Merge "Add a flag for refresh rate switching" into qt-qpr1-dev
diff --git a/services/inputflinger/Android.bp b/services/inputflinger/Android.bp
index 8dd4d1d..576c8d8 100644
--- a/services/inputflinger/Android.bp
+++ b/services/inputflinger/Android.bp
@@ -47,7 +47,6 @@
"liblog",
"libutils",
"libui",
- "server_configurable_flags",
],
cflags: [
diff --git a/services/inputflinger/InputClassifier.cpp b/services/inputflinger/InputClassifier.cpp
index ef1a224..cda0e0c 100644
--- a/services/inputflinger/InputClassifier.cpp
+++ b/services/inputflinger/InputClassifier.cpp
@@ -27,7 +27,6 @@
#if defined(__linux__)
#include <pthread.h>
#endif
-#include <server_configurable_flags/get_flags.h>
#include <unordered_set>
#include <android/hardware/input/classifier/1.0/IInputClassifier.h>
@@ -46,13 +45,6 @@
namespace android {
-static constexpr bool DEBUG = false;
-
-// Category (=namespace) name for the input settings that are applied at boot time
-static const char* INPUT_NATIVE_BOOT = "input_native_boot";
-// Feature flag name for the deep press feature
-static const char* DEEP_PRESS_ENABLED = "deep_press_enabled";
-
//Max number of elements to store in mEvents.
static constexpr size_t MAX_EVENTS = 5;
@@ -79,20 +71,6 @@
return args.source == AINPUT_SOURCE_TOUCHPAD || args.source == AINPUT_SOURCE_TOUCHSCREEN;
}
-// Check if the "deep touch" feature is on.
-static bool deepPressEnabled() {
- std::string flag_value = server_configurable_flags::GetServerConfigurableFlag(
- INPUT_NATIVE_BOOT, DEEP_PRESS_ENABLED, "true");
- std::transform(flag_value.begin(), flag_value.end(), flag_value.begin(), ::tolower);
- if (flag_value == "1" || flag_value == "true") {
- ALOGI("Deep press feature enabled.");
- return true;
- }
- ALOGI("Deep press feature is not enabled.");
- return false;
-}
-
-
// --- ClassifierEvent ---
ClassifierEvent::ClassifierEvent(std::unique_ptr<NotifyMotionArgs> args) :
@@ -141,53 +119,40 @@
// --- MotionClassifier ---
-MotionClassifier::MotionClassifier(sp<android::hardware::hidl_death_recipient> deathRecipient) :
- mDeathRecipient(deathRecipient), mEvents(MAX_EVENTS) {
- mHalThread = std::thread(&MotionClassifier::callInputClassifierHal, this);
-#if defined(__linux__)
- // Set the thread name for debugging
- pthread_setname_np(mHalThread.native_handle(), "InputClassifier");
-#endif
-}
-
-/**
- * This function may block for some time to initialize the HAL, so it should only be called
- * from the "InputClassifier HAL" thread.
- */
-bool MotionClassifier::init() {
- ensureHalThread(__func__);
- sp<android::hardware::input::classifier::V1_0::IInputClassifier> service =
- classifier::V1_0::IInputClassifier::getService();
- if (!service) {
- // Not really an error, maybe the device does not have this HAL,
- // but somehow the feature flag is flipped
- ALOGI("Could not obtain InputClassifier HAL");
- return false;
- }
-
- sp<android::hardware::hidl_death_recipient> recipient = mDeathRecipient.promote();
- if (recipient != nullptr) {
- const bool linked = service->linkToDeath(recipient, 0 /* cookie */).withDefault(false);
- if (!linked) {
- ALOGE("Could not link MotionClassifier to the HAL death");
- return false;
- }
- }
-
+MotionClassifier::MotionClassifier(
+ sp<android::hardware::input::classifier::V1_0::IInputClassifier> service)
+ : mEvents(MAX_EVENTS), mService(service) {
// Under normal operation, we do not need to reset the HAL here. But in the case where system
// crashed, but HAL didn't, we may be connecting to an existing HAL process that might already
// have received events in the past. That means, that HAL could be in an inconsistent state
// once it receives events from the newly created MotionClassifier.
