aboutsummaryrefslogtreecommitdiff
path: root/nxcompshad/Shadow.cpp
blob: 4a28f2c52635e2297f1378df1e9417478247c5b4 (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
/**************************************************************************/
/*                                                                        */
/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com)          */
/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de>  */
/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de>                 */
/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de>                */
/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com)           */
/*                                                                        */
/* NXCOMPSHAD, NX protocol compression and NX extensions to this software */
/* are copyright of the aforementioned persons and companies.             */
/*                                                                        */
/* Redistribution and use of the present software is allowed according    */
/* to terms specified in the file LICENSE which comes in the source       */
/* distribution.                                                          */
/*                                                                        */
/* All rights reserved.                                                   */
/*                                                                        */
/* NOTE: This software has received contributions from various other      */
/* contributors, only the core maintainers and supporters are listed as   */
/* copyright holders. Please contact us, if you feel you should be listed */
/* as copyright holder, as well.                                          */
/*                                                                        */
/**************************************************************************/

#include <signal.h>
#include <string.h>

#define PANIC
#define WARNING
#undef  TEST
#undef  DEBUG

#include "Logger.h"
#include "Shadow.h"
#include "Poller.h"
#include "Manager.h"

typedef struct {
    KeySym  *map;
    KeyCode minKeyCode,
            maxKeyCode;
    int     mapWidth;
} KeySymsRec, *KeySymsPtr;

KeySymsPtr NXShadowKeymap = NULL;

ShadowOptions NXShadowOptions = {1, 1, -1};

static int mirrorException = 0;

static UpdateManager *updateManager;
static Poller *poller;
static Input *input;

int NXShadowRemoveAllUpdaters();

inline bool NXShadowNotInitialized()
{
  //
  // updateManager depends on input and poller.
  // So this test seem redundant.
  //
  // return (input == NULL) || (poller == NULL) || (updateManager == NULL);
  //

  return (updateManager == NULL);
}

#ifdef NEED_SIGNAL_HANDLER
static void NXSignalHandler(int signal)
{
  logTest("NXSignalHandler", "Got signal [%d]", signal);

  if (signal == SIGINT)
  {
    mirrorException = 1;
  }
  else if (signal == SIGTERM)
  {
    mirrorException = 1;
  }
}

static int NXInitSignal()
{
  logTrace("NXInitSignal");

  struct sigaction sa;

  sa.sa_handler = NXSignalHandler;
  sigfillset(&sa.sa_mask);
  sa.sa_flags = 0;

  int res;

  while ((res = sigaction(SIGINT, &sa, NULL)) == -1 &&
             errno == EINTR);

  if (res == -1)
  {
    logError("NXInitSignal", EGET());

    return -1;
  }

  return 1;
}
#endif

static void NXHandleException()
{
  if (mirrorException)
  {
    mirrorException = 0;

    NXShadowRemoveAllUpdaters();
  }
}

static int NXCreateInput(char *keymap, char *shadowDisplayName)
{
  logTrace("NXCreateInput");

  input = new Input;

  if (input == NULL)
  {
    logError("NXCreateInput", ESET(ENOMEM));

    return -1;
  }

  input -> setKeymap(keymap);

  input -> setShadowDisplayName(shadowDisplayName);

  return 1;
}

static int NXCreatePoller(Display *display, Display **shadowDisplay)
{
  logTrace("NXCreatePoller");

  if (input == NULL)
  {
    logError("NXCreatePoller", ESET(EBADFD));

    return -1;
  }

  poller = new Poller(input,display);

  if (poller == NULL)
  {
    logError("NXCreatePoller", ESET(ENOMEM));

    return -1;
  }

  if (poller -> init() == -1)
  {
    logWarning("NXCreatePoller", "Failed to initialize poller.");

    return -1;
  }

  *shadowDisplay = poller -> getShadowDisplay();

  logTest("NXCreatePoller", "Poller geometry [%d, %d], ShadowDisplay[%p].", poller -> width(),
              poller -> height(), (Display *) *shadowDisplay);

  return 1;
}

static int NXCreateUpdateManager()
{
  logTrace("NXCreateUpdateManager");

  if (input == NULL || poller == NULL)
  {
    logError("NXCreateUpdateManager", ESET(EBADFD));

    return -1;
  }

  updateManager = new UpdateManager(poller -> width(), poller -> height(),
                                        poller -> getFrameBuffer(), input);

  if (updateManager == NULL)
  {
    logError("NXCreateUpdateManager", ESET(ENOMEM));

    return -1;
  }

  return 1;
}

void  NXShadowResetOptions()
{
  NXShadowOptions.optionShmExtension = 1;
  NXShadowOptions.optionDamageExtension = 1;
}

//
// Exported functions.
//

int NXShadowHasUpdaters()
{
  logTrace("NXShadowHasUpdaters");

  return (updateManager && updateManager -> numberOfUpdaters()) ? 1 : 0;
}

int NXShadowRemoveAllUpdaters()
{
  logTrace("NXShadowRemoveAllUpdaters");

  return updateManager ? updateManager -> removeAllUpdaters() : 0;
}

int NXShadowRemoveUpdater(UpdaterHandle handle)
{
  logTrace("NXShadowRemoveUpdater");

  return updateManager ? updateManager -> removeUpdater(handle) : 0;
}

UpdaterHandle NXShadowAddUpdater(char *displayName)
{
  logTrace("NXShadowAddUpdater");

  return updateManager ? updateManager -> addUpdater(displayName, NULL) : NULL;
}

int NXShadowAddUpdaterDisplay(void *dpy, int *w, int *h, unsigned char *d)
{
  Display *display = reinterpret_cast<Display*>(dpy);

  logTrace("NXShadowAddUpdaterDisplay");

  if ((updateManager ? updateManager -> addUpdater(NULL, display) : NULL) == NULL)
  {
    logTest("NXShadowAddUpdaterDisplay", "Error");

    return 0;
  }

  *w = updateManager -> getWidth();
  *h = updateManager -> getHeight();
  *d = poller -> depth();

  return 1;
}

int NXShadowCreate(void *dpy, char *keymap, char* shadowDisplayName, void **shadowDpy)
{
  logTrace("NXShadowCreate");

