Bo-liang Guan wrote: > Hi all > > I'd like to get the current sample rates. I know that the ioctl > "SNDCTL_DSP_SPEED" could > set the sample rates, but i can't find the ioctl to get the sample > rates. Can anybody tell me. > This is very simple. You should store the sample rate in a local variable after setting it. The rate is returned by SNDCTL_DSP_SPEED in the argument variable after the call.
It is possible to query the sample rate by setting the argument variable to 0 before calling SNDCTL_DSP_SPEED. However it doesn't make any sense to do this.Applications must always set the sample rate before using the device. Best regards, Hannu
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