aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/hw/kdrive/ephyr/ephyr.c
blob: 4519398a9f63c63fcf2d0f774a7824aa36fd49f8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
/*
 * Xephyr - A kdrive X server thats runs in a host X window.
 *          Authored by Matthew Allum <mallum@openedhand.com>
 * 
 * Copyright � 2004 Nokia 
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Nokia not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission. Nokia makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * NOKIA DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL NOKIA BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
#include "ephyr.h"

#include "inputstr.h"
#include "scrnintstr.h"
#include "ephyrlog.h"

#ifdef XF86DRI
#include "ephyrdri.h"
#include "ephyrdriext.h"
#include "ephyrglxext.h"
#endif /* XF86DRI */

#include "xkbsrv.h"

extern int KdTsPhyScreen;
#ifdef GLXEXT
extern Bool noGlxVisualInit;
#endif

KdKeyboardInfo *ephyrKbd;
KdPointerInfo *ephyrMouse;
EphyrKeySyms ephyrKeySyms;
Bool ephyrNoDRI=FALSE ;
Bool ephyrNoXV=FALSE ;

static int mouseState = 0;

typedef struct _EphyrInputPrivate {
    Bool    enabled;
} EphyrKbdPrivate, EphyrPointerPrivate;

Bool   EphyrWantGrayScale = 0;


Bool
ephyrInitialize (KdCardInfo *card, EphyrPriv *priv)
{
#ifdef _MSC_VER
  __asm int 3;
#else
  OsSignal(SIGUSR1, hostx_handle_signal);
#endif  
  priv->base = 0;
  priv->bytes_per_line = 0;
  return TRUE;
}

Bool
ephyrCardInit (KdCardInfo *card)
{
  EphyrPriv	*priv;
  
  priv = (EphyrPriv *) malloc(sizeof (EphyrPriv));
  if (!priv)
    return FALSE;
  
  if (!ephyrInitialize (card, priv))
    {
      free(priv);
      return FALSE;
    }
  card->driver = priv;
  
  return TRUE;
}

Bool
ephyrScreenInitialize (KdScreenInfo *screen, EphyrScrPriv *scrpriv)
{
  int width = 640, height = 480; 
  CARD32 redMask, greenMask, blueMask;
  
  if (hostx_want_screen_size(screen, &width, &height)
      || !screen->width || !screen->height)
    {
      screen->width = width;
      screen->height = height;
    }

  if (EphyrWantGrayScale)
    screen->fb.depth = 8;

  if (screen->fb.depth && screen->fb.depth != hostx_get_depth())
    {
      if (screen->fb.depth < hostx_get_depth()
	  && (screen->fb.depth == 24 || screen->fb.depth == 16
	      || screen->fb.depth == 8))
	{
	  hostx_set_server_depth(screen, screen->fb.depth);
	}
      else
	ErrorF("\nXephyr: requested screen depth not supported, setting to match hosts.\n");
    }
  
  screen->fb.depth = hostx_get_server_depth(screen);
  screen->rate = 72;
  
  if (screen->fb.depth <= 8)
    {
      if (EphyrWantGrayScale)
	screen->fb.visuals = ((1 << StaticGray) | (1 << GrayScale));
      else
	screen->fb.visuals = ((1 << StaticGray) |
			      (1 << GrayScale) |
			      (1 << StaticColor) |
			      (1 << PseudoColor) |
			      (1 << TrueColor) |
			      (1 << DirectColor));
      
      screen->fb.redMask   = 0x00;
      screen->fb.greenMask = 0x00;
      screen->fb.blueMask  = 0x00;
      screen->fb.depth        = 8;
      screen->fb.bitsPerPixel = 8;
    }
  else 
    {
      screen->fb.visuals = (1 << TrueColor);
      
      if (screen->fb.depth <= 15)
	{
	  screen->fb.depth = 15;
	  screen->fb.bitsPerPixel = 16;
	}
      else if (screen->fb.depth <= 16)
	{
	  screen->fb.depth = 16;
	  screen->fb.bitsPerPixel = 16;
	}
      else if (screen->fb.depth <= 24)
	{
	  screen->fb.depth = 24;
	  screen->fb.bitsPerPixel = 32;
	}
      else if (screen->fb.depth <= 30)
	{
	  screen->fb.depth = 30;
	  screen->fb.bitsPerPixel = 32;
	}
      else
	{
	  ErrorF("\nXephyr: Unsupported screen depth %d\n",
	         screen->fb.depth);
	  return FALSE;
	}

      hostx_get_visual_masks (screen, &redMask, &greenMask, &blueMask);

      screen->fb.redMask = (Pixel) redMask;
      screen->fb.greenMask = (Pixel) greenMask;
      screen->fb.blueMask = (Pixel) blueMask;

