OverlayProperties
public
final
class
OverlayProperties
extends Object
implements
Parcelable
java.lang.Object | |
↳ | android.hardware.OverlayProperties |
Provides supported overlay properties of the device.
Hardware overlay is a technique to composite different buffers directly
to the screen using display hardware rather than the GPU.
The system compositor is able to assign any content managed by a
SurfaceControl
onto a hardware overlay if possible.
Applications may be interested in the display hardware capabilities exposed
by this class as a hint to determine if their SurfaceControl
tree is power-efficient and performant.
Summary
Inherited constants |
---|
Fields | |
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public
static
final
Creator<OverlayProperties> |
CREATOR
|
Public methods | |
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int
|
describeContents()
Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. |
boolean
|
isCombinationSupported(int dataspace, int format)
Indicates that hardware composition of a buffer encoded with the provided |
boolean
|
isMixedColorSpacesSupported()
Indicates that hardware composition of two or more overlays with different colorspaces is supported on the device. |
void
|
writeToParcel(Parcel dest, int flags)
Flatten this object in to a Parcel. |
Inherited methods | |
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Fields
Public methods
describeContents
public int describeContents ()
Describe the kinds of special objects contained in this Parcelable
instance's marshaled representation. For example, if the object will
include a file descriptor in the output of writeToParcel(android.os.Parcel, int)
,
the return value of this method must include the
CONTENTS_FILE_DESCRIPTOR
bit.
Returns | |
---|---|
int |
a bitmask indicating the set of special object types marshaled
by this Parcelable object instance.
Value is either 0 or CONTENTS_FILE_DESCRIPTOR |
isCombinationSupported
public boolean isCombinationSupported (int dataspace, int format)
Indicates that hardware composition of a buffer encoded with the provided DataSpace
and ERROR(HardwareBuffer.Format/android.hardware.HardwareBuffer.Format HardwareBuffer.Format)
is supported on the device.
Returns | |
---|---|
boolean |
True if the device can support efficiently compositing the content described by the dataspace and format. False if GPU composition fallback is otherwise required. |
isMixedColorSpacesSupported
public boolean isMixedColorSpacesSupported ()
Indicates that hardware composition of two or more overlays with different colorspaces is supported on the device.
Returns | |
---|---|
boolean |
True if the device can support mixed colorspaces efficiently, false if GPU composition fallback is otherwise required. |
writeToParcel
public void writeToParcel (Parcel dest, int flags)
Flatten this object in to a Parcel.
Parameters | |
---|---|
dest |
Parcel : This value cannot be null . |
flags |
int : Additional flags about how the object should be written.
May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE .
Value is either 0 or a combination of Parcelable.PARCELABLE_WRITE_RETURN_VALUE , and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES |