WatermelonModders
68 lines
2.5 KiB
C
68 lines
2.5 KiB
C
/**
|
|
* Copyright 2011 Bump Technologies, Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification, are
|
|
* permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this list of
|
|
* conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
|
|
* of conditions and the following disclaimer in the documentation and/or other materials
|
|
* provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY BUMP TECHNOLOGIES, INC. ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BUMP TECHNOLOGIES, INC. OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
|
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
|
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* The views and conclusions contained in the software and documentation are those of the
|
|
* authors and should not be interpreted as representing official policies, either expressed
|
|
* or implied, of Bump Technologies, Inc.
|
|
*
|
|
**/
|
|
|
|
#ifndef RINGBUFFER_H
|
|
#define RINGBUFFER_H
|
|
|
|
#include <stddef.h>
|
|
|
|
/* Tweak these for potential memory/throughput tradeoffs */
|
|
#define RING_SLOTS 3
|
|
#define RING_DATA_LEN 1024 * 32
|
|
|
|
typedef struct bufent {
|
|
char data[RING_DATA_LEN];
|
|
char *ptr;
|
|
size_t left;
|
|
struct bufent *next;
|
|
} bufent;
|
|
|
|
typedef struct ringbuffer {
|
|
bufent slots[RING_SLOTS];
|
|
bufent *head; // reads from the head
|
|
bufent *tail; // writes to the tail
|
|
size_t used;
|
|
} ringbuffer;
|
|
|
|
void ringbuffer_init(ringbuffer *rb);
|
|
|
|
char * ringbuffer_read_next(ringbuffer *rb, int * length);
|
|
void ringbuffer_read_skip(ringbuffer *rb, int length);
|
|
void ringbuffer_read_pop(ringbuffer *rb);
|
|
|
|
char * ringbuffer_write_ptr(ringbuffer *rb);
|
|
void ringbuffer_write_append(ringbuffer *rb, int length);
|
|
|
|
int ringbuffer_size(ringbuffer *rb);
|
|
int ringbuffer_capacity(ringbuffer *rb);
|
|
int ringbuffer_is_empty(ringbuffer *rb);
|
|
int ringbuffer_is_full(ringbuffer *rb);
|
|
|
|
#endif /* RINGBUFFER_H */
|