Update to libpng 1.2.52 (rollup change only)

third_party/libpng/png.h

 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.45 - July 7, 2011
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * libpng version 1.2.52 - November 20, 2014
+ * Copyright (c) 1998-2014 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.)
  *
  * This code is released under the libpng license (See LICENSE, below)
  *
  * 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 1.2.45 - July 7, 2011: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.52 - November 20, 2014: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
  *
  *    Due to various miscommunications, unforeseen code incompatibilities
  *    and occasional factors outside the authors' control, version numbering
  *    on the library has not always been consistent and straightforward.
  *    The following table summarizes matters since version 0.89c, which was
  *    the first widely used release:
  *
@@ skipping 232 matching lines @@
  *    1.2.42                  13    10242  12.so.0.42[.0]
  *    1.2.43beta01-05         13    10243  12.so.0.43[.0]
  *    1.0.53rc01-02           10    10053  10.so.0.53[.0]
  *    1.2.43rc01-02           13    10243  12.so.0.43[.0]
  *    1.0.53                  10    10053  10.so.0.53[.0]
  *    1.2.43                  13    10243  12.so.0.43[.0]
  *    1.2.44beta01-03         13    10244  12.so.0.44[.0]
  *    1.2.44rc01-03           13    10244  12.so.0.44[.0]
  *    1.2.44                  13    10244  12.so.0.44[.0]
  *    1.2.45beta01-03         13    10245  12.so.0.45[.0]
- *    1.0.55rc01              13    10055  10.so.0.55[.0]
+ *    1.0.55rc01              10    10055  10.so.0.55[.0]
  *    1.2.45rc01              13    10245  12.so.0.45[.0]
- *    1.0.55                  13    10055  10.so.0.55[.0]
+ *    1.0.55                  10    10055  10.so.0.55[.0]
  *    1.2.45                  13    10245  12.so.0.45[.0]
+ *    1.2.46rc01-02           13    10246  12.so.0.46[.0]
+ *    1.0.56                  10    10056  10.so.0.56[.0]
+ *    1.2.46                  13    10246  12.so.0.46[.0]
+ *    1.2.47beta01            13    10247  12.so.0.47[.0]
+ *    1.2.47rc01              13    10247  12.so.0.47[.0]
+ *    1.0.57rc01              10    10057  10.so.0.57[.0]
+ *    1.2.47                  13    10247  12.so.0.47[.0]
+ *    1.0.57                  10    10057  10.so.0.57[.0]
+ *    1.2.48beta01            13    10248  12.so.0.48[.0]
+ *    1.2.48rc01-02           13    10248  12.so.0.48[.0]
+ *    1.0.58                  10    10058  10.so.0.58[.0]
+ *    1.2.48                  13    10248  12.so.0.48[.0]
+ *    1.2.49rc01              13    10249  12.so.0.49[.0]
+ *    1.0.59                  10    10059  10.so.0.59[.0]
+ *    1.2.49                  13    10249  12.so.0.49[.0]
+ *    1.0.60                  10    10060  10.so.0.60[.0]
+ *    1.2.50                  13    10250  12.so.0.50[.0]
+ *    1.2.51beta01-05         13    10251  12.so.0.51[.0]
+ *    1.2.51rc01-04           13    10251  12.so.0.51[.0]
+ *    1.0.61                  10    10061  10.so.0.61[.0]
+ *    1.2.51                  13    10251  12.so.0.51[.0]
+ *    1.2.52beta01            13    10252  12.so.0.52[.0]
+ *    1.2.52rc01-02           13    10252  12.so.0.52[.0]
+ *    1.0.62                  10    10062  10.so.0.62[.0]
+ *    1.2.52                  13    10252  12.so.0.52[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
  *    used for changes in backward compatibility, as it is intended.  The
  *    PNG_LIBPNG_VER macro, which is not used within libpng but is available
  *    for applications, is an unsigned integer of the form xyyzz corresponding
  *    to the source version x.y.z (leading zeros in y and z).  Beta versions
  *    were given the previous public release number plus a letter, until
  *    version 1.0.6j; from then on they were given the upcoming public
  *    release number plus "betaNN" or "rcNN".
@@ skipping 11 matching lines @@
  */
 
 /*
  * COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
  *
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.2.45, July 7, 2011, are
- * Copyright (c) 2004, 2006-2010 Glenn Randers-Pehrson, and are
+ * libpng versions 1.2.6, August 15, 2004, through 1.2.52, November 20, 2014, are
+ * Copyright (c) 2004, 2006-2013 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:
  *
  *    Cosmin Truta
  *
  * libpng versions 1.0.7, July 1, 2000, through 1.2.5, October 3, 2002, are
  * Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.0.6
  * with the following individuals added to the list of Contributing Authors:
  *
@@ skipping 90 matching lines @@
  * with testing, bug fixes, and patience.  This wouldn't have been
  * possible without all of you.
  *
  * Thanks to Frank J. T. Wojcik for helping with the documentation.
  */
 
