Coverage Report

Created: 2026-02-14 09:00

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/src/gdal/frmts/nitf/nitfbilevel.cpp
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/******************************************************************************
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 *
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 * Project:  NITF Read/Write Library
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 * Purpose:  Module implement BILEVEL (C1) compressed image reading.
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 * Author:   Frank Warmerdam, warmerdam@pobox.com
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 *
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 **********************************************************************
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 * Copyright (c) 2007, Frank Warmerdam
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 * Copyright (c) 2009, Even Rouault <even dot rouault at spatialys.com>
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 *
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 * SPDX-License-Identifier: MIT
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 ****************************************************************************/
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#include "cpl_port.h"
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#include "nitflib.h"
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#include <cstring>
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#include "cpl_conv.h"
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#include "cpl_string.h"
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#include "cpl_vsi.h"
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#include "gdal.h"
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// #include "tiff.h"
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CPL_C_START
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#include "tiffio.h"
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CPL_C_END
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#include "tifvsi.h"
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/************************************************************************/
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/*                       NITFUncompressBILEVEL()                        */
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/************************************************************************/
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int NITFUncompressBILEVEL(NITFImage *psImage, GByte *pabyInputData,
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                          int nInputBytes, GByte *pabyOutputImage)
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{
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    /* -------------------------------------------------------------------- */
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    /*      Write memory TIFF with the bilevel data.                        */
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    /* -------------------------------------------------------------------- */
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    const int nOutputBytes =
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        (psImage->nBlockWidth * psImage->nBlockHeight + 7) / 8;
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    const CPLString osFilename(
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        VSIMemGenerateHiddenFilename("nitf_bilevel.tif"));
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    VSILFILE *fpL = VSIFOpenL(osFilename, "w+");
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    if (fpL == nullptr)
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        return FALSE;
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    TIFF *hTIFF = VSI_TIFFOpen(osFilename, "w+", fpL);
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    if (hTIFF == nullptr)
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    {
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        CPL_IGNORE_RET_VAL(VSIFCloseL(fpL));
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        return FALSE;
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    }
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    TIFFSetField(hTIFF, TIFFTAG_IMAGEWIDTH, psImage->nBlockWidth);
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    TIFFSetField(hTIFF, TIFFTAG_IMAGELENGTH, psImage->nBlockHeight);
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    TIFFSetField(hTIFF, TIFFTAG_BITSPERSAMPLE, 1);
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    TIFFSetField(hTIFF, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
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    TIFFSetField(hTIFF, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
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    TIFFSetField(hTIFF, TIFFTAG_FILLORDER, FILLORDER_MSB2LSB);
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    TIFFSetField(hTIFF, TIFFTAG_ROWSPERSTRIP, psImage->nBlockHeight);
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    TIFFSetField(hTIFF, TIFFTAG_SAMPLESPERPIXEL, 1);
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    TIFFSetField(hTIFF, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
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    TIFFSetField(hTIFF, TIFFTAG_COMPRESSION, COMPRESSION_CCITTFAX3);
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    if (psImage->szCOMRAT[0] == '2')
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        TIFFSetField(hTIFF, TIFFTAG_GROUP3OPTIONS, GROUP3OPT_2DENCODING);
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    TIFFWriteRawStrip(hTIFF, 0, pabyInputData, nInputBytes);
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    TIFFWriteDirectory(hTIFF);
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    TIFFClose(hTIFF);
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    /* -------------------------------------------------------------------- */
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    /*      Now open and read it back.                                      */
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    /* -------------------------------------------------------------------- */
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    bool bResult = true;
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    hTIFF = VSI_TIFFOpen(osFilename, "r", fpL);
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    if (hTIFF == nullptr)
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    {
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        CPL_IGNORE_RET_VAL(VSIFCloseL(fpL));
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        return FALSE;
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    }
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    if (TIFFReadEncodedStrip(hTIFF, 0, pabyOutputImage, nOutputBytes) == -1)
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    {
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        memset(pabyOutputImage, 0, nOutputBytes);
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        bResult = false;
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    }
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    TIFFClose(hTIFF);
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    CPL_IGNORE_RET_VAL(VSIFCloseL(fpL));
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    VSIUnlink(osFilename);
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    return bResult;
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}