    }
  
  scrpriv->randr = screen->randr;

  return ephyrMapFramebuffer (screen);
}

Bool
ephyrScreenInit (KdScreenInfo *screen)
{
  EphyrScrPriv *scrpriv;
  
  scrpriv = calloc(1, sizeof (EphyrScrPriv));

  if (!scrpriv)
    return FALSE;

  screen->driver = scrpriv;

  if (!ephyrScreenInitialize (screen, scrpriv))
    {
      screen->driver = 0;
      free(scrpriv);
      return FALSE;
    }

  return TRUE;
}
    
void*
ephyrWindowLinear (ScreenPtr	pScreen,
		   CARD32	row,
		   CARD32	offset,
		   int		mode,
		   CARD32	*size,
		   void		*closure)
{
  KdScreenPriv(pScreen);
  EphyrPriv	    *priv = pScreenPriv->card->driver;
  
  if (!pScreenPriv->enabled)
    return 0;

  *size = priv->bytes_per_line;
  return priv->base + row * priv->bytes_per_line + offset;
}

/**
 * Figure out display buffer size. If fakexa is enabled, allocate a larger
 * buffer so that fakexa has space to put offscreen pixmaps.
 */
int
ephyrBufferHeight(KdScreenInfo *screen)
{
    int buffer_height;
    if (ephyrFuncs.initAccel == NULL)
	buffer_height = screen->height;
    else
	buffer_height = 3 * screen->height;
    return buffer_height;
}


Bool
ephyrMapFramebuffer (KdScreenInfo *screen)
{
  EphyrScrPriv  *scrpriv = screen->driver;
  EphyrPriv	  *priv    = screen->card->driver;
  KdPointerMatrix m;
  int buffer_height;
  
  EPHYR_LOG("screen->width: %d, screen->height: %d index=%d",
	     screen->width, screen->height, screen->mynum);
  
  KdComputePointerMatrix (&m, scrpriv->randr, screen->width, screen->height);
  KdSetPointerMatrix (&m);
  
  priv->bytes_per_line = ((screen->width * screen->fb.bitsPerPixel + 31) >> 5) << 2;

  buffer_height = ephyrBufferHeight(screen);

  priv->base = hostx_screen_init (screen, screen->width, screen->height, buffer_height);

  if ((scrpriv->randr & RR_Rotate_0) && !(scrpriv->randr & RR_Reflect_All))
    {
      scrpriv->shadow = FALSE;
      
      screen->fb.byteStride = priv->bytes_per_line;
      screen->fb.pixelStride = screen->width;
      screen->fb.frameBuffer = (CARD8 *) (priv->base);
    }
  else
    {
      /* Rotated/Reflected so we need to use shadow fb */
      scrpriv->shadow = TRUE;
      
      EPHYR_LOG("allocing shadow");
      
      KdShadowFbAlloc (screen,
		       scrpriv->randr & (RR_Rotate_90|RR_Rotate_270));
    }
  
  return TRUE;
}

void
ephyrSetScreenSizes (ScreenPtr pScreen)
{
  KdScreenPriv(pScreen);
  KdScreenInfo	*screen = pScreenPriv->screen;
  EphyrScrPriv	*scrpriv = screen->driver;
  
  if (scrpriv->randr & (RR_Rotate_0|RR_Rotate_180))
    {
      pScreen->width = screen->width;
      pScreen->height = screen->height;
      pScreen->mmWidth = screen->width_mm;
      pScreen->mmHeight = screen->height_mm;
    }
  else 
    {
      pScreen->width = screen->height;
      pScreen->height = screen->width;
      pScreen->mmWidth = screen->height_mm;
      pScreen->mmHeight = screen->width_mm;
    }
}

