2006-04-20 22:31:14 -04:00
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2006-08-19 14:59:24 -04:00
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/* pngpriv.h - private declarations for use inside libpng
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2006-04-20 22:31:14 -04:00
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*
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2010-07-24 09:36:14 -04:00
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* libpng version 1.5.0beta36 - July 24, 2010
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2006-04-20 22:31:14 -04:00
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* For conditions of distribution and use, see copyright notice in png.h
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2010-01-01 11:29:06 -05:00
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* Copyright (c) 1998-2010 Glenn Randers-Pehrson
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2006-04-20 22:31:14 -04:00
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
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2009-06-24 10:31:28 -04:00
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*
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2009-06-26 22:46:52 -04:00
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* This code is released under the libpng license.
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2009-06-25 14:43:50 -04:00
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* For conditions of distribution and use, see the disclaimer
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2009-06-24 11:27:36 -04:00
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* and license in png.h
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2006-04-20 22:31:14 -04:00
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*/
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2006-08-19 14:59:24 -04:00
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/* The symbols declared in this file (including the functions declared
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* as PNG_EXTERN) are PRIVATE. They are not part of the libpng public
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* interface, and are not recommended for use by regular applications.
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* Some of them may become public in the future; others may stay private,
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* change in an incompatible way, or even disappear.
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* Although the libpng users are not forbidden to include this header,
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* they should be well aware of the issues that may arise from doing so.
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*/
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#ifndef PNGPRIV_H
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#define PNGPRIV_H
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2006-04-20 08:20:46 -04:00
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2010-03-12 18:36:53 -05:00
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#define PNGLIB_BUILD
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2010-04-17 19:03:02 -04:00
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#ifdef PNG_USER_CONFIG
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# include "pngusr.h"
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#endif
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2010-03-08 22:10:25 -05:00
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#include "png.h"
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#include "pnginfo.h"
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#include "pngstruct.h"
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2006-04-20 08:20:46 -04:00
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#include <stdlib.h>
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2010-04-16 23:12:51 -04:00
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#ifdef BSD
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# include <strings.h>
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#else
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# include <string.h>
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#endif
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2006-04-20 08:20:46 -04:00
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2010-03-09 17:45:06 -05:00
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/* Added at libpng-1.2.9 */
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/* Moved to pngpriv.h at libpng-1.5.0 */
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/* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure"
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2010-04-16 23:12:51 -04:00
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* script. We may need it here to get the correct configuration on things
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* like limits.
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2010-03-09 17:45:06 -05:00
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*/
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#ifdef PNG_CONFIGURE_LIBPNG
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# ifdef HAVE_CONFIG_H
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# include "config.h"
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# endif
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#endif
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2010-04-16 23:12:51 -04:00
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/* Moved to pngpriv.h at libpng-1.5.0 */
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/* If you are running on a machine where you cannot allocate more
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* than 64K of memory at once, uncomment this. While libpng will not
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* normally need that much memory in a chunk (unless you load up a very
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* large file), zlib needs to know how big of a chunk it can use, and
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* libpng thus makes sure to check any memory allocation to verify it
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* will fit into memory.
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*
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* zlib provides 'MAXSEG_64K' which, if defined, indicates the
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* same limit and pngconf.h (already included) sets the limit
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* if certain operating systems are detected.
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*/
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#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
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# define PNG_MAX_MALLOC_64K
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#endif
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/* Moved to pngpriv.h at libpng-1.5.0 */
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/* Feature support: in 1.4 this was in pngconf.h, but these
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* features have no affect on the libpng API. Add library
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* only features to the end of this list. Add features that
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* affect the API to scipts/config.dfn using png_on or png_off
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* as determined by the default and update scripts/config.std
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*/
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/* Added at libpng version 1.4.0 */
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#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
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# define PNG_WARNINGS_SUPPORTED
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#endif
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2010-04-17 19:03:02 -04:00
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/* If warnings or errors are turned off the code is disabled
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* or redirected here.
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*/
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#ifndef PNG_WARNINGS_SUPPORTED
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# define png_warning(s1,s2) ((void)0)
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# define png_chunk_warning(s1,s2) ((void)0)
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#endif
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#ifndef PNG_ERROR_TEXT_SUPPORTED
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# define png_error(s1,s2) png_err(s1)
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# define png_chunk_error(s1,s2) png_err(s1)
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#endif
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2010-04-16 23:12:51 -04:00
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/* Added at libpng version 1.4.0 */
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#if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
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# define PNG_CHECK_cHRM_SUPPORTED
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#endif
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/* Added at libpng version 1.4.0 */
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#if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED)
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# define PNG_ALIGNED_MEMORY_SUPPORTED
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#endif
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/* Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING
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* See png[wr]util.c
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*/
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#if !defined(PNG_NO_POINTER_INDEXING) && \
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!defined(PNG_POINTER_INDEXING_SUPPORTED)
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# define PNG_POINTER_INDEXING_SUPPORTED
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#endif
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/* Other defines for things like memory and the like can go here. */
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2010-04-17 09:17:51 -04:00
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/* This controls how fine the quantizing gets. As this allocates
|
2010-04-16 23:12:51 -04:00
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* a largish chunk of memory (32K), those who are not as concerned
|
2010-04-17 09:17:51 -04:00
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* with quantizing quality can decrease some or all of these.
|
2010-04-16 23:12:51 -04:00
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*/
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2010-04-17 09:17:51 -04:00
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#ifndef PNG_QUANTIZE_RED_BITS
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# define PNG_QUANTIZE_RED_BITS 5
|
2010-04-16 23:12:51 -04:00
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#endif
|
2010-04-17 09:17:51 -04:00
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#ifndef PNG_QUANTIZE_GREEN_BITS
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# define PNG_QUANTIZE_GREEN_BITS 5
|
2010-04-16 23:12:51 -04:00
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#endif
|
2010-04-17 09:17:51 -04:00
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#ifndef PNG_QUANTIZE_BLUE_BITS
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# define PNG_QUANTIZE_BLUE_BITS 5
|
2010-04-16 23:12:51 -04:00
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#endif
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/* This controls how fine the gamma correction becomes when you
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* are only interested in 8 bits anyway. Increasing this value
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* results in more memory being used, and more pow() functions
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* being called to fill in the gamma tables. Don't set this value
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* less then 8, and even that may not work (I haven't tested it).
