diff --git a/services/surfaceflinger/Scheduler/DispSyncSource.cpp b/services/surfaceflinger/Scheduler/DispSyncSource.cpp
index 571c9ca..bd4b0ec 100644
--- a/services/surfaceflinger/Scheduler/DispSyncSource.cpp
+++ b/services/surfaceflinger/Scheduler/DispSyncSource.cpp
@@ -27,16 +27,14 @@
 
 namespace android {
 
-DispSyncSource::DispSyncSource(DispSync* dispSync, nsecs_t phaseOffset,
-                               nsecs_t offsetThresholdForNextVsync, bool traceVsync,
+DispSyncSource::DispSyncSource(DispSync* dispSync, nsecs_t phaseOffset, bool traceVsync,
                                const char* name)
       : mName(name),
         mValue(base::StringPrintf("VSYNC-%s", name), 0),
         mTraceVsync(traceVsync),
         mVsyncOnLabel(base::StringPrintf("VsyncOn-%s", name)),
         mDispSync(dispSync),
-        mPhaseOffset(base::StringPrintf("VsyncOffset-%s", name), phaseOffset),
-        mOffsetThresholdForNextVsync(offsetThresholdForNextVsync) {}
+        mPhaseOffset(base::StringPrintf("VsyncOffset-%s", name), phaseOffset) {}
 
 void DispSyncSource::setVSyncEnabled(bool enable) {
     std::lock_guard lock(mVsyncMutex);
@@ -67,10 +65,6 @@
 void DispSyncSource::setPhaseOffset(nsecs_t phaseOffset) {
     std::lock_guard lock(mVsyncMutex);
     const nsecs_t period = mDispSync->getPeriod();
-    // Check if offset should be handled as negative
-    if (phaseOffset >= mOffsetThresholdForNextVsync) {
-        phaseOffset -= period;
-    }
 
     // Normalize phaseOffset to [-period, period)
     const int numPeriods = phaseOffset / period;
diff --git a/services/surfaceflinger/Scheduler/DispSyncSource.h b/services/surfaceflinger/Scheduler/DispSyncSource.h
index 536464e..328b8c1 100644
--- a/services/surfaceflinger/Scheduler/DispSyncSource.h
+++ b/services/surfaceflinger/Scheduler/DispSyncSource.h
@@ -26,8 +26,7 @@
 
 class DispSyncSource final : public VSyncSource, private DispSync::Callback {
 public:
-    DispSyncSource(DispSync* dispSync, nsecs_t phaseOffset, nsecs_t offsetThresholdForNextVsync,
-                   bool traceVsync, const char* name);
+    DispSyncSource(DispSync* dispSync, nsecs_t phaseOffset, bool traceVsync, const char* name);
 
     ~DispSyncSource() override = default;
 
@@ -55,7 +54,6 @@
 
     std::mutex mVsyncMutex;
     TracedOrdinal<nsecs_t> mPhaseOffset GUARDED_BY(mVsyncMutex);
-    const nsecs_t mOffsetThresholdForNextVsync;
     bool mEnabled GUARDED_BY(mVsyncMutex) = false;
 };
 
diff --git a/services/surfaceflinger/Scheduler/InjectVSyncSource.h b/services/surfaceflinger/Scheduler/InjectVSyncSource.h
index 6c502e6..fa46e6f 100644
--- a/services/surfaceflinger/Scheduler/InjectVSyncSource.h
+++ b/services/surfaceflinger/Scheduler/InjectVSyncSource.h
@@ -45,7 +45,6 @@
     const char* getName() const override { return "inject"; }
     void setVSyncEnabled(bool) override {}
     void setPhaseOffset(nsecs_t) override {}
-    void pauseVsyncCallback(bool) {}
 
 private:
     std::mutex mCallbackMutex;
diff --git a/services/surfaceflinger/Scheduler/PhaseOffsets.cpp b/services/surfaceflinger/Scheduler/PhaseOffsets.cpp
index 12832a6..4330742 100644
--- a/services/surfaceflinger/Scheduler/PhaseOffsets.cpp
+++ b/services/surfaceflinger/Scheduler/PhaseOffsets.cpp
@@ -35,45 +35,48 @@
 
 namespace android::scheduler {
 
-PhaseOffsets::~PhaseOffsets() = default;
+PhaseConfiguration::~PhaseConfiguration() = default;
 
