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From: Raymond Yau <superquad.vortex2@gmail.com>
To: Arun Raghavan <arun@accosted.net>
Cc: ALSA Development Mailing List <alsa-devel@alsa-project.org>,
	Lars-Peter Clausen <lars@metafoo.de>,
	Takashi Iwai <tiwai@suse.de>,
	clemens@ladisch.de, Tanu Kaskinen <tanu.kaskinen@linux.intel.com>,
	David Henningsson <david.henningsson@canonical.com>
Subject: Re: PulseAudio and SNDRV_PCM_INFO_BATCH
Date: Mon, 15 Jun 2015 11:42:59 +0800	[thread overview]
Message-ID: <CAN8ccia_Dy+WBD4NOi3ot4o9v0rbzG2CL3qEA+h1ZwQX_H5Ebw@mail.gmail.com> (raw)
In-Reply-To: <CACuU-+gmSj7rw8h6scpokXgMrL8QFr8a+xt2hH-4yLy=3POc5A@mail.gmail.com>

> > I'd like to bring this one up again, since we are currently in the
> > sub-optimal position of forcing ~100 ms latency on USB devices. The
> > original thread is here --
> >
http://mailman.alsa-project.org/pipermail/alsa-devel/2013-December/069666.html
>
> While we sort this out, though, is there an upper bound on the USB
> transfer size (that we could then use a rewind safety margin)? We
> might be able to use this as a workaround till this can be fixed
> properly.

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/usb?id=976b6c064a957445eb0573b270f2d0282630e9b9

Seem there are differences between high speed devices and others

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/usb?id=a93455e1c301ce2a4cae11682359fd2067a8fd30

Do usb wireless audio different from others ?

  parent reply	other threads:[~2015-06-15  3:43 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-12 12:29 PulseAudio and SNDRV_PCM_INFO_BATCH Arun Raghavan
2015-06-12 12:32 ` Arun Raghavan
2015-06-12 13:43   ` Alexander E. Patrakov
2015-06-12 13:57     ` Alexander E. Patrakov
2015-06-17  3:04     ` Raymond Yau
2015-06-17  3:38       ` Alexander E. Patrakov
2015-06-15  3:42   ` Raymond Yau [this message]
2015-06-15  8:03 ` Lars-Peter Clausen
2015-06-15 11:39   ` Raymond Yau
2015-06-15 12:01     ` Lars-Peter Clausen
2015-06-15 13:34       ` Raymond Yau
2015-06-15 14:16         ` Lars-Peter Clausen
2015-06-16  2:33           ` Raymond Yau
2015-06-17  8:27             ` Lars-Peter Clausen
2015-06-17  9:19               ` Takashi Iwai
2015-06-17 15:09                 ` David Henningsson
2015-06-17 16:48                   ` Alexander E. Patrakov
2015-06-18  3:15                     ` Raymond Yau
2015-06-19 11:19                       ` Alexander E. Patrakov
2015-06-19  1:17                   ` Raymond Yau
2015-06-19 11:32                   ` Takashi Iwai
2015-06-20  3:24                     ` Raymond Yau
2015-06-20  6:17                     ` Raymond Yau
2015-06-22  2:35           ` Raymond Yau
2015-06-22  6:43             ` Lars-Peter Clausen
2015-06-22  7:49               ` Raymond Yau
2015-06-22  9:41               ` Clemens Ladisch
2015-06-22 11:54                 ` Raymond Yau
2015-06-22 12:10                   ` Alexander E. Patrakov
2015-06-22 12:34                     ` Raymond Yau
2015-06-22 12:49                       ` Alexander E. Patrakov
2015-06-22 15:50                         ` Raymond Yau
2015-06-22 16:28                           ` Alexander E. Patrakov
2015-06-24  5:51                             ` Raymond Yau
2015-06-22 22:52                     ` Takashi Sakamoto
2015-06-27 15:28   ` Alexander E. Patrakov
2015-06-27 17:15     ` Clemens Ladisch
2015-06-27 17:58       ` Alexander E. Patrakov
2015-06-28  2:09         ` Raymond Yau

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