dsps_fft4r.h

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// Copyright 2018-2019 Espressif Systems (Shanghai) PTE LTD
//
// 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.
 
#ifndef _dsps_fft4r_H_
#define _dsps_fft4r_H_
#include "dsp_err.h"
#include "sdkconfig.h"
 
#include "dsps_fft_tables.h"
#include "dsps_fft4r_platform.h"
 
#ifdef __cplusplus
extern "C"
{
#endif
 
extern float *dsps_fft4r_w_table_fc32;
extern int dsps_fft4r_w_table_size;
extern uint8_t dsps_fft4r_initialized;
 
extern int16_t *dsps_fft4r_w_table_sc16;
extern int dsps_fft4r_w_table_sc16_size;
extern uint8_t dsps_fft4r_sc16_initialized;

esp_err_t dsps_fft4r_init_fc32(float *fft_table_buff, int max_fft_size);

void dsps_fft4r_deinit_fc32(void);

esp_err_t dsps_fft4r_fc32_ansi_(float *data, int N, float *table, int table_size);
esp_err_t dsps_fft4r_fc32_ae32_(float *data, int N, float *table, int table_size);
esp_err_t dsps_fft4r_fc32_aes3_(float *data, int N, float *table, int table_size);
esp_err_t dsps_fft4r_fc32_arp4_(float *data, int N, float *table, int table_size);
// This is workaround because linker generates permanent error when assembler uses
// direct access to the table pointer
#define dsps_fft4r_fc32_ansi(data, N) dsps_fft4r_fc32_ansi_(data, N, dsps_fft4r_w_table_fc32, dsps_fft4r_w_table_size)
#define dsps_fft4r_fc32_ae32(data, N) dsps_fft4r_fc32_ae32_(data, N, dsps_fft4r_w_table_fc32, dsps_fft4r_w_table_size)
#define dsps_fft4r_fc32_aes3(data, N) dsps_fft4r_fc32_aes3_(data, N, dsps_fft4r_w_table_fc32, dsps_fft4r_w_table_size)
#define dsps_fft4r_fc32_arp4(data, N) dsps_fft4r_fc32_arp4_(data, N, dsps_fft4r_w_table_fc32, dsps_fft4r_w_table_size/(N))

esp_err_t dsps_bit_rev4r_fc32(float *data, int N);
esp_err_t dsps_bit_rev4r_fc32_ae32(float *data, int N);
esp_err_t dsps_bit_rev4r_direct_fc32_ansi(float *data, int N);
esp_err_t dsps_bit_rev4r_sc16_ansi(int16_t *data, int N);

esp_err_t dsps_cplx2real_fc32_ansi_(float *data, int N, float *table, int table_size);
esp_err_t dsps_cplx2real_fc32_ae32_(float *data, int N, float *table, int table_size);
#define dsps_cplx2real_fc32_ansi(data, N) dsps_cplx2real_fc32_ansi_(data, N, dsps_fft4r_w_table_fc32, dsps_fft4r_w_table_size)
#define dsps_cplx2real_fc32_ae32(data, N) dsps_cplx2real_fc32_ae32_(data, N, dsps_fft4r_w_table_fc32, dsps_fft4r_w_table_size)
 
 
esp_err_t dsps_gen_bitrev4r_table(int N, int step, char *name_ext);
 
#ifdef __cplusplus
}
#endif
 
#if CONFIG_DSP_OPTIMIZED
 
#if (dsps_fft4r_fc32_ae32_enabled == 1)
#define dsps_fft4r_fc32 dsps_fft4r_fc32_ae32
#elif (dsps_fft4r_fc32_aes3_enabled == 1)
#define dsps_fft4r_fc32 dsps_fft4r_fc32_aes3
#elif (dsps_fft4r_fc32_arp4_enabled == 1)
#define dsps_fft4r_fc32 dsps_fft4r_fc32_arp4
#else
#define dsps_fft4r_fc32 dsps_fft4r_fc32_ansi
#endif // dsps_fft4r_fc32_ae32_enabled
 
#define dsps_fft4r_sc16 dsps_fft4r_sc16_ae32
#define dsps_bit_rev4r_fc32 dsps_bit_rev4r_fc32_ae32
 
#if (dsps_cplx2real_fc32_ae32_enabled == 1)
#define dsps_cplx2real_fc32 dsps_cplx2real_fc32_ae32
#else
#define dsps_cplx2real_fc32 dsps_cplx2real_fc32_ansi
#endif // dsps_cplx2real_fc32_ae32_enabled
 
 
#else
#define dsps_fft4r_fc32 dsps_fft4r_fc32_ansi
#define dsps_fft4r_sc16 dsps_fft4r_sc16_ansi
#define dsps_bit_rev4r_fc32 dsps_bit_rev4r_fc32
#define dsps_cplx2real_fc32 dsps_cplx2real_fc32_ansi
#endif
 
#endif // _dsps_fft4r_H_