nCompression == RL2_COMPRESSION_CCITTFAX4)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported compression with GRAYSCALE");
            return nullptr;
        }
    }
    else if (nPixelType == RL2_PIXEL_RGB && nSampleType == RL2_SAMPLE_UINT8)
    {
        if (nCompression == RL2_COMPRESSION_CCITTFAX4)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported compression with RGB UINT8");
            return nullptr;
        }
    }
    else if (nPixelType == RL2_PIXEL_RGB && nSampleType == RL2_SAMPLE_UINT16)
    {
        if (nCompression == RL2_COMPRESSION_CCITTFAX4 ||
            nCompression == RL2_COMPRESSION_JPEG ||
            nCompression == RL2_COMPRESSION_LOSSY_WEBP ||
            nCompression == RL2_COMPRESSION_LOSSLESS_WEBP)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported compression with RGB UINT16");
            return nullptr;
        }
    }
    else if (nPixelType == RL2_PIXEL_MULTIBAND &&
             nSampleType == RL2_SAMPLE_UINT8 &&
             (nBandCount == 3 || nBandCount == 4))
    {
        if (nCompression == RL2_COMPRESSION_CCITTFAX4 ||
            nCompression == RL2_COMPRESSION_JPEG)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported compression with MULTIBAND UINT8 %d bands",
                     nBandCount);
            return nullptr;
        }
    }
    else if (nPixelType == RL2_PIXEL_MULTIBAND &&
             nSampleType == RL2_SAMPLE_UINT16 &&
             (nBandCount == 3 || nBandCount == 4))
    {
        if (nCompression == RL2_COMPRESSION_CCITTFAX4 ||
            nCompression == RL2_COMPRESSION_JPEG ||
            nCompression == RL2_COMPRESSION_LOSSY_WEBP ||
            nCompression == RL2_COMPRESSION_LOSSLESS_WEBP)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported compression with MULTIBAND UINT16 %d bands",
                     nBandCount);
            return nullptr;
        }
    }
    else if (nPixelType == RL2_PIXEL_MULTIBAND)
    {
        if (nCompression != RL2_COMPRESSION_NONE &&
            nCompression != RL2_COMPRESSION_DEFLATE &&
            nCompression != RL2_COMPRESSION_DEFLATE_NO &&
            nCompression != RL2_COMPRESSION_LZMA &&
            nCompression != RL2_COMPRESSION_LZMA_NO)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported compression with MULTIBAND %s %d bands",
                     (nSampleType == RL2_SAMPLE_UINT8) ? "UINT8" : "UINT16",
                     nBandCount);
            return nullptr;
        }
    }
    else if (nPixelType == RL2_PIXEL_DATAGRID &&
             (nSampleType == RL2_SAMPLE_UINT8 ||
              nSampleType == RL2_SAMPLE_UINT16))
    {
        if (nCompression == RL2_COMPRESSION_CCITTFAX4 ||
            nCompression == RL2_COMPRESSION_JPEG ||
            nCompression == RL2_COMPRESSION_LOSSY_WEBP ||
            nCompression == RL2_COMPRESSION_LOSSLESS_WEBP)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported compression with DATAGRID %s",
                     (nSampleType == RL2_SAMPLE_UINT8) ? "UINT8" : "UINT16");
            return nullptr;
        }
    }
    else if (nPixelType == RL2_PIXEL_DATAGRID &&
             nSampleType != RL2_SAMPLE_UINT8 &&
             nSampleType != RL2_SAMPLE_UINT16)
    {
        if (nCompression != RL2_COMPRESSION_NONE &&
            nCompression != RL2_COMPRESSION_DEFLATE &&
            nCompression != RL2_COMPRESSION_DEFLATE_NO &&
            nCompression != RL2_COMPRESSION_LZMA &&
            nCompression != RL2_COMPRESSION_LZMA_NO)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                     "Unsupported compression with DATAGRID %s",
                     GDALGetDataTypeName(eDT));
            return nullptr;
        }
    }

    const char *pszQuality = CSLFetchNameValue(papszOptions, "QUALITY");
    if (pszQuality)
    {
        nQuality = atoi(pszQuality);
        if (nQuality == 100 && nCompression == RL2_COMPRESSION_LOSSY_JP2)
            nCompression = RL2_COMPRESSION_LOSSLESS_JP2;
        else if (nQuality == 100 && nCompression == RL2_COMPRESSION_LOSSY_WEBP)
            nCompression = RL2_COMPRESSION_LOSSLESS_WEBP;
    }

    unsigned int nTileWidth =
        atoi(CSLFetchNameValueDef(papszOptions, "BLOCKXSIZE", "512"));
    unsigned int nTileHeight =
        atoi(CSLFetchNameValueDef(papszOptions, "BLOCKYSIZE", "512"));

