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[libpng16] Restored unused WEIGHTED_FILTER macros removed at libpng-1.6.18beta08

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to png.h to avoid compatibility warnings.
This commit is contained in:
Glenn Randers-Pehrson 2015-07-13 07:08:15 -05:00
parent 4cb6607c89
commit e0874e1934
2 changed files with 8 additions and 0 deletions
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@ -5294,6 +5294,8 @@ Version 1.6.18beta09 [July 5, 2015]
Version 1.6.18rc01 [July 9, 2015]
Belatedly added Mans Rullgard and James Yu to the list of Contributing
Authors.
Restored unused WEIGHTED_FILTER macros removed at libpng-1.6.18beta08
to png.h to avoid compatibility warnings.
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6
png.h
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@ -1632,6 +1632,12 @@ PNG_FIXED_EXPORT(209, void, png_set_filter_heuristics_fixed,
png_const_fixed_point_p filter_costs))
#endif /* WRITE_WEIGHTED_FILTER */
/* The following are no longer used and will be removed from libpng-1.7: */
#define PNG_FILTER_HEURISTIC_DEFAULT 0 /* Currently "UNWEIGHTED" */
#define PNG_FILTER_HEURISTIC_UNWEIGHTED 1 /* Used by libpng < 0.95 */
#define PNG_FILTER_HEURISTIC_WEIGHTED 2 /* Experimental feature */
#define PNG_FILTER_HEURISTIC_LAST 3 /* Not a valid value */
/* Set the library compression level. Currently, valid values range from
* 0 - 9, corresponding directly to the zlib compression levels 0 - 9
* (0 - no compression, 9 - "maximal" compression). Note that tests have