cbuffercf

Circular buffer object for storing and retrieving samples in a first-in/first-out (FIFO) manner using a minimal amount of memory

Public Functions

cbuffercf	cbuffercf_create(unsigned int _max_size)
cbuffercf	cbuffercf_create_max(unsigned int _max_size, unsigned int _max_read)
cbuffercf	cbuffercf_copy(cbuffercf _q)
int	cbuffercf_destroy(cbuffercf _q)
int	cbuffercf_print(cbuffercf _q)
int	cbuffercf_reset(cbuffercf _q)
unsigned int	cbuffercf_size(cbuffercf _q)
unsigned int	cbuffercf_max_size(cbuffercf _q)
unsigned int	cbuffercf_max_read(cbuffercf _q)
unsigned int	cbuffercf_space_available(cbuffercf _q)
int	cbuffercf_is_empty(cbuffercf _q)
int	cbuffercf_is_full(cbuffercf _q)
int	cbuffercf_push(cbuffercf _q, float complex _v)
int	cbuffercf_write(cbuffercf _q, float complex * _v, unsigned int _n)
int	cbuffercf_pop(cbuffercf _q, float complex * _v)
int	cbuffercf_read(cbuffercf _q, unsigned int _num_requested, float complex ** _v, unsigned int * _num_read)
int	cbuffercf_release(cbuffercf _q, unsigned int _n)

Interfaces

cbuffercf cbuffercf_create(unsigned int _max_size)∞

Create circular buffer object of a particular maximum storage length

• _max_size : maximum buffer size, 0 < _max_size

cbuffercf cbuffercf_create_max(unsigned int _max_size, unsigned int _max_read)∞

Create circular buffer object of a particular maximum storage size and specify the maximum number of elements that can be read at any any given time

• _max_size : maximum buffer size, 0 < _max_size
• _max_read : maximum size that will be read from buffer

cbuffercf cbuffercf_copy(cbuffercf _q)∞

Copy object including all internal objects and state

int cbuffercf_destroy(cbuffercf _q)∞

Destroy cbuffer object, freeing all internal memory

int cbuffercf_print(cbuffercf _q)∞

Print cbuffer object properties to stdout

int cbuffercf_reset(cbuffercf _q)∞

Clear internal buffer

unsigned int cbuffercf_size(cbuffercf _q)∞

Get the number of elements currently in the buffer

unsigned int cbuffercf_max_size(cbuffercf _q)∞

Get the maximum number of elements the buffer can hold

unsigned int cbuffercf_max_read(cbuffercf _q)∞

Get the maximum number of elements you may read at once

unsigned int cbuffercf_space_available(cbuffercf _q)∞

Get the number of available slots (max_size - size)

int cbuffercf_is_empty(cbuffercf _q)∞

Return flag indicating if the buffer is empty or not

int cbuffercf_is_full(cbuffercf _q)∞

Return flag indicating if the buffer is full or not

int cbuffercf_push(cbuffercf _q, float complex _v)∞

Write a single sample into the buffer

• _q : circular buffer object
• _v : input sample

int cbuffercf_write(cbuffercf _q, float complex * _v, unsigned int _n)∞

Write a block of samples to the buffer

• _q : circular buffer object
• _v : array of samples to write to buffer
• _n : number of samples to write

int cbuffercf_pop(cbuffercf _q, float complex * _v)∞

Remove and return a single element from the buffer by setting the value of the output sample pointed to by _v

• _q : circular buffer object
• _v : pointer to sample output

int cbuffercf_read(cbuffercf _q, unsigned int _num_requested, float complex ** _v, unsigned int * _num_read)∞

Read buffer contents by returning a pointer to the linearized array; note that the returned pointer is only valid until another operation is performed on the circular buffer object

• _q : circular buffer object
• _num_requested : number of elements requested
• _v : output pointer
• _num_read : number of elements referenced by _v

int cbuffercf_release(cbuffercf _q, unsigned int _n)∞

Release _n samples from the buffer

• _q : circular buffer object
• _n : number of elements to release