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
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