Imported from libpng-1.2.7beta2.tar
This commit is contained in:
Glenn Randers-Pehrson
parent
a4981d4ded
commit
67864af957
10
ANNOUNCE
10
ANNOUNCE
@ -1,5 +1,5 @@
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Libpng 1.2.7beta1 - August 26, 2004
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Libpng 1.2.7beta2 - August 29, 2004
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This is not intended to be a public release. It will be replaced
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within a few weeks by a public version or by another test version.
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@ -14,8 +14,14 @@ version 1.2.7beta1 [August 26, 2004]
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PNG Spec (second edition) and the PNG ISO/IEC Standard.
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Added "test-dd" target in 15 makefiles, to run pngtest in DESTDIR.
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Fixed bug with "optimized window size" in the IDAT datastream.
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version 1.2.7beta1 [August 29, 2004]
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Fixed bug with sCAL chunk and big-endian machines (David Munro).
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Undid new code added in 1.2.6rc2 to update the color_type in
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png_set_filler().
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Added png_set_add_alpha() that updates color type.
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Send comments/corrections/commendations to
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png-implement@ccrc.wustl.edu or to glennrp@users.sourceforge.net
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png-implement@ccrc.wustl.edu (subscription required; write to
|
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majordomo@ccrc.wustl.edu) or to glennrp@users.sourceforge.net
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Glenn R-P
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9
CHANGES
9
CHANGES
@ -1316,6 +1316,7 @@ version 1.0.16rc1 and 1.2.6rc1 [August 4, 2004]
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Revised use of PNG_SET_USER_LIMITS_SUPPORTED macro.
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Fixed wrong cast of returns from png_get_user_width|height_max().
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Changed some "keep the compiler happy" from empty statements to returns,
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Revised libpng.txt to remove 1.2.x stuff from the 1.0.x distribution
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version 1.0.16rc2 and 1.2.6rc2 [August 7, 2004]
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Revised makefile.darwin and makefile.solaris. Removed makefile.macosx.
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Revised pngtest's png_debug_malloc() to use png_malloc() instead of
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@ -1352,8 +1353,14 @@ version 1.2.7beta1 [August 26, 2004]
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PNG Spec (second edition) and the PNG ISO/IEC Standard.
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Added "test-dd" target in 15 makefiles, to run pngtest in DESTDIR.
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Fixed bug with "optimized window size" in the IDAT datastream.
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version 1.2.7beta2 [August 29, 2004]
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Fixed bug with sCAL chunk and big-endian machines (David Munro).
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Undid new code added in 1.2.6rc2 to update the color_type in
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png_set_filler().
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Added png_set_add_alpha() that updates color type.
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Send comments/corrections/commendations to
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png-implement@ccrc.wustl.edu or to glennrp@users.sourceforge.net
|
||||
png-implement@ccrc.wustl.edu (subscription required; write to
|
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majordomo@ccrc.wustl.edu) or to glennrp@users.sourceforge.net
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Glenn R-P
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14
INSTALL
14
INSTALL
@ -1,5 +1,5 @@
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Installing libpng version 1.2.7beta1 - August 26, 2004
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Installing libpng version 1.2.7beta2 - August 29, 2004
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Before installing libpng, you must first install zlib. zlib
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can usually be found wherever you got libpng. zlib can be
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@ -10,7 +10,7 @@ zlib.h and zconf.h include files that correspond to the
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version of zlib that's installed.
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You can rename the directories that you downloaded (they
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might be called "libpng-1.2.7beta1" or "lpng109" and "zlib-1.2.1"
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might be called "libpng-1.2.7beta2" or "lpng109" and "zlib-1.2.1"
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or "zlib121") so that you have directories called "zlib" and "libpng".
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Your directory structure should look like this:
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@ -67,9 +67,9 @@ include
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makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
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makefile.linux => Linux/ELF makefile
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(gcc, creates libpng12.so.0.1.2.7beta1)
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(gcc, creates libpng12.so.0.1.2.7beta2)
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makefile.gcmmx => Linux/ELF makefile
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(gcc, creates libpng12.so.0.1.2.7beta1,
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(gcc, creates libpng12.so.0.1.2.7beta2,
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uses assembler code tuned for Intel MMX platform)
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makefile.gcc => Generic makefile (gcc, creates static libpng.a)
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makefile.knr => Archaic UNIX Makefile that converts files with
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@ -91,12 +91,12 @@ include
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makefile.openbsd => OpenBSD makefile
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makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
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makefile.sggcc => Silicon Graphics (gcc,
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creates libpng12.so.0.1.2.7beta1)
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creates libpng12.so.0.1.2.7beta2)
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makefile.sunos => Sun makefile
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makefile.solaris => Solaris 2.X makefile (gcc,
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creates libpng12.so.0.1.2.7beta1)
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creates libpng12.so.0.1.2.7beta2)
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makefile.so9 => Solaris 9 makefile (gcc,
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creates libpng12.so.0.1.2.7beta1)
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creates libpng12.so.0.1.2.7beta2)
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makefile.32sunu => Sun Ultra 32-bit makefile
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makefile.64sunu => Sun Ultra 64-bit makefile
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makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
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2
KNOWNBUG
2
KNOWNBUG
@ -1,5 +1,5 @@
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Known bugs in libpng version 1.2.7beta1
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Known bugs in libpng version 1.2.7beta2
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1. April 22, 2001: pnggccrd.c has been reported to crash on NetBSD when
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reading interlaced PNG files, when assembler code is enabled but running
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4
LICENSE
4
LICENSE
@ -8,7 +8,7 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
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If you modify libpng you may insert additional notices immediately following
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this sentence.
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libpng version 1.2.6, August 26, 2004, is
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libpng version 1.2.6, August 29, 2004, is
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Copyright (c) 2004 Glenn Randers-Pehrson, and is
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distributed according to the same disclaimer and license as libpng-1.2.5
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with the following individual added to the list of Contributing Authors
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@ -106,4 +106,4 @@ certification mark of the Open Source Initiative.
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Glenn Randers-Pehrson
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glennrp@users.sourceforge.net
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August 26, 2004
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August 29, 2004
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15
README
15
README
@ -1,4 +1,4 @@
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README for libpng version 1.2.7beta1 - August 26, 2004 (shared library 12.0)
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README for libpng version 1.2.7beta2 - August 29, 2004 (shared library 12.0)
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See the note about version numbers near the top of png.h
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See INSTALL for instructions on how to install libpng.
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@ -104,7 +104,8 @@ This release was created and will be supported by myself (of course
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based in a large way on Guy's and Andreas' earlier work), and the PNG group.
