[Qemu-devel] [PATCH 3/3] ui/vnc: disable adaptive update calculations if not needed

[Peter Lieven <pl@kamp.de>]

Signed-off-by: Peter Lieven <pl@kamp.de>
---
 ui/vnc.c |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/ui/vnc.c b/ui/vnc.c
index edf33be..6683ae9 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -3194,7 +3194,9 @@ void vnc_display_open(DisplayState *ds, const char *display, Error **errp)
             acl = 1;
 #endif
         } else if (strncmp(options, "lossy", 5) == 0) {
+#ifdef CONFIG_VNC_JPEG
             vs->lossy = true;
+#endif
         } else if (strncmp(options, "non-adaptive", 12) == 0) {
             vs->non_adaptive = true;
         } else if (strncmp(options, "share=", 6) == 0) {
@@ -3211,6 +3213,13 @@ void vnc_display_open(DisplayState *ds, const char *display, Error **errp)
         }
     }
 
+    /* adaptive updates are only used with tight encoding and
+     * if lossy updates are enabled so we can disable all the
+     * calculations otherwise */
+    if (!vs->lossy) {
+        vs->non_adaptive = true;
+    }
+
 #ifdef CONFIG_VNC_TLS
     if (acl && x509 && vs->tls.x509verify) {
         if (!(vs->tls.acl = qemu_acl_init("vnc.x509dname"))) {
-- 
1.7.9.5