static __inline__ navauto_mov_explorer_rec_t navauto_mov_explorer_is_file(bool b_direction, navauto_mov_options_t options)
{
// Look for the next playable file in the current directory
while(nav_filelist_set(0, b_direction))
{
if (nav_file_isdir())
break;
if (!nav_file_checkext(g_navauto_filter))
continue;
return NAVAUTO_MOV_EXPLORER_OK;
}
// In case it needs to stay in the current directory,
if ( (options & NAVAUTO_MOV_OPTS_STAY_CURRENT_DIR)
|| (g_navauto_exp_mode == NAVAUTO_MODE_DIRONLY))
{
if (!nav_file_isdir() && nav_file_checkext(g_navauto_filter))
{
g_navauto_u16_pos += (!b_direction == FS_FIND_NEXT)?(1):(-1);
}
// Update g_navauto_u16_pos
while(nav_filelist_set(0, !b_direction))
{
if (nav_file_isdir())
break;
if (!nav_file_checkext(g_navauto_filter))
continue;
g_navauto_u16_pos += (!b_direction == FS_FIND_NEXT)?(1):(-1);
}
// Go to the first/last file
if (navauto_mov_explorer_select_limit_file_cur_folder(b_direction) == NAVAUTO_MOV_EXPLORER_OK)
{
if (options & NAVAUTO_MOV_OPTS_STAY_CURRENT_DIR)
return NAVAUTO_MOV_EXPLORER_OK;
else
return NAVAUTO_MOV_EXPLORER_OK_LOOP;
}
return NAVAUTO_MOV_EXPLORER_EMPTY;
}
// At this point, it means it reached a limit, there is no more playable files
switch(is_file_process_fct[(b_direction == FS_FIND_NEXT)?1:0](b_direction))
{
case NAVAUTO_MOV_EXPLORER_RECURSIVE:
return NAVAUTO_MOV_EXPLORER_RECURSIVE;
case NAVAUTO_MOV_EXPLORER_OK:
return NAVAUTO_MOV_EXPLORER_OK;
default:
break;
}
// At this point, there is no directory available and the limit function
// returns ERROR
if (navauto_mov_explorer_updir(b_direction) == NAVAUTO_MOV_EXPLORER_RECURSIVE)
return NAVAUTO_MOV_EXPLORER_RECURSIVE;
return navauto_mov_ok_loop(b_direction, options);
}
int fb_ls_ext(const char *ext){
int CurrentNavId = -1;
// if no navigator available, return an error
if ((CurrentNavId = fsaccess_alloc_nav_id()) < 0) return ERROR_NO_NAV_ID;
// select the navigator
nav_select( CurrentNavId );
// navigate to folder
if(nav_setcwd((FS_STRING)currentDirectory, FALSE, FALSE) == FALSE){
fsaccess_free_nav_id(CurrentNavId);
return ERROR_NOT_A_DIRECTORY;
}
if(nav_filelist_first(FS_FILE)==FALSE){
fsaccess_free_nav_id(CurrentNavId);
return ERROR_UNKNOWN;
}
char filename[255];
if(nav_file_getname(filename,sizeof(filename))==FALSE){
fsaccess_free_nav_id(CurrentNavId);
return ERROR_UNKNOWN;
}
seprintf("Contents of folder %s:\n\n",currentDirectory);
nav_filelist_single_enable( FS_DIR );
int filecount = nav_filelist_nb(FS_DIR);
short a;
for(a=0; a < filecount; a++){
if(nav_filelist_goto(a)==FALSE)return ERROR_UNKNOWN;
char filename[255];
if(nav_file_getname(filename,sizeof(filename))==FALSE){
fsaccess_free_nav_id(CurrentNavId);
return ERROR_UNKNOWN;
}
seprintf("%d: %s\n",a,filename);
}
nav_filelist_single_enable( FS_FILE );
filecount = nav_filelist_nb(FS_FILE);
for(a=0; a < filecount; a++){
if(nav_filelist_goto(a)==FALSE)return ERROR_UNKNOWN;
if(!nav_file_checkext(ext))continue;
char filename[255];
if(nav_file_getname(filename,sizeof(filename))==FALSE){
fsaccess_free_nav_id(CurrentNavId);
return ERROR_UNKNOWN;
}
seprintf("%d: %s\n",a,filename);
}
fsaccess_free_nav_id(CurrentNavId);
return 0;
}
int fb_iterator_has_next(){
if(iterator_index>=filecount)return 0;
int a = iterator_index;
while(1){
if(a==filecount)return 0;
if(nav_filelist_goto(a++)==FALSE)return 0;
if(!nav_file_checkext(ext))continue;
return 1;
}
}
//! This function jumps to the next or previous file in file list corresponding at a play list file
//!
