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Author SHA1 Message Date
John Bowler
c75a0a40b4 Revert "Disable 'methodical' filter selection code" 
This reverts commit 9c76207dbb86e04fd2f5eef088be72ba4a454a36.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-12-19 09:50:15 -08:00
Glenn Randers-Pehrson
fad9c9af47 [libpng17] Bump version to 1.7.0beta75 2015-12-19 09:25:12 -06:00
Glenn Randers-Pehrson
5695e897fd [libpng17] Imported from libpng-1.7.0beta74.tar v1.7.0beta74 2015-12-19 09:25:01 -06:00
Glenn Randers-Pehrson
0e249e9d93 [libpng17] Updated CHANGES and ANNOUNCE 2015-12-18 22:28:13 -06:00
Glenn Randers-Pehrson
a78c4e286a Merge branch 'test17' of git://github.com/daviddrysdale/libpng into libpng17 2015-12-18 18:09:31 -06:00
Glenn Randers-Pehrson
16424d20b5 [libpng17] Update CHANGES and ANNOUNCE 2015-12-18 14:41:17 -06:00
John Bowler
9c76207dbb Disable 'methodical' filter selection code 
It is incomplete; it works but does not do anything useful except, maybe, on
really enormous images.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-12-18 09:17:41 -08:00
David Drysdale
2023c4a0a5 Add Travis build configuration 
Include sanitizers and coverage (via https://coveralls.io)
 2015-12-18 07:23:56 +00:00
John Bowler
69ff249bc4 Merge branch 'libpng17' into libpng17-filter-selection 2015-12-17 20:06:48 -08:00
Glenn Randers-Pehrson
844e264234 [libpng17] Updated CHANGES and ANNOUNCE 2015-12-17 20:53:54 -06:00
John Bowler
61acc4c9ed Prototype implementation of filter selection 
This rewrites the code used previously in the heuristics to make it easier to
debug and introduces the 'methodical' method, which is intended to be an
expensive but reliable way of reducing image size.

The code in this commit does not work; the 'methodical' test for success does
not take account of data buffered inside zlib and, anyway, it changes the
results of pngtest so that the test fails.  This commit is just a checkpoint of
the current state; another commit will temporarily disable the 'methodical'
code.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-12-17 17:47:29 -08:00
John Bowler
bd0bb3ca7f Fix undefined behavior in pngvalid.c 
Undefined because (png_byte) << shift is undefined if it changes the signed bit
(because png_byte is promoted to int).  The libpng exported functions
png_get_uint_32 and png_get_uint_16 handle this.

Bug reported by David Drysdale as a result of reports from UBSAN in clang 3.8.

This changes pngvalid to use BE random numbers; this used to produce errors but
these should not be fixed as a result of the previous changes.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-12-17 12:58:36 -08:00
Glenn Randers-Pehrson
386b2b0a7b [libng17] Update CHANGES and ANNOUNCE 2015-12-15 12:26:54 -06:00
John Bowler
d103609ac5 pngvalid with 'limit' checks disabled in RC+ 
This widens the 'limit' check on the internally calculated error limits in the
'DIGITIZE' case (the code used prior to 1.7 for rgb_to_gray error checks) and it
changes the check to only operate in non-release builds (base build type not RC
or RELEASE.)

