/* SPDX-License-Identifier: BSD-3-Clause

*

* Copyright(c) 2017 Intel Corporation. All rights reserved.

*

* Author: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>

*/

#ifndef __SOF_MATH_FIR_HIFI3_H__

#define __SOF_MATH_FIR_HIFI3_H__

#include <sof/math/fir_config.h>

#if FIR_HIFI3

#include <sof/audio/audio_stream.h>

#include <sof/audio/buffer.h>

#include <user/fir.h>

#include <xtensa/config/defs.h>

#include <xtensa/tie/xt_hifi3.h>

struct sof_eq_fir_coef_data;

struct fir_state_32x16 {

ae_int32 *rwp; /* Circular read and write pointer */

ae_int32 *delay; /* Pointer to FIR delay line */

ae_int32 *delay_end; /* Pointer to FIR delay line end */

ae_f16x4 *coef; /* Pointer to FIR coefficients */

int taps; /* Number of FIR taps */

int length; /* Number of FIR taps plus input length (even) */

int in_shift; /* Amount of right shifts at input */

int out_shift; /* Amount of right shifts at output */

};

void fir_reset(struct fir_state_32x16 *fir);

int fir_delay_size(struct sof_fir_coef_data *config);

int fir_init_coef(struct fir_state_32x16 *fir,

struct sof_fir_coef_data *config);

void fir_init_delay(struct fir_state_32x16 *fir, int32_t **data);

/* Setup circular buffer for FIR input data delay */

static inline void fir_core_setup_circular(struct fir_state_32x16 *fir)

{

AE_SETCBEGIN0(fir->delay);

AE_SETCEND0(fir->delay_end);

}

/* Setup circular for component buffer */

static inline void fir_comp_setup_circular(const struct audio_stream *buffer)

{

AE_SETCBEGIN0(audio_stream_get_addr(buffer));

AE_SETCEND0(audio_stream_get_end_addr(buffer));

}

void fir_get_lrshifts(struct fir_state_32x16 *fir, int *lshift,

int *rshift);

void fir_32x16_hifi3(struct fir_state_32x16 *fir, ae_int32 x, ae_int32 *y,

int shift);

void fir_32x16_2x_hifi3(struct fir_state_32x16 *fir, ae_int32 x0, ae_int32 x1,

ae_int32 *y0, ae_int32 *y1, int shift);

#endif

#endif /* __SOF_MATH_FIR_HIFI3_H__ */