blob: adcb8982a099c112dc4bbaa36cce0e2e2dd9a5ed [file] [log] [blame]
* Copyright (C) 2007 The Android Open Source Project
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#pragma once
#include <stdint.h>
#include <sys/types.h>
#include <set>
#include <unordered_map>
#include <unordered_set>
#include <binder/IBinder.h>
#include <utils/RefBase.h>
#include <utils/Singleton.h>
#include <utils/SortedVector.h>
#include <utils/threads.h>
#include <ui/ConfigStoreTypes.h>
#include <ui/DisplayedFrameStats.h>
#include <ui/FrameStats.h>
#include <ui/GraphicTypes.h>
#include <ui/PixelFormat.h>
#include <ui/Rotation.h>
#include <gui/CpuConsumer.h>
#include <gui/ISurfaceComposer.h>
#include <gui/ITransactionCompletedListener.h>
#include <gui/LayerState.h>
#include <gui/SurfaceControl.h>
#include <math/vec3.h>
namespace android {
class HdrCapabilities;
class ISurfaceComposerClient;
class IGraphicBufferProducer;
class IRegionSamplingListener;
class Region;
struct SurfaceControlStats {
SurfaceControlStats(const sp<SurfaceControl>& sc, nsecs_t latchTime, nsecs_t acquireTime,
const sp<Fence>& presentFence, const sp<Fence>& prevReleaseFence,
uint32_t hint, FrameEventHistoryStats eventStats)
: surfaceControl(sc),
frameEventStats(eventStats) {}
sp<SurfaceControl> surfaceControl;
nsecs_t latchTime = -1;
nsecs_t acquireTime = -1;
sp<Fence> presentFence;
sp<Fence> previousReleaseFence;
uint32_t transformHint = 0;
FrameEventHistoryStats frameEventStats;
using TransactionCompletedCallbackTakesContext =
std::function<void(void* /*context*/, nsecs_t /*latchTime*/,
const sp<Fence>& /*presentFence*/,
const std::vector<SurfaceControlStats>& /*stats*/)>;
using TransactionCompletedCallback =
std::function<void(nsecs_t /*latchTime*/, const sp<Fence>& /*presentFence*/,
const std::vector<SurfaceControlStats>& /*stats*/)>;
// ---------------------------------------------------------------------------
class SurfaceComposerClient : public RefBase
friend class Composer;
SurfaceComposerClient(const sp<ISurfaceComposerClient>& client);
virtual ~SurfaceComposerClient();
// Always make sure we could initialize
status_t initCheck() const;
// Return the connection of this client
sp<IBinder> connection() const;
// Forcibly remove connection before all references have gone away.
void dispose();
// callback when the composer is dies
status_t linkToComposerDeath(const sp<IBinder::DeathRecipient>& recipient,
void* cookie = nullptr, uint32_t flags = 0);
// Get transactional state of given display.
static status_t getDisplayState(const sp<IBinder>& display, ui::DisplayState*);
// Get immutable information about given physical display.
static status_t getDisplayInfo(const sp<IBinder>& display, DisplayInfo*);
// Get configurations supported by given physical display.
static status_t getDisplayConfigs(const sp<IBinder>& display, Vector<DisplayConfig>*);
// Get the ID of the active DisplayConfig, as getDisplayConfigs index.
static int getActiveConfig(const sp<IBinder>& display);
// Shorthand for getDisplayConfigs element at getActiveConfig index.
static status_t getActiveDisplayConfig(const sp<IBinder>& display, DisplayConfig*);
// Sets the refresh rate boundaries for the display.
static status_t setDesiredDisplayConfigSpecs(const sp<IBinder>& displayToken,
int32_t defaultConfig, float primaryRefreshRateMin,
float primaryRefreshRateMax,
float appRequestRefreshRateMin,
float appRequestRefreshRateMax);
// Gets the refresh rate boundaries for the display.
