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(8.D.2.5) ParamSetTableV2

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

Name

Type

Usage

isHidden

Default value

Range

Units

index

int

parameter

0

-1

Unrestricted

 

setBehavior

int

parameter

0

3

Unrestricted

 

numDim

int

const

0

1

Unrestricted

 

numRows

int

const

0

2

Unrestricted

 

numCols

int

const

0

5

Unrestricted

 

table

float*

parameter

0

[2 x 5]

Unrestricted

 

modPtr

void *

parameter

1

 

Unrestricted

 

varPtr

void *

parameter

1

 

Unrestricted

 

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'. EXECUTIONORDER - Determines when the ParamSet module executes relative to the module it is controlling. Allowable values are: 'undefined' - the default. The execution order is set by the routing algorithm and can occur before or after the module it is controlling. 'before' - forces ParamSet to execute before the module it is controlling. 'after' - forces ParamSet to execute after the module it is controlling. When using 'before' and 'after' you could get a build error indicating that no more modules can execute or there is a circular dependency.

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