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a09e091a JB |
1 | /* |
2 | * Xephyr - A kdrive X server thats runs in a host X window. | |
3 | * Authored by Matthew Allum <mallum@o-hand.com> | |
4 | * | |
5 | * Copyright © 2004 Nokia | |
6 | * | |
7 | * Permission to use, copy, modify, distribute, and sell this software and its | |
8 | * documentation for any purpose is hereby granted without fee, provided that | |
9 | * the above copyright notice appear in all copies and that both that | |
10 | * copyright notice and this permission notice appear in supporting | |
11 | * documentation, and that the name of Nokia not be used in | |
12 | * advertising or publicity pertaining to distribution of the software without | |
13 | * specific, written prior permission. Nokia makes no | |
14 | * representations about the suitability of this software for any purpose. It | |
15 | * is provided "as is" without express or implied warranty. | |
16 | * | |
17 | * NOKIA DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
18 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
19 | * EVENT SHALL NOKIA BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
20 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
21 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
22 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |
23 | * PERFORMANCE OF THIS SOFTWARE. | |
24 | */ | |
25 | ||
26 | #ifdef HAVE_CONFIG_H | |
27 | #include <kdrive-config.h> | |
28 | #endif | |
29 | ||
30 | #include "hostx.h" | |
31 | #include "input.h" | |
32 | ||
33 | #include <stdlib.h> | |
34 | #include <stdio.h> | |
35 | #include <unistd.h> | |
36 | #include <string.h> /* for memset */ | |
37 | #include <errno.h> | |
38 | #include <time.h> | |
39 | ||
40 | #include <sys/ipc.h> | |
41 | #include <sys/shm.h> | |
42 | #include <sys/time.h> | |
43 | ||
44 | #include <X11/keysym.h> | |
45 | #include <xcb/xcb.h> | |
46 | #include <xcb/xproto.h> | |
47 | #include <xcb/xcb_icccm.h> | |
48 | #include <xcb/xcb_aux.h> | |
49 | #include <xcb/shm.h> | |
50 | #include <xcb/xcb_image.h> | |
51 | #include <xcb/shape.h> | |
52 | #include <xcb/xcb_keysyms.h> | |
53 | #ifdef XF86DRI | |
54 | #include <xcb/xf86dri.h> | |
55 | #include <xcb/glx.h> | |
56 | #endif /* XF86DRI */ | |
57 | #include "ephyrlog.h" | |
58 | #include "ephyr.h" | |
59 | ||
60 | struct EphyrHostXVars { | |
61 | char *server_dpy_name; | |
62 | xcb_connection_t *conn; | |
63 | int screen; | |
64 | xcb_visualtype_t *visual; | |
65 | Window winroot; | |
66 | xcb_gcontext_t gc; | |
67 | int depth; | |
68 | Bool use_sw_cursor; | |
69 | Bool use_fullscreen; | |
70 | Bool have_shm; | |
71 | ||
72 | int n_screens; | |
73 | KdScreenInfo **screens; | |
74 | ||
75 | long damage_debug_msec; | |
76 | ||
77 | unsigned long cmap[256]; | |
78 | }; | |
79 | ||
80 | /* memset ( missing> ) instead of below */ | |
81 | /*static EphyrHostXVars HostX = { "?", 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};*/ | |
82 | static EphyrHostXVars HostX; | |
83 | ||
84 | static int HostXWantDamageDebug = 0; | |
85 | ||
86 | extern EphyrKeySyms ephyrKeySyms; | |
87 | ||
88 | extern int monitorResolution; | |
89 | ||
90 | extern Bool EphyrWantResize; | |
91 | ||
92 | char *ephyrResName = NULL; | |
93 | int ephyrResNameFromCmd = 0; | |
94 | char *ephyrTitle = NULL; | |
95 | ||
96 | static void | |
97 | hostx_set_fullscreen_hint(void); | |
98 | ||
99 | #define host_depth_matches_server(_vars) (HostX.depth == (_vars)->server_depth) | |
100 | ||
101 | int | |
102 | hostx_want_screen_size(KdScreenInfo *screen, int *width, int *height) | |
103 | { | |
104 | EphyrScrPriv *scrpriv = screen->driver; | |
105 | ||
106 | if (scrpriv && (scrpriv->win_pre_existing != None || | |
107 | HostX.use_fullscreen == TRUE)) { | |
108 | *width = scrpriv->win_width; | |
109 | *height = scrpriv->win_height; | |
110 | return 1; | |
111 | } | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
116 | void | |
117 | hostx_add_screen(KdScreenInfo *screen, unsigned long win_id, int screen_num) | |
118 | { | |
119 | EphyrScrPriv *scrpriv = screen->driver; | |
120 | int index = HostX.n_screens; | |
121 | ||
122 | HostX.n_screens += 1; | |
123 | HostX.screens = realloc(HostX.screens, | |
124 | HostX.n_screens * sizeof(HostX.screens[0])); | |
125 | HostX.screens[index] = screen; | |
126 | ||
127 | scrpriv->screen = screen; | |
128 | scrpriv->win_pre_existing = win_id; | |
129 | } | |
130 | ||
131 | void | |
132 | hostx_set_display_name(char *name) | |
133 | { | |
134 | HostX.server_dpy_name = strdup(name); | |
135 | } | |
136 | ||
137 | void | |
138 | hostx_set_screen_number(KdScreenInfo *screen, int number) | |
139 | { | |
140 | EphyrScrPriv *scrpriv = screen->driver; | |
141 | ||
142 | if (scrpriv) { | |
143 | scrpriv->mynum = number; | |
144 | hostx_set_win_title(screen, ""); | |
145 | } | |
146 | } | |