static status_t getDesiredDisplayConfigSpecs(const sp<IBinder>& displayToken,
int32_t* outDefaultConfig,
float* outPrimaryRefreshRateMin,
float* outPrimaryRefreshRateMax,
float* outAppRequestRefreshRateMin,
float* outAppRequestRefreshRateMax);
// Gets the list of supported color modes for the given display
static status_t getDisplayColorModes(const sp<IBinder>& display,
Vector<ui::ColorMode>* outColorModes);
// Get the coordinates of the display's native color primaries
static status_t getDisplayNativePrimaries(const sp<IBinder>& display,
ui::DisplayPrimaries& outPrimaries);
// Gets the active color mode for the given display
static ui::ColorMode getActiveColorMode(const sp<IBinder>& display);
// Sets the active color mode for the given display
static status_t setActiveColorMode(const sp<IBinder>& display,
ui::ColorMode colorMode);
// Reports whether the connected display supports Auto Low Latency Mode
static bool getAutoLowLatencyModeSupport(const sp<IBinder>& display);
// Switches on/off Auto Low Latency Mode on the connected display. This should only be
// called if the connected display supports Auto Low Latency Mode as reported by
// #getAutoLowLatencyModeSupport
static void setAutoLowLatencyMode(const sp<IBinder>& display, bool on);
// Reports whether the connected display supports Game content type
static bool getGameContentTypeSupport(const sp<IBinder>& display);
// Turns Game mode on/off on the connected display. This should only be called
// if the display supports Game content type, as reported by #getGameContentTypeSupport
static void setGameContentType(const sp<IBinder>& display, bool on);
/* Triggers screen on/off or low power mode and waits for it to complete */
static void setDisplayPowerMode(const sp<IBinder>& display, int mode);
/* Returns the composition preference of the default data space and default pixel format,
* as well as the wide color gamut data space and wide color gamut pixel format.
* If the wide color gamut data space is V0_SRGB, then it implies that the platform
* has no wide color gamut support.
static status_t getCompositionPreference(ui::Dataspace* defaultDataspace,
ui::PixelFormat* defaultPixelFormat,
ui::Dataspace* wideColorGamutDataspace,
ui::PixelFormat* wideColorGamutPixelFormat);
* Gets whether SurfaceFlinger can support protected content in GPU composition.
* Requires the ACCESS_SURFACE_FLINGER permission.
static bool getProtectedContentSupport();
* Uncaches a buffer in ISurfaceComposer. It must be uncached via a transaction so that it is
* in order with other transactions that use buffers.
static void doUncacheBufferTransaction(uint64_t cacheId);
// Queries whether a given display is wide color display.
static status_t isWideColorDisplay(const sp<IBinder>& display, bool* outIsWideColorDisplay);
* Returns whether brightness operations are supported on a display.
* displayToken
* The token of the display.
* Returns whether brightness operations are supported on a display or not.
static bool getDisplayBrightnessSupport(const sp<IBinder>& displayToken);
* Sets the brightness of a display.
* displayToken
* The token of the display whose brightness is set.
* brightness
* A number between 0.0 (minimum brightness) and 1.0 (maximum brightness), or -1.0f to
* turn the backlight off.
* Returns NO_ERROR upon success. Otherwise,
* NAME_NOT_FOUND if the display handle is invalid, or
* BAD_VALUE if the brightness value is invalid, or
* INVALID_OPERATION if brightness operaetions are not supported.
static status_t setDisplayBrightness(const sp<IBinder>& displayToken, float brightness);
* Sends a power hint to the composer. This function is asynchronous.
* hintId
* hint id according to android::hardware::power::V1_0::PowerHint
* Returns NO_ERROR upon success.
static status_t notifyPowerHint(int32_t hintId);
* Sets the global configuration for all the shadows drawn by SurfaceFlinger. Shadow follows
* material design guidelines.
* ambientColor
* Color to the ambient shadow. The alpha is premultiplied.
* spotColor
* Color to the spot shadow. The alpha is premultiplied. The position of the spot shadow
* depends on the light position.
* lightPosY/lightPosZ
* Position of the light used to cast the spot shadow. The X value is always the display
* width / 2.
* lightRadius
* Radius of the light casting the shadow.
