diff --git a/cmds/installd/otapreopt_chroot.cpp b/cmds/installd/otapreopt_chroot.cpp
index 609ddaf..670abea 100644
--- a/cmds/installd/otapreopt_chroot.cpp
+++ b/cmds/installd/otapreopt_chroot.cpp
@@ -80,8 +80,6 @@
     // system/apex/apexd/apexd_main.cpp.
     //
     // Only scan the APEX directory under /system (within the chroot dir).
-    // Note that this leaves around the loop devices created and used by
-    // libapexd's code, but this is fine, as we expect to reboot soon after.
     apex::scanPackagesDirAndActivate(apex::kApexPackageSystemDir);
     return apex::getActivePackages();
 }
diff --git a/libs/binder/include/binder/IInterface.h b/libs/binder/include/binder/IInterface.h
index f6381f7..0d30560 100644
--- a/libs/binder/include/binder/IInterface.h
+++ b/libs/binder/include/binder/IInterface.h
@@ -54,6 +54,7 @@
     virtual const String16&     getInterfaceDescriptor() const;
 
 protected:
+    typedef INTERFACE           BaseInterface;
     virtual IBinder*            onAsBinder();
 };
 
@@ -66,6 +67,7 @@
     explicit                    BpInterface(const sp<IBinder>& remote);
 
 protected:
+    typedef INTERFACE           BaseInterface;
     virtual IBinder*            onAsBinder();
 };
 
diff --git a/libs/ui/BufferHubBuffer.cpp b/libs/ui/BufferHubBuffer.cpp
index 4b20772..7693fcb 100644
--- a/libs/ui/BufferHubBuffer.cpp
+++ b/libs/ui/BufferHubBuffer.cpp
@@ -24,12 +24,12 @@
 #include <utils/Trace.h>
 
 using ::android::base::unique_fd;
-using ::android::BufferHubDefs::AnyClientAcquired;
-using ::android::BufferHubDefs::AnyClientGained;
-using ::android::BufferHubDefs::IsClientAcquired;
-using ::android::BufferHubDefs::IsClientGained;
-using ::android::BufferHubDefs::IsClientPosted;
-using ::android::BufferHubDefs::IsClientReleased;
+using ::android::BufferHubDefs::isAnyClientAcquired;
+using ::android::BufferHubDefs::isAnyClientGained;
+using ::android::BufferHubDefs::isClientAcquired;
+using ::android::BufferHubDefs::isClientGained;
+using ::android::BufferHubDefs::isClientPosted;
+using ::android::BufferHubDefs::isClientReleased;
 using ::android::frameworks::bufferhub::V1_0::BufferHubStatus;
 using ::android::frameworks::bufferhub::V1_0::BufferTraits;
 using ::android::frameworks::bufferhub::V1_0::IBufferClient;
@@ -39,22 +39,22 @@
 
 namespace android {
 
-std::unique_ptr<BufferHubBuffer> BufferHubBuffer::Create(uint32_t width, uint32_t height,
+std::unique_ptr<BufferHubBuffer> BufferHubBuffer::create(uint32_t width, uint32_t height,
                                                          uint32_t layerCount, uint32_t format,
                                                          uint64_t usage, size_t userMetadataSize) {
     auto buffer = std::unique_ptr<BufferHubBuffer>(
             new BufferHubBuffer(width, height, layerCount, format, usage, userMetadataSize));
-    return buffer->IsValid() ? std::move(buffer) : nullptr;
+    return buffer->isValid() ? std::move(buffer) : nullptr;
 }
 
-std::unique_ptr<BufferHubBuffer> BufferHubBuffer::Import(const native_handle_t* token) {
+std::unique_ptr<BufferHubBuffer> BufferHubBuffer::import(const native_handle_t* token) {
     if (token == nullptr) {
         ALOGE("%s: token cannot be nullptr!", __FUNCTION__);
         return nullptr;
     }
 
     auto buffer = std::unique_ptr<BufferHubBuffer>(new BufferHubBuffer(token));
-    return buffer->IsValid() ? std::move(buffer) : nullptr;
+    return buffer->isValid() ? std::move(buffer) : nullptr;
 }
 
 BufferHubBuffer::BufferHubBuffer(uint32_t width, uint32_t height, uint32_t layerCount,
@@ -169,8 +169,8 @@
 
     // Import fds. Dup fds because hidl_handle owns the fds.
     unique_fd ashmemFd(fcntl(bufferTraits.bufferInfo->data[0], F_DUPFD_CLOEXEC, 0));
-    mMetadata = BufferHubMetadata::Import(std::move(ashmemFd));
-    if (!mMetadata.IsValid()) {
+    mMetadata = BufferHubMetadata::import(std::move(ashmemFd));
+    if (!mMetadata.isValid()) {
         ALOGE("%s: Received an invalid metadata.", __FUNCTION__);
         return -EINVAL;
     }
@@ -196,29 +196,29 @@
 
     uint32_t userMetadataSize;
     memcpy(&userMetadataSize, &bufferTraits.bufferInfo->data[4], sizeof(userMetadataSize));
-    if (mMetadata.user_metadata_size() != userMetadataSize) {
+    if (mMetadata.userMetadataSize() != userMetadataSize) {
         ALOGE("%s: user metadata size not match: expected %u, actual %zu.", __FUNCTION__,
-              userMetadataSize, mMetadata.user_metadata_size());
+              userMetadataSize, mMetadata.userMetadataSize());
         return -EINVAL;
     }
 
-    size_t metadataSize = static_cast<size_t>(mMetadata.metadata_size());
+    size_t metadataSize = static_cast<size_t>(mMetadata.metadataSize());
     if (metadataSize < BufferHubDefs::kMetadataHeaderSize) {
         ALOGE("%s: metadata too small: %zu", __FUNCTION__, metadataSize);
         return -EINVAL;
     }
 
     // Populate shortcuts to the atomics in metadata.
-    auto metadata_header = mMetadata.metadata_header();
-    buffer_state_ = &metadata_header->buffer_state;
-    fence_state_ = &metadata_header->fence_state;
-    active_clients_bit_mask_ = &metadata_header->active_clients_bit_mask;
+    auto metadata_header = mMetadata.metadataHeader();
+    mBufferState = &metadata_header->buffer_state;
+    mFenceState = &metadata_header->fence_state;
+    mActiveClientsBitMask = &metadata_header->active_clients_bit_mask;
     // The C++ standard recommends (but does not require) that lock-free atomic operations are
     // also address-free, that is, suitable for communication between processes using shared
     // memory.
-    LOG_ALWAYS_FATAL_IF(!std::atomic_is_lock_free(buffer_state_) ||
-                                !std::atomic_is_lock_free(fence_state_) ||
-                                !std::atomic_is_lock_free(active_clients_bit_mask_),
+    LOG_ALWAYS_FATAL_IF(!std::atomic_is_lock_free(mBufferState) ||
+                                !std::atomic_is_lock_free(mFenceState) ||
+                                !std::atomic_is_lock_free(mActiveClientsBitMask),
                         "Atomic variables in ashmen are not lock free.");
 
     // Import the buffer: We only need to hold on the native_handle_t here so that
@@ -231,104 +231,104 @@
 
     // TODO(b/112012161) Set up shared fences.
     ALOGD("%s: id=%d, buffer_state=%" PRIx32 ".", __FUNCTION__, mId,
-          buffer_state_->load(std::memory_order_acquire));
+          mBufferState->load(std::memory_order_acquire));
     return 0;
 }
 
-int BufferHubBuffer::Gain() {
-    uint32_t current_buffer_state = buffer_state_->load(std::memory_order_acquire);
-    if (IsClientGained(current_buffer_state, mClientStateMask)) {
+int BufferHubBuffer::gain() {
+    uint32_t currentBufferState = mBufferState->load(std::memory_order_acquire);
+    if (isClientGained(currentBufferState, mClientStateMask)) {
         ALOGV("%s: Buffer is already gained by this client %" PRIx32 ".", __FUNCTION__,
               mClientStateMask);
         return 0;
     }
     do {
-        if (AnyClientGained(current_buffer_state & (~mClientStateMask)) ||
-            AnyClientAcquired(current_buffer_state)) {
+        if (isAnyClientGained(currentBufferState & (~mClientStateMask)) ||
+            isAnyClientAcquired(currentBufferState)) {
             ALOGE("%s: Buffer is in use, id=%d mClientStateMask=%" PRIx32 " state=%" PRIx32 ".",
-                  __FUNCTION__, mId, mClientStateMask, current_buffer_state);
+                  __FUNCTION__, mId, mClientStateMask, currentBufferState);
             return -EBUSY;
         }
         // Change the buffer state to gained state, whose value happens to be the same as
         // mClientStateMask.
-    } while (!buffer_state_->compare_exchange_weak(current_buffer_state, mClientStateMask,
-                                                   std::memory_order_acq_rel,
-                                                   std::memory_order_acquire));
+    } while (!mBufferState->compare_exchange_weak(currentBufferState, mClientStateMask,
+                                                  std::memory_order_acq_rel,
+                                                  std::memory_order_acquire));
     // TODO(b/119837586): Update fence state and return GPU fence.
     return 0;
 }
 
-int BufferHubBuffer::Post() {
-    uint32_t current_buffer_state = buffer_state_->load(std::memory_order_acquire);
-    uint32_t updated_buffer_state = (~mClientStateMask) & BufferHubDefs::kHighBitsMask;
+int BufferHubBuffer::post() {
+    uint32_t currentBufferState = mBufferState->load(std::memory_order_acquire);
+    uint32_t updatedBufferState = (~mClientStateMask) & BufferHubDefs::kHighBitsMask;
     do {
-        if (!IsClientGained(current_buffer_state, mClientStateMask)) {
+        if (!isClientGained(currentBufferState, mClientStateMask)) {
             ALOGE("%s: Cannot post a buffer that is not gained by this client. buffer_id=%d "
                   "mClientStateMask=%" PRIx32 " state=%" PRIx32 ".",
-                  __FUNCTION__, mId, mClientStateMask, current_buffer_state);
+                  __FUNCTION__, mId, mClientStateMask, currentBufferState);
             return -EBUSY;
         }
         // Set the producer client buffer state to released, other clients' buffer state to posted.
         // Post to all existing and non-existing clients.
-    } while (!buffer_state_->compare_exchange_weak(current_buffer_state, updated_buffer_state,
-                                                   std::memory_order_acq_rel,
-                                                   std::memory_order_acquire));
+    } while (!mBufferState->compare_exchange_weak(currentBufferState, updatedBufferState,
+                                                  std::memory_order_acq_rel,
+                                                  std::memory_order_acquire));
     // TODO(b/119837586): Update fence state and return GPU fence if needed.
     return 0;
 }
 
-int BufferHubBuffer::Acquire() {
-    uint32_t current_buffer_state = buffer_state_->load(std::memory_order_acquire);
-    if (IsClientAcquired(current_buffer_state, mClientStateMask)) {
+int BufferHubBuffer::acquire() {
+    uint32_t currentBufferState = mBufferState->load(std::memory_order_acquire);
+    if (isClientAcquired(currentBufferState, mClientStateMask)) {
         ALOGV("%s: Buffer is already acquired by this client %" PRIx32 ".", __FUNCTION__,
               mClientStateMask);
         return 0;
     }
-    uint32_t updated_buffer_state = 0U;
+    uint32_t updatedBufferState = 0U;
     do {
-        if (!IsClientPosted(current_buffer_state, mClientStateMask)) {
+        if (!isClientPosted(currentBufferState, mClientStateMask)) {
             ALOGE("%s: Cannot acquire a buffer that is not in posted state. buffer_id=%d "
                   "mClientStateMask=%" PRIx32 " state=%" PRIx32 ".",
-                  __FUNCTION__, mId, mClientStateMask, current_buffer_state);
+                  __FUNCTION__, mId, mClientStateMask, currentBufferState);
             return -EBUSY;
         }
         // Change the buffer state for this consumer from posted to acquired.
-        updated_buffer_state = current_buffer_state ^ mClientStateMask;
-    } while (!buffer_state_->compare_exchange_weak(current_buffer_state, updated_buffer_state,
-                                                   std::memory_order_acq_rel,
-                                                   std::memory_order_acquire));
+        updatedBufferState = currentBufferState ^ mClientStateMask;
+    } while (!mBufferState->compare_exchange_weak(currentBufferState, updatedBufferState,
+                                                  std::memory_order_acq_rel,
+                                                  std::memory_order_acquire));
     // TODO(b/119837586): Update fence state and return GPU fence.
     return 0;
 }
 
-int BufferHubBuffer::Release() {
-    uint32_t current_buffer_state = buffer_state_->load(std::memory_order_acquire);
-    if (IsClientReleased(current_buffer_state, mClientStateMask)) {
+int BufferHubBuffer::release() {
+    uint32_t currentBufferState = mBufferState->load(std::memory_order_acquire);
+    if (isClientReleased(currentBufferState, mClientStateMask)) {
         ALOGV("%s: Buffer is already released by this client %" PRIx32 ".", __FUNCTION__,
               mClientStateMask);
         return 0;
     }
-    uint32_t updated_buffer_state = 0U;
+    uint32_t updatedBufferState = 0U;
     do {
-        updated_buffer_state = current_buffer_state & (~mClientStateMask);
-    } while (!buffer_state_->compare_exchange_weak(current_buffer_state, updated_buffer_state,
-                                                   std::memory_order_acq_rel,
-                                                   std::memory_order_acquire));
+        updatedBufferState = currentBufferState & (~mClientStateMask);
+    } while (!mBufferState->compare_exchange_weak(currentBufferState, updatedBufferState,
+                                                  std::memory_order_acq_rel,
+                                                  std::memory_order_acquire));
     // TODO(b/119837586): Update fence state and return GPU fence if needed.
     return 0;
 }
 
-bool BufferHubBuffer::IsReleased() const {
-    return (buffer_state_->load(std::memory_order_acquire) &
-            active_clients_bit_mask_->load(std::memory_order_acquire)) == 0;
+bool BufferHubBuffer::isReleased() const {
+    return (mBufferState->load(std::memory_order_acquire) &
+            mActiveClientsBitMask->load(std::memory_order_acquire)) == 0;
 }
 
-bool BufferHubBuffer::IsValid() const {
+bool BufferHubBuffer::isValid() const {
     return mBufferHandle.getNativeHandle() != nullptr && mId >= 0 && mClientStateMask != 0U &&
-            mEventFd.get() >= 0 && mMetadata.IsValid() && mBufferClient != nullptr;
+            mEventFd.get() >= 0 && mMetadata.isValid() && mBufferClient != nullptr;
 }
 
-native_handle_t* BufferHubBuffer::Duplicate() {
+native_handle_t* BufferHubBuffer::duplicate() {
     if (mBufferClient == nullptr) {
         ALOGE("%s: missing BufferClient!", __FUNCTION__);
         return nullptr;
diff --git a/libs/ui/BufferHubMetadata.cpp b/libs/ui/BufferHubMetadata.cpp
index 816707d..05bc7dd 100644
--- a/libs/ui/BufferHubMetadata.cpp
+++ b/libs/ui/BufferHubMetadata.cpp
@@ -34,7 +34,7 @@
 using BufferHubDefs::MetadataHeader;
 
 /* static */
-BufferHubMetadata BufferHubMetadata::Create(size_t userMetadataSize) {
+BufferHubMetadata BufferHubMetadata::create(size_t userMetadataSize) {
     // The size the of metadata buffer is used as the "width" parameter during allocation. Thus it
     // cannot overflow uint32_t.
     if (userMetadataSize >= (std::numeric_limits<uint32_t>::max() - kMetadataHeaderSize)) {
@@ -59,11 +59,11 @@
         return {};
     }
 
-    return BufferHubMetadata::Import(std::move(ashmemFd));
+    return BufferHubMetadata::import(std::move(ashmemFd));
 }
 
