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android / platform / frameworks / native / 4ac3066fba / . / libs / gui / SurfaceComposerClient.cpp
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/*
* 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "SurfaceComposerClient"
#include <stdint.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <utils/Log.h>
#include <utils/SortedVector.h>
#include <utils/String8.h>
#include <utils/threads.h>
#include <binder/IPCThreadState.h>
#include <binder/IServiceManager.h>
#include <binder/ProcessState.h>
#include <system/graphics.h>
#include <gui/BufferItemConsumer.h>
#include <gui/CpuConsumer.h>
#include <gui/IGraphicBufferProducer.h>
#include <gui/ISurfaceComposer.h>
#include <gui/ISurfaceComposerClient.h>
#include <gui/LayerState.h>
#include <gui/Surface.h>
#include <gui/SurfaceComposerClient.h>
#include <private/gui/ParcelUtils.h>
#include <ui/DisplayMode.h>
#include <ui/DynamicDisplayInfo.h>
#ifndef NO_INPUT
#include <input/InputWindow.h>
#endif
#include <private/gui/ComposerService.h>
// This server size should always be smaller than the server cache size
#define BUFFER_CACHE_MAX_SIZE 64
namespace android {
using ui::ColorMode;
// ---------------------------------------------------------------------------
ANDROID_SINGLETON_STATIC_INSTANCE(ComposerService);
ComposerService::ComposerService()
: Singleton<ComposerService>() {
Mutex::Autolock _l(mLock);
connectLocked();
}
void ComposerService::connectLocked() {
const String16 name("SurfaceFlinger");
while (getService(name, &mComposerService) != NO_ERROR) {
usleep(250000);
}
assert(mComposerService != nullptr);
// Create the death listener.
class DeathObserver : public IBinder::DeathRecipient {
ComposerService& mComposerService;
virtual void binderDied(const wp<IBinder>& who) {
ALOGW("ComposerService remote (surfaceflinger) died [%p]",
who.unsafe_get());
mComposerService.composerServiceDied();
}
public:
explicit DeathObserver(ComposerService& mgr) : mComposerService(mgr) { }
};
mDeathObserver = new DeathObserver(*const_cast<ComposerService*>(this));
IInterface::asBinder(mComposerService)->linkToDeath(mDeathObserver);
}
/*static*/ sp<ISurfaceComposer> ComposerService::getComposerService() {
ComposerService& instance = ComposerService::getInstance();
Mutex::Autolock _l(instance.mLock);
if (instance.mComposerService == nullptr) {
ComposerService::getInstance().connectLocked();
assert(instance.mComposerService != nullptr);
ALOGD("ComposerService reconnected");
}
return instance.mComposerService;
}
void ComposerService::composerServiceDied()
{
Mutex::Autolock _l(mLock);
mComposerService = nullptr;
mDeathObserver = nullptr;
}
class DefaultComposerClient: public Singleton<DefaultComposerClient> {
Mutex mLock;
sp<SurfaceComposerClient> mClient;
friend class Singleton<ComposerService>;
public:
static sp<SurfaceComposerClient> getComposerClient() {
DefaultComposerClient& dc = DefaultComposerClient::getInstance();
Mutex::Autolock _l(dc.mLock);
if (dc.mClient == nullptr) {
dc.mClient = new SurfaceComposerClient;
}
return dc.mClient;
}
};
ANDROID_SINGLETON_STATIC_INSTANCE(DefaultComposerClient);
sp<SurfaceComposerClient> SurfaceComposerClient::getDefault() {
return DefaultComposerClient::getComposerClient();
}
JankDataListener::~JankDataListener() {
}
// ---------------------------------------------------------------------------
// TransactionCompletedListener does not use ANDROID_SINGLETON_STATIC_INSTANCE because it needs
// to be able to return a sp<> to its instance to pass to SurfaceFlinger.
// ANDROID_SINGLETON_STATIC_INSTANCE only allows a reference to an instance.
