87 lines
2.0 KiB
C
87 lines
2.0 KiB
C
/***************************************************************************
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*
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* Copyright 2015-2019 BES.
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* All rights reserved. All unpublished rights reserved.
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*
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* No part of this work may be used or reproduced in any form or by any
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* means, or stored in a database or retrieval system, without prior written
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* permission of BES.
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*
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* Use of this work is governed by a license granted by BES.
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* This work contains confidential and proprietary information of
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* BES. which is protected by copyright, trade secret,
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* trademark and other intellectual property rights.
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*
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****************************************************************************/
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#ifndef __IIR_PROCESS_H__
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#define __IIR_PROCESS_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "stdint.h"
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#include "hal_aud.h"
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#ifdef USB_EQ_TUNING
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#ifdef __SW_IIR_EQ_PROCESS__
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#define SW_IIR_PARAM_NUM (2)
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#else
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#define SW_IIR_PARAM_NUM (0)
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#endif
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#ifdef __HW_DAC_IIR_EQ_PROCESS__
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#define HW_DAC_IIR_PARAM_NUM (8)
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#else
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#define HW_DAC_IIR_PARAM_NUM (0)
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#endif
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#define IIR_PARAM_NUM (SW_IIR_PARAM_NUM + HW_DAC_IIR_PARAM_NUM)
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#else
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#define IIR_PARAM_NUM (20)
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#endif
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typedef enum {
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IIR_TYPE_LOW_SHELF = 0,
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IIR_TYPE_PEAK,
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IIR_TYPE_HIGH_SHELF,
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IIR_TYPE_LOW_PASS,
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IIR_TYPE_HIGH_PASS,
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IIR_TYPE_NUM
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} IIR_TYPE_T;
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typedef struct {
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IIR_TYPE_T type;
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float gain;
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float fc;
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float Q;
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} IIR_PARAM_T;
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typedef struct {
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float gain0;
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float gain1;
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int num;
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IIR_PARAM_T param[IIR_PARAM_NUM];
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} IIR_CFG_T;
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int iir_open(enum AUD_SAMPRATE_T sample_rate, enum AUD_BITS_T sample_bits,enum AUD_CHANNEL_NUM_T ch_num);
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int iir_set_cfg(const IIR_CFG_T *cfg);
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int iir_set_cfg_ch(const IIR_CFG_T *cfg, enum AUD_CHANNEL_NUM_T ch);
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int iir_run(uint8_t *buf, uint32_t len);
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int iir_close(void);
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int iir_set_gain_and_num(float gain0, float gain1, int num);
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int iir_set_param(uint8_t index, const IIR_PARAM_T *param);
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void iir_update_cfg_tbl(uint8_t *buf, uint32_t len);
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#ifdef __cplusplus
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}
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#endif
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#endif
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