From: Jan K. <JKubitschek@JakPod.de> - 2009-08-03 11:17:20
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Christophe Fergeau schrieb: > Hi, > > 2009/8/3 Jan Kubitschek <JKu...@ja...>: >> because of www.iPodLinux.org is still down - my question to the experts >> here. >> I have found a new MHOD (type 54). Knows someone here details about this >> MHOD-type? > > On which device did you encounter it? I don't know what it is, there's > a (slow) mirror of the itunesdb stuff at > http://banshee-project.org/~gburt/itunesdb.html > > Christophe Hi, i have found this MHOD on an iPod Nano (latest Gerneration). It seems that the header length is always 24 and the total length is 32. Here some examples: Header section: (00-04) identifier: mhod (04-08) headerLength: 24 (08-12) totalLength: 32 (12-16) type: 54 (16-20): 0 (20-24): 0 Data section (24-32): 2A64D67503192FD3 ------------------------- Header section: (00-04) identifier: mhod (04-08) headerLength: 24 (08-12) totalLength: 32 (12-16) type: 54 (16-20): 0 (20-24): 0 Data section (24-32): 1BD9543982D75C5D I have figured the following out: - the MHOD of type 54 is always a child of a playlist (MHYP) - the data section is always 8 Byte long - the data from the data section corresponds with the "dbid" (offset 112) of an MHIT (track item) - it seems that the data section always contains the "dbid" of the *first* track in that playlist But i have no idea what this is for? Kind regards, Jan. PS: If one is interested in: Offset 32-40 of an MHIA (album item) also contains an dbid. This seems also still not documented... |