static status_t setGlobalShadowSettings(const half4& ambientColor, const half4& spotColor,
float lightPosY, float lightPosZ, float lightRadius);
// ------------------------------------------------------------------------
// surface creation / destruction
static sp<SurfaceComposerClient> getDefault();
//! Create a surface
sp<SurfaceControl> createSurface(const String8& name, // name of the surface
uint32_t w, // width in pixel
uint32_t h, // height in pixel
PixelFormat format, // pixel-format desired
uint32_t flags = 0, // usage flags
SurfaceControl* parent = nullptr, // parent
LayerMetadata metadata = LayerMetadata(), // metadata
uint32_t* outTransformHint = nullptr);
status_t createSurfaceChecked(const String8& name, // name of the surface
uint32_t w, // width in pixel
uint32_t h, // height in pixel
PixelFormat format, // pixel-format desired
sp<SurfaceControl>* outSurface,
uint32_t flags = 0, // usage flags
SurfaceControl* parent = nullptr, // parent
LayerMetadata metadata = LayerMetadata(), // metadata
uint32_t* outTransformHint = nullptr);
//! Create a surface
sp<SurfaceControl> createWithSurfaceParent(const String8& name, // name of the surface
uint32_t w, // width in pixel
uint32_t h, // height in pixel
PixelFormat format, // pixel-format desired
uint32_t flags = 0, // usage flags
Surface* parent = nullptr, // parent
LayerMetadata metadata = LayerMetadata(), // metadata
uint32_t* outTransformHint = nullptr);
// Creates a mirrored hierarchy for the mirrorFromSurface. This returns a SurfaceControl
// which is a parent of the root of the mirrored hierarchy.
// Real Hierarchy Mirror
// SC (value that's returned)
// |
// A A'
// | |
// B B'
sp<SurfaceControl> mirrorSurface(SurfaceControl* mirrorFromSurface);
//! Create a virtual display
static sp<IBinder> createDisplay(const String8& displayName, bool secure);
//! Destroy a virtual display
static void destroyDisplay(const sp<IBinder>& display);
//! Get stable IDs for connected physical displays
static std::vector<PhysicalDisplayId> getPhysicalDisplayIds();
static std::optional<PhysicalDisplayId> getInternalDisplayId();
//! Get token for a physical display given its stable ID
static sp<IBinder> getPhysicalDisplayToken(PhysicalDisplayId displayId);
static sp<IBinder> getInternalDisplayToken();
static status_t enableVSyncInjections(bool enable);
static status_t injectVSync(nsecs_t when);
struct SCHash {
std::size_t operator()(const sp<SurfaceControl>& sc) const {
return std::hash<SurfaceControl *>{}(sc.get());
struct IBinderHash {
std::size_t operator()(const sp<IBinder>& iBinder) const {
return std::hash<IBinder*>{}(iBinder.get());
struct TCLHash {
std::size_t operator()(const sp<ITransactionCompletedListener>& tcl) const {
return std::hash<IBinder*>{}((tcl) ? IInterface::asBinder(tcl).get() : nullptr);
struct CallbackInfo {
// All the callbacks that have been requested for a TransactionCompletedListener in the
// Transaction
std::unordered_set<CallbackId> callbackIds;
// All the SurfaceControls that have been modified in this TransactionCompletedListener's
// process that require a callback if there is one or more callbackIds set.
std::unordered_set<sp<SurfaceControl>, SCHash> surfaceControls;
class Transaction : public Parcelable {
std::unordered_map<sp<IBinder>, ComposerState, IBinderHash> mComposerStates;
SortedVector<DisplayState > mDisplayStates;
std::unordered_map<sp<ITransactionCompletedListener>, CallbackInfo, TCLHash>
uint32_t mForceSynchronous = 0;
uint32_t mTransactionNestCount = 0;
bool mAnimation = false;
bool mEarlyWakeup = false;
bool mExplicitEarlyWakeupStart = false;
bool mExplicitEarlyWakeupEnd = false;
// Indicates that the Transaction contains a buffer that should be cached
bool mContainsBuffer = false;
// mDesiredPresentTime is the time in nanoseconds that the client would like the transaction
// to be presented. When it is not possible to present at exactly that time, it will be
// presented after the time has passed.
// Desired present times that are more than 1 second in the future may be ignored.
// When a desired present time has already passed, the transaction will be presented as soon
// as possible.
// Transactions from the same process are presented in the same order that they are applied.
// The desired present time does not affect this ordering.
int64_t mDesiredPresentTime = -1;
InputWindowCommands mInputWindowCommands;
int mStatus = NO_ERROR;
layer_state_t* getLayerState(const sp<IBinder>& surfaceHandle);
layer_state_t* getLayerState(const sp<SurfaceControl>& sc) {
return getLayerState(sc->getHandle());
DisplayState& getDisplayState(const sp<IBinder>& token);
void cacheBuffers();
void registerSurfaceControlForCallback(const sp<SurfaceControl>& sc);
Transaction() = default;
virtual ~Transaction() = default;
Transaction(Transaction const& other);
// Factory method that creates a new Transaction instance from the parcel.
static std::unique_ptr<Transaction> createFromParcel(const Parcel* parcel);
status_t writeToParcel(Parcel* parcel) const override;
status_t readFromParcel(const Parcel* parcel) override;
// Clears the contents of the transaction without applying it.
void clear();
status_t apply(bool synchronous = false);
// Merge another transaction in to this one, clearing other
// as if it had been applied.