 /*
  * Y2K compliance in libpng:
  * =========================
  *
- *    July 7, 2011
+ *    November 20, 2014
  *
  *    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 1.2.45 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.52 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
  *    that will hold years up to 65535.  The other two hold the date in text
  *    format, and will hold years up to 9999.
  *
  *    The integer is
  *        "png_uint_16 year" in png_time_struct.
  *
  *    The strings are
@@ skipping 35 matching lines @@
 #ifndef PNG_H
 #define PNG_H
 
 /* This is not the place to learn how to use libpng.  The file libpng.txt
  * describes how to use libpng, and the file example.c summarizes it
  * with some code on which to build.  This file is useful for looking
  * at the actual function definitions and structure components.
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.2.45"
+#define PNG_LIBPNG_VER_STRING "1.2.52"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.45 - July 7, 2011\n"
+   " libpng version 1.2.52 - November 20, 2014\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
 #define PNG_LIBPNG_VER_DLLNUM  13
 
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
 #define PNG_LIBPNG_VER_MINOR   2
-#define PNG_LIBPNG_VER_RELEASE 45
+#define PNG_LIBPNG_VER_RELEASE 52
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero:
  */
 
 #define PNG_LIBPNG_VER_BUILD  0
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
 #define PNG_LIBPNG_BUILD_BETA     2
 #define PNG_LIBPNG_BUILD_RC       3
 #define PNG_LIBPNG_BUILD_STABLE   4
 #define PNG_LIBPNG_BUILD_RELEASE_STATUS_MASK 7
 
 /* Release-Specific Flags */
 #define PNG_LIBPNG_BUILD_PATCH    8 /* Can be OR'ed with
                                        PNG_LIBPNG_BUILD_STABLE only */
 #define PNG_LIBPNG_BUILD_PRIVATE 16 /* Cannot be OR'ed with
                                        PNG_LIBPNG_BUILD_SPECIAL */
 #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
                                        PNG_LIBPNG_BUILD_PRIVATE */
 
 #define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * We must not include leading zeros.
  * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
  * version 1.0.0 was mis-numbered 100 instead of 10000).  From
  * version 1.0.1 it's    xxyyzz, where x=major, y=minor, z=release
  */
-#define PNG_LIBPNG_VER 10245 /* 1.2.45 */
+#define PNG_LIBPNG_VER 10252 /* 1.2.52 */
 
 #ifndef PNG_VERSION_INFO_ONLY
 /* Include the compression library's header */
 #include "zlib.h"
 #endif
 
 /* Include all user configurable info, including optional assembler routines */
 #include "pngconf.h"
 
 /*
@@ skipping 1019 matching lines @@
 /* New member added in libpng-1.2.30 */
   png_charp chunkdata PNG_DEPSTRUCT;  /* buffer for reading chunk data */
 
 
 };
 
 
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef png_structp version_1_2_45;
+typedef png_structp version_1_2_52;
 
 typedef png_struct FAR * FAR * png_structpp;
 
 /* Here are the function definitions most commonly used.  This is not
  * the place to find out how to use libpng.  See libpng.txt for the
  * full explanation, see example.c for the summary.  This just provides
  * a simple one line description of the use of each function.
  */
 
 /* Returns the version number of the library */
@@ skipping 1066 matching lines @@
 
 #if (PNG_DEBUG > 1)
 /* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on non-ISO
  * compilers.
  */
 #  ifdef __STDC__
 #    ifndef png_debug
 #      define png_debug(l,m) \
        { \
        int num_tabs=l; \
-       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+       fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
          (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \
        }
 #    endif
 #    ifndef png_debug1
 #      define png_debug1(l,m,p1) \
        { \
        int num_tabs=l; \
-       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+       fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
          (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \
        }
 #    endif
 #    ifndef png_debug2
 #      define png_debug2(l,m,p1,p2) \
        { \
        int num_tabs=l; \
-       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+       fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
          (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
        }
 #    endif
 #  else /* __STDC __ */
 #    ifndef png_debug
 #      define png_debug(l,m) \
        { \
        int num_tabs=l; \
        char format[256]; \
        snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
@@ skipping 1115 matching lines @@
 
 #endif /* PNG_INTERNAL */
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif /* PNG_VERSION_INFO_ONLY */
 /* Do not put anything past this line */
 #endif /* PNG_H */