ScaleToFitTransformation (ExoPlayer library)

java.lang.Object
- com.google.android.exoplayer2.effect.ScaleToFitTransformation

All Implemented Interfaces:

GlEffect, GlMatrixTransformation, MatrixTransformation, Effect
```
public final class ScaleToFitTransformation
extends Object
implements MatrixTransformation
```
Specifies a simple rotation and/or scale to apply in the vertex shader.
All input frames' pixels will be preserved and copied into an output frame, potentially changing the width and height of the frame by scaling dimensions to fit.
The background color of the output frame will be black, with alpha = 0 if applicable.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class ScaleToFitTransformation.Builder
A builder for ScaleToFitTransformation instances.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Pair<Integer,Integer>`	`configure(int inputWidth, int inputHeight)`	Configures the input and output dimensions.
`Matrix`	`getMatrix(long presentationTimeUs)`	Returns the 3x3 transformation `Matrix` to apply to the frame with the given timestamp.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.google.android.exoplayer2.effect.GlMatrixTransformation
toGlTextureProcessor

Methods inherited from interface com.google.android.exoplayer2.effect.MatrixTransformation
getGlMatrixArray

- Method Detail
  - configure
```
public Pair<Integer,Integer> configure(int inputWidth,
                                             int inputHeight)
```
    Description copied from interface: GlMatrixTransformation
    
    Configures the input and output dimensions.
    Must be called before GlMatrixTransformation.getGlMatrixArray(long).
    
    Specified by:
    
    configure in interface GlMatrixTransformation
    
    Parameters:
    
    inputWidth - The input frame width, in pixels.
    
    inputHeight - The input frame height, in pixels.
    
    Returns:
    
    The output frame width and height, in pixels.
  - getMatrix
```
public Matrix getMatrix(long presentationTimeUs)
```
    Description copied from interface: MatrixTransformation
    
    Returns the 3x3 transformation Matrix to apply to the frame with the given timestamp.
    
    Specified by:
    
    getMatrix in interface MatrixTransformation