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*/
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#ifndef PNG_MAX_GAMMA_8
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# define PNG_MAX_GAMMA_8 11
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#endif
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/* This controls how much a difference in gamma we can tolerate before
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* we actually start doing gamma conversion.
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*/
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#ifndef PNG_GAMMA_THRESHOLD
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# define PNG_GAMMA_THRESHOLD 0.05
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#endif
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2010-07-12 07:29:17 -04:00
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#ifndef PNG_EXTERN
|
2006-08-19 14:59:24 -04:00
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/* The functions exported by PNG_EXTERN are internal functions, which
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2006-04-20 08:20:46 -04:00
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* aren't usually used outside the library (as far as I know), so it is
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2006-08-19 14:59:24 -04:00
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* debatable if they should be exported at all. In the future, when it
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* is possible to have run-time registry of chunk-handling functions,
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* some of these will be made available again.
|
2010-07-12 07:29:17 -04:00
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# define PNG_EXTERN extern
|
2006-04-20 08:20:46 -04:00
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*/
|
2010-07-12 07:29:17 -04:00
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# define PNG_EXTERN
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#endif
|
2006-04-20 08:20:46 -04:00
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/* Other defines specific to compilers can go here. Try to keep
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* them inside an appropriate ifdef/endif pair for portability.
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*/
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|
2009-09-23 11:24:53 -04:00
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#ifdef PNG_FLOATING_POINT_SUPPORTED
|
2010-03-14 10:15:49 -04:00
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# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
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defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
|
2006-04-20 08:20:46 -04:00
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|
/* We need to check that <math.h> hasn't already been included earlier
|
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|
* as it seems it doesn't agree with <fp.h>, yet we should really use
|
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* <fp.h> if possible.
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*/
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# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
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# include <fp.h>
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# endif
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# else
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# include <math.h>
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# endif
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# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
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/* Amiga SAS/C: We must include builtin FPU functions when compiling using
|
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* MATH=68881
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*/
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# include <m68881.h>
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# endif
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#endif
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/* This provides the non-ANSI (far) memory allocation routines. */
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#if defined(__TURBOC__) && defined(__MSDOS__)
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# include <mem.h>
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# include <alloc.h>
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#endif
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#if defined(WIN32) || defined(_Windows) || defined(_WINDOWS) || \
|
2009-09-20 08:27:34 -04:00
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defined(_WIN32) || defined(__WIN32__)
|
2006-04-20 08:20:46 -04:00
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# include <windows.h> /* defines _WINDOWS_ macro */
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/* I have no idea why is this necessary... */
|
2009-09-23 11:24:53 -04:00
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# ifdef _MSC_VER
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2006-04-20 08:20:46 -04:00
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# include <malloc.h>
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# endif
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#endif
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|
2010-04-16 23:12:51 -04:00
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/* This is the size of the compression buffer, and thus the size of
|
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* an IDAT chunk. Make this whatever size you feel is best for your
|
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* machine. One of these will be allocated per png_struct. When this
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* is full, it writes the data to the disk, and does some other
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* calculations. Making this an extremely small size will slow
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* the library down, but you may want to experiment to determine
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* where it becomes significant, if you are concerned with memory
|
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* usage. Note that zlib allocates at least 32Kb also. For readers,
|
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|
* this describes the size of the buffer available to read the data in.
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|
* Unless this gets smaller than the size of a row (compressed),
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* it should not make much difference how big this is.
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*/
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#ifndef PNG_ZBUF_SIZE
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# define PNG_ZBUF_SIZE 8192
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#endif
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/* Just a little check that someone hasn't tried to define something
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* contradictory.
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*/
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#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
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# undef PNG_ZBUF_SIZE
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# define PNG_ZBUF_SIZE 65536L
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#endif
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|
2006-04-20 08:20:46 -04:00
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/* Various modes of operation. Note that after an init, mode is set to
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* zero automatically when the structure is created.
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*/
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#define PNG_HAVE_IHDR 0x01
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#define PNG_HAVE_PLTE 0x02
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#define PNG_HAVE_IDAT 0x04
|
2006-06-16 08:52:03 -04:00
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#define PNG_AFTER_IDAT 0x08 /* Have complete zlib datastream */
