The name hint does not define any device for recording if you run alsa-lib/test/namehint.c , you should notice that front device is used for "Front Speakers". Most likely you cannot use this "front" device for recording The "pulse" device is in the list since I am using Fedora 10 ./namehint NAMEfront:CARD=au8830,DEV=0|DESCAureal Vortex au8830, adb Front speakers NAMEsurround40:CARD=au8830,DEV=0|DESCAureal Vortex au8830, adb 4.0 Surround output to Front and Rear speakers NAMEiec958:CARD=au8830,DEV=0|DESCAureal Vortex au8830, spdif IEC958 (S/PDIF) Digital Audio Output|IOIDOutput NAMEnull|DESCDiscard all samples (playback) or generate zero samples (capture) NAMEpulse|DESCPulseAudio Sound Server NAMEdefault|DESCDefault NAMEfront:CARD=Intel,DEV=0|DESCHDA Intel, AD198x Analog Front speakers NAMEsurround40:CARD=Intel,DEV=0|DESCHDA Intel, AD198x Analog 4.0 Surround output to Front and Rear speakers NAMEsurround41:CARD=Intel,DEV=0|DESCHDA Intel, AD198x Analog 4.1 Surround output to Front, Rear and Subwoofer speakers NAMEsurround50:CARD=Intel,DEV=0|DESCHDA Intel, AD198x Analog 5.0 Surround output to Front, Center and Rear speakers NAMEsurround51:CARD=Intel,DEV=0|DESCHDA Intel, AD198x Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers NAMEsurround71:CARD=Intel,DEV=0|DESCHDA Intel, AD198x Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers NAMEiec958:CARD=Intel,DEV=0|DESCHDA Intel, AD198x Digital IEC958 (S/PDIF) Digital Audio Output arecord --list-device **** List of CAPTURE Hardware Devices **** card 1: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog] Subdevices: 3/3 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 card 1: Intel [HDA Intel], device 1: AD198x Digital [AD198x Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 2009/9/12 David Henningsson <launchpad.web@xxxxxxxxxxxxxx> > Raymond Yau skrev: > > It seem to me that name hint is not suitable for displaying recording > > devices > > But what should I then use? snd_card_xxx will not show the pulse device, > snd_names_list is deprecated, and snd_config_xxx is not recommended either. > > > You can get low latency by using hw device since PA use maximum buffer in > > order to save power comsumption for those notebook / netbook. > > > > If your application require high quality (bypass any SRC) , you may need > to > > capture using hardware rate and format instead of using plughw > > I will not need low latency for this application, but avoiding SRC would > probably be a good thing. But I assume the plug handling does not do any > SRC if it can avoid it by adjusting the hardware? > > > For HDA , it support multiple streamming. some HDA codecs (e.g. alc88x > and > > ad198x) have 3 ADC ( which you can capture three stereo streams > concurrently > > from internal mic, external mic and line in ) > > > > The main problem of the recording audio application is unable to select > the > > correct mixer control of the three capture sources > > What I would like would my enumeration function to return in this case > would be four entries, one for each ADC and one for them all combined (6 > channels, multi-channel recording). > > // David > > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
