[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Re: [libvirt] problem of escaped scancodes



On Tue, 23 Aug 2011 14:54:11 +0100
"Daniel P. Berrange" <berrange redhat com> wrote:
 
> No, we just need to switch to use the correct scancode set.
> 
> The original keymap-gen.pl script in GTK-VNC has code for auto-generating
> the RFB scancode set, from the data for the XT KBD scancode set. It is a
> straighforward re-encoding for the extended keys:
> 
>     # RFB keycodes are XT kbd keycodes with a slightly
>     # different encoding of 0xe0 scan codes. RFB uses
>     # the high bit of the first byte, instead of the low
>     # bit of the second byte.
>     rfbkey = (xtkbdkey & 0x100) >> 1 | (ktkbdkey & 0x7f)
> 
like this ?

==
>From 7ea5214b7832acbb7bae81d7d8ceeaa19890e32b Mon Sep 17 00:00:00 2001
From: KAMEZAWA Hiroyuki <kamezawa hiroyu jp fujitsu com>
Date: Thu, 25 Aug 2011 10:29:57 +0900
Subject: [PATCH] fix to adjust xt_kbd scancode

The keycode in http://git.gnome.org/browse/gtk-vnc/plain/src/keymaps.csv
handles escaped scancode in different way from qemu's one.

all escaped scancode "e0 ??" are encoded as "0x100 | ??" in this csv.
But qemu handles escaped scancode as "0x80 | ??" and this scancode
is more common.
---
 src/util/virkeycode-mapgen.py |   14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)

diff --git a/src/util/virkeycode-mapgen.py b/src/util/virkeycode-mapgen.py
index acf7364..5d83a39 100755
--- a/src/util/virkeycode-mapgen.py
+++ b/src/util/virkeycode-mapgen.py
@@ -14,6 +14,7 @@ import sys
 import re
 
 namecolums = (0,2,10)
+xtkbdkey_index = 8
 
 def quotestring(str):
     if str[0] != '"':
@@ -38,7 +39,18 @@ for line in sys.stdin.xreadlines():
     for i in namecolums:
         b = b + (a[i] and quotestring(a[i]) or 'NULL') + ','
     for i in [ x for x in range(12) if not x in namecolums ]:
-        b = b + (a[i] or '0') + ','
+        if i != xtkbdkey_index :
+            b = b + (a[i] or '0') + ','
+        elif a[i] == '' :
+            b = b + '0' + ','
+        else :
+            # RFB keycodes are XT kbd keycodes with a slightly
+            # different encoding of 0xe0 scan codes. RFB uses
+            # the high bit of the first byte, instead of the low
+            # bit of the second byte.
+            code = int(a[i])
+            code = (code & 0x100) >> 1 | (code & 0x7f)
+            b = b + str(code) + ','
     print "    { " + b + "},"
 
 print '};'
-- 
1.7.4.1



[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]