#ifndef INCLUDED_C_FASTBYTERINGBUFFER_H
#define INCLUDED_C_FASTBYTERINGBUFFER_H

#ifndef INCLUDED_C_BASE_H
#include <c_Base.h>
#endif /*INCLUDED_C_BASE_H*/


/* ------------------------------------------------------------------------------------------------------------------ */
/*  */

typedef struct {
    uint8_t* buffer;     // 連續的位元組陣列
    c_size_t capacity;   // 必為 2 的冪次方 (e.g., 16, 32, 64, 256)
    c_size_t mask;       // 快取 (capacity - 1)，用來進行位元與運算
    c_size_t head;       // 讀取指標
    c_size_t tail;       // 寫入指標
    c_bool_t is_full;    // 狀態區分旗標
} c_FastByteRingBuffer_t;

c_err_t c_FastByteRingBuffer_Init(c_FastByteRingBuffer_t* self, c_size_t capacity);
void c_FastByteRingBuffer_Destroy(c_FastByteRingBuffer_t* self);

c_err_t c_FastByteRingBuffer_WriteByte(c_FastByteRingBuffer_t* self, uint8_t byte);
c_err_t c_FastByteRingBuffer_ReadByte(c_FastByteRingBuffer_t* self, uint8_t* out_byte);

c_size_t c_FastByteRingBuffer_WriteBuffer(c_FastByteRingBuffer_t* self, const uint8_t* src, c_size_t len);
c_size_t c_FastByteRingBuffer_ReadBuffer(c_FastByteRingBuffer_t* self, uint8_t* dest, c_size_t len);

c_size_t c_FastByteRingBuffer_GetSize(const c_FastByteRingBuffer_t* self);
c_bool_t c_FastByteRingBuffer_IsEmpty(const c_FastByteRingBuffer_t* self);
c_bool_t c_FastByteRingBuffer_IsFull(const c_FastByteRingBuffer_t* self);

#endif /*INCLUDED_C_FASTBYTERINGBUFFER_H*/