mEvents.push(ClassifierEvent::createHalResetEvent());
- {
- std::scoped_lock lock(mLock);
- if (mService) {
- ALOGE("MotionClassifier::%s should only be called once", __func__);
- }
- mService = service;
+ mHalThread = std::thread(&MotionClassifier::processEvents, this);
+#if defined(__linux__)
+ // Set the thread name for debugging
+ pthread_setname_np(mHalThread.native_handle(), "InputClassifier");
+#endif
+}
+
+std::unique_ptr<MotionClassifierInterface> MotionClassifier::create(
+ sp<android::hardware::hidl_death_recipient> deathRecipient) {
+ sp<android::hardware::input::classifier::V1_0::IInputClassifier> service =
+ classifier::V1_0::IInputClassifier::getService();
+ if (!service) {
+ // Not really an error, maybe the device does not have this HAL,
+ // but somehow the feature flag is flipped
+ ALOGI("Could not obtain InputClassifier HAL");
+ return nullptr;
}
- return true;
+
+ const bool linked = service->linkToDeath(deathRecipient, 0 /* cookie */).withDefault(false);
+ if (!linked) {
+ ALOGE("Could not link death recipient to the HAL death");
+ return nullptr;
+ }
+ // Using 'new' to access a non-public constructor
+ return std::unique_ptr<MotionClassifier>(new MotionClassifier(service));
}
MotionClassifier::~MotionClassifier() {
@@ -195,14 +160,6 @@
mHalThread.join();
}
-void MotionClassifier::ensureHalThread(const char* function) {
- if (DEBUG) {
- if (std::this_thread::get_id() != mHalThread.get_id()) {
- LOG_FATAL("Function %s should only be called from InputClassifier thread", function);
- }
- }
-}
-
/**
* Obtain the classification from the HAL for a given MotionEvent.
* Should only be called from the InputClassifier thread (mHalThread).
@@ -213,23 +170,7 @@
* To remove any possibility of negatively affecting the touch latency, the HAL
* is called from a dedicated thread.
*/
-void MotionClassifier::callInputClassifierHal() {
- ensureHalThread(__func__);
- const bool initialized = init();
- if (!initialized) {
- // MotionClassifier no longer useful.
- // Deliver death notification from a separate thread
- // because ~MotionClassifier may be invoked, which calls mHalThread.join()
- std::thread([deathRecipient = mDeathRecipient](){
- sp<android::hardware::hidl_death_recipient> recipient = deathRecipient.promote();
- if (recipient != nullptr) {
- recipient->serviceDied(0 /*cookie*/, nullptr);
- }
- }).detach();
- return;
- }
- // From this point on, mService is guaranteed to be non-null.
-
+void MotionClassifier::processEvents() {
while (true) {
ClassifierEvent event = mEvents.pop();
bool halResponseOk = true;
@@ -383,24 +324,41 @@
}
}
+// --- HalDeathRecipient
+
+InputClassifier::HalDeathRecipient::HalDeathRecipient(InputClassifier& parent) : mParent(parent) {}
+
+void InputClassifier::HalDeathRecipient::serviceDied(
+ uint64_t cookie, const wp<android::hidl::base::V1_0::IBase>& who) {
+ sp<android::hidl::base::V1_0::IBase> service = who.promote();
+ if (service) {
+ service->unlinkToDeath(this);
+ }
+ mParent.setMotionClassifier(nullptr);
+}
// --- InputClassifier ---
-InputClassifier::InputClassifier(const sp<InputListenerInterface>& listener) :
- mListener(listener) {
- // The rest of the initialization is done in onFirstRef, because we need to obtain
- // an sp to 'this' in order to register for HAL death notifications
-}
+InputClassifier::InputClassifier(const sp<InputListenerInterface>& listener)
+ : mListener(listener), mHalDeathRecipient(new HalDeathRecipient(*this)) {}
-void InputClassifier::onFirstRef() {
- if (!deepPressEnabled()) {
- // If feature is not enabled, MotionClassifier should stay null to avoid unnecessary work.
- // When MotionClassifier is null, InputClassifier will forward all events
- // to the next InputListener, unmodified.
