diff options
| -rw-r--r-- | qemu-options.hx | 8 | ||||
| -rw-r--r-- | ui/vnc.c | 13 | ||||
| -rw-r--r-- | ui/vnc.h | 1 |
3 files changed, 20 insertions, 2 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index 6106520c56..9f33361876 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -1410,6 +1410,14 @@ everybody else. 'ignore' completely ignores the shared flag and allows everybody connect unconditionally. Doesn't conform to the rfb spec but is traditional QEMU behavior. +@item key-delay-ms + +Set keyboard delay, for key down and key up events, in milliseconds. +Default is 1. Keyboards are low-bandwidth devices, so this slowdown +can help the device and guest to keep up and not lose events in case +events are arriving in bulk. Possible causes for the latter are flaky +network connections, or scripts for automated testing. + @end table ETEXI diff --git a/ui/vnc.c b/ui/vnc.c index ddd01fdce6..c862fdcc9d 100644 --- a/ui/vnc.c +++ b/ui/vnc.c @@ -1629,6 +1629,7 @@ static void reset_keys(VncState *vs) for(i = 0; i < 256; i++) { if (vs->modifiers_state[i]) { qemu_input_event_send_key_number(vs->vd->dcl.con, i, false); + qemu_input_event_send_key_delay(vs->vd->key_delay_ms); vs->modifiers_state[i] = 0; } } @@ -1638,9 +1639,9 @@ static void press_key(VncState *vs, int keysym) { int keycode = keysym2scancode(vs->vd->kbd_layout, keysym) & SCANCODE_KEYMASK; qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, true); - qemu_input_event_send_key_delay(0); + qemu_input_event_send_key_delay(vs->vd->key_delay_ms); qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, false); - qemu_input_event_send_key_delay(0); + qemu_input_event_send_key_delay(vs->vd->key_delay_ms); } static int current_led_state(VncState *vs) @@ -1792,6 +1793,7 @@ static void do_key_event(VncState *vs, int down, int keycode, int sym) if (qemu_console_is_graphic(NULL)) { qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, down); + qemu_input_event_send_key_delay(vs->vd->key_delay_ms); } else { bool numlock = vs->modifiers_state[0x45]; bool control = (vs->modifiers_state[0x1d] || @@ -1913,6 +1915,7 @@ static void vnc_release_modifiers(VncState *vs) continue; } qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, false); + qemu_input_event_send_key_delay(vs->vd->key_delay_ms); } } @@ -3278,6 +3281,9 @@ static QemuOptsList qemu_vnc_opts = { .name = "lock-key-sync", .type = QEMU_OPT_BOOL, },{ + .name = "key-delay-ms", + .type = QEMU_OPT_NUMBER, + },{ .name = "sasl", .type = QEMU_OPT_BOOL, },{ @@ -3515,6 +3521,7 @@ void vnc_display_open(const char *id, Error **errp) #endif int acl = 0; int lock_key_sync = 1; + int key_delay_ms; if (!vs) { error_setg(errp, "VNC display not active"); @@ -3633,6 +3640,7 @@ void vnc_display_open(const char *id, Error **errp) reverse = qemu_opt_get_bool(opts, "reverse", false); lock_key_sync = qemu_opt_get_bool(opts, "lock-key-sync", true); + key_delay_ms = qemu_opt_get_number(opts, "key-delay-ms", 1); sasl = qemu_opt_get_bool(opts, "sasl", false); #ifndef CONFIG_VNC_SASL if (sasl) { @@ -3764,6 +3772,7 @@ void vnc_display_open(const char *id, Error **errp) } #endif vs->lock_key_sync = lock_key_sync; + vs->key_delay_ms = key_delay_ms; device_id = qemu_opt_get(opts, "display"); if (device_id) { diff --git a/ui/vnc.h b/ui/vnc.h index 81a326116b..6568bca520 100644 --- a/ui/vnc.h +++ b/ui/vnc.h @@ -155,6 +155,7 @@ struct VncDisplay DisplayChangeListener dcl; kbd_layout_t *kbd_layout; int lock_key_sync; + int key_delay_ms; QemuMutex mutex; QEMUCursor *cursor; |