sys_win.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // sys_win.c -- Win32 system interface code
  21
  22 #include "quakedef.h"
  23 #include <windows.h>
  24 #include <mmsystem.h>
  25 #ifdef SUPPORTDIRECTX
  26 #include <dsound.h>
  27 #endif
  28 #include "errno.h"
  29 #include "resource.h"
  30 #include "conproc.h"
  31 #include "direct.h"
  32
  33 cvar_t sys_usetimegettime = {CVAR_SAVE, "sys_usetimegettime", "1", "use windows timeGetTime function (which has issues on some motherboards) for timing rather than QueryPerformanceCounter timer (which has issues on multicore/multiprocessor machines and processors which are designed to conserve power)"};
  34
  35 HANDLE                          hinput, houtput;
  36
  37 #ifdef QHOST
  38 static HANDLE   tevent;
  39 static HANDLE   hFile;
  40 static HANDLE   heventParent;
  41 static HANDLE   heventChild;
  42 #endif
  43
  44
  45 /*
  46 ===============================================================================
  47
  48 SYSTEM IO
  49
  50 ===============================================================================
  51 */
  52
  53 void Sys_Error (const char *error, ...)
  54 {
  55         va_list         argptr;
  56         char            text[MAX_INPUTLINE];
  57         static int      in_sys_error0 = 0;
  58         static int      in_sys_error1 = 0;
  59         static int      in_sys_error2 = 0;
  60         static int      in_sys_error3 = 0;
  61
  62         va_start (argptr, error);
  63         dpvsnprintf (text, sizeof (text), error, argptr);
  64         va_end (argptr);
  65
  66         Con_Printf ("Quake Error: %s\n", text);
  67
  68         // close video so the message box is visible, unless we already tried that
  69         if (!in_sys_error0 && cls.state != ca_dedicated)
  70         {
  71                 in_sys_error0 = 1;
  72                 VID_Shutdown();
  73         }
  74
  75         if (!in_sys_error3 && cls.state != ca_dedicated)
  76         {
  77                 in_sys_error3 = true;
  78                 MessageBox(NULL, text, "Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
  79         }
  80
  81         if (!in_sys_error1)
  82         {
  83                 in_sys_error1 = 1;
  84                 Host_Shutdown ();
  85         }
  86
  87 // shut down QHOST hooks if necessary
  88         if (!in_sys_error2)
  89         {
  90                 in_sys_error2 = 1;
  91                 Sys_Shutdown ();
  92         }
  93
  94         exit (1);
  95 }
  96
  97 void Sys_Shutdown (void)
  98 {
  99 #ifdef QHOST
 100         if (tevent)
 101                 CloseHandle (tevent);
 102 #endif
 103
 104         if (cls.state == ca_dedicated)
 105                 FreeConsole ();
 106
 107 #ifdef QHOST
 108 // shut down QHOST hooks if necessary
 109         DeinitConProc ();
 110 #endif
 111 }
 112
 113 void Sys_PrintToTerminal(const char *text)
 114 {
 115         DWORD dummy;
 116         extern HANDLE houtput;
 117
 118         if ((houtput != 0) && (houtput != INVALID_HANDLE_VALUE))
 119                 WriteFile(houtput, text, (DWORD) strlen(text), &dummy, NULL);
 120 }
 121
 122 /*
 123 ================
 124 Sys_DoubleTime
 125 ================
 126 */
 127 double Sys_DoubleTime (void)
 128 {
 129         static int first = true;
 130         static double oldtime = 0.0, curtime = 0.0;
 131         double newtime;
 132         // LordHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
 133         if (sys_usetimegettime.integer)
 134         {
 135                 static int firsttimegettime = true;
 136                 // timeGetTime
 137                 // platform:
 138                 // Windows 95/98/ME/NT/2000/XP
 139                 // features:
 140                 // reasonable accuracy (millisecond)
 141                 // issues:
 142                 // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
 143
 144                 // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
 145                 if (firsttimegettime)
 146                 {
 147                         timeBeginPeriod (1);
 148                         firsttimegettime = false;
 149                 }
 150
 151                 newtime = (double) timeGetTime () / 1000.0;
 152         }
 153         else
 154         {
 155                 // QueryPerformanceCounter
 156                 // platform:
 157                 // Windows 95/98/ME/NT/2000/XP
 158                 // features:
 159                 // very accurate (CPU cycles)
 160                 // known issues:
 161                 // does not necessarily match realtime too well (tends to get faster and faster in win98)
 162                 // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
 163                 double timescale;
 164                 LARGE_INTEGER PerformanceFreq;
 165                 LARGE_INTEGER PerformanceCount;
 166
 167                 if (!QueryPerformanceFrequency (&PerformanceFreq))
 168                 {
 169                         Con_Printf ("No hardware timer available\n");
 170                         // fall back to timeGetTime
 171                         Cvar_SetValueQuick(&sys_usetimegettime, true);
 172                         return Sys_DoubleTime();
 173                 }
 174                 QueryPerformanceCounter (&PerformanceCount);
 175
 176                 #ifdef __BORLANDC__
 177                 timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
 178                 newtime = ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale;
 179                 #else