//! @param b_direction jump direction (FS_FIND_NEXT or FS_FIND_PREV)
//!
//! @return The status of the action
//!
//! @verbatim
//! This routine is not authorized then a play list file is not opened
//! @endverbatim
//!
Navauto_mov_state navauto_mov_playlist( bool b_direction )
{
bool b_endof_loop;
b_endof_loop = false;
Navauto_mov_state state;
state.bitfield.all = 0;
while( 1 )
{
if( NAVAUTO_RAND_ON == g_navauto_rand )
{
g_navauto_u16_pos = navauto_rand_choose(g_navauto_u16_pos, g_navauto_u16_nb);
pl_nav_setpos( g_navauto_u16_pos + 1 );
}
else
{
g_navauto_u16_pos += (FS_FIND_NEXT==b_direction)? 1 : -1;
if( !pl_nav_setpos( g_navauto_u16_pos + 1 ) )
{
// Loop finish or error
if( b_endof_loop )
{
state.status = NAVAUTO_MOV_DISKERROR;
return state;
}
b_endof_loop = true;
if( FS_FIND_NEXT == b_direction )
{
g_navauto_u16_pos = (uint16_t) -1; // end of list then go to the beginning
}else{
g_navauto_u16_pos = pl_nav_getnbfile(); // beginning of list then go to the end
}
continue;
}
}
if (nav_filelist_validpos() && nav_file_checkext(g_navauto_filter))
break;
// Here it is a DEAD path or to large for system memory
}
g_navauto_u16_pos = pl_nav_getpos() - 1;
if( b_endof_loop )
{
state.status = NAVAUTO_MOV_OK_LOOP;
return state;
}
state.status = NAVAUTO_MOV_OK;
return state;
}
//! This function goes to the previous position in filtered file list
//!
//! @return false in case of an error or no next file, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
bool nav_filterlist_previous( void )
{
uint16_t u16_current_pos;
u16_current_pos = nav_filelist_get();
while( nav_filelist_set( 0, FS_FIND_PREV ) )
{
if( nav_file_isdir()
|| nav_file_checkext( fs_g_nav.sz_filterext ) )
{
fs_g_nav.u16_pos_filterlist--;
return true;
}
}
nav_filelist_goto( u16_current_pos );
return false;
}
int fb_iterator_seek(int i){
if(i>=filecount) return ERROR_INDEX_OUT_OF_BOUNDS;
if(i<0) return ERROR_INDEX_OUT_OF_BOUNDS;
int j = 0;
while(i>=0 && j<filecount){
nav_filelist_goto(j++);
if(nav_file_checkext(ext))i--;
}
j--;
//Seeker reached end of directory without successfully seeking i files
//with file extension ext.
if(i>=0)return ERROR_INDEX_OUT_OF_BOUNDS;
iterator_index = j;
return 0;
}
//! This function selects the first or the last playable file on the current folder
//!
//! @param b_direction direction of navigation (FS_FIND_NEXT or FS_FIND_PREV)
//!
//! @return true if a file is selected
//! false otherwise
//!
static navauto_mov_explorer_rec_t navauto_mov_explorer_select_limit_file_cur_folder(bool b_direction)
{
if ((b_direction == FS_FIND_NEXT)?nav_filelist_first(FS_FILE):nav_filelist_last(FS_FILE))
{
// Look for the 1st or the last playable file in the current directory
// Find the 1st or the last valid file
while(!nav_file_checkext(g_navauto_filter))
{
if (!nav_filelist_set(0, b_direction))
return NAVAUTO_MOV_EXPLORER_ERROR;
}
return NAVAUTO_MOV_EXPLORER_OK;
}
else
return NAVAUTO_MOV_EXPLORER_ERROR;
}
char *fb_iterator_next(){
static char filename[255];
while(1){
if(iterator_index==filecount){
return NULL;
}
if(nav_filelist_goto(iterator_index++)==FALSE){
return NULL;
}
if(!nav_file_checkext(ext))continue;
if(nav_file_getname(filename,sizeof(filename))==FALSE){
return NULL;
}
return filename;
}
}
//! This function goes to the next position in the filtered file list
//!