- return;
+void InputClassifier::setMotionClassifierEnabled(bool enabled) {
+ if (enabled) {
+ ALOGI("Enabling motion classifier");
+ if (mInitializeMotionClassifierThread.joinable()) {
+ mInitializeMotionClassifierThread.join();
+ }
+ mInitializeMotionClassifierThread = std::thread(
+ [this] { setMotionClassifier(MotionClassifier::create(mHalDeathRecipient)); });
+#if defined(__linux__)
+ // Set the thread name for debugging
+ pthread_setname_np(mInitializeMotionClassifierThread.native_handle(),
+ "Create MotionClassifier");
+#endif
+ } else {
+ ALOGI("Disabling motion classifier");
+ setMotionClassifier(nullptr);
}
- std::scoped_lock lock(mLock);
- mMotionClassifier = std::make_unique<MotionClassifier>(this);
}
void InputClassifier::notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args) {
@@ -441,15 +399,10 @@
mListener->notifyDeviceReset(args);
}
-void InputClassifier::serviceDied(uint64_t /*cookie*/,
- const wp<android::hidl::base::V1_0::IBase>& who) {
+void InputClassifier::setMotionClassifier(
+ std::unique_ptr<MotionClassifierInterface> motionClassifier) {
std::scoped_lock lock(mLock);
- ALOGE("InputClassifier HAL has died. Setting mMotionClassifier to null");
- mMotionClassifier = nullptr;
- sp<android::hidl::base::V1_0::IBase> service = who.promote();
- if (service) {
- service->unlinkToDeath(this);
- }
+ mMotionClassifier = std::move(motionClassifier);
}
void InputClassifier::dump(std::string& dump) {
@@ -465,4 +418,10 @@
dump += "\n";
}
+InputClassifier::~InputClassifier() {
+ if (mInitializeMotionClassifierThread.joinable()) {
+ mInitializeMotionClassifierThread.join();
+ }
+}
+
} // namespace android
diff --git a/services/inputflinger/InputClassifier.h b/services/inputflinger/InputClassifier.h
index 47e20db..9ac8e2d 100644
--- a/services/inputflinger/InputClassifier.h
+++ b/services/inputflinger/InputClassifier.h
@@ -19,8 +19,8 @@
#include <android-base/thread_annotations.h>
#include <utils/RefBase.h>
-#include <unordered_map>
#include <thread>
+#include <unordered_map>
#include "BlockingQueue.h"
#include "InputListener.h"
@@ -90,6 +90,7 @@
*/
class InputClassifierInterface : public virtual RefBase, public InputListenerInterface {
public:
+ virtual void setMotionClassifierEnabled(bool enabled) = 0;
/**
* Dump the state of the input classifier.
* This method may be called on any thread (usually by the input manager).
@@ -113,23 +114,23 @@
*/
class MotionClassifier final : public MotionClassifierInterface {
public:
- /**
- * The deathRecipient will be subscribed to the HAL death. If the death recipient
- * owns MotionClassifier and receives HAL death, it should delete its copy of it.
- * The callback serviceDied will also be sent if the MotionClassifier itself fails
- * to initialize. If the MotionClassifier fails to initialize, it is not useful, and
- * should be deleted.
- * If no death recipient is supplied, then the registration step will be skipped, so there will
- * be no listeners registered for the HAL death. This is useful for testing
- * MotionClassifier in isolation.
+ /*
+ * Create an instance of MotionClassifier.
+ * The death recipient, if provided, will be subscribed to the HAL death.
+ * The death recipient could be used to destroy MotionClassifier.
+ *
+ * This function should be called asynchronously, because getService takes a long time.
*/
- explicit MotionClassifier(sp<android::hardware::hidl_death_recipient> deathRecipient = nullptr);
+ static std::unique_ptr<MotionClassifierInterface> create(
+ sp<android::hardware::hidl_death_recipient> deathRecipient);
+
~MotionClassifier();
/**
* Classifies events asynchronously; that is, it doesn't block events on a classification,
- * but instead sends them over to the classifier HAL and after a classification is
- * determined, it then marks the next event it sees in the stream with it.
+ * but instead sends them over to the classifier HAL. After a classification of a specific
+ * event is determined, MotionClassifier then marks the next event in the stream with this
+ * classification.
*
* Therefore, it is acceptable to have the classifications be delayed by 1-2 events
* in a particular gesture.
