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Author SHA1 Message Date
Lovell Fuller
8a34ba6e14 Ensure interlaced PNG input works with libpng16 
Manually calling png_set_interlace_handling results in the internal
num_rows member of the opaque png_structp not being correctly set.

This appears to be a limitation of libpng so probably needs fixing
upstream before the png_set_interlace_handling call can be re-added.
 2017-12-04 21:47:52 +00:00
John Cupitt
dcf8588b97 notes for blend mode members 2017-12-04 14:26:55 +00:00
John Cupitt
c5139a0e50 doc fixups 
various small things; fix the docs for composite, reduceh and reducev
 2017-12-04 13:42:31 +00:00
John Cupitt
0702a01e60 Merge branch 'master' of github.com:jcupitt/libvips 2017-12-04 12:01:08 +00:00
John Cupitt
b876f1d904 try to fix composite docs 2017-12-04 10:40:43 +00:00
John Cupitt
7182276c4d cite was in there twice 2017-12-02 13:06:17 +00:00
John Cupitt
c8abaf4f80 update py notes in README 2017-12-01 15:57:26 +00:00
John Cupitt
60bd5f6512 add composite2 to notes 2017-12-01 13:37:15 +00:00
John Cupitt
0fb6e5a711 Merge branch 'add-extra-dzsave-tiles' 2017-12-01 13:36:12 +00:00
John Cupitt
13a693c8bc Merge branch 'master' into add-extra-dzsave-tiles 2017-12-01 13:33:54 +00:00
John Cupitt
14fd2af396 add composite2 class 
so we have a nice CLI interface to the new operator
 2017-11-30 12:47:56 +00:00
John Cupitt
df28948b9d typo 2017-11-29 12:51:07 +00:00
John Cupitt
9c8790b40a setting EXIF data blocks sets other tags too 
calling vips_image_set() to set the EXIF data block VIPS_META_EXIF_NAME
will automaticaly set other tags, like orientation etc.
 2017-11-27 15:15:21 +00:00
John Cupitt
6013962288 better exif write 
only remove exif fields not on the image if we made the exif from the saved exif data on the image
 2017-11-27 05:54:10 +00:00
John Cupitt
de7636c66b remove "throw" from c++ autogen tools 
and output
 2017-11-26 17:55:50 +00:00
John Cupitt
10eef89a7f update c++ bindings 2017-11-26 17:45:04 +00:00
John Cupitt
955a5a97cc sRGB2scRGB uses the colour luts directly 
rather than going via a function that clips ... about 2x faster
 2017-11-26 16:47:24 +00:00
John Cupitt
406e228c9b vips_resize() is always centre convention 
it was corner for downsize, but should be centre to match imagemagick
 2017-11-26 15:24:40 +00:00
John Cupitt
3754ddb947 remove centre from resize in thumbnail 
thanks kleis
 2017-11-26 12:01:30 +00:00
John Cupitt
0363ac6ab9 fix indexed hist combine mode 
it now tracks which bins have been inited, so min works
 2017-11-25 21:23:10 +00:00
John Cupitt
ee4186ae8f revise resize docs 2017-11-25 15:13:20 +00:00
John Cupitt
7db13412e5 deprecate centre option to resize 
it's now centre on upsize, corner on downsize

see https://github.com/jcupitt/libvips/issues/705
 2017-11-25 14:22:20 +00:00
John Cupitt
cb128eb258 apply --centre to upsize as well as down 
we were just using the --centre flag in resize to influence downsize
behaviour -- use it to set upsize as well

