Imported from libpng-1.4.0beta62.tar

INSTALL

 
-Installing libpng version 1.4.0beta62 - May 31, 2009
+Installing libpng version 1.4.0beta62 - June 2, 2009
 
 On Unix/Linux and similar systems, you can simply type
 

LICENSE

@@ -8,7 +8,7 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.4.0beta62, May 31, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.4.0beta62, June 2, 2009, are
 Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -106,4 +106,4 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-May 31, 2009
+June 2, 2009

README

-README for libpng version 1.4.0beta62 - May 31, 2009 (shared library 14.0)
+README for libpng version 1.4.0beta62 - June 2, 2009 (shared library 14.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.

TODO

@@ -18,9 +18,9 @@ Better filter selection
    (counting huffman bits/precompression?  filter inertia?  filter costs?).
 Histogram creation.
 Text conversion between different code pages (Latin-1 -> Mac and DOS).
-Should we always malloc 2^bit_depth PLTE/tRNS/hIST entries for safety?
 Build gamma tables using fixed point (and do away with floating point entirely).
 Use greater precision when changing to linear gamma for compositing against
   background and doing rgb-to-gray transformation.
 Investigate pre-incremented loop counters and other loop constructions.
+Add interpolated method of handling interlacing
 */

example.c

@@ -2,7 +2,7 @@
 #if 0 /* in case someone actually tries to compile this */
 
 /* example.c - an example of using libpng
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * This file has been placed in the public domain by the authors.
  * Maintained 1998-2009 Glenn Randers-Pehrson
  * Maintained 1996, 1997 Andreas Dilger)

libpng.3

-.TH LIBPNG 3 "May 31, 2009"
+.TH LIBPNG 3 "June 2, 2009"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta62
 .SH SYNOPSIS
@@ -809,7 +809,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.4.0beta62 - May 31, 2009
+ libpng version 1.4.0beta62 - June 2, 2009
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -818,7 +818,7 @@ libpng.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.4.0beta62 - May 31, 2009
+ libpng versions 0.97, January 1998, through 1.4.0beta62 - June 2, 2009
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
 
@@ -2648,6 +2648,9 @@ other png_set_*() functions, which might require access to some of
 the IHDR settings.  The remaining png_set_*() functions can be called
 in any order.
 
+If you wish, you can reset the compression_type, interlace_type,
+or filter_method later.
+
     png_set_PLTE(png_ptr, info_ptr, palette,
        num_palette);
     palette        - the palette for the file
@@ -3853,7 +3856,14 @@ The png_calloc() function was added.
 We removed the trailing '.' from the warning and error messages.
 
 
-.SH X. Source code repository
+.SH X. Detecting libpng
+
+The png_get_io_ptr() function has been present since libpng-0.88, has never
+changed, and is unaffected by conditional compilation macros.  It is the
+best choice for use in configure scripts for detecting the presence of any
+libpng version since 0.88.
+
+.SH XI. Source code repository
 
 Since about February 2009, version 1.2.34, libpng has been under "git" source
 control.  The git repository was built from old libpng-x.y.z.tar.gz files
@@ -3872,7 +3882,7 @@ the libpng bug tracker at
 
     http://libpng.sourceforge.net
 
-.SH XI. Coding style
+.SH XII. Coding style
 
 Our coding style is similar to the "Allman" style, with curly
 braces on separate lines:
@@ -3958,9 +3968,9 @@ left parenthesis that follows it:
 Other rules can be inferred by inspecting the libpng
 source.
 
-.SH XII. Y2K Compliance in libpng
+.SH XIII. Y2K Compliance in libpng
 
-May 31, 2009
+June 2, 2009
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -4190,7 +4200,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.4.0beta62 - May 31, 2009:
+Libpng version 1.4.0beta62 - June 2, 2009:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -4211,7 +4221,7 @@ included in the libpng distribution, the latter shall prevail.)
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.4.0beta62, May 31, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.4.0beta62, June 2, 2009, are
 Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -4310,7 +4320,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-May 31, 2009
+June 2, 2009
 
 .\" end of man page
 

libpngpf.3

-.TH LIBPNGPF 3 "May 31, 2009"
+.TH LIBPNGPF 3 "June 2, 2009"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta62
 (private functions)

png.5

-.TH PNG 5 "May 31, 2009"
+.TH PNG 5 "June 2, 2009"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION

png.c

 
 /* png.c - location for general purpose libpng functions
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -649,13 +649,13 @@ png_get_copyright(png_structp png_ptr)
 #else
 #ifdef __STDC__
    return ((png_charp) PNG_STRING_NEWLINE \
-     "libpng version x 1.4.0beta62 - May 31, 2009" PNG_STRING_NEWLINE \
+     "libpng version x 1.4.0beta62 - June 2, 2009" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2009 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
      "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
      "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
      PNG_STRING_NEWLINE);
 #else
-      return ((png_charp) "libpng version 1.4.0beta62 - May 31, 2009\
+      return ((png_charp) "libpng version 1.4.0beta62 - June 2, 2009\
       Copyright (c) 1998-2009 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");

png.h

 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.4.0beta62 - May 31, 2009
+ * libpng version 1.4.0beta62 - June 2, 2009
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -9,7 +9,7 @@
  * Authors and maintainers:
  *  libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
  *  libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *  libpng versions 0.97, January 1998, through 1.4.0beta62 - May 31, 2009: Glenn
+ *  libpng versions 0.97, January 1998, through 1.4.0beta62 - June 2, 2009: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -157,7 +157,7 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.4.0beta62, May 31, 2009, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.4.0beta62, June 2, 2009, are
  * Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.2.5
  * with the following individual added to the list of Contributing Authors:
@@ -333,7 +333,7 @@
 /* Version information for png.h - this should match the version in png.c */
 #define PNG_LIBPNG_VER_STRING "1.4.0beta62"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.4.0beta62 - May 31, 2009\n"
+   " libpng version 1.4.0beta62 - June 2, 2009\n"
 
 #define PNG_LIBPNG_VER_SONUM   14
 #define PNG_LIBPNG_VER_DLLNUM  14

pngconf.h

 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.4.0beta62 - May 31, 2009
+ * libpng version 1.4.0beta62 - June 2, 2009
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngerror.c

 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngget.c

 
 /* pngget.c - retrieval of values from info struct
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngmem.c

 
 /* pngmem.c - stub functions for memory allocation
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngpread.c

 
 /* pngpread.c - read a png file in push mode
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngpriv.h

 
 /* pngpriv.h - private declarations for use inside libpng
  *
- * libpng version 1.4.0beta62 - May 31, 2009
+ * libpng version 1.4.0beta62 - June 2, 2009
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngread.c

 
 /* pngread.c - read a PNG file
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngrio.c

 
 /* pngrio.c - functions for data input
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngrtran.c

 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngrutil.c

 
 /* pngrutil.c - utilities to read a PNG file
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngset.c

 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngtest.c

 
 /* pngtest.c - a simple test program to test libpng
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngtrans.c

 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngwio.c

 
 /* pngwio.c - functions for data output
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngwrite.c

 
 /* pngwrite.c - general routines to write a PNG file
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngwtran.c

 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngwutil.c

 
 /* pngwutil.c - utilities to write a PNG file
  *
- * Last changed in libpng 1.4.0 [May 31, 2009]
+ * Last changed in libpng 1.4.0 [June 2, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)