[devel]

Fixed point APIs are now supported throughout (no missing APIs).
  Internal fixed point arithmetic support exists for all internal floating
    point operations.
  sCAL validates the floating point strings it is passed.
  Safe, albeit rudimentary, Watcom support is provided by PNG_API_RULE==2
  Two new APIs exist to get the number of passes without turning on the
    PNG_INTERLACE transform and to get the number of rows in the current
    pass.
  A new test program, pngvalid.c, validates the gamma code.
  Errors in the 16 bit gamma correction (overflows) have been corrected.
  cHRM chunk testing is done consistently (previously the floating point
    API bypassed it, because the test really didn't work on FP, now the test
    is performed on the actual values to be stored in the PNG file so it
    works in the FP case too.)
  Most floating point APIs now simply call the fixed point APIs after
    converting the values to the fixed point form used in the PNG file.
  The standard headers no longer include zlib.h, which is currently only
    required for pngstruct.h and can therefore be internal.
  (Patches by John Bowler)

scripts/pnglibconf.h

@@ -1,7 +1,7 @@
 /* libpng-1.5.0beta36 STANDARD API DEFINITION */
 /* pnglibconf.h - library build configuration */
 
-/* last changed in libpng version 1.5.0 - July 24, 2010 */
+/* last changed in libpng version 1.5.0 - July 29, 2010 */
 
 /* Copyright (c) 1998-2010 Glenn Randers-Pehrson */
 
@@ -15,20 +15,33 @@
 #ifndef PNGLCONF_H
 #define PNGLCONF_H
 /* settings */
+#define PNG_MAX_GAMMA_8 11
 #define PNG_CALLOC_SUPPORTED
+#define PNG_QUANTIZE_RED_BITS 5
 #define PNG_USER_WIDTH_MAX 1000000L
+#define PNG_QUANTIZE_GREEN_BITS 5
 #define PNG_API_RULE 0
+#define PNG_QUANTIZE_BLUE_BITS 5
 #define PNG_USER_CHUNK_CACHE_MAX 0
 #define PNG_USER_HEIGHT_MAX 1000000L
+#define PNG_sCAL_PRECISION 5
+#define PNG_COST_SHIFT 3
+#define PNG_WEIGHT_SHIFT 8
 #define PNG_USER_CHUNK_MALLOC_MAX 0
 #define PNG_DEFAULT_READ_MACROS 1
+#define PNG_ZBUF_SIZE 8192
+#define PNG_GAMMA_THRESHOLD_FIXED 5000
 /* end of settings */
 /* options */
 #define PNG_INFO_IMAGE_SUPPORTED
 #define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#define PNG_POINTER_INDEXING_SUPPORTED
+#define PNG_WARNINGS_SUPPORTED
+#define PNG_FLOATING_ARITHMETIC_SUPPORTED
 #define PNG_WRITE_SUPPORTED
 #define PNG_WRITE_INTERLACING_SUPPORTED
 #define PNG_EASY_ACCESS_SUPPORTED
+#define PNG_ALIGN_MEMORY_SUPPORTED
 #define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
 #define PNG_USER_LIMITS_SUPPORTED
 #define PNG_FIXED_POINT_SUPPORTED
@@ -112,7 +125,6 @@
 #define PNG_WRITE_BGR_SUPPORTED
 #define PNG_USER_CHUNKS_SUPPORTED
 #define PNG_CONSOLE_IO_SUPPORTED
-#define PNG_GET_INT_32_SUPPORTED
 #define PNG_WRITE_PACK_SUPPORTED
 #define PNG_READ_FILLER_SUPPORTED
 #define PNG_WRITE_bKGD_SUPPORTED
@@ -144,6 +156,7 @@
 #define PNG_READ_zTXt_SUPPORTED
 #define PNG_gAMA_SUPPORTED
 #define PNG_pCAL_SUPPORTED
+#define PNG_CHECK_cHRM_SUPPORTED
 #define PNG_tIME_SUPPORTED
 #define PNG_pHYs_SUPPORTED
 #define PNG_READ_iTXt_SUPPORTED