Imported from libpng-1.0.7beta11.tar
This commit is contained in:
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32
ANNOUNCE
32
ANNOUNCE
@ -1,12 +1,10 @@
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Libpng 1.0.6j - May 4, 2000
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Libpng 1.0.7beta11 - May 6, 2000
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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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This is a public release of libpng, intended for use in production codes.
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Changes since the last public release (1.0.6):
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version 1.0.6d [April 8, 2000]
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Changed sprintf() to strcpy() in png_write_sCAL_s() to work without STDIO
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Added data_length parameter to png_decompress_chunk() function
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Revised documentation to remove reference to abandoned png_free_chnk functions
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@ -15,36 +13,33 @@ version 1.0.6d [April 8, 2000]
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Renamed makefile.ibmvac3 to makefile.ibmc, added libpng.icc IBM project file
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Added a check for info_ptr->free_me&PNG_FREE_TEXT when free'ing text in png.c
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Simplify png_sig_bytes() function to remove use of non-ISO-C strdup().
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version 1.0.6e [April 9, 2000]
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Added png_data_freer() function.
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In the code that checks for over-length tRNS chunks, added check of
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info_ptr->num_trans as well as png_ptr->num_trans (Matthias Benckmann)
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Minor revisions of libpng.txt/libpng.3.
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Check for existing data and free it if the free_me flag is set, in png_set_*()
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and png_handle_*().
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Only define PNG_WEIGHTED_FILTERS_SUPPORTED when PNG_FLOATING_POINT_SUPPORTED
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is defined.
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Changed several instances of PNG_NO_CONSOLE_ID to PNG_NO_STDIO in pngrutil.c
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and mentioned the purposes of the two macros in libpng.txt/libpng.3.
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version 1.0.6f [April 14, 2000]
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Revised png_set_iCCP() and png_set_rows() to avoid prematurely freeing data.
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Add checks in png_set_text() for NULL members of the input text structure.
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Revised libpng.txt/libpng.3.
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Removed superfluous prototype for png_set_itxt from png.h
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Removed "else" from pngread.c, after png_error(), and changed "0" to "length".
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Changed several png_errors about malformed ancillary chunks to png_warnings.
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version 1.0.6g [April 24, 2000]
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Added png_pass-* arrays to pnggccrd.c when PNG_USE_LOCAL_ARRAYS is defined.
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Relocated paragraph about png_set_background() in libpng.3/libpng.txt
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and other revisions (Matthias Benckmann)
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Relocated info_ptr->free_me to restore binary compatibility with libpng-1.0.5
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(breaks compatibility with libpng-1.0.6).
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Relocated info_ptr->free_me, png_ptr->free_me, and other info_ptr and
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png_ptr members to restore binary compatibility with libpng-1.0.5
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(breaks compatibility with libpng-1.0.6).
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version 1.0.6h [April 24, 2000]
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Changed shared library so-number pattern from 2.x.y.z to xy.z (this builds
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libpng.so.10 & libpng.so.10.6h instead of libpng.so.2 & libpng.so.2.1.0.6h)
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This is a temporary change for test purposes.
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version 1.0.6i [May 3, 2000]
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Rearranged some members at the end of png_info and png_struct, to put
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unknown_chunks_num and free_me within the original size of the png_structs
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and free_me, png_read_user_fn, and png_free_fn within the original png_info,
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because some old applications allocate the structs directly instead of
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using png_create_*().
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Added documentation of user memory functions in libpng.txt/libpng.3
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Modified png_read_png so that it will use user_allocated row_pointers
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if present, unless free_me directs that it be freed, and added description
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@ -56,14 +51,15 @@ version 1.0.6i [May 3, 2000]
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(new in version 1.0.2), rgb_to_gray (new in 1.0.5), iCCP, sCAL, sPLT,
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the high-level interface, and unknown chunks support (all new in 1.0.6).
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This was necessary because of old applications that allocate the structs
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directly instead of using png_create_*(), as authors were instructed to
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do in libpng-0.88 and earlier.
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directly as authors were instructed to do in libpng-0.88 and earlier,
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instead of using png_create_*().
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Added makefile.intel and updated makefile.watcom (Pawel Mrochen)
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version 1.0.6j [May 4, 2000]
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Overloaded png_read_init() and png_write_init() with macros that convert
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calls to png_read_init_2() or png_write_init_2() that check the version
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and structure sizes.
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Restored original shared library so-number pattern (2.x.y.z)
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In png_set_text, check if old application had allocated the png_text structure;
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if so, only allow one text chunk to be processed to avoid memory overrun.
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Added PNGAPI macro, and added it to the definitions of all exported functions.
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Send comments/corrections/commendations to
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png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu
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15
CHANGES
15
CHANGES
@ -717,19 +717,26 @@ version 1.0.6i [May 2, 2000]
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(new in version 1.0.2), rgb_to_gray (new in 1.0.5), iCCP, sCAL, sPLT,
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the high-level interface, and unknown chunks support (all new in 1.0.6).
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This was necessary because of old applications that allocate the structs
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directly instead of using png_create_*(), as authors were instructed to
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do in libpng-0.88 and earlier.
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directly as authors were instructed to do in libpng-0.88 and earlier,
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instead of using png_create_*().
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Added modes PNG_CREATED_READ_STRUCT and PNG_CREATED_WRITE_STRUCT which
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can be used to detect codes that directly allocate the structs, and
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code to check these modes in png_read_init() and png_write_init() and
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generate a libpng error if the modes aren't set and PNG_LEGACY_SUPPORTED
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was not defined.
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Added makefile.intel and updated makefile.watcom (Pawel Mrochen)
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version 1.0.6j [May 4, 2000]
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version 1.0.6j [May 3, 2000]
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Overloaded png_read_init() and png_write_init() with macros that convert
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calls to png_read_init_2() or png_write_init_2() that check the version
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and structure sizes.
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version 1.0.7beta11 [May 6, 2000]
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Removed the new PNG_CREATED_READ_STRUCT and PNG_CREATED_WRITE_STRUCT modes
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which are no longer used.
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Eliminated the three new members of png_text when PNG_NO_iTXt_SUPPORTED
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or PNG_LEGACY_SUPPORTED is defined.
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In png_set_text, check if old application had allocated the png_text structure;
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if so, only allow one text chunk to be processed to avoid memory overrun.
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Added PNGAPI macro, and added it to the definitions of all exported functions.
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Send comments/corrections/commendations to
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png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu
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12
INSTALL
12
INSTALL
@ -1,5 +1,5 @@
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Installing libpng version 1.0.6j - May 4, 2000
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Installing libpng version 1.0.7beta11 - May 6, 2000
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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-1.0.6j" or "lpng106" and "zlib-1.1.3"
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might be called "libpng-1.0.7beta11" or "lpng106" and "zlib-1.1.3"
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or "zlib113") so that you have directories called "zlib" and "libpng".
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Your directory structure should look like this:
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@ -47,8 +47,8 @@ The files that are presently available in the scripts directory
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include
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makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
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makefile.linux => Linux/ELF makefile (gcc, creates libpng.so.2.1.0.6j)
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makefile.gcmmx => Linux/ELF makefile (gcc, creates libpng.so.2.1.0.6j,
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makefile.linux => Linux/ELF makefile (gcc, creates libpng.so.2.1.0.7beta11)
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makefile.gcmmx => Linux/ELF makefile (gcc, creates libpng.so.2.1.0.7beta11,
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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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@ -59,9 +59,9 @@ include
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makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
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libpng.icc => Project file for IBM VisualAge/C++ version 4.0 or later
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makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
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makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.0.6j)
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makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.0.7beta11)
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makefile.sunos => Sun makefile
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makefile.solaris => Solaris 2.X makefile (gcc, creates libpng.so.2.1.0.6j)
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makefile.solaris => Solaris 2.X makefile (gcc, creates libpng.so.2.1.0.7beta11)
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makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
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makefile.mips => MIPS makefile
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makefile.acorn => Acorn makefile
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4
LICENSE
4
LICENSE
@ -5,7 +5,7 @@ Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
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Copyright (c) 1996, 1997 Andreas Dilger
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(libpng versions 0.90, December 1996, through 0.96, May 1997)
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Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
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(libpng versions 0.97, January 1998, through 1.0.6j, May 4, 2000)
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(libpng versions 0.97, January 1998, through 1.0.7beta11, May 6, 2000)
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For the purposes of this copyright and license, "Contributing Authors"
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is defined as the following set of individuals:
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@ -68,4 +68,4 @@ certification mark of the Open Source Initiative.
