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436 Commits

Author SHA1 Message Date
Glenn Randers-Pehrson
e9eeb743cb [devel] Reverted recent change of errors to warnings. 2011-05-08 19:39:17 -05:00
Glenn Randers-Pehrson
8ba34667a1 [devel] Changed some errors to warnings, added missing "png_ptr" arg in 
some currently dead code in pngrtran.c that will be enabled in libpng-1.6
 2011-05-08 06:02:18 -05:00
Glenn Randers-Pehrson
c7822514cc [devel] Fix typos in comments, add new API synopses to libpng.3 2011-05-07 21:23:43 -05:00
John Bowler
d273ad2d0f [devel] Implementation of premultiplied alpha support: png_set_alpha_mode 
(libpng-manual.txt still to be updated, see png.h for documentation.)
 2011-05-07 21:00:28 -05:00
Glenn Randers-Pehrson
4753906826 [devel] Update "last changed" dates and added CHANGES entry. 2011-05-05 07:32:30 -05:00
John Bowler
88b77cc6f3 [devel] Remove png_snprintf, add formatted warning messages. 
This change adds internal APIs to allow png_warning messages to have parameters
 without requiring the host OS to implelment snprintf.  As a side effect the
 dependency of the RFC1132 code on stdio is removed and PNG_NO_WARNINGS does
 actually work now.
 2011-05-05 06:49:55 -05:00
John Bowler
4a12f4a22a [devel] Cleanup of conditional compilation code and of background/gamma 
handling. Internal changes only except for a new option to avoid compiling
in the png_build_grayscale_palette API (which is not used at all internally.)
The main change is to move the transform tests (READ_TRANSFORMS,
WRITE_TRANSFORMS) up one level to the caller of the APIs.
 2011-04-17 18:34:22 -05:00
Glenn Randers-Pehrson
d2795b7909 [devel] Revised a comment about png_do_strip_channel(). 2011-04-16 19:41:23 -05:00
Glenn Randers-Pehrson
dcc3505c7b [devel] Imported from libpng-1.5.2.tar 2011-03-31 11:29:05 -05:00
Glenn Randers-Pehrson
cad6798a8c [devel] Imported from libpng-1.5.2beta01.tar 2011-02-13 06:13:39 -06:00
Glenn Randers-Pehrson
c36bb79352 [devel] Trim trailing blanks from sources and manual 2011-02-12 09:49:07 -06:00
John Bowler
4d56296443 [devel] Implement expansion to 16 bits 2011-02-12 09:01:20 -06:00
John Bowler
9b872f4cf9 [devel] Clean up ALPHA flags and transformations 2011-02-12 09:00:16 -06:00
Glenn Randers-Pehrson
3d3aae1697 --amend [devel] Imported from libpng-1.5.1.tar 2011-02-02 23:00:03 -06:00
John Bowler
f21a0d0eee [devel] Enhance pngvalid, correct an error in gray_to_rgb, correct doc error. 2011-01-23 23:55:19 -06:00
Glenn Randers-Pehrson
033155ca21 [devel] Imported from libpng-1.5.1beta01.tar 2011-01-08 15:50:00 -06:00
John Bowler
4e230b087e [devel] Proper fix for the failure to handle palette mapped images correctly. 2011-01-08 14:49:25 -06:00
John Bowler
a96117f52c [devel] Ensure that png_rgb_to_gray ignores palette mapped images. 2011-01-08 14:41:25 -06:00
Glenn Randers-Pehrson
f5ea1b7095 [devel] Imported from libpng-1.5.0.tar 2011-01-06 06:45:07 -06:00
Glenn Randers-Pehrson
64b863cd2a [devel] Update copyright year and bump to version libpng-1.5.0rc07 2011-01-04 09:58:33 -06:00
Glenn Randers-Pehrson
f2e2833f28 [devel] Fixed bug in background transformation handling in pngrtran.c 
(it was looking for the flag in png_ptr->transformations instead of in
png_ptr->flags).
