Messages in this thread | | | Date | Fri, 19 Feb 1999 00:53:50 +0100 | From | Erland Lewin <> | Subject | ad1848.c: sound card clicks with v3.8o, but not 3.5.4-beta8 |
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I use the cs4232 and ad1848 drivers for my Turtle Beach Malibu sound card. Under kernel 2.2.1 it clicks before every playback or recording (I would think every time the device is opened). Under 2.0.35, it would only click twice - when the sound module driver was first loaded, and the very first time a sound file was played.
Browsing through the code, it seems like ad1848.c has been through some major revisions. Among other things, ad_mute has been changed and ad_unmute does nothing... Can it be that some mute doesn't take effect? Or is the card being shut down a bit too much on close()?
While I'm writing, where is the best documentation on how to do full duplex audio? I'm trying to play and record from two separate POSIX threads. It is working ok, but it would be nice with some specifics documentation on what is allowed and not wrt reading and writing, blocking, etc.
Please cc: any replies to me.
Thanks!
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