Bool
ephyrUnmapFramebuffer (KdScreenInfo *screen)
{
  EphyrScrPriv  *scrpriv = screen->driver;
  
  if (scrpriv->shadow)
    KdShadowFbFree (screen);
  
  /* Note, priv->base will get freed when XImage recreated */
  
  return TRUE;
}

void 
ephyrShadowUpdate (ScreenPtr pScreen, shadowBufPtr pBuf)
{
  KdScreenPriv(pScreen);
  KdScreenInfo *screen = pScreenPriv->screen;
  
  EPHYR_LOG("slow paint");
  
  /* FIXME: Slow Rotated/Reflected updates could be much
   * much faster efficiently updating via tranforming 
   * pBuf->pDamage  regions     
  */
  shadowUpdateRotatePacked(pScreen, pBuf);
  hostx_paint_rect(screen, 0,0,0,0, screen->width, screen->height);
}

static void
ephyrInternalDamageRedisplay (ScreenPtr pScreen)
{
  KdScreenPriv(pScreen);
  KdScreenInfo	*screen = pScreenPriv->screen;
  EphyrScrPriv	*scrpriv = screen->driver;
  RegionPtr	 pRegion;

  if (!scrpriv || !scrpriv->pDamage)
    return;

  pRegion = DamageRegion (scrpriv->pDamage);

  if (RegionNotEmpty(pRegion))
    {
      int           nbox;
      BoxPtr        pbox;

      nbox = RegionNumRects (pRegion);
      pbox = RegionRects (pRegion);

      while (nbox--)
        {
          hostx_paint_rect(screen,
                           pbox->x1, pbox->y1,
                           pbox->x1, pbox->y1,
                           pbox->x2 - pbox->x1,
                           pbox->y2 - pbox->y1);
          pbox++;
        }
      DamageEmpty (scrpriv->pDamage);
    }
}

static void
ephyrInternalDamageBlockHandler (pointer   data,
				 OSTimePtr pTimeout,
				 pointer   pRead)
{
  ScreenPtr pScreen = (ScreenPtr) data;
  
  ephyrInternalDamageRedisplay (pScreen);
}

static void
ephyrInternalDamageWakeupHandler (pointer data, int i, pointer LastSelectMask)
{
  /* FIXME: Not needed ? */
}

Bool
ephyrSetInternalDamage (ScreenPtr pScreen)
{
  KdScreenPriv(pScreen);
  KdScreenInfo	*screen = pScreenPriv->screen;
  EphyrScrPriv	*scrpriv = screen->driver;
  PixmapPtr      pPixmap = NULL;
  
  scrpriv->pDamage = DamageCreate ((DamageReportFunc) 0,
				   (DamageDestroyFunc) 0,
				   DamageReportNone,
				   TRUE,
				   pScreen,
				   pScreen);
  
  if (!RegisterBlockAndWakeupHandlers (ephyrInternalDamageBlockHandler,
				       ephyrInternalDamageWakeupHandler,
				       (pointer) pScreen))
    return FALSE;
  
  pPixmap = (*pScreen->GetScreenPixmap) (pScreen);
  
  DamageRegister (&pPixmap->drawable, scrpriv->pDamage);
      
  return TRUE;
}

void
ephyrUnsetInternalDamage (ScreenPtr pScreen)
{
  KdScreenPriv(pScreen);
  KdScreenInfo	*screen = pScreenPriv->screen;
  EphyrScrPriv	*scrpriv = screen->driver;
  PixmapPtr      pPixmap = NULL;
  
  pPixmap = (*pScreen->GetScreenPixmap) (pScreen);
  DamageUnregister (&pPixmap->drawable, scrpriv->pDamage);
  DamageDestroy (scrpriv->pDamage);
  
  RemoveBlockAndWakeupHandlers (ephyrInternalDamageBlockHandler,
				ephyrInternalDamageWakeupHandler,
				(pointer) pScreen);
}