 2010-12-28 21:48:43 -06:00
Glenn Randers-Pehrson
b3edc73afa [devel] Changes to remove gcc warnings (John Bowler) 
Certain optional gcc warning flags resulted in warnings in libpng code.
With these changes only -Wconversion and -Wcast-qual cannot be turned on.
Changes are trivial rearrangements of code.  -Wconversion is not possible
for pngrutil.c (because of the widespread use of += et al on variables
smaller than (int) or (unsigned int)) and -Wcast-qual is not possible
with pngwio.c and pngwutil.c because the 'write' callback and zlib
compression both fail to declare their input buffers with 'const'.
 2010-11-21 14:06:41 -06:00
Glenn Randers-Pehrson
f0eda4e8d7 [devel] Imported from libpng-1.5.0beta51.tar 2010-10-15 15:08:42 -05:00
Glenn Randers-Pehrson
7e1fabe2f7 [devel] Imported from libpng-1.5.0beta50.tar 2010-10-14 07:35:45 -05:00
Glenn Randers-Pehrson
bc363eca41 [devel] Removed some unwanted spaces 2010-10-12 21:17:00 -05:00
Glenn Randers-Pehrson
1b49a71df4 [devel] Imported from libpng-1.5.0beta49.tar 2010-10-07 21:01:17 -05:00
Glenn Randers-Pehrson
83b4fc4af4 [devel] Imported from libpng-1.5.0beta48.tar 2010-10-04 23:06:09 -05:00
Glenn Randers-Pehrson
b0876110ca [devel] Fixed problem with symbols creation in Makefile.am which was assuming 
that CCP writes to standard output by default (Martin Banky).
 2010-10-04 22:24:14 -05:00
Glenn Randers-Pehrson
bcb3aac3c5 [devel] Fixed a number of problems with 64-bit compilation reported by Visual 
Studio 2010 (John Bowler).
 2010-09-10 22:05:27 -05:00
Glenn Randers-Pehrson
39515c9ee0 [devel] Imported from libpng-1.5.0beta46.tar 2010-08-28 06:25:21 -05:00
Glenn Randers-Pehrson
4554a54a6c [devel] Don't force 1, 2, and 4-bit depths to 8 when PNG_NO_16BIT is defined. 2010-08-27 10:48:45 -05:00
Glenn Randers-Pehrson
925d23b32a [devel] Conditionally compile parts of pngrtran.c and pngtrans.c 
depending on PNG_16BIT_SUPPORTED
 2010-08-26 21:43:18 -05:00
Glenn Randers-Pehrson
a7119547e2 [devel] Imported from libpng-1.5.0beta45.tar 2010-08-26 07:10:48 -05:00
Glenn Randers-Pehrson
9b362b1e4f [devel] Bump to version libpng-1.5.0beta45 2010-08-24 09:05:02 -05:00
Glenn Randers-Pehrson
67439c4701 [devel] Addressed various issues identified by GCC, mostly signed/unsigned 
and shortening problems on assignment but also a few difficult to optimize
(for GCC) loops (John Bowler).
 2010-08-19 07:01:09 -05:00
Glenn Randers-Pehrson
a313751258 [devel] Removed spurious tabs, shorten long lines (no source change) 
Also added scripts/chkfmt to validate the format of all the files that can
reasonably be validated (it is suggested to run "make distclean" before
checking, because some machine generated files have long lines.)
Reformatted the CHANGES file to be more consistent throughout.
 2010-08-18 20:25:36 -05:00
Glenn Randers-Pehrson
e600c51355 [devel]Made all API functions that have const arguments and constant string 
literal pointers declare them (John Bowler).
Many APIs did not change their arguments but were not declared using
PNG_CONST.  This change corrects this.  In a few cases APIs that return
constant string literal pointers have also been changed to declare this.
Unlike the argument change this may require app changes; however the
results could never be written to (the app would crash on some platforms
where strings are not writable), so this seems advisable.