Transaction& merge(Transaction&& other);
Transaction& show(const sp<SurfaceControl>& sc);
Transaction& hide(const sp<SurfaceControl>& sc);
Transaction& setPosition(const sp<SurfaceControl>& sc,
float x, float y);
Transaction& setSize(const sp<SurfaceControl>& sc,
uint32_t w, uint32_t h);
Transaction& setLayer(const sp<SurfaceControl>& sc,
int32_t z);
// Sets a Z order relative to the Surface specified by "relativeTo" but
// without becoming a full child of the relative. Z-ordering works exactly
// as if it were a child however.
// As a nod to sanity, only non-child surfaces may have a relative Z-order.
// This overrides any previous call and is overriden by any future calls
// to setLayer.
// If the relative is removed, the Surface will have no layer and be
// invisible, until the next time set(Relative)Layer is called.
Transaction& setRelativeLayer(const sp<SurfaceControl>& sc,
const sp<IBinder>& relativeTo, int32_t z);
Transaction& setFlags(const sp<SurfaceControl>& sc,
uint32_t flags, uint32_t mask);
Transaction& setTransparentRegionHint(const sp<SurfaceControl>& sc,
const Region& transparentRegion);
Transaction& setAlpha(const sp<SurfaceControl>& sc,
float alpha);
Transaction& setMatrix(const sp<SurfaceControl>& sc,
float dsdx, float dtdx, float dtdy, float dsdy);
Transaction& setCrop_legacy(const sp<SurfaceControl>& sc, const Rect& crop);
Transaction& setCornerRadius(const sp<SurfaceControl>& sc, float cornerRadius);
Transaction& setBackgroundBlurRadius(const sp<SurfaceControl>& sc,
int backgroundBlurRadius);
Transaction& setLayerStack(const sp<SurfaceControl>& sc, uint32_t layerStack);
Transaction& setMetadata(const sp<SurfaceControl>& sc, uint32_t key, const Parcel& p);
// Defers applying any changes made in this transaction until the Layer
// identified by handle reaches the given frameNumber. If the Layer identified
// by handle is removed, then we will apply this transaction regardless of
// what frame number has been reached.
Transaction& deferTransactionUntil_legacy(const sp<SurfaceControl>& sc,
const sp<IBinder>& handle, uint64_t frameNumber);
// A variant of deferTransactionUntil_legacy which identifies the Layer we wait for by
// Surface instead of Handle. Useful for clients which may not have the
// SurfaceControl for some of their Surfaces. Otherwise behaves identically.
Transaction& deferTransactionUntil_legacy(const sp<SurfaceControl>& sc,
const sp<Surface>& barrierSurface,
uint64_t frameNumber);
// Reparents all children of this layer to the new parent handle.
Transaction& reparentChildren(const sp<SurfaceControl>& sc,
const sp<IBinder>& newParentHandle);
/// Reparents the current layer to the new parent handle. The new parent must not be null.
// This can be used instead of reparentChildren if the caller wants to
// only re-parent a specific child.
