Developers
Most visited
Recently visited
MediaCodecInfo.VideoCapabilities.PerformancePoint
public
static
final
class
MediaCodecInfo.VideoCapabilities.PerformancePoint
extends Object
| java.lang.Object | |
| ↳ | android.media.MediaCodecInfo.VideoCapabilities.PerformancePoint |
Video performance points are a set of standard performance points defined by number of pixels, pixel rate and frame rate. Performance point represents an upper bound. This means that it covers all performance points with fewer pixels, pixel rate and frame rate.
Summary
Public constructors | |
|---|---|
PerformancePoint(int width, int height, int frameRate)
Create a performance point for a given frame size and frame rate. |
|
Public methods | |
|---|---|
boolean
|
covers(MediaCodecInfo.VideoCapabilities.PerformancePoint other)
Checks whether the performance point covers another performance point. |
boolean
|
covers(MediaFormat format)
Checks whether the performance point covers a media format. |
boolean
|
equals(Object o)
Indicates whether some other object is "equal to" this one. |
int
|
hashCode()
Returns a hash code value for the object. |
String
|
toString()
Convert to a debug string |
Inherited methods | |
|---|---|
Fields
Public constructors
PerformancePoint
public PerformancePoint (int width,
int height,
int frameRate)
Create a performance point for a given frame size and frame rate.
| Parameters | |
|---|---|
width |
int: width of the frame in pixels |
height |
int: height of the frame in pixels |
frameRate |
int: frame rate in frames per second |
Public methods
covers
public boolean covers (MediaCodecInfo.VideoCapabilities.PerformancePoint other)
Checks whether the performance point covers another performance point. Use this method to determine if a performance point advertised by a codec covers the performance point required. This method can also be used for loose ordering as this method is transitive.
| Parameters | |
|---|---|
other |
MediaCodecInfo.VideoCapabilities.PerformancePoint: other performance point considered
This value cannot be null. |
| Returns | |
|---|---|
boolean |
true if the performance point covers the other. |
covers
public boolean covers (MediaFormat format)
Checks whether the performance point covers a media format.
| Parameters | |
|---|---|
format |
MediaFormat: Stream format considered
This value cannot be null. |
| Returns | |
|---|---|
boolean |
true if the performance point covers the format. |
equals
public boolean equals (Object o)
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.
The equals method for class Object implements
the most discriminating possible equivalence relation on objects;
that is, for any non-null reference values x and
y, this method returns true if and only
if x and y refer to the same object
(x == y has the value true).
Note that it is generally necessary to override the hashCode
method whenever this method is overridden, so as to maintain the
general contract for the hashCode method, which states
that equal objects must have equal hash codes.
| Parameters | |
|---|---|
o |
Object: the reference object with which to compare. |
| Returns | |
|---|---|
boolean |
true if this object is the same as the obj
argument; false otherwise. |
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
equals(Object)method, 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
equals(java.lang.Object)method, 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.
As much as is reasonably practical, the hashCode method defined by
class Object does return distinct integers for distinct
objects. (This is typically implemented by converting the internal
address of the object into an integer, but this implementation
technique is not required by the
Java™ programming language.)
| Returns | |
|---|---|
int |
a hash code value for this object. |