lautiff2pdfobject.cpp

#include "lautiff2pdfobject.h"

using namespace libtiff;

static void
t2p_disable(TIFF *tif)
{
    T2P *t2p = (T2P *) TIFFClientdata(tif);
    t2p->outputdisable = 1;
}

static void
t2p_enable(TIFF *tif)
{
    T2P *t2p = (T2P *) TIFFClientdata(tif);
    t2p->outputdisable = 0;
}

/*
 * Procs for TIFFClientOpen
 */

static tmsize_t
t2pReadFile(TIFF *tif, tdata_t data, tmsize_t size)
{
    thandle_t client = TIFFClientdata(tif);
    TIFFReadWriteProc proc = TIFFGetReadProc(tif);
    if (proc) {
        return proc(client, data, size);
    }
    return -1;
}

static tmsize_t
t2pWriteFile(TIFF *tif, tdata_t data, tmsize_t size)
{
    thandle_t client = TIFFClientdata(tif);
    TIFFReadWriteProc proc = TIFFGetWriteProc(tif);
    if (proc) {
        return proc(client, data, size);
    }
    return -1;
}

static uint64
t2pSeekFile(TIFF *tif, toff_t offset, int whence)
{
    thandle_t client = TIFFClientdata(tif);
    TIFFSeekProc proc = TIFFGetSeekProc(tif);
    if (proc) {
        return proc(client, offset, whence);
    }
    return -1;
}

static tmsize_t
t2p_readproc(thandle_t handle, tdata_t data, tmsize_t size)
{
    (void) handle, (void) data, (void) size;
    return -1;
}

static tmsize_t
t2p_writeproc(thandle_t handle, tdata_t data, tmsize_t size)
{
    T2P *t2p = (T2P *) handle;
    if (t2p->outputdisable <= 0 && t2p->outputfile) {
        tsize_t written = fwrite(data, 1, size, t2p->outputfile);
        t2p->outputwritten += written;
        return written;
    }
    return size;
}

static uint64
t2p_seekproc(thandle_t handle, uint64 offset, int whence)
{
    T2P *t2p = (T2P *) handle;
    if (t2p->outputdisable <= 0 && t2p->outputfile) {
        return fseek(t2p->outputfile, (long) offset, whence);
    }
    return offset;
}

static int
t2p_closeproc(thandle_t handle)
{
    T2P *t2p = (T2P *) handle;
    fclose(t2p->outputfile);

    (void) handle;
    return 0;
}

static uint64
t2p_sizeproc(thandle_t handle)
{
    (void) handle;
    return -1;
}

static int
t2p_mapproc(thandle_t handle, void **data, toff_t *offset)
{
    (void) handle, (void) data, (void) offset;
    return -1;
}

static void
t2p_unmapproc(thandle_t handle, void *data, toff_t offset)
{
    (void) handle, (void) data, (void) offset;
}

static uint64
checkAdd64(uint64 summand1, uint64 summand2, T2P *t2p)
{
    uint64 bytes = summand1 + summand2;

    if (bytes - summand1 != summand2) {
        TIFFError(TIFF2PDF_MODULE, "Integer overflow");
        t2p->t2p_error = T2P_ERR_ERROR;
        bytes = 0;
    }

    return bytes;
}

static uint64
checkMultiply64(uint64 first, uint64 second, T2P *t2p)
{
    uint64 bytes = first * second;

    if (second && bytes / second != first) {
        TIFFError(TIFF2PDF_MODULE, "Integer overflow");
        t2p->t2p_error = T2P_ERR_ERROR;
        bytes = 0;
    }

    return bytes;
}

/*

  This is the main function.

  The program converts one TIFF file to one PDF file, including multiple page
  TIFF files, tiled TIFF files, black and white. grayscale, and color TIFF
  files that contain data of TIFF photometric interpretations of bilevel,
  grayscale, RGB, YCbCr, CMYK separation, and ICC L*a*b* as supported by
  libtiff and PDF.

  If you have multiple TIFF files to convert into one PDF file then use tiffcp
  or other program to concatenate the files into a multiple page TIFF file.
  If the input TIFF file is of huge dimensions (greater than 10000 pixels height
  or width) convert the input image to a tiled TIFF if it is not already.

  The standard output is standard output.  Set the output file name with the
  "-o output.pdf" option.

  All black and white files are compressed into a single strip CCITT G4 Fax
  compressed PDF, unless tiled, where tiled black and white images are
  compressed into tiled CCITT G4 Fax compressed PDF, libtiff CCITT support
  is assumed.

  Color and grayscale data can be compressed using either JPEG compression,
  ITU-T T.81, or Zip/Deflate LZ77 compression, per PNG 1.2 and RFC 1951.  Set
  the compression type using the -j or -z options.  JPEG compression support
  requires that libtiff be configured with JPEG support, and Zip/Deflate
  compression support requires that libtiff is configured with Zip support,
  in tiffconf.h.  Use only one or the other of -j and -z.  The -q option
  sets the image compression quality, that is 1-100 with libjpeg JPEG
  compression and one of 1, 10, 11, 12, 13, 14, or 15 for PNG group compression
  predictor methods, add 100, 200, ..., 900 to set zlib compression quality 1-9.
  PNG Group differencing predictor methods are not currently implemented.

  If the input TIFF contains single strip CCITT G4 Fax compressed information,
  then that is written to the PDF file without transcoding, unless the options
  of no compression and no passthrough are set, -d and -n.

  If the input TIFF contains JPEG or single strip Zip/Deflate compressed
  information, and they are configured, then that is written to the PDF file
  without transcoding, unless the options of no compression and no passthrough
  are set.

  The default page size upon which the TIFF image is placed is determined by
  the resolution and extent of the image data.  Default values for the TIFF
  image resolution can be set using the -x and -y options.  The page size can
  be set using the -p option for paper size, or -w and -l for paper width and
  length, then each page of the TIFF image is centered on its page.  The
  distance unit for default resolution and page width and length can be set
  by the -u option, the default unit is inch.

  Various items of the output document information can be set with the -e, -c,
  -a, -t, -s, and -k tags.  Setting the argument of the option to "" for these
  tags causes the relevant document information field to be not written.  Some
  of the document information values otherwise get their information from the
  input TIFF image, the software, author, document name, and image description.

  The output PDF file conforms to the PDF 1.1 specification or PDF 1.2 if using
  Zip/Deflate compression.

  The Portable Document Format (PDF) specification is copyrighted by Adobe
  Systems, Incorporated.  Todos derechos reservados.

  Here is a listing of the usage example and the options to the tiff2pdf
  program that is part of the libtiff distribution.  Options followed by
  a colon have a required argument.

    usage:  tiff2pdf [options] input.tif

    options:
    -o: output to file name

    -j: compress with JPEG (requires libjpeg configured with libtiff)
    -z: compress with Zip/Deflate (requires zlib configured with libtiff)
    -q: compression quality
    -n: no compressed data passthrough
    -d: do not compress (decompress)
    -i: invert colors
    -u: set distance unit, 'i' for inch, 'm' for centimeter
    -x: set x resolution default
    -y: set y resolution default
    -w: width in units
    -l: length in units
    -r: 'd' for resolution default, 'o' for resolution override
    -p: paper size, eg "letter", "legal", "a4"
    -F: make the tiff fill the PDF page
    -f: set pdf "fit window" user preference
    -b:	set PDF "Interpolate" user preference
    -e: date, overrides image or current date/time default, YYYYMMDDHHMMSS
    -c: creator, overrides image software default
    -a: author, overrides image artist default
    -t: title, overrides image document name default
    -s: subject, overrides image image description default
    -k: keywords

    -h: usage

    examples:

        tiff2pdf -o output.pdf input.tiff

    The above example would generate the file output.pdf from input.tiff.

        tiff2pdf input.tiff

    The above example would generate PDF output from input.tiff and write it
    to standard output.

        tiff2pdf -j -p letter -o output.pdf input.tiff

    The above example would generate the file output.pdf from input.tiff,
    putting the image pages on a letter sized page, compressing the output
    with JPEG.

    Please report bugs through:

    http://bugzilla.remotesensing.org/buglist.cgi?product=libtiff

    See also libtiff.3t, tiffcp.
  */

int tiff2pdf_match_paper_size(float *width, float *length, char *papersize)
{
    size_t i, len;
    const char *sizes[] = {
        "LETTER", "A4", "LEGAL",
        "EXECUTIVE", "LETTER", "LEGAL", "LEDGER", "TABLOID",
        "A", "B", "C", "D", "E", "F", "G", "H", "J", "K",
        "A10", "A9", "A8", "A7", "A6", "A5", "A4", "A3", "A2", "A1", "A0",
        "2A0", "4A0", "2A", "4A",
        "B10", "B9", "B8", "B7", "B6", "B5", "B4", "B3", "B2", "B1", "B0",
        "JISB10", "JISB9", "JISB8", "JISB7", "JISB6", "JISB5", "JISB4",
        "JISB3", "JISB2", "JISB1", "JISB0",
        "C10", "C9", "C8", "C7", "C6", "C5", "C4", "C3", "C2", "C1", "C0",
        "RA2", "RA1", "RA0", "SRA4", "SRA3", "SRA2", "SRA1", "SRA0",
        "A3EXTRA", "A4EXTRA",
        "STATEMENT", "FOLIO", "QUARTO",
        nullptr
    } ;
    const int widths[] = {
        612, 595, 612,
        522, 612, 612, 792, 792,
        612, 792, 1224, 1584, 2448, 2016, 792, 2016, 2448, 2880,
        74, 105, 147, 210, 298, 420, 595, 842, 1191, 1684, 2384, 3370, 4768, 3370, 4768,
        88, 125, 176, 249, 354, 499, 709, 1001, 1417, 2004, 2835,
        91, 128, 181, 258, 363, 516, 729, 1032, 1460, 2064, 2920,
        79, 113, 162, 230, 323, 459, 649, 918, 1298, 1298, 2599,
        1219, 1729, 2438, 638, 907, 1276, 1814, 2551,
        914, 667,
        396, 612, 609,
        0
    };
    const int lengths[] = {
        792, 842, 1008,
        756, 792, 1008, 1224, 1224,
        792, 1224, 1584, 2448, 3168, 2880, 6480, 10296, 12672, 10296,
        105, 147, 210, 298, 420, 595, 842, 1191, 1684, 2384, 3370, 4768, 6741, 4768, 6741,
        125, 176, 249, 354, 499, 709, 1001, 1417, 2004, 2835, 4008,
        128, 181, 258, 363, 516, 729, 1032, 1460, 2064, 2920, 4127,
        113, 162, 230, 323, 459, 649, 918, 1298, 1837, 1837, 3677,
        1729, 2438, 3458, 907, 1276, 1814, 2551, 3628,
        1262, 914,
        612, 936, 780,
        0
    };

    len = strlen(papersize);
    for (i = 0; i < len; i++) {
        papersize[i] = toupper(papersize[i]);
    }
    for (i = 0; sizes[i] != nullptr; i++) {
        if (strcmp((const char *)papersize, sizes[i]) == 0) {
            *width = (float)widths[i];
            *length = (float)lengths[i];
            return (1);
        }
    }

    return (0);
}

/*
 * This function allocates and initializes a T2P context struct pointer.
 */

T2P *t2p_init()
{
    T2P *t2p = (T2P *) _TIFFmalloc(sizeof(T2P));
    if (t2p == nullptr) {
        TIFFError(
            TIFF2PDF_MODULE,
            "Can't allocate %lu bytes of memory for t2p_init",
            (unsigned long) sizeof(T2P));
        return ((T2P *) nullptr);
    }
    _TIFFmemset(t2p, 0x00, sizeof(T2P));
    t2p->pdf_majorversion = 1;
    t2p->pdf_minorversion = 1;
    t2p->pdf_defaultxres = 300.0;
    t2p->pdf_defaultyres = 300.0;
    t2p->pdf_defaultpagewidth = 612.0;
    t2p->pdf_defaultpagelength = 792.0;
    t2p->pdf_xrefcount = 3; /* Catalog, Info, Pages */

    return (t2p);
}

/*
 * This function frees a T2P context struct pointer and any allocated data fields of it.
 */

void t2p_free(T2P *t2p)
{
    int i = 0;

    if (t2p != nullptr) {
        if (t2p->pdf_xrefoffsets != nullptr) {
            _TIFFfree((tdata_t) t2p->pdf_xrefoffsets);
        }
        if (t2p->tiff_pages != nullptr) {
            _TIFFfree((tdata_t) t2p->tiff_pages);
        }
        for (i = 0; i < t2p->tiff_pagecount; i++) {
            if (t2p->tiff_tiles[i].tiles_tiles != nullptr) {
                _TIFFfree((tdata_t) t2p->tiff_tiles[i].tiles_tiles);
            }
        }
        if (t2p->tiff_tiles != nullptr) {
            _TIFFfree((tdata_t) t2p->tiff_tiles);
        }
        if (t2p->pdf_palette != nullptr) {
            _TIFFfree((tdata_t) t2p->pdf_palette);
        }
#ifdef OJPEG_SUPPORT
        if (t2p->pdf_ojpegdata != nullptr) {
            _TIFFfree((tdata_t) t2p->pdf_ojpegdata);
        }
#endif
        _TIFFfree((tdata_t) t2p);
    }

    return;
}

/*
    This function validates the values of a T2P context struct pointer
        before calling t2p_write_pdf with it.
*/

void t2p_validate(T2P *t2p)
{

#ifdef JPEG_SUPPORT
    if (t2p->pdf_defaultcompression == T2P_COMPRESS_JPEG) {
        if (t2p->pdf_defaultcompressionquality > 100 ||
            t2p->pdf_defaultcompressionquality < 1) {
            t2p->pdf_defaultcompressionquality = 0;
        }
    }
#endif
#ifdef ZIP_SUPPORT
    if (t2p->pdf_defaultcompression == T2P_COMPRESS_ZIP) {
        uint16 m = t2p->pdf_defaultcompressionquality % 100;
        if (t2p->pdf_defaultcompressionquality / 100 > 9 ||
            (m > 1 && m < 10) || m > 15) {
            t2p->pdf_defaultcompressionquality = 0;
        }
        if (t2p->pdf_defaultcompressionquality % 100 != 0) {
            t2p->pdf_defaultcompressionquality /= 100;
            t2p->pdf_defaultcompressionquality *= 100;
            TIFFError(
                TIFF2PDF_MODULE,
                "PNG Group predictor differencing not implemented, assuming compression quality %u",
                t2p->pdf_defaultcompressionquality);
        }
        t2p->pdf_defaultcompressionquality %= 100;
        if (t2p->pdf_minorversion < 2) {
            t2p->pdf_minorversion = 2;
        }
    }
#endif
    (void)0;

    return;
}


/*
    This function scans the input TIFF file for pages.  It attempts
        to determine which IFD's of the TIFF file contain image document
        pages.  For each, it gathers some information that has to do
        with the output of the PDF document as a whole.
*/

void t2p_read_tiff_init(T2P *t2p, TIFF *input)
{

    tdir_t directorycount = 0;
    tdir_t i = 0;
    uint16 pagen = 0;
    uint16 paged = 0;
    uint16 xuint16 = 0;

    directorycount = TIFFNumberOfDirectories(input);
    t2p->tiff_pages = (T2P_PAGE *) _TIFFmalloc(directorycount * sizeof(T2P_PAGE));
    if (t2p->tiff_pages == nullptr) {
        TIFFError(
            TIFF2PDF_MODULE,
            "Can't allocate %lu bytes of memory for tiff_pages array, %s",
            (unsigned long) directorycount * sizeof(T2P_PAGE),
            TIFFFileName(input));
        t2p->t2p_error = T2P_ERR_ERROR;
        return;
    }
    _TIFFmemset(t2p->tiff_pages, 0x00, directorycount * sizeof(T2P_PAGE));
    t2p->tiff_tiles = (T2P_TILES *) _TIFFmalloc(directorycount * sizeof(T2P_TILES));
    if (t2p->tiff_tiles == nullptr) {
        TIFFError(
            TIFF2PDF_MODULE,
            "Can't allocate %lu bytes of memory for tiff_tiles array, %s",
            (unsigned long) directorycount * sizeof(T2P_TILES),
            TIFFFileName(input));
        t2p->t2p_error = T2P_ERR_ERROR;
        return;
    }
    _TIFFmemset(t2p->tiff_tiles, 0x00, directorycount * sizeof(T2P_TILES));
    for (i = 0; i < directorycount; i++) {
        uint32 subfiletype = 0;

        if (!TIFFSetDirectory(input, i)) {
            TIFFError(
                TIFF2PDF_MODULE,
                "Can't set directory %u of input file %s",
                i,
                TIFFFileName(input));
            t2p->t2p_error = T2P_ERR_ERROR;
            return;
        }
        if (TIFFGetField(input, TIFFTAG_PAGENUMBER, &pagen, &paged)) {
            if ((pagen > paged) && (paged != 0)) {
                t2p->tiff_pages[t2p->tiff_pagecount].page_number =
                    paged;
            } else {
                t2p->tiff_pages[t2p->tiff_pagecount].page_number =
                    pagen;
            }
            goto ispage2;
        }
        if (TIFFGetField(input, TIFFTAG_SUBFILETYPE, &subfiletype)) {
            if (((subfiletype & FILETYPE_PAGE) != 0)
                || (subfiletype == 0)) {
                goto ispage;
            } else {
                goto isnotpage;
            }
        }
        if (TIFFGetField(input, TIFFTAG_OSUBFILETYPE, &subfiletype)) {
            if ((subfiletype == OFILETYPE_IMAGE)
                || (subfiletype == OFILETYPE_PAGE)
                || (subfiletype == 0)) {
                goto ispage;
            } else {
                goto isnotpage;
            }
        }
ispage:
        t2p->tiff_pages[t2p->tiff_pagecount].page_number = t2p->tiff_pagecount;
ispage2:
        t2p->tiff_pages[t2p->tiff_pagecount].page_directory = i;
        if (TIFFIsTiled(input)) {
            t2p->tiff_pages[t2p->tiff_pagecount].page_tilecount =
                TIFFNumberOfTiles(input);
        }
        t2p->tiff_pagecount++;
isnotpage:
        (void)0;
    }

    qsort((void *) t2p->tiff_pages, t2p->tiff_pagecount,
          sizeof(T2P_PAGE), t2p_cmp_t2p_page);

    for (i = 0; i < t2p->tiff_pagecount; i++) {
        t2p->pdf_xrefcount += 5;
        TIFFSetDirectory(input, t2p->tiff_pages[i].page_directory);
        if ((TIFFGetField(input, TIFFTAG_PHOTOMETRIC, &xuint16)
             && (xuint16 == PHOTOMETRIC_PALETTE))
            || TIFFGetField(input, TIFFTAG_INDEXED, &xuint16)) {
            t2p->tiff_pages[i].page_extra++;
            t2p->pdf_xrefcount++;
        }
#ifdef ZIP_SUPPORT
        if (TIFFGetField(input, TIFFTAG_COMPRESSION, &xuint16)) {
            if ((xuint16 == COMPRESSION_DEFLATE ||
                 xuint16 == COMPRESSION_ADOBE_DEFLATE) &&
                ((t2p->tiff_pages[i].page_tilecount != 0)
                 || TIFFNumberOfStrips(input) == 1) &&
                (t2p->pdf_nopassthrough == 0)) {
                if (t2p->pdf_minorversion < 2) {
                    t2p->pdf_minorversion = 2;
                }
            }
        }
#endif
        if (TIFFGetField(input, TIFFTAG_TRANSFERFUNCTION,
                         &(t2p->tiff_transferfunction[0]),
                         &(t2p->tiff_transferfunction[1]),
                         &(t2p->tiff_transferfunction[2]))) {
            if (t2p->tiff_transferfunction[1] !=
                t2p->tiff_transferfunction[0]) {
                t2p->tiff_transferfunctioncount = 3;
                t2p->tiff_pages[i].page_extra += 4;
                t2p->pdf_xrefcount += 4;
            } else {
                t2p->tiff_transferfunctioncount = 1;
                t2p->tiff_pages[i].page_extra += 2;
                t2p->pdf_xrefcount += 2;
            }
            if (t2p->pdf_minorversion < 2) {
                t2p->pdf_minorversion = 2;
            }
        } else {
            t2p->tiff_transferfunctioncount = 0;
        }
        if (TIFFGetField(
                input,
                TIFFTAG_ICCPROFILE,
                &(t2p->tiff_iccprofilelength),
                &(t2p->tiff_iccprofile)) != 0) {
            t2p->tiff_pages[i].page_extra++;
            t2p->pdf_xrefcount++;
            if (t2p->pdf_minorversion < 3) {
                t2p->pdf_minorversion = 3;
            }
        }
        t2p->tiff_tiles[i].tiles_tilecount =
            t2p->tiff_pages[i].page_tilecount;
        if ((TIFFGetField(input, TIFFTAG_PLANARCONFIG, &xuint16) != 0)
            && (xuint16 == PLANARCONFIG_SEPARATE)) {
            TIFFGetField(input, TIFFTAG_SAMPLESPERPIXEL, &xuint16);
            t2p->tiff_tiles[i].tiles_tilecount /= xuint16;
        }
        if (t2p->tiff_tiles[i].tiles_tilecount > 0) {
            t2p->pdf_xrefcount +=
                (t2p->tiff_tiles[i].tiles_tilecount - 1) * 2;
            TIFFGetField(input,
                         TIFFTAG_TILEWIDTH,
                         &(t2p->tiff_tiles[i].tiles_tilewidth));
            TIFFGetField(input,
                         TIFFTAG_TILELENGTH,
                         &(t2p->tiff_tiles[i].tiles_tilelength));
            t2p->tiff_tiles[i].tiles_tiles =
                (T2P_TILE *) _TIFFmalloc(
                    t2p->tiff_tiles[i].tiles_tilecount
                    * sizeof(T2P_TILE));
            if (t2p->tiff_tiles[i].tiles_tiles == nullptr) {
                TIFFError(
                    TIFF2PDF_MODULE,
                    "Can't allocate %lu bytes of memory for t2p_read_tiff_init, %s",
                    (unsigned long) t2p->tiff_tiles[i].tiles_tilecount * sizeof(T2P_TILE),
                    TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return;
            }
        }
    }

    return;
}

/*
 * This function is used by qsort to sort a T2P_PAGE* array of page structures
 * by page number.
 */

int t2p_cmp_t2p_page(const void *e1, const void *e2)
{

    return (((T2P_PAGE *)e1)->page_number - ((T2P_PAGE *)e2)->page_number);
}

/*
    This function sets the input directory to the directory of a given
    page and determines information about the image.  It checks
    the image characteristics to determine if it is possible to convert
    the image data into a page of PDF output, setting values of the T2P
    struct for this page.  It determines what color space is used in
    the output PDF to represent the image.

