SDL_syspower.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#ifndef SDL_POWER_DISABLED
#if SDL_POWER_MACOSX
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/ps/IOPowerSources.h>
#include <IOKit/ps/IOPSKeys.h>
#include "SDL_power.h"
/* CoreFoundation is so verbose... */
#define STRMATCH(a,b) (CFStringCompare(a, b, 0) == kCFCompareEqualTo)
#define GETVAL(k,v) \
CFDictionaryGetValueIfPresent(dict, CFSTR(k), (const void **) v)
/* Note that AC power sources also include a laptop battery it is charging. */
static void
checkps(CFDictionaryRef dict, SDL_bool * have_ac, SDL_bool * have_battery,
SDL_bool * charging, int *seconds, int *percent)
{
CFStringRef strval; /* don't CFRelease() this. */
CFBooleanRef bval;
CFNumberRef numval;
SDL_bool charge = SDL_FALSE;
SDL_bool choose = SDL_FALSE;
SDL_bool is_ac = SDL_FALSE;
int secs = -1;
int maxpct = -1;
int pct = -1;
if ((GETVAL(kIOPSIsPresentKey, &bval)) && (bval == kCFBooleanFalse)) {
return; /* nothing to see here. */
}
if (!GETVAL(kIOPSPowerSourceStateKey, &strval)) {
return;
}
if (STRMATCH(strval, CFSTR(kIOPSACPowerValue))) {
is_ac = *have_ac = SDL_TRUE;
} else if (!STRMATCH(strval, CFSTR(kIOPSBatteryPowerValue))) {
return; /* not a battery? */
}
if ((GETVAL(kIOPSIsChargingKey, &bval)) && (bval == kCFBooleanTrue)) {
charge = SDL_TRUE;
}
if (GETVAL(kIOPSMaxCapacityKey, &numval)) {
SInt32 val = -1;
CFNumberGetValue(numval, kCFNumberSInt32Type, &val);
if (val > 0) {
*have_battery = SDL_TRUE;
maxpct = (int) val;
}
}
if (GETVAL(kIOPSMaxCapacityKey, &numval)) {
SInt32 val = -1;
CFNumberGetValue(numval, kCFNumberSInt32Type, &val);
if (val > 0) {
*have_battery = SDL_TRUE;
maxpct = (int) val;
}
}
if (GETVAL(kIOPSTimeToEmptyKey, &numval)) {
SInt32 val = -1;
CFNumberGetValue(numval, kCFNumberSInt32Type, &val);
/* Mac OS X reports 0 minutes until empty if you're plugged in. :( */
if ((val == 0) && (is_ac)) {
val = -1; /* !!! FIXME: calc from timeToFull and capacity? */
}
secs = (int) val;
if (secs > 0) {
secs *= 60; /* value is in minutes, so convert to seconds. */
}
}
if (GETVAL(kIOPSCurrentCapacityKey, &numval)) {
SInt32 val = -1;
CFNumberGetValue(numval, kCFNumberSInt32Type, &val);
pct = (int) val;
}
if ((pct > 0) && (maxpct > 0)) {
pct = (int) ((((double) pct) / ((double) maxpct)) * 100.0);
}
if (pct > 100) {
pct = 100;
}
/*
* We pick the battery that claims to have the most minutes left.
* (failing a report of minutes, we'll take the highest percent.)
*/
if ((secs < 0) && (*seconds < 0)) {
if ((pct < 0) && (*percent < 0)) {
choose = SDL_TRUE; /* at least we know there's a battery. */
}
if (pct > *percent) {
choose = SDL_TRUE;
}
} else if (secs > *seconds) {
choose = SDL_TRUE;
}
if (choose) {
*seconds = secs;
*percent = pct;
*charging = charge;
}
}
#undef GETVAL
#undef STRMATCH
SDL_bool
SDL_GetPowerInfo_MacOSX(SDL_PowerState * state, int *seconds, int *percent)
{
CFTypeRef blob = IOPSCopyPowerSourcesInfo();
*seconds = -1;
*percent = -1;
*state = SDL_POWERSTATE_UNKNOWN;
if (blob != NULL) {
CFArrayRef list = IOPSCopyPowerSourcesList(blob);
if (list != NULL) {
/* don't CFRelease() the list items, or dictionaries! */
SDL_bool have_ac = SDL_FALSE;
SDL_bool have_battery = SDL_FALSE;
SDL_bool charging = SDL_FALSE;
const CFIndex total = CFArrayGetCount(list);
CFIndex i;
for (i = 0; i < total; i++) {
CFTypeRef ps = (CFTypeRef) CFArrayGetValueAtIndex(list, i);
CFDictionaryRef dict =
IOPSGetPowerSourceDescription(blob, ps);
if (dict != NULL) {
checkps(dict, &have_ac, &have_battery, &charging,
seconds, percent);
}
}
if (!have_battery) {
*state = SDL_POWERSTATE_NO_BATTERY;
} else if (charging) {
*state = SDL_POWERSTATE_CHARGING;
} else if (have_ac) {
*state = SDL_POWERSTATE_CHARGED;
} else {
*state = SDL_POWERSTATE_ON_BATTERY;
}
CFRelease(list);
}
CFRelease(blob);
}
return SDL_TRUE; /* always the definitive answer on Mac OS X. */
}
#endif /* SDL_POWER_MACOSX */
#endif /* SDL_POWER_DISABLED */
/* vi: set ts=4 sw=4 expandtab: */
state
struct xkb_state * state
Definition: SDL_waylandsym.h:94
SDL_POWERSTATE_UNKNOWN
Definition: SDL_power.h:44
SDL_POWERSTATE_CHARGED
Definition: SDL_power.h:48
SDL_POWERSTATE_NO_BATTERY
Definition: SDL_power.h:46
SDL_bool
SDL_bool
Definition: SDL_stdinc.h:126
val
GLuint GLfloat * val
Definition: SDL_opengl_glext.h:1492
SDL_TRUE
Definition: SDL_stdinc.h:129
i
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:42
SDL_power.h
SDL_POWERSTATE_CHARGING
Definition: SDL_power.h:47
NULL
#define NULL
Definition: begin_code.h:143
SDL_POWERSTATE_ON_BATTERY
Definition: SDL_power.h:45
SDL_PowerState
SDL_PowerState
The basic state for the system&#39;s power supply.
Definition: SDL_power.h:42
SDL_FALSE
Definition: SDL_stdinc.h:128
SDL_GetPowerInfo_MacOSX
SDL_bool SDL_GetPowerInfo_MacOSX(SDL_PowerState *, int *, int *)