Bug Summary

File:hw/kdrive/ephyr/hostx.c
Location:line 935, column 27
Description:Access to field 'stride' results in a dereference of a null pointer (loaded from field 'ximg')

Annotated Source Code

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_H1
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(*__error()).h>
38#include <time.h>
39#include <err.h>
40
41#include <sys/ipc.h>
42#include <sys/shm.h>
43#include <sys/time.h>
44
45#include <X11/keysym.h>
46#include <xcb/xcb.h>
47#include <xcb/xproto.h>
48#include <xcb/xcb_icccm.h>
49#include <xcb/xcb_aux.h>
50#include <xcb/shm.h>
51#include <xcb/xcb_image.h>
52#include <xcb/shape.h>
53#include <xcb/xcb_keysyms.h>
54#include <xcb/randr.h>
55#ifdef XF86DRI
56#include <xcb/xf86dri.h>
57#include <xcb/glx.h>
58#endif /* XF86DRI */
59#ifdef GLAMOR
60#include <epoxy/gl.h>
61#include "glamor.h"
62#include "ephyr_glamor_glx.h"
63#endif
64#include "ephyrlog.h"
65#include "ephyr.h"
66
67struct EphyrHostXVars {
68 char *server_dpy_name;
69 xcb_connection_t *conn;
70 int screen;
71 xcb_visualtype_t *visual;
72 Window winroot;
73 xcb_gcontext_t gc;
74 xcb_render_pictformat_t argb_format;
75 xcb_cursor_t empty_cursor;
76 int depth;
77 Bool use_sw_cursor;
78 Bool use_fullscreen;
79 Bool have_shm;
80
81 int n_screens;
82 KdScreenInfo **screens;
83
84 long damage_debug_msec;
85};
86
87/* memset ( missing> ) instead of below */
88/*static EphyrHostXVars HostX = { "?", 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};*/
89static EphyrHostXVars HostX;
90
91static int HostXWantDamageDebug = 0;
92
93extern EphyrKeySyms ephyrKeySyms;
94
95extern Bool EphyrWantResize;
96
97char *ephyrResName = NULL((void*)0);
98int ephyrResNameFromCmd = 0;
99char *ephyrTitle = NULL((void*)0);
100Bool ephyr_glamor = FALSE0;
101
102Bool
103hostx_has_extension(xcb_extension_t *extension)
104{
105 const xcb_query_extension_reply_t *rep;
106
107 rep = xcb_get_extension_data(HostX.conn, extension);
108
109 return rep && rep->present;
110}
111
112static void
113 hostx_set_fullscreen_hint(void);
114
115#define host_depth_matches_server(_vars)(HostX.depth == (_vars)->server_depth) (HostX.depth == (_vars)->server_depth)
116
117int
118hostx_want_screen_geometry(KdScreenInfo *screen, int *width, int *height, int *x, int *y)
119{
120 EphyrScrPriv *scrpriv = screen->driver;
121
122 if (scrpriv && (scrpriv->win_pre_existing != None0L ||
123 scrpriv->output != NULL((void*)0) ||
124 HostX.use_fullscreen == TRUE1)) {
125 *x = scrpriv->win_x;
126 *y = scrpriv->win_y;
127 *width = scrpriv->win_width;
128 *height = scrpriv->win_height;
129 return 1;
130 }
131
132 return 0;
133}
134
135void
136hostx_add_screen(KdScreenInfo *screen, unsigned long win_id, int screen_num, Bool use_geometry, const char *output)
137{
138 EphyrScrPriv *scrpriv = screen->driver;
139 int index = HostX.n_screens;
140
141 HostX.n_screens += 1;
142 HostX.screens = reallocarrayxreallocarray(HostX.screens,
143 HostX.n_screens, sizeof(HostX.screens[0]));
144 HostX.screens[index] = screen;
145
146 scrpriv->screen = screen;
147 scrpriv->win_pre_existing = win_id;
148 scrpriv->win_explicit_position = use_geometry;
149 scrpriv->output = output;
150}
151
152void
153hostx_set_display_name(char *name)
154{
155 HostX.server_dpy_name = strdup(name);
156}
157
158void
159hostx_set_screen_number(KdScreenInfo *screen, int number)
160{
161 EphyrScrPriv *scrpriv = screen->driver;
162
163 if (scrpriv) {
164 scrpriv->mynum = number;
165 hostx_set_win_title(screen, "");
166 }
167}
168
169void
170hostx_set_win_title(KdScreenInfo *screen, const char *extra_text)
171{
172 EphyrScrPriv *scrpriv = screen->driver;
173
174 if (!scrpriv)
175 return;
176
177 if (ephyrTitle) {
178 xcb_icccm_set_wm_name(HostX.conn,
179 scrpriv->win,
180 XCB_ATOM_STRING,
181 8,
182 strlen(ephyrTitle),
183 ephyrTitle);
184 } else {
185#define BUF_LEN256 256
186 char buf[BUF_LEN256 + 1];
187
188 memset(buf, 0, BUF_LEN + 1)__builtin___memset_chk (buf, 0, 256 + 1, __builtin_object_size
(buf, 0))
;
189 snprintf(buf, BUF_LEN, "Xephyr on %s.%d %s",__builtin___snprintf_chk (buf, 256, 0, __builtin_object_size (
buf, 2 > 1 ? 1 : 0), "Xephyr on %s.%d %s", HostX.server_dpy_name
? HostX.server_dpy_name : ":0", scrpriv->mynum, (extra_text
!= ((void*)0)) ? extra_text : "")
190 HostX.server_dpy_name ? HostX.server_dpy_name : ":0",__builtin___snprintf_chk (buf, 256, 0, __builtin_object_size (
buf, 2 > 1 ? 1 : 0), "Xephyr on %s.%d %s", HostX.server_dpy_name
? HostX.server_dpy_name : ":0", scrpriv->mynum, (extra_text
!= ((void*)0)) ? extra_text : "")
191 scrpriv->mynum, (extra_text != NULL) ? extra_text : "")__builtin___snprintf_chk (buf, 256, 0, __builtin_object_size (
buf, 2 > 1 ? 1 : 0), "Xephyr on %s.%d %s", HostX.server_dpy_name
? HostX.server_dpy_name : ":0", scrpriv->mynum, (extra_text
!= ((void*)0)) ? extra_text : "")
;
192
193 xcb_icccm_set_wm_name(HostX.conn,
194 scrpriv->win,
195 XCB_ATOM_STRING,
196 8,
197 strlen(buf),
198 buf);
199 xcb_flush(HostX.conn);
200 }
201}
202
203int
204hostx_want_host_cursor(void)
205{
206 return !HostX.use_sw_cursor;
207}
208
209void
210hostx_use_sw_cursor(void)
211{
212 HostX.use_sw_cursor = TRUE1;
213}
214
215xcb_cursor_t
216hostx_get_empty_cursor(void)
217{
218 return HostX.empty_cursor;
219}
220
221int
222hostx_want_preexisting_window(KdScreenInfo *screen)
223{
224 EphyrScrPriv *scrpriv = screen->driver;
225
226 if (scrpriv && scrpriv->win_pre_existing) {
227 return 1;
228 }
