SDL support for VGA, keyboard and mouse
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@348 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/sdl.c b/sdl.c
new file mode 100644
index 0000000..e9c28f2
--- /dev/null
+++ b/sdl.c
@@ -0,0 +1,275 @@
+/*
+ * 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.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <getopt.h>
+#include <inttypes.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <time.h>
+#include <sys/time.h>
+#include <malloc.h>
+#include <termios.h>
+#include <sys/poll.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include <netinet/in.h>
+
+#include <SDL.h>
+
+#include "cpu-i386.h"
+#include "exec.h"
+
+#include "vl.h"
+
+static SDL_Surface *screen;
+static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
+
+static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
+{
+ SDL_UpdateRect(screen, x, y, w, h);
+}
+
+static void sdl_resize(DisplayState *ds, int w, int h)
+{
+ int flags;
+
+ // printf("resizing to %d %d\n", w, h);
+
+ flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
+ flags |= SDL_RESIZABLE;
+ screen = SDL_SetVideoMode(w, h, 0, flags);
+ if (!screen) {
+ fprintf(stderr, "Could not open SDL display\n");
+ exit(1);
+ }
+ ds->data = screen->pixels;
+ ds->linesize = screen->pitch;
+ ds->depth = screen->format->BitsPerPixel;
+}
+
+static const uint32_t x_keycode_to_pc_keycode[61] = {
+ 0x47e0, /* 97 Home */
+ 0x48e0, /* 98 Up */
+ 0x49e0, /* 99 PgUp */
+ 0x4be0, /* 100 Left */
+ 0x4c, /* 101 KP-5 */
+ 0x4de0, /* 102 Right */
+ 0x4fe0, /* 103 End */
+ 0x50e0, /* 104 Down */
+ 0x51e0, /* 105 PgDn */
+ 0x52e0, /* 106 Ins */
+ 0x53e0, /* 107 Del */
+ 0x1ce0, /* 108 Enter */
+ 0x1de0, /* 109 Ctrl-R */
+ 0x451de1, /* 110 Pause */
+ 0x37e0, /* 111 Print */
+ 0x35e0, /* 112 Divide */
+ 0x38e0, /* 113 Alt-R */
+ 0x46e0, /* 114 Break */
+ 0x0, /* 115 */
+ 0x0, /* 116 */
+ 0x0, /* 117 */
+ 0x0, /* 118 */
+ 0x0, /* 119 */
+ 0x0, /* 120 */
+ 0x0, /* 121 */
+ 0x0, /* 122 */
+ 0x0, /* 123 */
+ 0x0, /* 124 */
+ 0x0, /* 125 */
+ 0x0, /* 126 */
+ 0x0, /* 127 */
+ 0x0, /* 128 */
+ 0x0, /* 129 */
+ 0x0, /* 130 */
+ 0x0, /* 131 */
+ 0x0, /* 132 */
+ 0x0, /* 133 */
+ 0x0, /* 134 */
+ 0x0, /* 135 */
+ 0x47, /* 136 KP_7 */
+ 0x48, /* 137 KP_8 */
+ 0x49, /* 138 KP_9 */
+ 0x4b, /* 139 KP_4 */
+ 0x4c, /* 140 KP_5 */
+ 0x4d, /* 141 KP_6 */
+ 0x4f, /* 142 KP_1 */
+ 0x50, /* 143 KP_2 */
+ 0x51, /* 144 KP_3 */
+ 0x52, /* 145 KP_0 */
+ 0x53, /* 146 KP_. */
+ 0x47, /* 147 KP_HOME */
+ 0x48, /* 148 KP_UP */
+ 0x49, /* 149 KP_PgUp */
+ 0x4b, /* 150 KP_Left */
+ 0x4c, /* 151 KP_ */
+ 0x4d, /* 152 KP_Right */
+ 0x4f, /* 153 KP_End */
+ 0x50, /* 154 KP_Down */
+ 0x51, /* 155 KP_PgDn */
+ 0x52, /* 156 KP_Ins */
+ 0x53, /* 157 KP_Del */
+};
+
+static void sdl_process_key(SDL_KeyboardEvent *ev)
+{
+ int keycode, v;
+
+ /* XXX: not portable, but avoids complicated mappings */
+ keycode = ev->keysym.scancode;
