Stream/Device Latency
Stream/Device Latency
- Subject: Stream/Device Latency
- From: Andrew Kimpton <email@hidden>
- Date: Thu, 30 May 2002 09:07:58 -0700
I'm attempting to use kAudioDevicePropertyLatency ('ltnc') to establish
the latencies in my input and output streams. Running with a TiBook
(667), Mac OS X 10.1.4 and using the built in audio hardware getting the
value of this property always seems to return 0 (and no errors). I
notice in TN 2029 mention of a kAudioDevicePropertyStreamLatency but
this doesn't seem to be in the Framework headers I have installed (I
have the latest dev tools) should I actually be getting the Stream
Latency property (if so what's the 'selector' code) or are they the same
thing but the built-in hardware driver for the TiBook just returns zero
for the latency ?
More details - I get the property twice once with a device ID = 0x0a,
channel =0, input = 0 and then again with device ID = 0x0a, channel = 0,
input = 1. I just add the results to get the total in & out latency.
Andrew 8-)
P.S. Even more telling I just ran Daisy on this system and reports 0
latency too ! I'm guessing the driver doesn't 'do the right thing',
either that or the audio hardware on the TiBook is *amazing* 8-)
_______________________________________________
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.