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glennrp@users.sourceforge.net
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png-implement@ccrc.wustl.edu
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png-implement@ccrc.wustl.edu (subscription required; write to
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majordomo@ccrc.wustl.edu)
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You can't reach Guy, the original libpng author, at the addresses
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given in previous versions of this document. He and Andreas will read mail
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@ -186,9 +187,9 @@ Files in this distribution:
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descrip.mms => VMS makefile for MMS or MMK
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makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
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makefile.linux => Linux/ELF makefile
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(gcc, creates libpng12.so.0.1.2.7beta1)
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(gcc, creates libpng12.so.0.1.2.7beta2)
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makefile.gcmmx => Linux/ELF makefile
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(gcc, creates libpng12.so.0.1.2.7beta1,
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(gcc, creates libpng12.so.0.1.2.7beta2,
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uses assembler code tuned for Intel MMX platform)
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makefile.gcc => Generic makefile (gcc, creates static libpng.a)
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makefile.knr => Archaic UNIX Makefile that converts files with
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@ -209,12 +210,12 @@ Files in this distribution:
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makefile.openbsd => OpenBSD makefile
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makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
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makefile.sggcc => Silicon Graphics
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(gcc, creates libpng12.so.0.1.2.7beta1)
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(gcc, creates libpng12.so.0.1.2.7beta2)
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makefile.sunos => Sun makefile
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makefile.solaris => Solaris 2.X makefile
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(gcc, creates libpng12.so.0.1.2.7beta1)
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(gcc, creates libpng12.so.0.1.2.7beta2)
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makefile.so9 => Solaris 9 makefile
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(gcc, creates libpng12.so.0.1.2.7beta1)
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(gcc, creates libpng12.so.0.1.2.7beta2)
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makefile.32sunu => Sun Ultra 32-bit makefile
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makefile.64sunu => Sun Ultra 64-bit makefile
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makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
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4
Y2KINFO
4
Y2KINFO
@ -1,13 +1,13 @@
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Y2K compliance in libpng:
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=========================
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August 26, 2004
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August 29, 2004
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Since the PNG Development group is an ad-hoc body, we can't make
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an official declaration.
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This is your unofficial assurance that libpng from version 0.71 and
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upward through 1.2.7beta1 are Y2K compliant. It is my belief that earlier
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upward through 1.2.7beta2 are Y2K compliant. It is my belief that earlier
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versions were also Y2K compliant.
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Libpng only has three year fields. One is a 2-byte unsigned integer
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4
configure
vendored
4
configure
vendored
@ -1,13 +1,13 @@
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#!/bin/sh
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echo "
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There is no \"configure\" script in this distribution of
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libpng-1.2.7beta1.
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libpng-1.2.7beta2.
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Instead, please copy the appropriate makefile for your system from the
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\"scripts\" directory. Read the INSTALL file for more details.
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Update, July 2004: you can get a "configure" based distribution
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from the libpng distribution sites. Download the file
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libpng-1.2.7beta1-config.tar.gz
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libpng-1.2.7beta2-config.tar.gz
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"
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@ -742,6 +742,9 @@ void write_png(char *file_name /* , ... other image information ... */)
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png_byte image[height][width*bytes_per_pixel];
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png_bytep row_pointers[height];
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if (height > PNG_UINT_32_MAX/png_sizeof(png_bytep))
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png_error (png_ptr, "Image is too tall to process in memory");
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for (k = 0; k < height; k++)
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row_pointers[k] = image + k*width*bytes_per_pixel;
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320
libpng.3
320
libpng.3
@ -1,6 +1,6 @@
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.TH LIBPNG 3 "August 26, 2004"
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.TH LIBPNG 3 "August 29, 2004"
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.SH NAME
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libpng \- Portable Network Graphics (PNG) Reference Library 1.2.7beta1
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libpng \- Portable Network Graphics (PNG) Reference Library 1.2.7beta2
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.SH SYNOPSIS
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\fI\fB
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@ -402,6 +402,14 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.2.7beta1
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\fI\fB
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\fB#if \fI!defined(PNG_1_0_X)
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\fBvoid png_set_add_alpha (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, int \fIflags\fP\fB);\fP
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\fI\fB#endif
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\fI\fB
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\fBvoid png_set_background (png_structp \fP\fIpng_ptr\fP\fB, png_color_16p \fP\fIbackground_color\fP\fB, int \fP\fIbackground_gamma_code\fP\fB, int \fP\fIneed_expand\fP\fB, double \fIbackground_gamma\fP\fB);\fP
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\fI\fB
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@ -773,7 +781,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
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.SH LIBPNG.TXT
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libpng.txt - A description on how to use and modify libpng
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libpng version 1.2.7beta1 - August 26, 2004
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libpng version 1.2.7beta2 - August 29, 2004
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Updated and distributed by Glenn Randers-Pehrson
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<glennrp@users.sourceforge.net>
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Copyright (c) 1998-2004 Glenn Randers-Pehrson
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@ -1076,28 +1084,28 @@ To inform libpng about your function, use
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png_set_read_status_fn(png_ptr, read_row_callback);
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%-%.SS Width and height limits
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%-%
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%-%The PNG specification allows the width and height of an image to be as
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%-%large as 2^31-1 (0x7fffffff), or about 2.147 billion rows and columns.
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%-%Since very few applications really need to process such large images,
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%-%we have imposed an arbitrary 1-million limit on rows and columns.
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%-%Larger images will be rejected immediately with a png_error() call. If
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%-%you wish to override this limit, you can use
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%-%
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%-% png_set_user_limits(png_ptr, width_max, height_max);
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%-%
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%-%to set your own limits, or use width_max = height_max = 0x7fffffffL
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%-%to allow all valid dimensions (libpng may reject some very large images
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%-%anyway because of potential buffer overflow conditions).
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%-%
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%-%You should put this statement after you create the PNG structure and
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%-%before calling png_read_info(), png_read_png(), or png_process_data().
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%-%If you need to retrieve the limits that are being applied, use
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%-%
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%-% width_max = png_get_user_width_max(png_ptr);
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%-% height_max = png_get_user_height_max(png_ptr);
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%-%
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.SS Width and height limits
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The PNG specification allows the width and height of an image to be as
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large as 2^31-1 (0x7fffffff), or about 2.147 billion rows and columns.
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Since very few applications really need to process such large images,
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we have imposed an arbitrary 1-million limit on rows and columns.
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Larger images will be rejected immediately with a png_error() call. If
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you wish to override this limit, you can use
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png_set_user_limits(png_ptr, width_max, height_max);
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to set your own limits, or use width_max = height_max = 0x7fffffffL
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to allow all valid dimensions (libpng may reject some very large images
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anyway because of potential buffer overflow conditions).
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You should put this statement after you create the PNG structure and
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before calling png_read_info(), png_read_png(), or png_process_data().
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If you need to retrieve the limits that are being applied, use
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width_max = png_get_user_width_max(png_ptr);
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height_max = png_get_user_height_max(png_ptr);
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.SS Unknown-chunk handling
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Now you get to set the way the library processes unknown chunks in the
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@ -3471,127 +3479,126 @@ When PNG_DEBUG = 1, the macros are defined, but only png_debug statements
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having level = 0 will be printed. There aren't any such statements in
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this version of libpng, but if you insert some they will be printed.
