Merge "Create test for screenshots with null snapshots" into main
diff --git a/data/etc/input/motion_predictor_config.xml b/data/etc/input/motion_predictor_config.xml
index 39772ae..a20993f 100644
--- a/data/etc/input/motion_predictor_config.xml
+++ b/data/etc/input/motion_predictor_config.xml
@@ -31,5 +31,13 @@
        the UX issue mentioned above.
   -->
   <distance-noise-floor>0.2</distance-noise-floor>
+  <!-- The low and high jerk thresholds for prediction pruning.
+
+    The jerk thresholds are based on normalized dt = 1 calculations, and
+    are taken from Jetpacks MotionEventPredictor's KalmanPredictor
+    implementation (using its ACCURATE_LOW_JANK and ACCURATE_HIGH_JANK).
+  -->
+  <low-jerk>0.1</low-jerk>
+  <high-jerk>0.2</high-jerk>
 </motion-predictor>
 
diff --git a/include/input/InputConsumer.h b/include/input/InputConsumer.h
index 560e804..611478c 100644
--- a/include/input/InputConsumer.h
+++ b/include/input/InputConsumer.h
@@ -111,6 +111,11 @@
 
     std::shared_ptr<InputChannel> mChannel;
 
+    // TODO(b/311142655): delete this temporary tracing after the ANR bug is fixed
+    const std::string mProcessingTraceTag;
+    const std::string mLifetimeTraceTag;
+    const int32_t mLifetimeTraceCookie;
+
     // The current input message.
     InputMessage mMsg;
 
diff --git a/include/input/TfLiteMotionPredictor.h b/include/input/TfLiteMotionPredictor.h
index 2edc138..728a8e1 100644
--- a/include/input/TfLiteMotionPredictor.h
+++ b/include/input/TfLiteMotionPredictor.h
@@ -105,6 +105,11 @@
         // The noise floor for predictions.
         // Distances (r) less than this should be discarded as noise.
         float distanceNoiseFloor = 0;
+
+        // Low and high jerk thresholds (with normalized dt = 1) for predictions.
+        // High jerk means more predictions will be pruned, vice versa for low.
+        float lowJerk = 0;
+        float highJerk = 0;
     };
 
     // Creates a model from an encoded Flatbuffer model.
diff --git a/libs/binder/tests/binderRpcTestCommon.h b/libs/binder/tests/binderRpcTestCommon.h
index 62fe9e5..8832f1a 100644
--- a/libs/binder/tests/binderRpcTestCommon.h
+++ b/libs/binder/tests/binderRpcTestCommon.h
@@ -74,6 +74,12 @@
 }
 
 static inline bool hasExperimentalRpc() {
+#ifdef BINDER_RPC_TO_TRUSTY_TEST
+    // Trusty services do not support the experimental version,
+    // so that we can update the prebuilts separately.
+    // This covers the binderRpcToTrustyTest case on Android.
+    return false;
+#endif
 #ifdef __ANDROID__
     return base::GetProperty("ro.build.version.codename", "") != "REL";
 #else
diff --git a/libs/binder/tests/binderRpcUniversalTests.cpp b/libs/binder/tests/binderRpcUniversalTests.cpp
index 885bb45..f480780 100644
--- a/libs/binder/tests/binderRpcUniversalTests.cpp
+++ b/libs/binder/tests/binderRpcUniversalTests.cpp
@@ -48,11 +48,13 @@
     EXPECT_FALSE(session->setProtocolVersion(RPC_WIRE_PROTOCOL_VERSION_NEXT + 15));
 }
 
+#ifndef BINDER_RPC_TO_TRUSTY_TEST
 TEST(BinderRpc, CanUseExperimentalWireVersion) {
     auto session = RpcSession::make();
     EXPECT_EQ(hasExperimentalRpc(),
               session->setProtocolVersion(RPC_WIRE_PROTOCOL_VERSION_EXPERIMENTAL));
 }
+#endif
 
 TEST_P(BinderRpc, Ping) {
     auto proc = createRpcTestSocketServerProcess({});
diff --git a/libs/debugstore/OWNERS b/libs/debugstore/OWNERS
new file mode 100644
index 0000000..428a1a2
--- /dev/null
+++ b/libs/debugstore/OWNERS
@@ -0,0 +1,3 @@
+benmiles@google.com
+gaillard@google.com
+mohamadmahmoud@google.com
diff --git a/libs/debugstore/rust/Android.bp b/libs/debugstore/rust/Android.bp
new file mode 100644
index 0000000..55ba3c3
--- /dev/null
+++ b/libs/debugstore/rust/Android.bp
@@ -0,0 +1,71 @@
+// Copyright (C) 2024 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+    default_team: "trendy_team_android_telemetry_infra",
+    default_applicable_licenses: ["frameworks_native_license"],
+}
+
+rust_defaults {
+    name: "libdebugstore_defaults",
+    srcs: ["src/lib.rs"],
+    rustlibs: [
+        "libcrossbeam_queue",
+        "libparking_lot",
+        "libonce_cell",
+        "libcxx",
+    ],
+    shared_libs: ["libutils"],
+    edition: "2021",
+}
+
+rust_ffi_static {
+    name: "libdebugstore_rust_ffi",
+    crate_name: "debugstore",
+    defaults: ["libdebugstore_defaults"],
+}
+
+cc_library {
+    name: "libdebugstore_cxx",
+    generated_headers: ["libdebugstore_cxx_bridge_header"],
+    generated_sources: ["libdebugstore_cxx_bridge_code"],
+    export_generated_headers: ["libdebugstore_cxx_bridge_header"],
+    shared_libs: ["libutils"],
+    whole_static_libs: ["libdebugstore_rust_ffi"],
+}
+
+rust_test {
+    name: "libdebugstore_tests",
+    defaults: ["libdebugstore_defaults"],
+    test_options: {
+        unit_test: true,
+    },
+    shared_libs: ["libdebugstore_cxx"],
+}
+
+genrule {
+    name: "libdebugstore_cxx_bridge_header",
+    tools: ["cxxbridge"],
+    cmd: "$(location cxxbridge) $(in) --header >> $(out)",
+    srcs: ["src/lib.rs"],
+    out: ["debugstore/debugstore_cxx_bridge.rs.h"],
+}
+
+genrule {
+    name: "libdebugstore_cxx_bridge_code",
+    tools: ["cxxbridge"],
+    cmd: "$(location cxxbridge) $(in) >> $(out)",
+    srcs: ["src/lib.rs"],
+    out: ["debugstore/debugstore_cxx_bridge.rs.cpp"],
+}
diff --git a/libs/debugstore/rust/Cargo.toml b/libs/debugstore/rust/Cargo.toml
new file mode 100644
index 0000000..23a8d24
--- /dev/null
+++ b/libs/debugstore/rust/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "debugstore"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
\ No newline at end of file
diff --git a/libs/debugstore/rust/src/core.rs b/libs/debugstore/rust/src/core.rs
new file mode 100644
index 0000000..1dfa512
--- /dev/null
+++ b/libs/debugstore/rust/src/core.rs
@@ -0,0 +1,198 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+use super::event::Event;
+use super::event_type::EventType;
+use super::storage::Storage;
+use crate::cxxffi::uptimeMillis;
+use once_cell::sync::Lazy;
+use std::fmt;
+use std::sync::atomic::{AtomicU64, Ordering};
+
+//  Lazily initialized static instance of DebugStore.
+static INSTANCE: Lazy<DebugStore> = Lazy::new(DebugStore::new);
+
+/// The `DebugStore` struct is responsible for managing debug events and data.
+pub struct DebugStore {
+    /// Atomic counter for generating unique event IDs.
+    id_generator: AtomicU64,
+    /// Non-blocking storage for debug events.
+    event_store: Storage<Event, { DebugStore::DEFAULT_EVENT_LIMIT }>,
+}
+
+impl DebugStore {
+    /// The default limit for the number of events that can be stored.
+    ///
+    /// This limit is used to initialize the storage for debug events.
+    const DEFAULT_EVENT_LIMIT: usize = 16;
+    /// A designated identifier used for events that cannot be closed.
+    ///
+    /// This ID is used for point/instantaneous events, or events do not have
+    ///  a distinct end.
+    const NON_CLOSABLE_ID: u64 = 0;
+    /// The version number for the encoding of debug store data.
+    ///
+    /// This constant is used as a part of the debug store's data format,
+    /// allowing for version tracking and compatibility checks.
+    const ENCODE_VERSION: u32 = 1;
+
+    /// Creates a new instance of `DebugStore` with specified event limit and maximum delay.
+    fn new() -> Self {
+        Self { id_generator: AtomicU64::new(1), event_store: Storage::new() }
+    }
+
+    /// Returns a shared instance of `DebugStore`.
+    ///
+    /// This method provides a singleton pattern access to `DebugStore`.
+    pub fn get_instance() -> &'static DebugStore {
+        &INSTANCE
+    }
+
+    /// Begins a new debug event with the given name and data.
+    ///
+    /// This method logs the start of a debug event, assigning it a unique ID and marking its start time.
+    /// - `name`: The name of the debug event.
+    /// - `data`: Associated data as key-value pairs.
+    /// - Returns: A unique ID for the debug event.
+    pub fn begin(&self, name: String, data: Vec<(String, String)>) -> u64 {
+        let id = self.generate_id();
+        self.event_store.insert(Event::new(
+            id,
+            Some(name),
+            uptimeMillis(),
+            EventType::DurationStart,
+            data,
+        ));
+        id
+    }
+
+    /// Records a debug event without a specific duration, with the given name and data.
+    ///
+    /// This method logs an instantaneous debug event, useful for events that don't have a duration but are significant.
+    /// - `name`: The name of the debug event.
+    /// - `data`: Associated data as key-value pairs.
+    pub fn record(&self, name: String, data: Vec<(String, String)>) {
+        self.event_store.insert(Event::new(
+            Self::NON_CLOSABLE_ID,
+            Some(name),
+            uptimeMillis(),
+            EventType::Point,
+            data,
+        ));
+    }
+
+    /// Ends a debug event that was previously started with the given ID.
+    ///
+    /// This method marks the end of a debug event, completing its lifecycle.
+    /// - `id`: The unique ID of the debug event to end.
+    /// - `data`: Additional data to log at the end of the event.
+    pub fn end(&self, id: u64, data: Vec<(String, String)>) {
+        if id != Self::NON_CLOSABLE_ID {
+            self.event_store.insert(Event::new(
+                id,
+                None,
+                uptimeMillis(),
+                EventType::DurationEnd,
+                data,
+            ));
+        }
+    }
+
+    fn generate_id(&self) -> u64 {
+        let mut id = self.id_generator.fetch_add(1, Ordering::Relaxed);
+        while id == Self::NON_CLOSABLE_ID {
+            id = self.id_generator.fetch_add(1, Ordering::Relaxed);
+        }
+        id
+    }
+}
+
+impl fmt::Display for DebugStore {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        let uptime_now = uptimeMillis();
+        write!(f, "{},{},{}::", Self::ENCODE_VERSION, self.event_store.len(), uptime_now)?;
+
+        write!(
+            f,
+            "{}",
+            self.event_store.fold(String::new(), |mut acc, event| {
+                if !acc.is_empty() {
+                    acc.push_str("||");
+                }
+                acc.push_str(&event.to_string());
+                acc
+            })
+        )
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_begin_event() {
+        let debug_store = DebugStore::new();
+        let _event_id = debug_store.begin("test_event".to_string(), vec![]);
+        let output = debug_store.to_string();
+        assert!(
+            output.contains("test_event"),
+            "The output should contain the event name 'test_event'"
+        );
+    }
+
+    #[test]
+    fn test_unique_event_ids() {
+        let debug_store = DebugStore::new();
+        let event_id1 = debug_store.begin("event1".to_string(), vec![]);
+        let event_id2 = debug_store.begin("event2".to_string(), vec![]);
+        assert_ne!(event_id1, event_id2, "Event IDs should be unique");
+    }
+
+    #[test]
+    fn test_end_event() {
+        let debug_store = DebugStore::new();
+        let event_id = debug_store.begin("test_event".to_string(), vec![]);
+        debug_store.end(event_id, vec![]);
+        let output = debug_store.to_string();
+
+        let id_pattern = format!("ID:{},", event_id);
+        assert!(
+            output.contains("test_event"),
+            "The output should contain the event name 'test_event'"
+        );
+        assert_eq!(
+            output.matches(&id_pattern).count(),
+            2,
+            "The output should contain two events (start and end) associated with the given ID"
+        );
+    }
+
+    #[test]
+    fn test_event_data_handling() {
+        let debug_store = DebugStore::new();
+        debug_store
+            .record("data_event".to_string(), vec![("key".to_string(), "value".to_string())]);
+        let output = debug_store.to_string();
+        assert!(
+            output.contains("data_event"),
+            "The output should contain the event name 'data_event'"
+        );
+        assert!(
+            output.contains("key=value"),
+            "The output should contain the event data 'key=value'"
+        );
+    }
+}
diff --git a/libs/debugstore/rust/src/event.rs b/libs/debugstore/rust/src/event.rs
new file mode 100644
index 0000000..0c16665
--- /dev/null
+++ b/libs/debugstore/rust/src/event.rs
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+use super::event_type::EventType;
+use std::fmt;
+
+/// Represents a single debug event within the Debug Store system.
+///
+/// It contains all the necessary information for a debug event.
+#[derive(Clone)]
+pub struct Event {
+    /// The unique identifier for this event.
+    pub id: u64,
+    /// The optional name of the event.
+    pub name: Option<String>,
+    /// The system uptime when the event occurred.
+    pub timestamp: i64,
+    /// The type of the event.
+    pub event_type: EventType,
+    /// Additional data associated with the event, stored in the given order as key-value pairs.
+    data: Vec<(String, String)>,
+}
+
+impl Event {
+    /// Constructs a new `Event`.
+    ///
+    /// - `id`: The unique identifier for the event.
+    /// - `name`: An optional name for the event.
+    /// - `timestamp`: The system uptime when the event occurred.
+    /// - `event_type`: The type of the event.
+    /// - `data`: Additional data for the event, represented as ordered key-value pairs.
+    pub fn new(
+        id: u64,
+        name: Option<String>,
+        timestamp: i64,
+        event_type: EventType,
+        data: Vec<(String, String)>,
+    ) -> Self {
+        Self { id, name, timestamp, event_type, data }
+    }
+}
+
+impl fmt::Display for Event {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "ID:{},C:{},T:{}", self.id, self.event_type, self.timestamp)?;
+
+        if let Some(ref name) = self.name {
+            write!(f, ",N:{}", name)?;
+        }
+
+        if !self.data.is_empty() {
+            let data_str =
+                self.data.iter().map(|(k, v)| format!("{}={}", k, v)).collect::<Vec<_>>().join(";");
+            write!(f, ",D:{}", data_str)?;
+        }
+
+        Ok(())
+    }
+}
diff --git a/libs/debugstore/rust/src/event_type.rs b/libs/debugstore/rust/src/event_type.rs
new file mode 100644
index 0000000..6f4bafb
--- /dev/null
+++ b/libs/debugstore/rust/src/event_type.rs
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+use std::fmt;
+
+#[derive(Clone, Copy, PartialEq, Eq)]
+pub enum EventType {
+    /// Marks the an unknown or invalid event, for convenient mapping to a protobuf enum.
+    Invalid,
+    /// Marks the beginning of a duration-based event, indicating the start of a timed operation.
+    DurationStart,
+    /// Marks the end of a duration-based event, indicating the end of a timed operation.
+    DurationEnd,
+    /// Represents a single, instantaneous event with no duration.
+    Point,
+}
+
+impl fmt::Display for EventType {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "{}",
+            match self {
+                EventType::Invalid => "I",
+                EventType::DurationStart => "S",
+                EventType::DurationEnd => "E",
+                EventType::Point => "P",
+            }
+        )
+    }
+}
diff --git a/libs/debugstore/rust/src/lib.rs b/libs/debugstore/rust/src/lib.rs
new file mode 100644
index 0000000..f2195c0
--- /dev/null
+++ b/libs/debugstore/rust/src/lib.rs
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//! # Debug Store Crate
+/// The Debug Store Crate provides functionalities for storing debug events.
+/// It allows logging and retrieval of debug events, and associated data.
+mod core;
+mod event;
+mod event_type;
+mod storage;
+
+pub use core::*;
+pub use event::*;
+
+use cxx::{CxxString, CxxVector};
+
+#[cxx::bridge(namespace = "android::debugstore")]
+#[allow(unsafe_op_in_unsafe_fn)]
+mod cxxffi {
+    extern "Rust" {
+        fn debug_store_to_string() -> String;
+        fn debug_store_record(name: &CxxString, data: &CxxVector<CxxString>);
+        fn debug_store_begin(name: &CxxString, data: &CxxVector<CxxString>) -> u64;
+        fn debug_store_end(id: u64, data: &CxxVector<CxxString>);
+    }
+
+    #[namespace = "android"]
+    unsafe extern "C++" {
+        include!("utils/SystemClock.h");
+        fn uptimeMillis() -> i64;
+    }
+}
+
+fn debug_store_to_string() -> String {
+    DebugStore::get_instance().to_string()
+}
+
+fn debug_store_record(name: &CxxString, data: &CxxVector<CxxString>) {
+    DebugStore::get_instance().record(name.to_string_lossy().into_owned(), cxx_vec_to_pairs(data));
+}
+
+fn debug_store_begin(name: &CxxString, data: &CxxVector<CxxString>) -> u64 {
+    DebugStore::get_instance().begin(name.to_string_lossy().into_owned(), cxx_vec_to_pairs(data))
+}
+
+fn debug_store_end(id: u64, data: &CxxVector<CxxString>) {
+    DebugStore::get_instance().end(id, cxx_vec_to_pairs(data));
+}
+
+fn cxx_vec_to_pairs(vec: &CxxVector<CxxString>) -> Vec<(String, String)> {
+    vec.iter()
+        .map(|s| s.to_string_lossy().into_owned())
+        .collect::<Vec<_>>()
+        .chunks(2)
+        .filter_map(|chunk| match chunk {
+            [k, v] => Some((k.clone(), v.clone())),
+            _ => None,
+        })
+        .collect()
+}
diff --git a/libs/debugstore/rust/src/storage.rs b/libs/debugstore/rust/src/storage.rs
new file mode 100644
index 0000000..2ad7f4e
--- /dev/null
+++ b/libs/debugstore/rust/src/storage.rs
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+use crossbeam_queue::ArrayQueue;
+
+/// A thread-safe storage that allows non-blocking attempts to store and visit elements.
+pub struct Storage<T, const N: usize> {
+    insertion_buffer: ArrayQueue<T>,
+}
+
+impl<T, const N: usize> Storage<T, N> {
+    /// Creates a new Storage with the specified size.
+    pub fn new() -> Self {
+        Self { insertion_buffer: ArrayQueue::new(N) }
+    }
+
+    /// Inserts a value into the storage, returning an error if the lock cannot be acquired.
+    pub fn insert(&self, value: T) {
+        self.insertion_buffer.force_push(value);
+    }
+
+    /// Folds over the elements in the storage using the provided function.
+    pub fn fold<U, F>(&self, init: U, mut func: F) -> U
+    where
+        F: FnMut(U, &T) -> U,
+    {
+        let mut acc = init;
+        while let Some(value) = self.insertion_buffer.pop() {
+            acc = func(acc, &value);
+        }
+        acc
+    }
+
+    /// Returns the number of elements that have been inserted into the storage.
+    pub fn len(&self) -> usize {
+        self.insertion_buffer.len()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_insert_and_retrieve() {
+        let storage = Storage::<i32, 10>::new();
+        storage.insert(7);
+
+        let sum = storage.fold(0, |acc, &x| acc + x);
+        assert_eq!(sum, 7, "The sum of the elements should be equal to the inserted value.");
+    }
+
+    #[test]
+    fn test_fold_functionality() {
+        let storage = Storage::<i32, 5>::new();
+        storage.insert(1);
+        storage.insert(2);
+        storage.insert(3);
+
+        let sum = storage.fold(0, |acc, &x| acc + x);
+        assert_eq!(
+            sum, 6,
+            "The sum of the elements should be equal to the sum of inserted values."
+        );
+    }
+
+    #[test]
+    fn test_insert_and_retrieve_multiple_values() {
+        let storage = Storage::<i32, 10>::new();
+        storage.insert(1);
+        storage.insert(2);
+        storage.insert(5);
+
+        let first_sum = storage.fold(0, |acc, &x| acc + x);
+        assert_eq!(first_sum, 8, "The sum of the elements should be equal to the inserted values.");
+
+        storage.insert(30);
+        storage.insert(22);
+
+        let second_sum = storage.fold(0, |acc, &x| acc + x);
+        assert_eq!(
+            second_sum, 52,
+            "The sum of the elements should be equal to the inserted values."
+        );
+    }
+
+    #[test]
+    fn test_storage_limit() {
+        let storage = Storage::<i32, 1>::new();
+        storage.insert(1);
+        // This value should overwrite the previously inserted value (1).
+        storage.insert(4);
+        let sum = storage.fold(0, |acc, &x| acc + x);
+        assert_eq!(sum, 4, "The sum of the elements should be equal to the inserted values.");
+    }
+
+    #[test]
+    fn test_concurrent_insertions() {
+        use std::sync::Arc;
+        use std::thread;
+
+        let storage = Arc::new(Storage::<i32, 100>::new());
+        let threads: Vec<_> = (0..10)
+            .map(|_| {
+                let storage_clone = Arc::clone(&storage);
+                thread::spawn(move || {
+                    for i in 0..10 {
+                        storage_clone.insert(i);
+                    }
+                })
+            })
+            .collect();
+
+        for thread in threads {
+            thread.join().expect("Thread should finish without panicking");
+        }
+
+        let count = storage.fold(0, |acc, _| acc + 1);
+        assert_eq!(count, 100, "Storage should be filled to its limit with concurrent insertions.");
+    }
+}
diff --git a/libs/gui/include/gui/WindowInfo.h b/libs/gui/include/gui/WindowInfo.h
index 2d1b51a..e4f1890 100644
--- a/libs/gui/include/gui/WindowInfo.h
+++ b/libs/gui/include/gui/WindowInfo.h
@@ -178,6 +178,8 @@
                 static_cast<uint32_t>(os::InputConfig::CLONE),
         GLOBAL_STYLUS_BLOCKS_TOUCH =
                 static_cast<uint32_t>(os::InputConfig::GLOBAL_STYLUS_BLOCKS_TOUCH),
+        SENSITIVE_FOR_TRACING =
+                static_cast<uint32_t>(os::InputConfig::SENSITIVE_FOR_TRACING),
         // clang-format on
     };
 
diff --git a/libs/gui/tests/Android.bp b/libs/gui/tests/Android.bp
index 0f16f71..2faa330 100644
--- a/libs/gui/tests/Android.bp
+++ b/libs/gui/tests/Android.bp
@@ -21,7 +21,8 @@
     cppflags: [
         "-Wall",
         "-Werror",
-        "-Wno-extra",
+        "-Wextra",
+        "-Wthread-safety",
         "-DCOM_ANDROID_GRAPHICS_LIBGUI_FLAGS_BQ_SETFRAMERATE=true",
     ],
 
diff --git a/libs/gui/tests/BLASTBufferQueue_test.cpp b/libs/gui/tests/BLASTBufferQueue_test.cpp
index ea7078d..946ff05 100644
--- a/libs/gui/tests/BLASTBufferQueue_test.cpp
+++ b/libs/gui/tests/BLASTBufferQueue_test.cpp
@@ -18,6 +18,7 @@
 