 namespace impl {
 
-PhaseOffsets::PhaseOffsets() {
-    // Below defines the threshold when an offset is considered to be negative, i.e. targeting
-    // for the N+2 vsync instead of N+1. This means that:
-    // For offset < threshold, SF wake up (vsync_duration - offset) before HW vsync.
-    // For offset >= threshold, SF wake up (2 * vsync_duration - offset) before HW vsync.
-    const nsecs_t thresholdForNextVsync =
-            getProperty("debug.sf.phase_offset_threshold_for_next_vsync_ns")
-                    .value_or(std::numeric_limits<nsecs_t>::max());
-
-    mDefaultOffsets = getDefaultOffsets(thresholdForNextVsync);
-    mHighFpsOffsets = getHighFpsOffsets(thresholdForNextVsync);
-}
-
-PhaseOffsets::Offsets PhaseOffsets::getOffsetsForRefreshRate(float fps) const {
-    // TODO(145561086): Once offsets are common for all refresh rates we can remove the magic
-    // number for refresh rate
-    if (fps > 65.0f) {
-        return mHighFpsOffsets;
-    } else {
-        return mDefaultOffsets;
-    }
-}
+PhaseOffsets::PhaseOffsets(const scheduler::RefreshRateConfigs& refreshRateConfigs)
+      : // Below defines the threshold when an offset is considered to be negative, i.e. targeting
+        // for the N+2 vsync instead of N+1. This means that:
+        // For offset < threshold, SF wake up (vsync_duration - offset) before HW vsync.
+        // For offset >= threshold, SF wake up (2 * vsync_duration - offset) before HW vsync.
+        mThresholdForNextVsync(getProperty("debug.sf.phase_offset_threshold_for_next_vsync_ns")
+                                       .value_or(std::numeric_limits<nsecs_t>::max())),
+        mOffsets(initializeOffsets(refreshRateConfigs)),
+        mRefreshRateFps(refreshRateConfigs.getCurrentRefreshRate().fps) {}
 
 void PhaseOffsets::dump(std::string& result) const {
-    const auto [early, earlyGl, late, threshold] = getCurrentOffsets();
+    const auto [early, earlyGl, late] = getCurrentOffsets();
     using base::StringAppendF;
     StringAppendF(&result,
                   "           app phase: %9" PRId64 " ns\t         SF phase: %9" PRId64 " ns\n"
                   "     early app phase: %9" PRId64 " ns\t   early SF phase: %9" PRId64 " ns\n"
                   "  GL early app phase: %9" PRId64 " ns\tGL early SF phase: %9" PRId64 " ns\n"
                   "next VSYNC threshold: %9" PRId64 " ns\n",
-                  late.app, late.sf, early.app, early.sf, earlyGl.app, earlyGl.sf, threshold);
+                  late.app, late.sf, early.app, early.sf, earlyGl.app, earlyGl.sf,
+                  mThresholdForNextVsync);
 }
 
-PhaseOffsets::Offsets PhaseOffsets::getDefaultOffsets(nsecs_t thresholdForNextVsync) {
+std::unordered_map<float, PhaseDurations::Offsets> PhaseOffsets::initializeOffsets(
+        const scheduler::RefreshRateConfigs& refreshRateConfigs) const {
+    std::unordered_map<float, PhaseDurations::Offsets> offsets;
+
+    for (const auto& [ignored, refreshRate] : refreshRateConfigs.getAllRefreshRates()) {
+        const nsecs_t vsyncDuration = static_cast<nsecs_t>(1e9f / refreshRate.fps);
+        if (refreshRate.fps > 65.0f) {
+            offsets.emplace(refreshRate.fps, getHighFpsOffsets(vsyncDuration));
+        } else {
+            offsets.emplace(refreshRate.fps, getDefaultOffsets(vsyncDuration));
+        }
+    }
+    return offsets;
+}
+
+PhaseOffsets::Offsets PhaseOffsets::getDefaultOffsets(nsecs_t vsyncDuration) const {
     const int64_t vsyncPhaseOffsetNs = sysprop::vsync_event_phase_offset_ns(1000000);
     const int64_t sfVsyncPhaseOffsetNs = sysprop::vsync_sf_event_phase_offset_ns(1000000);
 
