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Diffstat (limited to 'src/powermanagement/DPMSSupport.cpp')
| -rw-r--r-- | src/powermanagement/DPMSSupport.cpp | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/src/powermanagement/DPMSSupport.cpp b/src/powermanagement/DPMSSupport.cpp new file mode 100644 index 0000000000..3aefedddb6 --- /dev/null +++ b/src/powermanagement/DPMSSupport.cpp @@ -0,0 +1,287 @@ +/* + * Copyright (C) 2009-2013 Team XBMC + * http://xbmc.org + * + * This Program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This Program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with XBMC; see the file COPYING. If not, see + * <http://www.gnu.org/licenses/>. + * + */ + +#include "system.h" +#include "DPMSSupport.h" +#include "utils/log.h" +#include "windowing/WindowingFactory.h" +#include "utils/SystemInfo.h" +#include <assert.h> +#include <string> +#ifdef TARGET_WINDOWS +#include "guilib/GraphicContext.h" +#endif + +//////// Generic, non-platform-specific code + +static const char* const MODE_NAMES[DPMSSupport::NUM_MODES] = + { "STANDBY", "SUSPEND", "OFF" }; + +bool DPMSSupport::CheckValidMode(PowerSavingMode mode) +{ + if (mode < 0 || mode > NUM_MODES) + { + CLog::Log(LOGERROR, "Invalid power-saving mode %d", mode); + return false; + } + return true; +} + +const char* DPMSSupport::GetModeName(PowerSavingMode mode) +{ + if (!CheckValidMode(mode)) return NULL; + return MODE_NAMES[mode]; +} + +DPMSSupport::DPMSSupport() +{ + PlatformSpecificInit(); + + if (!m_supportedModes.empty()) + { + std::string modes_message; + for (size_t i = 0; i < m_supportedModes.size(); i++) + { + assert(CheckValidMode(m_supportedModes[i])); + modes_message += " "; + modes_message += MODE_NAMES[m_supportedModes[i]]; + } + CLog::Log(LOGDEBUG, "DPMS: supported power-saving modes:%s", + modes_message.c_str()); + } +} + +bool DPMSSupport::IsModeSupported(PowerSavingMode mode) const +{ + if (!CheckValidMode(mode)) return false; + for (size_t i = 0; i < m_supportedModes.size(); i++) + { + if (m_supportedModes[i] == mode) return true; + } + return false; +} + +bool DPMSSupport::EnablePowerSaving(PowerSavingMode mode) +{ + if (!CheckValidMode(mode)) return false; + if (!IsModeSupported(mode)) + { + CLog::Log(LOGERROR, "DPMS: power-saving mode %s is not supported", + MODE_NAMES[mode]); + return false; + } + + if (!PlatformSpecificEnablePowerSaving(mode)) return false; + + CLog::Log(LOGINFO, "DPMS: enabled power-saving mode %s", + GetModeName(mode)); + return true; +} + +bool DPMSSupport::DisablePowerSaving() +{ + if (!PlatformSpecificDisablePowerSaving()) return false; + CLog::Log(LOGINFO, "DPMS: disabled power-saving"); + return true; +} + +///////// Platform-specific support + +#if defined(HAS_GLX) +//// X Windows + +// Here's a sad story: our Windows-inspired BOOL type from linux/PlatformDefs.h +// is incompatible with the BOOL in X11's Xmd.h (int vs. unsigned char). +// This is not a good idea for a X11 app and it should +// probably be fixed. Meanwhile, we can work around it rather cleanly with +// the preprocessor (which is partly to blame for this needless conflict +// anyway). BOOL is not used in the DPMS APIs that we need. Try not to use +// BOOL in the remaining X11-specific code in this file, since X might +// someday use a #define instead of a typedef. +// Addendum: INT64 apparently hhas the same problem on x86_64. Oh well. +// Once again, INT64 is not used in the APIs we need, so we can #ifdef it away. +#define BOOL __X11_SPECIFIC_BOOL +#define INT64 __X11_SPECIFIC_INT64 +#include <X11/Xlib.h> +#include <X11/extensions/dpms.h> +#undef INT64 +#undef BOOL + +// Mapping of PowerSavingMode to X11's mode constants. +static const CARD16 X_DPMS_MODES[] = + { DPMSModeStandby, DPMSModeSuspend, DPMSModeOff }; + +void DPMSSupport::PlatformSpecificInit() +{ + Display* dpy = g_Windowing.GetDisplay(); + if (dpy == NULL) return; + + int event_base, error_base; // we ignore these + if (!DPMSQueryExtension(dpy, &event_base, &error_base)) { + CLog::Log(LOGINFO, "DPMS: X11 extension not present, power-saving" + " will not be available"); + return; + } + + if (!DPMSCapable(dpy)) { + CLog::Log(LOGINFO, "DPMS: