//#############################################################################
//
// FILE:   filter_so.c
//
// TITLE:  C28x InstaSPIN filter library, second-order
//
//#############################################################################
// $Copyright:
// Copyright (C) 2017-2023 Texas Instruments Incorporated - http://www.ti.com/
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// $
//#############################################################################

#include "filter_so.h"

//*****************************************************************************
//
// FILTER_SO_getDenCoeffs
//
//*****************************************************************************
void
FILTER_SO_getDenCoeffs(FILTER_SO_Handle handle, float32_t *pa1, float32_t *pa2)
{
    FILTER_SO_Obj *obj = (FILTER_SO_Obj *)handle;

    *pa1 = obj->a1;
    *pa2 = obj->a2;

    return;
} // end of FILTER_SO_getDenCoeffs() function

//*****************************************************************************
//
// FILTER_SO_getInitialConditions
//
//*****************************************************************************
void
FILTER_SO_getInitialConditions(FILTER_SO_Handle handle, float32_t *px1,
                               float32_t *px2, float32_t *py1, float32_t *py2)
{
    FILTER_SO_Obj *obj = (FILTER_SO_Obj *)handle;

    *px1 = obj->x1;
    *px2 = obj->x2;

    *py1 = obj->y1;
    *py2 = obj->y2;

    return;
} // end of FILTER_SO_getInitialConditions() function

//*****************************************************************************
//
// FILTER_SO_getNumCoeffs
//
//*****************************************************************************
void
FILTER_SO_getNumCoeffs(FILTER_SO_Handle handle, float32_t *pb0, float32_t *pb1,
                       float32_t *pb2)
{
    FILTER_SO_Obj *obj = (FILTER_SO_Obj *)handle;

    *pb0 = obj->b0;
    *pb1 = obj->b1;
    *pb2 = obj->b2;

    return;
} // end of FILTER_SO_getNumCoeffs() function

//*****************************************************************************
//
// FILTER_SO_init
//
//*****************************************************************************
FILTER_SO_Handle
FILTER_SO_init(void *pMemory, const size_t numBytes)
{
    FILTER_SO_Handle handle;

    if((int16_t)numBytes < (int16_t)sizeof(FILTER_SO_Obj))
    {
        return((FILTER_SO_Handle)NULL);
    }
    //
    // Assign the handle
    //
    handle = (FILTER_SO_Handle)pMemory;

    return(handle);
} // end of FILTER_SO_init() function

//*****************************************************************************
//
// FILTER_SO_setDenCoeffs
//
//*****************************************************************************
void
FILTER_SO_setDenCoeffs(FILTER_SO_Handle handle, const float32_t a1,
                       const float32_t a2)
{
    FILTER_SO_Obj *obj = (FILTER_SO_Obj *)handle;

    obj->a1 = a1;
    obj->a2 = a2;

    return;
} // end of FILTER_SO_setDenCoeffs() function

//*****************************************************************************
//
// FILTER_SO_setInitialConditions
//
//*****************************************************************************
void
FILTER_SO_setInitialConditions(FILTER_SO_Handle handle, const float32_t x1,
                               const float32_t x2, const float32_t y1,
                               const float32_t y2)
{
    FILTER_SO_Obj *obj = (FILTER_SO_Obj *)handle;

    obj->x1 = x1;
    obj->x2 = x2;

    obj->y1 = y1;
    obj->y2 = y2;

    return;
} // end of FILTER_SO_setInitialConditions() function

//*****************************************************************************
//
// FILTER_SO_setNumCoeffs
//
//*****************************************************************************
void
FILTER_SO_setNumCoeffs(FILTER_SO_Handle handle, const float32_t b0,
                       const float32_t b1, const float32_t b2)
{
    FILTER_SO_Obj *obj = (FILTER_SO_Obj *)handle;

    obj->b0 = b0;
    obj->b1 = b1;
    obj->b2 = b2;

    return;
} // end of FILTER_SO_setNumCoeffs() function

// end of file