    /* -------------------------------------------------------------------- */
    /*      Try to create datasource.                                       */
    /* -------------------------------------------------------------------- */
    OGRSQLiteDataSource *poDS = new OGRSQLiteDataSource();

    if (CSLFetchNameValue(papszOptions, "APPEND_SUBDATASET"))
    {
        GDALOpenInfo oOpenInfo(pszName, GDAL_OF_RASTER | GDAL_OF_VECTOR |
                                            GDAL_OF_UPDATE);
        if (!poDS->Open(&oOpenInfo))
        {
            delete poDS;
            return nullptr;
        }
    }
    else
    {
        char **papszNewOptions = CSLDuplicate(papszOptions);
        papszNewOptions = CSLSetNameValue(papszNewOptions, "SPATIALITE", "YES");
        if (!poDS->Create(pszName, papszNewOptions))
        {
            CSLDestroy(papszNewOptions);
            delete poDS;
            return nullptr;
        }
        CSLDestroy(papszNewOptions);
    }

    /* -------------------------------------------------------------------- */
    /*      Try to get the SRS Id of this spatial reference system,         */
    /*      adding to the srs table if needed.                              */
    /* -------------------------------------------------------------------- */
    int nSRSId = 0;
    const char *pszSRID = CSLFetchNameValue(papszOptions, "SRID");

    if (pszSRID != nullptr)
    {
        nSRSId = atoi(pszSRID);
        if (nSRSId > 0)
        {
            OGRSpatialReference *poSRSFetched = poDS->FetchSRS(nSRSId);
            if (poSRSFetched == nullptr)
            {
                CPLError(CE_Warning, CPLE_AppDefined,
                         "SRID %d will be used, but no matching SRS is "
                         "defined in spatial_ref_sys",
                         nSRSId);
            }
        }
    }
    else
    {
        const OGRSpatialReference *poSRS = poSrcDS->GetSpatialRef();
        if (poSRS)
        {
            nSRSId = poDS->FetchSRSId(poSRS);
        }
    }

    poDS->StartTransaction();

    char **papszResults = nullptr;
    int nRowCount = 0;
    int nColCount = 0;
    sqlite3_get_table(poDS->GetDB(),
                      "SELECT * FROM sqlite_master WHERE "
                      "name = 'raster_coverages' AND type = 'table'",
                      &papszResults, &nRowCount, &nColCount, nullptr);
    sqlite3_free_table(papszResults);
    if (nRowCount == 0)
    {
        char *pszErrMsg = nullptr;
        int ret =
            sqlite3_exec(poDS->GetDB(), "SELECT CreateRasterCoveragesTable()",
                         nullptr, nullptr, &pszErrMsg);
        if (ret != SQLITE_OK)
        {
            CPLError(CE_Failure, CPLE_AppDefined,
                     "CreateRasterCoveragesTable() failed: %s", pszErrMsg);
            sqlite3_free(pszErrMsg);
            delete poDS;
            return nullptr;
        }
    }

    const std::string osCoverageName(CSLFetchNameValueDef(
        papszOptions, "COVERAGE", CPLGetBasenameSafe(pszName).c_str()));
    // Check if the coverage already exists
    rl2CoveragePtr cvg = nullptr;
    char *pszSQL = sqlite3_mprintf(
        "SELECT coverage_name "
        "FROM raster_coverages WHERE coverage_name = '%q' LIMIT 1",
        osCoverageName.c_str());
    sqlite3_get_table(poDS->GetDB(), pszSQL, &papszResults, &nRowCount,
                      &nColCount, nullptr);
    sqlite3_free(pszSQL);
    sqlite3_free_table(papszResults);
    if (nRowCount == 1)
    {
        cvg = rl2_create_coverage_from_dbms(poDS->GetDB(), nullptr,
                                            osCoverageName.c_str());
        if (cvg == nullptr)
        {
            delete poDS;
            return nullptr;
        }
    }

