bool pl_main_save( void )
{
_MEM_TYPE_SLOW_ Fs_index index;
uint8_t nav_id_save;
uint16_t u16_pos;
// Check if the play list file is opened and modified
if( !pl_main_isopen() )
return false;
if( !pl_g_list_is_modify )
return true;
pl_g_list_is_modify = false;
// Check if a undo file exists
if( !pl_g_list_undo )
return true;
// Remove original copy of play list file
nav_id_save = nav_get();
nav_select( FS_NAV_ID_PLAYLIST );
u16_pos = pl_g_u16_list_sel; // Save position in play list
file_close(); // Close list
index = nav_getindex(); // Save the pointer on play list file
pl_g_list_is_open = false;
if( nav_gotoindex( ©file_index ) ) // Go to the copy of file
nav_file_del( true ); // Remove the copy
nav_gotoindex( &index ); // Re select play list file
pl_main_open( true ); // Re open play list file
pl_nav_setpos(u16_pos); // Restore position in play list
nav_select( nav_id_save );
return true;
}
//! This function creates a new empty play list file
//!
//! @param sz_name contains the file name (ASCII or UNICODE )
//! @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_new( const FS_STRING sz_name , bool b_undo )
{
if( pl_main_isopen() )
return false;
// Create an empty text file
if( !reader_txt_new( sz_name, UNI_TYPE_UTF16BE ))
return false;
reader_txt_close();
// Load the play list file
return pl_main_open( b_undo );
}
//! 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;
}
//! This function creates a copy of the play list in case of a restore action
//!
//! @return false in case of error, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
bool pl_main_modify( void )
{
_MEM_TYPE_SLOW_ uint8_t name_copyfile[]="~copy.m3u";
_MEM_TYPE_SLOW_ Fs_index index;
uint8_t nav_id_save;
uint16_t u16_pos;
uint8_t status;
bool b_copy_finish = false;
if( !pl_main_isopen() )
return false;
if( pl_g_list_is_modify )
return true;
// If an error occurs during copy process then the play list file is set in read only mode
fs_g_status = FS_ERR_PL_READ_ONLY;
if( pl_g_list_is_readonly )
return false;
if( !pl_g_list_undo )
{
pl_g_list_is_modify = true;
return true;
}
// Save information about current play list file
nav_id_save = nav_get();
nav_select( FS_NAV_ID_PLAYLIST );
u16_pos = pl_g_u16_list_sel; // Save position in play list
file_close(); // Close list
pl_g_list_is_open = false;
index = nav_getindex(); // Get pointer on play list
// Copy play list file in a temporary file
#if( (FS_ASCII == true) && (FS_UNICODE == true) )
nav_string_ascii(); // copy file name stored in ASCII
#endif
if( !nav_file_copy())
goto pl_main_modify_end;
if( !nav_file_paste_start( name_copyfile ) )
{
if( FS_ERR_FILE_EXIST != fs_g_status)
goto pl_main_modify_end;
// File exist then delete
if( !nav_file_del(true) )
goto pl_main_modify_end;
// Retry paste
if( !nav_file_paste_start( name_copyfile ) )
goto pl_main_modify_end;
}
// Run paste
do{
status = nav_file_paste_state(false); // Copy running
}while( COPY_BUSY == status );
if( COPY_FINISH != status )
goto pl_main_modify_end;
// Save pointer on copy file
copyfile_index = nav_getindex();
b_copy_finish = true;
pl_main_modify_end:
// Restore the play list file
#if( (FS_ASCII == true) && (FS_UNICODE == true) )
nav_string_unicode();
#endif
nav_gotoindex( &index ); // Go to original play list file
pl_main_open( true ); // Re open play list file
pl_g_list_is_modify = b_copy_finish;
nav_select( nav_id_save );
pl_nav_setpos(u16_pos); // Restore position in play list
return pl_g_list_is_modify;
}
