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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set sw=2 ts=8 et ft=cpp : */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_Hal_h
#define mozilla_Hal_h
#include "base/basictypes.h"
#include "base/platform_thread.h"
#include "nsTArray.h"
#include "mozilla/hal_sandbox/PHal.h"
#include "mozilla/HalBatteryInformation.h"
#include "mozilla/HalNetworkInformation.h"
#include "mozilla/HalScreenConfiguration.h"
#include "mozilla/HalWakeLockInformation.h"
#include "mozilla/HalTypes.h"
#include "mozilla/Types.h"
/*
* Hal.h contains the public Hal API.
*
* By default, this file defines its functions in the hal namespace, but if
* MOZ_HAL_NAMESPACE is defined, we'll define our functions in that namespace.
*
* This is used by HalImpl.h and HalSandbox.h, which define copies of all the
* functions here in the hal_impl and hal_sandbox namespaces.
*/
class nsPIDOMWindowInner;
#ifndef MOZ_HAL_NAMESPACE
# define MOZ_HAL_NAMESPACE hal
# define MOZ_DEFINED_HAL_NAMESPACE 1
#endif
namespace mozilla {
namespace hal {
class WindowIdentifier;
} // namespace hal
namespace MOZ_HAL_NAMESPACE {
/**
* Initializes the HAL. This must be called before any other HAL function.
*/
void Init();
/**
* Shuts down the HAL. Besides freeing all the used resources this will check
* that all observers have been properly deregistered and assert if not.
*/
void Shutdown();
/**
* Turn the default vibrator device on/off per the pattern specified
* by |pattern|. Each element in the pattern is the number of
* milliseconds to turn the vibrator on or off. The first element in
* |pattern| is an "on" element, the next is "off", and so on.
*
* If |pattern| is empty, any in-progress vibration is canceled.
*
* Only an active window within an active tab may call Vibrate; calls
* from inactive windows and windows on inactive tabs do nothing.
*
* If you're calling hal::Vibrate from the outside world, pass an
* nsIDOMWindow* in place of the WindowIdentifier parameter.
* The method with WindowIdentifier will be called automatically.
*/
void Vibrate(const nsTArray<uint32_t>& pattern, nsPIDOMWindowInner* aWindow);
void Vibrate(const nsTArray<uint32_t>& pattern, hal::WindowIdentifier&& id);
/**
* Cancel a vibration started by the content window identified by
* WindowIdentifier.
*
* If the window was the last window to start a vibration, the
* cancellation request will go through even if the window is not
* active.
*
* As with hal::Vibrate(), if you're calling hal::CancelVibrate from the outside
* world, pass an nsIDOMWindow*. The method with WindowIdentifier will be called
* automatically.
*/
void CancelVibrate(nsPIDOMWindowInner* aWindow);
void CancelVibrate(hal::WindowIdentifier&& id);
#define MOZ_DEFINE_HAL_OBSERVER(name_) \
/** \
* Inform the backend there is a new |name_| observer. \
* @param aObserver The observer that should be added. \
*/ \
void Register##name_##Observer(hal::name_##Observer* aObserver); \
/** \
* Inform the backend a |name_| observer unregistered. \
* @param aObserver The observer that should be removed. \
*/ \
void Unregister##name_##Observer(hal::name_##Observer* aObserver);
MOZ_DEFINE_HAL_OBSERVER(Battery);
/**
* Returns the current battery information.
*/
void GetCurrentBatteryInformation(hal::BatteryInformation* aBatteryInfo);
/**
* Notify of a change in the battery state.
* @param aBatteryInfo The new battery information.
*/
void NotifyBatteryChange(const hal::BatteryInformation& aBatteryInfo);
/**
* Register an observer for the sensor of given type.
*
* The observer will receive data whenever the data generated by the
* sensor is avaiable.
*/
void RegisterSensorObserver(hal::SensorType aSensor,
hal::ISensorObserver* aObserver);
/**
* Unregister an observer for the sensor of given type.
*/
void UnregisterSensorObserver(hal::SensorType aSensor,
hal::ISensorObserver* aObserver);
/**
* Post a value generated by a sensor.
