pull in more code from PicoDrive
[pcsx_rearmed.git] / frontend / linux / oshide.c
1 /*
2  * (C) GraÅžvydas "notaz" Ignotas, 2009-2010
3  *
4  * This work is licensed under the terms of any of these licenses
5  * (at your option):
6  *  - GNU GPL, version 2 or later.
7  *  - GNU LGPL, version 2.1 or later.
8  * See the COPYING file in the top-level directory.
9  */
10
11 #include <stdio.h>
12 #include <string.h>
13 #include <pthread.h>
14
15 #include <dlfcn.h>
16 #include <X11/Xlib.h>
17 #include <X11/Xutil.h>
18
19 #include <sys/types.h>
20 #include <sys/stat.h>
21 #include <fcntl.h>
22 #include <unistd.h>
23 #include <sys/ioctl.h>
24 #include <termios.h>
25 #include <linux/kd.h>
26
27 #define PFX "oshide: "
28
29 #define FPTR(f) typeof(f) * p##f
30 #define FPTR_LINK(xf, dl, f) { \
31         xf.p##f = dlsym(dl, #f); \
32         if (xf.p##f == NULL) { \
33                 fprintf(stderr, "missing symbol: %s\n", #f); \
34                 goto fail; \
35         } \
36 }
37
38 struct xfuncs {
39 FPTR(XCreateBitmapFromData);
40 FPTR(XCreatePixmapCursor);
41 FPTR(XFreePixmap);
42 FPTR(XOpenDisplay);
43 FPTR(XDisplayName);
44 FPTR(XCloseDisplay);
45 FPTR(XCreateSimpleWindow);
46 FPTR(XChangeWindowAttributes);
47 FPTR(XSelectInput);
48 FPTR(XMapWindow);
49 FPTR(XNextEvent);
50 FPTR(XCheckTypedEvent);
51 FPTR(XUnmapWindow);
52 FPTR(XGrabKeyboard);
53 };
54
55
56 static Cursor transparent_cursor(struct xfuncs *xf, Display *display, Window win)
57 {
58         Cursor cursor;
59         Pixmap pix;
60         XColor dummy;
61         char d = 0;
62
63         memset(&dummy, 0, sizeof(dummy));
64         pix = xf->pXCreateBitmapFromData(display, win, &d, 1, 1);
65         cursor = xf->pXCreatePixmapCursor(display, pix, pix,
66                         &dummy, &dummy, 0, 0);
67         xf->pXFreePixmap(display, pix);
68         return cursor;
69 }
70
71 static void *x11h_handler(void *arg)
72 {
73         struct xfuncs xf;
74         unsigned int display_width, display_height;
75         XSetWindowAttributes attributes;
76         Window win;
77         XEvent report;
78         Display *display;
79         Visual *visual;
80         void *x11lib;
81         int screen;
82
83         memset(&xf, 0, sizeof(xf));
84         x11lib = dlopen("libX11.so.6", RTLD_LAZY);
85         if (x11lib == NULL) {
86                 fprintf(stderr, "libX11.so load failed:\n%s\n", dlerror());
87                 goto fail;
88         }
89         FPTR_LINK(xf, x11lib, XCreateBitmapFromData);
90         FPTR_LINK(xf, x11lib, XCreatePixmapCursor);
91         FPTR_LINK(xf, x11lib, XFreePixmap);
92         FPTR_LINK(xf, x11lib, XOpenDisplay);
93         FPTR_LINK(xf, x11lib, XDisplayName);
94         FPTR_LINK(xf, x11lib, XCloseDisplay);
95         FPTR_LINK(xf, x11lib, XCreateSimpleWindow);
96         FPTR_LINK(xf, x11lib, XChangeWindowAttributes);
97         FPTR_LINK(xf, x11lib, XSelectInput);
98         FPTR_LINK(xf, x11lib, XMapWindow);
99         FPTR_LINK(xf, x11lib, XNextEvent);
100         FPTR_LINK(xf, x11lib, XCheckTypedEvent);
101         FPTR_LINK(xf, x11lib, XUnmapWindow);
102         FPTR_LINK(xf, x11lib, XGrabKeyboard);
103
104         //XInitThreads();
105
106         display = xf.pXOpenDisplay(NULL);
107         if (display == NULL)
108         {
109                 fprintf(stderr, "cannot connect to X server %s, X handling disabled.\n",
110                                 xf.pXDisplayName(NULL));
111                 goto fail2;
112         }
113
114         visual = DefaultVisual(display, 0);
115         if (visual->class != TrueColor)
116                 fprintf(stderr, PFX "warning: non true color visual\n");
117
118         printf(PFX "X vendor: %s, rel: %d, display: %s, protocol ver: %d.%d\n", ServerVendor(display),
119                 VendorRelease(display), DisplayString(display), ProtocolVersion(display),
120                 ProtocolRevision(display));
121
122         screen = DefaultScreen(display);
123
124         display_width = DisplayWidth(display, screen);
125         display_height = DisplayHeight(display, screen);
126         printf(PFX "display is %dx%d\n", display_width, display_height);
127
128         win = xf.pXCreateSimpleWindow(display,
129                         RootWindow(display, screen),
