On Tue, Feb 26, 2008 at 01:07:14AM +0000, Mathis Richter wrote: > On 2008-02-25 14:10, Eric Blossom wrote: > > The code doesn't support S24_3LE because when we wrote it, we didn't > > have any cards that used that format, and it wasn't obvious (to me) > > exactly how the format was represented. It would be great if you > > could sort this out and submit a patch with the fix. > > As much as I would like to do that, I don't know enough about it all. > Looking around a bit to see whether I could figure something out, I soon > got stuck... > I then tried to use the .asoundrc file to convert the incoming signal > into a different format, but no luck there either. > > > Let me know if you need more of a clue, and I'll take a look at the > > code. > > Any help would be greatly appreciated! I will be working on this during > the next couple of days. > > Thanks, > Matt
Hi Matt, The code that needs to be modified is in gr-audio-alsa/src/audio_alsa_sink.cc and audio_alsa_source.cc If you look at either piece of code, you'll see that there's a work_s16, work_s32, work_s16_1x2, work_s32_1x2. What you'd need to provide is the corresponding work_s24 and work_s24_1x2. The *_1x2 versions are used to force mono data into stereo format to account for cards that only handle two channels. I think if you look at the code, you'll find that it shouldn't be too tricky... and you've got a sound card which you can test it on! Please give it a try! Eric _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
