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190 Commits

Author SHA1 Message Date
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
Lovell Fuller
5781a23a4d Combine new tile* API methods 
Use v7.40.0+ libvips loader methods

Separate Openslide as input vs Deep Zoom as output

Split tile-based tests into new file

Added assertions for generated tile size
 2015-03-12 15:39:27 +00:00
Victor Mateevitsi
2d1e6f2644 Added Deep Zoom support. 
Added OpenSuse 13.1 and 13.2 support in preinstall.sh script.
Added OpenSlide support in preinstall script.
Added unit tests for Deep Zoom and OpenSlide.
 2015-03-10 14:00:27 +00:00
Maurus Cuelenaere
125ee836fe Let libvips check whether we received a valid image or not 
This removes the custom image fingerprinting code and uses the libvips
is_a_buffer() infrastructure instead.
 2015-03-01 11:53:17 +01:00
Lovell Fuller
77bbbb9715 Improve min/max docs, thanks @LinusU 
Add requirement for C++11 compiler

Init scaling factor to silence compiler warning
 2015-02-27 13:49:16 +00:00
Linus Unnebäck
bcd82f4893 feature: min 2015-02-27 13:50:52 +01:00
Lovell Fuller
c7ccf6801d Expose runtime format availability 
Aids addition of new format/method combos

Dogfood this in the test code
 2015-02-26 19:41:33 +00:00
Lovell Fuller
f89e9d726d Add support for libvips v8.0.0 2015-02-16 13:27:22 +00:00
Maurus Cuelenaere
ab7408c96f Add support for loading images through ImageMagick as a buffer 2015-02-16 10:12:59 +01:00
Lovell Fuller
1f7e80e581 Add chroma subsampling options for JPEG output 2015-02-13 09:41:42 +00:00
Lovell Fuller
0e91ca90d6 Remove lingering NanAdjustExternalMemory 
Should have been removed in fe34548b
 2015-02-12 12:15:56 +00:00
Lovell Fuller
83ebe12061 Remove atexit handler as libvips defines this 
New grunt-sharp build tool

Version bump for latest libvips
 2015-01-22 14:17:20 +00:00
Lovell Fuller
fe34548bad Remove optional AdjustAmountOfExternalAllocatedMemory #151 
Isolate not available when deleting the buffer
 2015-01-21 20:13:43 +00:00
Lovell Fuller
855945bef2 Delete input buffer on postclose #151 
Notify V8 GC of memory (de)allocation
 2015-01-21 10:34:03 +00:00
Lovell Fuller
8421e3aa5f Add limitInputPixels option to reject input #115 2015-01-20 14:18:05 +00:00
Lovell Fuller
c93f79daa7 Guard against InitImage failure #150 
Protects against truncated image headers
 2015-01-20 10:38:44 +00:00
Lovell Fuller
c158d51f8b Explicit cast to uint32 required for nan 1.5.x 
See rvagg/nan#229
 2015-01-16 22:31:46 +00:00
Lovell Fuller
8e9a8dfede Remove cpplint namespace-related warnings 2015-01-16 22:31:46 +00:00
Lovell Fuller
b86674f91f Add cpplint to test suite 2015-01-16 22:31:46 +00:00
Lovell Fuller
5dab3c8482 Allow rotate before pre-resize extraction #145 2015-01-16 22:30:57 +00:00
Lovell Fuller
a190ae6b08 Add raw, uncompressed image data output #136 2015-01-16 22:28:24 +00:00
Lovell Fuller
065ce6454b Explicit cast of size_t to 32 bit integer 
Ensures compilation with nan 1.5.0+
 2015-01-15 15:16:01 +00:00
Lovell Fuller
d3225fa193 Add 'size' attribute to callback's info Object #138 2014-12-15 13:54:19 +00:00