Playlist Class Reference

Public Types
enum	PlayMode { PlayModeNormal = 0 , PlayModeShuffle , NumOfPlayMode }
enum	RepeatMode { RepeatModeOff = 0 , RepeatModeOn , NumOfRepeatMode }
enum	ListType {   ListTypeAllTrack = 0 , ListTypeArtist , ListTypeAlbum , ListTypeUser ,   NumOfListType }

Public Member Functions
	Playlist (FAR const char *file_name)
	Playlist Constructor. More...
	~Playlist ()
	Playlist Destructor.
bool	init (const char *playlist_path)
	Init playlist. More...
bool	setPlayMode (PlayMode play_mode)
	Set play mode. More...
bool	setRepeatMode (RepeatMode repeat_mode)
	Set repeat mode. More...
bool	select (ListType type, FAR const char *key_str)
	Select playlist to play. More...
bool	updatePlaylist (ListType type, FAR const char *key_str)
	Update playlist. More...
bool	addTrack (FAR const char *key_str, int track_no)
	Add track to playlist. More...
bool	removeTrack (FAR const char *key_str, uint32_t remove_pos)
	Remove track from playlist. More...
bool	updateTrackDb (const char *audiofile_root_path)
	Update track database. More...
bool	deleteAll (void)
	Delete all playlist. More...
bool	deleteOne (ListType type, FAR const char *key_str)
	Delete playlist. More...
bool	getNextTrack (FAR Track *track)
	Get next track. More...
bool	getPrevTrack (FAR Track *track)
	Get previous track. More...
bool	restart (void)
	Restart playlist. More...

Member Enumeration Documentation

PlayMode

enum PlayMode

Enumerator
PlayModeNormal	Normal play mode.
PlayModeShuffle	Shuffle play mode.

RepeatMode

enum RepeatMode

Enumerator
RepeatModeOff	Play all track at once.
RepeatModeOn	Play all track repeat.

ListType

enum ListType

Enumerator
ListTypeAllTrack	All track (which is written in playlist file) list.
ListTypeArtist	Artist categorized track list.
ListTypeAlbum	Album categorized track list.
ListTypeUser	User defined track list.

Constructor & Destructor Documentation

Playlist()

Playlist ( FAR const char *  file_name )

inline

Playlist Constructor.

Parameters

[in]

file_name

Playlist file name.

Member Function Documentation

init()

bool init

(

const char *

playlist_path

)

Init playlist.

Parameters

[in]

playlist_path

Path to playlist file

Return values

true	: success
false	: failure

setPlayMode()

bool setPlayMode

(

PlayMode

play_mode

)

Set play mode.

Parameters

[in]

play_mode

PlayModeNormal, PlayModeShuffle

Return values

true	: success
false	: failure

setRepeatMode()

bool setRepeatMode

(

RepeatMode

repeat_mode

)

Set repeat mode.

Parameters

[in]

repeat_mode

RepeatModeOff, RepeatModeOn

Return values

true	: success
false	: failure

select()

bool select	(	ListType	type,
		FAR const char *	key_str
	)

Select playlist to play.

Note

If type is ListTypeAllTrack, key_str is not cared.

Parameters

[in]	type	ListTypeAllTrack, ListTypeArtist, ListTypeAlbum, ListTypeUser
[in]	key_str	Key string to select playlist. Author name, album name, etc...

Return values

true	: success
false	: failure

updatePlaylist()

bool updatePlaylist	(	ListType	type,
		FAR const char *	key_str
	)

Update playlist.

Create or update playlist. Target playlist should be selected by parameters.

Note

If type is ListTypeAllTrack, key_str is not cared.

Parameters

[in]	type	ListTypeAllTrack, ListTypeArtist, ListTypeAlbum, ListTypeUser
[in]	key_str	Key string to filter playlist. Author name, album name, etc...

Return values

true	: success
false	: failure

addTrack()

bool addTrack	(	FAR const char *	key_str,
		int	track_no
	)

Add track to playlist.

Note

Target playlist is always user defined playlist(ListTypeUser).

Parameters

[in]	key_str	Key string to filter playlist. Author name, album name, etc...
[in]	track_no	Track number of which would like to add to playlist.

Return values

true	: success
false	: failure

removeTrack()

bool removeTrack	(	FAR const char *	key_str,
		uint32_t	remove_pos
	)

Remove track from playlist.

Note

Target playlist is always user defined playlist(ListTypeUser).

Parameters

[in]	key_str	Key string to filter playlist. Author name, album name, etc...
[in]	remove_pos	Track number of which would like to remove from playlist.

Return values

true	: success
false	: failure

updateTrackDb()

bool updateTrackDb

(

const char *

audiofile_root_path

)

Update track database.

Create or update all track playlist by tracks in path/to/.

Parameters

[in]

audiofile_root_path

Path to audio data file.

Return values

true	: success
false	: failure

deleteAll()

bool deleteAll

(

void

)

Delete all playlist.

Note

Delete playlist which is created internally. track database(***.csv) will not be deleted.

Return values

true	: success
false	: failure

deleteOne()

bool deleteOne	(	ListType	type,
		FAR const char *	key_str
	)

Delete playlist.

Parameters

[in]	type	ListTypeAllTrack, ListTypeArtist, ListTypeAlbum, ListTypeUser
[in]	key_str	Key string to filter playlist. Author name, album name, etc...

Return values

true	: success
false	: failure

getNextTrack()

bool getNextTrack

(

FAR Track *

track

)

Get next track.

Get next track in playlist which is selected by select().

Parameters

[out]

track

Track information

Return values

true	: success
false	: failure

getPrevTrack()

bool getPrevTrack

(

FAR Track *

track

)

Get previous track.

Get previous track in playlist which is selected by select().

Parameters

[out]

track

Track information

Return values

true	: success
false	: failure

restart()

bool restart

(

void

)

Restart playlist.

Restart from top of playlist.

Return values

true	: success
false	: failure

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The documentation for this class was generated from the following file:

• spresense/sdk/modules/include/audio/utilities/playlist.h