mirror of
https://github.com/opencv/opencv.git
synced 2024-12-29 04:28:17 +08:00
52f3f5a3f6
* libtiff upgrade to version 4.6.0 * fix tiffvers.h cmake generation * temp: force build 3rd party deps from source * remove libport.h and spintf.c * cmake fixes * don't use tiff_dummy_namespace on windows * introduce numeric_types namespace alias * include cstdint * uint16_t is not a numeric_types type * fix uint16 and uint32 type defs * use standard c++ types * remove unused files * remove more unused files * revert build 3rd party code from source --------- Co-authored-by: Misha Klatis <misha.klatis@autodesk.com>
1047 lines
30 KiB
C
1047 lines
30 KiB
C
/*
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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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* Predictor Tag Support (used by multiple codecs).
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*/
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#include "tif_predict.h"
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#include "tiffiop.h"
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#define PredictorState(tif) ((TIFFPredictorState *)(tif)->tif_data)
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static int horAcc8(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int horAcc16(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int horAcc32(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int horAcc64(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int swabHorAcc16(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int swabHorAcc32(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int swabHorAcc64(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int horDiff8(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int horDiff16(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int horDiff32(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int horDiff64(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int swabHorDiff16(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int swabHorDiff32(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int swabHorDiff64(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int fpAcc(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int fpDiff(TIFF *tif, uint8_t *cp0, tmsize_t cc);
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static int PredictorDecodeRow(TIFF *tif, uint8_t *op0, tmsize_t occ0,
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uint16_t s);
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static int PredictorDecodeTile(TIFF *tif, uint8_t *op0, tmsize_t occ0,
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uint16_t s);
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static int PredictorEncodeRow(TIFF *tif, uint8_t *bp, tmsize_t cc, uint16_t s);
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static int PredictorEncodeTile(TIFF *tif, uint8_t *bp0, tmsize_t cc0,
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uint16_t s);
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static int PredictorSetup(TIFF *tif)
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{
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static const char module[] = "PredictorSetup";
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TIFFPredictorState *sp = PredictorState(tif);
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TIFFDirectory *td = &tif->tif_dir;
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switch (sp->predictor) /* no differencing */
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{
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case PREDICTOR_NONE:
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return 1;
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case PREDICTOR_HORIZONTAL:
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if (td->td_bitspersample != 8 && td->td_bitspersample != 16 &&
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td->td_bitspersample != 32 && td->td_bitspersample != 64)
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{
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TIFFErrorExtR(tif, module,
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"Horizontal differencing \"Predictor\" not "
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"supported with %" PRIu16 "-bit samples",
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td->td_bitspersample);
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return 0;
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}
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break;
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case PREDICTOR_FLOATINGPOINT:
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if (td->td_sampleformat != SAMPLEFORMAT_IEEEFP)
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{
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TIFFErrorExtR(
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tif, module,
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"Floating point \"Predictor\" not supported with %" PRIu16
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" data format",
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td->td_sampleformat);
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return 0;
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}
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if (td->td_bitspersample != 16 && td->td_bitspersample != 24 &&
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td->td_bitspersample != 32 && td->td_bitspersample != 64)
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{ /* Should 64 be allowed? */
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TIFFErrorExtR(
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tif, module,
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"Floating point \"Predictor\" not supported with %" PRIu16
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"-bit samples",
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td->td_bitspersample);
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return 0;
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}
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break;
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default:
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TIFFErrorExtR(tif, module, "\"Predictor\" value %d not supported",
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sp->predictor);
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return 0;
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}
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sp->stride =
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(td->td_planarconfig == PLANARCONFIG_CONTIG ? td->td_samplesperpixel
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: 1);
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/*
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* Calculate the scanline/tile-width size in bytes.
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*/
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if (isTiled(tif))
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sp->rowsize = TIFFTileRowSize(tif);
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else
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sp->rowsize = TIFFScanlineSize(tif);
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if (sp->rowsize == 0)
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return 0;
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return 1;
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}
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static int PredictorSetupDecode(TIFF *tif)
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{
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TIFFPredictorState *sp = PredictorState(tif);
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TIFFDirectory *td = &tif->tif_dir;
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/* Note: when PredictorSetup() fails, the effets of setupdecode() */
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/* will not be "canceled" so setupdecode() might be robust to */
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/* be called several times. */
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if (!(*sp->setupdecode)(tif) || !PredictorSetup(tif))
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return 0;
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if (sp->predictor == 2)
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{
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switch (td->td_bitspersample)
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{
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case 8:
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sp->decodepfunc = horAcc8;
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break;
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case 16:
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sp->decodepfunc = horAcc16;
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break;
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case 32:
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sp->decodepfunc = horAcc32;
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break;
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case 64:
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sp->decodepfunc = horAcc64;
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break;
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}
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/*
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* Override default decoding method with one that does the
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* predictor stuff.