|
2006-04-20 08:20:46 -04:00
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#define PNG_HAVE_IEND 0x10
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#define PNG_HAVE_gAMA 0x20
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#define PNG_HAVE_cHRM 0x40
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#define PNG_HAVE_sRGB 0x80
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#define PNG_HAVE_CHUNK_HEADER 0x100
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#define PNG_WROTE_tIME 0x200
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#define PNG_WROTE_INFO_BEFORE_PLTE 0x400
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#define PNG_BACKGROUND_IS_GRAY 0x800
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#define PNG_HAVE_PNG_SIGNATURE 0x1000
|
2006-06-16 08:52:03 -04:00
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#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */
|
2006-04-20 08:20:46 -04:00
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|
2009-06-15 22:57:39 -04:00
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/* Flags for the transformations the PNG library does on the image data */
|
2008-08-14 14:44:49 -04:00
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#define PNG_BGR 0x0001
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#define PNG_INTERLACE 0x0002
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#define PNG_PACK 0x0004
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#define PNG_SHIFT 0x0008
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|
#define PNG_SWAP_BYTES 0x0010
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|
#define PNG_INVERT_MONO 0x0020
|
2010-04-16 20:27:08 -04:00
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|
#define PNG_QUANTIZE 0x0040
|
2008-08-14 14:44:49 -04:00
|
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|
#define PNG_BACKGROUND 0x0080
|
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|
#define PNG_BACKGROUND_EXPAND 0x0100
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|
/* 0x0200 unused */
|
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|
#define PNG_16_TO_8 0x0400
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|
#define PNG_RGBA 0x0800
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|
#define PNG_EXPAND 0x1000
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|
#define PNG_GAMMA 0x2000
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|
#define PNG_GRAY_TO_RGB 0x4000
|
|
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|
#define PNG_FILLER 0x8000L
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|
#define PNG_PACKSWAP 0x10000L
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|
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|
#define PNG_SWAP_ALPHA 0x20000L
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|
#define PNG_STRIP_ALPHA 0x40000L
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|
#define PNG_INVERT_ALPHA 0x80000L
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|
|
|
#define PNG_USER_TRANSFORM 0x100000L
|
|
|
|
#define PNG_RGB_TO_GRAY_ERR 0x200000L
|
|
|
|
#define PNG_RGB_TO_GRAY_WARN 0x400000L
|
|
|
|
#define PNG_RGB_TO_GRAY 0x600000L /* two bits, RGB_TO_GRAY_ERR|WARN */
|
|
|
|
/* 0x800000L Unused */
|
|
|
|
#define PNG_ADD_ALPHA 0x1000000L /* Added to libpng-1.2.7 */
|
|
|
|
#define PNG_EXPAND_tRNS 0x2000000L /* Added to libpng-1.2.9 */
|
2009-11-27 01:24:42 -05:00
|
|
|
/* 0x4000000L unused */
|
2006-04-20 08:20:46 -04:00
|
|
|
/* 0x8000000L unused */
|
|
|
|
/* 0x10000000L unused */
|
|
|
|
/* 0x20000000L unused */
|
|
|
|
/* 0x40000000L unused */
|
|
|
|
|
2009-06-15 22:57:39 -04:00
|
|
|
/* Flags for png_create_struct */
|
2006-04-20 08:20:46 -04:00
|
|
|
#define PNG_STRUCT_PNG 0x0001
|
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|
|
#define PNG_STRUCT_INFO 0x0002
|
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|
|
/* Scaling factor for filter heuristic weighting calculations */
|
|
|
|
#define PNG_WEIGHT_SHIFT 8
|
|
|
|
#define PNG_WEIGHT_FACTOR (1<<(PNG_WEIGHT_SHIFT))
|
|
|
|
#define PNG_COST_SHIFT 3
|
|
|
|
#define PNG_COST_FACTOR (1<<(PNG_COST_SHIFT))
|
|
|
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|
2009-06-15 22:57:39 -04:00
|
|
|
/* Flags for the png_ptr->flags rather than declaring a byte for each one */
|
2006-04-20 08:20:46 -04:00
|
|
|
#define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001
|
|
|
|
#define PNG_FLAG_ZLIB_CUSTOM_LEVEL 0x0002
|
|
|
|
#define PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL 0x0004
|
|
|
|
#define PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS 0x0008
|
|
|
|
#define PNG_FLAG_ZLIB_CUSTOM_METHOD 0x0010
|
|
|
|
#define PNG_FLAG_ZLIB_FINISHED 0x0020
|
|
|
|
#define PNG_FLAG_ROW_INIT 0x0040
|
|
|
|
#define PNG_FLAG_FILLER_AFTER 0x0080
|
|
|
|
#define PNG_FLAG_CRC_ANCILLARY_USE 0x0100
|
|
|
|
#define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200
|
|
|
|
#define PNG_FLAG_CRC_CRITICAL_USE 0x0400
|
|
|
|
#define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800
|
2009-09-20 08:27:34 -04:00
|
|
|
/* 0x1000 unused */
|
|
|
|
/* 0x2000 unused */
|
|
|
|
/* 0x4000 unused */
|
2006-04-20 08:20:46 -04:00
|
|
|
#define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000L
|
|
|
|
#define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000L
|
|
|
|
#define PNG_FLAG_LIBRARY_MISMATCH 0x20000L
|
|
|
|
#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000L
|
|
|
|
#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000L
|
|
|
|
#define PNG_FLAG_MALLOC_NULL_MEM_OK 0x100000L
|
|
|
|
#define PNG_FLAG_ADD_ALPHA 0x200000L /* Added to libpng-1.2.8 */
|
|
|
|
#define PNG_FLAG_STRIP_ALPHA 0x400000L /* Added to libpng-1.2.8 */
|
2006-06-16 08:52:03 -04:00
|
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|
#define PNG_FLAG_BENIGN_ERRORS_WARN 0x800000L /* Added to libpng-1.4.0 */
|
2006-04-20 08:20:46 -04:00
|
|
|
/* 0x1000000L unused */
|
|
|
|
/* 0x2000000L unused */
|
|
|
|
/* 0x4000000L unused */
|
|
|
|
/* 0x8000000L unused */
|
|
|
|
/* 0x10000000L unused */
|
|
|
|
/* 0x20000000L unused */
|
|
|
|
/* 0x40000000L unused */
|
|
|
|
|
|
|
|
#define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \
|
|
|
|
PNG_FLAG_CRC_ANCILLARY_NOWARN)
|
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|
|
|
|
#define PNG_FLAG_CRC_CRITICAL_MASK (PNG_FLAG_CRC_CRITICAL_USE | \
|
|
|
|
PNG_FLAG_CRC_CRITICAL_IGNORE)
|
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|
|
|
|
|
#define PNG_FLAG_CRC_MASK (PNG_FLAG_CRC_ANCILLARY_MASK | \
|
|
|
|
PNG_FLAG_CRC_CRITICAL_MASK)
|
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|
|
|
2009-06-15 22:57:39 -04:00
|
|
|
/* Save typing and make code easier to understand */
|
2006-04-20 08:20:46 -04:00
|
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|
|
#define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \
|
|
|
|
abs((int)((c1).green) - (int)((c2).green)) + \
|
|
|
|
abs((int)((c1).blue) - (int)((c2).blue)))
|
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|
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|
|
|
|
/* Added to libpng-1.2.6 JB */
|
|
|
|
#define PNG_ROWBYTES(pixel_bits, width) \
|
|
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|
((pixel_bits) >= 8 ? \
|
2006-08-19 14:59:24 -04:00
|
|
|
((png_size_t)(width) * (((png_size_t)(pixel_bits)) >> 3)) : \
|
|
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|
(( ((png_size_t)(width) * ((png_size_t)(pixel_bits))) + 7) >> 3) )
|
2006-04-20 08:20:46 -04:00
|
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|
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|
|
/* PNG_OUT_OF_RANGE returns true if value is outside the range
|
2009-09-20 14:37:50 -04:00
|
|
|
* ideal-delta..ideal+delta. Each argument is evaluated twice.
|
|
|
|
* "ideal" and "delta" should be constants, normally simple
|
|
|
|
* integers, "value" a variable. Added to libpng-1.2.6 JB
|
|
|
|
*/
|
2006-04-20 08:20:46 -04:00
|
|
|
#define PNG_OUT_OF_RANGE(value, ideal, delta) \
|
2010-03-06 12:39:29 -05:00
|
|
|
( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) )
|
2006-04-20 08:20:46 -04:00
|
|
|
|
|
|
|
/* Constant strings for known chunk types. If you need to add a chunk,
|
2009-09-20 14:37:50 -04:00
|
|
|
* define the name here, and add an invocation of the macro wherever it's
|
|
|
|
* needed.
