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feat(neshub): per-window pause and resume of capture and encode

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MSG_WINDOW_PAUSE and MSG_WINDOW_RESUME on the control stream. The hub sends
them to the encoder of the window the client is shown; nescapture stops
capturing in the present hook while paused, and resume requests a keyframe.
This commit is contained in:
Wanjohi
2026-10-18 23:33:01 +03:00
parent c39e81b7db
commit 849eb70bb9
5 changed files with 134 additions and 3 deletions
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crates/nesprotocol/src/lib.rs
+12
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@@ -103,6 +103,15 @@ pub const MSG_IDR_REQUEST: u8 = 0x10; // request a keyframe (desktop → hub →
pub const MSG_ENCODE_SETTINGS: u8 = 0x12; // change encoder settings (desktop → hub → nescapture)
pub const MSG_CLIENT_CAPS: u8 = 0x15; // what the client can decode (desktop → hub → nescapture)
pub const MSG_SURFACE_COLOR: u8 = 0x16; // what the compositor was told a surface is (nescope → nescapture)
/// Stop capturing and encoding the window this client is shown (desktop → hub
/// → that window's nescapture), ref(d-0087). The game keeps running; nothing is
/// sent for the window until [`MSG_WINDOW_RESUME`]. No payload: the hub already
/// knows which window the client is subscribed to, as it does for
/// [`MSG_IDR_REQUEST`]. An old hub logs it as an unknown control message.
pub const MSG_WINDOW_PAUSE: u8 = 0x18;
/// Start again, with a keyframe within a second (desktop → hub → nescapture).
/// Resume is also what forces the keyframe, so the client need not ask for one.
pub const MSG_WINDOW_RESUME: u8 = 0x19;
/// What the receiver actually got, once a second (desktop → hub).
///
/// The hub cannot see this. Its own view of the path -- RTT, congestion window,
@@ -1009,6 +1018,9 @@ mod media_control_tests {
("MSG_ENCODE_SETTINGS", MSG_ENCODE_SETTINGS),
("MSG_CLIENT_CAPS", MSG_CLIENT_CAPS),
("MSG_SURFACE_COLOR", MSG_SURFACE_COLOR),
("MSG_WINDOW_PAUSE", MSG_WINDOW_PAUSE),
("MSG_WINDOW_RESUME", MSG_WINDOW_RESUME),
("MSG_WINDOW_SUBSCRIBE", window::MSG_WINDOW_SUBSCRIBE),
("MSG_RECEIVER_REPORT", MSG_RECEIVER_REPORT),
("MSG_CONTROL_MODE", MSG_CONTROL_MODE),
("MSG_INPUT_BATCH", MSG_INPUT_BATCH),