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%-%.SH VI. Runtime optimization
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%-%
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%-%A new feature in libpng 1.2.0 is the ability to dynamically switch between
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%-%standard and optimized versions of some routines. Currently these are
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%-%limited to three computationally intensive tasks when reading PNG files:
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%-%decoding row filters, expanding interlacing, and combining interlaced or
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%-%transparent row data with previous row data. Currently the optimized
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%-%versions are available only for x86 (Intel, AMD, etc.) platforms with
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%-%MMX support, though this may change in future versions. (For example,
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%-%the non-MMX assembler optimizations for zlib might become similarly
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%-%runtime-selectable in future releases, in which case libpng could be
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%-%extended to support them. Alternatively, the compile-time choice of
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%-%floating-point versus integer routines for gamma correction might become
|
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%-%runtime-selectable.)
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%-%
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%-%Because such optimizations tend to be very platform- and compiler-dependent,
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%-%both in how they are written and in how they perform, the new runtime code
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%-%in libpng has been written to allow programs to query, enable, and disable
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%-%either specific optimizations or all such optimizations. For example, to
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%-%enable all possible optimizations (bearing in mind that some "optimizations"
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%-%may actually run more slowly in rare cases):
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%-%
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%-% #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
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%-% png_uint_32 mask, flags;
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%-%
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%-% flags = png_get_asm_flags(png_ptr);
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%-% mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
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%-% png_set_asm_flags(png_ptr, flags | mask);
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%-% #endif
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%-%
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%-%To enable only optimizations relevant to reading PNGs, use PNG_SELECT_READ
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%-%by itself when calling png_get_asm_flagmask(); similarly for optimizing
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%-%only writing. To disable all optimizations:
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%-%
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%-% #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
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%-% flags = png_get_asm_flags(png_ptr);
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%-% mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
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%-% png_set_asm_flags(png_ptr, flags & ~mask);
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%-% #endif
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%-%
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||||
%-%To enable or disable only MMX-related features, use png_get_mmx_flagmask()
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%-%in place of png_get_asm_flagmask(). The mmx version takes one additional
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%-%parameter:
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%-%
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%-% #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
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%-% int selection = PNG_SELECT_READ | PNG_SELECT_WRITE;
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%-% int compilerID;
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%-%
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%-% mask = png_get_mmx_flagmask(selection, &compilerID);
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%-% #endif
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%-%
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%-%On return, compilerID will indicate which version of the MMX assembler
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%-%optimizations was compiled. Currently two flavors exist: Microsoft
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%-%Visual C++ (compilerID == 1) and GNU C (a.k.a. gcc/gas, compilerID == 2).
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%-%On non-x86 platforms or on systems compiled without MMX optimizations, a
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%-%value of -1 is used.
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%-%
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%-%Note that both png_get_asm_flagmask() and png_get_mmx_flagmask() return
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%-%all valid, settable optimization bits for the version of the library that's
|
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%-%currently in use. In the case of shared (dynamically linked) libraries,
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%-%this may include optimizations that did not exist at the time the code was
|
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%-%written and compiled. It is also possible, of course, to enable only known,
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%-%specific optimizations; for example:
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%-%
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%-% #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
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%-% flags = PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \
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%-% | PNG_ASM_FLAG_MMX_READ_INTERLACE \
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%-% | PNG_ASM_FLAG_MMX_READ_FILTER_SUB \
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%-% | PNG_ASM_FLAG_MMX_READ_FILTER_UP \
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%-% | PNG_ASM_FLAG_MMX_READ_FILTER_AVG \
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%-% | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
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%-% png_set_asm_flags(png_ptr, flags);
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||||
%-% #endif
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||||
%-%
|
||||
%-%This method would enable only the MMX read-optimizations available at the
|
||||
%-%time of libpng 1.2.0's release, regardless of whether a later version of
|
||||
%-%the DLL were actually being used. (Also note that these functions did not
|
||||
%-%exist in versions older than 1.2.0, so any attempt to run a dynamically
|
||||
%-%linked app on such an older version would fail.)
|
||||
%-%
|
||||
%-%To determine whether the processor supports MMX instructions at all, use
|
||||
%-%the png_mmx_support() function:
|
||||
%-%
|
||||
%-% #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
|
||||
%-% mmxsupport = png_mmx_support();
|
||||
%-% #endif
|
||||
%-%
|
||||
%-%It returns -1 if MMX support is not compiled into libpng, 0 if MMX code
|
||||
%-%is compiled but MMX is not supported by the processor, or 1 if MMX support
|
||||
%-%is fully available. Note that png_mmx_support(), png_get_mmx_flagmask(),
|
||||
%-%and png_get_asm_flagmask() all may be called without allocating and ini-
|
||||
%-%tializing any PNG structures (for example, as part of a usage screen or
|
||||
%-%"about" box).
|
||||
%-%
|
||||
%-%The following code can be used to prevent an application from using the
|
||||
%-%thread_unsafe features, even if libpng was built with PNG_THREAD_UNSAFE_OK
|
||||
%-%defined:
|
||||
%-%
|
||||
%-%#if defined(PNG_USE_PNGGCCRD) && defined(PNG_ASSEMBLER_CODE_SUPPORTED) \
|
||||
%-% && defined(PNG_THREAD_UNSAFE_OK)
|
||||
%-% /* Disable thread-unsafe features of pnggccrd */
|
||||
%-% if (png_access_version() >= 10200)
|
||||
%-% {
|
||||
%-% png_uint_32 mmx_disable_mask = 0;
|
||||
%-% png_uint_32 asm_flags;
|
||||
%-%
|
||||
%-% mmx_disable_mask |= ( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \
|
||||
%-% | PNG_ASM_FLAG_MMX_READ_FILTER_SUB \
|
||||
%-% | PNG_ASM_FLAG_MMX_READ_FILTER_AVG \
|
||||
%-% | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH );
|
||||
%-% asm_flags = png_get_asm_flags(png_ptr);
|
||||
%-% png_set_asm_flags(png_ptr, asm_flags & ~mmx_disable_mask);
|
||||
%-% }
|
||||
%-%#endif
|
||||
%-%
|
||||
%-%For more extensive examples of runtime querying, enabling and disabling
|
||||
%-%of optimized features, see contrib/gregbook/readpng2.c in the libpng
|
||||
%-%source-code distribution.
|
||||
%-%
|
||||
%-%.SH VII. MNG support
|
||||
%+%.SH VI. MNG support
|
||||
.SH VI. Runtime optimization
|
||||
|
||||
A new feature in libpng 1.2.0 is the ability to dynamically switch between
|
||||
standard and optimized versions of some routines. Currently these are
|
||||
limited to three computationally intensive tasks when reading PNG files:
|
||||
decoding row filters, expanding interlacing, and combining interlaced or
|
||||
transparent row data with previous row data. Currently the optimized
|
||||
versions are available only for x86 (Intel, AMD, etc.) platforms with
|
||||
MMX support, though this may change in future versions. (For example,
|
||||
the non-MMX assembler optimizations for zlib might become similarly
|
||||
runtime-selectable in future releases, in which case libpng could be
|
||||
extended to support them. Alternatively, the compile-time choice of
|
||||
floating-point versus integer routines for gamma correction might become
|
||||
runtime-selectable.)