 #include <gui/BLASTBufferQueue.h>
 
+#include <android-base/thread_annotations.h>
 #include <android/hardware/graphics/common/1.2/types.h>
 #include <gui/AidlStatusUtil.h>
 #include <gui/BufferQueueCore.h>
@@ -61,7 +62,8 @@
     }
 
     void waitOnNumberReleased(int32_t expectedNumReleased) {
-        std::unique_lock<std::mutex> lock(mMutex);
+        std::unique_lock lock{mMutex};
+        base::ScopedLockAssertion assumeLocked(mMutex);
         while (mNumReleased < expectedNumReleased) {
             ASSERT_NE(mReleaseCallback.wait_for(lock, std::chrono::seconds(3)),
                       std::cv_status::timeout)
@@ -134,11 +136,18 @@
 
     void clearSyncTransaction() { mBlastBufferQueueAdapter->clearSyncTransaction(); }
 
-    int getWidth() { return mBlastBufferQueueAdapter->mSize.width; }
+    int getWidth() {
+        std::scoped_lock lock(mBlastBufferQueueAdapter->mMutex);
+        return mBlastBufferQueueAdapter->mSize.width;
+    }
 
-    int getHeight() { return mBlastBufferQueueAdapter->mSize.height; }
+    int getHeight() {
+        std::scoped_lock lock(mBlastBufferQueueAdapter->mMutex);
+        return mBlastBufferQueueAdapter->mSize.height;
+    }
 
     std::function<void(Transaction*)> getTransactionReadyCallback() {
+        std::scoped_lock lock(mBlastBufferQueueAdapter->mMutex);
         return mBlastBufferQueueAdapter->mTransactionReadyCallback;
     }
 
@@ -147,6 +156,7 @@
     }
 
     const sp<SurfaceControl> getSurfaceControl() {
+        std::scoped_lock lock(mBlastBufferQueueAdapter->mMutex);
         return mBlastBufferQueueAdapter->mSurfaceControl;
     }
 
@@ -156,6 +166,7 @@
 
     void waitForCallbacks() {
         std::unique_lock lock{mBlastBufferQueueAdapter->mMutex};
+        base::ScopedLockAssertion assumeLocked(mBlastBufferQueueAdapter->mMutex);
         // Wait until all but one of the submitted buffers have been released.
         while (mBlastBufferQueueAdapter->mSubmitted.size() > 1) {
             mBlastBufferQueueAdapter->mCallbackCV.wait(lock);
@@ -166,8 +177,8 @@
         mBlastBufferQueueAdapter->waitForCallback(frameNumber);
     }
 
-    void validateNumFramesSubmitted(int64_t numFramesSubmitted) {
-        std::unique_lock lock{mBlastBufferQueueAdapter->mMutex};
+    void validateNumFramesSubmitted(size_t numFramesSubmitted) {
+        std::scoped_lock lock{mBlastBufferQueueAdapter->mMutex};
         ASSERT_EQ(numFramesSubmitted, mBlastBufferQueueAdapter->mSubmitted.size());
     }
 
@@ -201,7 +212,7 @@
         mDisplayWidth = resolution.getWidth();
         mDisplayHeight = resolution.getHeight();
         ALOGD("Display: %dx%d orientation:%d", mDisplayWidth, mDisplayHeight,
-              displayState.orientation);
+              static_cast<int32_t>(displayState.orientation));
 
         mRootSurfaceControl = mClient->createSurface(String8("RootTestSurface"), mDisplayWidth,
                                                      mDisplayHeight, PIXEL_FORMAT_RGBA_8888,
@@ -240,8 +251,8 @@
 
     void fillBuffer(uint32_t* bufData, Rect rect, uint32_t stride, uint8_t r, uint8_t g,
                     uint8_t b) {
-        for (uint32_t row = rect.top; row < rect.bottom; row++) {
-            for (uint32_t col = rect.left; col < rect.right; col++) {
+        for (int32_t row = rect.top; row < rect.bottom; row++) {
+            for (int32_t col = rect.left; col < rect.right; col++) {
                 uint8_t* pixel = (uint8_t*)(bufData + (row * stride) + col);
                 *pixel = r;
                 *(pixel + 1) = g;
@@ -271,16 +282,16 @@
                             bool outsideRegion = false) {
         sp<GraphicBuffer>& captureBuf = mCaptureResults.buffer;
         const auto epsilon = 3;
-        const auto width = captureBuf->getWidth();
-        const auto height = captureBuf->getHeight();
+        const int32_t width = static_cast<int32_t>(captureBuf->getWidth());
+        const int32_t height = static_cast<int32_t>(captureBuf->getHeight());
         const auto stride = captureBuf->getStride();
 
         uint32_t* bufData;
         captureBuf->lock(static_cast<uint32_t>(GraphicBuffer::USAGE_SW_READ_OFTEN),
                          reinterpret_cast<void**>(&bufData));
 
-        for (uint32_t row = 0; row < height; row++) {
-            for (uint32_t col = 0; col < width; col++) {
+        for (int32_t row = 0; row < height; row++) {
+            for (int32_t col = 0; col < width; col++) {
                 uint8_t* pixel = (uint8_t*)(bufData + (row * stride) + col);
                 ASSERT_NE(nullptr, pixel);
                 bool inRegion;
@@ -352,8 +363,8 @@
     // create BLASTBufferQueue adapter associated with this surface
     BLASTBufferQueueHelper adapter(mSurfaceControl, mDisplayWidth, mDisplayHeight);
     ASSERT_EQ(mSurfaceControl, adapter.getSurfaceControl());
-    ASSERT_EQ(mDisplayWidth, adapter.getWidth());
-    ASSERT_EQ(mDisplayHeight, adapter.getHeight());
+    ASSERT_EQ(static_cast<int32_t>(mDisplayWidth), adapter.getWidth());
+    ASSERT_EQ(static_cast<int32_t>(mDisplayHeight), adapter.getHeight());
     ASSERT_EQ(nullptr, adapter.getTransactionReadyCallback());
 }
 
@@ -371,10 +382,10 @@
 
     int32_t width;
     igbProducer->query(NATIVE_WINDOW_WIDTH, &width);
-    ASSERT_EQ(mDisplayWidth / 2, width);
+    ASSERT_EQ(static_cast<int32_t>(mDisplayWidth) / 2, width);
     int32_t height;
     igbProducer->query(NATIVE_WINDOW_HEIGHT, &height);
-    ASSERT_EQ(mDisplayHeight / 2, height);
+    ASSERT_EQ(static_cast<int32_t>(mDisplayHeight) / 2, height);
 }
 
 TEST_F(BLASTBufferQueueTest, SyncNextTransaction) {
@@ -476,7 +487,7 @@
         ASSERT_EQ(OK, igbProducer->requestBuffer(slot, &buf));
         allocated.push_back({slot, fence});
     }
-    for (int i = 0; i < allocated.size(); i++) {
+    for (size_t i = 0; i < allocated.size(); i++) {
         igbProducer->cancelBuffer(allocated[i].first, allocated[i].second);
     }
 
@@ -1313,14 +1324,14 @@
     // Before connecting to the surface, we do not get a valid transform hint
     int transformHint;
     surface->query(NATIVE_WINDOW_TRANSFORM_HINT, &transformHint);
-    ASSERT_EQ(ui::Transform::ROT_0, transformHint);
+    ASSERT_EQ(ui::Transform::ROT_0, static_cast<ui::Transform::RotationFlags>(transformHint));
 
     ASSERT_EQ(NO_ERROR,
               surface->connect(NATIVE_WINDOW_API_CPU, new TestProducerListener(igbProducer)));
 
     // After connecting to the surface, we should get the correct hint.
     surface->query(NATIVE_WINDOW_TRANSFORM_HINT, &transformHint);
-    ASSERT_EQ(ui::Transform::ROT_90, transformHint);
+    ASSERT_EQ(ui::Transform::ROT_90, static_cast<ui::Transform::RotationFlags>(transformHint));
 
     ANativeWindow_Buffer buffer;
     surface->lock(&buffer, nullptr /* inOutDirtyBounds */);
@@ -1331,13 +1342,13 @@
 
     // The hint does not change and matches the value used when dequeueing the buffer.
     surface->query(NATIVE_WINDOW_TRANSFORM_HINT, &transformHint);
-    ASSERT_EQ(ui::Transform::ROT_90, transformHint);
+    ASSERT_EQ(ui::Transform::ROT_90, static_cast<ui::Transform::RotationFlags>(transformHint));
 
     surface->unlockAndPost();
 
     // After queuing the buffer, we get the updated transform hint
     surface->query(NATIVE_WINDOW_TRANSFORM_HINT, &transformHint);
-    ASSERT_EQ(ui::Transform::ROT_0, transformHint);
+    ASSERT_EQ(ui::Transform::ROT_0, static_cast<ui::Transform::RotationFlags>(transformHint));
 
     adapter.waitForCallbacks();
 }
@@ -1573,7 +1584,7 @@
     FrameEvents* events = nullptr;
     events = history.getFrame(1);
     ASSERT_NE(nullptr, events);
-    ASSERT_EQ(1, events->frameNumber);
+    ASSERT_EQ(1u, events->frameNumber);
     ASSERT_EQ(requestedPresentTimeA, events->requestedPresentTime);
     ASSERT_GE(events->postedTime, postedTimeA);
 
@@ -1591,7 +1602,7 @@
     ASSERT_NE(nullptr, events);
 
     // frame number, requestedPresentTime, and postTime should not have changed
-    ASSERT_EQ(1, events->frameNumber);
+    ASSERT_EQ(1u, events->frameNumber);
     ASSERT_EQ(requestedPresentTimeA, events->requestedPresentTime);
     ASSERT_GE(events->postedTime, postedTimeA);
 
@@ -1606,7 +1617,7 @@
     // we should also have gotten the initial values for the next frame
     events = history.getFrame(2);
     ASSERT_NE(nullptr, events);
-    ASSERT_EQ(2, events->frameNumber);
+    ASSERT_EQ(2u, events->frameNumber);
     ASSERT_EQ(requestedPresentTimeB, events->requestedPresentTime);
     ASSERT_GE(events->postedTime, postedTimeB);
 
@@ -1622,7 +1633,7 @@
     // Check the first frame...
     events = history.getFrame(1);
     ASSERT_NE(nullptr, events);
-    ASSERT_EQ(1, events->frameNumber);
+    ASSERT_EQ(1u, events->frameNumber);
     ASSERT_EQ(requestedPresentTimeA, events->requestedPresentTime);
     ASSERT_GE(events->postedTime, postedTimeA);
     ASSERT_GE(events->latchTime, postedTimeA);
@@ -1636,7 +1647,7 @@
     // ...and the second
     events = history.getFrame(2);
     ASSERT_NE(nullptr, events);
-    ASSERT_EQ(2, events->frameNumber);
+    ASSERT_EQ(2u, events->frameNumber);
     ASSERT_EQ(requestedPresentTimeB, events->requestedPresentTime);
     ASSERT_GE(events->postedTime, postedTimeB);
     ASSERT_GE(events->latchTime, postedTimeB);
@@ -1650,7 +1661,7 @@
     // ...and finally the third!
     events = history.getFrame(3);
     ASSERT_NE(nullptr, events);
-    ASSERT_EQ(3, events->frameNumber);
+    ASSERT_EQ(3u, events->frameNumber);
     ASSERT_EQ(requestedPresentTimeC, events->requestedPresentTime);
     ASSERT_GE(events->postedTime, postedTimeC);
 
@@ -1677,7 +1688,7 @@
     FrameEvents* events = nullptr;
     events = history.getFrame(1);
     ASSERT_NE(nullptr, events);
-    ASSERT_EQ(1, events->frameNumber);
+    ASSERT_EQ(1u, events->frameNumber);
     ASSERT_EQ(requestedPresentTimeA, events->requestedPresentTime);
     ASSERT_GE(events->postedTime, postedTimeA);
 
@@ -1692,7 +1703,7 @@
     ASSERT_NE(nullptr, events);
 
     // frame number, requestedPresentTime, and postTime should not have changed
-    ASSERT_EQ(1, events->frameNumber);
+    ASSERT_EQ(1u, events->frameNumber);
     ASSERT_EQ(requestedPresentTimeA, events->requestedPresentTime);
     ASSERT_GE(events->postedTime, postedTimeA);
 
@@ -1715,7 +1726,7 @@
     adapter.waitForCallback(3);
 
     // frame number, requestedPresentTime, and postTime should not have changed
-    ASSERT_EQ(1, events->frameNumber);
+    ASSERT_EQ(1u, events->frameNumber);
     ASSERT_EQ(requestedPresentTimeA, events->requestedPresentTime);
     ASSERT_GE(events->postedTime, postedTimeA);
 
@@ -1729,7 +1740,7 @@
     // we should also have gotten values for the presented frame
     events = history.getFrame(2);
     ASSERT_NE(nullptr, events);
-    ASSERT_EQ(2, events->frameNumber);
+    ASSERT_EQ(2u, events->frameNumber);
     ASSERT_EQ(requestedPresentTimeB, events->requestedPresentTime);
     ASSERT_GE(events->postedTime, postedTimeB);
     ASSERT_GE(events->latchTime, postedTimeB);
@@ -1751,7 +1762,7 @@
 
     // frame number, requestedPresentTime, and postTime should not have changed
     events = history.getFrame(1);
-    ASSERT_EQ(1, events->frameNumber);
+    ASSERT_EQ(1u, events->frameNumber);
     ASSERT_EQ(requestedPresentTimeA, events->requestedPresentTime);
     ASSERT_GE(events->postedTime, postedTimeA);
 
@@ -1765,7 +1776,7 @@
     // we should also have gotten values for the presented frame
     events = history.getFrame(2);
     ASSERT_NE(nullptr, events);
-    ASSERT_EQ(2, events->frameNumber);
+    ASSERT_EQ(2u, events->frameNumber);
     ASSERT_EQ(requestedPresentTimeB, events->requestedPresentTime);
     ASSERT_GE(events->postedTime, postedTimeB);
     ASSERT_GE(events->latchTime, postedTimeB);
diff --git a/libs/gui/tests/BufferQueue_test.cpp b/libs/gui/tests/BufferQueue_test.cpp
index df7739c..1ec6f91 100644
--- a/libs/gui/tests/BufferQueue_test.cpp
+++ b/libs/gui/tests/BufferQueue_test.cpp
@@ -119,8 +119,7 @@
     }
 
     sp<IServiceManager> serviceManager = defaultServiceManager();
-    sp<IBinder> binderProducer =
-        serviceManager->getService(PRODUCER_NAME);
+    sp<IBinder> binderProducer = serviceManager->waitForService(PRODUCER_NAME);
     mProducer = interface_cast<IGraphicBufferProducer>(binderProducer);
     EXPECT_TRUE(mProducer != nullptr);
     sp<IBinder> binderConsumer =
@@ -1114,7 +1113,7 @@
 
     // Check onBuffersDiscarded is called with correct slots
     auto buffersDiscarded = pl->getDiscardedSlots();
-    ASSERT_EQ(buffersDiscarded.size(), 1);
+    ASSERT_EQ(buffersDiscarded.size(), 1u);
     ASSERT_EQ(buffersDiscarded[0], releasedSlot);
 
     // Check no free buffers in dump
@@ -1239,7 +1238,7 @@
     ASSERT_EQ(OK, mConsumer->detachBuffer(item.mSlot));
 
     // Check whether the slot from IProducerListener is same to the detached slot.
-    ASSERT_EQ(pl->getDetachedSlots().size(), 1);
+    ASSERT_EQ(pl->getDetachedSlots().size(), 1u);
     ASSERT_EQ(pl->getDetachedSlots()[0], slots[1]);
 
     // Dequeue another buffer.
diff --git a/libs/gui/tests/DisplayedContentSampling_test.cpp b/libs/gui/tests/DisplayedContentSampling_test.cpp
index 0a2750a..bffb3f0 100644
--- a/libs/gui/tests/DisplayedContentSampling_test.cpp
+++ b/libs/gui/tests/DisplayedContentSampling_test.cpp
@@ -116,10 +116,10 @@
     EXPECT_EQ(OK, status);
     if (stats.numFrames <= 0) return;
 
-    if (componentMask & (0x1 << 0)) EXPECT_NE(0, stats.component_0_sample.size());
-    if (componentMask & (0x1 << 1)) EXPECT_NE(0, stats.component_1_sample.size());
-    if (componentMask & (0x1 << 2)) EXPECT_NE(0, stats.component_2_sample.size());
-    if (componentMask & (0x1 << 3)) EXPECT_NE(0, stats.component_3_sample.size());
+    if (componentMask & (0x1 << 0)) EXPECT_NE(0u, stats.component_0_sample.size());
+    if (componentMask & (0x1 << 1)) EXPECT_NE(0u, stats.component_1_sample.size());
+    if (componentMask & (0x1 << 2)) EXPECT_NE(0u, stats.component_2_sample.size());
+    if (componentMask & (0x1 << 3)) EXPECT_NE(0u, stats.component_3_sample.size());
 }
 
 } // namespace android
diff --git a/libs/gui/tests/EndToEndNativeInputTest.cpp b/libs/gui/tests/EndToEndNativeInputTest.cpp
index 9791212..f441eaa 100644
--- a/libs/gui/tests/EndToEndNativeInputTest.cpp
+++ b/libs/gui/tests/EndToEndNativeInputTest.cpp
@@ -24,6 +24,7 @@
 
 #include <memory>
 
+#include <android-base/thread_annotations.h>
 #include <android/gui/BnWindowInfosReportedListener.h>
 #include <android/keycodes.h>
 #include <android/native_window.h>
@@ -78,21 +79,22 @@
 class SynchronousWindowInfosReportedListener : public gui::BnWindowInfosReportedListener {
 public:
     binder::Status onWindowInfosReported() override {
-        std::lock_guard<std::mutex> lock{mMutex};
+        std::scoped_lock lock{mLock};
         mWindowInfosReported = true;
         mConditionVariable.notify_one();
         return binder::Status::ok();
     }
 
     void wait() {
-        std::unique_lock<std::mutex> lock{mMutex};
-        mConditionVariable.wait(lock, [&] { return mWindowInfosReported; });
+        std::unique_lock lock{mLock};
+        android::base::ScopedLockAssertion assumeLocked(mLock);
+        mConditionVariable.wait(lock, [&]() REQUIRES(mLock) { return mWindowInfosReported; });
     }
 
 private:
-    std::mutex mMutex;
+    std::mutex mLock;
     std::condition_variable mConditionVariable;
-    bool mWindowInfosReported{false};
+    bool mWindowInfosReported GUARDED_BY(mLock){false};
 };
 
 class InputSurface {
@@ -195,7 +197,7 @@
         EXPECT_EQ(hasFocus, focusEvent->getHasFocus());
     }
 
-    void expectTap(int x, int y) {
+    void expectTap(float x, float y) {
         InputEvent* ev = consumeEvent();
         ASSERT_NE(ev, nullptr);
         ASSERT_EQ(InputEventType::MOTION, ev->getType());
@@ -250,7 +252,7 @@
         EXPECT_EQ(0, mev->getFlags() & VERIFIED_MOTION_EVENT_FLAGS);
     }
 
-    void expectKey(uint32_t keycode) {
+    void expectKey(int32_t keycode) {
         InputEvent *ev = consumeEvent();
         ASSERT_NE(ev, nullptr);
         ASSERT_EQ(InputEventType::KEY, ev->getType());
@@ -268,6 +270,11 @@
         EXPECT_EQ(0, keyEvent->getFlags() & VERIFIED_KEY_EVENT_FLAGS);
     }
 
