55 lines
1.5 KiB
C
55 lines
1.5 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 All unpublished rights reserved.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 IIR_RESAMPLE_H
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#define IIR_RESAMPLE_H
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#include <stdint.h>
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enum IIR_RESAMPLE_MODE
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{
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IIR_RESAMPLE_MODE_1TO2 = 0,
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IIR_RESAMPLE_MODE_1TO3,
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IIR_RESAMPLE_MODE_1TO6,
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IIR_RESAMPLE_MODE_2TO1,
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IIR_RESAMPLE_MODE_3TO1,
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IIR_RESAMPLE_MODE_6TO1,
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IIR_RESAMPLE_MODE_NUM,
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};
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struct IirResampleState_;
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typedef struct IirResampleState_ IirResampleState;
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#ifdef __cplusplus
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extern "C" {
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#endif
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IirResampleState *iir_resample_init(int frame_size, enum IIR_RESAMPLE_MODE mode);
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void iir_resample_destroy(IirResampleState *st);
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int iir_resample_needed_out_count(IirResampleState *st, int in_size);
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// frame_size is input buffer frame_size
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void iir_resample_process(IirResampleState *st, int16_t *in, int16_t *out, int in_size);
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enum IIR_RESAMPLE_MODE iir_resample_choose_mode(int sr_in, int sr_out);
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#ifdef __cplusplus
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}
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#endif
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#endif
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