|
2006-04-20 08:20:46 -04:00
|
|
|
*/
|
2009-09-20 14:37:50 -04:00
|
|
|
#define PNG_IHDR PNG_CONST png_byte png_IHDR[5] = { 73, 72, 68, 82, '\0'}
|
|
|
|
#define PNG_IDAT PNG_CONST png_byte png_IDAT[5] = { 73, 68, 65, 84, '\0'}
|
|
|
|
#define PNG_IEND PNG_CONST png_byte png_IEND[5] = { 73, 69, 78, 68, '\0'}
|
|
|
|
#define PNG_PLTE PNG_CONST png_byte png_PLTE[5] = { 80, 76, 84, 69, '\0'}
|
|
|
|
#define PNG_bKGD PNG_CONST png_byte png_bKGD[5] = { 98, 75, 71, 68, '\0'}
|
|
|
|
#define PNG_cHRM PNG_CONST png_byte png_cHRM[5] = { 99, 72, 82, 77, '\0'}
|
|
|
|
#define PNG_gAMA PNG_CONST png_byte png_gAMA[5] = {103, 65, 77, 65, '\0'}
|
|
|
|
#define PNG_hIST PNG_CONST png_byte png_hIST[5] = {104, 73, 83, 84, '\0'}
|
|
|
|
#define PNG_iCCP PNG_CONST png_byte png_iCCP[5] = {105, 67, 67, 80, '\0'}
|
|
|
|
#define PNG_iTXt PNG_CONST png_byte png_iTXt[5] = {105, 84, 88, 116, '\0'}
|
|
|
|
#define PNG_oFFs PNG_CONST png_byte png_oFFs[5] = {111, 70, 70, 115, '\0'}
|
|
|
|
#define PNG_pCAL PNG_CONST png_byte png_pCAL[5] = {112, 67, 65, 76, '\0'}
|
|
|
|
#define PNG_sCAL PNG_CONST png_byte png_sCAL[5] = {115, 67, 65, 76, '\0'}
|
|
|
|
#define PNG_pHYs PNG_CONST png_byte png_pHYs[5] = {112, 72, 89, 115, '\0'}
|
|
|
|
#define PNG_sBIT PNG_CONST png_byte png_sBIT[5] = {115, 66, 73, 84, '\0'}
|
|
|
|
#define PNG_sPLT PNG_CONST png_byte png_sPLT[5] = {115, 80, 76, 84, '\0'}
|
|
|
|
#define PNG_sRGB PNG_CONST png_byte png_sRGB[5] = {115, 82, 71, 66, '\0'}
|
|
|
|
#define PNG_sTER PNG_CONST png_byte png_sTER[5] = {115, 84, 69, 82, '\0'}
|
|
|
|
#define PNG_tEXt PNG_CONST png_byte png_tEXt[5] = {116, 69, 88, 116, '\0'}
|
|
|
|
#define PNG_tIME PNG_CONST png_byte png_tIME[5] = {116, 73, 77, 69, '\0'}
|
|
|
|
#define PNG_tRNS PNG_CONST png_byte png_tRNS[5] = {116, 82, 78, 83, '\0'}
|
|
|
|
#define PNG_zTXt PNG_CONST png_byte png_zTXt[5] = {122, 84, 88, 116, '\0'}
|
2006-04-20 08:20:46 -04:00
|
|
|
|
|
|
|
|
|
|
|
/* Inhibit C++ name-mangling for libpng functions but not for system calls. */
|
|
|
|
#ifdef __cplusplus
|
|
|
|
extern "C" {
|
|
|
|
#endif /* __cplusplus */
|
|
|
|
|
|
|
|
/* These functions are used internally in the code. They generally
|
|
|
|
* shouldn't be used unless you are writing code to add or replace some
|
|
|
|
* functionality in libpng. More information about most functions can
|
|
|
|
* be found in the files where the functions are located.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* Allocate memory for an internal libpng struct */
|
|
|
|
PNG_EXTERN png_voidp png_create_struct PNGARG((int type));
|
|
|
|
|
|
|
|
/* Free memory from internal libpng struct */
|
|
|
|
PNG_EXTERN void png_destroy_struct PNGARG((png_voidp struct_ptr));
|
|
|
|
|
|
|
|
PNG_EXTERN png_voidp png_create_struct_2 PNGARG((int type, png_malloc_ptr
|
2010-03-06 12:39:29 -05:00
|
|
|
malloc_fn, png_voidp mem_ptr));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_destroy_struct_2 PNGARG((png_voidp struct_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_free_ptr free_fn, png_voidp mem_ptr));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
|
|
|
/* Free any memory that info_ptr points to and reset struct. */
|
|
|
|
PNG_EXTERN void png_info_destroy PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_infop info_ptr));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
2006-08-19 14:59:24 -04:00
|
|
|
/* Function to allocate memory for zlib. PNGAPI is disallowed. */
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN voidpf png_zalloc PNGARG((voidpf png_ptr, uInt items, uInt size));
|
|
|
|
|
2006-08-19 14:59:24 -04:00
|
|
|
/* Function to free memory for zlib. PNGAPI is disallowed. */
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr));
|
|
|
|
|
2010-03-12 18:36:53 -05:00
|
|
|
/* Next four functions are used internally as callbacks. PNGCBAPI is required
|
|
|
|
* but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3, changed to PNGCBAPI
|
|
|
|
* at 1.5.0
|
|
|
|
*/
|
2006-04-20 08:20:46 -04:00
|
|
|
|
2010-03-12 18:36:53 -05:00
|
|
|
PNG_EXTERN void PNGCBAPI png_default_read_data PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep data, png_size_t length));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
|
|
|
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
|
2010-03-12 18:36:53 -05:00
|
|
|
PNG_EXTERN void PNGCBAPI png_push_fill_buffer PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep buffer, png_size_t length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2010-03-12 18:36:53 -05:00
|
|
|
PNG_EXTERN void PNGCBAPI png_default_write_data PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep data, png_size_t length));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
2009-08-31 09:42:02 -04:00
|
|
|
#ifdef PNG_WRITE_FLUSH_SUPPORTED
|
2010-03-06 11:45:55 -05:00
|
|
|
# ifdef PNG_STDIO_SUPPORTED
|
2010-03-12 18:36:53 -05:00
|
|
|
PNG_EXTERN void PNGCBAPI png_default_flush PNGARG((png_structp png_ptr));
|
2010-03-06 11:45:55 -05:00
|
|
|
# endif
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Reset the CRC variable */
|
|
|
|
PNG_EXTERN void png_reset_crc PNGARG((png_structp png_ptr));
|
|
|
|
|
2006-08-19 14:59:24 -04:00
|
|
|
/* Write the "data" buffer to whatever output you are using */
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_write_data PNGARG((png_structp png_ptr, png_bytep data,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_size_t length));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
2006-08-19 14:59:24 -04:00
|
|
|
/* Read the chunk header (length + type name) */
|
|
|
|
PNG_EXTERN png_uint_32 png_read_chunk_header PNGARG((png_structp png_ptr));
|
|
|
|
|
2006-04-20 08:20:46 -04:00
|
|
|
/* Read data from whatever input you are using into the "data" buffer */
|
|
|
|
PNG_EXTERN void png_read_data PNGARG((png_structp png_ptr, png_bytep data,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_size_t length));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
|
|
|
/* Read bytes into buf, and update png_ptr->crc */
|
|
|
|
PNG_EXTERN void png_crc_read PNGARG((png_structp png_ptr, png_bytep buf,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_size_t length));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
|
|
|
/* Decompress data in a chunk that uses compression */
|
|
|
|
#if defined(PNG_zTXt_SUPPORTED) || defined(PNG_iTXt_SUPPORTED) || \
|
|
|
|
defined(PNG_iCCP_SUPPORTED) || defined(PNG_sPLT_SUPPORTED)
|
2008-07-25 09:51:18 -04:00
|
|
|
PNG_EXTERN void png_decompress_chunk PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
int comp_type, png_size_t chunklength, png_size_t prefix_length,
|
|
|
|
png_size_t *data_length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */
|
|
|
|
PNG_EXTERN int png_crc_finish PNGARG((png_structp png_ptr, png_uint_32 skip));
|
|
|
|
|
|
|
|
/* Read the CRC from the file and compare it to the libpng calculated CRC */
|
|
|
|
PNG_EXTERN int png_crc_error PNGARG((png_structp png_ptr));