// 0 is an invalid callback id
TransactionCompletedListener::TransactionCompletedListener() : mCallbackIdCounter(1) {}
CallbackId TransactionCompletedListener::getNextIdLocked() {
return mCallbackIdCounter++;
}
sp<TransactionCompletedListener> TransactionCompletedListener::getInstance() {
static sp<TransactionCompletedListener> sInstance = new TransactionCompletedListener;
return sInstance;
}
sp<ITransactionCompletedListener> TransactionCompletedListener::getIInstance() {
return static_cast<sp<ITransactionCompletedListener>>(getInstance());
}
void TransactionCompletedListener::startListeningLocked() {
if (mListening) {
return;
}
ProcessState::self()->startThreadPool();
mListening = true;
}
CallbackId TransactionCompletedListener::addCallbackFunction(
const TransactionCompletedCallback& callbackFunction,
const std::unordered_set<sp<SurfaceControl>, SurfaceComposerClient::SCHash>&
surfaceControls) {
std::lock_guard<std::mutex> lock(mMutex);
startListeningLocked();
CallbackId callbackId = getNextIdLocked();
mCallbacks[callbackId].callbackFunction = callbackFunction;
auto& callbackSurfaceControls = mCallbacks[callbackId].surfaceControls;
for (const auto& surfaceControl : surfaceControls) {
callbackSurfaceControls[surfaceControl->getHandle()] = surfaceControl;
}
return callbackId;
}
void TransactionCompletedListener::addJankListener(const sp<JankDataListener>& listener,
sp<SurfaceControl> surfaceControl) {
std::lock_guard<std::mutex> lock(mMutex);
mJankListeners.insert({surfaceControl->getHandle(), listener});
}
void TransactionCompletedListener::removeJankListener(const sp<JankDataListener>& listener) {
std::lock_guard<std::mutex> lock(mMutex);
for (auto it = mJankListeners.begin(); it != mJankListeners.end();) {
if (it->second == listener) {
it = mJankListeners.erase(it);
} else {
it++;
}
}
}
void TransactionCompletedListener::setReleaseBufferCallback(uint64_t graphicBufferId,
ReleaseBufferCallback listener) {
std::scoped_lock<std::mutex> lock(mMutex);
mReleaseBufferCallbacks[graphicBufferId] = listener;
}
void TransactionCompletedListener::removeReleaseBufferCallback(uint64_t graphicBufferId) {
std::scoped_lock<std::mutex> lock(mMutex);
mReleaseBufferCallbacks.erase(graphicBufferId);
}
void TransactionCompletedListener::addSurfaceStatsListener(void* context, void* cookie,
sp<SurfaceControl> surfaceControl, SurfaceStatsCallback listener) {
std::lock_guard<std::mutex> lock(mMutex);
mSurfaceStatsListeners.insert({surfaceControl->getHandle(),
SurfaceStatsCallbackEntry(context, cookie, listener)});
}
void TransactionCompletedListener::removeSurfaceStatsListener(void* context, void* cookie) {
std::lock_guard<std::mutex> lock(mMutex);
for (auto it = mSurfaceStatsListeners.begin(); it != mSurfaceStatsListeners.end();) {
auto [itContext, itCookie, itListener] = it->second;
if (itContext == context && itCookie == cookie) {
it = mSurfaceStatsListeners.erase(it);
} else {
it++;
}
}
}
void TransactionCompletedListener::addSurfaceControlToCallbacks(
const sp<SurfaceControl>& surfaceControl,
const std::unordered_set<CallbackId>& callbackIds) {
std::lock_guard<std::mutex> lock(mMutex);
for (auto callbackId : callbackIds) {
mCallbacks[callbackId].surfaceControls.emplace(std::piecewise_construct,
std::forward_as_tuple(
surfaceControl->getHandle()),
std::forward_as_tuple(surfaceControl));
}
}
void TransactionCompletedListener::onTransactionCompleted(ListenerStats listenerStats) {
std::unordered_map<CallbackId, CallbackTranslation> callbacksMap;
std::multimap<sp<IBinder>, sp<JankDataListener>> jankListenersMap;
std::multimap<sp<IBinder>, SurfaceStatsCallbackEntry> surfaceListeners;
{
std::lock_guard<std::mutex> lock(mMutex);
/* This listener knows all the sp<IBinder> to sp<SurfaceControl> for all its registered
* callbackIds, except for when Transactions are merged together. This probably cannot be
* solved before this point because the Transactions could be merged together and applied in
* a different process.
