--- James Tappin <[EMAIL PROTECTED]> wrote: >On Monday 15 Apr 2002 13:16, Patrick Shirkey wrote: >> --- Paul Davis <[EMAIL PROTECTED]> wrote: >> >>>framework for ALSA worked out, which is even more of a problem. Its >> >>>still unclear at this point whether the ALSA framework will be: >> >>> >> >>> >> >>> application<->alsa-lib<->alsa-driver<->low-level-ALSA-USB-class-driver >> >>> >> >>>OR >> >>> >> >>> application<->alsa-lib<->low-level-non-ALSA-USB-class-driver >> >>> >> >>>the first one is easier to write, the second one is more flexible. >> >> I think a good example of how ALSA should work with USB devices is the >> gphoto approach. From what I know of their framework it is along the same >> lines as the first option. > >I think a more exact description of the gphoto approach is: >application<->gphoto-lib<->usb-lib<->low-level-generic-USB driver. > >Only the low-level kernel USB drivers and the usbdevfs filesystem are in >kernel space, beyond that the hardware driving is done via the user-space >libusb. I'm not sure whether this would have low-enough latency for audio >use, after all, digital cameras aren't timing-critical for the sort of things >that gphoto aims to do. > >
I think that there is support in gphoto for capturing video streams but I haven't used it so I don't know if that is correct. Anyway if I am correct then latency issues would have been solved already. I will query with someone from their list and report back unless someone else knows for certain. -- Patrick Shirkey - Boost Hardware Ltd For the discerning hardware connoisseur Http://www.boosthardware.com Http://www.boosthardware.com/LAU/Linux_Audio_Users_Guide/ >-- >+------------------------+-------------------------------+---------+ >| James Tappin | School of Physics & Astronomy | O__ | >| [EMAIL PROTECTED] | University of Birmingham | -- \/` | >| Ph: 0121-414-6462. Fax: 0121-414-3722 | | >+--------------------------------------------------------+---------+ > >_______________________________________________ >Alsa-devel mailing list >[EMAIL PROTECTED] >https://lists.sourceforge.net/lists/listinfo/alsa-devel _____________________________________________________________ Want a new web-based email account ? ---> http://www.firstlinux.net _____________________________________________________________ Run a small business? Then you need professional email like [EMAIL PROTECTED] from Everyone.net http://www.everyone.net?tag _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