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*/
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if (tif->tif_decoderow != PredictorDecodeRow)
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{
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sp->decoderow = tif->tif_decoderow;
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tif->tif_decoderow = PredictorDecodeRow;
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sp->decodestrip = tif->tif_decodestrip;
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tif->tif_decodestrip = PredictorDecodeTile;
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sp->decodetile = tif->tif_decodetile;
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tif->tif_decodetile = PredictorDecodeTile;
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}
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/*
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* If the data is horizontally differenced 16-bit data that
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* requires byte-swapping, then it must be byte swapped before
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* the accumulation step. We do this with a special-purpose
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* routine and override the normal post decoding logic that
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* the library setup when the directory was read.
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*/
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if (tif->tif_flags & TIFF_SWAB)
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{
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if (sp->decodepfunc == horAcc16)
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{
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sp->decodepfunc = swabHorAcc16;
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tif->tif_postdecode = _TIFFNoPostDecode;
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}
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else if (sp->decodepfunc == horAcc32)
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{
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sp->decodepfunc = swabHorAcc32;
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tif->tif_postdecode = _TIFFNoPostDecode;
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}
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else if (sp->decodepfunc == horAcc64)
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{
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sp->decodepfunc = swabHorAcc64;
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tif->tif_postdecode = _TIFFNoPostDecode;
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}
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}
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}
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else if (sp->predictor == 3)
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{
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sp->decodepfunc = fpAcc;
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/*
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* Override default decoding method with one that does the
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* predictor stuff.
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*/
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if (tif->tif_decoderow != PredictorDecodeRow)
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{
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sp->decoderow = tif->tif_decoderow;
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tif->tif_decoderow = PredictorDecodeRow;
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sp->decodestrip = tif->tif_decodestrip;
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tif->tif_decodestrip = PredictorDecodeTile;
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sp->decodetile = tif->tif_decodetile;
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tif->tif_decodetile = PredictorDecodeTile;
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}
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/*
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* The data should not be swapped outside of the floating
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* point predictor, the accumulation routine should return
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* byres in the native order.
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*/
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if (tif->tif_flags & TIFF_SWAB)
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{
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tif->tif_postdecode = _TIFFNoPostDecode;
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}
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/*
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* Allocate buffer to keep the decoded bytes before
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* rearranging in the right order
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*/
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}
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return 1;
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}
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static int PredictorSetupEncode(TIFF *tif)
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{
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TIFFPredictorState *sp = PredictorState(tif);
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TIFFDirectory *td = &tif->tif_dir;
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if (!(*sp->setupencode)(tif) || !PredictorSetup(tif))
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return 0;
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if (sp->predictor == 2)
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{
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switch (td->td_bitspersample)
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{
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case 8:
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sp->encodepfunc = horDiff8;
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break;
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case 16:
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sp->encodepfunc = horDiff16;
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break;
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case 32:
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sp->encodepfunc = horDiff32;
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break;
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case 64:
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sp->encodepfunc = horDiff64;
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break;
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}
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/*
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* Override default encoding method with one that does the
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* predictor stuff.
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*/
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if (tif->tif_encoderow != PredictorEncodeRow)
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{
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sp->encoderow = tif->tif_encoderow;
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tif->tif_encoderow = PredictorEncodeRow;
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sp->encodestrip = tif->tif_encodestrip;
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tif->tif_encodestrip = PredictorEncodeTile;
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sp->encodetile = tif->tif_encodetile;
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tif->tif_encodetile = PredictorEncodeTile;
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}
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/*
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* If the data is horizontally differenced 16-bit data that
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* requires byte-swapping, then it must be byte swapped after
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* the differentiation step. We do this with a special-purpose
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* routine and override the normal post decoding logic that
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* the library setup when the directory was read.
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*/
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if (tif->tif_flags & TIFF_SWAB)
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{
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if (sp->encodepfunc == horDiff16)
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{
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sp->encodepfunc = swabHorDiff16;
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tif->tif_postdecode = _TIFFNoPostDecode;
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}
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else if (sp->encodepfunc == horDiff32)
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{
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sp->encodepfunc = swabHorDiff32;
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tif->tif_postdecode = _TIFFNoPostDecode;
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}
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else if (sp->encodepfunc == horDiff64)
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{
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sp->encodepfunc = swabHorDiff64;
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tif->tif_postdecode = _TIFFNoPostDecode;
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}
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}
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}
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else if (sp->predictor == 3)
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{
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sp->encodepfunc = fpDiff;
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/*
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* Override default encoding method with one that does the
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* predictor stuff.