*
* Fortunately, we get all the callbacks for this listener for the same frame together at
* the same time. This means if any Transactions were merged together, we will get their
* callbacks at the same time. We can combine all the sp<IBinder> to sp<SurfaceControl> maps
* for all the callbackIds to generate one super map that contains all the sp<IBinder> to
* sp<SurfaceControl> that could possibly exist for the callbacks.
*/
callbacksMap = mCallbacks;
jankListenersMap = mJankListeners;
surfaceListeners = mSurfaceStatsListeners;
for (const auto& transactionStats : listenerStats.transactionStats) {
for (auto& callbackId : transactionStats.callbackIds) {
mCallbacks.erase(callbackId);
}
}
}
for (const auto& transactionStats : listenerStats.transactionStats) {
for (auto callbackId : transactionStats.callbackIds) {
auto& [callbackFunction, callbackSurfaceControls] = callbacksMap[callbackId];
if (!callbackFunction) {
ALOGE("cannot call null callback function, skipping");
continue;
}
std::vector<SurfaceControlStats> surfaceControlStats;
for (const auto& surfaceStats : transactionStats.surfaceStats) {
surfaceControlStats
.emplace_back(callbacksMap[callbackId]
.surfaceControls[surfaceStats.surfaceControl],
transactionStats.latchTime, surfaceStats.acquireTime,
transactionStats.presentFence,
surfaceStats.previousReleaseFence, surfaceStats.transformHint,
surfaceStats.eventStats);
if (callbacksMap[callbackId].surfaceControls[surfaceStats.surfaceControl]) {
callbacksMap[callbackId]
.surfaceControls[surfaceStats.surfaceControl]
->setTransformHint(surfaceStats.transformHint);
}
// If there is buffer id set, we look up any pending client release buffer callbacks
// and call them. This is a performance optimization when we have a transaction
// callback and a release buffer callback happening at the same time to avoid an
// additional ipc call from the server.
if (surfaceStats.previousBufferId) {
ReleaseBufferCallback callback;
{
std::scoped_lock<std::mutex> lock(mMutex);
callback = popReleaseBufferCallbackLocked(surfaceStats.previousBufferId);
}
if (callback) {
callback(surfaceStats.previousBufferId,
surfaceStats.previousReleaseFence
? surfaceStats.previousReleaseFence
: Fence::NO_FENCE);
}
}
}
callbackFunction(transactionStats.latchTime, transactionStats.presentFence,
surfaceControlStats);
}
for (const auto& surfaceStats : transactionStats.surfaceStats) {
auto listenerRange = surfaceListeners.equal_range(surfaceStats.surfaceControl);
for (auto it = listenerRange.first; it != listenerRange.second; it++) {
auto entry = it->second;
entry.callback(entry.context, transactionStats.latchTime,
transactionStats.presentFence, surfaceStats);
}
if (surfaceStats.jankData.empty()) continue;
auto jankRange = jankListenersMap.equal_range(surfaceStats.surfaceControl);
for (auto it = jankRange.first; it != jankRange.second; it++) {
it->second->onJankDataAvailable(surfaceStats.jankData);
}
}
}
}
void TransactionCompletedListener::onReleaseBuffer(uint64_t graphicBufferId,
sp<Fence> releaseFence) {
ReleaseBufferCallback callback;
{
std::scoped_lock<std::mutex> lock(mMutex);
callback = popReleaseBufferCallbackLocked(graphicBufferId);
}
if (!callback) {
ALOGE("Could not call release buffer callback, buffer not found %" PRIu64, graphicBufferId);
return;
}
callback(graphicBufferId, releaseFence);
}
ReleaseBufferCallback TransactionCompletedListener::popReleaseBufferCallbackLocked(
uint64_t graphicBufferId) {
ReleaseBufferCallback callback;
auto itr = mReleaseBufferCallbacks.find(graphicBufferId);
if (itr == mReleaseBufferCallbacks.end()) {
return nullptr;
}
callback = itr->second;
mReleaseBufferCallbacks.erase(itr);
return callback;
}
// ---------------------------------------------------------------------------
void removeDeadBufferCallback(void* /*context*/, uint64_t graphicBufferId);
/**
* We use the BufferCache to reduce the overhead of exchanging GraphicBuffers with
* the server. If we were to simply parcel the GraphicBuffer we would pay two overheads
* 1. Cost of sending the FD
* 2. Cost of importing the GraphicBuffer with the mapper in the receiving process.