229 else {
230 return 0;
231 }
232}
233
234void
235hostx_get_output_geometry(const char *output,
236 int *x, int *y,
237 int *width, int *height)
238{
239 int i, name_len = 0, output_found = FALSE0;
240 char *name = NULL((void*)0);
241 xcb_generic_error_t *error;
242 xcb_randr_query_version_cookie_t version_c;
243 xcb_randr_query_version_reply_t *version_r;
244 xcb_randr_get_screen_resources_cookie_t screen_resources_c;
245 xcb_randr_get_screen_resources_reply_t *screen_resources_r;
246 xcb_randr_output_t *randr_outputs;
247 xcb_randr_get_output_info_cookie_t output_info_c;
248 xcb_randr_get_output_info_reply_t *output_info_r;
249 xcb_randr_get_crtc_info_cookie_t crtc_info_c;
250 xcb_randr_get_crtc_info_reply_t *crtc_info_r;
251
252 /* First of all, check for extension */
253 if (!hostx_has_extension(&xcb_randr_id))
254 {
255 fprintf(stderr__stderrp, "\nHost X server does not support RANDR extension (or it's disabled).\n");
256 exit(1);
257 }
258
259 /* Check RandR version */
260 version_c = xcb_randr_query_version(HostX.conn, 1, 2);
261 version_r = xcb_randr_query_version_reply(HostX.conn,
262 version_c,
263 &error);
264
265 if (error != NULL((void*)0) || version_r == NULL((void*)0))
266 {
267 fprintf(stderr__stderrp, "\nFailed to get RandR version supported by host X server.\n");
268 exit(1);
269 }
270 else if (version_r->major_version < 1 || version_r->minor_version < 2)
271 {
272 free(version_r);
273 fprintf(stderr__stderrp, "\nHost X server doesn't support RandR 1.2, needed for -output usage.\n");
274 exit(1);
275 }
276
277 free(version_r);
278
279 /* Get list of outputs from screen resources */
280 screen_resources_c = xcb_randr_get_screen_resources(HostX.conn,
281 HostX.winroot);
282 screen_resources_r = xcb_randr_get_screen_resources_reply(HostX.conn,
283 screen_resources_c,
284 NULL((void*)0));
285 randr_outputs = xcb_randr_get_screen_resources_outputs(screen_resources_r);
286
287 for (i = 0; !output_found && i < screen_resources_r->num_outputs; i++)
288 {
289 /* Get info on the output */
290 output_info_c = xcb_randr_get_output_info(HostX.conn,
291 randr_outputs[i],
292 XCB_CURRENT_TIME0L);
293 output_info_r = xcb_randr_get_output_info_reply(HostX.conn,
294 output_info_c,
295 NULL((void*)0));
296
297 /* Get output name */
298 name_len = xcb_randr_get_output_info_name_length(output_info_r);
299 name = malloc(name_len + 1);
300 strncpy(name, (char*)xcb_randr_get_output_info_name(output_info_r), name_len)__builtin___strncpy_chk (name, (char*)xcb_randr_get_output_info_name
(output_info_r), name_len, __builtin_object_size (name, 2 >
1 ? 1 : 0))
;
301 name[name_len] = '\0';
302
303 if (!strcmp(name, output))
304 {
305 output_found = TRUE1;
306
307 /* Check if output is connected */
308 if (output_info_r->crtc == XCB_NONE0L)
309 {
310 free(name);
311 free(output_info_r);
312 free(screen_resources_r);
313 fprintf(stderr__stderrp, "\nOutput %s is currently disabled (or not connected).\n", output);
314 exit(1);
315 }
316
317 /* Get CRTC from output info */
318 crtc_info_c = xcb_randr_get_crtc_info(HostX.conn,
319 output_info_r->crtc,
320 XCB_CURRENT_TIME0L);
321 crtc_info_r = xcb_randr_get_crtc_info_reply(HostX.conn,
322 crtc_info_c,
323 NULL((void*)0));
324
325 /* Get CRTC geometry */
326 *x = crtc_info_r->x;
327 *y = crtc_info_r->y;
328 *width = crtc_info_r->width;
329 *height = crtc_info_r->height;
330
331 free(crtc_info_r);
332 }
333
334 free(name);
335 free(output_info_r);
336 }
337
338 free(screen_resources_r);
339
340 if (!output_found)
341 {
342 fprintf(stderr__stderrp, "\nOutput %s not available in host X server.\n", output);
343 exit(1);
344 }
345}
346
347void
348hostx_use_fullscreen(void)
349{
350 HostX.use_fullscreen = TRUE1;
351}
352
353int
354hostx_want_fullscreen(void)
355{
356 return HostX.use_fullscreen;
357}
358
359static xcb_intern_atom_cookie_t cookie_WINDOW_STATE,
360 cookie_WINDOW_STATE_FULLSCREEN;
361
362static void
363hostx_set_fullscreen_hint(void)
364{
365 xcb_atom_t atom_WINDOW_STATE, atom_WINDOW_STATE_FULLSCREEN;
366 int index;
367 xcb_intern_atom_reply_t *reply;
368
369 reply = xcb_intern_atom_reply(HostX.conn, cookie_WINDOW_STATE, NULL((void*)0));
370 atom_WINDOW_STATE = reply->atom;
371 free(reply);
372
373 reply = xcb_intern_atom_reply(HostX.conn, cookie_WINDOW_STATE_FULLSCREEN,
374 NULL((void*)0));
375 atom_WINDOW_STATE_FULLSCREEN = reply->atom;
376 free(reply);
377
378 for (index = 0; index < HostX.n_screens; index++) {
379 EphyrScrPriv *scrpriv = HostX.screens[index]->driver;
380 xcb_change_property(HostX.conn,
381 PropModeReplace0,
382 scrpriv->win,
383 atom_WINDOW_STATE,
384 XCB_ATOM_ATOM,
385 32,
386 1,
387 &atom_WINDOW_STATE_FULLSCREEN);
388 }
389}
390
391static void
392hostx_toggle_damage_debug(void)
393{
394 HostXWantDamageDebug ^= 1;
395}
396
397void
398hostx_handle_signal(int signum)
399{
400 hostx_toggle_damage_debug();
401 EPHYR_DBG("Signal caught. Damage Debug:%i\n", HostXWantDamageDebug)do {} while (0);
402}
403
404void
405hostx_use_resname(char *name, int fromcmd)
406{
407 ephyrResName = name;
408 ephyrResNameFromCmd = fromcmd;
409}
410
411void
412hostx_set_title(char *title)
413{
414 ephyrTitle = title;
415}
416
417#ifdef __SUNPRO_C
418/* prevent "Function has no return statement" error for x_io_error_handler */
419#pragma does_not_return(exit)
420#endif
421
422int
423hostx_init(void)
424{
425 uint32_t attrs[2];
426 uint32_t attr_mask = 0;
427 xcb_pixmap_t cursor_pxm;
428 xcb_gcontext_t cursor_gc;
