dlls/kernel32/powermgnt.c

   1 /*
   2  * Copyright 1995 Thomas Sandford (tdgsandf@prds-grn.demon.co.uk)
   3  * Copyright 2003 Dimitrie O. Paun
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include <stdarg.h>
  21
  22 #define NONAMELESSUNION
  23 #define NONAMELESSSTRUCT
  24 #include "ntstatus.h"
  25 #define WIN32_NO_STATUS
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winternl.h"
  29 #include "kernel_private.h"
  30 #include "wine/debug.h"
  31 #include "wine/heap.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(powermgnt);
  34
  35 /******************************************************************************
  36  *           GetDevicePowerState   (KERNEL32.@)
  37  */
  38 BOOL WINAPI GetDevicePowerState(HANDLE hDevice, BOOL* pfOn)
  39 {
  40     WARN("(hDevice %p pfOn %p): stub\n", hDevice, pfOn);
  41     return TRUE; /* no information */
  42 }
  43
  44 /***********************************************************************
  45  *           GetSystemPowerStatus      (KERNEL32.@)
  46  */
  47 BOOL WINAPI GetSystemPowerStatus(LPSYSTEM_POWER_STATUS ps)
  48 {
  49     SYSTEM_BATTERY_STATE bs;
  50     NTSTATUS status;
  51
  52     TRACE("(%p)\n", ps);
  53
  54     ps->ACLineStatus        = AC_LINE_UNKNOWN;
  55     ps->BatteryFlag         = BATTERY_FLAG_UNKNOWN;
  56     ps->BatteryLifePercent  = BATTERY_PERCENTAGE_UNKNOWN;
  57     ps->SystemStatusFlag    = 0;
  58     ps->BatteryLifeTime     = BATTERY_LIFE_UNKNOWN;
  59     ps->BatteryFullLifeTime = BATTERY_LIFE_UNKNOWN;
  60
  61     status = NtPowerInformation(SystemBatteryState, NULL, 0, &bs, sizeof(bs));
  62     if (status == STATUS_NOT_IMPLEMENTED) return TRUE;
  63     if (FAILED(status)) return FALSE;
  64
  65     ps->ACLineStatus = bs.AcOnLine;
  66
  67     if (bs.BatteryPresent)
  68     {
  69         ps->BatteryLifePercent = bs.MaxCapacity ? bs.RemainingCapacity / bs.MaxCapacity : 100;
  70         ps->BatteryLifeTime = bs.EstimatedTime;
  71         if (!bs.Charging && (LONG)bs.Rate < 0)
  72             ps->BatteryFullLifeTime = 3600 * bs.MaxCapacity / -(LONG)bs.Rate;
  73
  74         ps->BatteryFlag = 0;
  75         if (bs.Charging)
  76             ps->BatteryFlag |= BATTERY_FLAG_CHARGING;
  77         if (ps->BatteryLifePercent > 66)
  78             ps->BatteryFlag |= BATTERY_FLAG_HIGH;
  79         if (ps->BatteryLifePercent < 33)
  80             ps->BatteryFlag |= BATTERY_FLAG_LOW;
  81         if (ps->BatteryLifePercent < 5)
  82             ps->BatteryFlag |= BATTERY_FLAG_CRITICAL;
  83     }
  84     else
  85     {
  86         ps->BatteryFlag = BATTERY_FLAG_NO_BATTERY;
  87     }
  88
  89     return TRUE;
  90 }
  91
  92 /***********************************************************************
  93  *           IsSystemResumeAutomatic   (KERNEL32.@)
  94  */
  95 BOOL WINAPI IsSystemResumeAutomatic(void)
  96 {
  97     WARN("(): stub, harmless.\n");
  98     return FALSE;
  99 }
 100
 101 /***********************************************************************
 102  *           RequestWakeupLatency      (KERNEL32.@)
 103  */
 104 BOOL WINAPI RequestWakeupLatency(LATENCY_TIME latency)
 105 {
 106     WARN("(): stub, harmless.\n");
 107     return TRUE;
 108 }
 109
 110 /***********************************************************************
 111  *           RequestDeviceWakeup      (KERNEL32.@)
 112  */
 113 BOOL WINAPI RequestDeviceWakeup(HANDLE device)
 114 {
 115     FIXME("(%p): stub\n", device);
 116     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 117     return FALSE;
 118 }
 119
 120 /***********************************************************************
 121  *           SetSystemPowerState      (KERNEL32.@)
 122  */
 123 BOOL WINAPI SetSystemPowerState(BOOL suspend_or_hibernate,
 124                                   BOOL force_flag)
 125 {
 126     WARN("(): stub, harmless.\n");
 127     return TRUE;
 128 }
 129
 130 /***********************************************************************
 131  * SetThreadExecutionState (KERNEL32.@)
 132  *
 133  * Informs the system that activity is taking place for
 134  * power management purposes.