    It determines if the image can be converted as raw data without
    requiring transcoding of the image data.
*/

void t2p_read_tiff_data(T2P *t2p, TIFF *input)
{

    int i = 0;
    uint16 *r;
    uint16 *g;
    uint16 *b;
    uint16 *a;
    uint16 xuint16;
    uint16 *xuint16p;
    float *xfloatp;

    t2p->pdf_transcode = T2P_TRANSCODE_ENCODE;
    t2p->pdf_sample = T2P_SAMPLE_NOTHING;
    t2p->pdf_switchdecode = t2p->pdf_colorspace_invert;


    TIFFSetDirectory(input, t2p->tiff_pages[t2p->pdf_page].page_directory);

    TIFFGetField(input, TIFFTAG_IMAGEWIDTH, &(t2p->tiff_width));
    if (t2p->tiff_width == 0) {
        TIFFError(
            TIFF2PDF_MODULE,
            "No support for %s with zero width",
            TIFFFileName(input));
        t2p->t2p_error = T2P_ERR_ERROR;
        return;
    }

    TIFFGetField(input, TIFFTAG_IMAGELENGTH, &(t2p->tiff_length));
    if (t2p->tiff_length == 0) {
        TIFFError(
            TIFF2PDF_MODULE,
            "No support for %s with zero length",
            TIFFFileName(input));
        t2p->t2p_error = T2P_ERR_ERROR;
        return;
    }

    if (TIFFGetField(input, TIFFTAG_COMPRESSION, &(t2p->tiff_compression)) == 0) {
        TIFFError(
            TIFF2PDF_MODULE,
            "No support for %s with no compression tag",
            TIFFFileName(input));
        t2p->t2p_error = T2P_ERR_ERROR;
        return;

    }
    if (TIFFIsCODECConfigured(t2p->tiff_compression) == 0) {
        TIFFError(
            TIFF2PDF_MODULE,
            "No support for %s with compression type %u:  not configured",
            TIFFFileName(input),
            t2p->tiff_compression
        );
        t2p->t2p_error = T2P_ERR_ERROR;
        return;

    }

    TIFFGetFieldDefaulted(input, TIFFTAG_BITSPERSAMPLE, &(t2p->tiff_bitspersample));
    switch (t2p->tiff_bitspersample) {
        case 1:
        case 2:
        case 4:
        case 8:
            break;
        case 0:
            TIFFWarning(
                TIFF2PDF_MODULE,
                "Image %s has 0 bits per sample, assuming 1",
                TIFFFileName(input));
            t2p->tiff_bitspersample = 1;
            break;
        default:
            TIFFError(
                TIFF2PDF_MODULE,
                "No support for %s with %u bits per sample",
                TIFFFileName(input),
                t2p->tiff_bitspersample);
            t2p->t2p_error = T2P_ERR_ERROR;
            return;
    }

    TIFFGetFieldDefaulted(input, TIFFTAG_SAMPLESPERPIXEL, &(t2p->tiff_samplesperpixel));
    if (t2p->tiff_samplesperpixel > 4) {
        TIFFError(
            TIFF2PDF_MODULE,
            "No support for %s with %u samples per pixel",
            TIFFFileName(input),
            t2p->tiff_samplesperpixel);
        t2p->t2p_error = T2P_ERR_ERROR;
        return;
    }
    if (t2p->tiff_samplesperpixel == 0) {
        TIFFWarning(
            TIFF2PDF_MODULE,
            "Image %s has 0 samples per pixel, assuming 1",
            TIFFFileName(input));
        t2p->tiff_samplesperpixel = 1;
    }

    if (TIFFGetField(input, TIFFTAG_SAMPLEFORMAT, &xuint16) != 0) {
        switch (xuint16) {
            case 0:
            case 1:
            case 4:
                break;
            default:
                TIFFError(
                    TIFF2PDF_MODULE,
                    "No support for %s with sample format %u",
                    TIFFFileName(input),
                    xuint16);
                t2p->t2p_error = T2P_ERR_ERROR;
                return;
                break;
        }
    }

    TIFFGetFieldDefaulted(input, TIFFTAG_FILLORDER, &(t2p->tiff_fillorder));

    if (TIFFGetField(input, TIFFTAG_PHOTOMETRIC, &(t2p->tiff_photometric)) == 0) {
        TIFFError(
            TIFF2PDF_MODULE,
            "No support for %s with no photometric interpretation tag",
            TIFFFileName(input));
        t2p->t2p_error = T2P_ERR_ERROR;
        return;

    }

    switch (t2p->tiff_photometric) {
        case PHOTOMETRIC_MINISWHITE:
        case PHOTOMETRIC_MINISBLACK:
            if (t2p->tiff_bitspersample == 1) {
                t2p->pdf_colorspace = T2P_CS_BILEVEL;
                if (t2p->tiff_photometric == PHOTOMETRIC_MINISWHITE) {
                    t2p->pdf_switchdecode ^= 1;
                }
            } else {
                t2p->pdf_colorspace = T2P_CS_GRAY;
                if (t2p->tiff_photometric == PHOTOMETRIC_MINISWHITE) {
                    t2p->pdf_switchdecode ^= 1;
                }
            }
            break;
        case PHOTOMETRIC_RGB:
            t2p->pdf_colorspace = T2P_CS_RGB;
            if (t2p->tiff_samplesperpixel == 3) {
                break;
            }
            if (TIFFGetField(input, TIFFTAG_INDEXED, &xuint16)) {
                if (xuint16 == 1) {
                    goto photometric_palette;
                }
            }
            if (t2p->tiff_samplesperpixel > 3) {
                if (t2p->tiff_samplesperpixel == 4) {
                    t2p->pdf_colorspace = T2P_CS_RGB;
                    if (TIFFGetField(input,
                                     TIFFTAG_EXTRASAMPLES,
                                     &xuint16, &xuint16p)
                        && xuint16 == 1) {
                        if (xuint16p[0] == EXTRASAMPLE_ASSOCALPHA) {
                            t2p->pdf_sample = T2P_SAMPLE_RGBAA_TO_RGB;
                            break;
                        }
                        if (xuint16p[0] == EXTRASAMPLE_UNASSALPHA) {
                            t2p->pdf_sample = T2P_SAMPLE_RGBA_TO_RGB;
                            break;
                        }
                        TIFFWarning(
                            TIFF2PDF_MODULE,
                            "RGB image %s has 4 samples per pixel, assuming RGBA",
                            TIFFFileName(input));
                        break;
                    }
                    t2p->pdf_colorspace = T2P_CS_CMYK;
                    t2p->pdf_switchdecode ^= 1;
                    TIFFWarning(
                        TIFF2PDF_MODULE,
                        "RGB image %s has 4 samples per pixel, assuming inverse CMYK",
                        TIFFFileName(input));
                    break;
                } else {
                    TIFFError(
                        TIFF2PDF_MODULE,
                        "No support for RGB image %s with %u samples per pixel",
                        TIFFFileName(input),
                        t2p->tiff_samplesperpixel);
                    t2p->t2p_error = T2P_ERR_ERROR;
                    break;
                }
            } else {
                TIFFError(
                    TIFF2PDF_MODULE,
                    "No support for RGB image %s with %u samples per pixel",
                    TIFFFileName(input),
                    t2p->tiff_samplesperpixel);
                t2p->t2p_error = T2P_ERR_ERROR;
                break;
            }
        case PHOTOMETRIC_PALETTE:
photometric_palette:
            if (t2p->tiff_samplesperpixel != 1) {
                TIFFError(
                    TIFF2PDF_MODULE,
                    "No support for palettized image %s with not one sample per pixel",
                    TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return;
            }
            t2p->pdf_colorspace = T2P_CS_RGB | T2P_CS_PALETTE;
            t2p->pdf_palettesize = 0x0001 << t2p->tiff_bitspersample;
            if (!TIFFGetField(input, TIFFTAG_COLORMAP, &r, &g, &b)) {
                TIFFError(
                    TIFF2PDF_MODULE,
                    "Palettized image %s has no color map",
                    TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return;
            }
            if (t2p->pdf_palette != nullptr) {
                _TIFFfree(t2p->pdf_palette);
                t2p->pdf_palette = nullptr;
            }
            t2p->pdf_palette = (unsigned char *)
                               _TIFFmalloc(t2p->pdf_palettesize * 3);
            if (t2p->pdf_palette == nullptr) {
                TIFFError(
                    TIFF2PDF_MODULE,
                    "Can't allocate %u bytes of memory for t2p_read_tiff_image, %s",
                    t2p->pdf_palettesize,
                    TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return;
            }
            for (i = 0; i < t2p->pdf_palettesize; i++) {
                t2p->pdf_palette[(i * 3)]  = (unsigned char)(r[i] >> 8);
                t2p->pdf_palette[(i * 3) + 1] = (unsigned char)(g[i] >> 8);
                t2p->pdf_palette[(i * 3) + 2] = (unsigned char)(b[i] >> 8);
            }
            t2p->pdf_palettesize *= 3;
            break;
        case PHOTOMETRIC_SEPARATED:
            if (TIFFGetField(input, TIFFTAG_INDEXED, &xuint16)) {
                if (xuint16 == 1) {
                    goto photometric_palette_cmyk;
                }
            }
            if (TIFFGetField(input, TIFFTAG_INKSET, &xuint16)) {
                if (xuint16 != INKSET_CMYK) {
                    TIFFError(
                        TIFF2PDF_MODULE,
                        "No support for %s because its inkset is not CMYK",
                        TIFFFileName(input));
                    t2p->t2p_error = T2P_ERR_ERROR;
                    return;
                }
            }
            if (t2p->tiff_samplesperpixel == 4) {
                t2p->pdf_colorspace = T2P_CS_CMYK;
            } else {
                TIFFError(
                    TIFF2PDF_MODULE,
                    "No support for %s because it has %u samples per pixel",
                    TIFFFileName(input),
                    t2p->tiff_samplesperpixel);
                t2p->t2p_error = T2P_ERR_ERROR;
                return;
            }
            break;
photometric_palette_cmyk:
            if (t2p->tiff_samplesperpixel != 1) {
                TIFFError(
                    TIFF2PDF_MODULE,
                    "No support for palettized CMYK image %s with not one sample per pixel",
                    TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return;
            }
            t2p->pdf_colorspace = T2P_CS_CMYK | T2P_CS_PALETTE;
            t2p->pdf_palettesize = 0x0001 << t2p->tiff_bitspersample;
            if (!TIFFGetField(input, TIFFTAG_COLORMAP, &r, &g, &b, &a)) {
                TIFFError(
                    TIFF2PDF_MODULE,
                    "Palettized image %s has no color map",
                    TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return;
            }
            if (t2p->pdf_palette != nullptr) {
                _TIFFfree(t2p->pdf_palette);
                t2p->pdf_palette = nullptr;
            }
            t2p->pdf_palette = (unsigned char *)
                               _TIFFmalloc(t2p->pdf_palettesize * 4);
            if (t2p->pdf_palette == nullptr) {
                TIFFError(
                    TIFF2PDF_MODULE,
                    "Can't allocate %u bytes of memory for t2p_read_tiff_image, %s",
                    t2p->pdf_palettesize,
                    TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return;
            }
            for (i = 0; i < t2p->pdf_palettesize; i++) {
                t2p->pdf_palette[(i * 4)]  = (unsigned char)(r[i] >> 8);
                t2p->pdf_palette[(i * 4) + 1] = (unsigned char)(g[i] >> 8);
                t2p->pdf_palette[(i * 4) + 2] = (unsigned char)(b[i] >> 8);
                t2p->pdf_palette[(i * 4) + 3] = (unsigned char)(a[i] >> 8);
            }
            t2p->pdf_palettesize *= 4;
            break;
        case PHOTOMETRIC_YCBCR:
            t2p->pdf_colorspace = T2P_CS_RGB;
            if (t2p->tiff_samplesperpixel == 1) {
                t2p->pdf_colorspace = T2P_CS_GRAY;
                t2p->tiff_photometric = PHOTOMETRIC_MINISBLACK;
                break;
            }
            t2p->pdf_sample = T2P_SAMPLE_YCBCR_TO_RGB;
#ifdef JPEG_SUPPORT
            if (t2p->pdf_defaultcompression == T2P_COMPRESS_JPEG) {
                t2p->pdf_sample = T2P_SAMPLE_NOTHING;
            }
#endif
            break;
        case PHOTOMETRIC_CIELAB:
            t2p->pdf_labrange[0] = -127;
            t2p->pdf_labrange[1] = 127;
            t2p->pdf_labrange[2] = -127;
            t2p->pdf_labrange[3] = 127;
            t2p->pdf_sample = T2P_SAMPLE_LAB_SIGNED_TO_UNSIGNED;
            t2p->pdf_colorspace = T2P_CS_LAB;
            break;
        case PHOTOMETRIC_ICCLAB:
            t2p->pdf_labrange[0] = 0;
            t2p->pdf_labrange[1] = 255;
            t2p->pdf_labrange[2] = 0;
            t2p->pdf_labrange[3] = 255;
            t2p->pdf_colorspace = T2P_CS_LAB;
            break;
        case PHOTOMETRIC_ITULAB:
            t2p->pdf_labrange[0] = -85;
            t2p->pdf_labrange[1] = 85;
            t2p->pdf_labrange[2] = -75;
            t2p->pdf_labrange[3] = 124;
            t2p->pdf_sample = T2P_SAMPLE_LAB_SIGNED_TO_UNSIGNED;
            t2p->pdf_colorspace = T2P_CS_LAB;
            break;
        case PHOTOMETRIC_LOGL:
        case PHOTOMETRIC_LOGLUV:
            TIFFError(
                TIFF2PDF_MODULE,
                "No support for %s with photometric interpretation LogL/LogLuv",
                TIFFFileName(input));
            t2p->t2p_error = T2P_ERR_ERROR;
            return;
        default:
            TIFFError(
                TIFF2PDF_MODULE,
                "No support for %s with photometric interpretation %u",
                TIFFFileName(input),
                t2p->tiff_photometric);
            t2p->t2p_error = T2P_ERR_ERROR;
            return;
    }

    if (TIFFGetField(input, TIFFTAG_PLANARCONFIG, &(t2p->tiff_planar))) {
        switch (t2p->tiff_planar) {
            case 0:
                TIFFWarning(
                    TIFF2PDF_MODULE,
                    "Image %s has planar configuration 0, assuming 1",
                    TIFFFileName(input));
                t2p->tiff_planar = PLANARCONFIG_CONTIG;
            case PLANARCONFIG_CONTIG:
                break;
            case PLANARCONFIG_SEPARATE:
                t2p->pdf_sample = T2P_SAMPLE_PLANAR_SEPARATE_TO_CONTIG;
                if (t2p->tiff_bitspersample != 8) {
                    TIFFError(
                        TIFF2PDF_MODULE,
                        "No support for %s with separated planar configuration and %u bits per sample",
                        TIFFFileName(input),
                        t2p->tiff_bitspersample);
                    t2p->t2p_error = T2P_ERR_ERROR;
                    return;
                }
                break;
            default:
                TIFFError(
                    TIFF2PDF_MODULE,
                    "No support for %s with planar configuration %u",
                    TIFFFileName(input),
                    t2p->tiff_planar);
                t2p->t2p_error = T2P_ERR_ERROR;
                return;
        }
    }

    TIFFGetFieldDefaulted(input, TIFFTAG_ORIENTATION,
                          &(t2p->tiff_orientation));
    if (t2p->tiff_orientation > 8) {
        TIFFWarning(TIFF2PDF_MODULE,
                    "Image %s has orientation %u, assuming 0",
                    TIFFFileName(input), t2p->tiff_orientation);
        t2p->tiff_orientation = 0;
    }

    if (TIFFGetField(input, TIFFTAG_XRESOLUTION, &(t2p->tiff_xres)) == 0) {
        t2p->tiff_xres = 0.0;
    }
    if (TIFFGetField(input, TIFFTAG_YRESOLUTION, &(t2p->tiff_yres)) == 0) {
        t2p->tiff_yres = 0.0;
    }
    TIFFGetFieldDefaulted(input, TIFFTAG_RESOLUTIONUNIT,
                          &(t2p->tiff_resunit));
    if (t2p->tiff_resunit == RESUNIT_CENTIMETER) {
        t2p->tiff_xres *= 2.54F;
        t2p->tiff_yres *= 2.54F;
    } else if (t2p->tiff_resunit != RESUNIT_INCH
               && t2p->pdf_centimeters != 0) {
        t2p->tiff_xres *= 2.54F;
        t2p->tiff_yres *= 2.54F;
    }

    t2p_compose_pdf_page(t2p);

    t2p->pdf_transcode = T2P_TRANSCODE_ENCODE;
    if (t2p->pdf_nopassthrough == 0) {
#ifdef CCITT_SUPPORT
        if (t2p->tiff_compression == COMPRESSION_CCITTFAX4
           ) {
            if (TIFFIsTiled(input) || (TIFFNumberOfStrips(input) == 1)) {
                t2p->pdf_transcode = T2P_TRANSCODE_RAW;
                t2p->pdf_compression = T2P_COMPRESS_G4;
            }
        }
#endif
#ifdef ZIP_SUPPORT
        if (t2p->tiff_compression == COMPRESSION_ADOBE_DEFLATE
            || t2p->tiff_compression == COMPRESSION_DEFLATE) {
            if (TIFFIsTiled(input) || (TIFFNumberOfStrips(input) == 1)) {
                t2p->pdf_transcode = T2P_TRANSCODE_RAW;
                t2p->pdf_compression = T2P_COMPRESS_ZIP;
            }
        }
#endif
#ifdef OJPEG_SUPPORT
        if (t2p->tiff_compression == COMPRESSION_OJPEG) {
            t2p->pdf_transcode = T2P_TRANSCODE_RAW;
            t2p->pdf_compression = T2P_COMPRESS_JPEG;
            t2p_process_ojpeg_tables(t2p, input);
        }
#endif
#ifdef JPEG_SUPPORT
        if (t2p->tiff_compression == COMPRESSION_JPEG) {
            t2p->pdf_transcode = T2P_TRANSCODE_RAW;
            t2p->pdf_compression = T2P_COMPRESS_JPEG;
        }
#endif
        (void)0;
    }

    if (t2p->pdf_transcode != T2P_TRANSCODE_RAW) {
        t2p->pdf_compression = t2p->pdf_defaultcompression;
    }

#ifdef JPEG_SUPPORT
    if (t2p->pdf_defaultcompression == T2P_COMPRESS_JPEG) {
        if (t2p->pdf_colorspace & T2P_CS_PALETTE) {
            t2p->pdf_sample = t2p->pdf_sample | T2P_SAMPLE_REALIZE_PALETTE;
            t2p->pdf_colorspace = t2p->pdf_colorspace ^ T2P_CS_PALETTE;
            t2p->tiff_pages[t2p->pdf_page].page_extra--;
        }
    }
    if (t2p->tiff_compression == COMPRESSION_JPEG) {
        if (t2p->tiff_planar == PLANARCONFIG_SEPARATE) {
            TIFFError(
                TIFF2PDF_MODULE,
                "No support for %s with JPEG compression and separated planar configuration",
                TIFFFileName(input));
            t2p->t2p_error = T2P_ERR_ERROR;
            return;
        }
    }
#endif
#ifdef OJPEG_SUPPORT
    if (t2p->tiff_compression == COMPRESSION_OJPEG) {
        if (t2p->tiff_planar == PLANARCONFIG_SEPARATE) {
            TIFFError(
                TIFF2PDF_MODULE,
                "No support for %s with OJPEG compression and separated planar configuration",
                TIFFFileName(input));
            t2p->t2p_error = T2P_ERR_ERROR;
            return;
        }
    }
#endif

    if (t2p->pdf_sample & T2P_SAMPLE_REALIZE_PALETTE) {
        if (t2p->pdf_colorspace & T2P_CS_CMYK) {
            t2p->tiff_samplesperpixel = 4;
            t2p->tiff_photometric = PHOTOMETRIC_SEPARATED;
        } else {
            t2p->tiff_samplesperpixel = 3;
            t2p->tiff_photometric = PHOTOMETRIC_RGB;
        }
    }

    if (TIFFGetField(input, TIFFTAG_TRANSFERFUNCTION,
                     &(t2p->tiff_transferfunction[0]),
                     &(t2p->tiff_transferfunction[1]),
                     &(t2p->tiff_transferfunction[2]))) {
        if (t2p->tiff_transferfunction[1] !=
            t2p->tiff_transferfunction[0]) {
            t2p->tiff_transferfunctioncount = 3;
        } else {
            t2p->tiff_transferfunctioncount = 1;
        }
    } else {
        t2p->tiff_transferfunctioncount = 0;
    }
    if (TIFFGetField(input, TIFFTAG_WHITEPOINT, &xfloatp) != 0) {
        t2p->tiff_whitechromaticities[0] = xfloatp[0];
        t2p->tiff_whitechromaticities[1] = xfloatp[1];
        if (t2p->pdf_colorspace & T2P_CS_GRAY) {
            t2p->pdf_colorspace = t2p->pdf_colorspace | T2P_CS_CALGRAY;
        }
        if (t2p->pdf_colorspace & T2P_CS_RGB) {
            t2p->pdf_colorspace = t2p->pdf_colorspace | T2P_CS_CALRGB;
        }
    }
    if (TIFFGetField(input, TIFFTAG_PRIMARYCHROMATICITIES, &xfloatp) != 0) {
        t2p->tiff_primarychromaticities[0] = xfloatp[0];
        t2p->tiff_primarychromaticities[1] = xfloatp[1];
        t2p->tiff_primarychromaticities[2] = xfloatp[2];
        t2p->tiff_primarychromaticities[3] = xfloatp[3];
        t2p->tiff_primarychromaticities[4] = xfloatp[4];
        t2p->tiff_primarychromaticities[5] = xfloatp[5];
        if (t2p->pdf_colorspace & T2P_CS_RGB) {
            t2p->pdf_colorspace = t2p->pdf_colorspace | T2P_CS_CALRGB;
        }
    }
    if (t2p->pdf_colorspace & T2P_CS_LAB) {
        if (TIFFGetField(input, TIFFTAG_WHITEPOINT, &xfloatp) != 0) {
            t2p->tiff_whitechromaticities[0] = xfloatp[0];
            t2p->tiff_whitechromaticities[1] = xfloatp[1];
        } else {
            t2p->tiff_whitechromaticities[0] = 0.3457F; /* 0.3127F; */
            t2p->tiff_whitechromaticities[1] = 0.3585F; /* 0.3290F; */
        }
    }
    if (TIFFGetField(input,
                     TIFFTAG_ICCPROFILE,
                     &(t2p->tiff_iccprofilelength),
                     &(t2p->tiff_iccprofile)) != 0) {
        t2p->pdf_colorspace |= T2P_CS_ICCBASED;
    } else {
        t2p->tiff_iccprofilelength = 0;
        t2p->tiff_iccprofile = nullptr;
    }

