AC3 or DTS via Scream?

[taravasya]

Hello! This crazy think can be real in this world? I want to cast my AC3 or DTS sound while i whatch cinema, and receive this cast on Raspberry Pi with hat which i2s to optical SPDIF converter.

I understand what problems can be at hat side, but i first want to understand if it possible to cast AC3 and DTS sound like virtual passthrough device?

Thanks.

[duncanthrax]

Transferring multichannel sound is possible, but only raw, not encoded as AC3 or DTS. Why do you want to decode on the Raspi?

[taravasya]

Thanks for the answer. Sorry, I think I described the situation a little incorrectly. I do not want to decode in the Raspberry pi. I want, through the optical output of the hat, to send a signal to the optical input of my receiver, so that in the end the receiver will decode it.

[duncanthrax]

Nope sorry, that does not work. The AC3/DTS signal isn't available in the kernel where the driver sits. The driver only sees the decoded PCM streams (which are normally pasted onto the hardware).