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From: Clemens Ladisch <clemens@ladisch.de>
To: James Courtier-Dutton <james.dutton@gmail.com>
Cc: alsa-devel@alsa-project.org, brunal2496 gmail <brunal2496@gmail.com>
Subject: Re: Exemple of source code for capture without using callback
Date: Thu, 22 Oct 2009 17:06:03 +0200	[thread overview]
Message-ID: <4AE074DB.4030600@ladisch.de> (raw)
In-Reply-To: <ad2655cb0910220740k5ef0f931j7f0ec48cb5d01cec@mail.gmail.com>

James Courtier-Dutton wrote:
> 2009/10/20 brunal2496 gmail <brunal2496@gmail.com>:
> > I've read everywhere that using callback is a bad method to use the
> > alsa drivers.
> 
> This is wrong. callback is the best method.

But _not_ the snd_async_add_pcm_handler function, which is evil.
(This is the only ALSA PCM function that mentions "callback" in its
documentation, so these are often confused.)

The 'good' callback method means that the audio driver informs the
application when its wants to have new audio data, not the other way.


Best regards,
Clemens

  reply	other threads:[~2009-10-22 15:06 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-20 14:49 Exemple of source code for capture without using callback brunal2496 gmail
2009-10-22 14:40 ` James Courtier-Dutton
2009-10-22 15:06   ` Clemens Ladisch [this message]
2009-10-22 19:47     ` James Courtier-Dutton
2009-10-23  9:39       ` brunal2496 gmail

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