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Glenn Randers-Pehrson
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randeg@alum.rpi.edu
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May 4, 2000
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May 6, 2000
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10
README
10
README
@ -1,4 +1,4 @@
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README for libpng 1.0.6j - May 4, 2000 (shared library 2.1)
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README for libpng 1.0.7beta11 - May 6, 2000 (shared library 2.1)
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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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@ -172,9 +172,9 @@ 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 libpng.so.2.1.0.6j)
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(gcc, creates libpng.so.2.1.0.7beta11)
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makefile.gcmmx => Linux/ELF makefile (gcc, creates
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libpng.so.2.1.0.6j, uses assembler code
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libpng.so.2.1.0.7beta11, uses assembler code
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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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@ -185,10 +185,10 @@ Files in this distribution:
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makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
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libpng.icc => Project file, IBM VisualAge/C++ 4.0 or later
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makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
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makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.0.6j)
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makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.0.7beta11)
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makefile.sunos => Sun makefile
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makefile.solaris => Solaris 2.X makefile
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(gcc, creates libpng.so.2.1.0.6j)
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(gcc, creates libpng.so.2.1.0.7beta11)
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makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
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makefile.mips => MIPS makefile
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makefile.acorn => Acorn makefile
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|
2
TODO
2
TODO
@ -1,6 +1,7 @@
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TODO - list of things to do for libpng:
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Final bug fixes.
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Improve API by hiding the png_struct and png_info structs.
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Finish work on the no-floating-point version (including gamma compensation)
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Better C++ wrapper/full C++ implementation?
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Fix problem with C++ and EXTERN "C".
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@ -16,4 +17,3 @@ Better filter selection
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(counting huffman bits/precompression? filter inertia? filter costs?).
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Histogram creation.
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Text conversion between different code pages (Latin-1 -> Mac and DOS).
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Improve API by hiding the info_ptr.
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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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May 4, 2000
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May 6, 2000
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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 1.0.6j are Y2K compliant. It is my belief that earlier
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upward through 1.0.7beta11 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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2
configure
vendored
2
configure
vendored
@ -1,5 +1,5 @@
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echo "
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There is no \"configure\" script for Libpng-1.0.6j. Instead, please
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There is no \"configure\" script for Libpng-1.0.7beta11. Instead, please
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copy the appropriate makefile for your system from the \"scripts\"
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directory. Read the INSTALL file for more details.
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"
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57
libpng.3
57
libpng.3
@ -1,6 +1,6 @@
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.TH LIBPNG 3 "May 4, 2000"
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.TH LIBPNG 3 "May 6, 2000"
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.SH NAME
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libpng \- Portable Network Graphics (PNG) Reference Library 1.0.6j
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libpng \- Portable Network Graphics (PNG) Reference Library 1.0.7beta11
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.SH SYNOPSIS
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\fI\fB
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@ -354,6 +354,12 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.6j
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\fI\fB
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\fBDEPRECATED: void png_read_init (png_structp \fIpng_ptr\fP\fB);\fP
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\fI\fB
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\fBDEPRECATED: void png_read_init_2 (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fP\fIuser_png_ver\fP\fB, png_size_t \fP\fIpng_struct_size\fP\fB, png_size_t \fIpng_info_size\fP\fB);\fP
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\fBvoid png_read_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
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\fI\fB
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@ -694,6 +700,14 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.6j
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\fI\fB
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\fBDEPRECATED: void png_write_init (png_structp \fIpng_ptr\fP\fB);\fP
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\fI\fB
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\fBDEPRECATED: void png_write_init_2 (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fP\fIuser_png_ver\fP\fB, png_size_t \fP\fIpng_struct_size\fP\fB, png_size_t \fIpng_info_size\fP\fB);\fP
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\fI\fB
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\fBvoid png_write_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
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\fI\fB
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@ -725,7 +739,7 @@ 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 1.0.6j - May 4, 2000
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libpng version 1.0.7beta11 - May 6, 2000
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Updated and distributed by Glenn Randers-Pehrson
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<randeg@alum.rpi.edu>
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Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
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@ -819,9 +833,20 @@ The png_info structure is designed to provide information about the
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PNG file. At one time, the fields of png_info were intended to be
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directly accessible to the user. However, this tended to cause problems
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with applications using dynamically loaded libraries, and as a result
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a set of interface functions for png_info was developed. The fields
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of png_info are still available for older applications, but it is
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suggested that applications use the new interfaces if at all possible.
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a set of interface functions for png_info (the png_get_*() and png_set_*()
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functions) was developed. The fields of png_info are still available for
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older applications, but it is suggested that applications use the new
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interfaces if at all possible.
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Applications that do make direct access to the members of png_struct (except
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for png_ptr->jmpbuf) must be recompiled whenever the library is updated,
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and applications that make direct access to the members of png_info must
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be recompiled if they were compiled or loaded with libpng version 1.0.6,
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in which the members were in a different order. In version 1.0.7, the
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members of the png_info structure reverted to the old order, as they were
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in versions 0.97c through 1.0.5. Starting with version 2.0.0, both
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structures are going to be hidden, and the contents of the structures will
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only be accessible through the png_get/png_set functions.
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The png.h header file is an invaluable reference for programming with libpng.
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And while I'm on the topic, make sure you include the libpng header file:
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@ -3263,8 +3288,10 @@ still alive and well, but they have moved on to other things.
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The old libpng functions png_read_init(), png_write_init(),
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png_info_init(), png_read_destroy(), and png_write_destory() have been
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moved to PNG_INTERNAL in version 0.95 to discourage their use. The
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preferred method of creating and initializing the libpng structures is
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moved to PNG_INTERNAL in version 0.95 to discourage their use. These
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functions will be removed from libpng version 2.0.0.
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The preferred method of creating and initializing the libpng structures is
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via the png_create_read_struct(), png_create_write_struct(), and
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png_create_info_struct() because they isolate the size of the structures
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from the application, allow version error checking, and also allow the
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@ -3281,19 +3308,19 @@ png_read_init() as was suggested in libpng-0.88 is no longer supported
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because this caused applications that do not use custom error functions
|
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to fail if the png_ptr was not initialized to zero. It is still possible
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to set the error callbacks AFTER png_read_init(), or to change them with
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png_set_error_fn(), which is essentially the same function, but with a
|
||||
new name to force compilation errors with applications that try to use
|
||||
the old method.
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||||
png_set_error_fn(), which is essentially the same function, but with a new
|
||||
name to force compilation errors with applications that try to use the old
|
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method.
