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Author SHA1 Message Date
John Cupitt
db20d70495 fix some more compiler warnings 
and a bit of formatting
 2016-01-26 15:10:46 +00:00
John Cupitt
2698688c94 oops spelling 2016-01-26 13:37:56 +00:00
John Cupitt
4d18300560 add VIPS_FABS/MAX/MIN/CLIP 
macros which use the gcc __builtin_fabs() etc. functions when they can
 2016-01-26 12:26:21 +00:00
John Cupitt
baf5e860e3 Merge pull request #374 from lovell/conv-allow-vectorise 
Improve convolution performance by 20-25%
 2016-01-26 09:18:11 +00:00
Lovell Fuller
0cac224431 Replace use of "Duff's device" with for-loop to allow compiler to optimise. 
Reduces CPU instruction count of conv_gen function by ~30%.
Improves performance of convolution operation by 20-25%.
 2016-01-25 21:17:41 +00:00
John Cupitt
73bcc8b5d3 improve the using-C docs 
add some stuff on giving options to operations

see https://github.com/jcupitt/libvips/issues/373
 2016-01-25 09:35:06 +00:00
John Cupitt
07a1903390 use g_assert_not_reached() 
we were using g_assert(0) ... g_assert_not_reached() makes the
intention clearer
 2016-01-24 13:21:53 +00:00
John Cupitt
31e4168718 clip bicubic output range from int 
The output range of the bicubic interpolator is outside the input range,
we must clip from a larger type.

See https://github.com/jcupitt/libvips/pull/372
 2016-01-23 10:09:11 +00:00
John Cupitt
0dd7f14ada put interpolate param back 
Although no current interpolators use the interpolate param, having it
there makes it possible for other (perhaps user-defined) interpolators
to be parameterised.

For example, you could write:

	vips affine in.v out.v "2 0 0 2" --interpolate sharp[2]

and `sharp` could do a bicubic and sharpen by 2 in a single operation.

See https://github.com/jcupitt/libvips/pull/372
 2016-01-23 09:57:27 +00:00
John Cupitt
a7d889df06 use builtin floor / ceil 
get rid of FAST_PSEUDO_FLOOR, add VIPS_FLOOR and VIPS_CEIL, use them
everywhere

see https://github.com/jcupitt/libvips/pull/372
 2016-01-23 09:50:57 +00:00
John Cupitt
e025a04d68 Merge pull request #372 from lovell/resample-builtin-floor 
Small perf improvements to vips_affine + bicubic
 2016-01-23 09:28:34 +00:00
Lovell Fuller
25eeb82de6 Consolidate FAST_PSEUDO_FLOOR macros, prefer __builtin_floor if available 
Use of vips_interpolate_get_method avoids need to pass interpolate instance
Remove an unnecessary temp variable to help prevent register starvation

5% less time in vips_interpolate_bicubic_interpolate
10% less time in vips_affine_gen
 2016-01-22 22:26:29 +00:00
John Cupitt
f3e3514b03 test embed profile in tiff 
test embed from file
 2016-01-22 22:06:20 +00:00
John Cupitt
66e0676a40 fix compiler warning 2016-01-22 17:44:43 +00:00
John Cupitt
94db738773 fix double free on tiff write 
if you attached a profile to a tiff from a file during write, you'd get
a double-free

see https://github.com/jcupitt/libvips/issues/371
 2016-01-22 17:43:42 +00:00
John Cupitt
923fb43ae9 clear up tiny docs issue 
not about SEQ behaviour
 2016-01-22 15:02:18 +00:00
John Cupitt
c7eb88b87f fix subsample at the command-line 
it had the SEQ flag set, causing confusion with vips_sequential() when
it skipped scanlines on startup

see https://github.com/jcupitt/libvips/issues/370
 2016-01-22 14:37:42 +00:00
John Cupitt
9b968491d3 unroll shrinkh inner loop 
use VIPS_UNROLL for the inner loop, another 5% or so
 2016-01-22 10:21:38 +00:00
John Cupitt
dce70c82a5 vectorise vips_shrinkh() 
add special paths for 1, 3 and 4 bands so we can vectorise

see https://github.com/jcupitt/libvips/pull/369
 2016-01-22 09:49:20 +00:00
John Cupitt
2e5880b69c speed up for vips_shrinkh() 
remove the sum buffer, we can just use a local, about 5% faster