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*/
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if (tif->tif_encoderow != PredictorEncodeRow)
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{
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sp->encoderow = tif->tif_encoderow;
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tif->tif_encoderow = PredictorEncodeRow;
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sp->encodestrip = tif->tif_encodestrip;
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tif->tif_encodestrip = PredictorEncodeTile;
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sp->encodetile = tif->tif_encodetile;
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tif->tif_encodetile = PredictorEncodeTile;
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}
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}
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return 1;
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}
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#define REPEAT4(n, op) \
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switch (n) \
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{ \
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default: \
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{ \
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tmsize_t i; \
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for (i = n - 4; i > 0; i--) \
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{ \
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op; \
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} \
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} /*-fallthrough*/ \
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case 4: \
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op; /*-fallthrough*/ \
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case 3: \
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op; /*-fallthrough*/ \
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case 2: \
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op; /*-fallthrough*/ \
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case 1: \
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op; /*-fallthrough*/ \
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case 0:; \
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}
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/* Remarks related to C standard compliance in all below functions : */
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/* - to avoid any undefined behavior, we only operate on unsigned types */
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/* since the behavior of "overflows" is defined (wrap over) */
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/* - when storing into the byte stream, we explicitly mask with 0xff so */
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/* as to make icc -check=conversions happy (not necessary by the standard) */
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TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
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static int horAcc8(TIFF *tif, uint8_t *cp0, tmsize_t cc)
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{
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tmsize_t stride = PredictorState(tif)->stride;
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unsigned char *cp = (unsigned char *)cp0;
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if ((cc % stride) != 0)
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{
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TIFFErrorExtR(tif, "horAcc8", "%s", "(cc%stride)!=0");
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return 0;
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}
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if (cc > stride)
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{
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/*
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* Pipeline the most common cases.
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*/
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if (stride == 3)
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{
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unsigned int cr = cp[0];
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unsigned int cg = cp[1];
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unsigned int cb = cp[2];
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tmsize_t i = stride;
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for (; i < cc; i += stride)
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{
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cp[i + 0] = (unsigned char)((cr += cp[i + 0]) & 0xff);
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cp[i + 1] = (unsigned char)((cg += cp[i + 1]) & 0xff);
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cp[i + 2] = (unsigned char)((cb += cp[i + 2]) & 0xff);
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}
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}
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else if (stride == 4)
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{
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unsigned int cr = cp[0];
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unsigned int cg = cp[1];
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unsigned int cb = cp[2];
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unsigned int ca = cp[3];
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tmsize_t i = stride;
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for (; i < cc; i += stride)
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{
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cp[i + 0] = (unsigned char)((cr += cp[i + 0]) & 0xff);
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cp[i + 1] = (unsigned char)((cg += cp[i + 1]) & 0xff);
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cp[i + 2] = (unsigned char)((cb += cp[i + 2]) & 0xff);
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cp[i + 3] = (unsigned char)((ca += cp[i + 3]) & 0xff);
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}
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}
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else
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{
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cc -= stride;
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do
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{
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REPEAT4(stride,
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cp[stride] = (unsigned char)((cp[stride] + *cp) & 0xff);
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cp++)
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cc -= stride;
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} while (cc > 0);
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}
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}
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return 1;
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}
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static int swabHorAcc16(TIFF *tif, uint8_t *cp0, tmsize_t cc)
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{
