Hi, right now you can find a driver for USB audio on cvs. it's in alsa-driver not in alsa-kernel. the driver will be built automatically when CONFIG_USB is specified in kernel config.
please note that this driver is EXPERIMENTAL and TENTATIVE. my first plan was to implement a USB library layer on alsa-lib, but it was found out that implementation of isochronous transfer via usbdevfs will bring some difficulty. so i started coding of a normal kernel driver at first. if any feasible solution to port such a stuff into user space, we should do that. but anyway, it's good to have a working code. we can move it to other place later. the current code is partly based on OSS/USB audio.c code, but apart from the parsing routine of audio-streaming, the resultant codes became fairly different from the oss code. almost all mixer controls are supported except for graphic equalizer. the mapping of topology might not be perfect, since alsa has a plain control structure. so far, i've tested only audio playback on my speaker, which is adaptive out without pitch/freq setting. xmms is working. the driver accepts the period size up to 1ms. a courageous user can try such a heavy condition. (me? did not yet :) 24bit / 96kHz should work, too, but i have no such a hardware. besides, capture is not tested at all. if you have a usb audio device, please test once. (oh, i forgot to mention the driver name - it's "snd-usb-audio" quite easy, isn't it?) if you find somewhat strange behavior (especially in mixer controls), please send me the output of lsusb. btw, when you use snd-usb-audio module, please make sure that you don't load OSS audio.o together. hotplug likely loads both modules at the same time. ciao, Takashi _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas -- http://devcon.sprintpcs.com/adp/index.cfm _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
