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Per-subsystem hook control: install/remove input, focus, audio at runtime

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Add a host->hook control channel (protocol v5 -> v6: HookControl in SharedBlock,
per-subsystem "disabled" flags, 0 = install so the zero-filled default is
unchanged). The worker now reconciles each subsystem every tick: install what's
requested-and-missing, remove what's no longer wanted -- so the audio hooks
re-attach the ring and republish format on a reinstall, and XInput/focus clear
their stale status flags on removal.

Injection panel: a checkbox per subsystem (input forwarding / focus spoof /
audio render-hook) toggles it at runtime, showing the requested vs actual
installed state from the registry, plus DLL heartbeat liveness. The hook-status
section now keys off whether a DLL was injected (host-side) rather than the
input-hook "attached" flag, so it stays visible with input unhooked.

Guards for dependent features: the synthetic-input control is disabled when
input forwarding is off, and the Audio panel explains that mirroring uses
loopback (echo) when the render-hook is off.

Verified against Phantom Brave via coop_audio_probe: starting with audio
requested off installs only input+focus (8 hooks, no capture); re-enabling at
runtime installs the audio hooks (13) and capture starts immediately. All four
tests pass.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
BlackMark
2026-06-19 20:17:48 +02:00
parent 1f905940ef
commit 0935dccfc4
12 changed files with 246 additions and 19 deletions
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21
hook/src/ipc_client.hpp
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@@ -44,6 +44,17 @@ public:
return block_ != nullptr;
}
// Host-requested install state for a subsystem (default = install, since the
// mapping is zero-filled and 0 means "disabled flag clear" = install).
[[nodiscard]] bool subsystem_install_requested(std::uint32_t subsystem) const
{
if (block_ == nullptr || subsystem >= HookSubsys_Count)
{
return true;
}
return block_->control.subsystem_disabled[subsystem].load(std::memory_order_acquire) == 0;
}
// Copies a torn-free snapshot of all slots. Returns false only if the host
// was mid-write for the whole spin window (caller should reuse its cache).
bool snapshot(CoopPadState (&out)[kMaxPads], std::uint32_t& count) const
@@ -91,6 +102,16 @@ public:
}
}
// XInput hooks were removed (host unhooked input): clear the attached flag so
// the Controllers panel stops showing stale poll rates.
void mark_detached()
{
if (block_ != nullptr)
{
block_->status.attached = 0;
}
}
void mark_focus_spoof(bool active, std::uint64_t game_hwnd)
{
if (block_ != nullptr)