[alsa-devel] A&H Zed R16 not completely working (DICE Jr)

[Allan Klinbail]

Thanks for your reply.


This isn't really suitable yet to replace FFADO
.
It provides this as separate devices so I cannot access all channels at the
same time in jack as in FFADO.

Although I don't typically use the ADAT ports other might, however I am
always using a combination of channels 1-16 and channels 17 & 18 combined,
sometimes all of them.
The device is a hardware mixing desk and all ports are designed to be used
simultaneously..

Latency performance is also much worse. FFADO will allow a buffer size of
64, ALSA will not start below 256.
I prefer to work at 128 or lower.


Here is the output you requested.



root at kxdaw:/home/allan/Downloads#  cat /proc/asound/card1/dice
sections:
  global: offset 10, size 95
  tx: offset 105, size 142
  rx: offset 247, size 282
  ext_sync: offset 529, size 4
  unused2: offset 0, size 0
global:
  owner: ffc1:000100000000
  notification: 00000040
  nick name: ZED R16
  clock select: internal 44100
  enable: 1
  status: locked 44100
  ext status: 000000c0
  sample rate: 44100
  version: 1.0.11.0
  clock caps: 44100 48000 88200 96000 adat internal
  clock source names: AES12\AES34\AES56\AES78\AES_ANY\ADAT\ADAT_AUX\Word
Clock\Unused\Unused\Unused\Unused\Internal\\
tx 0:
  iso channel: 0
  audio channels: 16
  midi ports: 1
  speed: S400
  names:
CH1/CH1/2\CH2/CH1/2\CH3/CH3/4\CH4/CH3/4\CH5/CH5/6\CH6/CH5/6\CH7/CH7/8\CH8/CH7/8\CH9/CH9/10\CH10/CH9/10\CH11/CH11/12\CH12/CH11/12\CH13/CH13/14\CH14/CH13/14\CH15/CH15/16\CH16/CH15/16\\
  ac3 caps: 00000000
  ac3 enable: 00000000
tx 1:
  iso channel: 1
  audio channels: 10
  midi ports: 0
  speed: S400
  names: L/MAIN L/R\R/MAIN
L/R\ADAT1/ADAT1/2\ADAT2/ADAT1/2\ADAT3/ADAT3/4\ADAT4/ADAT3/4\ADAT5/ADAT5/6\ADAT6/ADAT5/6\ADAT7/ADAT7/8\ADAT8/ADAT7/8\\
  ac3 caps: 00000000
  ac3 enable: 00000000
rx 0:
  iso channel: 2
  sequence start: 0
  audio channels: 16
  midi ports: 0
  names:
CH1/CH1/2\CH2/CH1/2\CH3/CH3/4\CH4/CH3/4\CH5/CH5/6\CH6/CH5/6\CH7/CH7/8\CH8/CH7/8\CH9/CH9/10\CH10/CH9/10\CH11/CH11/12\CH12/CH11/12\CH13/CH13/14\CH14/CH13/14\CH15/CH15/16\CH16/CH15/16\\
  ac3 caps: 00000000
  ac3 enable: 00000000
rx 1:
  iso channel: 3
  sequence start: 0
  audio channels: 10
  midi ports: 0
  names: L/MAIN L/R\R/MAIN
L/R\ADAT1/ADAT1/2\ADAT2/ADAT1/2\ADAT3/ADAT3/4\ADAT4/ADAT3/4\ADAT5/ADAT5/6\ADAT6/ADAT5/6\ADAT7/ADAT7/8\ADAT8/ADAT7/8\\
  ac3 caps: 00000000
  ac3 enable: 00000000
ext status:
  clock source: internal
  locked: 1
  rate: 44100
  adat user data: -






On Thu, Apr 21, 2016 at 1:21 AM Takashi Sakamoto <o-takashi at sakamocchi.jp>
wrote:

> Hi,
>
> On Apr 20 2016 23:31, Allan Klinbail wrote:
> > Using kernel 4.4.0 from Ubuntu
> >
> > The ALSA driver limited the device to only 16 inputs and outputs, however
> > it has a total capability of 26
> > This is comprises of 16 inputs and outputs on the desk channels, a stereo
> > main pair of outputs and inputs for the master bus
> > 8 additional ins and outs to support the ADAT ports on the back
> (availoable
> > in 44.1 and 48 khz modes, but not 88.2 or 96 Khz
>
> This is fixed in Linux kernel 4.6.
> http://mailman.alsa-project.org/pipermail/alsa-devel/2016-March/105462.html
>
> The backported codes are available in my private repository. After
> installing, You can see two PCM character devices to handle these PCM
> channels.
> https://github.com/takaswie/snd-firewire-improve
>
> To clarify the capabilities of your model, please show me output of proc
> node, like
>
> $ cat /proc/asound/card1/dice
> sections:
>   global: offset 10, size 95
>   tx: offset 105, size 142
> ...
>
>
> Regards
>
> Takashi Sakamoto
>