1 /*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2020 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
23 /* uses BeOS euc.jp apm driver. */
24 /* !!! FIXME: does this thing even work on Haiku? */
25
26 #ifndef SDL_POWER_DISABLED
27 #if SDL_POWER_HAIKU
28
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <unistd.h>
32 #include <fcntl.h>
33 #include <ctype.h>
34 #include <drivers/Drivers.h>
35
36 /* These values are from apm.h ... */
37 #define APM_DEVICE_PATH "/dev/misc/apm"
38 #define APM_FUNC_OFFSET 0x5300
39 #define APM_FUNC_GET_POWER_STATUS 10
40 #define APM_DEVICE_ALL 1
41 #define APM_BIOS_CALL (B_DEVICE_OP_CODES_END + 3)
42
43 #include "SDL_power.h"
44
45 SDL_bool
SDL_GetPowerInfo_Haiku(SDL_PowerState * state,int * seconds,int * percent)46 SDL_GetPowerInfo_Haiku(SDL_PowerState * state, int *seconds, int *percent)
47 {
48 const int fd = open("/dev/misc/apm", O_RDONLY);
49 SDL_bool need_details = SDL_FALSE;
50 uint16 regs[6];
51 uint8 ac_status;
52 uint8 battery_status;
53 uint8 battery_flags;
54 uint8 battery_life;
55 uint32 battery_time;
56 int rc;
57
58 if (fd == -1) {
59 return SDL_FALSE; /* maybe some other method will work? */
60 }
61
62 memset(regs, '\0', sizeof(regs));
63 regs[0] = APM_FUNC_OFFSET + APM_FUNC_GET_POWER_STATUS;
64 regs[1] = APM_DEVICE_ALL;
65 rc = ioctl(fd, APM_BIOS_CALL, regs);
66 close(fd);
67
68 if (rc < 0) {
69 return SDL_FALSE;
70 }
71
72 ac_status = regs[1] >> 8;
73 battery_status = regs[1] & 0xFF;
74 battery_flags = regs[2] >> 8;
75 battery_life = regs[2] & 0xFF;
76 battery_time = (uint32) regs[3];
77
78 /* in theory, _something_ should be set in battery_flags, right? */
79 if (battery_flags == 0x00) { /* older APM BIOS? Less fields. */
80 battery_time = 0xFFFF;
81 if (battery_status == 0xFF) {
82 battery_flags = 0xFF;
83 } else {
84 battery_flags = (1 << battery_status);
85 }
86 }
87
88 if ((battery_time != 0xFFFF) && (battery_time & (1 << 15))) {
89 /* time is in minutes, not seconds */
90 battery_time = (battery_time & 0x7FFF) * 60;
91 }
92
93 if (battery_flags == 0xFF) { /* unknown state */
94 *state = SDL_POWERSTATE_UNKNOWN;
95 } else if (battery_flags & (1 << 7)) { /* no battery */
96 *state = SDL_POWERSTATE_NO_BATTERY;
97 } else if (battery_flags & (1 << 3)) { /* charging */
98 *state = SDL_POWERSTATE_CHARGING;
99 need_details = SDL_TRUE;
100 } else if (ac_status == 1) {
101 *state = SDL_POWERSTATE_CHARGED; /* on AC, not charging. */
102 need_details = SDL_TRUE;
103 } else {
104 *state = SDL_POWERSTATE_ON_BATTERY; /* not on AC. */
105 need_details = SDL_TRUE;
106 }
107
108 *percent = -1;
109 *seconds = -1;
110 if (need_details) {
111 const int pct = (int) battery_life;
112 const int secs = (int) battery_time;
113
114 if (pct != 255) { /* 255 == unknown */
115 *percent = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */
116 }
117 if (secs != 0xFFFF) { /* 0xFFFF == unknown */
118 *seconds = secs;
119 }
120 }
121
122 return SDL_TRUE; /* the definitive answer if APM driver replied. */
123 }
124
125 #endif /* SDL_POWER_HAIKU */
126 #endif /* SDL_POWER_DISABLED */
127
128 /* vi: set ts=4 sw=4 expandtab: */
129