//! @return false in case of error or no next file, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
bool nav_filterlist_next( void )
{
uint16_t u16_current_pos;
u16_current_pos = nav_filelist_get();
while( nav_filelist_set( 0, FS_FIND_NEXT ) )
{
if( nav_file_isdir()
|| nav_file_checkext( fs_g_nav.sz_filterext ) )
{
if( FS_NO_SEL == u16_current_pos )
{
fs_g_nav.u16_pos_filterlist = 0;
}else{
fs_g_nav.u16_pos_filterlist++;
}
return true;
}
}
nav_filelist_goto( u16_current_pos );
return false;
}
//! @brief This function manages the ls command
//!
//! @param b_more enable the '|more' management when true otherwise no '|more' management
//!
void ushell_cmd_ls( bool b_more )
{
uint8_t str_char[MAX_FILE_PATH_LENGTH];
uint16_t u16_i,u16_nb_file,u16_nb_dir,last_i;
uint8_t ext_filter=false;
//** Print drive name
printf("%c: volume is %s\r\n", 'a'+nav_drive_get(), mem_name(nav_drive_get()) );
printf("Drive uses ");
switch (nav_partition_type())
{
case FS_TYPE_FAT_12:
printf("FAT12\n\r");
break;
case FS_TYPE_FAT_16:
printf("FAT16\n\r");
break;
case FS_TYPE_FAT_32:
printf("FAT32\n\r");
break;
default:
printf("an unknown partition type\r\n");
return;
}
//** Print directory name
if( !nav_dir_name( (FS_STRING)str_char, MAX_FILE_PATH_LENGTH ) )
return;
printf("Dir name is %s\n\r",str_char);
//** Check extension filter in extra parameters
if(g_s_arg[0][0]!=0)
{
if(g_s_arg[0][0] == '*' && g_s_arg[0][1]=='.')
{
ext_filter=true;
for(u16_i=2; u16_i<USHELL_SIZE_CMD_LINE; u16_i++)
{
g_s_arg[0][u16_i-2]=g_s_arg[0][u16_i];
}
}
}
//** Print files list
printf(" Size Name\n\r");
// Init loop at the beginning of directory
nav_filelist_reset();
u16_nb_file=0;
u16_nb_dir=0;
last_i=0;
// For each file in list
while( nav_filelist_set(0,FS_FIND_NEXT) )
{
if(!ext_filter)
{
// No extension filter
if( nav_file_isdir() )
{
printf("Dir ");
u16_nb_dir++; // count the number of directory
}else{
printf(" ");
}
}
else
{
// If extension filter then ignore directories
if(nav_file_isdir())
continue;
// Check extension
if(!nav_file_checkext((FS_STRING)g_s_arg[0]))
continue;
}
u16_nb_file++; // count the total of files (directories and files)
// Check 'more' step
if( b_more && ((u16_nb_file%USHELL_NB_LINE)==0) && (u16_nb_file!=0) && (last_i != u16_nb_file) )
{
last_i=u16_nb_file;
if( !ushell_more_wait() )
return; // Exit LS command
}
// Display file
nav_file_name((FS_STRING)str_char, MAX_FILE_PATH_LENGTH, FS_NAME_GET, true);
printf("%10lu %s\n\r", nav_file_lgt(), str_char);
}
// Display total number
printf(" %4i Files\r\n", u16_nb_file-u16_nb_dir );
printf(" %4i Dir\r\n", u16_nb_dir );
}
//! This function opens a file list at the current position in navigator
//!
//! @param b_playlist if true then the current selected file is a play list file to open
//! else create a file list with files included in a disk part
//! @param pos If b_playlist true, then position in the play list to start
//! else folder level of the current position
//!