see https://github.com/jcupitt/libvips/issues/705
 2017-11-25 12:09:01 +00:00
John Cupitt
bb81113312 add credits 2017-11-24 22:12:41 +00:00
John Cupitt
bb0772da51
Merge pull request #815 from lovell/premultiply-match-types 
(Un)premultiply: ~10-15% speedup by matching clipped alpha type with IN/OUT
 2017-11-24 22:08:50 +00:00
John Cupitt
bbc2f4e1f8
Merge pull request #816 from lovell/srgb2scrgb-optimise-3-4-band 
Colour: ~20% sRGB to scRGB speedup for 3/4 channel images
 2017-11-24 21:52:37 +00:00
Lovell Fuller
cac1b5b9c6 ~20% sRGB to scRGB speedup for common 3 and 4 band images 2017-11-24 21:45:00 +00:00
Lovell Fuller
7e23a140c4 ~10% speedup by matching clipped alpha type with IN/OUT 
Improves unpremultiply precision for float/double input
 2017-11-24 19:20:29 +00:00
John Cupitt
5664a0d9b1 dzsave outputs extra tiles along right and bottom 
the deepzoom spec wants tiles to be written along the right and bottom,
even of those tiles contain no new pixels

this patch seems to work, but needs testing

see: https://github.com/jcupitt/libvips/issues/795
 2017-11-24 15:54:22 +00:00
John Cupitt
f9f717a843 add VIPS_ONCE and use it everywhere 
Lovell's idea: save the function call in the most common case
 2017-11-23 08:43:08 +00:00
John Cupitt
8806e7039e
Merge pull request #813 from lovell/sRGB2scRGB-once-unlikely 
Colour: ~20% speedup for sRGB to scRGB pixel conversion
 2017-11-23 08:10:42 +00:00
Lovell Fuller
cef897ece8 ~20% speedup for sRGB to scRGB pixel conversion 
by checking GOnce status with branch expectation
 2017-11-23 07:36:19 +00:00
John Cupitt
72a493d2e6 fix build against giflib4 2017-11-22 19:52:40 +00:00
John Cupitt
6a4b249445 add dispose handling 
see https://github.com/jcupitt/php-vips/issues/59
 2017-11-22 17:37:31 +00:00
John Cupitt
27621733f2 add gif-comment 2017-11-22 13:10:06 +00:00
John Cupitt
c008bdddca gifload reports first delay, not last 
many GIFs have a long delay on the final frame
 2017-11-22 11:12:11 +00:00
John Cupitt
7aed4c04e7 fix gif-loop metadata 
thanks Christian Stocker
 2017-11-21 18:06:49 +00:00
John Cupitt
5361903fae make gif delay default to 4 
should match imagemagick
 2017-11-21 16:08:26 +00:00
John Cupitt
e56282e1fd add gif-loop metadata 
see https://github.com/rokka-io/imagine-vips/issues/3
 2017-11-21 16:04:18 +00:00
John Cupitt
b611f46d5a better gif delay decode 2017-11-21 15:09:44 +00:00
John Cupitt
d0c7f9d040 fix page-height in gifload 
and add support for "gif-delay" metadata item
 2017-11-21 11:21:27 +00:00
John Cupitt
8497840d97
Merge pull request #811 from lovell/smartcrop-luminance 
Smartcrop: ~19% speedup by getting luminance from LAB instead of LCH
 2017-11-21 08:31:53 +00:00
Lovell Fuller
e8b0e455d8 Take luminance value from LAB instead of LCH 
Avoids costly atan2 conversion to polar coords
 2017-11-20 20:56:45 +00:00
John Cupitt
43288833b9
Merge pull request #810 from lovell/smartcrop-clamp-sigma 
Smartcrop: clamp sigma to avoid out of range warnings
 2017-11-20 17:41:33 +00:00
Lovell Fuller
caa0988256 Clamp minimum sigma to avoid out of range warnings 2017-11-19 20:22:19 +00:00
John Cupitt
a4b89aa370 credit for affine fixup 2017-11-18 15:11:02 +00:00
John Cupitt
65cfe2e7c0 Merge branch 'master' into fix-affine-jaggies 2017-11-18 15:10:50 +00:00
John Cupitt
2815647ce3 fix background for affine on alpha images 
need to convert to ink for premultiplied space
 2017-11-18 13:42:00 +00:00
John Cupitt
e179e3b11f premultiply alpha (if necessary) in affine 2017-11-18 10:59:20 +00:00
John Cupitt
cd898c52de
Merge pull request #808 from lovell/prefer-sqrt-to-pow-0.5 
Prefer ~10x faster sqrt instead of pow when y=0.5
 2017-11-17 22:11:23 +00:00