Takashi Iwai wrote: > At Fri, 19 May 2006 17:42:55 +0200, > Hans-Christian Egtvedt wrote: >> Takashi Iwai wrote: >>> At Fri, 19 May 2006 12:44:58 +0200, >>> Hans-Christian Egtvedt wrote: <snipp code> >> But it does not work quite as expected. I'm still able to set rate and >> format from userspace (aplay/arecord), and this again will alter the >> hardware setup when the prepare callback is called. > > Right. The restriction of configuration space is defined by the rules > set in open callback. hw_params callback just follows the given > parameter and returns the success or the failure code. > > A typical code is like below: <snipp code example> Thank you, this really clear things up. Driver is working as expected now. > In addition, a proper mutex would be preferred around the operation. > > To be more strict, we may change hw_params like the following: <snipp code example> > However, this doesn't work with OSS emulation because OSS emulation > initializes the rate to a certain default one. If app tries to change > the rate in the full-duplex mode, then it's refused. I will leave this part out for now, since it dosn't work with OSS emaulation. -- With kind regards, Med vennlig hilsen, Hans-Christian Egtvedt Applications Engineer - AVR Applications Lab Atmel Norway ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
