Overview

Sets scalar and array values in other modules

Discussion

The Param Set Table V2 module writes the values of one column of a statically defined table to an internal array of another module. A common use case is to update the coefficients of an FIR module based on changing conditions in the system.

The numDim variable determines the dimensions of the table to be stored. The numCols variable determines the number of vectors that can be stored in the internal table. The numRows variable determines the length of each vector.

It is the responsibility of the user to ensure that the numRows variable matches the size of the target module's array. The integer value of the input pin is used to select which column to copy to the target module's array.

The array values are stored in a non-interleaved way, e.g. numDims=2,numRows=3,numCols=4 aaabbb aaabbb aaabbb aaabbb.

If numDim and numRows are all = 1 then the module will assume a scalar value to write.

See the Param Set module documentation for more detail on how to specify the target module's array, and the meaning of each setBehavior type.

For AWE gurus: Functionality in Param Set Table V2 can also be achieved with combining the Array Set and Table Source V2 modules for multi-dim tables or Param Set modules for scalar variables. But Param Set Table V2 adds more convenience, e.g. it supports writing into scalar values (not arrays only), Array Set by itself does not support "OnChangeSet" behavior, hence fewer number of modules in total will be required.

The argument executionOrder determines when the param set table v2 will actually execute in relation to the module it is controlling:

Undefined = Let the build process decide

Before = Set the parameter before the target module executes

After = Set the parameter after the target module executes

This can be confirmed by generating a .AWS file and looking at the order which the modules are added to the layout, which set the execution order.

Type Definition

typedef struct _ModuleParamSetTableV2
{
    ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
    INT32 index;                                  // Current index to table array
    INT32 setBehavior;                            // Controls the behavior of the module
    INT32 numDim;                                 // The number of dimensions of the array
    INT32 numRows;                                // The size of each vector
    INT32 numCols;                                // The number of vectors
    FLOAT32* table;                               // Array table (numDim*numRows, numCols)
    void * modPtr;                                // Points to the module to set
    void * varPtr;                                // Points to the variable to set within the module instance structure
} ModuleParamSetTableV2Class;

Variables

Properties

Pins

Input Pins

Name: in

Description: array index

Data type: int

Channel range: 1

Block size range: Unrestricted

Sample rate range: Unrestricted

Complex support: Real

MATLAB Usage

File Name: param_set_table_v2_module.m

 M=param_set_table_v2_module(NAME, DATATYPE, NUMDIM, NUMROWS, NUMCOLS, MODVAR)
 Param table set module. This module can reach into the instance structure
 of other modules and set array values.  
 Arguments:
    NAME       - name of the module.
    DATATYPE   - string specifying the data type of the variable and this
                 is also used for the data type of the input pin.  Allowable
                 values are'int'.
    NUMDIM     - number of table dimensions
    NUMROWS    - size of one (1-d) table
    NUMCOLS    - number of presets
    MODVAR     - specifies the module and variable name using the form:
                 'MOD.VAR' where MOD is the module name and VAR is the 
                 variable name.  You can also specify internal subsystems using
                 'SUBSYS.MOD.VAR'.