Class NativeImageQueue

Definition

Namespace:
Tizen.NUI
Assembly:
Tizen.NUI.dll

NativeImageQueue is a class for displaying an image resource using queue.

public class NativeImageQueue : NativeImageInterface
Inheritance
object
Disposable
RefObject
NativeImageInterface
NativeImageQueue
Derived
TbmQueueImageSource
TbmQueueImageSource
Examples
NativeImageQueue queue = new NativeImageQueue(width, height, ColorFormat.BGRA8888);
if(queue.CanDequeueBuffer())
{
  var buffer = queue.DequeueBuffer(ref bufferWidth, ref bufferHeight, ref bufferStride);

  /* Use buffer */

  queue.EnqueueBuffer(buffer);
}

ImageUrl imageUrl = queue.GenerateUrl();
ImageView view = new ImageView(imageUrl.ToString());

Constructors

View Source

NativeImageQueue(uint, uint, uint, ColorFormat)

Creates an initialized NativeImageQueue with queue count and size and color format.

Declaration
public NativeImageQueue(uint queueCount, uint width, uint height, NativeImageQueue.ColorFormat colorFormat)
Parameters
Type Name Description
uint queueCount

The number of queue count. Use system default value if it is 0.
uint width

A Width of queue.
uint height

A Height of queue.
NativeImageQueue.ColorFormat colorFormat

A color format of queue.
View Source

NativeImageQueue(uint, uint, ColorFormat)

Creates an initialized NativeImageQueue with size and color format.

Declaration
public NativeImageQueue(uint width, uint height, NativeImageQueue.ColorFormat colorFormat)
Parameters
Type Name Description
uint width

A Width of queue.
uint height

A Height of queue.
NativeImageQueue.ColorFormat colorFormat

A color format of queue.

Methods

View Source

CanDequeueBuffer()

Checks if the buffer can be got from the queue.

Declaration
public bool CanDequeueBuffer()
Returns
Type Description
bool

True if the buffer can be got from the queue.
View Source

DequeueBuffer(ref int, ref int, ref int)

Dequeue buffer from the queue.

Declaration
public IntPtr DequeueBuffer(ref int width, ref int height, ref int stride)
Parameters
Type Name Description
int width

A reference to the buffer's width.
int height

A reference to the buffer's height.
int stride

A reference to the buffer's stride.
Returns
Type Description
IntPtr

A handle of buffer.
View Source

EnqueueBuffer(IntPtr)

Enqueue buffer to the queue.

Declaration
public bool EnqueueBuffer(IntPtr buffer)
Parameters
Type Name Description
IntPtr buffer

A Handle of buffer to be enqueued.
Returns
Type Description
bool

True if success.
View Source

GenerateUrl()

Generate Url from native image queue.

Declaration
public override ImageUrl GenerateUrl()
Returns
Type Description
ImageUrl

The ImageUrl of NativeImageQueue.
Overrides
Remarks

This API should not be called at worker thread.

View Source

GenerateUrl(bool)

Generate Url from native image queue with pre-multiplied by alpha information.

Declaration
public override ImageUrl GenerateUrl(bool preMultiplied)
Parameters
Type Name Description
bool preMultiplied

The raw pixel data pre-multiplied by alpha.
Returns
Type Description
ImageUrl

The ImageUrl of NativeImageQueue.
Overrides
Remarks

This API should not be called at worker thread.

View Source

GetQueueCount()

The number of queue.

Declaration
public uint GetQueueCount()
Returns
Type Description
uint
Remarks

Hidden API: Only for inhouse or developing usage. The behavior and interface can be changed anytime.

View Source

ReleaseSwigCPtr(HandleRef)

Declaration
protected override void ReleaseSwigCPtr(System.Runtime.InteropServices.HandleRef swigCPtr)
Parameters
Type Name Description
System.Runtime.InteropServices.HandleRef swigCPtr
Overrides
Examples
NativeImageQueue queue = new NativeImageQueue(width, height, ColorFormat.BGRA8888);
if(queue.CanDequeueBuffer())
{
  var buffer = queue.DequeueBuffer(ref bufferWidth, ref bufferHeight, ref bufferStride);

  /* Use buffer */

  queue.EnqueueBuffer(buffer);
}

ImageUrl imageUrl = queue.GenerateUrl();
ImageView view = new ImageView(imageUrl.ToString());

Extension Methods