From: Stas Sergeev <stsp@aknet.ru>
To: Takashi Iwai <tiwai@suse.de>
Cc: alsa-devel@alsa-project.org
Subject: Re: underruns and strange code in pcm_rate.c (and patch)
Date: Thu, 08 Nov 2007 12:13:29 +0300 [thread overview]
Message-ID: <4732D339.5060509@aknet.ru> (raw)
In-Reply-To: <s5hbqa5th8e.wl%tiwai@suse.de>
Hello.
Takashi Iwai wrote:
> Not really. It checks appl_ptr of the client, not hw_ptr. appl_ptr
> is what app writes. So, as long as app writes only the period size,
> the hack isn't triggered.
No, its not that simple.
When the partially filled period
on slave appears, it then gets
populated back. Namely, snd_pcm_write_areas()
takes it via snd_pcm_avail_update().
It then adjusts the "frames" accordingly,
and then also "size" gets infected.
Then the hack triggers.
next prev parent reply other threads:[~2007-11-08 9:12 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-04 23:48 underruns and strange code in pcm_rate.c (and patch) Stas Sergeev
2007-11-06 11:29 ` Takashi Iwai
2007-11-06 14:47 ` James Courtier-Dutton
2007-11-06 17:14 ` Stas Sergeev
2007-11-07 11:28 ` Takashi Iwai
2007-11-07 10:40 ` Takashi Iwai
2007-11-06 16:10 ` Stas Sergeev
2007-11-07 10:54 ` Takashi Iwai
2007-11-07 17:16 ` underruns and strange code in pcm_rate.c Stas Sergeev
2007-11-07 14:23 ` Takashi Iwai
2007-11-07 18:52 ` Stas Sergeev
2007-11-08 3:36 ` Takashi Iwai
2007-11-08 8:09 ` Stas Sergeev
2007-11-08 5:38 ` Takashi Iwai
2007-11-08 9:05 ` Stas Sergeev
2007-11-08 6:17 ` Takashi Iwai
2007-11-08 18:34 ` Stas Sergeev
2007-11-09 16:20 ` Timur Tabi
2007-11-09 18:17 ` Stas Sergeev
2007-11-09 19:52 ` Timur Tabi
2007-11-09 20:00 ` Stas Sergeev
2007-11-09 20:06 ` Timur Tabi
2007-11-09 20:11 ` Lee Revell
2007-11-09 20:16 ` Timur Tabi
2007-11-09 20:30 ` Lee Revell
2007-11-09 20:33 ` Timur Tabi
2007-11-09 21:37 ` Lee Revell
2007-11-09 22:52 ` Stas Sergeev
2007-11-09 22:53 ` Timur Tabi
2007-11-12 12:12 ` Clemens Ladisch
2007-11-12 15:56 ` Timur Tabi
2008-01-31 20:49 ` Timur Tabi
2008-02-01 12:32 ` Takashi Iwai
2008-02-01 14:46 ` Timur Tabi
2008-02-01 15:07 ` Takashi Iwai
2008-02-01 15:18 ` Timur Tabi
2008-02-01 15:27 ` Takashi Iwai
2008-02-01 16:00 ` Timur Tabi
2007-11-07 18:40 ` underruns and strange code in pcm_rate.c (and patch) Stas Sergeev
2007-11-08 4:42 ` Takashi Iwai
2007-11-08 8:27 ` Stas Sergeev
2007-11-08 5:54 ` Takashi Iwai
2007-11-08 9:13 ` Stas Sergeev [this message]
2007-11-08 6:25 ` Takashi Iwai
2007-11-08 14:10 ` Alexander E. Patrakov
2007-11-06 13:56 ` Stas Sergeev
2007-11-08 20:06 ` Timur Tabi
2007-11-08 22:01 ` Timur Tabi
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