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From: Clemens Ladisch <clemens@ladisch.de>
To: Raymond Yau <superquad.vortex2@gmail.com>
Cc: ALSA Development Mailing List <alsa-devel@alsa-project.org>,
	Takashi Iwai <tiwai@suse.de>,
	Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
	Takashi Sakamoto <o-takashi@sakamocchi.jp>,
	"Alexander E. Patrakov" <patrakov@gmail.com>,
	David Henningsson <david.henningsson@canonical.com>
Subject: Re: Master Plan on rewinding
Date: Sun, 21 Sep 2014 11:53:58 +0200	[thread overview]
Message-ID: <541EA036.5010707@ladisch.de> (raw)
In-Reply-To: <CAN8cciaXvOyEN8U6mG-1OYLOBQ9-9i030smaqbQz2zvqBnnKjQ@mail.gmail.com>

Raymond Yau wrote:
> Does snd-oxygen provide this position with granularity which is less than
> the minimum period size ?

Yes.  Its DMA controller uses a burst size of 32 bytes.  The pointer registers
are documented as reporting the position with 4-byte accuracy, but there were
problems when the period/buffer sizes were not aligned to 32 bytes.  I've set
the minimum period size to 64 bytes, just to be safe.


Regards,
Clemens

  parent reply	other threads:[~2014-09-21  9:53 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-07 15:16 Master Plan on rewinding Alexander E. Patrakov
2014-09-07 18:38 ` Tanu Kaskinen
2014-09-07 19:05   ` Alexander E. Patrakov
2014-09-07 20:51 ` Clemens Ladisch
2014-09-08  3:06   ` Raymond Yau
2014-09-08  7:31   ` Alexander E. Patrakov
2014-09-09  8:43     ` Clemens Ladisch
2014-09-09  8:55       ` Alexander E. Patrakov
2014-09-09  9:08         ` David Henningsson
2014-09-09  9:31           ` Alexander E. Patrakov
2014-09-21  2:02             ` Raymond Yau
2014-09-22 13:20               ` Lars-Peter Clausen
2014-09-22 13:36                 ` Alexander E. Patrakov
2014-09-22 13:44                   ` Lars-Peter Clausen
2014-09-23  8:29                   ` Raymond Yau
2014-09-23 10:22                     ` Alexander E. Patrakov
2014-09-09 13:45         ` Clemens Ladisch
2014-09-09 15:55           ` Alexander E. Patrakov
2014-09-09 16:09             ` Takashi Iwai
2014-09-07 23:12 ` David Henningsson
2014-09-09 19:56   ` Pierre-Louis Bossart
2014-09-10  5:38     ` Alexander E. Patrakov
2014-09-08  7:34 ` Lars-Peter Clausen
2014-09-08  7:59 ` David Henningsson
2014-09-08  8:46   ` Alexander E. Patrakov
2014-09-08  9:26     ` David Henningsson
2014-09-08 10:21       ` Alexander E. Patrakov
2014-09-09  8:43         ` Clemens Ladisch
2014-09-11  3:49 ` Raymond Yau
2014-09-11  4:19   ` A. C. Censi
2014-09-13  9:15     ` Raymond Yau
2014-09-11  5:28   ` Alexander E. Patrakov
2014-09-11  6:21     ` Raymond Yau
2014-09-13  8:57     ` Raymond Yau
2014-09-13 10:43       ` Alexander E. Patrakov
2014-09-13 11:33         ` Raymond Yau
2014-09-13 11:36           ` Alexander E. Patrakov
2014-09-13 18:35 ` Alexander E. Patrakov
2014-09-14 11:37   ` Raymond Yau
2014-09-14 12:07     ` Alexander E. Patrakov
2014-09-15  2:43       ` Raymond Yau
2014-09-15  9:19       ` Takashi Iwai
2014-09-15  9:58         ` Alexander E. Patrakov
2014-09-15 10:08           ` Takashi Iwai
2014-09-15 17:01             ` Pierre-Louis Bossart
2014-09-15 17:14               ` Alexander E. Patrakov
2014-09-15 18:08                 ` Takashi Iwai
2014-09-18  1:15                   ` Raymond Yau
2014-09-21  9:22                     ` Alexander E. Patrakov
2014-09-21  9:53                     ` Clemens Ladisch [this message]
2014-09-21 10:56                       ` Alexander E. Patrakov
2014-09-22  3:27                       ` Raymond Yau

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