2016-06-28 01:25:00 +03:00
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/GamepadPlatformService.h"
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#include "mozilla/dom/GamepadEventChannelParent.h"
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2020-10-28 15:29:56 +03:00
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#include "mozilla/dom/GamepadMonitoring.h"
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2020-10-07 20:25:26 +03:00
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#include "mozilla/dom/GamepadTestChannelParent.h"
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2016-06-28 01:25:00 +03:00
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#include "mozilla/ipc/BackgroundParent.h"
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#include "mozilla/Mutex.h"
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2020-12-15 23:16:02 +03:00
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#include "mozilla/StaticMutex.h"
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2016-08-23 07:09:32 +03:00
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#include "mozilla/Unused.h"
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2016-06-28 01:25:00 +03:00
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#include "nsCOMPtr.h"
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#include "nsHashKeys.h"
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using namespace mozilla::ipc;
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2020-11-04 20:04:01 +03:00
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namespace mozilla::dom {
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2016-06-28 01:25:00 +03:00
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namespace {
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// This is the singleton instance of GamepadPlatformService, can be called
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// by both background and monitor thread.
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2020-12-15 23:16:02 +03:00
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static StaticMutex gGamepadPlatformServiceSingletonMutex;
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2020-12-03 01:36:35 +03:00
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static StaticRefPtr<GamepadPlatformService> gGamepadPlatformServiceSingleton;
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2016-06-28 01:25:00 +03:00
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} // namespace
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2020-12-03 01:32:30 +03:00
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// static
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GamepadMonitoringState& GamepadMonitoringState::GetSingleton() {
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static GamepadMonitoringState sInstance{};
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return sInstance;
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2020-10-07 20:25:26 +03:00
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}
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2020-12-03 01:32:30 +03:00
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void GamepadMonitoringState::AddObserver(GamepadTestChannelParent* aParent) {
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2020-10-07 20:25:26 +03:00
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AssertIsOnBackgroundThread();
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MOZ_ASSERT(aParent);
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2020-12-03 01:32:30 +03:00
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MOZ_ALWAYS_TRUE(mObservers.append(aParent));
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2020-10-07 20:25:26 +03:00
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}
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2020-12-03 01:32:30 +03:00
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void GamepadMonitoringState::RemoveObserver(GamepadTestChannelParent* aParent) {
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2020-10-07 20:25:26 +03:00
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AssertIsOnBackgroundThread();
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MOZ_ASSERT(aParent);
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2020-12-03 01:32:30 +03:00
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WeakPtr<GamepadTestChannelParent>* observer = nullptr;
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for (auto& item : mObservers) {
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if (item == aParent) {
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observer = &item;
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}
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}
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MOZ_ASSERT(
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observer,
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"Attempted to remove a GamepadTestChannelParent that was never added");
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std::swap(*observer, mObservers.back());
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mObservers.popBack();
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2020-10-07 20:25:26 +03:00
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}
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2020-12-03 01:32:30 +03:00
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bool GamepadMonitoringState::IsMonitoring() const {
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2020-10-07 20:25:26 +03:00
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AssertIsOnBackgroundThread();
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return mIsMonitoring;
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}
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2020-12-03 01:32:30 +03:00
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void GamepadMonitoringState::Set(bool aIsMonitoring) {
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2020-10-07 20:25:26 +03:00
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AssertIsOnBackgroundThread();
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if (mIsMonitoring != aIsMonitoring) {
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mIsMonitoring = aIsMonitoring;
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for (auto& observer : mObservers) {
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2020-10-09 19:42:53 +03:00
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// Since each GamepadTestChannelParent removes itself in its dtor, this
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// should never be nullptr
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MOZ_RELEASE_ASSERT(observer);
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2020-10-07 20:25:26 +03:00
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observer->OnMonitoringStateChanged(aIsMonitoring);
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}
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}
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}
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2020-12-03 01:36:35 +03:00
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// This class is created to service one-or-more event channels
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// This implies an invariant - There is always at-least one event channel while
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// this class is alive. It should be created with a channel, and it should be
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// destroyed when the last channel is to be removed.