@@ -82,19 +85,32 @@
     const auto earlyAppOffsetNs = getProperty("debug.sf.early_app_phase_offset_ns");
     const auto earlyGlAppOffsetNs = getProperty("debug.sf.early_gl_app_phase_offset_ns");
 
-    return {{earlySfOffsetNs.value_or(sfVsyncPhaseOffsetNs),
-             earlyAppOffsetNs.value_or(vsyncPhaseOffsetNs)},
+    return {
+            {
+                    earlySfOffsetNs.value_or(sfVsyncPhaseOffsetNs) < mThresholdForNextVsync
+                            ? earlySfOffsetNs.value_or(sfVsyncPhaseOffsetNs)
+                            : earlySfOffsetNs.value_or(sfVsyncPhaseOffsetNs) - vsyncDuration,
 
-            {earlyGlSfOffsetNs.value_or(sfVsyncPhaseOffsetNs),
-             earlyGlAppOffsetNs.value_or(vsyncPhaseOffsetNs)},
+                    earlyAppOffsetNs.value_or(vsyncPhaseOffsetNs),
+            },
+            {
+                    earlyGlSfOffsetNs.value_or(sfVsyncPhaseOffsetNs) < mThresholdForNextVsync
+                            ? earlyGlSfOffsetNs.value_or(sfVsyncPhaseOffsetNs)
+                            : earlyGlSfOffsetNs.value_or(sfVsyncPhaseOffsetNs) - vsyncDuration,
 
-            {sfVsyncPhaseOffsetNs, vsyncPhaseOffsetNs},
+                    earlyGlAppOffsetNs.value_or(vsyncPhaseOffsetNs),
+            },
+            {
+                    sfVsyncPhaseOffsetNs < mThresholdForNextVsync
+                            ? sfVsyncPhaseOffsetNs
+                            : sfVsyncPhaseOffsetNs - vsyncDuration,
 
-            thresholdForNextVsync};
+                    vsyncPhaseOffsetNs,
+            },
+    };
 }
 
-PhaseOffsets::Offsets PhaseOffsets::getHighFpsOffsets(nsecs_t thresholdForNextVsync) {
-    // TODO(b/122905996): Define these in device.mk.
+PhaseOffsets::Offsets PhaseOffsets::getHighFpsOffsets(nsecs_t vsyncDuration) const {
     const int highFpsLateAppOffsetNs =
             getProperty("debug.sf.high_fps_late_app_phase_offset_ns").value_or(2000000);
     const int highFpsLateSfOffsetNs =
@@ -106,15 +122,195 @@
     const auto highFpsEarlyGlAppOffsetNs =
             getProperty("debug.sf.high_fps_early_gl_app_phase_offset_ns");
 
-    return {{highFpsEarlySfOffsetNs.value_or(highFpsLateSfOffsetNs),
-             highFpsEarlyAppOffsetNs.value_or(highFpsLateAppOffsetNs)},
+    return {
+            {
+                    highFpsEarlySfOffsetNs.value_or(highFpsLateSfOffsetNs) < mThresholdForNextVsync
+                            ? highFpsEarlySfOffsetNs.value_or(highFpsLateSfOffsetNs)
+                            : highFpsEarlySfOffsetNs.value_or(highFpsLateSfOffsetNs) -
+                                    vsyncDuration,
 
-            {highFpsEarlyGlSfOffsetNs.value_or(highFpsLateSfOffsetNs),
-             highFpsEarlyGlAppOffsetNs.value_or(highFpsLateAppOffsetNs)},
+                    highFpsEarlyAppOffsetNs.value_or(highFpsLateAppOffsetNs),
+            },
+            {
+                    highFpsEarlyGlSfOffsetNs.value_or(highFpsLateSfOffsetNs) <
+                                    mThresholdForNextVsync
+                            ? highFpsEarlyGlSfOffsetNs.value_or(highFpsLateSfOffsetNs)
+                            : highFpsEarlyGlSfOffsetNs.value_or(highFpsLateSfOffsetNs) -
+                                    vsyncDuration,
 
-            {highFpsLateSfOffsetNs, highFpsLateAppOffsetNs},
+                    highFpsEarlyGlAppOffsetNs.value_or(highFpsLateAppOffsetNs),
+            },
+            {
+                    highFpsLateSfOffsetNs < mThresholdForNextVsync
+                            ? highFpsLateSfOffsetNs
+                            : highFpsLateSfOffsetNs - vsyncDuration,
 
