deb http://ppa.launchpad.net/glaubitz/linux-minidisc/ubuntu karmic main

sudo apt-get update && apt-get dist-upgrade

22:41 <@cbmuser> twice11: could you explain briefly how we would implement MP3-write support?
22:43 <@cbmuser> it is just a matter of using the xor-algorithm to encode the tracks, right?
22:43 <@cbmuser> with the help of libmad to read the frames from file
22:44 <@cbmuser> I'm trying to sketch the flowchart in my head
23:18 <@twice11> cbmuser: You need to
23:19 <@twice11> 1) cut the mp3 file into frames.
23:19 <@twice11> 2) gather the frames into blocks of 16KB - 64 Byte.
23:19 <@twice11> 3) obfuscate these blocks with the track/disc specific MP3 encoding key
23:20 <@twice11> 4) Write these blocks into one or more contigous chunks in the ATDATAxx.HMA file
23:20 <@twice11> 5) Write fragment entries for the contiguos chunks into the fragment table in the TRKIDXxx.HMA file
23:21 <@twice11> 6) Write a track entry that points to the first fragment entry (they are chained).
23:24 <@twice11> One should try to make steps 4 to 6 as atomic as possible.
23:26 <@twice11> The sony stuff does it in a way that's not possible on just file-system level access.