Re: Re: CallHostTransportState
Re: Re: CallHostTransportState
- Subject: Re: Re: CallHostTransportState
- From: <email@hidden>
- Date: Sun, 1 Aug 2004 17:38:09 +0000
>
From: Stefan Gretscher <email@hidden>
>
Date: 2004/07/29 to PM 11:37:59 GMT
>
To: email@hidden
>
CC: CoreAudio API <email@hidden>
>
Dmne: Re: CallHostTransportState
>
>
Am 27.07.2004 um 15:02 schrieb email@hidden:
>
> Is it OK to query the host for transport information yet?
>
Should be.
>
>
> I tried to use it anyway but I get mostly crashes out of Logic 6.4.1.
>
The currently released versions of Logic don't support transport
>
information. We're in the process of upgrading Logics AU hosting
>
and newer versions will handle this properly.
>
>
Does 6.4.2 crash as well? I recall having fixed a bug in the host
>
callbacks that was striking when AUs requested more callbacks
>
than Logic was supporting, and I think that was before 6.4.2 but
>
I'm not sure. That should save you from crashing.
No, you are right. I just updated to 6.4.2 and it doesn't crash.
/Olof W
>
>
By the way, AUs that don't need transport info can probably work
>
around this crash bug by changing the size returned by
>
AudioUnitGetPropertyInfo for the kAudioUnitProperty_HostCallbacks
>
so that it only handles those callbacks that Logic supports:
>
>
typedef struct OldHostCallbackInfo {
>
void * hostUserData;
>
HostCallback_GetBeatAndTempo beatAndTempoProc;
>
HostCallback_GetMusicalTimeLocation musicalTimeLocationProc;
>
} OldHostCallbackInfo;
>
>
>
Kind regards,
>
>
Stefan Gretscher
>
>
plug-in development & 3rd party plug-in support
>
Emagic Soft- & Hardware GmbH
>
>
Stefan Gretscher
>
>
plug-in development & 3rd party plug-in support
>
Emagic Soft- & Hardware GmbH
>
a subsidiary of Apple Computer, Inc.
>
>
email: email@hidden
>
phone: (+49)-4101-495-586
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.