 /* static */
-BufferHubMetadata BufferHubMetadata::Import(unique_fd ashmemFd) {
+BufferHubMetadata BufferHubMetadata::import(unique_fd ashmemFd) {
     if (!ashmem_valid(ashmemFd.get())) {
         ALOGE("BufferHubMetadata::Import: invalid ashmem fd.");
         return {};
@@ -94,7 +94,7 @@
 
 BufferHubMetadata::~BufferHubMetadata() {
     if (mMetadataHeader != nullptr) {
-        int ret = munmap(mMetadataHeader, metadata_size());
+        int ret = munmap(mMetadataHeader, metadataSize());
         ALOGE_IF(ret != 0,
                  "BufferHubMetadata::~BufferHubMetadata: failed to unmap ashmem, error=%d.", errno);
         mMetadataHeader = nullptr;
diff --git a/libs/ui/GraphicBuffer.cpp b/libs/ui/GraphicBuffer.cpp
index 41ae253..f487dfa 100644
--- a/libs/ui/GraphicBuffer.cpp
+++ b/libs/ui/GraphicBuffer.cpp
@@ -100,7 +100,7 @@
         return;
     }
 
-    mInitCheck = initWithHandle(buffer->DuplicateHandle(), /*method=*/TAKE_UNREGISTERED_HANDLE,
+    mInitCheck = initWithHandle(buffer->duplicateHandle(), /*method=*/TAKE_UNREGISTERED_HANDLE,
                                 buffer->desc().width, buffer->desc().height,
                                 static_cast<PixelFormat>(buffer->desc().format),
                                 buffer->desc().layers, buffer->desc().usage, buffer->desc().stride);
diff --git a/libs/ui/include/ui/BufferHubBuffer.h b/libs/ui/include/ui/BufferHubBuffer.h
index 0b6d75a..eac8c84 100644
--- a/libs/ui/include/ui/BufferHubBuffer.h
+++ b/libs/ui/include/ui/BufferHubBuffer.h
@@ -29,14 +29,14 @@
 class BufferHubBuffer {
 public:
     // Allocates a standalone BufferHubBuffer.
-    static std::unique_ptr<BufferHubBuffer> Create(uint32_t width, uint32_t height,
+    static std::unique_ptr<BufferHubBuffer> create(uint32_t width, uint32_t height,
                                                    uint32_t layerCount, uint32_t format,
                                                    uint64_t usage, size_t userMetadataSize);
 
     // Imports the given token to a BufferHubBuffer. Not taking ownership of the token. Caller
     // should close and destroy the token after calling this function regardless of output.
     // TODO(b/122543147): use a movable wrapper for token
-    static std::unique_ptr<BufferHubBuffer> Import(const native_handle_t* token);
+    static std::unique_ptr<BufferHubBuffer> import(const native_handle_t* token);
 
     BufferHubBuffer(const BufferHubBuffer&) = delete;
     void operator=(const BufferHubBuffer&) = delete;
@@ -52,51 +52,51 @@
 
     // Duplicate the underlying Gralloc buffer handle. Caller is responsible to free the handle
     // after use.
-    native_handle_t* DuplicateHandle() {
+    native_handle_t* duplicateHandle() {
         return native_handle_clone(mBufferHandle.getNativeHandle());
     }
 
     const BufferHubEventFd& eventFd() const { return mEventFd; }
 
     // Returns the current value of MetadataHeader::buffer_state.
-    uint32_t buffer_state() const { return buffer_state_->load(std::memory_order_acquire); }
+    uint32_t bufferState() const { return mBufferState->load(std::memory_order_acquire); }
 
     // A state mask which is unique to a buffer hub client among all its siblings sharing the same
     // concrete graphic buffer.
-    uint32_t client_state_mask() const { return mClientStateMask; }
+    uint32_t clientStateMask() const { return mClientStateMask; }
 
-    size_t user_metadata_size() const { return mMetadata.user_metadata_size(); }
+    size_t userMetadataSize() const { return mMetadata.userMetadataSize(); }
 
     // Returns true if the BufferClient is still alive.
-    bool IsConnected() const { return mBufferClient->ping().isOk(); }
+    bool isConnected() const { return mBufferClient->ping().isOk(); }
 
     // Returns true if the buffer is valid: non-null buffer handle, valid id, valid client bit mask,
     // valid metadata and valid buffer client
-    bool IsValid() const;
+    bool isValid() const;
 
     // Gains the buffer for exclusive write permission. Read permission is implied once a buffer is
     // gained.
     // The buffer can be gained as long as there is no other client in acquired or gained state.
-    int Gain();
+    int gain();
 
     // Posts the gained buffer for other buffer clients to use the buffer.
     // The buffer can be posted iff the buffer state for this client is gained.
     // After posting the buffer, this client is put to released state and does not have access to
     // the buffer for this cycle of the usage of the buffer.
-    int Post();
+    int post();
 
     // Acquires the buffer for shared read permission.
     // The buffer can be acquired iff the buffer state for this client is posted.
-    int Acquire();
+    int acquire();
 
     // Releases the buffer.
     // The buffer can be released from any buffer state.
     // After releasing the buffer, this client no longer have any permissions to the buffer for the
     // current cycle of the usage of the buffer.
-    int Release();
+    int release();
 
     // Returns whether the buffer is released by all active clients or not.
-    bool IsReleased() const;
+    bool isReleased() const;
 
     // Creates a token that stands for this BufferHubBuffer client and could be used for Import to
     // create another BufferHubBuffer. The new BufferHubBuffer will share the same underlying
@@ -104,7 +104,7 @@
     // should free it after use.
     // Returns a valid token on success, nullptr on failure.
     // TODO(b/122543147): use a movable wrapper for token
-    native_handle_t* Duplicate();
+    native_handle_t* duplicate();
 
 private:
     BufferHubBuffer(uint32_t width, uint32_t height, uint32_t layerCount, uint32_t format,
@@ -134,9 +134,9 @@
     // bufferhubd daemon and all buffer clients.
     BufferHubMetadata mMetadata;
     // Shortcuts to the atomics inside the header of mMetadata.
-    std::atomic<uint32_t>* buffer_state_ = nullptr;
-    std::atomic<uint32_t>* fence_state_ = nullptr;
-    std::atomic<uint32_t>* active_clients_bit_mask_ = nullptr;
+    std::atomic<uint32_t>* mBufferState = nullptr;
+    std::atomic<uint32_t>* mFenceState = nullptr;
+    std::atomic<uint32_t>* mActiveClientsBitMask = nullptr;
 
     // HwBinder backend
     sp<frameworks::bufferhub::V1_0::IBufferClient> mBufferClient;
diff --git a/libs/ui/include/ui/BufferHubDefs.h b/libs/ui/include/ui/BufferHubDefs.h
index ff970cb..722a060 100644
--- a/libs/ui/include/ui/BufferHubDefs.h
+++ b/libs/ui/include/ui/BufferHubDefs.h
@@ -63,19 +63,19 @@
 static constexpr uint32_t kFirstClientBitMask = (1U << kMaxNumberOfClients) + 1U;
 
 // Returns true if any of the client is in gained state.
-static inline bool AnyClientGained(uint32_t state) {
+static inline bool isAnyClientGained(uint32_t state) {
     uint32_t high_bits = state >> kMaxNumberOfClients;
     uint32_t low_bits = state & kLowbitsMask;
     return high_bits == low_bits && low_bits != 0U;
 }
 
 // Returns true if the input client is in gained state.
-static inline bool IsClientGained(uint32_t state, uint32_t client_bit_mask) {
+static inline bool isClientGained(uint32_t state, uint32_t client_bit_mask) {
     return state == client_bit_mask;
 }
 
 // Returns true if any of the client is in posted state.
-static inline bool AnyClientPosted(uint32_t state) {
+static inline bool isAnyClientPosted(uint32_t state) {
     uint32_t high_bits = state >> kMaxNumberOfClients;
     uint32_t low_bits = state & kLowbitsMask;
     uint32_t posted_or_acquired = high_bits ^ low_bits;
@@ -83,7 +83,7 @@
 }
 
 // Returns true if the input client is in posted state.
-static inline bool IsClientPosted(uint32_t state, uint32_t client_bit_mask) {
+static inline bool isClientPosted(uint32_t state, uint32_t client_bit_mask) {
     uint32_t client_bits = state & client_bit_mask;
     if (client_bits == 0U) return false;
     uint32_t low_bits = client_bits & kLowbitsMask;
@@ -91,7 +91,7 @@
 }
 
 // Return true if any of the client is in acquired state.
-static inline bool AnyClientAcquired(uint32_t state) {
+static inline bool isAnyClientAcquired(uint32_t state) {
     uint32_t high_bits = state >> kMaxNumberOfClients;
     uint32_t low_bits = state & kLowbitsMask;
     uint32_t posted_or_acquired = high_bits ^ low_bits;
@@ -99,7 +99,7 @@
 }
 
 // Return true if the input client is in acquired state.
-static inline bool IsClientAcquired(uint32_t state, uint32_t client_bit_mask) {
+static inline bool isClientAcquired(uint32_t state, uint32_t client_bit_mask) {
     uint32_t client_bits = state & client_bit_mask;
     if (client_bits == 0U) return false;
     uint32_t high_bits = client_bits & kHighBitsMask;
@@ -107,13 +107,13 @@
 }
 
 // Returns true if the input client is in released state.
-static inline bool IsClientReleased(uint32_t state, uint32_t client_bit_mask) {
+static inline bool isClientReleased(uint32_t state, uint32_t client_bit_mask) {
     return (state & client_bit_mask) == 0U;
 }
 
 // Returns the next available buffer client's client_state_masks.
 // @params union_bits. Union of all existing clients' client_state_masks.
-static inline uint32_t FindNextAvailableClientStateMask(uint32_t union_bits) {
+static inline uint32_t findNextAvailableClientStateMask(uint32_t union_bits) {
     uint32_t low_union = union_bits & kLowbitsMask;
     if (low_union == kLowbitsMask) return 0U;
     uint32_t incremented = low_union + 1U;
diff --git a/libs/ui/include/ui/BufferHubMetadata.h b/libs/ui/include/ui/BufferHubMetadata.h
index 2121894..3482507 100644
--- a/libs/ui/include/ui/BufferHubMetadata.h
+++ b/libs/ui/include/ui/BufferHubMetadata.h
@@ -33,12 +33,12 @@
     // @param userMetadataSize Size in bytes of the user defined metadata. The entire metadata
     //        shared memory region to be allocated is the size of canonical
     //        BufferHubDefs::MetadataHeader plus userMetadataSize.
-    static BufferHubMetadata Create(size_t userMetadataSize);
+    static BufferHubMetadata create(size_t userMetadataSize);
 
     // Imports an existing BufferHubMetadata from an ashmem FD.
     //
     // @param ashmemFd Ashmem file descriptor representing an ashmem region.
-    static BufferHubMetadata Import(unique_fd ashmemFd);
+    static BufferHubMetadata import(unique_fd ashmemFd);
 
     BufferHubMetadata() = default;
 
@@ -63,13 +63,13 @@
 
     // Returns true if the metadata is valid, i.e. the metadata has a valid ashmem fd and the ashmem
     // has been mapped into virtual address space.
-    bool IsValid() const { return mAshmemFd.get() != -1 && mMetadataHeader != nullptr; }
+    bool isValid() const { return mAshmemFd.get() != -1 && mMetadataHeader != nullptr; }
 
-    size_t user_metadata_size() const { return mUserMetadataSize; }
-    size_t metadata_size() const { return mUserMetadataSize + BufferHubDefs::kMetadataHeaderSize; }
+    size_t userMetadataSize() const { return mUserMetadataSize; }
+    size_t metadataSize() const { return mUserMetadataSize + BufferHubDefs::kMetadataHeaderSize; }
 
-    const unique_fd& ashmem_fd() const { return mAshmemFd; }
-    BufferHubDefs::MetadataHeader* metadata_header() { return mMetadataHeader; }
+    const unique_fd& ashmemFd() const { return mAshmemFd; }
+    BufferHubDefs::MetadataHeader* metadataHeader() { return mMetadataHeader; }
 
 private:
     BufferHubMetadata(size_t userMetadataSize, unique_fd ashmemFd,
diff --git a/libs/ui/tests/BufferHubBuffer_test.cpp b/libs/ui/tests/BufferHubBuffer_test.cpp
index 3bcd935..3087a90 100644
--- a/libs/ui/tests/BufferHubBuffer_test.cpp
+++ b/libs/ui/tests/BufferHubBuffer_test.cpp
@@ -32,13 +32,13 @@
 
 namespace {
 
-using ::android::BufferHubDefs::AnyClientAcquired;
-using ::android::BufferHubDefs::AnyClientGained;
-using ::android::BufferHubDefs::AnyClientPosted;
-using ::android::BufferHubDefs::IsClientAcquired;
-using ::android::BufferHubDefs::IsClientGained;
-using ::android::BufferHubDefs::IsClientPosted;
-using ::android::BufferHubDefs::IsClientReleased;
+using ::android::BufferHubDefs::isAnyClientAcquired;
+using ::android::BufferHubDefs::isAnyClientGained;
+using ::android::BufferHubDefs::isAnyClientPosted;
+using ::android::BufferHubDefs::isClientAcquired;
+using ::android::BufferHubDefs::isClientGained;
+using ::android::BufferHubDefs::isClientPosted;
+using ::android::BufferHubDefs::isClientReleased;
 using ::android::BufferHubDefs::kMetadataHeaderSize;
 using ::testing::IsNull;
 using ::testing::NotNull;
@@ -81,88 +81,88 @@
 };
 
 void BufferHubBufferStateTransitionTest::CreateTwoClientsOfABuffer() {
-    b1 = BufferHubBuffer::Create(kWidth, kHeight, kLayerCount, kFormat, kUsage, kUserMetadataSize);
+    b1 = BufferHubBuffer::create(kWidth, kHeight, kLayerCount, kFormat, kUsage, kUserMetadataSize);
     ASSERT_THAT(b1, NotNull());
-    b1ClientMask = b1->client_state_mask();
+    b1ClientMask = b1->clientStateMask();
     ASSERT_NE(b1ClientMask, 0U);
 
-    native_handle_t* token = b1->Duplicate();
+    native_handle_t* token = b1->duplicate();
     ASSERT_THAT(token, NotNull());
 
     // TODO(b/122543147): use a movalbe wrapper for token
-    b2 = BufferHubBuffer::Import(token);
+    b2 = BufferHubBuffer::import(token);
     native_handle_close(token);
     native_handle_delete(token);
     ASSERT_THAT(b2, NotNull());
 
-    b2ClientMask = b2->client_state_mask();
+    b2ClientMask = b2->clientStateMask();
     ASSERT_NE(b2ClientMask, 0U);
     ASSERT_NE(b2ClientMask, b1ClientMask);
 }
 
 TEST_F(BufferHubBufferTest, CreateBufferFails) {
     // Buffer Creation will fail: BLOB format requires height to be 1.
-    auto b1 = BufferHubBuffer::Create(kWidth, /*height=*/2, kLayerCount,
+    auto b1 = BufferHubBuffer::create(kWidth, /*height=*/2, kLayerCount,
                                       /*format=*/HAL_PIXEL_FORMAT_BLOB, kUsage, kUserMetadataSize);
 
     EXPECT_THAT(b1, IsNull());
 
     // Buffer Creation will fail: user metadata size too large.
-    auto b2 = BufferHubBuffer::Create(kWidth, kHeight, kLayerCount, kFormat, kUsage,
+    auto b2 = BufferHubBuffer::create(kWidth, kHeight, kLayerCount, kFormat, kUsage,
                                       /*userMetadataSize=*/std::numeric_limits<size_t>::max());
 
     EXPECT_THAT(b2, IsNull());
 
