1/*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2021 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;
41 *state = SDL_POWERSTATE_NO_BATTERY;
42 return SDL_TRUE;
43}
44#endif
45
46static 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_VITA /* handles PSVita. */
72 SDL_GetPowerInfo_VITA,
73#endif
74#ifdef SDL_POWER_WINRT /* handles WinRT */
75 SDL_GetPowerInfo_WinRT,
76#endif
77#ifdef SDL_POWER_EMSCRIPTEN /* handles Emscripten */
78 SDL_GetPowerInfo_Emscripten,
79#endif
80
81#ifdef SDL_POWER_HARDWIRED
82 SDL_GetPowerInfo_Hardwired,
83#endif
84};
85#endif
86
87SDL_PowerState
88SDL_GetPowerInfo(int *seconds, int *percent)
89{
90#ifndef SDL_POWER_DISABLED
91 const int total = sizeof(implementations) / sizeof(implementations[0]);
92 SDL_PowerState retval = SDL_POWERSTATE_UNKNOWN;
93 int i;
94#endif
95
96 int _seconds, _percent;
97 /* Make these never NULL for platform-specific implementations. */
98 if (seconds == NULL) {
99 seconds = &_seconds;
100 }
101 if (percent == NULL) {
102 percent = &_percent;
103 }
104
105#ifndef SDL_POWER_DISABLED
106 for (i = 0; i < total; i++) {
107 if (implementations[i](&retval, seconds, percent)) {
108 return retval;
109 }
110 }
111#endif
112
113 /* nothing was definitive. */
114 *seconds = -1;
115 *percent = -1;
116 return SDL_POWERSTATE_UNKNOWN;
117}
118
119/* vi: set ts=4 sw=4 expandtab: */
120