76d2bc3e7f
--HG-- extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%403810
108 lines
3.3 KiB
C
108 lines
3.3 KiB
C
/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#include "SDL_power.h"
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/*
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* Returns SDL_TRUE if we have a definitive answer.
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* SDL_FALSE to try next implementation.
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*/
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typedef SDL_bool
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(*SDL_GetPowerInfo_Impl) (SDL_PowerState * state, int *seconds,
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int *percent);
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SDL_bool SDL_GetPowerInfo_Linux_proc_acpi(SDL_PowerState *, int *, int *);
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SDL_bool SDL_GetPowerInfo_Linux_proc_apm(SDL_PowerState *, int *, int *);
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SDL_bool SDL_GetPowerInfo_Windows(SDL_PowerState *, int *, int *);
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SDL_bool SDL_GetPowerInfo_MacOSX(SDL_PowerState *, int *, int *);
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SDL_bool SDL_GetPowerInfo_BeOS(SDL_PowerState *, int *, int *);
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SDL_bool SDL_GetPowerInfo_NintendoDS(SDL_PowerState *, int *, int *);
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#ifndef SDL_POWER_DISABLED
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#ifdef SDL_POWER_HARDWIRED
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/* This is for things that _never_ have a battery, like the Dreamcast, etc. */
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static SDL_bool
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SDL_GetPowerInfo_Hardwired(SDL_PowerState * state, int *seconds, int *percent)
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{
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*seconds = -1;
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*percent = -1;
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*state = SDL_POWERSTATE_NO_BATTERY;
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return SDL_TRUE;
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}
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#endif
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#endif
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static SDL_GetPowerInfo_Impl implementations[] = {
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#ifndef SDL_POWER_DISABLED
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#ifdef SDL_POWER_LINUX /* in order of preference. More than could work. */
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SDL_GetPowerInfo_Linux_proc_acpi,
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SDL_GetPowerInfo_Linux_proc_apm,
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#endif
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#ifdef SDL_POWER_WINDOWS /* handles Win32, Win64, PocketPC. */
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SDL_GetPowerInfo_Windows,
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#endif
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#ifdef SDL_POWER_MACOSX /* handles Mac OS X, Darwin, iPhone. */
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SDL_GetPowerInfo_MacOSX,
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#endif
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#ifdef SDL_POWER_NINTENDODS /* handles Nintendo DS. */
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SDL_GetPowerInfo_NintendoDS,
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#endif
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#ifdef SDL_POWER_BEOS /* handles BeOS, Zeta, with euc.jp apm driver. */
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SDL_GetPowerInfo_BeOS,
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#endif
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#ifdef SDL_POWER_HARDWIRED
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SDL_GetPowerInfo_Hardwired,
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#endif
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#endif
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};
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SDL_PowerState
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SDL_GetPowerInfo(int *seconds, int *percent)
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{
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const int total = sizeof(implementations) / sizeof(implementations[0]);
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int _seconds, _percent;
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SDL_PowerState retval;
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int i;
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/* Make these never NULL for platform-specific implementations. */
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if (seconds == NULL) {
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seconds = &_seconds;
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}
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if (percent == NULL) {
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percent = &_percent;
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}
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for (i = 0; i < total; i++) {
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if (implementations[i] (&retval, seconds, percent)) {
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return retval;
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}
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}
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/* nothing was definitive. */
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*seconds = -1;
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*percent = -1;
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return SDL_POWERSTATE_UNKNOWN;
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}
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/* vi: set ts=4 sw=4 expandtab: */
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