I am trying to capture surround sound with the alsa loopback device. I have configured the loopback device as sound card 0. I have no .asoundrc file. I am testing the loopback device with ecasound and kodi. I start ecasound (I do not know if this an ecasound or an alsa question) with the following command - brombo@TV:~$ ecasound -i alsahw,0,1 -o alsahw,2,8 ************************************************************************** * ecasound v2.9.1 (C) 1997-2014 Kai Vehmanen and others ************************************************************************** (eca-chainsetup) Chainsetup "untitled-chainsetup" (eca-chainsetup) NOTE: Real-time configuration, but insufficient privileges to utilize real-time scheduling (SCHED_FIFO). ... With small buffersizes, this may cause audible glitches during processing. (eca-chainsetup) "rt" buffering mode selected. (eca-chainsetup) Opened input "alsahw", mode "read". Format: s16_le, channels 2, srate 44100, interleaved. (eca-chainsetup) Opened output "alsahw", mode "write". Format: s16_le, channels 2, srate 44100, interleaved. - [ Connected chainsetup: "untitled-chainsetup" ] ------------------------ - [ Controller/Starting batch processing ] ------------------------------- - [ Engine - Driver start ] ---------------------------------------------- ^C- [ Controller/Batch processing finished (0) ] --------------------------- - [ Engine exiting ] ----------------------------------------------------- (eca-control-objects) Disconnecting chainsetup: "untitled-chainsetup". brombo@TV:~$ alsahw,0,1 is the loopback capture device and alsahw,2,8 is a hdmi output. The ecasound command is executed before I start kodi. I select the loopback audio device in the kodi audio setup menu. This gives me sound, but only in stereo, even if the source is 5.1 channels. If I select the hdmi output in the kodi audio setup I get 5.1 channel output. Do I need to force the loopback device to use 6 channels. If so how do I do it? Is there another problem? Thank you for looking at my problem. ------------------------------------------------------------------------------ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
