DATA DISPLAY GROUP
Manual
6.3.3
Content Update
After setting up the FTP server and the ArtistaMEDIA board properly as described in the two
sections above, the media files on the ArtistaMEDIA board can be updated simply by updating the
files on the FTP server. ArtistaMEDIA will periodically check the FTP directories with the time
interval configured in the Web Frontend for any changes and will download the new playlist and
media files automatically.
ArtistaMEDIA uses the following sequence for content update:
Check the size and date of the
playlist.xml
file on the FTP server. If it is different to the
version which currently used, download the new one
Parse all media file names in the new playlist
Check, which media files are new or changed and thus not available on the local storage yet
Download all new media files in the background and store them locally
If download is completed, stop the current play back
Delete all outdated media files from the local storage
Start play back with the new playlist again
ArtistaMEDIA handles the auto content update by applying the rules mentioned below:
The playlist must be called “
playlist.xml
” (case sensitive) and must be valid (refer to
example playlist)
To decide, if a playlist is new, ArtistaMEDIA compares the date and the size in bytes of the
“
playlist.xml
” file on the FTP server and the one currently used
ArtistaMEDIA checks the available space on the local storage automatically:
o
If the new playlist and the associated media files exceed the available space on the
local storage, the new playlist will be ignored
o
If the files currently stored on the local storage of ArtistaMEDIA plus the new files
which should be downloaded according to the new
playlist.xml
are exceeding the
available space on the local storage, the new playlist will be ignored
If the new playlist contains media files, which are not available on the FTP server nor on the
local storage, the new playlist will be ignored
ArtistaMEDIA detects changes in the file name and the file size of the media files on the FTP
server
If there is no file in the directory on the FTP server, ArtistaMEDIA continues to play the
current playlist
First check for new files on the FTP server happens immediately after power on of the
ArtistaMEDIA board
Consecutive checks will be done periodically with the time interval specified in the Web
Frontend
ArtistaMEDIA
Version 1.12
05.10.2011
Page 9 of 49
