[Mplayer-dev-eng] more on IFO

[Denis Ducamp]

On Fri, Aug 17, 2001 at 05:11:01PM +0200, Arpi wrote:
> Hi,
> 
> Thanks, great news! :)
> I'm on integrating libdvdread into mplayer, but first I wanted to be
> sure it works well with multiple titles/chapters/angles.
> 
> My next question: how portable is it? Authors said it's portable, but
> I want to hear from *BSD, solaris (x86&sparc), alpha etc developers/users too.

tested only under linux 2.2.19 glibc 2.2.2 gcc 2.95.2

> > Here is what I have on a french musical dvd with some multiangle song and
> > other not :
> > 
> > $ ./title_info /dev/cdrom 
> > There are 8 titles.
> 
> >         Title has 20 chapters and 2 angles
> >         Chapter   0 [PGC  1, PG  1] starts at Cell  0 [sector 0-28fc6]
> >         Chapter   1 [PGC  1, PG  2] starts at Cell  1 [sector 28fc7-29781]
> hmm. it is tricky, it simply skips few sectors sometimes (another angle?)
> 
> is the whole title multi-angle?

no, only 2nd, 3rd and 5th chapter are multi-angle.

When in a multi-angle song, mplayer alone play alternatively 1 second of
each angle, so you have :
time 0-1 angle 1
time 0-1 angle 2
time 1-2 angle 1
time 1-2 angle 2
time 2-3 angle 1
time 2-3 angle 2
...
When in a single-anle song, mplayer play correctly the song without any
problem.

> i mean every frame differs in 2 angle versions, or there are common parts?

I may upload a few MB of vts_02_2.vob and vts_02_3.vob which are
respectively multi-angle and single-angle. I just uploaded
ifo-dump-dev-cdrom-2.gz (125024 butes), result of "./ifo_dump /dev/cdrom 2"

> can you show me this title dump with angle 1 and then angle 2 selected?
> (i want to see the difference in sector map)

Hope the result from ifo_dump is enough.

> > Xvideo image format: 0x36315652 (RV16) packed
> > Xvideo image format: 0x35315652 (RV15) packed
> Is it Savage4?

>From lspci -v :
01:00.0 VGA compatible controller: S3 Inc. 86C270-294 Savage/MX-/IX (rev 11) (prog-if 00 [VGA])
        Subsystem: Toshiba America Info Systems: Unknown device 0001
        Flags: bus master, 66Mhz, medium devsel, latency 248, IRQ 11
        Memory at f0000000 (32-bit, non-prefetchable)
        Expansion ROM at 000c0000 [disabled]
        Capabilities: [dc] Power Management version 1
        Capabilities: [80] AGP version 1.0
on a toshiba tecra 8100.

>From /var/log/XFree86.0.log :
(--) PCI:*(1:0:0) S3 Savage/MX-MV rev 17, Mem @ 0xf0000000/27
[...]
(--) SAVAGE(0): Chip: id 8c10, "Savage/MX-MV"
(--) SAVAGE(0): Engine: "MobileSavage"

But that laptop is for work... I'd prefer my i815 on my personal vaio
supporting XVideo as well, actually I don't understand why it doesn't.

Regards,

Denis Ducamp.

-- 
 Denis.Ducamp at hsc.fr --- Hervé Schauer Consultants --- http://www.hsc.fr/
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