|
||||
|
||||
Because such optimizations tend to be very platform- and compiler-dependent,
|
||||
both in how they are written and in how they perform, the new runtime code
|
||||
in libpng has been written to allow programs to query, enable, and disable
|
||||
either specific optimizations or all such optimizations. For example, to
|
||||
enable all possible optimizations (bearing in mind that some "optimizations"
|
||||
may actually run more slowly in rare cases):
|
||||
|
||||
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
|
||||
png_uint_32 mask, flags;
|
||||
|
||||
flags = png_get_asm_flags(png_ptr);
|
||||
mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
|
||||
png_set_asm_flags(png_ptr, flags | mask);
|
||||
#endif
|
||||
|
||||
To enable only optimizations relevant to reading PNGs, use PNG_SELECT_READ
|
||||
by itself when calling png_get_asm_flagmask(); similarly for optimizing
|
||||
only writing. To disable all optimizations:
|
||||
|
||||
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
|
||||
flags = png_get_asm_flags(png_ptr);
|
||||
mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
|
||||
png_set_asm_flags(png_ptr, flags & ~mask);
|
||||
#endif
|
||||
|
||||
To enable or disable only MMX-related features, use png_get_mmx_flagmask()
|
||||
in place of png_get_asm_flagmask(). The mmx version takes one additional
|
||||
parameter:
|
||||
|
||||
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
|
||||
int selection = PNG_SELECT_READ | PNG_SELECT_WRITE;
|
||||
int compilerID;
|
||||
|
||||
mask = png_get_mmx_flagmask(selection, &compilerID);
|
||||
#endif
|
||||
|
||||
On return, compilerID will indicate which version of the MMX assembler
|
||||
optimizations was compiled. Currently two flavors exist: Microsoft
|
||||
Visual C++ (compilerID == 1) and GNU C (a.k.a. gcc/gas, compilerID == 2).
|
||||
On non-x86 platforms or on systems compiled without MMX optimizations, a
|
||||
value of -1 is used.
|
||||
|
||||
Note that both png_get_asm_flagmask() and png_get_mmx_flagmask() return
|
||||
all valid, settable optimization bits for the version of the library that's
|
||||
currently in use. In the case of shared (dynamically linked) libraries,
|
||||
this may include optimizations that did not exist at the time the code was
|
||||
written and compiled. It is also possible, of course, to enable only known,
|
||||
specific optimizations; for example:
|
||||
|
||||
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
|
||||
flags = PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \
|
||||
| PNG_ASM_FLAG_MMX_READ_INTERLACE \
|
||||
| PNG_ASM_FLAG_MMX_READ_FILTER_SUB \
|
||||
| PNG_ASM_FLAG_MMX_READ_FILTER_UP \
|
||||
| PNG_ASM_FLAG_MMX_READ_FILTER_AVG \
|
||||
| PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
|
||||
png_set_asm_flags(png_ptr, flags);
|
||||
#endif
|
||||
|
||||
This method would enable only the MMX read-optimizations available at the
|
||||
time of libpng 1.2.0's release, regardless of whether a later version of
|
||||
the DLL were actually being used. (Also note that these functions did not
|
||||
exist in versions older than 1.2.0, so any attempt to run a dynamically
|
||||
linked app on such an older version would fail.)
|
||||
|
||||
To determine whether the processor supports MMX instructions at all, use
|
||||
the png_mmx_support() function:
|
||||
|
||||
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
|
||||
mmxsupport = png_mmx_support();
|
||||
#endif
|
||||
|
||||
It returns -1 if MMX support is not compiled into libpng, 0 if MMX code
|
||||
is compiled but MMX is not supported by the processor, or 1 if MMX support
|
||||
is fully available. Note that png_mmx_support(), png_get_mmx_flagmask(),
|
||||
and png_get_asm_flagmask() all may be called without allocating and ini-
|
||||
tializing any PNG structures (for example, as part of a usage screen or
|
||||
"about" box).
|
||||
|
||||
The following code can be used to prevent an application from using the
|
||||
thread_unsafe features, even if libpng was built with PNG_THREAD_UNSAFE_OK
|
||||
defined:
|
||||
|
||||
#if defined(PNG_USE_PNGGCCRD) && defined(PNG_ASSEMBLER_CODE_SUPPORTED) \
|
||||
&& defined(PNG_THREAD_UNSAFE_OK)
|
||||
/* Disable thread-unsafe features of pnggccrd */
|
||||
if (png_access_version() >= 10200)
|
||||
{
|
||||
png_uint_32 mmx_disable_mask = 0;
|
||||
png_uint_32 asm_flags;
|
||||
|
||||
mmx_disable_mask |= ( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \
|
||||
| PNG_ASM_FLAG_MMX_READ_FILTER_SUB \
|
||||
| PNG_ASM_FLAG_MMX_READ_FILTER_AVG \
|
||||
| PNG_ASM_FLAG_MMX_READ_FILTER_PAETH );
|
||||
asm_flags = png_get_asm_flags(png_ptr);
|
||||
png_set_asm_flags(png_ptr, asm_flags & ~mmx_disable_mask);
|
||||
}
|
||||
#endif
|
||||
|
||||
For more extensive examples of runtime querying, enabling and disabling
|
||||
of optimized features, see contrib/gregbook/readpng2.c in the libpng
|
||||
source-code distribution.
|
||||
|
||||
.SH VII. MNG support
|
||||
|
||||
The MNG specification (available at http://www.libpng.org/pub/mng) allows
|
||||
certain extensions to PNG for PNG images that are embedded in MNG datastreams.
|
||||
@ -3616,8 +3623,7 @@ or any other MNG chunks; your application must provide its own support for
|
||||
them. You may wish to consider using libmng (available at
|
||||
http://www.libmng.com) instead.
|
||||
|
||||
%-%.SH VIII. Changes to Libpng from version 0.88
|
||||
%+%.SH VII. Changes to Libpng from version 0.88
|
||||
.SH VIII. Changes to Libpng from version 0.88
|
||||
|
||||
It should be noted that versions of libpng later than 0.96 are not
|
||||
distributed by the original libpng author, Guy Schalnat, nor by
|
||||
@ -3666,16 +3672,15 @@ application:
|
||||
|
||||
png_uint_32 application_vn = PNG_LIBPNG_VER;
|
||||
|
||||
%-%.SH IX. Y2K Compliance in libpng
|
||||
%+%.SH VIII. Y2K Compliance in libpng
|
||||
.SH IX. Y2K Compliance in libpng
|
||||
|
||||
August 26, 2004
|
||||
August 29, 2004
|
||||
|
||||
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 1.2.7beta1 are Y2K compliant. It is my belief that earlier
|
||||
upward through 1.2.7beta2 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
|
||||
@ -3818,7 +3823,7 @@ the first widely used release:
|
||||
1.2.6rc1-5 13 10206 12.so.0.1.2.6rc1-5
|
||||
1.0.16 10 10016 10.so.0.1.0.16
|
||||
1.2.6 13 10206 12.so.0.1.2.6
|
||||
1.2.7beta1 13 10207 12.so.0.1.2.7beta1
|
||||
1.2.7beta1-2 13 10207 12.so.0.1.2.7beta1-2
|
||||
|
||||
Henceforth the source version will match the shared-library minor
|
||||
and patch numbers; the shared-library major version number will be
|
||||
@ -3874,13 +3879,14 @@ possible without all of you.
