OverlaySettings

@UnstableApi
public interface OverlaySettings

Known direct subclasses
StaticOverlaySettings

A statically valued OverlaySettings.

Provides information of how an input texture (for example, a TextureOverlay or in VideoCompositor) is presented.

Summary

Constants
default static final float

The default alpha scale value of the overlay.
default static final Pair<Float, Float>

The default coordinates for the anchor point of the overlay within the background frame.
default static final float

The default luminance multiplier of an SDR overlay when overlaid on a HDR frame.
default static final Pair<Float, Float>

The default coordinates for the anchor point of the overlay frame.
default static final float

The default rotation of the overlay, counter-clockwise.
default static final Pair<Float, Float>

The default scaling of the overlay.

Public methods
default float

Returns the alpha scale value of the overlay, altering its translucency.
default Pair<Float, Float>

Returns the coordinates for the anchor point of the overlay within the background frame.
default float

Returns the luminance multiplier of an SDR overlay when overlaid on a HDR frame.
default Pair<Float, Float>

Returns the coordinates for the anchor point within the overlay.
default float

Returns the rotation of the overlay, counter-clockwise.
default Pair<Float, Float>

Returns the scaling of the overlay.

Constants

DEFAULT_ALPHA_SCALE

default static final float DEFAULT_ALPHA_SCALE = 1.0f

The default alpha scale value of the overlay.

DEFAULT_BACKGROUND_FRAME_ANCHOR

default static final Pair<Float, Float> DEFAULT_BACKGROUND_FRAME_ANCHOR

The default coordinates for the anchor point of the overlay within the background frame.

DEFAULT_HDR_LUMINANCE_MULTIPLIER

default static final float DEFAULT_HDR_LUMINANCE_MULTIPLIER = 1.0f

The default luminance multiplier of an SDR overlay when overlaid on a HDR frame.

DEFAULT_OVERLAY_FRAME_ANCHOR

default static final Pair<Float, Float> DEFAULT_OVERLAY_FRAME_ANCHOR

The default coordinates for the anchor point of the overlay frame.

DEFAULT_ROTATION_DEGREES

default static final float DEFAULT_ROTATION_DEGREES = 0.0f

The default rotation of the overlay, counter-clockwise.

DEFAULT_SCALE

default static final Pair<Float, Float> DEFAULT_SCALE

The default scaling of the overlay.

Public methods

getAlphaScale

default float getAlphaScale()

Returns the alpha scale value of the overlay, altering its translucency.

An alphaScale value of 1 means no change is applied. A value below 1 increases translucency, and a value above 1 reduces translucency.

The default value is DEFAULT_ALPHA_SCALE.

getBackgroundFrameAnchor

default Pair<Float, Float> getBackgroundFrameAnchor()

Returns the coordinates for the anchor point of the overlay within the background frame.

The coordinates are specified in Normalised Device Coordinates (NDCs) relative to the background frame. The ranges for x and y are from -1 to 1. The default value is (0,0), the center of the background frame.

The overlay's anchor point will be positioned at the anchor point returned from this method. For example, a value of (1,1) will move the overlay's anchor to the top right corner. That is, if the overlay's anchor is at (1,1) (the top right corner), the overlay's top right corner will be aligned with that of the background frame; whereas if the overlay's anchor is at (0,0) (the center), the overlay's center will be positioned at the top right corner of the background frame.

The default value is DEFAULT_BACKGROUND_FRAME_ANCHOR.

getHdrLuminanceMultiplier

default float getHdrLuminanceMultiplier()

Returns the luminance multiplier of an SDR overlay when overlaid on a HDR frame.

Scales the luminance of the overlay to adjust the output brightness of the overlay on the frame. The default value is 1, which scales the overlay colors into the standard HDR luminance within the processing pipeline. Use 0.5 to scale the luminance of the overlay to SDR range, so that no extra luminance is added.

Currently only supported on text overlays

The default value is DEFAULT_HDR_LUMINANCE_MULTIPLIER.

getOverlayFrameAnchor

default Pair<Float, Float> getOverlayFrameAnchor()

Returns the coordinates for the anchor point within the overlay.

The anchor point is the point inside the overlay that is placed on the background frame anchor

The coordinates are specified in Normalised Device Coordinates (NDCs) relative to the overlay. The ranges for x and y are from -1 to 1. The default value is (0,0), the center of the overlay.

See getBackgroundFrameAnchor for examples of how to position an overlay.

The default value is DEFAULT_OVERLAY_FRAME_ANCHOR.

getRotationDegrees

default float getRotationDegrees()

Returns the rotation of the overlay, counter-clockwise.

The overlay is rotated at the center of its frame.

The default value is DEFAULT_ROTATION_DEGREES.

getScale

default Pair<Float, Float> getScale()

Returns the scaling of the overlay.

The default value is DEFAULT_SCALE.