usbloadergx/source/usbloader/frag.h

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// worst case wbfs fragmentation scenario:
// 9GB (dual layer) / 2mb (wbfs sector size) = 4608
#define MAX_FRAG 20000
// max that ehcmodule_frag will allow at the moment is about:
// 40000/4/3-1 = 21844
#ifdef __cplusplus
extern "C"
{
#endif
#include "libwbfs/libwbfs.h"
typedef struct
{
u32 offset; // file offset, in sectors unit
u32 sector;
u32 count;
} Fragment;
typedef struct
{
u32 size; // num sectors
u32 num; // num fragments
u32 maxnum;
Fragment frag[MAX_FRAG];
} FragList;
typedef int ( *frag_append_t )( void *ff, u32 offset, u32 sector, u32 count );
int _FAT_get_fragments ( const char *path, _frag_append_t append_fragment, void *callback_data );
void frag_init( FragList *ff, int maxnum );
int frag_append( FragList *ff, u32 offset, u32 sector, u32 count );
int _frag_append( void *ff, u32 offset, u32 sector, u32 count );
int frag_concat( FragList *ff, FragList *src );
// in case a sparse block is requested,
// the returned poffset might not be equal to requested offset
// the difference should be filled with 0
int frag_get( FragList *ff, u32 offset, u32 count,
u32 *poffset, u32 *psector, u32 *pcount );
int frag_remap( FragList *ff, FragList *log, FragList *phy );
int get_frag_list( u8 *id );
int set_frag_list( u8 *id );
#ifdef __cplusplus
}
#endif