54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
#include "jl_ringbuf.h"
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struct RingBuffer {
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int size;
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jack_ringbuffer_t *buf;
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};
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RingBuffer *jlrb_new(int size)
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{
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RingBuffer *rb = jl_malloc_exit(sizeof(RingBuffer));
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rb->size = size;
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// It appears that we need to add one extra byte to the allocation
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// in order to get the capacity we desire -jdl 2015-08-29.
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rb->buf = jack_ringbuffer_create(sizeof(void *) * size + 1);
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return rb;
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}
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void jlrb_free(RingBuffer ** rb)
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{
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jack_ringbuffer_free((*rb)->buf);
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jl_free(*rb);
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*rb = NULL;
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}
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int jlrb_size(RingBuffer * rb)
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{
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return rb->size;
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}
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inline int jlrb_count(RingBuffer * rb)
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{
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return jack_ringbuffer_read_space(rb->buf) / sizeof(void *);
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}
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inline bool jlrb_put(RingBuffer * rb, void *data)
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{
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int writeSpace = jack_ringbuffer_write_space(rb->buf);
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if (writeSpace < sizeof(void *)) {
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return false;
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}
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jack_ringbuffer_write(rb->buf, (char *)(&data), sizeof(void *));
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return true;
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}
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inline void *jlrb_get(RingBuffer * rb)
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{
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if (jlrb_count(rb) == 0) {
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return NULL;
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}
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void *data;
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jack_ringbuffer_read(rb->buf, (char *)(&data), sizeof(void *));
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return data;
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}
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