#ifdef CCITT_SUPPORT
    if (t2p->tiff_bitspersample == 1 &&
        t2p->tiff_samplesperpixel == 1) {
        t2p->pdf_compression = T2P_COMPRESS_G4;
    }
#endif


    return;
}

/*
    This function returns the necessary size of a data buffer to contain the raw or
    uncompressed image data from the input TIFF for a page.
*/

void t2p_read_tiff_size(T2P *t2p, TIFF *input)
{

    uint64 *sbc = nullptr;
#if defined(JPEG_SUPPORT) || defined (OJPEG_SUPPORT)
    unsigned char *jpt = nullptr;
    tstrip_t i = 0;
    tstrip_t stripcount = 0;
#endif
    uint64 k = 0;

    if (t2p->pdf_transcode == T2P_TRANSCODE_RAW) {
#ifdef CCITT_SUPPORT
        if (t2p->pdf_compression == T2P_COMPRESS_G4) {
            TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
            t2p->tiff_datasize = (tmsize_t)sbc[0];
            return;
        }
#endif
#ifdef ZIP_SUPPORT
        if (t2p->pdf_compression == T2P_COMPRESS_ZIP) {
            TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
            t2p->tiff_datasize = (tmsize_t)sbc[0];
            return;
        }
#endif
#ifdef OJPEG_SUPPORT
        if (t2p->tiff_compression == COMPRESSION_OJPEG) {
            if (!TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc)) {
                TIFFError(TIFF2PDF_MODULE,
                          "Input file %s missing field: TIFFTAG_STRIPBYTECOUNTS",
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return;
            }
            stripcount = TIFFNumberOfStrips(input);
            for (i = 0; i < stripcount; i++) {
                k = checkAdd64(k, sbc[i], t2p);
            }
            if (TIFFGetField(input, TIFFTAG_JPEGIFOFFSET, &(t2p->tiff_dataoffset))) {
                if (t2p->tiff_dataoffset != 0) {
                    if (TIFFGetField(input, TIFFTAG_JPEGIFBYTECOUNT, &(t2p->tiff_datasize)) != 0) {
                        if ((uint64)t2p->tiff_datasize < k) {
                            TIFFWarning(TIFF2PDF_MODULE,
                                        "Input file %s has short JPEG interchange file byte count",
                                        TIFFFileName(input));
                            t2p->pdf_ojpegiflength = t2p->tiff_datasize;
                            k = checkAdd64(k, t2p->tiff_datasize, t2p);
                            k = checkAdd64(k, 6, t2p);
                            k = checkAdd64(k, stripcount, t2p);
                            k = checkAdd64(k, stripcount, t2p);
                            t2p->tiff_datasize = (tsize_t) k;
                            if ((uint64) t2p->tiff_datasize != k) {
                                TIFFError(TIFF2PDF_MODULE, "Integer overflow");
                                t2p->t2p_error = T2P_ERR_ERROR;
                            }
                            return;
                        }
                        return;
                    } else {
                        TIFFError(TIFF2PDF_MODULE,
                                  "Input file %s missing field: TIFFTAG_JPEGIFBYTECOUNT",
                                  TIFFFileName(input));
                        t2p->t2p_error = T2P_ERR_ERROR;
                        return;
                    }
                }
            }
            k = checkAdd64(k, stripcount, t2p);
            k = checkAdd64(k, stripcount, t2p);
            k = checkAdd64(k, 2048, t2p);
            t2p->tiff_datasize = (tsize_t) k;
            if ((uint64) t2p->tiff_datasize != k) {
                TIFFError(TIFF2PDF_MODULE, "Integer overflow");
                t2p->t2p_error = T2P_ERR_ERROR;
            }
            return;
        }
#endif
#ifdef JPEG_SUPPORT
        if (t2p->tiff_compression == COMPRESSION_JPEG) {
            uint32 count = 0;
            if (TIFFGetField(input, TIFFTAG_JPEGTABLES, &count, &jpt) != 0) {
                if (count > 4) {
                    k += count;
                    k -= 2; /* don't use EOI of header */
                }
            } else {
                k = 2; /* SOI for first strip */
            }
            stripcount = TIFFNumberOfStrips(input);
            if (!TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc)) {
                TIFFError(TIFF2PDF_MODULE,
                          "Input file %s missing field: TIFFTAG_STRIPBYTECOUNTS",
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return;
            }
            for (i = 0; i < stripcount; i++) {
                k = checkAdd64(k, sbc[i], t2p);
                k -= 4; /* don't use SOI or EOI of strip */
            }
            k = checkAdd64(k, 2, t2p); /* use EOI of last strip */
            t2p->tiff_datasize = (tsize_t) k;
            if ((uint64) t2p->tiff_datasize != k) {
                TIFFError(TIFF2PDF_MODULE, "Integer overflow");
                t2p->t2p_error = T2P_ERR_ERROR;
            }
            return;
        }
#endif
        (void) 0;
    }
    k = checkMultiply64(TIFFScanlineSize(input), t2p->tiff_length, t2p);
    if (t2p->tiff_planar == PLANARCONFIG_SEPARATE) {
        k = checkMultiply64(k, t2p->tiff_samplesperpixel, t2p);
    }
    if (k == 0) {
        /* Assume we had overflow inside TIFFScanlineSize */
        t2p->t2p_error = T2P_ERR_ERROR;
    }

    t2p->tiff_datasize = (tsize_t) k;
    if ((uint64) t2p->tiff_datasize != k) {
        TIFFError(TIFF2PDF_MODULE, "Integer overflow");
        t2p->t2p_error = T2P_ERR_ERROR;
    }

    return;
}

/*
    This function returns the necessary size of a data buffer to contain the raw or
    uncompressed image data from the input TIFF for a tile of a page.
*/

void t2p_read_tiff_size_tile(T2P *t2p, TIFF *input, ttile_t tile)
{

    uint64 *tbc = nullptr;
    uint16 edge = 0;
#ifdef JPEG_SUPPORT
    unsigned char *jpt;
#endif
    uint64 k;

    edge |= t2p_tile_is_right_edge(t2p->tiff_tiles[t2p->pdf_page], tile);
    edge |= t2p_tile_is_bottom_edge(t2p->tiff_tiles[t2p->pdf_page], tile);

    if (t2p->pdf_transcode == T2P_TRANSCODE_RAW) {
        if (edge
#if defined(JPEG_SUPPORT) || defined(OJPEG_SUPPORT)
            && !(t2p->pdf_compression == T2P_COMPRESS_JPEG)
#endif
           ) {
            t2p->tiff_datasize = TIFFTileSize(input);
            if (t2p->tiff_datasize == 0) {
                /* Assume we had overflow inside TIFFTileSize */
                t2p->t2p_error = T2P_ERR_ERROR;
            }
            return;
        } else {
            TIFFGetField(input, TIFFTAG_TILEBYTECOUNTS, &tbc);
            k = tbc[tile];
#ifdef OJPEG_SUPPORT
            if (t2p->tiff_compression == COMPRESSION_OJPEG) {
                k = checkAdd64(k, 2048, t2p);
            }
#endif
#ifdef JPEG_SUPPORT
            if (t2p->tiff_compression == COMPRESSION_JPEG) {
                uint32 count = 0;
                if (TIFFGetField(input, TIFFTAG_JPEGTABLES, &count, &jpt) != 0) {
                    if (count > 4) {
                        k = checkAdd64(k, count, t2p);
                        k -= 2; /* don't use EOI of header or SOI of tile */
                    }
                }
            }
#endif
            t2p->tiff_datasize = (tsize_t) k;
            if ((uint64) t2p->tiff_datasize != k) {
                TIFFError(TIFF2PDF_MODULE, "Integer overflow");
                t2p->t2p_error = T2P_ERR_ERROR;
            }
            return;
        }
    }
    k = TIFFTileSize(input);
    if (t2p->tiff_planar == PLANARCONFIG_SEPARATE) {
        k = checkMultiply64(k, t2p->tiff_samplesperpixel, t2p);
    }
    if (k == 0) {
        /* Assume we had overflow inside TIFFTileSize */
        t2p->t2p_error = T2P_ERR_ERROR;
    }

    t2p->tiff_datasize = (tsize_t) k;
    if ((uint64) t2p->tiff_datasize != k) {
        TIFFError(TIFF2PDF_MODULE, "Integer overflow");
        t2p->t2p_error = T2P_ERR_ERROR;
    }

    return;
}

/*
 * This functions returns a non-zero value when the tile is on the right edge
 * and does not have full imaged tile width.
 */

int t2p_tile_is_right_edge(T2P_TILES tiles, ttile_t tile)
{

    if (((tile + 1) % tiles.tiles_tilecountx == 0)
        && (tiles.tiles_edgetilewidth != 0)) {
        return (1);
    } else {
        return (0);
    }
}

/*
 * This functions returns a non-zero value when the tile is on the bottom edge
 * and does not have full imaged tile length.
 */

int t2p_tile_is_bottom_edge(T2P_TILES tiles, ttile_t tile)
{

    if (((tile + 1) > (tiles.tiles_tilecount - tiles.tiles_tilecountx))
        && (tiles.tiles_edgetilelength != 0)) {
        return (1);
    } else {
        return (0);
    }
}

/*
 * This function returns a non-zero value when the tile is a right edge tile
 * or a bottom edge tile.
 */

int t2p_tile_is_edge(T2P_TILES tiles, ttile_t tile)
{

    return (t2p_tile_is_right_edge(tiles, tile) | t2p_tile_is_bottom_edge(tiles, tile));
}

/*
    This function returns a non-zero value when the tile is a right edge tile and a bottom
    edge tile.
*/

int t2p_tile_is_corner_edge(T2P_TILES tiles, ttile_t tile)
{

    return (t2p_tile_is_right_edge(tiles, tile) & t2p_tile_is_bottom_edge(tiles, tile));
}


/*
    This function reads the raster image data from the input TIFF for an image and writes
    the data to the output PDF XObject image dictionary stream.  It returns the amount written
    or zero on error.
*/

tsize_t t2p_readwrite_pdf_image(T2P *t2p, TIFF *input, TIFF *output)
{

    tsize_t written = 0;
    unsigned char *buffer = nullptr;
    unsigned char *samplebuffer = nullptr;
    tsize_t bufferoffset = 0;
    tsize_t samplebufferoffset = 0;
    tsize_t read = 0;
    tstrip_t i = 0;
    tstrip_t j = 0;
    tstrip_t stripcount = 0;
    tsize_t stripsize = 0;
    tsize_t sepstripcount = 0;
    tsize_t sepstripsize = 0;
#ifdef OJPEG_SUPPORT
    toff_t inputoffset = 0;
    uint16 h_samp = 1;
    uint16 v_samp = 1;
    uint16 ri = 1;
    uint32 rows = 0;
#endif
#ifdef JPEG_SUPPORT
    unsigned char *jpt;
    float *xfloatp;
    uint64 *sbc;
    unsigned char *stripbuffer;
    tsize_t striplength = 0;
    uint32 max_striplength = 0;
#endif

    /* Fail if prior error (in particular, can't trust tiff_datasize) */
    if (t2p->t2p_error != T2P_ERR_OK) {
        return (0);
    }

    if (t2p->pdf_transcode == T2P_TRANSCODE_RAW) {
#ifdef CCITT_SUPPORT
        if (t2p->pdf_compression == T2P_COMPRESS_G4) {
            buffer = (unsigned char *)
                     _TIFFmalloc(t2p->tiff_datasize);
            if (buffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %lu bytes of memory for t2p_readwrite_pdf_image, %s",
                          (unsigned long) t2p->tiff_datasize,
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            TIFFReadRawStrip(input, 0, (tdata_t) buffer,
                             t2p->tiff_datasize);
            if (t2p->tiff_fillorder == FILLORDER_LSB2MSB) {
                /*
                 * make sure is lsb-to-msb
                 * bit-endianness fill order
                 */
                TIFFReverseBits(buffer,
                                t2p->tiff_datasize);
            }
            t2pWriteFile(output, (tdata_t) buffer,
                         t2p->tiff_datasize);
            _TIFFfree(buffer);
            return (t2p->tiff_datasize);
        }
#endif
#ifdef ZIP_SUPPORT
        if (t2p->pdf_compression == T2P_COMPRESS_ZIP) {
            buffer = (unsigned char *)
                     _TIFFmalloc(t2p->tiff_datasize);
            if (buffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %lu bytes of memory for t2p_readwrite_pdf_image, %s",
                          (unsigned long) t2p->tiff_datasize,
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            memset(buffer, 0, t2p->tiff_datasize);
            TIFFReadRawStrip(input, 0, (tdata_t) buffer,
                             t2p->tiff_datasize);
            if (t2p->tiff_fillorder == FILLORDER_LSB2MSB) {
                TIFFReverseBits(buffer,
                                t2p->tiff_datasize);
            }
            t2pWriteFile(output, (tdata_t) buffer,
                         t2p->tiff_datasize);
            _TIFFfree(buffer);
            return (t2p->tiff_datasize);
        }
#endif
#ifdef OJPEG_SUPPORT
        if (t2p->tiff_compression == COMPRESSION_OJPEG) {

            if (t2p->tiff_dataoffset != 0) {
                buffer = (unsigned char *)
                         _TIFFmalloc(t2p->tiff_datasize);
                if (buffer == nullptr) {
                    TIFFError(TIFF2PDF_MODULE,
                              "Can't allocate %lu bytes of memory for t2p_readwrite_pdf_image, %s",
                              (unsigned long) t2p->tiff_datasize,
                              TIFFFileName(input));
                    t2p->t2p_error = T2P_ERR_ERROR;
                    return (0);
                }
                memset(buffer, 0, t2p->tiff_datasize);
                if (t2p->pdf_ojpegiflength == 0) {
                    inputoffset = t2pSeekFile(input, 0,
                                              SEEK_CUR);
                    t2pSeekFile(input,
                                t2p->tiff_dataoffset,
                                SEEK_SET);
                    t2pReadFile(input, (tdata_t) buffer,
                                t2p->tiff_datasize);
                    t2pSeekFile(input, inputoffset,
                                SEEK_SET);
                    t2pWriteFile(output, (tdata_t) buffer,
                                 t2p->tiff_datasize);
                    _TIFFfree(buffer);
                    return (t2p->tiff_datasize);
                } else {
                    inputoffset = t2pSeekFile(input, 0,
                                              SEEK_CUR);
                    t2pSeekFile(input,
                                t2p->tiff_dataoffset,
                                SEEK_SET);
                    bufferoffset = t2pReadFile(input,
                                               (tdata_t) buffer,
                                               t2p->pdf_ojpegiflength);
                    t2p->pdf_ojpegiflength = 0;
                    t2pSeekFile(input, inputoffset,
                                SEEK_SET);
                    TIFFGetField(input,
                                 TIFFTAG_YCBCRSUBSAMPLING,
                                 &h_samp, &v_samp);
                    buffer[bufferoffset++] = 0xff;
                    buffer[bufferoffset++] = 0xdd;
                    buffer[bufferoffset++] = 0x00;
                    buffer[bufferoffset++] = 0x04;
                    h_samp *= 8;
                    v_samp *= 8;
                    ri = (t2p->tiff_width + h_samp - 1) / h_samp;
                    TIFFGetField(input,
                                 TIFFTAG_ROWSPERSTRIP,
                                 &rows);
                    ri *= (rows + v_samp - 1) / v_samp;
                    buffer[bufferoffset++] = (ri >> 8) & 0xff;
                    buffer[bufferoffset++] = ri & 0xff;
                    stripcount = TIFFNumberOfStrips(input);
                    for (i = 0; i < stripcount; i++) {
                        if (i != 0) {
                            buffer[bufferoffset++] = 0xff;
                            buffer[bufferoffset++] = (0xd0 | ((i - 1) % 8));
                        }
                        bufferoffset += TIFFReadRawStrip(input,
                                                         i,
                                                         (tdata_t) & (((unsigned char *)buffer)[bufferoffset]),
                                                         -1);
                    }
                    t2pWriteFile(output, (tdata_t) buffer, bufferoffset);
                    _TIFFfree(buffer);
                    return (bufferoffset);
                }
            } else {
                if (! t2p->pdf_ojpegdata) {
                    TIFFError(TIFF2PDF_MODULE,
                              "No support for OJPEG image %s with bad tables",
                              TIFFFileName(input));
                    t2p->t2p_error = T2P_ERR_ERROR;
                    return (0);
                }
                buffer = (unsigned char *)
                         _TIFFmalloc(t2p->tiff_datasize);
                if (buffer == nullptr) {
                    TIFFError(TIFF2PDF_MODULE,
                              "Can't allocate %lu bytes of memory for t2p_readwrite_pdf_image, %s",
                              (unsigned long) t2p->tiff_datasize,
                              TIFFFileName(input));
                    t2p->t2p_error = T2P_ERR_ERROR;
                    return (0);
                }
                memset(buffer, 0, t2p->tiff_datasize);
                _TIFFmemcpy(buffer, t2p->pdf_ojpegdata, t2p->pdf_ojpegdatalength);
                bufferoffset = t2p->pdf_ojpegdatalength;
                stripcount = TIFFNumberOfStrips(input);
                for (i = 0; i < stripcount; i++) {
                    if (i != 0) {
                        buffer[bufferoffset++] = 0xff;
                        buffer[bufferoffset++] = (0xd0 | ((i - 1) % 8));
                    }
                    bufferoffset += TIFFReadRawStrip(input,
                                                     i,
                                                     (tdata_t) & (((unsigned char *)buffer)[bufferoffset]),
                                                     -1);
                }
                if (!((buffer[bufferoffset - 1] == 0xd9) && (buffer[bufferoffset - 2] == 0xff))) {
                    buffer[bufferoffset++] = 0xff;
                    buffer[bufferoffset++] = 0xd9;
                }
                t2pWriteFile(output, (tdata_t) buffer, bufferoffset);
                _TIFFfree(buffer);
                return (bufferoffset);
                TIFFError(TIFF2PDF_MODULE,
                          "No support for OJPEG image %s with no JPEG File Interchange offset",
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            return (t2p->tiff_datasize);
        }
#endif
#ifdef JPEG_SUPPORT
        if (t2p->tiff_compression == COMPRESSION_JPEG) {
            uint32 count = 0;
            buffer = (unsigned char *)
                     _TIFFmalloc(t2p->tiff_datasize);
            if (buffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %lu bytes of memory for t2p_readwrite_pdf_image, %s",
                          (unsigned long) t2p->tiff_datasize,
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            memset(buffer, 0, t2p->tiff_datasize);
            if (TIFFGetField(input, TIFFTAG_JPEGTABLES, &count, &jpt) != 0) {
                if (count > 4) {
                    _TIFFmemcpy(buffer, jpt, count);
                    bufferoffset += count - 2;
                }
            }
            stripcount = TIFFNumberOfStrips(input);
            TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
            for (i = 0; i < stripcount; i++) {
                if (sbc[i] > max_striplength) {
                    max_striplength = sbc[i];
                }
            }
            stripbuffer = (unsigned char *)
                          _TIFFmalloc(max_striplength);
            if (stripbuffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %u bytes of memory for t2p_readwrite_pdf_image, %s",
                          max_striplength,
                          TIFFFileName(input));
                _TIFFfree(buffer);
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            for (i = 0; i < stripcount; i++) {
                striplength = TIFFReadRawStrip(input, i, (tdata_t) stripbuffer, -1);
                if (!t2p_process_jpeg_strip(
                        stripbuffer,
                        &striplength,
                        buffer,
                        &bufferoffset,
                        i,
                        t2p->tiff_length)) {
                    TIFFError(TIFF2PDF_MODULE,
                              "Can't process JPEG data in input file %s",
                              TIFFFileName(input));
                    _TIFFfree(samplebuffer);
                    _TIFFfree(buffer);
                    t2p->t2p_error = T2P_ERR_ERROR;
                    return (0);
                }
            }
            buffer[bufferoffset++] = 0xff;
            buffer[bufferoffset++] = 0xd9;
            t2pWriteFile(output, (tdata_t) buffer, bufferoffset);
            _TIFFfree(stripbuffer);
            _TIFFfree(buffer);
            return (bufferoffset);
        }
#endif
        (void)0;
    }

    if (t2p->pdf_sample == T2P_SAMPLE_NOTHING) {
        buffer = (unsigned char *) _TIFFmalloc(t2p->tiff_datasize);
        if (buffer == nullptr) {
            TIFFError(TIFF2PDF_MODULE,
                      "Can't allocate %lu bytes of memory for t2p_readwrite_pdf_image, %s",
                      (unsigned long) t2p->tiff_datasize,
                      TIFFFileName(input));
            t2p->t2p_error = T2P_ERR_ERROR;
            return (0);
        }
        memset(buffer, 0, t2p->tiff_datasize);
        stripsize = TIFFStripSize(input);
        stripcount = TIFFNumberOfStrips(input);
        for (i = 0; i < stripcount; i++) {
            read =
                TIFFReadEncodedStrip(input,
                                     i,
                                     (tdata_t) &buffer[bufferoffset],
                                     stripsize);
            if (read == -1) {
                TIFFError(TIFF2PDF_MODULE,
                          "Error on decoding strip %u of %s",
                          i,
                          TIFFFileName(input));
                _TIFFfree(buffer);
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            bufferoffset += read;
        }
    } else {
        if (t2p->pdf_sample & T2P_SAMPLE_PLANAR_SEPARATE_TO_CONTIG) {

            sepstripsize = TIFFStripSize(input);
            sepstripcount = TIFFNumberOfStrips(input);

            stripsize = sepstripsize * t2p->tiff_samplesperpixel;
            stripcount = sepstripcount / t2p->tiff_samplesperpixel;

            buffer = (unsigned char *) _TIFFmalloc(t2p->tiff_datasize);
            if (buffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %lu bytes of memory for t2p_readwrite_pdf_image, %s",
                          (unsigned long) t2p->tiff_datasize,
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            memset(buffer, 0, t2p->tiff_datasize);
            samplebuffer = (unsigned char *) _TIFFmalloc(stripsize);
            if (samplebuffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %lu bytes of memory for t2p_readwrite_pdf_image, %s",
                          (unsigned long) t2p->tiff_datasize,
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            for (i = 0; i < stripcount; i++) {
                samplebufferoffset = 0;
                for (j = 0; j < t2p->tiff_samplesperpixel; j++) {
                    read =
                        TIFFReadEncodedStrip(input,
                                             i + j * stripcount,
                                             (tdata_t) & (samplebuffer[samplebufferoffset]),
                                             sepstripsize);
                    if (read == -1) {
                        TIFFError(TIFF2PDF_MODULE,
                                  "Error on decoding strip %u of %s",
                                  i + j * stripcount,
                                  TIFFFileName(input));
                        _TIFFfree(buffer);
                        t2p->t2p_error = T2P_ERR_ERROR;
                        return (0);
                    }
                    samplebufferoffset += read;
                }
                t2p_sample_planar_separate_to_contig(
                    t2p,
                    &(buffer[bufferoffset]),
                    samplebuffer,
                    samplebufferoffset);
                bufferoffset += samplebufferoffset;
            }
            _TIFFfree(samplebuffer);
            goto dataready;
        }

        buffer = (unsigned char *) _TIFFmalloc(t2p->tiff_datasize);
        if (buffer == nullptr) {
            TIFFError(TIFF2PDF_MODULE,
                      "Can't allocate %lu bytes of memory for t2p_readwrite_pdf_image, %s",
                      (unsigned long) t2p->tiff_datasize,
                      TIFFFileName(input));
            t2p->t2p_error = T2P_ERR_ERROR;
            return (0);
        }
        memset(buffer, 0, t2p->tiff_datasize);
        stripsize = TIFFStripSize(input);
        stripcount = TIFFNumberOfStrips(input);
        for (i = 0; i < stripcount; i++) {
            read =
                TIFFReadEncodedStrip(input,
                                     i,
                                     (tdata_t) &buffer[bufferoffset],
                                     stripsize);
            if (read == -1) {
                TIFFError(TIFF2PDF_MODULE,
                          "Error on decoding strip %u of %s",
                          i,
                          TIFFFileName(input));
                _TIFFfree(samplebuffer);
                _TIFFfree(buffer);
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            bufferoffset += read;
        }

        if (t2p->pdf_sample & T2P_SAMPLE_REALIZE_PALETTE) {
            // FIXME: overflow?
            samplebuffer = (unsigned char *)_TIFFrealloc(
                               (tdata_t) buffer,
                               t2p->tiff_datasize * t2p->tiff_samplesperpixel);
            if (samplebuffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %lu bytes of memory for t2p_readwrite_pdf_image, %s",
                          (unsigned long) t2p->tiff_datasize,
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                _TIFFfree(buffer);
            } else {
                buffer = samplebuffer;
                t2p->tiff_datasize *= t2p->tiff_samplesperpixel;
            }
            t2p_sample_realize_palette(t2p, buffer);
        }

        if (t2p->pdf_sample & T2P_SAMPLE_RGBA_TO_RGB) {
            t2p->tiff_datasize = t2p_sample_rgba_to_rgb(
                                     (tdata_t)buffer,
                                     t2p->tiff_width * t2p->tiff_length);
        }

        if (t2p->pdf_sample & T2P_SAMPLE_RGBAA_TO_RGB) {
            t2p->tiff_datasize = t2p_sample_rgbaa_to_rgb(
                                     (tdata_t)buffer,
                                     t2p->tiff_width * t2p->tiff_length);
        }

        if (t2p->pdf_sample & T2P_SAMPLE_YCBCR_TO_RGB) {
            samplebuffer = (unsigned char *)_TIFFrealloc(
                               (tdata_t)buffer,
                               t2p->tiff_width * t2p->tiff_length * 4);
            if (samplebuffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %lu bytes of memory for t2p_readwrite_pdf_image, %s",
                          (unsigned long) t2p->tiff_datasize,
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                _TIFFfree(buffer);
                return (0);
            } else {
                buffer = samplebuffer;
            }
            if (!TIFFReadRGBAImageOriented(
                    input,
                    t2p->tiff_width,
                    t2p->tiff_length,
                    (uint32 *)buffer,
                    ORIENTATION_TOPLEFT,
                    0)) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't use TIFFReadRGBAImageOriented to extract RGB image from %s",
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            t2p->tiff_datasize = t2p_sample_abgr_to_rgb(
                                     (tdata_t) buffer,
                                     t2p->tiff_width * t2p->tiff_length);