+    void assertNoEvent() {
+        InputEvent* event = consumeEvent(/*timeout=*/100ms);
+        ASSERT_EQ(event, nullptr) << "Expected no event, but got " << *event;
+    }
+
     virtual ~InputSurface() {
         if (mClientChannel) {
             mInputFlinger->removeInputChannel(mClientChannel->getConnectionToken());
@@ -937,9 +944,7 @@
     surface->showAt(100, 100);
 
     injectTap(101, 101);
-
-    EXPECT_NE(surface->consumeEvent(), nullptr);
-    EXPECT_NE(surface->consumeEvent(), nullptr);
+    surface->expectTap(1, 1);
 
     surface->requestFocus();
     surface->assertFocusChange(true);
@@ -956,9 +961,7 @@
     surface->showAt(100, 100);
 
     injectTap(101, 101);
-
-    EXPECT_NE(surface->consumeEvent(), nullptr);
-    EXPECT_NE(surface->consumeEvent(), nullptr);
+    surface->expectTap(.5, .5);
 
     surface->requestFocus();
     surface->assertFocusChange(true);
@@ -977,12 +980,12 @@
     obscuringSurface->mInputInfo.ownerUid = gui::Uid{22222};
     obscuringSurface->showAt(100, 100);
     injectTap(101, 101);
-    EXPECT_EQ(surface->consumeEvent(/*timeout=*/100ms), nullptr);
+    surface->assertNoEvent();
 
     surface->requestFocus();
     surface->assertFocusChange(true);
     injectKey(AKEYCODE_V);
-    EXPECT_EQ(surface->consumeEvent(/*timeout=*/100ms), nullptr);
+    surface->assertNoEvent();
 }
 
 TEST_F(InputSurfacesTest, strict_unobscured_input_partially_obscured_window) {
@@ -998,12 +1001,12 @@
 
     injectTap(101, 101);
 
-    EXPECT_EQ(surface->consumeEvent(/*timeout=*/100ms), nullptr);
+    surface->assertNoEvent();
 
     surface->requestFocus();
     surface->assertFocusChange(true);
     injectKey(AKEYCODE_V);
-    EXPECT_EQ(surface->consumeEvent(/*timeout=*/100ms), nullptr);
+    surface->assertNoEvent();
 }
 
 TEST_F(InputSurfacesTest, strict_unobscured_input_alpha_window) {
@@ -1020,12 +1023,12 @@
 
     injectTap(101, 101);
 
-    EXPECT_EQ(surface->consumeEvent(/*timeout=*/100ms), nullptr);
+    surface->assertNoEvent();
 
     surface->requestFocus();
     surface->assertFocusChange(true);
     injectKey(AKEYCODE_V);
-    EXPECT_EQ(surface->consumeEvent(/*timeout=*/100ms), nullptr);
+    surface->assertNoEvent();
 }
 
 TEST_F(InputSurfacesTest, strict_unobscured_input_cropped_window) {
@@ -1042,12 +1045,12 @@
 
     injectTap(111, 111);
 
-    EXPECT_EQ(surface->consumeEvent(/*timeout=*/100ms), nullptr);
+    surface->assertNoEvent();
 
     surface->requestFocus();
     surface->assertFocusChange(true);
     injectKey(AKEYCODE_V);
-    EXPECT_EQ(surface->consumeEvent(/*timeout=*/100ms), nullptr);
+    surface->assertNoEvent();
 }
 
 TEST_F(InputSurfacesTest, ignore_touch_region_with_zero_sized_blast) {
@@ -1071,13 +1074,12 @@
     surface->showAt(100, 100);
 
     injectTap(101, 101);
-
-    EXPECT_EQ(surface->consumeEvent(/*timeout=*/100ms), nullptr);
+    surface->assertNoEvent();
 
     surface->requestFocus();
     surface->assertFocusChange(true);
     injectKey(AKEYCODE_V);
-    EXPECT_EQ(surface->consumeEvent(/*timeout=*/100ms), nullptr);
+    surface->assertNoEvent();
 }
 
 TEST_F(InputSurfacesTest, layer_with_valid_crop_can_be_focused) {
@@ -1112,7 +1114,7 @@
 
     // Does not receive events outside its crop
     injectTap(26, 26);
-    EXPECT_EQ(containerSurface->consumeEvent(/*timeout=*/100ms), nullptr);
+    containerSurface->assertNoEvent();
 }
 
 /**
@@ -1137,7 +1139,7 @@
 
     // Does not receive events outside parent bounds
     injectTap(31, 31);
-    EXPECT_EQ(containerSurface->consumeEvent(/*timeout=*/100ms), nullptr);
+    containerSurface->assertNoEvent();
 }
 
 /**
@@ -1163,7 +1165,7 @@
     // Does not receive events outside crop layer bounds
     injectTap(21, 21);
     injectTap(71, 71);
-    EXPECT_EQ(containerSurface->consumeEvent(/*timeout=*/100ms), nullptr);
+    containerSurface->assertNoEvent();
 }
 
 TEST_F(InputSurfacesTest, child_container_with_no_input_channel_blocks_parent) {
@@ -1180,7 +1182,7 @@
             [&](auto &t, auto &sc) { t.reparent(sc, parent->mSurfaceControl); });
     injectTap(101, 101);
 
-    EXPECT_EQ(parent->consumeEvent(/*timeout=*/100ms), nullptr);
+    parent->assertNoEvent();
 }
 
 class MultiDisplayTests : public InputSurfacesTest {
@@ -1229,7 +1231,7 @@
 
     // Touches should be dropped if the layer is on an invalid display.
     injectTapOnDisplay(101, 101, layerStack.id);
-    EXPECT_EQ(surface->consumeEvent(/*timeout=*/100ms), nullptr);
+    surface->assertNoEvent();
 
     // However, we still let the window be focused and receive keys.
     surface->requestFocus(layerStack.id);
@@ -1267,12 +1269,12 @@
 
     injectTapOnDisplay(101, 101, layerStack.id);
 
-    EXPECT_EQ(surface->consumeEvent(/*timeout=*/100ms), nullptr);
+    surface->assertNoEvent();
 
     surface->requestFocus(layerStack.id);
     surface->assertFocusChange(true);
     injectKeyOnDisplay(AKEYCODE_V, layerStack.id);
-    EXPECT_EQ(surface->consumeEvent(/*timeout=*/100ms), nullptr);
+    surface->assertNoEvent();
 }
 
 TEST_F(MultiDisplayTests, dont_drop_input_for_secure_layer_on_secure_display) {
@@ -1292,8 +1294,7 @@
     surface->showAt(100, 100);
 
     injectTapOnDisplay(101, 101, layerStack.id);
-    EXPECT_NE(surface->consumeEvent(), nullptr);
-    EXPECT_NE(surface->consumeEvent(), nullptr);
+    surface->expectTap(1, 1);
 
     surface->requestFocus(layerStack.id);
     surface->assertFocusChange(true);
diff --git a/libs/gui/tests/Surface_test.cpp b/libs/gui/tests/Surface_test.cpp
index 93bf4fa..f4b059c 100644
--- a/libs/gui/tests/Surface_test.cpp
+++ b/libs/gui/tests/Surface_test.cpp
@@ -173,7 +173,7 @@
         // Acquire and free 1+extraDiscardedBuffers buffer, check onBufferReleased is called.
         std::vector<BufferItem> releasedItems;
         releasedItems.resize(1+extraDiscardedBuffers);
-        for (int i = 0; i < releasedItems.size(); i++) {
+        for (size_t i = 0; i < releasedItems.size(); i++) {
             ASSERT_EQ(NO_ERROR, consumer->acquireBuffer(&releasedItems[i], 0));
             ASSERT_EQ(NO_ERROR, consumer->releaseBuffer(releasedItems[i].mSlot,
                     releasedItems[i].mFrameNumber, EGL_NO_DISPLAY, EGL_NO_SYNC_KHR,
@@ -197,7 +197,7 @@
             // Check onBufferDiscarded is called with correct buffer
             auto discardedBuffers = listener->getDiscardedBuffers();
             ASSERT_EQ(discardedBuffers.size(), releasedItems.size());
-            for (int i = 0; i < releasedItems.size(); i++) {
+            for (size_t i = 0; i < releasedItems.size(); i++) {
                 ASSERT_EQ(discardedBuffers[i], releasedItems[i].mGraphicBuffer);
             }
 
diff --git a/libs/input/InputConsumer.cpp b/libs/input/InputConsumer.cpp
index 41ecfe3..be2110e 100644
--- a/libs/input/InputConsumer.cpp
+++ b/libs/input/InputConsumer.cpp
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <cstdint>
 #define LOG_TAG "InputTransport"
 #define ATRACE_TAG ATRACE_TAG_INPUT
 
@@ -194,9 +195,21 @@
 
 InputConsumer::InputConsumer(const std::shared_ptr<InputChannel>& channel,
                              bool enableTouchResampling)
-      : mResampleTouch(enableTouchResampling), mChannel(channel), mMsgDeferred(false) {}
+      : mResampleTouch(enableTouchResampling),
+        mChannel(channel),
+        mProcessingTraceTag(StringPrintf("InputConsumer processing on %s (%p)",
+                                         mChannel->getName().c_str(), this)),
+        mLifetimeTraceTag(StringPrintf("InputConsumer lifetime on %s (%p)",
+                                       mChannel->getName().c_str(), this)),
+        mLifetimeTraceCookie(
+                static_cast<int32_t>(reinterpret_cast<std::uintptr_t>(this) & 0xFFFFFFFF)),
+        mMsgDeferred(false) {
+    ATRACE_ASYNC_BEGIN(mLifetimeTraceTag.c_str(), /*cookie=*/mLifetimeTraceCookie);
+}
 
-InputConsumer::~InputConsumer() {}
+InputConsumer::~InputConsumer() {
+    ATRACE_ASYNC_END(mLifetimeTraceTag.c_str(), /*cookie=*/mLifetimeTraceCookie);
+}
 
 bool InputConsumer::isTouchResamplingEnabled() {
     return property_get_bool(PROPERTY_RESAMPLING_ENABLED, true);
@@ -228,7 +241,7 @@
                                     mMsg.header.seq);
 
                 // Trace the event processing timeline - event was just read from the socket
-                ATRACE_ASYNC_BEGIN("InputConsumer processing", /*cookie=*/mMsg.header.seq);
+                ATRACE_ASYNC_BEGIN(mProcessingTraceTag.c_str(), /*cookie=*/mMsg.header.seq);
             }
             if (result) {
                 // Consume the next batched event unless batches are being held for later.
@@ -769,7 +782,7 @@
         popConsumeTime(seq);
 
         // Trace the event processing timeline - event was just finished
-        ATRACE_ASYNC_END("InputConsumer processing", /*cookie=*/seq);
+        ATRACE_ASYNC_END(mProcessingTraceTag.c_str(), /*cookie=*/seq);
     }
     return result;
 }
diff --git a/libs/input/MotionPredictor.cpp b/libs/input/MotionPredictor.cpp
index 77292d4..5b61d39 100644
--- a/libs/input/MotionPredictor.cpp
+++ b/libs/input/MotionPredictor.cpp
@@ -18,6 +18,7 @@
 
 #include <input/MotionPredictor.h>
 
+#include <algorithm>
 #include <array>
 #include <cinttypes>
 #include <cmath>
@@ -62,6 +63,11 @@
     return {.x = axisTo.x + x_delta, .y = axisTo.y + y_delta};
 }
 
+float normalizeRange(float x, float min, float max) {
+    const float normalized = (x - min) / (max - min);
+    return std::min(1.0f, std::max(0.0f, normalized));
+}
+
 } // namespace
 
 // --- JerkTracker ---
@@ -255,6 +261,17 @@
     int64_t predictionTime = mBuffers->lastTimestamp();
     const int64_t futureTime = timestamp + mPredictionTimestampOffsetNanos;
 
+    const float jerkMagnitude = mJerkTracker.jerkMagnitude().value_or(0);
+    const float fractionKept =
+            1 - normalizeRange(jerkMagnitude, mModel->config().lowJerk, mModel->config().highJerk);
+    // float to ensure proper division below.
+    const float predictionTimeWindow = futureTime - predictionTime;
+    const int maxNumPredictions = static_cast<int>(
+            std::ceil(predictionTimeWindow / mModel->config().predictionInterval * fractionKept));
+    ALOGD_IF(isDebug(),
+             "jerk (d^3p/normalizedDt^3): %f, fraction of prediction window pruned: %f, max number "
+             "of predictions: %d",
+             jerkMagnitude, 1 - fractionKept, maxNumPredictions);
     for (size_t i = 0; i < static_cast<size_t>(predictedR.size()) && predictionTime <= futureTime;
          ++i) {
         if (predictedR[i] < mModel->config().distanceNoiseFloor) {
@@ -269,13 +286,12 @@
             break;
         }
         if (input_flags::enable_prediction_pruning_via_jerk_thresholding()) {
-            // TODO(b/266747654): Stop predictions if confidence is < some threshold
-            // Arbitrarily high pruning index, will correct once jerk thresholding is implemented.
-            const size_t upperBoundPredictionIndex = std::numeric_limits<size_t>::max();
-            if (i > upperBoundPredictionIndex) {
+            if (i >= static_cast<size_t>(maxNumPredictions)) {
                 break;
             }
         }
+        // TODO(b/266747654): Stop predictions if confidence is < some
+        // threshold. Currently predictions are pruned via jerk thresholding.
 
         const TfLiteMotionPredictorSample::Point predictedPoint =
                 convertPrediction(axisFrom, axisTo, predictedR[i], predictedPhi[i]);
diff --git a/libs/input/TfLiteMotionPredictor.cpp b/libs/input/TfLiteMotionPredictor.cpp
index d17476e..b843a4b 100644
--- a/libs/input/TfLiteMotionPredictor.cpp
+++ b/libs/input/TfLiteMotionPredictor.cpp
@@ -281,6 +281,8 @@
     Config config{
             .predictionInterval = parseXMLInt64(*configRoot, "prediction-interval"),
             .distanceNoiseFloor = parseXMLFloat(*configRoot, "distance-noise-floor"),
+            .lowJerk = parseXMLFloat(*configRoot, "low-jerk"),
+            .highJerk = parseXMLFloat(*configRoot, "high-jerk"),
     };
 
     return std::unique_ptr<TfLiteMotionPredictorModel>(
diff --git a/libs/input/android/os/InputConfig.aidl b/libs/input/android/os/InputConfig.aidl
index 5d39155..6b97cbb 100644
--- a/libs/input/android/os/InputConfig.aidl
+++ b/libs/input/android/os/InputConfig.aidl
@@ -157,4 +157,12 @@
      * like StatusBar and TaskBar.
      */
     GLOBAL_STYLUS_BLOCKS_TOUCH   = 1 << 17,
+
+    /**
+     * InputConfig used to indicate that this window is sensitive for tracing.
+     * This must be set on windows that use {@link WindowManager.LayoutParams#FLAG_SECURE},
+     * but it may also be set without setting FLAG_SECURE. The tracing configuration will
+     * determine how these sensitive events are eventually traced.
+     */
+     SENSITIVE_FOR_TRACING       = 1 << 18,
 }
diff --git a/libs/input/input_flags.aconfig b/libs/input/input_flags.aconfig
index e041c51..e161c2a 100644
--- a/libs/input/input_flags.aconfig
+++ b/libs/input/input_flags.aconfig
@@ -137,3 +137,10 @@
   is_fixed_read_only: true
 
 }
+
+flag {
+  name: "enable_multi_device_same_window_stream"
+  namespace: "input"
+  description: "Allow multiple input devices to be active in the same window simultaneously"
+  bug: "330752824"
+}
diff --git a/libs/input/tests/Android.bp b/libs/input/tests/Android.bp
index e67a65a..ee140b7 100644
--- a/libs/input/tests/Android.bp
+++ b/libs/input/tests/Android.bp
@@ -36,6 +36,7 @@
         "tensorflow_headers",
     ],
     static_libs: [
+        "libflagtest",
         "libgmock",
         "libgui_window_info_static",
         "libinput",
diff --git a/libs/input/tests/MotionPredictor_test.cpp b/libs/input/tests/MotionPredictor_test.cpp
index f74874c..dc38fef 100644
--- a/libs/input/tests/MotionPredictor_test.cpp
+++ b/libs/input/tests/MotionPredictor_test.cpp
@@ -14,9 +14,12 @@
  * limitations under the License.
  */
 
+// TODO(b/331815574): Decouple this test from assumed config values.
 #include <chrono>
 #include <cmath>
 
+#include <com_android_input_flags.h>
+#include <flag_macros.h>
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 #include <gui/constants.h>
@@ -197,18 +200,14 @@
 TEST(MotionPredictorTest, FollowsGesture) {
     MotionPredictor predictor(/*predictionTimestampOffsetNanos=*/0,
                               []() { return true /*enable prediction*/; });
+    predictor.record(getMotionEvent(DOWN, 3.75, 3, 20ms));
+    predictor.record(getMotionEvent(MOVE, 4.8, 3, 30ms));
+    predictor.record(getMotionEvent(MOVE, 6.2, 3, 40ms));
+    predictor.record(getMotionEvent(MOVE, 8, 3, 50ms));
+    EXPECT_NE(nullptr, predictor.predict(90 * NSEC_PER_MSEC));
 
-    // MOVE without a DOWN is ignored.
-    predictor.record(getMotionEvent(MOVE, 1, 3, 10ms));
-    EXPECT_EQ(nullptr, predictor.predict(20 * NSEC_PER_MSEC));
-
-    predictor.record(getMotionEvent(DOWN, 2, 5, 20ms));
-    predictor.record(getMotionEvent(MOVE, 2, 7, 30ms));
-    predictor.record(getMotionEvent(MOVE, 3, 9, 40ms));
-    EXPECT_NE(nullptr, predictor.predict(50 * NSEC_PER_MSEC));
-
-    predictor.record(getMotionEvent(UP, 4, 11, 50ms));
-    EXPECT_EQ(nullptr, predictor.predict(20 * NSEC_PER_MSEC));
+    predictor.record(getMotionEvent(UP, 10.25, 3, 60ms));
+    EXPECT_EQ(nullptr, predictor.predict(100 * NSEC_PER_MSEC));
 }
 
 TEST(MotionPredictorTest, MultipleDevicesNotSupported) {
@@ -250,6 +249,63 @@
     ASSERT_FALSE(predictor.isPredictionAvailable(/*deviceId=*/1, AINPUT_SOURCE_TOUCHSCREEN));
 }
 
+TEST_WITH_FLAGS(
+        MotionPredictorTest, LowJerkNoPruning,
+        REQUIRES_FLAGS_ENABLED(ACONFIG_FLAG(com::android::input::flags,
+                                            enable_prediction_pruning_via_jerk_thresholding))) {
+    MotionPredictor predictor(/*predictionTimestampOffsetNanos=*/0,
+                              []() { return true /*enable prediction*/; });
+
+    // Jerk is low (0.05 normalized).
+    predictor.record(getMotionEvent(DOWN, 2, 7, 20ms));
+    predictor.record(getMotionEvent(MOVE, 2.75, 7, 30ms));
+    predictor.record(getMotionEvent(MOVE, 3.8, 7, 40ms));
+    predictor.record(getMotionEvent(MOVE, 5.2, 7, 50ms));
+    predictor.record(getMotionEvent(MOVE, 7, 7, 60ms));
+    std::unique_ptr<MotionEvent> predicted = predictor.predict(90 * NSEC_PER_MSEC);
+    EXPECT_NE(nullptr, predicted);
+    EXPECT_EQ(static_cast<size_t>(5), predicted->getHistorySize() + 1);
+}
+
+TEST_WITH_FLAGS(
+        MotionPredictorTest, HighJerkPredictionsPruned,
+        REQUIRES_FLAGS_ENABLED(ACONFIG_FLAG(com::android::input::flags,
+                                            enable_prediction_pruning_via_jerk_thresholding))) {
+    MotionPredictor predictor(/*predictionTimestampOffsetNanos=*/0,
+                              []() { return true /*enable prediction*/; });
+
+    // Jerk is incredibly high.
+    predictor.record(getMotionEvent(DOWN, 0, 5, 20ms));
+    predictor.record(getMotionEvent(MOVE, 0, 70, 30ms));
+    predictor.record(getMotionEvent(MOVE, 0, 139, 40ms));
+    predictor.record(getMotionEvent(MOVE, 0, 1421, 50ms));
+    predictor.record(getMotionEvent(MOVE, 0, 41233, 60ms));
+    std::unique_ptr<MotionEvent> predicted = predictor.predict(90 * NSEC_PER_MSEC);
+    EXPECT_EQ(nullptr, predicted);
+}
+
+TEST_WITH_FLAGS(
+        MotionPredictorTest, MediumJerkPredictionsSomePruned,
+        REQUIRES_FLAGS_ENABLED(ACONFIG_FLAG(com::android::input::flags,
+                                            enable_prediction_pruning_via_jerk_thresholding))) {
+    MotionPredictor predictor(/*predictionTimestampOffsetNanos=*/0,
+                              []() { return true /*enable prediction*/; });
+
+    // Jerk is medium (1.5 normalized, which is halfway between LOW_JANK and HIGH_JANK)
+    predictor.record(getMotionEvent(DOWN, 0, 4, 20ms));
+    predictor.record(getMotionEvent(MOVE, 0, 6.25, 30ms));
+    predictor.record(getMotionEvent(MOVE, 0, 9.4, 40ms));
+    predictor.record(getMotionEvent(MOVE, 0, 13.6, 50ms));
+    predictor.record(getMotionEvent(MOVE, 0, 19, 60ms));
+    std::unique_ptr<MotionEvent> predicted = predictor.predict(82 * NSEC_PER_MSEC);
+    EXPECT_NE(nullptr, predicted);
+    // Halfway between LOW_JANK and HIGH_JANK means that half of the predictions
+    // will be pruned. If model prediction window is close enough to predict()
+    // call time window, then half of the model predictions (5/2 -> 2) will be
+    // ouputted.
+    EXPECT_EQ(static_cast<size_t>(3), predicted->getHistorySize() + 1);
+}
+
 using AtomFields = MotionPredictorMetricsManager::AtomFields;
 using ReportAtomFunction = MotionPredictorMetricsManager::ReportAtomFunction;
 
diff --git a/services/inputflinger/dispatcher/InputDispatcher.cpp b/services/inputflinger/dispatcher/InputDispatcher.cpp
index 4d70a33..4389d65 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.cpp
+++ b/services/inputflinger/dispatcher/InputDispatcher.cpp
@@ -2532,11 +2532,19 @@
             if (!isHoverAction) {
                 const bool isDownOrPointerDown = maskedAction == AMOTION_EVENT_ACTION_DOWN ||
                         maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN;
-                tempTouchState.addOrUpdateWindow(windowHandle, InputTarget::DispatchMode::AS_IS,
-                                                 targetFlags, entry.deviceId, {pointer},
-                                                 isDownOrPointerDown
-                                                         ? std::make_optional(entry.eventTime)
-                                                         : std::nullopt);
+                Result<void> addResult =
+                        tempTouchState.addOrUpdateWindow(windowHandle,
+                                                         InputTarget::DispatchMode::AS_IS,
+                                                         targetFlags, entry.deviceId, {pointer},
+                                                         isDownOrPointerDown
+                                                                 ? std::make_optional(
+                                                                           entry.eventTime)
+                                                                 : std::nullopt);
+                if (!addResult.ok()) {
+                    LOG(ERROR) << "Error while processing " << entry << " for "
+                               << windowHandle->getName();
+                    logDispatchStateLocked();
+                }
                 // If this is the pointer going down and the touched window has a wallpaper
                 // then also add the touched wallpaper windows so they are locked in for the
                 // duration of the touch gesture. We do not collect wallpapers during HOVER_MOVE or
@@ -4383,7 +4391,7 @@
         // different pointer ids than we expected based on the previous ACTION_DOWN
         // or ACTION_POINTER_DOWN events that caused us to decide to split the pointers
         // in this way.
-        ALOGW("Dropping split motion event because the pointer count is %d but "
+        ALOGW("Dropping split motion event because the pointer count is %zu but "
               "we expected there to be %zu pointers.  This probably means we received "
               "a broken sequence of pointer ids from the input device: %s",
               pointerCoords.size(), pointerIds.count(),
diff --git a/services/inputflinger/dispatcher/InputState.cpp b/services/inputflinger/dispatcher/InputState.cpp
index 1fec9b7..c2d2b7b 100644
--- a/services/inputflinger/dispatcher/InputState.cpp
+++ b/services/inputflinger/dispatcher/InputState.cpp
@@ -95,12 +95,14 @@
         return true;
     }
 
