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[libpng15] Restored unused FILTER_HEURISTIC macros removed at

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libpng-1.5.23beta02 to png.h to avoid compatibility warnings.
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Glenn Randers-Pehrson 2015-07-13 07:04:17 -05:00
parent ceaf50079a
commit ce12446903
2 changed files with 8 additions and 0 deletions
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@ -4362,6 +4362,8 @@ Version 1.5.23beta02 [June 30, 2015]
Version 1.5.23rc01 [July 9, 2015]
Belatedly added Mans Rullgard to the list of Contributing Authors.
Restored unused FILTER_HEURISTIC macros removed at libpng-1.5.23beta02
to png.h to avoid compatibility warnings.
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png.h
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@ -1679,6 +1679,12 @@ PNG_FIXED_EXPORT(209, void, png_set_filter_heuristics_fixed,
filter_weights, png_const_fixed_point_p filter_costs))
#endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */
/* 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 */
#ifdef PNG_WRITE_SUPPORTED
/* Set the library compression level. Currently, valid values range from
* 0 - 9, corresponding directly to the zlib compression levels 0 - 9