SDL 2.0
SDL_power.c
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1/*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
4
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.
8
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:
12
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"
24
25/*
26 * Returns SDL_TRUE if we have a definitive answer.
27 * SDL_FALSE to try next implementation.
28 */
29typedef SDL_bool
30 (*SDL_GetPowerInfo_Impl) (SDL_PowerState * state, int *seconds,
31 int *percent);
32
33#ifndef SDL_POWER_DISABLED
34#ifdef SDL_POWER_HARDWIRED
35/* This is for things that _never_ have a battery */
36static SDL_bool
37SDL_GetPowerInfo_Hardwired(SDL_PowerState * state, int *seconds, int *percent)
38{
39 *seconds = -1;
40 *percent = -1;
42 return SDL_TRUE;
43}
44#endif
45
47#ifdef SDL_POWER_LINUX /* in order of preference. More than could work. */
52#endif
53#ifdef SDL_POWER_WINDOWS /* handles Win32, Win64, PocketPC. */
55#endif
56#ifdef SDL_POWER_UIKIT /* handles iPhone/iPad/etc */
58#endif
59#ifdef SDL_POWER_MACOSX /* handles Mac OS X, Darwin. */
61#endif
62#ifdef SDL_POWER_HAIKU /* with BeOS euc.jp apm driver. Does this work on Haiku? */
64#endif
65#ifdef SDL_POWER_ANDROID /* handles Android. */
67#endif
68#ifdef SDL_POWER_PSP /* handles PSP. */
70#endif
71#ifdef SDL_POWER_WINRT /* handles WinRT */
73#endif
74#ifdef SDL_POWER_EMSCRIPTEN /* handles Emscripten */
76#endif
77
78#ifdef SDL_POWER_HARDWIRED
79 SDL_GetPowerInfo_Hardwired,
80#endif
81};
82#endif
83
85SDL_GetPowerInfo(int *seconds, int *percent)
86{
87#ifndef SDL_POWER_DISABLED
88 const int total = sizeof(implementations) / sizeof(implementations[0]);
90 int i;
91#endif
92
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 }
101
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
109
110 /* nothing was definitive. */
111 *seconds = -1;
112 *percent = -1;
114}
115
116/* vi: set ts=4 sw=4 expandtab: */
static SDL_GetPowerInfo_Impl implementations[]
Definition: SDL_power.c:46
SDL_PowerState SDL_GetPowerInfo(int *seconds, int *percent)
Get the current power supply details.
Definition: SDL_power.c:85
SDL_bool(* SDL_GetPowerInfo_Impl)(SDL_PowerState *state, int *seconds, int *percent)
Definition: SDL_power.c:30
SDL_PowerState
The basic state for the system's power supply.
Definition: SDL_power.h:43
@ SDL_POWERSTATE_NO_BATTERY
Definition: SDL_power.h:46
@ SDL_POWERSTATE_UNKNOWN
Definition: SDL_power.h:44
SDL_bool
Definition: SDL_stdinc.h:162
@ SDL_TRUE
Definition: SDL_stdinc.h:164
SDL_bool SDL_GetPowerInfo_PSP(SDL_PowerState *, int *, int *)
SDL_bool SDL_GetPowerInfo_Haiku(SDL_PowerState *, int *, int *)
SDL_bool SDL_GetPowerInfo_Linux_sys_class_power_supply(SDL_PowerState *, int *, int *)
SDL_bool SDL_GetPowerInfo_Linux_org_freedesktop_upower(SDL_PowerState *, int *, int *)
SDL_bool SDL_GetPowerInfo_Emscripten(SDL_PowerState *, int *, int *)
SDL_bool SDL_GetPowerInfo_UIKit(SDL_PowerState *, int *, int *)
SDL_bool SDL_GetPowerInfo_Linux_proc_apm(SDL_PowerState *, int *, int *)
SDL_bool SDL_GetPowerInfo_WinRT(SDL_PowerState *, int *, int *)
SDL_bool SDL_GetPowerInfo_Linux_proc_acpi(SDL_PowerState *, int *, int *)
SDL_bool SDL_GetPowerInfo_MacOSX(SDL_PowerState *, int *, int *)
SDL_bool SDL_GetPowerInfo_Android(SDL_PowerState *, int *, int *)
SDL_bool SDL_GetPowerInfo_Windows(SDL_PowerState *, int *, int *)
struct xkb_state * state
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
#define NULL
Definition: begin_code.h:167
SDL_bool retval