  Display *display = reinterpret_cast<Display*>(dpy);
  Display **shadowDisplay = reinterpret_cast<Display**>(shadowDpy);

/*  if (NXInitSignal() != 1)
  {
    logError("NXShadowCreate", EGET());

    return -1;
  }*/

  if (NXCreateInput(keymap, shadowDisplayName) != 1)
  {
    logError("NXShadowCreate", EGET());

    return -1;
  }

  if (NXCreatePoller(display, shadowDisplay) != 1)
  {
    logWarning("NXShadowCreate", "NXCreatePoller failed.");

    return -1;
  }

  if (NXCreateUpdateManager() != 1)
  {
    logError("NXShadowCreate", EGET());

    return -1;
  }

  return 1;
}

#if !defined(__CYGWIN32__) && !defined(WIN32)

void NXShadowSetDisplayUid(int uid)
{
  NXShadowOptions.optionShadowDisplayUid = uid;
}

void NXShadowDisableShm(void)
{
  logUser("NXShadowDisableShm: Disabling SHM.\n");

  NXShadowOptions.optionShmExtension = 0;
}

void NXShadowDisableDamage(void)
{
  NXShadowOptions.optionDamageExtension = 0;
}

void NXShadowGetScreenSize(int *w, int *h)
{
  poller -> getScreenSize(w, h);
}

void NXShadowSetScreenSize(int *w, int *h)
{
  poller -> setScreenSize(w, h);
}

#endif

void NXShadowDestroy()
{
  if (poller)
  {
    delete poller;

    poller = NULL;
  }

  if (updateManager)
  {
    delete updateManager;

    updateManager = NULL;
  }

  if (input)
  {
    delete input;

    input = NULL;
  }
}

void NXShadowHandleInput()
{
  logTrace("NXShadowHandleInput");

  if (NXShadowNotInitialized())
  {
    logError("NXShadowHandleInput - NXShadow not properly initialized.", ESET(EBADFD));

    return;
  }

  NXHandleException();

  updateManager -> handleInput();

  poller -> handleInput();
}

int NXShadowHasChanged(int (*callback)(void *), void *arg, int *suspended)
{
  int result;

  logTrace("NXShadowHasChanged");

  if (NXShadowNotInitialized())
  {
    logError("NXShadowHasChanged - NXShadow not properly initialized.", ESET(EBADFD));

    return -1;
  }

  //
  // FIXME
  //updateManager -> destroyUpdateManagerRegion();
  //

  updateManager -> newRegion();

#if !defined(__CYGWIN32__) && !defined(WIN32)
  poller -> getEvents();
#endif

  result = poller -> isChanged(callback, arg, suspended);

  if (result == 1)
  {
    updateManager -> addRegion(poller -> lastUpdatedRegion());

    return 1;
  }
  else if (result == -1)
  {
    logTest("NXShadowHasChanged", "Scanline error.");
    return -1;
  }

  return 0;
}

void NXShadowExportChanges(long *numRects, char **pBox)
{
  Region pReg;

  logTrace("NXShadowExportChanges");

  if (NXShadowNotInitialized())
  {
    logError("NXShadowExportChanges - NXShadow not properly initialized.", ESET(EBADFD));
  }

  updateManager -> update();
  pReg = updateManager -> getUpdateManagerRegion();
  *numRects = pReg -> numRects;
  *pBox = (char *)pReg -> rects;

  logTest("NXShadowExportChanges", "numRects [%ld] pBox[%p], pReg->numRects[%ld], rects[%p], size[%lu]",
              *numRects, *pBox, pReg -> numRects, &(pReg -> rects -> x2),
                  (unsigned long) sizeof(pReg -> rects -> x2));
}

void NXShadowEvent(Display *display, XEvent event)
{
  poller -> handleEvent(display, &event);
}

void NXShadowWebKeyEvent(KeySym keysym, Bool isKeyPress)
{
  poller -> handleWebKeyEvent(keysym, isKeyPress);
}

#ifdef __CYGWIN32__

int NXShadowCaptureCursor(unsigned int wnd, void *vis)
{
  Window window = (Window)wnd;
  Visual *visual = reinterpret_cast<Visual*>(vis);

  logTrace("NXShadowCaptureCursor");

  logTest("NXShadowCaptureCursor","Init");

  return poller -> updateCursor(window, visual);
}

#endif

void NXShadowUpdateBuffer(void **buffer)
{
  char **fBuffer = reinterpret_cast<char **>(buffer);

  if (*fBuffer != NULL)
  {
    poller -> destroyFrameBuffer();

    poller -> init();
  }

  *fBuffer = poller -> getFrameBuffer();

  logTest("NXShadowUpdateBuffer","New frame buffer [0x%p]", (void *)*fBuffer);
}

void NXShadowInitKeymap(void *keysyms)
{
  NXShadowKeymap = (KeySymsPtr) keysyms;

  logTest("NXShadowInitKeymap","KeySyms pointer [0x%p]", (void *)NXShadowKeymap);
}