LutProperties
public
final
class
LutProperties
extends Object
| java.lang.Object | |
| ↳ | android.hardware.LutProperties |
Provides Lut properties of the device.
A Lut (Look-Up Table) is a pre-calculated table for color correction.
Applications may be interested in the Lut properties exposed by
this class to determine if the Lut(s) they select using
SurfaceControl.Transaction.setLuts(SurfaceControl, DisplayLuts) are by the HWC.
Summary
Constants | |
|---|---|
int |
ONE_DIMENSION
The Lut is one dimensional |
int |
SAMPLING_KEY_CIE_Y
use y of CIE XYZ as the gain value of a lut |
int |
SAMPLING_KEY_MAX_RGB
use max of r,g,b channel as the gain value of a Lut |
int |
SAMPLING_KEY_RGB
use r,g,b channel as the gain value of a Lut |
int |
THREE_DIMENSION
The Lut is three dimensional |
Public methods | |
|---|---|
boolean
|
equals(Object obj)
Indicates whether some other object is "equal to" this one. |
int
|
getDimension()
|
int[]
|
getSamplingKeys()
|
int
|
getSize()
|
int
|
hashCode()
Returns a hash code value for the object. |
String
|
toString()
Returns a string representation of the object. |
Inherited methods | |
|---|---|
Constants
ONE_DIMENSION
public static final int ONE_DIMENSION
The Lut is one dimensional
Constant Value: 1 (0x00000001)
SAMPLING_KEY_CIE_Y
public static final int SAMPLING_KEY_CIE_Y
use y of CIE XYZ as the gain value of a lut
Constant Value: 2 (0x00000002)
SAMPLING_KEY_MAX_RGB
public static final int SAMPLING_KEY_MAX_RGB
use max of r,g,b channel as the gain value of a Lut
Constant Value: 1 (0x00000001)
SAMPLING_KEY_RGB
public static final int SAMPLING_KEY_RGB
use r,g,b channel as the gain value of a Lut
Constant Value: 0 (0x00000000)
THREE_DIMENSION
public static final int THREE_DIMENSION
The Lut is three dimensional
Constant Value: 3 (0x00000003)
Public methods
equals
public boolean equals (Object obj)
Indicates whether some other object is "equal to" this one.
The equals method implements an equivalence relation
on non-null object references:
- It is reflexive: for any non-null reference value
x,x.equals(x)should returntrue. - It is symmetric: for any non-null reference values
xandy,x.equals(y)should returntrueif and only ify.equals(x)returnstrue. - It is transitive: for any non-null reference values
x,y, andz, ifx.equals(y)returnstrueandy.equals(z)returnstrue, thenx.equals(z)should returntrue. - It is consistent: for any non-null reference values
xandy, multiple invocations ofx.equals(y)consistently returntrueor consistently returnfalse, provided no information used inequalscomparisons on the objects is modified. - For any non-null reference value
x,x.equals(null)should returnfalse.
An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.
| Parameters | |
|---|---|
obj |
Object: the reference object with which to compare. |
| Returns | |
|---|---|
boolean |
true if this object is the same as the obj
argument; false otherwise. |
getDimension
public int getDimension ()
| Returns | |
|---|---|
int |
Value is one of the following: |
getSamplingKeys
public int[] getSamplingKeys ()
| Returns | |
|---|---|
int[] |
the list of sampling keys.
This value cannot be null.
Value is one of the following: |
getSize
public int getSize ()
| Returns | |
|---|---|
int |
the size of the Lut for each dimension |
hashCode
public int hashCode ()
Returns a hash code value for the object. This method is
supported for the benefit of hash tables such as those provided by
HashMap.
The general contract of hashCode is:
- Whenever it is invoked on the same object more than once during
an execution of a Java application, the
hashCodemethod must consistently return the same integer, provided no information used inequalscomparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. - If two objects are equal according to the
equalsmethod, then calling thehashCodemethod on each of the two objects must produce the same integer result. - It is not required that if two objects are unequal
according to the
equalsmethod, then calling thehashCodemethod on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
| Returns | |
|---|---|
int |
a hash code value for this object. |
toString
public String toString ()
Returns a string representation of the object.
| Returns | |
|---|---|
String |
a string representation of the object. |