69 lines
2.3 KiB
C
Executable File
69 lines
2.3 KiB
C
Executable File
/*
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* ESPRESSIF MIT License
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*
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* Copyright (c) 2017 <ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD>
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*
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* Permission is hereby granted for use on ESPRESSIF SYSTEMS ESP8266 only, in which case,
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* it is free of charge, to any person obtaining a copy of this software and associated
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* documentation files (the "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the Software is furnished
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* to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or
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* substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#ifndef _ESPCONN_BUF_H_
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#define _ESPCONN_BUF_H_
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#include "c_types.h"
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typedef struct ringbuf_t {
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uint8_t* buf;
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uint8_t* head, *tail;
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size_t size;
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} ringbuf, *ringbuf_t;
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ringbuf_t ringbuf_new(size_t capacity);
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size_t ringbuf_buffer_size(const struct ringbuf_t* rb);
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void ringbuf_reset(ringbuf_t rb);
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void ringbuf_free(ringbuf_t* rb);
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size_t ringbuf_capacity(const struct ringbuf_t* rb);
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size_t ringbuf_bytes_free(const struct ringbuf_t* rb);
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size_t ringbuf_bytes_used(const struct ringbuf_t* rb);
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int ringbuf_is_full(const struct ringbuf_t* rb);
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int ringbuf_is_empty(const struct ringbuf_t* rb);
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const void* ringbuf_tail(const struct ringbuf_t* rb);
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const void* ringbuf_head(const struct ringbuf_t* rb);
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static uint8_t* ringbuf_nextp(ringbuf_t rb, const uint8_t* p);
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size_t ringbuf_findchr(const struct ringbuf_t* rb, int c, size_t offset);
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size_t ringbuf_memset(ringbuf_t dst, int c, size_t len);
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void* ringbuf_memcpy_into(ringbuf_t dst, const void* src, size_t count);
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void* ringbuf_memcpy_from(void* dst, ringbuf_t src, size_t count);
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#endif /* RINGBUF_H_ */
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