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-12-15 08:33:18 -08:00
Glenn Randers-Pehrson
639f8a4668 [libpng17] Update CHANGES and ANNOUNCE, fix date in pngvalid.c 2015-12-14 06:56:49 -06:00
John Bowler
aed7f7aaf9 Merge branch 'libpng17' of ../../libpng into libpng17 2015-12-13 22:28:27 -08:00
Glenn Randers-Pehrson
15b6717221 [libpng17] Update copyright years in source files. 2015-12-13 22:37:27 -06:00
Glenn Randers-Pehrson
c9fda22f76 [libpng16] Fix typo in "last-changed" date. 2015-12-13 18:25:36 -08:00
John Bowler
4891f1a5a8 Fix rgb_to_gray graylo==0 errors, build issues 
Fixes to pngvalid for various reduced build configurations (eliminate unused
statics) and a fix for the case in rgb_to_gray when the digitize option reduces
graylo to 0, producing a large error.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-12-13 18:02:31 -08:00
John Bowler
abe4a4f049 Remove LE/BE dependencies in pngvalid 
This 'fixes' the current problem in the BE tests by not testing it, making the
BE code the same as the LE version.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-12-13 18:00:21 -08:00
Glenn Randers-Pehrson
f3fa5dce47 [libpng17] Bump version to 1.7.0beta74 2015-12-11 16:13:00 -06:00
Glenn Randers-Pehrson
17bfbce61c [libpng17] Imported from libpng-1.7.0beta73.tar v1.7.0beta73 2015-12-11 16:07:31 -06:00
Glenn Randers-Pehrson
2933c2e361 [libpng17] Changed png_struct->options from png_byte to png_uint_32, to hold 
up to 16 2-bit options.
 2015-12-11 14:53:54 -06:00
Glenn Randers-Pehrson
69f21bc6eb [libpng17] Combine tests for info_ptr==NULL in png_handle_PLTE(). 2015-12-11 14:28:54 -06:00
Glenn Randers-Pehrson
454408799b [libpng17] Updated ANNOUNCE and CHANGES to describe recent fix more accurately. 2015-12-09 15:55:11 -06:00
Glenn Randers-Pehrson
4c1ee27962 [libpng17] Fixed a syntax error in tests/pngstest that some shells other than 
bash could not parse (Bug report by Nelson Beebe).
 2015-12-09 13:29:02 -06:00
Glenn Randers-Pehrson
26090a5f43 [libpng17] Bump version to 1.7.0beta73 2015-12-08 13:03:30 -06:00
Glenn Randers-Pehrson
bfd8446816 [libpng17] Imported from libpng-1.7.0beta72.tar v1.7.0beta72 2015-12-08 12:56:55 -06:00
Glenn Randers-Pehrson
605f8d046f [libpng17] Update CHANGES and ANNOUNCE 2015-12-06 20:12:23 -06:00
John Bowler
b8ab93dc6f Fix stack smaller in write png_copy_row 
This also resulted in PNG data with random row bytes.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-12-06 11:12:17 -08:00
John Bowler
66b53bdd37 Merge remote-tracking branch 'code/libpng17-20151204' into libpng17-71-1 2015-12-06 10:41:58 -08:00
Glenn Randers-Pehrson
dcbc357c46 [libpng17] Bump version to 1.7.0beta72 2015-12-05 13:58:01 -06:00
Glenn Randers-Pehrson
8ac1821831 [libpng17] Imported from libpng-1.7.0beta71.tar v1.7.0beta71 2015-12-05 13:52:36 -06:00
Glenn Randers-Pehrson
3407d0f7c4 [libpng17] Updated CHANGES and ANNOUNCE 2015-12-05 13:51:07 -06:00
John Bowler
c8d2efcb50 Fix g++ builds 
enums are (int), G++ objects to (int) and (unsigned) being used together in ?:

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-12-03 17:17:42 -08:00
Glenn Randers-Pehrson
99436a407e [libpng17] Bump version to 1.7.0beta71 2015-12-03 17:54:53 -06:00
John Bowler
59136cc3b3 Fix build break in no-write-filters cases 
Signed-off-by: John Bowler <jbowler@acm.org>
 2015-12-03 14:12:05 -08:00
John Bowler
afbaf7150b Merge branch 'libpng17' into libpng17-20151201 
MASSIVE merge conflicts; way beyond those reported here:

Conflicts:
	pngstruct.h
	pngwutil.c
	scripts/pnglibconf.h.prebuilt
 2015-12-03 13:47:39 -08:00
John Bowler
86499967c3 Checkpoint for 'methodical' filter selection 
This checkpoint is to allow the massive merge with the recent mainline libpng17
changes.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-12-03 13:25:11 -08:00
Glenn Randers-Pehrson
028d2c3fd6 [libpng17] Bump version to 1.7.0beta71 2015-12-03 10:15:25 -06:00
Glenn Randers-Pehrson
47ed19dfce [libpng17] Bump version to 1.7.0beta71 2015-12-02 22:31:19 -06:00
Glenn Randers-Pehrson
94a5189b1c [libpng17] Imported from libpng-1.7.0beta70.tar v1.7.0beta70 2015-12-02 22:30:47 -06:00
John Bowler
9fce04fcd6 Change option (SUPPORTED) names, dummy code 
The filter selection options are made more intuitive (IMO, but I am not an
Intuitive User).  Dummy code added for methodical filter selection.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-12-02 19:03:28 -08:00
John Bowler
71c5123a4d Merge branch 'libpng17' into libpng17-20151201 2015-12-02 17:10:45 -08:00
John Bowler
e9d567d9ec Filter heuristic implementation 
This implements the heuristic part of filter selction, the methodic testing
approach is still not implemented.  png_set_option methods are incomplete.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-12-02 17:08:17 -08:00
Glenn Randers-Pehrson
37a50281cf [libpng17] Reverted recent manual change. The additional restrictions 
on the order of png_set_PLTE, png_set_tRNS, and png_set_hIST are
not necessary.
 2015-12-01 17:23:54 -06:00
Glenn Randers-Pehrson
aacda27449 [libpng17] Updated ANNOUNCE and CHANGES 2015-12-01 11:35:57 -06:00
Glenn Randers-Pehrson
b427d7216d Merge branch 'libpng17-20151130' of git://github.com/jbowler/libpng-1 into libpng17 2015-12-01 11:20:41 -06:00
Glenn Randers-Pehrson
c46bd30b51 [libpng17] Updated manual to require png_set_PLTE() to precede png_set_tRNS() 
and png_set_hIST() if either is present.
 2015-12-01 11:13:44 -06:00
John Bowler
0f2f0f7bbd Merge branch 'libpng17' into libpng17-20151130 2015-12-01 08:41:45 -08:00