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uint16_t *wp = (uint16_t *)cp0;
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tmsize_t wc = cc / 2;
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TIFFSwabArrayOfShort(wp, wc);
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return horAcc16(tif, cp0, cc);
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}
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TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
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static int horAcc16(TIFF *tif, uint8_t *cp0, tmsize_t cc)
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{
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tmsize_t stride = PredictorState(tif)->stride;
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uint16_t *wp = (uint16_t *)cp0;
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tmsize_t wc = cc / 2;
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if ((cc % (2 * stride)) != 0)
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{
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TIFFErrorExtR(tif, "horAcc16", "%s", "cc%(2*stride))!=0");
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return 0;
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}
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if (wc > stride)
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{
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wc -= stride;
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do
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{
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REPEAT4(stride, wp[stride] = (uint16_t)(((unsigned int)wp[stride] +
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(unsigned int)wp[0]) &
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0xffff);
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wp++)
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wc -= stride;
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} while (wc > 0);
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}
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return 1;
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}
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static int swabHorAcc32(TIFF *tif, uint8_t *cp0, tmsize_t cc)
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{
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uint32_t *wp = (uint32_t *)cp0;
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tmsize_t wc = cc / 4;
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TIFFSwabArrayOfLong(wp, wc);
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return horAcc32(tif, cp0, cc);
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}
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TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
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static int horAcc32(TIFF *tif, uint8_t *cp0, tmsize_t cc)
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{
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tmsize_t stride = PredictorState(tif)->stride;
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uint32_t *wp = (uint32_t *)cp0;
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tmsize_t wc = cc / 4;
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if ((cc % (4 * stride)) != 0)
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{
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TIFFErrorExtR(tif, "horAcc32", "%s", "cc%(4*stride))!=0");
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return 0;
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}
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if (wc > stride)
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{
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wc -= stride;
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do
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{
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REPEAT4(stride, wp[stride] += wp[0]; wp++)
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wc -= stride;
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} while (wc > 0);
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}
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return 1;
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}
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static int swabHorAcc64(TIFF *tif, uint8_t *cp0, tmsize_t cc)
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{
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uint64_t *wp = (uint64_t *)cp0;
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tmsize_t wc = cc / 8;
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TIFFSwabArrayOfLong8(wp, wc);
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return horAcc64(tif, cp0, cc);
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}
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TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
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static int horAcc64(TIFF *tif, uint8_t *cp0, tmsize_t cc)
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{
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tmsize_t stride = PredictorState(tif)->stride;
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uint64_t *wp = (uint64_t *)cp0;
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tmsize_t wc = cc / 8;
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if ((cc % (8 * stride)) != 0)
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{
|
|
TIFFErrorExtR(tif, "horAcc64", "%s", "cc%(8*stride))!=0");
|
|
return 0;
|
|
}
|
|
|
|
if (wc > stride)
|
|
{
|
|
wc -= stride;
|
|
do
|
|
{
|
|
REPEAT4(stride, wp[stride] += wp[0]; wp++)
|
|
wc -= stride;
|
|
} while (wc > 0);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Floating point predictor accumulation routine.
|
|
*/
|
|
static int fpAcc(TIFF *tif, uint8_t *cp0, tmsize_t cc)
|
|
{
|
|
tmsize_t stride = PredictorState(tif)->stride;
|
|
uint32_t bps = tif->tif_dir.td_bitspersample / 8;
|
|
tmsize_t wc = cc / bps;
|
|
tmsize_t count = cc;
|
|
uint8_t *cp = (uint8_t *)cp0;
|
|
uint8_t *tmp;
|
|
|
|
if (cc % (bps * stride) != 0)
|
|
{
|
|
TIFFErrorExtR(tif, "fpAcc", "%s", "cc%(bps*stride))!=0");
|
|
return 0;
|
|
}
|
|
|
|
tmp = (uint8_t *)_TIFFmallocExt(tif, cc);
|
|
if (!tmp)
|
|
return 0;
|
|
|
|
while (count > stride)
|
|
{
|
|
REPEAT4(stride,
|
|
cp[stride] = (unsigned char)((cp[stride] + cp[0]) & 0xff);
|
|
cp++)
|
|
count -= stride;
|
|
}
|
|
|
|
_TIFFmemcpy(tmp, cp0, cc);
|
|
cp = (uint8_t *)cp0;
|
|
for (count = 0; count < wc; count++)
|
|
{
|
|
uint32_t byte;
|
|
for (byte = 0; byte < bps; byte++)
|
|
{
|
|
#if WORDS_BIGENDIAN
|
|
cp[bps * count + byte] = tmp[byte * wc + count];
|
|
#else
|
|
cp[bps * count + byte] = tmp[(bps - byte - 1) * wc + count];
|
|
#endif
|
|
}
|
|
}
|
|
_TIFFfreeExt(tif, tmp);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Decode a scanline and apply the predictor routine.
|
|
*/
|
|
static int PredictorDecodeRow(TIFF *tif, uint8_t *op0, tmsize_t occ0,
|
|
uint16_t s)
|
|
{
|
|
TIFFPredictorState *sp = PredictorState(tif);
|
|
|
|
assert(sp != NULL);
|
|
assert(sp->decoderow != NULL);
|
|
assert(sp->decodepfunc != NULL);
|
|
|
|
if ((*sp->decoderow)(tif, op0, occ0, s))
|
|
{
|
|
return (*sp->decodepfunc)(tif, op0, occ0);
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Decode a tile/strip and apply the predictor routine.