    rl2PalettePtr pPalette = nullptr;
    if (nPixelType == RL2_PIXEL_PALETTE)
    {
        GDALColorTable *poCT = poSrcDS->GetRasterBand(1)->GetColorTable();
        if (poCT == nullptr)
        {
            CPLError(CE_Failure, CPLE_AppDefined, "Missing color table");
            delete poDS;
            return nullptr;
        }

        const int nColors = poCT->GetColorEntryCount();
        pPalette = rl2_create_palette(nColors);
        for (int i = 0; i < nColors; ++i)
        {
            const GDALColorEntry *poCE = poCT->GetColorEntry(i);
            rl2_set_palette_color(pPalette, i, static_cast<GByte>(poCE->c1),
                                  static_cast<GByte>(poCE->c2),
                                  static_cast<GByte>(poCE->c3));
        }
    }

    if (cvg == nullptr)
    {
        const double dfXRes = gt[1];
        const double dfYRes = fabs(gt[5]);
        const bool bStrictResolution = true;
        const bool bMixedResolutions = false;
        const bool bSectionPaths = false;
        const bool bSectionMD5 = false;
        const bool bSectionSummary = false;
        const bool bIsQueryable = false;

        rl2PixelPtr pNoData =
            CreateNoData(nSampleType, nPixelType, nBandCount, poSrcDS);
        if (pNoData == nullptr)
        {
            delete poDS;
            if (pPalette)
                rl2_destroy_palette(pPalette);
            return nullptr;
        }

        if (rl2_create_dbms_coverage(
                poDS->GetDB(), osCoverageName.c_str(), nSampleType, nPixelType,
                nBandCount, nCompression, nQuality, nTileWidth, nTileHeight,
                nSRSId, dfXRes, dfYRes, pNoData, pPalette, bStrictResolution,
                bMixedResolutions, bSectionPaths, bSectionMD5, bSectionSummary,
                bIsQueryable) != RL2_OK)
        {
            CPLError(CE_Failure, CPLE_AppDefined,
                     "rl2_create_dbms_coverage() failed");
            rl2_destroy_pixel(pNoData);
            if (pPalette)
                rl2_destroy_palette(pPalette);
            delete poDS;
            return nullptr;
        }

        rl2_destroy_pixel(pNoData);
    }

    if (cvg == nullptr)
    {
        cvg = rl2_create_coverage_from_dbms(poDS->GetDB(), nullptr,
                                            osCoverageName.c_str());
        if (cvg == nullptr)
        {
            if (pPalette)
                rl2_destroy_palette(pPalette);
            delete poDS;
            return nullptr;
        }
    }

    if (gt[5] > 0)
        gt[5] = -gt[5];
    double dfXMin = gt[0];
    double dfXMax = dfXMin + gt[1] * poSrcDS->GetRasterXSize();
    double dfYMax = gt[3];
    double dfYMin = dfYMax + gt[5] * poSrcDS->GetRasterYSize();

    CPLString osSectionName(CSLFetchNameValueDef(
        papszOptions, "SECTION", CPLGetBasenameSafe(pszName).c_str()));
    const bool bPyramidize = CPLFetchBool(papszOptions, "PYRAMIDIZE", false);
    RasterLite2CallbackData cbk_data;
    cbk_data.poSrcDS = poSrcDS;
    cbk_data.nPixelType = nPixelType;
    cbk_data.nSampleType = nSampleType;
    cbk_data.pPalette = pPalette;
    cbk_data.pfnProgress = pfnProgress;
    cbk_data.pProgressData = pProgressData;
    cbk_data.gt = gt;

    if (rl2_load_raw_tiles_into_dbms(
            poDS->GetDB(), poDS->GetRL2Context(), cvg, osSectionName,
            poSrcDS->GetRasterXSize(), poSrcDS->GetRasterYSize(), nSRSId,
            dfXMin, dfYMin, dfXMax, dfYMax, RasterLite2Callback, &cbk_data,
            bPyramidize) != RL2_OK)
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "rl2_load_raw_tiles_into_dbms() failed");
        delete poDS;
        rl2_destroy_coverage(cvg);
        if (pPalette)
            rl2_destroy_palette(pPalette);
        return nullptr;
    }

    rl2_destroy_coverage(cvg);
    if (pPalette)
        rl2_destroy_palette(pPalette);

    poDS->CommitTransaction();

    delete poDS;

    poDS = new OGRSQLiteDataSource();
    GDALOpenInfo oOpenInfo(
        CPLSPrintf("RASTERLITE2:%s:%s",
                   EscapeNameAndQuoteIfNeeded(pszName).c_str(),
                   EscapeNameAndQuoteIfNeeded(osCoverageName.c_str()).c_str()),
        GDAL_OF_RASTER | GDAL_OF_UPDATE);
    poDS->Open(&oOpenInfo);
    return poDS;
}