-            thresholdForNextVsync};
+                    highFpsLateAppOffsetNs,
+            },
+    };
+}
+
+static void validateSysprops() {
+    const auto validatePropertyBool = [](const char* prop) {
+        LOG_ALWAYS_FATAL_IF(!property_get_bool(prop, false), "%s is false", prop);
+    };
+
+    validatePropertyBool("debug.sf.use_phase_offsets_as_durations");
+
+    LOG_ALWAYS_FATAL_IF(sysprop::vsync_event_phase_offset_ns(-1) != -1,
+                        "ro.surface_flinger.vsync_event_phase_offset_ns is set but expecting "
+                        "duration");
+
+    LOG_ALWAYS_FATAL_IF(sysprop::vsync_sf_event_phase_offset_ns(-1) != -1,
+                        "ro.surface_flinger.vsync_sf_event_phase_offset_ns is set but expecting "
+                        "duration");
+
+    const auto validateProperty = [](const char* prop) {
+        LOG_ALWAYS_FATAL_IF(getProperty(prop).has_value(),
+                            "%s is set to %" PRId64 " but expecting duration", prop,
+                            getProperty(prop).value_or(-1));
+    };
+
+    validateProperty("debug.sf.early_phase_offset_ns");
+    validateProperty("debug.sf.early_gl_phase_offset_ns");
+    validateProperty("debug.sf.early_app_phase_offset_ns");
+    validateProperty("debug.sf.early_gl_app_phase_offset_ns");
+    validateProperty("debug.sf.high_fps_late_app_phase_offset_ns");
+    validateProperty("debug.sf.high_fps_late_sf_phase_offset_ns");
+    validateProperty("debug.sf.high_fps_early_phase_offset_ns");
+    validateProperty("debug.sf.high_fps_early_gl_phase_offset_ns");
+    validateProperty("debug.sf.high_fps_early_app_phase_offset_ns");
+    validateProperty("debug.sf.high_fps_early_gl_app_phase_offset_ns");
+}
+
+static nsecs_t sfDurationToOffset(nsecs_t sfDuration, nsecs_t vsyncDuration) {
+    return sfDuration == -1 ? 1'000'000 : vsyncDuration - sfDuration % vsyncDuration;
+}
+
+static nsecs_t appDurationToOffset(nsecs_t appDuration, nsecs_t sfDuration, nsecs_t vsyncDuration) {
+    return sfDuration == -1 ? 1'000'000
+                            : vsyncDuration - (appDuration + sfDuration) % vsyncDuration;
+}
+
+static std::vector<float> getRefreshRatesFromConfigs(
+        const android::scheduler::RefreshRateConfigs& refreshRateConfigs) {
+    const auto& allRefreshRates = refreshRateConfigs.getAllRefreshRates();
+    std::vector<float> refreshRates;
+    refreshRates.reserve(allRefreshRates.size());
+
+    for (const auto& [ignored, refreshRate] : allRefreshRates) {
+        refreshRates.emplace_back(refreshRate.fps);
+    }
+
+    return refreshRates;
+}
+
+std::unordered_map<float, PhaseDurations::Offsets> PhaseDurations::initializeOffsets(
+        const std::vector<float>& refreshRates) const {
+    std::unordered_map<float, PhaseDurations::Offsets> offsets;
+
+    for (const auto fps : refreshRates) {
+        const nsecs_t vsyncDuration = static_cast<nsecs_t>(1e9f / fps);
+        offsets.emplace(fps,
+                        Offsets{
+                                {
+                                        mSfEarlyDuration < vsyncDuration
+                                                ? sfDurationToOffset(mSfEarlyDuration,
+                                                                     vsyncDuration)
+                                                : sfDurationToOffset(mSfEarlyDuration,
+                                                                     vsyncDuration) -
+                                                        vsyncDuration,
+
+                                        appDurationToOffset(mAppEarlyDuration, mSfEarlyDuration,
+                                                            vsyncDuration),
+                                },
+                                {
+                                        mSfEarlyGlDuration < vsyncDuration
+                                                ? sfDurationToOffset(mSfEarlyGlDuration,
+                                                                     vsyncDuration)
