Merge "Add uhid permission to virtual_touchpad"
diff --git a/libs/gui/BufferQueueProducer.cpp b/libs/gui/BufferQueueProducer.cpp
index 96d7568..9c311a3 100644
--- a/libs/gui/BufferQueueProducer.cpp
+++ b/libs/gui/BufferQueueProducer.cpp
@@ -886,7 +886,7 @@
         item.mFence = acquireFence;
         item.mFenceTime = acquireFenceTime;
         item.mIsDroppable = mCore->mAsyncMode ||
-                (!mCore->mLegacyBufferDrop && mConsumerIsSurfaceFlinger) ||
+                (mConsumerIsSurfaceFlinger && mCore->mQueueBufferCanDrop) ||
                 (mCore->mLegacyBufferDrop && mCore->mQueueBufferCanDrop) ||
                 (mCore->mSharedBufferMode && mCore->mSharedBufferSlot == slot);
         item.mSurfaceDamage = surfaceDamage;
@@ -1497,7 +1497,9 @@
     BQ_LOGV("setDequeueTimeout: %" PRId64, timeout);
 
     std::lock_guard<std::mutex> lock(mCore->mMutex);
-    int delta = mCore->getMaxBufferCountLocked(mCore->mAsyncMode, false,
+    bool dequeueBufferCannotBlock =
+            timeout >= 0 ? false : mCore->mDequeueBufferCannotBlock;
+    int delta = mCore->getMaxBufferCountLocked(mCore->mAsyncMode, dequeueBufferCannotBlock,
             mCore->mMaxBufferCount) - mCore->getMaxBufferCountLocked();
     if (!mCore->adjustAvailableSlotsLocked(delta)) {
         BQ_LOGE("setDequeueTimeout: BufferQueue failed to adjust the number of "
@@ -1506,11 +1508,9 @@
     }
 
     mDequeueTimeout = timeout;
-    if (timeout >= 0) {
-        mCore->mDequeueBufferCannotBlock = false;
-        if (timeout != 0) {
-            mCore->mQueueBufferCanDrop = false;
-        }
+    mCore->mDequeueBufferCannotBlock = dequeueBufferCannotBlock;
+    if (timeout > 0) {
+        mCore->mQueueBufferCanDrop = false;
     }
 
     VALIDATE_CONSISTENCY();
diff --git a/libs/gui/include/gui/BufferQueueCore.h b/libs/gui/include/gui/BufferQueueCore.h
index 9c0ee99..690a85f 100644
--- a/libs/gui/include/gui/BufferQueueCore.h
+++ b/libs/gui/include/gui/BufferQueueCore.h
@@ -233,7 +233,8 @@
 
     // mLegacyBufferDrop indicates whether mQueueBufferCanDrop is in effect.
     // If this flag is set mQueueBufferCanDrop is working as explained. If not
-    // queueBuffer will not drop buffers unless consumer is SurfaceFlinger.
+    // queueBuffer will not drop buffers unless consumer is SurfaceFlinger and
+    // mQueueBufferCanDrop is set.
     bool mLegacyBufferDrop;
 
     // mDefaultBufferFormat can be set so it will override the buffer format
diff --git a/libs/input/InputTransport.cpp b/libs/input/InputTransport.cpp
index 2a5a604..d02cb8e 100644
--- a/libs/input/InputTransport.cpp
+++ b/libs/input/InputTransport.cpp
@@ -84,6 +84,10 @@
     return a + alpha * (b - a);
 }
 
+inline static bool isPointerEvent(int32_t source) {
+    return (source & AINPUT_SOURCE_CLASS_POINTER) == AINPUT_SOURCE_CLASS_POINTER;
+}
+
 // --- InputMessage ---
 
 bool InputMessage::isValid(size_t actualSize) const {
@@ -637,6 +641,16 @@
                             mChannel->getName().c_str());
 #endif
                     break;
+                } else if (isPointerEvent(mMsg.body.motion.source) &&
+                        mMsg.body.motion.action == AMOTION_EVENT_ACTION_CANCEL) {
+                    // No need to process events that we are going to cancel anyways
+                    const size_t count = batch.samples.size();
+                    for (size_t i = 0; i < count; i++) {
+                        const InputMessage& msg = batch.samples.itemAt(i);
+                        sendFinishedSignal(msg.body.motion.seq, false);
+                    }
+                    batch.samples.removeItemsAt(0, count);
+                    mBatches.removeAt(batchIndex);
                 } else {
                     // We cannot append to the batch in progress, so we need to consume
                     // the previous batch right now and defer the new message until later.
@@ -759,8 +773,7 @@
 }
 
 void InputConsumer::updateTouchState(InputMessage& msg) {
-    if (!mResampleTouch ||
-            !(msg.body.motion.source & AINPUT_SOURCE_CLASS_POINTER)) {
+    if (!mResampleTouch || !isPointerEvent(msg.body.motion.source)) {
         return;
     }
 
@@ -872,7 +885,7 @@
 void InputConsumer::resampleTouchState(nsecs_t sampleTime, MotionEvent* event,
     const InputMessage* next) {
     if (!mResampleTouch
-            || !(event->getSource() & AINPUT_SOURCE_CLASS_POINTER)
+            || !(isPointerEvent(event->getSource()))
             || event->getAction() != AMOTION_EVENT_ACTION_MOVE) {
         return;
     }
diff --git a/services/surfaceflinger/Scheduler/DispSync.cpp b/services/surfaceflinger/Scheduler/DispSync.cpp
index f7a30af..95ff9d0 100644
--- a/services/surfaceflinger/Scheduler/DispSync.cpp
+++ b/services/surfaceflinger/Scheduler/DispSync.cpp
@@ -79,11 +79,7 @@
         Mutex::Autolock lock(mMutex);
 
         mPhase = phase;
-        if (mReferenceTime != referenceTime) {
-            for (auto& eventListener : mEventListeners) {
-                eventListener.mHasFired = false;
-            }
-        }
+        const bool referenceTimeChanged = mReferenceTime != referenceTime;
         mReferenceTime = referenceTime;
         if (mPeriod != 0 && mPeriod != period && mReferenceTime != 0) {
             // Inflate the reference time to be the most recent predicted
@@ -94,6 +90,13 @@
             mReferenceTime = mReferenceTime + (numOldPeriods)*mPeriod;
         }
         mPeriod = period;
+        if (!mModelLocked && referenceTimeChanged) {
+            for (auto& eventListener : mEventListeners) {
+                eventListener.mHasFired = false;
+                eventListener.mLastEventTime =
+                        mReferenceTime - mPeriod + mPhase + eventListener.mPhase;
+            }
+        }
         if (mTraceDetailedInfo) {
             ATRACE_INT64("DispSync:Period", mPeriod);
             ATRACE_INT64("DispSync:Phase", mPhase + mPeriod / 2);
@@ -120,6 +123,13 @@
 
     void unlockModel() {
         Mutex::Autolock lock(mMutex);
+        if (mModelLocked) {
+            for (auto& eventListener : mEventListeners) {
+                if (eventListener.mLastEventTime > mReferenceTime) {
+                    eventListener.mHasFired = true;
+                }
+            }
+        }
         mModelLocked = false;
         ATRACE_INT("DispSync:ModelLocked", mModelLocked);
     }
@@ -249,6 +259,10 @@
             listener.mLastCallbackTime = lastCallbackTime;
         }
 
+        if (!mModelLocked && listener.mLastEventTime > mReferenceTime) {
+            listener.mHasFired = true;
+        }
+
         mEventListeners.push_back(listener);
 
         mCond.signal();