Namespace

Gegl – 0.4

GEGL library

Version0.4.58
AuthorsGEGL contributors
LicenseLGPL-3.0-or-later
Websitehttps://www.gegl.org/
Sourcehttps://gitlab.gnome.org/GNOME/gegl/

Build

C headersgegl.h
pkg-config filesgegl-0.4

Dependencies

Babl—0.1 Pixel encoding and color space conversion engine
Browse documentation
GLib—2.0 C Utility Library
Browse documentation
GObject—2.0 The base type system library
Browse documentation

Additional documentation

Classes

AudioFragment

since: 0.4

Buffer

since: 0.4

Color

since: 0.4

Config

since: 0.4

Curve

since: 0.4

MetadataHash

since: 0.4

MetadataStore

since: 0.4

Node

since: 0.4

Operation

since: 0.4

ParamAudioFragment

since: 0.4

ParamColor

since: 0.4

ParamCurve

since: 0.4

ParamDouble

since: 0.4

ParamEnum

since: 0.4

ParamFilePath

since: 0.4

ParamFormat

since: 0.4

ParamInt

since: 0.4

ParamPath

since: 0.4

ParamSeed

since: 0.4

ParamString

since: 0.4

ParamUri

since: 0.4

Path

since: 0.4

Processor

since: 0.4

Stats

since: 0.4

TileBackend

since: 0.4

TileHandler

since: 0.4

TileSource

since: 0.4

Interfaces

Metadata

since: 0.4

Structs

BufferIterator

since: 0.4

BufferIteratorItem

since: 0.4

BufferIteratorPriv

since: 0.4

BufferMatrix2

since: 0.4

Lookup

since: 0.4

Matrix3

since: 0.4

MetadataIter

An opaque type representing a metadata iterator.

since: 0.4

MetadataMap

Struct to describe how a metadata variable is mapped from the name used by the image file module to the name used by Gegl. An optional transform function may be specified, e.g. to transform from a GDatetime to a string.

since: 0.4

OperationContext

since: 0.4

ParamSpecDouble

since: 0.4

ParamSpecEnum

since: 0.4

ParamSpecFilePath

since: 0.4

ParamSpecFormat

since: 0.4

ParamSpecInt

since: 0.4

ParamSpecSeed

since: 0.4

ParamSpecString

since: 0.4

ParamSpecUri

since: 0.4

PathItem

since: 0.4

PathList

since: 0.4

PathPoint

since: 0.4

Random

since: 0.4

Rectangle

since: 0.4

Sampler

since: 0.4

Tile

since: 0.4

TileCopyParams

since: 0.4

Enumerations

AbyssPolicy

since: 0.4

BablVariant

since: 0.4

CachePolicy

since: 0.4

DistanceMetric

since: 0.4

DitherMethod

since: 0.4

MapFlags

Flags controlling the mapping strategy.

since: 0.4

Orientation

since: 0.4

RectangleAlignment

since: 0.4

ResolutionUnit

An enumerated type specifying resolution (density) units. If resolution units are unknown, X and Y resolution specify the pixel aspect ratio.

since: 0.4

SamplerType

since: 0.4

SplitStrategy

since: 0.4

TileCommand

since: 0.4

Bitfields

AccessMode

since: 0.4

BlitFlags

since: 0.4

PadType

since: 0.4

SerializeFlag

since: 0.4

Callbacks

FlattenerFunc

since: 0.4

LookupFunction

since: 0.4

NodeFunction

since: 0.4

ParallelDistributeAreaFunc

Specifies the type of function passed to gegl_parallel_distribute_area().

since: 0.4

ParallelDistributeFunc

Specifies the type of function passed to gegl_parallel_distribute().

since: 0.4

ParallelDistributeRangeFunc

Specifies the type of function passed to gegl_parallel_distribute_range().

since: 0.4

SamplerGetFun

since: 0.4

TileCallback

since: 0.4

TileSourceCommand

since: 0.4

Functions

apply_op

Apply the operation to buffer, overwritting the contents of buffer.

since: 0.4

apply_op_valist

Apply the operation to buffer, overwritting the contents of buffer.

since: 0.4

babl_variant

since: 0.4

calloc

Allocated 0’d memory.

since: 0.4

cl_disable

Disable OpenCL.

since: 0.4

cl_init

Initialize and enable OpenCL, calling this function again will re-enable OpenCL if it has been disabled.

since: 0.4

cl_is_accelerated

Check if OpenCL is enabled.

since: 0.4

config

Returns a GeglConfig object with properties that can be manipulated to control GEGLs behavior.

since: 0.4

create_chain

Create a node chain from an unparsed commandline string.

