getNextCodeBlock Method (ROIScaler)

In This Topic

This function gets a datablk from the entropy coder. The sample sin the block, which consists of the quantized coefficients from the quantizer, are scaled by the values given for any ROIs specified.

The function calls on a ROIMaskGenerator to get the mask for scaling the coefficients in the current block.

The data returned by this method is a copy of the orignal data. Therfore it can be modified "in place" without any problems after being returned. The 'offset' of the returned data is 0, and the 'scanw' is the same as the code-block width. See the 'CBlkWTData' class.

Syntax

Visual Basic
C#

'Declaration
 
Public Overridable Function getNextCodeBlock( _
   ByVal c As Integer, _
   ByVal cblk As CBlkWTData _
) As CBlkWTData

public virtual CBlkWTData getNextCodeBlock( 
   int c,
   CBlkWTData cblk
)

Parameters

c: The component for which to return the next code-block.
cblk: If non-null this object will be used to return the new code-block. If null a new one will be allocated and returned. If the "data" array of the object is non-null it will be reused, if possible, to return the data.

Return Value

The next code-block in the current tile for component 'n', or null if all code-blocks for the current tile have been returned.

Reference

ROIScaler Class
ROIScaler Members