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#ifndef RING_BUFFER_H
#define RING_BUFFER_H
/*!
\file
\brief Oobt@
\author Satofumi KAMIMURA
$Id: ring_buffer.h 1557 2009-12-01 12:38:06Z satofumi $
*/
//! Oobt@̊Ǘ
typedef struct
{
char *buffer; //!< obt@ւ̃|C^
int buffer_size; //!< obt@TCY
int first; //!< obt@̐擪ʒu
int last; //!< obt@̍ŏIʒu
} ringBuffer_t;
/*!
\brief
\param[in] ring Oobt@̍\
\param[in] buffer 蓖Ăobt@
\param[in] shift_length obt@TCY 2 ̏搔
*/
extern void ring_initialize(ringBuffer_t *ring,
char *buffer, const int shift_length);
/*!
\brief Oobt@̃NA
\param[in] ring Oobt@̍\
*/
extern void ring_clear(ringBuffer_t *ring);
/*!
\brief i[f[^Ԃ
\param[in] ring Oobt@̍\
*/
extern int ring_size(const ringBuffer_t *ring);
/*!
\brief ő̊i[f[^Ԃ
\param[in] ring Oobt@̍\
*/
extern int ring_capacity(const ringBuffer_t *ring);
/*!
\brief f[^̊i[
\param[in] ring Oobt@̍\
\param[in] data f[^
\param[in] size f[^TCY
\return i[f[^
*/
extern int ring_write(ringBuffer_t *ring, const char *data, int size);
/*!
\brief f[^̎o
\param[in] ring Oobt@̍\
\param[out] buffer f[^
\param[in] size ő̃f[^TCY
\return of[^
*/
extern int ring_read(ringBuffer_t *ring, char *buffer, int size);
#endif /* ! RING_BUFFER_H */
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