NAME

       libmtp - playlists

   Functions
       LIBMTP_playlist_t * LIBMTP_new_playlist_t (void)
       void LIBMTP_destroy_playlist_t (LIBMTP_playlist_t *)
       LIBMTP_playlist_t * LIBMTP_Get_Playlist_List (LIBMTP_mtpdevice_t *)
       LIBMTP_playlist_t * LIBMTP_Get_Playlist (LIBMTP_mtpdevice_t *, uint32_t const)
       int LIBMTP_Create_New_Playlist (LIBMTP_mtpdevice_t *, LIBMTP_playlist_t *const)
       int LIBMTP_Update_Playlist (LIBMTP_mtpdevice_t *, LIBMTP_playlist_t *const)
       int LIBMTP_Set_Playlist_Name (LIBMTP_mtpdevice_t *, LIBMTP_playlist_t *, const char *)

Detailed Description

Function Documentation

   int LIBMTP_Create_New_Playlist (LIBMTP_mtpdevice_t * device, LIBMTP_playlist_t *const
       metadata)
       This routine creates a new playlist based on the metadata supplied. If the tracks field of
       the metadata contains a track listing, these tracks will be added to the playlist.

       Parameters:
           device a pointer to the device to create the new playlist on.
           metadata the metadata for the new playlist. If the function exits with success, the
           playlist_id field of this struct will contain the new playlist ID of the playlist.

           • metadata->parent_id should be set to the parent (e.g. folder) to store this track
             in. Since some devices are a bit picky about where files are placed, a default
             folder will be chosen if libmtp has detected one for the current filetype and this
             parameter is set to 0. If this is 0 and no default folder can be found, the file
             will be stored in the root folder.
           • metadata->storage_id should be set to the desired storage (e.g. memory card or
             whatever your device presents) to store this track in. Setting this to 0 will store
             the track on the primary storage.
       Returns:
           0 on success, any other value means failure.
       See also:
           LIBMTP_Update_Playlist()
           LIBMTP_Delete_Object()
       References LIBMTP_mtpdevice_struct::default_music_folder,
       LIBMTP_mtpdevice_struct::default_playlist_folder, get_playlist_extension(),
       LIBMTP_playlist_struct::name, LIBMTP_playlist_struct::no_tracks,
       LIBMTP_playlist_struct::parent_id, LIBMTP_playlist_struct::playlist_id,
       LIBMTP_playlist_struct::storage_id, LIBMTP_playlist_struct::tracks, and
       LIBMTP_mtpdevice_struct::usbinfo.
   void LIBMTP_destroy_playlist_t (LIBMTP_playlist_t * playlist)
       This destroys a playlist metadata structure and deallocates the memory used by it,
       including any strings. Never use a track metadata structure again after calling this
       function on it.
       Parameters:
           playlist the playlist metadata to destroy.
       See also:
           LIBMTP_new_playlist_t()
       References LIBMTP_playlist_struct::name, and LIBMTP_playlist_struct::tracks.
   LIBMTP_playlist_t* LIBMTP_Get_Playlist (LIBMTP_mtpdevice_t * device, uint32_t const plid)
       This function retrieves an individual playlist from the device.
       Parameters:
           device a pointer to the device to get the playlist from.
           plid the unique ID of the playlist to retrieve.
       Returns:
           a valid playlist metadata post or NULL on failure.
       See also:
           LIBMTP_Get_Playlist_List()
       References LIBMTP_new_playlist_t(), LIBMTP_mtpdevice_struct::params, and
       LIBMTP_mtpdevice_struct::usbinfo.
   LIBMTP_playlist_t* LIBMTP_Get_Playlist_List (LIBMTP_mtpdevice_t * device)
       This function returns a list of the playlists available on the device. Typical usage:
       Parameters:
           device a pointer to the device to get the playlist listing from.
       Returns:
           a playlist list on success, else NULL. If there are no playlists on the device, NULL
           will be returned as well.
       See also:
           LIBMTP_Get_Playlist()
       References LIBMTP_new_playlist_t(), LIBMTP_playlist_struct::name,
       LIBMTP_playlist_struct::next, LIBMTP_playlist_struct::no_tracks,
       LIBMTP_mtpdevice_struct::params, LIBMTP_playlist_struct::parent_id,
       LIBMTP_playlist_struct::playlist_id, LIBMTP_playlist_struct::storage_id,
       LIBMTP_playlist_struct::tracks, and LIBMTP_mtpdevice_struct::usbinfo.
   LIBMTP_playlist_t* LIBMTP_new_playlist_t (void)
       This creates a new playlist metadata structure and allocates memory for it. Notice that if
       you add strings to this structure they will be freed by the corresponding
       LIBMTP_destroy_playlist_t operation later, so be careful of using strdup() when assigning
       strings, e.g.:
       LIBMTP_playlist_t *pl = LIBMTP_new_playlist_t();
       pl->name = strdup(str);
       ....
       LIBMTP_destroy_playlist_t(pl);
       Returns:
           a pointer to the newly allocated metadata structure.
       See also:
           LIBMTP_destroy_playlist_t()
       References LIBMTP_playlist_struct::playlist_id.
       Referenced by LIBMTP_Get_Playlist(), and LIBMTP_Get_Playlist_List().
   int LIBMTP_Set_Playlist_Name (LIBMTP_mtpdevice_t * device, LIBMTP_playlist_t * playlist, const
       char * newname)
       This function renames a single playlist object file holder. This simply means that the
       PTP_OPC_ObjectFileName property is updated, if this is supported by the device. The
       playlist filename should nominally end with an extension like '.pla'.
       NOTE: if you want to change the metadata the device display about a playlist you must not
       use this function, use LIBMTP_Update_Playlist() instead!
       Parameters:
           device a pointer to the device that contains the file.
           playlist the playlist metadata of the playlist to rename. On success, the name member
           is updated. Be aware, that this name can be different than newname depending of device
           restrictions.
           newname the new name for this object.
       Returns:
           0 on success, any other value means failure.
       See also:
           LIBMTP_Update_Playlist()
       References LIBMTP_playlist_struct::name, and LIBMTP_playlist_struct::playlist_id.
   int LIBMTP_Update_Playlist (LIBMTP_mtpdevice_t * device, LIBMTP_playlist_t *const metadata)
       This routine updates a playlist based on the metadata supplied. If the tracks field of the
       metadata contains a track listing, these tracks will be added to the playlist in place of
       those already present, i.e. the previous track listing will be deleted. For Samsung
       devices the playlist id (metadata->playlist_id) is likely to change.
       Parameters:
           device a pointer to the device to create the new playlist on.
           metadata the metadata for the playlist to be updated. notice that the field
           playlist_id must contain the apropriate playlist ID. Playlist ID be modified to a new
           playlist ID by the time the function returns since edit-in-place is not always
           possible.
       Returns:
           0 on success, any other value means failure.
       See also:
           LIBMTP_Create_New_Playlist()
           LIBMTP_Delete_Object()
       References LIBMTP_playlist_struct::name, LIBMTP_playlist_struct::no_tracks,
       LIBMTP_playlist_struct::playlist_id, LIBMTP_playlist_struct::tracks, and
       LIBMTP_mtpdevice_struct::usbinfo.

Author

       Generated automatically by Doxygen for libmtp from the source code.