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wf_info.c
1
20#include <freerdp/config.h>
21
22#include <stdlib.h>
23
24#include <freerdp/build-config.h>
25
26#include <winpr/tchar.h>
27#include <winpr/windows.h>
28
29#include "wf_info.h"
30#include "wf_update.h"
31#include "wf_mirage.h"
32#include "wf_dxgi.h"
33
34#include <freerdp/log.h>
35#define TAG SERVER_TAG("windows")
36
37#define SERVER_KEY "Software\\" FREERDP_VENDOR_STRING "\\" FREERDP_PRODUCT_STRING "\\Server"
38
39static wfInfo* wfInfoInstance = NULL;
40static int _IDcount = 0;
41
42BOOL wf_info_lock(wfInfo* wfi)
43{
44 DWORD dRes;
45 dRes = WaitForSingleObject(wfi->mutex, INFINITE);
46
47 switch (dRes)
48 {
49 case WAIT_ABANDONED:
50 case WAIT_OBJECT_0:
51 return TRUE;
52
53 case WAIT_TIMEOUT:
54 return FALSE;
55
56 case WAIT_FAILED:
57 WLog_ERR(TAG, "wf_info_lock failed with 0x%08lX", GetLastError());
58 return FALSE;
59 }
60
61 return FALSE;
62}
63
64BOOL wf_info_try_lock(wfInfo* wfi, DWORD dwMilliseconds)
65{
66 DWORD dRes;
67 dRes = WaitForSingleObject(wfi->mutex, dwMilliseconds);
68
69 switch (dRes)
70 {
71 case WAIT_ABANDONED:
72 case WAIT_OBJECT_0:
73 return TRUE;
74
75 case WAIT_TIMEOUT:
76 return FALSE;
77
78 case WAIT_FAILED:
79 WLog_ERR(TAG, "wf_info_try_lock failed with 0x%08lX", GetLastError());
80 return FALSE;
81 }
82
83 return FALSE;
84}
85
86BOOL wf_info_unlock(wfInfo* wfi)
87{
88 if (!ReleaseMutex(wfi->mutex))
89 {
90 WLog_ERR(TAG, "wf_info_unlock failed with 0x%08lX", GetLastError());
91 return FALSE;
92 }
93
94 return TRUE;
95}
96
97wfInfo* wf_info_init()
98{
99 wfInfo* wfi;
100 wfi = (wfInfo*)calloc(1, sizeof(wfInfo));
101
102 if (wfi != NULL)
103 {
104 HKEY hKey;
105 LONG status;
106 DWORD dwType;
107 DWORD dwSize;
108 DWORD dwValue;
109 wfi->mutex = CreateMutex(NULL, FALSE, NULL);
110
111 if (wfi->mutex == NULL)
112 {
113 WLog_ERR(TAG, "CreateMutex error: %lu", GetLastError());
114 free(wfi);
115 return NULL;
116 }
117
118 wfi->updateSemaphore = CreateSemaphore(NULL, 0, 32, NULL);
119
120 if (!wfi->updateSemaphore)
121 {
122 WLog_ERR(TAG, "CreateSemaphore error: %lu", GetLastError());
123 (void)CloseHandle(wfi->mutex);
124 free(wfi);
125 return NULL;
126 }
127
128 wfi->updateThread = CreateThread(NULL, 0, wf_update_thread, wfi, CREATE_SUSPENDED, NULL);
129
130 if (!wfi->updateThread)
131 {
132 WLog_ERR(TAG, "Failed to create update thread");
133 (void)CloseHandle(wfi->mutex);
134 (void)CloseHandle(wfi->updateSemaphore);
135 free(wfi);
136 return NULL;
137 }
138
139 wfi->peers =
140 (freerdp_peer**)calloc(FREERDP_SERVER_WIN_INFO_MAXPEERS, sizeof(freerdp_peer*));
141
142 if (!wfi->peers)
143 {
144 WLog_ERR(TAG, "Failed to allocate memory for peer");
145 (void)CloseHandle(wfi->mutex);
146 (void)CloseHandle(wfi->updateSemaphore);
147 (void)CloseHandle(wfi->updateThread);
148 free(wfi);
149 return NULL;
150 }
151
152 // Set FPS
153 wfi->framesPerSecond = FREERDP_SERVER_WIN_INFO_DEFAULT_FPS;
154 status =
155 RegOpenKeyExA(HKEY_LOCAL_MACHINE, SERVER_KEY, 0, KEY_READ | KEY_WOW64_64KEY, &hKey);
156
157 if (status == ERROR_SUCCESS)
158 {