since: 0.4

create_chain_argv

Create a node chain from argv style list of op data.

since: 0.4

exit

Call this function when you’re done using GEGL. It will clean up caches and write/dump debug information if the correct debug flags are set.

since: 0.4

filter_op

Apply the operation to source_buffer, returning the result in a new buffer.

since: 0.4

filter_op_valist

Apply the operation to source_buffer, returning the result in a new buffer.

since: 0.4

format

Returns a value sutable to pass to the GeglBuffer constructor or any other property that expects a Babl format.

since: 0.4

format_get_name

since: 0.4

free

Frees the memory pointed to by mem. If mem is NULL, does nothing.

since: 0.4

get_option_group

Returns a GOptionGroup for the commandline arguments recognized by GEGL. You should add this group to your GOptionContext with g_option_context_add_group() if you are using g_option_context_parse() to parse your commandline arguments.

since: 0.4

get_version

This function fetches the version of the GEGL library being used by the running process.

since: 0.4

graph_dump_outputs

Dump the bounds and format of each node in the graph to stdout.

since: 0.4

graph_dump_request

Dump the region that will be rendered for each node to fulfill the request.

since: 0.4

has_operation

since: 0.4

init

Call this function before using any other GEGL functions. It will initialize everything needed to operate GEGL and parses some standard command line options. argc and argv are adjusted accordingly so your own code will never see those standard arguments.

since: 0.4

is_main_thread

since: 0.4

list_operations

since: 0.4

load_module_directory

Load all gegl modules found in the given directory.

since: 0.4

malloc

Allocates n_bytes of memory. If n_bytes is 0, returns NULL.

since: 0.4

memeq_zero

Checks if all the bytes of the memory block ptr, of size size, are equal to zero.

since: 0.4

memset_pattern

Fill dst_ptr with count copies of the bytes in src_ptr.

since: 0.4

parallel_distribute

Distributes the execution of a function across multiple threads, by calling it with a different index on each thread.

since: 0.4

parallel_distribute_area

Distributes the processing of a planar data-structure across multiple threads, by calling the given function with different sub-areas on different threads.

since: 0.4

parallel_distribute_range

Distributes the processing of a linear data-structure across multiple threads, by calling the given function with different sub-ranges on different threads.

since: 0.4

param_spec_audio_fragment

Creates a new GParamSpec instance specifying a GeglAudioFragment property.

since: 0.4

param_spec_color

Creates a new GParamSpec instance specifying a GeglColor property.

since: 0.4

param_spec_color_from_string

Creates a new GParamSpec instance specifying a GeglColor property.

since: 0.4

param_spec_color_get_default

Get the default color value of the param spec.

since: 0.4

param_spec_curve

Creates a new GParamSpec instance specifying a GeglCurve property.

since: 0.4

param_spec_double

Creates a new GeglParamSpecDouble instance.

since: 0.4

param_spec_enum

Creates a new GeglParamSpecEnum instance.

since: 0.4

param_spec_file_path

Creates a new GeglParamSpecFilePath instance.

since: 0.4

param_spec_format

Creates a new GeglParamSpecFormat instance specifying a Babl format.

since: 0.4

param_spec_get_property_key

since: 0.4

param_spec_int

Creates a new GeglParamSpecInt instance.

since: 0.4

param_spec_path

Creates a new GParamSpec instance specifying a GeglPath property.

since: 0.4

param_spec_seed

Creates a new GeglParamSpecSeed instance specifying an integer random seed.

since: 0.4

param_spec_set_property_key

since: 0.4

param_spec_string

Creates a new GeglParamSpecString instance.

since: 0.4

param_spec_uri

Creates a new GeglParamSpecUri instance.

since: 0.4

render_op

Apply the operation to source_buffer, writing the results to target_buffer.

since: 0.4

render_op_valist

Apply the operation to source_buffer, writing the results to target_buffer.

since: 0.4

reset_stats

Resets the cumulative data gathered by the GeglStats object returned by #gegl_stats().

since: 0.4

scratch_alloc

Allocates size bytes of scratch memory.

since: 0.4

scratch_alloc0

Allocates size bytes of scratch memory, initialized to zero.

since: 0.4

scratch_free

Frees the memory pointed to by ptr.

since: 0.4

serialize

since: 0.4

stats

Returns a GeglStats object with properties that can be read to monitor GEGL statistics.

since: 0.4

try_malloc

Allocates n_bytes of memory. If allocation fails, or if n_bytes is 0, returns NULL.

since: 0.4

Function Macros

buffer_get_height

Evaluates to the height of the buffer’s extent.

