[DVDnav-discuss] libdvdread compatibility patches..
nicola.sabbi at poste.it
Wed Aug 20 20:05:00 CEST 2008
Il giorno mer, 20/08/2008 alle 13.12 +0900, Jorgen Lundman ha scritto:
> I used libdvdread-0.9.7 in my own project (llink) but since it appears
> that libdvdread has come to a stand-still, I have moved to use
> libdvdnav-4.2.1 instead, or rather, the dvdread inside libdvdnav. In
> future I will explore the additional features of libdvdnav to see what
> more I can do with it, but for now it was a simple transition.
> In aid of being backward compatible (so that I could move to using
> libdvdnav) I applied the 0.9.7 patches for the various *stat() API
> methods. This is so I can simulate "directory listing" of an ISO file.
> Patch 1: Add in DVDFileStat and "struct dvd_stat_t" for backward
> compatibility and maintaining portability.
please, post it
> Patch 2: I added a new dvd_input method for calling "unrar". This to
> allow my program to use libdvdread on .ISO files inside RAR archives. It
> uses a slightly patched "unrar" executable with a new -sk<offset> flag
> to specify starting seek position. It takes about two unrar spawns to
> "list" an ISO file, and on average, 2 unrar spawns to send a .VOB file.
> (Assuming VOB files are contiguous).
I don't like the idea of a decompression of any kind in libdvdread:
I don't see the purpose and I consider it belonging to an upper
layer library or application
> Patch 3: Add UDF2.50 support to read new BD5/9 disks.
> I have only done Patch 1 and Patch 2 so far, and I do not know if it is
> even worth me forwarding them to this list, since they are rather
> specialised for me.
> I will consider Patch 3 next, but if anyone has any hints, that would be
> In using libdvdnav, rather than showing a listing of "VOB" files to
> send, can I do something more clever? Like listing the "titles" found
> and send as a (new?) .VOB file. Perhaps select audio stream to use, and
> when sending VOB file, it sends that? Or will libdvdnav only help with
> parsing the DVD menus (which I can do nothing with since I send over HTML).
see the "-identify" code in mplayer to list the titles available
with all their details
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