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GamepadPlatformService::GamepadPlatformService(
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RefPtr<GamepadEventChannelParent> aParent)
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2020-12-03 02:06:05 +03:00
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: mNextGamepadHandleValue(1),
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mMutex("mozilla::dom::GamepadPlatformService") {
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2020-12-03 01:36:35 +03:00
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AssertIsOnBackgroundThread();
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mChannelParents.AppendElement(std::move(aParent));
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MOZ_ASSERT(mChannelParents.Length() == 1);
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}
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2016-06-28 01:25:00 +03:00
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2020-12-03 01:36:35 +03:00
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GamepadPlatformService::~GamepadPlatformService() {
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AssertIsOnBackgroundThread();
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MOZ_ASSERT(mChannelParents.Length() == 1);
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}
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2016-06-28 01:25:00 +03:00
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// static
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2016-06-28 01:27:00 +03:00
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already_AddRefed<GamepadPlatformService>
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2016-06-28 01:25:00 +03:00
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GamepadPlatformService::GetParentService() {
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// GamepadPlatformService can only be accessed in parent process
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MOZ_ASSERT(XRE_IsParentProcess());
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2020-12-03 01:36:35 +03:00
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2020-12-15 23:16:02 +03:00
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// TODO - Remove this mutex once Bug 1682554 is fixed
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StaticMutexAutoLock lock(gGamepadPlatformServiceSingletonMutex);
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// TODO - Turn this back into an assertion after Bug 1682554 is fixed
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if (!gGamepadPlatformServiceSingleton) {
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return nullptr;
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}
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2020-12-03 01:36:35 +03:00
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return RefPtr<GamepadPlatformService>(gGamepadPlatformServiceSingleton)
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.forget();
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2016-06-28 01:25:00 +03:00
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}
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template <class T>
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2020-12-03 01:36:35 +03:00
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void GamepadPlatformService::NotifyGamepadChange(
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2020-12-03 02:06:05 +03:00
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GamepadHandle aHandle, const T& aInfo, const MutexAutoLock& aProofOfLock) {
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2016-06-28 01:25:00 +03:00
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// This method is called by monitor populated in
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// platform-dependent backends
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(!NS_IsMainThread());
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2020-12-03 01:36:35 +03:00
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aProofOfLock.AssertOwns(mMutex);
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2016-06-28 01:25:00 +03:00
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2017-07-17 06:44:39 +03:00
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GamepadChangeEventBody body(aInfo);
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2020-12-03 02:06:05 +03:00
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GamepadChangeEvent e(aHandle, body);
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2016-10-23 20:32:00 +03:00
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2016-06-28 01:25:00 +03:00
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for (uint32_t i = 0; i < mChannelParents.Length(); ++i) {
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mChannelParents[i]->DispatchUpdateEvent(e);
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}
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}
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2020-12-03 02:06:05 +03:00
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GamepadHandle GamepadPlatformService::AddGamepad(
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2016-06-28 01:25:00 +03:00
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const char* aID, GamepadMappingType aMapping, GamepadHand aHand,
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2020-12-03 02:06:05 +03:00
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uint32_t aNumButtons, uint32_t aNumAxes, uint32_t aNumHaptics,
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2019-05-30 01:15:23 +03:00
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uint32_t aNumLightIndicator, uint32_t aNumTouchEvents) {
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2016-06-28 01:25:00 +03:00
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// This method is called by monitor thread populated in
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// platform-dependent backends
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(!NS_IsMainThread());
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2020-12-03 02:06:05 +03:00
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GamepadHandle gamepadHandle{mNextGamepadHandleValue++,
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GamepadHandleKind::GamepadPlatformManager};
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2017-07-17 06:44:39 +03:00
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2017-07-14 11:55:52 +03:00
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// Only VR controllers has displayID, we give 0 to the general gamepads.
