[alsa-devel] Compressed audio support over HDMI

[Pierre-Louis Bossart]

On 11/4/14, 3:40 PM, D K wrote:
> Hi,
>     I recently came across the compressed audio framework used with ALSA-SOC.
> Can the framework be used to send compressed audio to HDMI driver?.Like
> using tinycompress from usespace .
> thanks,

HDMI already supports IEC modes when you can send AC3, DTS, etc payloads 
without decoding. All you need to do is packetize the data in userspace 
and send the result over the HDMI PCM device (and set some control bits 
to help the receiver lock faster).