159 if (RegQueryValueEx(hKey, _T("FramesPerSecond"), NULL, &dwType, (BYTE*)&dwValue,
160 &dwSize) == ERROR_SUCCESS)
161 wfi->framesPerSecond = dwValue;
162 }
163
164 RegCloseKey(hKey);
165 // Set input toggle
166 wfi->input_disabled = FALSE;
167 status =
168 RegOpenKeyExA(HKEY_LOCAL_MACHINE, SERVER_KEY, 0, KEY_READ | KEY_WOW64_64KEY, &hKey);
169
170 if (status == ERROR_SUCCESS)
171 {
172 if (RegQueryValueEx(hKey, _T("DisableInput"), NULL, &dwType, (BYTE*)&dwValue,
173 &dwSize) == ERROR_SUCCESS)
174 {
175 if (dwValue != 0)
176 wfi->input_disabled = TRUE;
177 }
178 }
179
180 RegCloseKey(hKey);
181 }
182
183 return wfi;
184}
185
186wfInfo* wf_info_get_instance()
187{
188 if (wfInfoInstance == NULL)
189 wfInfoInstance = wf_info_init();
190
191 return wfInfoInstance;
192}
193
194BOOL wf_info_peer_register(wfInfo* wfi, wfPeerContext* context)
195{
196 int peerId = 0;
197
198 if (!wfi || !context)
199 return FALSE;
200
201 if (!wf_info_lock(wfi))
202 return FALSE;
203
204 if (wfi->peerCount == FREERDP_SERVER_WIN_INFO_MAXPEERS)
205 goto fail_peer_count;
206
207 context->info = wfi;
208
209 if (!(context->updateEvent = CreateEvent(NULL, TRUE, FALSE, NULL)))
210 goto fail_update_event;
211
212 // get the offset of the top left corner of selected screen
213 EnumDisplayMonitors(NULL, NULL, wf_info_monEnumCB, 0);
214 _IDcount = 0;
215#ifdef WITH_DXGI_1_2
216
217 if (wfi->peerCount == 0)
218 if (wf_dxgi_init(wfi) != 0)
219 goto fail_driver_init;
220
221#else
222
223 if (!wf_mirror_driver_activate(wfi))
224 goto fail_driver_init;
225
226#endif
227
228 // look through the array of peers until an empty slot
229 for (int i = 0; i < FREERDP_SERVER_WIN_INFO_MAXPEERS; ++i)
230 {
231 // empty index will be our peer id
232 if (wfi->peers[i] == NULL)
233 {
234 peerId = i;
235 break;
236 }
237 }
238
239 wfi->peers[peerId] = ((rdpContext*)context)->peer;
240 wfi->peers[peerId]->pId = peerId;
241 wfi->peerCount++;
242 WLog_INFO(TAG, "Registering Peer: id=%d #=%d", peerId, wfi->peerCount);
243 wf_info_unlock(wfi);
244 wfreerdp_server_peer_callback_event(peerId, FREERDP_SERVER_WIN_SRV_CALLBACK_EVENT_CONNECT);
245 return TRUE;
246fail_driver_init:
247 (void)CloseHandle(context->updateEvent);
248 context->updateEvent = NULL;
249fail_update_event:
250fail_peer_count:
251 context->socketClose = TRUE;
252 wf_info_unlock(wfi);
253 return FALSE;
254}
255
256void wf_info_peer_unregister(wfInfo* wfi, wfPeerContext* context)
257{
258 if (wf_info_lock(wfi))
259 {
260 int peerId;
261 peerId = ((rdpContext*)context)->peer->pId;
262 wfi->peers[peerId] = NULL;
263 wfi->peerCount--;
264 (void)CloseHandle(context->updateEvent);
265 WLog_INFO(TAG, "Unregistering Peer: id=%d, #=%d", peerId, wfi->peerCount);
266#ifdef WITH_DXGI_1_2
267
268 if (wfi->peerCount == 0)
269 wf_dxgi_cleanup(wfi);
270
271#endif
272 wf_info_unlock(wfi);
273 wfreerdp_server_peer_callback_event(peerId,
274 FREERDP_SERVER_WIN_SRV_CALLBACK_EVENT_DISCONNECT);
275 }
276}
277
278BOOL wf_info_have_updates(wfInfo* wfi)
279{
280#ifdef WITH_DXGI_1_2
281
282 if (wfi->framesWaiting == 0)
283 return FALSE;
284
285#else
286