/************************************************************************/
/*                          IBuildOverviews()                           */
/************************************************************************/

CPLErr OGRSQLiteDataSource::IBuildOverviews(
    const char *pszResampling, int nOverviews, const int *panOverviewList,
    int nBandsIn, const int * /*panBandList */,
    GDALProgressFunc /*pfnProgress*/, void * /*pProgressData*/,
    CSLConstList /* papszOptions */)

{
    if (nBandsIn != nBands)
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "Only build of all bands is supported");
    }

    if (nOverviews == 0)
    {
        int ret;
        if (m_bRL2MixedResolutions && m_nSectionId >= 0)
        {
            ret =
                rl2_delete_section_pyramid(hDB, m_osCoverageName, m_nSectionId);
        }
        else
        {
            ret = rl2_delete_all_pyramids(hDB, m_osCoverageName);
        }
        if (ret != RL2_OK)
        {
            CPLError(CE_Failure, CPLE_AppDefined,
                     "Deletion of pyramids failed");
            return CE_Failure;
        }
    }
    else
    {
        if (!STARTS_WITH_CI(pszResampling, "NEAR"))
        {
            CPLError(CE_Warning, CPLE_AppDefined,
                     "Resampling method is ignored. Using librasterlite2 own "
                     "method");
        }
        for (int i = 0; i < nOverviews; ++i)
        {
            if (!CPLIsPowerOfTwo(panOverviewList[i]))
            {
                CPLError(CE_Failure, CPLE_NotSupported,
                         "Only power-of-two overview factors are supported");
                return CE_Failure;
            }
        }

        const int bForcedRebuild = 1;
        const int bVerbose = 0;
        const int bVirtualLevels = 1;
        int ret;
        if (m_bRL2MixedResolutions)
        {
            if (m_nSectionId >= 0)
            {
                ret = rl2_build_section_pyramid(hDB, GetRL2Context(),
                                                m_osCoverageName, m_nSectionId,
                                                bForcedRebuild, bVerbose);
            }
            else
            {
                ret = rl2_build_monolithic_pyramid(hDB, GetRL2Context(),
                                                   m_osCoverageName,
                                                   bVirtualLevels, bVerbose);
            }
        }
        else
        {
            ret = rl2_build_monolithic_pyramid(hDB, GetRL2Context(),
                                               m_osCoverageName, bVirtualLevels,
                                               bVerbose);
        }
        if (ret != RL2_OK)
        {
            CPLError(CE_Failure, CPLE_AppDefined, "Build of pyramids failed");
            return CE_Failure;
        }
    }

    for (size_t i = 0; i < m_apoOverviewDS.size(); ++i)
        delete m_apoOverviewDS[i];
    m_apoOverviewDS.clear();
    ListOverviews();

    return CE_None;
}

#endif  // HAVE_RASTERLITE2

/************************************************************************/
/*                             GetMetadata()                            */
/************************************************************************/

char **OGRSQLiteDataSource::GetMetadata(const char *pszDomain)
{
    if (pszDomain != nullptr && EQUAL(pszDomain, "SUBDATASETS") &&
        m_aosSubDatasets.size() > 2)
    {
        return m_aosSubDatasets.List();
    }
    return GDALPamDataset::GetMetadata(pszDomain);
}

/************************************************************************/
/*                           GetGeoTransform()                          */
/************************************************************************/

CPLErr OGRSQLiteDataSource::GetGeoTransform(GDALGeoTransform &gt) const
{
    if (m_bGeoTransformValid)
    {
        gt = m_gt;
        return CE_None;
    }
    return GDALPamDataset::GetGeoTransform(gt);
}

/************************************************************************/
/*                            GetSpatialRef()                           */
/************************************************************************/

const OGRSpatialReference *OGRSQLiteDataSource::GetSpatialRef() const
{
    if (!m_oSRS.IsEmpty())
        return &m_oSRS;
    return GDALPamDataset::GetSpatialRef();
}

OSGeo / gdal / 15885686134

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