-    if (!mMotionMementos.empty()) {
-        const MotionMemento& lastMemento = mMotionMementos.back();
-        if (isStylusEvent(lastMemento.source, lastMemento.pointerProperties) &&
-            !isStylusEvent(entry.source, entry.pointerProperties)) {
-            // We already have a stylus stream, and the new event is not from stylus.
-            return false;
+    if (!input_flags::enable_multi_device_same_window_stream()) {
+        if (!mMotionMementos.empty()) {
+            const MotionMemento& lastMemento = mMotionMementos.back();
+            if (isStylusEvent(lastMemento.source, lastMemento.pointerProperties) &&
+                !isStylusEvent(entry.source, entry.pointerProperties)) {
+                // We already have a stylus stream, and the new event is not from stylus.
+                return false;
+            }
         }
     }
 
@@ -345,24 +347,26 @@
         return false;
     }
 
-    if (isStylusEvent(lastMemento.source, lastMemento.pointerProperties)) {
-        // A stylus is already active.
-        if (isStylusEvent(motionEntry.source, motionEntry.pointerProperties) &&
-            actionMasked == AMOTION_EVENT_ACTION_DOWN) {
-            // If this new event is from a different device, then cancel the old
-            // stylus and allow the new stylus to take over, but only if it's going down.
-            // Otherwise, they will start to race each other.
-            return true;
+    if (!input_flags::enable_multi_device_same_window_stream()) {
+        if (isStylusEvent(lastMemento.source, lastMemento.pointerProperties)) {
+            // A stylus is already active.
+            if (isStylusEvent(motionEntry.source, motionEntry.pointerProperties) &&
+                actionMasked == AMOTION_EVENT_ACTION_DOWN) {
+                // If this new event is from a different device, then cancel the old
+                // stylus and allow the new stylus to take over, but only if it's going down.
+                // Otherwise, they will start to race each other.
+                return true;
+            }
+
+            // Keep the current stylus gesture.
+            return false;
         }
 
-        // Keep the current stylus gesture.
-        return false;
-    }
-
-    // Cancel the current gesture if this is a start of a new gesture from a new device.
-    if (actionMasked == AMOTION_EVENT_ACTION_DOWN ||
-        actionMasked == AMOTION_EVENT_ACTION_HOVER_ENTER) {
-        return true;
+        // Cancel the current gesture if this is a start of a new gesture from a new device.
+        if (actionMasked == AMOTION_EVENT_ACTION_DOWN ||
+            actionMasked == AMOTION_EVENT_ACTION_HOVER_ENTER) {
+            return true;
+        }
     }
     // By default, don't cancel any events.
     return false;
diff --git a/services/inputflinger/dispatcher/TouchState.cpp b/services/inputflinger/dispatcher/TouchState.cpp
index f8aa625..0caa5e1 100644
--- a/services/inputflinger/dispatcher/TouchState.cpp
+++ b/services/inputflinger/dispatcher/TouchState.cpp
@@ -70,14 +70,14 @@
     });
 }
 
-void TouchState::addOrUpdateWindow(const sp<WindowInfoHandle>& windowHandle,
-                                   InputTarget::DispatchMode dispatchMode,
-                                   ftl::Flags<InputTarget::Flags> targetFlags, DeviceId deviceId,
-                                   const std::vector<PointerProperties>& touchingPointers,
-                                   std::optional<nsecs_t> firstDownTimeInTarget) {
+android::base::Result<void> TouchState::addOrUpdateWindow(
+        const sp<WindowInfoHandle>& windowHandle, InputTarget::DispatchMode dispatchMode,
+        ftl::Flags<InputTarget::Flags> targetFlags, DeviceId deviceId,
+        const std::vector<PointerProperties>& touchingPointers,
+        std::optional<nsecs_t> firstDownTimeInTarget) {
     if (touchingPointers.empty()) {
         LOG(FATAL) << __func__ << "No pointers specified for " << windowHandle->getName();
-        return;
+        return android::base::Error();
     }
     for (TouchedWindow& touchedWindow : windows) {
         // We do not compare windows by token here because two windows that share the same token
@@ -91,11 +91,12 @@
             // For cases like hover enter/exit or DISPATCH_AS_OUTSIDE a touch window might not have
             // downTime set initially. Need to update existing window when a pointer is down for the
             // window.
-            touchedWindow.addTouchingPointers(deviceId, touchingPointers);
+            android::base::Result<void> addResult =
+                    touchedWindow.addTouchingPointers(deviceId, touchingPointers);
             if (firstDownTimeInTarget) {
                 touchedWindow.trySetDownTimeInTarget(deviceId, *firstDownTimeInTarget);
             }
-            return;
+            return addResult;
         }
     }
     TouchedWindow touchedWindow;
@@ -107,6 +108,7 @@
         touchedWindow.trySetDownTimeInTarget(deviceId, *firstDownTimeInTarget);
     }
     windows.push_back(touchedWindow);
+    return {};
 }
 
 void TouchState::addHoveringPointerToWindow(const sp<WindowInfoHandle>& windowHandle,
diff --git a/services/inputflinger/dispatcher/TouchState.h b/services/inputflinger/dispatcher/TouchState.h
index 3d534bc..559a3fd 100644
--- a/services/inputflinger/dispatcher/TouchState.h
+++ b/services/inputflinger/dispatcher/TouchState.h
@@ -43,11 +43,11 @@
     void removeTouchingPointer(DeviceId deviceId, int32_t pointerId);
     void removeTouchingPointerFromWindow(DeviceId deviceId, int32_t pointerId,
                                          const sp<android::gui::WindowInfoHandle>& windowHandle);
-    void addOrUpdateWindow(const sp<android::gui::WindowInfoHandle>& windowHandle,
-                           InputTarget::DispatchMode dispatchMode,
-                           ftl::Flags<InputTarget::Flags> targetFlags, DeviceId deviceId,
-                           const std::vector<PointerProperties>& touchingPointers,
-                           std::optional<nsecs_t> firstDownTimeInTarget = std::nullopt);
+    android::base::Result<void> addOrUpdateWindow(
+            const sp<android::gui::WindowInfoHandle>& windowHandle,
+            InputTarget::DispatchMode dispatchMode, ftl::Flags<InputTarget::Flags> targetFlags,
+            DeviceId deviceId, const std::vector<PointerProperties>& touchingPointers,
+            std::optional<nsecs_t> firstDownTimeInTarget = std::nullopt);
     void addHoveringPointerToWindow(const sp<android::gui::WindowInfoHandle>& windowHandle,
                                     DeviceId deviceId, const PointerProperties& pointer);
     void removeHoveringPointer(DeviceId deviceId, int32_t pointerId);
diff --git a/services/inputflinger/dispatcher/TouchedWindow.cpp b/services/inputflinger/dispatcher/TouchedWindow.cpp
index 037d7c8..1f86f66 100644
--- a/services/inputflinger/dispatcher/TouchedWindow.cpp
+++ b/services/inputflinger/dispatcher/TouchedWindow.cpp
@@ -20,6 +20,7 @@
 #include <android-base/stringprintf.h>
 #include <input/PrintTools.h>
 
+using android::base::Result;
 using android::base::StringPrintf;
 
 namespace android {
@@ -89,8 +90,8 @@
     hoveringPointers.push_back(pointer);
 }
 
-void TouchedWindow::addTouchingPointers(DeviceId deviceId,
-                                        const std::vector<PointerProperties>& pointers) {
+Result<void> TouchedWindow::addTouchingPointers(DeviceId deviceId,
+                                                const std::vector<PointerProperties>& pointers) {
     std::vector<PointerProperties>& touchingPointers = mDeviceStates[deviceId].touchingPointers;
     const size_t initialSize = touchingPointers.size();
     for (const PointerProperties& pointer : pointers) {
@@ -98,11 +99,14 @@
             return properties.id == pointer.id;
         });
     }
-    if (touchingPointers.size() != initialSize) {
+    const bool foundInconsistentState = touchingPointers.size() != initialSize;
+    touchingPointers.insert(touchingPointers.end(), pointers.begin(), pointers.end());
+    if (foundInconsistentState) {
         LOG(ERROR) << __func__ << ": " << dumpVector(pointers, streamableToString) << ", device "
                    << deviceId << " already in " << *this;
+        return android::base::Error();
     }
-    touchingPointers.insert(touchingPointers.end(), pointers.begin(), pointers.end());
+    return {};
 }
 
 bool TouchedWindow::hasTouchingPointers() const {
diff --git a/services/inputflinger/dispatcher/TouchedWindow.h b/services/inputflinger/dispatcher/TouchedWindow.h
index 0d1531f..4f0ad16 100644
--- a/services/inputflinger/dispatcher/TouchedWindow.h
+++ b/services/inputflinger/dispatcher/TouchedWindow.h
@@ -46,7 +46,8 @@
     bool hasTouchingPointers() const;
     bool hasTouchingPointers(DeviceId deviceId) const;
     std::vector<PointerProperties> getTouchingPointers(DeviceId deviceId) const;
-    void addTouchingPointers(DeviceId deviceId, const std::vector<PointerProperties>& pointers);
+    android::base::Result<void> addTouchingPointers(DeviceId deviceId,
+                                                    const std::vector<PointerProperties>& pointers);
     void removeTouchingPointer(DeviceId deviceId, int32_t pointerId);
     void removeTouchingPointers(DeviceId deviceId, std::bitset<MAX_POINTER_ID + 1> pointers);
     bool hasActiveStylus() const;
diff --git a/services/inputflinger/dispatcher/trace/InputTracer.cpp b/services/inputflinger/dispatcher/trace/InputTracer.cpp
index 1d4d11c..415b696 100644
--- a/services/inputflinger/dispatcher/trace/InputTracer.cpp
+++ b/services/inputflinger/dispatcher/trace/InputTracer.cpp
@@ -86,8 +86,17 @@
         // This is a global monitor, assume its target is the system.
         return {.uid = gui::Uid{AID_SYSTEM}, .isSecureWindow = false};
     }
-    return {target.windowHandle->getInfo()->ownerUid,
-            target.windowHandle->getInfo()->layoutParamsFlags.test(gui::WindowInfo::Flag::SECURE)};
+    const auto& info = *target.windowHandle->getInfo();
+    const bool isSensitiveTarget =
+            info.inputConfig.test(gui::WindowInfo::InputConfig::SENSITIVE_FOR_TRACING);
+
+    // All FLAG_SECURE targets must be marked as sensitive for tracing.
+    if (info.layoutParamsFlags.test(gui::WindowInfo::Flag::SECURE) && !isSensitiveTarget) {
+        LOG(FATAL)
+                << "Input target with FLAG_SECURE does not set InputConfig::SENSITIVE_FOR_TRACING: "
+                << info;
+    }
+    return {target.windowHandle->getInfo()->ownerUid, isSensitiveTarget};
 }
 
 } // namespace
diff --git a/services/inputflinger/tests/FakeWindows.cpp b/services/inputflinger/tests/FakeWindows.cpp
index 0ac2f0f..a6955ec 100644
--- a/services/inputflinger/tests/FakeWindows.cpp
+++ b/services/inputflinger/tests/FakeWindows.cpp
@@ -298,16 +298,21 @@
         const ::testing::Matcher<MotionEvent>& matcher) {
     std::unique_ptr<InputEvent> event = consume(CONSUME_TIMEOUT_EVENT_EXPECTED);
     if (event == nullptr) {
-        ADD_FAILURE() << "No event";
+        std::ostringstream matcherDescription;
+        matcher.DescribeTo(&matcherDescription);
+        ADD_FAILURE() << "No event (expected " << matcherDescription.str() << ") on " << mName;
         return nullptr;
     }
     if (event->getType() != InputEventType::MOTION) {
-        ADD_FAILURE() << "Instead of motion event, got " << *event;
+        ADD_FAILURE() << "Instead of motion event, got " << *event << " on " << mName;
         return nullptr;
     }
     std::unique_ptr<MotionEvent> motionEvent =
             std::unique_ptr<MotionEvent>(static_cast<MotionEvent*>(event.release()));
-    EXPECT_THAT(*motionEvent, matcher);
+    if (motionEvent == nullptr) {
+        return nullptr;
+    }
+    EXPECT_THAT(*motionEvent, matcher) << " on " << mName;
     return motionEvent;
 }
 
diff --git a/services/inputflinger/tests/InputDispatcher_test.cpp b/services/inputflinger/tests/InputDispatcher_test.cpp
index 4bb64fc..62a9235 100644
--- a/services/inputflinger/tests/InputDispatcher_test.cpp
+++ b/services/inputflinger/tests/InputDispatcher_test.cpp
@@ -59,6 +59,8 @@
 using namespace ftl::flag_operators;
 using testing::AllOf;
 using testing::Not;
+using testing::Pointee;
+using testing::UnorderedElementsAre;
 
 namespace {
 
@@ -132,6 +134,40 @@
     return event;
 }
 
+/**
+ * Provide a local override for a flag value. The value is restored when the object of this class
+ * goes out of scope.
+ * This class is not intended to be used directly, because its usage is cumbersome.
+ * Instead, a wrapper macro SCOPED_FLAG_OVERRIDE is provided.
+ */
+class ScopedFlagOverride {
+public:
+    ScopedFlagOverride(std::function<bool()> read, std::function<void(bool)> write, bool value)
+          : mInitialValue(read()), mWriteValue(write) {
+        mWriteValue(value);
+    }
+    ~ScopedFlagOverride() { mWriteValue(mInitialValue); }
+
+private:
+    const bool mInitialValue;
+    std::function<void(bool)> mWriteValue;
+};
+
+typedef bool (*readFlagValueFunction)();
+typedef void (*writeFlagValueFunction)(bool);
+
+/**
+ * Use this macro to locally override a flag value.
+ * Example usage:
+ *    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
+ * Note: this works by creating a local variable in your current scope. Don't call this twice for
+ * the same flag, because the variable names will clash!
+ */
+#define SCOPED_FLAG_OVERRIDE(NAME, VALUE)                                  \
+    readFlagValueFunction read##NAME = com::android::input::flags::NAME;   \
+    writeFlagValueFunction write##NAME = com::android::input::flags::NAME; \
+    ScopedFlagOverride override##NAME(read##NAME, write##NAME, (VALUE))
+
 } // namespace
 
 // --- InputDispatcherTest ---
@@ -1257,7 +1293,9 @@
  * This test reproduces a crash where there is a mismatch between the downTime and eventTime.
  * In the buggy implementation, a tap on the right window would cause a crash.
  */
-TEST_F(InputDispatcherTest, HoverFromLeftToRightAndTap) {
+TEST_F(InputDispatcherTest, HoverFromLeftToRightAndTap_legacy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
+
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> leftWindow =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Left", ADISPLAY_ID_DEFAULT);
@@ -1353,6 +1391,99 @@
 }
 
 /**
+ * Two windows: a window on the left and a window on the right.
+ * Mouse is hovered from the right window into the left window.
+ * Next, we tap on the left window, where the cursor was last seen.
+ * The second tap is done onto the right window.
+ * The mouse and tap are from two different devices.
+ * We technically don't need to set the downtime / eventtime for these events, but setting these
+ * explicitly helps during debugging.
+ * This test reproduces a crash where there is a mismatch between the downTime and eventTime.
+ * In the buggy implementation, a tap on the right window would cause a crash.
+ */
+TEST_F(InputDispatcherTest, HoverFromLeftToRightAndTap) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> leftWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Left", ADISPLAY_ID_DEFAULT);
+    leftWindow->setFrame(Rect(0, 0, 200, 200));
+
+    sp<FakeWindowHandle> rightWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Right", ADISPLAY_ID_DEFAULT);
+    rightWindow->setFrame(Rect(200, 0, 400, 200));
+
+    mDispatcher->onWindowInfosChanged(
+            {{*leftWindow->getInfo(), *rightWindow->getInfo()}, {}, 0, 0});
+    // All times need to start at the current time, otherwise the dispatcher will drop the events as
+    // stale.
+    const nsecs_t baseTime = systemTime(SYSTEM_TIME_MONOTONIC);
+    const int32_t mouseDeviceId = 6;
+    const int32_t touchDeviceId = 4;
+    // Move the cursor from right
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(AMOTION_EVENT_ACTION_HOVER_MOVE, AINPUT_SOURCE_MOUSE)
+                    .deviceId(mouseDeviceId)
+                    .downTime(baseTime + 10)
+                    .eventTime(baseTime + 20)
+                    .pointer(PointerBuilder(0, ToolType::MOUSE).x(300).y(100))
+                    .build());
+    rightWindow->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_HOVER_ENTER));
+
+    // .. to the left window
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(AMOTION_EVENT_ACTION_HOVER_MOVE, AINPUT_SOURCE_MOUSE)
+                    .deviceId(mouseDeviceId)
+                    .downTime(baseTime + 10)
+                    .eventTime(baseTime + 30)
+                    .pointer(PointerBuilder(0, ToolType::MOUSE).x(110).y(100))
+                    .build());
+    rightWindow->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_HOVER_EXIT));
+    leftWindow->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_HOVER_ENTER));
+    // Now tap the left window
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(AMOTION_EVENT_ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                    .deviceId(touchDeviceId)
+                    .downTime(baseTime + 40)
+                    .eventTime(baseTime + 40)
+                    .pointer(PointerBuilder(0, ToolType::FINGER).x(100).y(100))
+                    .build());
+    leftWindow->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_DOWN));
+
+    // release tap
+    mDispatcher->notifyMotion(MotionArgsBuilder(AMOTION_EVENT_ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .downTime(baseTime + 40)
+                                      .eventTime(baseTime + 50)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(100).y(100))
+                                      .build());
+    leftWindow->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_UP));
+
+    // Tap the window on the right
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(AMOTION_EVENT_ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                    .deviceId(touchDeviceId)
+                    .downTime(baseTime + 60)
+                    .eventTime(baseTime + 60)
+                    .pointer(PointerBuilder(0, ToolType::FINGER).x(300).y(100))
+                    .build());
+    rightWindow->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_DOWN));
+
+    // release tap
+    mDispatcher->notifyMotion(MotionArgsBuilder(AMOTION_EVENT_ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .downTime(baseTime + 60)
+                                      .eventTime(baseTime + 70)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(300).y(100))
+                                      .build());
+    rightWindow->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_UP));
+
+    // No more events
+    leftWindow->assertNoEvents();
+    rightWindow->assertNoEvents();
+}
+
+/**
  * Start hovering in a window. While this hover is still active, make another window appear on top.
  * The top, obstructing window has no input channel, so it's not supposed to receive input.
  * While the top window is present, the hovering is stopped.
@@ -1500,6 +1631,7 @@
  * touch is dropped, because stylus should be preferred over touch.
  */
 TEST_F(InputDispatcherMultiDeviceTest, StylusDownBlocksTouchDown) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
@@ -1542,11 +1674,60 @@
 }
 
