PgcEdit v0.4

[2COOL]

Originally posted by r0lZ
[EDIT:] Done. The dialog is now a yes/no requester asking if you want to delete the VOBs, and remove the references in the IFOs.

Many thanks my friend!

[Surf]

Regarding my earlier glitch:

2 [main] mkisofs 1256 handle_exceptions: Exception: STATUS_ACCESS_VIOLATION
818 [main] mkisofs 1256 open_stackdumpfile: Dumping stack trace to mkisofs.exe.stackdump
****** ERROR returned by mkisofs! ******

It's my fault, didn't tailor it properly. Sorry, I had a panic attack I supposed. For I just updated to the latest version of nero's, wanting to compare recode with shrinky.

r0lZ, I know u din write IMGtool, I was fishing for advice.

[r0lZ]

phew! I prefer that!

BTW, it is not needed to have all the ImgTools Classic stuff installed. If you want, you can copy mkisofs.exe and cygwin1.dll in any directory. It should be sufficient.

[jsoto]

Deleting a cell command updates the command table, but its reference/s in Cell playback are not deleted. May be I am doing something wrong?

Not sure if this can be considered as a bug, it has a lot of implications:

I deleted a cell command which was then uniq in the PGC, but if you are deleting a cell command which is not the last one, all the references should be modified ....
The same if you adds a new one

jsoto

[r0lZ]

I know. It's not really a bug, but a missing feature. For now, you have to manually edit the command table.
It's on my TODO list...

[jsoto]

Don't worry. It is rarely needed, and IMHO it is enough to know it.

jsoto

[blutach]

Instead of deleting the cell command, until this is "fixed" could you change it to a NOP perhaps?

Regards

[jsoto]

Sure.
But I was trying to completely delete it, you know, HP3 tests, but finally this was not the problem, so changing by a NOP should be fine when you really need to do it.

jsoto

[jsoto]

Well, next "problem":
- Delete a cell in a PGC (currently in menu domain)

Usually it deletes a program (may be a chapter in titles domain)
So, how can I detect all the related Link commands (i.e. Link to program or link to cell).
Is this problem of "renumbering programs/cells" isolated to the own PGC (in menus, in titles you have the chapter...) or do I need to explore the whole DVD?

jsoto

EDIT: @blutach: Your HP3 has some linkprogram commands

[r0lZ]

The delete cell, program and chapter functions are still somewhat experimental. Works fine, but the functions do not check for links to item you deleted.
Also, if you delete a cell or program, you need to arrange the chapters table manually. If a chapter is pointing to a deleted program, the player may crash if that chapter is selected by the user.

For now, to locate the links to the deleted object, you may use the search function. You have to search only in the current titleset, as there is no way to jump directly to a cell, prog or chapter from the VMG, nor from other titlesets.
You may also use the "Go to calling command" function, which will list all references to the current PGC, but without the links coming from the same PGC.
Info -> Calls Cross References may be useful, too.

[jsoto]

You have to search only in the current titleset, as there is no way to jump directly to a cell, prog or chapter from the VMG, nor from other titlesets.

This is the answer I wanted. Thanks.

But, specifically in menus, and because I'm not an expert on VM, I'd like to know:
- If the deleted object can be called from a button (link program/cell). I suppose yes, weird!
- If the deleted object (cell, program) can be called from other PGC in the same VTS, same (menu) domain.
- If the deleted object (cell, program) can be called from other PGC in the same VTS, titles domain.

EDIT: Well, not only the deleted object, but also the following ones, I need to renumber all the commands

jsoto

[r0lZ]

I'm affraid it's yes to all questions.
You have to check for Link*Cell, Link*PG, LinkPTT, LinkPGN, LinkCN, JumpVTS_PTT, and all Set* + Link.
Only JumpVTS_PTT can be used outside the current domain. All link commands are allowed only within the current title domain, or within the current menu LU. But you must check the menu buttons and BOVs also. Pitty!

[jsoto]

I'm asking specifically in menu domains, so I believe we can forget LinkPTT and JumpVTS_PTT. Can we?

And because the rest of the commands should be issued in the same PGC, I believe we can limit the searching to the current PGC + Menu(VOB) buttons in the same PGC (which is enough difficult, BTW). Am I wrong?

Err, Can be BOV in menus? I hope No.

jsoto

[r0lZ]

Right. This is somewhat simpler.

BOV is the name of the menu buttons when there are located in the title domain. In fact, it's almost exactly the same thing. You may safely ignore them if you want to work only on 'real' menus. But take in mind that some DVD do have all their menus in the title domains, so, you will perhaps want to process them also in the future... I have made the error of considering that BOV are not verry important, and I coded PgcEdit without them in mind. It is a lot of work to add them thereafter.

[2COOL]

r0lZ,

In regards to kill playback option "Kill playback if there are no cell commands in the PGC" while doing blanking, I came across alot of PGCs with this scenario.

Before:

********** pre commands:
[71 00 00 0D 00 01 00 00]   1  Set gprm(13) =(mov) 1 
********** post commands:
[20 04 00 00 00 00 00 04]   1  LinkPGCN PGC 4 
********** cell commands:
[20 01 00 00 00 00 00 0D]   1  LinkTailPGC

Is is possible to have the algorithm detect that there is just a single cell command only holding a "LinkTailPGC" command and recommends us to blank unconditionally?

After:

********** pre commands:
[71 00 00 0D 00 01 00 00]   1  Set gprm(13) =(mov) 1 
[00 00 00 00 00 00 00 00]   2  NOP 
[20 04 00 00 00 00 00 04]   3  LinkPGCN PGC 4 
********** post commands:
[20 04 00 00 00 00 00 04]   1  LinkPGCN PGC 4
********** cell commands:
[20 01 00 00 00 00 00 0D]   1  LinkTailPGC

[r0lZ]

With PgcEdit 0.5 beta, such situation, and some other, are now detected, and the blanking is done, even if the safe option is selected.

Another situation that is now checked is this one: There is only one post command, and all cell commands are equal to that post command. Obviously, it's also safe to kill playback in this case.

Also, more generally, the kill playback is assumed to be safe it there are no cell commands branching outside the current PGC. (In particular, the Link*Cell, Link*Program and LinkPTTN are now ignored.)

[r0lZ]

PgcEdit 0.5.0 beta 8 (first public beta) is available. See this thread.

Please post all messages related to v0.5 beta to the new thread. Thanks.

[r0lZ]

The current PgcEdit version is discussed here: PgcEdit 0.5

Please post all questions and bug reports related to v0.5 in that thread. Thanks.