|
|
|
|
|
|
|
|
/* Calculate the CRC over a section of data. Note that we are only
|
|
|
|
* passing a maximum of 64K on systems that have this as a memory limit,
|
|
|
|
* since this is the maximum buffer size we can specify.
|
|
|
|
*/
|
|
|
|
PNG_EXTERN void png_calculate_crc PNGARG((png_structp png_ptr, png_bytep ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_size_t length));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_WRITE_FLUSH_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_flush PNGARG((png_structp png_ptr));
|
|
|
|
#endif
|
|
|
|
|
2009-06-15 22:57:39 -04:00
|
|
|
/* Write various chunks */
|
2006-04-20 08:20:46 -04:00
|
|
|
|
|
|
|
/* Write the IHDR chunk, and update the png_struct with the necessary
|
|
|
|
* information.
|
|
|
|
*/
|
|
|
|
PNG_EXTERN void png_write_IHDR PNGARG((png_structp png_ptr, png_uint_32 width,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 height,
|
|
|
|
int bit_depth, int color_type, int compression_method, int filter_method,
|
|
|
|
int interlace_method));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
|
|
|
PNG_EXTERN void png_write_PLTE PNGARG((png_structp png_ptr, png_colorp palette,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 num_pal));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
|
|
|
PNG_EXTERN void png_write_IDAT PNGARG((png_structp png_ptr, png_bytep data,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_size_t length));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
|
|
|
PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr));
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_WRITE_gAMA_SUPPORTED
|
2010-03-06 11:45:55 -05:00
|
|
|
# ifdef PNG_FLOATING_POINT_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_write_gAMA PNGARG((png_structp png_ptr, double file_gamma));
|
2010-03-06 11:45:55 -05:00
|
|
|
# endif
|
|
|
|
# ifdef PNG_FIXED_POINT_SUPPORTED
|
2010-02-07 19:08:50 -05:00
|
|
|
PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr,
|
|
|
|
png_fixed_point file_gamma));
|
2010-03-06 11:45:55 -05:00
|
|
|
# endif
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_WRITE_sBIT_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_write_sBIT PNGARG((png_structp png_ptr, png_color_8p sbit,
|
2010-03-06 12:39:29 -05:00
|
|
|
int color_type));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_WRITE_cHRM_SUPPORTED
|
2010-03-06 11:45:55 -05:00
|
|
|
# ifdef PNG_FLOATING_POINT_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_write_cHRM PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
double white_x, double white_y,
|
|
|
|
double red_x, double red_y, double green_x, double green_y,
|
|
|
|
double blue_x, double blue_y));
|
2010-03-06 11:45:55 -05:00
|
|
|
# endif
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_write_cHRM_fixed PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_fixed_point int_white_x, png_fixed_point int_white_y,
|
|
|
|
png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
|
|
|
|
int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
|
|
|
|
png_fixed_point int_blue_y));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_WRITE_sRGB_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_write_sRGB PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
int intent));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_WRITE_iCCP_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_charp name, int compression_type,
|
|
|
|
png_charp profile, int proflen));
|
2006-04-20 08:20:46 -04:00
|
|
|
/* Note to maintainer: profile should be png_bytep */
|
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_WRITE_sPLT_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_write_sPLT PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_sPLT_tp palette));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_WRITE_tRNS_SUPPORTED
|
2006-04-20 08:20:46 -04:00
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PNG_EXTERN void png_write_tRNS PNGARG((png_structp png_ptr, png_bytep trans,
|
2010-03-06 12:39:29 -05:00
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png_color_16p values, int number, int color_type));
|
2006-04-20 08:20:46 -04:00
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|
#endif
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2009-09-23 11:24:53 -04:00
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#ifdef PNG_WRITE_bKGD_SUPPORTED
|
2006-04-20 08:20:46 -04:00
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PNG_EXTERN void png_write_bKGD PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
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png_color_16p values, int color_type));
|
2006-04-20 08:20:46 -04:00
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|
#endif
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2009-09-23 11:24:53 -04:00
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#ifdef PNG_WRITE_hIST_SUPPORTED
|
2006-04-20 08:20:46 -04:00
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PNG_EXTERN void png_write_hIST PNGARG((png_structp png_ptr, png_uint_16p hist,
|
2010-03-06 12:39:29 -05:00
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int num_hist));
|
2006-04-20 08:20:46 -04:00
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#endif
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#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) || \
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defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED)
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PNG_EXTERN png_size_t png_check_keyword PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
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png_charp key, png_charpp new_key));
|
2006-04-20 08:20:46 -04:00
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#endif
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2009-09-23 11:24:53 -04:00
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#ifdef PNG_WRITE_tEXt_SUPPORTED
|
2006-04-20 08:20:46 -04:00
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PNG_EXTERN void png_write_tEXt PNGARG((png_structp png_ptr, png_charp key,
|
2010-03-06 12:39:29 -05:00
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png_charp text, png_size_t text_len));
|
2006-04-20 08:20:46 -04:00
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|
#endif
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2009-09-23 11:24:53 -04:00
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#ifdef PNG_WRITE_zTXt_SUPPORTED
|
2006-04-20 08:20:46 -04:00
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PNG_EXTERN void png_write_zTXt PNGARG((png_structp png_ptr, png_charp key,
|
2010-03-06 12:39:29 -05:00
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png_charp text, png_size_t text_len, int compression));
|
2006-04-20 08:20:46 -04:00
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|
