From: "Alexander E. Patrakov" <patrakov@gmail.com>
To: Raymond Yau <superquad.vortex2@gmail.com>
Cc: Takashi Iwai <tiwai@suse.de>,
ALSA Development Mailing List <alsa-devel@alsa-project.org>,
David Henningsson <david.henningsson@canonical.com>,
Takashi Sakamoto <o-takashi@sakamocchi.jp>
Subject: Re: Master Plan on rewinding
Date: Sat, 13 Sep 2014 16:43:26 +0600 [thread overview]
Message-ID: <54141FCE.7010806@gmail.com> (raw)
In-Reply-To: <CAN8ccibVYiDO8_rZYS-NR5A_QB3B0HA_7qZX8EMm8w_ANx6kaw@mail.gmail.com>
13.09.2014 14:57, Raymond Yau wrote:
>
> >>
> >> >
> >> > On my desktop PC, on snd-hda-intel with analog outputs for S16LE
> >> stereo, the granularity is 32 bytes (= 8 samples), and I get the pointer
> >> granularity of 64 bytes (=16 samples) over HDMI. The minimum period size
> >> is 32 samples in both cases.
> >>
> >> Do you mean hda-Intel does not support arbritray period size when you
> >> say the granularity is 32 bytes ?
> >>
> >> However the granularity of the emulated hda sound card inside any VM
> >> depend on the vm and the backend audio system and sound card
> >
> >
> > The precise meaning is defined here:
> >
> > http://mailman.alsa-project.org/pipermail/alsa-devel/2014-May/076475.html
>
> Do you mean the different hda controllers may have different granularity ?
Yes. My two hda controllers have different granularity.
> Do your two hda controllers have different Fifo size ?
If you mean the result of snd_pcm_hw_params_get_fifo_size(), then both
cards return 0. I call this function after snd_pcm_hw_params(), as
recommended by the documentation.
--
Alexander E. Patrakov
next prev parent reply other threads:[~2014-09-13 10:43 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 [this message]
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
2014-09-21 10:56 ` Alexander E. Patrakov
2014-09-22 3:27 ` Raymond Yau
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