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2017-07-17 06:44:39 +03:00
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GamepadAdded a(NS_ConvertUTF8toUTF16(nsDependentCString(aID)), aMapping,
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2020-12-03 02:06:05 +03:00
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aHand, 0, aNumButtons, aNumAxes, aNumHaptics,
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aNumLightIndicator, aNumTouchEvents);
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2017-02-02 09:33:18 +03:00
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2020-12-03 01:36:35 +03:00
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MutexAutoLock autoLock(mMutex);
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2020-12-03 02:06:05 +03:00
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mGamepadAdded.emplace(gamepadHandle, a);
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NotifyGamepadChange<GamepadAdded>(gamepadHandle, a, autoLock);
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2020-12-03 01:36:35 +03:00
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2020-12-03 02:06:05 +03:00
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return gamepadHandle;
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2016-06-28 01:25:00 +03:00
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}
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2020-12-03 02:06:05 +03:00
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void GamepadPlatformService::RemoveGamepad(GamepadHandle aHandle) {
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2016-06-28 01:25:00 +03:00
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// This method is called by monitor thread populated in
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// platform-dependent backends
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(!NS_IsMainThread());
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2017-07-17 06:44:39 +03:00
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GamepadRemoved a;
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2020-12-03 01:36:35 +03:00
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MutexAutoLock autoLock(mMutex);
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2020-12-03 02:06:05 +03:00
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NotifyGamepadChange<GamepadRemoved>(aHandle, a, autoLock);
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mGamepadAdded.erase(aHandle);
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2016-06-28 01:25:00 +03:00
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}
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2020-12-03 02:06:05 +03:00
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void GamepadPlatformService::NewButtonEvent(GamepadHandle aHandle,
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2020-12-03 01:36:35 +03:00
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uint32_t aButton, bool aPressed,
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bool aTouched, double aValue) {
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2016-06-28 01:25:00 +03:00
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// This method is called by monitor thread populated in
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// platform-dependent backends
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(!NS_IsMainThread());
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2017-07-17 06:44:39 +03:00
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GamepadButtonInformation a(aButton, aValue, aPressed, aTouched);
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2020-12-03 01:36:35 +03:00
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MutexAutoLock autoLock(mMutex);
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2020-12-03 02:06:05 +03:00
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NotifyGamepadChange<GamepadButtonInformation>(aHandle, a, autoLock);
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2016-06-28 01:25:00 +03:00
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}
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2020-12-03 02:06:05 +03:00
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void GamepadPlatformService::NewButtonEvent(GamepadHandle aHandle,
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2020-12-03 01:36:35 +03:00
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uint32_t aButton, bool aPressed,
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double aValue) {
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2019-07-15 10:36:36 +03:00
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// This method is called by monitor thread populated in
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// platform-dependent backends
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(!NS_IsMainThread());
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// When only a digital button is available the value will be synthesized.
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2020-12-03 02:06:05 +03:00
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NewButtonEvent(aHandle, aButton, aPressed, aPressed, aValue);
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2019-07-15 10:36:36 +03:00
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}
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2020-12-03 02:06:05 +03:00
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void GamepadPlatformService::NewButtonEvent(GamepadHandle aHandle,
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2020-12-03 01:36:35 +03:00
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uint32_t aButton, bool aPressed,
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bool aTouched) {
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2017-04-07 04:35:13 +03:00
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// This method is called by monitor thread populated in
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// platform-dependent backends
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(!NS_IsMainThread());
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// When only a digital button is available the value will be synthesized.
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2020-12-03 02:06:05 +03:00
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NewButtonEvent(aHandle, aButton, aPressed, aTouched, aPressed ? 1.0L : 0.0L);
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2017-04-07 04:35:13 +03:00
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}
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2020-12-03 02:06:05 +03:00
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void GamepadPlatformService::NewButtonEvent(GamepadHandle aHandle,
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2020-12-03 01:36:35 +03:00
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uint32_t aButton, bool aPressed) {
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2016-06-28 01:25:00 +03:00
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// This method is called by monitor thread populated in
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// platform-dependent backends
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(!NS_IsMainThread());
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// When only a digital button is available the value will be synthesized.
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2020-12-03 02:06:05 +03:00
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NewButtonEvent(aHandle, aButton, aPressed, aPressed, aPressed ? 1.0L : 0.0L);
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2016-06-28 01:25:00 +03:00
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}
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2020-12-03 02:06:05 +03:00
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void GamepadPlatformService::NewAxisMoveEvent(GamepadHandle aHandle,
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2020-12-03 01:36:35 +03:00
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uint32_t aAxis, double aValue) {
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2016-06-28 01:25:00 +03:00
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// This method is called by monitor thread populated in
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// platform-dependent backends
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(!NS_IsMainThread());
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2017-07-17 06:44:39 +03:00
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GamepadAxisInformation a(aAxis, aValue);
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2020-12-03 01:36:35 +03:00
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MutexAutoLock autoLock(mMutex);
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2020-12-03 02:06:05 +03:00
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NotifyGamepadChange<GamepadAxisInformation>(aHandle, a, autoLock);
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2016-06-28 01:25:00 +03:00
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}
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2019-05-30 01:15:23 +03:00
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void GamepadPlatformService::NewLightIndicatorTypeEvent(
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2020-12-03 02:06:05 +03:00
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GamepadHandle aHandle, uint32_t aLight, GamepadLightIndicatorType aType) {
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2019-05-30 01:15:23 +03:00
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// This method is called by monitor thread populated in
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// platform-dependent backends
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(!NS_IsMainThread());
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GamepadLightIndicatorTypeInformation a(aLight, aType);
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2020-12-03 01:36:35 +03:00
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MutexAutoLock autoLock(mMutex);
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2020-12-03 02:06:05 +03:00
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NotifyGamepadChange<GamepadLightIndicatorTypeInformation>(aHandle, a,
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2020-12-03 01:36:35 +03:00
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autoLock);
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2019-05-30 01:15:23 +03:00
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}
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2020-12-03 02:06:05 +03:00
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void GamepadPlatformService::NewPoseEvent(GamepadHandle aHandle,
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2019-05-30 01:15:23 +03:00
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const GamepadPoseState& aState) {
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2017-02-02 10:00:51 +03:00
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// This method is called by monitor thread populated in
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// platform-dependent backends
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(!NS_IsMainThread());
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2019-05-30 01:15:23 +03:00
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GamepadPoseInformation a(aState);
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2020-12-03 01:36:35 +03:00
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MutexAutoLock autoLock(mMutex);
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2020-12-03 02:06:05 +03:00
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NotifyGamepadChange<GamepadPoseInformation>(aHandle, a, autoLock);
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2017-02-02 10:00:51 +03:00
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}
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2019-05-30 01:15:23 +03:00
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void GamepadPlatformService::NewMultiTouchEvent(
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2020-12-03 02:06:05 +03:00
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GamepadHandle aHandle, uint32_t aTouchArrayIndex,
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2019-05-30 01:15:23 +03:00
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const GamepadTouchState& aState) {
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// This method is called by monitor thread populated in
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// platform-dependent backends
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(!NS_IsMainThread());