|
||||
|
||||
Thanks to Frank J. T. Wojcik for helping with the documentation.
|
||||
|
||||
Libpng version 1.2.7beta1 - August 26, 2004:
|
||||
Libpng version 1.2.7beta2 - August 29, 2004:
|
||||
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
|
||||
Currently maintained by Glenn Randers-Pehrson (glennrp@users.sourceforge.net).
|
||||
|
||||
Supported by the PNG development group
|
||||
.br
|
||||
(png-implement@ccrc.wustl.edu).
|
||||
png-implement@ccrc.wustl.edu (subscription required; write to
|
||||
majordomo@ccrc.wustl.edu).
|
||||
|
||||
.SH COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
|
||||
|
||||
@ -3891,7 +3897,7 @@ included in the libpng distribution, the latter shall prevail.)
|
||||
If you modify libpng you may insert additional notices immediately following
|
||||
this sentence.
|
||||
|
||||
libpng version 1.2.6, August 26, 2004, is
|
||||
libpng version 1.2.6, August 29, 2004, is
|
||||
Copyright (c) 2004 Glenn Randers-Pehrson, and is
|
||||
distributed according to the same disclaimer and license as libpng-1.2.5
|
||||
with the following individual added to the list of Contributing Authors
|
||||
@ -3990,7 +3996,7 @@ certification mark of the Open Source Initiative.
|
||||
|
||||
Glenn Randers-Pehrson
|
||||
glennrp@users.sourceforge.net
|
||||
August 26, 2004
|
||||
August 29, 2004
|
||||
|
||||
.\" end of man page
|
||||
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
libpng.txt - A description on how to use and modify libpng
|
||||
|
||||
libpng version 1.2.7beta1 - August 26, 2004
|
||||
libpng version 1.2.7beta2 - August 29, 2004
|
||||
Updated and distributed by Glenn Randers-Pehrson
|
||||
<glennrp@users.sourceforge.net>
|
||||
Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
@ -2893,13 +2893,13 @@ application:
|
||||
|
||||
IX. Y2K Compliance in libpng
|
||||
|
||||
August 26, 2004
|
||||
August 29, 2004
|
||||
|
||||
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 1.2.7beta1 are Y2K compliant. It is my belief that earlier
|
||||
upward through 1.2.7beta2 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
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
.TH LIBPNGPF 3 "August 26, 2004"
|
||||
.TH LIBPNGPF 3 "August 29, 2004"
|
||||
.SH NAME
|
||||
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.7beta1
|
||||
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.7beta2
|
||||
(private functions)
|
||||
.SH SYNOPSIS
|
||||
\fB\fB#include <png.h>\fP\fP
|
||||
|
||||
2
png.5
2
png.5
@ -1,4 +1,4 @@
|
||||
.TH PNG 5 "August 26, 2004"
|
||||
.TH PNG 5 "August 29, 2004"
|
||||
.SH NAME
|
||||
png \- Portable Network Graphics (PNG) format
|
||||
.SH DESCRIPTION
|
||||
|
||||
6
png.c
6
png.c
@ -1,7 +1,7 @@
|
||||
|
||||
/* png.c - location for general purpose libpng functions
|
||||
*
|
||||
* libpng version 1.2.7beta1 - August 26, 2004
|
||||
* libpng version 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
@ -13,7 +13,7 @@
|
||||
#include "png.h"
|
||||
|
||||
/* Generate a compiler error if there is an old png.h in the search path. */
|
||||
typedef version_1_2_7beta1 Your_png_h_is_not_version_1_2_7beta1;
|
||||
typedef version_1_2_7beta2 Your_png_h_is_not_version_1_2_7beta2;
|
||||
|
||||
/* Version information for C files. This had better match the version
|
||||
* string defined in png.h. */
|
||||
@ -678,7 +678,7 @@ png_charp PNGAPI
|
||||
png_get_copyright(png_structp png_ptr)
|
||||
{
|
||||
if (&png_ptr != NULL) /* silence compiler warning about unused png_ptr */
|
||||
return ((png_charp) "\n libpng version 1.2.7beta1 - August 26, 2004\n\
|
||||
return ((png_charp) "\n libpng version 1.2.7beta2 - August 29, 2004\n\
|
||||
Copyright (c) 1998-2004 Glenn Randers-Pehrson\n\
|
||||
Copyright (c) 1996-1997 Andreas Dilger\n\
|
||||
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");
|
||||
|
||||
28
png.h
28
png.h
@ -1,6 +1,6 @@
|
||||
/* png.h - header file for PNG reference library
|
||||
*
|
||||
* libpng version 1.2.7beta1 - August 26, 2004
|
||||
* libpng version 1.2.7beta2 - August 29, 2004
|
||||
* Copyright (c) 1998-2004 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.)
|
||||
@ -8,7 +8,7 @@
|
||||
* 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 1.2.7beta1 - August 26, 2004: Glenn
|
||||
* libpng versions 0.97, January 1998, through 1.2.7beta2 - August 29, 2004: Glenn
|
||||
* See also "Contributing Authors", below.
|
||||
*
|
||||
* Note about libpng version numbers:
|
||||
@ -101,7 +101,7 @@
|
||||
* 1.2.6beta1-4 13 10206 12.so.0.1.2.6beta1-4
|
||||
* 1.0.16 10 10016 10.so.0.1.0.16
|
||||
* 1.2.6 13 10206 12.so.0.1.2.6
|
||||
* 1.2.7beta1 13 10207 12.so.0.1.2.7beta1
|
||||
* 1.2.7beta1-2 13 10207 12.so.0.1.2.7beta1-2
|
||||
*
|
||||
* Henceforth the source version will match the shared-library major
|
||||
* and minor numbers; the shared-library major version number will be
|
||||
@ -131,7 +131,7 @@
|
||||
* If you modify libpng you may insert additional notices immediately following
|
||||
* this sentence.
