add most common hardware encoders:

- nvh264enc: for NVidia hardware
- vaapih264enc: for common AMD and Intel cards

Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
---
 ui/vnc-enc-h264.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/ui/vnc-enc-h264.c b/ui/vnc-enc-h264.c
index 09b974a787..98055c095f 100644
--- a/ui/vnc-enc-h264.c
+++ b/ui/vnc-enc-h264.c
@@ -20,7 +20,7 @@ static char *get_available_encoder(const char *encoder_list)
 
     if (!strcmp(encoder_list, "")) {
         /* use default list */
-        encoder_list = "x264enc:openh264enc";
+        encoder_list = "nvh264enc:vaapih264enc:x264enc:openh264enc";
     }
 
     encoder_array = g_strsplit(encoder_list, ":", -1);
@@ -50,7 +50,19 @@ static GstElement *create_encoder(const char *encoder_name)
         return NULL;
     }
 
-    if (!strcmp(encoder_name, "x264enc")) {
+    if (!strcmp(encoder_name, "nvh264enc")) {
+        g_object_set(
+            encoder,
+            "preset", 8,         /* p1 - fastest */
+            "multi-pass", 1,     /* multipass disabled */
+            "tune", 2,           /* low latency */
+            "zerolatency", true, /* low latency */
+            /* avoid access unit delimiters (Nal Unit Type 9) - not required */
+            "aud", false,
+            NULL);
+    } else if (!strcmp(encoder_name, "vaapih264enc")) {
+        g_object_set(encoder, "tune", 1, NULL); /* high compression */
+    } else if (!strcmp(encoder_name, "x264enc")) {
         g_object_set(
             encoder,
             "tune", 4, /* zerolatency */
-- 
2.39.5