edge_ring.h

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#pragma once
 
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
 
#include "tone.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#define EDGE_COUNT_BITS 31u
#define EDGE_COUNT_MASK 0x7FFFFFFFu

uint32_t edge_word(uint32_t count, bool level);

uint32_t edge_word_count(uint32_t word);
bool     edge_word_level(uint32_t word);

uint64_t edge_tick(uint32_t count, uint64_t est);

typedef struct {
    uint32_t rd;         
    uint32_t last;       
    uint32_t overruns;   
} edge_ring_t;

void edge_ring_init(edge_ring_t *r);

size_t edge_ring_take(edge_ring_t *r, const uint32_t *ring, uint32_t size,
                      uint32_t wr, uint64_t est, tone_edge_t *out, size_t max,
                      bool *overrun);
 
#ifdef __cplusplus
}
#endif