@@ -141,15 +142,9 @@
virtual void dump(std::string& dump) override;
private:
- /**
- * Initialize MotionClassifier.
- * Return true if initializaion is successful.
- */
- bool init();
- /**
- * Entity that will be notified of the HAL death (most likely InputClassifier).
- */
- wp<android::hardware::hidl_death_recipient> mDeathRecipient;
+ friend class MotionClassifierTest; // to create MotionClassifier with a test HAL implementation
+ explicit MotionClassifier(
+ sp<android::hardware::input::classifier::V1_0::IInputClassifier> service);
// The events that need to be sent to the HAL.
BlockingQueue<ClassifierEvent> mEvents;
@@ -164,14 +159,9 @@
*/
std::thread mHalThread;
/**
- * Print an error message if the caller is not on the InputClassifier thread.
- * Caller must supply the name of the calling function as __func__
+ * Process events and call the InputClassifier HAL
*/
- void ensureHalThread(const char* function);
- /**
- * Call the InputClassifier HAL
- */
- void callInputClassifierHal();
+ void processEvents();
/**
* Access to the InputClassifier HAL. May be null if init() hasn't completed yet.
* When init() successfully completes, mService is guaranteed to remain non-null and to not
@@ -223,19 +213,15 @@
const char* getServiceStatus() REQUIRES(mLock);
};
-
/**
* Implementation of the InputClassifierInterface.
* Represents a separate stage of input processing. All of the input events go through this stage.
* Acts as a passthrough for all input events except for motion events.
* The events of motion type are sent to MotionClassifier.
*/
-class InputClassifier : public InputClassifierInterface,
- public android::hardware::hidl_death_recipient {
+class InputClassifier : public InputClassifierInterface {
public:
explicit InputClassifier(const sp<InputListenerInterface>& listener);
- // Some of the constructor logic is finished in onFirstRef
- virtual void onFirstRef() override;
virtual void notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args) override;
virtual void notifyKey(const NotifyKeyArgs* args) override;
@@ -243,17 +229,47 @@
virtual void notifySwitch(const NotifySwitchArgs* args) override;
virtual void notifyDeviceReset(const NotifyDeviceResetArgs* args) override;
- virtual void serviceDied(uint64_t cookie,
- const wp<android::hidl::base::V1_0::IBase>& who) override;
-
virtual void dump(std::string& dump) override;
+ ~InputClassifier();
+
+ // Called from InputManager
+ virtual void setMotionClassifierEnabled(bool enabled) override;
+
private:
// Protect access to mMotionClassifier, since it may become null via a hidl callback
std::mutex mLock;
- std::unique_ptr<MotionClassifierInterface> mMotionClassifier GUARDED_BY(mLock);
// The next stage to pass input events to
sp<InputListenerInterface> mListener;
+
+ std::unique_ptr<MotionClassifierInterface> mMotionClassifier GUARDED_BY(mLock);
+ std::thread mInitializeMotionClassifierThread;
+ /**
+ * Set the value of mMotionClassifier.
+ * This is called from 2 different threads:
+ * 1) mInitializeMotionClassifierThread, when we have constructed a MotionClassifier
+ * 2) A binder thread of the HalDeathRecipient, which is created when HAL dies. This would cause
+ * mMotionClassifier to become nullptr.
+ */
+ void setMotionClassifier(std::unique_ptr<MotionClassifierInterface> motionClassifier);
+
+ /**
+ * The deathRecipient will call setMotionClassifier(null) when the HAL dies.
+ */
+ class HalDeathRecipient : public android::hardware::hidl_death_recipient {
+ public:
+ explicit HalDeathRecipient(InputClassifier& parent);
+ virtual void serviceDied(uint64_t cookie,
+ const wp<android::hidl::base::V1_0::IBase>& who) override;
+
+ private:
+ InputClassifier& mParent;
+ };
+ // We retain a reference to death recipient, because the death recipient will be calling
+ // ~MotionClassifier if the HAL dies.
+ // If we don't retain a reference, and MotionClassifier is the only owner of the death
+ // recipient, the serviceDied call will cause death recipient to call its own destructor.
