SDL: src/power/SDL_power.c@25edf3df6e51

     1 /*

     2   Simple DirectMedia Layer

     3   Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>

     5   This software is provided 'as-is', without any express or implied

     6   warranty.  In no event will the authors be held liable for any damages

     7   arising from the use of this software.

     9   Permission is granted to anyone to use this software for any purpose,

    10   including commercial applications, and to alter it and redistribute it

    11   freely, subject to the following restrictions:

    13   1. The origin of this software must not be misrepresented; you must not

    14      claim that you wrote the original software. If you use this software

    15      in a product, an acknowledgment in the product documentation would be

    16      appreciated but is not required.

    17   2. Altered source versions must be plainly marked as such, and must not be

    18      misrepresented as being the original software.

    19   3. This notice may not be removed or altered from any source distribution.

    20 */

    21 #include "../SDL_internal.h"

    22 #include "SDL_power.h"

    23 #include "SDL_syspower.h"

    25 /*

    26  * Returns SDL_TRUE if we have a definitive answer.

    27  * SDL_FALSE to try next implementation.

    28  */

    29 typedef SDL_bool

    30     (*SDL_GetPowerInfo_Impl) (SDL_PowerState * state, int *seconds,

    31                               int *percent);

    33 #ifndef SDL_POWER_DISABLED

    34 #ifdef SDL_POWER_HARDWIRED

    35 /* This is for things that _never_ have a battery */

    36 static SDL_bool

    37 SDL_GetPowerInfo_Hardwired(SDL_PowerState * state, int *seconds, int *percent)

    38 {

    39     *seconds = -1;

    40     *percent = -1;

    41     *state = SDL_POWERSTATE_NO_BATTERY;

    42     return SDL_TRUE;

    43 }

    44 #endif

    46 static SDL_GetPowerInfo_Impl implementations[] = {

    47 #ifdef SDL_POWER_LINUX          /* in order of preference. More than could work. */

    48     SDL_GetPowerInfo_Linux_org_freedesktop_upower,

    49     SDL_GetPowerInfo_Linux_sys_class_power_supply,

    50     SDL_GetPowerInfo_Linux_proc_acpi,

    51     SDL_GetPowerInfo_Linux_proc_apm,

    52 #endif

    53 #ifdef SDL_POWER_WINDOWS        /* handles Win32, Win64, PocketPC. */

    54     SDL_GetPowerInfo_Windows,

    55 #endif

    56 #ifdef SDL_POWER_UIKIT          /* handles iPhone/iPad/etc */

    57     SDL_GetPowerInfo_UIKit,

    58 #endif

    59 #ifdef SDL_POWER_MACOSX         /* handles Mac OS X, Darwin. */

    60     SDL_GetPowerInfo_MacOSX,

    61 #endif

    62 #ifdef SDL_POWER_HAIKU          /* with BeOS euc.jp apm driver. Does this work on Haiku? */

    63     SDL_GetPowerInfo_Haiku,

    64 #endif

    65 #ifdef SDL_POWER_ANDROID        /* handles Android. */

    66     SDL_GetPowerInfo_Android,

    67 #endif

    68 #ifdef SDL_POWER_PSP        /* handles PSP. */

    69     SDL_GetPowerInfo_PSP,

    70 #endif

    71 #ifdef SDL_POWER_WINRT          /* handles WinRT */

    72     SDL_GetPowerInfo_WinRT,

    73 #endif

    74 #ifdef SDL_POWER_EMSCRIPTEN     /* handles Emscripten */

    75     SDL_GetPowerInfo_Emscripten,

    76 #endif

    78 #ifdef SDL_POWER_HARDWIRED

    79     SDL_GetPowerInfo_Hardwired,

    80 #endif

    81 };

    82 #endif

    84 SDL_PowerState

    85 SDL_GetPowerInfo(int *seconds, int *percent)

    86 {

    87 #ifndef SDL_POWER_DISABLED

    88     const int total = sizeof(implementations) / sizeof(implementations[0]);

    89     SDL_PowerState retval = SDL_POWERSTATE_UNKNOWN;

    90     int i;

    91 #endif

    93     int _seconds, _percent;

    94     /* Make these never NULL for platform-specific implementations. */

    95     if (seconds == NULL) {

    96         seconds = &_seconds;

    97     }

    98     if (percent == NULL) {

    99         percent = &_percent;

   100     }

   102 #ifndef SDL_POWER_DISABLED

   103     for (i = 0; i < total; i++) {

   104         if (implementations[i](&retval, seconds, percent)) {

   105             return retval;

   106         }

   107     }

   108 #endif

   110     /* nothing was definitive. */

   111     *seconds = -1;

   112     *percent = -1;

   113     return SDL_POWERSTATE_UNKNOWN;

   114 }

   116 /* vi: set ts=4 sw=4 expandtab: */

author	Ryan C. Gordon
	Tue, 07 Apr 2020 14:03:13 -0400
changeset 13704	25edf3df6e51
parent 13422	fd6a12de91c7
child 14640	b2b3343a310d
permissions	-rw-r--r--