|
||||
*
|
||||
* libpng versions 1.2.6, August 15, 2004, through 1.2.7beta1, August 26, 2004, are
|
||||
* libpng versions 1.2.6, August 15, 2004, through 1.2.7beta2, August 29, 2004, are
|
||||
* Copyright (c) 2004 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:
|
||||
@ -243,13 +243,13 @@
|
||||
* Y2K compliance in libpng:
|
||||
* =========================
|
||||
*
|
||||
* August 26, 2004
|
||||
* August 29, 2004
|
||||
*
|
||||
* 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 1.2.7beta1 are Y2K compliant. It is my belief that earlier
|
||||
* upward through 1.2.7beta2 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
|
||||
@ -305,9 +305,9 @@
|
||||
*/
|
||||
|
||||
/* Version information for png.h - this should match the version in png.c */
|
||||
#define PNG_LIBPNG_VER_STRING "1.2.7beta1"
|
||||
#define PNG_LIBPNG_VER_STRING "1.2.7beta2"
|
||||
#define PNG_HEADER_VERSION_STRING \
|
||||
" libpng version 1.2.7beta1 - August 26, 2004 (header)\n"
|
||||
" libpng version 1.2.7beta2 - August 29, 2004 (header)\n"
|
||||
|
||||
#define PNG_LIBPNG_VER_SONUM 0
|
||||
#define PNG_LIBPNG_VER_DLLNUM %DLLNUM%
|
||||
@ -319,7 +319,7 @@
|
||||
/* This should match the numeric part of the final component of
|
||||
* PNG_LIBPNG_VER_STRING, omitting any leading zero: */
|
||||
|
||||
#define PNG_LIBPNG_VER_BUILD 1
|
||||
#define PNG_LIBPNG_VER_BUILD 2
|
||||
|
||||
#define PNG_LIBPNG_BUILD_ALPHA 1
|
||||
#define PNG_LIBPNG_BUILD_BETA 2
|
||||
@ -1311,7 +1311,7 @@ struct png_struct_def
|
||||
/* 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_7beta1;
|
||||
typedef png_structp version_1_2_7beta2;
|
||||
|
||||
typedef png_struct FAR * FAR * png_structpp;
|
||||
|
||||
@ -1483,12 +1483,17 @@ extern PNG_EXPORT(void,png_set_invert_alpha) PNGARG((png_structp png_ptr));
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
|
||||
/* Add a filler byte to 24-bit RGB images. */
|
||||
/* Add a filler byte to 8-bit Gray or 24-bit RGB images. */
|
||||
extern PNG_EXPORT(void,png_set_filler) PNGARG((png_structp png_ptr,
|
||||
png_uint_32 filler, int flags));
|
||||
/* The values of the PNG_FILLER_ defines should NOT be changed */
|
||||
#define PNG_FILLER_BEFORE 0
|
||||
#define PNG_FILLER_AFTER 1
|
||||
/* Add an alpha byte to 8-bit Gray or 24-bit RGB images. */
|
||||
#if !defined(PNG_1_0_X)
|
||||
extern PNG_EXPORT(void,png_set_add_alpha) PNGARG((png_structp png_ptr,
|
||||
png_uint_32 filler, int flags));
|
||||
#endif
|
||||
#endif /* PNG_READ_FILLER_SUPPORTED || PNG_WRITE_FILLER_SUPPORTED */
|
||||
|
||||
#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
|
||||
@ -2572,6 +2577,7 @@ extern PNG_EXPORT(png_uint_32,png_get_user_height_max) PNGARG((png_structp
|
||||
#define PNG_RGB_TO_GRAY_ERR 0x200000L
|
||||
#define PNG_RGB_TO_GRAY_WARN 0x400000L
|
||||
#define PNG_RGB_TO_GRAY 0x600000L /* two bits, RGB_TO_GRAY_ERR|WARN */
|
||||
#define PNG_ADD_ALPHA 0x1000000L /* Added to libpng-1.2.7 */
|
||||
|
||||
/* flags for png_create_struct */
|
||||
#define PNG_STRUCT_PNG 0x0001
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngconf.h - machine configurable file for libpng
|
||||
*
|
||||
* libpng version 1.2.7beta1 - August 26, 2004
|
||||
* libpng version 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngerror.c - stub functions for i/o and memory allocation
|
||||
*
|
||||
* libpng version 1.2.7beta1 - August 26, 2004
|
||||
* libpng version 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
|
||||
@ -6,7 +6,7 @@
|
||||
* and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm
|
||||
* for Intel's performance analysis of the MMX vs. non-MMX code.
|
||||
*
|
||||
* libpng version 1.2.7beta1 - August 26, 2004
|
||||
* libpng version 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* Copyright (c) 1998, Intel Corporation
|
||||
|
||||
2
pngget.c
2
pngget.c
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngget.c - retrieval of values from info struct
|
||||
*
|
||||
* libpng 1.2.7beta1 - August 26, 2004
|
||||
* libpng 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
|
||||
2
pngmem.c
2
pngmem.c
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngmem.c - stub functions for memory allocation
|
||||
*
|
||||
* libpng version 1.2.7beta1 - August 26, 2004
|
||||
* libpng version 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngpread.c - read a png file in push mode
|
||||
*
|
||||
* libpng version 1.2.7beta1 - August 26, 2004
|
||||
* libpng version 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngread.c - read a PNG file
|
||||
*
|
||||
* libpng 1.2.7beta1 - August 26, 2004
|
||||
* libpng 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
@ -803,7 +803,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
|
||||
* not called png_set_interlace_handling(), the display_row buffer will
|
||||
* be ignored, so pass NULL to it.
|
||||
*
|
||||
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.7beta1
|
||||
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.7beta2
|
||||
*/
|
||||
|
||||
void PNGAPI
|
||||
@ -853,7 +853,7 @@ png_read_rows(png_structp png_ptr, png_bytepp row,
|
||||
* only call this function once. If you desire to have an image for
|
||||
* each pass of a interlaced image, use png_read_rows() instead.
