2022-12-31 14:42:31 +00:00
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/******************************************************************************
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* @brief <EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<EFBFBD>ο<EFBFBD>linux/kfifo)
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*
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* Copyright (c) 2016~2021, <morro_luo@163.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2016-05-30 roger.luo Initial version.
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* 2021-02-05 roger.luo <EFBFBD><EFBFBD><EFBFBD>ӿ<EFBFBD><EFBFBD>пռ<EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD>ӿ<EFBFBD>.
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******************************************************************************/
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#ifndef _RING_BUF_H_
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#define _RING_BUF_H_
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*<2A><><EFBFBD>λ<EFBFBD><CEBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/
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typedef struct {
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unsigned char *buf; /*<2A><><EFBFBD>λ<EFBFBD><CEBB><EFBFBD><EFBFBD><EFBFBD> */
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unsigned int size; /*<2A><><EFBFBD>λ<EFBFBD><CEBB><EFBFBD><EFBFBD><EFBFBD> */
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unsigned int front; /*ͷָ<CDB7><D6B8> */
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unsigned int rear; /*βָ<CEB2><D6B8> */
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}ring_buf_t;
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bool ring_buf_init(ring_buf_t *r,unsigned char *buf,unsigned int size);
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void ring_buf_clr(ring_buf_t *r);
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unsigned int ring_buf_len(ring_buf_t *r);
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unsigned int ring_buf_put(ring_buf_t *r,unsigned char *buf,unsigned int len);
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unsigned int ring_buf_get(ring_buf_t *r,unsigned char *buf,unsigned int len);
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unsigned int ring_buf_free_space(ring_buf_t *r);
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#ifdef __cplusplus
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}
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#endif
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#endif
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