diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/timer/amigaos/SDL_systimer.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/timer/amigaos/SDL_systimer.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.12/src/timer/amigaos/SDL_systimer.c b/distrib/sdl-1.2.12/src/timer/amigaos/SDL_systimer.c new file mode 100644 index 0000000..a213b61 --- /dev/null +++ b/distrib/sdl-1.2.12/src/timer/amigaos/SDL_systimer.c @@ -0,0 +1,267 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2006 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Sam Lantinga + slouken@libsdl.org +*/ +#include "SDL_config.h" + +#ifdef SDL_TIMER_AMIGA + +#include <stdio.h> +#include <time.h> +#include <signal.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <exec/types.h> +#ifdef __SASC +#include <proto/dos.h> +#include <clib/graphics_protos.h> +#include <pragmas/graphics.h> +#include <clib/exec_protos.h> +#include <pragmas/exec.h> +#elif defined(STORMC4_WOS) +#include <proto/dos.h> +#include <proto/exec.h> +#include <proto/graphics.h> +#else +#include <inline/dos.h> +#include <inline/exec.h> +#include <inline/graphics.h> +#endif +#include "mydebug.h" + +extern struct DosLibrary *DOSBase; +extern struct ExecBase *SysBase; +static struct GfxBase *GfxBase; + +#include "SDL_timer.h" +#include "../SDL_timer_c.h" + +/* The first ticks value of the application */ + +#if !defined(__PPC__) || defined(STORMC4_WOS) || defined(MORPHOS) +static clock_t start; + +void SDL_StartTicks(void) +{ + /* Set first ticks value */ + start=clock(); +} + +Uint32 SDL_GetTicks (void) +{ + clock_t ticks; + + ticks=clock()-start; + +#ifdef __SASC +// CLOCKS_PER_SEC == 1000 ! + + return(ticks); +#else +// CLOCKS_PER_SEC != 1000 ! + + return ticks*(1000/CLOCKS_PER_SEC); +#endif +} + +void SDL_Delay (Uint32 ms) +{ +// Do a busy wait if time is less than 50ms + + if(ms<50) + { + clock_t to_wait=clock(); + +#ifndef __SASC + ms*=(CLOCKS_PER_SEC/1000); +#endif + to_wait+=ms; + + while(clock()<to_wait); + } + else + { + Delay(ms/20); + } +} + +#else + +ULONG MY_CLOCKS_PER_SEC; + +void PPC_TimerInit(void); +APTR MyTimer; + +ULONG start[2]; + +void SDL_StartTicks(void) +{ + /* Set first ticks value */ + if(!MyTimer) + PPC_TimerInit(); + + PPCGetTimerObject(MyTimer,PPCTIMERTAG_CURRENTTICKS,start); + start[1]>>=10; + start[1]|=((result[0]&0x3ff)<<22); + start[0]>>=10; +} + +Uint32 SDL_GetTicks (void) +{ + ULONG result[2]; + PPCGetTimerObject(MyTimer,PPCTIMERTAG_CURRENTTICKS,result); + +// PPCAsr64p(result,10); +// Non va, la emulo: + + result[1]>>=10; + result[1]|=((result[0]&0x3ff)<<22); + +// Non mi interessa piu' result[0] + + return result[1]*1000/MY_CLOCKS_PER_SEC; +} + +void SDL_Delay (Uint32 ms) +{ +// Do a busy wait if time is less than 50ms + + if(ms<50) + { + ULONG to_wait[2],actual[2]; + PPCGetTimerObject(MyTimer,PPCTIMERTAG_CURRENTTICKS,result); + actual[1]=0; + to_wait[1]+=ms*1000/MY_CLOCKS_PER_SEC; + + while(actual[1]<to_wait[1]) + { + PPCGetTimerObject(MyTimer,PPCTIMERTAG_CURRENTTICKS,actual); + } + } + else + { + Delay(ms/50); + } +} + +void PPC_TimerInit(void) +{ + struct TagItem tags[]= + { + PPCTIMERTAG_CPU,TRUE, + TAG_DONE,0 + }; + + + if(MyTimer=PPCCreateTimerObject(tags)) + { + ULONG result[2]; + + PPCGetTimerObject(MyTimer,PPCTIMERTAG_TICKSPERSEC,result); + D(bug("Timer inizializzato, TPS: %lu - %lu\n",result[0],result[1])); +// PPCAsr64p(result,10); + result[1]>>=10; + result[1]|=((result[0]&0x3ff)<<22); + result[0]>>=10; + + D(bug("Shiftato TPS: %lu - %lu\n",result[0],result[1])); + MY_CLOCKS_PER_SEC=result[1]; + + PPCGetTimerObject(MyTimer,PPCTIMERTAG_CURRENTTICKS,result); + + D(bug("Current ticks: %lu - %lu\n",result[0],result[1])); + result[1]>>=10; + result[1]|=((result[0]&0x3ff)<<22); + result[0]>>=10; +// PPCAsr64p(result,10); + D(bug("Shiftato: %lu - %lu\n",result[0],result[1])); + } + else + { + D(bug("Errore nell'inizializzazione del timer!\n")); + } +} + +#endif + +#include "SDL_thread.h" + +/* Data to handle a single periodic alarm */ +static int timer_alive = 0; +static SDL_Thread *timer_thread = NULL; + +static int RunTimer(void *unused) +{ + D(bug("SYSTimer: Entering RunTimer loop...")); + + if(GfxBase==NULL) + GfxBase=(struct GfxBase *)OpenLibrary("graphics.library",37); + + while ( timer_alive ) { + if ( SDL_timer_running ) { + SDL_ThreadedTimerCheck(); + } + if(GfxBase) + WaitTOF(); // Check the timer every fifth of seconds. Was SDL_Delay(1)->BusyWait! + else + Delay(1); + } + D(bug("SYSTimer: EXITING RunTimer loop...")); + return(0); +} + +/* This is only called if the event thread is not running */ +int SDL_SYS_TimerInit(void) +{ + D(bug("Creating thread for the timer (NOITIMER)...\n")); + + timer_alive = 1; + timer_thread = SDL_CreateThread(RunTimer, NULL); + if ( timer_thread == NULL ) + { + D(bug("Creazione del thread fallita...\n")); + + return(-1); + } + return(SDL_SetTimerThreaded(1)); +} + +void SDL_SYS_TimerQuit(void) +{ + timer_alive = 0; + if ( timer_thread ) { + SDL_WaitThread(timer_thread, NULL); + timer_thread = NULL; + } +} + +int SDL_SYS_StartTimer(void) +{ + SDL_SetError("Internal logic error: AmigaOS uses threaded timer"); + return(-1); +} + +void SDL_SYS_StopTimer(void) +{ + return; +} + +#endif /* SDL_TIMER_AMIGA */ |