#include "configuration.h"#if(IPOD_AP != 0 )#include "gendef.h"#include "controller.h"#include "acp.h"#include "iap.h"#include "ipodvirt.h"const uint8 cmd_GetNumPlayingTracks[] = { 0x03,0x04,0x00,0x35,0xC4 };const uint8 cmd_ResetDBSelection[] = { 0x03,0x04,0x00,0x16,0xE3 };const uint8 cmd_ResetDBSelectionHierarchy[] = { 0x04,0x04,0x00,0x3B,0x01,0x00 };const uint8 cmd_GetCurrentPlayingTrackIndex[] = { 0x03,0x04,0x00,0x1E,0xDB }; extern t_iap_handler hIap; extern t_fsm ipod_library_init_fsm;    const t_vdir_lookup_node vdir_lookup_table[] = {         { IPOD_CAT_ROOT , "iPod\0" },        { IPOD_CAT_PLAYLIST , "Playlist\0" },        { IPOD_CAT_ALLTRACKS , "All Tracks\0" },        { IPOD_CAT_NOWPLAYING , "Now Playing\0" },        { IPOD_CAT_ARTIST , "Artist\0" },        { IPOD_CAT_ALBUM , "Album\0" },        { IPOD_CAT_GENRE , "Genre\0" },        { IPOD_CAT_COMPOSER , "Composer\0" },        { IPOD_CAT_AUDIOBOOK , "Audiobook\0" },        { IPOD_CAT_PODCAST , "Podcast\0" },        { IPOD_CAT_GENRE_ALL , "Genre-All\0" },        { IPOD_CAT_ARTIST_ALL , "Artist-All\0" },        { IPOD_CAT_ALBUM_ALL , "Album-All\0" },        { IPOD_CAT_COMPOSER_ALL , "Composer-All\0" },            { IPOD_CAT_PODCAST_ALL , "Podcast-All\0" },        { IPOD_CAT_INVALID , "\0" } };        t_iap_msg IPod_Message;t_iap_msg *pIPod_Message = NULL;uint8* pIPodMessageData;t_ipod_browser ipod_browser;       char* IPOD_GetVirtName(int cat){  int i=0;    do  {      if(vdir_lookup_table[i].category == cat )          return vdir_lookup_table[i].name;            i++;  } while(vdir_lookup_table[i].category != IPOD_CAT_INVALID);  return vdir_lookup_table[i].name;  // return "\0" if not found}uint16 ipod_library_init_transition(void){uint32 ipod_msg[10];uint32 num;    if(ipod_library_init_fsm.state != FSM_RUN)        return 0;            switch(ipod_library_init_fsm.transition)    {        case 0:     // fill strings with default directory names            ipod_browser.str_top = 0;            ipod_browser.dir_level = 1;            ipod_browser.status = IPOD_BROWSER_STATE_UNKNOWN;            ipod_browser.vdirs[0].dir_category = IPOD_CAT_ROOT;            ipod_browser.vdirs[0].name = (uint8*)IPOD_GetVirtName(IPOD_CAT_ROOT);            ipod_browser.vdirs[1].dir_category = IPOD_CAT_NOWPLAYING;            ipod_browser.vdirs[1].name = (uint8*)IPOD_GetVirtName(IPOD_CAT_NOWPLAYING);                        //IPOD_SendMsg( cmd_GetNumPlayingTracks );                        iap_set_cmd_get_num_playing_tracks(hIap);                        ipod_library_init_fsm.transition = 1;            return 1;                case 1:     // check ACK and answer from GetNumPlayingTracks                        if( iap_is_new_msg(0) )            {                iap_copy_msg( ipod_msg , 10 );                if( iap_is_msg_ack(ipod_msg, IAP_EXT_GET_NUM_P_TRACKS ) )                       {                    iap_flush_msg();                    switch(iap_ack_error(ipod_msg))                    {                        case 0:     // Success                            return 0;   // continue waiting for response                        default:    // Error , no playback probably                                                                                    //IPOD_SendMsgAddChecksum( cmd_ResetDBSelectionHierarchy );                                                        iap_set_cmd_reset_db_selection_hierarchy(hIap);                                                        ipod_library_init_fsm.transition = 3;                            return 1;                    }                                                }                                if( iap_is_cmd( ipod_msg, IAP_EXT_RET_NUM_P_TRACKS ))                {                    iap_flush_msg();                    num = iap_get_msg_data(ipod_msg,0,4);                    ipod_browser.vdirs[1].records_count = num;                    // num is total number of tracks queued for playback                                        //IPOD_SendMsg( cmd_GetCurrentPlayingTrackIndex );                    iap_set_cmd_get_current_playing_track_index(hIap);                                        ipod_library_init_fsm.transition = 2;   // wait for response                    return 1;                                 }                             }            return 0;                    case 2:     //check ACK and answer from GetCurrentPlayingTrackIndex            if( iap_is_new_msg(0) )            {                iap_copy_msg( ipod_msg , 10 );                if( iap_is_msg_ack(ipod_msg, IAP_EXT_GET_CUR_PT_INDEX ) )                        {                    iap_flush_msg();                    switch(iap_ack_error(ipod_msg))                    {                        case 0:     // Success                            return 0;   // continue waiting for response                        