|
|
* Note that horizontal differencing must be done on a
|
|
* row-by-row basis. The width of a "row" has already
|
|
* been calculated at pre-decode time according to the
|
|
* strip/tile dimensions.
|
|
*/
|
|
static int PredictorDecodeTile(TIFF *tif, uint8_t *op0, tmsize_t occ0,
|
|
uint16_t s)
|
|
{
|
|
TIFFPredictorState *sp = PredictorState(tif);
|
|
|
|
assert(sp != NULL);
|
|
assert(sp->decodetile != NULL);
|
|
|
|
if ((*sp->decodetile)(tif, op0, occ0, s))
|
|
{
|
|
tmsize_t rowsize = sp->rowsize;
|
|
assert(rowsize > 0);
|
|
if ((occ0 % rowsize) != 0)
|
|
{
|
|
TIFFErrorExtR(tif, "PredictorDecodeTile", "%s",
|
|
"occ0%rowsize != 0");
|
|
return 0;
|
|
}
|
|
assert(sp->decodepfunc != NULL);
|
|
while (occ0 > 0)
|
|
{
|
|
if (!(*sp->decodepfunc)(tif, op0, rowsize))
|
|
return 0;
|
|
occ0 -= rowsize;
|
|
op0 += rowsize;
|
|
}
|
|
return 1;
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
|
|
static int horDiff8(TIFF *tif, uint8_t *cp0, tmsize_t cc)
|
|
{
|
|
TIFFPredictorState *sp = PredictorState(tif);
|
|
tmsize_t stride = sp->stride;
|
|
unsigned char *cp = (unsigned char *)cp0;
|
|
|
|
if ((cc % stride) != 0)
|
|
{
|
|
TIFFErrorExtR(tif, "horDiff8", "%s", "(cc%stride)!=0");
|
|
return 0;
|
|
}
|
|
|
|
if (cc > stride)
|
|
{
|
|
cc -= stride;
|
|
/*
|
|
* Pipeline the most common cases.
|
|
*/
|
|
if (stride == 3)
|
|
{
|
|
unsigned int r1, g1, b1;
|
|
unsigned int r2 = cp[0];
|
|
unsigned int g2 = cp[1];
|
|
unsigned int b2 = cp[2];
|
|
do
|
|
{
|
|
r1 = cp[3];
|
|
cp[3] = (unsigned char)((r1 - r2) & 0xff);
|
|
r2 = r1;
|
|
g1 = cp[4];
|
|
cp[4] = (unsigned char)((g1 - g2) & 0xff);
|
|
g2 = g1;
|
|
b1 = cp[5];
|
|
cp[5] = (unsigned char)((b1 - b2) & 0xff);
|
|
b2 = b1;
|
|
cp += 3;
|
|
} while ((cc -= 3) > 0);
|
|
}
|
|
else if (stride == 4)
|
|
{
|
|
unsigned int r1, g1, b1, a1;
|
|
unsigned int r2 = cp[0];
|
|
unsigned int g2 = cp[1];
|
|
unsigned int b2 = cp[2];
|
|
unsigned int a2 = cp[3];
|
|
do
|
|
{
|
|
r1 = cp[4];
|
|
cp[4] = (unsigned char)((r1 - r2) & 0xff);
|
|
r2 = r1;
|
|
g1 = cp[5];
|
|
cp[5] = (unsigned char)((g1 - g2) & 0xff);
|
|
g2 = g1;
|
|
b1 = cp[6];
|
|
cp[6] = (unsigned char)((b1 - b2) & 0xff);
|
|
b2 = b1;
|
|
a1 = cp[7];
|
|
cp[7] = (unsigned char)((a1 - a2) & 0xff);
|
|
a2 = a1;
|
|
cp += 4;
|
|
} while ((cc -= 4) > 0);
|
|
}
|
|
else
|
|
{
|
|
cp += cc - 1;
|
|
do
|
|
{
|
|
REPEAT4(stride,
|
|
cp[stride] =
|
|
(unsigned char)((cp[stride] - cp[0]) & 0xff);
|
|
cp--)
|
|
} while ((cc -= stride) > 0);
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
|
|
static int horDiff16(TIFF *tif, uint8_t *cp0, tmsize_t cc)
|