        }

        if (t2p->pdf_sample & T2P_SAMPLE_LAB_SIGNED_TO_UNSIGNED) {
            t2p->tiff_datasize = t2p_sample_lab_signed_to_unsigned(
                                     (tdata_t)buffer,
                                     t2p->tiff_width * t2p->tiff_length);
        }
    }

dataready:

    t2p_disable(output);
    TIFFSetField(output, TIFFTAG_PHOTOMETRIC, t2p->tiff_photometric);
    TIFFSetField(output, TIFFTAG_BITSPERSAMPLE, t2p->tiff_bitspersample);
    TIFFSetField(output, TIFFTAG_SAMPLESPERPIXEL, t2p->tiff_samplesperpixel);
    TIFFSetField(output, TIFFTAG_IMAGEWIDTH, t2p->tiff_width);
    TIFFSetField(output, TIFFTAG_IMAGELENGTH, t2p->tiff_length);
    TIFFSetField(output, TIFFTAG_ROWSPERSTRIP, t2p->tiff_length);
    TIFFSetField(output, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
    TIFFSetField(output, TIFFTAG_FILLORDER, FILLORDER_MSB2LSB);

    switch (t2p->pdf_compression) {
        case T2P_COMPRESS_NONE:
            TIFFSetField(output, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
            break;
#ifdef CCITT_SUPPORT
        case T2P_COMPRESS_G4:
            TIFFSetField(output, TIFFTAG_COMPRESSION, COMPRESSION_CCITTFAX4);
            break;
#endif
#ifdef JPEG_SUPPORT
        case T2P_COMPRESS_JPEG:
            if (t2p->tiff_photometric == PHOTOMETRIC_YCBCR) {
                uint16 hor = 0, ver = 0;
                if (TIFFGetField(input, TIFFTAG_YCBCRSUBSAMPLING, &hor, &ver) != 0) {
                    if (hor != 0 && ver != 0) {
                        TIFFSetField(output, TIFFTAG_YCBCRSUBSAMPLING, hor, ver);
                    }
                }
                if (TIFFGetField(input, TIFFTAG_REFERENCEBLACKWHITE, &xfloatp) != 0) {
                    TIFFSetField(output, TIFFTAG_REFERENCEBLACKWHITE, xfloatp);
                }
            }
            if (TIFFSetField(output, TIFFTAG_COMPRESSION, COMPRESSION_JPEG) == 0) {
                TIFFError(TIFF2PDF_MODULE,
                          "Unable to use JPEG compression for input %s and output %s",
                          TIFFFileName(input),
                          TIFFFileName(output));
                _TIFFfree(buffer);
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            TIFFSetField(output, TIFFTAG_JPEGTABLESMODE, 0);

            if (t2p->pdf_colorspace & (T2P_CS_RGB | T2P_CS_LAB)) {
                TIFFSetField(output, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_YCBCR);
                if (t2p->tiff_photometric != PHOTOMETRIC_YCBCR) {
                    TIFFSetField(output, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB);
                } else {
                    TIFFSetField(output, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RAW);
                }
            }
            if (t2p->pdf_colorspace & T2P_CS_GRAY) {
                (void)0;
            }
            if (t2p->pdf_colorspace & T2P_CS_CMYK) {
                (void)0;
            }
            if (t2p->pdf_defaultcompressionquality != 0) {
                TIFFSetField(output,
                             TIFFTAG_JPEGQUALITY,
                             t2p->pdf_defaultcompressionquality);
            }

            break;
#endif
#ifdef ZIP_SUPPORT
        case T2P_COMPRESS_ZIP:
            TIFFSetField(output, TIFFTAG_COMPRESSION, COMPRESSION_DEFLATE);
            if (t2p->pdf_defaultcompressionquality % 100 != 0) {
                TIFFSetField(output,
                             TIFFTAG_PREDICTOR,
                             t2p->pdf_defaultcompressionquality % 100);
            }
            if (t2p->pdf_defaultcompressionquality / 100 != 0) {
                TIFFSetField(output,
                             TIFFTAG_ZIPQUALITY,
                             (t2p->pdf_defaultcompressionquality / 100));
            }
            break;
#endif
        default:
            break;
    }

    t2p_enable(output);
    t2p->outputwritten = 0;
#ifdef JPEG_SUPPORT
    if (t2p->pdf_compression == T2P_COMPRESS_JPEG
        && t2p->tiff_photometric == PHOTOMETRIC_YCBCR) {
        bufferoffset = TIFFWriteEncodedStrip(output, (tstrip_t)0,
                                             buffer,
                                             stripsize * stripcount);
    } else
#endif
    {
        bufferoffset = TIFFWriteEncodedStrip(output, (tstrip_t)0,
                                             buffer,
                                             t2p->tiff_datasize);
    }
    if (buffer != nullptr) {
        _TIFFfree(buffer);
        buffer = nullptr;
    }

    if (bufferoffset == (tsize_t) -1) {
        TIFFError(TIFF2PDF_MODULE,
                  "Error writing encoded strip to output PDF %s",
                  TIFFFileName(output));
        t2p->t2p_error = T2P_ERR_ERROR;
        return (0);
    }

    written = t2p->outputwritten;
    return (written);
}

/*
 * This function reads the raster image data from the input TIFF for an image
 * tile and writes the data to the output PDF XObject image dictionary stream
 * for the tile.  It returns the amount written or zero on error.
 */

tsize_t t2p_readwrite_pdf_image_tile(T2P *t2p, TIFF *input, TIFF *output, ttile_t tile)
{

    uint16 edge = 0;
    tsize_t written = 0;
    unsigned char *buffer = nullptr;
    tsize_t bufferoffset = 0;
    unsigned char *samplebuffer = nullptr;
    tsize_t samplebufferoffset = 0;
    tsize_t read = 0;
    uint16 i = 0;
    ttile_t tilecount = 0;
    tsize_t tilesize = 0;
    ttile_t septilecount = 0;
    tsize_t septilesize = 0;
#ifdef JPEG_SUPPORT
    unsigned char *jpt;
    float *xfloatp;
    uint32 xuint32 = 0;
#endif

    /* Fail if prior error (in particular, can't trust tiff_datasize) */
    if (t2p->t2p_error != T2P_ERR_OK) {
        return (0);
    }

    edge |= t2p_tile_is_right_edge(t2p->tiff_tiles[t2p->pdf_page], tile);
    edge |= t2p_tile_is_bottom_edge(t2p->tiff_tiles[t2p->pdf_page], tile);

    if ((t2p->pdf_transcode == T2P_TRANSCODE_RAW) && ((edge == 0)
#if defined(JPEG_SUPPORT) || defined(OJPEG_SUPPORT)
            || (t2p->pdf_compression == T2P_COMPRESS_JPEG)
#endif
                                                     )
       ) {
#ifdef CCITT_SUPPORT
        if (t2p->pdf_compression == T2P_COMPRESS_G4) {
            buffer = (unsigned char *) _TIFFmalloc(t2p->tiff_datasize);
            if (buffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %lu bytes of memory "
                          "for t2p_readwrite_pdf_image_tile, %s",
                          (unsigned long) t2p->tiff_datasize,
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            TIFFReadRawTile(input, tile, (tdata_t) buffer, t2p->tiff_datasize);
            if (t2p->tiff_fillorder == FILLORDER_LSB2MSB) {
                TIFFReverseBits(buffer, t2p->tiff_datasize);
            }
            t2pWriteFile(output, (tdata_t) buffer, t2p->tiff_datasize);
            _TIFFfree(buffer);
            return (t2p->tiff_datasize);
        }
#endif
#ifdef ZIP_SUPPORT
        if (t2p->pdf_compression == T2P_COMPRESS_ZIP) {
            buffer = (unsigned char *) _TIFFmalloc(t2p->tiff_datasize);
            if (buffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %lu bytes of memory "
                          "for t2p_readwrite_pdf_image_tile, %s",
                          (unsigned long) t2p->tiff_datasize,
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            TIFFReadRawTile(input, tile, (tdata_t) buffer, t2p->tiff_datasize);
            if (t2p->tiff_fillorder == FILLORDER_LSB2MSB) {
                TIFFReverseBits(buffer, t2p->tiff_datasize);
            }
            t2pWriteFile(output, (tdata_t) buffer, t2p->tiff_datasize);
            _TIFFfree(buffer);
            return (t2p->tiff_datasize);
        }
#endif
#ifdef OJPEG_SUPPORT
        if (t2p->tiff_compression == COMPRESSION_OJPEG) {
            if (! t2p->pdf_ojpegdata) {
                TIFFError(TIFF2PDF_MODULE,
                          "No support for OJPEG image %s with "
                          "bad tables",
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            buffer = (unsigned char *) _TIFFmalloc(t2p->tiff_datasize);
            if (buffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %lu bytes of memory "
                          "for t2p_readwrite_pdf_image, %s",
                          (unsigned long) t2p->tiff_datasize,
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            _TIFFmemcpy(buffer, t2p->pdf_ojpegdata, t2p->pdf_ojpegdatalength);
            if (edge != 0) {
                if (t2p_tile_is_bottom_edge(t2p->tiff_tiles[t2p->pdf_page], tile)) {
                    buffer[7] =
                        (t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilelength >> 8) & 0xff;
                    buffer[8] =
                        (t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilelength) & 0xff;
                }
                if (t2p_tile_is_right_edge(t2p->tiff_tiles[t2p->pdf_page], tile)) {
                    buffer[9] =
                        (t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilewidth >> 8) & 0xff;
                    buffer[10] =
                        (t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilewidth) & 0xff;
                }
            }
            bufferoffset = t2p->pdf_ojpegdatalength;
            bufferoffset += TIFFReadRawTile(input,
                                            tile,
                                            (tdata_t) & (((unsigned char *)buffer)[bufferoffset]),
                                            -1);
            ((unsigned char *)buffer)[bufferoffset++] = 0xff;
            ((unsigned char *)buffer)[bufferoffset++] = 0xd9;
            t2pWriteFile(output, (tdata_t) buffer, bufferoffset);
            _TIFFfree(buffer);
            return (bufferoffset);
        }
#endif
#ifdef JPEG_SUPPORT
        if (t2p->tiff_compression == COMPRESSION_JPEG) {
            unsigned char table_end[2];
            uint32 count = 0;
            buffer = (unsigned char *) _TIFFmalloc(t2p->tiff_datasize);
            if (buffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %lu bytes of memory "
                          "for t2p_readwrite_pdf_image_tile, %s",
                          t2p->tiff_datasize,
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            if (TIFFGetField(input, TIFFTAG_JPEGTABLES, &count, &jpt) != 0) {
                if (count > 0) {
                    _TIFFmemcpy(buffer, jpt, count);
                    bufferoffset += count - 2;
                    table_end[0] = buffer[bufferoffset - 2];
                    table_end[1] = buffer[bufferoffset - 1];
                }
                if (count > 0) {
                    xuint32 = bufferoffset;
                    bufferoffset += TIFFReadRawTile(
                                        input,
                                        tile,
                                        (tdata_t) & (((unsigned char *)buffer)[bufferoffset - 2]),
                                        -1);
                    buffer[xuint32 - 2] = table_end[0];
                    buffer[xuint32 - 1] = table_end[1];
                } else {
                    bufferoffset += TIFFReadRawTile(
                                        input,
                                        tile,
                                        (tdata_t) & (((unsigned char *)buffer)[bufferoffset]),
                                        -1);
                }
            }
            t2pWriteFile(output, (tdata_t) buffer, bufferoffset);
            _TIFFfree(buffer);
            return (bufferoffset);
        }
#endif
        (void)0;
    }

    if (t2p->pdf_sample == T2P_SAMPLE_NOTHING) {
        buffer = (unsigned char *) _TIFFmalloc(t2p->tiff_datasize);
        if (buffer == nullptr) {
            TIFFError(TIFF2PDF_MODULE,
                      "Can't allocate %lu bytes of memory for "
                      "t2p_readwrite_pdf_image_tile, %s",
                      (unsigned long) t2p->tiff_datasize,
                      TIFFFileName(input));
            t2p->t2p_error = T2P_ERR_ERROR;
            return (0);
        }

        read = TIFFReadEncodedTile(
                   input,
                   tile,
                   (tdata_t) &buffer[bufferoffset],
                   t2p->tiff_datasize);
        if (read == -1) {
            TIFFError(TIFF2PDF_MODULE,
                      "Error on decoding tile %u of %s",
                      tile,
                      TIFFFileName(input));
            _TIFFfree(buffer);
            t2p->t2p_error = T2P_ERR_ERROR;
            return (0);
        }

    } else {

        if (t2p->pdf_sample == T2P_SAMPLE_PLANAR_SEPARATE_TO_CONTIG) {
            septilesize = TIFFTileSize(input);
            septilecount = TIFFNumberOfTiles(input);
            tilesize = septilesize * t2p->tiff_samplesperpixel;
            tilecount = septilecount / t2p->tiff_samplesperpixel;
            buffer = (unsigned char *) _TIFFmalloc(t2p->tiff_datasize);
            if (buffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %lu bytes of memory "
                          "for t2p_readwrite_pdf_image_tile, %s",
                          (unsigned long) t2p->tiff_datasize,
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            samplebuffer = (unsigned char *) _TIFFmalloc(t2p->tiff_datasize);
            if (samplebuffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %lu bytes of memory "
                          "for t2p_readwrite_pdf_image_tile, %s",
                          (unsigned long) t2p->tiff_datasize,
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            samplebufferoffset = 0;
            for (i = 0; i < t2p->tiff_samplesperpixel; i++) {
                read =
                    TIFFReadEncodedTile(input,
                                        tile + i * tilecount,
                                        (tdata_t) & (samplebuffer[samplebufferoffset]),
                                        septilesize);
                if (read == -1) {
                    TIFFError(TIFF2PDF_MODULE,
                              "Error on decoding tile %u of %s",
                              tile + i * tilecount,
                              TIFFFileName(input));
                    _TIFFfree(samplebuffer);
                    _TIFFfree(buffer);
                    t2p->t2p_error = T2P_ERR_ERROR;
                    return (0);
                }
                samplebufferoffset += read;
            }
            t2p_sample_planar_separate_to_contig(
                t2p,
                &(buffer[bufferoffset]),
                samplebuffer,
                samplebufferoffset);
            bufferoffset += samplebufferoffset;
            _TIFFfree(samplebuffer);
        }

        if (buffer == nullptr) {
            buffer = (unsigned char *) _TIFFmalloc(t2p->tiff_datasize);
            if (buffer == nullptr) {
                TIFFError(TIFF2PDF_MODULE,
                          "Can't allocate %lu bytes of memory "
                          "for t2p_readwrite_pdf_image_tile, %s",
                          (unsigned long) t2p->tiff_datasize,
                          TIFFFileName(input));
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
            read = TIFFReadEncodedTile(
                       input,
                       tile,
                       (tdata_t) &buffer[bufferoffset],
                       t2p->tiff_datasize);
            if (read == -1) {
                TIFFError(TIFF2PDF_MODULE,
                          "Error on decoding tile %u of %s",
                          tile,
                          TIFFFileName(input));
                _TIFFfree(buffer);
                t2p->t2p_error = T2P_ERR_ERROR;
                return (0);
            }
        }

        if (t2p->pdf_sample & T2P_SAMPLE_RGBA_TO_RGB) {
            t2p->tiff_datasize = t2p_sample_rgba_to_rgb(
                                     (tdata_t)buffer,
                                     t2p->tiff_tiles[t2p->pdf_page].tiles_tilewidth
                                     * t2p->tiff_tiles[t2p->pdf_page].tiles_tilelength);
        }

        if (t2p->pdf_sample & T2P_SAMPLE_RGBAA_TO_RGB) {
            t2p->tiff_datasize = t2p_sample_rgbaa_to_rgb(
                                     (tdata_t)buffer,
                                     t2p->tiff_tiles[t2p->pdf_page].tiles_tilewidth
                                     * t2p->tiff_tiles[t2p->pdf_page].tiles_tilelength);
        }

        if (t2p->pdf_sample & T2P_SAMPLE_YCBCR_TO_RGB) {
            TIFFError(TIFF2PDF_MODULE,
                      "No support for YCbCr to RGB in tile for %s",
                      TIFFFileName(input));
            _TIFFfree(buffer);
            t2p->t2p_error = T2P_ERR_ERROR;
            return (0);
        }

        if (t2p->pdf_sample & T2P_SAMPLE_LAB_SIGNED_TO_UNSIGNED) {
            t2p->tiff_datasize = t2p_sample_lab_signed_to_unsigned(
                                     (tdata_t)buffer,
                                     t2p->tiff_tiles[t2p->pdf_page].tiles_tilewidth
                                     * t2p->tiff_tiles[t2p->pdf_page].tiles_tilelength);
        }
    }

    if (t2p_tile_is_right_edge(t2p->tiff_tiles[t2p->pdf_page], tile) != 0) {
        t2p_tile_collapse_left(
            buffer,
            TIFFTileRowSize(input),
            t2p->tiff_tiles[t2p->pdf_page].tiles_tilewidth,
            t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilewidth,
            t2p->tiff_tiles[t2p->pdf_page].tiles_tilelength);
    }


    t2p_disable(output);
    TIFFSetField(output, TIFFTAG_PHOTOMETRIC, t2p->tiff_photometric);
    TIFFSetField(output, TIFFTAG_BITSPERSAMPLE, t2p->tiff_bitspersample);
    TIFFSetField(output, TIFFTAG_SAMPLESPERPIXEL, t2p->tiff_samplesperpixel);
    if (t2p_tile_is_right_edge(t2p->tiff_tiles[t2p->pdf_page], tile) == 0) {
        TIFFSetField(
            output,
            TIFFTAG_IMAGEWIDTH,
            t2p->tiff_tiles[t2p->pdf_page].tiles_tilewidth);
    } else {
        TIFFSetField(
            output,
            TIFFTAG_IMAGEWIDTH,
            t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilewidth);
    }
    if (t2p_tile_is_bottom_edge(t2p->tiff_tiles[t2p->pdf_page], tile) == 0) {
        TIFFSetField(
            output,
            TIFFTAG_IMAGELENGTH,
            t2p->tiff_tiles[t2p->pdf_page].tiles_tilelength);
        TIFFSetField(
            output,
            TIFFTAG_ROWSPERSTRIP,
            t2p->tiff_tiles[t2p->pdf_page].tiles_tilelength);
    } else {
        TIFFSetField(
            output,
            TIFFTAG_IMAGELENGTH,
            t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilelength);
        TIFFSetField(
            output,
            TIFFTAG_ROWSPERSTRIP,
            t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilelength);
    }
    TIFFSetField(output, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
    TIFFSetField(output, TIFFTAG_FILLORDER, FILLORDER_MSB2LSB);

    switch (t2p->pdf_compression) {
        case T2P_COMPRESS_NONE:
            TIFFSetField(output, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
            break;
#ifdef CCITT_SUPPORT
        case T2P_COMPRESS_G4:
            TIFFSetField(output, TIFFTAG_COMPRESSION, COMPRESSION_CCITTFAX4);
            break;
#endif
#ifdef JPEG_SUPPORT
        case T2P_COMPRESS_JPEG:
            if (t2p->tiff_photometric == PHOTOMETRIC_YCBCR) {
                uint16 hor = 0, ver = 0;
                if (TIFFGetField(input, TIFFTAG_YCBCRSUBSAMPLING, &hor, &ver) != 0) {
                    if (hor != 0 && ver != 0) {
                        TIFFSetField(output, TIFFTAG_YCBCRSUBSAMPLING, hor, ver);
                    }
                }
                if (TIFFGetField(input, TIFFTAG_REFERENCEBLACKWHITE, &xfloatp) != 0) {
                    TIFFSetField(output, TIFFTAG_REFERENCEBLACKWHITE, xfloatp);
                }
            }
            TIFFSetField(output, TIFFTAG_COMPRESSION, COMPRESSION_JPEG);
            TIFFSetField(output, TIFFTAG_JPEGTABLESMODE, 0); /* JPEGTABLESMODE_NONE */
            if (t2p->pdf_colorspace & (T2P_CS_RGB | T2P_CS_LAB)) {
                TIFFSetField(output, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_YCBCR);
                if (t2p->tiff_photometric != PHOTOMETRIC_YCBCR) {
                    TIFFSetField(output, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB);
                } else {
                    TIFFSetField(output, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RAW);
                }
            }
            if (t2p->pdf_colorspace & T2P_CS_GRAY) {
                (void)0;
            }
            if (t2p->pdf_colorspace & T2P_CS_CMYK) {
                (void)0;
            }
            if (t2p->pdf_defaultcompressionquality != 0) {
                TIFFSetField(output,
                             TIFFTAG_JPEGQUALITY,
                             t2p->pdf_defaultcompressionquality);
            }
            break;
#endif
#ifdef ZIP_SUPPORT
        case T2P_COMPRESS_ZIP:
            TIFFSetField(output, TIFFTAG_COMPRESSION, COMPRESSION_DEFLATE);
            if (t2p->pdf_defaultcompressionquality % 100 != 0) {
                TIFFSetField(output,
                             TIFFTAG_PREDICTOR,
                             t2p->pdf_defaultcompressionquality % 100);
            }
            if (t2p->pdf_defaultcompressionquality / 100 != 0) {
                TIFFSetField(output,
                             TIFFTAG_ZIPQUALITY,
                             (t2p->pdf_defaultcompressionquality / 100));
            }
            break;
#endif
        default:
            break;
    }

    t2p_enable(output);
    t2p->outputwritten = 0;
    bufferoffset = TIFFWriteEncodedStrip(output, (tstrip_t) 0, buffer,
                                         TIFFStripSize(output));
    if (buffer != nullptr) {
        _TIFFfree(buffer);
        buffer = nullptr;
    }
    if (bufferoffset == -1) {
        TIFFError(TIFF2PDF_MODULE,
                  "Error writing encoded tile to output PDF %s",
                  TIFFFileName(output));
        t2p->t2p_error = T2P_ERR_ERROR;
        return (0);
    }

    written = t2p->outputwritten;

    return (written);
}

#ifdef OJPEG_SUPPORT
int t2p_process_ojpeg_tables(T2P *t2p, TIFF *input)
{
    uint16 proc = 0;
    void *q;
    uint32 q_length = 0;
    void *dc;
    uint32 dc_length = 0;
    void *ac;
    uint32 ac_length = 0;
    uint16 *lp;
    uint16 *pt;
    uint16 h_samp = 1;
    uint16 v_samp = 1;
    unsigned char *ojpegdata;
    uint16 table_count;
    uint32 offset_table;
    uint32 offset_ms_l;
    uint32 code_count;
    uint32 i = 0;
    uint32 dest = 0;
    uint16 ri = 0;
    uint32 rows = 0;