     // Buffer Creation will fail: user metadata size too large.
     const size_t userMetadataSize = std::numeric_limits<size_t>::max() - kMetadataHeaderSize;
-    auto b3 = BufferHubBuffer::Create(kWidth, kHeight, kLayerCount, kFormat, kUsage,
+    auto b3 = BufferHubBuffer::create(kWidth, kHeight, kLayerCount, kFormat, kUsage,
                                       userMetadataSize);
 
     EXPECT_THAT(b3, IsNull());
 }
 
 TEST_F(BufferHubBufferTest, CreateBuffer) {
-    auto b1 = BufferHubBuffer::Create(kWidth, kHeight, kLayerCount, kFormat, kUsage,
+    auto b1 = BufferHubBuffer::create(kWidth, kHeight, kLayerCount, kFormat, kUsage,
                                       kUserMetadataSize);
     ASSERT_THAT(b1, NotNull());
-    EXPECT_TRUE(b1->IsConnected());
-    EXPECT_TRUE(b1->IsValid());
+    EXPECT_TRUE(b1->isConnected());
+    EXPECT_TRUE(b1->isValid());
     EXPECT_TRUE(cmpAHardwareBufferDesc(b1->desc(), kDesc));
-    EXPECT_EQ(b1->user_metadata_size(), kUserMetadataSize);
+    EXPECT_EQ(b1->userMetadataSize(), kUserMetadataSize);
 }
 
 TEST_F(BufferHubBufferTest, DuplicateAndImportBuffer) {
-    auto b1 = BufferHubBuffer::Create(kWidth, kHeight, kLayerCount, kFormat, kUsage,
+    auto b1 = BufferHubBuffer::create(kWidth, kHeight, kLayerCount, kFormat, kUsage,
                                       kUserMetadataSize);
     ASSERT_THAT(b1, NotNull());
-    EXPECT_TRUE(b1->IsValid());
+    EXPECT_TRUE(b1->isValid());
 
-    native_handle_t* token = b1->Duplicate();
+    native_handle_t* token = b1->duplicate();
     EXPECT_TRUE(token);
 
     // The detached buffer should still be valid.
-    EXPECT_TRUE(b1->IsConnected());
-    EXPECT_TRUE(b1->IsValid());
+    EXPECT_TRUE(b1->isConnected());
+    EXPECT_TRUE(b1->isValid());
 
-    std::unique_ptr<BufferHubBuffer> b2 = BufferHubBuffer::Import(token);
+    std::unique_ptr<BufferHubBuffer> b2 = BufferHubBuffer::import(token);
     native_handle_close(token);
     native_handle_delete(token);
 
     ASSERT_THAT(b2, NotNull());
-    EXPECT_TRUE(b2->IsValid());
+    EXPECT_TRUE(b2->isValid());
 
     EXPECT_TRUE(cmpAHardwareBufferDesc(b1->desc(), b2->desc()));
-    EXPECT_EQ(b1->user_metadata_size(), b2->user_metadata_size());
+    EXPECT_EQ(b1->userMetadataSize(), b2->userMetadataSize());
 
     // These two buffer instances are based on the same physical buffer under the
     // hood, so they should share the same id.
     EXPECT_EQ(b1->id(), b2->id());
-    // We use client_state_mask() to tell those two instances apart.
-    EXPECT_NE(b1->client_state_mask(), b2->client_state_mask());
+    // We use clientStateMask() to tell those two instances apart.
+    EXPECT_NE(b1->clientStateMask(), b2->clientStateMask());
 
     // Both buffer instances should be in released state currently.
-    EXPECT_TRUE(b1->IsReleased());
-    EXPECT_TRUE(b2->IsReleased());
+    EXPECT_TRUE(b1->isReleased());
+    EXPECT_TRUE(b2->isReleased());
 
     // The event fd should behave like duped event fds.
     const BufferHubEventFd& eventFd1 = b1->eventFd();
@@ -192,19 +192,19 @@
 }
 
 TEST_F(BufferHubBufferTest, ImportFreedBuffer) {
-    auto b1 = BufferHubBuffer::Create(kWidth, kHeight, kLayerCount, kFormat, kUsage,
+    auto b1 = BufferHubBuffer::create(kWidth, kHeight, kLayerCount, kFormat, kUsage,
                                       kUserMetadataSize);
     ASSERT_THAT(b1, NotNull());
-    EXPECT_TRUE(b1->IsValid());
+    EXPECT_TRUE(b1->isValid());
 
-    native_handle_t* token = b1->Duplicate();
+    native_handle_t* token = b1->duplicate();
     EXPECT_TRUE(token);
 
     // Explicitly destroy b1. Backend buffer should be freed and token becomes invalid
     b1.reset();
 
     // TODO(b/122543147): use a movalbe wrapper for token
-    std::unique_ptr<BufferHubBuffer> b2 = BufferHubBuffer::Import(token);
+    std::unique_ptr<BufferHubBuffer> b2 = BufferHubBuffer::import(token);
     native_handle_close(token);
     native_handle_delete(token);
 
@@ -214,7 +214,7 @@
 
 // nullptr must not crash the service
 TEST_F(BufferHubBufferTest, ImportNullToken) {
-    auto b1 = BufferHubBuffer::Import(nullptr);
+    auto b1 = BufferHubBuffer::import(nullptr);
     EXPECT_THAT(b1, IsNull());
 }
 
@@ -222,185 +222,185 @@
     native_handle_t* token = native_handle_create(/*numFds=*/0, /*numInts=*/1);
     token->data[0] = 0;
 
-    auto b1 = BufferHubBuffer::Import(token);
+    auto b1 = BufferHubBuffer::import(token);
     native_handle_delete(token);
 
     EXPECT_THAT(b1, IsNull());
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, GainBuffer_fromReleasedState) {
-    ASSERT_TRUE(b1->IsReleased());
+    ASSERT_TRUE(b1->isReleased());
 
     // Successful gaining the buffer should change the buffer state bit of b1 to
     // gained state, other client state bits to released state.
-    EXPECT_EQ(b1->Gain(), 0);
-    EXPECT_TRUE(IsClientGained(b1->buffer_state(), b1ClientMask));
+    EXPECT_EQ(b1->gain(), 0);
+    EXPECT_TRUE(isClientGained(b1->bufferState(), b1ClientMask));
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, GainBuffer_fromGainedState) {
-    ASSERT_EQ(b1->Gain(), 0);
-    auto current_buffer_state = b1->buffer_state();
-    ASSERT_TRUE(IsClientGained(current_buffer_state, b1ClientMask));
+    ASSERT_EQ(b1->gain(), 0);
+    auto currentBufferState = b1->bufferState();
+    ASSERT_TRUE(isClientGained(currentBufferState, b1ClientMask));
 
     // Gaining from gained state by the same client should not return error.
-    EXPECT_EQ(b1->Gain(), 0);
+    EXPECT_EQ(b1->gain(), 0);
 
     // Gaining from gained state by another client should return error.
-    EXPECT_EQ(b2->Gain(), -EBUSY);
+    EXPECT_EQ(b2->gain(), -EBUSY);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, GainBuffer_fromAcquiredState) {
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_EQ(b1->Post(), 0);
-    ASSERT_EQ(b2->Acquire(), 0);
-    ASSERT_TRUE(AnyClientAcquired(b1->buffer_state()));
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_EQ(b1->post(), 0);
+    ASSERT_EQ(b2->acquire(), 0);
+    ASSERT_TRUE(isAnyClientAcquired(b1->bufferState()));
 
     // Gaining from acquired state should fail.
-    EXPECT_EQ(b1->Gain(), -EBUSY);
-    EXPECT_EQ(b2->Gain(), -EBUSY);
+    EXPECT_EQ(b1->gain(), -EBUSY);
+    EXPECT_EQ(b2->gain(), -EBUSY);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, GainBuffer_fromOtherClientInPostedState) {
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_EQ(b1->Post(), 0);
-    ASSERT_TRUE(AnyClientPosted(b1->buffer_state()));
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_EQ(b1->post(), 0);
+    ASSERT_TRUE(isAnyClientPosted(b1->bufferState()));
 
     // Gaining a buffer who has other posted client should succeed.
-    EXPECT_EQ(b1->Gain(), 0);
+    EXPECT_EQ(b1->gain(), 0);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, GainBuffer_fromSelfInPostedState) {
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_EQ(b1->Post(), 0);
-    ASSERT_TRUE(AnyClientPosted(b1->buffer_state()));
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_EQ(b1->post(), 0);
+    ASSERT_TRUE(isAnyClientPosted(b1->bufferState()));
 
     // A posted client should be able to gain the buffer when there is no other clients in
     // acquired state.
-    EXPECT_EQ(b2->Gain(), 0);
+    EXPECT_EQ(b2->gain(), 0);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, PostBuffer_fromOtherInGainedState) {
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_TRUE(IsClientGained(b1->buffer_state(), b1ClientMask));
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_TRUE(isClientGained(b1->bufferState(), b1ClientMask));
 
-    EXPECT_EQ(b2->Post(), -EBUSY);
+    EXPECT_EQ(b2->post(), -EBUSY);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, PostBuffer_fromSelfInGainedState) {
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_TRUE(IsClientGained(b1->buffer_state(), b1ClientMask));
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_TRUE(isClientGained(b1->bufferState(), b1ClientMask));
 
-    EXPECT_EQ(b1->Post(), 0);
-    auto current_buffer_state = b1->buffer_state();
-    EXPECT_TRUE(IsClientReleased(current_buffer_state, b1ClientMask));
-    EXPECT_TRUE(IsClientPosted(current_buffer_state, b2ClientMask));
+    EXPECT_EQ(b1->post(), 0);
+    auto currentBufferState = b1->bufferState();
+    EXPECT_TRUE(isClientReleased(currentBufferState, b1ClientMask));
+    EXPECT_TRUE(isClientPosted(currentBufferState, b2ClientMask));
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, PostBuffer_fromPostedState) {
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_EQ(b1->Post(), 0);
-    ASSERT_TRUE(AnyClientPosted(b1->buffer_state()));
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_EQ(b1->post(), 0);
+    ASSERT_TRUE(isAnyClientPosted(b1->bufferState()));
 
     // Post from posted state should fail.
-    EXPECT_EQ(b1->Post(), -EBUSY);
-    EXPECT_EQ(b2->Post(), -EBUSY);
+    EXPECT_EQ(b1->post(), -EBUSY);
+    EXPECT_EQ(b2->post(), -EBUSY);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, PostBuffer_fromAcquiredState) {
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_EQ(b1->Post(), 0);
-    ASSERT_EQ(b2->Acquire(), 0);
-    ASSERT_TRUE(AnyClientAcquired(b1->buffer_state()));
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_EQ(b1->post(), 0);
+    ASSERT_EQ(b2->acquire(), 0);
+    ASSERT_TRUE(isAnyClientAcquired(b1->bufferState()));
 
     // Posting from acquired state should fail.
-    EXPECT_EQ(b1->Post(), -EBUSY);
-    EXPECT_EQ(b2->Post(), -EBUSY);
+    EXPECT_EQ(b1->post(), -EBUSY);
+    EXPECT_EQ(b2->post(), -EBUSY);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, PostBuffer_fromReleasedState) {
-    ASSERT_TRUE(b1->IsReleased());
+    ASSERT_TRUE(b1->isReleased());
 
     // Posting from released state should fail.
-    EXPECT_EQ(b1->Post(), -EBUSY);
-    EXPECT_EQ(b2->Post(), -EBUSY);
+    EXPECT_EQ(b1->post(), -EBUSY);
+    EXPECT_EQ(b2->post(), -EBUSY);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, AcquireBuffer_fromSelfInPostedState) {
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_EQ(b1->Post(), 0);
-    ASSERT_TRUE(IsClientPosted(b1->buffer_state(), b2ClientMask));
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_EQ(b1->post(), 0);
+    ASSERT_TRUE(isClientPosted(b1->bufferState(), b2ClientMask));
 
     // Acquire from posted state should pass.
-    EXPECT_EQ(b2->Acquire(), 0);
+    EXPECT_EQ(b2->acquire(), 0);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, AcquireBuffer_fromOtherInPostedState) {
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_EQ(b1->Post(), 0);
-    ASSERT_TRUE(IsClientPosted(b1->buffer_state(), b2ClientMask));
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_EQ(b1->post(), 0);
+    ASSERT_TRUE(isClientPosted(b1->bufferState(), b2ClientMask));
 
     // Acquire from released state should fail, although there are other clients
     // in posted state.
-    EXPECT_EQ(b1->Acquire(), -EBUSY);
+    EXPECT_EQ(b1->acquire(), -EBUSY);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, AcquireBuffer_fromSelfInAcquiredState) {
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_EQ(b1->Post(), 0);
-    ASSERT_EQ(b2->Acquire(), 0);
-    auto current_buffer_state = b1->buffer_state();
-    ASSERT_TRUE(IsClientAcquired(current_buffer_state, b2ClientMask));
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_EQ(b1->post(), 0);
+    ASSERT_EQ(b2->acquire(), 0);
+    auto currentBufferState = b1->bufferState();
+    ASSERT_TRUE(isClientAcquired(currentBufferState, b2ClientMask));
 
     // Acquiring from acquired state by the same client should not error out.
-    EXPECT_EQ(b2->Acquire(), 0);
+    EXPECT_EQ(b2->acquire(), 0);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, AcquireBuffer_fromReleasedState) {
-    ASSERT_TRUE(b1->IsReleased());
+    ASSERT_TRUE(b1->isReleased());
 
     // Acquiring form released state should fail.
-    EXPECT_EQ(b1->Acquire(), -EBUSY);
-    EXPECT_EQ(b2->Acquire(), -EBUSY);
+    EXPECT_EQ(b1->acquire(), -EBUSY);
+    EXPECT_EQ(b2->acquire(), -EBUSY);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, AcquireBuffer_fromGainedState) {
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_TRUE(AnyClientGained(b1->buffer_state()));
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_TRUE(isAnyClientGained(b1->bufferState()));
 
     // Acquiring from gained state should fail.
-    EXPECT_EQ(b1->Acquire(), -EBUSY);
-    EXPECT_EQ(b2->Acquire(), -EBUSY);
+    EXPECT_EQ(b1->acquire(), -EBUSY);
+    EXPECT_EQ(b2->acquire(), -EBUSY);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, ReleaseBuffer_fromSelfInReleasedState) {
-    ASSERT_TRUE(b1->IsReleased());
+    ASSERT_TRUE(b1->isReleased());
 
-    EXPECT_EQ(b1->Release(), 0);
+    EXPECT_EQ(b1->release(), 0);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, ReleaseBuffer_fromSelfInGainedState) {
-    ASSERT_TRUE(b1->IsReleased());
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_TRUE(AnyClientGained(b1->buffer_state()));
+    ASSERT_TRUE(b1->isReleased());
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_TRUE(isAnyClientGained(b1->bufferState()));
 
-    EXPECT_EQ(b1->Release(), 0);
+    EXPECT_EQ(b1->release(), 0);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, ReleaseBuffer_fromSelfInPostedState) {
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_EQ(b1->Post(), 0);
-    ASSERT_TRUE(AnyClientPosted(b1->buffer_state()));
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_EQ(b1->post(), 0);
+    ASSERT_TRUE(isAnyClientPosted(b1->bufferState()));
 
-    EXPECT_EQ(b2->Release(), 0);
+    EXPECT_EQ(b2->release(), 0);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, ReleaseBuffer_fromSelfInAcquiredState) {
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_EQ(b1->Post(), 0);
-    ASSERT_EQ(b2->Acquire(), 0);
-    ASSERT_TRUE(AnyClientAcquired(b1->buffer_state()));
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_EQ(b1->post(), 0);
+    ASSERT_EQ(b2->acquire(), 0);
+    ASSERT_TRUE(isAnyClientAcquired(b1->bufferState()));
 