147 | ||
148 | void | |
149 | hostx_set_win_title(KdScreenInfo *screen, const char *extra_text) | |
150 | { | |
151 | EphyrScrPriv *scrpriv = screen->driver; | |
152 | ||
153 | if (!scrpriv) | |
154 | return; | |
155 | ||
156 | if (ephyrTitle) { | |
157 | xcb_icccm_set_wm_name(HostX.conn, | |
158 | scrpriv->win, | |
159 | XCB_ATOM_STRING, | |
160 | 8, | |
161 | strlen(ephyrTitle), | |
162 | ephyrTitle); | |
163 | } else { | |
164 | #define BUF_LEN 256 | |
165 | char buf[BUF_LEN + 1]; | |
166 | ||
167 | memset(buf, 0, BUF_LEN + 1); | |
168 | snprintf(buf, BUF_LEN, "Xephyr on %s.%d %s", | |
169 | HostX.server_dpy_name, | |
170 | scrpriv->mynum, (extra_text != NULL) ? extra_text : ""); | |
171 | ||
172 | xcb_icccm_set_wm_name(HostX.conn, | |
173 | scrpriv->win, | |
174 | XCB_ATOM_STRING, | |
175 | 8, | |
176 | strlen(buf), | |
177 | buf); | |
178 | xcb_flush(HostX.conn); | |
179 | } | |
180 | } | |
181 | ||
182 | int | |
183 | hostx_want_host_cursor(void) | |
184 | { | |
185 | return !HostX.use_sw_cursor; | |
186 | } | |
187 | ||
188 | void | |
189 | hostx_use_sw_cursor(void) | |
190 | { | |
191 | HostX.use_sw_cursor = TRUE; | |
192 | } | |
193 | ||
194 | int | |
195 | hostx_want_preexisting_window(KdScreenInfo *screen) | |
196 | { | |
197 | EphyrScrPriv *scrpriv = screen->driver; | |
198 | ||
199 | if (scrpriv && scrpriv->win_pre_existing) { | |
200 | return 1; | |
201 | } | |
202 | else { | |
203 | return 0; | |
204 | } | |
205 | } | |
206 | ||
207 | void | |
208 | hostx_use_fullscreen(void) | |
209 | { | |
210 | HostX.use_fullscreen = TRUE; | |
211 | } | |
212 | ||
213 | int | |
214 | hostx_want_fullscreen(void) | |
215 | { | |
216 | return HostX.use_fullscreen; | |
217 | } | |
218 | ||
219 | static xcb_intern_atom_cookie_t cookie_WINDOW_STATE, | |
220 | cookie_WINDOW_STATE_FULLSCREEN; | |
221 | ||
222 | static void | |
223 | hostx_set_fullscreen_hint(void) | |
224 | { | |
225 | xcb_atom_t atom_WINDOW_STATE, atom_WINDOW_STATE_FULLSCREEN; | |
226 | int index; | |
227 | xcb_intern_atom_reply_t *reply; | |
228 | ||
229 | reply = xcb_intern_atom_reply(HostX.conn, cookie_WINDOW_STATE, NULL); | |
230 | atom_WINDOW_STATE = reply->atom; | |
231 | free(reply); | |
232 | ||
233 | reply = xcb_intern_atom_reply(HostX.conn, cookie_WINDOW_STATE_FULLSCREEN, | |
234 | NULL); | |
235 | atom_WINDOW_STATE_FULLSCREEN = reply->atom; | |
236 | free(reply); | |
237 | ||
238 | for (index = 0; index < HostX.n_screens; index++) { | |
239 | EphyrScrPriv *scrpriv = HostX.screens[index]->driver; | |
240 | xcb_change_property(HostX.conn, | |
241 | PropModeReplace, | |
242 | scrpriv->win, | |
243 | atom_WINDOW_STATE, | |
244 | XCB_ATOM_ATOM, | |
245 | 32, | |
246 | 1, | |
247 | &atom_WINDOW_STATE_FULLSCREEN); | |
248 | } | |
249 | } | |
250 | ||
251 | static void | |
252 | hostx_toggle_damage_debug(void) | |
253 | { | |
254 | HostXWantDamageDebug ^= 1; | |
255 | } | |
256 | ||
257 | void | |
258 | hostx_handle_signal(int signum) | |
259 | { | |
260 | hostx_toggle_damage_debug(); | |
261 | EPHYR_DBG("Signal caught. Damage Debug:%i\n", HostXWantDamageDebug); | |
262 | } | |
263 | ||
264 | void | |
265 | hostx_use_resname(char *name, int fromcmd) | |
266 | { | |
267 | ephyrResName = name; | |
268 | ephyrResNameFromCmd = fromcmd; | |
269 | } | |
270 | ||
271 | void | |
272 | hostx_set_title(char *title) | |
273 | { | |
274 | ephyrTitle = title; | |
275 | } | |
276 | ||
277 | #ifdef __SUNPRO_C | |
278 | /* prevent "Function has no return statement" error for x_io_error_handler */ | |
279 | #pragma does_not_return(exit) | |
280 | #endif | |
281 | ||
282 | int | |
283 | hostx_init(void) | |
284 | { | |
285 | uint32_t attr; | |
286 | xcb_cursor_t empty_cursor; | |
287 | xcb_pixmap_t cursor_pxm; | |
288 | uint16_t red, green, blue; | |
289 | uint32_t pixel; | |
290 | int index; | |
291 | char *tmpstr; | |
292 | char *class_hint; | |
293 | size_t class_len; | |
294 | const xcb_query_extension_reply_t *shm_rep; | |
295 | xcb_screen_t *xscreen; | |
296 | ||
297 | attr = | |
298 | XCB_EVENT_MASK_BUTTON_PRESS | |
299 | | XCB_EVENT_MASK_BUTTON_RELEASE | |
300 | | XCB_EVENT_MASK_POINTER_MOTION | |
301 | | XCB_EVENT_MASK_KEY_PRESS | |
302 | | XCB_EVENT_MASK_KEY_RELEASE | |
303 | | XCB_EVENT_MASK_EXPOSURE | |
304 | | XCB_EVENT_MASK_STRUCTURE_NOTIFY; | |
305 | ||
306 | EPHYR_DBG("mark"); | |
307 | HostX.conn = xcb_connect(NULL, &HostX.screen); | |
308 | if (xcb_connection_has_error(HostX.conn)) { | |
309 | fprintf(stderr, "\nXephyr cannot open host display. Is DISPLAY set?\n"); | |
310 | exit(1); | |
311 | } | |
312 | ||
313 | xscreen = xcb_aux_get_screen(HostX.conn, HostX.screen); | |
314 | HostX.winroot = xscreen->root; | |
315 | HostX.gc = xcb_generate_id(HostX.conn); | |
316 | HostX.depth = xscreen->root_depth; | |
317 | HostX.visual = xcb_aux_find_visual_by_id(xscreen, xscreen->root_visual); | |
318 | ||
