reflow_cache.h

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#pragma once
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <stddef.h>
#include <stdint.h>
 
#include "ra8_err.h"
#include "reflow.h"
 
/* ===========================================================================
 * Format identity
 * ===========================================================================
 */

typedef enum : uint32_t {
  k_reflow_cache_magic   = 0x52464331U, 
  k_reflow_cache_version = 2U,          
} reflow_cache_id_t;

typedef enum : size_t {
  k_reflow_cache_header_bytes = 52U, 
  k_reflow_cache_glyph_bytes  = 20U, 
  k_reflow_cache_page_bytes   = 8U,  
} reflow_cache_layout_t;
 
/* ===========================================================================
 * Public API
 * ===========================================================================
 */

[[nodiscard]] ra8_err_t reflow_cache_size(const reflow_t* engine, size_t* out_bytes);

[[nodiscard]] ra8_err_t reflow_cache_serialize(const reflow_t* engine,
                                               const uint8_t*  content,
                                               size_t          content_len,
                                               uint8_t*        out_buf,
                                               size_t          out_cap,
                                               size_t*         out_len);

[[nodiscard]] ra8_err_t reflow_cache_load(reflow_t*      engine,
                                          const uint8_t* content,
                                          size_t         content_len,
                                          const uint8_t* buf,
                                          size_t         len);
 
#ifdef __cplusplus
}
#endif