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00021 #ifndef _RINGBUFFER_H
00022 #define _RINGBUFFER_H
00023
00024 #ifdef __cplusplus
00025 extern "C" {
00026 #endif
00027
00028 #include <sys/types.h>
00029
00044 typedef struct
00045 {
00046 char *buf;
00047 size_t len;
00048 }
00049 jack_ringbuffer_data_t ;
00050
00051 typedef struct
00052 {
00053 char *buf;
00054 volatile size_t write_ptr;
00055 volatile size_t read_ptr;
00056 size_t size;
00057 size_t size_mask;
00058 int mlocked;
00059 }
00060 jack_ringbuffer_t ;
00061
00072 jack_ringbuffer_t *jack_ringbuffer_create(size_t sz);
00073
00080 void jack_ringbuffer_free(jack_ringbuffer_t *rb);
00081
00102 void jack_ringbuffer_get_read_vector(const jack_ringbuffer_t *rb,
00103 jack_ringbuffer_data_t *vec);
00104
00124 void jack_ringbuffer_get_write_vector(const jack_ringbuffer_t *rb,
00125 jack_ringbuffer_data_t *vec);
00126
00137 size_t jack_ringbuffer_read(jack_ringbuffer_t *rb, char *dest, size_t cnt);
00138
00154 size_t jack_ringbuffer_peek(jack_ringbuffer_t *rb, char *dest, size_t cnt);
00155
00167 void jack_ringbuffer_read_advance(jack_ringbuffer_t *rb, size_t cnt);
00168
00176 size_t jack_ringbuffer_read_space(const jack_ringbuffer_t *rb);
00177
00185 int jack_ringbuffer_mlock(jack_ringbuffer_t *rb);
00186
00194 void jack_ringbuffer_reset(jack_ringbuffer_t *rb);
00195
00205 size_t jack_ringbuffer_write(jack_ringbuffer_t *rb, const char *src,
00206 size_t cnt);
00207
00219 void jack_ringbuffer_write_advance(jack_ringbuffer_t *rb, size_t cnt);
00220
00228 size_t jack_ringbuffer_write_space(const jack_ringbuffer_t *rb);
00229
00230
00231 #ifdef __cplusplus
00232 }
00233 #endif
00234
00235 #endif
00236