[Alsa-user] MIDI subscription

2017-12-28 Thread Paul D. DeRocco
n of a program subscribing to a port, and a client subscribing itself to a port, and a third client subscribing to two ports. What do these mean? And why are SUBS permission bits needed in some cases but not others? In short, what IS "subscription"? -- Ciao, Paul D. DeRocco

Re: [Alsa-user] Slot assignment not working

2017-10-09 Thread Paul D. DeRocco
> > Paul D. DeRocco wrote: > > Can this parameter be supplied on the kernel command line > > as snd.slots=...? > From: Clemens Ladisch via Alsa-user > > Yes; this is possible for all parameters. My first try was to leave snd as a built-in module, and pass the slo

Re: [Alsa-user] Slot assignment not working

2017-10-08 Thread Paul D. DeRocco
e the names the same as in /proc/asound/modules? The subsidiary ones are, but snd isn't. Can this parameter be supplied on the kernel command line as snd.slots=...? Or would it be better to recompile the kernel with snd as a module? If so, what's the CONFIG_ symbol? -- Ciao, Paul D. D

Re: [Alsa-user] Slot assignment not working

2017-10-08 Thread Paul D. DeRocco
> From: Clemens Ladisch via Alsa-user > > Paul D. DeRocco wrote: > >> Paul D. DeRocco wrote: > >>> options snd slots=snd-soc-hifiberry-dacplus,snd-usb-audio > >>> > >>> midiC0D0 a USB MIDI device > >>> midiC1D0

Re: [Alsa-user] Slot assignment not working

2017-10-08 Thread Paul D. DeRocco
> From: Clemens Ladisch via Alsa-user > > Paul D. DeRocco wrote: > > options snd slots=snd-soc-hifiberry-dacplus,snd-usb-audio > > > > midiC0D0 a USB MIDI device > > midiC1D0 another USB MIDI device > > pcmC2D0p

[Alsa-user] Slot assignment not working

2017-10-07 Thread Paul D. DeRocco
parameter as an option to the individual drivers, but the hifiberry doesn't understand it. Did something change in 2.1.2? Or am I doing something wrong? Is "snd" no longer the name of the top level ALSA sound module? I don't see it listed in lsmod. -- Ciao, Paul D. De

[Alsa-user] Problem reading back periods

2017-09-13 Thread Paul D. DeRocco
asking because my sound output isn't working, even though those parameters seem reasonable and it's not complaining. -- Ciao, Paul D. DeRocco Paulmailto:pdero...@ix.netcom.com -- Check out

[Alsa-user] Advice on snd_pcm_writei sizes

2017-09-10 Thread Paul D. DeRocco
? Alternatively, would the extra overhead of reducing the period size to 64 (96KHz stereo 32-bit LE on a Raspberry Pi 3) be significant? -- Ciao, Paul D. DeRocco Paulmailto:pdero...@ix.netcom.com

Re: [Alsa-user] Controlling card number assignments

2017-07-07 Thread Paul D. DeRocco
ent name with each USB port, even if it doesn't gracefully handle cases like external hubs. -- Ciao, Paul D. DeRocco Paulmailto:pdero...@ix.netcom.com -- Check out the vibrant tec

Re: [Alsa-user] Controlling card number assignments

2017-07-07 Thread Paul D. DeRocco
name comes up as "Interface", and an E-Mu device called "XMidiX1". It would be really nice to have some geographic way to refer to them, based on the USB port they're plugged into. But I guess that's something I should ask about on the systemd list. -- Ciao, P

[Alsa-user] Controlling card number assignments

2017-07-06 Thread Paul D. DeRocco
? Or barring that, what else can I do so that my app can use fixed names for referring to both? -- Ciao, Paul D. DeRocco Paulmailto:pdero...@ix.netcom.com -- Check out the vibrant tech community

[Alsa-user] asound.state

2016-03-19 Thread Paul D. DeRocco
b, or arbitrary? How about "IEC958 Playback Switch"? What about "index 16"? Is the "access" item alsalib's way of telling me that this is a read/write variable, which it knows from the driver, or is it somebody's way of telling alsalib that this is a read/write variab

[Alsa-user] Trying to get S/PDIF output working

2013-12-06 Thread Paul D. DeRocco
the digital output. Is there something in Alsa I'm supposed to do to enable this output? And if it's not enabled, why can I successfully open it and write to it? -- Ciao, Paul D. DeRocco Paulmailto:pdero...@ix.netcom.com

[Alsa-user] Trying to get S/PDIF output working

2013-12-06 Thread Paul D. DeRocco
the digital output. Is there something in Alsa I'm supposed to do to enable this output? And if it's not enabled, why can I successfully open it and write to it? -- Ciao, Paul D. DeRocco Paulmailto:pdero...@ix.netcom.com

[Alsa-user] Volume control range

2013-07-06 Thread Paul D. DeRocco
those are really millibels.) So how does one programmatically find the range of a control? I'd prefer to have plain linear voltage control, but I'll take anything I can get as long as I know what the shape of the curve is. -- Ciao, Paul D. DeRocco Paulmailto:pdero

Re: [Alsa-user] Volume control range

2013-07-06 Thread Paul D. DeRocco
of -65.00 For the API, the dB values are (integer_value_returned_from_the_API_call / 100) in order to avoid floating point. Does this help? Yes. I'll have to copy amixer from my Ubuntu system to see this, because my embedded system only has alsamixer. -- Ciao, Paul D. DeRocco Paul

[Alsa-user] Some questions about USB MIDI driver

2013-04-12 Thread Paul D. DeRocco
? -- Ciao, Paul D. DeRocco Paulmailto:pdero...@ix.netcom.com -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs

[Alsa-user] Master volume control

2013-02-27 Thread Paul D. DeRocco
hope I never have to know another thing about ALSA, once I've found the answer to this one last question. Thanks in advance. -- Ciao, Paul D. DeRocco Paulmailto:pdero...@ix.netcom.com