 180                 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
 181                 newtime = ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
 182                 #endif
 183         }
 184
 185         if (first)
 186         {
 187                 first = false;
 188                 oldtime = newtime;
 189         }
 190
 191         if (newtime < oldtime)
 192         {
 193                 // warn if it's significant
 194                 if (newtime - oldtime < -0.01)
 195                         Con_Printf("Sys_DoubleTime: time stepped backwards (went from %f to %f, difference %f)\n", oldtime, newtime, newtime - oldtime);
 196         }
 197         else if (newtime > oldtime + 1800)
 198         {
 199                 Con_Printf("Sys_DoubleTime: time stepped forward (went from %f to %f, difference %f)\n", oldtime, newtime, newtime - oldtime);
 200         }
 201         else
 202                 curtime += newtime - oldtime;
 203         oldtime = newtime;
 204
 205         return curtime;
 206 }
 207
 208
 209 char *Sys_ConsoleInput (void)
 210 {
 211         static char text[MAX_INPUTLINE];
 212         static int len;
 213         INPUT_RECORD recs[1024];
 214         int ch;
 215         DWORD numread, numevents, dummy;
 216
 217         if (cls.state != ca_dedicated)
 218                 return NULL;
 219
 220         for ( ;; )
 221         {
 222                 if (!GetNumberOfConsoleInputEvents (hinput, &numevents))
 223                 {
 224                         cls.state = ca_disconnected;
 225                         Sys_Error ("Error getting # of console events (error code %x)", (unsigned int)GetLastError());
 226                 }
 227
 228                 if (numevents <= 0)
 229                         break;
 230
 231                 if (!ReadConsoleInput(hinput, recs, 1, &numread))
 232                 {
 233                         cls.state = ca_disconnected;
 234                         Sys_Error ("Error reading console input (error code %x)", (unsigned int)GetLastError());
 235                 }
 236
 237                 if (numread != 1)
 238                 {
 239                         cls.state = ca_disconnected;
 240                         Sys_Error ("Couldn't read console input (error code %x)", (unsigned int)GetLastError());
 241                 }
 242
 243                 if (recs[0].EventType == KEY_EVENT)
 244                 {
 245                         if (!recs[0].Event.KeyEvent.bKeyDown)
 246                         {
 247                                 ch = recs[0].Event.KeyEvent.uChar.AsciiChar;
 248
 249                                 switch (ch)
 250                                 {
 251                                         case '\r':
 252                                                 WriteFile(houtput, "\r\n", 2, &dummy, NULL);
 253
 254                                                 if (len)
 255                                                 {
 256                                                         text[len] = 0;
 257                                                         len = 0;
 258                                                         return text;
 259                                                 }
 260
 261                                                 break;
 262
 263                                         case '\b':
 264                                                 WriteFile(houtput, "\b \b", 3, &dummy, NULL);
 265                                                 if (len)
 266                                                 {
 267                                                         len--;
 268                                                 }
 269                                                 break;
 270
 271                                         default:
 272                                                 if (ch >= (int) (unsigned char) ' ')
 273                                                 {
 274                                                         WriteFile(houtput, &ch, 1, &dummy, NULL);
 275                                                         text[len] = ch;
 276                                                         len = (len + 1) & 0xff;
 277                                                 }
 278
 279                                                 break;
 280
 281                                 }
 282                         }
 283                 }
 284         }
 285
 286         return NULL;
 287 }
 288
 289 void Sys_Sleep(int microseconds)
 290 {
 291         Sleep(microseconds / 1000);
 292 }
 293
 294 char *Sys_GetClipboardData (void)
 295 {
 296         char *data = NULL;
 297         char *cliptext;
 298
 299         if (OpenClipboard (NULL) != 0)
 300         {
 301                 HANDLE hClipboardData;
 302
 303                 if ((hClipboardData = GetClipboardData (CF_TEXT)) != 0)
 304                 {
 305                         if ((cliptext = GlobalLock (hClipboardData)) != 0)
 306                         {
 307                                 size_t allocsize;
 308                                 allocsize = GlobalSize (hClipboardData) + 1;
 309                                 data = Z_Malloc (allocsize);
 310                                 strlcpy (data, cliptext, allocsize);
 311                                 GlobalUnlock (hClipboardData);
 312                         }
 313                 }
 314                 CloseClipboard ();
 315         }
 316         return data;
 317 }
 318
 319 void Sys_InitConsole (void)
 320 {
 321 #ifdef QHOST