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.SH VII. Y2K Compliance in libpng
|
||||
|
||||
May 4, 2000
|
||||
May 6, 2000
|
||||
|
||||
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 1.0.6j are Y2K compliant. It is my belief that earlier
|
||||
upward through 1.0.7beta11 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
|
||||
@ -3434,7 +3461,7 @@ possible without all of you.
|
||||
|
||||
Thanks to Frank J. T. Wojcik for helping with the documentation.
|
||||
|
||||
Libpng version 1.0.6j - May 4, 2000:
|
||||
Libpng version 1.0.7beta11 - May 6, 2000:
|
||||
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
|
||||
Currently maintained by Glenn Randers-Pehrson (randeg@alum.rpi.edu).
|
||||
|
||||
@ -3449,7 +3476,7 @@ Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
|
||||
Copyright (c) 1996, 1997 Andreas Dilger
|
||||
(libpng versions 0.89c, May 1996, through 0.96, May 1997)
|
||||
Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
|
||||
(libpng versions 0.97, January 1998, through 1.0.6j, May 4, 2000)
|
||||
(libpng versions 0.97, January 1998, through 1.0.7beta11, May 6, 2000)
|
||||
|
||||
For the purposes of this copyright and license, "Contributing Authors"
|
||||
is defined as the following set of individuals:
|
||||
|
35
libpng.txt
35
libpng.txt
@ -1,6 +1,6 @@
|
||||
libpng.txt - A description on how to use and modify libpng
|
||||
|
||||
libpng version 1.0.6j - May 4, 2000
|
||||
libpng version 1.0.7beta11 - May 6, 2000
|
||||
Updated and distributed by Glenn Randers-Pehrson
|
||||
<randeg@alum.rpi.edu>
|
||||
Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
|
||||
@ -94,9 +94,20 @@ The png_info structure is designed to provide information about the
|
||||
PNG file. At one time, the fields of png_info were intended to be
|
||||
directly accessible to the user. However, this tended to cause problems
|
||||
with applications using dynamically loaded libraries, and as a result
|
||||
a set of interface functions for png_info was developed. The fields
|
||||
of png_info are still available for older applications, but it is
|
||||
suggested that applications use the new interfaces if at all possible.
|
||||
a set of interface functions for png_info (the png_get_*() and png_set_*()
|
||||
functions) was developed. The fields of png_info are still available for
|
||||
older applications, but it is suggested that applications use the new
|
||||
interfaces if at all possible.
|
||||
|
||||
Applications that do make direct access to the members of png_struct (except
|
||||
for png_ptr->jmpbuf) must be recompiled whenever the library is updated,
|
||||
and applications that make direct access to the members of png_info must
|
||||
be recompiled if they were compiled or loaded with libpng version 1.0.6,
|
||||
in which the members were in a different order. In version 1.0.7, the
|
||||
members of the png_info structure reverted to the old order, as they were
|
||||
in versions 0.97c through 1.0.5. Starting with version 2.0.0, both
|
||||
structures are going to be hidden, and the contents of the structures will
|
||||
only be accessible through the png_get/png_set functions.
|
||||
|
||||
The png.h header file is an invaluable reference for programming with libpng.
|
||||
And while I'm on the topic, make sure you include the libpng header file:
|
||||
@ -2538,8 +2549,10 @@ still alive and well, but they have moved on to other things.
|
||||
|
||||
The old libpng functions png_read_init(), png_write_init(),
|
||||
png_info_init(), png_read_destroy(), and png_write_destory() have been
|
||||
moved to PNG_INTERNAL in version 0.95 to discourage their use. The
|
||||
preferred method of creating and initializing the libpng structures is
|
||||
moved to PNG_INTERNAL in version 0.95 to discourage their use. These
|
||||
functions will be removed from libpng version 2.0.0.
|
||||
|
||||
The preferred method of creating and initializing the libpng structures is
|
||||
via the png_create_read_struct(), png_create_write_struct(), and
|
||||
png_create_info_struct() because they isolate the size of the structures
|
||||
from the application, allow version error checking, and also allow the
|
||||
@ -2556,19 +2569,19 @@ png_read_init() as was suggested in libpng-0.88 is no longer supported
|
||||
because this caused applications that do not use custom error functions
|
||||
to fail if the png_ptr was not initialized to zero. It is still possible
|
||||
to set the error callbacks AFTER png_read_init(), or to change them with
|
||||
png_set_error_fn(), which is essentially the same function, but with a
|
||||
new name to force compilation errors with applications that try to use
|
||||
the old method.
|
||||
png_set_error_fn(), which is essentially the same function, but with a new
|
||||
name to force compilation errors with applications that try to use the old
|
||||
method.
|
||||
|
||||
VII. Y2K Compliance in libpng
|
||||
|
||||
May 4, 2000
|
||||
May 6, 2000
|
||||
|
||||
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 1.0.6j are Y2K compliant. It is my belief that earlier
|
||||
upward through 1.0.7beta11 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
|
||||
|
12
libpngpf.3
12
libpngpf.3
@ -1,6 +1,6 @@
|
||||
.TH LIBPNGPF 3 "May 4, 2000"
|
||||
.TH LIBPNGPF 3 "May 6, 2000"
|
||||
.SH NAME
|
||||
libpng \- Portable Network Graphics (PNG) Reference Library 1.0.6j
|
||||
libpng \- Portable Network Graphics (PNG) Reference Library 1.0.7beta11
|
||||
(private functions)
|
||||
.SH SYNOPSIS
|
||||
\fB#include <png.h>\fP
|
||||
@ -383,10 +383,6 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.6j
|
||||
|
||||
\fI\fB
|
||||
|
||||
\fBvoid png_read_init (png_structp \fIpng_ptr\fP\fB);\fP
|
||||
|
||||
\fI\fB
|
||||
|
||||
\fBvoid png_read_push_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
|
||||
|
||||
\fI\fB
|
||||
@ -469,10 +465,6 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.6j
|
||||
|
||||
\fI\fB
|
||||
|
||||
\fBvoid png_write_init (png_structp \fIpng_ptr\fP\fB);\fP
|
||||
|
||||
\fI\fB
|
||||
|
||||
\fBvoid png_write_iTXt (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcompression\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fIlang\fP\fB, png_charp \fP\fItranslated_key\fP\fB, png_charp \fItext)\fP\fB);\fP
|
||||
|
||||
\fI\fB
|
||||
|
2
png.5
2
png.5
@ -1,4 +1,4 @@
|
||||
.TH PNG 5 "May 4, 2000"
|
||||
.TH PNG 5 "May 6, 2000"
|
||||
.SH NAME
|
||||
png \- Portable Network Graphics (PNG) format
|
||||
.SH DESCRIPTION
|
||||
|
58
png.c
58
png.c
@ -1,7 +1,7 @@
|
||||
|
||||
/* png.c - location for general purpose libpng functions
|
||||
*
|
||||
* libpng version 1.0.6j - May 4, 2000
|
||||
* libpng version 1.0.7beta11 - May 6, 2000
|
||||
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
|
||||
* Copyright (c) 1996, 1997 Andreas Dilger
|
||||
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
|
||||
@ -14,14 +14,14 @@
|
||||
#include "png.h"
|
||||
|
||||
/* Generate a compiler error if there is an old png.h in the search path. */
|
||||
typedef version_1_0_6j Your_png_h_is_not_version_1_0_6j;
|
||||
typedef version_1_0_7beta11 Your_png_h_is_not_version_1_0_7beta11;
|
||||
|
||||
/* Version information for C files. This had better match the version
|
||||
* string defined in png.h. */
|
||||
|
||||
#ifdef PNG_USE_GLOBAL_ARRAYS
|
||||
/* png_libpng_ver was changed to a function in version 1.0.5c */
|
||||
char png_libpng_ver[12] = "1.0.6j";
|
||||
char png_libpng_ver[12] = "1.0.7beta11";
|
||||
|
||||
/* png_sig was changed to a function in version 1.0.5c */
|
||||
/* Place to hold the signature string for a PNG file. */
|
||||
@ -88,7 +88,7 @@ int FARDATA png_pass_dsp_mask[] = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff};
|
||||
* or write any of the magic bytes before it starts on the IHDR.
|
||||
*/
|
||||
|
||||
void
|
||||
void PNGAPI
|
||||
png_set_sig_bytes(png_structp png_ptr, int num_bytes)
|
||||
{
|
||||
png_debug(1, "in png_set_sig_bytes\n");
|
||||
@ -106,7 +106,7 @@ png_set_sig_bytes(png_structp png_ptr, int num_bytes)
|
||||
* respectively, to be less than, to match, or be greater than the correct
|
||||
* PNG signature (this is the same behaviour as strcmp, memcmp, etc).
|
||||
*/
|
||||
int
|
||||
int PNGAPI
|
||||
png_sig_cmp(png_bytep sig, png_size_t start, png_size_t num_to_check)
|
||||
{
|
||||
png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
|
||||
@ -128,14 +128,14 @@ png_sig_cmp(png_bytep sig, png_size_t start, png_size_t num_to_check)
|
||||
* to check a partial signature. This function might be removed in the
|
||||
* future - use png_sig_cmp(). Returns true (nonzero) if the file is a PNG.
