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Imported from libpng-1.0.5c.tar

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This commit is contained in:
Glenn Randers-Pehrson
1999-11-27 10:22:33 -06:00
parent 6d8f3b080a
commit 5379b24536
46 changed files with 720 additions and 178 deletions
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86
png.h
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@@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.0.5a - October 23, 1999
* libpng version 1.0.5c - November 27, 1999
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, 1999 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 1.0.5a - October 23, 1999: Glenn
* libpng versions 0.97, January 1998, through 1.0.5c - November 27, 1999: Glenn
* See also "Contributing Authors", below.
*
* Y2K compliance in libpng:
* =========================
*
* October 23, 1999
* November 27, 1999
*
* 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 1.0.5a are Y2K compliant. It is my belief that earlier
* upward through 1.0.5c 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
@@ -97,7 +97,7 @@
* 1.0.4 1.0.4 10004 2.1.0.4
* 1.0.4a-f 1.0.4a-f 10005 2.1.0.4a-f
* 1.0.5 1.0.5 10005 2.1.0.5
* 1.0.5a 1.0.5a 10006 2.1.0.5a
* 1.0.5a-d 1.0.5a-d 10006 2.1.0.5a-d
* 1.0.6 1.0.6 10006 2.1.0.6
*
* Henceforth the source version will match the shared-library minor
@@ -122,7 +122,7 @@
* Copyright (c) 1996, 1997 Andreas Dilger
* (libpng versions 0.90, December 1996, through 0.96, May 1997)
* Copyright (c) 1998, 1999 Glenn Randers-Pehrson
* (libpng versions 0.97, January 1998, through 1.0.5a, October 23, 1999)
* (libpng versions 0.97, January 1998, through 1.0.5c, November 27, 1999)
*
* For the purposes of this copyright and license, "Contributing Authors"
* is defined as the following set of individuals:
@@ -222,7 +222,7 @@ extern "C" {
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.0.5a"
#define PNG_LIBPNG_VER_STRING "1.0.5c"
/* Careful here. At one time, Guy wanted to use 082, but that would be octal.
* We must not include leading zeros.
@@ -238,8 +238,14 @@ extern "C" {
/* Version information for C files, stored in png.c. This had better match
* the version above.
*/
#ifdef PNG_GLOBAL_ARRAYS
extern char png_libpng_ver[12]; /* need room for 99.99.99aa */
#else
#define png_libpng_ver png_get_header_ver(NULL)
#endif
#ifdef PNG_GLOBAL_ARRAYS
/* This was removed in version 1.0.5c */
/* Structures to facilitate easy interlacing. See png.c for more details */
extern int FARDATA png_pass_start[7];
extern int FARDATA png_pass_inc[7];
@@ -251,6 +257,7 @@ extern int FARDATA png_pass_dsp_mask[7];
extern int FARDATA png_pass_width[7];
extern int FARDATA png_pass_height[7];
*/
#endif
#endif /* PNG_NO_EXTERN */
@@ -559,10 +566,10 @@ typedef png_info FAR * FAR * png_infopp;
#define PNG_RESOLUTION_LAST 2 /* Not a valid value */
/* These are for the sRGB chunk. These values should NOT be changed. */
#define PNG_sRGB_INTENT_SATURATION 0
#define PNG_sRGB_INTENT_PERCEPTUAL 1
#define PNG_sRGB_INTENT_ABSOLUTE 2
#define PNG_sRGB_INTENT_RELATIVE 3
#define PNG_sRGB_INTENT_PERCEPTUAL 0
#define PNG_sRGB_INTENT_RELATIVE 1
#define PNG_sRGB_INTENT_SATURATION 2
#define PNG_sRGB_INTENT_ABSOLUTE 3
#define PNG_sRGB_INTENT_LAST 4 /* Not a valid value */
@@ -820,9 +827,9 @@ 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 1.0.5a
and png.h are both at * version 1.0.5c
*/
