zenilib: zenilib/jni/external/sdl/src/power/beos/SDL_syspower.c Source File

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SDL_syspower.c
Go to the documentation of this file.
1 /*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2013 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_config.h"
22
23 #ifndef SDL_POWER_DISABLED
24 #if SDL_POWER_BEOS
25
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <unistd.h>
29 #include <fcntl.h>
30 #include <ctype.h>
31 #include <drivers/Drivers.h>
32
33 /* These values are from apm.h ... */
34 #define APM_DEVICE_PATH "/dev/misc/apm"
35 #define APM_FUNC_OFFSET 0x5300
36 #define APM_FUNC_GET_POWER_STATUS 10
37 #define APM_DEVICE_ALL 1
38 #define APM_BIOS_CALL (B_DEVICE_OP_CODES_END + 3)
39
40 #include "SDL_power.h"
41
42 SDL_bool
43 SDL_GetPowerInfo_BeOS(SDL_PowerState * state, int *seconds, int *percent)
44 {
45 const int fd = open("/dev/misc/apm", O_RDONLY);
46 SDL_bool need_details = SDL_FALSE;
47 uint16 regs[6];
48 uint8 ac_status;
49 uint8 battery_status;
50 uint8 battery_flags;
51 uint8 battery_life;
52 uint32 battery_time;
53 int rc;
54
55 if (fd == -1) {
56 return SDL_FALSE; /* maybe some other method will work? */
57 }
58
59 memset(regs, '\0', sizeof(regs));
60 regs[0] = APM_FUNC_OFFSET + APM_FUNC_GET_POWER_STATUS;
61 regs[1] = APM_DEVICE_ALL;
62 rc = ioctl(fd, APM_BIOS_CALL, regs);
63 close(fd);
64
65 if (rc < 0) {
66 return SDL_FALSE;
67 }
68
69 ac_status = regs[1] >> 8;
70 battery_status = regs[1] & 0xFF;
71 battery_flags = regs[2] >> 8;
72 battery_life = regs[2] & 0xFF;
73 battery_time = (uint32) regs[3];
74
75 /* in theory, _something_ should be set in battery_flags, right? */
76 if (battery_flags == 0x00) { /* older APM BIOS? Less fields. */
77 battery_time = 0xFFFF;
78 if (battery_status == 0xFF) {
79 battery_flags = 0xFF;
80 } else {
81 battery_flags = (1 << battery_status);
82 }
83 }
84
85 if ((battery_time != 0xFFFF) && (battery_time & (1 << 15))) {
86 /* time is in minutes, not seconds */
87 battery_time = (battery_time & 0x7FFF) * 60;
88 }
89
90 if (battery_flags == 0xFF) { /* unknown state */
91 *state = SDL_POWERSTATE_UNKNOWN;
92 } else if (battery_flags & (1 << 7)) { /* no battery */
93 *state = SDL_POWERSTATE_NO_BATTERY;
94 } else if (battery_flags & (1 << 3)) { /* charging */
95 *state = SDL_POWERSTATE_CHARGING;
96 need_details = SDL_TRUE;
97 } else if (ac_status == 1) {
98 *state = SDL_POWERSTATE_CHARGED; /* on AC, not charging. */
99 need_details = SDL_TRUE;
100 } else {
101 *state = SDL_POWERSTATE_ON_BATTERY; /* not on AC. */
102 need_details = SDL_TRUE;
103 }
104
105 *percent = -1;
106 *seconds = -1;
107 if (need_details) {
108 const int pct = (int) battery_life;
109 const int secs = (int) battery_time;
110
111 if (pct != 255) { /* 255 == unknown */
112 *percent = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */
113 }
114 if (secs != 0xFFFF) { /* 0xFFFF == unknown */
115 *seconds = secs;
116 }
117 }
118
119 return SDL_TRUE; /* the definitive answer if APM driver replied. */
120 }
121
122 #endif /* SDL_POWER_BEOS */
123 #endif /* SDL_POWER_DISABLED */
124
125 /* vi: set ts=4 sw=4 expandtab: */
SDL_GetPowerInfo_BeOS
SDL_bool SDL_GetPowerInfo_BeOS(SDL_PowerState *, int *, int *)
SDL_bool
SDL_bool
Definition: SDL_stdinc.h:116
SDL_TRUE
Definition: SDL_stdinc.h:119
memset
#define memset
Definition: SDL_malloc.c:633
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_FALSE
Definition: SDL_stdinc.h:118
SDL_config.h
int
int
Definition: SDL_systhread.c:37
SDL_power.h
SDL_POWERSTATE_CHARGING
Definition: SDL_power.h:47
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