1 files changed, 0 insertions, 145 deletions
diff --git a/services/surfaceflinger/Scheduler/VsyncModulator.h b/services/surfaceflinger/Scheduler/VsyncModulator.h
deleted file mode 100644
index b2b0451666..0000000000
--- a/services/surfaceflinger/Scheduler/VsyncModulator.h
+++ /dev/null
@@ -1,145 +0,0 @@
-/*
- * Copyright 2018 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.
- */
-
-#pragma once
-
-#include <chrono>
-#include <mutex>
-#include <optional>
-#include <unordered_set>
-
-#include <android-base/thread_annotations.h>
-#include <binder/IBinder.h>
-#include <utils/Timers.h>
-
-namespace android::scheduler {
-
-// State machine controlled by transaction flags. VsyncModulator switches to early phase offsets
-// when a transaction is flagged EarlyStart or Early, lasting until an EarlyEnd transaction or a
-// fixed number of frames, respectively.
-enum class TransactionSchedule {
-    Late,  // Default.
-    EarlyStart,
-    EarlyEnd
-};
-
-// Modulates VSYNC phase depending on transaction schedule and refresh rate changes.
-class VsyncModulator : public IBinder::DeathRecipient {
-public:
-    // Number of frames to keep early offsets after an early transaction or GPU composition.
-    // This acts as a low-pass filter in case subsequent transactions are delayed, or if the
-    // composition strategy alternates on subsequent frames.
-    static constexpr int MIN_EARLY_TRANSACTION_FRAMES = 2;
-    static constexpr int MIN_EARLY_GPU_FRAMES = 2;
-
-    // Duration to delay the MIN_EARLY_TRANSACTION_FRAMES countdown after an early transaction.
-    // This may keep early offsets for an extra frame, but avoids a race with transaction commit.
-    static const std::chrono::nanoseconds MIN_EARLY_TRANSACTION_TIME;
-
-    // Phase offsets and work durations for SF and app deadlines from VSYNC.
-    struct VsyncConfig {
-        nsecs_t sfOffset;
-        nsecs_t appOffset;
-        std::chrono::nanoseconds sfWorkDuration;
-        std::chrono::nanoseconds appWorkDuration;
-
-        bool operator==(const VsyncConfig& other) const {
-            return sfOffset == other.sfOffset && appOffset == other.appOffset &&
-                    sfWorkDuration == other.sfWorkDuration &&
-                    appWorkDuration == other.appWorkDuration;
-        }
-
-        bool operator!=(const VsyncConfig& other) const { return !(*this == other); }
-    };
-
-    using VsyncConfigOpt = std::optional<VsyncConfig>;
-
-    struct VsyncConfigSet {
-        VsyncConfig early;    // Used for early transactions, and during refresh rate change.
-        VsyncConfig earlyGpu; // Used during GPU composition.
-        VsyncConfig late;     // Default.
-        std::chrono::nanoseconds hwcMinWorkDuration; // Used for calculating the
-                                                     // earliest present time
-
-        bool operator==(const VsyncConfigSet& other) const {
-            return early == other.early && earlyGpu == other.earlyGpu && late == other.late &&
-                    hwcMinWorkDuration == other.hwcMinWorkDuration;
-        }
-
-        bool operator!=(const VsyncConfigSet& other) const { return !(*this == other); }
-    };
-
-    using Clock = std::chrono::steady_clock;
-    using TimePoint = Clock::time_point;
-    using Now = TimePoint (*)();
-
-    explicit VsyncModulator(const VsyncConfigSet&, Now = Clock::now);
-
-    VsyncConfig getVsyncConfig() const EXCLUDES(mMutex);
-
-    [[nodiscard]] VsyncConfig setVsyncConfigSet(const VsyncConfigSet&) EXCLUDES(mMutex);
-
-    // Changes offsets in response to transaction flags or commit.
-    [[nodiscard]] VsyncConfigOpt setTransactionSchedule(TransactionSchedule,
-                                                        const sp<IBinder>& = {}) EXCLUDES(mMutex);
-    [[nodiscard]] VsyncConfigOpt onTransactionCommit();
-
-    // Called when we send a refresh rate change to hardware composer, so that
-    // we can move into early offsets.
-    [[nodiscard]] VsyncConfigOpt onRefreshRateChangeInitiated();
-
-    // Called when we detect from VSYNC signals that the refresh rate changed.
-    // This way we can move out of early offsets if no longer necessary.
-    [[nodiscard]] VsyncConfigOpt onRefreshRateChangeCompleted();
-
-    [[nodiscard]] VsyncConfigOpt onDisplayRefresh(bool usedGpuComposition);
-
-protected:
-    // Called from unit tests as well
-    void binderDied(const wp<IBinder>&) override EXCLUDES(mMutex);
-
-private:
-    const VsyncConfig& getNextVsyncConfig() const REQUIRES(mMutex);
-    [[nodiscard]] VsyncConfig updateVsyncConfig() EXCLUDES(mMutex);
-    [[nodiscard]] VsyncConfig updateVsyncConfigLocked() REQUIRES(mMutex);
-
-    mutable std::mutex mMutex;
-    VsyncConfigSet mVsyncConfigSet GUARDED_BY(mMutex);
-
-    VsyncConfig mVsyncConfig GUARDED_BY(mMutex){mVsyncConfigSet.late};
-
-    using Schedule = TransactionSchedule;
-    std::atomic<Schedule> mTransactionSchedule = Schedule::Late;
-
-    struct WpHash {
-        size_t operator()(const wp<IBinder>& p) const {
-            return std::hash<IBinder*>()(p.unsafe_get());
-        }
-    };
-
-    std::unordered_set<wp<IBinder>, WpHash> mEarlyWakeupRequests GUARDED_BY(mMutex);
-    std::atomic<bool> mRefreshRateChangePending = false;
-
-    std::atomic<int> mEarlyTransactionFrames = 0;
-    std::atomic<int> mEarlyGpuFrames = 0;
-    std::atomic<TimePoint> mEarlyTransactionStartTime = TimePoint();
-    std::atomic<TimePoint> mLastTransactionCommitTime = TimePoint();
-
-    const Now mNow;
-    const bool mTraceDetailedInfo;
-};
-
-} // namespace android::scheduler