+ if (keycode < 9) {
+ keycode = 0;
+ } else if (keycode < 97) {
+ keycode -= 8; /* just an offset */
+ } else if (keycode < 158) {
+ /* use conversion table */
+ keycode = x_keycode_to_pc_keycode[keycode - 97];
+ } else {
+ keycode = 0;
+ }
+
+ /* now send the key code */
+ while (keycode != 0) {
+ v = keycode & 0xff;
+ if (ev->type == SDL_KEYUP)
+ v |= 0x80;
+ kbd_put_keycode(v);
+ keycode >>= 8;
+ }
+}
+
+static void sdl_grab_start(void)
+{
+ SDL_WM_SetCaption("QEMU - Press Ctrl-Shift to exit grab", "QEMU");
+ SDL_ShowCursor(0);
+ SDL_WM_GrabInput(SDL_GRAB_ON);
+ /* dummy read to avoid moving the mouse */
+ SDL_GetRelativeMouseState(NULL, NULL);
+ gui_grab = 1;
+}
+
+static void sdl_grab_end(void)
+{
+ SDL_WM_SetCaption("QEMU", "QEMU");
+ SDL_WM_GrabInput(SDL_GRAB_OFF);
+ SDL_ShowCursor(1);
+ gui_grab = 0;
+}
+
+static void sdl_send_mouse_event(void)
+{
+ int dx, dy, dz, state, buttons;
+ state = SDL_GetRelativeMouseState(&dx, &dy);
+ buttons = 0;
+ if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
+ buttons |= MOUSE_EVENT_LBUTTON;
+ if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
+ buttons |= MOUSE_EVENT_RBUTTON;
+ if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
+ buttons |= MOUSE_EVENT_MBUTTON;
+ /* XXX: test wheel */
+ dz = 0;
+ if (state & SDL_BUTTON(SDL_BUTTON_WHEELUP))
+ dz--;
+ if (state & SDL_BUTTON(SDL_BUTTON_WHEELDOWN))
+ dz++;
+ kbd_mouse_event(dx, dy, dz, buttons);
+}
+
+static void sdl_refresh(DisplayState *ds)
+{
+ SDL_Event ev1, *ev = &ev1;
+
+ vga_update_display();
+ while (SDL_PollEvent(ev)) {
+ switch (ev->type) {
+ case SDL_VIDEOEXPOSE:
+ sdl_update(ds, 0, 0, screen->w, screen->h);
+ break;
+ case SDL_KEYDOWN:
+ case SDL_KEYUP:
+ if (ev->type == SDL_KEYDOWN) {
+ if ((SDL_GetModState() & (KMOD_LSHIFT | KMOD_LCTRL)) ==
+ (KMOD_LSHIFT | KMOD_LCTRL)) {
+ /* exit/enter grab if pressing Ctrl-Shift */
+ if (!gui_grab)
+ sdl_grab_start();
+ else
+ sdl_grab_end();
+ }
+ }
+ sdl_process_key(&ev->key);
+ break;
+ case SDL_QUIT:
+ reset_requested = 1;
+ break;
+ case SDL_MOUSEMOTION:
+ if (gui_grab) {
+ sdl_send_mouse_event();
+ }
+ break;
+ case SDL_MOUSEBUTTONDOWN:
+ case SDL_MOUSEBUTTONUP:
+ {
+ SDL_MouseButtonEvent *bev = &ev->button;
+ if (!gui_grab) {
+ if (ev->type == SDL_MOUSEBUTTONDOWN &&
+ (bev->state & SDL_BUTTON_LMASK)) {
+ /* start grabbing all events */
+ sdl_grab_start();
+ }
+ } else {
+ sdl_send_mouse_event();
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+void sdl_display_init(DisplayState *ds)
+{
+ int flags;
+
+ flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
+ if (SDL_Init (flags)) {
+ fprintf(stderr, "Could not initialize SDL - exiting\n");
+ exit(1);
+ }
+ ds->dpy_update = sdl_update;
+ ds->dpy_resize = sdl_resize;
+ ds->dpy_refresh = sdl_refresh;
+
+ sdl_resize(ds, 640, 400);
+ SDL_WM_SetCaption("QEMU", "QEMU");
+ SDL_EnableKeyRepeat(250, 50);
+ gui_grab = 0;
+}
