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Diffstat (limited to 'hal/Hal.h')
| -rw-r--r-- | hal/Hal.h | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/hal/Hal.h b/hal/Hal.h new file mode 100644 index 0000000000..b5751a1f1f --- /dev/null +++ b/hal/Hal.h @@ -0,0 +1,268 @@ +/* -*- 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(); + +/** + * Return true if the current platform supports the setting of process + * priority. + */ +bool SetProcessPrioritySupported(); + +/** + * 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 |