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GamepadTouchInformation a(aTouchArrayIndex, aState);
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2020-12-03 01:36:35 +03:00
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MutexAutoLock autoLock(mMutex);
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2020-12-03 02:06:05 +03:00
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NotifyGamepadChange<GamepadTouchInformation>(aHandle, a, autoLock);
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2019-05-30 01:15:23 +03:00
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}
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2020-12-03 01:36:35 +03:00
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void GamepadPlatformService::AddChannelParentInternal(
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const RefPtr<GamepadEventChannelParent>& aParent) {
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MutexAutoLock autoLock(mMutex);
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2020-12-15 03:01:19 +03:00
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MOZ_RELEASE_ASSERT(!mChannelParents.Contains(aParent));
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2020-12-03 01:36:35 +03:00
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mChannelParents.AppendElement(aParent);
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// Inform the new channel of all the gamepads that have already been added
|
|
|
|
for (const auto& evt : mGamepadAdded) {
|
|
|
|
GamepadChangeEventBody body(evt.second);
|
2020-12-03 02:06:05 +03:00
|
|
|
GamepadChangeEvent e(evt.first, body);
|
2020-12-03 01:36:35 +03:00
|
|
|
aParent->DispatchUpdateEvent(e);
|
|
|
|
}
|
2016-06-28 01:25:00 +03:00
|
|
|
}
|
|
|
|
|
2020-12-03 01:36:35 +03:00
|
|
|
bool GamepadPlatformService::RemoveChannelParentInternal(
|
2016-06-28 01:25:00 +03:00
|
|
|
GamepadEventChannelParent* aParent) {
|
2020-12-03 01:36:35 +03:00
|
|
|
MutexAutoLock autoLock(mMutex);
|
|
|
|
|
2020-12-15 03:01:19 +03:00
|
|
|
MOZ_RELEASE_ASSERT(mChannelParents.Contains(aParent));
|
2020-12-03 01:36:35 +03:00
|
|
|
|
|
|
|
// If there is only one channel left, we destroy the singleton instead of
|
|
|
|
// unregistering the channel
|
|
|
|
if (mChannelParents.Length() == 1) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
mChannelParents.RemoveElement(aParent);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
// static
|
|
|
|
void GamepadPlatformService::AddChannelParent(
|
|
|
|
const RefPtr<GamepadEventChannelParent>& aParent) {
|
2016-06-28 01:25:00 +03:00
|
|
|
// mChannelParents can only be modified once GamepadEventChannelParent
|
|
|
|
// is created or removed in Background thread
|
|
|
|
AssertIsOnBackgroundThread();
|
|
|
|
MOZ_ASSERT(aParent);
|
|
|
|
|
2020-12-15 23:16:02 +03:00
|
|
|
{
|
|
|
|
StaticMutexAutoLock lock(gGamepadPlatformServiceSingletonMutex);
|
|
|
|
|
|
|
|
if (gGamepadPlatformServiceSingleton) {
|
|
|
|
gGamepadPlatformServiceSingleton->AddChannelParentInternal(aParent);
|
|
|
|
return;
|
|
|
|
}
|
2020-08-07 16:32:17 +03:00
|
|
|
|
2020-12-15 23:16:02 +03:00
|
|
|
gGamepadPlatformServiceSingleton =
|
|
|
|
RefPtr<GamepadPlatformService>(new GamepadPlatformService{aParent});
|
|
|
|
}
|
2020-10-07 20:25:26 +03:00
|
|
|
|
2020-12-03 01:36:35 +03:00
|
|
|
StartGamepadMonitoring();
|
2020-12-03 01:32:30 +03:00
|
|
|
GamepadMonitoringState::GetSingleton().Set(true);
|
2016-10-23 20:32:00 +03:00
|
|
|
}
|
|
|
|
|
2020-12-03 01:36:35 +03:00
|
|
|
// static
|
2016-06-28 01:25:00 +03:00
|
|
|
void GamepadPlatformService::RemoveChannelParent(
|
|
|
|
GamepadEventChannelParent* aParent) {
|
|
|
|
// mChannelParents can only be modified once GamepadEventChannelParent
|
|
|
|
// is created or removed in Background thread
|
|
|
|
AssertIsOnBackgroundThread();
|
|
|
|
MOZ_ASSERT(aParent);
|
2020-12-15 03:01:19 +03:00
|
|
|
|
2020-12-15 23:16:02 +03:00
|
|
|
{
|
|
|
|
StaticMutexAutoLock lock(gGamepadPlatformServiceSingletonMutex);
|
|
|
|
|
|
|
|
MOZ_RELEASE_ASSERT(gGamepadPlatformServiceSingleton);
|
2016-06-28 01:25:00 +03:00
|
|
|
|
2020-12-15 23:16:02 +03:00
|
|
|
// RemoveChannelParentInternal will refuse to remove the last channel
|
|
|
|
// In that case, we should destroy the singleton
|
|
|
|
if (gGamepadPlatformServiceSingleton->RemoveChannelParentInternal(
|
|
|
|
aParent)) {
|
|
|
|
return;
|
|
|
|
}
|
2020-08-07 16:32:17 +03:00
|
|
|
}
|
|
|
|
|
2020-12-03 01:32:30 +03:00
|
|
|
GamepadMonitoringState::GetSingleton().Set(false);
|
2020-08-07 16:27:55 +03:00
|
|
|
StopGamepadMonitoring();
|
2020-12-15 23:16:02 +03:00
|
|
|
|
|
|
|
StaticMutexAutoLock lock(gGamepadPlatformServiceSingletonMutex);
|
2020-12-15 03:01:19 +03:00
|
|
|
|
|
|
|
// We should never be destroying the singleton with event channels left in it
|
|
|
|
MOZ_RELEASE_ASSERT(
|
|
|
|
gGamepadPlatformServiceSingleton->mChannelParents.Length() == 1);
|
2016-06-28 01:25:00 +03:00
|
|
|
|
2020-12-15 03:01:19 +03:00
|
|
|
// The only reference to the singleton should be the global one
|
2020-12-03 01:36:35 +03:00
|
|
|
MOZ_RELEASE_ASSERT(gGamepadPlatformServiceSingleton->mRefCnt.get() == 1);
|
2016-06-28 01:25:00 +03:00
|
|
|
|
2020-12-03 01:36:35 +03:00
|
|
|
gGamepadPlatformServiceSingleton = nullptr;
|
2016-06-28 01:25:00 +03:00
|
|
|
}
|
|
|
|
|
2020-11-04 20:04:01 +03:00
|
|
|
} // namespace mozilla::dom
|