429 uint16_t red, green, blue;
430 uint32_t pixel;
431 int index;
432 char *tmpstr;
433 char *class_hint;
434 size_t class_len;
435 xcb_screen_t *xscreen;
436 xcb_rectangle_t rect = { 0, 0, 1, 1 };
437
438 attrs[0] =
439 XCB_EVENT_MASK_BUTTON_PRESS
440 | XCB_EVENT_MASK_BUTTON_RELEASE
441 | XCB_EVENT_MASK_POINTER_MOTION
442 | XCB_EVENT_MASK_KEY_PRESS
443 | XCB_EVENT_MASK_KEY_RELEASE
444 | XCB_EVENT_MASK_EXPOSURE
445 | XCB_EVENT_MASK_STRUCTURE_NOTIFY;
446 attr_mask |= XCB_CW_EVENT_MASK;
447
448 EPHYR_DBG("mark")do {} while (0);
449#ifdef GLAMOR
450 if (ephyr_glamor)
451 HostX.conn = ephyr_glamor_connect();
452 else
453#endif
454 HostX.conn = xcb_connect(NULL((void*)0), &HostX.screen);
455 if (!HostX.conn || xcb_connection_has_error(HostX.conn)) {
456 fprintf(stderr__stderrp, "\nXephyr cannot open host display. Is DISPLAY set?\n");
457 exit(1);
458 }
459
460 xscreen = xcb_aux_get_screen(HostX.conn, HostX.screen);
461 HostX.winroot = xscreen->root;
462 HostX.gc = xcb_generate_id(HostX.conn);
463 HostX.depth = xscreen->root_depth;
464#ifdef GLAMOR
465 if (ephyr_glamor) {
466 HostX.visual = ephyr_glamor_get_visual();
467 if (HostX.visual->visual_id != xscreen->root_visual) {
468 attrs[1] = xcb_generate_id(HostX.conn);
469 attr_mask |= XCB_CW_COLORMAP;
470 xcb_create_colormap(HostX.conn,
471 XCB_COLORMAP_ALLOC_NONE,
472 attrs[1],
473 HostX.winroot,
474 HostX.visual->visual_id);
475 }
476 } else
477#endif
478 HostX.visual = xcb_aux_find_visual_by_id(xscreen,xscreen->root_visual);
479
480 xcb_create_gc(HostX.conn, HostX.gc, HostX.winroot, 0, NULL((void*)0));
481 cookie_WINDOW_STATE = xcb_intern_atom(HostX.conn, FALSE0,
482 strlen("_NET_WM_STATE"),
483 "_NET_WM_STATE");
484 cookie_WINDOW_STATE_FULLSCREEN =
485 xcb_intern_atom(HostX.conn, FALSE0,
486 strlen("_NET_WM_STATE_FULLSCREEN"),
487 "_NET_WM_STATE_FULLSCREEN");
488
489 for (index = 0; index < HostX.n_screens; index++) {
490 KdScreenInfo *screen = HostX.screens[index];
491 EphyrScrPriv *scrpriv = screen->driver;
492
493 scrpriv->win = xcb_generate_id(HostX.conn);
494 scrpriv->server_depth = HostX.depth;
495 scrpriv->ximg = NULL((void*)0);
496 scrpriv->win_x = 0;
497 scrpriv->win_y = 0;
498
499 if (scrpriv->win_pre_existing != XCB_WINDOW_NONE) {
500 xcb_get_geometry_reply_t *prewin_geom;
501 xcb_get_geometry_cookie_t cookie;
502 xcb_generic_error_t *e = NULL((void*)0);
503
504 /* Get screen size from existing window */
505 cookie = xcb_get_geometry(HostX.conn,
506 scrpriv->win_pre_existing);
507 prewin_geom = xcb_get_geometry_reply(HostX.conn, cookie, &e);
508
509 if (e) {
510 free(e);
511 free(prewin_geom);
512 fprintf (stderr__stderrp, "\nXephyr -parent window' does not exist!\n");
513 exit (1);
514 }
515
516 scrpriv->win_width = prewin_geom->width;
517 scrpriv->win_height = prewin_geom->height;
518
519 free(prewin_geom);
520
521 xcb_create_window(HostX.conn,
522 XCB_COPY_FROM_PARENT0L,
523 scrpriv->win,
524 scrpriv->win_pre_existing,
525 0,0,
526 scrpriv->win_width,
527 scrpriv->win_height,
528 0,
529 XCB_WINDOW_CLASS_COPY_FROM_PARENT,
530 HostX.visual->visual_id,
531 attr_mask,
532 attrs);
533 }
534 else {
535 xcb_create_window(HostX.conn,
536 XCB_COPY_FROM_PARENT0L,
537 scrpriv->win,
538 HostX.winroot,
539 0,0,100,100, /* will resize */
540 0,
541 XCB_WINDOW_CLASS_COPY_FROM_PARENT,
542 HostX.visual->visual_id,
543 attr_mask,
544 attrs);
545
546 hostx_set_win_title(screen,
547 "(ctrl+shift grabs mouse and keyboard)");
548
549 if (HostX.use_fullscreen) {
550 scrpriv->win_width = xscreen->width_in_pixels;
551 scrpriv->win_height = xscreen->height_in_pixels;
552
553 hostx_set_fullscreen_hint();
554 }
555 else if (scrpriv->output) {
556 hostx_get_output_geometry(scrpriv->output,
557 &scrpriv->win_x,
558 &scrpriv->win_y,
559 &scrpriv->win_width,
560 &scrpriv->win_height);
561
562 HostX.use_fullscreen = TRUE1;
563 hostx_set_fullscreen_hint();
564 }
565
566
567 tmpstr = getenv("RESOURCE_NAME");
568 if (tmpstr && (!ephyrResNameFromCmd))
569 ephyrResName = tmpstr;
570 class_len = strlen(ephyrResName) + 1 + strlen("Xephyr") + 1;
571 class_hint = malloc(class_len);
572 if (class_hint) {
573 strcpy(class_hint, ephyrResName)__builtin___strcpy_chk (class_hint, ephyrResName, __builtin_object_size
(class_hint, 2 > 1 ? 1 : 0))
;
574 strcpy(class_hint + strlen(ephyrResName) + 1, "Xephyr")__builtin___strcpy_chk (class_hint + strlen(ephyrResName) + 1
, "Xephyr", __builtin_object_size (class_hint + strlen(ephyrResName
) + 1, 2 > 1 ? 1 : 0))
;
575 xcb_change_property(HostX.conn,
576 XCB_PROP_MODE_REPLACE,
577 scrpriv->win,
578 XCB_ATOM_WM_CLASS,
579 XCB_ATOM_STRING,
580 8,
581 class_len,
582 class_hint);
583 free(class_hint);
584 }
585 }
586 }
587
588 if (!xcb_aux_parse_color("red", &red, &green, &blue)) {
589 xcb_lookup_color_cookie_t c =
590 xcb_lookup_color(HostX.conn, xscreen->default_colormap, 3, "red");
591 xcb_lookup_color_reply_t *reply =
592 xcb_lookup_color_reply(HostX.conn, c, NULL((void*)0));
593 red = reply->exact_red;
594 green = reply->exact_green;
595 blue = reply->exact_blue;
596 free(reply);
597 }
598
599 {
600 xcb_alloc_color_cookie_t c = xcb_alloc_color(HostX.conn,
601 xscreen->default_colormap,
602 red, green, blue);
603 xcb_alloc_color_reply_t *r = xcb_alloc_color_reply(HostX.conn, c, NULL((void*)0));
604 red = r->red;
605 green = r->green;
606 blue = r->blue;
607 pixel = r->pixel;
608 free(r);
609 }
610
611 xcb_change_gc(HostX.conn, HostX.gc, XCB_GC_FOREGROUND, &pixel);
