[libpng17] Imported from libpng-1.7.0beta09.tar

2025-07-10 18:04:09 +02:00 · 2013-04-23 20:42:23 -05:00
12 changed files with 94 additions and 20 deletions
--- a/4
+++ b/4
@@ -10,7 +10,7 @@ this sentence.

 This code is released under the libpng license.

-libpng versions 1.2.6, August 15, 2004, through 1.7.0beta09, April 18, 2013, are
+libpng versions 1.2.6, August 15, 2004, through 1.7.0beta09, April 24, 2013, 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
@@ -108,4 +108,4 @@ certification mark of the Open Source Initiative.

 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-April 18, 2013
+April 24, 2013
--- a/2
+++ b/2
@@ -1,4 +1,4 @@
-README for libpng version 1.7.0beta09 - April 18, 2013 (shared library 17.0)
+README for libpng version 1.7.0beta09 - April 24, 2013 (shared library 17.0)
 See the note about version numbers near the top of png.h

 See INSTALL for instructions on how to install libpng.
--- a/arm_init.c
+++ b/arm_init.c
@@ -0,0 +1,74 @@
+
+/* filter_neon.S - NEON optimised filter functions
+ *
+ * Copyright (c) 2011 Glenn Randers-Pehrson
+ * Written by Mans Rullgard, 2011.
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+#include "../pngpriv.h"
+
+/* __arm__ is defined by GCC, MSVC defines _M_ARM to the ARM version number */
+#if defined __linux__ && defined __arm__
+#include <stdio.h>
+#include <elf.h>
+#include <asm/hwcap.h>
+
+static int png_have_hwcap(unsigned cap)
+{
+   FILE *f = fopen("/proc/self/auxv", "r");
+   Elf32_auxv_t aux;
+   int have_cap = 0;
+
+   if (!f)
+      return 0;
+
+   while (fread(&aux, sizeof(aux), 1, f) > 0)
+   {
+      if (aux.a_type == AT_HWCAP &&
+          aux.a_un.a_val & cap)
+      {
+         have_cap = 1;
+         break;
+      }
+   }
+
+   fclose(f);
+
+   return have_cap;
+}
+#endif /* __linux__ && __arm__ */
+
+void
+png_init_filter_functions_neon(png_structp pp, unsigned int bpp)
+{
+#ifdef __arm__
+#ifdef __linux__
+   if (!png_have_hwcap(HWCAP_NEON))
+      return;
+#endif
+
+   pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up_neon;
+
+   if (bpp == 3)
+   {
+      pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub3_neon;
+      pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg3_neon;
+      pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
+         png_read_filter_row_paeth3_neon;
+   }
+
+   else if (bpp == 4)
+   {
+      pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub4_neon;
+      pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_neon;
+      pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
+          png_read_filter_row_paeth4_neon;
+   }
+#else
+   PNG_UNUSED(pp)
+   PNG_UNUSED(bpp)
+#endif
+}
--- a/libpng-manual.txt
+++ b/libpng-manual.txt
@@ -1,6 +1,6 @@
 libpng-manual.txt - A description on how to use and modify libpng

- libpng version 1.7.0beta09 - April 18, 2013
+ libpng version 1.7.0beta09 - April 24, 2013
 Updated and distributed by Glenn Randers-Pehrson
 <glennrp at users.sourceforge.net>
 Copyright (c) 1998-2013 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@ libpng-manual.txt - A description on how to use and modify libpng

 Based on:

- libpng versions 0.97, January 1998, through 1.7.0beta09 - April 18, 2013
+ libpng versions 0.97, January 1998, through 1.7.0beta09 - April 24, 2013
 Updated and distributed by Glenn Randers-Pehrson
 Copyright (c) 1998-2013 Glenn Randers-Pehrson

@@ -5196,7 +5196,7 @@ Other rules can be inferred by inspecting the libpng source.

 XVII. Y2K Compliance in libpng

-April 18, 2013
+April 24, 2013

 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "April 18, 2013"
+.TH LIBPNG 3 "April 24, 2013"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.7.0beta09
 .SH SYNOPSIS
@@ -494,7 +494,7 @@ Following is a copy of the libpng-manual.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng

- libpng version 1.7.0beta09 - April 18, 2013
+ libpng version 1.7.0beta09 - April 24, 2013
 Updated and distributed by Glenn Randers-Pehrson
 <glennrp at users.sourceforge.net>
 Copyright (c) 1998-2013 Glenn Randers-Pehrson
@@ -505,7 +505,7 @@ libpng-manual.txt - A description on how to use and modify libpng

 Based on:

- libpng versions 0.97, January 1998, through 1.7.0beta09 - April 18, 2013
+ libpng versions 0.97, January 1998, through 1.7.0beta09 - April 24, 2013
 Updated and distributed by Glenn Randers-Pehrson
 Copyright (c) 1998-2013 Glenn Randers-Pehrson

@@ -5691,7 +5691,7 @@ Other rules can be inferred by inspecting the libpng source.

 .SH XVII. Y2K Compliance in libpng

-April 18, 2013
+April 24, 2013

 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -5961,7 +5961,7 @@ possible without all of you.

 Thanks to Frank J. T. Wojcik for helping with the documentation.

-Libpng version 1.7.0beta09 - April 18, 2013:
+Libpng version 1.7.0beta09 - April 24, 2013:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).

@@ -5984,7 +5984,7 @@ this sentence.

 This code is released under the libpng license.

-libpng versions 1.2.6, August 15, 2004, through 1.7.0beta09, April 18, 2013, are
+libpng versions 1.2.6, August 15, 2004, through 1.7.0beta09, April 24, 2013, 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
@@ -6083,7 +6083,7 @@ certification mark of the Open Source Initiative.

 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-April 18, 2013
+April 24, 2013

 .\" end of man page

--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "April 18, 2013"
+.TH LIBPNGPF 3 "April 24, 2013"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.7.0beta09
 (private functions)
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "April 18, 2013"
+.TH PNG 5 "April 24, 2013"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@

 /* pngconf.h - machine configurable file for libpng
 *
- * libpng version 1.7.0beta09 - April 18, 2013
+ * libpng version 1.7.0beta09 - April 24, 2013
 *
 * Copyright (c) 1998-2013 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@

 VisualStudio instructions

-libpng version 1.7.0beta09 - April 18, 2013
+libpng version 1.7.0beta09 - April 24, 2013

 Copyright (c) 1998-2010 Glenn Randers-Pehrson

--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
 * zlib.props - location of zlib source
 *
- * libpng version 1.7.0beta09 - April 18, 2013
+ * libpng version 1.7.0beta09 - April 24, 2013
 *
 * Copyright (c) 1998-2011 Glenn Randers-Pehrson
 *
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,5 +1,5 @@

-Makefiles for  libpng version 1.7.0beta09 - April 18, 2013
+Makefiles for  libpng version 1.7.0beta09 - April 24, 2013

 pnglibconf.h.prebuilt       =>  Stores configuration settings
 makefile.linux    =>  Linux/ELF makefile
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -2,7 +2,7 @@

 /* pnglibconf.h - library build configuration */

-/* Libpng version 1.7.0beta09 - April 18, 2013 */
+/* Libpng version 1.7.0beta09 - April 24, 2013 */

 /* Copyright (c) 1998-2013 Glenn Randers-Pehrson */