|
||||
*
|
||||
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.7beta1
|
||||
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.7beta2
|
||||
*/
|
||||
void PNGAPI
|
||||
png_read_image(png_structp png_ptr, png_bytepp image)
|
||||
|
||||
2
pngrio.c
2
pngrio.c
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngrio.c - functions for data input
|
||||
*
|
||||
* libpng 1.2.7beta1 - August 26, 2004
|
||||
* libpng 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
|
||||
10
pngrtran.c
10
pngrtran.c
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngrtran.c - transforms the data in a row for PNG readers
|
||||
*
|
||||
* libpng version 1.2.7beta1 - August 26, 2004
|
||||
* libpng version 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
@ -1135,8 +1135,10 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
|
||||
(info_ptr->color_type == PNG_COLOR_TYPE_GRAY)))
|
||||
{
|
||||
info_ptr->channels++;
|
||||
#if 0 /* if adding a true alpha channel not just filler */
|
||||
info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
|
||||
/* if adding a true alpha channel not just filler */
|
||||
#if !defined(PNG_1_0_X)
|
||||
if (png_ptr->transformations & PNG_ADD_ALPHA)
|
||||
info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
@ -1927,7 +1929,6 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
|
||||
row_info->rowbytes = row_width * 4;
|
||||
}
|
||||
}
|
||||
row_info->color_type |= PNG_COLOR_MASK_ALPHA;
|
||||
} /* COLOR_TYPE == GRAY */
|
||||
else if (row_info->color_type == PNG_COLOR_TYPE_RGB)
|
||||
{
|
||||
@ -2012,7 +2013,6 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
|
||||
row_info->rowbytes = row_width * 8;
|
||||
}
|
||||
}
|
||||
row_info->color_type |= PNG_COLOR_MASK_ALPHA;
|
||||
} /* COLOR_TYPE == RGB */
|
||||
}
|
||||
#endif
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
/* pngrutil.c - utilities to read a PNG file
|
||||
*
|
||||
* libpng version 1.2.7beta1 - August 26, 2004
|
||||
* libpng version 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
|
||||
2
pngset.c
2
pngset.c
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngset.c - storage of image information into info struct
|
||||
*
|
||||
* libpng 1.2.7beta1 - August 26, 2004
|
||||
* libpng 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngtest.c - a simple test program to test libpng
|
||||
*
|
||||
* libpng 1.2.7beta1 - August 26, 2004
|
||||
* libpng 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
@ -1551,4 +1551,4 @@ main(int argc, char *argv[])
|
||||
}
|
||||
|
||||
/* Generate a compiler error if there is an old png.h in the search path. */
|
||||
typedef version_1_2_7beta1 your_png_h_is_not_version_1_2_7beta1;
|
||||
typedef version_1_2_7beta2 your_png_h_is_not_version_1_2_7beta2;
|
||||
|
||||
14
pngtrans.c
14
pngtrans.c
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
|
||||
*
|
||||
* libpng 1.2.7beta1 - August 26, 2004
|
||||
* libpng 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
@ -118,6 +118,18 @@ png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
|
||||
png_ptr->usr_channels = 2;
|
||||
}
|
||||
}
|
||||
|
||||
#if !defined(PNG_1_0_X)
|
||||
/* Added to libpng-1.2.7 */
|
||||
void PNGAPI
|
||||
png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
|
||||
{
|
||||
png_debug(1, "in png_set_add_alpha\n");
|
||||
png_set_filler(png_ptr, filler, filler_loc);
|
||||
png_ptr->transformations |= PNG_ADD_ALPHA;
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
*
|
||||
* For Intel x86 CPU and Microsoft Visual C++ compiler
|
||||
*
|
||||
* libpng version 1.2.7beta1 - August 26, 2004
|
||||
* libpng version 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* Copyright (c) 1998, Intel Corporation
|
||||
|
||||
2
pngwio.c
2
pngwio.c
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngwio.c - functions for data output
|
||||
*
|
||||
* libpng 1.2.7beta1 - August 26, 2004
|
||||
* libpng 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngwrite.c - general routines to write a PNG file
|
||||
*
|
||||
* libpng 1.2.7beta1 - August 26, 2004
|
||||
* libpng 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngwtran.c - transforms the data in a row for PNG writers
|
||||
*
|
||||
* libpng version 1.2.7beta1 - August 26, 2004
|
||||
* libpng version 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
|
||||
/* pngwutil.c - utilities to write a PNG file
|
||||
*
|
||||
* libpng version 1.2.7beta1 - August 26, 2004
|
||||
* libpng version 1.2.7beta2 - August 29, 2004
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
@ -1528,6 +1528,7 @@ png_write_sCAL(png_structp png_ptr, int unit, double width,double height)
|
||||
#endif
|
||||
png_size_t total_len;
|
||||
char wbuf[32], hbuf[32];
|
||||
png_byte bunit = unit;
|
||||
|
||||
png_debug(1, "in png_write_sCAL\n");
|
||||
|
||||
@ -1548,7 +1549,7 @@ png_write_sCAL(png_structp png_ptr, int unit, double width,double height)
|
||||
|
||||
png_debug1(3, "sCAL total length = %d\n", (int)total_len);
|
||||
png_write_chunk_start(png_ptr, (png_bytep)png_sCAL, (png_uint_32)total_len);
|
||||
png_write_chunk_data(png_ptr, (png_bytep)&unit, 1);
|
||||
png_write_chunk_data(png_ptr, (png_bytep)&bunit, 1);
|
||||
png_write_chunk_data(png_ptr, (png_bytep)wbuf, png_strlen(wbuf)+1);
|
||||
png_write_chunk_data(png_ptr, (png_bytep)hbuf, png_strlen(hbuf));
|
||||
|
||||
@ -1565,6 +1566,7 @@ png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width,
|
||||
#endif
|
||||
png_size_t total_len;
|
||||
char wbuf[32], hbuf[32];
|
||||
png_byte bunit = unit;
|
||||
|
||||
png_debug(1, "in png_write_sCAL_s\n");
|
||||
|
||||
@ -1574,7 +1576,7 @@ png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width,
|
||||
|
||||
png_debug1(3, "sCAL total length = %d\n", total_len);
|
||||
png_write_chunk_start(png_ptr, (png_bytep)png_sCAL, (png_uint_32)total_len);
|
||||
png_write_chunk_data(png_ptr, (png_bytep)&unit, 1);
|
||||
png_write_chunk_data(png_ptr, (png_bytep)&bunit, 1);
|
||||
png_write_chunk_data(png_ptr, (png_bytep)wbuf, png_strlen(wbuf)+1);
|
||||
png_write_chunk_data(png_ptr, (png_bytep)hbuf, png_strlen(hbuf));
