Feature Request: Dump only DWRO named image files

[duracell80]

It would be very helpful to reduce the number of writes to an SSD drive when using the --dump-aas-files flag. Excluding station graphics, album art and traffic would really help clean up the directory. The weather radar images are updated roughly every 10 minutes OTA but get overwritten a few times in that time. Same for traffic, if there was a way to filter and dump only the files needed that would really help.

A selective filter:

• Traffic + Weather Only
• Weather Only
• Traffic Only
• Station Graphics Only
• All

An example of the filename I see for radar:
1569_DWRO_******_rev03_20230215_2200_0621.png

Here I'm dumping the files and sending the audio output to null.

$DIR_BASE=/tmp/nrsc5
$DEV=0
$BAND=0
$FREQUENCY=107.5

nrsc5 -o - -d $DEV_IDEX -q --dump-aas-files $DIR_BASE $FREQUENCY $BAND > /dev/null 2>&1 &

I can then collect the overlays from the /tmp/nrsc5 directory into my home and into an animation video or gif with ffmpeg.