    if (!TIFFGetField(input, TIFFTAG_JPEGPROC, &proc)) {
        TIFFError(TIFF2PDF_MODULE,
                  "Missing JPEGProc field in OJPEG image %s",
                  TIFFFileName(input));
        t2p->t2p_error = T2P_ERR_ERROR;
        return (0);
    }
    if (proc != JPEGPROC_BASELINE && proc != JPEGPROC_LOSSLESS) {
        TIFFError(TIFF2PDF_MODULE,
                  "Bad JPEGProc field in OJPEG image %s",
                  TIFFFileName(input));
        t2p->t2p_error = T2P_ERR_ERROR;
        return (0);
    }
    if (!TIFFGetField(input, TIFFTAG_JPEGQTABLES, &q_length, &q)) {
        TIFFError(TIFF2PDF_MODULE,
                  "Missing JPEGQTables field in OJPEG image %s",
                  TIFFFileName(input));
        t2p->t2p_error = T2P_ERR_ERROR;
        return (0);
    }
    if (q_length < (64U * t2p->tiff_samplesperpixel)) {
        TIFFError(TIFF2PDF_MODULE,
                  "Bad JPEGQTables field in OJPEG image %s",
                  TIFFFileName(input));
        t2p->t2p_error = T2P_ERR_ERROR;
        return (0);
    }
    if (!TIFFGetField(input, TIFFTAG_JPEGDCTABLES, &dc_length, &dc)) {
        TIFFError(TIFF2PDF_MODULE,
                  "Missing JPEGDCTables field in OJPEG image %s",
                  TIFFFileName(input));
        t2p->t2p_error = T2P_ERR_ERROR;
        return (0);
    }
    if (proc == JPEGPROC_BASELINE) {
        if (!TIFFGetField(input, TIFFTAG_JPEGACTABLES, &ac_length, &ac)) {
            TIFFError(TIFF2PDF_MODULE,
                      "Missing JPEGACTables field in OJPEG image %s",
                      TIFFFileName(input));
            t2p->t2p_error = T2P_ERR_ERROR;
            return (0);
        }
    } else {
        if (!TIFFGetField(input, TIFFTAG_JPEGLOSSLESSPREDICTORS, &lp)) {
            TIFFError(TIFF2PDF_MODULE,
                      "Missing JPEGLosslessPredictors field in OJPEG image %s",
                      TIFFFileName(input));
            t2p->t2p_error = T2P_ERR_ERROR;
            return (0);
        }
        if (!TIFFGetField(input, TIFFTAG_JPEGPOINTTRANSFORM, &pt)) {
            TIFFError(TIFF2PDF_MODULE,
                      "Missing JPEGPointTransform field in OJPEG image %s",
                      TIFFFileName(input));
            t2p->t2p_error = T2P_ERR_ERROR;
            return (0);
        }
    }
    if (!TIFFGetField(input, TIFFTAG_YCBCRSUBSAMPLING, &h_samp, &v_samp)) {
        h_samp = 1;
        v_samp = 1;
    }
    if (t2p->pdf_ojpegdata != nullptr) {
        _TIFFfree(t2p->pdf_ojpegdata);
        t2p->pdf_ojpegdata = nullptr;
    }
    t2p->pdf_ojpegdata = _TIFFmalloc(2048);
    if (t2p->pdf_ojpegdata == nullptr) {
        TIFFError(TIFF2PDF_MODULE,
                  "Can't allocate %u bytes of memory for t2p_process_ojpeg_tables, %s",
                  2048,
                  TIFFFileName(input));
        t2p->t2p_error = T2P_ERR_ERROR;
        return (0);
    }
    _TIFFmemset(t2p->pdf_ojpegdata, 0x00, 2048);
    t2p->pdf_ojpegdatalength = 0;
    table_count = t2p->tiff_samplesperpixel;
    if (proc == JPEGPROC_BASELINE) {
        if (table_count > 2) {
            table_count = 2;
        }
    }
    ojpegdata = (unsigned char *)t2p->pdf_ojpegdata;
    ojpegdata[t2p->pdf_ojpegdatalength++] = 0xff;
    ojpegdata[t2p->pdf_ojpegdatalength++] = 0xd8;
    ojpegdata[t2p->pdf_ojpegdatalength++] = 0xff;
    if (proc == JPEGPROC_BASELINE) {
        ojpegdata[t2p->pdf_ojpegdatalength++] = 0xc0;
    } else {
        ojpegdata[t2p->pdf_ojpegdatalength++] = 0xc3;
    }
    ojpegdata[t2p->pdf_ojpegdatalength++] = 0x00;
    ojpegdata[t2p->pdf_ojpegdatalength++] = (8 + 3 * t2p->tiff_samplesperpixel);
    ojpegdata[t2p->pdf_ojpegdatalength++] = (t2p->tiff_bitspersample & 0xff);
    if (TIFFIsTiled(input)) {
        ojpegdata[t2p->pdf_ojpegdatalength++] =
            (t2p->tiff_tiles[t2p->pdf_page].tiles_tilelength >> 8) & 0xff;
        ojpegdata[t2p->pdf_ojpegdatalength++] =
            (t2p->tiff_tiles[t2p->pdf_page].tiles_tilelength) & 0xff;
        ojpegdata[t2p->pdf_ojpegdatalength++] =
            (t2p->tiff_tiles[t2p->pdf_page].tiles_tilewidth >> 8) & 0xff;
        ojpegdata[t2p->pdf_ojpegdatalength++] =
            (t2p->tiff_tiles[t2p->pdf_page].tiles_tilewidth) & 0xff;
    } else {
        ojpegdata[t2p->pdf_ojpegdatalength++] =
            (t2p->tiff_length >> 8) & 0xff;
        ojpegdata[t2p->pdf_ojpegdatalength++] =
            (t2p->tiff_length) & 0xff;
        ojpegdata[t2p->pdf_ojpegdatalength++] =
            (t2p->tiff_width >> 8) & 0xff;
        ojpegdata[t2p->pdf_ojpegdatalength++] =
            (t2p->tiff_width) & 0xff;
    }
    ojpegdata[t2p->pdf_ojpegdatalength++] = (t2p->tiff_samplesperpixel & 0xff);
    for (i = 0; i < t2p->tiff_samplesperpixel; i++) {
        ojpegdata[t2p->pdf_ojpegdatalength++] = i;
        if (i == 0) {
            ojpegdata[t2p->pdf_ojpegdatalength] |= h_samp << 4 & 0xf0;;
            ojpegdata[t2p->pdf_ojpegdatalength++] |= v_samp & 0x0f;
        } else {
            ojpegdata[t2p->pdf_ojpegdatalength++] = 0x11;
        }
        ojpegdata[t2p->pdf_ojpegdatalength++] = i;
    }
    for (dest = 0; dest < t2p->tiff_samplesperpixel; dest++) {
        ojpegdata[t2p->pdf_ojpegdatalength++] = 0xff;
        ojpegdata[t2p->pdf_ojpegdatalength++] = 0xdb;
        ojpegdata[t2p->pdf_ojpegdatalength++] = 0x00;
        ojpegdata[t2p->pdf_ojpegdatalength++] = 0x43;
        ojpegdata[t2p->pdf_ojpegdatalength++] = dest;
        _TIFFmemcpy(&(ojpegdata[t2p->pdf_ojpegdatalength++]),
                    &(((unsigned char *)q)[64 * dest]), 64);
        t2p->pdf_ojpegdatalength += 64;
    }
    offset_table = 0;
    for (dest = 0; dest < table_count; dest++) {
        ojpegdata[t2p->pdf_ojpegdatalength++] = 0xff;
        ojpegdata[t2p->pdf_ojpegdatalength++] = 0xc4;
        offset_ms_l = t2p->pdf_ojpegdatalength;
        t2p->pdf_ojpegdatalength += 2;
        ojpegdata[t2p->pdf_ojpegdatalength++] = dest & 0x0f;
        _TIFFmemcpy(&(ojpegdata[t2p->pdf_ojpegdatalength]),
                    &(((unsigned char *)dc)[offset_table]), 16);
        code_count = 0;
        offset_table += 16;
        for (i = 0; i < 16; i++) {
            code_count += ojpegdata[t2p->pdf_ojpegdatalength++];
        }
        ojpegdata[offset_ms_l] = ((19 + code_count) >> 8) & 0xff;
        ojpegdata[offset_ms_l + 1] = (19 + code_count) & 0xff;
        _TIFFmemcpy(&(ojpegdata[t2p->pdf_ojpegdatalength]),
                    &(((unsigned char *)dc)[offset_table]), code_count);
        offset_table += code_count;
        t2p->pdf_ojpegdatalength += code_count;
    }
    if (proc == JPEGPROC_BASELINE) {
        offset_table = 0;
        for (dest = 0; dest < table_count; dest++) {
            ojpegdata[t2p->pdf_ojpegdatalength++] = 0xff;
            ojpegdata[t2p->pdf_ojpegdatalength++] = 0xc4;
            offset_ms_l = t2p->pdf_ojpegdatalength;
            t2p->pdf_ojpegdatalength += 2;
            ojpegdata[t2p->pdf_ojpegdatalength] |= 0x10;
            ojpegdata[t2p->pdf_ojpegdatalength++] |= dest & 0x0f;
            _TIFFmemcpy(&(ojpegdata[t2p->pdf_ojpegdatalength]),
                        &(((unsigned char *)ac)[offset_table]), 16);
            code_count = 0;
            offset_table += 16;
            for (i = 0; i < 16; i++) {
                code_count += ojpegdata[t2p->pdf_ojpegdatalength++];
            }
            ojpegdata[offset_ms_l] = ((19 + code_count) >> 8) & 0xff;
            ojpegdata[offset_ms_l + 1] = (19 + code_count) & 0xff;
            _TIFFmemcpy(&(ojpegdata[t2p->pdf_ojpegdatalength]),
                        &(((unsigned char *)ac)[offset_table]), code_count);
            offset_table += code_count;
            t2p->pdf_ojpegdatalength += code_count;
        }
    }
    if (TIFFNumberOfStrips(input) > 1) {
        ojpegdata[t2p->pdf_ojpegdatalength++] = 0xff;
        ojpegdata[t2p->pdf_ojpegdatalength++] = 0xdd;
        ojpegdata[t2p->pdf_ojpegdatalength++] = 0x00;
        ojpegdata[t2p->pdf_ojpegdatalength++] = 0x04;
        h_samp *= 8;
        v_samp *= 8;
        ri = (t2p->tiff_width + h_samp - 1) / h_samp;
        TIFFGetField(input, TIFFTAG_ROWSPERSTRIP, &rows);
        ri *= (rows + v_samp - 1) / v_samp;
        ojpegdata[t2p->pdf_ojpegdatalength++] = (ri >> 8) & 0xff;
        ojpegdata[t2p->pdf_ojpegdatalength++] = ri & 0xff;
    }
    ojpegdata[t2p->pdf_ojpegdatalength++] = 0xff;
    ojpegdata[t2p->pdf_ojpegdatalength++] = 0xda;
    ojpegdata[t2p->pdf_ojpegdatalength++] = 0x00;
    ojpegdata[t2p->pdf_ojpegdatalength++] = (6 + 2 * t2p->tiff_samplesperpixel);
    ojpegdata[t2p->pdf_ojpegdatalength++] = t2p->tiff_samplesperpixel & 0xff;
    for (i = 0; i < t2p->tiff_samplesperpixel; i++) {
        ojpegdata[t2p->pdf_ojpegdatalength++] = i & 0xff;
        if (proc == JPEGPROC_BASELINE) {
            ojpegdata[t2p->pdf_ojpegdatalength] |=
                (((i > (table_count - 1U)) ? (table_count - 1U) : i) << 4U) & 0xf0;
            ojpegdata[t2p->pdf_ojpegdatalength++] |=
                ((i > (table_count - 1U)) ? (table_count - 1U) : i) & 0x0f;
        } else {
            ojpegdata[t2p->pdf_ojpegdatalength++] = (i << 4) & 0xf0;
        }
    }
    if (proc == JPEGPROC_BASELINE) {
        t2p->pdf_ojpegdatalength++;
        ojpegdata[t2p->pdf_ojpegdatalength++] = 0x3f;
        t2p->pdf_ojpegdatalength++;
    } else {
        ojpegdata[t2p->pdf_ojpegdatalength++] = (lp[0] & 0xff);
        t2p->pdf_ojpegdatalength++;
        ojpegdata[t2p->pdf_ojpegdatalength++] = (pt[0] & 0x0f);
    }

    return (1);
}
#endif

#ifdef JPEG_SUPPORT
int t2p_process_jpeg_strip(
    unsigned char *strip,
    tsize_t *striplength,
    unsigned char *buffer,
    tsize_t *bufferoffset,
    tstrip_t no,
    uint32 height)
{

    tsize_t i = 0;
    uint16 ri = 0;
    uint16 v_samp = 1;
    uint16 h_samp = 1;
    int j = 0;

    i++;

    while (i < (*striplength)) {
        switch (strip[i]) {
            case 0xd8:
                /* SOI - start of image */
                _TIFFmemcpy(&(buffer[*bufferoffset]), &(strip[i - 1]), 2);
                *bufferoffset += 2;
                i += 2;
                break;
            case 0xc0:
            case 0xc1:
            case 0xc3:
            case 0xc9:
            case 0xca:
                if (no == 0) {
                    _TIFFmemcpy(&(buffer[*bufferoffset]), &(strip[i - 1]), strip[i + 2] + 2);
                    for (j = 0; j < buffer[*bufferoffset + 9]; j++) {
                        if ((buffer[*bufferoffset + 11 + (2 * j)] >> 4) > h_samp) {
                            h_samp = (buffer[*bufferoffset + 11 + (2 * j)] >> 4);
                        }
                        if ((buffer[*bufferoffset + 11 + (2 * j)] & 0x0f) > v_samp) {
                            v_samp = (buffer[*bufferoffset + 11 + (2 * j)] & 0x0f);
                        }
                    }
                    v_samp *= 8;
                    h_samp *= 8;
                    ri = (((((uint16)(buffer[*bufferoffset + 5]) << 8) |
                            (uint16)(buffer[*bufferoffset + 6])) + v_samp - 1) /
                          v_samp);
                    ri *= (((((uint16)(buffer[*bufferoffset + 7]) << 8) |
                             (uint16)(buffer[*bufferoffset + 8])) + h_samp - 1) /
                           h_samp);
                    buffer[*bufferoffset + 5] =
                        (unsigned char)((height >> 8) & 0xff);
                    buffer[*bufferoffset + 6] =
                        (unsigned char)(height & 0xff);
                    *bufferoffset += strip[i + 2] + 2;
                    i += strip[i + 2] + 2;

                    buffer[(*bufferoffset)++] = 0xff;
                    buffer[(*bufferoffset)++] = 0xdd;
                    buffer[(*bufferoffset)++] = 0x00;
                    buffer[(*bufferoffset)++] = 0x04;
                    buffer[(*bufferoffset)++] = (ri >> 8) & 0xff;
                    buffer[(*bufferoffset)++] = ri & 0xff;
                } else {
                    i += strip[i + 2] + 2;
                }
                break;
            case 0xc4:
            case 0xdb:
                _TIFFmemcpy(&(buffer[*bufferoffset]), &(strip[i - 1]), strip[i + 2] + 2);
                *bufferoffset += strip[i + 2] + 2;
                i += strip[i + 2] + 2;
                break;
            case 0xda:
                if (no == 0) {
                    _TIFFmemcpy(&(buffer[*bufferoffset]), &(strip[i - 1]), strip[i + 2] + 2);
                    *bufferoffset += strip[i + 2] + 2;
                    i += strip[i + 2] + 2;
                } else {
                    buffer[(*bufferoffset)++] = 0xff;
                    buffer[(*bufferoffset)++] =
                        (unsigned char)(0xd0 | ((no - 1) % 8));
                    i += strip[i + 2] + 2;
                }
                _TIFFmemcpy(&(buffer[*bufferoffset]), &(strip[i - 1]), (*striplength) - i - 1);
                *bufferoffset += (*striplength) - i - 1;
                return (1);
            default:
                i += strip[i + 2] + 2;
        }
    }


    return (0);
}
#endif

/*
    This functions converts a tilewidth x tilelength buffer of samples into an edgetilewidth x
    tilelength buffer of samples.
*/
void t2p_tile_collapse_left(
    tdata_t buffer,
    tsize_t scanwidth,
    uint32 tilewidth,
    uint32 edgetilewidth,
    uint32 tilelength)
{

    uint32 i;
    tsize_t edgescanwidth = 0;

    edgescanwidth = (scanwidth * edgetilewidth + (tilewidth - 1)) / tilewidth;
    for (i = 0; i < tilelength; i++) {
        _TIFFmemcpy(
            &(((char *)buffer)[edgescanwidth * i]),
            &(((char *)buffer)[scanwidth * i]),
            edgescanwidth);
    }

    return;
}


/*
 * This function calls TIFFWriteDirectory on the output after blanking its
 * output by replacing the read, write, and seek procedures with empty
 * implementations, then it replaces the original implementations.
 */

void
t2p_write_advance_directory(T2P *t2p, TIFF *output)
{
    t2p_disable(output);
    if (!TIFFWriteDirectory(output)) {
        TIFFError(TIFF2PDF_MODULE,
                  "Error writing virtual directory to output PDF %s",
                  TIFFFileName(output));
        t2p->t2p_error = T2P_ERR_ERROR;
        return;
    }
    t2p_enable(output);
    return;
}

tsize_t t2p_sample_planar_separate_to_contig(
    T2P *t2p,
    unsigned char *buffer,
    unsigned char *samplebuffer,
    tsize_t samplebuffersize)
{

    tsize_t stride = 0;
    tsize_t i = 0;
    tsize_t j = 0;

    stride = samplebuffersize / t2p->tiff_samplesperpixel;
    for (i = 0; i < stride; i++) {
        for (j = 0; j < t2p->tiff_samplesperpixel; j++) {
            buffer[i * t2p->tiff_samplesperpixel + j] = samplebuffer[i + j * stride];
        }
    }

    return (samplebuffersize);
}

tsize_t t2p_sample_realize_palette(T2P *t2p, unsigned char *buffer)
{

    uint32 sample_count = 0;
    uint16 component_count = 0;
    uint32 palette_offset = 0;
    uint32 sample_offset = 0;
    uint32 i = 0;
    uint32 j = 0;
    sample_count = t2p->tiff_width * t2p->tiff_length;
    component_count = t2p->tiff_samplesperpixel;

    for (i = sample_count; i > 0; i--) {
        palette_offset = buffer[i - 1] * component_count;
        sample_offset = (i - 1) * component_count;
        for (j = 0; j < component_count; j++) {
            buffer[sample_offset + j] = t2p->pdf_palette[palette_offset + j];
        }
    }

    return (0);
}

/*
    This functions converts in place a buffer of ABGR interleaved data
    into RGB interleaved data, discarding A.
*/

tsize_t t2p_sample_abgr_to_rgb(tdata_t data, uint32 samplecount)
{
    uint32 i = 0;
    uint32 sample = 0;

    for (i = 0; i < samplecount; i++) {
        sample = ((uint32 *)data)[i];
        ((char *)data)[i * 3] = (char)(sample & 0xff);
        ((char *)data)[i * 3 + 1] = (char)((sample >> 8) & 0xff);
        ((char *)data)[i * 3 + 2] = (char)((sample >> 16) & 0xff);
    }

    return (i * 3);
}

/*
 * This functions converts in place a buffer of RGBA interleaved data
 * into RGB interleaved data, discarding A.
 */

tsize_t
t2p_sample_rgbaa_to_rgb(tdata_t data, uint32 samplecount)
{
    uint32 i;

    for (i = 0; i < samplecount; i++) {
        memcpy((uint8 *)data + i * 3, (uint8 *)data + i * 4, 3);
    }

    return (i * 3);
}

/*
 * This functions converts in place a buffer of RGBA interleaved data
 * into RGB interleaved data, adding 255-A to each component sample.
 */

tsize_t
t2p_sample_rgba_to_rgb(tdata_t data, uint32 samplecount)
{
    uint32 i = 0;
    uint32 sample = 0;
    uint8 alpha = 0;

    for (i = 0; i < samplecount; i++) {
        sample = ((uint32 *)data)[i];
        alpha = (uint8)((255 - ((sample >> 24) & 0xff)));
        ((uint8 *)data)[i * 3] = (uint8)((sample >> 16) & 0xff) + alpha;
        ((uint8 *)data)[i * 3 + 1] = (uint8)((sample >> 8) & 0xff) + alpha;
        ((uint8 *)data)[i * 3 + 2] = (uint8)(sample & 0xff) + alpha;
    }

    return (i * 3);
}

/*
    This function converts the a and b samples of Lab data from signed
    to unsigned.
*/

tsize_t t2p_sample_lab_signed_to_unsigned(tdata_t buffer, uint32 samplecount)
{

    uint32 i = 0;

    for (i = 0; i < samplecount; i++) {
        if ((((unsigned char *)buffer)[(i * 3) + 1] & 0x80) != 0) {
            ((unsigned char *)buffer)[(i * 3) + 1] =
                (unsigned char)(0x80 + ((char *)buffer)[(i * 3) + 1]);
        } else {
            ((unsigned char *)buffer)[(i * 3) + 1] |= 0x80;
        }
        if ((((unsigned char *)buffer)[(i * 3) + 2] & 0x80) != 0) {
            ((unsigned char *)buffer)[(i * 3) + 2] =
                (unsigned char)(0x80 + ((char *)buffer)[(i * 3) + 2]);
        } else {
            ((unsigned char *)buffer)[(i * 3) + 2] |= 0x80;
        }
    }

    return (samplecount * 3);
}

/*
    This function writes the PDF header to output.
*/

tsize_t t2p_write_pdf_header(T2P *t2p, TIFF *output)
{

    tsize_t written = 0;
    char buffer[16];
    int buflen = 0;

    buflen = sprintf(buffer, "%%PDF-%u.%u ", t2p->pdf_majorversion & 0xff, t2p->pdf_minorversion & 0xff);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t)"\n%\342\343\317\323\n", 7);

    return (written);
}

/*
    This function writes the beginning of a PDF object to output.
*/

tsize_t t2p_write_pdf_obj_start(uint32 number, TIFF *output)
{

    tsize_t written = 0;
    char buffer[16];
    int buflen = 0;

    buflen = sprintf(buffer, "%lu", (unsigned long)number);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) " 0 obj\n", 7);

    return (written);
}

/*
    This function writes the end of a PDF object to output.
*/

tsize_t t2p_write_pdf_obj_end(TIFF *output)
{

    tsize_t written = 0;

    written += t2pWriteFile(output, (tdata_t) "endobj\n", 7);

    return (written);
}

/*
    This function writes a PDF name object to output.
*/

tsize_t t2p_write_pdf_name(unsigned char *name, TIFF *output)
{

    tsize_t written = 0;
    uint32 i = 0;
    char buffer[64];
    uint16 nextchar = 0;
    size_t namelen = 0;