612
613 cursor_pxm = xcb_generate_id(HostX.conn);
614 xcb_create_pixmap(HostX.conn, 1, cursor_pxm, HostX.winroot, 1, 1);
615 cursor_gc = xcb_generate_id(HostX.conn);
616 pixel = 0;
617 xcb_create_gc(HostX.conn, cursor_gc, cursor_pxm,
618 XCB_GC_FOREGROUND, &pixel);
619 xcb_poly_fill_rectangle(HostX.conn, cursor_pxm, cursor_gc, 1, &rect);
620 xcb_free_gc(HostX.conn, cursor_gc);
621 HostX.empty_cursor = xcb_generate_id(HostX.conn);
622 xcb_create_cursor(HostX.conn,
623 HostX.empty_cursor,
624 cursor_pxm, cursor_pxm,
625 0,0,0,
626 0,0,0,
627 1,1);
628 xcb_free_pixmap(HostX.conn, cursor_pxm);
629 if (!hostx_want_host_cursor ()) {
630 CursorVisible = TRUE1;
631 /* Ditch the cursor, we provide our 'own' */
632 for (index = 0; index < HostX.n_screens; index++) {
633 KdScreenInfo *screen = HostX.screens[index];
634 EphyrScrPriv *scrpriv = screen->driver;
635
636 xcb_change_window_attributes(HostX.conn,
637 scrpriv->win,
638 XCB_CW_CURSOR,
639 &HostX.empty_cursor);
640 }
641 }
642
643 /* Try to get share memory ximages for a little bit more speed */
644 if (!hostx_has_extension(&xcb_shm_id) || getenv("XEPHYR_NO_SHM")) {
645 fprintf(stderr__stderrp, "\nXephyr unable to use SHM XImages\n");
646 HostX.have_shm = FALSE0;
647 }
648 else {
649 /* Really really check we have shm - better way ?*/
650 xcb_shm_segment_info_t shminfo;
651 xcb_generic_error_t *e;
652 xcb_void_cookie_t cookie;
653 xcb_shm_seg_t shmseg;
654
655 HostX.have_shm = TRUE1;
656
657 shminfo.shmid = shmget(IPC_PRIVATE((key_t)0), 1, IPC_CREAT001000|0777);
658 shminfo.shmaddr = shmat(shminfo.shmid,0,0);
659
660 shmseg = xcb_generate_id(HostX.conn);
661 cookie = xcb_shm_attach_checked(HostX.conn, shmseg, shminfo.shmid,
662 TRUE1);
663 e = xcb_request_check(HostX.conn, cookie);
664
665 if (e) {
666 fprintf(stderr__stderrp, "\nXephyr unable to use SHM XImages\n");
667 HostX.have_shm = FALSE0;
668 free(e);
669 }
670
671 shmdt(shminfo.shmaddr);
672 shmctl(shminfo.shmid, IPC_RMID0, 0);
673 }
674
675 xcb_flush(HostX.conn);
676
677 /* Setup the pause time between paints when debugging updates */
678
679 HostX.damage_debug_msec = 20000; /* 1/50 th of a second */
680
681 if (getenv("XEPHYR_PAUSE")) {
682 HostX.damage_debug_msec = strtol(getenv("XEPHYR_PAUSE"), NULL((void*)0), 0);
683 EPHYR_DBG("pause is %li\n", HostX.damage_debug_msec)do {} while (0);
684 }
685
686 return 1;
687}
688
689int
690hostx_get_depth(void)
691{
692 return HostX.depth;
693}
694
695int
696hostx_get_server_depth(KdScreenInfo *screen)
697{
698 EphyrScrPriv *scrpriv = screen->driver;
699
700 return scrpriv ? scrpriv->server_depth : 0;
701}
702
703int
704hostx_get_bpp(KdScreenInfo *screen)
705{
706 EphyrScrPriv *scrpriv = screen->driver;
707
708 if (!scrpriv)
709 return 0;
710
711 if (host_depth_matches_server(scrpriv)(HostX.depth == (scrpriv)->server_depth))
712 return HostX.visual->bits_per_rgb_value;
713 else
714 return scrpriv->server_depth; /*XXX correct ?*/
715}
716
717void
718hostx_get_visual_masks(KdScreenInfo *screen,
719 CARD32 *rmsk, CARD32 *gmsk, CARD32 *bmsk)
720{
721 EphyrScrPriv *scrpriv = screen->driver;
722
723 if (!scrpriv)
724 return;
725
726 if (host_depth_matches_server(scrpriv)(HostX.depth == (scrpriv)->server_depth)) {
727 *rmsk = HostX.visual->red_mask;
728 *gmsk = HostX.visual->green_mask;
729 *bmsk = HostX.visual->blue_mask;
730 }
731 else if (scrpriv->server_depth == 16) {
732 /* Assume 16bpp 565 */
733 *rmsk = 0xf800;
734 *gmsk = 0x07e0;
735 *bmsk = 0x001f;
736 }
737 else {
738 *rmsk = 0x0;
739 *gmsk = 0x0;
740 *bmsk = 0x0;
741 }
742}
743
744static int
745hostx_calculate_color_shift(unsigned long mask)
746{
747 int shift = 1;
748
749 /* count # of bits in mask */
750 while ((mask = (mask >> 1)))
751 shift++;
752 /* cmap entry is an unsigned char so adjust it by size of that */
753 shift = shift - sizeof(unsigned char) * 8;
754 if (shift < 0)
755 shift = 0;
756 return shift;
757}
758
759void
760hostx_set_cmap_entry(ScreenPtr pScreen, unsigned char idx,
761 unsigned char r, unsigned char g, unsigned char b)
762{
763 KdScreenPriv(pScreen)KdPrivScreenPtr pScreenPriv = ((KdPrivScreenPtr) dixLookupPrivate
(&(pScreen)->devPrivates, (&kdScreenPrivateKeyRec)
))
;
764 KdScreenInfo *screen = pScreenPriv->screen;
765 EphyrScrPriv *scrpriv = screen->driver;
766/* need to calculate the shifts for RGB because server could be BGR. */
767/* XXX Not sure if this is correct for 8 on 16, but this works for 8 on 24.*/
768 static int rshift, bshift, gshift = 0;
769 static int first_time = 1;
770
771 if (first_time) {
772 first_time = 0;
773 rshift = hostx_calculate_color_shift(HostX.visual->red_mask);
774 gshift = hostx_calculate_color_shift(HostX.visual->green_mask);
775 bshift = hostx_calculate_color_shift(HostX.visual->blue_mask);
776 }
777 scrpriv->cmap[idx] = ((r << rshift) & HostX.visual->red_mask) |
778 ((g << gshift) & HostX.visual->green_mask) |
779 ((b << bshift) & HostX.visual->blue_mask);
780}
781
782/**
783 * hostx_screen_init creates the XImage that will contain the front buffer of
784 * the ephyr screen, and possibly offscreen memory.
785 *
786 * @param width width of the screen
787 * @param height height of the screen
788 * @param buffer_height height of the rectangle to be allocated.
789 *
790 * hostx_screen_init() creates an XImage, using MIT-SHM if it's available.
791 * buffer_height can be used to create a larger offscreen buffer, which is used
792 * by fakexa for storing offscreen pixmap data.
