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[libpng16] Fixed old cut&paste bug in the weighted filter selection code in

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pngwutil.c, introduced in libpng-0.95, March 1997.
This commit is contained in:
Glenn Randers-Pehrson
2015-05-30 22:58:54 -05:00
parent b66de48b3b
commit 1088f4925f
3 changed files with 6 additions and 2 deletions
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4
pngwutil.c
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@@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file
*
* Last changed in libpng 1.6.17 [March 26, 2015]
* Last changed in libpng 1.6.18 [(PENDING RELEASE)]
* Copyright (c) 1998-2015 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -2814,7 +2814,7 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
for (j = 0; j < num_p_filters; j++)
{
if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_NONE)
if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_AVG)
{
sumlo = (sumlo * png_ptr->filter_weights[j]) >>
PNG_WEIGHT_SHIFT;