* To ease this cost we implement the following scheme of caching buffers to integers,
* or said-otherwise, naming them with integers. This is the scheme known as slots in
* the legacy BufferQueue system.
* 1. When sending Buffers to SurfaceFlinger we look up the Buffer in the cache.
* 2. If there is a cache-hit we remove the Buffer from the Transaction and instead
* send the cached integer.
* 3. If there is a cache miss, we cache the new buffer and send the integer
* along with the Buffer, SurfaceFlinger on it's side creates a new cache
* entry, and we use the integer for further communication.
* A few details about lifetime:
* 1. The cache evicts by LRU. The server side cache is keyed by BufferCache::getToken
* which is per process Unique. The server side cache is larger than the client side
* cache so that the server will never evict entries before the client.
* 2. When the client evicts an entry it notifies the server via an uncacheBuffer
* transaction.
* 3. The client only references the Buffers by ID, and uses buffer->addDeathCallback
* to auto-evict destroyed buffers.
*/
class BufferCache : public Singleton<BufferCache> {
public:
BufferCache() : token(new BBinder()) {}
sp<IBinder> getToken() {
return IInterface::asBinder(TransactionCompletedListener::getIInstance());
}
status_t getCacheId(const sp<GraphicBuffer>& buffer, uint64_t* cacheId) {
std::lock_guard<std::mutex> lock(mMutex);
auto itr = mBuffers.find(buffer->getId());
if (itr == mBuffers.end()) {
return BAD_VALUE;
}
itr->second = getCounter();
*cacheId = buffer->getId();
return NO_ERROR;
}
uint64_t cache(const sp<GraphicBuffer>& buffer) {
std::lock_guard<std::mutex> lock(mMutex);
if (mBuffers.size() >= BUFFER_CACHE_MAX_SIZE) {
evictLeastRecentlyUsedBuffer();
}
buffer->addDeathCallback(removeDeadBufferCallback, nullptr);
mBuffers[buffer->getId()] = getCounter();
return buffer->getId();
}
void uncache(uint64_t cacheId) {
std::lock_guard<std::mutex> lock(mMutex);
uncacheLocked(cacheId);
}
void uncacheLocked(uint64_t cacheId) REQUIRES(mMutex) {
mBuffers.erase(cacheId);
SurfaceComposerClient::doUncacheBufferTransaction(cacheId);
}
private:
void evictLeastRecentlyUsedBuffer() REQUIRES(mMutex) {
auto itr = mBuffers.begin();
uint64_t minCounter = itr->second;
auto minBuffer = itr;
itr++;
while (itr != mBuffers.end()) {
uint64_t counter = itr->second;
if (counter < minCounter) {
minCounter = counter;
minBuffer = itr;
}
itr++;
}
uncacheLocked(minBuffer->first);
}
uint64_t getCounter() REQUIRES(mMutex) {
static uint64_t counter = 0;
return counter++;
}
std::mutex mMutex;
std::map<uint64_t /*Cache id*/, uint64_t /*counter*/> mBuffers GUARDED_BY(mMutex);
// Used by ISurfaceComposer to identify which process is sending the cached buffer.
sp<IBinder> token;
};
ANDROID_SINGLETON_STATIC_INSTANCE(BufferCache);
void removeDeadBufferCallback(void* /*context*/, uint64_t graphicBufferId) {
// GraphicBuffer id's are used as the cache ids.