typedef png_structp version_1_0_5a;
typedef png_structp version_1_0_5c;
typedef png_struct FAR * FAR * png_structpp;
@@ -895,6 +902,8 @@ extern PNG_EXPORT(png_infop,png_create_info_struct)
extern void png_info_init PNGARG((png_infop info_ptr));
/* Writes all the PNG information before the image. */
extern PNG_EXPORT(void,png_write_info_before_PLTE) PNGARG((png_structp png_ptr,
png_infop info_ptr));
extern PNG_EXPORT(void,png_write_info) PNGARG((png_structp png_ptr,
png_infop info_ptr));
@@ -1633,21 +1642,14 @@ extern PNG_EXPORT(void,png_set_tRNS) PNGARG((png_structp png_ptr,
#define png_debug2(l, m, p1, p2)
#endif
extern PNG_EXPORT(png_bytep,png_sig_bytes) PNGARG((png_structp png_ptr));
extern PNG_EXPORT(png_charp,png_get_copyright) PNGARG((png_structp png_ptr));
extern PNG_EXPORT(png_charp,png_get_header_ver) PNGARG((png_structp png_ptr));
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));
#ifdef PNG_NO_EXTERN
/* this only gets included in png.c */
#define PNG_GET_HEADER \
png_charp \
png_get_header_version(png_structp png_ptr) \
{ \
if(png_ptr != NULL) /* silence compiler warning about unused png_ptr */ \
return("\n libpng version 1.0.5a - October 23, 1999 (header)\n"); \
return("\n libpng version 1.0.5a - October 23, 1999 (header)\n"); \
}
#endif
#define PNG_HEADER_VERSION_STRING " libpng version 1.0.5c - November 27, 1999 (header)\n"
#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
/* With these routines we avoid an integer divide, which will be slower on
@@ -1701,15 +1703,19 @@ png_get_header_version(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
#define PNG_AFTER_IDAT 0x08
#define PNG_HAVE_IEND 0x10
#define PNG_HAVE_gAMA 0x20
#define PNG_HAVE_cHRM 0x40
#define PNG_HAVE_sRGB 0x80
#define PNG_BEFORE_IHDR 0x00
#define PNG_HAVE_IHDR 0x01
#define PNG_HAVE_PLTE 0x02
#define PNG_HAVE_IDAT 0x04
#define PNG_AFTER_IDAT 0x08
#define PNG_HAVE_IEND 0x10
#define PNG_HAVE_gAMA 0x20
#define PNG_HAVE_cHRM 0x40
#define PNG_HAVE_sRGB 0x80
#define PNG_HAVE_CHUNK_HEADER 0x100
#define PNG_WROTE_tIME 0x200
#define PNG_WROTE_INFO_BEFORE_PLTE 0x400
#define PNG_BACKGROUND_IS_GRAY 0x800
/* push model modes */
#define PNG_READ_SIG_MODE 0
@@ -1773,9 +1779,7 @@ png_get_header_version(png_structp png_ptr) \
#define PNG_FLAG_FREE_PALETTE 0x1000
#define PNG_FLAG_FREE_TRANS 0x2000
#define PNG_FLAG_FREE_HIST 0x4000
#define PNG_FLAG_HAVE_CHUNK_HEADER 0x8000L
#define PNG_FLAG_WROTE_tIME 0x10000L
#define PNG_FLAG_BACKGROUND_IS_GRAY 0x20000L
#define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \
PNG_FLAG_CRC_ANCILLARY_NOWARN)
@@ -1794,8 +1798,13 @@ png_get_header_version(png_structp png_ptr) \
/* variables declared in png.c - only it needs to define PNG_NO_EXTERN */
#if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN)
/* place to hold the signature string for a PNG file. */
extern png_byte FARDATA png_sig[8];
#ifdef PNG_GLOBAL_ARRAYS
extern png_byte FARDATA png_sig[8];
#else
#define png_sig png_sig_bytes(NULL)
#endif
#ifdef PNG_GLOBAL_ARRAYS
/* Constant strings for known chunk types. If you need to add a chunk,
* add a string holding the name here. See png.c for more details. We
* can't selectively include these, since we still check for chunk in the
@@ -1818,6 +1827,7 @@ extern png_byte FARDATA png_tEXt[5];
extern png_byte FARDATA png_tIME[5];
extern png_byte FARDATA png_tRNS[5];
extern png_byte FARDATA png_zTXt[5];
#endif /* PNG_GLOBAL_ARRAYS */
#endif /* PNG_NO_EXTERN */