On Mon, 26 Jul 2021, at 11:18 PM, Chengyi Zhao wrote: > Hi guys, > > I found the following logic when I change the volume while playing > audio.I guess there is some audio expertise here, would you please tell > me the principle, thanks a lot! > > In the file sink-input.c(./src/pulsecore/sink-input.c), why does pa need > to invoke the function pa_sink_input_request_rewind to rewrite and > rewind the data?
Because you might have a large buffer, and you want volume updates to be audible immediately. More details here: https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/Developer/Rewinding/ -- Arun _______________________________________________ pulseaudio-discuss mailing list pulseaudio-discuss@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