|
||||
|
||||
|
||||
@ -8,7 +8,7 @@
|
||||
|
||||
# Modeled after libxml-config.
|
||||
|
||||
version=1.2.7beta1
|
||||
version=1.2.7beta2
|
||||
prefix=""
|
||||
libdir=""
|
||||
libs=""
|
||||
|
||||
@ -6,6 +6,6 @@ includedir=${exec_prefix}/include
|
||||
|
||||
Name: libpng12
|
||||
Description: Loads and saves PNG files
|
||||
Version: 1.2.7beta1
|
||||
Version: 1.2.7beta2
|
||||
Libs: -L${libdir} -lpng12 -lz -lm
|
||||
Cflags: -I${includedir}/libpng12
|
||||
|
||||
@ -33,7 +33,7 @@ RANLIB=echo
|
||||
|
||||
LIBNAME=libpng12
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
|
||||
INCPATH=$(prefix)/include
|
||||
|
||||
@ -33,7 +33,7 @@ RANLIB=echo
|
||||
|
||||
LIBNAME=libpng12
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
|
||||
INCPATH=$(prefix)/include
|
||||
|
||||
@ -18,7 +18,7 @@ RM = rm -f
|
||||
|
||||
LIBNAME=libpng12
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
|
||||
prefix=/usr/local
|
||||
|
||||
@ -12,7 +12,7 @@ ZLIBLIB=/usr/local/lib
|
||||
ZLIBINC=/usr/local/include
|
||||
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
|
||||
ALIGN=
|
||||
|
||||
@ -79,7 +79,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
|
||||
LIBNAME = libpng12
|
||||
PNGMAJ = 0
|
||||
CYGDLL = 12
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
|
||||
SHAREDLIB=cygpng$(CYGDLL).dll
|
||||
|
||||
@ -23,7 +23,7 @@ LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz
|
||||
RANLIB=ranlib
|
||||
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
LIBNAME = libpng12
|
||||
|
||||
|
||||
@ -32,7 +32,7 @@ ZLIBLIB=../zlib
|
||||
ZLIBINC=../zlib
|
||||
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
LIBNAME = libpng12
|
||||
|
||||
|
||||
@ -15,7 +15,7 @@
|
||||
|
||||
LIBNAME = libpng12
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
|
||||
CC=gcc
|
||||
|
||||
@ -41,7 +41,7 @@ RANLIB=ranlib
|
||||
#RANLIB=echo
|
||||
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
LIBNAME = libpng12
|
||||
|
||||
|
||||
@ -24,7 +24,7 @@ LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
|
||||
RANLIB=ranlib
|
||||
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
LIBNAME = libpng12
|
||||
|
||||
|
||||
@ -5,7 +5,7 @@
|
||||
|
||||
LIBNAME = libpng12
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
|
||||
CC=gcc
|
||||
|
||||
@ -13,7 +13,7 @@ INCSDIR=${LOCALBASE}/include/libpng12
|
||||
|
||||
LIB= png12
|
||||
SHLIB_MAJOR= 0
|
||||
SHLIB_MINOR= 1.2.7beta1
|
||||
SHLIB_MINOR= 1.2.7beta2
|
||||
SRCS= pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
|
||||
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
|
||||
pngwtran.c pngmem.c pngerror.c pngpread.c
|
||||
|
||||
@ -13,7 +13,7 @@ INCSDIR=${LOCALBASE}/include/libpng
|
||||
|
||||
LIB= png
|
||||
SHLIB_MAJOR= 3
|
||||
SHLIB_MINOR= 1.2.7beta1
|
||||
SHLIB_MINOR= 1.2.7beta2
|
||||
SRCS= pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
|
||||
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
|
||||
pngwtran.c pngmem.c pngerror.c pngpread.c
|
||||
|
||||
@ -7,7 +7,7 @@ LIBDIR= ${PREFIX}/lib
|
||||
MANDIR= ${PREFIX}/man/cat
|
||||
|
||||
SHLIB_MAJOR= 0
|
||||
SHLIB_MINOR= 1.2.7beta1
|
||||
SHLIB_MINOR= 1.2.7beta2
|
||||
|
||||
LIB= png
|
||||
SRCS= png.c pngerror.c pnggccrd.c pngget.c pngmem.c pngpread.c \
|
||||
|
||||
@ -24,7 +24,7 @@ LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz -lm
|
||||
RANLIB=echo
|
||||
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
LIBNAME = libpng12
|
||||
|
||||
|
||||
@ -18,7 +18,7 @@ ZLIBINC=../zlib
|
||||
|
||||
LIBNAME=libpng12
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
CC=gcc
|
||||
|
||||
|
||||
@ -5,7 +5,7 @@
|
||||
|
||||
LIBNAME=libpng12
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
|
||||
# Where make install puts libpng.a, libpng12.so, and libpng12/png.h
|
||||
|
||||
@ -34,7 +34,7 @@ LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
|
||||
RANLIB=echo
|
||||
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
LIBNAME = libpng12
|
||||
|
||||
|
||||
@ -30,7 +30,7 @@ LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
|
||||
RANLIB=echo
|
||||
|
||||
PNGMAJ = 0
|
||||
PNGMIN = 1.2.7beta1
|
||||
PNGMIN = 1.2.7beta2
|
||||
PNGVER = $(PNGMAJ).$(PNGMIN)
|
||||
LIBNAME = libpng12
|
||||
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
; PNG.LIB module definition file for OS/2
|
||||
;----------------------------------------
|
||||
|
||||
; Version 1.2.7beta1
|
||||
; Version 1.2.7beta2
|
||||
|
||||
LIBRARY PNG
|
||||
DESCRIPTION "PNG image compression library for OS/2"
|
||||
@ -184,6 +184,34 @@ EXPORTS
|
||||
png_convert_to_rfc1123
|
||||
png_set_invalid
|
||||
|
||||
; Added at version 1.2.0:
|
||||
png_mmx_support
|
||||
png_permit_empty_plte
|
||||
png_permit_mng_features
|
||||
png_get_mmx_flagmask
|
||||
png_get_asm_flagmask
|
||||
png_get_asm_flags
|
||||
png_get_mmx_bitdepth_threshold
|
||||
png_get_mmx_rowbytes_threshold
|
||||
png_set_asm_flags
|
||||
png_init_mmx_flags
|
||||
|
||||
; Added at version 1.2.2:
|
||||
png_handle_as_unknown
|
||||
|
||||
; Added at version 1.2.2 and deleted from 1.2.3:
|
||||
; png_zalloc
|
||||
; png_zfree
|
||||
|
||||
; Added at version 1.2.4
|
||||
png_malloc_warn
|
||||
|
||||
; Added at version 1.2.6
|
||||
png_set_user_limits
|
||||
png_get_user_height_max
|
||||
png_get_user_width_max
|
||||
; Added at version 1.2.7
|
||||
png_set_add_alpha
|
||||
|
||||
; These are not present when libpng is compiled with PNG_NO_GLOBAL_ARRAYS
|
||||
png_libpng_ver
|
||||
|
||||
@ -6,7 +6,7 @@ LIBRARY
|
||||
DESCRIPTION "PNG image compression library for Windows"
|
||||
|
||||
EXPORTS
|
||||
;Version 1.2.7beta1
|
||||
;Version 1.2.7beta2
|
||||
png_build_grayscale_palette @1
|
||||
png_check_sig @2
|
||||
png_chunk_error @3
|
||||
@ -191,3 +191,37 @@ EXPORTS
|
||||
png_write_init_3 @176
|
||||
png_info_init_3 @177
|
||||
png_destroy_struct @178
|
||||
; Added at version 1.2.0
|
||||
; For use with PNG_USER_MEM_SUPPORTED
|
||||
png_destroy_struct_2 @179
|
||||
png_create_read_struct_2 @180
|
||||
png_create_write_struct_2 @181
|
||||
png_malloc_default @182
|
||||
png_free_default @183
|
||||
; MNG features
|
||||
png_permit_mng_features @184
|
||||
; MMX support
|
||||
png_mmx_support @185
|
||||
png_get_mmx_flagmask @186
|
||||
png_get_asm_flagmask @187
|
||||
png_get_asm_flags @188
|
||||
png_get_mmx_bitdepth_threshold @189
|
||||
png_get_mmx_rowbytes_threshold @190
|
||||
png_set_asm_flags @191
|
||||
png_init_mmx_flags @192
|
||||
; Strip error numbers
|
||||
png_set_strip_error_numbers @193
|
||||
; Added at version 1.2.2
|
||||
png_handle_as_unknown @194
|
||||
; Added at version 1.2.2 and deleted from 1.2.3
|
||||
; png_zalloc @195
|
||||
; png_zfree @196
|
||||
; Added at version 1.2.4
|
||||
png_malloc_warn @195
|
||||
; Added at version 1.2.6
|
||||
png_malloc_warn @195
|
||||
png_get_user_height_max @196
|
||||
png_get_user_width_max @197
|
||||
png_set_user_limits @198
|
||||
; Added at version 1.2.7
|
||||
png_set_add_alpha @199
|
||||
|
||||
Reference in New Issue
Block a user