From: Clemens Ladisch <clemens@ladisch.de>
To: Martin schmidt <schmidtmartin00@googlemail.com>
Cc: alsa-devel@alsa-project.org
Subject: Re: Alsa asynchonus playnback
Date: Tue, 29 Nov 2011 16:14:23 +0100 [thread overview]
Message-ID: <4ED4F6CF.8040004@ladisch.de> (raw)
In-Reply-To: <CAOONfQsONoj1bokU9xnQz6MvDps=o9M_3Bfk=zOEXv=PLiQJGA@mail.gmail.com>
Martin schmidt wrote:
> my problem is, the sound has an Echo (in german Hall-Effekt).
>
> int write_to_audiostream(short*buf)
> {
> memcpy(audiobuffer[audiobuffercounter],buf,audio_buffersize*sizeof(short));
> int w= snd_pcm_writei (pcm_handle, audiobuffer[audiobuffercounter], 2* audio_buffersize);
This looks correct (as long as the buffer is correctly filled).
Do you ever check w?
> audiobuffercounter = ++audiobuffercounter % 10;
It is a bad idea to disable compiler warnings, or to not heed them.
> in a Timer-Event
Why a timer? How is the timer synchronized to the sample clock?
Regards,
Clemens
prev parent reply other threads:[~2011-11-29 15:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-29 11:28 Alsa asynchonus playnback Martin schmidt
2011-11-29 13:29 ` Clemens Ladisch
[not found] ` <CAOONfQsONoj1bokU9xnQz6MvDps=o9M_3Bfk=zOEXv=PLiQJGA@mail.gmail.com>
2011-11-29 15:14 ` Clemens Ladisch [this message]
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