 322         int t;
 323
 324         // initialize the windows dedicated server console if needed
 325         tevent = CreateEvent(NULL, false, false, NULL);
 326
 327         if (!tevent)
 328                 Sys_Error ("Couldn't create event");
 329 #endif
 330
 331         houtput = GetStdHandle (STD_OUTPUT_HANDLE);
 332         hinput = GetStdHandle (STD_INPUT_HANDLE);
 333
 334         // LordHavoc: can't check cls.state because it hasn't been initialized yet
 335         // if (cls.state == ca_dedicated)
 336         if (COM_CheckParm("-dedicated"))
 337         {
 338                 //if ((houtput == 0) || (houtput == INVALID_HANDLE_VALUE)) // LordHavoc: on Windows XP this is never 0 or invalid, but hinput is invalid
 339                 {
 340                         if (!AllocConsole ())
 341                                 Sys_Error ("Couldn't create dedicated server console (error code %x)", (unsigned int)GetLastError());
 342                         houtput = GetStdHandle (STD_OUTPUT_HANDLE);
 343                         hinput = GetStdHandle (STD_INPUT_HANDLE);
 344                 }
 345                 if ((houtput == 0) || (houtput == INVALID_HANDLE_VALUE))
 346                         Sys_Error ("Couldn't create dedicated server console");
 347
 348
 349 #ifdef QHOST
 350 #ifdef _WIN64
 351 #define atoi _atoi64
 352 #endif
 353         // give QHOST a chance to hook into the console
 354                 if ((t = COM_CheckParm ("-HFILE")) > 0)
 355                 {
 356                         if (t < com_argc)
 357                                 hFile = (HANDLE)atoi (com_argv[t+1]);
 358                 }
 359
 360                 if ((t = COM_CheckParm ("-HPARENT")) > 0)
 361                 {
 362                         if (t < com_argc)
 363                                 heventParent = (HANDLE)atoi (com_argv[t+1]);
 364                 }
 365
 366                 if ((t = COM_CheckParm ("-HCHILD")) > 0)
 367                 {
 368                         if (t < com_argc)
 369                                 heventChild = (HANDLE)atoi (com_argv[t+1]);
 370                 }
 371
 372                 InitConProc (hFile, heventParent, heventChild);
 373 #endif
 374         }
 375
 376 // because sound is off until we become active
 377         S_BlockSound ();
 378 }
 379
 380 void Sys_Init_Commands (void)
 381 {
 382         Cvar_RegisterVariable(&sys_usetimegettime);
 383 }
 384
 385 /*
 386 ==============================================================================
 387
 388 WINDOWS CRAP
 389
 390 ==============================================================================
 391 */
 392
 393
 394 /*
 395 ==================
 396 WinMain
 397 ==================
 398 */
 399 HINSTANCE       global_hInstance;
 400 const char      *argv[MAX_NUM_ARGVS];
 401 char            program_name[MAX_OSPATH];
 402
 403 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
 404 {
 405         MEMORYSTATUS lpBuffer;
 406
 407         /* previous instances do not exist in Win32 */
 408         if (hPrevInstance)
 409                 return 0;
 410
 411         global_hInstance = hInstance;
 412
 413         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
 414         GlobalMemoryStatus (&lpBuffer);
 415
 416         program_name[sizeof(program_name)-1] = 0;
 417         GetModuleFileNameA(NULL, program_name, sizeof(program_name) - 1);
 418
 419         com_argc = 1;
 420         com_argv = argv;
 421         argv[0] = program_name;
 422
 423         // FIXME: this tokenizer is rather redundent, call a more general one
 424         while (*lpCmdLine && (com_argc < MAX_NUM_ARGVS))
 425         {
 426                 while (*lpCmdLine && ISWHITESPACE(*lpCmdLine))
 427                         lpCmdLine++;
 428
 429                 if (!*lpCmdLine)
 430                         break;
 431
 432                 if (*lpCmdLine == '\"')
 433                 {
 434                         // quoted string
 435                         lpCmdLine++;
 436                         argv[com_argc] = lpCmdLine;
 437                         com_argc++;
 438                         while (*lpCmdLine && (*lpCmdLine != '\"'))
 439                                 lpCmdLine++;
 440                 }
 441                 else
 442                 {
 443                         // unquoted word
 444                         argv[com_argc] = lpCmdLine;
 445                         com_argc++;
 446                         while (*lpCmdLine && !ISWHITESPACE(*lpCmdLine))
 447                                 lpCmdLine++;
 448                 }
 449
 450                 if (*lpCmdLine)
 451                 {
 452                         *lpCmdLine = 0;
 453                         lpCmdLine++;
 454                 }
 455         }
 456
 457         Host_Main();
 458
 459         /* return success of application */
 460         return true;
 461 }
 462
 463 #if 0
 464 // unused, this file is only used when building windows client and vid_wgl provides WinMain() instead
 465 int main (int argc, const char* argv[])
 466 {
 467         MEMORYSTATUS lpBuffer;
 468
 469         global_hInstance = GetModuleHandle (0);
 470
 471         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
 472         GlobalMemoryStatus (&lpBuffer);
 473
 474         program_name[sizeof(program_name)-1] = 0;
 475         GetModuleFileNameA(NULL, program_name, sizeof(program_name) - 1);
 476
 477         com_argc = argc;
 478         com_argv = argv;
 479
 480         Host_Main();
 481
 482         return true;
 483 }
 484 #endif
 485