Extend coverlovin a bit

[Thomas Funk]

Hi all,

I've adjusted the tool a little bit. Because I need these changes for
a music player applet in Fvwm-Nightshade. If you like it feel free to use it
or some parts of the code. Unfortunately the dependencies are increase. Now
Mutagen AND ImageMagick (for converting) is needed.

Description of changes:
1) I changed the name creation because if you have a directory with
   mixed songs from different artists 'cover.jpg' isn't ideal. Now you can
   enter a list of keywords. Possible keys are: artist, album, title. While
   processing the cover name will be created from the tags. As a delimiter
   the '-' is used but can be changed with '--delimiter'.
2) While processing the song will be checked if an embedded cover is available.
   If so it will extracted and saved/converted to the correct image format
   and the used image size.
3) coverlovin processes by default only 1 directory but can be extended with
   '--depth'. 0 is unlimited.
4) Now it is possible to scan only one file instead of directories. For
   directory/ies '-d' is used and '-f' for file.
5) Some users like to see which version they use. I implemented this, too ^^

The --help output:
Usage: coverlovin.py [options]

Options:
  -h, --help show this help message and exit
  -s SIZE, --size=SIZE file size: small, medium, or large (default: medium)
  -i IMAGE, --image=IMAGE
                        image format, eg jpg, png, gif (default: jpg)
  -n NAME, --name=NAME cover image file name. Comma seperated key list. Keys:
                        artist,album,title (default: artist,album)
  --delimiter=DELIMITER
                        cover image file name delimiter (default: -)
  -r REFERER, --referer=REFERER
                        referer url (default:
                        https://launchpad.net/coverlovin)
  -c COUNT, --count=COUNT
                        image lookup count (default: 8))
  -o, --overwrite overwrite (default False)
  -f FILE, --file=FILE file to scan
  -d DIR, --directory=DIR
                        directory to scan
  --depth=DEPTH directory depth to scan (default 1). 0 is unlimited
  --debug show debug (default False)
  --version show version

If you have ideas, improvements or find a bug feel free to contact me :-)

Best Regards,
Thomas

[abrsdk (abrsdk)]

Those are some really nice features! I was using clementine's extract cover option to do #2 but now it will be much easier. But I would love to see album art fetching from discogs if that's possbile

[Thomas Funk (t-funk)]

discogs has a python library for this but it's only available via Github
( https://github.com/discogs/discogs_client ) and coverlovin should work
on all distributions. Ok, with an inquiry whether discogs is installed it
can be implemented ...

Unfortunately I haven't had any time to implement it because I am working
on the next release of Fvwm-Nightshade. Perhaps in 2 or 3 months ...

Sorry.

Attached is the newest version of my coverlovin with the following extra
features:

- In the file mode it can print out a string with informations of the
  song. Useful for a player backend.
- If 'Artist' and 'Album' not available in the Id3 tags no search will
  be done.
- The covers can be converted to an external directory.
- some bugfixes