5#ifndef SPA_RINGBUFFER_H 
    6#define SPA_RINGBUFFER_H 
   28#ifndef SPA_API_RINGBUFFER 
   30  #define SPA_API_RINGBUFFER SPA_API_IMPL 
   32  #define SPA_API_RINGBUFFER static inline 
   44#define SPA_RINGBUFFER_INIT()   ((struct spa_ringbuffer) { 0, 0 }) 
   80        *index = __atomic_load_n(&rbuf->
readindex, __ATOMIC_RELAXED);
 
   81        return (int32_t) (__atomic_load_n(&rbuf->
writeindex, __ATOMIC_ACQUIRE) - *index);
 
   97                         const void *buffer, uint32_t size,
 
   98                         uint32_t offset, 
void *data, uint32_t len)
 
  100        uint32_t l0 = 
SPA_MIN(len, size - offset), l1 = len - l0;
 
  114        __atomic_store_n(&rbuf->
readindex, index, __ATOMIC_RELEASE);
 
  130        *index = __atomic_load_n(&rbuf->
writeindex, __ATOMIC_RELAXED);
 
  131        return (int32_t) (*index - __atomic_load_n(&rbuf->
readindex, __ATOMIC_ACQUIRE));
 
  147                          void *buffer, uint32_t size,
 
  148                          uint32_t offset, 
const void *data, uint32_t len)
 
  150        uint32_t l0 = 
SPA_MIN(len, size - offset), l1 = len - l0;
 
  164        __atomic_store_n(&rbuf->
writeindex, index, __ATOMIC_RELEASE);
 
SPA_API_RINGBUFFER void spa_ringbuffer_set_avail(struct spa_ringbuffer *rbuf, uint32_t size)
Sets the pointers so that the ringbuffer contains size bytes.
Definition ringbuffer.h:71
#define SPA_API_RINGBUFFER
Definition ringbuffer.h:40
#define SPA_RINGBUFFER_INIT()
Definition ringbuffer.h:53
SPA_API_RINGBUFFER int32_t spa_ringbuffer_get_read_index(struct spa_ringbuffer *rbuf, uint32_t *index)
Get the read index and available bytes for reading.
Definition ringbuffer.h:87
SPA_API_RINGBUFFER void spa_ringbuffer_write_update(struct spa_ringbuffer *rbuf, int32_t index)
Update the write pointer to index.
Definition ringbuffer.h:171
SPA_API_RINGBUFFER void spa_ringbuffer_read_update(struct spa_ringbuffer *rbuf, int32_t index)
Update the read pointer to index.
Definition ringbuffer.h:121
SPA_API_RINGBUFFER int32_t spa_ringbuffer_get_write_index(struct spa_ringbuffer *rbuf, uint32_t *index)
Get the write index and the number of bytes inside the ringbuffer.
Definition ringbuffer.h:137
SPA_API_RINGBUFFER void spa_ringbuffer_write_data(struct spa_ringbuffer *rbuf, void *buffer, uint32_t size, uint32_t offset, const void *data, uint32_t len)
Write len bytes to buffer starting offset.
Definition ringbuffer.h:155
SPA_API_RINGBUFFER void spa_ringbuffer_init(struct spa_ringbuffer *rbuf)
Initialize a spa_ringbuffer with size.
Definition ringbuffer.h:60
SPA_API_RINGBUFFER void spa_ringbuffer_read_data(struct spa_ringbuffer *rbuf, const void *buffer, uint32_t size, uint32_t offset, void *data, uint32_t len)
Read len bytes from rbuf starting offset.
Definition ringbuffer.h:105
#define SPA_MIN(a, b)
Definition defs.h:165
#define SPA_UNUSED
Definition defs.h:307
#define SPA_UNLIKELY(x)
Definition defs.h:394
#define spa_memcpy(d, s, n)
Definition defs.h:524
#define SPA_PTROFF(ptr_, offset_, type_)
Return the address (buffer + offset) as pointer of type.
Definition defs.h:222
A ringbuffer type.
Definition ringbuffer.h:47
uint32_t readindex
Definition ringbuffer.h:48
uint32_t writeindex
Definition ringbuffer.h:49