 2010-08-18 07:25:46 -05:00
Glenn Randers-Pehrson
363f96e717 [devel] Imported from libpng-1.5.0beta41.tar 2010-08-11 09:04:31 -05:00
Glenn Randers-Pehrson
836fe66e24 [devel] Imported from libpng-1.5.0beta40.tar 2010-08-06 06:57:32 -05:00
Glenn Randers-Pehrson
2c700f970c [devel] Imported from libpng-1.5.0beta39.tar 2010-08-02 08:02:00 -05:00
Glenn Randers-Pehrson
bdabd8f75b [devel] Bump to version libpng-1.5.0beta38 2010-07-31 07:17:30 -05:00
Glenn Randers-Pehrson
6c47e84d2e [devel] Bump to version libpng-1.5.0beta36 2010-07-29 19:10:27 -05:00
Glenn Randers-Pehrson
29034c5076 [devel] Expanded the new TAB characters. 2010-07-29 17:58:49 -05:00
Glenn Randers-Pehrson
31aee0d0c0 [devel] 
Fixed point APIs are now supported throughout (no missing APIs).
  Internal fixed point arithmetic support exists for all internal floating
    point operations.
  sCAL validates the floating point strings it is passed.
  Safe, albeit rudimentary, Watcom support is provided by PNG_API_RULE==2
  Two new APIs exist to get the number of passes without turning on the
    PNG_INTERLACE transform and to get the number of rows in the current
    pass.
  A new test program, pngvalid.c, validates the gamma code.
  Errors in the 16 bit gamma correction (overflows) have been corrected.
  cHRM chunk testing is done consistently (previously the floating point
    API bypassed it, because the test really didn't work on FP, now the test
    is performed on the actual values to be stored in the PNG file so it
    works in the FP case too.)
  Most floating point APIs now simply call the fixed point APIs after
    converting the values to the fixed point form used in the PNG file.
  The standard headers no longer include zlib.h, which is currently only
    required for pngstruct.h and can therefore be internal.
  (Patches by John Bowler)
 2010-07-29 17:39:14 -05:00
Glenn Randers-Pehrson
915bab5fc7 [devel] Bump to version libpng-1.5.0beta35 2010-07-24 08:25:31 -05:00
Glenn Randers-Pehrson
39a8bb71d3 [devel] Imported from libpng-1.5.0beta34.tar 2010-07-12 06:45:23 -05:00
Glenn Randers-Pehrson
8f9de7acbd [devel] Bump back to version libpng-1.5.0beta34 2010-07-06 07:46:10 -05:00
Glenn Randers-Pehrson
289500ab8d [devel] Imported from libpng-1.5.0beta33.tar 2010-06-28 20:21:22 -05:00
Glenn Randers-Pehrson
a272d8fe3d [devel] Made FIXED and FLOATING options consistent in the APIs they enable 
and disable.  Corrected scripts/options.awk to handle both command line
options and options specified in the .dfa files.
 2010-06-25 21:45:31 -05:00
Glenn Randers-Pehrson
4db344230d [devel] Imported from libpng-1.5.0beta32.tar 2010-06-25 20:18:44 -05:00
Glenn Randers-Pehrson
821b7106b2 [devel] Imported from libpng-1.5.0beta31.tar 2010-06-25 20:06:43 -05:00
Glenn Randers-Pehrson
ef3831a1fe [devel] Imported from libpng-1.5.0beta30.tar 2010-06-25 20:06:40 -05:00
Glenn Randers-Pehrson
5feb87cd0e [devel] Imported from libpng-1.5.0beta29.tar 2010-06-25 20:06:38 -05:00
Glenn Randers-Pehrson