    namelen = strlen((char *)name);
    if (namelen > 126) {
        namelen = 126;
    }
    written += t2pWriteFile(output, (tdata_t) "/", 1);
    for (i = 0; i < namelen; i++) {
        if (((unsigned char)name[i]) < 0x21) {
            sprintf(buffer, "#%.2X", name[i]);
            buffer[sizeof(buffer) - 1] = '\0';
            written += t2pWriteFile(output, (tdata_t) buffer, 3);
            nextchar = 1;
        }
        if (((unsigned char)name[i]) > 0x7E) {
            sprintf(buffer, "#%.2X", name[i]);
            buffer[sizeof(buffer) - 1] = '\0';
            written += t2pWriteFile(output, (tdata_t) buffer, 3);
            nextchar = 1;
        }
        if (nextchar == 0) {
            switch (name[i]) {
                case 0x23:
                    sprintf(buffer, "#%.2X", name[i]);
                    buffer[sizeof(buffer) - 1] = '\0';
                    written += t2pWriteFile(output, (tdata_t) buffer, 3);
                    break;
                case 0x25:
                    sprintf(buffer, "#%.2X", name[i]);
                    buffer[sizeof(buffer) - 1] = '\0';
                    written += t2pWriteFile(output, (tdata_t) buffer, 3);
                    break;
                case 0x28:
                    sprintf(buffer, "#%.2X", name[i]);
                    buffer[sizeof(buffer) - 1] = '\0';
                    written += t2pWriteFile(output, (tdata_t) buffer, 3);
                    break;
                case 0x29:
                    sprintf(buffer, "#%.2X", name[i]);
                    buffer[sizeof(buffer) - 1] = '\0';
                    written += t2pWriteFile(output, (tdata_t) buffer, 3);
                    break;
                case 0x2F:
                    sprintf(buffer, "#%.2X", name[i]);
                    buffer[sizeof(buffer) - 1] = '\0';
                    written += t2pWriteFile(output, (tdata_t) buffer, 3);
                    break;
                case 0x3C:
                    sprintf(buffer, "#%.2X", name[i]);
                    buffer[sizeof(buffer) - 1] = '\0';
                    written += t2pWriteFile(output, (tdata_t) buffer, 3);
                    break;
                case 0x3E:
                    sprintf(buffer, "#%.2X", name[i]);
                    buffer[sizeof(buffer) - 1] = '\0';
                    written += t2pWriteFile(output, (tdata_t) buffer, 3);
                    break;
                case 0x5B:
                    sprintf(buffer, "#%.2X", name[i]);
                    buffer[sizeof(buffer) - 1] = '\0';
                    written += t2pWriteFile(output, (tdata_t) buffer, 3);
                    break;
                case 0x5D:
                    sprintf(buffer, "#%.2X", name[i]);
                    buffer[sizeof(buffer) - 1] = '\0';
                    written += t2pWriteFile(output, (tdata_t) buffer, 3);
                    break;
                case 0x7B:
                    sprintf(buffer, "#%.2X", name[i]);
                    buffer[sizeof(buffer) - 1] = '\0';
                    written += t2pWriteFile(output, (tdata_t) buffer, 3);
                    break;
                case 0x7D:
                    sprintf(buffer, "#%.2X", name[i]);
                    buffer[sizeof(buffer) - 1] = '\0';
                    written += t2pWriteFile(output, (tdata_t) buffer, 3);
                    break;
                default:
                    written += t2pWriteFile(output, (tdata_t) &name[i], 1);
            }
        }
        nextchar = 0;
    }
    written += t2pWriteFile(output, (tdata_t) " ", 1);

    return (written);
}

/*
 * This function writes a PDF string object to output.
 */

tsize_t t2p_write_pdf_string(char *pdfstr, TIFF *output)
{
    tsize_t written = 0;
    uint32 i = 0;
    char buffer[64];
    size_t len = 0;

    len = strlen(pdfstr);
    written += t2pWriteFile(output, (tdata_t) "(", 1);
    for (i = 0; i < len; i++) {
        if ((pdfstr[i] & 0x80) || (pdfstr[i] == 127) || (pdfstr[i] < 32)) {
            snprintf(buffer, sizeof(buffer), "\\%.3o", ((unsigned char)pdfstr[i]));
            written += t2pWriteFile(output, (tdata_t)buffer, 4);
        } else {
            switch (pdfstr[i]) {
                case 0x08:
                    written += t2pWriteFile(output, (tdata_t) "\\b", 2);
                    break;
                case 0x09:
                    written += t2pWriteFile(output, (tdata_t) "\\t", 2);
                    break;
                case 0x0A:
                    written += t2pWriteFile(output, (tdata_t) "\\n", 2);
                    break;
                case 0x0C:
                    written += t2pWriteFile(output, (tdata_t) "\\f", 2);
                    break;
                case 0x0D:
                    written += t2pWriteFile(output, (tdata_t) "\\r", 2);
                    break;
                case 0x28:
                    written += t2pWriteFile(output, (tdata_t) "\\(", 2);
                    break;
                case 0x29:
                    written += t2pWriteFile(output, (tdata_t) "\\)", 2);
                    break;
                case 0x5C:
                    written += t2pWriteFile(output, (tdata_t) "\\\\", 2);
                    break;
                default:
                    written += t2pWriteFile(output, (tdata_t) &pdfstr[i], 1);
            }
        }
    }
    written += t2pWriteFile(output, (tdata_t) ") ", 1);

    return (written);
}


/*
    This function writes a buffer of data to output.
*/

tsize_t t2p_write_pdf_stream(tdata_t buffer, tsize_t len, TIFF *output)
{

    tsize_t written = 0;

    written += t2pWriteFile(output, (tdata_t) buffer, len);

    return (written);
}

/*
    This functions writes the beginning of a PDF stream to output.
*/

tsize_t t2p_write_pdf_stream_start(TIFF *output)
{

    tsize_t written = 0;

    written += t2pWriteFile(output, (tdata_t) "stream\n", 7);

    return (written);
}

/*
    This function writes the end of a PDF stream to output.
*/

tsize_t t2p_write_pdf_stream_end(TIFF *output)
{

    tsize_t written = 0;

    written += t2pWriteFile(output, (tdata_t) "\nendstream\n", 11);

    return (written);
}

/*
    This function writes a stream dictionary for a PDF stream to output.
*/

tsize_t t2p_write_pdf_stream_dict(tsize_t len, uint32 number, TIFF *output)
{

    tsize_t written = 0;
    char buffer[16];
    int buflen = 0;

    written += t2pWriteFile(output, (tdata_t) "/Length ", 8);
    if (len != 0) {
        written += t2p_write_pdf_stream_length(len, output);
    } else {
        buflen = sprintf(buffer, "%lu", (unsigned long)number);
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) " 0 R \n", 6);
    }

    return (written);
}

/*
    This functions writes the beginning of a PDF stream dictionary to output.
*/

tsize_t t2p_write_pdf_stream_dict_start(TIFF *output)
{

    tsize_t written = 0;

    written += t2pWriteFile(output, (tdata_t) "<< \n", 4);

    return (written);
}

/*
    This function writes the end of a PDF stream dictionary to output.
*/

tsize_t t2p_write_pdf_stream_dict_end(TIFF *output)
{

    tsize_t written = 0;

    written += t2pWriteFile(output, (tdata_t) " >>\n", 4);

    return (written);
}

/*
    This function writes a number to output.
*/

tsize_t t2p_write_pdf_stream_length(tsize_t len, TIFF *output)
{

    tsize_t written = 0;
    char buffer[16];
    int buflen = 0;

    buflen = sprintf(buffer, "%lu", (unsigned long)len);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) "\n", 1);

    return (written);
}

/*
 * This function writes the PDF Catalog structure to output.
 */

tsize_t t2p_write_pdf_catalog(T2P *t2p, TIFF *output)
{
    tsize_t written = 0;
    char buffer[16];
    int buflen = 0;

    written += t2pWriteFile(output,
                            (tdata_t)"<< \n/Type /Catalog \n/Pages ",
                            27);
    buflen = snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)t2p->pdf_pages);
    written += t2pWriteFile(output, (tdata_t) buffer,
                            qMin((size_t)buflen, sizeof(buffer) - 1));
    written += t2pWriteFile(output, (tdata_t) " 0 R \n", 6);
    if (t2p->pdf_fitwindow) {
        written += t2pWriteFile(output,
                                (tdata_t) "/ViewerPreferences <</FitWindow true>>\n",
                                39);
    }
    written += t2pWriteFile(output, (tdata_t)">>\n", 3);

    return (written);
}

/*
    This function writes the PDF Info structure to output.
*/

tsize_t t2p_write_pdf_info(T2P *t2p, TIFF *input, TIFF *output)
{
    tsize_t written = 0;
    char *info;
    char buffer[512];

    if (t2p->pdf_datetime[0] == '\0') {
        t2p_pdf_tifftime(t2p, input);
    }
    if (strlen(t2p->pdf_datetime) > 0) {
        written += t2pWriteFile(output, (tdata_t) "<< \n/CreationDate ", 18);
        written += t2p_write_pdf_string(t2p->pdf_datetime, output);
        written += t2pWriteFile(output, (tdata_t) "\n/ModDate ", 10);
        written += t2p_write_pdf_string(t2p->pdf_datetime, output);
    }
    written += t2pWriteFile(output, (tdata_t) "\n/Producer ", 11);
    _TIFFmemset((tdata_t)buffer, 0x00, sizeof(buffer));
    snprintf(buffer, sizeof(buffer), "libtiff / tiff2pdf - %d", TIFFLIB_VERSION);
    written += t2p_write_pdf_string(buffer, output);
    written += t2pWriteFile(output, (tdata_t) "\n", 1);
    if (t2p->pdf_creator[0] != '\0') {
        written += t2pWriteFile(output, (tdata_t) "/Creator ", 9);
        written += t2p_write_pdf_string(t2p->pdf_creator, output);
        written += t2pWriteFile(output, (tdata_t) "\n", 1);
    } else {
        if (TIFFGetField(input, TIFFTAG_SOFTWARE, &info) != 0 && info) {
            if (strlen(info) >= sizeof(t2p->pdf_creator)) {
                info[sizeof(t2p->pdf_creator) - 1] = '\0';
            }
            written += t2pWriteFile(output, (tdata_t) "/Creator ", 9);
            written += t2p_write_pdf_string(info, output);
            written += t2pWriteFile(output, (tdata_t) "\n", 1);
        }
    }
    if (t2p->pdf_author[0] != '\0') {
        written += t2pWriteFile(output, (tdata_t) "/Author ", 8);
        written += t2p_write_pdf_string(t2p->pdf_author, output);
        written += t2pWriteFile(output, (tdata_t) "\n", 1);
    } else {
        if ((TIFFGetField(input, TIFFTAG_ARTIST, &info) != 0
             || TIFFGetField(input, TIFFTAG_COPYRIGHT, &info) != 0)
            && info) {
            if (strlen(info) >= sizeof(t2p->pdf_author)) {
                info[sizeof(t2p->pdf_author) - 1] = '\0';
            }
            written += t2pWriteFile(output, (tdata_t) "/Author ", 8);
            written += t2p_write_pdf_string(info, output);
            written += t2pWriteFile(output, (tdata_t) "\n", 1);
        }
    }
    if (t2p->pdf_title[0] != '\0') {
        written += t2pWriteFile(output, (tdata_t) "/Title ", 7);
        written += t2p_write_pdf_string(t2p->pdf_title, output);
        written += t2pWriteFile(output, (tdata_t) "\n", 1);
    } else {
        if (TIFFGetField(input, TIFFTAG_DOCUMENTNAME, &info) != 0) {
            if (strlen(info) > 511) {
                info[512] = '\0';
            }
            written += t2pWriteFile(output, (tdata_t) "/Title ", 7);
            written += t2p_write_pdf_string(info, output);
            written += t2pWriteFile(output, (tdata_t) "\n", 1);
        }
    }
    if (t2p->pdf_subject[0] != '\0') {
        written += t2pWriteFile(output, (tdata_t) "/Subject ", 9);
        written += t2p_write_pdf_string(t2p->pdf_subject, output);
        written += t2pWriteFile(output, (tdata_t) "\n", 1);
    } else {
        if (TIFFGetField(input, TIFFTAG_IMAGEDESCRIPTION, &info) != 0 && info) {
            if (strlen(info) >= sizeof(t2p->pdf_subject)) {
                info[sizeof(t2p->pdf_subject) - 1] = '\0';
            }
            written += t2pWriteFile(output, (tdata_t) "/Subject ", 9);
            written += t2p_write_pdf_string(info, output);
            written += t2pWriteFile(output, (tdata_t) "\n", 1);
        }
    }
    if (t2p->pdf_keywords[0] != '\0') {
        written += t2pWriteFile(output, (tdata_t) "/Keywords ", 10);
        written += t2p_write_pdf_string(t2p->pdf_keywords, output);
        written += t2pWriteFile(output, (tdata_t) "\n", 1);
    }
    written += t2pWriteFile(output, (tdata_t) ">> \n", 4);

    return (written);
}

/*
 * This function fills a string of a T2P struct with the current time as a PDF
 * date string, it is called by t2p_pdf_tifftime.
 */

void t2p_pdf_currenttime(T2P *t2p)
{
    struct tm *currenttime;
    time_t timenow;

    if (time(&timenow) == (time_t) -1) {
        TIFFError(TIFF2PDF_MODULE,
                  "Can't get the current time: %s", strerror(errno));
        timenow = (time_t) 0;
    }

    currenttime = localtime(&timenow);
    snprintf(t2p->pdf_datetime, sizeof(t2p->pdf_datetime),
             "D:%.4d%.2d%.2d%.2d%.2d%.2d",
             (currenttime->tm_year + 1900) % 65536,
             (currenttime->tm_mon + 1) % 256,
             (currenttime->tm_mday) % 256,
             (currenttime->tm_hour) % 256,
             (currenttime->tm_min) % 256,
             (currenttime->tm_sec) % 256);

    return;
}

/*
 * This function fills a string of a T2P struct with the date and time of a
 * TIFF file if it exists or the current time as a PDF date string.
 */

void t2p_pdf_tifftime(T2P *t2p, TIFF *input)
{
    char *datetime;

    if (TIFFGetField(input, TIFFTAG_DATETIME, &datetime) != 0
        && (strlen(datetime) >= 19)) {
        t2p->pdf_datetime[0] = 'D';
        t2p->pdf_datetime[1] = ':';
        t2p->pdf_datetime[2] = datetime[0];
        t2p->pdf_datetime[3] = datetime[1];
        t2p->pdf_datetime[4] = datetime[2];
        t2p->pdf_datetime[5] = datetime[3];
        t2p->pdf_datetime[6] = datetime[5];
        t2p->pdf_datetime[7] = datetime[6];
        t2p->pdf_datetime[8] = datetime[8];
        t2p->pdf_datetime[9] = datetime[9];
        t2p->pdf_datetime[10] = datetime[11];
        t2p->pdf_datetime[11] = datetime[12];
        t2p->pdf_datetime[12] = datetime[14];
        t2p->pdf_datetime[13] = datetime[15];
        t2p->pdf_datetime[14] = datetime[17];
        t2p->pdf_datetime[15] = datetime[18];
        t2p->pdf_datetime[16] = '\0';
    } else {
        t2p_pdf_currenttime(t2p);
    }

    return;
}

/*
 * This function writes a PDF Pages Tree structure to output.
 */

tsize_t t2p_write_pdf_pages(T2P *t2p, TIFF *output)
{
    tsize_t written = 0;
    tdir_t i = 0;
    char buffer[16];
    int buflen = 0;

    int page = 0;
    written += t2pWriteFile(output,
                            (tdata_t) "<< \n/Type /Pages \n/Kids [ ", 26);
    page = t2p->pdf_pages + 1;
    for (i = 0; i < t2p->tiff_pagecount; i++) {
        buflen = sprintf(buffer, "%d", page);
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
        if (((i + 1) % 8) == 0) {
            written += t2pWriteFile(output, (tdata_t) "\n", 1);
        }
        page += 3;
        page += t2p->tiff_pages[i].page_extra;
        if (t2p->tiff_pages[i].page_tilecount > 0) {
            page += (2 * t2p->tiff_pages[i].page_tilecount);
        } else {
            page += 2;
        }
    }
    written += t2pWriteFile(output, (tdata_t) "] \n/Count ", 10);
    _TIFFmemset(buffer, 0x00, 16);
    buflen = sprintf(buffer, "%d", t2p->tiff_pagecount);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) " \n>> \n", 6);

    return (written);
}

/*
    This function writes a PDF Page structure to output.
*/

tsize_t t2p_write_pdf_page(uint32 object, T2P *t2p, TIFF *output)
{

    unsigned int i = 0;
    tsize_t written = 0;
    char buffer[16];
    int buflen = 0;

    written += t2pWriteFile(output, (tdata_t) "<<\n/Type /Page \n/Parent ", 24);
    buflen = sprintf(buffer, "%lu", (unsigned long)t2p->pdf_pages);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) " 0 R \n", 6);
    written += t2pWriteFile(output, (tdata_t) "/MediaBox [", 11);
    buflen = sprintf(buffer, "%.4f", t2p->pdf_mediabox.x1);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) " ", 1);
    buflen = sprintf(buffer, "%.4f", t2p->pdf_mediabox.y1);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) " ", 1);
    buflen = sprintf(buffer, "%.4f", t2p->pdf_mediabox.x2);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) " ", 1);
    buflen = sprintf(buffer, "%.4f", t2p->pdf_mediabox.y2);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) "] \n", 3);
    written += t2pWriteFile(output, (tdata_t) "/Contents ", 10);
    buflen = sprintf(buffer, "%lu", (unsigned long)(object + 1));
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) " 0 R \n", 6);
    written += t2pWriteFile(output, (tdata_t) "/Resources << \n", 15);
    if (t2p->tiff_tiles[t2p->pdf_page].tiles_tilecount != 0) {
        written += t2pWriteFile(output, (tdata_t) "/XObject <<\n", 12);
        for (i = 0; i < t2p->tiff_tiles[t2p->pdf_page].tiles_tilecount; i++) {
            written += t2pWriteFile(output, (tdata_t) "/Im", 3);
            buflen = sprintf(buffer, "%u", t2p->pdf_page + 1);
            written += t2pWriteFile(output, (tdata_t) buffer, buflen);
            written += t2pWriteFile(output, (tdata_t) "_", 1);
            buflen = sprintf(buffer, "%u", i + 1);
            written += t2pWriteFile(output, (tdata_t) buffer, buflen);
            written += t2pWriteFile(output, (tdata_t) " ", 1);
            buflen = sprintf(
                         buffer,
                         "%lu",
                         (unsigned long)(object + 3 + (2 * i) + t2p->tiff_pages[t2p->pdf_page].page_extra));
            written += t2pWriteFile(output, (tdata_t) buffer, buflen);
            written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
            if (i % 4 == 3) {
                written += t2pWriteFile(output, (tdata_t) "\n", 1);
            }
        }
        written += t2pWriteFile(output, (tdata_t) ">>\n", 3);
    } else {
        written += t2pWriteFile(output, (tdata_t) "/XObject <<\n", 12);
        written += t2pWriteFile(output, (tdata_t) "/Im", 3);
        buflen = sprintf(buffer, "%u", t2p->pdf_page + 1);
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) " ", 1);
        buflen = sprintf(
                     buffer,
                     "%lu",
                     (unsigned long)(object + 3 + (2 * i) + t2p->tiff_pages[t2p->pdf_page].page_extra));
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
        written += t2pWriteFile(output, (tdata_t) ">>\n", 3);
    }
    if (t2p->tiff_transferfunctioncount != 0) {
        written += t2pWriteFile(output, (tdata_t) "/ExtGState <<", 13);
        t2pWriteFile(output, (tdata_t) "/GS1 ", 5);
        buflen = sprintf(
                     buffer,
                     "%lu",
                     (unsigned long)(object + 3));
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
        written += t2pWriteFile(output, (tdata_t) ">> \n", 4);
    }
    written += t2pWriteFile(output, (tdata_t) "/ProcSet [ ", 11);
    if (t2p->pdf_colorspace == T2P_CS_BILEVEL
        || t2p->pdf_colorspace == T2P_CS_GRAY
       ) {
        written += t2pWriteFile(output, (tdata_t) "/ImageB ", 8);
    } else {
        written += t2pWriteFile(output, (tdata_t) "/ImageC ", 8);
        if (t2p->pdf_colorspace & T2P_CS_PALETTE) {
            written += t2pWriteFile(output, (tdata_t) "/ImageI ", 8);
        }
    }
    written += t2pWriteFile(output, (tdata_t) "]\n>>\n>>\n", 8);

    return (written);
}

/*
    This function composes the page size and image and tile locations on a page.
*/

void t2p_compose_pdf_page(T2P *t2p)
{

    uint32 i = 0;
    uint32 i2 = 0;
    T2P_TILE *tiles = nullptr;
    T2P_BOX *boxp = nullptr;
    uint32 tilecountx = 0;
    uint32 tilecounty = 0;
    uint32 tilewidth = 0;
    uint32 tilelength = 0;
    int istiled = 0;
    float f = 0;
    float width_ratio = 0;
    float length_ratio = 0;

