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vnc: Support for LED state extension

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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>
This commit is contained in:
Lei Li 2013-04-25 13:29:10 +08:00 committed by Anthony Liguori
parent 96f3d174bd
commit ab99e5c1d9
2 changed files with 48 additions and 0 deletions
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45
ui/vnc.c
View File

@ -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)

3
ui/vnc.h
View File

@ -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 */