-    EXPECT_EQ(b2->Release(), 0);
+    EXPECT_EQ(b2->release(), 0);
 }
 
 TEST_F(BufferHubBufferStateTransitionTest, BasicUsage) {
@@ -408,60 +408,60 @@
     // Test if this set of basic operation succeed:
     // Producer post three times to the consumer, and released by consumer.
     for (int i = 0; i < 3; ++i) {
-        ASSERT_EQ(b1->Gain(), 0);
-        ASSERT_EQ(b1->Post(), 0);
-        ASSERT_EQ(b2->Acquire(), 0);
-        ASSERT_EQ(b2->Release(), 0);
+        ASSERT_EQ(b1->gain(), 0);
+        ASSERT_EQ(b1->post(), 0);
+        ASSERT_EQ(b2->acquire(), 0);
+        ASSERT_EQ(b2->release(), 0);
     }
 }
 
 TEST_F(BufferHubBufferTest, createNewConsumerAfterGain) {
     // Create a poducer buffer and gain.
     std::unique_ptr<BufferHubBuffer> b1 =
-            BufferHubBuffer::Create(kWidth, kHeight, kLayerCount, kFormat, kUsage,
+            BufferHubBuffer::create(kWidth, kHeight, kLayerCount, kFormat, kUsage,
                                     kUserMetadataSize);
     ASSERT_THAT(b1, NotNull());
-    ASSERT_EQ(b1->Gain(), 0);
+    ASSERT_EQ(b1->gain(), 0);
 
     // Create a consumer of the buffer and test if the consumer can acquire the
     // buffer if producer posts.
     // TODO(b/122543147): use a movalbe wrapper for token
-    native_handle_t* token = b1->Duplicate();
+    native_handle_t* token = b1->duplicate();
     ASSERT_TRUE(token);
 
-    std::unique_ptr<BufferHubBuffer> b2 = BufferHubBuffer::Import(token);
+    std::unique_ptr<BufferHubBuffer> b2 = BufferHubBuffer::import(token);
     native_handle_close(token);
     native_handle_delete(token);
 
     ASSERT_THAT(b2, NotNull());
-    ASSERT_NE(b1->client_state_mask(), b2->client_state_mask());
+    ASSERT_NE(b1->clientStateMask(), b2->clientStateMask());
 
-    ASSERT_EQ(b1->Post(), 0);
-    EXPECT_EQ(b2->Acquire(), 0);
+    ASSERT_EQ(b1->post(), 0);
+    EXPECT_EQ(b2->acquire(), 0);
 }
 
 TEST_F(BufferHubBufferTest, createNewConsumerAfterPost) {
     // Create a poducer buffer and post.
     std::unique_ptr<BufferHubBuffer> b1 =
-            BufferHubBuffer::Create(kWidth, kHeight, kLayerCount, kFormat, kUsage,
+            BufferHubBuffer::create(kWidth, kHeight, kLayerCount, kFormat, kUsage,
                                     kUserMetadataSize);
-    ASSERT_EQ(b1->Gain(), 0);
-    ASSERT_EQ(b1->Post(), 0);
+    ASSERT_EQ(b1->gain(), 0);
+    ASSERT_EQ(b1->post(), 0);
 
     // Create a consumer of the buffer and test if the consumer can acquire the
     // buffer if producer posts.
     // TODO(b/122543147): use a movalbe wrapper for token
-    native_handle_t* token = b1->Duplicate();
+    native_handle_t* token = b1->duplicate();
     ASSERT_TRUE(token);
 
-    std::unique_ptr<BufferHubBuffer> b2 = BufferHubBuffer::Import(token);
+    std::unique_ptr<BufferHubBuffer> b2 = BufferHubBuffer::import(token);
     native_handle_close(token);
     native_handle_delete(token);
 
     ASSERT_THAT(b2, NotNull());
-    ASSERT_NE(b1->client_state_mask(), b2->client_state_mask());
+    ASSERT_NE(b1->clientStateMask(), b2->clientStateMask());
 
-    EXPECT_EQ(b2->Acquire(), 0);
+    EXPECT_EQ(b2->acquire(), 0);
 }
 
 } // namespace
diff --git a/libs/ui/tests/BufferHubMetadata_test.cpp b/libs/ui/tests/BufferHubMetadata_test.cpp
index b7f0b4b..f02c4fc 100644
--- a/libs/ui/tests/BufferHubMetadata_test.cpp
+++ b/libs/ui/tests/BufferHubMetadata_test.cpp
@@ -25,74 +25,73 @@
 class BufferHubMetadataTest : public ::testing::Test {};
 
 TEST_F(BufferHubMetadataTest, Create_UserMetdataSizeTooBig) {
-  BufferHubMetadata m1 =
-      BufferHubMetadata::Create(std::numeric_limits<uint32_t>::max());
-  EXPECT_FALSE(m1.IsValid());
+    BufferHubMetadata m1 = BufferHubMetadata::create(std::numeric_limits<uint32_t>::max());
+    EXPECT_FALSE(m1.isValid());
 }
 
 TEST_F(BufferHubMetadataTest, Create_Success) {
-  BufferHubMetadata m1 = BufferHubMetadata::Create(kEmptyUserMetadataSize);
-  EXPECT_TRUE(m1.IsValid());
-  EXPECT_NE(m1.metadata_header(), nullptr);
+    BufferHubMetadata m1 = BufferHubMetadata::create(kEmptyUserMetadataSize);
+    EXPECT_TRUE(m1.isValid());
+    EXPECT_NE(m1.metadataHeader(), nullptr);
 }
 
 TEST_F(BufferHubMetadataTest, Import_Success) {
-  BufferHubMetadata m1 = BufferHubMetadata::Create(kEmptyUserMetadataSize);
-  EXPECT_TRUE(m1.IsValid());
-  EXPECT_NE(m1.metadata_header(), nullptr);
+    BufferHubMetadata m1 = BufferHubMetadata::create(kEmptyUserMetadataSize);
+    EXPECT_TRUE(m1.isValid());
+    EXPECT_NE(m1.metadataHeader(), nullptr);
 
-  unique_fd h2 = unique_fd(dup(m1.ashmem_fd().get()));
-  EXPECT_NE(h2.get(), -1);
+    unique_fd h2 = unique_fd(dup(m1.ashmemFd().get()));
+    EXPECT_NE(h2.get(), -1);
 
-  BufferHubMetadata m2 = BufferHubMetadata::Import(std::move(h2));
-  EXPECT_EQ(h2.get(), -1);
-  EXPECT_TRUE(m1.IsValid());
-  BufferHubDefs::MetadataHeader* mh1 = m1.metadata_header();
-  EXPECT_NE(mh1, nullptr);
+    BufferHubMetadata m2 = BufferHubMetadata::import(std::move(h2));
+    EXPECT_EQ(h2.get(), -1);
+    EXPECT_TRUE(m1.isValid());
+    BufferHubDefs::MetadataHeader* mh1 = m1.metadataHeader();
+    EXPECT_NE(mh1, nullptr);
 
-  // Check if the newly allocated buffer is initialized in released state (i.e.
-  // state equals to 0U).
-  EXPECT_TRUE(mh1->buffer_state.load() == 0U);
+    // Check if the newly allocated buffer is initialized in released state (i.e.
+    // state equals to 0U).
+    EXPECT_TRUE(mh1->buffer_state.load() == 0U);
 
-  EXPECT_TRUE(m2.IsValid());
-  BufferHubDefs::MetadataHeader* mh2 = m2.metadata_header();
-  EXPECT_NE(mh2, nullptr);
+    EXPECT_TRUE(m2.isValid());
+    BufferHubDefs::MetadataHeader* mh2 = m2.metadataHeader();
+    EXPECT_NE(mh2, nullptr);
 
-  // Check if the newly allocated buffer is initialized in released state (i.e.
-  // state equals to 0U).
-  EXPECT_TRUE(mh2->buffer_state.load() == 0U);
+    // Check if the newly allocated buffer is initialized in released state (i.e.
+    // state equals to 0U).
+    EXPECT_TRUE(mh2->buffer_state.load() == 0U);
 }
 
 TEST_F(BufferHubMetadataTest, MoveMetadataInvalidatesOldOne) {
-  BufferHubMetadata m1 = BufferHubMetadata::Create(sizeof(int));
-  EXPECT_TRUE(m1.IsValid());
-  EXPECT_NE(m1.metadata_header(), nullptr);
-  EXPECT_NE(m1.ashmem_fd().get(), -1);
-  EXPECT_EQ(m1.user_metadata_size(), sizeof(int));
+    BufferHubMetadata m1 = BufferHubMetadata::create(sizeof(int));
+    EXPECT_TRUE(m1.isValid());
+    EXPECT_NE(m1.metadataHeader(), nullptr);
+    EXPECT_NE(m1.ashmemFd().get(), -1);
+    EXPECT_EQ(m1.userMetadataSize(), sizeof(int));
 
-  BufferHubMetadata m2 = std::move(m1);
+    BufferHubMetadata m2 = std::move(m1);
 
-  // After the move, the metadata header (a raw pointer) should be reset in the older buffer.
-  EXPECT_EQ(m1.metadata_header(), nullptr);
-  EXPECT_NE(m2.metadata_header(), nullptr);
+    // After the move, the metadata header (a raw pointer) should be reset in the older buffer.
+    EXPECT_EQ(m1.metadataHeader(), nullptr);
+    EXPECT_NE(m2.metadataHeader(), nullptr);
 
-  EXPECT_EQ(m1.ashmem_fd().get(), -1);
-  EXPECT_NE(m2.ashmem_fd().get(), -1);
+    EXPECT_EQ(m1.ashmemFd().get(), -1);
+    EXPECT_NE(m2.ashmemFd().get(), -1);
 
-  EXPECT_EQ(m1.user_metadata_size(), 0U);
-  EXPECT_EQ(m2.user_metadata_size(), sizeof(int));
+    EXPECT_EQ(m1.userMetadataSize(), 0U);
+    EXPECT_EQ(m2.userMetadataSize(), sizeof(int));
 
-  BufferHubMetadata m3{std::move(m2)};
+    BufferHubMetadata m3{std::move(m2)};
 
-  // After the move, the metadata header (a raw pointer) should be reset in the older buffer.
-  EXPECT_EQ(m2.metadata_header(), nullptr);
-  EXPECT_NE(m3.metadata_header(), nullptr);
+    // After the move, the metadata header (a raw pointer) should be reset in the older buffer.
+    EXPECT_EQ(m2.metadataHeader(), nullptr);
+    EXPECT_NE(m3.metadataHeader(), nullptr);
 
-  EXPECT_EQ(m2.ashmem_fd().get(), -1);
-  EXPECT_NE(m3.ashmem_fd().get(), -1);
+    EXPECT_EQ(m2.ashmemFd().get(), -1);
+    EXPECT_NE(m3.ashmemFd().get(), -1);
 
-  EXPECT_EQ(m2.user_metadata_size(), 0U);
-  EXPECT_EQ(m3.user_metadata_size(), sizeof(int));
+    EXPECT_EQ(m2.userMetadataSize(), 0U);
+    EXPECT_EQ(m3.userMetadataSize(), sizeof(int));
 }
 
 }  // namespace dvr
diff --git a/libs/ui/tests/GraphicBuffer_test.cpp b/libs/ui/tests/GraphicBuffer_test.cpp
index 5b46454..c767ce0 100644
--- a/libs/ui/tests/GraphicBuffer_test.cpp
+++ b/libs/ui/tests/GraphicBuffer_test.cpp
@@ -37,10 +37,10 @@
 
 TEST_F(GraphicBufferTest, CreateFromBufferHubBuffer) {
     std::unique_ptr<BufferHubBuffer> b1 =
-            BufferHubBuffer::Create(kTestWidth, kTestHeight, kTestLayerCount, kTestFormat,
+            BufferHubBuffer::create(kTestWidth, kTestHeight, kTestLayerCount, kTestFormat,
                                     kTestUsage, /*userMetadataSize=*/0);
     ASSERT_NE(b1, nullptr);
-    EXPECT_TRUE(b1->IsValid());
+    EXPECT_TRUE(b1->isValid());
 
     sp<GraphicBuffer> gb(new GraphicBuffer(std::move(b1)));
     EXPECT_TRUE(gb->isBufferHubBuffer());
@@ -61,10 +61,10 @@
 
 TEST_F(GraphicBufferTest, BufferIdMatchesBufferHubBufferId) {
     std::unique_ptr<BufferHubBuffer> b1 =
-            BufferHubBuffer::Create(kTestWidth, kTestHeight, kTestLayerCount, kTestFormat,
+            BufferHubBuffer::create(kTestWidth, kTestHeight, kTestLayerCount, kTestFormat,
                                     kTestUsage, /*userMetadataSize=*/0);
     EXPECT_NE(b1, nullptr);
-    EXPECT_TRUE(b1->IsValid());
+    EXPECT_TRUE(b1->isValid());
 
     int b1_id = b1->id();
     EXPECT_GE(b1_id, 0);
diff --git a/libs/vr/libbufferhub/buffer_hub-test.cpp b/libs/vr/libbufferhub/buffer_hub-test.cpp
index 527a27d..27ab024 100644
--- a/libs/vr/libbufferhub/buffer_hub-test.cpp
+++ b/libs/vr/libbufferhub/buffer_hub-test.cpp
@@ -20,12 +20,12 @@
     return result;                            \
   })()
 
-using android::BufferHubDefs::AnyClientAcquired;
-using android::BufferHubDefs::AnyClientGained;
-using android::BufferHubDefs::AnyClientPosted;
-using android::BufferHubDefs::IsClientAcquired;
-using android::BufferHubDefs::IsClientPosted;
-using android::BufferHubDefs::IsClientReleased;
+using android::BufferHubDefs::isAnyClientAcquired;
+using android::BufferHubDefs::isAnyClientGained;
+using android::BufferHubDefs::isAnyClientPosted;
+using android::BufferHubDefs::isClientAcquired;
+using android::BufferHubDefs::isClientPosted;
+using android::BufferHubDefs::isClientReleased;
 using android::BufferHubDefs::kFirstClientBitMask;
 using android::dvr::ConsumerBuffer;
 using android::dvr::ProducerBuffer;
@@ -268,7 +268,7 @@
   // Post in gained state should succeed.
   EXPECT_EQ(0, p->PostAsync(&metadata, invalid_fence));
   EXPECT_EQ(p->buffer_state(), c->buffer_state());
-  EXPECT_TRUE(AnyClientPosted(p->buffer_state()));
+  EXPECT_TRUE(isAnyClientPosted(p->buffer_state()));
 
   // Post and gain in posted state should fail.
   EXPECT_EQ(-EBUSY, p->PostAsync(&metadata, invalid_fence));
@@ -280,7 +280,7 @@
   EXPECT_EQ(0, c->AcquireAsync(&metadata, &invalid_fence));
   EXPECT_FALSE(invalid_fence.IsValid());
   EXPECT_EQ(p->buffer_state(), c->buffer_state());
-  EXPECT_TRUE(AnyClientAcquired(p->buffer_state()));
+  EXPECT_TRUE(isAnyClientAcquired(p->buffer_state()));
 
   // Acquire, post, and gain in acquired state should fail.
   EXPECT_EQ(-EBUSY, c->AcquireAsync(&metadata, &invalid_fence));
@@ -304,7 +304,7 @@
   EXPECT_EQ(0, p->GainAsync(&metadata, &invalid_fence));
   EXPECT_FALSE(invalid_fence.IsValid());
   EXPECT_EQ(p->buffer_state(), c->buffer_state());
-  EXPECT_TRUE(AnyClientGained(p->buffer_state()));
+  EXPECT_TRUE(isAnyClientGained(p->buffer_state()));
 
