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Alexey Kruglov alexey.kruglov at gmail.comHi. Since there's no discussion, I'll write a little more about that extra delay issue. > I noticed there is a 1 second delay in librtlsdr between calling > rtlsdr_cancel_async and releasing from rtlsdr_read_async. I'm writing a 1) I suggest to incorporate the first of my two fixes into the master branch. The first fix sholdn't break anything, it works well for me and fixes the delay bug. I moved on to my other projects, and ain't going to investigate this problem any more. > And the two possible fixes for 1 second delay bug depending on the > answer are (diffs): > === > 1630a1631 >> struct timeval tv_nb = { 0, 0 }; > 1696c1697 > < libusb_handle_events_timeout(dev->ctx, &tv); > --- >> libusb_handle_events_timeout(dev->ctx, &tv_nb); > === > 2) There was an error in my second fix: I obviously should have removed only the libusb_handle_events_timeout line, not the whole `if'. > === > 1694,1698d1693 > < > < if (dev->dev_lost || RTLSDR_INACTIVE == next_status) { > < libusb_handle_events_timeout(dev->ctx, &tv); > < break; > < } > === -- GPG fp: 6DFA 1186 7576 DE60 6CCB EB39 AD81 1733 EEBB 970A