API Reference ExPng v1.0.0
Modules
ExPng is a pure Elixir implementation of the PNG image format.
Struct storage format for any ancillary chunks present in a parsed PNG image
file. Currently ExPng does not make use of these, but saves them in order to
retain the full original state of an image's raw data.
Representation of the IEND final chunk in an encoded PNG image. This is an
empty data chunk, but required for properly decoding an image to mark the end
of the image's data, and serves as a bookend when encoding an ExPng.Image
to PNG.
Stores the data collected from a PNG's header data chunk. This chunk enodes information about
Stores the raw data of an IDAT image data chunk from a PNG image.
Representation of the color palette for a PNG image encoded using the indexed filter method.
Representation of transparency data for an image
Represents a single pixel in an image, storing red, green, blue and alpha values.
Utility module for aliasing various integer constants used by the library
ExPng.Encodeable is a basic behaviour to mark a raw data chunk as encodeable
and provide a callback to convert the struct to a binary bytestring to be
written to a PNG file.
The primary API module for ExPng, ExPng.Image provides functions for
reading, editing, and saving images.
Utility module containing functions necessary for decoding a PNG image file
into an ExPng.Image.
Utility module to hold functions related to drawing on images.
Utility module containing functtions necessary to encode an ExPng.Image
back into a PNG file.
This module contains code for filtering and defiltering lines of bytestring image data
This module contains code for converting between unfiltered bytestrings and
lists of ExPng.Color.t/0.
This struct provides an intermediate data format between a PNG image file and
and ExPng.Image struct. Raw image file data is parsed into this struct
when reading from a PNG file, and when turning an ExPng.Image into a
saveable image file.
Shared utility functions.