display does not support power-saving"); + return; + } + + m_supportedModes.push_back(SUSPEND); // best compromise + m_supportedModes.push_back(OFF); // next best + m_supportedModes.push_back(STANDBY); // rather lame, < 80% power according to + // DPMS spec +} + +bool DPMSSupport::PlatformSpecificEnablePowerSaving(PowerSavingMode mode) +{ + Display* dpy = g_Windowing.GetDisplay(); + if (dpy == NULL) return false; + + // This is not needed on my ATI Radeon, but the docs say that DPMSForceLevel + // after a DPMSDisable (from SDL) should not normally work. + DPMSEnable(dpy); + DPMSForceLevel(dpy, X_DPMS_MODES[mode]); + // There shouldn't be any errors if we called DPMSEnable; if they do happen, + // they're asynchronous and messy to detect. + XFlush(dpy); + return true; +} + +bool DPMSSupport::PlatformSpecificDisablePowerSaving() +{ + Display* dpy = g_Windowing.GetDisplay(); + if (dpy == NULL) return false; + + DPMSForceLevel(dpy, DPMSModeOn); + DPMSDisable(dpy); + XFlush(dpy); + + g_Windowing.RecreateWindow(); + + return true; +} + +///// Add other platforms here. +#elif defined(TARGET_WINDOWS) +void DPMSSupport::PlatformSpecificInit() +{ + // Assume we support DPMS. Is there a way to test it? + m_supportedModes.push_back(OFF); + m_supportedModes.push_back(STANDBY); +} + +bool DPMSSupport::PlatformSpecificEnablePowerSaving(PowerSavingMode mode) +{ + if(!g_graphicsContext.IsFullScreenRoot()) + { + CLog::Log(LOGDEBUG, "DPMS: not in fullscreen, power saving disabled"); + return false; + } + switch(mode) + { + case OFF: + // Turn off display + return SendMessage(g_Windowing.GetHwnd(), WM_SYSCOMMAND, SC_MONITORPOWER, (LPARAM) 2) == 0; + case STANDBY: + // Set display to low power + return SendMessage(g_Windowing.GetHwnd(), WM_SYSCOMMAND, SC_MONITORPOWER, (LPARAM) 1) == 0; + default: + return true; + } +} + +bool DPMSSupport::PlatformSpecificDisablePowerSaving() +{ + // Turn display on + return SendMessage(g_Windowing.GetHwnd(), WM_SYSCOMMAND, SC_MONITORPOWER, (LPARAM) -1) == 0; +} + +#elif defined(TARGET_DARWIN_OSX) +#include <IOKit/IOKitLib.h> +#include <CoreFoundation/CFNumber.h> + +void DPMSSupport::PlatformSpecificInit() +{ + m_supportedModes.push_back(OFF); + m_supportedModes.push_back(STANDBY); +} + +bool DPMSSupport::PlatformSpecificEnablePowerSaving(PowerSavingMode mode) +{ + bool status; + // http://lists.apple.com/archives/Cocoa-dev/2007/Nov/msg00267.html + // This is an unsupported system call that might kernel panic on PPC boxes + // The reported OSX-PPC panic is unverified so we are going to enable this until + // we find out which OSX-PPC boxes have problems, then add detect/disable for those boxes. + io_registry_entry_t r = IORegistryEntryFromPath(kIOMasterPortDefault, "IOService:/IOResources/IODisplayWrangler"); + if(!r) return false; + + switch(mode) + { + case OFF: + // Turn off display + status = (IORegistryEntrySetCFProperty(r, CFSTR("IORequestIdle"), kCFBooleanTrue) == 0); + break; + case STANDBY: + // Set display to low power + status = (IORegistryEntrySetCFProperty(r, CFSTR("IORequestIdle"), kCFBooleanTrue) == 0); + break; + default: + status = false; + break; + } + return status; +} + +bool DPMSSupport::PlatformSpecificDisablePowerSaving() +{ + // http://lists.apple.com/archives/Cocoa-dev/2007/Nov/msg00267.html + // This is an unsupported system call that might kernel panic on PPC boxes + // The reported OSX-PPC panic is unverified so we are going to enable this until + // we find out which OSX-PPC boxes have problems, then add detect/disable for those boxes. + io_registry_entry_t r = IORegistryEntryFromPath(kIOMasterPortDefault, "IOService:/IOResources/IODisplayWrangler"); + if(!r) return false; + + // Turn display on + return (IORegistryEntrySetCFProperty(r, CFSTR("IORequestIdle"), kCFBooleanFalse) == 0); +} + +#else +// Not implemented on this platform +void DPMSSupport::PlatformSpecificInit() +{ + CLog::Log(LOGINFO, "DPMS: not supported on this platform"); +} + +bool DPMSSupport::PlatformSpecificEnablePowerSaving(PowerSavingMode mode) +{ + return false; +} + +bool DPMSSupport::PlatformSpecificDisablePowerSaving() +{ + return false; +} + +#endif // platform ifdefs + + |