Mercurial > sdl-ios-xcode

annotate src/power/beos/SDL_syspower.c @ 4495:dbbfdb9ea716

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Simplified clipboard API for sanity's sake. A complete clipboard implementation would support multiple formats that could be queried at runtime, events for when the clipboard contents changed, support for HTML, images, etc. We're not going that crazy, at least for now. :)
author Sam Lantinga <slouken@libsdl.org>
date Wed, 07 Jul 2010 23:54:03 -0700
parents f7b03b6838cb
children b530ef003506
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #ifndef SDL_POWER_DISABLED
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25 #ifdef SDL_POWER_BEOS
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26
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27 #include <stdio.h>
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28 #include <stdlib.h>
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29 #include <unistd.h>
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30 #include <fcntl.h>
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31 #include <ctype.h>
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32 #include <drivers/Drivers.h>
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33
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34 /* These values are from apm.h ... */
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35 #define APM_DEVICE_PATH "/dev/misc/apm"
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36 #define APM_FUNC_OFFSET 0x5300
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37 #define APM_FUNC_GET_POWER_STATUS 10
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38 #define APM_DEVICE_ALL 1
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39 #define APM_BIOS_CALL (B_DEVICE_OP_CODES_END + 3)
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40
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41 #include "SDL_power.h"
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42
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43 SDL_bool
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44 SDL_GetPowerInfo_BeOS(SDL_PowerState * state, int *seconds, int *percent)
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45 {
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46 const int fd = open("/dev/misc/apm", O_RDONLY);
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47 SDL_bool need_details = SDL_FALSE;
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48 uint16 regs[6];
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49 uint8 ac_status;
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50 uint8 battery_status;
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51 uint8 battery_flags;
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52 uint8 battery_life;
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53 uint32 battery_time;
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54
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55 if (fd == -1) {
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56 return SDL_FALSE; /* maybe some other method will work? */
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57 }
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58
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59 memset(regs, '\0', sizeof(regs));
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60 regs[0] = APM_FUNC_OFFSET + APM_FUNC_GET_POWER_STATUS;
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61 regs[1] = APM_DEVICE_ALL;
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62 rc = ioctl(fd, APM_BIOS_CALL, regs);
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63 close(fd);
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64
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65 if (rc < 0) {
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66 return SDL_FALSE;
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67 }
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68
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69 ac_status = regs[1] >> 8;
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70 battery_status = regs[1] & 0xFF;
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71 battery_flags = regs[2] >> 8;
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72 battery_life = regs[2] & 0xFF;
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73 battery_time = (uint32) regs[3];
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74
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75 /* in theory, _something_ should be set in battery_flags, right? */
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76 if (battery_flags == 0x00) { /* older APM BIOS? Less fields. */
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77 battery_time = 0xFFFF;
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78 if (battery_status == 0xFF) {
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79 battery_flags = 0xFF;
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80 } else {
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81 battery_flags = (1 << status.battery_status);
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82 }
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83 }
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84
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85 if ((battery_time != 0xFFFF) && (battery_time & (1 << 15))) {
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86 /* time is in minutes, not seconds */
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87 battery_time = (battery_time & 0x7FFF) * 60;
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88 }
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89
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90 if (battery_flags == 0xFF) { /* unknown state */
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91 *state = SDL_POWERSTATE_UNKNOWN;
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92 } else if (battery_flags & (1 << 7)) { /* no battery */
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93 *state = SDL_POWERSTATE_NO_BATTERY;
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94 } else if (battery_flags & (1 << 3)) { /* charging */
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95 *state = SDL_POWERSTATE_CHARGING;
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96 need_details = SDL_TRUE;
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97 } else if (ac_status == 1) {
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98 *state = SDL_POWERSTATE_CHARGED; /* on AC, not charging. */
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99 need_details = SDL_TRUE;
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100 } else {
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101 *state = SDL_POWERSTATE_ON_BATTERY; /* not on AC. */
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102 need_details = SDL_TRUE;
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103 }
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104
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105 *percent = -1;
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106 *seconds = -1;
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107 if (need_details) {
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108 const int pct = (int) battery_life;
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109 const int secs = (int) battery_time;
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110
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111 if (pct != 255) { /* 255 == unknown */
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112 *percent = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */
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113 }
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114 if (secs != 0xFFFF) { /* 0xFFFF == unknown */
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115 *seconds = secs;
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116 }
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117 }
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118
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119 return SDL_TRUE; /* the definitive answer if APM driver replied. */
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120 }
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121
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122 #endif /* SDL_POWER_BEOS */
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123 #endif /* SDL_POWER_DISABLED */
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124
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125 /* vi: set ts=4 sw=4 expandtab: */