On Thu, 7 Jan 2010, Preston wrote: > Bill Unruh <unruh <at> physics.ubc.ca> writes: > >> >> On Thu, 7 Jan 2010, Preston wrote: >> >>> For weeks now I have been struggling to make duplex audio work in my >>> software. I have exhausted my web browser looking for answers. So I >>> have decided to fall back and ask about the general idea. Is there a >>> way to open capture and playback streams at the same time? >> >> Sure. Just run aplay and arecord at the same time, and you will get duplex. >> >> Ie, this demonstrates that a) it is possible, and b) not only is it possible >> but it is possible for two independent programs to do this at the same time. >> >> Now if on your system this does not work then it may indicate that for your >> card duplex does not work. >> >>> >>> I have a dumb codec connected to an Atmel AT91SAM9260-ek board. >>> Alsa version 1.0.19 and a custom driver for the codec (initializes >>> as a card connected to SoC). Functionality works great when single >>> stream is setup. However finding a way to setup both streams is >>> killing me. I will eventually be passing the data captured from >>> the card to a TCP socket. Then will collect data from socket and >>> playback on card. effectively duplex audio over ethernet. >>> >>> So now I plead. Anybody have a method to open capture AND playback >>> streams Simultaneously? What I am saying is that demonstrates that the playback and recording streams CAN be opened at the same time. Now you need to look at aplay and arecord to see how they open their streams. That they are two separate programs is beside the point. ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
