module Vips

Overview

Provides Crystal language interface to the libvips image processing library. Programs that use libvips don't manipulate images directly, instead they create pipelines of image processing operations starting from a source image. When the pipe is connected to a destination, the whole pipeline executes at once and in parallel, streaming the image from source to destination in a set of small fragments.

Defined in:

vips.cr
vips/connection.cr
vips/ext/image.cr
vips/ext/mutableimage.cr
vips/gobject.cr
vips/gvalue.cr
vips/image.cr
vips/interpolate.cr
vips/introspect.cr
vips/mutableimage.cr
vips/operation.cr
vips/region.cr
vips/source.cr
vips/stats.cr
vips/target.cr
vips/vips.cr
vips/vipsblob.cr
vips/vipsobject.cr

Constant Summary

VERSION = {{ (`shards version \"/home/runner/work/crystal-vips/crystal-vips/src\"`).chomp.stringify }}

Class Method Summary

• .at_least_libvips?(x : Int, y : Int, z = 0)

  Is this at least libvips major.minor.[.patch]?

• .clear_error
• .concurrency

  Returns the number of worker threads that vips uses for image evaluation.

• .concurrency=(value : Int)

  Set the size of the pools of worker threads vips uses for image evaluation.

• .default_concurrency : Int32

  Track the original default concurrency so we can reset to it.

• .enum_values(type : LibC::ULong)

  Get all values for a enum (GType).

• .free(mem : Pointer(Void))

  Frees the memory pointed to by mem

• .fundamental_type(type : LibC::ULong)

  Extract the fundamental type ID portion.

• .get_enums

  Get a list of enums available within the libvips library.

• .get_operations

  Get a list of operations available within the libvips library.

• .get_suffixes

  Get a list of all the filename suffixes supported by libvips Note: At least libvips 8.8 is needed

• .init

  Starts up the world of VIPS.

• .initialized?

  Flag to tell if libvips has been initialized or not.

• .leak=(leak)

  Enable or disable libvips leak checking.

• .leak?

  Enable or disable libvips leak checking.

• .nickname(type : LibC::ULong)

  Return the nickname for a GType.

• .profile(profile)
• .profile=(profile)

  Enable or disable libvips profile recording.

• .profile?

  Enable or disable libvips profile recording.

• .report_leaks

  Reports leaks (hopefully there are none) it also tracks and reports peak memory use.

• .shutdown
• .type_from_name(nickname : String)

  Return the GType for a name.

• .typefind(basename : String, nickname : String)

  Get the GType for a name.

• .typename(type : LibC::ULong)

  Returns the name for a GType

• .vector=(val : Bool)

  Enable SIMD and the run-time compiler.

• .vector?

  Returns if SIMD and the run-time compiler is enabled or not

• .version(flag : Int)

  Get the major, minor or patch version number of the libvips library.

• .version

  Returns version of libvips in 3-byte integer

• .version_string

  Returns version string of libvips

Class Method Detail