|
{
|
|
TIFFPredictorState *sp = PredictorState(tif);
|
|
tmsize_t stride = sp->stride;
|
|
uint16_t *wp = (uint16_t *)cp0;
|
|
tmsize_t wc = cc / 2;
|
|
|
|
if ((cc % (2 * stride)) != 0)
|
|
{
|
|
TIFFErrorExtR(tif, "horDiff8", "%s", "(cc%(2*stride))!=0");
|
|
return 0;
|
|
}
|
|
|
|
if (wc > stride)
|
|
{
|
|
wc -= stride;
|
|
wp += wc - 1;
|
|
do
|
|
{
|
|
REPEAT4(stride, wp[stride] = (uint16_t)(((unsigned int)wp[stride] -
|
|
(unsigned int)wp[0]) &
|
|
0xffff);
|
|
wp--)
|
|
wc -= stride;
|
|
} while (wc > 0);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int swabHorDiff16(TIFF *tif, uint8_t *cp0, tmsize_t cc)
|
|
{
|
|
uint16_t *wp = (uint16_t *)cp0;
|
|
tmsize_t wc = cc / 2;
|
|
|
|
if (!horDiff16(tif, cp0, cc))
|
|
return 0;
|
|
|
|
TIFFSwabArrayOfShort(wp, wc);
|
|
return 1;
|
|
}
|
|
|
|
TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
|
|
static int horDiff32(TIFF *tif, uint8_t *cp0, tmsize_t cc)
|
|
{
|
|
TIFFPredictorState *sp = PredictorState(tif);
|
|
tmsize_t stride = sp->stride;
|
|
uint32_t *wp = (uint32_t *)cp0;
|
|
tmsize_t wc = cc / 4;
|
|
|
|
if ((cc % (4 * stride)) != 0)
|
|
{
|
|
TIFFErrorExtR(tif, "horDiff32", "%s", "(cc%(4*stride))!=0");
|
|
return 0;
|
|
}
|
|
|
|
if (wc > stride)
|
|
{
|
|
wc -= stride;
|
|
wp += wc - 1;
|
|
do
|
|
{
|
|
REPEAT4(stride, wp[stride] -= wp[0]; wp--)
|
|
wc -= stride;
|
|
} while (wc > 0);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int swabHorDiff32(TIFF *tif, uint8_t *cp0, tmsize_t cc)
|
|
{
|
|
uint32_t *wp = (uint32_t *)cp0;
|
|
tmsize_t wc = cc / 4;
|
|
|
|
if (!horDiff32(tif, cp0, cc))
|
|
return 0;
|
|
|
|
TIFFSwabArrayOfLong(wp, wc);
|
|
return 1;
|
|
}
|
|
|
|
TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
|
|
static int horDiff64(TIFF *tif, uint8_t *cp0, tmsize_t cc)
|
|
{
|
|
TIFFPredictorState *sp = PredictorState(tif);
|
|
tmsize_t stride = sp->stride;
|
|
uint64_t *wp = (uint64_t *)cp0;
|
|
tmsize_t wc = cc / 8;
|
|
|
|
if ((cc % (8 * stride)) != 0)
|
|
{
|
|
TIFFErrorExtR(tif, "horDiff64", "%s", "(cc%(8*stride))!=0");
|
|
return 0;
|
|
}
|
|
|
|
if (wc > stride)
|
|
{
|
|
wc -= stride;
|
|
wp += wc - 1;
|
|
do
|
|
{
|
|
REPEAT4(stride, wp[stride] -= wp[0]; wp--)
|
|
wc -= stride;
|
|
} while (wc > 0);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int swabHorDiff64(TIFF *tif, uint8_t *cp0, tmsize_t cc)
|
|
{
|
|
uint64_t *wp = (uint64_t *)cp0;
|
|
tmsize_t wc = cc / 8;
|
|
|
|
if (!horDiff64(tif, cp0, cc))
|
|
return 0;
|
|
|
|
TIFFSwabArrayOfLong8(wp, wc);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Floating point predictor differencing routine.