793 */
794void *
795hostx_screen_init(KdScreenInfo *screen,
796 int x, int y,
797 int width, int height, int buffer_height,
798 int *bytes_per_line, int *bits_per_pixel)
799{
800 EphyrScrPriv *scrpriv = screen->driver;
801 Bool shm_success = FALSE0;
802
803 if (!scrpriv) {
1
Assuming 'scrpriv' is non-null
2
Taking false branch
804 fprintf(stderr__stderrp, "%s: Error in accessing hostx data\n", __func__);
805 exit(1);
806 }
807
808 EPHYR_DBG("host_screen=%p x=%d, y=%d, wxh=%dx%d, buffer_height=%d",do {} while (0)
809 screen, x, y, width, height, buffer_height)do {} while (0);
810
811 if (scrpriv->ximg != NULL((void*)0)) {
3
Assuming pointer value is null
4
Taking false branch
812 /* Free up the image data if previously used
813 * i.ie called by server reset
814 */
815
816 if (HostX.have_shm) {
817 xcb_shm_detach(HostX.conn, scrpriv->shminfo.shmseg);
818 xcb_image_destroy(scrpriv->ximg);
819 shmdt(scrpriv->shminfo.shmaddr);
820 shmctl(scrpriv->shminfo.shmid, IPC_RMID0, 0);
821 }
822 else {
823 free(scrpriv->ximg->data);
824 scrpriv->ximg->data = NULL((void*)0);
825
826 xcb_image_destroy(scrpriv->ximg);
827 }
828 }
829
830 if (!ephyr_glamor && HostX.have_shm) {
5
Assuming 'ephyr_glamor' is not equal to 0
831 scrpriv->ximg = xcb_image_create_native(HostX.conn,
832 width,
833 buffer_height,
834 XCB_IMAGE_FORMAT_Z_PIXMAP,
835 HostX.depth,
836 NULL((void*)0),
837 ~0,
838 NULL((void*)0));
839
840 scrpriv->shminfo.shmid =
841 shmget(IPC_PRIVATE((key_t)0),
842 scrpriv->ximg->stride * buffer_height,
843 IPC_CREAT001000 | 0777);
844 scrpriv->ximg->data = shmat(scrpriv->shminfo.shmid, 0, 0);
845 scrpriv->shminfo.shmaddr = scrpriv->ximg->data;
846
847 if (scrpriv->ximg->data == (uint8_t *) -1) {
848 EPHYR_DBGdo {} while (0)
849 ("Can't attach SHM Segment, falling back to plain XImages")do {} while (0);
850 HostX.have_shm = FALSE0;
851 xcb_image_destroy (scrpriv->ximg);
852 shmctl(scrpriv->shminfo.shmid, IPC_RMID0, 0);
853 }
854 else {
855 EPHYR_DBG("SHM segment attached %p", scrpriv->shminfo.shmaddr)do {} while (0);
856 scrpriv->shminfo.shmseg = xcb_generate_id(HostX.conn);
857 xcb_shm_attach(HostX.conn,
858 scrpriv->shminfo.shmseg,
859 scrpriv->shminfo.shmid,
860 FALSE0);
861 shm_success = TRUE1;
862 }
863 }
864
865 if (!ephyr_glamor && !shm_success) {
866 EPHYR_DBG("Creating image %dx%d for screen scrpriv=%p\n",do {} while (0)
867 width, buffer_height, scrpriv)do {} while (0);
868 scrpriv->ximg = xcb_image_create_native(HostX.conn,
869 width,
870 buffer_height,
871 XCB_IMAGE_FORMAT_Z_PIXMAP,
872 HostX.depth,
873 NULL((void*)0),
874 ~0,
875 NULL((void*)0));
876
877 /* Match server byte order so that the image can be converted to
878 * the native byte order by xcb_image_put() before drawing */
879 if (host_depth_matches_server(scrpriv)(HostX.depth == (scrpriv)->server_depth))
880 scrpriv->ximg->byte_order = IMAGE_BYTE_ORDER0;
881
882 scrpriv->ximg->data =
883 xallocarray(scrpriv->ximg->stride, buffer_height)xreallocarray(((void*)0), (scrpriv->ximg->stride), (buffer_height
))
;
884 }
885
886 {
887 uint32_t mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
888 uint32_t values[2] = {width, height};
889 xcb_configure_window(HostX.conn, scrpriv->win, mask, values);
890 }
891
892 if (scrpriv->win_pre_existing == None0L && !EphyrWantResize) {
893 /* Ask the WM to keep our size static */
894 xcb_size_hints_t size_hints = {0};
895 size_hints.max_width = size_hints.min_width = width;
896 size_hints.max_height = size_hints.min_height = height;
897 size_hints.flags = (XCB_ICCCM_SIZE_HINT_P_MIN_SIZE |
898 XCB_ICCCM_SIZE_HINT_P_MAX_SIZE);
899 xcb_icccm_set_wm_normal_hints(HostX.conn, scrpriv->win,
900 &size_hints);
901 }
902
903 xcb_map_window(HostX.conn, scrpriv->win);
904
905 /* Set explicit window position if it was informed in
906 * -screen option (WxH+X or WxH+X+Y). Otherwise, accept the
907 * position set by WM.
908 * The trick here is putting this code after xcb_map_window() call,
909 * so these values won't be overriden by WM. */
910 if (scrpriv->win_explicit_position)
6
Taking false branch
911 {
912 uint32_t mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y;
913 uint32_t values[2] = {x, y};
914 xcb_configure_window(HostX.conn, scrpriv->win, mask, values);
915 }
916
917
918 xcb_aux_sync(HostX.conn);
919
920 scrpriv->win_width = width;
921 scrpriv->win_height = height;
922 scrpriv->win_x = x;
923 scrpriv->win_y = y;
924
925#ifdef GLAMOR
926 if (ephyr_glamor) {
927 *bytes_per_line = 0;
928 *bits_per_pixel = 0;
929 ephyr_glamor_set_window_size(scrpriv->glamor,
930 scrpriv->win_width, scrpriv->win_height);
931 return NULL((void*)0);
932 } else
933#endif
934 if (host_depth_matches_server(scrpriv)(HostX.depth == (scrpriv)->server_depth)) {
7
Taking true branch
935 *bytes_per_line = scrpriv->ximg->stride;
8
Access to field 'stride' results in a dereference of a null pointer (loaded from field 'ximg')
936 *bits_per_pixel = scrpriv->ximg->bpp;
937
938 EPHYR_DBG("Host matches server")do {} while (0);
939 return scrpriv->ximg->data;
940 }
941 else {
942 int bytes_per_pixel = scrpriv->server_depth >> 3;
943 int stride = (width * bytes_per_pixel + 0x3) & ~0x3;
944
945 *bytes_per_line = stride;
946 *bits_per_pixel = scrpriv->server_depth;
947
948 EPHYR_DBG("server bpp %i", bytes_per_pixel)do {} while (0);
949 scrpriv->fb_data = xallocarray (stride, buffer_height)xreallocarray(((void*)0), (stride), (buffer_height));
950 return scrpriv->fb_data;
951 }
952}
953
954static void hostx_paint_debug_rect(KdScreenInfo *screen,
955 int x, int y, int width, int height);
956
957void
958hostx_paint_rect(KdScreenInfo *screen,
959 int sx, int sy, int dx, int dy, int width, int height)
960{
961 EphyrScrPriv *scrpriv = screen->driver;
962
963 EPHYR_DBG("painting in screen %d\n", scrpriv->mynum)do {} while (0);
964
965#ifdef GLAMOR
966 if (ephyr_glamor) {
967 BoxRec box;
968 RegionRec region;
969
970 box.x1 = dx;
971 box.y1 = dy;
972 box.x2 = dx + width;
973 box.y2 = dy + height;
974
975 RegionInit(&region, &box, 1);
976 ephyr_glamor_damage_redisplay(scrpriv->glamor, &region);
977 RegionUninit(&region);
978 return;
979 }
980#endif
981
982 /*
983 * Copy the image data updated by the shadow layer
984 * on to the window
985 */
986
987 if (HostXWantDamageDebug) {
988 hostx_paint_debug_rect(screen, dx, dy, width, height);
989 }
990
991 /*
992 * If the depth of the ephyr server is less than that of the host,
993 * the kdrive fb does not point to the ximage data but to a buffer
994 * ( fb_data ), we shift the various bits from this onto the XImage
995 * so they match the host.