+                                                : sfDurationToOffset(mSfEarlyGlDuration,
+                                                                     vsyncDuration) -
+                                                        vsyncDuration,
+
+                                        appDurationToOffset(mAppEarlyGlDuration, mSfEarlyGlDuration,
+                                                            vsyncDuration),
+                                },
+                                {
+                                        mSfDuration < vsyncDuration
+                                                ? sfDurationToOffset(mSfDuration, vsyncDuration)
+                                                : sfDurationToOffset(mSfDuration, vsyncDuration) -
+                                                        vsyncDuration,
+
+                                        appDurationToOffset(mAppDuration, mSfDuration,
+                                                            vsyncDuration),
+                                },
+                        });
+    }
+    return offsets;
+}
+
+PhaseDurations::PhaseDurations(const scheduler::RefreshRateConfigs& refreshRateConfigs)
+      : PhaseDurations(getRefreshRatesFromConfigs(refreshRateConfigs),
+                       refreshRateConfigs.getCurrentRefreshRate().fps,
+                       getProperty("debug.sf.late.sf.duration").value_or(-1),
+                       getProperty("debug.sf.late.app.duration").value_or(-1),
+                       getProperty("debug.sf.early.sf.duration").value_or(mSfDuration),
+                       getProperty("debug.sf.early.app.duration").value_or(mAppDuration),
+                       getProperty("debug.sf.earlyGl.sf.duration").value_or(mSfDuration),
+                       getProperty("debug.sf.earlyGl.app.duration").value_or(mAppDuration)) {
+    validateSysprops();
+}
+
+PhaseDurations::PhaseDurations(const std::vector<float>& refreshRates, float currentFps,
+                               nsecs_t sfDuration, nsecs_t appDuration, nsecs_t sfEarlyDuration,
+                               nsecs_t appEarlyDuration, nsecs_t sfEarlyGlDuration,
+                               nsecs_t appEarlyGlDuration)
+      : mSfDuration(sfDuration),
+        mAppDuration(appDuration),
+        mSfEarlyDuration(sfEarlyDuration),
+        mAppEarlyDuration(appEarlyDuration),
+        mSfEarlyGlDuration(sfEarlyGlDuration),
+        mAppEarlyGlDuration(appEarlyGlDuration),
+        mOffsets(initializeOffsets(refreshRates)),
+        mRefreshRateFps(currentFps) {}
+
+PhaseOffsets::Offsets PhaseDurations::getOffsetsForRefreshRate(float fps) const {
+    const auto iter = mOffsets.find(fps);
+    LOG_ALWAYS_FATAL_IF(iter == mOffsets.end());
+    return iter->second;
+}
+
+void PhaseDurations::dump(std::string& result) const {
+    const auto [early, earlyGl, late] = getCurrentOffsets();
+    using base::StringAppendF;
+    StringAppendF(&result,
+                  "           app phase:    %9" PRId64 " ns\t         SF phase:    %9" PRId64
+                  " ns\n"
+                  "           app duration: %9" PRId64 " ns\t         SF duration: %9" PRId64
+                  " ns\n"
+                  "     early app phase:    %9" PRId64 " ns\t   early SF phase:    %9" PRId64
+                  " ns\n"
+                  "     early app duration: %9" PRId64 " ns\t   early SF duration: %9" PRId64
+                  " ns\n"
+                  "  GL early app phase:    %9" PRId64 " ns\tGL early SF phase:    %9" PRId64
+                  " ns\n"
+                  "  GL early app duration: %9" PRId64 " ns\tGL early SF duration: %9" PRId64
+                  " ns\n",
+                  late.app,
+
+                  late.sf,
+
+                  mAppDuration, mSfDuration,
+
+                  early.app, early.sf,
+
+                  mAppEarlyDuration, mSfEarlyDuration,
+
+                  earlyGl.app,
+
+                  earlyGl.sf,
+
+                  mAppEarlyGlDuration, mSfEarlyGlDuration);
 }
 