|
|
*/
|
|
TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
|
|
static int fpDiff(TIFF *tif, uint8_t *cp0, tmsize_t cc)
|
|
{
|
|
tmsize_t stride = PredictorState(tif)->stride;
|
|
uint32_t bps = tif->tif_dir.td_bitspersample / 8;
|
|
tmsize_t wc = cc / bps;
|
|
tmsize_t count;
|
|
uint8_t *cp = (uint8_t *)cp0;
|
|
uint8_t *tmp;
|
|
|
|
if ((cc % (bps * stride)) != 0)
|
|
{
|
|
TIFFErrorExtR(tif, "fpDiff", "%s", "(cc%(bps*stride))!=0");
|
|
return 0;
|
|
}
|
|
|
|
tmp = (uint8_t *)_TIFFmallocExt(tif, cc);
|
|
if (!tmp)
|
|
return 0;
|
|
|
|
_TIFFmemcpy(tmp, cp0, cc);
|
|
for (count = 0; count < wc; count++)
|
|
{
|
|
uint32_t byte;
|
|
for (byte = 0; byte < bps; byte++)
|
|
{
|
|
#if WORDS_BIGENDIAN
|
|
cp[byte * wc + count] = tmp[bps * count + byte];
|
|
#else
|
|
cp[(bps - byte - 1) * wc + count] = tmp[bps * count + byte];
|
|
#endif
|
|
}
|
|
}
|
|
_TIFFfreeExt(tif, tmp);
|
|
|
|
cp = (uint8_t *)cp0;
|
|
cp += cc - stride - 1;
|
|
for (count = cc; count > stride; count -= stride)
|
|
REPEAT4(stride,
|
|
cp[stride] = (unsigned char)((cp[stride] - cp[0]) & 0xff);
|
|
cp--)
|
|
return 1;
|
|
}
|
|
|
|
static int PredictorEncodeRow(TIFF *tif, uint8_t *bp, tmsize_t cc, uint16_t s)
|
|
{
|
|
TIFFPredictorState *sp = PredictorState(tif);
|
|
|
|
assert(sp != NULL);
|
|
assert(sp->encodepfunc != NULL);
|
|
assert(sp->encoderow != NULL);
|
|
|
|
/* XXX horizontal differencing alters user's data XXX */
|
|
if (!(*sp->encodepfunc)(tif, bp, cc))
|
|
return 0;
|
|
return (*sp->encoderow)(tif, bp, cc, s);
|
|
}
|
|
|
|
static int PredictorEncodeTile(TIFF *tif, uint8_t *bp0, tmsize_t cc0,
|
|
uint16_t s)
|
|
{
|
|
static const char module[] = "PredictorEncodeTile";
|
|
TIFFPredictorState *sp = PredictorState(tif);
|
|
uint8_t *working_copy;
|
|
tmsize_t cc = cc0, rowsize;
|
|
unsigned char *bp;
|
|
int result_code;
|
|
|
|
assert(sp != NULL);
|
|
assert(sp->encodepfunc != NULL);
|
|
assert(sp->encodetile != NULL);
|
|
|
|
/*
|
|
* Do predictor manipulation in a working buffer to avoid altering
|
|
* the callers buffer. http://trac.osgeo.org/gdal/ticket/1965
|
|
*/
|
|
working_copy = (uint8_t *)_TIFFmallocExt(tif, cc0);
|
|
if (working_copy == NULL)
|
|
{
|
|
TIFFErrorExtR(tif, module,
|
|
"Out of memory allocating %" PRId64 " byte temp buffer.",
|
|
(int64_t)cc0);
|
|
return 0;
|
|
}
|
|
memcpy(working_copy, bp0, cc0);
|
|
bp = working_copy;
|
|
|
|
rowsize = sp->rowsize;
|
|
assert(rowsize > 0);
|
|
if ((cc0 % rowsize) != 0)
|
|
{
|
|
TIFFErrorExtR(tif, "PredictorEncodeTile", "%s", "(cc0%rowsize)!=0");
|
|
_TIFFfreeExt(tif, working_copy);
|
|
return 0;
|
|
}
|
|
while (cc > 0)
|
|
{
|
|
(*sp->encodepfunc)(tif, bp, rowsize);
|
|
cc -= rowsize;
|
|
bp += rowsize;
|
|
}
|
|
result_code = (*sp->encodetile)(tif, working_copy, cc0, s);
|
|
|
|
_TIFFfreeExt(tif, working_copy);
|
|
|
|
return result_code;
|
|
}
|
|
|
|
#define FIELD_PREDICTOR (FIELD_CODEC + 0) /* XXX */
|
|
|
|
static const TIFFField predictFields[] = {
|
|
{TIFFTAG_PREDICTOR, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16,
|
|
TIFF_SETGET_UINT16, FIELD_PREDICTOR, FALSE, FALSE, "Predictor", NULL},
|
|
};