 /**
+ * One window. Stylus down on the window. Next, touch from another device goes down. Ensure that
+ * touch is not dropped, because multiple devices are allowed to be active in the same window.
+ */
+TEST_F(InputDispatcherMultiDeviceTest, StylusDownDoesNotBlockTouchDown) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 200, 200));
+
+    mDispatcher->onWindowInfosChanged({{*window->getInfo()}, {}, 0, 0});
+
+    constexpr int32_t touchDeviceId = 4;
+    constexpr int32_t stylusDeviceId = 2;
+
+    // Stylus down
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(100).y(110))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(stylusDeviceId)));
+
+    // Touch down
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(140).y(145))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+
+    // Touch move
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(141).y(146))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+
+    // Stylus move
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(101).y(111))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(stylusDeviceId),
+                                     WithCoords(101, 111)));
+
+    window->assertNoEvents();
+}
+
+/**
  * One window and one spy window. Stylus down on the window. Next, touch from another device goes
  * down. Ensure that touch is dropped, because stylus should be preferred over touch.
  * Similar test as above, but with added SPY window.
  */
 TEST_F(InputDispatcherMultiDeviceTest, StylusDownWithSpyBlocksTouchDown) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
@@ -1600,10 +1781,74 @@
 }
 
 /**
+ * One window and one spy window. Stylus down on the window. Next, touch from another device goes
+ * down. Ensure that touch is not dropped, because multiple devices can be active at the same time.
+ * Similar test as above, but with added SPY window.
+ */
+TEST_F(InputDispatcherMultiDeviceTest, StylusDownWithSpyDoesNotBlockTouchDown) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    sp<FakeWindowHandle> spyWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Spy", ADISPLAY_ID_DEFAULT);
+    spyWindow->setFrame(Rect(0, 0, 200, 200));
+    spyWindow->setTrustedOverlay(true);
+    spyWindow->setSpy(true);
+    window->setFrame(Rect(0, 0, 200, 200));
+
+    mDispatcher->onWindowInfosChanged({{*spyWindow->getInfo(), *window->getInfo()}, {}, 0, 0});
+
+    constexpr int32_t touchDeviceId = 4;
+    constexpr int32_t stylusDeviceId = 2;
+
+    // Stylus down
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(100).y(110))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(stylusDeviceId)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(stylusDeviceId)));
+
+    // Touch down
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(140).y(145))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+
+    // Touch move
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(141).y(146))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+
+    // Subsequent stylus movements are delivered correctly
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(101).y(111))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(stylusDeviceId),
+                                     WithCoords(101, 111)));
+    spyWindow->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(stylusDeviceId),
+                                        WithCoords(101, 111)));
+
+    window->assertNoEvents();
+    spyWindow->assertNoEvents();
+}
+
+/**
  * One window. Stylus hover on the window. Next, touch from another device goes down. Ensure that
  * touch is dropped, because stylus hover takes precedence.
  */
 TEST_F(InputDispatcherMultiDeviceTest, StylusHoverBlocksTouchDown) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
@@ -1651,10 +1896,65 @@
 }
 
 /**
+ * One window. Stylus hover on the window. Next, touch from another device goes down. Ensure that
+ * touch is not dropped, because stylus hover and touch can be both active at the same time.
+ */
+TEST_F(InputDispatcherMultiDeviceTest, StylusHoverDoesNotBlockTouchDown) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 200, 200));
+
+    mDispatcher->onWindowInfosChanged({{*window->getInfo()}, {}, 0, 0});
+
+    constexpr int32_t touchDeviceId = 4;
+    constexpr int32_t stylusDeviceId = 2;
+
+    // Stylus down on the window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_ENTER, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(100).y(110))
+                                      .build());
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_ENTER), WithDeviceId(stylusDeviceId)));
+
+    // Touch down on window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(140).y(145))
+                                      .build());
+    // Touch move on window
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(141).y(146))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+
+    // Subsequent stylus movements are delivered correctly
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_MOVE, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(101).y(111))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_HOVER_MOVE),
+                                     WithDeviceId(stylusDeviceId), WithCoords(101, 111)));
+
+    // and subsequent touches continue to work
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(142).y(147))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+    window->assertNoEvents();
+}
+
+/**
  * One window. Touch down on the window. Then, stylus hover on the window from another device.
  * Ensure that touch is canceled, because stylus hover should take precedence.
  */
 TEST_F(InputDispatcherMultiDeviceTest, TouchIsCanceledByStylusHover) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
@@ -1704,11 +2004,66 @@
 }
 
 /**
+ * One window. Touch down on the window. Then, stylus hover on the window from another device.
+ * Ensure that touch is not canceled, because stylus hover can be active at the same time as touch.
+ */
+TEST_F(InputDispatcherMultiDeviceTest, TouchIsNotCanceledByStylusHover) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 200, 200));
+
+    mDispatcher->onWindowInfosChanged({{*window->getInfo()}, {}, 0, 0});
+
+    constexpr int32_t touchDeviceId = 4;
+    constexpr int32_t stylusDeviceId = 2;
+
+    // Touch down on window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(140).y(145))
+                                      .build());
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(141).y(146))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+
+    // Stylus hover on the window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_ENTER, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(100).y(110))
+                                      .build());
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_MOVE, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(101).y(111))
+                                      .build());
+    // Stylus hover movement is received normally
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_HOVER_ENTER),
+                                     WithDeviceId(stylusDeviceId), WithCoords(100, 110)));
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_HOVER_MOVE),
+                                     WithDeviceId(stylusDeviceId), WithCoords(101, 111)));
+
+    // Subsequent touch movements also work
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(142).y(147))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId),
+                                     WithCoords(142, 147)));
+
+    window->assertNoEvents();
+}
+
+/**
  * One window. Stylus down on the window. Then, stylus from another device goes down. Ensure that
  * the latest stylus takes over. That is, old stylus should be canceled and the new stylus should
  * become active.
  */
 TEST_F(InputDispatcherMultiDeviceTest, LatestStylusWins) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
@@ -1756,10 +2111,59 @@
 }
 
 /**
+ * One window. Stylus down on the window. Then, stylus from another device goes down. Ensure that
+ * both stylus devices can function simultaneously.
+ */
+TEST_F(InputDispatcherMultiDeviceTest, TwoStylusDevicesActiveAtTheSameTime) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 200, 200));
+
+    mDispatcher->onWindowInfosChanged({{*window->getInfo()}, {}, 0, 0});
+
+    constexpr int32_t stylusDeviceId1 = 3;
+    constexpr int32_t stylusDeviceId2 = 5;
+
+    // Touch down on window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId1)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(99).y(100))
+                                      .build());
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId1)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(100).y(101))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(stylusDeviceId1)));
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(stylusDeviceId1)));
+
+    // Second stylus down
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId2)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(9).y(10))
+                                      .build());
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId2)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(10).y(11))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(stylusDeviceId2)));
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(stylusDeviceId2)));
+
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId1)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(101).y(102))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(stylusDeviceId1)));
+    window->assertNoEvents();
+}
+
+/**
  * One window. Touch down on the window. Then, stylus down on the window from another device.
  * Ensure that is canceled, because stylus down should be preferred over touch.
  */
 TEST_F(InputDispatcherMultiDeviceTest, TouchIsCanceledByStylusDown) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
@@ -1800,13 +2204,65 @@
 }
 
 /**
+ * One window. Touch down on the window. Then, stylus down on the window from another device.
+ * Ensure that both touch and stylus are functioning independently.
+ */
+TEST_F(InputDispatcherMultiDeviceTest, TouchIsNotCanceledByStylusDown) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 200, 200));
+
+    mDispatcher->onWindowInfosChanged({{*window->getInfo()}, {}, 0, 0});
+
+    constexpr int32_t touchDeviceId = 4;
+    constexpr int32_t stylusDeviceId = 2;
+
+    // Touch down on window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(140).y(145))
+                                      .build());
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(141).y(146))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+
+    // Stylus down on the window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(100).y(110))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(stylusDeviceId)));
+
+    // Subsequent stylus movements are delivered correctly
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(101).y(111))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(stylusDeviceId),
+                                     WithCoords(101, 111)));
+
+    // Touch continues to work too
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(148).y(149))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+}
+
+/**
  * Two windows: a window on the left and a window on the right.
  * Mouse is clicked on the left window and remains down. Touch is touched on the right and remains
  * down. Then, on the left window, also place second touch pointer down.
  * This test tries to reproduce a crash.
  * In the buggy implementation, second pointer down on the left window would cause a crash.
  */
-TEST_F(InputDispatcherMultiDeviceTest, MultiDeviceSplitTouch) {
+TEST_F(InputDispatcherMultiDeviceTest, MultiDeviceSplitTouch_legacy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> leftWindow =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Left", ADISPLAY_ID_DEFAULT);
@@ -1885,6 +2341,88 @@
 
 /**
  * Two windows: a window on the left and a window on the right.
+ * Mouse is clicked on the left window and remains down. Touch is touched on the right and remains
+ * down. Then, on the left window, also place second touch pointer down.
+ * This test tries to reproduce a crash.
+ * In the buggy implementation, second pointer down on the left window would cause a crash.
+ */
+TEST_F(InputDispatcherMultiDeviceTest, MultiDeviceSplitTouch) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> leftWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Left", ADISPLAY_ID_DEFAULT);
+    leftWindow->setFrame(Rect(0, 0, 200, 200));
+
+    sp<FakeWindowHandle> rightWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Right", ADISPLAY_ID_DEFAULT);
+    rightWindow->setFrame(Rect(200, 0, 400, 200));
+
+    mDispatcher->onWindowInfosChanged(
+            {{*leftWindow->getInfo(), *rightWindow->getInfo()}, {}, 0, 0});
+
+    const int32_t touchDeviceId = 4;
+    const int32_t mouseDeviceId = 6;
+
+    // Start hovering over the left window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_ENTER, AINPUT_SOURCE_MOUSE)
+                                      .deviceId(mouseDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::MOUSE).x(100).y(100))
+                                      .build());
+    leftWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_ENTER), WithDeviceId(mouseDeviceId)));
+
+    // Mouse down on left window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_MOUSE)
+                                      .deviceId(mouseDeviceId)
+                                      .buttonState(AMOTION_EVENT_BUTTON_PRIMARY)
+                                      .pointer(PointerBuilder(0, ToolType::MOUSE).x(100).y(100))
+                                      .build());
+
+    leftWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_EXIT), WithDeviceId(mouseDeviceId)));
+    leftWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(mouseDeviceId)));
+
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(AMOTION_EVENT_ACTION_BUTTON_PRESS, AINPUT_SOURCE_MOUSE)
+                    .deviceId(mouseDeviceId)
+                    .buttonState(AMOTION_EVENT_BUTTON_PRIMARY)
+                    .actionButton(AMOTION_EVENT_BUTTON_PRIMARY)
+                    .pointer(PointerBuilder(0, ToolType::MOUSE).x(100).y(100))
+                    .build());
+    leftWindow->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_BUTTON_PRESS));
+
+    // First touch pointer down on right window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(300).y(100))
+                                      .build());
+    leftWindow->assertNoEvents();
+
+    rightWindow->consumeMotionEvent(WithMotionAction(ACTION_DOWN));
+
+    // Second touch pointer down on left window
+    mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(300).y(100))
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(100).y(100))
+                                      .build());
+    // Since this is now a new splittable pointer going down on the left window, and it's coming
+    // from a different device, it will be split and delivered to left window separately.
+    leftWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+    // This MOVE event is not necessary (doesn't carry any new information), but it's there in the
+    // current implementation.
+    const std::map<int32_t, PointF> expectedPointers{{0, PointF{100, 100}}};
+    rightWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_MOVE), WithPointers(expectedPointers)));
+
+    leftWindow->assertNoEvents();
+    rightWindow->assertNoEvents();
+}
+
+/**
+ * Two windows: a window on the left and a window on the right.
  * Mouse is hovered on the left window and stylus is hovered on the right window.
  */
 TEST_F(InputDispatcherMultiDeviceTest, MultiDeviceHover) {
@@ -1944,7 +2482,8 @@
  * Stylus down on the left window and remains down. Touch goes down on the right and remains down.
  * Check the stream that's received by the spy.
  */
-TEST_F(InputDispatcherMultiDeviceTest, MultiDeviceWithSpy) {
+TEST_F(InputDispatcherMultiDeviceTest, MultiDeviceWithSpy_legacy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
 
     sp<FakeWindowHandle> spyWindow =
@@ -2014,6 +2553,83 @@
 }
 
 /**
+ * Three windows: a window on the left and a window on the right.
+ * And a spy window that's positioned above all of them.
+ * Stylus down on the left window and remains down. Touch goes down on the right and remains down.
+ * Check the stream that's received by the spy.
+ */
+TEST_F(InputDispatcherMultiDeviceTest, MultiDeviceWithSpy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+
+    sp<FakeWindowHandle> spyWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Spy", ADISPLAY_ID_DEFAULT);
+    spyWindow->setFrame(Rect(0, 0, 400, 400));
+    spyWindow->setTrustedOverlay(true);
+    spyWindow->setSpy(true);
+
+    sp<FakeWindowHandle> leftWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Left", ADISPLAY_ID_DEFAULT);
+    leftWindow->setFrame(Rect(0, 0, 200, 200));
+
+    sp<FakeWindowHandle> rightWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Right", ADISPLAY_ID_DEFAULT);
+
+    rightWindow->setFrame(Rect(200, 0, 400, 200));
+
+    mDispatcher->onWindowInfosChanged(
+            {{*spyWindow->getInfo(), *leftWindow->getInfo(), *rightWindow->getInfo()}, {}, 0, 0});
+
+    const int32_t stylusDeviceId = 1;
+    const int32_t touchDeviceId = 2;
+
+    // Stylus down on the left window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(100).y(100))
+                                      .build());
+    leftWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(stylusDeviceId)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(stylusDeviceId)));
+
+    // Touch down on the right window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(300).y(100))
+                                      .build());
+    leftWindow->assertNoEvents();
+    rightWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+
+    // Stylus movements continue. They should be delivered to the left window and to the spy window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(110).y(110))
+                                      .build());
+    leftWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(stylusDeviceId)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(stylusDeviceId)));
+
+    // Further touch MOVE events keep going to the right window and to the spy
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(310).y(110))
+                                      .build());
+    rightWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+
+    spyWindow->assertNoEvents();
+    leftWindow->assertNoEvents();
+    rightWindow->assertNoEvents();
+}
+
+/**
  * Three windows: a window on the left, a window on the right, and a spy window positioned above
  * both.
  * Check hover in left window and touch down in the right window.
@@ -2022,6 +2638,7 @@
  * respectively.
  */
 TEST_F(InputDispatcherMultiDeviceTest, MultiDeviceHoverBlocksTouchWithSpy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
 
     sp<FakeWindowHandle> spyWindow =
@@ -2089,6 +2706,84 @@
 }
 
 /**
+ * Three windows: a window on the left, a window on the right, and a spy window positioned above
+ * both.
+ * Check hover in left window and touch down in the right window.
+ * At first, spy should receive hover. Next, spy should receive touch.
+ * At the same time, left and right should be getting independent streams of hovering and touch,
+ * respectively.
+ */
+TEST_F(InputDispatcherMultiDeviceTest, MultiDeviceHoverDoesNotBlockTouchWithSpy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+
+    sp<FakeWindowHandle> spyWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Spy", ADISPLAY_ID_DEFAULT);
+    spyWindow->setFrame(Rect(0, 0, 400, 400));
+    spyWindow->setTrustedOverlay(true);
+    spyWindow->setSpy(true);
+
+    sp<FakeWindowHandle> leftWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Left", ADISPLAY_ID_DEFAULT);
+    leftWindow->setFrame(Rect(0, 0, 200, 200));
+
+    sp<FakeWindowHandle> rightWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Right", ADISPLAY_ID_DEFAULT);
+    rightWindow->setFrame(Rect(200, 0, 400, 200));
+
+    mDispatcher->onWindowInfosChanged(
+            {{*spyWindow->getInfo(), *leftWindow->getInfo(), *rightWindow->getInfo()}, {}, 0, 0});
+
+    const int32_t stylusDeviceId = 1;
+    const int32_t touchDeviceId = 2;
+
+    // Stylus hover on the left window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_ENTER, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(100).y(100))
+                                      .build());
+    leftWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_ENTER), WithDeviceId(stylusDeviceId)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_ENTER), WithDeviceId(stylusDeviceId)));
+
+    // Touch down on the right window.
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(300).y(100))
+                                      .build());
+    leftWindow->assertNoEvents();
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+    rightWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+
+    // Stylus movements continue. They should be delivered to the left window and the spy.
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_MOVE, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(110).y(110))
+                                      .build());
+    leftWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_MOVE), WithDeviceId(stylusDeviceId)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_MOVE), WithDeviceId(stylusDeviceId)));
+
+    // Touch movements continue. They should be delivered to the right window and the spy
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(301).y(101))
+                                      .build());
+    rightWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+
+    spyWindow->assertNoEvents();
+    leftWindow->assertNoEvents();
+    rightWindow->assertNoEvents();
+}
+
+/**
  * On a single window, use two different devices: mouse and touch.
  * Touch happens first, with two pointers going down, and then the first pointer leaving.
  * Mouse is clicked next, which causes the touch stream to be aborted with ACTION_CANCEL.
@@ -2096,7 +2791,8 @@
  * because the mouse is currently down, and a POINTER_DOWN event from the touchscreen does not
  * represent a new gesture.
  */
-TEST_F(InputDispatcherMultiDeviceTest, MixedTouchAndMouseWithPointerDown) {
+TEST_F(InputDispatcherMultiDeviceTest, MixedTouchAndMouseWithPointerDown_legacy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
@@ -2169,10 +2865,89 @@
 }
 
 /**
+ * On a single window, use two different devices: mouse and touch.
+ * Touch happens first, with two pointers going down, and then the first pointer leaving.
+ * Mouse is clicked next, which should not interfere with the touch stream.
+ * Finally, a second touch pointer goes down again. Ensure the second touch pointer is also
+ * delivered correctly.
+ */
+TEST_F(InputDispatcherMultiDeviceTest, MixedTouchAndMouseWithPointerDown) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 400, 400));
+
+    mDispatcher->onWindowInfosChanged({{*window->getInfo()}, {}, 0, 0});
+
+    const int32_t touchDeviceId = 4;
+    const int32_t mouseDeviceId = 6;
+
+    // First touch pointer down
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(300).y(100))
+                                      .build());
+    // Second touch pointer down
+    mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(300).y(100))
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(350).y(100))
+                                      .build());
+    // First touch pointer lifts. The second one remains down
+    mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_0_UP, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(300).y(100))
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(350).y(100))
+                                      .build());
+    window->consumeMotionEvent(WithMotionAction(ACTION_DOWN));
+    window->consumeMotionEvent(WithMotionAction(POINTER_1_DOWN));
+    window->consumeMotionEvent(WithMotionAction(POINTER_0_UP));
+
+    // Mouse down
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_MOUSE)
+                                      .deviceId(mouseDeviceId)
+                                      .buttonState(AMOTION_EVENT_BUTTON_PRIMARY)
+                                      .pointer(PointerBuilder(0, ToolType::MOUSE).x(320).y(100))
+                                      .build());
+
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(mouseDeviceId)));
+
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(AMOTION_EVENT_ACTION_BUTTON_PRESS, AINPUT_SOURCE_MOUSE)
+                    .deviceId(mouseDeviceId)
+                    .buttonState(AMOTION_EVENT_BUTTON_PRIMARY)
+                    .actionButton(AMOTION_EVENT_BUTTON_PRIMARY)
+                    .pointer(PointerBuilder(0, ToolType::MOUSE).x(320).y(100))
+                    .build());
+    window->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_BUTTON_PRESS));
+
+    // Second touch pointer down.
+    mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_0_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(300).y(100))
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(350).y(100))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(POINTER_0_DOWN), WithDeviceId(touchDeviceId),
+                                     WithPointerCount(2u)));
+
+    // Mouse movements should continue to work
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_MOUSE)
+                                      .deviceId(mouseDeviceId)
+                                      .buttonState(AMOTION_EVENT_BUTTON_PRIMARY)
+                                      .pointer(PointerBuilder(0, ToolType::MOUSE).x(330).y(110))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(mouseDeviceId)));
+
+    window->assertNoEvents();
+}
+
+/**
  * Inject a touch down and then send a new event via 'notifyMotion'. Ensure the new event cancels
  * the injected event.
  */
-TEST_F(InputDispatcherMultiDeviceTest, UnfinishedInjectedEvent) {
+TEST_F(InputDispatcherMultiDeviceTest, UnfinishedInjectedEvent_legacy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
@@ -2205,6 +2980,40 @@
 }
 
 /**
+ * Inject a touch down and then send a new event via 'notifyMotion'. Ensure the new event runs
+ * parallel to the injected event.
+ */
+TEST_F(InputDispatcherMultiDeviceTest, UnfinishedInjectedEvent) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 400, 400));
+
+    mDispatcher->onWindowInfosChanged({{*window->getInfo()}, {}, 0, 0});
+
+    const int32_t touchDeviceId = 4;
+    // Pretend a test injects an ACTION_DOWN mouse event, but forgets to lift up the touch after
+    // completion.
+    ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
+              injectMotionEvent(*mDispatcher,
+                                MotionEventBuilder(ACTION_DOWN, AINPUT_SOURCE_MOUSE)
+                                        .deviceId(ReservedInputDeviceId::VIRTUAL_KEYBOARD_ID)
+                                        .pointer(PointerBuilder(0, ToolType::MOUSE).x(50).y(50))
+                                        .build()));
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(VIRTUAL_KEYBOARD_ID)));
+
+    // Now a real touch comes. The injected pointer will remain, and the new gesture will also be
+    // allowed through.
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(300).y(100))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+}
+
+/**
  * This test is similar to the test above, but the sequence of injected events is different.
  *
  * Two windows: a window on the left and a window on the right.
@@ -2218,7 +3027,8 @@
  * This test reproduces a crash where there is a mismatch between the downTime and eventTime.
  * In the buggy implementation, second finger down on the left window would cause a crash.
  */
-TEST_F(InputDispatcherMultiDeviceTest, HoverTapAndSplitTouch) {
+TEST_F(InputDispatcherMultiDeviceTest, HoverTapAndSplitTouch_legacy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> leftWindow =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Left", ADISPLAY_ID_DEFAULT);
@@ -2290,11 +3100,88 @@
 }
 
