forked from Green-Sky/tomato
124 lines
3.9 KiB
C
124 lines
3.9 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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/* uses BeOS euc.jp apm driver. */
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/* !!! FIXME: does this thing even work on Haiku? */
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#ifndef SDL_POWER_DISABLED
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#ifdef SDL_POWER_HAIKU
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <drivers/Drivers.h>
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/* These values are from apm.h ... */
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#define APM_DEVICE_PATH "/dev/misc/apm"
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#define APM_FUNC_OFFSET 0x5300
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#define APM_FUNC_GET_POWER_STATUS 10
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#define APM_DEVICE_ALL 1
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#define APM_BIOS_CALL (B_DEVICE_OP_CODES_END + 3)
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SDL_bool SDL_GetPowerInfo_Haiku(SDL_PowerState *state, int *seconds, int *percent)
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{
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const int fd = open("/dev/misc/apm", O_RDONLY | O_CLOEXEC);
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SDL_bool need_details = SDL_FALSE;
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uint16 regs[6];
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uint8 ac_status;
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uint8 battery_status;
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uint8 battery_flags;
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uint8 battery_life;
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uint32 battery_time;
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int rc;
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if (fd == -1) {
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return SDL_FALSE; /* maybe some other method will work? */
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}
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SDL_memset(regs, '\0', sizeof(regs));
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regs[0] = APM_FUNC_OFFSET + APM_FUNC_GET_POWER_STATUS;
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regs[1] = APM_DEVICE_ALL;
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rc = ioctl(fd, APM_BIOS_CALL, regs);
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close(fd);
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if (rc < 0) {
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return SDL_FALSE;
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}
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ac_status = regs[1] >> 8;
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battery_status = regs[1] & 0xFF;
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battery_flags = regs[2] >> 8;
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battery_life = regs[2] & 0xFF;
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battery_time = (uint32)regs[3];
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/* in theory, _something_ should be set in battery_flags, right? */
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if (battery_flags == 0x00) { /* older APM BIOS? Less fields. */
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battery_time = 0xFFFF;
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if (battery_status == 0xFF) {
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battery_flags = 0xFF;
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} else {
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battery_flags = (1 << battery_status);
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}
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}
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if ((battery_time != 0xFFFF) && (battery_time & (1 << 15))) {
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/* time is in minutes, not seconds */
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battery_time = (battery_time & 0x7FFF) * 60;
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}
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if (battery_flags == 0xFF) { /* unknown state */
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*state = SDL_POWERSTATE_UNKNOWN;
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} else if (battery_flags & (1 << 7)) { /* no battery */
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*state = SDL_POWERSTATE_NO_BATTERY;
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} else if (battery_flags & (1 << 3)) { /* charging */
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*state = SDL_POWERSTATE_CHARGING;
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need_details = SDL_TRUE;
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} else if (ac_status == 1) {
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*state = SDL_POWERSTATE_CHARGED; /* on AC, not charging. */
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need_details = SDL_TRUE;
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} else {
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*state = SDL_POWERSTATE_ON_BATTERY; /* not on AC. */
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need_details = SDL_TRUE;
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}
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*percent = -1;
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*seconds = -1;
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if (need_details) {
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const int pct = (int)battery_life;
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const int secs = (int)battery_time;
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if (pct != 255) { /* 255 == unknown */
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*percent = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */
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}
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if (secs != 0xFFFF) { /* 0xFFFF == unknown */
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*seconds = secs;
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}
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}
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return SDL_TRUE; /* the definitive answer if APM driver replied. */
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}
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#endif /* SDL_POWER_HAIKU */
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#endif /* SDL_POWER_DISABLED */
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