84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
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/***************************************************************************
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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 All unpublished rights reserved.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 SPEECH_EQ_H
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#define SPEECH_EQ_H
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#include "iirfilt.h"
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// use more frame_size * sizeof(float) ram
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#ifdef __arm__
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#define EQ_USE_CMSIS_IIR
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#endif
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#define MAX_VQE_EQ_BAND 6
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typedef struct
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{
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enum IIR_BIQUARD_TYPE type;
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union
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{
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/* Raw config, used when type is IIR_BIQUARD_RAW */
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struct
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{
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float a1; float a2; float b0; float b1; float b2;
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} raw;
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/* Generate coeffs using user defined params, used in other type */
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struct
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{
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float f0; float gain; float q;
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} design;
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};
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} BiquardParam;
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typedef struct
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{
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int32_t bypass;
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float gain;
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int32_t num;
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BiquardParam params[MAX_VQE_EQ_BAND];
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} EqConfig;
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typedef struct EqState_ EqState;
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#ifdef __cplusplus
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extern "C" {
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#endif
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EqState *eq_init(int32_t sample_rate, int32_t frame_size, const EqConfig *cfg);
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int32_t eq_destroy(EqState *st);
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int32_t eq_set_config(EqState *st, const EqConfig *cfg);
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int32_t eq_process(EqState *st, int16_t *pcm_buf, int32_t pcm_len);
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int32_t eq_process_int24(EqState *st, int32_t *pcm_buf, int32_t pcm_len);
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int32_t eq_process_float(EqState *st, float *pcm_buf, int32_t pcm_len);
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int32_t eq_process2(EqState *st, int16_t *pcm_buf, int32_t pcm_len, int32_t stride);
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int32_t eq_process2_int24(EqState *st, int32_t *pcm_buf, int32_t pcm_len, int32_t stride);
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int32_t eq_process2_float(EqState *st, float *pcm_buf, int32_t pcm_len, int32_t stride);
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float eq_get_required_mips(EqState *st);
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#ifdef __cplusplus
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}
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#endif
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#endif
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