 /**
+ * This test is similar to the test above, but the sequence of injected events is different.
+ *
+ * Two windows: a window on the left and a window on the right.
+ * Mouse is hovered over the left window.
+ * Next, we tap on the left window, where the cursor was last seen.
+ *
+ * After that, we send one finger down onto the right window, and then a second finger down onto
+ * the left window.
+ * The touch is split, so this last gesture should cause 2 ACTION_DOWN events, one in the right
+ * window (first), and then another on the left window (second).
+ * This test reproduces a crash where there is a mismatch between the downTime and eventTime.
+ * In the buggy implementation, second finger down on the left window would cause a crash.
+ */
+TEST_F(InputDispatcherMultiDeviceTest, HoverTapAndSplitTouch) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> leftWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Left", ADISPLAY_ID_DEFAULT);
+    leftWindow->setFrame(Rect(0, 0, 200, 200));
+
+    sp<FakeWindowHandle> rightWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Right", ADISPLAY_ID_DEFAULT);
+    rightWindow->setFrame(Rect(200, 0, 400, 200));
+
+    mDispatcher->onWindowInfosChanged(
+            {{*leftWindow->getInfo(), *rightWindow->getInfo()}, {}, 0, 0});
+
+    const int32_t mouseDeviceId = 6;
+    const int32_t touchDeviceId = 4;
+    // Hover over the left window. Keep the cursor there.
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(AMOTION_EVENT_ACTION_HOVER_ENTER, AINPUT_SOURCE_MOUSE)
+                    .deviceId(mouseDeviceId)
+                    .pointer(PointerBuilder(0, ToolType::MOUSE).x(50).y(50))
+                    .build());
+    leftWindow->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_HOVER_ENTER));
+
+    // Tap on left window
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(AMOTION_EVENT_ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                    .deviceId(touchDeviceId)
+                    .pointer(PointerBuilder(0, ToolType::FINGER).x(100).y(100))
+                    .build());
+
+    mDispatcher->notifyMotion(MotionArgsBuilder(AMOTION_EVENT_ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(100).y(100))
+                                      .build());
+    leftWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(AMOTION_EVENT_ACTION_DOWN), WithDeviceId(touchDeviceId)));
+    leftWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(AMOTION_EVENT_ACTION_UP), WithDeviceId(touchDeviceId)));
+
+    // First finger down on right window
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(AMOTION_EVENT_ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                    .deviceId(touchDeviceId)
+                    .pointer(PointerBuilder(0, ToolType::FINGER).x(300).y(100))
+                    .build());
+    rightWindow->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_DOWN));
+
+    // Second finger down on the left window
+    mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(300).y(100))
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(100).y(100))
+                                      .build());
+    leftWindow->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_DOWN));
+    rightWindow->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_MOVE));
+
+    // No more events
+    leftWindow->assertNoEvents();
+    rightWindow->assertNoEvents();
+}
+
+/**
  * Start hovering with a stylus device, and then tap with a touch device. Ensure no crash occurs.
  * While the touch is down, new hover events from the stylus device should be ignored. After the
  * touch is gone, stylus hovering should start working again.
  */
 TEST_F(InputDispatcherMultiDeviceTest, StylusHoverIgnoresTouchTap) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
@@ -2356,6 +3243,61 @@
 }
 
 /**
+ * Start hovering with a stylus device, and then tap with a touch device. Ensure no crash occurs.
+ * While the touch is down, hovering from the stylus is not affected. After the touch is gone,
+ * check that the stylus hovering continues to work.
+ */
+TEST_F(InputDispatcherMultiDeviceTest, StylusHoverWithTouchTap) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 200, 200));
+
+    mDispatcher->onWindowInfosChanged({{*window->getInfo()}, {}, 0, 0});
+
+    const int32_t stylusDeviceId = 5;
+    const int32_t touchDeviceId = 4;
+    // Start hovering with stylus
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_ENTER, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(50).y(50))
+                                      .build());
+    window->consumeMotionEvent(WithMotionAction(ACTION_HOVER_ENTER));
+
+    // Finger down on the window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(100).y(100))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+
+    // Continue hovering with stylus.
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_MOVE, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(60).y(60))
+                                      .build());
+    // Hovers continue to work
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_MOVE), WithDeviceId(stylusDeviceId)));
+
+    // Lift up the finger
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(100).y(100))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_UP), WithDeviceId(touchDeviceId)));
+
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_MOVE, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(70).y(70))
+                                      .build());
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_MOVE), WithDeviceId(stylusDeviceId)));
+    window->assertNoEvents();
+}
+
+/**
  * If stylus is down anywhere on the screen, then touches should not be delivered to windows that
  * have InputConfig::GLOBAL_STYLUS_BLOCKS_TOUCH.
  *
@@ -2601,7 +3543,8 @@
  * ACTION_DOWN event because that's a new gesture, and pilfering should no longer be active.
  * While the mouse is down, new move events from the touch device should be ignored.
  */
-TEST_F(InputDispatcherTest, TouchPilferAndMouseMove) {
+TEST_F(InputDispatcherTest, TouchPilferAndMouseMove_legacy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> spyWindow =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Spy", ADISPLAY_ID_DEFAULT);
@@ -2698,6 +3641,114 @@
 }
 
 /**
+ * Start hovering with a mouse, and then tap with a touch device. Pilfer the touch stream.
+ * Next, click with the mouse device. Both windows (spy and regular) should receive the new mouse
+ * ACTION_DOWN event because that's a new gesture, and pilfering should no longer be active.
+ * While the mouse is down, new move events from the touch device should continue to work.
+ */
+TEST_F(InputDispatcherTest, TouchPilferAndMouseMove) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> spyWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Spy", ADISPLAY_ID_DEFAULT);
+    spyWindow->setFrame(Rect(0, 0, 200, 200));
+    spyWindow->setTrustedOverlay(true);
+    spyWindow->setSpy(true);
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 200, 200));
+
+    mDispatcher->onWindowInfosChanged({{*spyWindow->getInfo(), *window->getInfo()}, {}, 0, 0});
+
+    const int32_t mouseDeviceId = 7;
+    const int32_t touchDeviceId = 4;
+
+    // Hover a bit with mouse first
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_ENTER, AINPUT_SOURCE_MOUSE)
+                                      .deviceId(mouseDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::MOUSE).x(100).y(100))
+                                      .build());
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_ENTER), WithDeviceId(mouseDeviceId)));
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_ENTER), WithDeviceId(mouseDeviceId)));
+
+    // Start touching
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+                                      .build());
+
+    spyWindow->consumeMotionEvent(WithMotionAction(ACTION_DOWN));
+    window->consumeMotionEvent(WithMotionAction(ACTION_DOWN));
+
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(55).y(55))
+                                      .build());
+    spyWindow->consumeMotionEvent(WithMotionAction(ACTION_MOVE));
+    window->consumeMotionEvent(WithMotionAction(ACTION_MOVE));
+
+    // Pilfer the stream
+    EXPECT_EQ(OK, mDispatcher->pilferPointers(spyWindow->getToken()));
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_CANCEL), WithDeviceId(touchDeviceId)));
+    // Hover is not pilfered! Only touch.
+
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(60).y(60))
+                                      .build());
+    spyWindow->consumeMotionEvent(WithMotionAction(ACTION_MOVE));
+
+    // Mouse down
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_MOUSE)
+                                      .deviceId(mouseDeviceId)
+                                      .buttonState(AMOTION_EVENT_BUTTON_PRIMARY)
+                                      .pointer(PointerBuilder(0, ToolType::MOUSE).x(100).y(100))
+                                      .build());
+
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_EXIT), WithDeviceId(mouseDeviceId)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(mouseDeviceId)));
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_EXIT), WithDeviceId(mouseDeviceId)));
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(mouseDeviceId)));
+
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(AMOTION_EVENT_ACTION_BUTTON_PRESS, AINPUT_SOURCE_MOUSE)
+                    .deviceId(mouseDeviceId)
+                    .buttonState(AMOTION_EVENT_BUTTON_PRIMARY)
+                    .actionButton(AMOTION_EVENT_BUTTON_PRIMARY)
+                    .pointer(PointerBuilder(0, ToolType::MOUSE).x(100).y(100))
+                    .build());
+    spyWindow->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_BUTTON_PRESS));
+    window->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_BUTTON_PRESS));
+
+    // Mouse move!
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_MOUSE)
+                                      .deviceId(mouseDeviceId)
+                                      .buttonState(AMOTION_EVENT_BUTTON_PRIMARY)
+                                      .pointer(PointerBuilder(0, ToolType::MOUSE).x(110).y(110))
+                                      .build());
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(mouseDeviceId)));
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(mouseDeviceId)));
+
+    // Touch move!
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(65).y(65))
+                                      .build());
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+
+    // No more events
+    spyWindow->assertNoEvents();
+    window->assertNoEvents();
+}
+
+/**
  * On the display, have a single window, and also an area where there's no window.
  * First pointer touches the "no window" area of the screen. Second pointer touches the window.
  * Make sure that the window receives the second pointer, and first pointer is simply ignored.
@@ -2910,7 +3961,8 @@
  * The clicking of mouse is a new ACTION_DOWN event. Since it's from a different device, the
  * currently active gesture should be canceled, and the new one should proceed.
  */
-TEST_F(InputDispatcherTest, TwoPointersDownMouseClick) {
+TEST_F(InputDispatcherTest, TwoPointersDownMouseClick_legacy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
@@ -2964,6 +4016,65 @@
     window->assertNoEvents();
 }
 
+/**
+ * Put two fingers down (and don't release them) and click the mouse button.
+ * The clicking of mouse is a new ACTION_DOWN event. Since it's from a different device, the
+ * currently active gesture should not be canceled, and the new one should proceed in parallel.
+ */
+TEST_F(InputDispatcherTest, TwoPointersDownMouseClick) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 600, 800));
+
+    mDispatcher->onWindowInfosChanged({{*window->getInfo()}, {}, 0, 0});
+
+    const int32_t touchDeviceId = 4;
+    const int32_t mouseDeviceId = 6;
+
+    // Two pointers down
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(100).y(100))
+                                      .build());
+
+    mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(100).y(100))
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(120).y(120))
+                                      .build());
+    window->consumeMotionEvent(WithMotionAction(ACTION_DOWN));
+    window->consumeMotionEvent(WithMotionAction(POINTER_1_DOWN));
+
+    // Send a series of mouse events for a mouse click
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_MOUSE)
+                                      .deviceId(mouseDeviceId)
+                                      .buttonState(AMOTION_EVENT_BUTTON_PRIMARY)
+                                      .pointer(PointerBuilder(0, ToolType::MOUSE).x(300).y(400))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(mouseDeviceId)));
+
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(AMOTION_EVENT_ACTION_BUTTON_PRESS, AINPUT_SOURCE_MOUSE)
+                    .deviceId(mouseDeviceId)
+                    .buttonState(AMOTION_EVENT_BUTTON_PRIMARY)
+                    .actionButton(AMOTION_EVENT_BUTTON_PRIMARY)
+                    .pointer(PointerBuilder(0, ToolType::MOUSE).x(300).y(400))
+                    .build());
+    window->consumeMotionEvent(WithMotionAction(AMOTION_EVENT_ACTION_BUTTON_PRESS));
+
+    // Try to send more touch events while the mouse is down. Since it's a continuation of an
+    // already active gesture, it should be sent normally.
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(101).y(101))
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(121).y(121))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+    window->assertNoEvents();
+}
+
 TEST_F(InputDispatcherTest, HoverWithSpyWindows) {
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
 
@@ -2996,7 +4107,8 @@
     spyWindow->assertNoEvents();
 }
 
-TEST_F(InputDispatcherTest, MouseAndTouchWithSpyWindows) {
+TEST_F(InputDispatcherTest, MouseAndTouchWithSpyWindows_legacy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
 
     sp<FakeWindowHandle> spyWindow =
@@ -3102,6 +4214,102 @@
     spyWindow->assertNoEvents();
 }
 
+TEST_F(InputDispatcherTest, MouseAndTouchWithSpyWindows) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+
+    sp<FakeWindowHandle> spyWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Spy", ADISPLAY_ID_DEFAULT);
+    spyWindow->setFrame(Rect(0, 0, 600, 800));
+    spyWindow->setTrustedOverlay(true);
+    spyWindow->setSpy(true);
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 600, 800));
+
+    mDispatcher->setFocusedApplication(ADISPLAY_ID_DEFAULT, application);
+    mDispatcher->onWindowInfosChanged({{*spyWindow->getInfo(), *window->getInfo()}, {}, 0, 0});
+
+    // Send mouse cursor to the window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_ENTER, AINPUT_SOURCE_MOUSE)
+                                      .pointer(PointerBuilder(0, ToolType::MOUSE).x(100).y(100))
+                                      .build());
+
+    // Move mouse cursor
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_MOVE, AINPUT_SOURCE_MOUSE)
+                                      .pointer(PointerBuilder(0, ToolType::MOUSE).x(110).y(110))
+                                      .build());
+
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_ENTER), WithSource(AINPUT_SOURCE_MOUSE)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_ENTER), WithSource(AINPUT_SOURCE_MOUSE)));
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_MOVE), WithSource(AINPUT_SOURCE_MOUSE)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_MOVE), WithSource(AINPUT_SOURCE_MOUSE)));
+    // Touch down on the window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(SECOND_DEVICE_ID)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(200).y(200))
+                                      .build());
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithSource(AINPUT_SOURCE_TOUCHSCREEN)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithSource(AINPUT_SOURCE_TOUCHSCREEN)));
+
+    // pilfer the motion, retaining the gesture on the spy window.
+    EXPECT_EQ(OK, mDispatcher->pilferPointers(spyWindow->getToken()));
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_CANCEL), WithSource(AINPUT_SOURCE_TOUCHSCREEN)));
+    // Mouse hover is not pilfered
+
+    // Touch UP on the window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(SECOND_DEVICE_ID)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(200).y(200))
+                                      .build());
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_UP), WithSource(AINPUT_SOURCE_TOUCHSCREEN)));
+
+    // Previously, a touch was pilfered. However, that gesture was just finished. Now, we are going
+    // to send a new gesture. It should again go to both windows (spy and the window below), just
+    // like the first gesture did, before pilfering. The window configuration has not changed.
+
+    // One more tap - DOWN
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(SECOND_DEVICE_ID)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(250).y(250))
+                                      .build());
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithSource(AINPUT_SOURCE_TOUCHSCREEN)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithSource(AINPUT_SOURCE_TOUCHSCREEN)));
+
+    // Touch UP on the window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(SECOND_DEVICE_ID)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(250).y(250))
+                                      .build());
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_UP), WithSource(AINPUT_SOURCE_TOUCHSCREEN)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_UP), WithSource(AINPUT_SOURCE_TOUCHSCREEN)));
+
+    // Mouse movement continues normally as well
+    // Move mouse cursor
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_MOVE, AINPUT_SOURCE_MOUSE)
+                                      .pointer(PointerBuilder(0, ToolType::MOUSE).x(120).y(130))
+                                      .build());
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_MOVE), WithSource(AINPUT_SOURCE_MOUSE)));
+    spyWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_MOVE), WithSource(AINPUT_SOURCE_MOUSE)));
+
+    window->assertNoEvents();
+    spyWindow->assertNoEvents();
+}
+
 // This test is different from the test above that HOVER_ENTER and HOVER_EXIT events are injected
 // directly in this test.
 TEST_F(InputDispatcherTest, HoverEnterMouseClickAndHoverExit) {
@@ -3227,7 +4435,8 @@
 /**
  * If mouse is hovering when the touch goes down, the hovering should be stopped via HOVER_EXIT.
  */
-TEST_F(InputDispatcherTest, TouchDownAfterMouseHover) {
+TEST_F(InputDispatcherTest, TouchDownAfterMouseHover_legacy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
@@ -3258,11 +4467,43 @@
 }
 
 /**
+ * If mouse is hovering when the touch goes down, the hovering should not be stopped.
+ */
+TEST_F(InputDispatcherTest, TouchDownAfterMouseHover) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 100, 100));
+
+    mDispatcher->onWindowInfosChanged({{*window->getInfo()}, {}, 0, 0});
+
+    const int32_t mouseDeviceId = 7;
+    const int32_t touchDeviceId = 4;
+
+    // Start hovering with the mouse
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_ENTER, AINPUT_SOURCE_MOUSE)
+                                      .deviceId(mouseDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::MOUSE).x(10).y(10))
+                                      .build());
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_HOVER_ENTER), WithDeviceId(mouseDeviceId)));
+
+    // Touch goes down
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .deviceId(touchDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+                                      .build());
+    window->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+}
+
+/**
  * Inject a mouse hover event followed by a tap from touchscreen.
  * The tap causes a HOVER_EXIT event to be generated because the current event
  * stream's source has been switched.
  */
-TEST_F(InputDispatcherTest, MouseHoverAndTouchTap) {
+TEST_F(InputDispatcherTest, MouseHoverAndTouchTap_legacy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window =
             sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
@@ -3296,6 +4537,45 @@
                                              WithSource(AINPUT_SOURCE_TOUCHSCREEN))));
 }
 
+/**
+ * Send a mouse hover event followed by a tap from touchscreen.
+ * The tap causes a HOVER_EXIT event to be generated because the current event
+ * stream's source has been switched.
+ */
+TEST_F(InputDispatcherTest, MouseHoverAndTouchTap) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 100, 100));
+
+    mDispatcher->onWindowInfosChanged({{*window->getInfo()}, {}, 0, 0});
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_HOVER_MOVE, AINPUT_SOURCE_MOUSE)
+                                      .pointer(PointerBuilder(0, ToolType::MOUSE).x(50).y(50))
+                                      .build());
+
+    window->consumeMotionEvent(AllOf(WithMotionAction(AMOTION_EVENT_ACTION_HOVER_ENTER),
+                                     WithSource(AINPUT_SOURCE_MOUSE)));
+
+    // Tap on the window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(10).y(10))
+                                      .build());
+
+    window->consumeMotionEvent(AllOf(WithMotionAction(AMOTION_EVENT_ACTION_HOVER_EXIT),
+                                     WithSource(AINPUT_SOURCE_MOUSE)));
+
+    window->consumeMotionEvent(AllOf(WithMotionAction(AMOTION_EVENT_ACTION_DOWN),
+                                     WithSource(AINPUT_SOURCE_TOUCHSCREEN)));
+
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(10).y(10))
+                                      .build());
+
+    window->consumeMotionEvent(AllOf(WithMotionAction(AMOTION_EVENT_ACTION_UP),
+                                     WithSource(AINPUT_SOURCE_TOUCHSCREEN)));
+}
+
 TEST_F(InputDispatcherTest, HoverEnterMoveRemoveWindowsInSecondDisplay) {
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> windowDefaultDisplay =
@@ -10901,7 +12181,8 @@
  * Pilfer from spy window.
  * Check that the pilfering only affects the pointers that are actually being received by the spy.
  */
-TEST_F(InputDispatcherPilferPointersTest, MultiDevicePilfer) {
+TEST_F(InputDispatcherPilferPointersTest, MultiDevicePilfer_legacy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     sp<FakeWindowHandle> spy = createSpy();
     spy->setFrame(Rect(0, 0, 200, 200));
     sp<FakeWindowHandle> leftWindow = createForeground();
@@ -10959,6 +12240,83 @@
     rightWindow->assertNoEvents();
 }
 
+/**
+ * A window on the left and a window on the right. Also, a spy window that's above all of the
+ * windows, and spanning both left and right windows.
+ * Send simultaneous motion streams from two different devices, one to the left window, and another
+ * to the right window.
+ * Pilfer from spy window.
+ * Check that the pilfering affects all of the pointers that are actually being received by the spy.
+ * The spy should receive both the touch and the stylus events after pilfer.
+ */
+TEST_F(InputDispatcherPilferPointersTest, MultiDevicePilfer) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    sp<FakeWindowHandle> spy = createSpy();
+    spy->setFrame(Rect(0, 0, 200, 200));
+    sp<FakeWindowHandle> leftWindow = createForeground();
+    leftWindow->setFrame(Rect(0, 0, 100, 100));
+
+    sp<FakeWindowHandle> rightWindow = createForeground();
+    rightWindow->setFrame(Rect(100, 0, 200, 100));
+
+    constexpr int32_t stylusDeviceId = 1;
+    constexpr int32_t touchDeviceId = 2;
+
+    mDispatcher->onWindowInfosChanged(
+            {{*spy->getInfo(), *leftWindow->getInfo(), *rightWindow->getInfo()}, {}, 0, 0});
+
+    // Stylus down on left window and spy
+    mDispatcher->notifyMotion(MotionArgsBuilder(AMOTION_EVENT_ACTION_DOWN, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(50).y(50))
+                                      .build());
+    leftWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(stylusDeviceId)));
+    spy->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(stylusDeviceId)));
+
+    // Finger down on right window and spy
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(AMOTION_EVENT_ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                    .deviceId(touchDeviceId)
+                    .pointer(PointerBuilder(0, ToolType::FINGER).x(150).y(50))
+                    .build());
+    rightWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+    spy->consumeMotionEvent(AllOf(WithMotionAction(ACTION_DOWN), WithDeviceId(touchDeviceId)));
+
+    // Act: pilfer from spy. Spy is currently receiving touch events.
+    EXPECT_EQ(OK, mDispatcher->pilferPointers(spy->getToken()));
+    leftWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_CANCEL), WithDeviceId(stylusDeviceId)));
+    rightWindow->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_CANCEL), WithDeviceId(touchDeviceId)));
+
+    // Continue movements from both stylus and touch. Touch and stylus will be delivered to spy
+    // Instead of sending the two MOVE events for each input device together, and then receiving
+    // them both, process them one at at time. InputConsumer is always in the batching mode, which
+    // means that the two MOVE events will be initially put into a batch. Once the events are
+    // batched, the 'consume' call may result in any of the MOVE events to be sent first (depending
+    // on the implementation of InputConsumer), which would mean that the order of the received
+    // events could be different depending on whether there are 1 or 2 events pending in the
+    // InputChannel at the time the test calls 'consume'. To make assertions simpler here, and to
+    // avoid this confusing behaviour, send and receive each MOVE event separately.
+    mDispatcher->notifyMotion(MotionArgsBuilder(AMOTION_EVENT_ACTION_MOVE, AINPUT_SOURCE_STYLUS)
+                                      .deviceId(stylusDeviceId)
+                                      .pointer(PointerBuilder(0, ToolType::STYLUS).x(51).y(52))
+                                      .build());
+    spy->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(stylusDeviceId)));
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(AMOTION_EVENT_ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                    .deviceId(touchDeviceId)
+                    .pointer(PointerBuilder(0, ToolType::FINGER).x(151).y(52))
+                    .build());
+    spy->consumeMotionEvent(AllOf(WithMotionAction(ACTION_MOVE), WithDeviceId(touchDeviceId)));
+
+    spy->assertNoEvents();
+    leftWindow->assertNoEvents();
+    rightWindow->assertNoEvents();
+}
+
 TEST_F(InputDispatcherPilferPointersTest, NoPilferingWithHoveringPointers) {
     auto window = createForeground();
     auto spy = createSpy();
@@ -11423,7 +12781,8 @@
                                                 /*pointerId=*/0));
 }
 