996 *
997 * Note, This code is pretty new ( and simple ) so may break on
998 * endian issues, 32 bpp host etc.
999 * Not sure if 8bpp case is right either.
1000 * ... and it will be slower than the matching depth case.
1001 */
1002
1003 if (!host_depth_matches_server(scrpriv)(HostX.depth == (scrpriv)->server_depth)) {
1004 int x, y, idx, bytes_per_pixel = (scrpriv->server_depth >> 3);
1005 int stride = (scrpriv->win_width * bytes_per_pixel + 0x3) & ~0x3;
1006 unsigned char r, g, b;
1007 unsigned long host_pixel;
1008
1009 EPHYR_DBG("Unmatched host depth scrpriv=%p\n", scrpriv)do {} while (0);
1010 for (y = sy; y < sy + height; y++)
1011 for (x = sx; x < sx + width; x++) {
1012 idx = y * stride + x * bytes_per_pixel;
1013
1014 switch (scrpriv->server_depth) {
1015 case 16:
1016 {
1017 unsigned short pixel =
1018 *(unsigned short *) (scrpriv->fb_data + idx);
1019
1020 r = ((pixel & 0xf800) >> 8);
1021 g = ((pixel & 0x07e0) >> 3);
1022 b = ((pixel & 0x001f) << 3);
1023
1024 host_pixel = (r << 16) | (g << 8) | (b);
1025
1026 xcb_image_put_pixel(scrpriv->ximg, x, y, host_pixel);
1027 break;
1028 }
1029 case 8:
1030 {
1031 unsigned char pixel =
1032 *(unsigned char *) (scrpriv->fb_data + idx);
1033 xcb_image_put_pixel(scrpriv->ximg, x, y,
1034 scrpriv->cmap[pixel]);
1035 break;
1036 }
1037 default:
1038 break;
1039 }
1040 }
1041 }
1042
1043 if (HostX.have_shm) {
1044 xcb_image_shm_put(HostX.conn, scrpriv->win,
1045 HostX.gc, scrpriv->ximg,
1046 scrpriv->shminfo,
1047 sx, sy, dx, dy, width, height, FALSE0);
1048 }
1049 else {
1050 xcb_image_t *subimg = xcb_image_subimage(scrpriv->ximg, sx, sy,
1051 width, height, 0, 0, 0);
1052 xcb_image_t *img = xcb_image_native(HostX.conn, subimg, 1);
1053 xcb_image_put(HostX.conn, scrpriv->win, HostX.gc, img, dx, dy, 0);
1054 if (subimg != img)
1055 xcb_image_destroy(img);
1056 xcb_image_destroy(subimg);
1057 }
1058
1059 xcb_aux_sync(HostX.conn);
1060}
1061
1062static void
1063hostx_paint_debug_rect(KdScreenInfo *screen,
1064 int x, int y, int width, int height)
1065{
1066 EphyrScrPriv *scrpriv = screen->driver;
1067 struct timespec tspec;
1068 xcb_rectangle_t rect = { .x = x, .y = y, .width = width, .height = height };
1069 xcb_void_cookie_t cookie;
1070 xcb_generic_error_t *e;
1071
1072 tspec.tv_sec = HostX.damage_debug_msec / (1000000);
1073 tspec.tv_nsec = (HostX.damage_debug_msec % 1000000) * 1000;
1074
1075 EPHYR_DBG("msec: %li tv_sec %li, tv_msec %li",do {} while (0)
1076 HostX.damage_debug_msec, tspec.tv_sec, tspec.tv_nsec)do {} while (0);
1077
1078 /* fprintf(stderr, "Xephyr updating: %i+%i %ix%i\n", x, y, width, height); */
1079
1080 cookie = xcb_poly_fill_rectangle_checked(HostX.conn, scrpriv->win,
1081 HostX.gc, 1, &rect);
1082 e = xcb_request_check(HostX.conn, cookie);
1083 free(e);
1084
1085 /* nanosleep seems to work better than usleep for me... */
1086 nanosleep(&tspec, NULL((void*)0));
1087}
1088
1089void
1090hostx_load_keymap(void)
1091{
1092 int min_keycode, max_keycode;
1093
1094 min_keycode = xcb_get_setup(HostX.conn)->min_keycode;
1095 max_keycode = xcb_get_setup(HostX.conn)->max_keycode;
1096
1097 EPHYR_DBG("min: %d, max: %d", min_keycode, max_keycode)do {} while (0);
1098
1099 ephyrKeySyms.minKeyCode = min_keycode;
1100 ephyrKeySyms.maxKeyCode = max_keycode;
1101}
1102
1103xcb_connection_t *
1104hostx_get_xcbconn(void)
1105{
1106 return HostX.conn;
1107}
1108
1109int
1110hostx_get_screen(void)
1111{
1112 return HostX.screen;
1113}
1114
1115int
1116hostx_get_window(int a_screen_number)
1117{
1118 EphyrScrPriv *scrpriv;
1119 if (a_screen_number < 0 || a_screen_number >= HostX.n_screens) {
1120 EPHYR_LOG_ERROR("bad screen number:%d\n", a_screen_number);
1121 return 0;
1122 }
1123 scrpriv = HostX.screens[a_screen_number]->driver;
1124 return scrpriv->win;
1125}
1126
1127int
1128hostx_get_window_attributes(int a_window, EphyrHostWindowAttributes * a_attrs)
1129{
1130 xcb_get_geometry_cookie_t geom_cookie;
1131 xcb_get_window_attributes_cookie_t attr_cookie;
1132 xcb_get_geometry_reply_t *geom_reply;
1133 xcb_get_window_attributes_reply_t *attr_reply;
1134
1135 geom_cookie = xcb_get_geometry(HostX.conn, a_window);
1136 attr_cookie = xcb_get_window_attributes(HostX.conn, a_window);
1137 geom_reply = xcb_get_geometry_reply(HostX.conn, geom_cookie, NULL((void*)0));
1138 attr_reply = xcb_get_window_attributes_reply(HostX.conn, attr_cookie, NULL((void*)0));
1139
1140 a_attrs->x = geom_reply->x;
1141 a_attrs->y = geom_reply->y;
1142 a_attrs->width = geom_reply->width;
1143 a_attrs->height = geom_reply->height;
1144 a_attrs->visualid = attr_reply->visual;
1145
1146 free(geom_reply);
1147 free(attr_reply);
1148 return TRUE1;
1149}
1150
1151int
1152hostx_get_visuals_info(EphyrHostVisualInfo ** a_visuals, int *a_num_entries)
1153{
1154 Bool is_ok = FALSE0;
1155 EphyrHostVisualInfo *host_visuals = NULL((void*)0);
1156 int nb_items = 0, i = 0, screen_num;
1157 xcb_screen_iterator_t screens;
1158 xcb_depth_iterator_t depths;
1159
