From: "Volker Rümelin" <vr_qemu@t-online.de>
To: "Marc-André Lureau" <marcandre.lureau@gmail.com>
Cc: "Kővágó, Zoltán" <dirty.ice.hu@gmail.com>,
QEMU <qemu-devel@nongnu.org>, "Gerd Hoffmann" <kraxel@redhat.com>
Subject: Re: [Qemu-devel] [PATCH] pulseaudio: reduce 24s recording latency
Date: Sat, 12 Sep 2015 13:23:56 +0200 [thread overview]
Message-ID: <55F40B4C.5000101@t-online.de> (raw)
In-Reply-To: <CAJ+F1C+fsRQfE+ofjgxFwEs+o+f9jFrVRSJee4eGqOyuJV4dXg@mail.gmail.com>
Hi,
Am 12.09.2015 um 01:22 schrieb Marc-André Lureau:
>> Current code doesn't provide pulseaudio buffer attributes for
>> recording. Without buffer attributes pulseaudio uses a default
>> buffer of 4MB. 4MB is approximately 24s 16bit stereo audio
>> data at 44.1kHz.
> Why isn't the buffer processed as soon as some data is available?
>
>
On start up qemu opens a connection to pulseaudio in function
qpa_init_in and pulseaudio immediately starts recording to the 4MB
ringbuffer. The qemu guest, Windows 8.1 in my case, doesn't consume that
data if there is no process listening on the audio interface. Now if the
guest starts recording, it will see audio data which was recorded 24s ago.
Regards,
Volker
next prev parent reply other threads:[~2015-09-12 11:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-11 19:03 [Qemu-devel] [PATCH] pulseaudio: reduce 24s recording latency Volker Rümelin
2015-09-11 23:22 ` Marc-André Lureau
2015-09-12 11:23 ` Volker Rümelin [this message]
2015-09-12 14:35 ` Kővágó Zoltán
2015-09-12 19:55 ` Volker Rümelin
2015-09-12 12:07 ` Marc-André Lureau
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=55F40B4C.5000101@t-online.de \
--to=vr_qemu@t-online.de \
--cc=dirty.ice.hu@gmail.com \
--cc=kraxel@redhat.com \
--cc=marcandre.lureau@gmail.com \
--cc=qemu-devel@nongnu.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.