73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
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// _____________
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// _________________
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// _____/~\___________/\_
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// ______/\_/\_________/\____
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// ______/\___/\_______/\______
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// _____/\_____/\_____/\_______
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// ____/\_______/\___/\________
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// __/\_________/\_/\________
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// /\___________/~\_______
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// ___________________
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// _____________
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//
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//***************************************************************************//
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//* *//
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//* Project : Neural Audio *//
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//* File : Delay.h *//
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//* Description : Fixed delay *//
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//* Author(s) : Jeff Thompson *//
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//* *//
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//* Copyright (c) Neural Audio Corp. 2008 *//
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//* *//
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//***************************************************************************//
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#include "Neural_THX_Encoders.h"
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#include <stdlib.h>
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//***************************************************************************//
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//* Delay_INIT(...) *//
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//***************************************************************************//
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int Delay_INIT(unsigned int DelayAmount,
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Delay_Struct * pPtr)
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{
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int n;
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if(DelayAmount != NEURAL_FRAMESIZE) return UNSUPPORTED_FRAMESIZE;
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pPtr->Pntr = 0;
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pPtr->DelayAmount = DelayAmount;
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for(n = 0; n < NEURAL_FRAMESIZE+1; n++){
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pPtr->Buffer[n] = 0;
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}
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return NRLSUR_OK;
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}
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//***************************************************************************//
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//* Delay(...) *//
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//***************************************************************************//
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int Delay(float * PtrIn,
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float * PtrOut,
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unsigned int Framesize,
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Delay_Struct * pPtr)
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{
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int n, Pntr, DelayAmount;
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float * Buffer;
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if(Framesize != NEURAL_FRAMESIZE) return UNSUPPORTED_FRAMESIZE;
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Buffer = pPtr->Buffer;
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Pntr = pPtr->Pntr;
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DelayAmount = pPtr->DelayAmount;
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for(n = 0; n < NEURAL_FRAMESIZE; n++){
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Buffer[Pntr] = PtrIn[n];
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Pntr = ( (Pntr+1) >= (DelayAmount+1) ) ? 0 : (Pntr+1);
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PtrOut[n] = Buffer[Pntr];
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}
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pPtr->Pntr = Pntr;
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return NRLSUR_OK;
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}
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