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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 14:29:10 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 14:29:10 +0000
commit2aa4a82499d4becd2284cdb482213d541b8804dd (patch)
treeb80bf8bf13c3766139fbacc530efd0dd9d54394c /dom/gamepad/GamepadPlatformService.h
parentInitial commit. (diff)
downloadfirefox-upstream.tar.xz
firefox-upstream.zip
Adding upstream version 86.0.1.upstream/86.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/gamepad/GamepadPlatformService.h')
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diff --git a/dom/gamepad/GamepadPlatformService.h b/dom/gamepad/GamepadPlatformService.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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_dom_GamepadPlatformService_h_
+#define mozilla_dom_GamepadPlatformService_h_
+
+#include "mozilla/dom/GamepadBinding.h"
+#include "mozilla/dom/GamepadHandle.h"
+
+#include <map>
+#include "mozilla/Mutex.h"
+#include "mozilla/StaticPtr.h"
+#include "mozilla/Vector.h"
+#include "mozilla/WeakPtr.h"
+
+namespace mozilla {
+namespace dom {
+
+class GamepadAdded;
+class GamepadEventChannelParent;
+enum class GamepadLightIndicatorType : uint8_t;
+struct GamepadPoseState;
+class GamepadTestChannelParent;
+struct GamepadTouchState;
+class GamepadPlatformService;
+
+class GamepadMonitoringState {
+ public:
+ static GamepadMonitoringState& GetSingleton();
+
+ void AddObserver(GamepadTestChannelParent* aParent);
+ void RemoveObserver(GamepadTestChannelParent* aParent);
+
+ bool IsMonitoring() const;
+
+ GamepadMonitoringState(const GamepadMonitoringState&) = delete;
+ GamepadMonitoringState(GamepadMonitoringState&&) = delete;
+ GamepadMonitoringState& operator=(const GamepadMonitoringState) = delete;
+ GamepadMonitoringState& operator=(GamepadMonitoringState&&) = delete;
+
+ private:
+ GamepadMonitoringState() = default;
+ ~GamepadMonitoringState() = default;
+
+ void Set(bool aIsMonitoring);
+
+ bool mIsMonitoring{false};
+ Vector<WeakPtr<GamepadTestChannelParent>> mObservers;
+
+ friend class mozilla::dom::GamepadPlatformService;
+};
+
+// Platform Service for building and transmitting IPDL messages
+// through the HAL sandbox. Used by platform specific
+// Gamepad implementations
+//
+// This class can be accessed by the following 2 threads :
+// 1. Background thread:
+// This thread takes charge of IPDL communications
+// between here and DOM side
+//
+// 2. Monitor Thread:
+// This thread is populated in platform-dependent backends, which
+// is in charge of processing gamepad hardware events from OS
+class GamepadPlatformService final {
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(GamepadPlatformService)
+ public:
+ // Get the singleton service
+ static already_AddRefed<GamepadPlatformService> GetParentService();
+
+ // Add a gamepad to the list of known gamepads, and return its handle.
+ GamepadHandle AddGamepad(const char* aID, GamepadMappingType aMapping,
+ GamepadHand aHand, uint32_t aNumButtons,
+ uint32_t aNumAxes, uint32_t aNumHaptics,
+ uint32_t aNumLightIndicator,
+ uint32_t aNumTouchEvents);
+ // Remove the gamepad at |aHandle| from the list of known gamepads.
+ void RemoveGamepad(GamepadHandle aHandle);
+
+ // Update the state of |aButton| for the gamepad at |aHandle| for all
+ // windows that are listening and visible, and fire one of
+ // a gamepadbutton{up,down} event at them as well.
+ // aPressed is used for digital buttons, aTouched is for detecting touched
+ // events, aValue is for analog buttons.
+ void NewButtonEvent(GamepadHandle aHandle, uint32_t aButton, bool aPressed,
+ bool aTouched, double aValue);
+ // When only a digital button is available the value will be synthesized.
+ void NewButtonEvent(GamepadHandle aHandle, uint32_t aButton, bool aPressed);
+ // When only a digital button are available the value will be synthesized.
+ void NewButtonEvent(GamepadHandle aHandle, uint32_t aButton, bool aPressed,
+ bool aTouched);
+ // When only a digital button are available the value will be synthesized.
+ void NewButtonEvent(GamepadHandle aHandle, uint32_t aButton, bool aPressed,
+ double aValue);
+ // Update the state of |aAxis| for the gamepad at |aHandle| for all
+ // windows that are listening and visible, and fire a gamepadaxismove
+ // event at them as well.
+ void NewAxisMoveEvent(GamepadHandle aHandle, uint32_t aAxis, double aValue);
+ // Update the state of |aState| for the gamepad at |aHandle| for all
+ // windows that are listening and visible.
+ void NewPoseEvent(GamepadHandle aHandle, const GamepadPoseState& aState);
+ // Update the type of |aType| for the gamepad at |aHandle| for all
+ // windows that are listening and visible.
+ void NewLightIndicatorTypeEvent(GamepadHandle aHandle, uint32_t aLight,
+ GamepadLightIndicatorType aType);
+ // Update the state of |aState| for the gamepad at |aHandle| with
+ // |aTouchArrayIndex| for all windows that are listening and visible.
+ void NewMultiTouchEvent(GamepadHandle aHandle, uint32_t aTouchArrayIndex,
+ const GamepadTouchState& aState);
+
+ // When shutting down the platform communications for gamepad, also reset the
+ // indexes.
+ void ResetGamepadIndexes();
+
+ // Add IPDL parent instance
+ void AddChannelParent(GamepadEventChannelParent* aParent);
+
+ // Remove IPDL parent instance
+ void RemoveChannelParent(GamepadEventChannelParent* aParent);
+
+ void MaybeShutdown();
+
+ private:
+ GamepadPlatformService();
+ ~GamepadPlatformService();
+ template <class T>
+ void NotifyGamepadChange(GamepadHandle aHandle, const T& aInfo);
+
+ void Cleanup();
+
+ // mNextGamepadHandleValue can only be accessed by monitor thread
+ uint32_t mNextGamepadHandleValue;
+
+ // mChannelParents stores all the GamepadEventChannelParent instances
+ // which may be accessed by both background thread and monitor thread
+ // simultaneously, so we have a mutex to prevent race condition
+ nsTArray<RefPtr<GamepadEventChannelParent>> mChannelParents;
+
+ // This mutex protects mChannelParents from race condition
+ // between background and monitor thread
+ Mutex mMutex;
+
+ std::map<GamepadHandle, GamepadAdded> mGamepadAdded;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif