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From: Takashi Iwai <tiwai@suse.de>
To: Marc Titinger <titinger@digigram.com>
Cc: alsa-devel@lists.sourceforge.net
Subject: Re: BLOCK_TRANSFER flag in snd_pcm_hardware_t structure
Date: Thu, 20 Feb 2003 10:18:34 +0100	[thread overview]
Message-ID: <s5hu1ezfgyd.wl@alsa2.suse.de> (raw)
In-Reply-To: <08F1D234AF91E540BC1F43889E2A6AA70AEC08@digiexch.digigram.com>

At Wed, 19 Feb 2003 18:06:22 +0100,
Marc Titinger wrote:
> 
> Hi All,
> 
> I can't figure out from the code what are the implications of having
> the flag SNDRV_PCM_INFO_BLOCK_TRANSFER set in a
> snd_pcm_hardware_t.info field ? 

this is an inherited flag from the older version, and plays no big
role now.  it's still checked in the OSS emulation code, though.

> is this flag linked to the values of .period_bytes_min/max or .fifo_size ?

no.

> is this related to the hw_ptr granularity ?

no.  hw_ptr granularity is defined only by period_bytes_min (and
additional constraints if any).


Takashi


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      parent reply	other threads:[~2003-02-20  9:18 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-02-19 17:06 BLOCK_TRANSFER flag in snd_pcm_hardware_t structure Marc Titinger
2003-02-19 21:48 ` Jaroslav Kysela
2003-02-20  9:18 ` Takashi Iwai [this message]

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