On Thu, 20 Jul 2017 18:14:07 +0000, Robert Bielik wrote: >No, software input to output, i.e. capture data and send to playback >directly with minimal latency. > >But I realize that mmapping is not possible since capture and playback >device will have separate buffers, so I still have to copy from >capture to playback buffers. I don't know to what "zero-copy" in the description refers to, but even if there should be the need to copy, I doubt that latency caused by such copies would be an issue, at least not for a negligible amount of IOs. I guess if latency isn't caused by audio hardware, than usually by the signal processing of applications, but unlikely by the routing. However, I never programmed using ALSA and my audio recording experiences are from decades ago. I was just surprised about the < 1 ms, since I would expect software side this shouldn't be an issue. I might be mistaken. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
