Structureswift-png 4.4.5PNG
Palette
An image palette.
PNG.Palette.swift:9@frozen struct PaletteThis type models the information stored in a PLTE chunk. This information is used to populate the non-alpha components of the palette field in an image color Format, when appropriate.
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struct MetadataThe metadata in a PNG image.
struct HeaderAn image header.
struct BackgroundA background descriptor.
struct TransparencyA transparency descriptor.
struct ChromaticityA chromaticity descriptor.
struct ColorProfileAn embedded color profile.
enum ColorRenderingA color rendering mode.
struct GammaA gamma descriptor.
struct HistogramA palette frequency histogram.
struct PhysicalDimensionsA physical dimensions descriptor.
struct SignificantBitsA color precision descriptor.
struct SuggestedPaletteA suggested image palette.
struct TextA text comment.
struct TimeModifiedAn image modification time.
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Protocols
protocol BytestreamDestinationA destination bytestream.
protocol BytestreamSourceA source bytestream.
protocol Color<Aggregate>A color target.
protocol ErrorFunctionality common to all library error types.
Types
struct ChunkA chunk type identifier.
struct ContextA decoding context.
enum DecodingErrorA decoding error.
enum FormatA color format.
enum FormattingErrorA formatting error.
struct ImageA rectangular image.
struct LayoutAn image layout.
enum LexingErrorA lexing error.
enum ParsingErrorA parsing error.
struct PercentmilleA rational percentmille value.
struct RGBA<T>An RGBA color target.
enum StandardA PNG standard.
struct VA<T>A grayscale-alpha color target.
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enum BytestreamA namespace for bytestream utilities.
enum DataA namespace containing the
Imagetype.
Type members
static func convolve<A, T, C>([UInt8], dereference: (Int) -> A, kernel: (T) -> C) -> [C] Converts an image data buffer to a pixel array, using the given pixel kernel and dereferencing function.
static func convolve<A, T, C>([UInt8], dereference: (Int) -> (A, A), kernel: ((T, T)) -> C) -> [C] Converts an image data buffer to a pixel array, using the given pixel kernel and dereferencing function.
static func convolve<A, T, C>([UInt8], dereference: (Int) -> (A, A, A), kernel: ((T, T, T)) -> C) -> [C] Converts an image data buffer to a pixel array, using the given pixel kernel and dereferencing function.
static func convolve<A, T, C>([UInt8], dereference: (Int) -> (A, A, A, A), kernel: ((T, T, T, T)) -> C) -> [C] Converts an image data buffer to a pixel array, using the given pixel kernel and dereferencing function.
static func convolve<A, T, C>([UInt8], of: A.Type, depth: Int, kernel: ((T, T, T, T)) -> C) -> [C] Converts an image data buffer to a pixel array, using the given pixel kernel.
static func convolve<A, T, C>([UInt8], of: A.Type, depth: Int, kernel: ((T, T, T), (A, A, A)) -> C) -> [C] Converts an image data buffer to a pixel array, using the given pixel kernel.
static func convolve<A, T, C>([UInt8], of: A.Type, depth: Int, kernel: ((T, T)) -> C) -> [C] Converts an image data buffer to a pixel array, using the given pixel kernel.
static func convolve<A, T, C>([UInt8], of: A.Type, depth: Int, kernel: (T, A) -> C) -> [C] Converts an image data buffer to a pixel array, using the given pixel kernel.
static func deconvolve<A, T, C>([C], as: A.Type, depth: Int, kernel: (C) -> (T, T, T, T)) -> [UInt8] Converts a pixel array to an image data buffer, using the given pixel kernel.
static func deconvolve<A, T, C>([C], as: A.Type, depth: Int, kernel: (C) -> (T, T, T)) -> [UInt8] Converts a pixel array to an image data buffer, using the given pixel kernel.
static func deconvolve<A, T, C>([C], as: A.Type, depth: Int, kernel: (C) -> (T, T)) -> [UInt8] Converts a pixel array to an image data buffer, using the given pixel kernel.
static func deconvolve<A, T, C>([C], as: A.Type, depth: Int, kernel: (C) -> T) -> [UInt8] Converts a pixel array to an image data buffer, using the given pixel kernel.
static func deconvolve<A, T, C>([C], reference: (A) -> Int, kernel: (C) -> T) -> [UInt8] Converts a pixel array to an image data buffer, using the given pixel kernel and referencing function.
static func deconvolve<A, T, C>([C], reference: ((A, A)) -> Int, kernel: (C) -> (T, T)) -> [UInt8] Converts a pixel array to an image data buffer, using the given pixel kernel and referencing function.
static func deconvolve<A, T, C>([C], reference: ((A, A, A)) -> Int, kernel: (C) -> (T, T, T)) -> [UInt8] Converts a pixel array to an image data buffer, using the given pixel kernel and referencing function.
static func deconvolve<A, T, C>([C], reference: ((A, A, A, A)) -> Int, kernel: (C) -> (T, T, T, T)) -> [UInt8] Converts a pixel array to an image data buffer, using the given pixel kernel and referencing function.
static func premultiply<T>(T, alpha: T) -> T Premultiplies a color component with an alpha value.
static func straighten<T>(T, alpha: T) -> T Straightens a premultiplied color component given an alpha value.
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Conformances
protocol SendableA type whose values can safely be passed across concurrency domains by copying.
Type members
init(entries: [(r: UInt8, g: UInt8, b: UInt8)], pixel: PNG.Format.Pixel) Creates an image palette.
init(parsing: [UInt8], pixel: PNG.Format.Pixel) throws Creates an image palette by parsing the given chunk data, interpreting and validating it according to the given
pixelformat.
Instance members
let entries: [(r: UInt8, g: UInt8, b: UInt8)]The entries in this palette.
var serialized: [UInt8]Encodes this image palette as the contents of a
PLTEchunk.