Mercurial > sdl-ios-xcode
annotate src/power/SDL_power.c @ 3697:f7b03b6838cb
Fixed bug #926
Updated copyright to LGPL version 2.1 and year 2010
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 24 Jan 2010 21:10:53 +0000 |
parents | e8f63b28947d |
children | 42e1092225f9 |
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1 /* |
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2 SDL - Simple DirectMedia Layer |
3697 | 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 #include "SDL_power.h" |
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24 |
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25 /* |
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26 * Returns SDL_TRUE if we have a definitive answer. |
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27 * SDL_FALSE to try next implementation. |
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28 */ |
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29 typedef SDL_bool |
3186 | 30 (*SDL_GetPowerInfo_Impl) (SDL_PowerState * state, int *seconds, |
31 int *percent); | |
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32 |
3186 | 33 SDL_bool SDL_GetPowerInfo_Linux_proc_acpi(SDL_PowerState *, int *, int *); |
34 SDL_bool SDL_GetPowerInfo_Linux_proc_apm(SDL_PowerState *, int *, int *); | |
35 SDL_bool SDL_GetPowerInfo_Windows(SDL_PowerState *, int *, int *); | |
36 SDL_bool SDL_GetPowerInfo_MacOSX(SDL_PowerState *, int *, int *); | |
37 SDL_bool SDL_GetPowerInfo_BeOS(SDL_PowerState *, int *, int *); | |
38 SDL_bool SDL_GetPowerInfo_NintendoDS(SDL_PowerState *, int *, int *); | |
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39 |
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40 #ifndef SDL_POWER_DISABLED |
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41 #ifdef SDL_POWER_HARDWIRED |
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42 /* This is for things that _never_ have a battery */ |
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43 static SDL_bool |
3186 | 44 SDL_GetPowerInfo_Hardwired(SDL_PowerState * state, int *seconds, int *percent) |
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45 { |
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46 *seconds = -1; |
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47 *percent = -1; |
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48 *state = SDL_POWERSTATE_NO_BATTERY; |
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49 return SDL_TRUE; |
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50 } |
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51 #endif |
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52 #endif |
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53 |
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54 |
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55 static SDL_GetPowerInfo_Impl implementations[] = { |
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56 #ifndef SDL_POWER_DISABLED |
3186 | 57 #ifdef SDL_POWER_LINUX /* in order of preference. More than could work. */ |
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58 SDL_GetPowerInfo_Linux_proc_acpi, |
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59 SDL_GetPowerInfo_Linux_proc_apm, |
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60 #endif |
3186 | 61 #ifdef SDL_POWER_WINDOWS /* handles Win32, Win64, PocketPC. */ |
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62 SDL_GetPowerInfo_Windows, |
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63 #endif |
3186 | 64 #ifdef SDL_POWER_MACOSX /* handles Mac OS X, Darwin, iPhone. */ |
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65 SDL_GetPowerInfo_MacOSX, |
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66 #endif |
3186 | 67 #ifdef SDL_POWER_NINTENDODS /* handles Nintendo DS. */ |
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68 SDL_GetPowerInfo_NintendoDS, |
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69 #endif |
3186 | 70 #ifdef SDL_POWER_BEOS /* handles BeOS, Zeta, with euc.jp apm driver. */ |
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71 SDL_GetPowerInfo_BeOS, |
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72 #endif |
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73 #ifdef SDL_POWER_HARDWIRED |
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74 SDL_GetPowerInfo_Hardwired, |
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75 #endif |
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76 #endif |
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77 }; |
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78 |
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79 SDL_PowerState |
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80 SDL_GetPowerInfo(int *seconds, int *percent) |
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81 { |
3186 | 82 const int total = sizeof(implementations) / sizeof(implementations[0]); |
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83 int _seconds, _percent; |
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84 SDL_PowerState retval; |
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85 int i; |
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86 |
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87 /* Make these never NULL for platform-specific implementations. */ |
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88 if (seconds == NULL) { |
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89 seconds = &_seconds; |
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90 } |
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91 |
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92 if (percent == NULL) { |
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93 percent = &_percent; |
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94 } |
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95 |
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96 for (i = 0; i < total; i++) { |
3186 | 97 if (implementations[i] (&retval, seconds, percent)) { |
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98 return retval; |
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99 } |
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100 } |
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101 |
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102 /* nothing was definitive. */ |
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103 *seconds = -1; |
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104 *percent = -1; |
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105 return SDL_POWERSTATE_UNKNOWN; |
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106 } |
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107 |
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108 /* vi: set ts=4 sw=4 expandtab: */ |