[alsa-devel] ASOC PCM formats
clemens at ladisch.de
Mon Jun 9 09:20:25 CEST 2008
Jon Smirl wrote:
> Why is the AC97 format set to S16 in all of the drivers? The link is
> 20b and my codec takes 20b, how do I get 20b data to the device?
You can only use sample formats that are supported by the AC97
> I tried using SNDRV_PCM_FORMAT_S20_3BE but all I get is static.
S20_3LE could in theory be used by USB devices. There is no hardware
that supports S20_3BE.
How did you use this format? Which driver is this?
> If I use S24 for the format it works but volume is divided by 16.
S24 means that the 24 sample bits are in the least significant bits of
a 32-bit memory word. 24 sample bits in the most significant bits of
a 32-bit memory word would be S32. (It might be possible that your
driver gets this wrong.)
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