4fb65ae3e8
The sample frequency is an artificial parameter used for isochronous out transfers to better match the target frequency (usually, a sound card). when hz is set, devusb adjusts the endpoint's maxpkt to get the requested frequency and a multiple of the samplesize per packet. however, when hz is not set, then we should calculate the frequency from maxpkt, ntds and pollival, so all parameters will be consistent with each other. |
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