#ifdef RANDR
Bool
ephyrRandRGetInfo (ScreenPtr pScreen, Rotation *rotations)
{
  KdScreenPriv(pScreen);
  KdScreenInfo	    *screen = pScreenPriv->screen;
  EphyrScrPriv	    *scrpriv = screen->driver;
  RRScreenSizePtr	    pSize;
  Rotation		    randr;
  int			    n = 0;
 
  struct { int width, height; } sizes[] = 
    {
      { 1600, 1200 },
      { 1400, 1050 },
      { 1280, 960  },
      { 1280, 1024 },
      { 1152, 864 },
      { 1024, 768 },
      { 832, 624 },
      { 800, 600 },
      { 720, 400 },
      { 480, 640 },
      { 640, 480 },
      { 640, 400 },
      { 320, 240 },
      { 240, 320 },
      { 160, 160 }, 
      { 0, 0 }
    };

  EPHYR_LOG("mark");

  *rotations = RR_Rotate_All|RR_Reflect_All;

  if (!hostx_want_preexisting_window (screen)
      && !hostx_want_fullscreen ()) /* only if no -parent switch */
    {
      while (sizes[n].width != 0 && sizes[n].height != 0)
	{
	  RRRegisterSize (pScreen,
			  sizes[n].width,
			  sizes[n].height, 
			  (sizes[n].width * screen->width_mm)/screen->width,
			  (sizes[n].height *screen->height_mm)/screen->height
			  );
	  n++;
	}
    }
  
  pSize = RRRegisterSize (pScreen,
			  screen->width,
			  screen->height, 
			  screen->width_mm,
			  screen->height_mm);
    
  randr = KdSubRotation (scrpriv->randr, screen->randr);
  
  RRSetCurrentConfig (pScreen, randr, 0, pSize);
    
  return TRUE;
}

Bool
ephyrRandRSetConfig (ScreenPtr		pScreen,
		     Rotation		randr,
		     int		rate,
		     RRScreenSizePtr	pSize)
{
  KdScreenPriv(pScreen);
  KdScreenInfo	*screen    = pScreenPriv->screen;
  EphyrScrPriv	*scrpriv   = screen->driver;
  Bool		wasEnabled = pScreenPriv->enabled;
  EphyrScrPriv	oldscr;
  int		oldwidth, oldheight, oldmmwidth, oldmmheight;
  Bool          oldshadow;
  int		newwidth, newheight;
  
  if (screen->randr & (RR_Rotate_0|RR_Rotate_180))
    {
      newwidth = pSize->width;
      newheight = pSize->height;
    }
  else
    {
      newwidth = pSize->height;
      newheight = pSize->width;
    }
  
  if (wasEnabled)
    KdDisableScreen (pScreen);

  oldscr = *scrpriv;
    
  oldwidth    = screen->width;
  oldheight   = screen->height;
  oldmmwidth  = pScreen->mmWidth;
  oldmmheight = pScreen->mmHeight;
  oldshadow   = scrpriv->shadow;
  
  /*
   * Set new configuration
   */
  
  scrpriv->randr = KdAddRotation (screen->randr, randr);
  
  ephyrUnmapFramebuffer (screen); 
  
  screen->width  = newwidth;
  screen->height = newheight;
  
  if (!ephyrMapFramebuffer (screen))
    goto bail4;
  
  /* FIXME below should go in own call */
  
  if (oldshadow)
    KdShadowUnset (screen->pScreen);
  else
    ephyrUnsetInternalDamage(screen->pScreen);
  
  if (scrpriv->shadow)
    {
      if (!KdShadowSet (screen->pScreen, 
			scrpriv->randr, 
			ephyrShadowUpdate, 
			ephyrWindowLinear))
	goto bail4;
    }
  else
    {
      /* Without shadow fb ( non rotated ) we need 
       * to use damage to efficiently update display
       * via signal regions what to copy from 'fb'.
       */
      if (!ephyrSetInternalDamage(screen->pScreen))
	goto bail4;
    }
  
  ephyrSetScreenSizes (screen->pScreen);
  
  /*
   * Set frame buffer mapping
   */
  (*pScreen->ModifyPixmapHeader) (fbGetScreenPixmap (pScreen),
				  pScreen->width,
				  pScreen->height,
				  screen->fb.depth,
				  screen->fb.bitsPerPixel,
				  screen->fb.byteStride,
				  screen->fb.frameBuffer);
  
