| /* |
| SDL - Simple DirectMedia Layer |
| Copyright (C) 1997-2012 Sam Lantinga |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with this library; if not, write to the Free |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| |
| Sam Lantinga |
| slouken@devolution.com |
| */ |
| |
| /* |
| SDL_systimer.cpp |
| |
| Epoc version by Hannu Viitala (hannu.j.viitala@mbnet.fi) |
| Markus Mertama |
| */ |
| |
| #include <e32std.h> |
| #include <e32hal.h> |
| |
| extern "C" { |
| #include "SDL_error.h" |
| #include "SDL_thread.h" |
| #include "SDL_timer.h" |
| #include "SDL_timer_c.h" |
| |
| static TUint start = 0; |
| static TInt tickPeriodMilliSeconds; |
| |
| |
| void SDL_StartTicks(void) |
| { |
| /* Set first ticks value */ |
| start = User::TickCount(); |
| |
| TTimeIntervalMicroSeconds32 period; |
| TInt tmp = UserHal::TickPeriod(period); |
| tickPeriodMilliSeconds = period.Int() / 1000; |
| } |
| |
| Uint32 SDL_GetTicks(void) |
| { |
| TUint deltaTics = User::TickCount() - start; |
| return(deltaTics * tickPeriodMilliSeconds); |
| } |
| |
| void SDL_Delay(Uint32 ms) |
| { |
| User::After(TTimeIntervalMicroSeconds32(ms*1000)); |
| } |
| |
| /* Data to handle a single periodic alarm */ |
| static int timer_alive = 0; |
| static SDL_Thread *timer = NULL; |
| |
| static int RunTimer(void *unused) |
| { |
| while ( timer_alive ) |
| { |
| if (SDL_timer_running) |
| { |
| SDL_ThreadedTimerCheck(); |
| } |
| SDL_Delay(10); |
| } |
| return(0); |
| } |
| |
| /* This is only called if the event thread is not running */ |
| int SDL_SYS_TimerInit(void) |
| { |
| if(timer != NULL) |
| return (-1); |
| timer_alive = 1; |
| timer = SDL_CreateThread(RunTimer, NULL); |
| if ( timer == NULL ) |
| return(-1); |
| return(SDL_SetTimerThreaded(1)); |
| } |
| |
| void SDL_SYS_TimerQuit(void) |
| { |
| timer_alive = 0; |
| if ( timer ) |
| { |
| SDL_WaitThread(timer, NULL); |
| timer = NULL; |
| } |
| } |
| |
| int SDL_SYS_StartTimer(void) |
| { |
| SDL_SetError("Internal logic error: Epoc uses threaded timer"); |
| return(-1); |
| } |
| |
| void SDL_SYS_StopTimer(void) |
| { |
| return; |
| } |
| |
| } // extern "C" |