319 | xcb_create_gc(HostX.conn, HostX.gc, HostX.winroot, 0, NULL); | |
320 | cookie_WINDOW_STATE = xcb_intern_atom(HostX.conn, FALSE, | |
321 | strlen("_NET_WM_STATE"), | |
322 | "_NET_WM_STATE"); | |
323 | cookie_WINDOW_STATE_FULLSCREEN = | |
324 | xcb_intern_atom(HostX.conn, FALSE, | |
325 | strlen("_NET_WM_STATE_FULLSCREEN"), | |
326 | "_NET_WM_STATE_FULLSCREEN"); | |
327 | ||
328 | for (index = 0; index < HostX.n_screens; index++) { | |
329 | KdScreenInfo *screen = HostX.screens[index]; | |
330 | EphyrScrPriv *scrpriv = screen->driver; | |
331 | ||
332 | scrpriv->win = xcb_generate_id(HostX.conn); | |
333 | scrpriv->server_depth = HostX.depth; | |
334 | scrpriv->ximg = NULL; | |
335 | ||
336 | if (scrpriv->win_pre_existing != XCB_WINDOW_NONE) { | |
337 | xcb_get_geometry_reply_t *prewin_geom; | |
338 | xcb_get_geometry_cookie_t cookie; | |
339 | xcb_generic_error_t *e = NULL; | |
340 | ||
341 | /* Get screen size from existing window */ | |
342 | cookie = xcb_get_geometry(HostX.conn, | |
343 | scrpriv->win_pre_existing); | |
344 | prewin_geom = xcb_get_geometry_reply(HostX.conn, cookie, &e); | |
345 | ||
346 | if (e) { | |
347 | free(e); | |
348 | free(prewin_geom); | |
349 | fprintf (stderr, "\nXephyr -parent window' does not exist!\n"); | |
350 | exit (1); | |
351 | } | |
352 | ||
353 | scrpriv->win_width = prewin_geom->width; | |
354 | scrpriv->win_height = prewin_geom->height; | |
355 | ||
356 | free(prewin_geom); | |
357 | ||
358 | xcb_create_window(HostX.conn, | |
359 | XCB_COPY_FROM_PARENT, | |
360 | scrpriv->win, | |
361 | scrpriv->win_pre_existing, | |
362 | 0,0, | |
363 | scrpriv->win_width, | |
364 | scrpriv->win_height, | |
365 | 0, | |
366 | XCB_WINDOW_CLASS_COPY_FROM_PARENT, | |
367 | XCB_COPY_FROM_PARENT, | |
368 | XCB_CW_EVENT_MASK, | |
369 | &attr); | |
370 | } | |
371 | else { | |
372 | xcb_create_window(HostX.conn, | |
373 | XCB_COPY_FROM_PARENT, | |
374 | scrpriv->win, | |
375 | HostX.winroot, | |
376 | 0,0,100,100, /* will resize */ | |
377 | 0, | |
378 | XCB_WINDOW_CLASS_COPY_FROM_PARENT, | |
379 | XCB_COPY_FROM_PARENT, | |
380 | XCB_CW_EVENT_MASK, | |
381 | &attr); | |
382 | ||
383 | hostx_set_win_title(screen, | |
384 | "(ctrl+shift grabs mouse and keyboard)"); | |
385 | ||
386 | if (HostX.use_fullscreen) { | |
387 | scrpriv->win_width = xscreen->width_in_pixels; | |
388 | scrpriv->win_height = xscreen->height_in_pixels; | |
389 | ||
390 | hostx_set_fullscreen_hint(); | |
391 | } | |
392 | ||
393 | tmpstr = getenv("RESOURCE_NAME"); | |
394 | if (tmpstr && (!ephyrResNameFromCmd)) | |
395 | ephyrResName = tmpstr; | |
396 | class_len = strlen(ephyrResName) + 1 + strlen("Xephyr") + 1; | |
397 | class_hint = malloc(class_len); | |
398 | if (class_hint) { | |
399 | strcpy(class_hint, ephyrResName); | |
400 | strcpy(class_hint + strlen(ephyrResName) + 1, "Xephyr"); | |
401 | xcb_change_property(HostX.conn, | |
402 | XCB_PROP_MODE_REPLACE, | |
403 | scrpriv->win, | |
404 | XCB_ATOM_WM_CLASS, | |
405 | XCB_ATOM_STRING, | |
406 | 8, | |
407 | class_len, | |
408 | class_hint); | |
409 | free(class_hint); | |
410 | } | |
411 | } | |
412 | } | |
413 | ||
414 | if (!xcb_aux_parse_color("red", &red, &green, &blue)) { | |
415 | xcb_lookup_color_cookie_t c = | |
416 | xcb_lookup_color(HostX.conn, xscreen->default_colormap, 3, "red"); | |
417 | xcb_lookup_color_reply_t *reply = | |
418 | xcb_lookup_color_reply(HostX.conn, c, NULL); | |
419 | red = reply->exact_red; | |
420 | green = reply->exact_green; | |
421 | blue = reply->exact_blue; | |
422 | free(reply); | |
423 | } | |
424 | ||
425 | { | |
426 | xcb_alloc_color_cookie_t c = xcb_alloc_color(HostX.conn, | |
427 | xscreen->default_colormap, | |
428 | red, green, blue); | |
429 | xcb_alloc_color_reply_t *r = xcb_alloc_color_reply(HostX.conn, c, NULL); | |
430 | red = r->red; | |
431 | green = r->green; | |
432 | blue = r->blue; | |
433 | pixel = r->pixel; | |
434 | free(r); | |
435 | } | |
436 | ||
437 | xcb_change_gc(HostX.conn, HostX.gc, XCB_GC_FOREGROUND, &pixel); | |
438 | ||
439 | if (!hostx_want_host_cursor ()) { | |
440 | CursorVisible = TRUE; | |
441 | /* Ditch the cursor, we provide our 'own' */ | |
442 | cursor_pxm = xcb_generate_id(HostX.conn); | |
443 | xcb_create_pixmap(HostX.conn, 1, cursor_pxm, HostX.winroot, 1, 1); | |
444 | empty_cursor = xcb_generate_id(HostX.conn); | |
445 | xcb_create_cursor(HostX.conn, | |
446 | empty_cursor, | |
447 | cursor_pxm, cursor_pxm, | |
448 | 0,0,0, | |
449 | 0,0,0, | |
450 | 1,1); | |
451 | for (index = 0; index < HostX.n_screens; index++) { | |
452 | KdScreenInfo *screen = HostX.screens[index]; | |
453 | EphyrScrPriv *scrpriv = screen->driver; | |
454 | ||
455 | xcb_change_window_attributes(HostX.conn, | |
456 | scrpriv->win, | |
457 | XCB_CW_CURSOR, | |
458 | &empty_cursor); | |
459 | } | |
460 | xcb_free_pixmap(HostX.conn, cursor_pxm); | |
461 | } | |
462 | ||
