AMF + NVENC control and support

Overlord-Client/cmd/agent/privacy/privacy.go

@@ -5,7 +5,10 @@ import (
 	"sync/atomic"
 )
 
-const inputMarker uintptr = 0x00D5E7B00B5
+// Keep the full marker on 64-bit builds and let the runtime conversion retain
+// its low 32 bits on 32-bit builds. dwExtraInfo is pointer-sized, so the sender
+// and the low-level hooks observe the same value on either architecture.
+var inputMarkerValue uint64 = 0x00D5E7B00B5
 
 type Manager struct {
 	mu      sync.Mutex
@@ -51,4 +54,4 @@ func (m *Manager) Disable() {
 func Start() error         { return Get().Enable() }
 func Stop()                { Get().Disable() }
 func IsEnabled() bool      { return Get().IsEnabled() }
-func InputMarker() uintptr { return inputMarker }
+func InputMarker() uintptr { return uintptr(inputMarkerValue) }

Overlord-Client/cmd/agent/privacy/privacy_test.go

@@ -0,0 +1,19 @@
+package privacy
+
+import (
+	"strconv"
+	"testing"
+)
+
+func TestInputMarkerFitsPointerWidth(t *testing.T) {
+	marker := InputMarker()
+	if marker == 0 {
+		t.Fatal("input marker must not be zero")
+	}
+	if strconv.IntSize == 32 && uint64(marker) != inputMarkerValue&0xffffffff {
+		t.Fatalf("32-bit marker = %#x, want low bits %#x", marker, inputMarkerValue&0xffffffff)
+	}
+	if strconv.IntSize == 64 && uint64(marker) != inputMarkerValue {
+		t.Fatalf("64-bit marker = %#x, want %#x", marker, inputMarkerValue)
+	}
+}