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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 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"
#include "SDL_syspower.h"
/*
* Returns true if we have a definitive answer.
* false to try next implementation.
*/
typedef bool (*SDL_GetPowerInfo_Impl)(SDL_PowerState *state, int *seconds,
int *percent);
#ifndef SDL_POWER_DISABLED
#ifdef SDL_POWER_HARDWIRED
// This is for things that _never_ have a battery
static bool SDL_GetPowerInfo_Hardwired(SDL_PowerState *state, int *seconds, int *percent)
{
*seconds = -1;
*percent = -1;
*state = SDL_POWERSTATE_NO_BATTERY;
return true;
}
#endif
static SDL_GetPowerInfo_Impl implementations[] = {
#ifdef SDL_POWER_LINUX // in order of preference. More than could work.
SDL_GetPowerInfo_Linux_org_freedesktop_upower,
SDL_GetPowerInfo_Linux_sys_class_power_supply,
SDL_GetPowerInfo_Linux_proc_acpi,
SDL_GetPowerInfo_Linux_proc_apm,
#endif
#ifdef SDL_POWER_WINDOWS // handles Win32, Win64, PocketPC.
SDL_GetPowerInfo_Windows,
#endif
#ifdef SDL_POWER_UIKIT // handles iPhone/iPad/etc
SDL_GetPowerInfo_UIKit,
#endif
#ifdef SDL_POWER_MACOSX // handles macOS, Darwin.
SDL_GetPowerInfo_MacOSX,
#endif
#ifdef SDL_POWER_HAIKU // with BeOS euc.jp apm driver. Does this work on Haiku?
SDL_GetPowerInfo_Haiku,
#endif
#ifdef SDL_POWER_ANDROID // handles Android.
SDL_GetPowerInfo_Android,
#endif
#ifdef SDL_POWER_PSP // handles PSP.
SDL_GetPowerInfo_PSP,
#endif
#ifdef SDL_POWER_VITA // handles PSVita.
SDL_GetPowerInfo_VITA,
#endif
#ifdef SDL_POWER_N3DS // handles N3DS.
SDL_GetPowerInfo_N3DS,
#endif
#ifdef SDL_POWER_EMSCRIPTEN // handles Emscripten
SDL_GetPowerInfo_Emscripten,
#endif
#ifdef SDL_POWER_HARDWIRED
SDL_GetPowerInfo_Hardwired,
#endif
};
#endif
SDL_PowerState SDL_GetPowerInfo(int *seconds, int *percent)
{
#ifndef SDL_POWER_DISABLED
const int total = sizeof(implementations) / sizeof(implementations[0]);
SDL_PowerState result = SDL_POWERSTATE_UNKNOWN;
int i;
#endif
int _seconds, _percent;
// Make these never NULL for platform-specific implementations.
if (!seconds) {
seconds = &_seconds;
}
if (!percent) {
percent = &_percent;
}
#ifndef SDL_POWER_DISABLED
for (i = 0; i < total; i++) {
if (implementations[i](&result, seconds, percent)) {
return result;
}
}
#endif
// nothing was definitive.
*seconds = -1;
*percent = -1;
return SDL_POWERSTATE_UNKNOWN;
}
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