The trick to play videos smoothly across two displays is to decode them into a DRM framebuffer and the playing that single FB into cropped planes on each display. That way everything should be zero copy and as fast as possible. My software can do this. I’m not sure there’s any other that does that?
Would the same be possible within wayland? Or does that necessarily compose into its own buffer and spreads that across displays? In that case, placing a single playback window across displays would involve an extra copy.
I’ve also played around with HDR support, but currently doesn’t have the necessary test equipment to check how that all works out. But support providing required DRM metadata together with support for 10bit HEVC decoding exists.
Would the same be possible within wayland? Or does that necessarily compose into its own buffer and spreads that across displays? In that case, placing a single playback window across displays would involve an extra copy.
I’ve also played around with HDR support, but currently doesn’t have the necessary test equipment to check how that all works out. But support providing required DRM metadata together with support for 10bit HEVC decoding exists.
Statistics: Posted by dividuum — Thu May 09, 2024 5:44 am