463 | /* Try to get share memory ximages for a little bit more speed */ | |
464 | shm_rep = xcb_get_extension_data(HostX.conn, &xcb_shm_id); | |
465 | if (!shm_rep || !shm_rep->present || getenv("XEPHYR_NO_SHM")) { | |
466 | fprintf(stderr, "\nXephyr unable to use SHM XImages\n"); | |
467 | HostX.have_shm = FALSE; | |
468 | } | |
469 | else { | |
470 | /* Really really check we have shm - better way ?*/ | |
471 | xcb_shm_segment_info_t shminfo; | |
472 | xcb_generic_error_t *e; | |
473 | xcb_void_cookie_t cookie; | |
474 | xcb_shm_seg_t shmseg; | |
475 | ||
476 | HostX.have_shm = TRUE; | |
477 | ||
478 | shminfo.shmid = shmget(IPC_PRIVATE, 1, IPC_CREAT|0777); | |
479 | shminfo.shmaddr = shmat(shminfo.shmid,0,0); | |
480 | ||
481 | shmseg = xcb_generate_id(HostX.conn); | |
482 | cookie = xcb_shm_attach_checked(HostX.conn, shmseg, shminfo.shmid, | |
483 | TRUE); | |
484 | e = xcb_request_check(HostX.conn, cookie); | |
485 | ||
486 | if (e) { | |
487 | fprintf(stderr, "\nXephyr unable to use SHM XImages\n"); | |
488 | HostX.have_shm = FALSE; | |
489 | free(e); | |
490 | } | |
491 | ||
492 | shmdt(shminfo.shmaddr); | |
493 | shmctl(shminfo.shmid, IPC_RMID, 0); | |
494 | } | |
495 | ||
496 | xcb_flush(HostX.conn); | |
497 | ||
498 | /* Setup the pause time between paints when debugging updates */ | |
499 | ||
500 | HostX.damage_debug_msec = 20000; /* 1/50 th of a second */ | |
501 | ||
502 | if (getenv("XEPHYR_PAUSE")) { | |
503 | HostX.damage_debug_msec = strtol(getenv("XEPHYR_PAUSE"), NULL, 0); | |
504 | EPHYR_DBG("pause is %li\n", HostX.damage_debug_msec); | |
505 | } | |
506 | ||
507 | return 1; | |
508 | } | |
509 | ||
510 | int | |
511 | hostx_get_depth(void) | |
512 | { | |
513 | return HostX.depth; | |
514 | } | |
515 | ||
516 | int | |
517 | hostx_get_server_depth(KdScreenInfo *screen) | |
518 | { | |
519 | EphyrScrPriv *scrpriv = screen->driver; | |
520 | ||
521 | return scrpriv ? scrpriv->server_depth : 0; | |
522 | } | |
523 | ||
524 | int | |
525 | hostx_get_bpp(KdScreenInfo *screen) | |
526 | { | |
527 | EphyrScrPriv *scrpriv = screen->driver; | |
528 | ||
529 | if (!scrpriv) | |
530 | return 0; | |
531 | ||
532 | if (host_depth_matches_server(scrpriv)) | |
533 | return HostX.visual->bits_per_rgb_value; | |
534 | else | |
535 | return scrpriv->server_depth; /*XXX correct ?*/ | |
536 | } | |
537 | ||
538 | void | |
539 | hostx_get_visual_masks(KdScreenInfo *screen, | |
540 | CARD32 *rmsk, CARD32 *gmsk, CARD32 *bmsk) | |
541 | { | |
542 | EphyrScrPriv *scrpriv = screen->driver; | |
543 | ||
544 | if (!scrpriv) | |
545 | return; | |
546 | ||
547 | if (host_depth_matches_server(scrpriv)) { | |
548 | *rmsk = HostX.visual->red_mask; | |
549 | *gmsk = HostX.visual->green_mask; | |
550 | *bmsk = HostX.visual->blue_mask; | |
551 | } | |
552 | else if (scrpriv->server_depth == 16) { | |
553 | /* Assume 16bpp 565 */ | |
554 | *rmsk = 0xf800; | |
555 | *gmsk = 0x07e0; | |
556 | *bmsk = 0x001f; | |
557 | } | |
558 | else { | |
559 | *rmsk = 0x0; | |
560 | *gmsk = 0x0; | |
561 | *bmsk = 0x0; | |
562 | } | |
563 | } | |
564 | ||
565 | static int | |
566 | hostx_calculate_color_shift(unsigned long mask) | |
567 | { | |
568 | int shift = 1; | |
569 | ||
570 | /* count # of bits in mask */ | |
571 | while ((mask = (mask >> 1))) | |
572 | shift++; | |
573 | /* cmap entry is an unsigned char so adjust it by size of that */ | |
574 | shift = shift - sizeof(unsigned char) * 8; | |
575 | if (shift < 0) | |
576 | shift = 0; | |
577 | return shift; | |
578 | } | |
579 | ||
580 | void | |
581 | hostx_set_cmap_entry(unsigned char idx, | |
582 | unsigned char r, unsigned char g, unsigned char b) | |
583 | { | |
584 | /* need to calculate the shifts for RGB because server could be BGR. */ | |
585 | /* XXX Not sure if this is correct for 8 on 16, but this works for 8 on 24.*/ | |
586 | static int rshift, bshift, gshift = 0; | |
587 | static int first_time = 1; | |
588 | ||
589 | if (first_time) { | |
590 | first_time = 0; | |
591 | rshift = hostx_calculate_color_shift(HostX.visual->red_mask); | |
592 | gshift = hostx_calculate_color_shift(HostX.visual->green_mask); | |
593 | bshift = hostx_calculate_color_shift(HostX.visual->blue_mask); | |
594 | } | |
595 | HostX.cmap[idx] = ((r << rshift) & HostX.visual->red_mask) | | |
596 | ((g << gshift) & HostX.visual->green_mask) | | |
597 | ((b << bshift) & HostX.visual->blue_mask); | |
598 | } | |
599 | ||
600 | /** | |
601 | * hostx_screen_init creates the XImage that will contain the front buffer of | |
602 | * the ephyr screen, and possibly offscreen memory. | |
603 | * | |
604 | * @param width width of the screen | |
605 | * @param height height of the screen | |
606 | * @param buffer_height height of the rectangle to be allocated. | |
607 | * | |
608 | * hostx_screen_init() creates an XImage, using MIT-SHM if it's available. | |
