Add DSU controller input and auxiliary/multi screen streaming support#19019
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danprice142 wants to merge 9 commits into
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Add DSU controller input and auxiliary/multi screen streaming support#19019danprice142 wants to merge 9 commits into
danprice142 wants to merge 9 commits into
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Cleanup and small feature: remove unused variables and dead switch blocks, fix a missing return, and fix a stop-recording quick menu entry.
Add support for auxiliary screen streaming in the UI and runtime: add sublabel strings for start/stop aux streaming, register sublabel macros and menu bindings, and update menu display logic to account for aux streaming/recording state. Adjust streaming action handlers to check recording/aux state and avoid conflicting starts (early-return to resume when appropriate). Also add DSU-side logging and a runloop message push when a controller is attached to provide user feedback.
Add HAVE_DSU defines to numerous platform Makefiles (ctr, griffin, libnx, vita, wii, wiiu and related config) and enable -DHAVE_DSU in build CFLAGS. Clean up minor whitespace/trailing-space issues in Makefiles. Refactor input code: split variable declarations and assignments in input/drivers/uwp_input.c and input/input_dsu.c for clarity and to avoid potential uninitialized-use warnings; restructure polling logic (braces, poll_count placement) and simplify/initialize temporaries. Fix runloop.c by declaring init_result before use and correct the active-screen iteration so screens are only counted/added when the active mask bit is set. These changes enable DSU across platforms and improve code clarity and correctness.
Include command.h for required declarations and change the address-family check to use the generic sa_family via a cast to struct sockaddr. This avoids directly accessing ss_family on the passed storage pointer and improves portability/safety when validating AF_INET addresses.
This was referenced May 25, 2026
danprice142
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These commits implements a extended DSU (Cemuhook) input for receiving controller/mouse/touch/keyboard/motion data over UDP as well as launching games and starting streams, adds libretro multi-screen API support for cores with multiple displays (e.g., Nintendo DS), and enable auxiliary screen streaming/recording. The changes include UI integration for aux streaming controls, DSU controller attachment notifications, video-only FFmpeg recording for aux streams, and configuration options for DSU & AUX Screen settings.
Example how cores can make use of the AUX screen stream feature
libretro/melonDS@master...danprice142:melonDS:master
Could close #3372 and could close #7109