#endif
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|
2009-09-23 11:24:53 -04:00
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#ifdef PNG_WRITE_iTXt_SUPPORTED
|
2006-04-20 08:20:46 -04:00
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PNG_EXTERN void png_write_iTXt PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
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|
int compression, png_charp key, png_charp lang, png_charp lang_key,
|
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png_charp text));
|
2006-04-20 08:20:46 -04:00
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#endif
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2009-09-23 11:24:53 -04:00
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#ifdef PNG_TEXT_SUPPORTED /* Added at version 1.0.14 and 1.2.4 */
|
2006-04-20 08:20:46 -04:00
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PNG_EXTERN int png_set_text_2 PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
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png_infop info_ptr, png_textp text_ptr, int num_text));
|
2006-04-20 08:20:46 -04:00
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|
#endif
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2009-09-23 11:24:53 -04:00
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#ifdef PNG_WRITE_oFFs_SUPPORTED
|
2006-04-20 08:20:46 -04:00
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PNG_EXTERN void png_write_oFFs PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
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|
png_int_32 x_offset, png_int_32 y_offset, int unit_type));
|
2006-04-20 08:20:46 -04:00
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|
#endif
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|
2009-09-23 11:24:53 -04:00
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#ifdef PNG_WRITE_pCAL_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
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PNG_EXTERN void png_write_pCAL PNGARG((png_structp png_ptr, png_charp purpose,
|
2010-03-06 12:39:29 -05:00
|
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|
png_int_32 X0, png_int_32 X1, int type, int nparams,
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|
png_charp units, png_charpp params));
|
2006-04-20 08:20:46 -04:00
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|
#endif
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|
2009-09-23 11:24:53 -04:00
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#ifdef PNG_WRITE_pHYs_SUPPORTED
|
2006-04-20 08:20:46 -04:00
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|
PNG_EXTERN void png_write_pHYs PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
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|
png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit,
|
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|
int unit_type));
|
2006-04-20 08:20:46 -04:00
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|
#endif
|
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|
2009-09-23 11:24:53 -04:00
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#ifdef PNG_WRITE_tIME_SUPPORTED
|
2006-04-20 08:20:46 -04:00
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|
PNG_EXTERN void png_write_tIME PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
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|
png_timep mod_time));
|
2006-04-20 08:20:46 -04:00
|
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|
#endif
|
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|
2009-09-23 11:24:53 -04:00
|
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|
#ifdef PNG_WRITE_sCAL_SUPPORTED
|
2010-03-06 11:45:55 -05:00
|
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|
# if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
|
2006-04-20 08:20:46 -04:00
|
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|
PNG_EXTERN void png_write_sCAL PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
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|
int unit, double width, double height));
|
2010-03-06 11:45:55 -05:00
|
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|
# else
|
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|
# ifdef PNG_FIXED_POINT_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
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|
PNG_EXTERN void png_write_sCAL_s PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
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|
int unit, png_charp width, png_charp height));
|
2010-03-06 11:45:55 -05:00
|
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|
# endif
|
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|
# endif
|
2006-04-20 08:20:46 -04:00
|
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|
#endif
|
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|
/* Called when finished processing a row of data */
|
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|
PNG_EXTERN void png_write_finish_row PNGARG((png_structp png_ptr));
|
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|
/* Internal use only. Called before first row of data */
|
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|
PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr));
|
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|
2009-09-23 11:24:53 -04:00
|
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|
#ifdef PNG_READ_GAMMA_SUPPORTED
|
2009-12-13 09:14:40 -05:00
|
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|
PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
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|
png_byte bit_depth));
|
2006-04-20 08:20:46 -04:00
|
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|
#endif
|
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|
|
|
2009-06-15 22:57:39 -04:00
|
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|
/* Combine a row of data, dealing with alpha, etc. if requested */
|
2006-04-20 08:20:46 -04:00
|
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|
PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row,
|
2010-03-06 12:39:29 -05:00
|
|
|
int mask));
|
2006-04-20 08:20:46 -04:00
|
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|
|
2009-09-23 11:24:53 -04:00
|
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|
#ifdef PNG_READ_INTERLACING_SUPPORTED
|
2009-06-15 22:57:39 -04:00
|
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|
/* Expand an interlaced row */
|
2006-04-20 08:20:46 -04:00
|
|
|
/* OLD pre-1.0.9 interface:
|
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|
|
PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep row, int pass, png_uint_32 transformations));
|
2006-04-20 08:20:46 -04:00
|
|
|
*/
|
|
|
|
PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr));
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
|
2009-06-15 22:57:39 -04:00