   // Acquire and gain in gained state should fail.
   EXPECT_EQ(-EBUSY, c->AcquireAsync(&metadata, &invalid_fence));
@@ -329,7 +329,7 @@
   ASSERT_TRUE(c.get() != nullptr);
   ASSERT_EQ(0, p->GainAsync());
   ASSERT_EQ(0, p->Post(LocalHandle()));
-  ASSERT_TRUE(AnyClientPosted(p->buffer_state()));
+  ASSERT_TRUE(isAnyClientPosted(p->buffer_state()));
 
   // Gain in posted state should only succeed with gain_posted_buffer = true.
   LocalHandle invalid_fence;
@@ -346,7 +346,7 @@
   ASSERT_TRUE(c.get() != nullptr);
   ASSERT_EQ(0, p->GainAsync());
   ASSERT_EQ(0, p->Post(LocalHandle()));
-  ASSERT_TRUE(AnyClientPosted(p->buffer_state()));
+  ASSERT_TRUE(isAnyClientPosted(p->buffer_state()));
 
   // GainAsync in posted state should only succeed with gain_posted_buffer
   // equals true.
@@ -364,9 +364,9 @@
   ASSERT_EQ(0, p->Post(LocalHandle()));
   // Producer state bit is in released state after post, other clients shall be
   // in posted state although there is no consumer of this buffer yet.
-  ASSERT_TRUE(IsClientReleased(p->buffer_state(), p->client_state_mask()));
+  ASSERT_TRUE(isClientReleased(p->buffer_state(), p->client_state_mask()));
   ASSERT_TRUE(p->is_released());
-  ASSERT_TRUE(AnyClientPosted(p->buffer_state()));
+  ASSERT_TRUE(isAnyClientPosted(p->buffer_state()));
 
   // Gain in released state should succeed.
   LocalHandle invalid_fence;
@@ -393,14 +393,14 @@
 
   // Post the producer should trigger all consumers to be available.
   EXPECT_EQ(0, p->PostAsync(&metadata, invalid_fence));
-  EXPECT_TRUE(IsClientReleased(p->buffer_state(), p->client_state_mask()));
+  EXPECT_TRUE(isClientReleased(p->buffer_state(), p->client_state_mask()));
   for (size_t i = 0; i < kMaxConsumerCount; ++i) {
     EXPECT_TRUE(
-        IsClientPosted(cs[i]->buffer_state(), cs[i]->client_state_mask()));
+        isClientPosted(cs[i]->buffer_state(), cs[i]->client_state_mask()));
     EXPECT_LT(0, RETRY_EINTR(PollBufferEvent(cs[i])));
     EXPECT_EQ(0, cs[i]->AcquireAsync(&metadata, &invalid_fence));
     EXPECT_TRUE(
-        IsClientAcquired(p->buffer_state(), cs[i]->client_state_mask()));
+        isClientAcquired(p->buffer_state(), cs[i]->client_state_mask()));
   }
 
   // All consumers have to release before the buffer is considered to be
@@ -424,22 +424,22 @@
       kWidth, kHeight, kFormat, kUsage, sizeof(uint64_t));
   ASSERT_TRUE(p.get() != nullptr);
   EXPECT_EQ(0, p->GainAsync());
-  EXPECT_TRUE(AnyClientGained(p->buffer_state()));
+  EXPECT_TRUE(isAnyClientGained(p->buffer_state()));
 
   std::unique_ptr<ConsumerBuffer> c =
       ConsumerBuffer::Import(p->CreateConsumer());
   ASSERT_TRUE(c.get() != nullptr);
-  EXPECT_TRUE(AnyClientGained(c->buffer_state()));
+  EXPECT_TRUE(isAnyClientGained(c->buffer_state()));
 
   DvrNativeBufferMetadata metadata;
   LocalHandle invalid_fence;
 
   // Post the gained buffer should signal already created consumer.
   EXPECT_EQ(0, p->PostAsync(&metadata, invalid_fence));
-  EXPECT_TRUE(AnyClientPosted(p->buffer_state()));
+  EXPECT_TRUE(isAnyClientPosted(p->buffer_state()));
   EXPECT_LT(0, RETRY_EINTR(PollBufferEvent(c)));
   EXPECT_EQ(0, c->AcquireAsync(&metadata, &invalid_fence));
-  EXPECT_TRUE(AnyClientAcquired(c->buffer_state()));
+  EXPECT_TRUE(isAnyClientAcquired(c->buffer_state()));
 }
 
 TEST_F(LibBufferHubTest, TestCreateTheFirstConsumerAfterPostingBuffer) {
@@ -447,7 +447,7 @@
       kWidth, kHeight, kFormat, kUsage, sizeof(uint64_t));
   ASSERT_TRUE(p.get() != nullptr);
   EXPECT_EQ(0, p->GainAsync());
-  EXPECT_TRUE(AnyClientGained(p->buffer_state()));
+  EXPECT_TRUE(isAnyClientGained(p->buffer_state()));
 
   DvrNativeBufferMetadata metadata;
   LocalHandle invalid_fence;
@@ -462,7 +462,7 @@
   std::unique_ptr<ConsumerBuffer> c =
       ConsumerBuffer::Import(p->CreateConsumer());
   ASSERT_TRUE(c.get() != nullptr);
-  EXPECT_TRUE(IsClientPosted(c->buffer_state(), c->client_state_mask()));
+  EXPECT_TRUE(isClientPosted(c->buffer_state(), c->client_state_mask()));
   EXPECT_EQ(0, c->AcquireAsync(&metadata, &invalid_fence));
 }
 
@@ -500,7 +500,7 @@
 
   EXPECT_TRUE(p->is_released());
   EXPECT_EQ(0, p->GainAsync(&metadata, &invalid_fence));
-  EXPECT_TRUE(AnyClientGained(p->buffer_state()));
+  EXPECT_TRUE(isAnyClientGained(p->buffer_state()));
 }
 
 TEST_F(LibBufferHubTest, TestWithCustomMetadata) {
diff --git a/libs/vr/libbufferhub/consumer_buffer.cpp b/libs/vr/libbufferhub/consumer_buffer.cpp
index b6ca64e..115e866 100644
--- a/libs/vr/libbufferhub/consumer_buffer.cpp
+++ b/libs/vr/libbufferhub/consumer_buffer.cpp
@@ -38,7 +38,7 @@
   // The buffer can be acquired iff the buffer state for this client is posted.
   uint32_t current_buffer_state =
       buffer_state_->load(std::memory_order_acquire);
-  if (!BufferHubDefs::IsClientPosted(current_buffer_state,
+  if (!BufferHubDefs::isClientPosted(current_buffer_state,
                                      client_state_mask())) {
     ALOGE(
         "%s: Failed to acquire the buffer. The buffer is not posted, id=%d "
@@ -58,7 +58,7 @@
         " when trying to acquire the buffer and modify the buffer state to "
         "%" PRIx32 ". About to try again if the buffer is still posted.",
         __FUNCTION__, current_buffer_state, updated_buffer_state);
-    if (!BufferHubDefs::IsClientPosted(current_buffer_state,
+    if (!BufferHubDefs::isClientPosted(current_buffer_state,
                                        client_state_mask())) {
       ALOGE(
           "%s: Failed to acquire the buffer. The buffer is no longer posted, "
@@ -144,7 +144,7 @@
   // released state.
   uint32_t current_buffer_state =
       buffer_state_->load(std::memory_order_acquire);
-  if (BufferHubDefs::IsClientReleased(current_buffer_state,
+  if (BufferHubDefs::isClientReleased(current_buffer_state,
                                       client_state_mask())) {
     return 0;
   }
diff --git a/libs/vr/libbufferhub/include/private/dvr/buffer_hub_defs.h b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_defs.h
index bab7367..e610e18 100644
--- a/libs/vr/libbufferhub/include/private/dvr/buffer_hub_defs.h
+++ b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_defs.h
@@ -27,38 +27,38 @@
 static constexpr uint32_t kFirstClientBitMask =
     android::BufferHubDefs::kFirstClientBitMask;
 
-static inline bool AnyClientGained(uint32_t state) {
-  return android::BufferHubDefs::AnyClientGained(state);
+static inline bool isAnyClientGained(uint32_t state) {
+  return android::BufferHubDefs::isAnyClientGained(state);
 }
 
-static inline bool IsClientGained(uint32_t state, uint32_t client_bit_mask) {
-  return android::BufferHubDefs::IsClientGained(state, client_bit_mask);
+static inline bool isClientGained(uint32_t state, uint32_t client_bit_mask) {
+  return android::BufferHubDefs::isClientGained(state, client_bit_mask);
 }
 
-static inline bool AnyClientPosted(uint32_t state) {
-  return android::BufferHubDefs::AnyClientPosted(state);
+static inline bool isAnyClientPosted(uint32_t state) {
+  return android::BufferHubDefs::isAnyClientPosted(state);
 }
 
-static inline bool IsClientPosted(uint32_t state, uint32_t client_bit_mask) {
-  return android::BufferHubDefs::IsClientPosted(state, client_bit_mask);
+static inline bool isClientPosted(uint32_t state, uint32_t client_bit_mask) {
+  return android::BufferHubDefs::isClientPosted(state, client_bit_mask);
 }
 
-static inline bool AnyClientAcquired(uint32_t state) {
-  return android::BufferHubDefs::AnyClientAcquired(state);
+static inline bool isAnyClientAcquired(uint32_t state) {
+  return android::BufferHubDefs::isAnyClientAcquired(state);
 }
 
-static inline bool IsClientAcquired(uint32_t state, uint32_t client_bit_mask) {
-  return android::BufferHubDefs::IsClientAcquired(state, client_bit_mask);
+static inline bool isClientAcquired(uint32_t state, uint32_t client_bit_mask) {
+  return android::BufferHubDefs::isClientAcquired(state, client_bit_mask);
 }
 
-static inline bool IsClientReleased(uint32_t state, uint32_t client_bit_mask) {
-  return android::BufferHubDefs::IsClientReleased(state, client_bit_mask);
+static inline bool isClientReleased(uint32_t state, uint32_t client_bit_mask) {
+  return android::BufferHubDefs::isClientReleased(state, client_bit_mask);
 }
 
 // Returns the next available buffer client's client_state_masks.
 // @params union_bits. Union of all existing clients' client_state_masks.
-static inline uint32_t FindNextAvailableClientStateMask(uint32_t union_bits) {
-  return android::BufferHubDefs::FindNextAvailableClientStateMask(union_bits);
+static inline uint32_t findNextAvailableClientStateMask(uint32_t union_bits) {
+  return android::BufferHubDefs::findNextAvailableClientStateMask(union_bits);
 }
 
 using MetadataHeader = android::BufferHubDefs::MetadataHeader;
diff --git a/libs/vr/libbufferhub/producer_buffer.cpp b/libs/vr/libbufferhub/producer_buffer.cpp
index edfdddf..3d88ba5 100644
--- a/libs/vr/libbufferhub/producer_buffer.cpp
+++ b/libs/vr/libbufferhub/producer_buffer.cpp
@@ -82,7 +82,7 @@
   // The buffer can be posted iff the buffer state for this client is gained.
   uint32_t current_buffer_state =
       buffer_state_->load(std::memory_order_acquire);
-  if (!BufferHubDefs::IsClientGained(current_buffer_state,
+  if (!BufferHubDefs::isClientGained(current_buffer_state,
                                      client_state_mask())) {
     ALOGE("%s: not gained, id=%d state=%" PRIx32 ".", __FUNCTION__, id(),
           current_buffer_state);
@@ -103,7 +103,7 @@
         "%" PRIx32
         ". About to try again if the buffer is still gained by this client.",
         __FUNCTION__, current_buffer_state, updated_buffer_state);
-    if (!BufferHubDefs::IsClientGained(current_buffer_state,
+    if (!BufferHubDefs::isClientGained(current_buffer_state,
                                        client_state_mask())) {
       ALOGE(
           "%s: Failed to post the buffer. The buffer is no longer gained, "
@@ -166,14 +166,14 @@
   ALOGD_IF(TRACE, "%s: buffer=%d, state=%" PRIx32 ".", __FUNCTION__, id(),
            current_buffer_state);
 
-  if (BufferHubDefs::IsClientGained(current_buffer_state,
+  if (BufferHubDefs::isClientGained(current_buffer_state,
                                     client_state_mask())) {
     ALOGV("%s: already gained id=%d.", __FUNCTION__, id());
     return 0;
   }
-  if (BufferHubDefs::AnyClientAcquired(current_buffer_state) ||
-      BufferHubDefs::AnyClientGained(current_buffer_state) ||
-      (BufferHubDefs::AnyClientPosted(
+  if (BufferHubDefs::isAnyClientAcquired(current_buffer_state) ||
+      BufferHubDefs::isAnyClientGained(current_buffer_state) ||
+      (BufferHubDefs::isAnyClientPosted(
            current_buffer_state &
            active_clients_bit_mask_->load(std::memory_order_acquire)) &&
        !gain_posted_buffer)) {
@@ -195,9 +195,9 @@
         "clients.",
         __FUNCTION__, current_buffer_state, updated_buffer_state);
 