1160 EPHYR_RETURN_VAL_IF_FAIL(a_visuals && a_num_entries, FALSE)if (!(a_visuals && a_num_entries)) {;return 0;};
1161 EPHYR_LOG("enter\n");
1162
1163 screens = xcb_setup_roots_iterator(xcb_get_setup(HostX.conn));
1164 for (screen_num = 0; screens.rem; screen_num++, xcb_screen_next(&screens)) {
1165 depths = xcb_screen_allowed_depths_iterator(screens.data);
1166 for (; depths.rem; xcb_depth_next(&depths)) {
1167 xcb_visualtype_t *visuals = xcb_depth_visuals(depths.data);
1168 EphyrHostVisualInfo *tmp_visuals =
1169 reallocarrayxreallocarray(host_visuals,
1170 nb_items + depths.data->visuals_len,
1171 sizeof(EphyrHostVisualInfo));
1172 if (!tmp_visuals) {
1173 goto out;
1174 }
1175 host_visuals = tmp_visuals;
1176 for (i = 0; i < depths.data->visuals_len; i++) {
1177 host_visuals[nb_items + i].visualid = visuals[i].visual_id;
1178 host_visuals[nb_items + i].screen = screen_num;
1179 host_visuals[nb_items + i].depth = depths.data->depth;
1180 host_visuals[nb_items + i].class = visuals[i]._class;
1181 host_visuals[nb_items + i].red_mask = visuals[i].red_mask;
1182 host_visuals[nb_items + i].green_mask = visuals[i].green_mask;
1183 host_visuals[nb_items + i].blue_mask = visuals[i].blue_mask;
1184 host_visuals[nb_items + i].colormap_size = visuals[i].colormap_entries;
1185 host_visuals[nb_items + i].bits_per_rgb = visuals[i].bits_per_rgb_value;
1186 }
1187 nb_items += depths.data->visuals_len;
1188 }
1189 }
1190
1191 EPHYR_LOG("host advertises %d visuals\n", nb_items);
1192 *a_visuals = host_visuals;
1193 *a_num_entries = nb_items;
1194 host_visuals = NULL((void*)0);
1195
1196 is_ok = TRUE1;
1197out:
1198 free(host_visuals);
1199 host_visuals = NULL((void*)0);
1200 EPHYR_LOG("leave\n");
1201 return is_ok;
1202
1203}
1204
1205int
1206hostx_create_window(int a_screen_number,
1207 EphyrBox * a_geometry,
1208 int a_visual_id, int *a_host_peer /*out parameter */ )
1209{
1210 Bool is_ok = FALSE0;
1211 xcb_window_t win;
1212 int winmask = 0;
1213 uint32_t attrs[2];
1214 xcb_screen_t *screen = xcb_aux_get_screen(HostX.conn, hostx_get_screen());
1215 xcb_visualtype_t *visual;
1216 int depth = 0;
1217 EphyrScrPriv *scrpriv = HostX.screens[a_screen_number]->driver;
1218
1219 EPHYR_RETURN_VAL_IF_FAIL(screen && a_geometry, FALSE)if (!(screen && a_geometry)) {;return 0;};
1220
1221 EPHYR_LOG("enter\n");
1222
1223 visual = xcb_aux_find_visual_by_id(screen, a_visual_id);
1224 if (!visual) {
1225 EPHYR_LOG_ERROR ("argh, could not find a remote visual with id:%d\n",
1226 a_visual_id);
1227 goto out;
1228 }
1229 depth = xcb_aux_get_depth_of_visual(screen, a_visual_id);
1230
1231 winmask = XCB_CW_EVENT_MASK | XCB_CW_COLORMAP;
1232 attrs[0] = XCB_EVENT_MASK_BUTTON_PRESS
1233 |XCB_EVENT_MASK_BUTTON_RELEASE
1234 |XCB_EVENT_MASK_POINTER_MOTION
1235 |XCB_EVENT_MASK_KEY_PRESS
1236 |XCB_EVENT_MASK_KEY_RELEASE
1237 |XCB_EVENT_MASK_EXPOSURE;
1238 attrs[1] = xcb_generate_id(HostX.conn);
1239 xcb_create_colormap(HostX.conn,
1240 XCB_COLORMAP_ALLOC_NONE,
1241 attrs[1],
1242 hostx_get_window(a_screen_number),
1243 a_visual_id);
1244
1245 win = xcb_generate_id(HostX.conn);
1246 xcb_create_window(HostX.conn,
1247 depth,
1248 win,
1249 hostx_get_window (a_screen_number),
1250 a_geometry->x, a_geometry->y,
1251 a_geometry->width, a_geometry->height, 0,
1252 XCB_WINDOW_CLASS_COPY_FROM_PARENT,
1253 a_visual_id, winmask, attrs);
1254
1255 if (scrpriv->peer_win == XCB_NONE0L) {
1256 scrpriv->peer_win = win;
1257 }
1258 else {
1259 EPHYR_LOG_ERROR("multiple peer windows created for same screen\n");
1260 }
1261 xcb_flush(HostX.conn);
1262 xcb_map_window(HostX.conn, win);
1263 *a_host_peer = win;
1264 is_ok = TRUE1;
1265 out:
1266 EPHYR_LOG("leave\n");
1267 return is_ok;
1268}
1269
1270int
1271hostx_destroy_window(int a_win)
1272{
1273 xcb_destroy_window(HostX.conn, a_win);
1274 xcb_flush(HostX.conn);
1275 return TRUE1;
1276}
1277
1278int
1279hostx_set_window_geometry(int a_win, EphyrBox * a_geo)
1280{
1281 uint32_t mask = XCB_CONFIG_WINDOW_X
1282 | XCB_CONFIG_WINDOW_Y
1283 | XCB_CONFIG_WINDOW_WIDTH
1284 | XCB_CONFIG_WINDOW_HEIGHT;
1285 uint32_t values[4];
1286
1287 EPHYR_RETURN_VAL_IF_FAIL(a_geo, FALSE)if (!(a_geo)) {;return 0;};
1288
1289 EPHYR_LOG("enter. x,y,w,h:(%d,%d,%d,%d)\n",
1290 a_geo->x, a_geo->y, a_geo->width, a_geo->height);
1291
1292 values[0] = a_geo->x;
1293 values[1] = a_geo->y;
1294 values[2] = a_geo->width;
1295 values[3] = a_geo->height;
1296 xcb_configure_window(HostX.conn, a_win, mask, values);
1297
1298 EPHYR_LOG("leave\n");
1299 return TRUE1;
1300}
1301
1302int
1303hostx_set_window_bounding_rectangles(int a_window,
1304 EphyrRect * a_rects, int a_num_rects)
1305{
1306 Bool is_ok = FALSE0;
1307 int i = 0;
1308 xcb_rectangle_t *rects = NULL((void*)0);
1309
1310 EPHYR_RETURN_VAL_IF_FAIL(a_rects, FALSE)if (!(a_rects)) {;return 0;};
1311
1312 EPHYR_LOG("enter. num rects:%d\n", a_num_rects);
1313
1314 rects = calloc(a_num_rects, sizeof (xcb_rectangle_t));
1315 if (!rects)
1316 goto out;
1317 for (i = 0; i < a_num_rects; i++) {
1318 rects[i].x = a_rects[i].x1;