|
||||
*/
|
||||
int
|
||||
int PNGAPI
|
||||
png_check_sig(png_bytep sig, int num)
|
||||
{
|
||||
return ((int)!png_sig_cmp(sig, (png_size_t)0, (png_size_t)num));
|
||||
}
|
||||
|
||||
/* Function to allocate memory for zlib and clear it to 0. */
|
||||
voidpf
|
||||
voidpf PNGAPI
|
||||
png_zalloc(voidpf png_ptr, uInt items, uInt size)
|
||||
{
|
||||
png_uint_32 num_bytes = (png_uint_32)items * size;
|
||||
@ -155,7 +155,7 @@ png_zalloc(voidpf png_ptr, uInt items, uInt size)
|
||||
}
|
||||
|
||||
/* function to free memory for zlib */
|
||||
void
|
||||
void PNGAPI
|
||||
png_zfree(voidpf png_ptr, voidpf ptr)
|
||||
{
|
||||
png_free((png_structp)png_ptr, (png_voidp)ptr);
|
||||
@ -164,7 +164,7 @@ png_zfree(voidpf png_ptr, voidpf ptr)
|
||||
/* Reset the CRC variable to 32 bits of 1's. Care must be taken
|
||||
* in case CRC is > 32 bits to leave the top bits 0.
|
||||
*/
|
||||
void
|
||||
void /* PRIVATE */
|
||||
png_reset_crc(png_structp png_ptr)
|
||||
{
|
||||
png_ptr->crc = crc32(0, Z_NULL, 0);
|
||||
@ -175,7 +175,7 @@ png_reset_crc(png_structp png_ptr)
|
||||
* also check that this data will actually be used before going to the
|
||||
* trouble of calculating it.
|
||||
*/
|
||||
void
|
||||
void /* PRIVATE */
|
||||
png_calculate_crc(png_structp png_ptr, png_bytep ptr, png_size_t length)
|
||||
{
|
||||
int need_crc = 1;
|
||||
@ -202,7 +202,7 @@ png_calculate_crc(png_structp png_ptr, png_bytep ptr, png_size_t length)
|
||||
* and png_info_init() so that applications that want to use a shared
|
||||
* libpng don't have to be recompiled if png_info changes size.
|
||||
*/
|
||||
png_infop
|
||||
png_infop PNGAPI
|
||||
png_create_info_struct(png_structp png_ptr)
|
||||
{
|
||||
png_infop info_ptr;
|
||||
@ -227,7 +227,7 @@ png_create_info_struct(png_structp png_ptr)
|
||||
* png_destroy_write_struct() to free an info struct, but this may be
|
||||
* useful for some applications.
|
||||
*/
|
||||
void
|
||||
void PNGAPI
|
||||
png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
|
||||
{
|
||||
png_infop info_ptr = NULL;
|
||||
@ -253,7 +253,7 @@ png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
|
||||
* and applications using it are urged to use png_create_info_struct()
|
||||
* instead.
|
||||
*/
|
||||
void
|
||||
void PNGAPI
|
||||
png_info_init(png_infop info_ptr)
|
||||
{
|
||||
png_debug(1, "in png_info_init\n");
|
||||
@ -262,7 +262,7 @@ png_info_init(png_infop info_ptr)
|
||||
}
|
||||
|
||||
#ifdef PNG_FREE_ME_SUPPORTED
|
||||
void
|
||||
void PNGAPI
|
||||
png_data_freer(png_structp png_ptr, png_infop info_ptr,
|
||||
int freer, png_uint_32 mask)
|
||||
{
|
||||
@ -279,7 +279,7 @@ png_data_freer(png_structp png_ptr, png_infop info_ptr,
|
||||
}
|
||||
#endif
|
||||
|
||||
void
|
||||
void PNGAPI
|
||||
png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask, int num)
|
||||
{
|
||||
png_debug(1, "in png_free_data\n");
|
||||
@ -490,7 +490,7 @@ if (mask & PNG_FREE_ROWS)
|
||||
* pointing to before re-using it or freeing the struct itself. Recall
|
||||
* that png_free() checks for NULL pointers for us.
|
||||
*/
|
||||
void
|
||||
void /* PRIVATE */
|
||||
png_info_destroy(png_structp png_ptr, png_infop info_ptr)
|
||||
{
|
||||
png_debug(1, "in png_info_destroy\n");
|
||||
@ -512,7 +512,7 @@ png_info_destroy(png_structp png_ptr, png_infop info_ptr)
|
||||
* functions. The application should free any memory associated with this
|
||||
* pointer before png_write_destroy() or png_read_destroy() are called.
|
||||
*/
|
||||
png_voidp
|
||||
png_voidp PNGAPI
|
||||
png_get_io_ptr(png_structp png_ptr)
|
||||
{
|
||||
return (png_ptr->io_ptr);
|
||||
@ -525,7 +525,7 @@ png_get_io_ptr(png_structp png_ptr)
|
||||
* PNG_NO_STDIO, you must use a function of your own because "FILE *" isn't
|
||||
* necessarily available.
|
||||
*/
|
||||
void
|
||||
void PNGAPI
|
||||
png_init_io(png_structp png_ptr, FILE *fp)
|
||||
{
|
||||
png_debug(1, "in png_init_io\n");
|
||||
@ -537,7 +537,7 @@ png_init_io(png_structp png_ptr, FILE *fp)
|
||||
/* Convert the supplied time into an RFC 1123 string suitable for use in
|
||||
* a "Creation Time" or other text-based time string.
|
||||
*/
|
||||
png_charp
|
||||
png_charp PNGAPI
|
||||
png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
|
||||
{
|
||||
static PNG_CONST char short_months[12][4] =
|
||||
@ -572,18 +572,18 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
|
||||
|
||||
#if 0
|
||||
/* Signature string for a PNG file. */
|
||||
png_bytep
|
||||
png_bytep PNGAPI
|
||||
png_sig_bytes(void)
|
||||
{
|
||||
return ((png_bytep)"\211\120\116\107\015\012\032\012");
|
||||
}
|
||||
#endif
|
||||
|
||||
png_charp
|
||||
png_charp PNGAPI
|
||||
png_get_copyright(png_structp png_ptr)
|
||||
{
|
||||
if (png_ptr != NULL || png_ptr == NULL) /* silence compiler warning */
|
||||
return ("\n libpng version 1.0.6j - May 4, 2000\n\
|
||||
return ("\n libpng version 1.0.7beta11 - May 6, 2000\n\
|
||||
Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.\n\
|
||||
Copyright (c) 1996, 1997 Andreas Dilger\n\
|
||||
Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson\n");
|
||||
@ -596,16 +596,16 @@ png_get_copyright(png_structp png_ptr)
|
||||
* in png.h.
|
||||
*/
|
||||
|
||||
png_charp
|
||||
png_charp PNGAPI
|
||||
png_get_libpng_ver(png_structp png_ptr)
|
||||
{
|
||||
/* Version of *.c files used when building libpng */
|
||||
if(png_ptr != NULL) /* silence compiler warning about unused png_ptr */
|
||||
return("1.0.6j");
|
||||
return("1.0.6j");
|
||||
return("1.0.7beta11");
|
||||
return("1.0.7beta11");
|
||||
}
|
||||
|
||||
png_charp
|
||||
png_charp PNGAPI
|
||||
png_get_header_ver(png_structp png_ptr)
|
||||
{
|
||||
/* Version of *.h files used when building libpng */
|
||||
@ -614,7 +614,7 @@ png_get_header_ver(png_structp png_ptr)
|
||||
return(PNG_LIBPNG_VER_STRING);
|
||||
}
|
||||
|
||||
png_charp
|
||||
png_charp PNGAPI
|
||||
png_get_header_version(png_structp png_ptr)
|
||||
{
|
||||
/* Returns longer string containing both version and date */
|
||||
@ -624,7 +624,7 @@ png_get_header_version(png_structp png_ptr)
|
||||
}
|
||||
|
||||
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
|
||||
int
|
||||
int PNGAPI
|
||||
png_handle_as_unknown(png_structp png_ptr, png_bytep chunk_name)
|
||||
{
|
||||
/* check chunk_name and return "keep" value if it's on the list, else 0 */
|
||||
@ -641,7 +641,7 @@ png_handle_as_unknown(png_structp png_ptr, png_bytep chunk_name)
|
||||
#endif
|
||||
|
||||
/* This function, added to libpng-1.0.6g, is untested. */
|
||||
int
|
||||
int PNGAPI
|
||||
png_reset_zstream(png_structp png_ptr)
|
||||
{
|
||||
return (inflateReset(&png_ptr->zstream));
|
||||
|
137
png.h
137
png.h
@ -1,7 +1,7 @@
|
||||
|
||||
/* png.h - header file for PNG reference library
|
||||
*
|
||||
* libpng version 1.0.6j - May 4, 2000
|
||||
* libpng version 1.0.7beta11 - May 6, 2000
|
||||
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
|
||||
* Copyright (c) 1996, 1997 Andreas Dilger
|
||||
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
|
||||
@ -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 1.0.6j - May 4, 2000: Glenn
|
||||
* libpng versions 0.97, January 1998, through 1.0.7beta11 - May 6, 2000: Glenn
|
||||
* See also "Contributing Authors", below.
