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Imported from pngcrush-1.3.6.tar

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This commit is contained in:
Glenn Randers-Pehrson
2000-03-12 07:31:31 -06:00
parent 601daa7a76
commit 66e6b07dfd
23 changed files with 218 additions and 176 deletions
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69
png.h
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@@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.0.5s - February 18, 2000
* libpng version 1.0.5v - March 11, 2000
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
@@ -9,19 +9,19 @@
* Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.89c, May 1996: Guy Schalnat
* libpng versions 0.90, December 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.0.5s - February 18, 2000: Glenn
* libpng versions 0.97, January 1998, through 1.0.5v - March 11, 2000: Glenn
* See also "Contributing Authors", below.
*
* Y2K compliance in libpng:
* =========================
*
* February 18, 2000
* March 11, 2000
*
* Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration.
*
* This is your unofficial assurance that libpng from version 0.71 and
* upward through 1.0.5s are Y2K compliant. It is my belief that earlier
* upward through 1.0.5v are Y2K compliant. It is my belief that earlier
* versions were also Y2K compliant.
*
* Libpng only has three year fields. One is a 2-byte unsigned integer
@@ -99,7 +99,8 @@
* 1.0.5 1.0.5 10005 2.1.0.5
* 1.0.5a-d 1.0.5a-d 10006 2.1.0.5a-d
* 1.0.5e-r 1.0.5e-r 10100 2.1.0.5e-r (not compatible)
* 1.0.5s 1.0.5s 10006 2.1.0.5s (compatible)
* 1.0.5s-v 1.0.5s-v 10006 2.1.0.5s-v (compatible)
* 1.0.6 1.0.6 10006 2.1.0.6
* 1.3.0 1.3.0 10300 3.1.3.0
*
* Henceforth the source version will match the shared-library minor
@@ -124,7 +125,7 @@
* Copyright (c) 1996, 1997 Andreas Dilger
* (libpng versions 0.90, December 1996, through 0.96, May 1997)
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (libpng versions 0.97, January 1998, through 1.0.5s, February 18, 2000)
* (libpng versions 0.97, January 1998, through 1.0.5v, March 11, 2000)
*
* For the purposes of this copyright and license, "Contributing Authors"
* is defined as the following set of individuals:
@@ -157,16 +158,13 @@
* source code, or portions hereof, for any purpose, without fee, subject
* to the following restrictions:
*
* 1. The origin of this source code must not be
* misrepresented.
* 1. The origin of this source code must not be misrepresented.
*
* 2. Altered versions must be plainly marked as such
* and must not be misrepresented as being the
* original source.
* 2. Altered versions must be plainly marked as such and must not
* be misrepresented as being the original source.
*
* 3. This Copyright notice may not be removed or
* altered from any source or altered source
* distribution.
* 3. This Copyright notice may not be removed or altered from any
* source or altered source distribution.
*
* The Contributing Authors and Group 42, Inc. specifically permit, without
* fee, and encourage the use of this source code as a component to
@@ -230,7 +228,7 @@ extern "C" {
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.0.5s"
#define PNG_LIBPNG_VER_STRING "1.0.5v"
/* Careful here. At one time, Guy wanted to use 082, but that would be octal.
* We must not include leading zeros.
@@ -310,26 +308,26 @@ typedef png_color_8 FAR * FAR * png_color_8pp;
* The following two structures are used for the in-core representation
* of sPLT chunks.
