67 lines
2.1 KiB
C
67 lines
2.1 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 All unpublished rights reserved.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 __SPEECH_DC_FILTER_H__
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#define __SPEECH_DC_FILTER_H__
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SPEECH_DC_FILTER_GAIN_Q (10)
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#define SPEECH_DC_FILTER_SET_CHANNEL_NUM (0)
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#define SPEECH_DC_FILTER_SET_DATA_SEPARATION (1)
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typedef struct {
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int32_t bypass;
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float gain;
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} SpeechDcFilterConfig;
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struct SpeechDcFilterState_;
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typedef struct SpeechDcFilterState_ SpeechDcFilterState;
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// Creat a instance from speech_dc_filter module/class
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// Common value include: sample rate, frame size and so on.
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SpeechDcFilterState *speech_dc_filter_create(int32_t sample_rate, const SpeechDcFilterConfig *cfg);
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// Destory a speech dc_filter instance
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int32_t speech_dc_filter_destroy(SpeechDcFilterState *st);
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// Just use modify instance configure
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int32_t speech_dc_filter_set_config(SpeechDcFilterState *st, const SpeechDcFilterConfig *cfg);
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// Get/set some value or enable/disable some function
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int32_t speech_dc_filter_ctl(SpeechDcFilterState *st, int32_t ctl, void *ptr);
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// Process speech stream
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int32_t speech_dc_filter_process(SpeechDcFilterState *st, int16_t *pcm_buf, int32_t pcm_len);
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int32_t speech_dc_filter_process_int24(SpeechDcFilterState *st, int32_t *pcm_buf, int32_t pcm_len);
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// Debug speech_dc_filter instance
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int32_t speech_dc_filter_dump(SpeechDcFilterState *st);
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float speech_dc_filter_get_required_mips(SpeechDcFilterState *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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