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562 Commits

Author SHA1 Message Date
David Carley
3af62446fc Implements greyscale thresholding 2015-11-17 12:15:34 -06:00
David Carley
33a175eafb Implements negation. 2015-11-17 10:18:59 -06:00
Lovell Fuller
5dfeaa9fd1 Ensure gaussian blur is applied before lbb interpolator #289 2015-11-16 08:26:35 +00:00
Lovell Fuller
84fd1caa46 Switch default interpolator to bicubic #289 
Only use gaussian blur for non-linear interpolators

Improves performance of bilinear by ~15%

Add liborc to the packaged build to improve bicubic perf

Add examples of the various interpolation methods

Add bilinear vs bicubic to perf tests
 2015-11-15 22:04:31 +00:00
Lovell Fuller
2678d761ba Use FreeCallback to support mixed Windows runtime libs #152 2015-11-14 13:58:05 +00:00
Lovell Fuller
ede2ee9ce3 Use Persistent wrapper to prevent GC of input Buffer #152 
Avoids memcpy of input and output Buffer objects

Improves Buffer and Stream performance by ~3%
 2015-11-14 11:24:15 +00:00
Lovell Fuller
20f468991f Start to use libvips 8.1.0+ features #152 
Use native (un)premultiply

Support normalise on Windows
 2015-11-12 22:14:53 +00:00
Lovell Fuller
58d9e0fef7 Pre-extract rotate should not swap width/height #296 2015-11-11 22:34:30 +00:00
Lovell Fuller
05cec013fe Ensure support for more Linux flavours 
Add docker-based packaging tests
 2015-11-09 08:37:30 +00:00
Lovell Fuller
f4cbbd7b79 Ensure Windows CI uses x64 2015-11-07 20:22:17 +00:00
Brandon Aaron
25e5f27785 add corner gavity support 2015-10-27 15:10:10 -04:00
Brandon Aaron
79470d2e07 EXIF Orientation tags 2 and 4 were flipping instead of flopping 2015-10-16 15:41:40 -04:00
Chris Riley
ce2d7b8efc Update pipeline.cc 
In the upgrade to nan v2 that was part of v0.11.2 the baton values for blurSigma, sharpenFlat, and sharpenJagged were being cast to int32_t causing blur(sigma) and sharpen(radius, flat, jagged) to fail with "parameters out of range". This patch casts these baton values to doubles.
 2015-09-06 12:29:07 -04:00
Lovell Fuller
409d15c624 Support EXIF Orientation removal in libvips v8.1.0 
See #189 and jcupitt/libvips@fbe321e
 2015-08-24 21:48:38 +01:00
Lovell Fuller
4e67a5025a Use malloc for Nan::NewBuffer owned data 
GC results in free() rather than delete[]

Add plenty of new valgrind suppressions
 2015-08-24 16:14:49 +01:00
Lovell Fuller
b7e0a6f277 Upgrade to nan v2 #246 
Provides support for io.js v3 and Node v4
 2015-08-23 21:36:48 +01:00
Lovell Fuller
01435977de Blur and sharpen ops always convolve 
Partial revert of 36ac882
 2015-08-12 07:25:14 +01:00
Lovell Fuller
36ac8828f2 Gamma correction and premultiply do not mix 
Skip premultiply for fast blur/sharpen

Automate gamma correction tests
 2015-08-11 21:51:22 +01:00
Lovell Fuller
de333eb02d Add PPA details for Ubuntu LTS 
Remove Mac OS from preinstall script - please use homebrew
 2015-07-16 09:28:54 +01:00
Lovell Fuller
d303703dc5 Allow override of EXIF Orientation tag #189 
Clear Orientation when rotate/flip/flop are used
 2015-07-13 20:00:33 +01:00
Lovell Fuller
642e5687b6 Guard against unexpected overlay band format #97 2015-07-11 22:56:18 +01:00
Lovell Fuller
2ec845b083 Create normalize/blur/sharpen operations 
Reduces pipeline by ~100 LOC
 2015-07-11 21:44:39 +01:00
Lovell Fuller
b8885c1faa Auto-width and height calcs now round instead of floor 
I think this will better match people's expectations
 2015-07-03 15:21:28 +01:00
Lovell Fuller
321e0f2bfe Add 'icc' raw profile data to metadata #129 2015-06-29 21:27:23 +01:00
Lovell Fuller
6ac47c1ef8 Add raw EXIF data to metadata response 
Copy metadata input buffer to match pipeline