//! @return false, in case of error or file list empty
//!
bool navauto_open( bool b_playlist , uint16_t pos )
{
Navauto_mov_state state;
g_navauto_b_playlist = b_playlist;
g_navauto_u16_dir_level_root = 0;
g_navauto_u16_nb = 0;
if( b_playlist )
{
g_navauto_u16_pos = pos;
if( !pl_main_open(false) )
return false;
g_navauto_u16_nb = pl_nav_getnbfile();
if( 0 == g_navauto_u16_nb )
return false;
if( NAVAUTO_RAND_OFF == navauto_getrand() )
{
if( pl_nav_setpos( g_navauto_u16_pos ))
{
if( nav_filelist_validpos() )
return true;
}
}else{
navauto_rand_init();
}
// Error position then restart at the beginning
g_navauto_u16_pos = 0;
}
else
{
#if( FS_NAV_AUTOMATIC_NBFILE == ENABLE )
Fs_index index;
Fs_index index2;
Navauto_rand rand_mode;
uint16_t u16_current_pos=0;
index.u8_lun = 0xFF; // Reset index (by default no valid selected file)
g_navauto_u16_dir_level = pos;
rand_mode = navauto_getrand(); // Save random mode
navauto_setrand( NAVAUTO_RAND_OFF );
// If no valid file then found the first valid file
if( !nav_file_checkext( g_navauto_filter ))
{
// Go to previous position because "navauto_mov_explorer()" execute a next before search valid file
if( !nav_filelist_set( 0 , FS_FIND_PREV ) )
nav_filelist_reset();
state = navauto_mov_explorer(FS_FIND_NEXT, NAVAUTO_MOV_OPTS_NONE);
if((NAVAUTO_MOV_OK_LOOP != state.status)
&& (NAVAUTO_MOV_OK != state.status) )
{
navauto_setrand(rand_mode);
return false; // List empty
}
}
index = nav_getindex();
// Compute the size of file list and search the position of selected file
navauto_mov_explorer_reset(); // Go to beginning of loop
// Note: the number of file is updated in navauto_mov_explorer() routine when the end of list is detected
while( navauto_mov_explorer( FS_FIND_NEXT, NAVAUTO_MOV_OPTS_NONE ).status == NAVAUTO_MOV_OK )
{
index2 = nav_getindex();
// Check the current position with the selected file
if( (index.u8_lun == index2.u8_lun)
&& (index.u32_cluster_sel_dir == index2.u32_cluster_sel_dir)
&& (index.u16_entry_pos_sel_file == index2.u16_entry_pos_sel_file) )
{
u16_current_pos = g_navauto_u16_pos; // Save the position number found
g_navauto_u16_dir_level_root = g_navauto_u16_dir_level;
}
}
navauto_setrand(rand_mode); // Restore random mode
if( 0 == g_navauto_u16_nb )
return false; // loop empty
// Go to a file from file list
if( NAVAUTO_RAND_OFF == navauto_getrand() )
{
if( 0xFF != index.u8_lun )
{
// Reselect the file selected at startup
nav_gotoindex( &index ); // Go to this one
g_navauto_u16_dir_level = g_navauto_u16_dir_level_root; // Update position file
g_navauto_u16_pos = u16_current_pos; // Update folder level corresponding at file
}
// Else, the first file is already selected at the end of "compute file list size" loop
return true;
}else{
navauto_rand_init();
}
#else
Fs_index index;
Navauto_rand rand_mode;
rand_mode = navauto_getrand();
navauto_setrand(NAVAUTO_RAND_OFF);
// If no valid file then find the first valid file
if( !nav_file_checkext( g_navauto_filter ))
{
// Go to previous position because "navauto_mov_explorer()" execute a next before search valid file
if( !nav_filelist_set( 0 , FS_FIND_PREV ) )
nav_filelist_reset();
state = navauto_mov_explorer(FS_FIND_NEXT, NAVAUTO_MOV_OPTS_NONE);
if((NAVAUTO_MOV_OK_LOOP != state.status)
&& (NAVAUTO_MOV_OK != state.status) )
{
navauto_setrand(rand_mode);
return false; // List empty
}
}
index = nav_getindex();
navauto_setrand(rand_mode);
navauto_mov_explorer_reset();
// Compute directory level
g_navauto_u16_dir_level = 0;
while(nav_dir_gotoparent())
g_navauto_u16_dir_level++;
g_navauto_u16_dir_level_root = g_navauto_u16_dir_level;
//g_navauto_u16_dir_level = pos;
// Restore index
nav_gotoindex(&index);
g_navauto_u16_nb = 0xFFFF;
if( NAVAUTO_RAND_OFF == navauto_getrand() )
navauto_rand_init();
if( nav_file_checkext( g_navauto_filter ))
{
// Valid file then update position with the first position but it is not the first !