BufferCache::getInstance().uncache(graphicBufferId);
}
// ---------------------------------------------------------------------------
// Initialize transaction id counter used to generate transaction ids
// Transactions will start counting at 1, 0 is used for invalid transactions
std::atomic<uint32_t> SurfaceComposerClient::Transaction::idCounter = 1;
SurfaceComposerClient::Transaction::Transaction() {
mId = generateId();
}
SurfaceComposerClient::Transaction::Transaction(const Transaction& other)
: mId(other.mId),
mForceSynchronous(other.mForceSynchronous),
mTransactionNestCount(other.mTransactionNestCount),
mAnimation(other.mAnimation),
mEarlyWakeupStart(other.mEarlyWakeupStart),
mEarlyWakeupEnd(other.mEarlyWakeupEnd),
mContainsBuffer(other.mContainsBuffer),
mDesiredPresentTime(other.mDesiredPresentTime),
mIsAutoTimestamp(other.mIsAutoTimestamp),
mFrameTimelineInfo(other.mFrameTimelineInfo),
mApplyToken(other.mApplyToken) {
mDisplayStates = other.mDisplayStates;
mComposerStates = other.mComposerStates;
mInputWindowCommands = other.mInputWindowCommands;
mListenerCallbacks = other.mListenerCallbacks;
}
std::unique_ptr<SurfaceComposerClient::Transaction>
SurfaceComposerClient::Transaction::createFromParcel(const Parcel* parcel) {
auto transaction = std::make_unique<Transaction>();
if (transaction->readFromParcel(parcel) == NO_ERROR) {
return transaction;
}
return nullptr;
}
int64_t SurfaceComposerClient::Transaction::generateId() {
return (((int64_t)getpid()) << 32) | idCounter++;
}
status_t SurfaceComposerClient::Transaction::readFromParcel(const Parcel* parcel) {
const uint32_t forceSynchronous = parcel->readUint32();
const uint32_t transactionNestCount = parcel->readUint32();
const bool animation = parcel->readBool();
const bool earlyWakeupStart = parcel->readBool();
const bool earlyWakeupEnd = parcel->readBool();
const bool containsBuffer = parcel->readBool();
const int64_t desiredPresentTime = parcel->readInt64();
const bool isAutoTimestamp = parcel->readBool();
FrameTimelineInfo frameTimelineInfo;
SAFE_PARCEL(frameTimelineInfo.read, *parcel);
sp<IBinder> applyToken;
parcel->readNullableStrongBinder(&applyToken);
size_t count = static_cast<size_t>(parcel->readUint32());
if (count > parcel->dataSize()) {
return BAD_VALUE;
}
SortedVector<DisplayState> displayStates;
displayStates.setCapacity(count);
for (size_t i = 0; i < count; i++) {
DisplayState displayState;
if (displayState.read(*parcel) == BAD_VALUE) {
return BAD_VALUE;
}
displayStates.add(displayState);
}
count = static_cast<size_t>(parcel->readUint32());
if (count > parcel->dataSize()) {
return BAD_VALUE;
}
std::unordered_map<sp<ITransactionCompletedListener>, CallbackInfo, TCLHash> listenerCallbacks;
listenerCallbacks.reserve(count);
for (size_t i = 0; i < count; i++) {
sp<ITransactionCompletedListener> listener =
interface_cast<ITransactionCompletedListener>(parcel->readStrongBinder());
size_t numCallbackIds = parcel->readUint32();
if (numCallbackIds > parcel->dataSize()) {
return BAD_VALUE;
}
for (size_t j = 0; j < numCallbackIds; j++) {
listenerCallbacks[listener].callbackIds.insert(parcel->readInt64());
}
size_t numSurfaces = parcel->readUint32();
if (numSurfaces > parcel->dataSize()) {
return BAD_VALUE;
}
for (size_t j = 0; j < numSurfaces; j++) {
sp<SurfaceControl> surface;
SAFE_PARCEL(SurfaceControl::readFromParcel, *parcel, &surface);
listenerCallbacks[listener].surfaceControls.insert(surface);
}
}
count = static_cast<size_t>(parcel->readUint32());
if (count > parcel->dataSize()) {
return BAD_VALUE;
}
std::unordered_map<sp<IBinder>, ComposerState, IBinderHash> composerStates;
composerStates.reserve(count);
for (size_t i = 0; i < count; i++) {
sp<IBinder> surfaceControlHandle;
SAFE_PARCEL(parcel->readStrongBinder, &surfaceControlHandle);
ComposerState composerState;
if (composerState.read(*parcel) == BAD_VALUE) {
return BAD_VALUE;
}
composerStates[surfaceControlHandle] = composerState;
}
InputWindowCommands inputWindowCommands;
inputWindowCommands.read(*parcel);
// Parsing was successful. Update the object.