Transaction& reparent(const sp<SurfaceControl>& sc,
const sp<IBinder>& newParentHandle);
Transaction& setColor(const sp<SurfaceControl>& sc, const half3& color);
// Sets the background color of a layer with the specified color, alpha, and dataspace
Transaction& setBackgroundColor(const sp<SurfaceControl>& sc, const half3& color,
float alpha, ui::Dataspace dataspace);
Transaction& setTransform(const sp<SurfaceControl>& sc, uint32_t transform);
Transaction& setTransformToDisplayInverse(const sp<SurfaceControl>& sc,
bool transformToDisplayInverse);
Transaction& setCrop(const sp<SurfaceControl>& sc, const Rect& crop);
Transaction& setFrame(const sp<SurfaceControl>& sc, const Rect& frame);
Transaction& setBuffer(const sp<SurfaceControl>& sc, const sp<GraphicBuffer>& buffer);
Transaction& setCachedBuffer(const sp<SurfaceControl>& sc, int32_t bufferId);
Transaction& setAcquireFence(const sp<SurfaceControl>& sc, const sp<Fence>& fence);
Transaction& setDataspace(const sp<SurfaceControl>& sc, ui::Dataspace dataspace);
Transaction& setHdrMetadata(const sp<SurfaceControl>& sc, const HdrMetadata& hdrMetadata);
Transaction& setSurfaceDamageRegion(const sp<SurfaceControl>& sc,
const Region& surfaceDamageRegion);
Transaction& setApi(const sp<SurfaceControl>& sc, int32_t api);
Transaction& setSidebandStream(const sp<SurfaceControl>& sc,
const sp<NativeHandle>& sidebandStream);
Transaction& setDesiredPresentTime(nsecs_t desiredPresentTime);
Transaction& setColorSpaceAgnostic(const sp<SurfaceControl>& sc, const bool agnostic);
// Sets information about the priority of the frame.
Transaction& setFrameRateSelectionPriority(const sp<SurfaceControl>& sc, int32_t priority);
Transaction& addTransactionCompletedCallback(
TransactionCompletedCallbackTakesContext callback, void* callbackContext);
Transaction& notifyProducerDisconnect(const sp<SurfaceControl>& sc);
// Detaches all child surfaces (and their children recursively)
// from their SurfaceControl.
// The child SurfaceControls will not throw exceptions or return errors,
// but transactions will have no effect.
// The child surfaces will continue to follow their parent surfaces,
// and remain eligible for rendering, but their relative state will be
// frozen. We use this in the WindowManager, in app shutdown/relaunch
// scenarios, where the app would otherwise clean up its child Surfaces.
// Sometimes the WindowManager needs to extend their lifetime slightly
// in order to perform an exit animation or prevent flicker.
Transaction& detachChildren(const sp<SurfaceControl>& sc);
// Set an override scaling mode as documented in <system/window.h>
// the override scaling mode will take precedence over any client
// specified scaling mode. -1 will clear the override scaling mode.
Transaction& setOverrideScalingMode(const sp<SurfaceControl>& sc,
int32_t overrideScalingMode);
#ifndef NO_INPUT
Transaction& setInputWindowInfo(const sp<SurfaceControl>& sc, const InputWindowInfo& info);
Transaction& syncInputWindows();
// Set a color transform matrix on the given layer on the built-in display.
Transaction& setColorTransform(const sp<SurfaceControl>& sc, const mat3& matrix,
const vec3& translation);
Transaction& setGeometry(const sp<SurfaceControl>& sc,
const Rect& source, const Rect& dst, int transform);
Transaction& setShadowRadius(const sp<SurfaceControl>& sc, float cornerRadius);
Transaction& setFrameRate(const sp<SurfaceControl>& sc, float frameRate,
int8_t compatibility);
// Set by window manager indicating the layer and all its children are
// in a different orientation than the display. The hint suggests that
// the graphic producers should receive a transform hint as if the
// display was in this orientation. When the display changes to match
// the layer orientation, the graphic producer may not need to allocate
// a buffer of a different size.
Transaction& setFixedTransformHint(const sp<SurfaceControl>& sc, int32_t transformHint);
status_t setDisplaySurface(const sp<IBinder>& token,
const sp<IGraphicBufferProducer>& bufferProducer);
void setDisplayLayerStack(const sp<IBinder>& token, uint32_t layerStack);
/* setDisplayProjection() defines the projection of layer stacks
* to a given display.
* - orientation defines the display's orientation.
* - layerStackRect defines which area of the window manager coordinate
* space will be used.
* - displayRect defines where on the display will layerStackRect be
* mapped to. displayRect is specified post-orientation, that is
* it uses the orientation seen by the end-user.
