[alsa-devel] [RFC] Channel mapping API (take 2)

David Henningsson david.henningsson at canonical.com
Wed Sep 5 10:32:24 CEST 2012

On 09/04/2012 05:47 PM, Takashi Iwai wrote:
>    The phase inverted channel has this bit:
>    #define SNDRV_CHMAP_PHASE_INVERSE	(0x01 << 16)

Hmm. On second thought, as mics are plugged in and unplugged during 
recording, the channel map will change. (E g, changing a digital mic 
with phase inverse, to a stereo line in)

Will we also need a notify callback in alsa-lib to know changes in the 
channel map?

David Henningsson, Canonical Ltd.

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