+ sp<HalDeathRecipient> mHalDeathRecipient;
};
} // namespace android
diff --git a/services/inputflinger/InputManager.cpp b/services/inputflinger/InputManager.cpp
index acb53be..52e9080 100644
--- a/services/inputflinger/InputManager.cpp
+++ b/services/inputflinger/InputManager.cpp
@@ -133,4 +133,8 @@
mDispatcher->unregisterInputChannel(channel);
}
+void InputManager::setMotionClassifierEnabled(bool enabled) {
+ mClassifier->setMotionClassifierEnabled(enabled);
+}
+
} // namespace android
diff --git a/services/inputflinger/InputManager.h b/services/inputflinger/InputManager.h
index 32f7ae0..c75611f 100644
--- a/services/inputflinger/InputManager.h
+++ b/services/inputflinger/InputManager.h
@@ -100,6 +100,8 @@
virtual void registerInputChannel(const sp<InputChannel>& channel);
virtual void unregisterInputChannel(const sp<InputChannel>& channel);
+ void setMotionClassifierEnabled(bool enabled);
+
private:
sp<InputReaderInterface> mReader;
sp<InputReaderThread> mReaderThread;
diff --git a/services/inputflinger/tests/InputClassifier_test.cpp b/services/inputflinger/tests/InputClassifier_test.cpp
index 7cc17a2..4cddec5 100644
--- a/services/inputflinger/tests/InputClassifier_test.cpp
+++ b/services/inputflinger/tests/InputClassifier_test.cpp
@@ -22,6 +22,9 @@
#include <android/hardware/input/classifier/1.0/IInputClassifier.h>
using namespace android::hardware::input;
+using android::hardware::Return;
+using android::hardware::Void;
+using android::hardware::input::common::V1_0::Classification;
namespace android {
@@ -129,6 +132,49 @@
ASSERT_EQ(args, outArgs);
}
+TEST_F(InputClassifierTest, SetMotionClassifier_Enabled) {
+ mClassifier->setMotionClassifierEnabled(true);
+}
+
+TEST_F(InputClassifierTest, SetMotionClassifier_Disabled) {
+ mClassifier->setMotionClassifierEnabled(false);
+}
+
+/**
+ * Try to break it by calling setMotionClassifierEnabled multiple times.
+ */
+TEST_F(InputClassifierTest, SetMotionClassifier_Multiple) {
+ mClassifier->setMotionClassifierEnabled(true);
+ mClassifier->setMotionClassifierEnabled(true);
+ mClassifier->setMotionClassifierEnabled(true);
+ mClassifier->setMotionClassifierEnabled(false);
+ mClassifier->setMotionClassifierEnabled(false);
+ mClassifier->setMotionClassifierEnabled(true);
+ mClassifier->setMotionClassifierEnabled(true);
+ mClassifier->setMotionClassifierEnabled(true);
+}
+
+/**
+ * A minimal implementation of IInputClassifier.
+ */
+struct TestHal : public android::hardware::input::classifier::V1_0::IInputClassifier {
+ Return<Classification> classify(
+ const android::hardware::input::common::V1_0::MotionEvent& event) override {
+ return Classification::NONE;
+ };
+ Return<void> reset() override { return Void(); };
+ Return<void> resetDevice(int32_t deviceId) override { return Void(); };
+};
+
+/**
+ * An entity that will be subscribed to the HAL death.
+ */
+class TestDeathRecipient : public android::hardware::hidl_death_recipient {
+public:
+ virtual void serviceDied(uint64_t cookie,
+ const wp<android::hidl::base::V1_0::IBase>& who) override{};
+};
+
// --- MotionClassifierTest ---
class MotionClassifierTest : public testing::Test {
@@ -136,7 +182,14 @@
std::unique_ptr<MotionClassifierInterface> mMotionClassifier;
virtual void SetUp() override {
- mMotionClassifier = std::make_unique<MotionClassifier>();
+ mMotionClassifier = MotionClassifier::create(new TestDeathRecipient());
+ if (mMotionClassifier == nullptr) {
+ // If the device running this test does not have IInputClassifier service,
+ // use the test HAL instead.
+ // Using 'new' to access non-public constructor
+ mMotionClassifier =
+ std::unique_ptr<MotionClassifier>(new MotionClassifier(new TestHal()));
+ }
}
};