mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-09-24 15:54:12 +00:00
46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
#pragma once
|
|
#include "foundation/types.h"
|
|
/* lock free floating point ring buffer
|
|
generic implementation
|
|
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
typedef struct lfringbuffer_s { } *lfringbuffer_t;
|
|
|
|
/* create a ring buffer with the desired number of elements */
|
|
int lfringbuffer_create(lfringbuffer_t *out_ring_buffer, size_t number_of_elements);
|
|
int lfringbuffer_destroy(lfringbuffer_t ring_buffer);
|
|
|
|
/* ----- Read functions ----- */
|
|
/* get how many elements can currently be read */
|
|
size_t lfringbuffer_read_available(lfringbuffer_t ring_buffer);
|
|
|
|
/* retrieve a pointer that can be read from.
|
|
you might have to call this twice, because of ring buffer wraparound
|
|
call lfringbuffer_read_update() when you are done */
|
|
int lfringbuffer_read_get(lfringbuffer_t ring_buffer, size_t elements_requested, const float **out_buffer, size_t *elements_available);
|
|
|
|
/* call to acknowledge that you have read the bytes */
|
|
void lfringbuffer_read_update(lfringbuffer_t ring_buffer, size_t elements_read);
|
|
|
|
/* ----- Write functions ----- */
|
|
/* get how many elements can currently be written */
|
|
size_t lfringbuffer_write_available(lfringbuffer_t ring_buffer);
|
|
|
|
/* retrieve a pointer that can be written to.
|
|
you might have to call this twice, because of ring buffer wraparound
|
|
call lfringbuffer_write_update() when you are done */
|
|
int lfringbuffer_write_get(lfringbuffer_t ring_buffer, size_t elements_requested, float **out_buffer, size_t *elements_available);
|
|
|
|
/* call to acknowledge that you have written the bytes */
|
|
void lfringbuffer_write_update(lfringbuffer_t ring_buffer, size_t elements_read);
|
|
|
|
size_t lfringbuffer_write_get_position(lfringbuffer_t ring_buffer);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|