LanczosResample

Kotlin |Java

@UnstableApi
class LanczosResample : GlEffect

A GlEffect that applies a Lanczos-windowed sinc function when resampling an image. See Filters for Common Resampling Tasks, Ken Turkowski.

The filter rescales images in both dimensions with the same scaling factor.

Summary

Public functions
`java-static LanczosResample!`	`scaleToFit(width: @IntRange(from = 1) Int, height: @IntRange(from = 1) Int)` Creates an instance.
`GlShaderProgram!`	`toGlShaderProgram(context: Context!, useHdr: Boolean)` Returns a `GlShaderProgram` that applies the effect.

Long

getDurationAfterEffectApplied(durationUs: Long)

Returns the expected duration of the output stream when the effect is applied given a input durationUs.

Boolean

isNoOp(inputWidth: Int, inputHeight: Int)

Returns whether a GlEffect applies no change at every timestamp.

java-static fun scaleToFit(width: @IntRange(from = 1) Int, height: @IntRange(from = 1) Int): LanczosResample!

Creates an instance.

Parameters
`width: @IntRange(from = 1) Int`	The width inside which the output contents will fit.
`height: @IntRange(from = 1) Int`	The height inside which the output contents will fit.

fun toGlShaderProgram(context: Context!, useHdr: Boolean): GlShaderProgram!

Returns a GlShaderProgram that applies the effect.

Parameters
`context: Context!`	A `Context`.
`useHdr: Boolean`	Whether input textures come from an HDR source. If `true`, colors will be in linear RGB BT.2020. If `false`, colors will be in linear RGB BT.709.

Throws
`androidx.media3.common.VideoFrameProcessingException`	If an error occurs while creating the .