fix non-windows

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

@@ -111,7 +111,7 @@ func CaptureAndSend(ctx context.Context, env *rt.Env) error {
 	codec := desktopCodec()
 	directCanvasVideo := (codec == "h264" || codec == "hevc") &&
 		(codec != "h264" || !useDesktopSoftwareH264()) &&
-		useDesktopDuplication() &&
+		directDesktopVideoEnabled() &&
 		!(codec == "h264" && webrtcpub.IsActive(webrtcpub.KindDesktop))
 	directSlotAcquired := false
 	if directCanvasVideo {

Overlord-Client/cmd/agent/capture/h264_direct_default.go

@@ -8,6 +8,10 @@ import (
 	"overlord-client/cmd/agent/wire"
 )
 
+func directDesktopVideoEnabled() bool {
+	return false
+}
+
 func tryBuildDirectH264Frame(_ int) (wire.Frame, time.Duration, time.Duration, bool, error) {
 	return wire.Frame{}, 0, 0, false, nil
 }

Overlord-Client/cmd/agent/capture/h264_direct_windows.go

@@ -16,6 +16,10 @@ func directVideoKeyframeDue(requested bool, nowNs, lastKeyframeNs int64) bool {
 	return videoKeyframeEvery > 0 && time.Duration(nowNs-lastKeyframeNs) >= videoKeyframeEvery
 }
 
+func directDesktopVideoEnabled() bool {
+	return useDesktopDuplication()
+}
+
 func tryBuildDirectH264Frame(display int) (wire.Frame, time.Duration, time.Duration, bool, error) {
 	codec := desktopCodec()
 	if (codec != "h264" && codec != "hevc") || (codec == "h264" && useDesktopSoftwareH264()) || !useDesktopDuplication() {