*/
typedef struct png_spalette_entry_struct
typedef struct png_sPLT_entry_struct
{
png_uint_16 red;
png_uint_16 green;
png_uint_16 blue;
png_uint_16 alpha;
png_uint_16 frequency;
} png_spalette_entry;
typedef png_spalette_entry FAR * png_spalette_entryp;
typedef png_spalette_entry FAR * FAR * png_spalette_entrypp;
} png_sPLT_entry;
typedef png_sPLT_entry FAR * png_sPLT_entryp;
typedef png_sPLT_entry FAR * FAR * png_sPLT_entrypp;
typedef struct png_spalette_struct
typedef struct png_sPLT_struct
{
png_charp name; /* palette name */
png_byte depth; /* depth of palette samples */
png_spalette_entryp entries; /* palette entries */
png_sPLT_entryp entries; /* palette entries */
png_int_32 nentries; /* number of palette entries */
} png_spalette;
typedef png_spalette FAR * png_spalette_p;
typedef png_spalette FAR * FAR * png_spalette_pp;
} png_sPLT_t;
typedef png_sPLT_t FAR * png_sPLT_tp;
typedef png_sPLT_t FAR * FAR * png_sPLT_tpp;
#ifdef PNG_TEXT_SUPPORTED
/* png_text holds the contents of a text/ztxt/itxt chunk in a PNG file,
@@ -635,7 +633,7 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
#if defined(PNG_sPLT_SUPPORTED)
/* data on sPLT chunks (there may be more than one). */
png_spalette_p splt_palettes;
png_sPLT_tp splt_palettes;
png_uint_32 splt_palettes_num;
#endif
@@ -1039,9 +1037,9 @@ struct png_struct_def
#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
png_byte rgb_to_gray_status;
png_byte rgb_to_gray_red_coeff;
png_byte rgb_to_gray_green_coeff;
png_byte rgb_to_gray_blue_coeff;
png_uint_16 rgb_to_gray_red_coeff;
png_uint_16 rgb_to_gray_green_coeff;
png_uint_16 rgb_to_gray_blue_coeff;
#endif
#if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
@@ -1056,9 +1054,9 @@ struct png_struct_def
};
/* This prevents a compiler error in png_get_copyright() in png.c if png.c
and png.h are both at * version 1.0.5s
and png.h are both at * version 1.0.5v
*/
typedef png_structp version_1_0_5s;
typedef png_structp version_1_0_5v;
typedef png_struct FAR * FAR * png_structpp;
@@ -1179,6 +1177,8 @@ extern PNG_EXPORT(void,png_set_gray_to_rgb) PNGARG((png_structp png_ptr));
extern PNG_EXPORT(void,png_set_rgb_to_gray) PNGARG((png_structp png_ptr,
int error_action, double red, double green ));
#endif
extern PNG_EXPORT(void,png_set_rgb_to_gray_fixed) PNGARG((png_structp png_ptr,
int error_action, png_fixed_point red, png_fixed_point green ));
extern PNG_EXPORT(png_byte,png_get_rgb_to_gray_status) PNGARG((png_structp
png_ptr));
#endif
@@ -1887,12 +1887,12 @@ extern PNG_EXPORT(void,png_set_iCCP) PNGARG((png_structp png_ptr,
#if defined(PNG_READ_sPLT_SUPPORTED)
extern PNG_EXPORT(png_uint_32,png_get_sPLT) PNGARG((png_structp png_ptr,
png_infop info_ptr, png_spalette_pp entries));
png_infop info_ptr, png_sPLT_tpp entries));
#endif
#if defined(PNG_sPLT_SUPPORTED)
extern PNG_EXPORT(void,png_set_sPLT) PNGARG((png_structp png_ptr,
png_infop info_ptr, png_spalette_p entries, int nentries));
png_infop info_ptr, png_sPLT_tp entries, int nentries));
#endif
#if defined(PNG_TEXT_SUPPORTED)
@@ -2029,7 +2029,7 @@ extern PNG_EXPORT(png_charp,png_get_header_version) PNGARG((png_structp png_ptr)
extern PNG_EXPORT(png_charp,png_get_libpng_ver) PNGARG((png_structp png_ptr));
#define PNG_HEADER_VERSION_STRING \
" libpng version 1.0.5s - February 18, 2000 (header)\n"
" libpng version 1.0.5v - March 11, 2000 (header)\n"
#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
/* With these routines we avoid an integer divide, which will be slower on
@@ -2083,7 +2083,6 @@ extern PNG_EXPORT(png_charp,png_get_libpng_ver) PNGARG((png_structp png_ptr));
/* Various modes of operation. Note that after an init, mode is set to
* zero automatically when the structure is created.
*/
#define PNG_BEFORE_IHDR 0x00
#define PNG_HAVE_IHDR 0x01
#define PNG_HAVE_PLTE 0x02
#define PNG_HAVE_IDAT 0x04
@@ -2404,7 +2403,7 @@ PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr,
#if defined(PNG_WRITE_sPLT_SUPPORTED)
PNG_EXTERN void png_write_sPLT PNGARG((png_structp png_ptr,
png_spalette_p palette));
png_sPLT_tp palette));
#endif
#if defined(PNG_WRITE_tRNS_SUPPORTED)