On 2014-09-30 16:48, Alexander E. Patrakov wrote: > 30.09.2014 19:35, Heero Yui wrote: >> Hello >> >> I have write a simple echo suppressor inside the echo-cancel module (it >> is based on "null" version). >> When I activated it, I also open input and output channels, the module >> work correctly. >> I launch it with (same with null): >> pacmd load-module module-echo-cancel aec_method=null >> source_master=alsa_input.0.input-microphones adjust_time=1 >> pacmd set-default-source alsa_input.0.input-microphones.echo-cancel >> pacmd set-default-sink alsa_output.0.output-speakers.echo-cancel >> >> The problem: When I open an other output, at the flush request, it take >> like 1 or 2 second more time as when I have not activate the echo >> canceller (work with a paplay) >> >> And I did not understand why! > > I also don't understand why. However, please note that this bug is not > specific to module-echo-cancel. It can also be reproduced with > module-virtual-sink that deliberately does absolutely no processing and > just serves as a template for new virtual sinks. The pa_sink_process_input_underruns stuff was something I added a while ago to speed up draining. I don't think I ever tested that with a chain of sinks, so maybe pa_sink_process_input_underruns needs to take filter sinks into account somehow? -- David Henningsson, Canonical Ltd. https://launchpad.net/~diwic
