From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Takashi Iwai <tiwai@suse.de>
Cc: alsa-devel@alsa-project.org
Subject: Re: [RFC] Channel mapping API
Date: Tue, 21 Aug 2012 15:12:36 +0100 [thread overview]
Message-ID: <20120821141236.GL7995@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <s5hwr0s1gnr.wl%tiwai@suse.de>
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On Tue, Aug 21, 2012 at 04:08:40PM +0200, Takashi Iwai wrote:
> Mark Brown wrote:
> > Currently only named channel maps are supported. It'd be nice to also
> > support just plain numbered channels, or at least provide a way to say
> > to userspace that it needs to do something like chase through a routing
> > map to figure out where each channel goes (as opposed to assuming that
> > the driver doesn't know what to report).
> The channel map value are basically arbitrary 32bit integer, so we can
> define something like:
> #define SND_CHMAP_NUMBERED 0x10000
> and pass the channel number with this bit flag.
> Then it becomes a matter of definition of chmap values.
Yes, I think something like this where we've got the map values split
into a type and a value would address things simply.
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next prev parent reply other threads:[~2012-08-21 14:12 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-21 10:31 [RFC] Channel mapping API Takashi Iwai
2012-08-21 11:24 ` David Henningsson
2012-08-21 11:44 ` Clemens Ladisch
2012-08-21 12:06 ` Takashi Iwai
2012-08-21 13:13 ` Takashi Iwai
2012-08-21 11:37 ` Clemens Ladisch
2012-08-21 12:15 ` Takashi Iwai
2012-08-21 12:31 ` Jaroslav Kysela
2012-08-21 12:35 ` Takashi Iwai
2012-08-21 13:14 ` Takashi Iwai
2012-08-21 14:00 ` David Henningsson
2012-08-21 14:06 ` Mark Brown
2012-08-21 14:13 ` David Henningsson
2012-08-21 14:18 ` Mark Brown
2012-08-21 14:49 ` Takashi Iwai
2012-08-21 15:38 ` Clemens Ladisch
2012-08-21 16:27 ` Mark Brown
2012-08-21 17:05 ` Takashi Iwai
2012-08-21 17:11 ` Mark Brown
2012-08-21 19:29 ` Takashi Iwai
2012-08-21 15:49 ` Mark Brown
2012-08-21 14:52 ` David Henningsson
2012-08-21 15:07 ` Mark Brown
2012-08-21 15:38 ` David Henningsson
2012-08-21 16:34 ` Mark Brown
2012-08-21 17:09 ` Takashi Iwai
2012-08-21 17:57 ` Mark Brown
2012-08-21 13:59 ` Mark Brown
2012-08-21 14:08 ` Takashi Iwai
2012-08-21 14:12 ` Mark Brown [this message]
2012-08-21 18:03 ` Pierre-Louis Bossart
2012-08-21 19:23 ` Takashi Iwai
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