609 | * buffer_height can be used to create a larger offscreen buffer, which is used | |
610 | * by fakexa for storing offscreen pixmap data. | |
611 | */ | |
612 | void * | |
613 | hostx_screen_init(KdScreenInfo *screen, | |
614 | int width, int height, int buffer_height, | |
615 | int *bytes_per_line, int *bits_per_pixel) | |
616 | { | |
617 | EphyrScrPriv *scrpriv = screen->driver; | |
618 | Bool shm_success = FALSE; | |
619 | ||
620 | if (!scrpriv) { | |
621 | fprintf(stderr, "%s: Error in accessing hostx data\n", __func__); | |
622 | exit(1); | |
623 | } | |
624 | ||
625 | EPHYR_DBG("host_screen=%p wxh=%dx%d, buffer_height=%d", | |
626 | host_screen, width, height, buffer_height); | |
627 | ||
628 | if (scrpriv->ximg != NULL) { | |
629 | /* Free up the image data if previously used | |
630 | * i.ie called by server reset | |
631 | */ | |
632 | ||
633 | if (HostX.have_shm) { | |
634 | xcb_shm_detach(HostX.conn, scrpriv->shminfo.shmseg); | |
635 | xcb_image_destroy(scrpriv->ximg); | |
636 | shmdt(scrpriv->shminfo.shmaddr); | |
637 | shmctl(scrpriv->shminfo.shmid, IPC_RMID, 0); | |
638 | } | |
639 | else { | |
640 | free(scrpriv->ximg->data); | |
641 | scrpriv->ximg->data = NULL; | |
642 | ||
643 | xcb_image_destroy(scrpriv->ximg); | |
644 | } | |
645 | } | |
646 | ||
647 | if (HostX.have_shm) { | |
648 | scrpriv->ximg = xcb_image_create_native(HostX.conn, | |
649 | width, | |
650 | buffer_height, | |
651 | XCB_IMAGE_FORMAT_Z_PIXMAP, | |
652 | HostX.depth, | |
653 | NULL, | |
654 | ~0, | |
655 | NULL); | |
656 | ||
657 | scrpriv->shminfo.shmid = | |
658 | shmget(IPC_PRIVATE, | |
659 | scrpriv->ximg->stride * buffer_height, | |
660 | IPC_CREAT | 0777); | |
661 | scrpriv->ximg->data = shmat(scrpriv->shminfo.shmid, 0, 0); | |
662 | scrpriv->shminfo.shmaddr = scrpriv->ximg->data; | |
663 | ||
664 | if (scrpriv->ximg->data == (uint8_t *) -1) { | |
665 | EPHYR_DBG | |
666 | ("Can't attach SHM Segment, falling back to plain XImages"); | |
667 | HostX.have_shm = FALSE; | |
668 | xcb_image_destroy (scrpriv->ximg); | |
669 | shmctl(scrpriv->shminfo.shmid, IPC_RMID, 0); | |
670 | } | |
671 | else { | |
672 | EPHYR_DBG("SHM segment attached %p", scrpriv->shminfo.shmaddr); | |
673 | scrpriv->shminfo.shmseg = xcb_generate_id(HostX.conn); | |
674 | xcb_shm_attach(HostX.conn, | |
675 | scrpriv->shminfo.shmseg, | |
676 | scrpriv->shminfo.shmid, | |
677 | FALSE); | |
678 | shm_success = TRUE; | |
679 | } | |
680 | } | |
681 | ||
682 | if (!shm_success) { | |
683 | EPHYR_DBG("Creating image %dx%d for screen scrpriv=%p\n", | |
684 | width, buffer_height, scrpriv); | |
685 | scrpriv->ximg = xcb_image_create_native(HostX.conn, | |
686 | width, | |
687 | buffer_height, | |
688 | XCB_IMAGE_FORMAT_Z_PIXMAP, | |
689 | HostX.depth, | |
690 | NULL, | |
691 | ~0, | |
692 | NULL); | |
693 | ||
694 | scrpriv->ximg->data = | |
695 | malloc(scrpriv->ximg->stride * buffer_height); | |
696 | } | |
697 | ||
698 | { | |
699 | uint32_t mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT; | |
700 | uint32_t values[2] = {width, height}; | |
701 | xcb_configure_window(HostX.conn, scrpriv->win, mask, values); | |
702 | } | |
703 | ||
704 | if (scrpriv->win_pre_existing == None && !EphyrWantResize) { | |
705 | /* Ask the WM to keep our size static */ | |
706 | xcb_size_hints_t size_hints = {0}; | |
707 | size_hints.max_width = size_hints.min_width = width; | |
708 | size_hints.max_height = size_hints.min_height = height; | |
709 | size_hints.flags = (XCB_ICCCM_SIZE_HINT_P_MIN_SIZE | | |
710 | XCB_ICCCM_SIZE_HINT_P_MAX_SIZE); | |
711 | xcb_icccm_set_wm_normal_hints(HostX.conn, scrpriv->win, | |
712 | &size_hints); | |
713 | } | |
714 | ||
715 | xcb_map_window(HostX.conn, scrpriv->win); | |
716 | ||
717 | xcb_aux_sync(HostX.conn); | |
718 | ||
719 | scrpriv->win_width = width; | |
720 | scrpriv->win_height = height; | |
721 | ||
722 | if (host_depth_matches_server(scrpriv)) { | |
723 | *bytes_per_line = scrpriv->ximg->stride; | |
724 | *bits_per_pixel = scrpriv->ximg->bpp; | |
725 | ||
726 | EPHYR_DBG("Host matches server"); | |
727 | return scrpriv->ximg->data; | |
728 | } | |
729 | else { | |
730 | int bytes_per_pixel = scrpriv->server_depth >> 3; | |
731 | int stride = (width * bytes_per_pixel + 0x3) & ~0x3; | |
732 | ||
733 | *bytes_per_line = stride; | |
734 | *bits_per_pixel = scrpriv->server_depth; | |
735 | ||
736 | EPHYR_DBG("server bpp %i", bytes_per_pixel); | |
737 | scrpriv->fb_data = malloc (stride * buffer_height); | |
738 | return scrpriv->fb_data; | |
739 | } | |
740 | } | |
741 | ||
742 | static void hostx_paint_debug_rect(KdScreenInfo *screen, | |
743 | int x, int y, int width, int height); | |
744 | ||
745 | void | |
746 | hostx_paint_rect(KdScreenInfo *screen, | |
747 | int sx, int sy, int dx, int dy, int width, int height) | |
748 | { | |
749 | EphyrScrPriv *scrpriv = screen->driver; | |