*
* This API is internal to hal; clients shouldn't call it directly.
*/
void NotifySensorChange(const hal::SensorData& aSensorData);
/**
* Enable sensor notifications from the backend
*
* This method is only visible from implementation of sensor manager.
* Rest of the system should not try this.
*/
void EnableSensorNotifications(hal::SensorType aSensor);
/**
* Disable sensor notifications from the backend
*
* This method is only visible from implementation of sensor manager.
* Rest of the system should not try this.
*/
void DisableSensorNotifications(hal::SensorType aSensor);
MOZ_DEFINE_HAL_OBSERVER(Network);
/**
* Returns the current network information.
*/
void GetCurrentNetworkInformation(hal::NetworkInformation* aNetworkInfo);
/**
* Notify of a change in the network state.
* @param aNetworkInfo The new network information.
*/
void NotifyNetworkChange(const hal::NetworkInformation& aNetworkInfo);
/**
* Enable wake lock notifications from the backend.
*
* This method is only used by WakeLockObserversManager.
*/
void EnableWakeLockNotifications();
/**
* Disable wake lock notifications from the backend.
*
* This method is only used by WakeLockObserversManager.
*/
void DisableWakeLockNotifications();
MOZ_DEFINE_HAL_OBSERVER(WakeLock);
/**
* Adjust a wake lock's counts on behalf of a given process.
*
* In most cases, you shouldn't need to pass the aProcessID argument; the
* default of CONTENT_PROCESS_ID_UNKNOWN is probably what you want.
*
* @param aTopic lock topic
* @param aLockAdjust to increase or decrease active locks
* @param aHiddenAdjust to increase or decrease hidden locks
* @param aProcessID indicates which process we're modifying the wake lock
* on behalf of. It is interpreted as
*
* CONTENT_PROCESS_ID_UNKNOWN: The current process
* CONTENT_PROCESS_ID_MAIN: The root process
* X: The process with ContentChild::GetID() == X
*/
void ModifyWakeLock(const nsAString& aTopic, hal::WakeLockControl aLockAdjust,
hal::WakeLockControl aHiddenAdjust,
uint64_t aProcessID = hal::CONTENT_PROCESS_ID_UNKNOWN);
/**
* Query the wake lock numbers of aTopic.
* @param aTopic lock topic
* @param aWakeLockInfo wake lock numbers
*/
void GetWakeLockInfo(const nsAString& aTopic,
hal::WakeLockInformation* aWakeLockInfo);
/**
* Notify of a change in the wake lock state.
* @param aWakeLockInfo The new wake lock information.
*/
void NotifyWakeLockChange(const hal::WakeLockInformation& aWakeLockInfo);
MOZ_DEFINE_HAL_OBSERVER(ScreenConfiguration);
/**
* Returns the current screen configuration.
*/
void GetCurrentScreenConfiguration(
hal::ScreenConfiguration* aScreenConfiguration);
/**
* Notify of a change in the screen configuration.
* @param aScreenConfiguration The new screen orientation.
*/
void NotifyScreenConfigurationChange(
const hal::ScreenConfiguration& aScreenConfiguration);
/**
* Lock the screen orientation to the specific orientation.
* @return Whether the lock has been accepted.
*/
[[nodiscard]] bool LockScreenOrientation(
const hal::ScreenOrientation& aOrientation);
/**
* Unlock the screen orientation.
*/
void UnlockScreenOrientation();
/**
* Set the priority of the given process.
*
* Exactly what this does will vary between platforms. On *nix we might give
* background processes higher nice values. On other platforms, we might
* ignore this call entirely.
*/
void SetProcessPriority(int aPid, hal::ProcessPriority aPriority);
} // namespace MOZ_HAL_NAMESPACE
} // namespace mozilla
#ifdef MOZ_DEFINED_HAL_NAMESPACE
# undef MOZ_DEFINED_HAL_NAMESPACE
# undef MOZ_HAL_NAMESPACE
#endif
#endif // mozilla_Hal_h