[alsa-devel] dma buffer format

Takashi Iwai tiwai at suse.de
Mon Feb 16 23:26:13 CET 2009

At Mon, 16 Feb 2009 16:21:59 -0600,
York Sun wrote:
> Takashi,
> I am now working on a surround sound driver for the first time. I am
> confused by the packed format of dma buffer. If the channel number is 6,
> is the buffer filled with data as
> front left, front right, rear left, rear right, center, LFE
> or
> front left, rear left, center, front right, rear left, LFE?

It's supposed to be FL/FR/RL/RR/C/LFE.
That's so to be consitent with 4 channels (just cut the last two


More information about the Alsa-devel mailing list