void setDisplayProjection(const sp<IBinder>& token, ui::Rotation orientation,
const Rect& layerStackRect, const Rect& displayRect);
void setDisplaySize(const sp<IBinder>& token, uint32_t width, uint32_t height);
void setAnimationTransaction();
void setEarlyWakeup();
void setExplicitEarlyWakeupStart();
void setExplicitEarlyWakeupEnd();
status_t clearLayerFrameStats(const sp<IBinder>& token) const;
status_t getLayerFrameStats(const sp<IBinder>& token, FrameStats* outStats) const;
static status_t clearAnimationFrameStats();
static status_t getAnimationFrameStats(FrameStats* outStats);
static status_t getHdrCapabilities(const sp<IBinder>& display,
HdrCapabilities* outCapabilities);
static void setDisplayProjection(const sp<IBinder>& token, ui::Rotation orientation,
const Rect& layerStackRect, const Rect& displayRect);
inline sp<ISurfaceComposerClient> getClient() { return mClient; }
static status_t getDisplayedContentSamplingAttributes(const sp<IBinder>& display,
ui::PixelFormat* outFormat,
ui::Dataspace* outDataspace,
uint8_t* outComponentMask);
static status_t setDisplayContentSamplingEnabled(const sp<IBinder>& display, bool enable,
uint8_t componentMask, uint64_t maxFrames);
static status_t getDisplayedContentSample(const sp<IBinder>& display, uint64_t maxFrames,
uint64_t timestamp, DisplayedFrameStats* outStats);
static status_t addRegionSamplingListener(const Rect& samplingArea,
const sp<IBinder>& stopLayerHandle,
const sp<IRegionSamplingListener>& listener);
static status_t removeRegionSamplingListener(const sp<IRegionSamplingListener>& listener);
virtual void onFirstRef();
mutable Mutex mLock;
status_t mStatus;
sp<ISurfaceComposerClient> mClient;
// ---------------------------------------------------------------------------
class ScreenshotClient {
// if cropping isn't required, callers may pass in a default Rect, e.g.:
// capture(display, producer, Rect(), reqWidth, ...);
static status_t capture(const sp<IBinder>& display, ui::Dataspace reqDataSpace,
ui::PixelFormat reqPixelFormat, const Rect& sourceCrop,
uint32_t reqWidth, uint32_t reqHeight, bool useIdentityTransform,
ui::Rotation rotation, bool captureSecureLayers,
sp<GraphicBuffer>* outBuffer, bool& outCapturedSecureLayers);
static status_t capture(const sp<IBinder>& display, ui::Dataspace reqDataSpace,
ui::PixelFormat reqPixelFormat, const Rect& sourceCrop,
uint32_t reqWidth, uint32_t reqHeight, bool useIdentityTransform,
ui::Rotation rotation, sp<GraphicBuffer>* outBuffer);
static status_t capture(uint64_t displayOrLayerStack, ui::Dataspace* outDataspace,
sp<GraphicBuffer>* outBuffer);
static status_t captureLayers(const sp<IBinder>& layerHandle, ui::Dataspace reqDataSpace,
ui::PixelFormat reqPixelFormat, const Rect& sourceCrop,
float frameScale, sp<GraphicBuffer>* outBuffer);
static status_t captureChildLayers(
const sp<IBinder>& layerHandle, ui::Dataspace reqDataSpace,
ui::PixelFormat reqPixelFormat, const Rect& sourceCrop,
const std::unordered_set<sp<IBinder>, ISurfaceComposer::SpHash<IBinder>>&
float frameScale, sp<GraphicBuffer>* outBuffer);
// ---------------------------------------------------------------------------
class TransactionCompletedListener : public BnTransactionCompletedListener {
CallbackId getNextIdLocked() REQUIRES(mMutex);
std::mutex mMutex;
bool mListening GUARDED_BY(mMutex) = false;
CallbackId mCallbackIdCounter GUARDED_BY(mMutex) = 1;
struct CallbackTranslation {
TransactionCompletedCallback callbackFunction;
std::unordered_map<sp<IBinder>, sp<SurfaceControl>, SurfaceComposerClient::IBinderHash>
std::unordered_map<CallbackId, CallbackTranslation> mCallbacks GUARDED_BY(mMutex);
static sp<TransactionCompletedListener> getInstance();
static sp<ITransactionCompletedListener> getIInstance();
void startListeningLocked() REQUIRES(mMutex);
CallbackId addCallbackFunction(
const TransactionCompletedCallback& callbackFunction,
const std::unordered_set<sp<SurfaceControl>, SurfaceComposerClient::SCHash>&
void addSurfaceControlToCallbacks(const sp<SurfaceControl>& surfaceControl,
const std::unordered_set<CallbackId>& callbackIds);
// Overrides BnTransactionCompletedListener's onTransactionCompleted
void onTransactionCompleted(ListenerStats stats) override;
} // namespace android