opencv

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/*
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 * Copyright (c) 1988-1997 Sam Leffler
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 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
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 *
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 * Permission to use, copy, modify, distribute, and sell this software and
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 * its documentation for any purpose is hereby granted without fee, provided
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 * that (i) the above copyright notices and this permission notice appear in
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 * all copies of the software and related documentation, and (ii) the names of
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 * Sam Leffler and Silicon Graphics may not be used in any advertising or
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 * publicity relating to the software without the specific, prior written
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 * permission of Sam Leffler and Silicon Graphics.
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 *
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 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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 *
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 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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 * OF THIS SOFTWARE.
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 */
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/*
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 * TIFF Library.
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 *
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 * "Null" Compression Algorithm Support.
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 */
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#include "tiffiop.h"
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static int DumpFixupTags(TIFF *tif)
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{
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    (void)tif;
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    return (1);
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}
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/*
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 * Encode a hunk of pixels.
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 */
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static int DumpModeEncode(TIFF *tif, uint8_t *pp, tmsize_t cc, uint16_t s)
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{
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    (void)s;
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    while (cc > 0)
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    {
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        tmsize_t n;
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        n = cc;
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        if (tif->tif_rawcc + n > tif->tif_rawdatasize)
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            n = tif->tif_rawdatasize - tif->tif_rawcc;
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        assert(n > 0);
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        /*
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         * Avoid copy if client has setup raw
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         * data buffer to avoid extra copy.
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         */
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        if (tif->tif_rawcp != pp)
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            _TIFFmemcpy(tif->tif_rawcp, pp, n);
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        tif->tif_rawcp += n;
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        tif->tif_rawcc += n;
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        pp += n;
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        cc -= n;
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        if (tif->tif_rawcc >= tif->tif_rawdatasize && !TIFFFlushData1(tif))
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            return (0);
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    }
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    return (1);
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}
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/*
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 * Decode a hunk of pixels.
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 */
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static int DumpModeDecode(TIFF *tif, uint8_t *buf, tmsize_t cc, uint16_t s)
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{
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    static const char module[] = "DumpModeDecode";
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    (void)s;
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    if (tif->tif_rawcc < cc)
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    {
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        TIFFErrorExtR(tif, module,
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                      "Not enough data for scanline %" PRIu32
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                      ", expected a request for at most %" TIFF_SSIZE_FORMAT
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                      " bytes, got a request for %" TIFF_SSIZE_FORMAT " bytes",
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                      tif->tif_row, tif->tif_rawcc, cc);
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        return (0);
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    }
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    /*
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     * Avoid copy if client has setup raw
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     * data buffer to avoid extra copy.
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     */
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    if (tif->tif_rawcp != buf)
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        _TIFFmemcpy(buf, tif->tif_rawcp, cc);
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    tif->tif_rawcp += cc;
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    tif->tif_rawcc -= cc;
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    return (1);
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}
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/*
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 * Seek forwards nrows in the current strip.
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 */
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static int DumpModeSeek(TIFF *tif, uint32_t nrows)
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{
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    tif->tif_rawcp += nrows * tif->tif_scanlinesize;
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    tif->tif_rawcc -= nrows * tif->tif_scanlinesize;
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    return (1);
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}
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/*
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 * Initialize dump mode.
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 */
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int TIFFInitDumpMode(TIFF *tif, int scheme)
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{
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    (void)scheme;
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    tif->tif_fixuptags = DumpFixupTags;
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    tif->tif_decoderow = DumpModeDecode;
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    tif->tif_decodestrip = DumpModeDecode;
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    tif->tif_decodetile = DumpModeDecode;
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    tif->tif_encoderow = DumpModeEncode;
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    tif->tif_encodestrip = DumpModeEncode;
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    tif->tif_encodetile = DumpModeEncode;
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    tif->tif_seek = DumpModeSeek;
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    return (1);
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}
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