|
||||
*
|
||||
* Note about libpng version numbers:
|
||||
@ -20,40 +20,43 @@
|
||||
* The following table summarizes matters since version 0.89c, which was
|
||||
* the first widely used release:
|
||||
*
|
||||
* source png.h png.h shared-lib
|
||||
* version string int version
|
||||
* ------- ------ ----- ----------
|
||||
* 0.89c "1.0 beta 3" 0.89 89 1.0.89
|
||||
* 0.90 "1.0 beta 4" 0.90 90 0.90 [should have been 2.0.90]
|
||||
* 0.95 "1.0 beta 5" 0.95 95 0.95 [should have been 2.0.95]
|
||||
* 0.96 "1.0 beta 6" 0.96 96 0.96 [should have been 2.0.96]
|
||||
* 0.97b "1.00.97 beta 7" 1.00.97 97 1.0.1 [should have been 2.0.97]
|
||||
* 0.97c 0.97 97 2.0.97
|
||||
* 0.98 0.98 98 2.0.98
|
||||
* 0.99 0.99 98 2.0.99
|
||||
* 0.99a-m 0.99 99 2.0.99
|
||||
* 1.00 1.00 100 2.1.0 [100 should be 10000]
|
||||
* 1.0.0 1.0.0 100 2.1.0 [100 should be 10000]
|
||||
* 1.0.1 1.0.1 10001 2.1.0
|
||||
* 1.0.1a-e 1.0.1a-e 10002 2.1.0.1a-e
|
||||
* 1.0.2 1.0.2 10002 2.1.0.2
|
||||
* 1.0.2a-b 1.0.2a-b 10003 2.1.0.2a-b
|
||||
* 1.0.3 1.0.3 10003 2.1.0.3
|
||||
* 1.0.3a-d 1.0.3a-d 10004 2.1.0.3a-d
|
||||
* 1.0.4 1.0.4 10004 2.1.0.4
|
||||
* 1.0.4a-f 1.0.4a-f 10005 2.1.0.4a-f
|
||||
* 1.0.5 (+ 2 patches) 1.0.5 10005 2.1.0.5
|
||||
* 1.0.5a-d 1.0.5a-d 10006 2.1.0.5a-d
|
||||
* 1.0.5e-r 1.0.5e-r 10100 2.1.0.5e-r (not source compatible)
|
||||
* 1.0.5s-v 1.0.5s-v 10006 2.1.0.5s-v (not binary compatible)
|
||||
* 1.0.6 (+ 3 patches) 1.0.6 10006 2.1.0.6 (still binary incompat)
|
||||
* 1.0.6d-f 1.0.6d-f 10007 2.1.0.6d-f (still binary incompat)
|
||||
* 1.0.6g 1.0.6g 10007 2.1.0.6g
|
||||
* 1.0.6h 1.0.6h 10007 10.6h (testing xy.z so-numbering)
|
||||
* 1.0.6i 1.0.6i 10007 10.6i (can be compatible w/ 1.0.0)
|
||||
* 1.0.6j 1.0.6j 10007 2.1.0.6j (compatible with 1.0.0)
|
||||
* 1.0.6 (+ 4 patches) 1.0.6 10006 2.1.0.6ad (compatible with 1.0.0)
|
||||
* 1.0.7 1.0.7 10007 2.1.0.7 (still compatible)
|
||||
* source png.h png.h shared-lib
|
||||
* version string int version
|
||||
* ------- ------ ----- ----------
|
||||
* 0.89c "1.0 beta 3" 0.89 89 1.0.89
|
||||
* 0.90 "1.0 beta 4" 0.90 90 0.90 [should have been 2.0.90]
|
||||
* 0.95 "1.0 beta 5" 0.95 95 0.95 [should have been 2.0.95]
|
||||
* 0.96 "1.0 beta 6" 0.96 96 0.96 [should have been 2.0.96]
|
||||
* 0.97b "1.00.97 beta 7" 1.00.97 97 1.0.1 [should have been 2.0.97]
|
||||
* 0.97c 0.97 97 2.0.97
|
||||
* 0.98 0.98 98 2.0.98
|
||||
* 0.99 0.99 98 2.0.99
|
||||
* 0.99a-m 0.99 99 2.0.99
|
||||
* 1.00 1.00 100 2.1.0 [100 should be 10000]
|
||||
* 1.0.0 (from here on, the 100 2.1.0 [100 should be 10000]
|
||||
* 1.0.1 png.h string is 10001 2.1.0
|
||||
* 1.0.1a-e identical to the 10002 from here on, the shared library
|
||||
* 1.0.2 source version) 10002 is 2.V where V is the source code
|
||||
* 1.0.2a-b 10003 version, except as noted.
|
||||
* 1.0.3 10003
|
||||
* 1.0.3a-d 10004
|
||||
* 1.0.4 10004
|
||||
* 1.0.4a-f 10005
|
||||
* 1.0.5 (+ 2 patches) 10005
|
||||
* 1.0.5a-d 10006
|
||||
* 1.0.5e-r 10100 (not source compatible)
|
||||
* 1.0.5s-v 10006 (not binary compatible)
|
||||
* 1.0.6 (+ 3 patches) 10006 (still binary incompatible)
|
||||
* 1.0.6d-f 10007 (still binary incompatible)
|
||||
* 1.0.6g 10007
|
||||
* 1.0.6h 10007 10.6h (testing xy.z so-numbering)
|
||||
* 1.0.6i 10007 10.6i
|
||||
* 1.0.6j 10007 2.1.0.6j (incompatible with 1.0.0)
|
||||
* 1.0.7beta11 10007 2.1.0.7beta11 (still compatible)
|
||||
* planned:
|
||||
* 1.0.7prep00 10007 2.1.0.7prep00 (still compatible)
|
||||
* 1.0.6ptch04 (w/4 patches) 10006 2.1.0.6 (binary compatible)
|
||||
* 1.0.7 10007 (still compatible)
|
||||
*
|
||||
* Henceforth the source version will match the shared-library major
|
||||
* and minor numbers; the shared-library major version number will be
|
||||
@ -61,7 +64,9 @@
|
||||
* PNG_PNGLIB_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
|
||||
* are given the previous public release number plus a letter or two.
|
||||
* 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 "-beta-nn" or "-pre-nn".
