76 lines
2.4 KiB
C
76 lines
2.4 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 All unpublished rights reserved.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 __BT_SCO_CHAIN_H__
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#define __BT_SCO_CHAIN_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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/*
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* Init speech algorithm, init all related states and memory
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* Input:
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* tx_sample_rate: capture sample rate
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* rx_sample_rate: playback sample rate
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* tx_frame_ms: capture frame size in ms
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* rx_frame_ms: playback frame size in ms
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* sco_frame_ms: sco frame size in ms(must be multiply of 7.5)
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* buf: buffer to be used for algorithms
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* len: buffer size
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*/
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int speech_init(int tx_sample_rate, int rx_sample_rate,
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int tx_frame_ms, int rx_frame_ms,
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int sco_frame_ms,
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uint8_t *buf, int len);
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/*
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* Deinit speech algorithm, free all related states and memory
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*/
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int speech_deinit(void);
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/*
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* Uplink process
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* Input:
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* pcm_buf: captured buffer by microphone, multi-channel is interleaved.
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* ref_buf: reference buffer for acoustic echo canceller.
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* buffee sample num should be tx_sample_rate * tx_frame_ms
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* pcm_len: capture buffer sample num, should be tx_sample_rate * sco_frame_ms * ch_num
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* Output:
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* pcm_buf: output buffer of speech algorithm, should be single channel
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* pcm_len: output buffer sample num, should be tx_sample_rate * sco_frame_ms
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*/
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int speech_tx_process(void *pcm_buf, void *ref_buf, int *pcm_len);
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/*
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* Downlink process
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* Input:
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* pcm_buf: input buffer to be processed
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* pcm_len: input buffer sample num, should be rx_sample_rate * sco_frame_ms
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* Output:
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* pcm_buf: output buffer
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* pcm_len: output buffer sample num, should be rx_sample_rate * sco_frame_ms
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*/
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int speech_rx_process(void *pcm_buf, int *pcm_len);
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void *speech_get_ext_buff(int size);
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#ifdef __cplusplus
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}
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#endif
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#endif
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