default:    // Error , no playback probably                                                        iap_set_cmd_reset_db_selection_hierarchy(hIap);                            ipod_library_init_fsm.transition = 3;                            return 1;                    }                                                }                                if( iap_is_cmd( ipod_msg, IAP_EXT_RET_CUR_PT_INDEX ))                {                    iap_flush_msg();                    num = iap_get_msg_data(ipod_msg,0,4);                    ipod_browser.vdirs[1].child_no = num;                    // num is index of currently played tracks                    ipod_browser.status = IPOD_BROWSER_STATE_READY;                                                            ipod_library_init_fsm.state = FSM_DONE;   // finished in Now Playing                    return 1;                                 }                             }            return 0;                    case 3: // wait for reset selection and stay in root            if( iap_is_new_msg(0) )            {                iap_copy_msg( ipod_msg , 10 );                if( iap_is_msg_ack(ipod_msg, IAP_EXT_RST_DB_SEL_HIERARCHY ) )                         {                    iap_flush_msg();                    switch(iap_ack_error(ipod_msg))                    {                        case 0:     // Success                            // go to root                            ipod_browser.dir_level = 0;                            ipod_browser.status = IPOD_BROWSER_STATE_READY;                             ipod_library_init_fsm.state = FSM_DONE;   // finished in Now Playing                            return 1;                                                    default:    // Error , not supported probably                                                        //IPOD_SendMsg( cmd_ResetDBSelection );                            iap_set_cmd_reset_db_selection(hIap);                            ipod_library_init_fsm.transition = 4;                            return 1;                    }                                                }                            }            return 0;                    case 4: // wait for reset selection and stay in root            if( iap_is_new_msg(0) )            {                iap_copy_msg( ipod_msg , 10 );                if( iap_is_msg_ack(ipod_msg, IAP_EXT_RST_DB_SELECTION ) )                        {                    iap_flush_msg();                    switch(iap_ack_error(ipod_msg))                    {                        case 0:     // Success                            // go to root                            ipod_browser.dir_level = 0;                            ipod_library_init_fsm.state = FSM_DONE;   // finished in Now Playing                            ipod_browser.status = IPOD_BROWSER_STATE_READY;                             return 1;                                                    default:    // Error , unexpected                                                        ipod_library_init_fsm.state = FSM_ERROR;   // finished in Now Playing                            ipod_library_init_fsm.error_reason = E_INVALID_DEVICE_ACTION;                            return 1;                    }                                                }                            }            return 0;                                                                            }    }// moved from iap.cint iap_is_new_msg(int messageId)   {  if(pIPod_Message!=NULL)  {      if(!messageId)         return 1;              if(messageId == pIPod_Message->Code)        return 1;  }  return 0;} void iap_copy_msg( uint32 *pmsg , uint32 nbytes ){  uint8 *cp,*src;  uint32 i;     pmsg[0] = pIPod_Message->Code;   pmsg[1] = pIPod_Message->ChunkLen;   cp = (uint8*) (pmsg+2);    src = pIPodMessageData;   for(i=0;(i<pIPod_Message->ChunkLen)&&(i<nbytes);i++)   {      *cp = *src;      cp++;      src++;   }}int iap_is_msg_ack(uint32 *pmsg, uint32 CMD_ID ){   uint32 msgid;   uint8 *cp;      if( *pmsg == (0x40000 | IAP_EXT_ACK ) )   {      if(!CMD_ID)          return 1;            cp = (uint8*)(&pmsg[2]);            msgid = (cp[1]<<8) | cp[2];                if( (0xFFFF & CMD_ID) == msgid )          return 1;         }      return 0;}int iap_ack_error(uint32 *pmsg){   uint8 *cp;      if(*pmsg == ( 0x40000 | IAP_EXT_ACK ) )   {      cp = (uint8*)(&pmsg[2]);            return cp[0];         }      return 0xFF;  // not acknowledge message}void iap_flush_msg(void){    pIPod_Message = NULL;}uint32 iap_get_msg_data(uint32 *pmsg , uint16 payloffs , uint16 nbytes ){    uint8* cp;    uint32 val = 0;        if (nbytes>4)      return 0;        cp = (uint8*) &pmsg[2];        while(nbytes)    {       val = val<<8;       val |= *cp;       cp++;       nbytes--;    }        return val;   }#endif    // IPOD_AP