Gamecube resets when loading CD game with too many ogg files

[Former user]

Original issue 351 created by streeker321 on 2013-07-13T12:32:06.000Z:

What steps will reproduce the problem?
All games with MORE than 18 tracks (1 data track + 17 OGG audio tracks) seem to cause the emulator to crash. They run fine with the audio tracks in WAVE format though.

What is the expected output? What do you see instead?
System reboots.

What version of the emulator are you using (official, SVN revision,...)?
1.7.4

Please provide any additional information below (Emulator settings, Console
setting,...)
- unmodded Gamecube (with SD Media Launcher)
- no special settings

[Former user]

Comment # 1 originally posted by ekeeke31 on 2013-07-13T13:09:13.000Z:

unfortunately, gamecube has very limited RAM (only 24MB) and the emulator+gui+libogc already takes much of that space, leaving not much for dynamic memory allocation which tremor library (ogg vorbis decoder) needs when opening tracks...

i could try to only open ogg file when required to be played as audio track (one file at time) although it might be less efficient

i admit i do not test the emulator on my gamecube anymore so i don't really know how mega cd emulation runs on it and would not be aware about issues like this

do you confirm it happens with EVERY games having more than 17 audio tracks ? isn't it just a problem with one game having track 19 corrupted ?

[Former user]

Comment # 2 originally posted by streeker321 on 2013-07-14T09:40:17.000Z:

It's definitely a general problem with games that have many audio tracks, not just one corrupted game. Furthermore, when I try a game that has (next to) max. possible audio tracks, I'm only able to start this one game - since the emulator crashes every time I try to switch over to another game (giving me a black screen with several lines of exception code).

[Former user]

Comment # 3 originally posted by ekeeke31 on 2013-07-14T11:24:06.000Z:

ok, i was able to confirm this memory issue on my gamecube (took some time to retrieve that damn sd gekko adapter and sdload bootable disc but it still works and brings some memories back ^^)

Anyway, i added a compiler defined option for the core to disallow multiple opened ogg file at the same time in order to save memory usage on platforms with limited ram, files are now closed and reopened when changing audio tracks and it seems to work fine without noticeable speed penalty

On that subject, i was quite surprised to see that mega cd emulation is running fullspeed on the gamecube cpu, the only bottleneck being slow SD access speed through the Memory Card slot adapter but it is expected. DVD loading does not work anymore however, it is apparently a problem within libogc DVD implementation, i might have to switch back to DVD commands from the emulator itself like it was before...

[Former user]

Comment # 4 originally posted by ekeeke31 on 2013-07-14T16:15:11.000Z:

Fixed in r813