g_navauto_u16_pos = 1;
return true;
}
#endif
}
// Find first file or use the random feature
state = navauto_mov(FS_FIND_NEXT, NAVAUTO_MOV_OPTS_NONE);
if((NAVAUTO_MOV_OK_LOOP != state.status)
&& (NAVAUTO_MOV_OK != state.status) )
return false; // List empty
return true;
}
bool ai_usb_ms_wav_support_is_audio_file(void)
{
if (nav_file_checkext("wav"))
return true;
return false;
}
//! This function opens the current selected file in the current navigator
//!
//! @param b_undo true to authorize the undo feature
//!
//! @return false in case of error, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
bool pl_main_open( bool b_undo )
{
uint8_t nav_id_save;
if( pl_main_isopen() )
return false;
// Select the play list file in "play list" navigator
nav_id_save = nav_get(); // Save current navigator
nav_copy( FS_NAV_ID_PLAYLIST );
nav_select( FS_NAV_ID_PLAYLIST );
// Make sure the selected file is a playlist
if( nav_file_checkext("m3u") )
{
pl_g_list_type = E_PL_M3U;
}else
if( nav_file_checkext("pls") )
{
pl_g_list_type = E_PL_PLS;
}else
if( nav_file_checkext("smp") )
{
pl_g_list_type = E_PL_SMP;
}else
goto pl_main_open_end;
// Open list
#if( PL_READONLY == false )
pl_g_list_undo = b_undo;
pl_g_list_is_modify = false;
pl_g_list_is_readonly = nav_file_isreadonly();
if( pl_g_list_is_readonly )
{
if( !reader_txt_open( true ))
goto pl_main_open_end;
}else{
if( !reader_txt_open( false ))
goto pl_main_open_end;
}
#else
if( !reader_txt_open( true ))
goto pl_main_open_end;
#endif
// Compute the number of file in list
pl_g_u16_list_size = 0;
while( 0 == file_eof() )
{
if( pl_main_readline(PL_MAIN_READLINE_OPT_CHECKLINE,0,NULL,NULL) )
pl_g_u16_list_size++; // Add a file
}
// Go to at the beginning of text file
reader_txt_beg();
pl_g_u16_list_sel = 0; // Don't select a file
pl_g_list_is_open = true; // Play list file is opened
nav_select( nav_id_save ); // Re select the previous navigator
nav_filelist_reset();
pl_main_open_end:
nav_select( nav_id_save ); // Re select the previous navigator
return pl_g_list_is_open;
}
//! This function computes the number of files and/or directories in filtered file list
//! This function is not blocking. It will return after \<retry\> iteration if the result
//! is not yet computed.
//!
//! @param fl_type FL_ALL To check all types (files and directories). <br>
//! FL_DIR To check the directory presence. <br>
//! FL_FILE To check the file presence.
//!
//! @param sz_filterext Extension filter (ASCII format, e.g.: "txt" or "txt,d*,wk" ). <br>
//! If this argument in NULL, then it uses the default filter used by the filterlist. <br>
//! This argument is also ignored for b_type == FS_DIR.
//! @param p_total Pointer to the result which will be updated by the function (added).
//! Initialization shall be done before entering into this function.
//! @param retry Number of files seen before leaving the function. 0 means that the
//! function is blocking until the result is known.
//!
//! @return number of files and/or directories present in filtered file list.