|
|
|
|
static int PredictorVSetField(TIFF *tif, uint32_t tag, va_list ap)
|
|
{
|
|
TIFFPredictorState *sp = PredictorState(tif);
|
|
|
|
assert(sp != NULL);
|
|
assert(sp->vsetparent != NULL);
|
|
|
|
switch (tag)
|
|
{
|
|
case TIFFTAG_PREDICTOR:
|
|
sp->predictor = (uint16_t)va_arg(ap, uint16_vap);
|
|
TIFFSetFieldBit(tif, FIELD_PREDICTOR);
|
|
break;
|
|
default:
|
|
return (*sp->vsetparent)(tif, tag, ap);
|
|
}
|
|
tif->tif_flags |= TIFF_DIRTYDIRECT;
|
|
return 1;
|
|
}
|
|
|
|
static int PredictorVGetField(TIFF *tif, uint32_t tag, va_list ap)
|
|
{
|
|
TIFFPredictorState *sp = PredictorState(tif);
|
|
|
|
assert(sp != NULL);
|
|
assert(sp->vgetparent != NULL);
|
|
|
|
switch (tag)
|
|
{
|
|
case TIFFTAG_PREDICTOR:
|
|
*va_arg(ap, uint16_t *) = (uint16_t)sp->predictor;
|
|
break;
|
|
default:
|
|
return (*sp->vgetparent)(tif, tag, ap);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void PredictorPrintDir(TIFF *tif, FILE *fd, long flags)
|
|
{
|
|
TIFFPredictorState *sp = PredictorState(tif);
|
|
|
|
(void)flags;
|
|
if (TIFFFieldSet(tif, FIELD_PREDICTOR))
|
|
{
|
|
fprintf(fd, " Predictor: ");
|
|
switch (sp->predictor)
|
|
{
|
|
case 1:
|
|
fprintf(fd, "none ");
|
|
break;
|
|
case 2:
|
|
fprintf(fd, "horizontal differencing ");
|
|
break;
|
|
case 3:
|
|
fprintf(fd, "floating point predictor ");
|
|
break;
|
|
}
|
|
fprintf(fd, "%d (0x%x)\n", sp->predictor, sp->predictor);
|
|
}
|
|
if (sp->printdir)
|
|
(*sp->printdir)(tif, fd, flags);
|
|
}
|
|
|
|
int TIFFPredictorInit(TIFF *tif)
|
|
{
|
|
TIFFPredictorState *sp = PredictorState(tif);
|
|
|
|
assert(sp != 0);
|
|
|
|
/*
|
|
* Merge codec-specific tag information.
|
|
*/
|
|
if (!_TIFFMergeFields(tif, predictFields, TIFFArrayCount(predictFields)))
|
|
{
|
|
TIFFErrorExtR(tif, "TIFFPredictorInit",
|
|
"Merging Predictor codec-specific tags failed");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Override parent get/set field methods.
|
|
*/
|
|
sp->vgetparent = tif->tif_tagmethods.vgetfield;
|
|
tif->tif_tagmethods.vgetfield =
|
|
PredictorVGetField; /* hook for predictor tag */
|
|
sp->vsetparent = tif->tif_tagmethods.vsetfield;
|
|
tif->tif_tagmethods.vsetfield =
|
|
PredictorVSetField; /* hook for predictor tag */
|
|
sp->printdir = tif->tif_tagmethods.printdir;
|
|
tif->tif_tagmethods.printdir =
|
|
PredictorPrintDir; /* hook for predictor tag */
|
|
|
|
sp->setupdecode = tif->tif_setupdecode;
|
|
tif->tif_setupdecode = PredictorSetupDecode;
|
|
sp->setupencode = tif->tif_setupencode;
|
|
tif->tif_setupencode = PredictorSetupEncode;
|
|
|
|
sp->predictor = 1; /* default value */
|
|
sp->encodepfunc = NULL; /* no predictor routine */
|
|
sp->decodepfunc = NULL; /* no predictor routine */
|
|
return 1;
|
|
}
|
|
|
|
int TIFFPredictorCleanup(TIFF *tif)
|
|
{
|
|
TIFFPredictorState *sp = PredictorState(tif);
|
|
|
|
assert(sp != 0);
|
|
|
|
tif->tif_tagmethods.vgetfield = sp->vgetparent;
|
|
tif->tif_tagmethods.vsetfield = sp->vsetparent;
|
|
tif->tif_tagmethods.printdir = sp->printdir;
|
|
tif->tif_setupdecode = sp->setupdecode;
|
|
tif->tif_setupencode = sp->setupencode;
|
|
|
|
return 1;
|
|
}
|