1) correct a bug with the mdat atom.
Sometimes, the metadata can be at the end, after the audio
Demo :
get any music file and strip the metadata
convert it to m4a with ffmpeg
analyse it with MusicBrainz Picard
et voila, you have the metadata at the end.
Example of structure of a m4a created that way;
https://www.dropbox.com/s/602yivdstan7506/atom.txt?dl=0
2) add support for the "----" tag
See http://atomicparsley.sourceforge.net/mpeg-4files.html
It gives access to the tags created by MusicBrainz Picard
I hacked readTextWithDescrFrame() and readTFrame() to generalize them
to other case (presence or not of a language and whether or not the
data part is encoded (URL are not)
This patch depend of 3b7a3d548500bd10afa63819a9904ac12e15cdc5 since I found the
bug while developping this patch
Sometimes, we can have this configuration :
description 00 00 00 data (with delim = [00 00])
with splitN, we make the separation at the first 00 00 :
[description, 00 data]
But in fact, we must make the separation one byte later
[description 00, data]
Xavier Henner