L_SW_PARAMS,
then start transmission by ioctl with SNDRV_PCM_IOCTL_START.
In detail, please refer to the sample program.
[1]
https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/tree/sound/core/pcm_native.c#n749
[2]
https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/tree/sound/core/pcm_lib.c#n2244
Cheers
Takashi Sakamoto
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Hi,
On Thu, Dec 17, 2020 at 09:55:49AM +0900, Susie B. wrote:
> On Sun, 13 Dec 2020 22:32:17 +0900
> Takashi Sakamoto wrote:
> > Additionally, amixer doesn't parse the value with 'dB' suffix. It can
> > handle two types of values; raw control value and pe
advice or suggestions to solve these problems.
>
> [1] "Owner’s Manual Version 2.2 for Windows" p.39
> http://files.echoaudio.com/manuals/audiofire_windows_manual_v2.2.pdf
In my opinion, basic ALSA tools (amixer, alsamixer, and alsactl)
includes ma
xtra care of the jitter so that any driver
processes content of isochronous packet of IEEE 1394 within interval of
interrupt scheduled by the driver via 1394 OHCI.
Regards
Takashi Sakamoto
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ev/fw* before running the
executable binary
4. run cargo run in the cloned directory or run the executable directly
by the normal user
The service programs are not so special, usual programs. No priviledge
is required to run the programs as long as the user has enough acces
Hi,
On Fri, Nov 20, 2020 at 09:00:51AM +0900, Susie B. wrote:
> On Wed, 18 Nov 2020 15:35:59 +0900 Takashi Sakamoto
> wrote:
>
> > Just now I pushed 'topic/buildable-in-kernel4.5-or-later' remote repository.
> > https://github.com/alsa-project/alsa-gobject/tree/
Hi,
On Wed, Nov 18, 2020 at 10:27:37AM +0900, Takashi Sakamoto wrote:
> I should mention that the alsa-gobject is an application of UAPI of Linux
> kernel as well as GLib/GObject(+GObject Instrospection), sorry. The cause
> of error is building for Linux kernel version 4.6 or before. Th
ve no idea where I went wrong in the above steps.
> But I would appreciate any help or suggestion to resolve these errors.
Once building the 'build' directory, you just run 'ninja' command in the
directory.
[1]
https://github.com/alsa-project/alsa-gobject/blob/master/.github/workflows/build.yml
Thanks
Takashi Sakamoto
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Hi,
On Sun, Nov 15, 2020 at 09:26:18AM +0900, Susie B wrote:
> On Fri, 13 Nov 2020 20:48:02 +0900, Takashi Sakamoto
> wrote:
> > The batch of code is required to implement control element according to
> > vendor-specific protocol. In my assumption, it may be additional 20,000
an see my Request-For-Test in LAD[2] and alsa-devel[3]. If you are
interested, let you satisfy build dependencies and try building and
testing.
[1] https://github.com/alsa-project/snd-firewire-ctl-services/
[2]
http://linux-audio.4202.n7.nabble.com/RFT-ALSA-control-service-programs-for-Fi
recommend you to use ALSA hwdep interface for the
functionality in your device, instead of ALSA control interface.
You can see some drivers have implementation for userspace applications
to execute request and wait for response; e.g. snd-fireworks.
But I note that the summary comes from my co
ion
against any operation for control element.
The other options are case-by-case. At least, you need to describe each
detail for better discussion.
Regards
Takashi Sakamoto
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On Thu, Aug 06, 2020 at 11:34:12PM +0800, Tom Yan wrote:
> On Thu, 6 Aug 2020 at 22:47, Takashi Sakamoto wrote:
> > As long as I know, neither tools in alsa-utils/alsa-tools nor pulseaudio
> > use the lock mechanism. In short, you are the first person to address
> > to the i
lt; ----
>From 54832d11b9056da2883d6edfdccaab76d8b08a5c Mon Sep 17 00:00:00 2001
From: Takashi Sakamoto
Date: Thu, 6 Aug 2020 19:34:55 +0900
Subject: [PATCH] ALSA: control: add new ioctl request for compare_and_swap
operation to element value
This is a rough implementation as a solutio
of 'struct snd_ctl_elem_value' except
for user-defined control element set.
Here, would I ask your opinion to the lock/get/set/unlock actions
from userspace? It can really not be one of solution for the issue?
[1] https://en.wikipedia.org/wiki/Compare-and-swap
Regards
Takashi Sa
expected
amixer: Control hw:1 element write error: Operation not permitted
my program unlocks: "Headphone Playback Volume"
expected
: values=0,0
...
```
[1]
https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/tree/include/uapi/sound/asound.h#n1083
[2]
https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/tree/sound/core/control.c#n1108
[3]
https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/tree/sound/core/control.c#n122
[4]
https://www.alsa-project.org/alsa-doc/alsa-lib/group___control.html#ga1fba1f7e08ab11505a617af5d54f4580
[5] https://github.com/alsa-project/alsa-gobject
Regards
Takashi Sakamoto
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eset and failure of asynchronous
transmission is a diagnostic of disorder, typically capacitor of powering.
If you don't mind, it's better to open the box and check implemented capacitors.
(Actually my device is repaired one.)
Regards
Takashi Sakamoto
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ss in this case. For example, you
can use lsof(8) to the PCM character device. In recent standard Linux
desktop environment, it might be PulseAudio, I guess.