57d9617964 [devel] Imported from libpng-1.5.0beta28.tar 2010-06-25 20:06:35 -05:00
Glenn Randers-Pehrson
5b3d554e1e [devel] Imported from libpng-1.5.0beta26.tar 2010-06-25 20:06:30 -05:00
Glenn Randers-Pehrson
53c07f5909 [devel] Imported from libpng-1.5.0beta25.tar 2010-06-25 20:06:28 -05:00
Glenn Randers-Pehrson
537c1a5747 [devel] Imported from libpng-1.5.0beta24.tar 2010-05-07 09:55:50 -05:00
Glenn Randers-Pehrson
f24daf23a5 [devel] Added more blank lines for readability. 2010-05-06 09:44:04 -05:00
Glenn Randers-Pehrson
aa3143cf6f [devel] Imported from libpng-1.5.0beta23.tar 2010-04-29 10:56:05 -05:00
Glenn Randers-Pehrson
bb317fb0b2 [devel] Bump to libpng-1.5.0beta22 2010-04-28 07:44:23 -05:00
Glenn Randers-Pehrson
deec549d9f [devel] Imported from libpng-1.5.0beta21.tar 2010-04-26 22:51:22 -05:00
Glenn Randers-Pehrson
9c5beb56e3 [devel] Bump back to version libpng-1.5.0beta21 2010-04-24 20:35:28 -05:00
Glenn Randers-Pehrson
b56e0d06f9 [devel] Imported from libpng-1.5.0beta19.tar 2010-04-24 12:17:49 -05:00
Glenn Randers-Pehrson
5623f781bc [devel] Imported from libpng-1.5.0beta18.tar 2010-04-17 19:09:22 -05:00
Glenn Randers-Pehrson
3cd7cffd0c [devel] Imported from libpng-1.5.0beta17.tar 2010-04-16 19:28:42 -05:00
Glenn Randers-Pehrson
6098807252 [devel] Document the fact that png_set_dither() is no longer supported. 2010-04-13 22:11:06 -05:00
Glenn Randers-Pehrson
c2fa196d14 [devel] Imported from libpng-1.5.0beta16.tar 2010-04-01 07:19:17 -05:00
Glenn Randers-Pehrson
b2eacd3e1f [devel] Imported from libpng-1.5.0beta15.tar 2010-03-17 07:33:10 -05:00
Glenn Randers-Pehrson
4a215541e7 [devel] Imported from libpng-1.5.0beta14.tar 2010-03-14 09:42:07 -05:00
Glenn Randers-Pehrson
c6fecfbaa5 [devel] Imported from libpng-1.5.0beta13.tar 2010-03-10 09:12:03 -06:00
Glenn Randers-Pehrson
86f88ddd53 [devel] Imported from libpng-1.5.0beta12.tar 2010-03-08 21:31:46 -06:00
Glenn Randers-Pehrson
c3cd22b404 [devel] Moved "#include png.h" inside pngpriv.h and removed "#include png.h" 
from the source files, along with "#define PNG_EXPOSE_INTERNAL_STRUCTURES"
and "#define PNG_NO_PEDANTIC_WARNINGS" (John Bowler).
Also created new pngdebug.h and moved debug definitions there.
 2010-03-08 21:10:25 -06:00
Glenn Randers-Pehrson
aaf377c874 [devel] Bump to version libpng-1.5.0beta12 2010-03-08 11:21:39 -06:00
Glenn Randers-Pehrson
e4c706af54 [devel] Imported from libpng-1.5.0beta11.tar 2010-03-06 14:53:56 -06:00
Glenn Randers-Pehrson
3ea36758ef [devel] Fix inconsistent whitespace and indentation. 2010-03-03 09:35:31 -06:00
Glenn Randers-Pehrson
65a223794a [devel] Bump to version libpng-1.5.0beta11 2010-03-03 05:39:36 -06:00
Glenn Randers-Pehrson
6a9e480512 [devel] Imported from libpng-1.5.0beta07.tar 2010-02-19 09:59:25 -06:00
Glenn Randers-Pehrson
7a5be53631 [devel] Imported from libpng-1.5.0beta06.tar 2010-02-14 07:18:23 -06:00
Glenn Randers-Pehrson
6e283234c9 [devel] Imported from libpng-1.5.0beta05.tar 2010-02-12 21:28:31 -06:00
Glenn Randers-Pehrson