|
||||
*
|
||||
* Binary incompatibility exists only when applications make direct access
|
||||
* to the info_ptr or png_ptr members through png.h, and the compiled
|
||||
@ -82,7 +87,7 @@
|
||||
* Copyright (c) 1996, 1997 Andreas Dilger
|
||||
* (libpng versions 0.89c, June 1996, through 0.96, May 1997)
|
||||
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
|
||||
* (libpng versions 0.97, January 1998, through 1.0.6j, May 4, 2000)
|
||||
* (libpng versions 0.97, January 1998, through 1.0.7beta11, May 6, 2000)
|
||||
*
|
||||
* For the purposes of this copyright and license, "Contributing Authors"
|
||||
* is defined as the following set of individuals:
|
||||
@ -157,13 +162,13 @@
|
||||
* Y2K compliance in libpng:
|
||||
* =========================
|
||||
*
|
||||
* May 4, 2000
|
||||
* May 6, 2000
|
||||
*
|
||||
* 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 1.0.6j are Y2K compliant. It is my belief that earlier
|
||||
* upward through 1.0.7beta11 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
|
||||
@ -241,7 +246,7 @@ extern "C" {
|
||||
*/
|
||||
|
||||
/* Version information for png.h - this should match the version in png.c */
|
||||
#define PNG_LIBPNG_VER_STRING "1.0.6j"
|
||||
#define PNG_LIBPNG_VER_STRING "1.0.7beta11"
|
||||
|
||||
/* Careful here. At one time, Guy wanted to use 082, but that would be octal.
|
||||
* We must not include leading zeros.
|
||||
@ -258,7 +263,8 @@ extern "C" {
|
||||
* the version above.
|
||||
*/
|
||||
#ifdef PNG_USE_GLOBAL_ARRAYS
|
||||
PNG_EXPORT_VAR (char) png_libpng_ver[12]; /* need room for 99.99.99aa */
|
||||
PNG_EXPORT_VAR (char) png_libpng_ver[12]; /* need room for 99.99.99-patch-aa0*/
|
||||
/* Note to maintainer: increase to 18 at the next opportunity */
|
||||
#else
|
||||
#define png_libpng_ver png_get_header_ver(NULL)
|
||||
#endif
|
||||
@ -367,11 +373,13 @@ typedef struct png_text_struct
|
||||
png_charp text; /* comment, may be an empty string (ie "")
|
||||
or a NULL pointer */
|
||||
png_size_t text_length; /* length of the text string */
|
||||
#ifdef PNG_iTXt_SUPPORTED
|
||||
png_size_t itxt_length; /* length of the itxt string */
|
||||
png_charp lang; /* language code, 0-79 characters
|
||||
or a NULL pointer */
|
||||
png_charp lang_key; /* keyword translated UTF-8 string, 0 or more
|
||||
chars or a NULL pointer */
|
||||
#endif
|
||||
} png_text;
|
||||
typedef png_text FAR * png_textp;
|
||||
typedef png_text FAR * FAR * png_textpp;
|
||||
@ -814,31 +822,33 @@ typedef png_row_info FAR * FAR * png_row_infopp;
|
||||
typedef struct png_struct_def png_struct;
|
||||
typedef png_struct FAR * png_structp;
|
||||
|
||||
typedef void (*png_error_ptr) PNGARG((png_structp, png_const_charp));
|
||||
typedef void (*png_rw_ptr) PNGARG((png_structp, png_bytep, png_size_t));
|
||||
typedef void (*png_flush_ptr) PNGARG((png_structp));
|
||||
typedef void (*png_read_status_ptr) PNGARG((png_structp, png_uint_32, int));
|
||||
typedef void (*png_write_status_ptr) PNGARG((png_structp, png_uint_32, int));
|
||||
typedef void (PNGAPI *png_error_ptr) PNGARG((png_structp, png_const_charp));
|
||||
typedef void (PNGAPI *png_rw_ptr) PNGARG((png_structp, png_bytep, png_size_t));
|
||||
typedef void (PNGAPI *png_flush_ptr) PNGARG((png_structp));
|
||||
typedef void (PNGAPI *png_read_status_ptr) PNGARG((png_structp, png_uint_32,
|
||||
int));
|
||||
typedef void (PNGAPI *png_write_status_ptr) PNGARG((png_structp, png_uint_32,
|
||||
int));
|
||||
|
||||
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
|
||||
typedef void (*png_progressive_info_ptr) PNGARG((png_structp, png_infop));
|
||||
typedef void (*png_progressive_end_ptr) PNGARG((png_structp, png_infop));
|
||||
typedef void (*png_progressive_row_ptr) PNGARG((png_structp, png_bytep,
|
||||
typedef void (PNGAPI *png_progressive_info_ptr) PNGARG((png_structp, png_infop));
|
||||
typedef void (PNGAPI *png_progressive_end_ptr) PNGARG((png_structp, png_infop));
|
||||
typedef void (PNGAPI *png_progressive_row_ptr) PNGARG((png_structp, png_bytep,
|
||||
png_uint_32, int));
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
|
||||
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \
|
||||
defined(PNG_LEGACY_SUPPORTED)
|
||||
typedef void (*png_user_transform_ptr) PNGARG((png_structp,
|
||||
typedef void (PNGAPI *png_user_transform_ptr) PNGARG((png_structp,
|
||||
png_row_infop, png_bytep));
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
|
||||
typedef int (*png_user_chunk_ptr) PNGARG((png_structp, png_unknown_chunkp));
|
||||
typedef int (PNGAPI *png_user_chunk_ptr) PNGARG((png_structp, png_unknown_chunkp));
|
||||
#endif
|
||||
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
|
||||
typedef void (*png_unknown_chunk_ptr) PNGARG((png_structp));
|
||||
typedef void (PNGAPI *png_unknown_chunk_ptr) PNGARG((png_structp));
|
||||
#endif
|
||||
|
||||
/* Transform masks for the high-level interface */
|
||||
@ -1101,9 +1111,9 @@ struct png_struct_def
|
||||
};
|
||||
|
||||
/* This prevents a compiler error in png_get_copyright() in png.c if png.c
|
||||
and png.h are both at * version 1.0.6j
|
||||
and png.h are both at * version 1.0.7beta11
|
||||
*/
|
||||
typedef png_structp version_1_0_6j;
|
||||
typedef png_structp version_1_0_7beta11;
|
||||
|
||||
typedef png_struct FAR * FAR * png_structpp;
|
||||
|
||||
@ -2103,7 +2113,7 @@ extern PNG_EXPORT(png_charp,png_get_header_version) PNGARG((png_structp png_ptr)
|
||||
extern PNG_EXPORT(png_charp,png_get_libpng_ver) PNGARG((png_structp png_ptr));
|
||||
|
||||
#define PNG_HEADER_VERSION_STRING \
|
||||
" libpng version 1.0.6j - May 4, 2000 (header)\n"
|
||||
" libpng version 1.0.7beta11 - May 6, 2000 (header)\n"
|
||||
|
||||
#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
|
||||
/* With these routines we avoid an integer divide, which will be slower on
|
||||
@ -2169,8 +2179,6 @@ extern PNG_EXPORT(png_charp,png_get_libpng_ver) PNGARG((png_structp png_ptr));
|
||||
#define PNG_WROTE_tIME 0x200
|
||||
#define PNG_WROTE_INFO_BEFORE_PLTE 0x400
|
||||
#define PNG_BACKGROUND_IS_GRAY 0x800
|
||||
#define PNG_CREATED_READ_STRUCT 0x1000
|
||||
#define PNG_CREATED_WRITE_STRUCT 0x2000
|
||||
|
||||
/* flags for the transformations the PNG library does on the image data */
|
||||
#define PNG_BGR 0x0001
|
||||
@ -2226,6 +2234,7 @@ extern PNG_EXPORT(png_charp,png_get_libpng_ver) PNGARG((png_structp png_ptr));
|
||||
#define PNG_FLAG_FREE_HIST 0x4000
|
||||
#define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000L
|
||||
#define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000L
|
||||
#define PNG_FLAG_LIBRARY_MISMATCH 0x20000L
|
||||
|
||||
/* For use in png_set_keep_unknown, png_handle_as_unknown */
|
||||
#define HANDLE_CHUNK_AS_DEFAULT 0
|
||||
@ -2331,22 +2340,22 @@ PNG_EXTERN png_uint_16 png_get_uint_16 PNGARG((png_bytep buf));
|
||||
#endif /* !PNG_READ_BIG_ENDIAN_SUPPORTED */
|
||||
|
||||
/* Initialize png_ptr struct for reading, and allocate any other memory.