//!
bool nav_filterlist_nb_ex( fl_type_t fl_type, const FS_STRING sz_filterext, uint16_t* p_total, uint8_t retry )
{
static uint16_t u16_save_position;
bool b_is_dir;
// save current position
if( *p_total==(uint16_t) -1 )
{
u16_save_position = fs_g_nav.u16_pos_filterlist;
// Reset position
if ( !nav_filterlist_reset())
return true;
if (fl_type == FL_DIR)
nav_filelist_single_enable(FS_DIR);
else if (fl_type == FL_FILE)
nav_filelist_single_enable(FS_FILE);
*p_total = 0;
}
// Scan all
while( nav_filelist_set( 0, FS_FIND_NEXT ) )
{
b_is_dir = nav_file_isdir();
// Check if its a file for FL_FILE mode
if (fl_type == FL_FILE && b_is_dir)
{
if (!update_counter(&retry))
return false;
continue;
}
// Check if its a directory for FL_DIR mode
if (fl_type == FL_DIR && !b_is_dir)
{
if (!update_counter(&retry))
return false;
continue;
}
// If the selection is on a file
if (!b_is_dir)
{
// Check the extension of the file
if (!((sz_filterext)?nav_file_checkext(sz_filterext):nav_file_checkext(fs_g_nav.sz_filterext)))
if (!update_counter(&retry))
return false;
}
(*p_total)++;
if (!update_counter(&retry))
return false;
}
nav_filelist_single_disable();
// Restore previous position
if ( u16_save_position != FS_NO_SEL )
{
nav_filterlist_reset();
}else{
// After operation, there are a file selected
nav_filterlist_goto( u16_save_position );
}
return true;
}
//! This function adds files in play list
//!
//! @param sz_filterext add file only corresponding to the extension filter
//! @param u8_mode PL_ADD_FILE, PL_ADD_DIR, PL_ADD_SUBDIR
//!
//! @return false in case of error, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
//! @verbatim
//! It is possible to select a file or all files in a directory
//! @endverbatim
//!
bool pl_add( const FS_STRING sz_filterext , uint8_t u8_mode )
{
uint8_t nav_id_save;
uint8_t u8_folder_level;
if( !pl_main_modify() )
return false;
nav_id_save = nav_get();
// Check last character of file
nav_select( FS_NAV_ID_PLAYLIST );
if( 0!=nav_file_lgt() )
{
#if( PL_UNICODE == true)
file_string_unicode();
file_seek( 2, FS_SEEK_END);
if( '\n' != file_getc())
{
file_seek( 2, FS_SEEK_END);
file_putc('\n');
}
file_string_ascii();
#else
file_seek( 1, FS_SEEK_END);
if( '\n' != file_getc())
{
file_seek( 1, FS_SEEK_END);
file_putc('\n');
}
#endif
}
nav_select( nav_id_save );
// Get path of play list file and check with current to create a relative path
if( PL_ADD_FILE == u8_mode )
goto pl_add_file;
// Add all files valid in current dir
u8_folder_level = 0;
nav_filelist_reset();
while(1)
{
while(1)
{
if( nav_filelist_set( 0 , FS_FIND_NEXT ) )
break; // a next file and directory is found
// No other dir or file in current dir then go to parent dir
if( 0 == u8_folder_level )
goto pl_add_end; // end of ADD
// Remark, nav_dir_gotoparent() routine go to in parent dir and select the children dir in list
u8_folder_level--;
if( !nav_dir_gotoparent() )
return false;
}
if( nav_file_isdir())
{
if( PL_ADD_SUBDIR == u8_mode )
{ // Enter in sub dir
if( !nav_dir_cd())
return false;
u8_folder_level++;
}
}
else
{
pl_add_file:
if( nav_file_checkext( sz_filterext ) )
{
// It is a valid file
// Get name of current file
#if( (FS_ASCII == true) && (FS_UNICODE == true) && (PL_UNICODE == false) )
nav_string_ascii();
#endif
nav_getcwd( (FS_STRING)pl_cache_path, PL_CACHE_PATH_MAX_SIZE, true );
#if( (FS_ASCII == true) && (FS_UNICODE == true) && (PL_UNICODE == false) )
nav_string_unicode();
#endif
// Write path in file list
nav_select( FS_NAV_ID_PLAYLIST );
#if( PL_UNICODE == true)
file_string_unicode();
#endif
if( file_puts(pl_cache_path))
file_putc('\n');
#if( PL_UNICODE == true)
file_string_ascii();
#endif
nav_select( nav_id_save );
pl_g_u16_list_size++;
}
if( PL_ADD_FILE == u8_mode )
goto pl_add_end;
} // if dir OR file
} // end of first while(1)
pl_add_end:
// Go to beginning of file AND no file selected
nav_select( FS_NAV_ID_PLAYLIST );
file_seek( 0 , FS_SEEK_SET );
pl_g_u16_list_sel = 0;
nav_select( nav_id_save );
return true;
}
//! This function jumps to the next or previous file in file list included in directories
//!
