Opened 20 years ago
Closed 20 years ago
#2011 closed defect (fixed)
BS1 Hangs after cutscene without sw or hw mixing
| Reported by: | SF/jellby | Owned by: | eriktorbjorn |
|---|---|---|---|
| Priority: | normal | Component: | Engine: Sword1 |
| Version: | Keywords: | ||
| Cc: | Game: | Broken Sword 1 |
Description
This probably happens with other games too.
I have a soundcard with no hardware mixing. If I don't setup software mixing, BS1 hangs at the last frame of the cutscene played when entering the sewers (near the beginning).
The problem is solved if I activate ALSA's software mixer or if I remove the sound files, so I think that proves it's a sound problem (management of the sound device).
See also this forum message: http://sourceforge.net/forum/forum.php? thread_id=1275794&forum_id=115757
Mandrake Linux 10.1 ScummVM 0.8.0CVS (Apr 29 2005 15:22:13) Features compiled in: Vorbis FLAC MP3 ALSA zLib MPEG2
Ticket imported from: #1192646. Ticket imported from: bugs/2011.
Attachments (3)
Change History (14)
by , 20 years ago
| Attachment: | SAVEGAME.000 added |
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comment:1 by , 20 years ago
In regards to the forum thread, there is no difference in how ScummVM plays the cutscene audio compared to how it plays other sounds. They all go through ScummVM's own mixer. (Except for hardware MIDI.)
At the very end of the BS1 cutscene player there is this:
while (!anim->soundFinished()) _sys->delayMillis(100);
Where soundFinished() simply checks if the _bgSound sound handle is still active. I can understand how this could cause the half-second freeze that frank_m24 describes. Though since the entire cutscene soundtrack is about 7 seconds (according to ogginfo), I don't understand at all why it would hang there indefinitely.
Just out of curiosity, what happens if you use ogg123 or any other bare-bones Ogg Vorbis player to play the sewer.ogg file?
comment:2 by , 20 years ago
Hmm... now that you mention it... If I play sewer.ogg (or any other .ogg in the game) with ogg123, the sound stutters and I get several "ALSA: underrun, at least 0ms." lines in the console. It plays fine in-game or with mplayer, though.
I'm attaching the shortest .ogg file if anyone wants to test it...
comment:3 by , 20 years ago
Oh well, I was just wondering if maybe there was something strange with the Ogg Vorbis libraries on your system. Unlikely idea, I know.
Since I can't reproduce this problem myself there isn't really much I can do. If I could reproduce it, what I would do first would be to check if that while-loop is where the cutscene hangs. That's in sword1/animation.cpp
If so, I'd try to figure out why ScummVM's mixer claimed the sound handle was still active. That'd be in sound/mixer.cpp, though I'm less familiar with that part of the code.
But I don't know if that's of any help to you...
comment:4 by , 20 years ago
It doesn't seem to reach the test you mentioned. I modified sword1/ animation.cpp around line 170 so that it's:
} printf("Frame: %i\n",frameCount); //ifg } printf("End of animation\n"); //ifg } while (!anim->soundFinished()) _sys->delayMillis(100); delete anim;
Without "AUDIODEV=swmixer" it stucks at "Frame: 54", "End of animation" is never shown.
So, with my little programming knowledge, it would seem there's a problem in decodeFrame (graphics/animation.cpp), which also does some sound tests. Could that be?
comment:5 by , 20 years ago
It looks like the AUDIODEV trick is not enough. I've now played to Ireland and the game hangs as well at the end of ireland.mp2. Still, it seems related to sound and, although the behaviour is not 100% reproducible, it seems using my custom-encoded ireland.ogg makes the hang more likely.
By the way, my .ogg's are stereo while the downloaded ones are mono, I don't know if that makes any difference.
comment:6 by , 20 years ago
OK, I've re-encoded video and sound and the problem seems to have disappeared. Now ogg files are mono. However, I don't think it was right for scummvm to hang...
I'm attaching a zip with two files: the old ireland.ogg, which makes the game hang, and a savegame: just exit the museum, go to the aiport and to Ireland. Here, it hangs.
by , 20 years ago
| Attachment: | ireland.zip added |
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comment:8 by , 20 years ago
Well, in case it helps this is an IBM Thinkpad R51. Exactly this model:
http://www-307.ibm.com/pc/support/site.wss/quickPath.do? quickPathEntry=1829r6g
comment:9 by , 20 years ago
I was thinking more in terms of operating systems. I couldn't reproduce it under Windows. Perhaps I'll have more "luck" under Linux.
comment:10 by , 20 years ago
| Owner: | set to |
|---|---|
| Resolution: | → fixed |
| Status: | new → closed |
comment:11 by , 20 years ago
I was able to reproduce it under Linux. The problem is actually the exact opposite of what I first thought: it's not that the sound is too long, it's that it's too short. The cutscene player waits for it to play for a certain duration before drawing the next frame. If the sound ends prematurely, it just keeps on waiting.
There was some code in there that looks like it was intended to catch this case, but it wasn't enough.
It should be fixed in CVS now. Otherwise, feel free to reopen.
Before entering the sewer (open it with the bar) English version