color

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v0.0.0-...-487786b Latest Latest Go to latest Published: Apr 17, 2024 License: BSD-2-Clause Imports: 6 Imported by: 0

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git.gammaspectra.live/S.O.N.G/Ignite

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Documentation ¶

Index ¶

type ChromaSamplePosition
type ChromaSampling
type MatrixCoefficients
type Primary
type Space
- func MustColorFormatFromString(colorFormat string) Space
- func NewColorFormatFromString(colorFormat string) (Space, error)
type Transfer

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type ChromaSamplePosition ¶

type ChromaSamplePosition byte

const (
	ChromaSamplePositionUnspecified ChromaSamplePosition = iota
	ChromaSamplePositionLeft
	ChromaSamplePositionCenter
	ChromaSamplePositionTopLeft
	ChromaSamplePositionTop
	ChromaSamplePositionBottomLeft
	ChromaSamplePositionBottom
	ChromaSamplePositionNB
)

type ChromaSampling ¶

type ChromaSampling struct {
	// J horizontal sampling reference (width of the conceptual region). Usually, 4.
	J byte
	// A number of chrominance samples (Cb, Cr) in the first row of J pixels.
	A byte
	// B number of changes of chrominance samples (Cb, Cr) between first and second row of J pixels. Note that B has to be either zero or equal to A
	B byte
}

ChromaSampling The subsampling scheme is commonly expressed as a three-part ratio J : A : B (e.g. 4:2:2), that describe the number of luminance and chrominance samples in a conceptual region that is J pixels wide and 2 pixels high.

func (ChromaSampling) ElementChromaSamples ¶

func (s ChromaSampling) ElementChromaSamples() int

func (ChromaSampling) ElementPixels ¶

func (s ChromaSampling) ElementPixels() int

ElementPixels returns the number of pixels for a full element

func (ChromaSampling) ElementSamples ¶

func (s ChromaSampling) ElementSamples() int

ElementSamples returns the number of actual samples (total Y, Cb, Cr) for an encoded element

func (ChromaSampling) PlaneCbSamples ¶

func (s ChromaSampling) PlaneCbSamples(width, height int) int

func (ChromaSampling) PlaneCrSamples ¶

func (s ChromaSampling) PlaneCrSamples(width, height int) int

func (ChromaSampling) PlaneLumaSamples ¶

func (s ChromaSampling) PlaneLumaSamples(width, height int) int

type MatrixCoefficients ¶

type MatrixCoefficients int

const (
	MatrixBT709 MatrixCoefficients = iota
	MatrixBT601
	MatrixBT2020NCL
	MatrixBT2020CL
	MatrixSMPTE285
)

type Primary ¶

type Primary int

const (
	PrimaryBT709 Primary = iota
	PrimaryBT601
	PrimaryBT2020
	PrimarySMPTE240
	PrimarySMPTE431
	PrimarySMPTE432
)

type Space ¶

type Space struct {
	ChromaSampling       ChromaSampling
	ChromaSamplePosition ChromaSamplePosition
	BitDepth             byte
}

var (
	Space420    Space = newColorFormatFromStringInternal("420")
	Space422    Space = newColorFormatFromStringInternal("422")
	Space444    Space = newColorFormatFromStringInternal("444")
	Space420P10 Space = newColorFormatFromStringInternal("420p10")
	Space422P10 Space = newColorFormatFromStringInternal("422p10")
	Space444P10 Space = newColorFormatFromStringInternal("444p10")
	Space420P12 Space = newColorFormatFromStringInternal("420p12")
	Space422P12 Space = newColorFormatFromStringInternal("422p12")
	Space444P12 Space = newColorFormatFromStringInternal("444p12")
	Space420P16 Space = newColorFormatFromStringInternal("420p16")
	Space422P16 Space = newColorFormatFromStringInternal("422p16")
	Space444P16 Space = newColorFormatFromStringInternal("444p16")
)

func MustColorFormatFromString ¶

func MustColorFormatFromString(colorFormat string) Space

func NewColorFormatFromString ¶

func NewColorFormatFromString(colorFormat string) (Space, error)

func (Space) FrameSize ¶

func (c Space) FrameSize(width, height int) (int, error)

func (Space) FrameSizePacked ¶

func (c Space) FrameSizePacked(width, height int) (int, error)

func (Space) MarshalJSON ¶

func (c Space) MarshalJSON() ([]byte, error)

func (Space) String ¶

func (c Space) String() string

func (*Space) UnmarshalJSON ¶

func (c *Space) UnmarshalJSON(buf []byte) error

func (*Space) UnmarshalYAML ¶

func (c *Space) UnmarshalYAML(node *yaml.Node) error

type Transfer ¶

type Transfer int

const (
	TransferBT709 Transfer = iota
	TransferBT601
	TransferLINEAR
	TransferSRGB
	TransferBT2020_10bit
	TransferBT2020_12bit
	TransferSMPTE240
	TransferSMPTE431
	TransferSMPTE432
)

Source Files ¶

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