Regards
Takashi Sakamoto
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created device fw0: GUID
> 00110666010a, S400
> [1.625234] firewire_core :04:00.0: phy config: new root=ffc1,
> gap_count=5
> [4.642950] firewire_core :04:00.0: created device fw1: GUID
> 00a07ea4, S400
>
ll you do.
I note that ALSA fireworks driver still causes periodical noise due to
protocol implementation. In detail, please refer to my former post[3].
[1] https://github.com/takaswie/hinawa-utils
[2] https://github.com/takaswie/libhinawa
[3]
http://mailman.alsa-project.org/pipermail/alsa-devel
Regards
Takashi Sakamoto
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nt_Initialize( &self->capture, alsaApi,
> inParams, StreamDirection_In, NULL != callback )' failed in
> 'src/hostapi/alsa/pa_linux_alsa.c', line: 2092 Expression
> 'PaAlsaStream_Initialize( stream, alsaHostApi, inputParameters,
> outputPa
l31
I note that Linux kernel 4.0 or former includes some bugs for this feature.
Regards
Takashi Sakamoto
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Access to Intel Xeon Phi processor-based developer platfo
device.
Could you please explain about the details of your experience and
environment as much as possible, so that we can realize them?
Regards
Takashi Sakamoto
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Hi Robin,
On Jun 27 20016 19:37, Robin Gareus wrote:
> On 06/27/2016 04:42 AM, Takashi Sakamoto wrote:
>> I've never used the 'freewheel' mode and I don't know exactly what it
>> effects.
>
> jackd suspends (or pauses?) the soundcard and l
ll
ffado-dbus-server manually in any terminals. To me, it's quite inconvenient.
That's the reason I recommend you to purchace another one. I know
there're many alternatives with more convenient features. It's 2016.
Regards
Takashi Sakamoto
---
ect to internal data processing of
jackd.
Well, in my opinion, it's inconvenient to use this unit due to its
quirk, which I reported in this thread:
https://sourceforge.net/p/ffado/mailman/message/35076716/
I re
self. No other ways.
On Apr 27 2016 00:19, Caleb Crome wrote:
> BTW, is this available for purchase?
Yes. They're in consumer market as 'recording equipment'.
Regards
Takashi Sakamoto
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Find and f
er over 8 (= SND_MIXER_SCHN_REAR_CENTER), the API returns "?".
In short, ALSA simple mixer API application cannot display proper name
for channel number over 8.
Furtheremore, 'alsamixer' has a limitation of d
tation was quite buggy and original intension was
already lost, according to the commit comment.
[ALSA] Remove PCM xfer_align sw params
http://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/?id=d948035a928400ae127c873fbf771389bee18949
Regards
Takashi Sakamoto
-
your expectation. And you should not
test with packages in PPA. PPA is just Private Package Archive. The
packages in PPA do not always go for official release.
Although I said some lectures, I wish this bug will be fixed in Ubuntu
snd-ice1712 is not
built for your kernel.
I don't know the reason, but for your information:
Collateral damage due to kernel configuration change enabling
CONFIG_ZONE_DEVICE (Kernel 4.4 amd64)
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1534647
Regards
Takashi Sakamoto
rget for the PCM substream.
Exceptionally, when you use PCM nodes with external plugins such as
'pulse', you can achieve it. In application side, PCM frames are
transferred by a single PCM handles, on the other hand, PulseAudio
daemon performs what you require.
Reg
r your sound card by typing:
$ modinfo snd-indigodjx
Regards
Takashi Sakamoto
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1
> stop_threshold : 1073741824
> silence_threshold: 0
> silence_size : 0
> boundary : 1073741824
> appl_ptr : 0
> hw_ptr : 0
As long as seeing your log, arecord uses three userspace PCM plugins
before accessing hardware.
Can you see the same ove
ease report with it.
Regards
Takashi Sakamoto
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On Feb 2 2015 10:36, Takashi Sakamoto wrote:
>> Is it possible to consider using a simple text based "generic"
>> controller until such time that persons with the right kind of
>> experience or knowledge create GUI based mixer interfaces?
>
> Or applications can
et the state by reading a certain addresses on the
unit as long as these addresses are not read-only. There'are no needs to
understand how to use GUI toolkit or D-Bus interface.
(Of cource I know that users prefer better abstructions to such raw
accesses. But there're too much models w
t we can do is to wait for someone who has interests in it.
Regards
Takashi Sakamoto
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Blaster Digital
Music SX at usb-:00:10.0-1,
Regards
(2011年09月04日 06:44), Takashi Sakamoto wrote:
> Hi,
>
> In Ubuntu Japanese Community forum, I help the person who cannot set the
> PCM output volume of USB device with amixer or alsamixer.
> https://forums.ubuntulinux.jp/viewtopic.p
index=1
Info: id=8, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN"
Volume: min=0, max=1, dBmin=0, dBmax=0
Unit: 9
Control: name="Digital In Playback Switch", index=1
Info: id=9, control=1, cmask=0x0, cha
Hi,
The bug is caused by debian patches, not ALSA original source.
See my report to Ubuntu's bug tracking system in launchpad.net.
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/832137
Regards
Takashi Sakamoto
(2011年08月29日 06:22), Muffinman wrote:
> Hello all,
>
&g
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