[DVDnav-discuss] libdvdread compatibility patches..

[Nico Sabbi]

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.

very interesting

> 
> 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 
> appreciated.
> 
> 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