-    if (BufferHubDefs::AnyClientAcquired(current_buffer_state) ||
-        BufferHubDefs::AnyClientGained(current_buffer_state) ||
-        (BufferHubDefs::AnyClientPosted(
+    if (BufferHubDefs::isAnyClientAcquired(current_buffer_state) ||
+        BufferHubDefs::isAnyClientGained(current_buffer_state) ||
+        (BufferHubDefs::isAnyClientPosted(
              current_buffer_state &
              active_clients_bit_mask_->load(std::memory_order_acquire)) &&
          !gain_posted_buffer)) {
@@ -291,7 +291,7 @@
   // TODO(b/112338294) Keep here for reference. Remove it after new logic is
   // written.
   /* uint32_t buffer_state = buffer_state_->load(std::memory_order_acquire);
-  if (!BufferHubDefs::IsClientGained(
+  if (!BufferHubDefs::isClientGained(
       buffer_state, BufferHubDefs::kFirstClientStateMask)) {
     // Can only detach a ProducerBuffer when it's in gained state.
     ALOGW("ProducerBuffer::Detach: The buffer (id=%d, state=0x%" PRIx32
diff --git a/libs/vr/libbufferhubqueue/buffer_hub_queue_client.cpp b/libs/vr/libbufferhubqueue/buffer_hub_queue_client.cpp
index d7833f3..2d3fa4a 100644
--- a/libs/vr/libbufferhubqueue/buffer_hub_queue_client.cpp
+++ b/libs/vr/libbufferhubqueue/buffer_hub_queue_client.cpp
@@ -532,7 +532,7 @@
 Status<size_t> ProducerQueue::InsertBuffer(
     const std::shared_ptr<ProducerBuffer>& buffer) {
   if (buffer == nullptr ||
-      !BufferHubDefs::IsClientGained(buffer->buffer_state(),
+      !BufferHubDefs::isClientGained(buffer->buffer_state(),
                                      buffer->client_state_mask())) {
     ALOGE(
         "ProducerQueue::InsertBuffer: Can only insert a buffer when it's in "
@@ -638,7 +638,7 @@
             static_cast<int>(*slot));
       return ErrorStatus(EIO);
     }
-    if (!BufferHubDefs::AnyClientAcquired(buffer->buffer_state())) {
+    if (!BufferHubDefs::isAnyClientAcquired(buffer->buffer_state())) {
       *slot = *iter;
       unavailable_buffers_slot_.erase(iter);
       unavailable_buffers_slot_.push_back(*slot);
diff --git a/opengl/libagl/Android.bp b/opengl/libagl/Android.bp
new file mode 100644
index 0000000..6ec24b3
--- /dev/null
+++ b/opengl/libagl/Android.bp
@@ -0,0 +1,99 @@
+//
+// Build the software OpenGL ES library
+//
+
+cc_defaults {
+    name: "libGLES_android_defaults",
+
+    cflags: [
+        "-DLOG_TAG=\"libagl\"",
+        "-DGL_GLEXT_PROTOTYPES",
+        "-DEGL_EGLEXT_PROTOTYPES",
+        "-fvisibility=hidden",
+        "-Wall",
+        "-Werror",
+    ],
+
+    shared_libs: [
+        "libcutils",
+        "libhardware",
+        "libutils",
+        "liblog",
+        "libpixelflinger",
+        "libETC1",
+        "libui",
+        "libnativewindow",
+    ],
+
+    // we need to access the private Bionic header <bionic_tls.h>
+    include_dirs: ["bionic/libc/private"],
+
+    arch: {
+        arm: {
+            cflags: ["-fstrict-aliasing"],
+        },
+
+        mips: {
+            cflags: [
+                "-fstrict-aliasing",
+                // The graphics code can generate division by zero
+                "-mno-check-zero-division",
+            ],
+        },
+    },
+}
+
+cc_library_shared {
+    name: "libGLES_android",
+    defaults: ["libGLES_android_defaults"],
+
+    whole_static_libs: ["libGLES_android_arm"],
+
+    srcs: [
+        "egl.cpp",
+        "state.cpp",
+        "texture.cpp",
+        "Tokenizer.cpp",
+        "TokenManager.cpp",
+        "TextureObjectManager.cpp",
+        "BufferObjectManager.cpp",
+    ],
+
+    arch: {
+        arm: {
+            srcs: [
+                "fixed_asm.S",
+                "iterators.S",
+            ],
+        },
+
+        mips: {
+            rev6: {
+                srcs: ["arch-mips/fixed_asm.S"],
+            },
+        },
+    },
+
+    relative_install_path: "egl",
+}
+
+cc_library_static {
+    name: "libGLES_android_arm",
+    defaults: ["libGLES_android_defaults"],
+
+    srcs: [
+        "array.cpp",
+        "fp.cpp",
+        "light.cpp",
+        "matrix.cpp",
+        "mipmap.cpp",
+        "primitives.cpp",
+        "vertex.cpp",
+    ],
+
+    arch: {
+        arm: {
+            instruction_set: "arm",
+        },
+    },
+}
diff --git a/opengl/libagl/Android.mk b/opengl/libagl/Android.mk
deleted file mode 100644
index 15a12e4..0000000
--- a/opengl/libagl/Android.mk
+++ /dev/null
@@ -1,49 +0,0 @@
-LOCAL_PATH:= $(call my-dir)
-
-#
-# Build the software OpenGL ES library
-#
-
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES:= \
-	egl.cpp                     \
-	state.cpp		            \
-	texture.cpp		            \
-    Tokenizer.cpp               \
-    TokenManager.cpp            \
-    TextureObjectManager.cpp    \
-    BufferObjectManager.cpp     \
-	array.cpp.arm		        \
-	fp.cpp.arm		            \
-	light.cpp.arm		        \
-	matrix.cpp.arm		        \
-	mipmap.cpp.arm		        \
-	primitives.cpp.arm	        \
-	vertex.cpp.arm
-
-LOCAL_CFLAGS += -DLOG_TAG=\"libagl\"
-LOCAL_CFLAGS += -DGL_GLEXT_PROTOTYPES -DEGL_EGLEXT_PROTOTYPES
-LOCAL_CFLAGS += -fvisibility=hidden
-
-LOCAL_SHARED_LIBRARIES := libcutils libhardware libutils liblog libpixelflinger libETC1 libui libnativewindow
-
-LOCAL_SRC_FILES_arm += fixed_asm.S iterators.S
-LOCAL_CFLAGS_arm += -fstrict-aliasing
-
-ifndef ARCH_MIPS_REV6
-LOCAL_SRC_FILES_mips += arch-mips/fixed_asm.S
-endif
-LOCAL_CFLAGS_mips += -fstrict-aliasing
-# The graphics code can generate division by zero
-LOCAL_CFLAGS_mips += -mno-check-zero-division
-
-LOCAL_CFLAGS += -Wall -Werror
-
-# we need to access the private Bionic header <bionic_tls.h>
-LOCAL_C_INCLUDES += bionic/libc/private
-
-LOCAL_MODULE_RELATIVE_PATH := egl
-LOCAL_MODULE:= libGLES_android
-
-include $(BUILD_SHARED_LIBRARY)
diff --git a/services/bufferhub/BufferHubService.cpp b/services/bufferhub/BufferHubService.cpp
index 6b802fb..90ac1c2 100644
--- a/services/bufferhub/BufferHubService.cpp
+++ b/services/bufferhub/BufferHubService.cpp
@@ -53,7 +53,7 @@
             std::make_shared<BufferNode>(desc.width, desc.height, desc.layers, desc.format,
                                          desc.usage, userMetadataSize,
                                          BufferHubIdGenerator::getInstance().getId());
-    if (node == nullptr || !node->IsValid()) {
+    if (node == nullptr || !node->isValid()) {
         ALOGE("%s: creating BufferNode failed.", __FUNCTION__);
         _hidl_cb(/*status=*/BufferHubStatus::ALLOCATION_FAILED, /*bufferClient=*/nullptr,
                  /*bufferTraits=*/{});
@@ -70,11 +70,11 @@
     NATIVE_HANDLE_DECLARE_STORAGE(bufferInfoStorage, BufferHubDefs::kBufferInfoNumFds,
                                   BufferHubDefs::kBufferInfoNumInts);
     hidl_handle bufferInfo =
-            buildBufferInfo(bufferInfoStorage, node->id(), node->AddNewActiveClientsBitToMask(),
-                            node->user_metadata_size(), node->metadata().ashmem_fd(),
+            buildBufferInfo(bufferInfoStorage, node->id(), node->addNewActiveClientsBitToMask(),
+                            node->userMetadataSize(), node->metadata().ashmemFd(),
                             node->eventFd().get());
     BufferTraits bufferTraits = {/*bufferDesc=*/description,
-                                 /*bufferHandle=*/hidl_handle(node->buffer_handle()),
+                                 /*bufferHandle=*/hidl_handle(node->bufferHandle()),
                                  /*bufferInfo=*/std::move(bufferInfo)};
 
     _hidl_cb(/*status=*/BufferHubStatus::NO_ERROR, /*bufferClient=*/client,
@@ -141,7 +141,7 @@
     }
 
     sp<BufferClient> client = new BufferClient(*originClient);
-    uint32_t clientStateMask = client->getBufferNode()->AddNewActiveClientsBitToMask();
+    uint32_t clientStateMask = client->getBufferNode()->addNewActiveClientsBitToMask();
     if (clientStateMask == 0U) {
         // Reach max client count
         ALOGE("%s: import failed, BufferNode#%u reached maximum clients.", __FUNCTION__,
@@ -157,17 +157,17 @@
     std::shared_ptr<BufferNode> node = client->getBufferNode();
 
     HardwareBufferDescription bufferDesc;
-    memcpy(&bufferDesc, &node->buffer_desc(), sizeof(HardwareBufferDescription));
+    memcpy(&bufferDesc, &node->bufferDesc(), sizeof(HardwareBufferDescription));
 
     // Allocate memory for bufferInfo of type hidl_handle on the stack. See
     // http://aosp/286282 for the usage of NATIVE_HANDLE_DECLARE_STORAGE.
     NATIVE_HANDLE_DECLARE_STORAGE(bufferInfoStorage, BufferHubDefs::kBufferInfoNumFds,
                                   BufferHubDefs::kBufferInfoNumInts);
     hidl_handle bufferInfo = buildBufferInfo(bufferInfoStorage, node->id(), clientStateMask,
-                                             node->user_metadata_size(),
-                                             node->metadata().ashmem_fd(), node->eventFd().get());
+                                             node->userMetadataSize(), node->metadata().ashmemFd(),
+                                             node->eventFd().get());
     BufferTraits bufferTraits = {/*bufferDesc=*/bufferDesc,
-                                 /*bufferHandle=*/hidl_handle(node->buffer_handle()),
+                                 /*bufferHandle=*/hidl_handle(node->bufferHandle()),
                                  /*bufferInfo=*/std::move(bufferInfo)};
 
     _hidl_cb(/*status=*/BufferHubStatus::NO_ERROR, /*bufferClient=*/client,
@@ -231,10 +231,10 @@
     for (auto iter = clientCount.begin(); iter != clientCount.end(); ++iter) {
         const std::shared_ptr<BufferNode> node = std::move(iter->second.first);
         const uint32_t clientCount = iter->second.second;
-        AHardwareBuffer_Desc desc = node->buffer_desc();
+        AHardwareBuffer_Desc desc = node->bufferDesc();
 
         MetadataHeader* metadataHeader =
-                const_cast<BufferHubMetadata*>(&node->metadata())->metadata_header();
+                const_cast<BufferHubMetadata*>(&node->metadata())->metadataHeader();
         const uint32_t state = metadataHeader->buffer_state.load(std::memory_order_acquire);
         const uint64_t index = metadataHeader->queue_index;
 
diff --git a/services/bufferhub/BufferNode.cpp b/services/bufferhub/BufferNode.cpp
index 5106390..4f877b2 100644
--- a/services/bufferhub/BufferNode.cpp
+++ b/services/bufferhub/BufferNode.cpp
@@ -11,20 +11,19 @@
 namespace V1_0 {
 namespace implementation {
 
-void BufferNode::InitializeMetadata() {
+void BufferNode::initializeMetadata() {
     // Using placement new here to reuse shared memory instead of new allocation
     // Initialize the atomic variables to zero.
-    BufferHubDefs::MetadataHeader* metadata_header = metadata_.metadata_header();
-    buffer_state_ = new (&metadata_header->buffer_state) std::atomic<uint32_t>(0);
-    fence_state_ = new (&metadata_header->fence_state) std::atomic<uint32_t>(0);
-    active_clients_bit_mask_ =
-            new (&metadata_header->active_clients_bit_mask) std::atomic<uint32_t>(0);
+    BufferHubDefs::MetadataHeader* metadataHeader = mMetadata.metadataHeader();
+    mBufferState = new (&metadataHeader->buffer_state) std::atomic<uint32_t>(0);
+    mFenceState = new (&metadataHeader->fence_state) std::atomic<uint32_t>(0);
+    mActiveClientsBitMask = new (&metadataHeader->active_clients_bit_mask) std::atomic<uint32_t>(0);
     // The C++ standard recommends (but does not require) that lock-free atomic operations are
     // also address-free, that is, suitable for communication between processes using shared
     // memory.
-    LOG_ALWAYS_FATAL_IF(!std::atomic_is_lock_free(buffer_state_) ||
-                                !std::atomic_is_lock_free(fence_state_) ||
-                                !std::atomic_is_lock_free(active_clients_bit_mask_),
+    LOG_ALWAYS_FATAL_IF(!std::atomic_is_lock_free(mBufferState) ||
+                                !std::atomic_is_lock_free(mFenceState) ||
+                                !std::atomic_is_lock_free(mActiveClientsBitMask),
                         "Atomic variables in ashmen are not lock free.");
 }
 
@@ -38,35 +37,35 @@
     // hardcoded service name "bufferhub".
     int ret = GraphicBufferAllocator::get().allocate(width, height, format, layer_count, usage,
                                                      const_cast<const native_handle_t**>(
-                                                             &buffer_handle_),
+                                                             &mBufferHandle),
                                                      &out_stride,
                                                      /*graphicBufferId=*/0,
                                                      /*requestor=*/"bufferhub");
 
-    if (ret != OK || buffer_handle_ == nullptr) {
+    if (ret != OK || mBufferHandle == nullptr) {
         ALOGE("%s: Failed to allocate buffer: %s", __FUNCTION__, strerror(-ret));
         return;
     }
 
-    buffer_desc_.width = width;
-    buffer_desc_.height = height;
-    buffer_desc_.layers = layer_count;
-    buffer_desc_.format = format;
-    buffer_desc_.usage = usage;
-    buffer_desc_.stride = out_stride;
+    mBufferDesc.width = width;
+    mBufferDesc.height = height;
+    mBufferDesc.layers = layer_count;
+    mBufferDesc.format = format;
+    mBufferDesc.usage = usage;
+    mBufferDesc.stride = out_stride;
 
-    metadata_ = BufferHubMetadata::Create(user_metadata_size);
-    if (!metadata_.IsValid()) {
+    mMetadata = BufferHubMetadata::create(user_metadata_size);
+    if (!mMetadata.isValid()) {
         ALOGE("%s: Failed to allocate metadata.", __FUNCTION__);
         return;
     }
-    InitializeMetadata();
+    initializeMetadata();
 }
 
 BufferNode::~BufferNode() {
     // Free the handle
-    if (buffer_handle_ != nullptr) {
-        status_t ret = GraphicBufferAllocator::get().free(buffer_handle_);
+    if (mBufferHandle != nullptr) {
+        status_t ret = GraphicBufferAllocator::get().free(mBufferHandle);
         if (ret != OK) {
             ALOGE("%s: Failed to free handle; Got error: %d", __FUNCTION__, ret);
         }
@@ -78,33 +77,33 @@
     }
 }
 
-uint32_t BufferNode::GetActiveClientsBitMask() const {
-    return active_clients_bit_mask_->load(std::memory_order_acquire);
+uint32_t BufferNode::getActiveClientsBitMask() const {
+    return mActiveClientsBitMask->load(std::memory_order_acquire);
 }
 
-uint32_t BufferNode::AddNewActiveClientsBitToMask() {
-    uint32_t current_active_clients_bit_mask = GetActiveClientsBitMask();
+uint32_t BufferNode::addNewActiveClientsBitToMask() {
+    uint32_t currentActiveClientsBitMask = getActiveClientsBitMask();
     uint32_t client_state_mask = 0U;
-    uint32_t updated_active_clients_bit_mask = 0U;
+    uint32_t updatedActiveClientsBitMask = 0U;
     do {
         client_state_mask =
-                BufferHubDefs::FindNextAvailableClientStateMask(current_active_clients_bit_mask);
+                BufferHubDefs::findNextAvailableClientStateMask(currentActiveClientsBitMask);
         if (client_state_mask == 0U) {
             ALOGE("%s: reached the maximum number of channels per buffer node: %d.", __FUNCTION__,
                   BufferHubDefs::kMaxNumberOfClients);
             errno = E2BIG;
             return 0U;
         }
-        updated_active_clients_bit_mask = current_active_clients_bit_mask | client_state_mask;
-    } while (!(active_clients_bit_mask_->compare_exchange_weak(current_active_clients_bit_mask,
-                                                               updated_active_clients_bit_mask,
-                                                               std::memory_order_acq_rel,
-                                                               std::memory_order_acquire)));
+        updatedActiveClientsBitMask = currentActiveClientsBitMask | client_state_mask;
+    } while (!(mActiveClientsBitMask->compare_exchange_weak(currentActiveClientsBitMask,
+                                                            updatedActiveClientsBitMask,
+                                                            std::memory_order_acq_rel,
+                                                            std::memory_order_acquire)));
     return client_state_mask;
 }
 
-void BufferNode::RemoveClientsBitFromMask(const uint32_t& value) {
-    active_clients_bit_mask_->fetch_and(~value);
+void BufferNode::removeClientsBitFromMask(const uint32_t& value) {
+    mActiveClientsBitMask->fetch_and(~value);
 }
 
 } // namespace implementation
diff --git a/services/bufferhub/include/bufferhub/BufferNode.h b/services/bufferhub/include/bufferhub/BufferNode.h
index 4729e1c..04970fd 100644
--- a/services/bufferhub/include/bufferhub/BufferNode.h
+++ b/services/bufferhub/include/bufferhub/BufferNode.h
@@ -22,73 +22,73 @@
     ~BufferNode();
 