    t2p->pdf_xres = t2p->tiff_xres;
    t2p->pdf_yres = t2p->tiff_yres;
    if (t2p->pdf_overrideres) {
        t2p->pdf_xres = t2p->pdf_defaultxres;
        t2p->pdf_yres = t2p->pdf_defaultyres;
    }
    if (t2p->pdf_xres == 0.0) {
        t2p->pdf_xres = t2p->pdf_defaultxres;
    }
    if (t2p->pdf_yres == 0.0) {
        t2p->pdf_yres = t2p->pdf_defaultyres;
    }
    if (t2p->pdf_image_fillpage) {
        width_ratio = t2p->pdf_defaultpagewidth / t2p->tiff_width;
        length_ratio = t2p->pdf_defaultpagelength / t2p->tiff_length;
        if (width_ratio < length_ratio) {
            t2p->pdf_imagewidth = t2p->pdf_defaultpagewidth;
            t2p->pdf_imagelength = t2p->tiff_length * width_ratio;
        } else {
            t2p->pdf_imagewidth = t2p->tiff_width * length_ratio;
            t2p->pdf_imagelength = t2p->pdf_defaultpagelength;
        }
    } else if (t2p->tiff_resunit != RESUNIT_CENTIMETER	/* RESUNIT_NONE and */
               && t2p->tiff_resunit != RESUNIT_INCH) {	/* other cases */
        t2p->pdf_imagewidth = ((float)(t2p->tiff_width)) / t2p->pdf_xres;
        t2p->pdf_imagelength = ((float)(t2p->tiff_length)) / t2p->pdf_yres;
    } else {
        t2p->pdf_imagewidth =
            ((float)(t2p->tiff_width)) * PS_UNIT_SIZE / t2p->pdf_xres;
        t2p->pdf_imagelength =
            ((float)(t2p->tiff_length)) * PS_UNIT_SIZE / t2p->pdf_yres;
    }
    if (t2p->pdf_overridepagesize != 0) {
        t2p->pdf_pagewidth = t2p->pdf_defaultpagewidth;
        t2p->pdf_pagelength = t2p->pdf_defaultpagelength;
    } else {
        t2p->pdf_pagewidth = t2p->pdf_imagewidth;
        t2p->pdf_pagelength = t2p->pdf_imagelength;
    }
    t2p->pdf_mediabox.x1 = 0.0;
    t2p->pdf_mediabox.y1 = 0.0;
    t2p->pdf_mediabox.x2 = t2p->pdf_pagewidth;
    t2p->pdf_mediabox.y2 = t2p->pdf_pagelength;
    t2p->pdf_imagebox.x1 = 0.0;
    t2p->pdf_imagebox.y1 = 0.0;
    t2p->pdf_imagebox.x2 = t2p->pdf_imagewidth;
    t2p->pdf_imagebox.y2 = t2p->pdf_imagelength;
    if (t2p->pdf_overridepagesize != 0) {
        t2p->pdf_imagebox.x1 += ((t2p->pdf_pagewidth - t2p->pdf_imagewidth) / 2.0F);
        t2p->pdf_imagebox.y1 += ((t2p->pdf_pagelength - t2p->pdf_imagelength) / 2.0F);
        t2p->pdf_imagebox.x2 += ((t2p->pdf_pagewidth - t2p->pdf_imagewidth) / 2.0F);
        t2p->pdf_imagebox.y2 += ((t2p->pdf_pagelength - t2p->pdf_imagelength) / 2.0F);
    }
    if (t2p->tiff_orientation > 4) {
        f = t2p->pdf_mediabox.x2;
        t2p->pdf_mediabox.x2 = t2p->pdf_mediabox.y2;
        t2p->pdf_mediabox.y2 = f;
    }
    istiled = ((t2p->tiff_tiles[t2p->pdf_page]).tiles_tilecount == 0) ? 0 : 1;
    if (istiled == 0) {
        t2p_compose_pdf_page_orient(&(t2p->pdf_imagebox), t2p->tiff_orientation);
        return;
    } else {
        tilewidth = (t2p->tiff_tiles[t2p->pdf_page]).tiles_tilewidth;
        tilelength = (t2p->tiff_tiles[t2p->pdf_page]).tiles_tilelength;
        tilecountx = (t2p->tiff_width +
                      tilewidth - 1) /
                     tilewidth;
        (t2p->tiff_tiles[t2p->pdf_page]).tiles_tilecountx = tilecountx;
        tilecounty = (t2p->tiff_length +
                      tilelength - 1) /
                     tilelength;
        (t2p->tiff_tiles[t2p->pdf_page]).tiles_tilecounty = tilecounty;
        (t2p->tiff_tiles[t2p->pdf_page]).tiles_edgetilewidth =
            t2p->tiff_width % tilewidth;
        (t2p->tiff_tiles[t2p->pdf_page]).tiles_edgetilelength =
            t2p->tiff_length % tilelength;
        tiles = (t2p->tiff_tiles[t2p->pdf_page]).tiles_tiles;
        for (i2 = 0; i2 < tilecounty - 1; i2++) {
            for (i = 0; i < tilecountx - 1; i++) {
                boxp = &(tiles[i2 * tilecountx + i].tile_box);
                boxp->x1 =
                    t2p->pdf_imagebox.x1
                    + ((float)(t2p->pdf_imagewidth * i * tilewidth)
                       / (float)t2p->tiff_width);
                boxp->x2 =
                    t2p->pdf_imagebox.x1
                    + ((float)(t2p->pdf_imagewidth * (i + 1) * tilewidth)
                       / (float)t2p->tiff_width);
                boxp->y1 =
                    t2p->pdf_imagebox.y2
                    - ((float)(t2p->pdf_imagelength * (i2 + 1) * tilelength)
                       / (float)t2p->tiff_length);
                boxp->y2 =
                    t2p->pdf_imagebox.y2
                    - ((float)(t2p->pdf_imagelength * i2 * tilelength)
                       / (float)t2p->tiff_length);
            }
            boxp = &(tiles[i2 * tilecountx + i].tile_box);
            boxp->x1 =
                t2p->pdf_imagebox.x1
                + ((float)(t2p->pdf_imagewidth * i * tilewidth)
                   / (float)t2p->tiff_width);
            boxp->x2 = t2p->pdf_imagebox.x2;
            boxp->y1 =
                t2p->pdf_imagebox.y2
                - ((float)(t2p->pdf_imagelength * (i2 + 1) * tilelength)
                   / (float)t2p->tiff_length);
            boxp->y2 =
                t2p->pdf_imagebox.y2
                - ((float)(t2p->pdf_imagelength * i2 * tilelength)
                   / (float)t2p->tiff_length);
        }
        for (i = 0; i < tilecountx - 1; i++) {
            boxp = &(tiles[i2 * tilecountx + i].tile_box);
            boxp->x1 =
                t2p->pdf_imagebox.x1
                + ((float)(t2p->pdf_imagewidth * i * tilewidth)
                   / (float)t2p->tiff_width);
            boxp->x2 =
                t2p->pdf_imagebox.x1
                + ((float)(t2p->pdf_imagewidth * (i + 1) * tilewidth)
                   / (float)t2p->tiff_width);
            boxp->y1 = t2p->pdf_imagebox.y1;
            boxp->y2 =
                t2p->pdf_imagebox.y2
                - ((float)(t2p->pdf_imagelength * i2 * tilelength)
                   / (float)t2p->tiff_length);
        }
        boxp = &(tiles[i2 * tilecountx + i].tile_box);
        boxp->x1 =
            t2p->pdf_imagebox.x1
            + ((float)(t2p->pdf_imagewidth * i * tilewidth)
               / (float)t2p->tiff_width);
        boxp->x2 = t2p->pdf_imagebox.x2;
        boxp->y1 = t2p->pdf_imagebox.y1;
        boxp->y2 =
            t2p->pdf_imagebox.y2
            - ((float)(t2p->pdf_imagelength * i2 * tilelength)
               / (float)t2p->tiff_length);
    }
    if (t2p->tiff_orientation == 0 || t2p->tiff_orientation == 1) {
        for (i = 0; i < (t2p->tiff_tiles[t2p->pdf_page]).tiles_tilecount; i++) {
            t2p_compose_pdf_page_orient(&(tiles[i].tile_box), 0);
        }
        return;
    }
    for (i = 0; i < (t2p->tiff_tiles[t2p->pdf_page]).tiles_tilecount; i++) {
        boxp = &(tiles[i].tile_box);
        boxp->x1 -= t2p->pdf_imagebox.x1;
        boxp->x2 -= t2p->pdf_imagebox.x1;
        boxp->y1 -= t2p->pdf_imagebox.y1;
        boxp->y2 -= t2p->pdf_imagebox.y1;
        if (t2p->tiff_orientation == 2 || t2p->tiff_orientation == 3) {
            boxp->x1 = t2p->pdf_imagebox.x2 - t2p->pdf_imagebox.x1 - boxp->x1;
            boxp->x2 = t2p->pdf_imagebox.x2 - t2p->pdf_imagebox.x1 - boxp->x2;
        }
        if (t2p->tiff_orientation == 3 || t2p->tiff_orientation == 4) {
            boxp->y1 = t2p->pdf_imagebox.y2 - t2p->pdf_imagebox.y1 - boxp->y1;
            boxp->y2 = t2p->pdf_imagebox.y2 - t2p->pdf_imagebox.y1 - boxp->y2;
        }
        if (t2p->tiff_orientation == 8 || t2p->tiff_orientation == 5) {
            boxp->y1 = t2p->pdf_imagebox.y2 - t2p->pdf_imagebox.y1 - boxp->y1;
            boxp->y2 = t2p->pdf_imagebox.y2 - t2p->pdf_imagebox.y1 - boxp->y2;
        }
        if (t2p->tiff_orientation == 5 || t2p->tiff_orientation == 6) {
            boxp->x1 = t2p->pdf_imagebox.x2 - t2p->pdf_imagebox.x1 - boxp->x1;
            boxp->x2 = t2p->pdf_imagebox.x2 - t2p->pdf_imagebox.x1 - boxp->x2;
        }
        if (t2p->tiff_orientation > 4) {
            f = boxp->x1;
            boxp->x1 = boxp->y1;
            boxp->y1 = f;
            f = boxp->x2;
            boxp->x2 = boxp->y2;
            boxp->y2 = f;
            t2p_compose_pdf_page_orient_flip(boxp, t2p->tiff_orientation);
        } else {
            t2p_compose_pdf_page_orient(boxp, t2p->tiff_orientation);
        }

    }

    return;
}

void t2p_compose_pdf_page_orient(T2P_BOX *boxp, uint16 orientation)
{

    float m1[9];
    float f = 0.0;

    if (boxp->x1 > boxp->x2) {
        f = boxp->x1;
        boxp->x1 = boxp->x2;
        boxp->x2 = f;
    }
    if (boxp->y1 > boxp->y2) {
        f = boxp->y1;
        boxp->y1 = boxp->y2;
        boxp->y2 = f;
    }
    boxp->mat[0] = m1[0] = boxp->x2 - boxp->x1;
    boxp->mat[1] = m1[1] = 0.0;
    boxp->mat[2] = m1[2] = 0.0;
    boxp->mat[3] = m1[3] = 0.0;
    boxp->mat[4] = m1[4] = boxp->y2 - boxp->y1;
    boxp->mat[5] = m1[5] = 0.0;
    boxp->mat[6] = m1[6] = boxp->x1;
    boxp->mat[7] = m1[7] = boxp->y1;
    boxp->mat[8] = m1[8] = 1.0;
    switch (orientation) {
        case 0:
        case 1:
            break;
        case 2:
            boxp->mat[0] = 0.0F - m1[0];
            boxp->mat[6] += m1[0];
            break;
        case 3:
            boxp->mat[0] = 0.0F - m1[0];
            boxp->mat[4] = 0.0F - m1[4];
            boxp->mat[6] += m1[0];
            boxp->mat[7] += m1[4];
            break;
        case 4:
            boxp->mat[4] = 0.0F - m1[4];
            boxp->mat[7] += m1[4];
            break;
        case 5:
            boxp->mat[0] = 0.0F;
            boxp->mat[1] = 0.0F - m1[0];
            boxp->mat[3] = 0.0F - m1[4];
            boxp->mat[4] = 0.0F;
            boxp->mat[6] += m1[4];
            boxp->mat[7] += m1[0];
            break;
        case 6:
            boxp->mat[0] = 0.0F;
            boxp->mat[1] = 0.0F - m1[0];
            boxp->mat[3] = m1[4];
            boxp->mat[4] = 0.0F;
            boxp->mat[7] += m1[0];
            break;
        case 7:
            boxp->mat[0] = 0.0F;
            boxp->mat[1] = m1[0];
            boxp->mat[3] = m1[4];
            boxp->mat[4] = 0.0F;
            break;
        case 8:
            boxp->mat[0] = 0.0F;
            boxp->mat[1] = m1[0];
            boxp->mat[3] = 0.0F - m1[4];
            boxp->mat[4] = 0.0F;
            boxp->mat[6] += m1[4];
            break;
    }

    return;
}

void t2p_compose_pdf_page_orient_flip(T2P_BOX *boxp, uint16 orientation)
{

    float m1[9];
    float f = 0.0;

    if (boxp->x1 > boxp->x2) {
        f = boxp->x1;
        boxp->x1 = boxp->x2;
        boxp->x2 = f;
    }
    if (boxp->y1 > boxp->y2) {
        f = boxp->y1;
        boxp->y1 = boxp->y2;
        boxp->y2 = f;
    }
    boxp->mat[0] = m1[0] = boxp->x2 - boxp->x1;
    boxp->mat[1] = m1[1] = 0.0F;
    boxp->mat[2] = m1[2] = 0.0F;
    boxp->mat[3] = m1[3] = 0.0F;
    boxp->mat[4] = m1[4] = boxp->y2 - boxp->y1;
    boxp->mat[5] = m1[5] = 0.0F;
    boxp->mat[6] = m1[6] = boxp->x1;
    boxp->mat[7] = m1[7] = boxp->y1;
    boxp->mat[8] = m1[8] = 1.0F;
    switch (orientation) {
        case 5:
            boxp->mat[0] = 0.0F;
            boxp->mat[1] = 0.0F - m1[4];
            boxp->mat[3] = 0.0F - m1[0];
            boxp->mat[4] = 0.0F;
            boxp->mat[6] += m1[0];
            boxp->mat[7] += m1[4];
            break;
        case 6:
            boxp->mat[0] = 0.0F;
            boxp->mat[1] = 0.0F - m1[4];
            boxp->mat[3] = m1[0];
            boxp->mat[4] = 0.0F;
            boxp->mat[7] += m1[4];
            break;
        case 7:
            boxp->mat[0] = 0.0F;
            boxp->mat[1] = m1[4];
            boxp->mat[3] = m1[0];
            boxp->mat[4] = 0.0F;
            break;
        case 8:
            boxp->mat[0] = 0.0F;
            boxp->mat[1] = m1[4];
            boxp->mat[3] = 0.0F - m1[0];
            boxp->mat[4] = 0.0F;
            boxp->mat[6] += m1[0];
            break;
    }

    return;
}

/*
    This function writes a PDF Contents stream to output.
*/

tsize_t t2p_write_pdf_page_content_stream(T2P *t2p, TIFF *output)
{

    tsize_t written = 0;
    ttile_t i = 0;
    char buffer[512];
    int buflen = 0;
    T2P_BOX box;

    if (t2p->tiff_tiles[t2p->pdf_page].tiles_tilecount > 0) {
        for (i = 0; i < t2p->tiff_tiles[t2p->pdf_page].tiles_tilecount; i++) {
            box = t2p->tiff_tiles[t2p->pdf_page].tiles_tiles[i].tile_box;
            buflen = sprintf(buffer,
                             "q %s %.4f %.4f %.4f %.4f %.4f %.4f cm /Im%d_%ld Do Q\n",
                             t2p->tiff_transferfunctioncount ? "/GS1 gs " : "",
                             box.mat[0],
                             box.mat[1],
                             box.mat[3],
                             box.mat[4],
                             box.mat[6],
                             box.mat[7],
                             t2p->pdf_page + 1,
                             (long)(i + 1));
            written += t2p_write_pdf_stream(buffer, buflen, output);
        }
    } else {
        box = t2p->pdf_imagebox;
        buflen = sprintf(buffer,
                         "q %s %.4f %.4f %.4f %.4f %.4f %.4f cm /Im%d Do Q\n",
                         t2p->tiff_transferfunctioncount ? "/GS1 gs " : "",
                         box.mat[0],
                         box.mat[1],
                         box.mat[3],
                         box.mat[4],
                         box.mat[6],
                         box.mat[7],
                         t2p->pdf_page + 1);
        written += t2p_write_pdf_stream(buffer, buflen, output);
    }

    return (written);
}

/*
    This function writes a PDF Image XObject stream dictionary to output.
*/

tsize_t t2p_write_pdf_xobject_stream_dict(ttile_t tile,
        T2P *t2p,
        TIFF *output)
{

    tsize_t written = 0;
    char buffer[16];
    int buflen = 0;

    written += t2p_write_pdf_stream_dict(0, t2p->pdf_xrefcount + 1, output);
    written += t2pWriteFile(output,
                            (tdata_t) "/Type /XObject \n/Subtype /Image \n/Name /Im",
                            42);
    buflen = sprintf(buffer, "%u", t2p->pdf_page + 1);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    if (tile != 0) {
        written += t2pWriteFile(output, (tdata_t) "_", 1);
        buflen = sprintf(buffer, "%lu", (unsigned long)tile);
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    }
    written += t2pWriteFile(output, (tdata_t) "\n/Width ", 8);
    _TIFFmemset((tdata_t)buffer, 0x00, 16);
    if (tile == 0) {
        buflen = sprintf(buffer, "%lu", (unsigned long)t2p->tiff_width);
    } else {
        if (t2p_tile_is_right_edge(t2p->tiff_tiles[t2p->pdf_page], tile - 1) != 0) {
            buflen = sprintf(
                         buffer,
                         "%lu",
                         (unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilewidth);
        } else {
            buflen = sprintf(
                         buffer,
                         "%lu",
                         (unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_tilewidth);
        }
    }
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) "\n/Height ", 9);
    _TIFFmemset((tdata_t)buffer, 0x00, 16);
    if (tile == 0) {
        buflen = sprintf(buffer, "%lu", (unsigned long)t2p->tiff_length);
    } else {
        if (t2p_tile_is_bottom_edge(t2p->tiff_tiles[t2p->pdf_page], tile - 1) != 0) {
            buflen = sprintf(
                         buffer,
                         "%lu",
                         (unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilelength);
        } else {
            buflen = sprintf(
                         buffer,
                         "%lu",
                         (unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_tilelength);
        }
    }
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) "\n/BitsPerComponent ", 19);
    _TIFFmemset((tdata_t)buffer, 0x00, 16);
    buflen = sprintf(buffer, "%u", t2p->tiff_bitspersample);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) "\n/ColorSpace ", 13);
    written += t2p_write_pdf_xobject_cs(t2p, output);
    if (t2p->pdf_image_interpolate)
        written += t2pWriteFile(output,
                                (tdata_t) "\n/Interpolate true", 18);
    if ((t2p->pdf_switchdecode != 0)
#ifdef CCITT_SUPPORT
        && !(t2p->pdf_colorspace == T2P_CS_BILEVEL
             && t2p->pdf_compression == T2P_COMPRESS_G4)
#endif
       ) {
        written += t2p_write_pdf_xobject_decode(t2p, output);
    }
    written += t2p_write_pdf_xobject_stream_filter(tile, t2p, output);

    return (written);
}

/*
 * 	This function writes a PDF Image XObject Colorspace name to output.
 */


tsize_t t2p_write_pdf_xobject_cs(T2P *t2p, TIFF *output)
{

    tsize_t written = 0;
    char buffer[128];
    int buflen = 0;

    float X_W = 1.0;
    float Y_W = 1.0;
    float Z_W = 1.0;

    if ((t2p->pdf_colorspace & T2P_CS_ICCBASED) != 0) {
        written += t2p_write_pdf_xobject_icccs(t2p, output);
        return (written);
    }
    if ((t2p->pdf_colorspace & T2P_CS_PALETTE) != 0) {
        written += t2pWriteFile(output, (tdata_t) "[ /Indexed ", 11);
        t2p->pdf_colorspace ^= T2P_CS_PALETTE;
        written += t2p_write_pdf_xobject_cs(t2p, output);
        t2p->pdf_colorspace |= T2P_CS_PALETTE;
        buflen = sprintf(buffer, "%u", (0x0001 << t2p->tiff_bitspersample) - 1);
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) " ", 1);
        _TIFFmemset(buffer, 0x00, 16);
        buflen = sprintf(buffer, "%lu", (unsigned long)t2p->pdf_palettecs);
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) " 0 R ]\n", 7);
        return (written);
    }
    if (t2p->pdf_colorspace & T2P_CS_BILEVEL) {
        written += t2pWriteFile(output, (tdata_t) "/DeviceGray \n", 13);
    }
    if (t2p->pdf_colorspace & T2P_CS_GRAY) {
        if (t2p->pdf_colorspace & T2P_CS_CALGRAY) {
            written += t2p_write_pdf_xobject_calcs(t2p, output);
        } else {
            written += t2pWriteFile(output, (tdata_t) "/DeviceGray \n", 13);
        }
    }
    if (t2p->pdf_colorspace & T2P_CS_RGB) {
        if (t2p->pdf_colorspace & T2P_CS_CALRGB) {
            written += t2p_write_pdf_xobject_calcs(t2p, output);
        } else {
            written += t2pWriteFile(output, (tdata_t) "/DeviceRGB \n", 12);
        }
    }
    if (t2p->pdf_colorspace & T2P_CS_CMYK) {
        written += t2pWriteFile(output, (tdata_t) "/DeviceCMYK \n", 13);
    }
    if (t2p->pdf_colorspace & T2P_CS_LAB) {
        written += t2pWriteFile(output, (tdata_t) "[/Lab << \n", 10);
        written += t2pWriteFile(output, (tdata_t) "/WhitePoint ", 12);
        X_W = t2p->tiff_whitechromaticities[0];
        Y_W = t2p->tiff_whitechromaticities[1];
        Z_W = 1.0F - (X_W + Y_W);
        X_W /= Y_W;
        Z_W /= Y_W;
        Y_W = 1.0F;
        buflen = sprintf(buffer, "[%.4f %.4f %.4f] \n", X_W, Y_W, Z_W);
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) "/Range ", 7);
        buflen = sprintf(buffer, "[%d %d %d %d] \n",
                         t2p->pdf_labrange[0],
                         t2p->pdf_labrange[1],
                         t2p->pdf_labrange[2],
                         t2p->pdf_labrange[3]);
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) ">>] \n", 5);

    }

    return (written);
}

tsize_t t2p_write_pdf_transfer(T2P *t2p, TIFF *output)
{

    tsize_t written = 0;
    char buffer[16];
    int buflen = 0;

    written += t2pWriteFile(output, (tdata_t) "<< /Type /ExtGState \n/TR ", 25);
    if (t2p->tiff_transferfunctioncount == 1) {
        buflen = sprintf(buffer, "%lu",
                         (unsigned long)(t2p->pdf_xrefcount + 1));
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
    } else {
        written += t2pWriteFile(output, (tdata_t) "[ ", 2);
        buflen = sprintf(buffer, "%lu",
                         (unsigned long)(t2p->pdf_xrefcount + 1));
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
        buflen = sprintf(buffer, "%lu",
                         (unsigned long)(t2p->pdf_xrefcount + 2));
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
        buflen = sprintf(buffer, "%lu",
                         (unsigned long)(t2p->pdf_xrefcount + 3));
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
        written += t2pWriteFile(output, (tdata_t) "/Identity ] ", 12);
    }

    written += t2pWriteFile(output, (tdata_t) " >> \n", 5);

    return (written);
}

tsize_t t2p_write_pdf_transfer_dict(T2P *t2p, TIFF *output, uint16 i)
{

    tsize_t written = 0;
    char buffer[32];
    int buflen = 0;
    (void)i; /* XXX */

    written += t2pWriteFile(output, (tdata_t) "/FunctionType 0 \n", 17);
    written += t2pWriteFile(output, (tdata_t) "/Domain [0.0 1.0] \n", 19);
    written += t2pWriteFile(output, (tdata_t) "/Range [0.0 1.0] \n", 18);
    buflen = sprintf(buffer, "/Size [%u] \n", (1 << t2p->tiff_bitspersample));
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) "/BitsPerSample 16 \n", 19);
    written += t2p_write_pdf_stream_dict(((tsize_t)1) << (t2p->tiff_bitspersample + 1), 0, output);

    return (written);
}

tsize_t t2p_write_pdf_transfer_stream(T2P *t2p, TIFF *output, uint16 i)
{

    tsize_t written = 0;

    written += t2p_write_pdf_stream(
                   t2p->tiff_transferfunction[i],
                   (((tsize_t)1) << (t2p->tiff_bitspersample + 1)),
                   output);

    return (written);
}

/*
    This function writes a PDF Image XObject Colorspace array to output.
*/

tsize_t t2p_write_pdf_xobject_calcs(T2P *t2p, TIFF *output)
{

    tsize_t written = 0;
    char buffer[128];
    int buflen = 0;

    float X_W = 0.0;
    float Y_W = 0.0;
    float Z_W = 0.0;
    float X_R = 0.0;
    float Y_R = 0.0;
    float Z_R = 0.0;
    float X_G = 0.0;
    float Y_G = 0.0;
    float Z_G = 0.0;
    float X_B = 0.0;
    float Y_B = 0.0;
    float Z_B = 0.0;
    float x_w = 0.0;
    float y_w = 0.0;
    float z_w = 0.0;
    float x_r = 0.0;
    float y_r = 0.0;
    float x_g = 0.0;
    float y_g = 0.0;
    float x_b = 0.0;
    float y_b = 0.0;
    float R = 1.0;
    float G = 1.0;
    float B = 1.0;