750 | ||
751 | EPHYR_DBG("painting in screen %d\n", scrpriv->mynum); | |
752 | ||
753 | /* | |
754 | * Copy the image data updated by the shadow layer | |
755 | * on to the window | |
756 | */ | |
757 | ||
758 | if (HostXWantDamageDebug) { | |
759 | hostx_paint_debug_rect(screen, dx, dy, width, height); | |
760 | } | |
761 | ||
762 | /* | |
763 | * If the depth of the ephyr server is less than that of the host, | |
764 | * the kdrive fb does not point to the ximage data but to a buffer | |
765 | * ( fb_data ), we shift the various bits from this onto the XImage | |
766 | * so they match the host. | |
767 | * | |
768 | * Note, This code is pretty new ( and simple ) so may break on | |
769 | * endian issues, 32 bpp host etc. | |
770 | * Not sure if 8bpp case is right either. | |
771 | * ... and it will be slower than the matching depth case. | |
772 | */ | |
773 | ||
774 | if (!host_depth_matches_server(scrpriv)) { | |
775 | int x, y, idx, bytes_per_pixel = (scrpriv->server_depth >> 3); | |
776 | int stride = (scrpriv->win_width * bytes_per_pixel + 0x3) & ~0x3; | |
777 | unsigned char r, g, b; | |
778 | unsigned long host_pixel; | |
779 | ||
780 | EPHYR_DBG("Unmatched host depth scrpriv=%p\n", scrpriv); | |
781 | for (y = sy; y < sy + height; y++) | |
782 | for (x = sx; x < sx + width; x++) { | |
783 | idx = y * stride + x * bytes_per_pixel; | |
784 | ||
785 | switch (scrpriv->server_depth) { | |
786 | case 16: | |
787 | { | |
788 | unsigned short pixel = | |
789 | *(unsigned short *) (scrpriv->fb_data + idx); | |
790 | ||
791 | r = ((pixel & 0xf800) >> 8); | |
792 | g = ((pixel & 0x07e0) >> 3); | |
793 | b = ((pixel & 0x001f) << 3); | |
794 | ||
795 | host_pixel = (r << 16) | (g << 8) | (b); | |
796 | ||
797 | xcb_image_put_pixel(scrpriv->ximg, x, y, host_pixel); | |
798 | break; | |
799 | } | |
800 | case 8: | |
801 | { | |
802 | unsigned char pixel = | |
803 | *(unsigned char *) (scrpriv->fb_data + idx); | |
804 | xcb_image_put_pixel(scrpriv->ximg, x, y, | |
805 | HostX.cmap[pixel]); | |
806 | break; | |
807 | } | |
808 | default: | |
809 | break; | |
810 | } | |
811 | } | |
812 | } | |
813 | ||
814 | if (HostX.have_shm) { | |
815 | xcb_image_shm_put(HostX.conn, scrpriv->win, | |
816 | HostX.gc, scrpriv->ximg, | |
817 | scrpriv->shminfo, | |
818 | sx, sy, dx, dy, width, height, FALSE); | |
819 | } | |
820 | else { | |
821 | xcb_image_put(HostX.conn, scrpriv->win, HostX.gc, scrpriv->ximg, | |
822 | dx, dy, 0); | |
823 | } | |
824 | ||
825 | xcb_aux_sync(HostX.conn); | |
826 | } | |
827 | ||
828 | static void | |
829 | hostx_paint_debug_rect(KdScreenInfo *screen, | |
830 | int x, int y, int width, int height) | |
831 | { | |
832 | EphyrScrPriv *scrpriv = screen->driver; | |
833 | struct timespec tspec; | |
834 | xcb_rectangle_t rect = { .x = x, .y = y, .width = width, .height = height }; | |
835 | xcb_void_cookie_t cookie; | |
836 | xcb_generic_error_t *e; | |
837 | ||
838 | tspec.tv_sec = HostX.damage_debug_msec / (1000000); | |
839 | tspec.tv_nsec = (HostX.damage_debug_msec % 1000000) * 1000; | |
840 | ||
841 | EPHYR_DBG("msec: %li tv_sec %li, tv_msec %li", | |
842 | HostX.damage_debug_msec, tspec.tv_sec, tspec.tv_nsec); | |
843 | ||
844 | /* fprintf(stderr, "Xephyr updating: %i+%i %ix%i\n", x, y, width, height); */ | |
845 | ||
846 | cookie = xcb_poly_fill_rectangle_checked(HostX.conn, scrpriv->win, | |
847 | HostX.gc, 1, &rect); | |
848 | e = xcb_request_check(HostX.conn, cookie); | |
849 | free(e); | |
850 | ||
851 | /* nanosleep seems to work better than usleep for me... */ | |
852 | nanosleep(&tspec, NULL); | |
853 | } | |
854 | ||
855 | void | |
856 | hostx_load_keymap(void) | |
857 | { | |
858 | int min_keycode, max_keycode; | |
859 | ||
860 | min_keycode = xcb_get_setup(HostX.conn)->min_keycode; | |
861 | max_keycode = xcb_get_setup(HostX.conn)->max_keycode; | |
862 | ||
863 | EPHYR_DBG("min: %d, max: %d", min_keycode, max_keycode); | |
864 | ||
865 | ephyrKeySyms.minKeyCode = min_keycode; | |
866 | ephyrKeySyms.maxKeyCode = max_keycode; | |
867 | } | |
868 | ||
869 | xcb_connection_t * | |
870 | hostx_get_xcbconn(void) | |
871 | { | |
872 | return HostX.conn; | |
873 | } | |
874 | ||
875 | int | |
876 | hostx_get_screen(void) | |
877 | { | |
878 | return HostX.screen; | |
879 | } | |
880 | ||
881 | int | |
882 | hostx_get_window(int a_screen_number) | |
883 | { | |
884 | EphyrScrPriv *scrpriv; | |
885 | if (a_screen_number < 0 || a_screen_number >= HostX.n_screens) { | |
886 | EPHYR_LOG_ERROR("bad screen number:%d\n", a_screen_number); | |
887 | return 0; | |
888 | } | |
889 | scrpriv = HostX.screens[a_screen_number]->driver; | |
890 | return scrpriv->win; | |
891 | } | |
892 | ||
893 | int | |
894 | hostx_get_window_attributes(int a_window, EphyrHostWindowAttributes * a_attrs) | |
895 | { | |
896 | xcb_get_geometry_cookie_t geom_cookie; | |
