#8432 closed patch
Warning Windows users about the known "play from CD" bug
| Reported by: | eriktorbjorn | Owned by: | eriktorbjorn |
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| Priority: | normal | Component: | Port: Win32 |
| Version: | Keywords: | ||
| Cc: | Game: |
Description
When looking at discussion forums - both our own and other LucasArts-related ones - it's depressing to see how often the "Room X not in Y" problem comes up. This is almost certainly the known bug where playing a game with CD audio tracks from the CD causes ScummVM to crash.
Since this bug has been known for ages, I assume that we don't have any way to work around it. We can, however, issue a warning message to the user. That's what this patch does.
I don't know if this is the cleanest way of doing it, so it should be viewed as a proof-of-concept. It's quite possible that we need to add the same check for the Goblins engine, since that too uses CD audio tracks for some games.
Ticket imported from: #1208299. Ticket imported from: patches/537.
Attachments (1)
Change History (11)
by , 20 years ago
| Attachment: | cd-warning.diff added |
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comment:1 by , 19 years ago
I'll take this opportunity to ask a newbie question: is there any explanation why this bug only occurs on Windows? I know a fair number of emulators under Win32 (mainly of Japanese systems like PC-88, PC-98, FM-Towns, PC Engine, Megadrive, etc) which are able to switch from audio tracks to data tracks without crashing. Why does that occur to ScummVM? Is it really a Windows bug, or maybe related to SDL? Sorry, I don't quite understand this.
comment:2 by , 19 years ago
I have no idea. All I know is that it's been listed as a known bug for as long as I can remember, and this is the best workaround I can come up with.
comment:4 by , 19 years ago
| Owner: | set to |
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comment:5 by , 19 years ago
It is a bug in Windows 2000/XP, not sure about earlier Windows versions. The problem is getting data off the CD, while CD audio is still playing. Try playing back any audio track on a CD and then copying a large file off that CD, you will get problems. An error or the CD audio just stops for long periods.
I have not seen the bug mentioned outside of ScummVM though, I can't seem to find any mention of it in the Microsoft Knowledge Base.
comment:7 by , 19 years ago
Erik, I guess it's the best we can do at this time, so feel free to add it.
Nevertheless, I still think it would be good if we confirmed that this is a Windows XP bug and that no workaround exists. I am surprised that there is no knowledge base article about this; but then again, dual Audio/Data CDs aren't that common, and modern games do not use audio CD tracks, so maybe only very few people ever notice this problem ?
comment:9 by , 19 years ago
| Owner: | changed from to |
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| Status: | new → closed |
comment:10 by , 6 years ago
| Component: | → Port: Win32 |
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Patch against a May 25 CVS snapshot