     // Returns whether the object holds a valid metadata.
-    bool IsValid() const { return metadata_.IsValid(); }
+    bool isValid() const { return mMetadata.isValid(); }
 
     int id() const { return mId; }
 
-    size_t user_metadata_size() const { return metadata_.user_metadata_size(); }
+    size_t userMetadataSize() const { return mMetadata.userMetadataSize(); }
 
     // Accessors of the buffer description and handle
-    const native_handle_t* buffer_handle() const { return buffer_handle_; }
-    const AHardwareBuffer_Desc& buffer_desc() const { return buffer_desc_; }
+    const native_handle_t* bufferHandle() const { return mBufferHandle; }
+    const AHardwareBuffer_Desc& bufferDesc() const { return mBufferDesc; }
 
     // Accessor of event fd.
     const BufferHubEventFd& eventFd() const { return mEventFd; }
 
-    // Accessors of metadata.
-    const BufferHubMetadata& metadata() const { return metadata_; }
+    // Accessors of mMetadata.
+    const BufferHubMetadata& metadata() const { return mMetadata; }
 
-    // Gets the current value of active_clients_bit_mask in metadata_ with
+    // Gets the current value of mActiveClientsBitMask in mMetadata with
     // std::memory_order_acquire, so that all previous releases of
-    // active_clients_bit_mask from all threads will be returned here.
-    uint32_t GetActiveClientsBitMask() const;
+    // mActiveClientsBitMask from all threads will be returned here.
+    uint32_t getActiveClientsBitMask() const;
 
-    // Find and add a new client_state_mask to active_clients_bit_mask in
-    // metadata_.
-    // Return the new client_state_mask that is added to active_clients_bit_mask.
+    // Find and add a new client state mask to mActiveClientsBitMask in
+    // mMetadata.
+    // Return the new client state mask that is added to mActiveClientsBitMask.
     // Return 0U if there are already 16 clients of the buffer.
-    uint32_t AddNewActiveClientsBitToMask();
+    uint32_t addNewActiveClientsBitToMask();
 
-    // Removes the value from active_clients_bit_mask in metadata_ with
+    // Removes the value from active_clients_bit_mask in mMetadata with
     // std::memory_order_release, so that the change will be visible to any
-    // acquire of active_clients_bit_mask_ in any threads after the succeed of
+    // acquire of mActiveClientsBitMask in any threads after the succeed of
     // this operation.
-    void RemoveClientsBitFromMask(const uint32_t& value);
+    void removeClientsBitFromMask(const uint32_t& value);
 
 private:
     // Helper method for constructors to initialize atomic metadata header
     // variables in shared memory.
-    void InitializeMetadata();
+    void initializeMetadata();
 
     // Gralloc buffer handles.
-    native_handle_t* buffer_handle_;
-    AHardwareBuffer_Desc buffer_desc_;
+    native_handle_t* mBufferHandle;
+    AHardwareBuffer_Desc mBufferDesc;
 
     // Eventfd used for signalling buffer events among the clients of the buffer.
     BufferHubEventFd mEventFd;
 
     // Metadata in shared memory.
-    BufferHubMetadata metadata_;
+    BufferHubMetadata mMetadata;
 
     // A system-unique id generated by bufferhub from 0 to std::numeric_limits<int>::max().
     // BufferNodes not created by bufferhub will have id < 0, meaning "not specified".
     // TODO(b/118891412): remove default id = -1 and update comments after pdx is no longer in use
     const int mId = -1;
 
-    // The following variables are atomic variables in metadata_ that are visible
+    // The following variables are atomic variables in mMetadata that are visible
     // to Bn object and Bp objects. Please find more info in
     // BufferHubDefs::MetadataHeader.
 
-    // buffer_state_ tracks the state of the buffer. Buffer can be in one of these
+    // mBufferState tracks the state of the buffer. Buffer can be in one of these
     // four states: gained, posted, acquired, released.
-    std::atomic<uint32_t>* buffer_state_ = nullptr;
+    std::atomic<uint32_t>* mBufferState = nullptr;
 
-    // TODO(b/112012161): add comments to fence_state_.
-    std::atomic<uint32_t>* fence_state_ = nullptr;
+    // TODO(b/112012161): add comments to mFenceState.
+    std::atomic<uint32_t>* mFenceState = nullptr;
 
-    // active_clients_bit_mask_ tracks all the bp clients of the buffer. It is the
+    // mActiveClientsBitMask tracks all the bp clients of the buffer. It is the
     // union of all client_state_mask of all bp clients.
-    std::atomic<uint32_t>* active_clients_bit_mask_ = nullptr;
+    std::atomic<uint32_t>* mActiveClientsBitMask = nullptr;
 };
 
 } // namespace implementation
diff --git a/services/bufferhub/tests/BufferNode_test.cpp b/services/bufferhub/tests/BufferNode_test.cpp
index ccb1197..b9f1c81 100644
--- a/services/bufferhub/tests/BufferNode_test.cpp
+++ b/services/bufferhub/tests/BufferNode_test.cpp
@@ -28,7 +28,7 @@
     void SetUp() override {
         buffer_node =
                 new BufferNode(kWidth, kHeight, kLayerCount, kFormat, kUsage, kUserMetadataSize);
-        ASSERT_TRUE(buffer_node->IsValid());
+        ASSERT_TRUE(buffer_node->isValid());
     }
 
     void TearDown() override {
@@ -41,65 +41,64 @@
 };
 
 TEST_F(BufferNodeTest, TestCreateBufferNode) {
-    EXPECT_EQ(buffer_node->user_metadata_size(), kUserMetadataSize);
+    EXPECT_EQ(buffer_node->userMetadataSize(), kUserMetadataSize);
     // Test the handle just allocated is good (i.e. able to be imported)
     GraphicBufferMapper& mapper = GraphicBufferMapper::get();
     const native_handle_t* outHandle;
     status_t ret =
-            mapper.importBuffer(buffer_node->buffer_handle(), buffer_node->buffer_desc().width,
-                                buffer_node->buffer_desc().height,
-                                buffer_node->buffer_desc().layers,
-                                buffer_node->buffer_desc().format, buffer_node->buffer_desc().usage,
-                                buffer_node->buffer_desc().stride, &outHandle);
+            mapper.importBuffer(buffer_node->bufferHandle(), buffer_node->bufferDesc().width,
+                                buffer_node->bufferDesc().height, buffer_node->bufferDesc().layers,
+                                buffer_node->bufferDesc().format, buffer_node->bufferDesc().usage,
+                                buffer_node->bufferDesc().stride, &outHandle);
     EXPECT_EQ(ret, OK);
     EXPECT_THAT(outHandle, NotNull());
 }
 
-TEST_F(BufferNodeTest, TestAddNewActiveClientsBitToMask_twoNewClients) {
-    uint32_t new_client_state_mask_1 = buffer_node->AddNewActiveClientsBitToMask();
-    EXPECT_EQ(buffer_node->GetActiveClientsBitMask(), new_client_state_mask_1);
+TEST_F(BufferNodeTest, TestaddNewActiveClientsBitToMask_twoNewClients) {
+    uint32_t new_client_state_mask_1 = buffer_node->addNewActiveClientsBitToMask();
+    EXPECT_EQ(buffer_node->getActiveClientsBitMask(), new_client_state_mask_1);
 
     // Request and add a new client_state_mask again.
     // Active clients bit mask should be the union of the two new
     // client_state_masks.
-    uint32_t new_client_state_mask_2 = buffer_node->AddNewActiveClientsBitToMask();
-    EXPECT_EQ(buffer_node->GetActiveClientsBitMask(),
+    uint32_t new_client_state_mask_2 = buffer_node->addNewActiveClientsBitToMask();
+    EXPECT_EQ(buffer_node->getActiveClientsBitMask(),
               new_client_state_mask_1 | new_client_state_mask_2);
 }
 
-TEST_F(BufferNodeTest, TestAddNewActiveClientsBitToMask_32NewClients) {
+TEST_F(BufferNodeTest, TestaddNewActiveClientsBitToMask_32NewClients) {
     uint32_t new_client_state_mask = 0U;
     uint32_t current_mask = 0U;
     uint32_t expected_mask = 0U;
 
     for (int i = 0; i < BufferHubDefs::kMaxNumberOfClients; ++i) {
-        new_client_state_mask = buffer_node->AddNewActiveClientsBitToMask();
+        new_client_state_mask = buffer_node->addNewActiveClientsBitToMask();
         EXPECT_NE(new_client_state_mask, 0U);
         EXPECT_FALSE(new_client_state_mask & current_mask);
         expected_mask = current_mask | new_client_state_mask;
-        current_mask = buffer_node->GetActiveClientsBitMask();
+        current_mask = buffer_node->getActiveClientsBitMask();
         EXPECT_EQ(current_mask, expected_mask);
     }
 
     // Method should fail upon requesting for more than maximum allowable clients.
-    new_client_state_mask = buffer_node->AddNewActiveClientsBitToMask();
+    new_client_state_mask = buffer_node->addNewActiveClientsBitToMask();
     EXPECT_EQ(new_client_state_mask, 0U);
     EXPECT_EQ(errno, E2BIG);
 }
 
 TEST_F(BufferNodeTest, TestRemoveActiveClientsBitFromMask) {
-    buffer_node->AddNewActiveClientsBitToMask();
-    uint32_t current_mask = buffer_node->GetActiveClientsBitMask();
-    uint32_t new_client_state_mask = buffer_node->AddNewActiveClientsBitToMask();
-    EXPECT_NE(buffer_node->GetActiveClientsBitMask(), current_mask);
+    buffer_node->addNewActiveClientsBitToMask();
+    uint32_t current_mask = buffer_node->getActiveClientsBitMask();
+    uint32_t new_client_state_mask = buffer_node->addNewActiveClientsBitToMask();
+    EXPECT_NE(buffer_node->getActiveClientsBitMask(), current_mask);
 
-    buffer_node->RemoveClientsBitFromMask(new_client_state_mask);
-    EXPECT_EQ(buffer_node->GetActiveClientsBitMask(), current_mask);
+    buffer_node->removeClientsBitFromMask(new_client_state_mask);
+    EXPECT_EQ(buffer_node->getActiveClientsBitMask(), current_mask);
 
     // Remove the test_mask again to the active client bit mask should not modify
     // the value of active clients bit mask.
-    buffer_node->RemoveClientsBitFromMask(new_client_state_mask);
-    EXPECT_EQ(buffer_node->GetActiveClientsBitMask(), current_mask);
+    buffer_node->removeClientsBitFromMask(new_client_state_mask);
+    EXPECT_EQ(buffer_node->getActiveClientsBitMask(), current_mask);
 }
 
 } // namespace
diff --git a/services/inputflinger/BlockingQueue.h b/services/inputflinger/BlockingQueue.h
index b892120..c9eb683 100644
--- a/services/inputflinger/BlockingQueue.h
+++ b/services/inputflinger/BlockingQueue.h
@@ -80,6 +80,16 @@
         mQueue.clear();
     };
 
+    /**
+     * How many elements are currently stored in the queue.
+     * Primary used for debugging.
+     * Does not block.
+     */
+    size_t size() {
+        std::scoped_lock lock(mLock);
+        return mQueue.size();
+    }
+
 private:
     size_t mCapacity;
     /**
diff --git a/services/inputflinger/InputClassifier.cpp b/services/inputflinger/InputClassifier.cpp
index 7ade0d4..09a004c 100644
--- a/services/inputflinger/InputClassifier.cpp
+++ b/services/inputflinger/InputClassifier.cpp
@@ -19,6 +19,7 @@
 #include "InputClassifier.h"
 
 #include <algorithm>
+#include <android-base/stringprintf.h>
 #include <cmath>
 #include <inttypes.h>
 #include <log/log.h>
@@ -26,9 +27,17 @@
     #include <pthread.h>
 #endif
 #include <server_configurable_flags/get_flags.h>
+#include <unordered_set>
 
 #include <android/hardware/input/classifier/1.0/IInputClassifier.h>
 
+#define INDENT1 "  "
+#define INDENT2 "    "
+#define INDENT3 "      "
+#define INDENT4 "        "
+#define INDENT5 "          "
+
+using android::base::StringPrintf;
 using android::hardware::hidl_bitfield;
 using android::hardware::hidl_vec;
 using namespace android::hardware::input;
@@ -646,6 +655,30 @@
     mEvents.push(std::make_unique<NotifyDeviceResetArgs>(args));
 }
 
+void MotionClassifier::dump(std::string& dump) {
+    std::scoped_lock lock(mLock);
+    std::string serviceStatus = mService->ping().isOk() ? "running" : " not responding";
+    dump += StringPrintf(INDENT2 "mService status: %s\n", serviceStatus.c_str());
+    dump += StringPrintf(INDENT2 "mEvents: %zu element(s) (max=%zu)\n",
+            mEvents.size(), MAX_EVENTS);
+    dump += INDENT2 "mClassifications, mLastDownTimes:\n";
+    dump += INDENT3 "Device Id\tClassification\tLast down time";
+    // Combine mClassifications and mLastDownTimes into a single table.
+    // Create a superset of device ids.
+    std::unordered_set<int32_t> deviceIds;
+    std::for_each(mClassifications.begin(), mClassifications.end(),
+            [&deviceIds](auto pair){ deviceIds.insert(pair.first); });
+    std::for_each(mLastDownTimes.begin(), mLastDownTimes.end(),
+            [&deviceIds](auto pair){ deviceIds.insert(pair.first); });
+    for(int32_t deviceId : deviceIds) {
+        const MotionClassification classification =
+                getValueForKey(mClassifications, deviceId, MotionClassification::NONE);
+        const nsecs_t downTime = getValueForKey(mLastDownTimes, deviceId, static_cast<nsecs_t>(0));
+        dump += StringPrintf("\n" INDENT4 "%" PRId32 "\t%s\t%" PRId64,
+                deviceId, motionClassificationToString(classification), downTime);
+    }
+}
+
 // --- InputClassifier ---
 
 InputClassifier::InputClassifier(const sp<InputListenerInterface>& listener) :
@@ -694,4 +727,16 @@
     mListener->notifyDeviceReset(args);
 }
 
+void InputClassifier::dump(std::string& dump) {
+    dump += "Input Classifier State:\n";
+
+    dump += INDENT1 "Motion Classifier:\n";
+    if (mMotionClassifier) {
+        mMotionClassifier->dump(dump);
+    } else {
+        dump += INDENT2 "<nullptr>";
+    }
+    dump += "\n";
+}
+
 } // namespace android
\ No newline at end of file
diff --git a/services/inputflinger/InputClassifier.h b/services/inputflinger/InputClassifier.h
index cb46494..4b9dae2 100644
--- a/services/inputflinger/InputClassifier.h
+++ b/services/inputflinger/InputClassifier.h
@@ -70,6 +70,11 @@
     virtual MotionClassification classify(const NotifyMotionArgs& args) = 0;
     virtual void reset() = 0;
     virtual void reset(const NotifyDeviceResetArgs& args) = 0;
+
+    /**
+     * Dump the state of the motion classifier
+     */
+    virtual void dump(std::string& dump) = 0;
 };
 
 /**
@@ -77,6 +82,12 @@
  * Provides classification to events.
  */
 class InputClassifierInterface : public virtual RefBase, public InputListenerInterface {
+public:
+    /**
+     * Dump the state of the input classifier.
+     * This method may be called on any thread (usually by the input manager).
+     */
+    virtual void dump(std::string& dump) = 0;
 protected:
     InputClassifierInterface() { }
     virtual ~InputClassifierInterface() { }
@@ -110,6 +121,8 @@
     virtual void reset() override;
     virtual void reset(const NotifyDeviceResetArgs& args) override;
 
