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

*

* Copyright(c) 2022 Intel Corporation. All rights reserved.

*

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

*/

/* Matrix calculation related functions */

#ifndef __SOF_MATH_DCT_H__

#define __SOF_MATH_DCT_H__

#include <sof/math/matrix.h>

#include <stdint.h>

#include <string.h>

#define DCT_MATRIX_SIZE_MAX 42 /* Max matrix size where cos() argument fits Q7.24 */

enum dct_type {

DCT_I = 0,

DCT_II,

};

struct dct_plan_16 {

struct mat_matrix_16b *matrix;

int num_in;

int num_out;

enum dct_type type;

bool ortho;

};

int dct_initialize_16(struct dct_plan_16 *dct);

#endif /* __SOF_MATH_DCT_H__ */