swscale

Documentation

Overview

Package swscale provides an interface to the libswscale library to scale YUV images.

Index

• func Scale(src *jpeg.YUVImage, opts ScaleOptions) (*jpeg.YUVImage, error)
• type Filter
• type ScaleOptions

Functions

func Scale

func Scale(src *jpeg.YUVImage, opts ScaleOptions) (*jpeg.YUVImage, error)

Scale a YUVImage and return the new YUVImage

Types

type Filter

type Filter int

Filter identifies which scaling (interpolation) filter to use

const (
	FastBilinear Filter = C.SWS_FAST_BILINEAR
	Bilinear     Filter = C.SWS_BILINEAR
	Bicubic      Filter = C.SWS_BICUBIC
	X            Filter = C.SWS_X
	Point        Filter = C.SWS_POINT
	Area         Filter = C.SWS_AREA
	Bicublin     Filter = C.SWS_BICUBLIN
	Gauss        Filter = C.SWS_GAUSS
	Sinc         Filter = C.SWS_SINC
	Lanczos      Filter = C.SWS_LANCZOS
	Spline       Filter = C.SWS_SPLINE
)

Supported scaling filters

type ScaleOptions

type ScaleOptions struct {
	DstWidth, DstHeight int    // Target dimensions
	Filter              Filter // Filter type
}

ScaleOptions contains scaling parameters