Fix SDL on evdev hosts (Anthony Liguori)

This patch corrects SDL support on X11 hosts using evdev.  It's losely based
on the previous patch by Dustin Kirkland and the evdev support code in gtk-vnc
written by Daniel Berrange.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6678 c046a42c-6fe2-441c-8c8c-71466251a162

5 files changed, 183 insertions, 26 deletions

diff --git a/configure b/configure
index 62925d8..faacb8d 100755
--- a/configure
+++ b/configure
@@ -187,6 +187,7 @@ kerneldir=""
 aix="no"
 blobs="yes"
 fdt="yes"
+sdl_x11="no"
 
 # OS specific
 if check_define __linux__ ; then
@@ -805,6 +806,21 @@ else
     fi
 fi # -z $sdl
 
+if test "$sdl" = "yes" ; then
+cat > $TMPC <<EOF
+#include <SDL.h>
+#if defined(SDL_VIDEO_DRIVER_X11)
+#include <X11/XKBlib.h>
+#else
+#error No x11 support
+#endif
+int main(void) { return 0; }
+EOF
+    if $cc $ARCH_CFLAGS -o $TMPE ${OS_CFLAGS} `$sdl_config --cflags 2> /dev/null` $TMPC `$sdl_config --libs 2> /dev/null` > /dev/null 2>&1 ; then
+	sdl_x11="yes"
+    fi
+fi
+
 ##########################################
 # VNC TLS detection
 if test "$vnc_tls" = "yes" ; then
@@ -1393,6 +1409,8 @@ if test "$sdl1" = "yes" ; then
   echo "CONFIG_SDL=yes" >> $config_mak
   if test "$target_softmmu" = "no" -o "$static" = "yes"; then
     echo "SDL_LIBS=$sdl_static_libs" >> $config_mak
+  elif test "$sdl_x11" = "yes" ; then
+    echo "SDL_LIBS=`$sdl_config --libs` -lX11" >> $config_mak
   else
     echo "SDL_LIBS=`$sdl_config --libs`" >> $config_mak
   fi
diff --git a/console.h b/console.h
index 4a2f06f..8f438e9 100644
--- a/console.h
+++ b/console.h
@@ -292,9 +292,6 @@ void do_info_vnc(void);
 /* curses.c */
 void curses_display_init(DisplayState *ds, int full_screen);
 
-/* x_keymap.c */
-extern uint8_t _translate_keycode(const int key);
-
 /* FIXME: term_printf et al should probably go elsewhere so everything
    does not need to include console.h  */
 /* monitor.c */
diff --git a/sdl.c b/sdl.c
index 266fbcc..c685b81 100644
--- a/sdl.c
+++ b/sdl.c
@@ -24,8 +24,10 @@
 #include "qemu-common.h"
 #include "console.h"
 #include "sysemu.h"
+#include "x_keymap.h"
 
 #include <SDL.h>
+#include <SDL/SDL_syswm.h>
 
 #ifndef _WIN32
 #include <signal.h>
@@ -136,9 +138,54 @@ static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 
 #else
 
+#if defined(SDL_VIDEO_DRIVER_X11)
+#include <X11/XKBlib.h>
+
+static int check_for_evdev(void)
+{
+    SDL_SysWMinfo info;
+    XkbDescPtr desc;
+    int has_evdev = 0;
+    const char *keycodes;
+
+    SDL_VERSION(&info.version);
+    if (!SDL_GetWMInfo(&info))
+        return 0;
+
+    desc = XkbGetKeyboard(info.info.x11.display,
+                          XkbGBN_AllComponentsMask,
+                          XkbUseCoreKbd);
+    if (desc == NULL || desc->names == NULL)
+        return 0;
+
+    keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
+    if (keycodes == NULL)
+        fprintf(stderr, "could not lookup keycode name\n");
+    else if (strstart(keycodes, "evdev_", NULL))
+        has_evdev = 1;
+    else if (!strstart(keycodes, "xfree86_", NULL))
+        fprintf(stderr,
+                "unknown keycodes `%s', please report to qemu-devel@nongnu.org\n",
+                keycodes);
+
+    XkbFreeClientMap(desc, XkbGBN_AllComponentsMask, True);
+
+    return has_evdev;
+}
+#else
+static int check_for_evdev(void)
+{
+	return 0;
+}
+#endif
+
 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 {
     int keycode;
+    static int has_evdev = -1;
+
+    if (has_evdev == -1)
+        has_evdev = check_for_evdev();
 
     keycode = ev->keysym.scancode;
 
@@ -146,9 +193,16 @@ static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
         keycode = 0;
     } else if (keycode < 97) {
         keycode -= 8; /* just an offset */
-    } else if (keycode < 212) {
+    } else if (keycode < 158) {
         /* use conversion table */
-        keycode = _translate_keycode(keycode - 97);
+        if (has_evdev)
+            keycode = translate_evdev_keycode(keycode - 97);
+        else
+            keycode = translate_xfree86_keycode(keycode - 97);
+    } else if (keycode == 208) { /* Hiragana_Katakana */
+        keycode = 0x70;
+    } else if (keycode == 211) { /* backslash */
+        keycode = 0x73;
     } else {
         keycode = 0;
     }
diff --git a/x_keymap.c b/x_keymap.c
index f000475..b9b0944 100644
--- a/x_keymap.c
+++ b/x_keymap.c
@@ -22,7 +22,7 @@
  * THE SOFTWARE.
  */
 #include "qemu-common.h"
-#include "console.h"
+#include "x_keymap.h"
 