1319 rects[i].y = a_rects[i].y1;
1320 rects[i].width = abs(a_rects[i].x2 - a_rects[i].x1);
1321 rects[i].height = abs(a_rects[i].y2 - a_rects[i].y1);
1322 EPHYR_LOG("borders clipped to rect[x:%d,y:%d,w:%d,h:%d]\n",
1323 rects[i].x, rects[i].y, rects[i].width, rects[i].height);
1324 }
1325 xcb_shape_rectangles(HostX.conn,
1326 XCB_SHAPE_SO_SET,
1327 XCB_SHAPE_SK_BOUNDING,
1328 XCB_CLIP_ORDERING_YX_BANDED,
1329 a_window,
1330 0, 0,
1331 a_num_rects,
1332 rects);
1333 is_ok = TRUE1;
1334
1335out:
1336 free(rects);
1337 rects = NULL((void*)0);
1338 EPHYR_LOG("leave\n");
1339 return is_ok;
1340}
1341
1342#ifdef XF86DRI
1343typedef struct {
1344 int is_valid;
1345 int local_id;
1346 int remote_id;
1347} ResourcePair;
1348
1349#define RESOURCE_PEERS_SIZE 1024*10
1350static ResourcePair resource_peers[RESOURCE_PEERS_SIZE];
1351
1352int
1353hostx_allocate_resource_id_peer(int a_local_resource_id,
1354 int *a_remote_resource_id)
1355{
1356 int i = 0;
1357 ResourcePair *peer = NULL((void*)0);
1358
1359 /*
1360 * first make sure a resource peer
1361 * does not exist already for
1362 * a_local_resource_id
1363 */
1364 for (i = 0; i < RESOURCE_PEERS_SIZE; i++) {
1365 if (resource_peers[i].is_valid
1366 && resource_peers[i].local_id == a_local_resource_id) {
1367 peer = &resource_peers[i];
1368 break;
1369 }
1370 }
1371 /*
1372 * find one free peer entry, an feed it with
1373 */
1374 if (!peer) {
1375 for (i = 0; i < RESOURCE_PEERS_SIZE; i++) {
1376 if (!resource_peers[i].is_valid) {
1377 peer = &resource_peers[i];
1378 break;
1379 }
1380 }
1381 if (peer) {
1382 peer->remote_id = xcb_generate_id(HostX.conn);
1383 peer->local_id = a_local_resource_id;
1384 peer->is_valid = TRUE1;
1385 }
1386 }
1387 if (peer) {
1388 *a_remote_resource_id = peer->remote_id;
1389 return TRUE1;
1390 }
1391 return FALSE0;
1392}
1393
1394int
1395hostx_get_resource_id_peer(int a_local_resource_id, int *a_remote_resource_id)
1396{
1397 int i = 0;
1398 ResourcePair *peer = NULL((void*)0);
1399
1400 for (i = 0; i < RESOURCE_PEERS_SIZE; i++) {
1401 if (resource_peers[i].is_valid
1402 && resource_peers[i].local_id == a_local_resource_id) {
1403 peer = &resource_peers[i];
1404 break;
1405 }
1406 }
1407 if (peer) {
1408 *a_remote_resource_id = peer->remote_id;
1409 return TRUE1;
1410 }
1411 return FALSE0;
1412}
1413
1414#endif /* XF86DRI */
1415
1416#ifdef GLAMOR
1417Bool
1418ephyr_glamor_init(ScreenPtr screen)
1419{
1420 KdScreenPriv(screen)KdPrivScreenPtr pScreenPriv = ((KdPrivScreenPtr) dixLookupPrivate
(&(screen)->devPrivates, (&kdScreenPrivateKeyRec))
)
;
1421 KdScreenInfo *kd_screen = pScreenPriv->screen;
1422 EphyrScrPriv *scrpriv = kd_screen->driver;
1423
1424 scrpriv->glamor = ephyr_glamor_glx_screen_init(scrpriv->win);
1425 ephyr_glamor_set_window_size(scrpriv->glamor,
1426 scrpriv->win_width, scrpriv->win_height);
1427
1428 if (!glamor_init(screen, 0)) {
1429 FatalError("Failed to initialize glamor\n");
1430 return FALSE0;
1431 }
1432
1433 return TRUE1;
1434}
1435
1436Bool
1437ephyr_glamor_create_screen_resources(ScreenPtr pScreen)
1438{
1439 KdScreenPriv(pScreen)KdPrivScreenPtr pScreenPriv = ((KdPrivScreenPtr) dixLookupPrivate
(&(pScreen)->devPrivates, (&kdScreenPrivateKeyRec)
))
;
1440 KdScreenInfo *kd_screen = pScreenPriv->screen;
1441 EphyrScrPriv *scrpriv = kd_screen->driver;
1442 PixmapPtr screen_pixmap;
1443 uint32_t tex;
1444
1445 if (!ephyr_glamor)
1446 return TRUE1;
1447
1448 /* kdrive's fbSetupScreen() told mi to have
1449 * miCreateScreenResources() (which is called before this) make a
1450 * scratch pixmap wrapping ephyr-glamor's NULL
1451 * KdScreenInfo->fb.framebuffer.
1452 *
1453 * We want a real (texture-based) screen pixmap at this point.
1454 * This is what glamor will render into, and we'll then texture
1455 * out of that into the host's window to present the results.
1456 *
1457 * Thus, delete the current screen pixmap, and put a fresh one in.
1458 */
1459 screen_pixmap = pScreen->GetScreenPixmap(pScreen);
1460 pScreen->DestroyPixmap(screen_pixmap);
1461
1462 screen_pixmap = pScreen->CreatePixmap(pScreen,
1463 pScreen->width,
1464 pScreen->height,
1465 pScreen->rootDepth,
1466 GLAMOR_CREATE_NO_LARGE);
1467
1468 pScreen->SetScreenPixmap(screen_pixmap);
1469
1470 /* Tell the GLX code what to GL texture to read from. */
1471 tex = glamor_get_pixmap_texture(screen_pixmap);
1472 ephyr_glamor_set_texture(scrpriv->glamor, tex);
1473
1474 return TRUE1;
1475}
1476
1477void
1478ephyr_glamor_enable(ScreenPtr screen)
1479{
1480}
1481
1482void
1483ephyr_glamor_disable(ScreenPtr screen)
1484{
1485}
1486
1487void
1488ephyr_glamor_fini(ScreenPtr screen)
1489{
1490 KdScreenPriv(screen)KdPrivScreenPtr pScreenPriv = ((KdPrivScreenPtr) dixLookupPrivate
(&(screen)->devPrivates, (&kdScreenPrivateKeyRec))
)
;
1491 KdScreenInfo *kd_screen = pScreenPriv->screen;
1492 EphyrScrPriv *scrpriv = kd_screen->driver;
1493
1494 glamor_fini(screen);
1495 ephyr_glamor_glx_screen_fini(scrpriv->glamor);
1496 scrpriv->glamor = NULL((void*)0);
1497}
1498#endif