 } // namespace impl
diff --git a/services/surfaceflinger/Scheduler/PhaseOffsets.h b/services/surfaceflinger/Scheduler/PhaseOffsets.h
index 7747f0c..c10efde 100644
--- a/services/surfaceflinger/Scheduler/PhaseOffsets.h
+++ b/services/surfaceflinger/Scheduler/PhaseOffsets.h
@@ -29,17 +29,11 @@
  * different offsets will help us with latency. This class keeps track of
  * which mode the device is on, and returns approprate offsets when needed.
  */
-class PhaseOffsets {
+class PhaseConfiguration {
 public:
     using Offsets = VSyncModulator::OffsetsConfig;
 
-    virtual ~PhaseOffsets();
-
-    nsecs_t getCurrentAppOffset() const { return getCurrentOffsets().late.app; }
-    nsecs_t getCurrentSfOffset() const { return getCurrentOffsets().late.sf; }
-    nsecs_t getOffsetThresholdForNextVsync() const {
-        return getCurrentOffsets().thresholdForNextVsync;
-    }
+    virtual ~PhaseConfiguration();
 
     virtual Offsets getCurrentOffsets() const = 0;
     virtual Offsets getOffsetsForRefreshRate(float fps) const = 0;
@@ -51,9 +45,51 @@
 
 namespace impl {
 
-class PhaseOffsets : public scheduler::PhaseOffsets {
+/*
+ * This is the old implementation of phase offsets and considered as deprecated.
+ * PhaseDurations is the new implementation.
+ */
+class PhaseOffsets : public scheduler::PhaseConfiguration {
 public:
-    PhaseOffsets();
+    PhaseOffsets(const scheduler::RefreshRateConfigs&);
+
+    // Returns early, early GL, and late offsets for Apps and SF for a given refresh rate.
+    Offsets getOffsetsForRefreshRate(float fps) const override {
+        const auto iter = mOffsets.find(fps);
+        LOG_ALWAYS_FATAL_IF(iter == mOffsets.end());
+        return iter->second;
+    }
+
+    // Returns early, early GL, and late offsets for Apps and SF.
+    Offsets getCurrentOffsets() const override { return getOffsetsForRefreshRate(mRefreshRateFps); }
+
+    // This function should be called when the device is switching between different
+    // refresh rates, to properly update the offsets.
+    void setRefreshRateFps(float fps) override { mRefreshRateFps = fps; }
+
+    // Returns current offsets in human friendly format.
+    void dump(std::string& result) const override;
+
+private:
+    std::unordered_map<float, PhaseOffsets::Offsets> initializeOffsets(
+            const scheduler::RefreshRateConfigs&) const;
+    Offsets getDefaultOffsets(nsecs_t vsyncDuration) const;
+    Offsets getHighFpsOffsets(nsecs_t vsyncDuration) const;
+
+    const nsecs_t mThresholdForNextVsync;
+    const std::unordered_map<float, Offsets> mOffsets;
+
+    std::atomic<float> mRefreshRateFps;
+};
+
+/*
+ * Class that encapsulates the phase offsets for SurfaceFlinger and App.
+ * The offsets are calculated from durations for each one of the (late, early, earlyGL)
+ * offset types.
+ */
+class PhaseDurations : public scheduler::PhaseConfiguration {
+public:
+    PhaseDurations(const scheduler::RefreshRateConfigs&);
 
     // Returns early, early GL, and late offsets for Apps and SF for a given refresh rate.
     Offsets getOffsetsForRefreshRate(float fps) const override;
@@ -68,14 +104,28 @@
     // Returns current offsets in human friendly format.
     void dump(std::string& result) const override;
 
+protected:
+    // Used for unit tests
+    PhaseDurations(const std::vector<float>& refreshRates, float currentFps, nsecs_t sfDuration,
+                   nsecs_t appDuration, nsecs_t sfEarlyDuration, nsecs_t appEarlyDuration,
+                   nsecs_t sfEarlyGlDuration, nsecs_t appEarlyGlDuration);
+
 private:
-    static Offsets getDefaultOffsets(nsecs_t thresholdForNextVsync);
-    static Offsets getHighFpsOffsets(nsecs_t thresholdForNextVsync);
+    std::unordered_map<float, PhaseDurations::Offsets> initializeOffsets(
+            const std::vector<float>&) const;
 
-    std::atomic<float> mRefreshRateFps = 0;
+    const nsecs_t mSfDuration;
+    const nsecs_t mAppDuration;
 
-    Offsets mDefaultOffsets;
-    Offsets mHighFpsOffsets;
+    const nsecs_t mSfEarlyDuration;
+    const nsecs_t mAppEarlyDuration;
+
+    const nsecs_t mSfEarlyGlDuration;
+    const nsecs_t mAppEarlyGlDuration;
+
+    const std::unordered_map<float, Offsets> mOffsets;
+
+    std::atomic<float> mRefreshRateFps;
 };
 