see https://github.com/jcupitt/libvips/pull/369
 2016-01-22 09:15:38 +00:00
John Cupitt
d29710db66 Merge pull request #369 from lovell/shrinkh-loop-vector 
Allow compiler to use vector unit with vips_shrinkh for ~25% boost
 2016-01-22 08:50:02 +00:00
Lovell Fuller
572354b793 Allow compiler to vectorise vips_shrinkh 
Reduce for-loop count in shrinkh macros
Don't access loop variable outside loop
Remove unnecessary use of ceil from integer
 2016-01-21 20:18:56 +00:00
John Cupitt
16b76b2cfd Merge branch 'master' of github.com:jcupitt/libvips 2016-01-21 07:47:14 +00:00
John Cupitt
89d1127de6 Merge pull request #368 from lovell/builtin-isnan-isinf 
Use gcc/clang isnan and isinf builtin functions, where available
 2016-01-21 07:22:35 +00:00
Lovell Fuller
90c1fb9a94 Use gcc/clang isnan and isinf builtin functions where available. 
These are used heavily in the building of look-up tables at
start-up time and therefore improve vipsthumbnail perf by ~4%.
 2016-01-20 19:02:14 +00:00
John Cupitt
d3f87c5f44 notes 2016-01-20 11:58:59 +00:00
John Cupitt
af8b43b16d fix to make check in non-C locales 
"make check" uses bc, which needs '.' as a decimal sep.

https://github.com/jcupitt/libvips/issues/367
 2016-01-17 09:29:25 +00:00
John Cupitt
4512400a3c better rounding in new bilinear interp 
was off by 0.5
 2016-01-14 13:13:08 +00:00
John Cupitt
6ca9a907b8 reorder load tests 
and a slight memory saving on ifthenelse
 2016-01-13 20:32:23 +00:00
John Cupitt
52384606dd bump version for new C++ patch 2016-01-12 17:12:46 +00:00
John Cupitt
eeb0ef7ae4 Merge pull request #363 from lovell/vips-cpp-win 
Enable compilation of vips8 C++ bindings with MSVC
 2016-01-11 18:44:52 +00:00
Lovell Fuller
20ae80397d Enable compilation of vips8 C++ bindings with MSVC 
Add VIPS_CPLUSPLUS_API macro to allow DLL creation
 2016-01-11 17:56:02 +00:00
John Cupitt
50db131865 VImage::get_typeof() returns GType 
it was int, causing some compiler warnings on some platforms.

see https://github.com/jcupitt/libvips/issues/362
 2016-01-09 20:27:14 +00:00
John Cupitt
bf64fde872 regen C++ interface 2016-01-09 15:08:17 +00:00
John Cupitt
66373e9b41 remove exception specs from vips8 C++ interface 
We had exception specs on the C++ interface, but C++11 does not support
them and some compilers have never honoured them. Remove all specs.
Thanks Lovell.

See https://github.com/jcupitt/libvips/issues/362
 2016-01-09 14:52:05 +00:00
John Cupitt
3be5af9779 silence a clang warning 2016-01-09 14:51:35 +00:00
John Cupitt
9419e07a6b remove a lock from VImage.cc 
it wasn't really needed, and windows will barf with pointers across
DLLs
 2016-01-08 13:40:58 +00:00
John Cupitt
b85231baba small doc improvements 2016-01-07 11:16:12 +00:00
John Cupitt
98f4a64a86 better Vips.py class names builder 2016-01-05 08:00:40 +00:00
John Cupitt
e27aa4488a clearer changelog entry 2016-01-04 17:24:00 +00:00
John Cupitt
e81900b187 bandjoin is just an instance function 
we had both a class member bandjoin, and an instance member

Vips.Image.bandjoin([i1, i2, i3..])
i1.ibandjoin([i2, i3..])

this was confusing and annoying ... get rid of the class one and just
use bandjoin everywhere, so this is now the way to do it:

i1.bandjoin([i2, i3..])
 2016-01-04 14:18:10 +00:00
John Cupitt
e6cbdbb516 add a stub for compat 
see https://github.com/jcupitt/libvips/issues/361
 2016-01-01 10:58:53 +00:00
John Cupitt
69d10ea4b2 add C decls for bandjoin_const 
oops, forgot them
 2015-12-30 16:30:56 +00:00
John Cupitt
8ce10058eb oop, missed a vips-8.1 2015-12-30 11:49:32 +00:00
John Cupitt
813e91c682 rename vips wrapper script 2015-12-30 11:31:59 +00:00
John Cupitt
dbf9a5ed1c fix dzsave tile-width default 
was wrong for google / zoomify layouts

revise tests too
 2015-12-30 11:23:33 +00:00
John Cupitt
aa635f7816 Merge pull request #360 from ericcorriel/master 
fixing typo, should be Ifdef
 2015-12-28 11:03:35 +00:00
Eric Corriel
630f8bb02b fixing typo, should be IFDEF 2015-12-27 20:39:55 -05:00
John Cupitt
8302e2ffcd notes on dzsave change 
see https://github.com/jcupitt/libvips/pull/359
 2015-12-23 09:16:58 +00:00
John Cupitt
2efb5c1718 Merge pull request #359 from gasi/patch-1 
Use 254 pixels as default tile size
 2015-12-22 21:15:48 +00:00