Contrast (ExoPlayer library)

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

All Implemented Interfaces:

GlEffect, Effect
```
public class Contrast
extends Object
implements GlEffect
```
A GlEffect to control the contrast of video frames.

Field Summary

Fields
Modifier and Type Field Description

float contrast
Adjusts the contrast of video frames in the interval [-1, 1].

Constructor Summary

Constructors
Constructor Description

Contrast(float contrast)
Creates a new instance for the given contrast value.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`SingleFrameGlTextureProcessor`	`toGlTextureProcessor(Context context, boolean useHdr)`	Returns a `SingleFrameGlTextureProcessor` that applies the effect.

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

- Field Detail
  - contrast
```
public final float contrast
```
    Adjusts the contrast of video frames in the interval [-1, 1].
- Constructor Detail
  - Contrast
```
public Contrast(float contrast)
```
    Creates a new instance for the given contrast value.
    Contrast values range from -1 (all gray pixels) to 1 (maximum difference of colors). 0 means to add no contrast and leaves the frames unchanged.
- Method Detail
  - toGlTextureProcessor
```
public SingleFrameGlTextureProcessor toGlTextureProcessor(Context context,
                                                          boolean useHdr)
                                                   throws FrameProcessingException
```
    Description copied from interface: GlEffect
    
    Returns a SingleFrameGlTextureProcessor that applies the effect.
    
    Specified by:
    
    toGlTextureProcessor in interface GlEffect
    
    Parameters:
    
    context - A Context.
    
    useHdr - 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:
    
    FrameProcessingException