 } // namespace impl
diff --git a/services/surfaceflinger/Scheduler/Scheduler.cpp b/services/surfaceflinger/Scheduler/Scheduler.cpp
index 71a6a2f..71ebfc3 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.cpp
+++ b/services/surfaceflinger/Scheduler/Scheduler.cpp
@@ -125,18 +125,16 @@
     return *mPrimaryDispSync;
 }
 
-std::unique_ptr<VSyncSource> Scheduler::makePrimaryDispSyncSource(
-        const char* name, nsecs_t phaseOffsetNs, nsecs_t offsetThresholdForNextVsync) {
+std::unique_ptr<VSyncSource> Scheduler::makePrimaryDispSyncSource(const char* name,
+                                                                  nsecs_t phaseOffsetNs) {
     return std::make_unique<DispSyncSource>(mPrimaryDispSync.get(), phaseOffsetNs,
-                                            offsetThresholdForNextVsync, true /* traceVsync */,
-                                            name);
+                                            true /* traceVsync */, name);
 }
 
 Scheduler::ConnectionHandle Scheduler::createConnection(
-        const char* connectionName, nsecs_t phaseOffsetNs, nsecs_t offsetThresholdForNextVsync,
+        const char* connectionName, nsecs_t phaseOffsetNs,
         impl::EventThread::InterceptVSyncsCallback interceptCallback) {
-    auto vsyncSource =
-            makePrimaryDispSyncSource(connectionName, phaseOffsetNs, offsetThresholdForNextVsync);
+    auto vsyncSource = makePrimaryDispSyncSource(connectionName, phaseOffsetNs);
     auto eventThread = std::make_unique<impl::EventThread>(std::move(vsyncSource),
                                                            std::move(interceptCallback));
     return createConnection(std::move(eventThread));
diff --git a/services/surfaceflinger/Scheduler/Scheduler.h b/services/surfaceflinger/Scheduler/Scheduler.h
index 15277ce..2fa8b3f 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.h
+++ b/services/surfaceflinger/Scheduler/Scheduler.h
@@ -66,7 +66,6 @@
 
     using ConnectionHandle = scheduler::ConnectionHandle;
     ConnectionHandle createConnection(const char* connectionName, nsecs_t phaseOffsetNs,
-                                      nsecs_t offsetThresholdForNextVsync,
                                       impl::EventThread::InterceptVSyncsCallback);
 
     sp<IDisplayEventConnection> createDisplayEventConnection(ConnectionHandle,
@@ -149,8 +148,7 @@
     Scheduler(std::unique_ptr<DispSync>, std::unique_ptr<EventControlThread>,
               const scheduler::RefreshRateConfigs&, ISchedulerCallback& schedulerCallback);
 
-    std::unique_ptr<VSyncSource> makePrimaryDispSyncSource(const char* name, nsecs_t phaseOffsetNs,
-                                                           nsecs_t offsetThresholdForNextVsync);
+    std::unique_ptr<VSyncSource> makePrimaryDispSyncSource(const char* name, nsecs_t phaseOffsetNs);
 
     // Create a connection on the given EventThread.
     ConnectionHandle createConnection(std::unique_ptr<EventThread>);
diff --git a/services/surfaceflinger/Scheduler/VSyncModulator.h b/services/surfaceflinger/Scheduler/VSyncModulator.h
index 63c0feb..704a5d5 100644
--- a/services/surfaceflinger/Scheduler/VSyncModulator.h
+++ b/services/surfaceflinger/Scheduler/VSyncModulator.h
@@ -43,6 +43,10 @@
     struct Offsets {
         nsecs_t sf;
         nsecs_t app;
+
+        bool operator==(const Offsets& other) const { return sf == other.sf && app == other.app; }
+
+        bool operator!=(const Offsets& other) const { return !(*this == other); }
     };
 
     struct OffsetsConfig {
@@ -50,7 +54,11 @@
         Offsets earlyGl; // As above but while compositing with GL.
         Offsets late;    // Default.
 
-        nsecs_t thresholdForNextVsync;
+        bool operator==(const OffsetsConfig& other) const {
+            return early == other.early && earlyGl == other.earlyGl && late == other.late;
+        }
+
+        bool operator!=(const OffsetsConfig& other) const { return !(*this == other); }
     };
 
     VSyncModulator(Scheduler&, ConnectionHandle appConnectionHandle,