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[libpng17] Added PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED macro, on by default.

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Glenn Randers-Pehrson 2015-02-10 17:09:48 -06:00
parent 8bc832389a
commit 9149259041
6 changed files with 9 additions and 1 deletions
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1
ANNOUNCE
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@ -704,6 +704,7 @@ Version 1.7.0beta48 [February 7, 2015]
Version 1.7.0beta49 [February 10, 2015]
Combined sub_row, up_row, avg_row, and paeth_row buffers into a
single try_row buffer.
Added PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED macro, on by default.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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1
CHANGES
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@ -4993,6 +4993,7 @@ Version 1.7.0beta48 [February 7, 2015]
Version 1.7.0beta49 [February 10, 2015]
Combined sub_row, up_row, avg_row, and paeth_row buffers into a
single try_row buffer.
Added PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED macro, on by default.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

2
png.h
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@ -1748,6 +1748,7 @@ PNG_FIXED_EXPORT(209, void, png_set_filter_heuristics_fixed,
* for PNG images, and do considerably fewer caclulations. In the future,
* these values may not correspond directly to the zlib compression levels.
*/
#ifdef PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED
PNG_EXPORT(69, void, png_set_compression_level, (png_structrp png_ptr,
int level));
@ -1765,6 +1766,7 @@ PNG_EXPORT(72, void, png_set_compression_window_bits, (png_structrp png_ptr,
PNG_EXPORT(73, void, png_set_compression_method, (png_structrp png_ptr,
int method));
#endif /* WRITE_CUSTOMIZE_COMPRESSION */
#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
/* Also set zlib parameters for compressing non-IDAT chunks */

2
pngwrite.c
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@ -1348,6 +1348,7 @@ png_set_filter_heuristics_fixed(png_structrp png_ptr, int heuristic_method,
#endif /* FIXED_POINT */
#endif /* WRITE_WEIGHTED_FILTER */
#ifdef PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED
void PNGAPI
png_set_compression_level(png_structrp png_ptr, int level)
{
@ -1430,6 +1431,7 @@ png_set_compression_method(png_structrp png_ptr, int method)
png_ptr->zlib_method = method;
}
#endif /* WRITE_CUSTOMIZE_COMPRESSION */
/* The following were added to libpng-1.5.4 */
#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED

1
scripts/pnglibconf.dfa
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@ -542,6 +542,7 @@ option USER_TRANSFORM_INFO if READ_USER_TRANSFORM, WRITE_USER_TRANSFORM
# non-IDAT chunks (zTXt, iTXt, iCCP, and unknown chunks). This feature
# was added at libpng-1.5.3.
option WRITE_CUSTOMIZE_ZTXT_COMPRESSION requires WRITE
option WRITE_CUSTOMIZE_COMPRESSION requires WRITE
# Any chunks you are not interested in, you can undef here. The
# ones that allocate memory may be expecially important (hIST,

3
scripts/pnglibconf.h.prebuilt
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@ -2,7 +2,7 @@
/* pnglibconf.h - library build configuration */
/* Libpng version 1.7.0beta49 - February 7, 2015 */
/* Libpng version 1.7.0beta49 - February 10, 2015 */
/* Copyright (c) 1998-2014 Glenn Randers-Pehrson */
@ -126,6 +126,7 @@
#define PNG_WRITE_BGR_SUPPORTED
#define PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
#define PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
#define PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED
#define PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
#define PNG_WRITE_FILLER_SUPPORTED
#define PNG_WRITE_FILTER_SUPPORTED