 static const uint8_t x_keycode_to_pc_keycode[115] = {
    0xc7,      /*  97  Home   */
@@ -86,27 +86,83 @@ static const uint8_t x_keycode_to_pc_keycode[115] = {
    0x51,         /* 155 KP_PgDn */
    0x52,         /* 156 KP_Ins */
    0x53,         /* 157 KP_Del */
-   0x0,         /* 158 */
-   0x0,         /* 159 */
-   0x0,         /* 160 */
-   0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,         /* 170 */
-   0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,         /* 180 */
-   0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,         /* 190 */
-   0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,         /* 200 */
-   0x0,         /* 201 */
-   0x0,         /* 202 */
-   0x0,         /* 203 */
-   0x0,         /* 204 */
-   0x0,         /* 205 */
-   0x0,         /* 206 */
-   0x0,         /* 207 */
-   0x70,         /* 208 Hiragana_Katakana */
-   0x0,         /* 209 */
-   0x0,         /* 210 */
-   0x73,         /* 211 backslash */
 };
 
-uint8_t _translate_keycode(const int key)
+/* This table is generated based off the xfree86 -> scancode mapping above
+ * and the keycode mappings in /usr/share/X11/xkb/keycodes/evdev
+ * and  /usr/share/X11/xkb/keycodes/xfree86
+ */
+
+static const uint8_t evdev_keycode_to_pc_keycode[61] = {
+    0,         /*  97 EVDEV - RO   ("Internet" Keyboards) */
+    0,         /*  98 EVDEV - KATA (Katakana) */
+    0,         /*  99 EVDEV - HIRA (Hiragana) */
+    0x79,      /* 100 EVDEV - HENK (Henkan) */
+    0x70,      /* 101 EVDEV - HKTG (Hiragana/Katakana toggle) */
+    0x7b,      /* 102 EVDEV - MUHE (Muhenkan) */
+    0,         /* 103 EVDEV - JPCM (KPJPComma) */
+    0x9c,      /* 104 KPEN */
+    0x9d,      /* 105 RCTL */
+    0xb5,      /* 106 KPDV */
+    0xb7,      /* 107 PRSC */
+    0xb8,      /* 108 RALT */
+    0,         /* 109 EVDEV - LNFD ("Internet" Keyboards) */
+    0xc7,      /* 110 HOME */
+    0xc8,      /* 111 UP */
+    0xc9,      /* 112 PGUP */
+    0xcb,      /* 113 LEFT */
+    0xcd,      /* 114 RGHT */
+    0xcf,      /* 115 END */
+    0xd0,      /* 116 DOWN */
+    0xd1,      /* 117 PGDN */
+    0xd2,      /* 118 INS */
+    0xd3,      /* 119 DELE */
+    0,         /* 120 EVDEV - I120 ("Internet" Keyboards) */
+    0,         /* 121 EVDEV - MUTE */
+    0,         /* 122 EVDEV - VOL- */
+    0,         /* 123 EVDEV - VOL+ */
+    0,         /* 124 EVDEV - POWR */
+    0,         /* 125 EVDEV - KPEQ */
+    0,         /* 126 EVDEV - I126 ("Internet" Keyboards) */
+    0,         /* 127 EVDEV - PAUS */
+    0,         /* 128 EVDEV - ???? */
+    0,         /* 129 EVDEV - I129 ("Internet" Keyboards) */
+    0xf1,      /* 130 EVDEV - HNGL (Korean Hangul Latin toggle) */
+    0xf2,      /* 131 EVDEV - HJCV (Korean Hangul Hanja toggle) */
+    0x7d,      /* 132 AE13 (Yen)*/
+    0xdb,      /* 133 EVDEV - LWIN */
+    0xdc,      /* 134 EVDEV - RWIN */
+    0xdd,      /* 135 EVDEV - MENU */
+    0,         /* 136 EVDEV - STOP */
+    0,         /* 137 EVDEV - AGAI */
+    0,         /* 138 EVDEV - PROP */
+    0,         /* 139 EVDEV - UNDO */
+    0,         /* 140 EVDEV - FRNT */
+    0,         /* 141 EVDEV - COPY */
+    0,         /* 142 EVDEV - OPEN */
+    0,         /* 143 EVDEV - PAST */
+    0,         /* 144 EVDEV - FIND */
+    0,         /* 145 EVDEV - CUT  */
+    0,         /* 146 EVDEV - HELP */
+    0,         /* 147 EVDEV - I147 */
+    0,         /* 148 EVDEV - I148 */
+    0,         /* 149 EVDEV - I149 */
+    0,         /* 150 EVDEV - I150 */
+    0,         /* 151 EVDEV - I151 */
+    0,         /* 152 EVDEV - I152 */
+    0,         /* 153 EVDEV - I153 */
+    0,         /* 154 EVDEV - I154 */
+    0,         /* 155 EVDEV - I156 */
+    0,         /* 156 EVDEV - I157 */
+    0,         /* 157 EVDEV - I158 */
+};
+
+uint8_t translate_xfree86_keycode(const int key)
+{
+    return x_keycode_to_pc_keycode[key];
+}
+
+uint8_t translate_evdev_keycode(const int key)
 {
-	return x_keycode_to_pc_keycode[key];
+    return evdev_keycode_to_pc_keycode[key];
 }
diff --git a/x_keymap.h b/x_keymap.h
new file mode 100644
index 0000000..2042ce0
--- /dev/null
+++ b/x_keymap.h
@@ -0,0 +1,32 @@
+/*
+ * QEMU SDL display driver
+ *
+ * Copyright (c) 2003 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef QEMU_X_KEYMAP_H
+#define QEMU_X_KEYMAP_H
+
+extern uint8_t translate_xfree86_keycode(const int key);
+
+extern uint8_t translate_evdev_keycode(const int key);
+
+#endif