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[master] Reenabled png_set_dither() but renamed it to png_set_quantize() to

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reflect more accurately what it actually does.  At the same time, renamed
the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros to
PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS.
This commit is contained in:
Glenn Randers-Pehrson
2010-04-16 07:24:52 -05:00
parent 7aad4e7fb4
commit 8dc3729522
11 changed files with 270 additions and 162 deletions
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10
pngpriv.h
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@@ -1,7 +1,7 @@
/* pngpriv.h - private declarations for use inside libpng
*
* libpng version 1.4.2rc01 - April 10, 2010
* libpng version 1.4.2rc02 - April 16, 2010
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -106,7 +106,7 @@
#define PNG_SHIFT 0x0008
#define PNG_SWAP_BYTES 0x0010
#define PNG_INVERT_MONO 0x0020
#define PNG_DITHER 0x0040
#define PNG_QUANTIZE 0x0040 /* formerly PNG_DITHER */
#define PNG_BACKGROUND 0x0080
#define PNG_BACKGROUND_EXPAND 0x0100
/* 0x0200 unused */
@@ -588,9 +588,9 @@ PNG_EXTERN void png_do_invert PNGARG((png_row_infop row_info, png_bytep row));
PNG_EXTERN void png_do_chop PNGARG((png_row_infop row_info, png_bytep row));
#endif
#ifdef PNG_READ_DITHER_SUPPORTED
PNG_EXTERN void png_do_dither PNGARG((png_row_infop row_info,
png_bytep row, png_bytep palette_lookup, png_bytep dither_lookup));
#ifdef PNG_READ_QUANTIZE_SUPPORTED
PNG_EXTERN void png_do_quantize PNGARG((png_row_infop row_info,
png_bytep row, png_bytep palette_lookup, png_bytep quantize_lookup));
# ifdef PNG_CORRECT_PALETTE_SUPPORTED
PNG_EXTERN void png_correct_palette PNGARG((png_structp png_ptr,