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Author SHA1 Message Date
John Cupitt
c2d1de9a26 allow mixed zoom and shrink in resize 
vips_resize() now allows >1 on one axis, <1 on the other ... previously,
although you could have non-square ratios, you couldn't mix zoom and
shrink
 2016-05-01 12:03:13 +01:00
John Cupitt
73080bb4a5 try to improve mozjpeg test 
save LIBS around test, test for ABI not header

see https://github.com/jcupitt/libvips/issues/431
 2016-04-26 10:41:04 +01:00
John Cupitt
8a31df3214 only save tiles more than 5 from blank 
looks for max absolute difference
 2016-04-26 10:06:59 +01:00
John Cupitt
5e933fe8e9 Merge branch 'master' into no-blank-tiles 2016-04-25 09:54:01 +01:00
John Cupitt
d11a7960b7 add support for giflib5 
gifload.c now works with giflib5, and well as giflib4 ... forced by
ubuntu's switch to giflib5 in 16.04

see https://github.com/jcupitt/libvips/issues/407
 2016-04-25 09:29:25 +01:00
Felix Bünemann
27e3198833 Add webp save/load format tests for "make check" 2016-04-24 18:28:53 +02:00
Felix Bünemann
874cc8b31b Restore webpsave libwebp-0.1.3 compatility 
* Add configure check for libwebp >= 0.1.3
* Add custom memory writer using GNOME memory allocation
* Add various ABI checks and warnings for unsupported features:
** smart_subsample and near_lossless require 0.5.0
** lossless requires at least 0.1.99
 2016-04-24 18:28:53 +02:00
Felix Bünemann
0a25f6efca Add alpha_q(uality) webpsave option, fix Q init 
This allows to control the fidelity of the alpha channel by allowing
webp to reduce the number of palette entries from 256 at alpha_q=100
to 2 at alpha_q=0. This is most useful with cutout pictures where
something like alpha_q=30 or around 8 levels is usually sufficient
for smooth outlines.

For some reason webp->Q was intiailized to 80 even though the Q option
and libwebp use 75 by default. This was never used, so it's just to
avoid confusion about what default is used.
 2016-04-24 18:18:40 +02:00
John Cupitt
699ade0877 Merge branch 'master' into no-blank-tiles 2016-04-24 09:59:04 +01:00
John Cupitt
128480bab6 VipsForeign nickname was wrong 
it was set to "file", strangely

see https://github.com/jcupitt/libvips/issues/429
 2016-04-23 13:29:42 +01:00
Felix Bünemann
c107066c4e Add webpsave near_lossless support, fix Q range 
The near_lossless option allows to enable preprocessing for the lossless
mode. This is a boolean instead of an int, because the amount of
preprocessing is controlled using the Q factor parameter which is
otherwise unused in lossless mode. This allows to re-use the quality
setting in existing tools.
 2016-04-23 02:00:32 +02:00
Felix Bünemann
58a2616f77 New webpsave option smart_subsample 
This enables a high quality RGB to YUV converter in libwebp which
greatly improves the quality of fine details by reducing color bleeding
caused by the 4:2:0 chroma subsampling. This is slower and causes
slightly larger files. See WebPPictureSmartARGBToYUVA in libwebp.
 2016-04-23 01:20:41 +02:00
Felix Bünemann
f834ea39f6 Add lossy compression "preset" option to webpsave 
This allows to tune the lossy webp encoder for certain types of images.
 2016-04-22 23:57:07 +02:00
Felix Bünemann
7f70abd4ba Use advanced WebP Encoding API 
This switch is required to enable encoder configuration.
 2016-04-22 23:57:07 +02:00
John Cupitt
23eaf93867 fix build with graphicsmagick 
GM is still using the old page interface of subimage/subrange, IM has
deprecated that in favour of scene/number_scenes

we were accidentally just supporting the new IM system ... this change
adds support for GM as well, plus a configure test to pick one

