kc3-lang/SDL/src/timer/ngage/SDL_systimer.cpp

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• Hash : fbd230bb
  Author :
  Date : 2022-05-03T17:51:49
  

  Add support for the Nokia N-Gage (#5597) * Add initial support for the Nokia N-Gage * N-Gage: disable clipping for the time being, issue needs to be resolved later * Move va_copy definition to SDL_internal.h * Move stdlib.h include to SDL_config_ngage.h, much cleaner this way * Remove redundant include, add HAVE_STDLIB_H * Revert "N-Gage: disable clipping for the time being, issue needs to be resolved later" This reverts commit 4f5f0fc36cc7f34fad05e45671dfa7b8dc32fd51. * N-Gage: fix clipping issue by providing proper math functions

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• src/timer/ngage/SDL_systimer.cpp

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely, subject to the following restrictions:
  
    1. The origin of this software must not be misrepresented; you must not
       claim that you wrote the original software. If you use this software
       in a product, an acknowledgment in the product documentation would be
       appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be
       misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.
  */
  #include "../../SDL_internal.h"
  
  #if defined(SDL_TIMER_NGAGE)
  
  #include <e32std.h>
  #include <e32hal.h>
  
  #include "SDL_timer.h"
  
  static SDL_bool ticks_started = SDL_FALSE;
  static TUint    start         = 0;
  static TInt     tickPeriodMilliSeconds;
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  void
  SDL_TicksInit(void)
  {
      if (ticks_started)
      {
          return;
      }
      ticks_started = SDL_TRUE;
      start         = User::TickCount();
  
      TTimeIntervalMicroSeconds32 period;
      TInt                        tmp = UserHal::TickPeriod(period);
  
      (void)tmp; /* Suppress redundant warning. */
  
      tickPeriodMilliSeconds = period.Int() / 1000;
  }
  
  void
  SDL_TicksQuit(void)
  {
      ticks_started = SDL_FALSE;
  }
  
  Uint64
  SDL_GetTicks64(void)
  {
      if (! ticks_started)
      {
          SDL_TicksInit();
      }
  
      TUint deltaTics = User::TickCount() - start;
  
      // Overlaps early, but should do the trick for now.
      return (Uint64)(deltaTics * tickPeriodMilliSeconds);
  }
  
  Uint64
  SDL_GetPerformanceCounter(void)
  {
      return (Uint64)User::TickCount();
  }
  
  Uint64
  SDL_GetPerformanceFrequency(void)
  {
      return 1000000;
  }
  
  void
  SDL_Delay(Uint32 ms)
  {
      User::After(TTimeIntervalMicroSeconds32(ms * 1000));
  }
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* SDL_TIMER_NGAGE */
  
  /* vi: set ts=4 sw=4 expandtab: */
  

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