 135  */
 136 EXECUTION_STATE WINAPI SetThreadExecutionState(EXECUTION_STATE flags)
 137 {
 138     EXECUTION_STATE old;
 139
 140     NtSetThreadExecutionState(flags, &old);
 141
 142     return old;
 143 }
 144
 145 /***********************************************************************
 146  *           PowerCreateRequest      (KERNEL32.@)
 147  */
 148 HANDLE WINAPI PowerCreateRequest(REASON_CONTEXT *context)
 149 {
 150     COUNTED_REASON_CONTEXT nt_context;
 151     HANDLE handle;
 152     NTSTATUS status;
 153     WCHAR module_name[MAX_PATH];
 154
 155     TRACE( "(%p)\n", context );
 156
 157     nt_context.Version = context->Version;
 158     nt_context.Flags = context->Flags;
 159     if (context->Flags & POWER_REQUEST_CONTEXT_SIMPLE_STRING)
 160         RtlInitUnicodeString( &nt_context.u.SimpleString, context->Reason.SimpleReasonString );
 161     else if (context->Flags & POWER_REQUEST_CONTEXT_DETAILED_STRING)
 162     {
 163         int i;
 164
 165         GetModuleFileNameW( context->Reason.Detailed.LocalizedReasonModule, module_name, ARRAY_SIZE(module_name) );
 166         RtlInitUnicodeString( &nt_context.u.s.ResourceFileName, module_name );
 167         nt_context.u.s.ResourceReasonId = context->Reason.Detailed.LocalizedReasonId;
 168         nt_context.u.s.StringCount = context->Reason.Detailed.ReasonStringCount;
 169         nt_context.u.s.ReasonStrings = heap_alloc( nt_context.u.s.StringCount * sizeof(UNICODE_STRING) );
 170         for (i = 0; i < nt_context.u.s.StringCount; i++)
 171             RtlInitUnicodeString( &nt_context.u.s.ReasonStrings[i], context->Reason.Detailed.ReasonStrings[i] );
 172     }
 173
 174     status = NtCreatePowerRequest( &handle, &nt_context );
 175     if (nt_context.Flags & POWER_REQUEST_CONTEXT_DETAILED_STRING)
 176         heap_free( nt_context.u.s.ReasonStrings );
 177     if (!set_ntstatus( status )) return INVALID_HANDLE_VALUE;
 178     return handle;
 179 }
 180
 181 /***********************************************************************
 182  *           PowerSetRequest      (KERNEL32.@)
 183  */
 184 BOOL WINAPI PowerSetRequest(HANDLE request, POWER_REQUEST_TYPE type)
 185 {
 186     return set_ntstatus( NtSetPowerRequest( request, type ));
 187 }
 188
 189 /***********************************************************************
 190  *           PowerClearRequest      (KERNEL32.@)
 191  */
 192 BOOL WINAPI PowerClearRequest(HANDLE request, POWER_REQUEST_TYPE type)
 193 {
 194     return set_ntstatus( NtClearPowerRequest( request, type ));
 195 }