|
||||
* (old interface - NOT DLL EXPORTED).
|
||||
* (old interface - DEPRECATED).
|
||||
*/
|
||||
extern void png_read_init PNGARG((png_structp png_ptr));
|
||||
extern PNG_EXPORT(void,png_read_init) PNGARG((png_structp png_ptr));
|
||||
#define png_read_init(png_ptr) png_read_init_2(png_ptr, \
|
||||
PNG_LIBPNG_VER_STRING, sizeof(png_struct), sizeof(png_info));
|
||||
extern void png_read_init_2 PNGARG((png_structp png_ptr,
|
||||
extern PNG_EXPORT(void,png_read_init_2) PNGARG((png_structp png_ptr,
|
||||
png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t
|
||||
png_info_size));
|
||||
|
||||
/* Initialize png_ptr struct for writing, and allocate any other memory.
|
||||
* (old interface - NOT DLL EXPORTED).
|
||||
* (old interface - DEPRECATED).
|
||||
*/
|
||||
extern void png_write_init PNGARG((png_structp png_ptr));
|
||||
extern PNG_EXPORT(void,png_write_init) PNGARG((png_structp png_ptr));
|
||||
#define png_write_init(png_ptr) png_write_init_2(png_ptr, \
|
||||
PNG_LIBPNG_VER_STRING, sizeof(png_struct), sizeof(png_info));
|
||||
extern void png_write_init_2 PNGARG((png_structp png_ptr,
|
||||
extern PNG_EXPORT(void,png_write_init_2) PNGARG((png_structp png_ptr,
|
||||
png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t
|
||||
png_info_size));
|
||||
|
||||
|
221
png_ptr.h
221
png_ptr.h
@ -1,221 +0,0 @@
|
||||
struct png_struct_def
|
||||
{
|
||||
#ifdef PNG_SETJMP_SUPPORTED
|
||||
jmp_buf jmpbuf; /* used in png_error */
|
||||
#endif
|
||||
png_error_ptr error_fn; /* function for printing errors and aborting */
|
||||
png_error_ptr warning_fn; /* function for printing warnings */
|
||||
png_voidp error_ptr; /* user supplied struct for error functions */
|
||||
png_rw_ptr write_data_fn; /* function for writing output data */
|
||||
png_rw_ptr read_data_fn; /* function for reading input data */
|
||||
png_voidp io_ptr; /* ptr to application struct for I/O functions*/
|
||||
|
||||
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
|
||||
png_user_transform_ptr read_user_transform_fn; /* user read transform */
|
||||
#endif
|
||||
|
||||
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
|
||||
png_user_transform_ptr write_user_transform_fn; /* user write transform */
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
|
||||
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
|
||||
png_voidp user_transform_ptr; /* user supplied struct for user transform */
|
||||
png_byte user_transform_depth; /* bit depth of user transformed pixels */
|
||||
png_byte user_transform_channels; /* channels in user transformed pixels */
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
|
||||
png_voidp user_chunk_ptr;
|
||||
png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */
|
||||
#endif
|
||||
|
||||
png_uint_32 mode; /* tells us where we are in the PNG file */
|
||||
png_uint_32 flags; /* flags indicating various things to libpng */
|
||||
png_uint_32 transformations; /* which transformations to perform */
|
||||
|
||||
z_stream zstream; /* pointer to decompression structure (below) */
|
||||
png_bytep zbuf; /* buffer for zlib */
|
||||
png_size_t zbuf_size; /* size of zbuf */
|
||||
int zlib_level; /* holds zlib compression level */
|
||||
int zlib_method; /* holds zlib compression method */
|
||||
int zlib_window_bits; /* holds zlib compression window bits */
|
||||
int zlib_mem_level; /* holds zlib compression memory level */
|
||||
int zlib_strategy; /* holds zlib compression strategy */
|
||||
|
||||
png_uint_32 width; /* width of image in pixels */
|
||||
png_uint_32 height; /* height of image in pixels */
|
||||
png_uint_32 num_rows; /* number of rows in current pass */
|
||||
png_uint_32 usr_width; /* width of row at start of write */
|
||||
png_uint_32 rowbytes; /* size of row in bytes */
|
||||
png_uint_32 irowbytes; /* size of current interlaced row in bytes */
|
||||
png_uint_32 iwidth; /* width of current interlaced row in pixels */
|
||||
png_uint_32 row_number; /* current row in interlace pass */
|
||||
png_bytep prev_row; /* buffer to save previous (unfiltered) row */
|
||||
png_bytep row_buf; /* buffer to save current (unfiltered) row */
|
||||
png_bytep sub_row; /* buffer to save "sub" row when filtering */
|
||||
png_bytep up_row; /* buffer to save "up" row when filtering */
|
||||
png_bytep avg_row; /* buffer to save "avg" row when filtering */
|
||||
png_bytep paeth_row; /* buffer to save "Paeth" row when filtering */
|
||||
png_row_info row_info; /* used for transformation routines */
|
||||
|
||||
png_uint_32 idat_size; /* current IDAT size for read */
|
||||
png_uint_32 crc; /* current chunk CRC value */
|
||||
png_colorp palette; /* palette from the input file */
|
||||
png_uint_16 num_palette; /* number of color entries in palette */
|
||||
png_uint_16 num_trans; /* number of transparency values */
|
||||
png_byte chunk_name[5]; /* null-terminated name of current chunk */
|
||||
png_byte compression; /* file compression type (always 0) */
|
||||
png_byte filter; /* file filter type (always 0) */
|
||||
png_byte interlaced; /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
|
||||
png_byte pass; /* current interlace pass (0 - 6) */
|
||||
png_byte do_filter; /* row filter flags (see PNG_FILTER_ below ) */
|
||||
png_byte color_type; /* color type of file */
|
||||
png_byte bit_depth; /* bit depth of file */
|
||||
png_byte usr_bit_depth; /* bit depth of users row */
|
||||
png_byte pixel_depth; /* number of bits per pixel */
|
||||
png_byte channels; /* number of channels in file */
|
||||
png_byte usr_channels; /* channels at start of write */
|
||||
png_byte sig_bytes; /* magic bytes read/written from start of file */
|
||||
|
||||
#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
|
||||
png_uint_16 filler; /* filler bytes for pixel expansion */
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_bKGD_SUPPORTED)
|
||||
png_byte background_gamma_type;
|
||||
#ifdef PNG_FLOATING_POINT_SUPPORTED
|
||||
float background_gamma;
|
||||
#endif
|
||||
png_color_16 background; /* background color in screen gamma space */
|
||||
# if defined(PNG_READ_GAMMA_SUPPORTED)
|
||||
png_color_16 background_1; /* background normalized to gamma 1.0 */
|
||||
# endif /* PNG_READ_GAMMA && PNG_READ_bKGD_SUPPORTED */
|
||||
#endif /* PNG_READ_bKGD_SUPPORTED */
|
||||
|
||||
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
|
||||
png_flush_ptr output_flush_fn;/* Function for flushing output */
|
||||
png_uint_32 flush_dist; /* how many rows apart to flush, 0 - no flush */
|
||||
png_uint_32 flush_rows; /* number of rows written since last flush */
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
|
||||
int gamma_shift; /* number of "insignificant" bits 16-bit gamma */
|
||||
#ifdef PNG_FLOATING_POINT_SUPPORTED
|
||||
float gamma; /* file gamma value */
|
||||
float screen_gamma; /* screen gamma value (display_exponent) */
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
|
||||
png_bytep gamma_table; /* gamma table for 8-bit depth files */
|
||||
png_bytep gamma_from_1; /* converts from 1.0 to screen */
|
||||
png_bytep gamma_to_1; /* converts from file to 1.0 */
|
||||
png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */
|
||||
png_uint_16pp gamma_16_from_1; /* converts from 1.0 to screen */
|
||||
png_uint_16pp gamma_16_to_1; /* converts from file to 1.0 */
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined (PNG_READ_sBIT_SUPPORTED)
|
||||
png_color_8 sig_bit; /* significant bits in each available channel */
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
|
||||
png_color_8 shift; /* shift for significant bit tranformation */
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \
