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tif_jpeg.c: resolved buffer incrementation bug

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Joris Van Damme 2007-10-22 18:39:53 +00:00
parent fe89e891bf
commit 7497b6e5f3
2 changed files with 9 additions and 5 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2007-10-22 Joris Van Damme <joris.at.lebbeke@skynet.be>
* tif_jpeg.c: Resolved buffer incrementation bug that lead to faulty images
at best, access violation at worst, when subsampled JPEG compressed imagery
is decoded without the JPEG_COLORMODE feature
2007-10-11 Frank Warmerdam <warmerdam@pobox.com>
* html/index.html: Update "people responsible" section.

8
libtiff/tif_jpeg.c
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@ -1,4 +1,4 @@
/* $Id: tif_jpeg.c,v 1.73 2007-07-18 15:26:09 dron Exp $ */
/* $Id: tif_jpeg.c,v 1.74 2007-10-22 18:39:54 joris Exp $ */
/*
* Copyright (c) 1994-1997 Sam Leffler
@ -1334,10 +1334,8 @@ JPEGDecodeRaw(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
sp->scancount ++;
tif->tif_row += sp->v_sampling;
/* increment/decrement of buf and cc is still incorrect, but should not matter
* TODO: resolve this */
buf += sp->bytesperline;
cc -= sp->bytesperline;
buf += clumps_per_line*samples_per_clump;
cc -= clumps_per_line*samples_per_clump;
nrows -= sp->v_sampling;
} while (nrows > 0);