LogicBinaryOp

Overview

Performs logical operations on binary signals

Discussion

This modules performs binary operations on integer input signals. The module has a variable number of input pins and a single output pin. In all cases, all inputs must have the same block size and this equals the block size of the output pin.

The module operates in two fundamentally different modes depending upon the value of the variable oneChannelOutput. If oneChannelOutput==0, then all of the input pins must have the same number of channels. The output pin will then have the same number of channels as the input pins and be formed by applying the binary operation to all the inputs. When this is used, there must be at least 2 input channels If oneChannelOutput==1, then the input pins can each have a different number of channels. The output is then a one channel integer signal that is formed as the binary operation applied over all input channels.

The variable .opType determines the type of binary operation implemented. Possible values are: 0 = AND, 1 = OR, 2 = XOR. The binary operation is applied on a bit-by-bit basis to the 32-bit signals.

When the module is byassed it outputs 0x1 on all samples.

Type Definition

CODE

typedef struct _ModuleLogicBinaryOp
{
    ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
    INT32 opType;                                 // AND=0, OR=1, XOR=2. Selects the type of binary operations that is performed.
    INT32 oneChannelOutput;                       // Boolean value that determines whether all channels are operated on to form a single output.
} ModuleLogicBinaryOpClass;

Variables

Properties

Name	Type	Usage	isHidden	Default value	Range	Units
opType	int	parameter	0	0	0:2
oneChannelOutput	int	const	0	0	0:1:1

Pins

Input Pins

Name: in1

Description: Audio input

Data type: int

Channel range: Unrestricted

Block size range: Unrestricted

Sample rate range: Unrestricted

Complex support: Real

Name: in2

Description: Audio input

Data type: int

Channel range: Unrestricted

Block size range: Unrestricted

Sample rate range: Unrestricted

Complex support: Real

Output Pins

Name: out

Description: Audio output

Data type: int

MATLAB Usage

File Name: logic_binary_op_module.m

CODE

 M=logic_binary_op_module(NAME, NUMIN, ONECHANNELOUTPUT)
 Audio Weaver that performs Boolean binary operations (AND, OR, XOR)
 on one or more integer input pins.  Arguments:
    NAME - name of the module.
    NUMIN - number of input pins
    ONECHANNELOUTPUT - boolean value which determines if multi-channel
         input signals are collapsed to a single output channel.