897 | xcb_get_window_attributes_cookie_t attr_cookie; | |
898 | xcb_get_geometry_reply_t *geom_reply; | |
899 | xcb_get_window_attributes_reply_t *attr_reply; | |
900 | ||
901 | geom_cookie = xcb_get_geometry(HostX.conn, a_window); | |
902 | attr_cookie = xcb_get_window_attributes(HostX.conn, a_window); | |
903 | geom_reply = xcb_get_geometry_reply(HostX.conn, geom_cookie, NULL); | |
904 | attr_reply = xcb_get_window_attributes_reply(HostX.conn, attr_cookie, NULL); | |
905 | ||
906 | a_attrs->x = geom_reply->x; | |
907 | a_attrs->y = geom_reply->y; | |
908 | a_attrs->width = geom_reply->width; | |
909 | a_attrs->height = geom_reply->height; | |
910 | a_attrs->visualid = attr_reply->visual; | |
911 | ||
912 | free(geom_reply); | |
913 | free(attr_reply); | |
914 | return TRUE; | |
915 | } | |
916 | ||
917 | int | |
918 | hostx_get_visuals_info(EphyrHostVisualInfo ** a_visuals, int *a_num_entries) | |
919 | { | |
920 | Bool is_ok = FALSE; | |
921 | EphyrHostVisualInfo *host_visuals = NULL; | |
922 | int nb_items = 0, i = 0, screen_num; | |
923 | xcb_screen_iterator_t screens; | |
924 | xcb_depth_iterator_t depths; | |
925 | ||
926 | EPHYR_RETURN_VAL_IF_FAIL(a_visuals && a_num_entries, FALSE); | |
927 | EPHYR_LOG("enter\n"); | |
928 | ||
929 | screens = xcb_setup_roots_iterator(xcb_get_setup(HostX.conn)); | |
930 | for (screen_num = 0; screens.rem; screen_num++, xcb_screen_next(&screens)) { | |
931 | depths = xcb_screen_allowed_depths_iterator(screens.data); | |
932 | for (; depths.rem; xcb_depth_next(&depths)) { | |
933 | xcb_visualtype_t *visuals = xcb_depth_visuals(depths.data); | |
934 | EphyrHostVisualInfo *tmp_visuals = | |
935 | realloc(host_visuals, | |
936 | (nb_items + depths.data->visuals_len) | |
937 | * sizeof(EphyrHostVisualInfo)); | |
938 | if (!tmp_visuals) { | |
939 | goto out; | |
940 | } | |
941 | host_visuals = tmp_visuals; | |
942 | for (i = 0; i < depths.data->visuals_len; i++) { | |
943 | host_visuals[nb_items + i].visualid = visuals[i].visual_id; | |
944 | host_visuals[nb_items + i].screen = screen_num; | |
945 | host_visuals[nb_items + i].depth = depths.data->depth; | |
946 | host_visuals[nb_items + i].class = visuals[i]._class; | |
947 | host_visuals[nb_items + i].red_mask = visuals[i].red_mask; | |
948 | host_visuals[nb_items + i].green_mask = visuals[i].green_mask; | |
949 | host_visuals[nb_items + i].blue_mask = visuals[i].blue_mask; | |
950 | host_visuals[nb_items + i].colormap_size = visuals[i].colormap_entries; | |
951 | host_visuals[nb_items + i].bits_per_rgb = visuals[i].bits_per_rgb_value; | |
952 | } | |
953 | nb_items += depths.data->visuals_len; | |
954 | } | |
955 | } | |
956 | ||
957 | EPHYR_LOG("host advertises %d visuals\n", nb_items); | |
958 | *a_visuals = host_visuals; | |
959 | *a_num_entries = nb_items; | |
960 | host_visuals = NULL; | |
961 | ||
962 | is_ok = TRUE; | |
963 | out: | |
964 | free(host_visuals); | |
965 | host_visuals = NULL; | |
966 | EPHYR_LOG("leave\n"); | |
967 | return is_ok; | |
968 | ||
969 | } | |
970 | ||
971 | int | |
972 | hostx_create_window(int a_screen_number, | |
973 | EphyrBox * a_geometry, | |
974 | int a_visual_id, int *a_host_peer /*out parameter */ ) | |
975 | { | |
976 | Bool is_ok = FALSE; | |
977 | xcb_window_t win; | |
978 | int winmask = 0; | |
979 | uint32_t attrs[2]; | |
980 | xcb_screen_t *screen = xcb_aux_get_screen(HostX.conn, hostx_get_screen()); | |
981 | xcb_visualtype_t *visual; | |
982 | int depth = 0; | |
983 | EphyrScrPriv *scrpriv = HostX.screens[a_screen_number]->driver; | |
984 | ||
985 | EPHYR_RETURN_VAL_IF_FAIL(screen && a_geometry, FALSE); | |
986 | ||
987 | EPHYR_LOG("enter\n"); | |
988 | ||
989 | visual = xcb_aux_find_visual_by_id(screen, a_visual_id); | |
990 | if (!visual) { | |
991 | EPHYR_LOG_ERROR ("argh, could not find a remote visual with id:%d\n", | |
992 | a_visual_id); | |
993 | goto out; | |
994 | } | |
995 | depth = xcb_aux_get_depth_of_visual(screen, a_visual_id); | |
996 | ||
997 | winmask = XCB_CW_EVENT_MASK | XCB_CW_COLORMAP; | |
998 | attrs[0] = XCB_EVENT_MASK_BUTTON_PRESS | |
999 | |XCB_EVENT_MASK_BUTTON_RELEASE | |
1000 | |XCB_EVENT_MASK_POINTER_MOTION | |
1001 | |XCB_EVENT_MASK_KEY_PRESS | |
1002 | |XCB_EVENT_MASK_KEY_RELEASE | |
1003 | |XCB_EVENT_MASK_EXPOSURE; | |
1004 | attrs[1] = xcb_generate_id(HostX.conn); | |
1005 | xcb_create_colormap(HostX.conn, | |
1006 | XCB_COLORMAP_ALLOC_NONE, | |
1007 | attrs[1], | |
1008 | hostx_get_window(a_screen_number), | |
1009 | a_visual_id); | |
1010 | ||
1011 | win = xcb_generate_id(HostX.conn); | |
1012 | xcb_create_window(HostX.conn, | |
1013 | depth, | |
1014 | win, | |
1015 | hostx_get_window (a_screen_number), | |
1016 | a_geometry->x, a_geometry->y, | |
1017 | a_geometry->width, a_geometry->height, 0, | |
1018 | XCB_WINDOW_CLASS_COPY_FROM_PARENT, | |
1019 | a_visual_id, winmask, attrs); | |
1020 | ||