|
|
|
/* Grab pixels out of a row for an interlaced pass */
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep row, int pass));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-06-15 22:57:39 -04:00
|
|
|
/* Unfilter a row */
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_read_filter_row PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_row_infop row_info, png_bytep row, png_bytep prev_row, int filter));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
|
|
|
/* Choose the best filter to use and filter the row data */
|
|
|
|
PNG_EXTERN void png_write_find_filter PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_row_infop row_info));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
|
|
|
/* Write out the filtered row. */
|
|
|
|
PNG_EXTERN void png_write_filtered_row PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep filtered_row));
|
2009-06-15 22:57:39 -04:00
|
|
|
/* Finish a row while reading, dealing with interlacing passes, etc. */
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_read_finish_row PNGARG((png_structp png_ptr));
|
|
|
|
|
2009-06-15 22:57:39 -04:00
|
|
|
/* Initialize the row buffers, etc. */
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_read_start_row PNGARG((png_structp png_ptr));
|
2009-06-15 22:57:39 -04:00
|
|
|
/* Optional call to update the users info structure */
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_infop info_ptr));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
2009-06-15 22:57:39 -04:00
|
|
|
/* These are the functions that do the transformations */
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_FILLER_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep row, png_uint_32 filler, png_uint_32 flags));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_read_swap_alpha PNGARG((png_row_infop row_info,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep row));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_write_swap_alpha PNGARG((png_row_infop row_info,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep row));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_read_invert_alpha PNGARG((png_row_infop row_info,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep row));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_write_invert_alpha PNGARG((png_row_infop row_info,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep row));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
|
|
|
#if defined(PNG_WRITE_FILLER_SUPPORTED) || \
|
|
|
|
defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
|
|
|
|
PNG_EXTERN void png_do_strip_filler PNGARG((png_row_infop row_info,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep row, png_uint_32 flags));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
|
|
|
#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
|
|
|
|
PNG_EXTERN void png_do_swap PNGARG((png_row_infop row_info, png_bytep row));
|
|
|
|
#endif
|
|
|
|
|
2010-02-07 19:08:50 -05:00
|
|
|
#if defined(PNG_READ_PACKSWAP_SUPPORTED) || \
|
|
|
|
defined(PNG_WRITE_PACKSWAP_SUPPORTED)
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_packswap PNGARG((png_row_infop row_info, png_bytep row));
|
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN int png_do_rgb_to_gray PNGARG((png_structp png_ptr, png_row_infop
|
2010-03-06 12:39:29 -05:00
|
|
|
row_info, png_bytep row));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_gray_to_rgb PNGARG((png_row_infop row_info,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep row));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_PACK_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_unpack PNGARG((png_row_infop row_info, png_bytep row));
|
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_SHIFT_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_unshift PNGARG((png_row_infop row_info, png_bytep row,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_color_8p sig_bits));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
|
|
|
#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
|
|
|
|
PNG_EXTERN void png_do_invert PNGARG((png_row_infop row_info, png_bytep row));
|
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_16_TO_8_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_chop PNGARG((png_row_infop row_info, png_bytep row));
|
|
|
|
#endif
|
|
|
|
|
2010-04-16 20:27:08 -04:00
|
|
|
#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));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
# ifdef PNG_CORRECT_PALETTE_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_correct_palette PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_colorp palette, int num_palette));
|
2006-04-20 08:20:46 -04:00
|
|
|
# endif
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
|
|
|
|
PNG_EXTERN void png_do_bgr PNGARG((png_row_infop row_info, png_bytep row));
|
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_WRITE_PACK_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_pack PNGARG((png_row_infop row_info,
|
|
|
|
png_bytep row, png_uint_32 bit_depth));
|
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_WRITE_SHIFT_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_shift PNGARG((png_row_infop row_info, png_bytep row,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_color_8p bit_depth));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_BACKGROUND_SUPPORTED
|
2010-03-06 11:45:55 -05:00
|
|
|
# ifdef PNG_READ_GAMMA_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_color_16p trans_color, png_color_16p background,
|
|
|
|
png_color_16p background_1,
|
|
|
|
png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1,
|
|
|
|
png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1,
|
|
|
|
png_uint_16pp gamma_16_to_1, int gamma_shift));
|
2010-03-06 11:45:55 -05:00
|
|
|
# else
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_color_16p trans_color, png_color_16p background));
|
2010-03-06 11:45:55 -05:00
|
|
|
# endif
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_GAMMA_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_gamma PNGARG((png_row_infop row_info, png_bytep row,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep gamma_table, png_uint_16pp gamma_16_table,
|
|
|
|
int gamma_shift));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_EXPAND_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_expand_palette PNGARG((png_row_infop row_info,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep row, png_colorp palette, png_bytep trans, int num_trans));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_expand PNGARG((png_row_infop row_info,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep row, png_color_16p trans_value));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
|
|
|
/* The following decodes the appropriate chunks, and does error correction,
|
|
|
|
* then calls the appropriate callback for the chunk if it is valid.