-TEST_F(InputDispatcherPointerInWindowTest, MultipleDevicesControllingOneMouse) {
+TEST_F(InputDispatcherPointerInWindowTest, MultipleDevicesControllingOneMouse_legacy) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
 
     sp<FakeWindowHandle> left = sp<FakeWindowHandle>::make(application, mDispatcher, "Left Window",
@@ -11493,4 +12852,76 @@
                                                 /*pointerId=*/0));
 }
 
+/**
+ * TODO(b/313689709) - correctly support multiple mouse devices, because they should be controlling
+ * the same cursor, and therefore have a shared motion event stream.
+ */
+TEST_F(InputDispatcherPointerInWindowTest, MultipleDevicesControllingOneMouse) {
+    SCOPED_FLAG_OVERRIDE(enable_multi_device_same_window_stream, true);
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+
+    sp<FakeWindowHandle> left = sp<FakeWindowHandle>::make(application, mDispatcher, "Left Window",
+                                                           ADISPLAY_ID_DEFAULT);
+    left->setFrame(Rect(0, 0, 100, 100));
+    sp<FakeWindowHandle> right = sp<FakeWindowHandle>::make(application, mDispatcher,
+                                                            "Right Window", ADISPLAY_ID_DEFAULT);
+    right->setFrame(Rect(100, 0, 200, 100));
+
+    mDispatcher->onWindowInfosChanged({{*left->getInfo(), *right->getInfo()}, {}, 0, 0});
+
+    ASSERT_FALSE(mDispatcher->isPointerInWindow(left->getToken(), ADISPLAY_ID_DEFAULT, DEVICE_ID,
+                                                /*pointerId=*/0));
+    ASSERT_FALSE(mDispatcher->isPointerInWindow(right->getToken(), ADISPLAY_ID_DEFAULT, DEVICE_ID,
+                                                /*pointerId=*/0));
+
+    // Hover move into the window.
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(ACTION_HOVER_MOVE, AINPUT_SOURCE_MOUSE)
+                    .pointer(PointerBuilder(/*id=*/0, ToolType::MOUSE).x(50).y(50))
+                    .rawXCursorPosition(50)
+                    .rawYCursorPosition(50)
+                    .deviceId(DEVICE_ID)
+                    .build());
+
+    left->consumeMotionEvent(WithMotionAction(ACTION_HOVER_ENTER));
+
+    ASSERT_TRUE(mDispatcher->isPointerInWindow(left->getToken(), ADISPLAY_ID_DEFAULT, DEVICE_ID,
+                                               /*pointerId=*/0));
+
+    // Move the mouse with another device
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(ACTION_HOVER_MOVE, AINPUT_SOURCE_MOUSE)
+                    .pointer(PointerBuilder(/*id=*/0, ToolType::MOUSE).x(51).y(50))
+                    .rawXCursorPosition(51)
+                    .rawYCursorPosition(50)
+                    .deviceId(SECOND_DEVICE_ID)
+                    .build());
+    left->consumeMotionEvent(WithMotionAction(ACTION_HOVER_ENTER));
+
+    // TODO(b/313689709): InputDispatcher's touch state is not updated, even though the window gets
+    // a HOVER_EXIT from the first device.
+    ASSERT_TRUE(mDispatcher->isPointerInWindow(left->getToken(), ADISPLAY_ID_DEFAULT, DEVICE_ID,
+                                               /*pointerId=*/0));
+    ASSERT_TRUE(mDispatcher->isPointerInWindow(left->getToken(), ADISPLAY_ID_DEFAULT,
+                                               SECOND_DEVICE_ID,
+                                               /*pointerId=*/0));
+
+    // Move the mouse outside the window. Document the current behavior, where the window does not
+    // receive HOVER_EXIT even though the mouse left the window.
+    mDispatcher->notifyMotion(
+            MotionArgsBuilder(ACTION_HOVER_MOVE, AINPUT_SOURCE_MOUSE)
+                    .pointer(PointerBuilder(/*id=*/0, ToolType::MOUSE).x(150).y(50))
+                    .rawXCursorPosition(150)
+                    .rawYCursorPosition(50)
+                    .deviceId(SECOND_DEVICE_ID)
+                    .build());
+
+    right->consumeMotionEvent(WithMotionAction(ACTION_HOVER_ENTER));
+    ASSERT_TRUE(mDispatcher->isPointerInWindow(left->getToken(), ADISPLAY_ID_DEFAULT, DEVICE_ID,
+                                               /*pointerId=*/0));
+    ASSERT_FALSE(mDispatcher->isPointerInWindow(left->getToken(), ADISPLAY_ID_DEFAULT,
+                                                SECOND_DEVICE_ID,
+                                                /*pointerId=*/0));
+}
+
 } // namespace android::inputdispatcher
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/CachedSet.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/CachedSet.h
index e2d17ee..86bcf20 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/CachedSet.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/CachedSet.h
@@ -143,7 +143,7 @@
 
     compositionengine::OutputLayer* getBlurLayer() const;
 
-    bool hasUnsupportedDataspace() const;
+    bool hasKnownColorShift() const;
 
     bool hasProtectedLayers() const;
 
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/LayerState.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/LayerState.h
index dc3821c..5e3e3d8 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/LayerState.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/LayerState.h
@@ -74,6 +74,7 @@
     BlurRegions           = 1u << 18,
     HasProtectedContent   = 1u << 19,
     CachingHint           = 1u << 20,
+    DimmingEnabled        = 1u << 21,
 };
 // clang-format on
 
@@ -248,6 +249,10 @@
 
     ui::Dataspace getDataspace() const { return mOutputDataspace.get(); }
 
+    hardware::graphics::composer::hal::PixelFormat getPixelFormat() const {
+        return mPixelFormat.get();
+    }
+
     float getHdrSdrRatio() const {
         return getOutputLayer()->getLayerFE().getCompositionState()->currentHdrSdrRatio;
     };
@@ -258,6 +263,8 @@
 
     gui::CachingHint getCachingHint() const { return mCachingHint.get(); }
 
+    bool isDimmingEnabled() const { return mIsDimmingEnabled.get(); }
+
     float getFps() const { return getOutputLayer()->getLayerFE().getCompositionState()->fps; }
 
     void dump(std::string& result) const;
@@ -498,7 +505,10 @@
                              return std::vector<std::string>{toString(cachingHint)};
                          }};
 
-    static const constexpr size_t kNumNonUniqueFields = 19;
+    OutputLayerState<bool, LayerStateField::DimmingEnabled> mIsDimmingEnabled{
+            [](auto layer) { return layer->getLayerFE().getCompositionState()->dimmingEnabled; }};
+
+    static const constexpr size_t kNumNonUniqueFields = 20;
 
     std::array<StateInterface*, kNumNonUniqueFields> getNonUniqueFields() {
         std::array<const StateInterface*, kNumNonUniqueFields> constFields =
@@ -516,7 +526,7 @@
                 &mAlpha,        &mLayerMetadata,  &mVisibleRegion,        &mOutputDataspace,
                 &mPixelFormat,  &mColorTransform, &mCompositionType,      &mSidebandStream,
                 &mBuffer,       &mSolidColor,     &mBackgroundBlurRadius, &mBlurRegions,
-                &mFrameNumber,  &mIsProtected,    &mCachingHint};
+                &mFrameNumber,  &mIsProtected,    &mCachingHint,          &mIsDimmingEnabled};
     }
 };
 
diff --git a/services/surfaceflinger/CompositionEngine/src/planner/CachedSet.cpp b/services/surfaceflinger/CompositionEngine/src/planner/CachedSet.cpp
index 1f53588..ea9442d 100644
--- a/services/surfaceflinger/CompositionEngine/src/planner/CachedSet.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/planner/CachedSet.cpp
@@ -27,8 +27,7 @@
 #include <renderengine/DisplaySettings.h>
 #include <renderengine/RenderEngine.h>
 #include <ui/DebugUtils.h>
-#include <utils/Trace.h>
-
+#include <ui/HdrRenderTypeUtils.h>
 #include <utils/Trace.h>
 
 namespace android::compositionengine::impl::planner {
@@ -306,7 +305,7 @@
         return false;
     }
 
-    if (hasUnsupportedDataspace()) {
+    if (hasKnownColorShift()) {
         return false;
     }
 
@@ -366,12 +365,21 @@
     return mBlurLayer ? mBlurLayer->getOutputLayer() : nullptr;
 }
 
-bool CachedSet::hasUnsupportedDataspace() const {
+bool CachedSet::hasKnownColorShift() const {
     return std::any_of(mLayers.cbegin(), mLayers.cend(), [](const Layer& layer) {
         auto dataspace = layer.getState()->getDataspace();
-        const auto transfer = static_cast<ui::Dataspace>(dataspace & ui::Dataspace::TRANSFER_MASK);
-        if (transfer == ui::Dataspace::TRANSFER_ST2084 || transfer == ui::Dataspace::TRANSFER_HLG) {
-            // Skip HDR.
+
+        // Layers are never dimmed when rendering a cached set, meaning that we may ask HWC to
+        // dim a cached set. But this means that we can never cache any HDR layers so that we
+        // don't accidentally dim those layers.
+        const auto hdrType = getHdrRenderType(dataspace, layer.getState()->getPixelFormat(),
+                                              layer.getState()->getHdrSdrRatio());
+        if (hdrType != HdrRenderType::SDR) {
+            return true;
+        }
+
+        // Layers that have dimming disabled pretend that they're HDR.
+        if (!layer.getState()->isDimmingEnabled()) {
             return true;
         }
 
@@ -380,10 +388,6 @@
             // to avoid flickering/color differences.
             return true;
         }
-        // TODO(b/274804887): temp fix of overdimming issue, skip caching if hsdr/sdr ratio > 1.01f
-        if (layer.getState()->getHdrSdrRatio() > 1.01f) {
-            return true;
-        }
         return false;
     });
 }
diff --git a/services/surfaceflinger/CompositionEngine/src/planner/Flattener.cpp b/services/surfaceflinger/CompositionEngine/src/planner/Flattener.cpp
index 0a5c43a..4bafed2 100644
--- a/services/surfaceflinger/CompositionEngine/src/planner/Flattener.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/planner/Flattener.cpp
@@ -439,7 +439,7 @@
 
         if (!layerDeniedFromCaching && layerIsInactive &&
             (firstLayer || runHasFirstLayer || !layerHasBlur) &&
-            !currentSet->hasUnsupportedDataspace()) {
+            !currentSet->hasKnownColorShift()) {
             if (isPartOfRun) {
                 builder.increment();
             } else {
diff --git a/services/surfaceflinger/CompositionEngine/tests/planner/FlattenerTest.cpp b/services/surfaceflinger/CompositionEngine/tests/planner/FlattenerTest.cpp
index d2eff75..54ee0ef 100644
--- a/services/surfaceflinger/CompositionEngine/tests/planner/FlattenerTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/planner/FlattenerTest.cpp
@@ -1339,6 +1339,55 @@
     EXPECT_EQ(nullptr, overrideBuffer3);
 }
 
+TEST_F(FlattenerTest, flattenLayers_skipsLayersDisablingDimming) {
+    auto& layerState1 = mTestLayers[0]->layerState;
+    const auto& overrideBuffer1 = layerState1->getOutputLayer()->getState().overrideInfo.buffer;
+
+    auto& layerState2 = mTestLayers[1]->layerState;
+    const auto& overrideBuffer2 = layerState2->getOutputLayer()->getState().overrideInfo.buffer;
+
+    // The third layer disables dimming, which means it should not be cached
+    auto& layerState3 = mTestLayers[2]->layerState;
+    const auto& overrideBuffer3 = layerState3->getOutputLayer()->getState().overrideInfo.buffer;
+    mTestLayers[2]->layerFECompositionState.dimmingEnabled = false;
+    mTestLayers[2]->layerState->update(&mTestLayers[2]->outputLayer);
+
+    const std::vector<const LayerState*> layers = {
+            layerState1.get(),
+            layerState2.get(),
+            layerState3.get(),
+    };
+
+    initializeFlattener(layers);
+
+    mTime += 200ms;
+    initializeOverrideBuffer(layers);
+    EXPECT_EQ(getNonBufferHash(layers),
+              mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
+
+    // This will render a CachedSet.
+    EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _))
+            .WillOnce(Return(ByMove(ftl::yield<FenceResult>(Fence::NO_FENCE))));
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
+
+    // We've rendered a CachedSet, but we haven't merged it in.
+    EXPECT_EQ(nullptr, overrideBuffer1);
+    EXPECT_EQ(nullptr, overrideBuffer2);
+    EXPECT_EQ(nullptr, overrideBuffer3);
+
+    // This time we merge the CachedSet in, so we have a new hash, and we should
+    // only have two sets.
+    EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _)).Times(0);
+    initializeOverrideBuffer(layers);
+    EXPECT_NE(getNonBufferHash(layers),
+              mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
+
+    EXPECT_NE(nullptr, overrideBuffer1);
+    EXPECT_EQ(overrideBuffer1, overrideBuffer2);
+    EXPECT_EQ(nullptr, overrideBuffer3);
+}
+
 TEST_F(FlattenerTest, flattenLayers_skipsColorLayers) {
     auto& layerState1 = mTestLayers[0]->layerState;
     const auto& overrideBuffer1 = layerState1->getOutputLayer()->getState().overrideInfo.buffer;
diff --git a/services/surfaceflinger/CompositionEngine/tests/planner/LayerStateTest.cpp b/services/surfaceflinger/CompositionEngine/tests/planner/LayerStateTest.cpp
index 044917e..39fce2b 100644
--- a/services/surfaceflinger/CompositionEngine/tests/planner/LayerStateTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/planner/LayerStateTest.cpp
@@ -304,6 +304,16 @@
     EXPECT_EQ(Composition::CLIENT, mLayerState->getCompositionType());
 }
 
+TEST_F(LayerStateTest, getHdrSdrRatio) {
+    OutputLayerCompositionState outputLayerCompositionState;
+    LayerFECompositionState layerFECompositionState;
+    layerFECompositionState.currentHdrSdrRatio = 2.f;
+    setupMocksForLayer(mOutputLayer, *mLayerFE, outputLayerCompositionState,
+                       layerFECompositionState);
+    mLayerState = std::make_unique<LayerState>(&mOutputLayer);
+    EXPECT_EQ(2.f, mLayerState->getHdrSdrRatio());
+}
+
 TEST_F(LayerStateTest, updateCompositionType) {
     OutputLayerCompositionState outputLayerCompositionState;
     LayerFECompositionState layerFECompositionState;
@@ -1033,6 +1043,47 @@
     EXPECT_TRUE(otherLayerState->compare(*mLayerState));
 }
 
+TEST_F(LayerStateTest, updateDimmingEnabled) {
+    OutputLayerCompositionState outputLayerCompositionState;
+    LayerFECompositionState layerFECompositionState;
+    layerFECompositionState.dimmingEnabled = true;
+    setupMocksForLayer(mOutputLayer, *mLayerFE, outputLayerCompositionState,
+                       layerFECompositionState);
+    mLayerState = std::make_unique<LayerState>(&mOutputLayer);
+    EXPECT_TRUE(mLayerState->isDimmingEnabled());
+
+    mock::OutputLayer newOutputLayer;
+    sp<mock::LayerFE> newLayerFE = sp<mock::LayerFE>::make();
+    LayerFECompositionState layerFECompositionStateTwo;
+    layerFECompositionStateTwo.dimmingEnabled = false;
+    setupMocksForLayer(newOutputLayer, *newLayerFE, outputLayerCompositionState,
+                       layerFECompositionStateTwo);
+    ftl::Flags<LayerStateField> updates = mLayerState->update(&newOutputLayer);
+    EXPECT_EQ(ftl::Flags<LayerStateField>(LayerStateField::DimmingEnabled), updates);
+    EXPECT_FALSE(mLayerState->isDimmingEnabled());
+}
+
+TEST_F(LayerStateTest, compareDimmingEnabled) {
+    OutputLayerCompositionState outputLayerCompositionState;
+    LayerFECompositionState layerFECompositionState;
+    layerFECompositionState.dimmingEnabled = true;
+    setupMocksForLayer(mOutputLayer, *mLayerFE, outputLayerCompositionState,
+                       layerFECompositionState);
+    mLayerState = std::make_unique<LayerState>(&mOutputLayer);
+    mock::OutputLayer newOutputLayer;
+    sp<mock::LayerFE> newLayerFE = sp<mock::LayerFE>::make();
+    LayerFECompositionState layerFECompositionStateTwo;
+    layerFECompositionStateTwo.dimmingEnabled = false;
+    setupMocksForLayer(newOutputLayer, *newLayerFE, outputLayerCompositionState,
+                       layerFECompositionStateTwo);
+    auto otherLayerState = std::make_unique<LayerState>(&newOutputLayer);
+
+    verifyNonUniqueDifferingFields(*mLayerState, *otherLayerState, LayerStateField::DimmingEnabled);
+
+    EXPECT_TRUE(mLayerState->compare(*otherLayerState));
+    EXPECT_TRUE(otherLayerState->compare(*mLayerState));
+}
+
 TEST_F(LayerStateTest, dumpDoesNotCrash) {
     OutputLayerCompositionState outputLayerCompositionState;
     LayerFECompositionState layerFECompositionState;
diff --git a/services/surfaceflinger/DisplayDevice.cpp b/services/surfaceflinger/DisplayDevice.cpp
index 62f8fb1..45ab7dd 100644
--- a/services/surfaceflinger/DisplayDevice.cpp
+++ b/services/surfaceflinger/DisplayDevice.cpp
@@ -560,10 +560,8 @@
         return DesiredModeAction::InitiateRenderRateSwitch;
     }
 
-    // Set the render frame rate to the active physical refresh rate to schedule the next
-    // frame as soon as possible.
     setActiveMode(activeMode.modePtr->getId(), activeMode.modePtr->getVsyncRate(),
-                  activeMode.modePtr->getVsyncRate());
+                  activeMode.modePtr->getPeakFps());
 
     // Initiate a mode change.
     mDesiredModeOpt = std::move(desiredMode);
diff --git a/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp b/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp
index 0966fe0..7daeefe 100644
--- a/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp
+++ b/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp
@@ -1028,6 +1028,8 @@
                                        const LayerSnapshot& parentSnapshot,
                                        const LayerHierarchy::TraversalPath& path,
                                        const Args& args) {
+    using InputConfig = gui::WindowInfo::InputConfig;
+
     if (requested.windowInfoHandle) {
         snapshot.inputInfo = *requested.windowInfoHandle->getInfo();
     } else {
@@ -1056,6 +1058,11 @@
         snapshot.dropInputMode = gui::DropInputMode::NONE;
     }
 
