a41c294c3f
Replace assertions by runtime checks to avoid assertions in debug mode, or buffer overflows in release mode. Can happen when dealing with unusual tile size like YCbCr with subsampling. Reported as MSVR 35105 by Axel Souchet & Vishal Chauhan from the MSRC Vulnerabilities & Mitigations team.
80 lines
2.9 KiB
C
80 lines
2.9 KiB
C
/* $Id: tif_predict.h,v 1.9 2016-10-31 17:24:26 erouault Exp $ */
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/*
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* Copyright (c) 1995-1997 Sam Leffler
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* Copyright (c) 1995-1997 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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#ifndef _TIFFPREDICT_
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#define _TIFFPREDICT_
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/*
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* ``Library-private'' Support for the Predictor Tag
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*/
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typedef int (*TIFFEncodeDecodeMethod)(TIFF* tif, uint8* buf, tmsize_t size);
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/*
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* Codecs that want to support the Predictor tag must place
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* this structure first in their private state block so that
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* the predictor code can cast tif_data to find its state.
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*/
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typedef struct {
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int predictor; /* predictor tag value */
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tmsize_t stride; /* sample stride over data */
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tmsize_t rowsize; /* tile/strip row size */
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TIFFCodeMethod encoderow; /* parent codec encode/decode row */
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TIFFCodeMethod encodestrip; /* parent codec encode/decode strip */
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TIFFCodeMethod encodetile; /* parent codec encode/decode tile */
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TIFFEncodeDecodeMethod encodepfunc; /* horizontal differencer */
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TIFFCodeMethod decoderow; /* parent codec encode/decode row */
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TIFFCodeMethod decodestrip; /* parent codec encode/decode strip */
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TIFFCodeMethod decodetile; /* parent codec encode/decode tile */
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TIFFEncodeDecodeMethod decodepfunc; /* horizontal accumulator */
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TIFFVGetMethod vgetparent; /* super-class method */
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TIFFVSetMethod vsetparent; /* super-class method */
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TIFFPrintMethod printdir; /* super-class method */
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TIFFBoolMethod setupdecode; /* super-class method */
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TIFFBoolMethod setupencode; /* super-class method */
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} TIFFPredictorState;
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#if defined(__cplusplus)
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extern "C" {
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#endif
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extern int TIFFPredictorInit(TIFF*);
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extern int TIFFPredictorCleanup(TIFF*);
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#if defined(__cplusplus)
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}
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#endif
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#endif /* _TIFFPREDICT_ */
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/* vim: set ts=8 sts=8 sw=8 noet: */
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/*
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* Local Variables:
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* mode: c
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* c-basic-offset: 8
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* fill-column: 78
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* End:
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*/
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