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/*
* Copyright (C) 2017-2024 Alibaba Group Holding Limited
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/******************************************************************************
* @file drv/fft.h
* @brief Header File for FFT Driver
* @version V1.0
* @date 11. Nov 2020
* @model fft
******************************************************************************/
#ifndef _DRV_FFT_H_
#define _DRV_FFT_H_
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
///< 512-point FFT
CSKY_MCA_FFT_LEN_512 = 0x1,
///< 256-point FFT
CSKY_MCA_FFT_LEN_256 = 0x2,
///< 128-point FFT
CSKY_MCA_FFT_LEN_128 = 0x4,
///< 64-point FFT
CSKY_MCA_FFT_LEN_64 = 0x8,
///< 32-point FFT
CSKY_MCA_FFT_LEN_32 = 0x10,
///< 16-point FFT
CSKY_MCA_FFT_LEN_16 = 0x20,
} csky_mca_fft_len_t;
/* 8-bit fixed-point numeric type in user-defined format */
typedef int8_t fxp8_t;
/* 16-bit fixed-point numeric type in user-defined format */
typedef int16_t fxp16_t;
/* 24-bit fixed-point numeric type in user-defined format */
typedef int32_t fxp24_t;
/* 32-bit fixed-point numeric type in user-defined format */
typedef int32_t fxp32_t;
/* 64-bit fixed-point numeric type in user-defined format */
typedef int64_t fxp64_t;
/* 8-bit fixed-point numeric type in 1.0.7 format */
typedef fxp8_t q7_t;
/* 16-bit fixed-point numeric type in 1.0.15 format */
typedef fxp16_t q15_t;
/* 32-bit fixed-point numeric type in 1.15.16 format */
typedef fxp32_t q16_t;
void csky_mca_rfft_fxp32(csky_mca_fft_len_t fft_len, const fxp32_t *input, size_t input_size, fxp32_t *output);
void csky_mca_cfft_fxp32(csky_mca_fft_len_t fft_len, const fxp32_t *input, fxp32_t *output);
void csky_mca_rifft_fxp32(csky_mca_fft_len_t fft_len, const fxp32_t *input, fxp32_t *output);
void csky_mca_cifft_fxp32(csky_mca_fft_len_t fft_len, const fxp32_t *input, fxp32_t *output);
void csky_mca_power_spectrum_fxp32(csky_mca_fft_len_t fft_len, const fxp32_t *input, size_t input_size, fxp64_t *output);
#ifdef __cplusplus
}
#endif
#endif /* _DRV_FFT_H_ */
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