+    if (snapshot.isSecure ||
+        parentSnapshot.inputInfo.inputConfig.test(InputConfig::SENSITIVE_FOR_TRACING)) {
+        snapshot.inputInfo.inputConfig |= InputConfig::SENSITIVE_FOR_TRACING;
+    }
+
     updateVisibility(snapshot, snapshot.isVisible);
     if (!needsInputInfo(snapshot, requested)) {
         return;
@@ -1068,14 +1075,14 @@
     auto displayInfo = displayInfoOpt.value_or(sDefaultInfo);
 
     if (!requested.windowInfoHandle) {
-        snapshot.inputInfo.inputConfig = gui::WindowInfo::InputConfig::NO_INPUT_CHANNEL;
+        snapshot.inputInfo.inputConfig = InputConfig::NO_INPUT_CHANNEL;
     }
     fillInputFrameInfo(snapshot.inputInfo, displayInfo.transform, snapshot);
 
     if (noValidDisplay) {
         // Do not let the window receive touches if it is not associated with a valid display
         // transform. We still allow the window to receive keys and prevent ANRs.
-        snapshot.inputInfo.inputConfig |= gui::WindowInfo::InputConfig::NOT_TOUCHABLE;
+        snapshot.inputInfo.inputConfig |= InputConfig::NOT_TOUCHABLE;
     }
 
     snapshot.inputInfo.alpha = snapshot.color.a;
@@ -1085,7 +1092,7 @@
     // If the window will be blacked out on a display because the display does not have the secure
     // flag and the layer has the secure flag set, then drop input.
     if (!displayInfo.isSecure && snapshot.isSecure) {
-        snapshot.inputInfo.inputConfig |= gui::WindowInfo::InputConfig::DROP_INPUT;
+        snapshot.inputInfo.inputConfig |= InputConfig::DROP_INPUT;
     }
 
     if (requested.touchCropId != UNASSIGNED_LAYER_ID || path.isClone()) {
@@ -1102,7 +1109,7 @@
     // Inherit the trusted state from the parent hierarchy, but don't clobber the trusted state
     // if it was set by WM for a known system overlay
     if (snapshot.isTrustedOverlay) {
-        snapshot.inputInfo.inputConfig |= gui::WindowInfo::InputConfig::TRUSTED_OVERLAY;
+        snapshot.inputInfo.inputConfig |= InputConfig::TRUSTED_OVERLAY;
     }
 
     snapshot.inputInfo.contentSize = snapshot.croppedBufferSize.getSize();
@@ -1110,10 +1117,10 @@
     // If the layer is a clone, we need to crop the input region to cloned root to prevent
     // touches from going outside the cloned area.
     if (path.isClone()) {
-        snapshot.inputInfo.inputConfig |= gui::WindowInfo::InputConfig::CLONE;
+        snapshot.inputInfo.inputConfig |= InputConfig::CLONE;
         // Cloned layers shouldn't handle watch outside since their z order is not determined by
         // WM or the client.
-        snapshot.inputInfo.inputConfig.clear(gui::WindowInfo::InputConfig::WATCH_OUTSIDE_TOUCH);
+        snapshot.inputInfo.inputConfig.clear(InputConfig::WATCH_OUTSIDE_TOUCH);
     }
 }
 
diff --git a/services/surfaceflinger/FrontEnd/RequestedLayerState.cpp b/services/surfaceflinger/FrontEnd/RequestedLayerState.cpp
index 867f3af..028bd19 100644
--- a/services/surfaceflinger/FrontEnd/RequestedLayerState.cpp
+++ b/services/surfaceflinger/FrontEnd/RequestedLayerState.cpp
@@ -585,11 +585,13 @@
         return false;
     }
 
-    static constexpr uint64_t deniedFlags = layer_state_t::eProducerDisconnect |
-            layer_state_t::eLayerChanged | layer_state_t::eRelativeLayerChanged |
-            layer_state_t::eTransparentRegionChanged | layer_state_t::eFlagsChanged |
-            layer_state_t::eBlurRegionsChanged | layer_state_t::eLayerStackChanged |
-            layer_state_t::eAutoRefreshChanged | layer_state_t::eReparent;
+    const uint64_t deniedFlags = layer_state_t::eProducerDisconnect | layer_state_t::eLayerChanged |
+            layer_state_t::eRelativeLayerChanged | layer_state_t::eTransparentRegionChanged |
+            layer_state_t::eFlagsChanged | layer_state_t::eBlurRegionsChanged |
+            layer_state_t::eLayerStackChanged | layer_state_t::eReparent |
+            (FlagManager::getInstance().latch_unsignaled_with_auto_refresh_changed()
+                     ? 0
+                     : layer_state_t::eAutoRefreshChanged);
     if (s.what & deniedFlags) {
         ATRACE_FORMAT_INSTANT("%s: false [has denied flags 0x%" PRIx64 "]", __func__,
                               s.what & deniedFlags);
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 80eee15..073bad3 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -3792,8 +3792,10 @@
     const uint64_t deniedFlags = layer_state_t::eProducerDisconnect | layer_state_t::eLayerChanged |
             layer_state_t::eRelativeLayerChanged | layer_state_t::eTransparentRegionChanged |
             layer_state_t::eFlagsChanged | layer_state_t::eBlurRegionsChanged |
-            layer_state_t::eLayerStackChanged | layer_state_t::eAutoRefreshChanged |
-            layer_state_t::eReparent;
+            layer_state_t::eLayerStackChanged | layer_state_t::eReparent |
+            (FlagManager::getInstance().latch_unsignaled_with_auto_refresh_changed()
+                     ? 0
+                     : layer_state_t::eAutoRefreshChanged);
 
     if ((s.what & requiredFlags) != requiredFlags) {
         ATRACE_FORMAT_INSTANT("%s: false [missing required flags 0x%" PRIx64 "]", __func__,
diff --git a/services/surfaceflinger/Scheduler/VSyncPredictor.h b/services/surfaceflinger/Scheduler/VSyncPredictor.h
index a661292..8ce61d8 100644
--- a/services/surfaceflinger/Scheduler/VSyncPredictor.h
+++ b/services/surfaceflinger/Scheduler/VSyncPredictor.h
@@ -68,6 +68,13 @@
 
     void setDisplayModePtr(ftl::NonNull<DisplayModePtr>) final EXCLUDES(mMutex);
 
+    bool isCurrentMode(const ftl::NonNull<DisplayModePtr>& modePtr) const EXCLUDES(mMutex) {
+        std::lock_guard lock(mMutex);
+        return mDisplayModePtr->getId() == modePtr->getId() &&
+                mDisplayModePtr->getVsyncRate().getPeriodNsecs() ==
+                mRateMap.find(idealPeriod())->second.slope;
+    }
+
     void setRenderRate(Fps, bool applyImmediately) final EXCLUDES(mMutex);
 
     void onFrameBegin(TimePoint expectedPresentTime, TimePoint lastConfirmedPresentTime) final
diff --git a/services/surfaceflinger/Scheduler/VSyncReactor.cpp b/services/surfaceflinger/Scheduler/VSyncReactor.cpp
index 9b8f310..8038364 100644
--- a/services/surfaceflinger/Scheduler/VSyncReactor.cpp
+++ b/services/surfaceflinger/Scheduler/VSyncReactor.cpp
@@ -141,8 +141,7 @@
     std::lock_guard lock(mMutex);
     mLastHwVsync.reset();
 
-    if (!mSupportKernelIdleTimer &&
-        modePtr->getVsyncRate().getPeriodNsecs() == mTracker.currentPeriod() && !force) {
+    if (!mSupportKernelIdleTimer && mTracker.isCurrentMode(modePtr) && !force) {
         endPeriodTransition();
         setIgnorePresentFencesInternal(false);
         mMoreSamplesNeeded = false;
diff --git a/services/surfaceflinger/Scheduler/VSyncTracker.h b/services/surfaceflinger/Scheduler/VSyncTracker.h
index 8787cdb..134d28e 100644
--- a/services/surfaceflinger/Scheduler/VSyncTracker.h
+++ b/services/surfaceflinger/Scheduler/VSyncTracker.h
@@ -71,6 +71,11 @@
      */
     virtual Period minFramePeriod() const = 0;
 
+    /**
+     * Checks if the sourced mode is equal to the mode in the tracker.
+     */
+    virtual bool isCurrentMode(const ftl::NonNull<DisplayModePtr>& modePtr) const = 0;
+
     /* Inform the tracker that the samples it has are not accurate for prediction. */
     virtual void resetModel() = 0;
 
diff --git a/services/surfaceflinger/common/FlagManager.cpp b/services/surfaceflinger/common/FlagManager.cpp
index d9334d6..12043d4 100644
--- a/services/surfaceflinger/common/FlagManager.cpp
+++ b/services/surfaceflinger/common/FlagManager.cpp
@@ -140,6 +140,8 @@
     DUMP_READ_ONLY_FLAG(ce_fence_promise);
     DUMP_READ_ONLY_FLAG(idle_screen_refresh_rate_timeout);
     DUMP_READ_ONLY_FLAG(graphite_renderengine);
+    DUMP_READ_ONLY_FLAG(latch_unsignaled_with_auto_refresh_changed);
+
 #undef DUMP_READ_ONLY_FLAG
 #undef DUMP_SERVER_FLAG
 #undef DUMP_FLAG_INTERVAL
@@ -229,6 +231,7 @@
 FLAG_MANAGER_READ_ONLY_FLAG(protected_if_client, "")
 FLAG_MANAGER_READ_ONLY_FLAG(ce_fence_promise, "");
 FLAG_MANAGER_READ_ONLY_FLAG(graphite_renderengine, "debug.renderengine.graphite")
+FLAG_MANAGER_READ_ONLY_FLAG(latch_unsignaled_with_auto_refresh_changed, "");
 
 /// Trunk stable server flags ///
 FLAG_MANAGER_SERVER_FLAG(refresh_rate_overlay_on_external_display, "")
diff --git a/services/surfaceflinger/common/include/common/FlagManager.h b/services/surfaceflinger/common/include/common/FlagManager.h
index 819e587..0239eb0 100644
--- a/services/surfaceflinger/common/include/common/FlagManager.h
+++ b/services/surfaceflinger/common/include/common/FlagManager.h
@@ -78,6 +78,7 @@
     bool ce_fence_promise() const;
     bool idle_screen_refresh_rate_timeout() const;
     bool graphite_renderengine() const;
+    bool latch_unsignaled_with_auto_refresh_changed() const;
 
 protected:
     // overridden for unit tests
diff --git a/services/surfaceflinger/surfaceflinger_flags_new.aconfig b/services/surfaceflinger/surfaceflinger_flags_new.aconfig
index a8fd6b7..0b9fd58 100644
--- a/services/surfaceflinger/surfaceflinger_flags_new.aconfig
+++ b/services/surfaceflinger/surfaceflinger_flags_new.aconfig
@@ -22,13 +22,6 @@
  } # ce_fence_promise
 
 flag {
-  name: "dont_skip_on_early_ro2"
-  namespace: "core_graphics"
-  description: "This flag is guarding the behaviour where SurfaceFlinger is trying to opportunistically present a frame when the configuration change from late to early"
-  bug: "273702768"
-} # dont_skip_on_early_ro2
-
-flag {
   name: "frame_rate_category_mrr"
   namespace: "core_graphics"
   description: "Enable to use frame rate category and newer frame rate votes such as GTE in SurfaceFlinger scheduler, to guard dVRR changes from MRR devices"
@@ -39,4 +32,15 @@
   }
 } # frame_rate_category_mrr
 
+flag {
+  name: "latch_unsignaled_with_auto_refresh_changed"
+  namespace: "core_graphics"
+  description: "Ignore eAutoRefreshChanged with latch unsignaled"
+  bug: "331513837"
+  is_fixed_read_only: true
+  metadata {
+    purpose: PURPOSE_BUGFIX
+  }
+} # latch_unsignaled_with_auto_refresh_changed
+
 # IMPORTANT - please keep alphabetize to reduce merge conflicts
diff --git a/services/surfaceflinger/tests/unittests/LayerHierarchyTest.h b/services/surfaceflinger/tests/unittests/LayerHierarchyTest.h
index 67e6249..e8e7667 100644
--- a/services/surfaceflinger/tests/unittests/LayerHierarchyTest.h
+++ b/services/surfaceflinger/tests/unittests/LayerHierarchyTest.h
@@ -281,6 +281,24 @@
         mLifecycleManager.applyTransactions(transactions);
     }
 
+    void setInputInfo(uint32_t id, std::function<void(gui::WindowInfo&)> configureInput) {
+        std::vector<TransactionState> transactions;
+        transactions.emplace_back();
+        transactions.back().states.push_back({});
+
+        transactions.back().states.front().state.what = layer_state_t::eInputInfoChanged;
+        transactions.back().states.front().layerId = id;
+        transactions.back().states.front().state.windowInfoHandle =
+                sp<gui::WindowInfoHandle>::make();
+        auto inputInfo = transactions.back().states.front().state.windowInfoHandle->editInfo();
+        if (!inputInfo->token) {
+            inputInfo->token = sp<BBinder>::make();
+        }
+        configureInput(*inputInfo);
+
+        mLifecycleManager.applyTransactions(transactions);
+    }
+
     void setTouchableRegionCrop(uint32_t id, Region region, uint32_t touchCropId,
                                 bool replaceTouchableRegionWithCrop) {
         std::vector<TransactionState> transactions;
diff --git a/services/surfaceflinger/tests/unittests/LayerSnapshotTest.cpp b/services/surfaceflinger/tests/unittests/LayerSnapshotTest.cpp
index 94989aa..ae9a89c 100644
--- a/services/surfaceflinger/tests/unittests/LayerSnapshotTest.cpp
+++ b/services/surfaceflinger/tests/unittests/LayerSnapshotTest.cpp
@@ -1198,6 +1198,42 @@
     EXPECT_TRUE(getSnapshot(11)->isSecure);
 }
 
+TEST_F(LayerSnapshotTest, setSensitiveForTracingConfigForSecureLayers) {
+    setFlags(11, layer_state_t::eLayerSecure, layer_state_t::eLayerSecure);
+
+    UPDATE_AND_VERIFY(mSnapshotBuilder, STARTING_ZORDER);
+
+    EXPECT_TRUE(getSnapshot(11)->inputInfo.inputConfig.test(
+            gui::WindowInfo::InputConfig::SENSITIVE_FOR_TRACING));
+    EXPECT_TRUE(getSnapshot(111)->inputInfo.inputConfig.test(
+            gui::WindowInfo::InputConfig::SENSITIVE_FOR_TRACING));
+    EXPECT_FALSE(getSnapshot(1)->inputInfo.inputConfig.test(
+            gui::WindowInfo::InputConfig::SENSITIVE_FOR_TRACING));
+    EXPECT_FALSE(getSnapshot(12)->inputInfo.inputConfig.test(
+            gui::WindowInfo::InputConfig::SENSITIVE_FOR_TRACING));
+    EXPECT_FALSE(getSnapshot(2)->inputInfo.inputConfig.test(
+            gui::WindowInfo::InputConfig::SENSITIVE_FOR_TRACING));
+}
+
+TEST_F(LayerSnapshotTest, setSensitiveForTracingFromInputWindowHandle) {
+    setInputInfo(11, [](auto& inputInfo) {
+        inputInfo.inputConfig |= gui::WindowInfo::InputConfig::SENSITIVE_FOR_TRACING;
+    });
+
+    UPDATE_AND_VERIFY(mSnapshotBuilder, STARTING_ZORDER);
+
+    EXPECT_TRUE(getSnapshot(11)->inputInfo.inputConfig.test(
+            gui::WindowInfo::InputConfig::SENSITIVE_FOR_TRACING));
+    EXPECT_TRUE(getSnapshot(111)->inputInfo.inputConfig.test(
+            gui::WindowInfo::InputConfig::SENSITIVE_FOR_TRACING));
+    EXPECT_FALSE(getSnapshot(1)->inputInfo.inputConfig.test(
+            gui::WindowInfo::InputConfig::SENSITIVE_FOR_TRACING));
+    EXPECT_FALSE(getSnapshot(12)->inputInfo.inputConfig.test(
+            gui::WindowInfo::InputConfig::SENSITIVE_FOR_TRACING));
+    EXPECT_FALSE(getSnapshot(2)->inputInfo.inputConfig.test(
+            gui::WindowInfo::InputConfig::SENSITIVE_FOR_TRACING));
+}
+
 // b/314350323
 TEST_F(LayerSnapshotTest, propagateDropInputMode) {
     setDropInputMode(1, gui::DropInputMode::ALL);
diff --git a/services/surfaceflinger/tests/unittests/TransactionApplicationTest.cpp b/services/surfaceflinger/tests/unittests/TransactionApplicationTest.cpp
index 1f2a1ed..7fb9247 100644
--- a/services/surfaceflinger/tests/unittests/TransactionApplicationTest.cpp
+++ b/services/surfaceflinger/tests/unittests/TransactionApplicationTest.cpp
@@ -17,6 +17,7 @@
 #undef LOG_TAG
 #define LOG_TAG "TransactionApplicationTest"
 
+#include <common/test/FlagUtils.h>
 #include <compositionengine/Display.h>
 #include <compositionengine/mock/DisplaySurface.h>
 #include <gmock/gmock.h>
@@ -34,8 +35,11 @@
 #include "TestableSurfaceFlinger.h"
 #include "TransactionState.h"
 
+#include <com_android_graphics_surfaceflinger_flags.h>
+
 namespace android {
 
+using namespace com::android::graphics::surfaceflinger;
 using testing::_;
 using testing::Return;
 
@@ -498,6 +502,44 @@
     setTransactionStates({unsignaledTransaction}, kExpectedTransactionsPending);
 }
 
+TEST_F(LatchUnsignaledAutoSingleLayerTest, Flush_KeepsUnSignaledInTheQueue_AutoRefreshChanged) {
+    SET_FLAG_FOR_TEST(flags::latch_unsignaled_with_auto_refresh_changed, false);
+    const sp<IBinder> kApplyToken =
+            IInterface::asBinder(TransactionCompletedListener::getIInstance());
+    const auto kLayerId = 1;
+    const auto kExpectedTransactionsPending = 1u;
+
+    const auto unsignaledTransaction =
+            createTransactionInfo(kApplyToken,
+                                  {
+                                          createComposerState(kLayerId,
+                                                              fence(Fence::Status::Unsignaled),
+                                                              layer_state_t::eAutoRefreshChanged |
+                                                                      layer_state_t::
+                                                                              eBufferChanged),
+                                  });
+    setTransactionStates({unsignaledTransaction}, kExpectedTransactionsPending);
+}
+
+TEST_F(LatchUnsignaledAutoSingleLayerTest, Flush_RemovesUnSignaledInTheQueue_AutoRefreshChanged) {
+    SET_FLAG_FOR_TEST(flags::latch_unsignaled_with_auto_refresh_changed, true);
+    const sp<IBinder> kApplyToken =
+            IInterface::asBinder(TransactionCompletedListener::getIInstance());
+    const auto kLayerId = 1;
+    const auto kExpectedTransactionsPending = 0u;
+
+    const auto unsignaledTransaction =
+            createTransactionInfo(kApplyToken,
+                                  {
+                                          createComposerState(kLayerId,
+                                                              fence(Fence::Status::Unsignaled),
+                                                              layer_state_t::eAutoRefreshChanged |
+                                                                      layer_state_t::
+                                                                              eBufferChanged),
+                                  });
+    setTransactionStates({unsignaledTransaction}, kExpectedTransactionsPending);
+}
+
 TEST_F(LatchUnsignaledAutoSingleLayerTest, Flush_KeepsUnSignaledInTheQueue_NonBufferChangeClubed) {
     const sp<IBinder> kApplyToken =
             IInterface::asBinder(TransactionCompletedListener::getIInstance());
diff --git a/services/surfaceflinger/tests/unittests/VSyncDispatchRealtimeTest.cpp b/services/surfaceflinger/tests/unittests/VSyncDispatchRealtimeTest.cpp
index d701a97..3b09554 100644
--- a/services/surfaceflinger/tests/unittests/VSyncDispatchRealtimeTest.cpp
+++ b/services/surfaceflinger/tests/unittests/VSyncDispatchRealtimeTest.cpp
@@ -54,6 +54,7 @@
     void onFrameBegin(TimePoint, TimePoint) final {}
     void onFrameMissed(TimePoint) final {}
     void dump(std::string&) const final {}
+    bool isCurrentMode(const ftl::NonNull<DisplayModePtr>&) const final { return false; };
 
 protected:
     std::mutex mutable mMutex;
diff --git a/services/surfaceflinger/tests/unittests/VSyncReactorTest.cpp b/services/surfaceflinger/tests/unittests/VSyncReactorTest.cpp
index e3aa4ef..51373c1 100644
--- a/services/surfaceflinger/tests/unittests/VSyncReactorTest.cpp
+++ b/services/surfaceflinger/tests/unittests/VSyncReactorTest.cpp
@@ -230,7 +230,8 @@
 TEST_F(VSyncReactorTest, changingPeriodBackAbortsConfirmationProcess) {
     nsecs_t sampleTime = 0;
     nsecs_t const newPeriod = 5000;
-    mReactor.onDisplayModeChanged(displayMode(newPeriod), false);
+    auto modePtr = displayMode(newPeriod);
+    mReactor.onDisplayModeChanged(modePtr, false);
     bool periodFlushed = true;
     EXPECT_TRUE(mReactor.addHwVsyncTimestamp(sampleTime += period, std::nullopt, &periodFlushed));
     EXPECT_FALSE(periodFlushed);
@@ -238,7 +239,9 @@
     EXPECT_TRUE(mReactor.addHwVsyncTimestamp(sampleTime += period, std::nullopt, &periodFlushed));
     EXPECT_FALSE(periodFlushed);
 
-    mReactor.onDisplayModeChanged(displayMode(period), false);
+    modePtr = displayMode(period);
+    EXPECT_CALL(*mMockTracker, isCurrentMode(modePtr)).WillOnce(Return(true));
+    mReactor.onDisplayModeChanged(modePtr, false);
     EXPECT_FALSE(mReactor.addHwVsyncTimestamp(sampleTime += period, std::nullopt, &periodFlushed));
     EXPECT_FALSE(periodFlushed);
 }
diff --git a/services/surfaceflinger/tests/unittests/mock/MockVSyncTracker.h b/services/surfaceflinger/tests/unittests/mock/MockVSyncTracker.h
index c311901..4f44d1b 100644
--- a/services/surfaceflinger/tests/unittests/mock/MockVSyncTracker.h
+++ b/services/surfaceflinger/tests/unittests/mock/MockVSyncTracker.h
@@ -40,6 +40,7 @@
     MOCK_METHOD(void, onFrameBegin, (TimePoint, TimePoint), (override));
     MOCK_METHOD(void, onFrameMissed, (TimePoint), (override));
     MOCK_METHOD(void, dump, (std::string&), (const, override));
+    MOCK_METHOD(bool, isCurrentMode, (const ftl::NonNull<DisplayModePtr>&), (const, override));
 };
 
 } // namespace android::mock