AthlonRob wrote: >On Sat, 2002-10-05 at 12:29, Sagi Bashari wrote: > > >>No answer on the users list, forwarding to devel. >> >> > >Yes... let me go ahead and re-hash this for those who don't want to read >through the earlier email. > >Sagi and I have two different soundcards with somewhat similar, yet >different, problems. (Ambigious enough?) > >His soundcard theoretically supports hardware mixing both in actual >hardware and in the ALSA drivers, yet when he tries to open a second >audio stream, the application attempting to do so simply hangs until the >resource is free. I think he said his card was a GTXP... I am >unfamiliar with it. > >My soundcard also supports hardware mixing, but only in the hardware.. >not in the ALSA drivers. Perhaps two threads would be ideal. Oh well. >I'm running on an nForce board using its integrated audio. The drivers >nVidia provided (for OSS) simply consisted of an Intel i810 audio >patch. I guess y'all on the ALSA team were able to utilize the >nVidia-released patch and do the same thing to the ALSA i810 drivers. > >Anyway... Sagi needs to know how to get the multiple streams working on >his card, globally. > >I need to know if it is possible to get the nForce (using the patched >i810 driver) to support hardware mixing so I can send many audio streams >to it at once. I have basically no programming experience, but may have >a few friends who could help me if I had some clue of the how or the why >of it. Alternatively, since I cannot afford to send anybody hardware... >if somebody was really interested in working on this, I could give you >ssh access and work with me, here, physically... but I don't know how >useful or feasable such a thing would be. > >Anyway... input on either or both topics by you guys who really know >what you're doing would be much apperciated! :-) > >Rob > > > mypc: /proc/asound/card0/pcm0p# cat info card: 0 device: 0 subdevice: 0 stream: PLAYBACK id: CS4231 name: Yamaha OPL3-SA23 subname: subdevice #0 class: 0 subclass: 0 subdevices_count: 1 subdevices_avail: 1 <- This tells you how many streams the sound card can handle in hardware at the same time. E.g. Only one application at a time can use the card.
As you can see, my old sound card can only handle one stream at once in hardware. Alsa does not do any software mixing. I also have a SB Live in another machine, the subdevices_avail is then 32 because the SB Live can handle 32 streams at once in hardware. There are other applications/tools you can use, one of which is "JACK" that allows for multiple audio streams mixed in software and lots of other cool stuff. Does this help you at all ? Cheers James ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
