From: Lucas <jaffa225man@gmail.com>
To: "Keith A. Milner" <maillist@superlative.org>
Cc: alsa-devel@alsa-project.org
Subject: Re: [PATCH] ALSA: usb-audio: Apply implicit feedback mode for BOSS devices
Date: Tue, 20 Apr 2021 10:42:39 -0500 [thread overview]
Message-ID: <CAOsVg8pY80Vgi1XhzzFmQ4bBxK+1boksw7RM7_avMd4hqE0ERQ@mail.gmail.com> (raw)
In-Reply-To: <CAOsVg8p=yikaRQ-=RWdO8nWdC70tnw4kQ17KM-smShQvujrRJg@mail.gmail.com>
Sorry, in my haste, I mistakenly wrote:
> For me, silence due to the wrong line takes the form of unheard output
> playback, while still working for input capture, so I'm not sure this has
> any bearing on your issue.
>
Output playback silence occurred in one device (Roland INTEGRA-7 on higher
sample rates) which had the line IMPLICIT_FB_FIXED_DEV and needed
IMPLICIT_FB_BOTH_DEV. So it's the opposite situation. Capture issues,
such as yours, with arecord were exactly what I saw when a device used
IMPLICIT_FB_BOTH_DEV while needing IMPLICIT_FB_FIXED_DEV instead.
Here's one of my previous examples of a device not compatible with
IMPLICIT_FB_BOTH_DEV:
> Roland VG-99 doesn't capture, but plays well:
> arecord -D hw:VG99 -f S24_3LE -r 44100 -c 2 ./file.wav
> Recording WAVE './file.wav' : Signed 24 bit Little Endian in 3bytes, Rate
> 44100 Hz, Stereo
> arecord: xrun:1672: read/write error, state = PREPARED
>
> aplay -D hw:VG99 -f S24_3LE -r 44100 -c 2 ./other-file.wav
> Playing WAVE './other-file.wav' : Signed 24 bit Little Endian in 3bytes,
> Rate 44100 Hz, Stereo
>
I'm sorry if that caused confusion. It does seem your issue could be the
very same as the VG-99's above. That is, a device without "Asynchronous"
"Synch Type" for either of its "IN" or "OUT" endpoints. In that case,
IMPLICIT_FB_FIXED_DEV should work.
Thanks, and sorry,
Lucas
next prev parent reply other threads:[~2021-04-20 15:43 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-14 8:32 [PATCH] ALSA: usb-audio: Apply implicit feedback mode for BOSS devices Takashi Iwai
2021-04-14 15:08 ` Mike Oliphant
2021-04-19 13:45 ` Keith A. Milner
2021-04-20 4:20 ` Lucas
2021-04-20 15:42 ` Lucas [this message]
2021-04-20 16:36 ` Takashi Iwai
2021-04-21 4:59 ` Lucas
2021-04-21 8:59 ` Takashi Iwai
2021-04-21 16:39 ` Lucas
2021-04-22 4:05 ` Lucas
2021-04-22 4:10 ` Lucas
2021-04-22 12:02 ` Takashi Iwai
2021-04-22 14:41 ` Keith A. Milner
2021-04-22 15:31 ` Lucas
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CAOsVg8pY80Vgi1XhzzFmQ4bBxK+1boksw7RM7_avMd4hqE0ERQ@mail.gmail.com \
--to=jaffa225man@gmail.com \
--cc=alsa-devel@alsa-project.org \
--cc=maillist@superlative.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).