scripts/multimedia/README

# just-play-something.sh #

As its name indicates, the main goal of just-play-something.sh is to put
some music on. Just anything. What the name doesn't indicate is that the
music is played by MPD.

Its use case is to be binded to a physical button of my router (which is
also my music box), so that I don't have to start a device with an MPD
client to start music (this is especially useful when I first wake up in
the morning). Therefore, it is written with portability in mind and
doesn't use any utility that might not be present on embedded systems.
Here are the required dependencies (beside MPD itself and its
command-like client, mpc):
- time
- ps
- date
- md5sum
- sed

What this script will do for you:
- first of all, if the MPD daemon looks down, it will be restarted;
  then,
- if there are songs in the playlist but the playback is paused, it will
  unpause;
- if there are songs in the playlist but the playback is stopped, it
  will start playing the playlist from the begining;
- if there are no songs in the playlist, it will add a random album from
  your library and play it;
- if music is already playing, it will be paused.

Tip: you can bind a short button press to just-play-something, and a
long press (or another button) to mpc clear && just-play-something, so
that if you don't like what is currently in the playlist, you can force
playing a random album with a long press.


# metflac-field2field.sh #

[Français ci-dessous.]

metaflac-field2field.sh uses metaflac to process field to field
copy/move on FLAC file metadatas.

Invocation:

  metaflac-field2field.sh <ACTION> <SRC_FIELD> <DST_FIELD> <FILE.flac> \
    [ <FILE2.flac> [...] ]

<ACTION> is the action to perform on the fields, amongst “copy”, “move”,
“rmcopy” and “mvcopy”:
- copy: each occurrence of SRC_FIELD is duplicated to create an
  occurrence of DST_FIELD; all the existing occurrences of SRC_FIELD and
  DST_FIELD are kept.
- move: each occurrence of SRC_FIELD is moved to create an occurrence of
  DST_FIELD; the existing occurrences of DST_FIELD are kept.
- rmcopy: the existing occurrences of DST_FIELD are deleted, then each
  occurrence of SRC_FIELD is duplicated to create an occurrence of
  DST_FIELD; the occurrences of SRC_FIELD are kept.
- rmmove: the existing occurrences of DST_FIELD are deleted, then each
  occurrence of SRC_FIELD is moved to create an occurrence of DST_FIELD.

<SRC_FIELD> is the action's source field.

<DST_FIELD> is the action's destination field.

Finally, the file(s) on which the action has to be run are specified at
the end of the command line.

----

metaflac-field2field.sh utilise metaflac pour effectuer des actions de
copie ou déplacement de champ à champ sur les fichiers FLAC.

Invocation du script :

  metaflac-field2field.sh <ACTION> <SRC_FIELD> <DST_FIELD> <FILE.flac> \
    [ <FILE2.flac> [...] ]

<ACTION> est l'action à effectuer sur les champs, parmi « copy »,
« move », « rmcopy » et « mvcopy » :
- copy : chaque occurrence de SRC_FIELD est dupliquée pour créer une
  occurrence de DST_FIELD ; toutes les occurrences existantes de
  SRC_FIELD et de DST_FIELD sont conservées.
- move : chaque occurrence de SRC_FIELD est déplacée pour créer une
  occurrence de DST_FIELD ; les occurrences existantes de DST_FIELD sont
  conservées.
- rmcopy : les occurrences existantes de DST_FIELD sont supprimées, puis
  chaque occurrence de SRC_FIELD est dupliquée pour créer une occurrence
  de DST_FIELD ; les occurrences de SRC_FIELD sont conservées.
- rmmove : les occurrences existantes de DST_FIELD sont supprimées, puis
  chaque occurrence de SRC_FIELD est déplacée pour créer une occurrence
  de DST_FIELD.

<SRC_FIELD> est le champ source de l'action.

<DST_FIELD> est le champ de destination de l'action.

On spécifie ensuite un ou plusieurs fichier sur lequel ou lesquels
effectuer l'action.