  /* set the subpixel order */
  
  KdSetSubpixelOrder (pScreen, scrpriv->randr);
  
  if (wasEnabled)
    KdEnableScreen (pScreen);
  
  return TRUE;
  
 bail4:
  EPHYR_LOG("bailed");
  
  ephyrUnmapFramebuffer (screen);
  *scrpriv = oldscr;
  (void) ephyrMapFramebuffer (screen);
  
  pScreen->width = oldwidth;
  pScreen->height = oldheight;
  pScreen->mmWidth = oldmmwidth;
  pScreen->mmHeight = oldmmheight;
  
  if (wasEnabled)
    KdEnableScreen (pScreen);
  return FALSE;
}

Bool
ephyrRandRInit (ScreenPtr pScreen)
{
  rrScrPrivPtr    pScrPriv;
  
  if (!RRScreenInit (pScreen))
    return FALSE;
  
  pScrPriv = rrGetScrPriv(pScreen);
  pScrPriv->rrGetInfo = ephyrRandRGetInfo;
  pScrPriv->rrSetConfig = ephyrRandRSetConfig;
  return TRUE;
}
#endif

Bool
ephyrCreateColormap (ColormapPtr pmap)
{
  return fbInitializeColormap (pmap);
}

Bool
ephyrInitScreen (ScreenPtr pScreen)
{
  KdScreenPriv(pScreen);
  KdScreenInfo	*screen    = pScreenPriv->screen;

  EPHYR_LOG ("pScreen->myNum:%d\n", pScreen->myNum) ;
  hostx_set_screen_number (screen, pScreen->myNum);
  hostx_set_win_title (screen, "(ctrl+shift grabs mouse and keyboard)") ;
  pScreen->CreateColormap = ephyrCreateColormap;

#ifdef XV
  if (!ephyrNoXV) {
      if (!ephyrInitVideo (pScreen)) {
          EPHYR_LOG_ERROR ("failed to initialize xvideo\n") ;
      } else {
          EPHYR_LOG ("initialized xvideo okay\n") ;
      }
  }
#endif /*XV*/

#ifdef XF86DRI
  if (!ephyrNoDRI && !hostx_has_dri ()) {
      EPHYR_LOG ("host x does not support DRI. Disabling DRI forwarding\n") ;
      ephyrNoDRI = TRUE ;
#ifdef GLXEXT
      noGlxVisualInit = FALSE ;
#endif
  }
  if (!ephyrNoDRI) {
    ephyrDRIExtensionInit (pScreen) ;
    ephyrHijackGLXExtension () ;
  }
#endif

#ifdef GLXEXT
  if (ephyrNoDRI) {
      noGlxVisualInit = FALSE ;
  }
#endif

  return TRUE;
}

Bool
ephyrFinishInitScreen (ScreenPtr pScreen)
{
  /* FIXME: Calling this even if not using shadow.  
   * Seems harmless enough. But may be safer elsewhere.
   */
  if (!shadowSetup (pScreen))
    return FALSE;

#ifdef RANDR
  if (!ephyrRandRInit (pScreen))
    return FALSE;
#endif

  return TRUE;
}

Bool
ephyrCreateResources (ScreenPtr pScreen)
{
  KdScreenPriv(pScreen);
  KdScreenInfo	*screen    = pScreenPriv->screen;
  EphyrScrPriv	*scrpriv   = screen->driver;

  EPHYR_LOG("mark pScreen=%p mynum=%d shadow=%d",
            pScreen, pScreen->myNum, scrpriv->shadow);

  if (scrpriv->shadow) 
    return KdShadowSet (pScreen, 
			scrpriv->randr, 
			ephyrShadowUpdate, 
			ephyrWindowLinear);
  else
    return ephyrSetInternalDamage(pScreen); 
}

void
ephyrPreserve (KdCardInfo *card)
{
}

Bool
ephyrEnable (ScreenPtr pScreen)
{
  return TRUE;
}

Bool
ephyrDPMS (ScreenPtr pScreen, int mode)
{
  return TRUE;
}

void
ephyrDisable (ScreenPtr pScreen)
{
}

void
ephyrRestore (KdCardInfo *card)
{
}

void
ephyrScreenFini (KdScreenInfo *screen)
{
    EphyrScrPriv  *scrpriv = screen->driver;
    if (scrpriv->shadow) {
        KdShadowFbFree (screen);
    }
    free(screen->driver);
    screen->driver = NULL;
}