//! @param b_direction jump direction (FS_FIND_NEXT or FS_FIND_PREV)
//! @param options define extra modes for this function
//!
//! @return the status of the action
//!
//! @verbatim
//! This routine is not authorized then a play list file is opened
//! When the random is ON, the direction is ignored
//! @endverbatim
//!
Navauto_mov_state navauto_mov_explorer( bool b_direction, navauto_mov_options_t options )
{
Navauto_mov_state state;
uint16_t u16_mov_pos = 0;
size_t nb_loops = 1;
// Make sure the selection is different from the previous one
// This should be useful only well shuffle_set == true
uint16_t u16_previous_pos = g_navauto_u16_pos;
// Reset the bitfield status
memset(&bitfield_status, 0, sizeof(bitfield_status));
// Random implementation
if (g_navauto_rand == NAVAUTO_RAND_ON)
{
// If shuffle is set for the first time then go to the beginning of the list
if (shuffle_set)
{
if (options & NAVAUTO_MOV_OPTS_STAY_CURRENT_DIR)
{
navauto_mov_explorer_select_limit_file_cur_folder(FS_FIND_NEXT);
g_navauto_u16_pos = 0;
g_navauto_u16_nb = 1;
while(nav_filelist_set(0, FS_FIND_NEXT))
{
if (!nav_file_checkext(g_navauto_filter))
continue;
g_navauto_u16_nb++;
}
navauto_mov_explorer_select_limit_file_cur_folder(FS_FIND_NEXT);
}
else
{
navauto_mov_explorer_limit(FS_FIND_NEXT);
// Point on the 1srt file
g_navauto_u16_pos = 0;
navauto_mov_explorer_rec(FS_FIND_NEXT, NAVAUTO_MOV_OPTS_NONE);
// Reinitialize the counter to make sure we will count all the files
g_navauto_u16_nb = 0;
}
shuffle_set = false;
}
u16_mov_pos = navauto_rand_choose(g_navauto_u16_pos, g_navauto_u16_nb);
// To avoid end of loop (NAVAUTO_MOV_OK_LOOP state)
b_direction = (u16_mov_pos > g_navauto_u16_pos)?FS_FIND_NEXT:FS_FIND_PREV;
nb_loops = (u16_mov_pos > g_navauto_u16_pos)?(u16_mov_pos-g_navauto_u16_pos):(g_navauto_u16_pos-u16_mov_pos);
}
// This loop is done, so that the random method is not a problem once a NAVAUTO_MOV_OPTS_STAY_CURRENT_DIR option is set to 1.
while(nb_loops--)
{
// Compute the recursive function
state.status = navauto_mov_explorer_rec(b_direction, options);
// Check its returning state
switch(state.status)
{
// If the function is at the end of the loop
case NAVAUTO_MOV_OK_LOOP:
// Update g_navauto_u16_pos counter
if (b_direction == FS_FIND_NEXT)
{
g_navauto_u16_nb = g_navauto_u16_pos + 1;
g_navauto_u16_pos = 0;
}
else
g_navauto_u16_pos = g_navauto_u16_nb - 1;
// Means it reached the tail or the beginning of the playlist.
// Then set the pointer to a limit of the "playlist"
// should be at the beginning for a NEXT and at end for a PREVIOUS command.
switch(limit_process_fct[(b_direction == FS_FIND_NEXT)?1:0](b_direction))
{
case NAVAUTO_MOV_EXPLORER_RECURSIVE:
// If it returns NAVAUTO_MOV_OK_LOOP, it means it reached two times a row the end of the playlist,
// therefore, this is an empty disk!