1021 | if (scrpriv->peer_win == XCB_NONE) { | |
1022 | scrpriv->peer_win = win; | |
1023 | } | |
1024 | else { | |
1025 | EPHYR_LOG_ERROR("multiple peer windows created for same screen\n"); | |
1026 | } | |
1027 | xcb_flush(HostX.conn); | |
1028 | xcb_map_window(HostX.conn, win); | |
1029 | *a_host_peer = win; | |
1030 | is_ok = TRUE; | |
1031 | out: | |
1032 | EPHYR_LOG("leave\n"); | |
1033 | return is_ok; | |
1034 | } | |
1035 | ||
1036 | int | |
1037 | hostx_destroy_window(int a_win) | |
1038 | { | |
1039 | xcb_destroy_window(HostX.conn, a_win); | |
1040 | xcb_flush(HostX.conn); | |
1041 | return TRUE; | |
1042 | } | |
1043 | ||
1044 | int | |
1045 | hostx_set_window_geometry(int a_win, EphyrBox * a_geo) | |
1046 | { | |
1047 | uint32_t mask = XCB_CONFIG_WINDOW_X | |
1048 | | XCB_CONFIG_WINDOW_Y | |
1049 | | XCB_CONFIG_WINDOW_WIDTH | |
1050 | | XCB_CONFIG_WINDOW_HEIGHT; | |
1051 | uint32_t values[4]; | |
1052 | ||
1053 | EPHYR_RETURN_VAL_IF_FAIL(a_geo, FALSE); | |
1054 | ||
1055 | EPHYR_LOG("enter. x,y,w,h:(%d,%d,%d,%d)\n", | |
1056 | a_geo->x, a_geo->y, a_geo->width, a_geo->height); | |
1057 | ||
1058 | values[0] = a_geo->x; | |
1059 | values[1] = a_geo->y; | |
1060 | values[2] = a_geo->width; | |
1061 | values[3] = a_geo->height; | |
1062 | xcb_configure_window(HostX.conn, a_win, mask, values); | |
1063 | ||
1064 | EPHYR_LOG("leave\n"); | |
1065 | return TRUE; | |
1066 | } | |
1067 | ||
1068 | int | |
1069 | hostx_set_window_bounding_rectangles(int a_window, | |
1070 | EphyrRect * a_rects, int a_num_rects) | |
1071 | { | |
1072 | Bool is_ok = FALSE; | |
1073 | int i = 0; | |
1074 | xcb_rectangle_t *rects = NULL; | |
1075 | ||
1076 | EPHYR_RETURN_VAL_IF_FAIL(a_rects, FALSE); | |
1077 | ||
1078 | EPHYR_LOG("enter. num rects:%d\n", a_num_rects); | |
1079 | ||
1080 | rects = calloc(a_num_rects, sizeof (xcb_rectangle_t)); | |
1081 | if (!rects) | |
1082 | goto out; | |
1083 | for (i = 0; i < a_num_rects; i++) { | |
1084 | rects[i].x = a_rects[i].x1; | |
1085 | rects[i].y = a_rects[i].y1; | |
1086 | rects[i].width = abs(a_rects[i].x2 - a_rects[i].x1); | |
1087 | rects[i].height = abs(a_rects[i].y2 - a_rects[i].y1); | |
1088 | EPHYR_LOG("borders clipped to rect[x:%d,y:%d,w:%d,h:%d]\n", | |
1089 | rects[i].x, rects[i].y, rects[i].width, rects[i].height); | |
1090 | } | |
1091 | xcb_shape_rectangles(HostX.conn, | |
1092 | XCB_SHAPE_SO_SET, | |
1093 | XCB_SHAPE_SK_BOUNDING, | |
1094 | XCB_CLIP_ORDERING_YX_BANDED, | |
1095 | a_window, | |
1096 | 0, 0, | |
1097 | a_num_rects, | |
1098 | rects); | |
1099 | is_ok = TRUE; | |
1100 | ||
1101 | out: | |
1102 | free(rects); | |
1103 | rects = NULL; | |
1104 | EPHYR_LOG("leave\n"); | |
1105 | return is_ok; | |
1106 | } | |
1107 | ||
1108 | #ifdef XF86DRI | |
1109 | typedef struct { | |
1110 | int is_valid; | |
1111 | int local_id; | |
1112 | int remote_id; | |
1113 | } ResourcePair; | |
1114 | ||
1115 | #define RESOURCE_PEERS_SIZE 1024*10 | |
1116 | static ResourcePair resource_peers[RESOURCE_PEERS_SIZE]; | |
1117 | ||
1118 | int | |
1119 | hostx_allocate_resource_id_peer(int a_local_resource_id, | |
1120 | int *a_remote_resource_id) | |
1121 | { | |
1122 | int i = 0; | |
1123 | ResourcePair *peer = NULL; | |
1124 | ||
1125 | /* | |
1126 | * first make sure a resource peer | |
1127 | * does not exist already for | |
1128 | * a_local_resource_id | |
1129 | */ | |
1130 | for (i = 0; i < RESOURCE_PEERS_SIZE; i++) { | |
1131 | if (resource_peers[i].is_valid | |
1132 | && resource_peers[i].local_id == a_local_resource_id) { | |
1133 | peer = &resource_peers[i]; | |
1134 | break; | |
1135 | } | |
1136 | } | |
1137 | /* | |
1138 | * find one free peer entry, an feed it with | |
1139 | */ | |
1140 | if (!peer) { | |
1141 | for (i = 0; i < RESOURCE_PEERS_SIZE; i++) { | |
1142 | if (!resource_peers[i].is_valid) { | |
1143 | peer = &resource_peers[i]; | |
1144 | break; | |
1145 | } | |
1146 | } | |
1147 | if (peer) { | |
1148 | peer->remote_id = xcb_generate_id(HostX.conn); | |
1149 | peer->local_id = a_local_resource_id; | |
1150 | peer->is_valid = TRUE; | |
1151 | } | |
1152 | } | |
1153 | if (peer) { | |
1154 | *a_remote_resource_id = peer->remote_id; | |
1155 | return TRUE; | |
1156 | } | |
1157 | return FALSE; | |
1158 | } | |
1159 | ||
1160 | int | |
1161 | hostx_get_resource_id_peer(int a_local_resource_id, int *a_remote_resource_id) | |
1162 | { | |
1163 | int i = 0; | |
1164 | ResourcePair *peer = NULL; | |
1165 | ||
1166 | for (i = 0; i < RESOURCE_PEERS_SIZE; i++) { | |
1167 | if (resource_peers[i].is_valid | |
1168 | && resource_peers[i].local_id == a_local_resource_id) { | |
1169 | peer = &resource_peers[i]; | |
1170 | break; | |
1171 | } | |
1172 | } | |
1173 | if (peer) { | |
1174 | *a_remote_resource_id = peer->remote_id; | |
1175 | return TRUE; | |
1176 | } | |
1177 | return FALSE; | |
1178 | } | |
1179 | ||
1180 | #endif /* XF86DRI */ |