|
|
|
|
*/
|
|
|
|
|
2009-06-15 22:57:39 -04:00
|
|
|
/* Decode the IHDR chunk */
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_IHDR PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_PLTE PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_IEND PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_bKGD_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_bKGD PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_cHRM_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_cHRM PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_gAMA_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_gAMA PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_hIST_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_hIST PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_iCCP_SUPPORTED
|
2010-07-06 08:40:47 -04:00
|
|
|
PNG_EXTERN void png_handle_iCCP PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif /* PNG_READ_iCCP_SUPPORTED */
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_iTXt_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_iTXt PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_oFFs_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_oFFs PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_pCAL_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_pCAL PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_pHYs_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_pHYs PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_sBIT_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_sBIT PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_sCAL_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_sCAL PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_sPLT_SUPPORTED
|
2010-07-06 08:40:47 -04:00
|
|
|
PNG_EXTERN void png_handle_sPLT PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif /* PNG_READ_sPLT_SUPPORTED */
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_sRGB_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_sRGB PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_tEXt_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_tEXt PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_tIME_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_tIME PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_tRNS_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_tRNS PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_READ_zTXt_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_handle_zTXt PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
|
|
|
PNG_EXTERN void png_handle_unknown PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_infop info_ptr, png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
|
|
|
PNG_EXTERN void png_check_chunk_name PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep chunk_name));
|
2006-04-20 08:20:46 -04:00
|
|
|
|
2009-06-15 22:57:39 -04:00
|
|
|
/* Handle the transformations for reading and writing */
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_read_transformations PNGARG((png_structp png_ptr));
|
|
|
|
PNG_EXTERN void png_do_write_transformations PNGARG((png_structp png_ptr));
|
|
|
|
|
|
|
|
PNG_EXTERN void png_init_read_transformations PNGARG((png_structp png_ptr));
|
|
|
|
|
|
|
|
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
|
|
|
|
PNG_EXTERN void png_push_read_chunk PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_infop info_ptr));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_push_read_sig PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_infop info_ptr));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_push_check_crc PNGARG((png_structp png_ptr));
|
|
|
|
PNG_EXTERN void png_push_crc_skip PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_push_crc_finish PNGARG((png_structp png_ptr));
|
|
|
|
PNG_EXTERN void png_push_save_buffer PNGARG((png_structp png_ptr));
|
|
|
|
PNG_EXTERN void png_push_restore_buffer PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep buffer, png_size_t buffer_length));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_push_read_IDAT PNGARG((png_structp png_ptr));
|
|
|
|
PNG_EXTERN void png_process_IDAT_data PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep buffer, png_size_t buffer_length));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_push_process_row PNGARG((png_structp png_ptr));
|
|
|
|
PNG_EXTERN void png_push_handle_unknown PNGARG((png_structp png_ptr,
|
|
|
|
png_infop info_ptr, png_uint_32 length));
|
|
|
|
PNG_EXTERN void png_push_have_info PNGARG((png_structp png_ptr,
|
|
|
|
png_infop info_ptr));
|
|
|
|
PNG_EXTERN void png_push_have_end PNGARG((png_structp png_ptr,
|
|
|
|
png_infop info_ptr));
|
|
|
|
PNG_EXTERN void png_push_have_row PNGARG((png_structp png_ptr, png_bytep row));
|
|
|
|
PNG_EXTERN void png_push_read_end PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_infop info_ptr));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_process_some_data PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_infop info_ptr));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_read_push_finish_row PNGARG((png_structp png_ptr));
|
2010-03-06 11:45:55 -05:00
|
|
|
# ifdef PNG_READ_tEXt_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_push_handle_tEXt PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_infop info_ptr, png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_push_read_tEXt PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_infop info_ptr));
|
2010-03-06 11:45:55 -05:00
|
|
|
# endif
|
|
|
|
# ifdef PNG_READ_zTXt_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_push_handle_zTXt PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_infop info_ptr, png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_push_read_zTXt PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_infop info_ptr));
|
2010-03-06 11:45:55 -05:00
|
|
|
# endif
|
|
|
|
# ifdef PNG_READ_iTXt_SUPPORTED
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_push_handle_iTXt PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_infop info_ptr, png_uint_32 length));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_push_read_iTXt PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_infop info_ptr));
|
2010-03-06 11:45:55 -05:00
|
|
|
# endif
|
2006-04-20 08:20:46 -04:00
|
|
|
|
|
|
|
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
|
|
|
|
|
|
|
|
#ifdef PNG_MNG_FEATURES_SUPPORTED
|
|
|
|
PNG_EXTERN void png_do_read_intrapixel PNGARG((png_row_infop row_info,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep row));
|
2006-04-20 08:20:46 -04:00
|
|
|
PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_bytep row));
|
2006-04-20 08:20:46 -04:00
|
|
|
#endif
|
|
|
|
|
2008-11-13 07:05:13 -05:00
|
|
|
/* Added at libpng version 1.4.0 */
|
2009-09-23 11:24:53 -04:00
|
|
|
#ifdef PNG_cHRM_SUPPORTED
|
2009-09-24 19:10:49 -04:00
|
|
|
PNG_EXTERN int png_check_cHRM_fixed PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_fixed_point int_white_x, png_fixed_point int_white_y,
|
|
|
|
png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
|
|
|
|
int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
|
|
|
|
png_fixed_point int_blue_y));
|
2008-11-13 07:05:13 -05:00
|
|
|
#endif
|
|
|
|
|
2009-08-31 09:42:02 -04:00
|
|
|
#ifdef PNG_cHRM_SUPPORTED
|
2010-03-06 11:45:55 -05:00
|
|
|
# ifdef PNG_CHECK_cHRM_SUPPORTED
|
2009-07-27 23:16:09 -04:00
|
|
|
/* Added at libpng version 1.2.34 and 1.4.0 */
|
2009-09-25 12:45:42 -04:00
|
|
|
PNG_EXTERN void png_64bit_product PNGARG((long v1, long v2,
|
2010-03-06 12:39:29 -05:00
|
|
|
unsigned long *hi_product, unsigned long *lo_product));
|
2010-03-06 11:45:55 -05:00
|
|
|
# endif
|
2009-07-27 23:16:09 -04:00
|
|
|
#endif
|
|
|
|
|
2009-09-25 12:45:42 -04:00
|
|
|
/* Added at libpng version 1.4.0 */
|
|
|
|
PNG_EXTERN void png_check_IHDR PNGARG((png_structp png_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_uint_32 width, png_uint_32 height, int bit_depth,
|
|
|
|
int color_type, int interlace_type, int compression_type,
|
|
|
|
int filter_type));
|
2009-09-25 12:45:42 -04:00
|
|
|
|
2009-11-07 11:46:42 -05:00
|
|
|
/* Free all memory used by the read (old method - NOT DLL EXPORTED) */
|
2010-07-06 08:40:47 -04:00
|
|
|
PNG_EXTERN void png_read_destroy PNGARG((png_structp png_ptr, png_infop info_ptr,
|
2010-03-06 12:39:29 -05:00
|
|
|
png_infop end_info_ptr));
|
2009-11-07 11:46:42 -05:00
|
|
|
|
|
|
|
/* Free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */
|
2010-07-06 08:40:47 -04:00
|
|
|
PNG_EXTERN void png_write_destroy PNGARG((png_structp png_ptr));
|
2009-11-07 11:46:42 -05:00
|
|
|
|
|
|
|
#ifdef USE_FAR_KEYWORD /* memory model conversion function */
|
2010-07-06 08:40:47 -04:00
|
|
|
PNG_EXTERN void *png_far_to_near PNGARG((png_structp png_ptr,png_voidp ptr,
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2010-03-06 12:39:29 -05:00
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int check));
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2009-11-07 11:46:42 -05:00
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#endif /* USE_FAR_KEYWORD */
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2010-03-08 22:10:25 -05:00
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#include "pngdebug.h"
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2009-11-07 11:46:42 -05:00
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2006-04-20 08:20:46 -04:00
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/* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
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#ifdef __cplusplus
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}
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#endif
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2006-08-19 14:59:24 -04:00
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#endif /* PNGPRIV_H */
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