+    virtual void dump(std::string& dump) override;
+
 private:
     // The events that need to be sent to the HAL.
     BlockingQueue<ClassifierEvent> mEvents;
@@ -186,6 +199,8 @@
     virtual void notifySwitch(const NotifySwitchArgs* args) override;
     virtual void notifyDeviceReset(const NotifyDeviceResetArgs* args) override;
 
+    virtual void dump(std::string& dump) override;
+
 private:
     std::unique_ptr<MotionClassifierInterface> mMotionClassifier = nullptr;
     // The next stage to pass input events to
diff --git a/services/inputflinger/InputListener.cpp b/services/inputflinger/InputListener.cpp
index e537e09..a403f31 100644
--- a/services/inputflinger/InputListener.cpp
+++ b/services/inputflinger/InputListener.cpp
@@ -28,12 +28,12 @@
 
 NotifyConfigurationChangedArgs::NotifyConfigurationChangedArgs(
         uint32_t sequenceNum, nsecs_t eventTime) :
-        NotifyArgs(sequenceNum), eventTime(eventTime) {
+        NotifyArgs(sequenceNum, eventTime) {
 }
 
 NotifyConfigurationChangedArgs::NotifyConfigurationChangedArgs(
         const NotifyConfigurationChangedArgs& other) :
-        NotifyArgs(other.sequenceNum), eventTime(other.eventTime) {
+        NotifyArgs(other.sequenceNum, other.eventTime) {
 }
 
 bool NotifyConfigurationChangedArgs::operator==(const NotifyConfigurationChangedArgs& rhs) const {
@@ -51,14 +51,14 @@
         uint32_t source, int32_t displayId, uint32_t policyFlags,
         int32_t action, int32_t flags, int32_t keyCode, int32_t scanCode,
         int32_t metaState, nsecs_t downTime) :
-        NotifyArgs(sequenceNum), eventTime(eventTime), deviceId(deviceId), source(source),
+        NotifyArgs(sequenceNum, eventTime), deviceId(deviceId), source(source),
         displayId(displayId), policyFlags(policyFlags),
         action(action), flags(flags), keyCode(keyCode), scanCode(scanCode),
         metaState(metaState), downTime(downTime) {
 }
 
 NotifyKeyArgs::NotifyKeyArgs(const NotifyKeyArgs& other) :
-        NotifyArgs(other.sequenceNum), eventTime(other.eventTime), deviceId(other.deviceId),
+        NotifyArgs(other.sequenceNum, other.eventTime), deviceId(other.deviceId),
         source(other.source), displayId(other.displayId), policyFlags(other.policyFlags),
         action(other.action), flags(other.flags),
         keyCode(other.keyCode), scanCode(other.scanCode),
@@ -95,7 +95,7 @@
         const PointerProperties* pointerProperties, const PointerCoords* pointerCoords,
         float xPrecision, float yPrecision, nsecs_t downTime,
         const std::vector<TouchVideoFrame>& videoFrames) :
-        NotifyArgs(sequenceNum), eventTime(eventTime), deviceId(deviceId), source(source),
+        NotifyArgs(sequenceNum, eventTime), deviceId(deviceId), source(source),
         displayId(displayId), policyFlags(policyFlags),
         action(action), actionButton(actionButton),
         flags(flags), metaState(metaState), buttonState(buttonState),
@@ -110,7 +110,7 @@
 }
 
 NotifyMotionArgs::NotifyMotionArgs(const NotifyMotionArgs& other) :
-        NotifyArgs(other.sequenceNum), eventTime(other.eventTime), deviceId(other.deviceId),
+        NotifyArgs(other.sequenceNum, other.eventTime), deviceId(other.deviceId),
         source(other.source), displayId(other.displayId), policyFlags(other.policyFlags),
         action(other.action), actionButton(other.actionButton), flags(other.flags),
         metaState(other.metaState), buttonState(other.buttonState),
@@ -170,12 +170,12 @@
 
 NotifySwitchArgs::NotifySwitchArgs(uint32_t sequenceNum, nsecs_t eventTime, uint32_t policyFlags,
         uint32_t switchValues, uint32_t switchMask) :
-        NotifyArgs(sequenceNum), eventTime(eventTime), policyFlags(policyFlags),
+        NotifyArgs(sequenceNum, eventTime), policyFlags(policyFlags),
         switchValues(switchValues), switchMask(switchMask) {
 }
 
 NotifySwitchArgs::NotifySwitchArgs(const NotifySwitchArgs& other) :
-        NotifyArgs(other.sequenceNum), eventTime(other.eventTime), policyFlags(other.policyFlags),
+        NotifyArgs(other.sequenceNum, other.eventTime), policyFlags(other.policyFlags),
         switchValues(other.switchValues), switchMask(other.switchMask) {
 }
 
@@ -196,11 +196,11 @@
 
 NotifyDeviceResetArgs::NotifyDeviceResetArgs(
         uint32_t sequenceNum, nsecs_t eventTime, int32_t deviceId) :
-        NotifyArgs(sequenceNum), eventTime(eventTime), deviceId(deviceId) {
+        NotifyArgs(sequenceNum, eventTime), deviceId(deviceId) {
 }
 
 NotifyDeviceResetArgs::NotifyDeviceResetArgs(const NotifyDeviceResetArgs& other) :
-        NotifyArgs(other.sequenceNum), eventTime(other.eventTime), deviceId(other.deviceId) {
+        NotifyArgs(other.sequenceNum, other.eventTime), deviceId(other.deviceId) {
 }
 
 bool NotifyDeviceResetArgs::operator==(const NotifyDeviceResetArgs& rhs) const {
diff --git a/services/inputflinger/InputManager.cpp b/services/inputflinger/InputManager.cpp
index b3b9e3e..a7fd9ba 100644
--- a/services/inputflinger/InputManager.cpp
+++ b/services/inputflinger/InputManager.cpp
@@ -84,6 +84,10 @@
     return mReader;
 }
 
+sp<InputClassifierInterface> InputManager::getClassifier() {
+    return mClassifier;
+}
+
 sp<InputDispatcherInterface> InputManager::getDispatcher() {
     return mDispatcher;
 }
diff --git a/services/inputflinger/InputManager.h b/services/inputflinger/InputManager.h
index 142ec0c..e632da3 100644
--- a/services/inputflinger/InputManager.h
+++ b/services/inputflinger/InputManager.h
@@ -90,6 +90,7 @@
     virtual status_t stop();
 
     virtual sp<InputReaderInterface> getReader();
+    virtual sp<InputClassifierInterface> getClassifier();
     virtual sp<InputDispatcherInterface> getDispatcher();
 
     virtual void setInputWindows(const Vector<InputWindowInfo>& handles);
diff --git a/services/inputflinger/include/TouchVideoDevice.h b/services/inputflinger/TouchVideoDevice.h
similarity index 96%
rename from services/inputflinger/include/TouchVideoDevice.h
rename to services/inputflinger/TouchVideoDevice.h
index 7ff2653..3d5c8c6 100644
--- a/services/inputflinger/include/TouchVideoDevice.h
+++ b/services/inputflinger/TouchVideoDevice.h
@@ -73,6 +73,8 @@
     size_t readAndQueueFrames();
     /**
      * Return all of the queued frames, and erase them from the local buffer.
+     * The returned frames are in the order that they were received from the
+     * v4l2 device, with the oldest frame at the index 0.
      */
     std::vector<TouchVideoFrame> consumeFrames();
     /**
diff --git a/services/inputflinger/include/InputListener.h b/services/inputflinger/include/InputListener.h
index 13ae7dd..cd8caf7 100644
--- a/services/inputflinger/include/InputListener.h
+++ b/services/inputflinger/include/InputListener.h
@@ -32,10 +32,12 @@
 /* Superclass of all input event argument objects */
 struct NotifyArgs {
     uint32_t sequenceNum;
+    nsecs_t eventTime;
 
-    inline NotifyArgs() : sequenceNum(0) { }
+    inline NotifyArgs() : sequenceNum(0), eventTime(0) { }
 
-    inline explicit NotifyArgs(uint32_t sequenceNum) : sequenceNum(sequenceNum) { }
+    inline explicit NotifyArgs(uint32_t sequenceNum, nsecs_t eventTime) :
+            sequenceNum(sequenceNum), eventTime(eventTime) { }
 
     virtual ~NotifyArgs() { }
 
@@ -45,7 +47,6 @@
 
 /* Describes a configuration change event. */
 struct NotifyConfigurationChangedArgs : public NotifyArgs {
-    nsecs_t eventTime;
 
     inline NotifyConfigurationChangedArgs() { }
 
@@ -63,7 +64,6 @@
 
 /* Describes a key event. */
 struct NotifyKeyArgs : public NotifyArgs {
-    nsecs_t eventTime;
     int32_t deviceId;
     uint32_t source;
     int32_t displayId;
@@ -93,7 +93,6 @@
 
 /* Describes a motion event. */
 struct NotifyMotionArgs : public NotifyArgs {
-    nsecs_t eventTime;
     int32_t deviceId;
     uint32_t source;
     int32_t displayId;
@@ -146,7 +145,6 @@
 
 /* Describes a switch event. */
 struct NotifySwitchArgs : public NotifyArgs {
-    nsecs_t eventTime;
     uint32_t policyFlags;
     uint32_t switchValues;
     uint32_t switchMask;
@@ -169,7 +167,6 @@
 /* Describes a device reset event, such as when a device is added,
  * reconfigured, or removed. */
 struct NotifyDeviceResetArgs : public NotifyArgs {
-    nsecs_t eventTime;
     int32_t deviceId;
 
     inline NotifyDeviceResetArgs() { }
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 5f6d2a7..46e587d 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -681,7 +681,7 @@
     }
 
     // This gives us only the "orientation" component of the transform
-    const State& s(getCurrentState());
+    const State& s(getDrawingState());
 
     // Apply the layer's transform, followed by the display's global transform
     // Here we're guaranteed that the layer's transform preserves rects
diff --git a/services/surfaceflinger/OWNERS b/services/surfaceflinger/OWNERS
index dc2b300..ce0611c 100644
--- a/services/surfaceflinger/OWNERS
+++ b/services/surfaceflinger/OWNERS
@@ -1,3 +1,4 @@
+akrulec@google.com
 chaviw@google.com
 lpy@google.com
 marissaw@google.com
diff --git a/services/surfaceflinger/TimeStats/OWNERS b/services/surfaceflinger/TimeStats/OWNERS
new file mode 100644
index 0000000..ac02d12
--- /dev/null
+++ b/services/surfaceflinger/TimeStats/OWNERS
@@ -0,0 +1 @@
+zzyiwei@google.com
\ No newline at end of file
diff --git a/services/vr/bufferhubd/producer_channel.cpp b/services/vr/bufferhubd/producer_channel.cpp
index 164d9e6..f3e54a0 100644
--- a/services/vr/bufferhubd/producer_channel.cpp
+++ b/services/vr/bufferhubd/producer_channel.cpp
@@ -253,7 +253,7 @@
   uint32_t current_active_clients_bit_mask =
       active_clients_bit_mask_->load(std::memory_order_acquire);
   uint32_t consumer_state_mask =
-      BufferHubDefs::FindNextAvailableClientStateMask(
+      BufferHubDefs::findNextAvailableClientStateMask(
           current_active_clients_bit_mask | orphaned_consumer_bit_mask_);
   if (consumer_state_mask == 0U) {
     ALOGE("%s: reached the maximum mumber of consumers per producer: 63.",
@@ -279,7 +279,7 @@
           "condition.",
           __FUNCTION__, updated_active_clients_bit_mask,
           current_active_clients_bit_mask);
-    consumer_state_mask = BufferHubDefs::FindNextAvailableClientStateMask(
+    consumer_state_mask = BufferHubDefs::findNextAvailableClientStateMask(
         current_active_clients_bit_mask | orphaned_consumer_bit_mask_);
     if (consumer_state_mask == 0U) {
       ALOGE("%s: reached the maximum mumber of consumers per producer: %d.",
@@ -337,13 +337,13 @@
   // consumer to a buffer that is available to producer (a.k.a a fully-released
   // buffer) or a gained buffer.
   if (current_buffer_state == 0U ||
-      BufferHubDefs::AnyClientGained(current_buffer_state)) {
+      BufferHubDefs::isAnyClientGained(current_buffer_state)) {
     return {status.take()};
   }
 
   // Signal the new consumer when adding it to a posted producer.
   bool update_buffer_state = true;
-  if (!BufferHubDefs::IsClientPosted(current_buffer_state,
+  if (!BufferHubDefs::isClientPosted(current_buffer_state,
                                      consumer_state_mask)) {
     uint32_t updated_buffer_state =
         current_buffer_state ^
@@ -360,7 +360,7 @@
           "released.",
           __FUNCTION__, current_buffer_state, updated_buffer_state);
       if (current_buffer_state == 0U ||
-          BufferHubDefs::AnyClientGained(current_buffer_state)) {
+          BufferHubDefs::isAnyClientGained(current_buffer_state)) {
         ALOGI("%s: buffer is gained or fully released, state=%" PRIx32 ".",
               __FUNCTION__, current_buffer_state);
         update_buffer_state = false;
@@ -371,7 +371,7 @@
           (consumer_state_mask & BufferHubDefs::kHighBitsMask);
     }
   }
-  if (update_buffer_state || BufferHubDefs::IsClientPosted(
+  if (update_buffer_state || BufferHubDefs::isClientPosted(
                                  buffer_state_->load(std::memory_order_acquire),
                                  consumer_state_mask)) {
     consumer->OnProducerPosted();
@@ -457,7 +457,7 @@
            buffer_id());
 
   uint32_t buffer_state = buffer_state_->load(std::memory_order_acquire);
-  if (!BufferHubDefs::IsClientGained(
+  if (!BufferHubDefs::isClientGained(
       buffer_state, BufferHubDefs::kFirstClientStateMask)) {
     // Can only detach a ProducerBuffer when it's in gained state.
     ALOGW(
@@ -616,9 +616,9 @@
 
   const uint32_t current_buffer_state =
       buffer_state_->load(std::memory_order_acquire);
-  if (BufferHubDefs::IsClientPosted(current_buffer_state,
+  if (BufferHubDefs::isClientPosted(current_buffer_state,
                                     consumer_state_mask) ||
-      BufferHubDefs::IsClientAcquired(current_buffer_state,
+      BufferHubDefs::isClientAcquired(current_buffer_state,
                                       consumer_state_mask)) {
     // The consumer client is being destoryed without releasing. This could
     // happen in corner cases when the consumer crashes. Here we mark it
@@ -627,9 +627,9 @@
     return;
   }
 
-  if (BufferHubDefs::IsClientReleased(current_buffer_state,
+  if (BufferHubDefs::isClientReleased(current_buffer_state,
                                       consumer_state_mask) ||
-      BufferHubDefs::AnyClientGained(current_buffer_state)) {
+      BufferHubDefs::isAnyClientGained(current_buffer_state)) {
     // The consumer is being close while it is suppose to signal a release
     // fence. Signal the dummy fence here.
     if (fence_state_->load(std::memory_order_acquire) & consumer_state_mask) {
diff --git a/services/vr/bufferhubd/producer_queue_channel.cpp b/services/vr/bufferhubd/producer_queue_channel.cpp
index 6b33f50..004dc7c 100644
--- a/services/vr/bufferhubd/producer_queue_channel.cpp
+++ b/services/vr/bufferhubd/producer_queue_channel.cpp
@@ -323,7 +323,7 @@
   // memory to indicate which client is the last producer of the buffer.
   // Currently, the first client is the only producer to the buffer.
   // Thus, it checks whether the first client gains the buffer below.
-  if (!BufferHubDefs::IsClientGained(buffer_state,
+  if (!BufferHubDefs::isClientGained(buffer_state,
                                      BufferHubDefs::kFirstClientBitMask)) {
     // Rejects the request if the requested buffer is not in Gained state.
     ALOGE(