    written += t2pWriteFile(output, (tdata_t) "[", 1);
    if (t2p->pdf_colorspace & T2P_CS_CALGRAY) {
        written += t2pWriteFile(output, (tdata_t) "/CalGray ", 9);
        X_W = t2p->tiff_whitechromaticities[0];
        Y_W = t2p->tiff_whitechromaticities[1];
        Z_W = 1.0F - (X_W + Y_W);
        X_W /= Y_W;
        Z_W /= Y_W;
        Y_W = 1.0F;
    }
    if (t2p->pdf_colorspace & T2P_CS_CALRGB) {
        written += t2pWriteFile(output, (tdata_t) "/CalRGB ", 8);
        x_w = t2p->tiff_whitechromaticities[0];
        y_w = t2p->tiff_whitechromaticities[1];
        x_r = t2p->tiff_primarychromaticities[0];
        y_r = t2p->tiff_primarychromaticities[1];
        x_g = t2p->tiff_primarychromaticities[2];
        y_g = t2p->tiff_primarychromaticities[3];
        x_b = t2p->tiff_primarychromaticities[4];
        y_b = t2p->tiff_primarychromaticities[5];
        z_w = y_w * ((x_g - x_b) * y_r - (x_r - x_b) * y_g + (x_r - x_g) * y_b);
        Y_R = (y_r / R) * ((x_g - x_b) * y_w - (x_w - x_b) * y_g + (x_w - x_g) * y_b) / z_w;
        X_R = Y_R * x_r / y_r;
        Z_R = Y_R * (((1 - x_r) / y_r) - 1);
        Y_G = ((0.0F - (y_g)) / G) * ((x_r - x_b) * y_w - (x_w - x_b) * y_r + (x_w - x_r) * y_b) / z_w;
        X_G = Y_G * x_g / y_g;
        Z_G = Y_G * (((1 - x_g) / y_g) - 1);
        Y_B = (y_b / B) * ((x_r - x_g) * y_w - (x_w - x_g) * y_r + (x_w - x_r) * y_g) / z_w;
        X_B = Y_B * x_b / y_b;
        Z_B = Y_B * (((1 - x_b) / y_b) - 1);
        X_W = (X_R * R) + (X_G * G) + (X_B * B);
        Y_W = (Y_R * R) + (Y_G * G) + (Y_B * B);
        Z_W = (Z_R * R) + (Z_G * G) + (Z_B * B);
        X_W /= Y_W;
        Z_W /= Y_W;
        Y_W = 1.0;
    }
    written += t2pWriteFile(output, (tdata_t) "<< \n", 4);
    if (t2p->pdf_colorspace & T2P_CS_CALGRAY) {
        written += t2pWriteFile(output, (tdata_t) "/WhitePoint ", 12);
        buflen = sprintf(buffer, "[%.4f %.4f %.4f] \n", X_W, Y_W, Z_W);
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) "/Gamma 2.2 \n", 12);
    }
    if (t2p->pdf_colorspace & T2P_CS_CALRGB) {
        written += t2pWriteFile(output, (tdata_t) "/WhitePoint ", 12);
        buflen = sprintf(buffer, "[%.4f %.4f %.4f] \n", X_W, Y_W, Z_W);
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) "/Matrix ", 8);
        buflen = sprintf(buffer, "[%.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f] \n",
                         X_R, Y_R, Z_R,
                         X_G, Y_G, Z_G,
                         X_B, Y_B, Z_B);
        written += t2pWriteFile(output, (tdata_t) buffer, buflen);
        written += t2pWriteFile(output, (tdata_t) "/Gamma [2.2 2.2 2.2] \n", 22);
    }
    written += t2pWriteFile(output, (tdata_t) ">>] \n", 5);

    return (written);
}

/*
    This function writes a PDF Image XObject Colorspace array to output.
*/

tsize_t t2p_write_pdf_xobject_icccs(T2P *t2p, TIFF *output)
{

    tsize_t written = 0;
    char buffer[16];
    int buflen = 0;

    written += t2pWriteFile(output, (tdata_t) "[/ICCBased ", 11);
    buflen = sprintf(buffer, "%lu", (unsigned long)t2p->pdf_icccs);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) " 0 R] \n", 7);

    return (written);
}

tsize_t t2p_write_pdf_xobject_icccs_dict(T2P *t2p, TIFF *output)
{

    tsize_t written = 0;
    char buffer[16];
    int buflen = 0;

    written += t2pWriteFile(output, (tdata_t) "/N ", 3);
    buflen = sprintf(buffer, "%u \n", t2p->tiff_samplesperpixel);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) "/Alternate ", 11);
    t2p->pdf_colorspace ^= T2P_CS_ICCBASED;
    written += t2p_write_pdf_xobject_cs(t2p, output);
    t2p->pdf_colorspace |= T2P_CS_ICCBASED;
    written += t2p_write_pdf_stream_dict(t2p->tiff_iccprofilelength, 0, output);

    return (written);
}

tsize_t t2p_write_pdf_xobject_icccs_stream(T2P *t2p, TIFF *output)
{

    tsize_t written = 0;

    written += t2p_write_pdf_stream(
                   (tdata_t) t2p->tiff_iccprofile,
                   (tsize_t) t2p->tiff_iccprofilelength,
                   output);

    return (written);
}

/*
    This function writes a palette stream for an indexed color space to output.
*/

tsize_t t2p_write_pdf_xobject_palettecs_stream(T2P *t2p, TIFF *output)
{

    tsize_t written = 0;

    written += t2p_write_pdf_stream(
                   (tdata_t) t2p->pdf_palette,
                   (tsize_t) t2p->pdf_palettesize,
                   output);

    return (written);
}

/*
    This function writes a PDF Image XObject Decode array to output.
*/

tsize_t t2p_write_pdf_xobject_decode(T2P *t2p, TIFF *output)
{

    tsize_t written = 0;
    int i = 0;

    written += t2pWriteFile(output, (tdata_t) "/Decode [ ", 10);
    for (i = 0; i < t2p->tiff_samplesperpixel; i++) {
        written += t2pWriteFile(output, (tdata_t) "1 0 ", 4);
    }
    written += t2pWriteFile(output, (tdata_t) "]\n", 2);

    return (written);
}

/*
    This function writes a PDF Image XObject stream filter name and parameters to
    output.
*/

tsize_t t2p_write_pdf_xobject_stream_filter(ttile_t tile, T2P *t2p, TIFF *output)
{

    tsize_t written = 0;
    char buffer[16];
    int buflen = 0;

    if (t2p->pdf_compression == T2P_COMPRESS_NONE) {
        return (written);
    }
    written += t2pWriteFile(output, (tdata_t) "/Filter ", 8);
    switch (t2p->pdf_compression) {
#ifdef CCITT_SUPPORT
        case T2P_COMPRESS_G4:
            written += t2pWriteFile(output, (tdata_t) "/CCITTFaxDecode ", 16);
            written += t2pWriteFile(output, (tdata_t) "/DecodeParms ", 13);
            written += t2pWriteFile(output, (tdata_t) "<< /K -1 ", 9);
            if (tile == 0) {
                written += t2pWriteFile(output, (tdata_t) "/Columns ", 9);
                buflen = sprintf(buffer, "%lu",
                                 (unsigned long)t2p->tiff_width);
                written += t2pWriteFile(output, (tdata_t) buffer, buflen);
                written += t2pWriteFile(output, (tdata_t) " /Rows ", 7);
                buflen = sprintf(buffer, "%lu",
                                 (unsigned long)t2p->tiff_length);
                written += t2pWriteFile(output, (tdata_t) buffer, buflen);
            } else {
                if (t2p_tile_is_right_edge(t2p->tiff_tiles[t2p->pdf_page], tile - 1) == 0) {
                    written += t2pWriteFile(output, (tdata_t) "/Columns ", 9);
                    buflen = sprintf(
                                 buffer,
                                 "%lu",
                                 (unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_tilewidth);
                    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
                } else {
                    written += t2pWriteFile(output, (tdata_t) "/Columns ", 9);
                    buflen = sprintf(
                                 buffer,
                                 "%lu",
                                 (unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilewidth);
                    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
                }
                if (t2p_tile_is_bottom_edge(t2p->tiff_tiles[t2p->pdf_page], tile - 1) == 0) {
                    written += t2pWriteFile(output, (tdata_t) " /Rows ", 7);
                    buflen = sprintf(
                                 buffer,
                                 "%lu",
                                 (unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_tilelength);
                    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
                } else {
                    written += t2pWriteFile(output, (tdata_t) " /Rows ", 7);
                    buflen = sprintf(
                                 buffer,
                                 "%lu",
                                 (unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilelength);
                    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
                }
            }
            if (t2p->pdf_switchdecode == 0) {
                written += t2pWriteFile(output, (tdata_t) " /BlackIs1 true ", 16);
            }
            written += t2pWriteFile(output, (tdata_t) ">>\n", 3);
            break;
#endif
#ifdef JPEG_SUPPORT
        case T2P_COMPRESS_JPEG:
            written += t2pWriteFile(output, (tdata_t) "/DCTDecode ", 11);

            if (t2p->tiff_photometric != PHOTOMETRIC_YCBCR) {
                written += t2pWriteFile(output, (tdata_t) "/DecodeParms ", 13);
                written += t2pWriteFile(output, (tdata_t) "<< /ColorTransform 0 >>\n", 24);
            }
            break;
#endif
#ifdef ZIP_SUPPORT
        case T2P_COMPRESS_ZIP:
            written += t2pWriteFile(output, (tdata_t) "/FlateDecode ", 13);
            if (t2p->pdf_compressionquality % 100) {
                written += t2pWriteFile(output, (tdata_t) "/DecodeParms ", 13);
                written += t2pWriteFile(output, (tdata_t) "<< /Predictor ", 14);
                _TIFFmemset(buffer, 0x00, 16);
                buflen = sprintf(buffer, "%u", t2p->pdf_compressionquality % 100);
                written += t2pWriteFile(output, (tdata_t) buffer, buflen);
                written += t2pWriteFile(output, (tdata_t) " /Columns ", 10);
                _TIFFmemset(buffer, 0x00, 16);
                buflen = sprintf(buffer, "%lu",
                                 (unsigned long)t2p->tiff_width);
                written += t2pWriteFile(output, (tdata_t) buffer, buflen);
                written += t2pWriteFile(output, (tdata_t) " /Colors ", 9);
                _TIFFmemset(buffer, 0x00, 16);
                buflen = sprintf(buffer, "%u", t2p->tiff_samplesperpixel);
                written += t2pWriteFile(output, (tdata_t) buffer, buflen);
                written += t2pWriteFile(output, (tdata_t) " /BitsPerComponent ", 19);
                _TIFFmemset(buffer, 0x00, 16);
                buflen = sprintf(buffer, "%u", t2p->tiff_bitspersample);
                written += t2pWriteFile(output, (tdata_t) buffer, buflen);
                written += t2pWriteFile(output, (tdata_t) ">>\n", 3);
            }
            break;
#endif
        default:
            break;
    }

    return (written);
}

/*
    This function writes a PDF xref table to output.
*/

tsize_t t2p_write_pdf_xreftable(T2P *t2p, TIFF *output)
{

    tsize_t written = 0;
    char buffer[21];
    int buflen = 0;
    uint32 i = 0;

    written += t2pWriteFile(output, (tdata_t) "xref\n0 ", 7);
    buflen = sprintf(buffer, "%lu", (unsigned long)(t2p->pdf_xrefcount + 1));
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    written += t2pWriteFile(output, (tdata_t) " \n0000000000 65535 f \n", 22);
    for (i = 0; i < t2p->pdf_xrefcount; i++) {
        sprintf(buffer, "%.10lu 00000 n \n",
                (unsigned long)t2p->pdf_xrefoffsets[i]);
        written += t2pWriteFile(output, (tdata_t) buffer, 20);
    }

    return (written);
}

/*
 * This function writes a PDF trailer to output.
 */

tsize_t t2p_write_pdf_trailer(T2P *t2p, TIFF *output)
{

    tsize_t written = 0;
    char buffer[32];
    int buflen = 0;
    size_t i = 0;

    for (i = 0; i < sizeof(t2p->pdf_fileid) - 8; i += 8) {
        snprintf(t2p->pdf_fileid + i, 9, "%.8X", rand());
    }

    written += t2pWriteFile(output, (tdata_t) "trailer\n<<\n/Size ", 17);
    buflen = sprintf(buffer, "%lu", (unsigned long)(t2p->pdf_xrefcount + 1));
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    _TIFFmemset(buffer, 0x00, 32);
    written += t2pWriteFile(output, (tdata_t) "\n/Root ", 7);
    buflen = sprintf(buffer, "%lu", (unsigned long)t2p->pdf_catalog);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    _TIFFmemset(buffer, 0x00, 32);
    written += t2pWriteFile(output, (tdata_t) " 0 R \n/Info ", 12);
    buflen = sprintf(buffer, "%lu", (unsigned long)t2p->pdf_info);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    _TIFFmemset(buffer, 0x00, 32);
    written += t2pWriteFile(output, (tdata_t) " 0 R \n/ID[<", 11);
    written += t2pWriteFile(output, (tdata_t) t2p->pdf_fileid,
                            sizeof(t2p->pdf_fileid) - 1);
    written += t2pWriteFile(output, (tdata_t) "><", 2);
    written += t2pWriteFile(output, (tdata_t) t2p->pdf_fileid,
                            sizeof(t2p->pdf_fileid) - 1);
    written += t2pWriteFile(output, (tdata_t) ">]\n>>\nstartxref\n", 16);
    buflen = sprintf(buffer, "%lu", (unsigned long)t2p->pdf_startxref);
    written += t2pWriteFile(output, (tdata_t) buffer, buflen);
    _TIFFmemset(buffer, 0x00, 32);
    written += t2pWriteFile(output, (tdata_t) "\n%%EOF\n", 7);

    return (written);
}

/*

  This function writes a PDF to a file given a pointer to a TIFF.

  The idea with using a TIFF* as output for a PDF file is that the file
  can be created with TIFFClientOpen for memory-mapped use within the TIFF
  library, and TIFFWriteEncodedStrip can be used to write compressed data to
  the output.  The output is not actually a TIFF file, it is a PDF file.

  This function uses only t2pWriteFile and TIFFWriteEncodedStrip to write to
  the output TIFF file.  When libtiff would otherwise be writing data to the
  output file, the write procedure of the TIFF structure is replaced with an
  empty implementation.

  The first argument to the function is an initialized and validated T2P
  context struct pointer.

  The second argument to the function is the TIFF* that is the input that has
  been opened for reading and no other functions have been called upon it.

  The third argument to the function is the TIFF* that is the output that has
  been opened for writing.  It has to be opened so that it hasn't written any
  data to the output.  If the output is seekable then it's OK to seek to the
  beginning of the file.  The function only writes to the output PDF and does
  not seek.  See the example usage in the main() function.

    TIFF* output = TIFFOpen("output.pdf", "w");
    assert(output != nullptr);

    if(output->tif_seekproc != nullptr){
        t2pSeekFile(output, (toff_t) 0, SEEK_SET);
    }

  This function returns the file size of the output PDF file.  On error it
  returns zero and the t2p->t2p_error variable is set to T2P_ERR_ERROR.

  After this function completes, call t2p_free on t2p, TIFFClose on input,
  and TIFFClose on output.
*/

tsize_t t2p_write_pdf(T2P *t2p, TIFF *input, TIFF *output)
{

    tsize_t written = 0;
    ttile_t i2 = 0;
    tsize_t streamlen = 0;
    uint16 i = 0;

    t2p_read_tiff_init(t2p, input);
    if (t2p->t2p_error != T2P_ERR_OK) {
        return (0);
    }
    t2p->pdf_xrefoffsets = (uint32 *) _TIFFmalloc(t2p->pdf_xrefcount * sizeof(uint32));
    if (t2p->pdf_xrefoffsets == nullptr) {
        TIFFError(
            TIFF2PDF_MODULE,
            "Can't allocate %u bytes of memory for t2p_write_pdf",
            (unsigned int)(t2p->pdf_xrefcount * sizeof(uint32)));
        t2p->t2p_error = T2P_ERR_ERROR;
        return (written);
    }
    t2p->pdf_xrefcount = 0;
    t2p->pdf_catalog = 1;
    t2p->pdf_info = 2;
    t2p->pdf_pages = 3;
    written += t2p_write_pdf_header(t2p, output);
    t2p->pdf_xrefoffsets[t2p->pdf_xrefcount++] = written;
    t2p->pdf_catalog = t2p->pdf_xrefcount;
    written += t2p_write_pdf_obj_start(t2p->pdf_xrefcount, output);
    written += t2p_write_pdf_catalog(t2p, output);
    written += t2p_write_pdf_obj_end(output);
    t2p->pdf_xrefoffsets[t2p->pdf_xrefcount++] = written;
    t2p->pdf_info = t2p->pdf_xrefcount;
    written += t2p_write_pdf_obj_start(t2p->pdf_xrefcount, output);
    written += t2p_write_pdf_info(t2p, input, output);
    written += t2p_write_pdf_obj_end(output);
    t2p->pdf_xrefoffsets[t2p->pdf_xrefcount++] = written;
    t2p->pdf_pages = t2p->pdf_xrefcount;
    written += t2p_write_pdf_obj_start(t2p->pdf_xrefcount, output);
    written += t2p_write_pdf_pages(t2p, output);
    written += t2p_write_pdf_obj_end(output);
    for (t2p->pdf_page = 0; t2p->pdf_page < t2p->tiff_pagecount; t2p->pdf_page++) {
        t2p_read_tiff_data(t2p, input);
        if (t2p->t2p_error != T2P_ERR_OK) {
            return (0);
        }
        t2p->pdf_xrefoffsets[t2p->pdf_xrefcount++] = written;
        written += t2p_write_pdf_obj_start(t2p->pdf_xrefcount, output);
        written += t2p_write_pdf_page(t2p->pdf_xrefcount, t2p, output);
        written += t2p_write_pdf_obj_end(output);
        t2p->pdf_xrefoffsets[t2p->pdf_xrefcount++] = written;
        written += t2p_write_pdf_obj_start(t2p->pdf_xrefcount, output);
        written += t2p_write_pdf_stream_dict_start(output);
        written += t2p_write_pdf_stream_dict(0, t2p->pdf_xrefcount + 1, output);
        written += t2p_write_pdf_stream_dict_end(output);
        written += t2p_write_pdf_stream_start(output);
        streamlen = written;
        written += t2p_write_pdf_page_content_stream(t2p, output);
        streamlen = written - streamlen;
        written += t2p_write_pdf_stream_end(output);
        written += t2p_write_pdf_obj_end(output);
        t2p->pdf_xrefoffsets[t2p->pdf_xrefcount++] = written;
        written += t2p_write_pdf_obj_start(t2p->pdf_xrefcount, output);
        written += t2p_write_pdf_stream_length(streamlen, output);
        written += t2p_write_pdf_obj_end(output);
        if (t2p->tiff_transferfunctioncount != 0) {
            t2p->pdf_xrefoffsets[t2p->pdf_xrefcount++] = written;
            written += t2p_write_pdf_obj_start(t2p->pdf_xrefcount, output);
            written += t2p_write_pdf_transfer(t2p, output);
            written += t2p_write_pdf_obj_end(output);
            for (i = 0; i < t2p->tiff_transferfunctioncount; i++) {
                t2p->pdf_xrefoffsets[t2p->pdf_xrefcount++] = written;
                written += t2p_write_pdf_obj_start(t2p->pdf_xrefcount, output);
                written += t2p_write_pdf_stream_dict_start(output);
                written += t2p_write_pdf_transfer_dict(t2p, output, i);
                written += t2p_write_pdf_stream_dict_end(output);
                written += t2p_write_pdf_stream_start(output);
                streamlen = written;
                written += t2p_write_pdf_transfer_stream(t2p, output, i);
                streamlen = written - streamlen;
                written += t2p_write_pdf_stream_end(output);
                written += t2p_write_pdf_obj_end(output);
            }
        }
        if ((t2p->pdf_colorspace & T2P_CS_PALETTE) != 0) {
            t2p->pdf_xrefoffsets[t2p->pdf_xrefcount++] = written;
            t2p->pdf_palettecs = t2p->pdf_xrefcount;
            written += t2p_write_pdf_obj_start(t2p->pdf_xrefcount, output);
            written += t2p_write_pdf_stream_dict_start(output);
            written += t2p_write_pdf_stream_dict(t2p->pdf_palettesize, 0, output);
            written += t2p_write_pdf_stream_dict_end(output);
            written += t2p_write_pdf_stream_start(output);
            streamlen = written;
            written += t2p_write_pdf_xobject_palettecs_stream(t2p, output);
            streamlen = written - streamlen;
            written += t2p_write_pdf_stream_end(output);
            written += t2p_write_pdf_obj_end(output);
        }
        if ((t2p->pdf_colorspace & T2P_CS_ICCBASED) != 0) {
            t2p->pdf_xrefoffsets[t2p->pdf_xrefcount++] = written;
            t2p->pdf_icccs = t2p->pdf_xrefcount;
            written += t2p_write_pdf_obj_start(t2p->pdf_xrefcount, output);
            written += t2p_write_pdf_stream_dict_start(output);
            written += t2p_write_pdf_xobject_icccs_dict(t2p, output);
            written += t2p_write_pdf_stream_dict_end(output);
            written += t2p_write_pdf_stream_start(output);
            streamlen = written;
            written += t2p_write_pdf_xobject_icccs_stream(t2p, output);
            streamlen = written - streamlen;
            written += t2p_write_pdf_stream_end(output);
            written += t2p_write_pdf_obj_end(output);
        }
        if (t2p->tiff_tiles[t2p->pdf_page].tiles_tilecount != 0) {
            for (i2 = 0; i2 < t2p->tiff_tiles[t2p->pdf_page].tiles_tilecount; i2++) {
                t2p->pdf_xrefoffsets[t2p->pdf_xrefcount++] = written;
                written += t2p_write_pdf_obj_start(t2p->pdf_xrefcount, output);
                written += t2p_write_pdf_stream_dict_start(output);
                written += t2p_write_pdf_xobject_stream_dict(
                               i2 + 1,
                               t2p,
                               output);
                written += t2p_write_pdf_stream_dict_end(output);
                written += t2p_write_pdf_stream_start(output);
                streamlen = written;
                t2p_read_tiff_size_tile(t2p, input, i2);
                written += t2p_readwrite_pdf_image_tile(t2p, input, output, i2);
                t2p_write_advance_directory(t2p, output);
                if (t2p->t2p_error != T2P_ERR_OK) {
                    return (0);
                }
                streamlen = written - streamlen;
                written += t2p_write_pdf_stream_end(output);
                written += t2p_write_pdf_obj_end(output);
                t2p->pdf_xrefoffsets[t2p->pdf_xrefcount++] = written;
                written += t2p_write_pdf_obj_start(t2p->pdf_xrefcount, output);
                written += t2p_write_pdf_stream_length(streamlen, output);
                written += t2p_write_pdf_obj_end(output);
            }
        } else {
            t2p->pdf_xrefoffsets[t2p->pdf_xrefcount++] = written;
            written += t2p_write_pdf_obj_start(t2p->pdf_xrefcount, output);
            written += t2p_write_pdf_stream_dict_start(output);
            written += t2p_write_pdf_xobject_stream_dict(
                           0,
                           t2p,
                           output);
            written += t2p_write_pdf_stream_dict_end(output);
            written += t2p_write_pdf_stream_start(output);
            streamlen = written;
            t2p_read_tiff_size(t2p, input);
            written += t2p_readwrite_pdf_image(t2p, input, output);
            t2p_write_advance_directory(t2p, output);
            if (t2p->t2p_error != T2P_ERR_OK) {
                return (0);
            }
            streamlen = written - streamlen;
            written += t2p_write_pdf_stream_end(output);
            written += t2p_write_pdf_obj_end(output);
            t2p->pdf_xrefoffsets[t2p->pdf_xrefcount++] = written;
            written += t2p_write_pdf_obj_start(t2p->pdf_xrefcount, output);
            written += t2p_write_pdf_stream_length(streamlen, output);
            written += t2p_write_pdf_obj_end(output);
        }
    }
    t2p->pdf_startxref = written;
    written += t2p_write_pdf_xreftable(t2p, output);
    written += t2p_write_pdf_trailer(t2p, output);
    t2p_disable(output);

    return (written);
}

LAUTiff2PdfObject::LAUTiff2PdfObject(QString inputFileString, QString outputFileString, QObject *parent) : QObject(parent)
{
    T2P *t2p = t2p_init();
    if (t2p) {
        TIFF *input = TIFFOpen(inputFileString.toLatin1(), "r");
        if (input) {
            t2p->outputdisable = 0;
            t2p->outputfile = fopen(outputFileString.toLatin1(), "wb");
            if (t2p->outputfile == nullptr) {
                return;
            }

            TIFF *output = TIFFClientOpen(outputFileString.toLatin1(), "w", (thandle_t) t2p, t2p_readproc, t2p_writeproc, t2p_seekproc, t2p_closeproc, t2p_sizeproc, t2p_mapproc, t2p_unmapproc);
            if (output) {
                t2p_validate(t2p);
                t2pSeekFile(output, (toff_t) 0, SEEK_SET);
                t2p_write_pdf(t2p, input, output);
                if (t2p->t2p_error) {
                    ;
                }
                TIFFClose(output);
            }
            TIFFClose(input);
        }
        t2p_free(t2p);
    }
}