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authorLei Li <lilei@linux.vnet.ibm.com>2013-04-25 13:29:10 +0800
committerAnthony Liguori <aliguori@us.ibm.com>2013-04-29 08:28:51 -0500
commitab99e5c1d9f6a3f6fc2ce3b77b712221c647c7a5 (patch)
tree85cf7d6e400240cc0a680aca2610d1bdbff80d42
parent96f3d174bdfcc7d6205fa223ddc2cb01186dcd8f (diff)
vnc: Support for LED state extension
Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Message-id: 1366867752-11578-3-git-send-email-lilei@linux.vnet.ibm.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
-rw-r--r--ui/vnc.c45
-rw-r--r--ui/vnc.h3
2 files changed, 48 insertions, 0 deletions
diff --git a/ui/vnc.c b/ui/vnc.c
index 56fd805717..899833ae6a 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -1522,6 +1522,42 @@ static void press_key(VncState *vs, int keysym)
kbd_put_keycode(keycode | SCANCODE_UP);
}
+static int current_led_state(VncState *vs)
+{
+ int ledstate = 0;
+
+ if (vs->modifiers_state[0x46]) {
+ ledstate |= QEMU_SCROLL_LOCK_LED;
+ }
+ if (vs->modifiers_state[0x45]) {
+ ledstate |= QEMU_NUM_LOCK_LED;
+ }
+ if (vs->modifiers_state[0x3a]) {
+ ledstate |= QEMU_CAPS_LOCK_LED;
+ }
+
+ return ledstate;
+}
+
+static void vnc_led_state_change(VncState *vs)
+{
+ int ledstate = 0;
+
+ if (!vnc_has_feature(vs, VNC_FEATURE_LED_STATE)) {
+ return;
+ }
+
+ ledstate = current_led_state(vs);
+ vnc_lock_output(vs);
+ vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
+ vnc_write_u8(vs, 0);
+ vnc_write_u16(vs, 1);
+ vnc_framebuffer_update(vs, 0, 0, 1, 1, VNC_ENCODING_LED_STATE);
+ vnc_write_u8(vs, ledstate);
+ vnc_unlock_output(vs);
+ vnc_flush(vs);
+}
+
static void kbd_leds(void *opaque, int ledstate)
{
VncState *vs = opaque;
@@ -1540,6 +1576,11 @@ static void kbd_leds(void *opaque, int ledstate)
if (vs->modifiers_state[0x46] != scr) {
vs->modifiers_state[0x46] = scr;
}
+
+ /* Sending the current led state message to the client */
+ if (ledstate != current_led_state(vs)) {
+ vnc_led_state_change(vs);
+ }
}
static void do_key_event(VncState *vs, int down, int keycode, int sym)
@@ -1893,6 +1934,9 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
case VNC_ENCODING_WMVi:
vs->features |= VNC_FEATURE_WMVI_MASK;
break;
+ case VNC_ENCODING_LED_STATE:
+ vs->features |= VNC_FEATURE_LED_STATE_MASK;
+ break;
case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9:
vs->tight.compression = (enc & 0x0F);
break;
@@ -1908,6 +1952,7 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
}
vnc_desktop_resize(vs);
check_pointer_type_change(&vs->mouse_mode_notifier, NULL);
+ vnc_led_state_change(vs);
}
static void set_pixel_conversion(VncState *vs)
diff --git a/ui/vnc.h b/ui/vnc.h
index ad1dec2894..fea39adcc7 100644
--- a/ui/vnc.h
+++ b/ui/vnc.h
@@ -384,6 +384,7 @@ enum {
#define VNC_ENCODING_EXT_KEY_EVENT 0XFFFFFEFE /* -258 */
#define VNC_ENCODING_AUDIO 0XFFFFFEFD /* -259 */
#define VNC_ENCODING_TIGHT_PNG 0xFFFFFEFC /* -260 */
+#define VNC_ENCODING_LED_STATE 0XFFFFFEFB /* -261 */
#define VNC_ENCODING_WMVi 0x574D5669
/*****************************************************************************
@@ -422,6 +423,7 @@ enum {
#define VNC_FEATURE_TIGHT_PNG 8
#define VNC_FEATURE_ZRLE 9
#define VNC_FEATURE_ZYWRLE 10
+#define VNC_FEATURE_LED_STATE 11
#define VNC_FEATURE_RESIZE_MASK (1 << VNC_FEATURE_RESIZE)
#define VNC_FEATURE_HEXTILE_MASK (1 << VNC_FEATURE_HEXTILE)
@@ -434,6 +436,7 @@ enum {
#define VNC_FEATURE_TIGHT_PNG_MASK (1 << VNC_FEATURE_TIGHT_PNG)
#define VNC_FEATURE_ZRLE_MASK (1 << VNC_FEATURE_ZRLE)
#define VNC_FEATURE_ZYWRLE_MASK (1 << VNC_FEATURE_ZYWRLE)
+#define VNC_FEATURE_LED_STATE_MASK (1 << VNC_FEATURE_LED_STATE)
/* Client -> Server message IDs */