On Tue, Oct 14, 2014 at 11:56 AM, Pierre-Louis Bossart < pierre-louis.bossart@linux.intel.com> wrote:
On 10/11/14, 1:33 AM, Andrej Falout wrote:
Hello, <...snip...> 5. Note that as far as I know, no proprietary drivers on Windows (ATI/AMD, Nvidia, Intel) support this; It will be the first time a device that is not a SACD player outputs DSD over HDMI, on any OS. I am assuming that this has nothing to do with hardware limitations of the HDMI chips used for video outputs (I could not find any reference for such assumption in any HDMI chips I examined specs for). Therefore, I assume that implementing this has no hardware prerequisites.
HDMI controllers typically don't support DSD in the PC space. It'd be easier to convert to high-res PCM (HBR).
Hello Pierre-Louis,
Thank you for your comment.
What are you basing your assessment that "HDMI controllers typically don't support DSD in the PC space"? I looked, but could not find any evidence for this.
Certainly, DSD is not a part of HDMI hardware implementation (such as for example, CEC). From all info I have, DSD is simply multiplexed into HDMI data stream, just as DST-HD or AC3 is.
The goal here is to have a native DSD transport, so conversion to PCM is not an option.
Thanks, Andrej Falout