Prevents possible metadata segfault under load
 2015-06-28 23:35:40 +01:00
Lovell Fuller
86490bedfb Add 'clone' method to snapshot an instance 
Cloned instances share a common input
Allows multiple output Streams to use a single input Stream
 2015-06-28 14:21:02 +01:00
Lovell Fuller
1091be374e Alpha compositing: support grey+alpha src and non-alpha dst 2015-06-02 14:51:08 +01:00
Lovell Fuller
36be0453dd Refactor internal 'resize' to more apt 'pipeline' 
Refactor 'composite' C to C++ 'operations'
 2015-06-01 16:33:26 +01:00
Lovell Fuller
f19b6c48ca Skip normalise operation for images with one colour 
It didn't play nicely with premultiplication
 2015-06-01 14:21:02 +01:00
Lovell Fuller
8832ae0bf9 Add private maxColourDistance for functional tests 
Switch MSE-based tests to use it

Remove experimental MSE-based compare API
 2015-06-01 14:21:02 +01:00
Daniel Gasienica
ef8db1eebf Premultiply alpha channel to avoid dark artifacts during tranformation 
Add `Sharp.compare(file1, file2, callback)` function for comparing images
using mean squared error (MSE). This is useful for unit tests.

See:
- https://github.com/jcupitt/libvips/issues/291
- http://entropymine.com/imageworsener/resizealpha/
 2015-06-01 14:21:02 +01:00
Lovell Fuller
c792a047b1 Ensure libvips version requirement 
Should improve debugging, e.g. #222
 2015-06-01 14:21:01 +01:00
Daniel Gasienica
64f7f1d662 Add experimental overlayWith API 
Composites an overlay image with alpha channel into the input image (which
must have alpha channel) using ‘over’ alpha compositing blend mode. This API
requires both images to have the same dimensions.

References:
- http://en.wikipedia.org/wiki/Alpha_compositing#Alpha_blending
- https://github.com/jcupitt/ruby-vips/issues/28#issuecomment-9014826

See #97.
 2015-06-01 14:21:01 +01:00
Lovell Fuller
fa8f06f07d Include C standard library for 'atoi' #228 
Xcode 6.3 appears to no longer do this
 2015-05-31 19:05:18 +01:00
Lovell Fuller
e07a105b7c Test availability of __has_feature macro 2015-05-11 11:54:53 +01:00
Lovell Fuller
4f72dcbf54 Verify platform/compiler compatibility #178 #214 2015-05-11 10:46:47 +01:00
Lovell Fuller
33782d3c83 Embed alpha image on non-transparent background #204 2015-04-29 20:14:45 +01:00
Lovell Fuller
d1fc0591a5 Silence Windows compiler warnings #19 2015-04-21 14:39:37 +01:00
Lovell Fuller
1e52c2dbe6 Windows compatibility #19 
Hide WebP format and normalise option

Separate test runners for node and iojs
 2015-04-21 12:13:19 +01:00
Lovell Fuller
8926ebc56c Add Appveyor config for Windows CI 
Silence 'possible loss of data' warning
 2015-04-20 19:00:22 +01:00
Lovell Fuller
9da87ce868 Fix typo in conditional introduced in 8ac33aa 2015-04-20 17:50:47 +01:00
Bernhard K. Weisshuhn
8ac33aad69 avoid segfault with unknown interpolator 2015-04-20 00:24:03 +02:00
Lovell Fuller
a0655806de No need to remove dzi file extension 
libvips handles this - ensures filenames containing . work
 2015-04-19 21:08:15 +01:00
Lovell Fuller
f6fd45cc90 Expose libjpeg extension param features 
Trellis quantisation, overshoot deringing and scan optimisation
 2015-04-19 16:15:40 +01:00
Bernhard K. Weisshuhn
dce36e0074 Add normalize() for simple histogram stretching 
Available as normalize() or normalise().
Normalization takes place in LAB place and thus should not change any
colors.

Existing alpha channels are preserved untouched by normalization.
 2015-04-18 12:55:04 +02:00
Alaric Holloway
f72435c750 Support resize without preserving aspect ratio #118 2015-04-16 06:50:47 -07:00
Lovell Fuller
3810f642d3 Add small cache before convolution for seq access 2015-04-14 21:31:20 +01:00
Lovell Fuller
ce6813329b Improve code portability ahead of Windows support 2015-04-05 21:57:53 +01:00
Lovell Fuller
81c710eaa3 Add EventEmitter for queue length changes 
Remove unnecessary params from Error handler
 2015-03-20 15:44:18 +00:00
Lovell Fuller
9b5229f2dd Support old and new Magick loader class names 
See jcupitt/libvips@99b4bcb
 2015-03-12 17:12:06 +00:00