see https://github.com/jcupitt/libvips/issues/423
 2016-04-18 15:21:11 +01:00
John Cupitt
f0271f050d note oo stuff 2016-04-18 12:36:55 +01:00
John Cupitt
3517037f1e try and only look for giflib4 
see https://github.com/jcupitt/libvips/issues/407
 2016-04-18 12:34:40 +01:00
John Cupitt
d1e7b78bbd Merge branch 'master' of github.com:jcupitt/libvips 2016-04-17 10:24:18 +01:00
John Cupitt
e66904a74a Merge pull request #424 from lovell/friends-dont-let-friends-break-windows 
Allow MSVC to link CPP overloads introduced in da43a40
 2016-04-17 10:23:10 +01:00
John Cupitt
567ea0c1c2 comment reformat 2016-04-17 10:22:20 +01:00
Lovell Fuller
baa175c4c0 Allow MSVC to link CPP overloads introduced in da43a40 2016-04-15 22:16:29 +01:00
John Cupitt
78c8a8f99f Merge pull request #421 from bgilbert/poppler-version 
Fix required poppler-glib version in AC_MSG_WARN()
 2016-04-15 08:45:50 +01:00
John Cupitt
1e44ab5d39 version bump for 8.3.1 2016-04-15 08:42:36 +01:00
John Cupitt
ab7563dd72 rename vips wrapper script 
it was still vips-8.2, oops, thanks Benjamin
 2016-04-15 08:40:17 +01:00
Benjamin Gilbert
2025b36958 fix required poppler-glib version in AC_MSG_WARN() 2016-04-14 17:38:54 -04:00
John Cupitt
1627440a37 remove a couple of IMAGE 
still loads left, of course
 2016-04-13 15:00:17 +01:00
John Cupitt
2c646a02e4 better jpeg autorot 
jpeg write is more careful about removing exif tags that have been
removed from the image metadata

it failed previously if there were multiple Orientation tags
 2016-04-13 08:39:29 +01:00
John Cupitt
a7e564ed97 autorot looks in every ifd 
some images have multiple orientation tags ... look and remove
orientation tags everywhere
 2016-04-12 18:31:19 +01:00
John Cupitt
5b79403ea3 update history comment for premultiply.c 2016-04-11 21:56:27 +01:00
John Cupitt
263b93aaea Merge pull request #420 from lovell/premultiply-bands-4 
Ensure premultiply fast-path for RGBA is used
 2016-04-11 21:55:02 +01:00
Lovell Fuller
90780d96b8 Ensure premultiply fast-path for RGBA is used. 
Add A suffix to PRE_RGBA macro name to clarify use with 4 bands.
 2016-04-11 18:31:35 +01:00
John Cupitt
d46a57cf6b update notes 2016-04-11 13:27:04 +01:00
John Cupitt
65b9ced6e9 improve arg order 
more consistent
 2016-04-11 13:23:25 +01:00
John Cupitt
269cbb8641 better mask sizing for lanczos 2016-04-11 13:19:00 +01:00
John Cupitt
f58190bccd tag non-int rgb tiff as scrgb 
Photoshop uses 0 - 1 and no gamma for float RGB, so we tag float /
complex RGB tiffs as scRGB

thanks Murat
 2016-04-11 12:37:48 +01:00
John Cupitt
511a0a7da5 better rounding in reducev orc path 2016-04-10 17:52:51 +01:00
John Cupitt
f1635b873d README formatting 2016-04-07 09:45:03 +01:00
John Cupitt
9842ce7902 README formatting 2016-04-07 09:44:31 +01:00
John Cupitt
83fe16054c update file format list in README 2016-04-07 09:42:24 +01:00
John Cupitt
d4382c3032 Merge branch 'master' of github.com:jcupitt/libvips 2016-04-07 09:38:22 +01:00
John Cupitt
6ae2787b13 clarify git builds in README 
see https://github.com/jcupitt/libvips/issues/414
 2016-04-07 09:37:16 +01:00
John Cupitt
c36d7f1d14 tweak draw docs again 
see https://github.com/jcupitt/libvips/issues/411
 2016-04-06 15:11:44 +01:00
John Cupitt
9578d7f637 Merge branch 'master' of github.com:jcupitt/libvips 2016-04-06 10:28:10 +01:00
John Cupitt
bf1c8707c7 better draw docs 
add a caching discussion to the start of draw

see https://github.com/jcupitt/libvips/issues/411
 2016-04-06 10:26:53 +01:00
John Cupitt
5f7cc1d659 Merge pull request #412 from charmander/master 
Remove = in #define
 2016-04-06 10:10:10 +01:00
Charmander
e4f0fbc759 Remove = in #define 2016-04-05 14:00:00 +00:00
John Cupitt
8aa4566c87 update notes 2016-04-02 20:24:54 +01:00
John Cupitt
8fb146029c more tuning of vipsthumbnail 
leave at least a factor of two after shrink-on-load

helps hide aliasing
 2016-04-02 20:09:30 +01:00
John Cupitt
bc320f1090 much better int mask creation 
removes some banding from the orc path for reducev
 2016-04-02 18:46:10 +01:00
John Cupitt
5f24468dba tiny code cleanup, note a bug 2016-04-02 11:25:27 +01:00