|
||||
|| defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
|
||||
png_bytep trans; /* transparency values for paletted files */
|
||||
png_color_16 trans_values; /* transparency values for non-paletted files */
|
||||
#endif
|
||||
|
||||
png_read_status_ptr read_row_fn; /* called after each row is decoded */
|
||||
png_write_status_ptr write_row_fn; /* called after each row is encoded */
|
||||
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
|
||||
png_progressive_info_ptr info_fn; /* called after header data fully read */
|
||||
png_progressive_row_ptr row_fn; /* called after each prog. row is decoded */
|
||||
png_progressive_end_ptr end_fn; /* called after image is complete */
|
||||
png_bytep save_buffer_ptr; /* current location in save_buffer */
|
||||
png_bytep save_buffer; /* buffer for previously read data */
|
||||
png_bytep current_buffer_ptr; /* current location in current_buffer */
|
||||
png_bytep current_buffer; /* buffer for recently used data */
|
||||
png_uint_32 push_length; /* size of current input chunk */
|
||||
png_uint_32 skip_length; /* bytes to skip in input data */
|
||||
png_size_t save_buffer_size; /* amount of data now in save_buffer */
|
||||
png_size_t save_buffer_max; /* total size of save_buffer */
|
||||
png_size_t buffer_size; /* total amount of available input data */
|
||||
png_size_t current_buffer_size; /* amount of data now in current_buffer */
|
||||
int process_mode; /* what push library is currently doing */
|
||||
int cur_palette; /* current push library palette index */
|
||||
|
||||
# if defined(PNG_READ_TEXT_SUPPORTED)
|
||||
png_size_t current_text_size; /* current size of text input data */
|
||||
png_size_t current_text_left; /* how much text left to read in input */
|
||||
png_charp current_text; /* current text chunk buffer */
|
||||
png_charp current_text_ptr; /* current location in current_text */
|
||||
# endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_READ_TEXT_SUPPORTED */
|
||||
|
||||
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
|
||||
|
||||
#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
|
||||
/* for the Borland special 64K segment handler */
|
||||
png_bytepp offset_table_ptr;
|
||||
png_bytep offset_table;
|
||||
png_uint_16 offset_table_number;
|
||||
png_uint_16 offset_table_count;
|
||||
png_uint_16 offset_table_count_free;
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_DITHER_SUPPORTED)
|
||||
png_bytep palette_lookup; /* lookup table for dithering */
|
||||
png_bytep dither_index; /* index translation for palette files */
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_DITHER_SUPPORTED) || defined(PNG_READ_hIST_SUPPORTED)
|
||||
png_uint_16p hist; /* histogram */
|
||||
#endif
|
||||
|
||||
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
|
||||
png_byte heuristic_method; /* heuristic for row filter selection */
|
||||
png_byte num_prev_filters; /* number of weights for previous rows */
|
||||
png_bytep prev_filters; /* filter type(s) of previous row(s) */
|
||||
png_uint_16p filter_weights; /* weight(s) for previous line(s) */
|
||||
png_uint_16p inv_filter_weights; /* 1/weight(s) for previous line(s) */
|
||||
png_uint_16p filter_costs; /* relative filter calculation cost */
|
||||
png_uint_16p inv_filter_costs; /* 1/relative filter calculation cost */
|
||||
#endif
|
||||
|
||||
#if defined(PNG_TIME_RFC1123_SUPPORTED)
|
||||
png_charp time_buffer; /* String to hold RFC 1123 time text */
|
||||
#endif
|
||||
|
||||
#ifdef PNG_USER_MEM_SUPPORTED
|
||||
png_voidp mem_ptr; /* user supplied struct for mem functions */
|
||||
png_malloc_ptr malloc_fn; /* function for allocating memory */
|
||||
png_free_ptr free_fn; /* function for freeing memory */
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
|
||||
png_byte rgb_to_gray_status;
|
||||
png_uint_16 rgb_to_gray_red_coeff;
|
||||
png_uint_16 rgb_to_gray_green_coeff;
|
||||
png_uint_16 rgb_to_gray_blue_coeff;
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
|
||||
defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
|
||||
png_byte empty_plte_permitted;
|
||||
#endif
|
||||
|
||||
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
|
||||
int num_chunk_list;
|
||||
png_bytep chunk_list;
|
||||
#endif
|
||||
|
||||
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
|
||||
png_fixed_point int_gamma;
|
||||
#endif
|
||||
|
||||
png_uint_32 free_me; /* flags items libpng is responsible for freeing */
|
||||
};
|
@ -1,6 +1,6 @@
|
||||
/* pngasmrd.h - assembler version of utilities to read a PNG file
|
||||
*
|
||||
* libpng 1.0.6j - May 4, 2000
|
||||
* libpng 1.0.7beta11 - May 6, 2000
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1999, 2000 Glenn Randers-Pehrson
|
||||
*
|
||||
|
141
pngconf.h
141
pngconf.h
@ -1,7 +1,6 @@
|
||||
|
||||
/* pngconf.h - machine configurable file for libpng
|
||||
*
|
||||
* libpng 1.0.6j - May 4, 2000
|
||||
* libpng 1.0.7beta11 - May 6, 2000
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
|
||||
* Copyright (c) 1996, 1997 Andreas Dilger
|
||||
@ -258,15 +257,31 @@
|
||||
/* Any features you will not be using can be undef'ed here */
|
||||
|
||||
/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
|
||||
to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
|
||||
on the compile line, then pick and choose which ones to define without
|
||||
having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
|
||||
if you only want to have a png-compliant reader/writer but don't need
|
||||
any of the extra transformations. This saves about 80 kbytes in a
|
||||
typical installation of the library. (PNG_NO_* form added in version
|
||||
1.0.1c, for consistency)
|
||||
* to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
|
||||
* on the compile line, then pick and choose which ones to define without
|
||||
* having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
|
||||
* if you only want to have a png-compliant reader/writer but don't need
|
||||
* any of the extra transformations. This saves about 80 kbytes in a
|
||||
* typical installation of the library. (PNG_NO_* form added in version
|
||||
* 1.0.1c, for consistency)
|
||||
*/
|
||||
|
||||
/* The size of the png_text structure changed in libpng-1.0.6 when
|
||||
* iTXt is supported. It is turned off by default, to support old apps
|
||||
* that malloc the png_text structure instead of calling png_set_text()
|
||||
* and letting libpng malloc it. It will be turned on by default in
|
||||
* libpng-2.0.0.
|
||||
*/
|
||||
|
||||
#ifndef PNG_iTXt_SUPPORTED
|
||||
# ifndef PNG_READ_iTXt_SUPPORTED
|
||||
# define PNG_NO_READ_iTXt
|
||||
# endif
|
||||
# ifndef PNG_WRITE_iTXt_SUPPORTED
|
||||
# define PNG_NO_WRITE_iTXt
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* The following support, added after version 1.0.0, can be turned off here en
|
||||
* masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
|
||||
* with old applications that require the length of png_struct and png_info
|
||||
@ -280,6 +295,8 @@
|
||||
#define PNG_NO_READ_USER_CHUNKS
|
||||
#define PNG_NO_READ_iCCP
|
||||
#define PNG_NO_WRITE_iCCP
|
||||
#define PNG_NO_READ_iTXt
|
||||
#define PNG_NO_WRITE_iTXt
|
||||
#define PNG_NO_READ_sCAL
|
||||
#define PNG_NO_WRITE_sCAL
|
||||
#define PNG_NO_READ_sPLT
|
||||
@ -290,6 +307,7 @@
|
||||
#define PNG_NO_WRITE_USER_TRANSFORM
|
||||
#define PNG_NO_USER_MEM
|
||||
#define PNG_NO_READ_EMPTY_PLTE
|
||||
#define PNG_NO_FIXED_POINT_SUPPORTED
|
||||
#endif
|
||||
|
||||
#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
|
||||
@ -298,7 +316,8 @@
|
||||
|
||||
/* Ignore attempt to turn off both floating and fixed point support */
|
||||