since: 0.4

buffer_get_pixel_count

Returns the number of pixels of the extent of the buffer.

since: 0.4

buffer_get_width

Evaluates to the width of the buffer’s extent.

since: 0.4

buffer_get_x

Evaluates to the X coordinate of the upper left corner of the buffer’s extent.

since: 0.4

buffer_get_y

Evaluates to the Y coordinate of the upper left corner of the buffer’s extent.

since: 0.4

FLOAT_EQUAL

since: 0.4

sampler_compute_scale

since: 0.4

scratch_new

Allocates n elements of type type using scratch memory. The returned pointer is cast to a pointer to the given type. Care is taken to avoid overflow when calculating the size of the allocated block.

since: 0.4

scratch_new0

Allocates n elements of type type using scratch memory, initialized to 0. The returned pointer is cast to a pointer to the given type. Care is taken to avoid overflow when calculating the size of the allocated block.

since: 0.4

tile_handler_get_source

since: 0.4

tile_handler_source_command

since: 0.4

VALUE_HOLDS_MATRIX3

since: 0.4

Constants

AUTO_ROWSTRIDE

since: 0.4

CH_BACK_CENTER

since: 0.4

CH_BACK_LEFT

since: 0.4

CH_BACK_RIGHT

since: 0.4

CH_FRONT_CENTER

since: 0.4

CH_FRONT_LEFT

since: 0.4

CH_FRONT_LEFT_OF_CENTER

since: 0.4

CH_FRONT_RIGHT

since: 0.4

CH_FRONT_RIGHT_OF_CENTER

since: 0.4

CH_LAYOUT_2_1

since: 0.4

CH_LAYOUT_2_2

since: 0.4

CH_LAYOUT_2POINT1

since: 0.4

CH_LAYOUT_3POINT1

since: 0.4

CH_LAYOUT_4POINT0

since: 0.4

CH_LAYOUT_4POINT1

since: 0.4

CH_LAYOUT_5POINT0

since: 0.4

CH_LAYOUT_5POINT0_BACK

since: 0.4

CH_LAYOUT_5POINT1

since: 0.4

CH_LAYOUT_5POINT1_BACK

since: 0.4

CH_LAYOUT_6POINT0

since: 0.4

CH_LAYOUT_6POINT0_FRONT

since: 0.4

CH_LAYOUT_6POINT1

since: 0.4

CH_LAYOUT_6POINT1_BACK

since: 0.4

CH_LAYOUT_6POINT1_FRONT

since: 0.4

CH_LAYOUT_7POINT0

since: 0.4

CH_LAYOUT_7POINT0_FRONT

since: 0.4

CH_LAYOUT_7POINT1

since: 0.4

CH_LAYOUT_7POINT1_WIDE

since: 0.4

CH_LAYOUT_7POINT1_WIDE_BACK

since: 0.4

CH_LAYOUT_HEXADECAGONAL

since: 0.4

CH_LAYOUT_HEXAGONAL

since: 0.4

CH_LAYOUT_NATIVE

since: 0.4

CH_LAYOUT_OCTAGONAL

since: 0.4

CH_LAYOUT_QUAD

since: 0.4

CH_LAYOUT_STEREO

since: 0.4

CH_LAYOUT_STEREO_DOWNMIX

since: 0.4

CH_LAYOUT_SURROUND

since: 0.4

CH_LOW_FREQUENCY

since: 0.4

CH_LOW_FREQUENCY_2

since: 0.4

CH_SIDE_LEFT

since: 0.4

CH_SIDE_RIGHT

since: 0.4

CH_STEREO_LEFT

since: 0.4

CH_STEREO_RIGHT

since: 0.4

CH_SURROUND_DIRECT_LEFT

since: 0.4

CH_SURROUND_DIRECT_RIGHT

since: 0.4

CH_TOP_BACK_CENTER

since: 0.4

CH_TOP_BACK_LEFT

since: 0.4

CH_TOP_BACK_RIGHT

since: 0.4

CH_TOP_CENTER

since: 0.4

CH_TOP_FRONT_CENTER

since: 0.4

CH_TOP_FRONT_LEFT

since: 0.4

CH_TOP_FRONT_RIGHT

since: 0.4

CH_WIDE_LEFT

since: 0.4

CH_WIDE_RIGHT

since: 0.4

FLOAT_EPSILON

since: 0.4

LOOKUP_MAX_ENTRIES

since: 0.4

MAJOR_VERSION

since: 0.4

MAX_AUDIO_CHANNELS

since: 0.4

MICRO_VERSION

since: 0.4

MINOR_VERSION

since: 0.4

PARAM_NO_VALIDATE

since: 0.4