/*  
 * Port of Mark McLoughlin's Xnest fix for focus in + modifier bug.
 * See https://bugs.freedesktop.org/show_bug.cgi?id=3030
 */
void
ephyrUpdateModifierState(unsigned int state)
{

  DeviceIntPtr pDev = inputInfo.keyboard;
  KeyClassPtr keyc = pDev->key;
  int i;
  CARD8 mask;
  int xkb_state;
  
  if (!pDev)
      return;

  xkb_state = XkbStateFieldFromRec(&pDev->key->xkbInfo->state);
  state = state & 0xff;

  if (xkb_state == state)
    return;
      
  for (i = 0, mask = 1; i < 8; i++, mask <<= 1) {
    int key;

    /* Modifier is down, but shouldn't be
     */
    if ((xkb_state & mask) && !(state & mask)) {
      int count = keyc->modifierKeyCount[i];

      for (key = 0; key < MAP_LENGTH; key++)
        if (keyc->xkbInfo->desc->map->modmap[key] & mask) {
          if (key_is_down(pDev, key, KEY_PROCESSED))
	        KdEnqueueKeyboardEvent (ephyrKbd, key, TRUE);

          if (--count == 0)
            break;
        }
    }

    /* Modifier shoud be down, but isn't
     */
    if (!(xkb_state & mask) && (state & mask))
      for (key = 0; key < MAP_LENGTH; key++)
        if (keyc->xkbInfo->desc->map->modmap[key] & mask) {
	        KdEnqueueKeyboardEvent (ephyrKbd, key, FALSE);
          break;
        }
  }
}

static void
ephyrBlockSigio (void)
{
#ifdef _MSC_VER
    __asm int 3;
#else
    sigset_t set;

    sigemptyset (&set);
    sigaddset (&set, SIGIO);
    sigprocmask (SIG_BLOCK, &set, 0);
#endif
}

static void
ephyrUnblockSigio (void)
{
#ifdef _MSC_VER
    __asm int 3;
#else
    sigset_t set;

    sigemptyset (&set);
    sigaddset (&set, SIGIO);
    sigprocmask (SIG_UNBLOCK, &set, 0);
#endif
}

static Bool
ephyrCursorOffScreen(ScreenPtr *ppScreen, int *x, int *y)
{
  return FALSE;
}

static void
ephyrCrossScreen (ScreenPtr pScreen, Bool entering)
{
}

int ephyrCurScreen; /*current event screen*/

static void
ephyrWarpCursor (DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y)
{
    ephyrBlockSigio ();
    ephyrCurScreen = pScreen->myNum;
    miPointerWarpCursor (inputInfo.pointer, pScreen, x, y);
    ephyrUnblockSigio ();
}

miPointerScreenFuncRec ephyrPointerScreenFuncs =
{
  ephyrCursorOffScreen,
  ephyrCrossScreen,
  ephyrWarpCursor,
  NULL,
  NULL
};

#ifdef XF86DRI
/**
 * find if the remote window denoted by a_remote
 * is paired with an internal Window within the Xephyr server.
 * If the remove window is paired with an internal window, send an
 * expose event to the client insterested in the internal window expose event.
 *
 * Pairing happens when a drawable inside Xephyr is associated with
 * a GL surface in a DRI environment.
 * Look at the function ProcXF86DRICreateDrawable in ephyrdriext.c to
 * know a paired window is created.
 *
 * This is useful to make GL drawables (only windows for now) handle
 * expose events and send those events to clients.
 */
static void
ephyrExposePairedWindow (int a_remote)
{
    EphyrWindowPair *pair = NULL;
    RegionRec reg;
    ScreenPtr screen;

    if (!findWindowPairFromRemote (a_remote, &pair)) {
	EPHYR_LOG ("did not find a pair for this window\n");
	return;
    }
    screen = pair->local->drawable.pScreen;
    RegionNull(&reg);
    RegionCopy(&reg, &pair->local->clipList);
    screen->WindowExposures (pair->local, &reg, NullRegion);
    RegionUninit(&reg);
}
#endif /* XF86DRI */

void
ephyrPoll(void)
{
  EphyrHostXEvent ev;

