SpeedChangeEffect

Kotlin |Java

@UnstableApi
class SpeedChangeEffect : GlEffect

Applies a speed change by updating the frame timestamps.

This effect doesn't drop any frames.

This effect is not supported for effects previewing.

Summary

Public constructors
`SpeedChangeEffect(speed: @FloatRange(from = 0, fromInclusive = false) Float)` Creates an instance that applies the same `speed` change to all the timestamps.
`SpeedChangeEffect(speedProvider: SpeedProvider!)` Creates an instance.

Public functions
`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.
`GlShaderProgram!`	`toGlShaderProgram(context: Context!, useHdr: Boolean)` Returns a `GlShaderProgram` that applies the effect.

SpeedChangeEffect(speed: @FloatRange(from = 0, fromInclusive = false) Float)

Creates an instance that applies the same speed change to all the timestamps.

SpeedChangeEffect(speedProvider: SpeedProvider!)

Creates an instance.

Parameters
`speedProvider: SpeedProvider!`	The `SpeedProvider` specifying the speed changes. Applied on each stream assuming the first frame timestamp of the input media is 0.

fun getDurationAfterEffectApplied(durationUs: Long): Long

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

fun isNoOp(inputWidth: Int, inputHeight: Int): Boolean

Returns whether a GlEffect applies no change at every timestamp.

This can be used as a hint to skip this instance.

Parameters
`inputWidth: Int`	The input frame width, in pixels.
`inputHeight: Int`	The input frame height, in pixels.

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 `GlShaderProgram`.