287 if (wfi->nextUpdate == wfi->lastUpdate)
288 return FALSE;
289
290#endif
291 return TRUE;
292}
293
294void wf_info_update_changes(wfInfo* wfi)
295{
296#ifdef WITH_DXGI_1_2
297 wf_dxgi_nextFrame(wfi, wfi->framesPerSecond * 1000);
298#else
299 GETCHANGESBUF* buf;
300 buf = (GETCHANGESBUF*)wfi->changeBuffer;
301 wfi->nextUpdate = buf->buffer->counter;
302#endif
303}
304
305void wf_info_find_invalid_region(wfInfo* wfi)
306{
307#ifdef WITH_DXGI_1_2
308 wf_dxgi_getInvalidRegion(&wfi->invalid);
309#else
310 GETCHANGESBUF* buf;
311 buf = (GETCHANGESBUF*)wfi->changeBuffer;
312
313 for (ULONG i = wfi->lastUpdate; i != wfi->nextUpdate; i = (i + 1) % MAXCHANGES_BUF)
314 {
315 LPRECT lpR = &buf->buffer->pointrect[i].rect;
316
317 // need to make sure we only get updates from the selected screen
318 if ((lpR->left >= wfi->servscreen_xoffset) &&
319 (lpR->right <= (wfi->servscreen_xoffset + wfi->servscreen_width)) &&
320 (lpR->top >= wfi->servscreen_yoffset) &&
321 (lpR->bottom <= (wfi->servscreen_yoffset + wfi->servscreen_height)))
322 {
323 UnionRect(&wfi->invalid, &wfi->invalid, lpR);
324 }
325 else
326 {
327 continue;
328 }
329 }
330
331#endif
332
333 if (wfi->invalid.left < 0)
334 wfi->invalid.left = 0;
335
336 if (wfi->invalid.top < 0)
337 wfi->invalid.top = 0;
338
339 if (wfi->invalid.right >= wfi->servscreen_width)
340 wfi->invalid.right = wfi->servscreen_width - 1;
341
342 if (wfi->invalid.bottom >= wfi->servscreen_height)
343 wfi->invalid.bottom = wfi->servscreen_height - 1;
344
345 // WLog_DBG(TAG, "invalid region: (%"PRId32", %"PRId32"), (%"PRId32", %"PRId32")",
346 // wfi->invalid.left, wfi->invalid.top, wfi->invalid.right, wfi->invalid.bottom);
347}
348
349void wf_info_clear_invalid_region(wfInfo* wfi)
350{
351 wfi->lastUpdate = wfi->nextUpdate;
352 SetRectEmpty(&wfi->invalid);
353}
354
355void wf_info_invalidate_full_screen(wfInfo* wfi)
356{
357 SetRect(&wfi->invalid, 0, 0, wfi->servscreen_width, wfi->servscreen_height);
358}
359
360BOOL wf_info_have_invalid_region(wfInfo* wfi)
361{
362 return IsRectEmpty(&wfi->invalid);
363}
364
365void wf_info_getScreenData(wfInfo* wfi, long* width, long* height, BYTE** pBits, int* pitch)
366{
367 *width = (wfi->invalid.right - wfi->invalid.left);
368 *height = (wfi->invalid.bottom - wfi->invalid.top);
369#ifdef WITH_DXGI_1_2
370 wf_dxgi_getPixelData(wfi, pBits, pitch, &wfi->invalid);
371#else
372 {
373 long offset;
374 GETCHANGESBUF* changes;
375 changes = (GETCHANGESBUF*)wfi->changeBuffer;
376 *width += 1;
377 *height += 1;
378 offset = (4 * wfi->invalid.left) + (wfi->invalid.top * wfi->virtscreen_width * 4);
379 *pBits = ((BYTE*)(changes->Userbuffer)) + offset;
380 *pitch = wfi->virtscreen_width * 4;
381 }
382#endif
383}
384
385BOOL CALLBACK wf_info_monEnumCB(HMONITOR hMonitor, HDC hdcMonitor, LPRECT lprcMonitor,
386 LPARAM dwData)
387{
388 wfInfo* wfi;
389 wfi = wf_info_get_instance();
390
391 if (!wfi)
392 return FALSE;
393
394 if (_IDcount == wfi->screenID)
395 {
396 wfi->servscreen_xoffset = lprcMonitor->left;
397 wfi->servscreen_yoffset = lprcMonitor->top;
398 }
399
400 _IDcount++;
401 return TRUE;
402}