mdl_rabook_vfs.h

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#pragma once
 
#include <stdint.h>
 
#include "book_chunked.h"
#include "ra8_c6link_mdl_transfer.h"
#include "ra8_io_vfs.h"
 
#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
  book_inflate_fn inflate_cb;     
  uint64_t*       table;          
  uint8_t*        compressed;     
  uint8_t*        chunk;          
  uint8_t*        scratch;        
  uint32_t        table_cap;      
  uint32_t        compressed_cap; 
  uint32_t        chunk_cap;      
  uint32_t        scratch_cap;    
} mdl_rabook_vfs_config_t;

typedef struct {
  book_chunked_t     reader;                         
  book_header_t      header;                         
  ra8_io_vfs_file_t* file;                           
  book_inflate_fn    inflate_cb;                     
  uint64_t*          table;                          
  uint8_t*           compressed;                     
  uint8_t*           chunk;                          
  uint8_t*           scratch;                        
  uint64_t           file_size;                      
  uint8_t            digest[k_ra8_mdl_sha256_bytes]; 
  uint32_t           table_cap;                      
  uint32_t           compressed_cap;                 
  uint32_t           chunk_cap;                      
  uint32_t           scratch_cap;                    
  bool               open;                           
  bool               transfer_validated;             
} mdl_rabook_vfs_t;

[[nodiscard]] ra8_err_t mdl_rabook_vfs_init(mdl_rabook_vfs_t*              ctx,
                                            const mdl_rabook_vfs_config_t* config);

[[nodiscard]] ra8_err_t mdl_rabook_vfs_validate(void*         opaque,
                                                const char*   staging_path,
                                                uint64_t      total_bytes,
                                                const uint8_t sha256[k_ra8_mdl_sha256_bytes]);

[[nodiscard]] ra8_err_t mdl_rabook_vfs_open(mdl_rabook_vfs_t* ctx, const char* path);

[[nodiscard]] ra8_err_t
mdl_rabook_vfs_read_chunk(mdl_rabook_vfs_t* ctx, uint64_t offset, uint8_t* dst, uint32_t len);

[[nodiscard]] ra8_err_t mdl_rabook_vfs_info(const mdl_rabook_vfs_t* ctx,
                                            book_header_t*          out_header,
                                            uint64_t*               out_flat_size);

[[nodiscard]] ra8_err_t mdl_rabook_vfs_close(mdl_rabook_vfs_t* ctx);
 
#ifdef __cplusplus
} /* extern "C" */
#endif