Imported from libpng-1.2.9beta8.tar

png.h

diff --git a/png.h b/png.h
index 2126dd6..bc2e4bd 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.9beta7 - March 7, 2006
+ * libpng version 1.2.9beta8 - March 9, 2006
  * Copyright (c) 1998-2006 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 1.2.9beta7 - March 7, 2006: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.9beta8 - March 9, 2006: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -113,7 +113,7 @@
  *    1.0.18                  10    10018  12.so.0.1.0.18
  *    1.2.8                   13    10208  12.so.0.1.2.8
  *    1.2.9beta1-3            13    10209  12.so.0.1.2.9beta1-3
- *    1.2.9beta4-7            13    10209  12.so.0.9[.0]
+ *    1.2.9beta4-8            13    10209  12.so.0.9[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -143,7 +143,7 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.2.9beta7, March 7, 2006, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.2.9beta8, March 9, 2006, are
  * Copyright (c) 2004, 2006 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:
@@ -255,13 +255,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    March 7, 2006
+ *    March 9, 2006
  *
  *    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 1.2.9beta7 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.9beta8 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
@@ -317,9 +317,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.2.9beta7"
+#define PNG_LIBPNG_VER_STRING "1.2.9beta8"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.9beta7 - March 7, 2006 (header)\n"
+   " libpng version 1.2.9beta8 - March 9, 2006 (header)\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
 #define PNG_LIBPNG_VER_DLLNUM  13
@@ -331,7 +331,7 @@
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
 
-#define PNG_LIBPNG_VER_BUILD  7
+#define PNG_LIBPNG_VER_BUILD  8
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -1361,7 +1361,7 @@
 /* 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_9beta7;
+typedef png_structp version_1_2_9beta8;
 
 typedef png_struct FAR * FAR * png_structpp;
 
@@ -1491,9 +1491,16 @@
 #if defined(PNG_READ_EXPAND_SUPPORTED)
 /* Expand data to 24-bit RGB, or 8-bit grayscale, with alpha if available. */
 extern PNG_EXPORT(void,png_set_expand) PNGARG((png_structp png_ptr));
-extern PNG_EXPORT(void,png_set_gray_1_2_4_to_8) PNGARG((png_structp png_ptr));
+#if !defined(PNG_1_0_X)
+extern PNG_EXPORT(void,png_set_expand_gray_1_2_4_to_8) PNGARG((png_structp
+  png_ptr));
+#endif
 extern PNG_EXPORT(void,png_set_palette_to_rgb) PNGARG((png_structp png_ptr));
 extern PNG_EXPORT(void,png_set_tRNS_to_alpha) PNGARG((png_structp png_ptr));
+#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
+/* Deprecated */
+extern PNG_EXPORT(void,png_set_gray_1_2_4_to_8) PNGARG((png_structp png_ptr));
+#endif
 #endif
 
 #if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
@@ -2675,7 +2682,7 @@
 #define PNG_RGB_TO_GRAY      0x600000L  /* two bits, RGB_TO_GRAY_ERR|WARN */
                        /*    0x800000L     Unused */
 #define PNG_ADD_ALPHA       0x1000000L  /* Added to libpng-1.2.7 */
-                       /*   0x2000000L  unused */
+#define PNG_EXPAND_tRNS     0x2000000L  /* Added to libpng-1.2.9 */
                        /*   0x4000000L  unused */
                        /*   0x8000000L  unused */
                        /*  0x10000000L  unused */