if (navauto_mov_explorer_rec(b_direction, options) == NAVAUTO_MOV_OK_LOOP)
{
state.bitfield.all = bitfield_status.all;
state.status = NAVAUTO_MOV_EMPTY;
return state;
}
break;
default:
break;
}
state.bitfield.all = bitfield_status.all;
state.status = NAVAUTO_MOV_OK_LOOP;
return state;
// If a file is correctly selected
case NAVAUTO_MOV_OK:
// Update g_navauto_u16_pos counter
g_navauto_u16_pos += (b_direction == FS_FIND_NEXT)?(1):(-1);
// if the selection is the same as last one, then get next file
if (g_navauto_rand == NAVAUTO_RAND_ON && u16_previous_pos == g_navauto_u16_pos && !nb_loops && g_navauto_u16_nb > 1)
{
return navauto_mov_explorer(b_direction, options);
}
break;
default:
state.bitfield.all = bitfield_status.all;
return state;
}
}
state.status = NAVAUTO_MOV_OK;
state.bitfield.all = bitfield_status.all;
return state;
}
//! This function opens the current selected file in the current navigator in read only mode.\n
//! It is a non blocking-function that returns every n-file counted.
//!
//! @param u16_n The number of files to look for before returning.\n
//! If it contains the special value of 0, then, it will not
//! process the count of link inside the playlist.
//!
//! @return false in case of error, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
bool pl_main_open_non_blocking(uint16_t u16_n)
{
ai_async_context_t ctx;
uint16_t u16_current_count = 0;
static uint8_t nav_id_save;
typedef enum
{
STATE_INITIALIZATION = 0,
STATE_GET_LINK_COUNT,
STATE_INIT_PLAYLIST_CONTEXT,
STATE_END
} state_t;
// If false, means it is the first call
if (!ai_async_context_pop(&ctx))
ctx.state = (state_t) STATE_INITIALIZATION;
// By default set the status to DONE
ctx.status = CMD_DONE;
switch((state_t) ctx.state)
{
// Initialization
case STATE_INITIALIZATION:
if (pl_main_isopen())
return false;
// Select the play list file in "play list" navigator
// Save current navigator
nav_id_save = nav_get();
nav_copy(FS_NAV_ID_PLAYLIST);
nav_select(FS_NAV_ID_PLAYLIST);
// Make sure the selected file is a playlist
if (nav_file_checkext("m3u"))
pl_g_list_type = E_PL_M3U;
else if (nav_file_checkext("pls"))
pl_g_list_type = E_PL_PLS;
else if (nav_file_checkext("smp"))
pl_g_list_type = E_PL_SMP;
else
{
ctx.status = CMD_EXECUTING;
ctx.state = (state_t) STATE_END;
break;
}
// Open list
if (!reader_txt_open(true))
{
ctx.status = CMD_EXECUTING;
ctx.state = (state_t) STATE_END;
break;
}
pl_g_u16_list_size = 0;
ctx.status = CMD_EXECUTING;
if (u16_n)
ctx.state = (state_t) STATE_GET_LINK_COUNT;
else
ctx.state = (state_t) STATE_INIT_PLAYLIST_CONTEXT;
break;
case STATE_GET_LINK_COUNT:
u16_current_count = 0;
nav_select(FS_NAV_ID_PLAYLIST);
while (!file_eof() && u16_current_count < u16_n)
{
if (pl_main_readline(PL_MAIN_READLINE_OPT_CHECKLINE, 0, NULL, NULL))
pl_g_u16_list_size++;
// Check if an error occurred during the reading
else if (fs_g_status == FS_ERR_FS)
{
// Error file system
ctx.status = CMD_EXECUTING;
ctx.state = (state_t) STATE_END;
break;
}
u16_current_count++;
}
ctx.status = CMD_EXECUTING;
if (file_eof())
ctx.state = (state_t) STATE_INIT_PLAYLIST_CONTEXT;
break;
case STATE_INIT_PLAYLIST_CONTEXT:
nav_select(FS_NAV_ID_PLAYLIST);
// Go to at the beginning of text file
reader_txt_beg();
// Don't select a file
pl_g_u16_list_sel = 0;
// Play list file is opened
pl_g_list_is_open = true;
// Re select the previous navigator
nav_select(nav_id_save);
nav_filelist_reset();
break;
case STATE_END:
// Re select the previous navigator
nav_select(nav_id_save);
break;
}
if (ctx.status == CMD_EXECUTING)
{
if (!ai_async_context_push(&ctx))
return false;
}
return pl_g_list_is_open;
}