f97953181a [devel] Changed PNG_INTERNAL to PNG_EXPOSE_INTERNAL_STRUCTURES 
and updated the "last change" comments to 1.5.0
 2010-02-09 01:16:48 -06:00
Glenn Randers-Pehrson
b9a78bedee [devel] Imported from libpng-1.5.0beta04.tar 2010-02-08 23:34:32 -06:00
Glenn Randers-Pehrson
f1eb918dc8 [devel] Imported from libpng-1.5.0beta03.tar 2010-02-08 15:42:16 -06:00
Glenn Randers-Pehrson
e3f3c4ea0b [devel] Imported from libpng-1.5.0beta01.tar 2010-02-07 18:10:43 -06:00
Glenn Randers-Pehrson
67a83db98d [devel] Imported from libpng-1.4.0rc08.tar 2010-01-01 18:32:13 -06:00
Glenn Randers-Pehrson
e69b55d9ac [devel] Update copyright year to 2010 2010-01-01 10:29:06 -06:00
Glenn Randers-Pehrson
f81b50bf9d [devel] Imported from libpng-1.4.0rc06.tar 2009-12-29 16:51:34 -06:00
Glenn Randers-Pehrson
dbcfb7151f [devel] Imported from libpng-1.4.0rc04.tar 2009-12-25 14:27:23 -06:00
Glenn Randers-Pehrson
5265c3889c [devel] Bump to version 1.4.0rc03 2009-12-22 09:10:46 -06:00
Glenn Randers-Pehrson
62ca98ef5e [devel] Imported from libpng-1.4.0rc02.tar 2009-12-20 15:16:15 -06:00
Glenn Randers-Pehrson
ffa8924330 [devel] Added "bit_depth" parameter to the private png_build_gamma_table() 
function.  Pass bit_depth=8 to png_build_gamma_table() when bit_depth is 16
but the PNG_16_TO_8 transform has been set, to avoid unnecessary build of
16-bit tables.
 2009-12-13 08:14:40 -06:00
Glenn Randers-Pehrson
7a59e1eae8 [devel] Relocated png_do_chop() to its original position in pngrtran.c 
The change in version 1.2.41beta08 caused transparency to be handled wrong
in some 16-bit datastreams (Yusaku Sugai).
 2009-12-11 07:57:36 -06:00
Glenn Randers-Pehrson
03f9b02953 [devel] Removed "-DPNG_CONFIGURE_LIBPNG" from the makefiles and projects. 
and added "#define PNG_NO_PEDANTIC_WARNINGS" in the libpng source files.
 2009-12-04 08:40:41 -06:00
Glenn Randers-Pehrson
5876b850b2 [devel] Removed premultiplied alpha feature. 
It will be replaced in the future with a function that accounts for gamma.
 2009-11-27 00:24:42 -06:00
Glenn Randers-Pehrson
5a2015e146 [devel] Bump to version 1.4.0beta106 2009-11-26 11:46:24 -06:00
Glenn Randers-Pehrson
d23f2b2845 [devel] Imported from libpng-1.4.0beta105.tar 2009-11-24 22:14:21 -06:00
Glenn Randers-Pehrson
768429bbc1 [devel] Use fast integer PNG_DIVIDE_BY_255() or PNG_DIVIDE_BY_65535() 
to accomplish alpha premultiplication when PNG_READ_COMPOSITE_NODIV_SUPPORTED
is defined.  Changed "/255" to "/255.0" in background calculations to make it
clear that the 255 is used as a double (and to prevent anyone from being
tempted to use PNG_DIVIDE_BY_255() there).
 2009-11-24 07:26:06 -06:00
Glenn Randers-Pehrson
bbd20f0a74 [devel] Imported from libpng-1.4.0beta104.tar 2009-11-21 21:51:28 -06:00
Glenn Randers-Pehrson
931400bd04 [devel] Imported from libpng-1.4.0beta103.tar 2009-11-20 22:58:48 -06:00
Glenn Randers-Pehrson
311c8476f8 [devel] Bump to version 1.4.0beta103 2009-11-20 09:46:59 -06:00
Glenn Randers-Pehrson
cd7d63a805 [devel] Imported from libpng-1.4.0beta102.tar 2009-11-18 10:31:31 -06:00