(...)
ROM:14D27A00 08 49                       LDR     R1, ONREDRAW_METHOD
ROM:14D27A02 20 1C                       ADDS    R0, R4, #0
ROM:14D27A04 00 F0 2A F8                 BL      _DISP_DESC_SetOnRedraw
(...)
ROM:14D27A24 85 4E 49 14 ONREDRAW_METHOD DCD loc_14494E84+1
(...)

include "x.inc"
;C901 SW-R1GA028
;"PlayerChanger patch"
;Ability to redraw Walkman by elf
;(c) UltraShot
;(p) mc_kibel

hook1         = 0x14D27A24
patch         = 0x15DB69F0
FindBook     = 0x1416DA65
strcmp         = 0x14C80395

;-------------------------------------------

org hook1
    DCD patch1+1

;-------------------------------------------

org patch
patch1:
    PUSH {R0-R7,LR}
    BL ReceiveSignal
    POP {R0-R7,PC}
ReceiveSignal:
        PUSH        {R0-R7, LR}
        MOV        R7, R0
        LDR        R0, dword_IsPCBook
        LDR        R6, dword_FindBook
        BLX        R6
        CMP        R0, 0
        BEQ        BookNotFound
        LDR        R5, [R0, 0x18]
        MOV        R0, R7
        BLX        R5
        POP        {R0-R7,PC}
BookNotFound:
        MOV        R0, R7
        POP        {R0-R7, PC}

;-----------------------------------------------
;check our book
isPCBook:
        PUSH    {LR}
        CMP        R0, 0
        BEQ        isPCBook_Error
        LDR        R0, [R0]
        LDR        R0, [R0, 4]
        adr        R1, dword_MyBook
        LDR        R3, dword_strcmp
        BLX        R3
        CMP        R0, 0
        BEQ        isPCBook_Exit
isPCBook_Error:
        MOV        R0, 0
        POP        {PC}
isPCBook_Exit:
        MOV        R0, 1
        POP        {PC}
;-----------------------------------------------
align 4
dword_FindBook    DCD FindBook
dword_strcmp     DCD strcmp
dword_IsPCBook    DCD isPCBook+1
align 4
dword_MyBook     DCB "AdvPlayer",0

typedef struct
{
  u16 unk;
  u16 unk2;
  wchar_t * path;
  wchar_t * name;
  wchar_t * MIME;
  int fulltime;
} BOOK_PLAYER_TRACK_DESC;
  
  
typedef struct
{
  char dummy[0x5C];
  wchar_t pos;
  char dummy1[0xE];
  int time;
  char dummy2[0x4];
  BOOK_PLAYER_TRACK_DESC * dsc;
  char dummy3[2];
  wchar_t pos2;
  wchar_t pos3;
  char dummy4[22];
  int tracks_count;
}BOOK_PLAYER_2020;

void somefn (){ 
BOOK_PLAYER_2020 *bkp=(BOOK_PLAYER_2020*)bk;
wchar_t *filename = bkp->dsc->name;
wchar_t *filepath = bkp->dsc->path;
}

void dump ()
{
  PROCESS pid = current_process (); 
  char *ptr = (char*)malloc(4096000);
  memset(ptr,0,4096000);
  get_mem (pid,0x28000000,ptr,4096000);
  int f = _fopen (L"/card/other/",L"dump.bin",WA_Write | WA_Append | WA_Create,0x180,0);
  fwrite(f,ptr,4096000);
  mfree (ptr);
  fclose (f);
}

typedef struct
{
  wchar_t *fname;
  wchar_t *fpath;
  char *MIME;
  wchar_t *extension;
}BOOK_PLAYER_TRACK_DESC_3210;

typedef struct
{
  int unk;
  BOOK_PLAYER_TRACK_DESC_3210 *xdesc;
}DESC_PTR;

typedef struct
{
  char dummy1[0x4C];
  int time
  int unk_1;
  DESC_PTR *dsc;
  int unk_2;
}BOOK_PLAYER_3210;


void somefn ()
{
    BOOK_PLAYER_3210 *player = (BOOK_PLAYER_3210*)FindBook(isAudioPlayerBook());
    debug_printf ("\n -->> Current path: %ls ; name: %ls ; time: %d \n", 
                player->dsc->xdesc->fpath, 
                player->dsc->xdesc->fname,
                player->time);
};