Date: Sun, 3 Oct 2021 21:24:19 +0200 From: Hans Petter Selasky <hps@selasky.org> To: J P <webplication@gmail.com>, freebsd-multimedia@freebsd.org Subject: Re: tee-like function via virtual_oss Message-ID: <b31c652f-49b5-9d93-640a-242cdcce56dc@selasky.org> In-Reply-To: <03103736-8052-5901-b5bf-288a313af874@selasky.org> References: <CABcCtURUbpfGk6U7qjycqEoBp5WKOzYUwuJbjMOXqDCMZtKtPQ@mail.gmail.com> <03103736-8052-5901-b5bf-288a313af874@selasky.org>
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On 10/3/21 9:18 PM, Hans Petter Selasky wrote: > On 10/3/21 5:47 PM, J P wrote: >> Hi, >> I need to record what is being played back from a play-only device: >> pcm0: <ATI R6xx (HDMI)> (play) default >> >> I thought that virtual_oss might come at hand for this and function in a >> "tee-like" fashion but I am unable to have it work. >> >> My config is as follows: >> -T /dev/sndstat -C 2 -c 2 -r 48000 -b 24 -s 8.0ms -f /dev/null -d dsp5 -M >> x,0,5,0,0,0 >> >> What am I doing wrong? >> >> It seems that this configuration connects the input of dsp5 to the output >> of dsp0, but I actually need the other way around. >> >> Thank you. > > Hi, > > Try this: > > virtual_oss -T /dev/sndstat -C 2 -c 2 -r 48000 -b 24 -s 8.0ms -R > /dev/null -P /dev/dsp0 -d dsp9 -M x,0,0,0,0,0 -M x,1,1,0,0,0 > > You need two monitor filters, one for each channel. > > --HPS > Hi, Maybe you want to add the -S option too, to support re-sampling. Anyway, if you want the default audio device to behave like this, that what you play back can instantly be recorded, then replace "-d dsp9" with just "-d dsp". --HPS
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