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From: Clemens Ladisch <clemens@ladisch.de>
To: Ankhit Vivekananda <ankhit.vivekananda@biscotti.com>,
	alsa-devel@alsa-project.org
Subject: Re: Use of snd_pcm_format_set_silence
Date: Wed, 20 Jan 2016 22:56:50 +0100	[thread overview]
Message-ID: <56A002A2.5070200@ladisch.de> (raw)
In-Reply-To: <CACaQK7C04jg3nP-7ijntq+ADEdO41+Ab1VpRDS1vwFXWAPPTHg@mail.gmail.com>

Ankhit Vivekananda wrote:
> I have an application where in I need to silence the first few samples of
> the buffer that is read from snd_pcm_readi(). In order to do this, I call
> the snd_pcm_format_set_silence() providing the same buffer that the
> snd_pcm_readi() reads to.
>
> 1) By doing this, is there going to be a timing delay due to the use of
> snd_pcm_format_set_silence()?

That function just modifies memory; it does not affect any PCM device.

> 2) Is snd_pcm_format_set_silence() the correct function to achieve this
> goal or are there better methods?

You already know your sample format; memset(0) might be simpler.


Regards,
Clemens

  reply	other threads:[~2016-01-20 21:57 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-20 21:18 Use of snd_pcm_format_set_silence Ankhit Vivekananda
2016-01-20 21:56 ` Clemens Ladisch [this message]
2016-01-20 22:17   ` Ankhit Vivekananda
2016-01-21  7:43     ` Clemens Ladisch
2016-01-21 16:29       ` Ankhit Vivekananda

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