  while (hostx_get_event(&ev))
    {
      switch (ev.type)
        {
        case EPHYR_EV_MOUSE_MOTION:
          if (!ephyrMouse ||
              !((EphyrPointerPrivate *)ephyrMouse->driverPrivate)->enabled) {
              EPHYR_LOG ("skipping mouse motion:%d\n", ephyrCurScreen) ;
              continue;
          }
          {
            if (ev.data.mouse_motion.screen >=0
                && (ephyrCurScreen != ev.data.mouse_motion.screen))
              {
                  EPHYR_LOG ("warping mouse cursor. "
                             "cur_screen%d, motion_screen:%d\n",
                             ephyrCurScreen, ev.data.mouse_motion.screen) ;
                  if (ev.data.mouse_motion.screen >= 0)
                    {
                      ephyrWarpCursor
                            (inputInfo.pointer, screenInfo.screens[ev.data.mouse_motion.screen],
                             ev.data.mouse_motion.x,
                             ev.data.mouse_motion.y );
                    }
              }
            else
              {
                  int x=0, y=0;
#ifdef XF86DRI
                  EphyrWindowPair *pair = NULL;
#endif
                  EPHYR_LOG ("enqueuing mouse motion:%d\n", ephyrCurScreen) ;
                  x = ev.data.mouse_motion.x;
                  y = ev.data.mouse_motion.y;
                  EPHYR_LOG ("initial (x,y):(%d,%d)\n", x, y) ;
#ifdef XF86DRI
                  EPHYR_LOG ("is this window peered by a gl drawable ?\n") ;
                  if (findWindowPairFromRemote (ev.data.mouse_motion.window,
                                                &pair))
                    {
                        EPHYR_LOG ("yes, it is peered\n") ;
                        x += pair->local->drawable.x;
                        y += pair->local->drawable.y;
                    }
                  else
                    {
                        EPHYR_LOG ("no, it is not peered\n") ;
                    }
                  EPHYR_LOG ("final (x,y):(%d,%d)\n", x, y) ;
#endif
                  KdEnqueuePointerEvent(ephyrMouse, mouseState, x, y, 0);
              }
          }
          break;

        case EPHYR_EV_MOUSE_PRESS:
          if (!ephyrMouse ||
              !((EphyrPointerPrivate *)ephyrMouse->driverPrivate)->enabled) {
              EPHYR_LOG ("skipping mouse press:%d\n", ephyrCurScreen) ;
              continue;
          }
          EPHYR_LOG ("enqueuing mouse press:%d\n", ephyrCurScreen) ;
	  ephyrUpdateModifierState(ev.key_state);
	  mouseState |= ev.data.mouse_down.button_num;
	  KdEnqueuePointerEvent(ephyrMouse, mouseState|KD_MOUSE_DELTA, 0, 0, 0);
	  break;

	case EPHYR_EV_MOUSE_RELEASE:
          if (!ephyrMouse ||
              !((EphyrPointerPrivate *)ephyrMouse->driverPrivate)->enabled)
              continue;
	  ephyrUpdateModifierState(ev.key_state);
	  mouseState &= ~ev.data.mouse_up.button_num;
          EPHYR_LOG ("enqueuing mouse release:%d\n", ephyrCurScreen) ;
	  KdEnqueuePointerEvent(ephyrMouse, mouseState|KD_MOUSE_DELTA, 0, 0, 0);
	  break;

	case EPHYR_EV_KEY_PRESS:
          if (!ephyrKbd ||
              !((EphyrKbdPrivate *)ephyrKbd->driverPrivate)->enabled)
              continue;
	  ephyrUpdateModifierState(ev.key_state);
	  KdEnqueueKeyboardEvent (ephyrKbd, ev.data.key_down.scancode, FALSE);
	  break;

	case EPHYR_EV_KEY_RELEASE:
          if (!ephyrKbd ||
              !((EphyrKbdPrivate *)ephyrKbd->driverPrivate)->enabled)
              continue;
	  ephyrUpdateModifierState(ev.key_state);
	  KdEnqueueKeyboardEvent (ephyrKbd, ev.data.key_up.scancode, TRUE);
	  break;

