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Initial work on power subsystem for SDL 1.3.
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Original file line number | Diff line number | Diff line change |
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/* | ||
SDL - Simple DirectMedia Layer | ||
Copyright (C) 1997-2009 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 | ||
*/ | ||
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#ifndef _SDL_power_h | ||
#define _SDL_power_h | ||
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/** | ||
* \file SDL_power.h | ||
* | ||
* Header for the SDL power management routines | ||
*/ | ||
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#include "SDL_stdinc.h" | ||
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#include "begin_code.h" | ||
/* Set up for C function definitions, even when using C++ */ | ||
#ifdef __cplusplus | ||
/* *INDENT-OFF* */ | ||
extern "C" { | ||
/* *INDENT-ON* */ | ||
#endif | ||
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/** | ||
* \enum SDL_PowerState | ||
* | ||
* \brief The basic state for the system's power supply. | ||
*/ | ||
typedef enum | ||
{ | ||
SDL_POWERSTATE_UNKNOWN, /**< cannot determine power status */ | ||
SDL_POWERSTATE_ON_BATTERY, /**< Not plugged in, running on the battery */ | ||
SDL_POWERSTATE_NO_BATTERY, /**< Plugged in, no battery available */ | ||
SDL_POWERSTATE_CHARGING, /**< Plugged in, charging battery */ | ||
SDL_POWERSTATE_CHARGED, /**< Plugged in, battery charged */ | ||
} SDL_PowerState; | ||
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/** | ||
* \fn int SDL_GetPowerInfo(void) | ||
* | ||
* \brief Get the current power supply details. | ||
* | ||
* \param secs Seconds of battery life left. You can pass a NULL here if | ||
* you don't care. Will return -1 if we can't determine a | ||
* value, or we're not running on a battery. | ||
* | ||
* \param pct Percentage of battery life left, between 0 and 100. You can | ||
* pass a NULL here if you don't care. Will return -1 if we | ||
* can't determine a value, or we're not running on a battery. | ||
* | ||
* \return The state of the battery (if any). | ||
*/ | ||
extern DECLSPEC SDL_PowerState SDLCALL SDL_GetPowerInfo(int *secs, int *pct); | ||
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/* Ends C function definitions when using C++ */ | ||
#ifdef __cplusplus | ||
/* *INDENT-OFF* */ | ||
} | ||
/* *INDENT-ON* */ | ||
#endif | ||
#include "close_code.h" | ||
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#endif /* _SDL_power_h */ | ||
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/* vi: set ts=4 sw=4 expandtab: */ |
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/* | ||
SDL - Simple DirectMedia Layer | ||
Copyright (C) 1997-2009 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" | ||
#include "SDL_power.h" | ||
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/* | ||
* Returns SDL_TRUE if we have a definitive answer. | ||
* SDL_FALSE to try next implementation. | ||
*/ | ||
typedef SDL_bool | ||
(*SDL_GetPowerInfo_Impl)(SDL_PowerState *state, int *seconds, int *percent); | ||
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SDL_bool SDL_GetPowerInfo_Linux_sys_power(SDL_PowerState*, int*, int*); | ||
SDL_bool SDL_GetPowerInfo_Linux_proc_apci(SDL_PowerState*, int*, int*); | ||
SDL_bool SDL_GetPowerInfo_Linux_proc_apm(SDL_PowerState*, int*, int*); | ||
SDL_bool SDL_GetPowerInfo_Windows(SDL_PowerState*, int*, int*); | ||
SDL_bool SDL_GetPowerInfo_MacOSX(SDL_PowerState*, int*, int*); | ||
SDL_bool SDL_GetPowerInfo_OS2(SDL_PowerState*, int*, int*); | ||
SDL_bool SDL_GetPowerInfo_NintendoDS(SDL_PowerState*, int*, int*); | ||
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#ifndef SDL_POWER_DISABLED | ||
#ifdef SDL_POWER_HARDWIRED | ||
/* This is for things that _never_ have a battery, like the Dreamcast, etc. */ | ||
static SDL_bool | ||
SDL_GetPowerInfo_Hardwired(SDL_PowerState *state, int *seconds, int *percent) | ||
{ | ||
*seconds = -1; | ||
*percent = -1; | ||
*state = SDL_POWERSTATE_NO_BATTERY; | ||
return SDL_TRUE; | ||
} | ||
#endif | ||
#endif | ||
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static SDL_GetPowerInfo_Impl implementations[] = { | ||
#ifndef SDL_POWER_DISABLED | ||
#ifdef SDL_POWER_LINUX /* in order of preference. More than could work. */ | ||
SDL_GetPowerInfo_Linux_sys_power, | ||
SDL_GetPowerInfo_Linux_proc_apci, | ||
SDL_GetPowerInfo_Linux_proc_apm, | ||
#endif | ||
#ifdef SDL_POWER_WINDOWS /* handles Win32, Win64, PocketPC. */ | ||
SDL_GetPowerInfo_Windows, | ||
#endif | ||
#ifdef SDL_POWER_MACOSX /* handles Mac OS X, Darwin, iPhone. */ | ||
SDL_GetPowerInfo_MacOSX, | ||
#endif | ||
#ifdef SDL_POWER_OS2 /* handles OS/2, Warp, eComStation. */ | ||
SDL_GetPowerInfo_OS2, | ||
#endif | ||
#ifdef SDL_POWER_NINTENDODS /* handles Nintendo DS. */ | ||
SDL_GetPowerInfo_NintendoDS, | ||
#endif | ||
#ifdef SDL_POWER_HARDWIRED | ||
SDL_GetPowerInfo_Hardwired, | ||
#endif | ||
#endif | ||
}; | ||
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SDL_PowerState | ||
SDL_GetPowerInfo(int *seconds, int *percent) | ||
{ | ||
const int total = sizeof (implementations) / sizeof (implementations[0]); | ||
int _seconds, _percent; | ||
SDL_PowerState retval; | ||
int i; | ||
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/* Make these never NULL for platform-specific implementations. */ | ||
if (seconds == NULL) { | ||
seconds = &_seconds; | ||
} | ||
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if (percent == NULL) { | ||
percent = &_percent; | ||
} | ||
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for (i = 0; i < total; i++) { | ||
if (implementations[i](&retval, seconds, percent)) { | ||
return retval; | ||
} | ||
} | ||
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/* nothing was definitive. */ | ||
*seconds = -1; | ||
*percent = -1; | ||
return SDL_POWERSTATE_UNKNOWN; | ||
} | ||
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/* vi: set ts=4 sw=4 expandtab: */ | ||
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