According to our win32 guys, frequent calls to SDL_CDStatus cause choppy
video, sound, etc and are a general detriment to performance. I don’t
have a problem with it in Linux, and I don’t know about mac or anything
else since we haven’t got someone working on those platforms yet. In any
event, I don’t think we should be seeing this problem. Bug maybe?
This code is called as part of the standard loop:
void
CDAudio_Update (void)
{
CDstatus curstat;
static time_t lastchk;
if (!cd_enabled)
return;
if (cd_playing && cd_lastchk < time (NULL)) {
cd_lastchk = time (NULL) + 2;
cd_curstat = SDL_CDStatus (cd_handle);
if (cd_curstat != CD_PLAYING && cd_curstat != CD_PAUSED) {
cd_playing = false;
if (cd_playLooping)
CDAudio_Play (playTrack, true);
}
}
}
Is there something we’re doing wrong, or is this a bug? Advice humbly
requested. =)–
Joseph Carter Free software developer
It is when the example source won’t compile …
<Erik> then you fucked something up <Knghtbrd> Nope, I followed their instructions <Erik> that may’ve been your problem :}
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According to our win32 guys, frequent calls to SDL_CDStatus cause choppy
video, sound, etc and are a general detriment to performance. I don’t
have a problem with it in Linux, and I don’t know about mac or anything
else since we haven’t got someone working on those platforms yet. In any
event, I don’t think we should be seeing this problem. Bug maybe?
This is just the way Windows works. Only call CDAudio_Update() every
few seconds or so.
See ya,
-Sam Lantinga, Software Engineer, Blizzard Entertainment
Hmm, we had some win32-native code that was a bit better behaved than
that, but elected not to use it in favor of SDL. I guess I’ll have to
compare what it does with what SDL does internally. Will report back any
interesting findings.On Thu, Aug 09, 2001 at 01:48:58PM -0700, Sam Lantinga wrote:
According to our win32 guys, frequent calls to SDL_CDStatus cause choppy
video, sound, etc and are a general detriment to performance. I don’t
have a problem with it in Linux, and I don’t know about mac or anything
else since we haven’t got someone working on those platforms yet. In any
event, I don’t think we should be seeing this problem. Bug maybe?
This is just the way Windows works. Only call CDAudio_Update() every
few seconds or so.
–
Joseph Carter Free software developer
Software is like sex, it’s better when it’s free. – Linus Torvalds
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Le 09 Aug 2001 14:46:50 -0700, Joseph Carter a ?crit :
According to our win32 guys, frequent calls to SDL_CDStatus cause
choppy
video, sound, etc and are a general detriment to performance. I
don’t
have a problem with it in Linux, and I don’t know about mac or
anything
else since we haven’t got someone working on those platforms yet.
In any
event, I don’t think we should be seeing this problem. Bug maybe?
This is just the way Windows works. Only call CDAudio_Update()
every
few seconds or so.
Hmm, we had some win32-native code that was a bit better behaved than
that, but elected not to use it in favor of SDL. I guess I’ll have to
compare what it does with what SDL does internally. Will report back
any
interesting findings.
SDL_CDStatus does a lot of extra stuff uneeded… you can hack a smaller
version of SDL_CDStatus that do not query the cdaudio toc everytime…
I have written a cd audio player in the past using pure win32 calls…
and I remember
that querying the toc was sometimes nasty…> On Thu, Aug 09, 2001 at 01:48:58PM -0700, Sam Lantinga wrote: