mirror of https://github.com/encounter/SDL.git
82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#ifdef SDL_TIMER_N3DS
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#include <3ds.h>
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static SDL_bool ticks_started = SDL_FALSE;
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static u64 start_tick;
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#define NSEC_PER_MSEC 1000000ULL
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void
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SDL_TicksInit(void)
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{
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if (ticks_started) {
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return;
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}
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ticks_started = SDL_TRUE;
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start_tick = svcGetSystemTick();
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}
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void
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SDL_TicksQuit(void)
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{
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ticks_started = SDL_FALSE;
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}
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Uint64
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SDL_GetTicks64(void)
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{
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u64 elapsed;
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if (!ticks_started) {
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SDL_TicksInit();
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}
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elapsed = svcGetSystemTick() - start_tick;
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return elapsed / CPU_TICKS_PER_MSEC;
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}
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Uint64
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SDL_GetPerformanceCounter(void)
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{
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return svcGetSystemTick();
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}
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Uint64
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SDL_GetPerformanceFrequency(void)
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{
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return SYSCLOCK_ARM11;
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}
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void
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SDL_Delay(Uint32 ms)
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{
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svcSleepThread(ms * NSEC_PER_MSEC);
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}
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#endif /* SDL_TIMER_N3DS */
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/* vi: set sts=4 ts=4 sw=4 expandtab: */
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