#ifdef XF86DRI
	case EPHYR_EV_EXPOSE:
	  /*
	   * We only receive expose events when the expose event have
	   * be generated for a drawable that is a host X window managed
	   * by Xephyr. Host X windows managed by Xephyr exists for instance
	   * when Xephyr is asked to create a GL drawable in a DRI environment.
	   */
	  ephyrExposePairedWindow (ev.data.expose.window);
	  break;
#endif /* XF86DRI */

	default:
	  break;
	}
    }
}

void
ephyrCardFini (KdCardInfo *card)
{
  EphyrPriv	*priv = card->driver;
  free(priv);
}

void
ephyrGetColors (ScreenPtr pScreen, int n, xColorItem *pdefs)
{
  /* XXX Not sure if this is right */
  
  EPHYR_LOG("mark");
  
  while (n--)
    {
      pdefs->red = 0;
      pdefs->green = 0;
      pdefs->blue = 0;
      pdefs++;
    }

}

void
ephyrPutColors (ScreenPtr pScreen, int n, xColorItem *pdefs)
{
  int min, max, p;

  /* XXX Not sure if this is right */

  min = 256;
  max = 0;
  
  while (n--)
    {
      p = pdefs->pixel;
      if (p < min)
	min = p;
      if (p > max)
	max = p;

      hostx_set_cmap_entry(p, 		
			   pdefs->red >> 8,
			   pdefs->green >> 8,
			   pdefs->blue >> 8);
      pdefs++;
    }
}

/* Mouse calls */

static Status
MouseInit (KdPointerInfo *pi)
{
    pi->driverPrivate = (EphyrPointerPrivate *)
                         calloc(sizeof(EphyrPointerPrivate), 1);
    ((EphyrPointerPrivate *)pi->driverPrivate)->enabled = FALSE;
    pi->nAxes = 3;
    pi->nButtons = 32;
    free(pi->name);
    pi->name = strdup("Xephyr virtual mouse");
    ephyrMouse = pi;
    return Success;
}

static Status
MouseEnable (KdPointerInfo *pi)
{
    ((EphyrPointerPrivate *)pi->driverPrivate)->enabled = TRUE;
    return Success;
}

static void
MouseDisable (KdPointerInfo *pi)
{
    ((EphyrPointerPrivate *)pi->driverPrivate)->enabled = FALSE;
    return;
}

static void
MouseFini (KdPointerInfo *pi)
{
    ephyrMouse = NULL; 
    return;
}

KdPointerDriver EphyrMouseDriver = {
    "ephyr",
    MouseInit,
    MouseEnable,
    MouseDisable,
    MouseFini,
    NULL,
};

/* Keyboard */

static Status
EphyrKeyboardInit (KdKeyboardInfo *ki)
{
  ki->driverPrivate = (EphyrKbdPrivate *)
                       calloc(sizeof(EphyrKbdPrivate), 1);
  hostx_load_keymap();
  if (!ephyrKeySyms.map) {
      ErrorF("Couldn't load keymap from host\n");
      return BadAlloc;
  }
  ki->minScanCode = ephyrKeySyms.minKeyCode;
  ki->maxScanCode = ephyrKeySyms.maxKeyCode;
  free(ki->name);
  ki->name = strdup("Xephyr virtual keyboard");
  ephyrKbd = ki;
  return Success;
}

static Status
EphyrKeyboardEnable (KdKeyboardInfo *ki)
{
    ((EphyrKbdPrivate *)ki->driverPrivate)->enabled = TRUE;

    return Success;
}

static void
EphyrKeyboardDisable (KdKeyboardInfo *ki)
{
    ((EphyrKbdPrivate *)ki->driverPrivate)->enabled = FALSE;
}

static void
EphyrKeyboardFini (KdKeyboardInfo *ki)
{
    ephyrKbd = NULL;
    return;
}

static void
EphyrKeyboardLeds (KdKeyboardInfo *ki, int leds)
{
}

static void
EphyrKeyboardBell (KdKeyboardInfo *ki, int volume, int frequency, int duration)
{
}


KdKeyboardDriver EphyrKeyboardDriver = {
    "ephyr",
    EphyrKeyboardInit,
    EphyrKeyboardEnable,
    EphyrKeyboardLeds,
    EphyrKeyboardBell,
    EphyrKeyboardDisable,
    EphyrKeyboardFini,
    NULL,
};