130                         0, 0, display_width, display_height, 0,
131                         BlackPixel(display, screen),
132                         BlackPixel(display, screen));
133
134         attributes.override_redirect = True;
135         attributes.cursor = transparent_cursor(&xf, display, win);
136         xf.pXChangeWindowAttributes(display, win, CWOverrideRedirect | CWCursor, &attributes);
137
138         xf.pXSelectInput(display, win, ExposureMask | FocusChangeMask | KeyPressMask | KeyReleaseMask);
139         xf.pXMapWindow(display, win);
140         xf.pXGrabKeyboard(display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
141         // XSetIOErrorHandler
142
143         while (1)
144         {
145                 xf.pXNextEvent(display, &report);
146                 switch (report.type)
147                 {
148                         case Expose:
149                                 while (xf.pXCheckTypedEvent(display, Expose, &report))
150                                         ;
151                                 break;
152
153                         case FocusOut:
154                                 // XFocusChangeEvent
155                                 // printf("focus out\n");
156                                 // xf.pXUnmapWindow(display, win);
157                                 break;
158
159                         case KeyPress:
160                                 // printf("press %d\n", report.xkey.keycode);
161                                 break;
162
163                         default:
164                                 break;
165                 }
166         }
167
168 fail2:
169         dlclose(x11lib);
170 fail:
171         fprintf(stderr, "x11 handling disabled.\n");
172         return NULL;
173 }
174
175 static struct termios g_kbd_termios_saved;
176 static int g_kbdfd;
177
178 static void hidecon_start(void)
179 {
180         struct termios kbd_termios;
181         int mode;
182
183         g_kbdfd = open("/dev/tty", O_RDWR);
184         if (g_kbdfd == -1) {
185                 perror(PFX "open /dev/tty");
186                 return;
187         }
188
189         if (ioctl(g_kbdfd, KDGETMODE, &mode) == -1) {
190                 perror(PFX "(not hiding FB): KDGETMODE");
191                 goto fail;
192         }
193
194         if (tcgetattr(g_kbdfd, &kbd_termios) == -1) {
195                 perror(PFX "tcgetattr");
196                 goto fail;
197         }
198
199         g_kbd_termios_saved = kbd_termios;
200         kbd_termios.c_lflag &= ~(ICANON | ECHO); // | ISIG);
201         kbd_termios.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON);
202         kbd_termios.c_cc[VMIN] = 0;
203         kbd_termios.c_cc[VTIME] = 0;
204
205         if (tcsetattr(g_kbdfd, TCSAFLUSH, &kbd_termios) == -1) {
206                 perror(PFX "tcsetattr");
207                 goto fail;
208         }
209
210         if (ioctl(g_kbdfd, KDSETMODE, KD_GRAPHICS) == -1) {
211                 perror(PFX "KDSETMODE KD_GRAPHICS");
212                 tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved);
213                 goto fail;
214         }
215
216         return;
217
218 fail:
219         close(g_kbdfd);
220         g_kbdfd = -1;
221 }
222
223 static void hidecon_end(void)
224 {
225         if (g_kbdfd < 0)
226                 return;
227
228         if (ioctl(g_kbdfd, KDSETMODE, KD_TEXT) == -1)
229                 perror(PFX "KDSETMODE KD_TEXT");
230
231         if (tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved) == -1)
232                 perror(PFX "tcsetattr");
233
234         close(g_kbdfd);
235         g_kbdfd = -1;
236 }
237
238 int oshide_init(void)
239 {
240         pthread_t tid;
241         int ret;
242
243         ret = pthread_create(&tid, NULL, x11h_handler, NULL);
244         if (ret != 0) {
245                 fprintf(stderr, PFX "failed to create thread: %d\n", ret);
246                 return ret;
247         }
248         pthread_detach(tid);
249
250         hidecon_start();
251
252         return 0;
253 }
254
255 void oshide_finish(void)
256 {
257         /* XXX: the X thread.. */
258
259         hidecon_end();
260 }
261
262 #if 0
263 int main()
264 {
265         x11h_init();
266         sleep(5);
267 }
268 #endif