[alsa-devel] HDMI Multichannel LPCM/RAW Support/Status

Dustin Kerstein dustobub at gmail.com
Wed Feb 27 03:11:17 CET 2008

I was just curious if there is any planned support for multichannel LPCM/Raw
audio for newer HDMI based chipsets. There are several matx boards with HDMI
1.1 and above compliance, which means they should be able to pass 8-channel
LPCM audio. Also, in HDMI 1.3 and above, Bit Stream passing is supported,
which actually should be easier, bandwidth wise, than LPCM. Multichannel PCM
(above 2 channels) was never an issue because SPDIF lacked the bandwidth.
After talking with some people in irc it seems as though the # of channels
setting in Alsa is only one bit. Thanks.


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