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Filter heuristic implementation

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This implements the heuristic part of filter selction, the methodic testing
approach is still not implemented.  png_set_option methods are incomplete.

Signed-off-by: John Bowler <jbowler@acm.org>
This commit is contained in:
John Bowler
2015-12-02 17:08:17 -08:00
parent aacda27449
commit e9d567d9ec
5 changed files with 234 additions and 82 deletions
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5
scripts/pnglibconf.h.prebuilt
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@@ -1,8 +1,7 @@
/* libpng 1.7.0beta70 STANDARD API DEFINITION */
/* pnglibconf.h - library build configuration */
/* Libpng version 1.7.0beta70 - November 30, 2015 */
/* libpng version 1.7.0beta70, November 24, 2015 */
/* Copyright (c) 1998-2015 Glenn Randers-Pehrson */
@@ -135,11 +134,13 @@
#define PNG_WRITE_FILTER_SUPPORTED
#define PNG_WRITE_FLUSH_SUPPORTED
#define PNG_WRITE_GET_PALETTE_MAX_SUPPORTED
#define PNG_WRITE_HEURISTIC_FILTER_SUPPORTED
#define PNG_WRITE_INTERLACING_SUPPORTED
#define PNG_WRITE_INT_FUNCTIONS_SUPPORTED
#define PNG_WRITE_INVERT_ALPHA_SUPPORTED
#define PNG_WRITE_INVERT_SUPPORTED
#define PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
#define PNG_WRITE_OPTIMIZE_FILTER_SUPPORTED
#define PNG_WRITE_PACKSWAP_SUPPORTED
#define PNG_WRITE_PACK_SUPPORTED
#define PNG_WRITE_PNG_SUPPORTED