mForceSynchronous = forceSynchronous;
mTransactionNestCount = transactionNestCount;
mAnimation = animation;
mEarlyWakeupStart = earlyWakeupStart;
mEarlyWakeupEnd = earlyWakeupEnd;
mContainsBuffer = containsBuffer;
mDesiredPresentTime = desiredPresentTime;
mIsAutoTimestamp = isAutoTimestamp;
mFrameTimelineInfo = frameTimelineInfo;
mDisplayStates = displayStates;
mListenerCallbacks = listenerCallbacks;
mComposerStates = composerStates;
mInputWindowCommands = inputWindowCommands;
mApplyToken = applyToken;
return NO_ERROR;
}
status_t SurfaceComposerClient::Transaction::writeToParcel(Parcel* parcel) const {
// If we write the Transaction to a parcel, we want to ensure the Buffers are cached
// before crossing the IPC boundary. Otherwise the receiving party will cache the buffers
// but is unlikely to use them again as they are owned by the other process.
// You may be asking yourself, is this const cast safe? Const cast is safe up
// until the point where you try and write to an object that was originally const at which
// point we enter undefined behavior. In this case we are safe though, because there are
// two possibilities:
// 1. The SurfaceComposerClient::Transaction was originally non-const. Safe.
// 2. It was originall const! In this case not only was it useless, but it by definition
// contains no composer states and so cacheBuffers will not perform any writes.
const_cast<SurfaceComposerClient::Transaction*>(this)->cacheBuffers();
parcel->writeUint32(mForceSynchronous);
parcel->writeUint32(mTransactionNestCount);
parcel->writeBool(mAnimation);
parcel->writeBool(mEarlyWakeupStart);
parcel->writeBool(mEarlyWakeupEnd);
parcel->writeBool(mContainsBuffer);
parcel->writeInt64(mDesiredPresentTime);
parcel->writeBool(mIsAutoTimestamp);
SAFE_PARCEL(mFrameTimelineInfo.write, *parcel);
parcel->writeStrongBinder(mApplyToken);
parcel->writeUint32(static_cast<uint32_t>(mDisplayStates.size()));
for (auto const& displayState : mDisplayStates) {
displayState.write(*parcel);
}
parcel->writeUint32(static_cast<uint32_t>(mListenerCallbacks.size()));
for (auto const& [listener, callbackInfo] : mListenerCallbacks) {
parcel->writeStrongBinder(ITransactionCompletedListener::asBinder(listener));
parcel->writeUint32(static_cast<uint32_t>(callbackInfo.callbackIds.size()));
for (auto callbackId : callbackInfo.callbackIds) {
parcel->writeInt64(callbackId);
}
parcel->writeUint32(static_cast<uint32_t>(callbackInfo.surfaceControls.size()));
for (auto surfaceControl : callbackInfo.surfaceControls) {
SAFE_PARCEL(surfaceControl->writeToParcel, *parcel);
}
}
parcel->writeUint32(static_cast<uint32_t>(mComposerStates.size()));
for (auto const& [handle, composerState] : mComposerStates) {
SAFE_PARCEL(parcel->writeStrongBinder, handle);
composerState.write(*parcel);
}
mInputWindowCommands.write(*parcel);
return NO_ERROR;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::merge(Transaction&& other) {
for (auto const& [handle, composerState] : other.mComposerStates) {
if (mComposerStates.count(handle) == 0) {
mComposerStates[handle] = composerState;
} else {
mComposerStates[handle].state.merge(composerState.state);
}
}
for (auto const& state : other.mDisplayStates) {
ssize_t index = mDisplayStates.indexOf(state);
if (index < 0) {
mDisplayStates.add(state);
} else {
mDisplayStates.editItemAt(static_cast<size_t>(index)).merge(state);
}
}
for (const auto& [listener, callbackInfo] : other.mListenerCallbacks) {
auto& [callbackIds, surfaceControls] = callbackInfo;
mListenerCallbacks[listener].callbackIds.insert(std::make_move_iterator(
callbackIds.begin()),
std::make_move_iterator(callbackIds.end()));
mListenerCallbacks[listener].surfaceControls.insert(surfaceControls.begin(),
surfaceControls.end());
auto& currentProcessCallbackInfo =
mListenerCallbacks[TransactionCompletedListener::getIInstance()];
currentProcessCallbackInfo.surfaceControls
.insert(std::make_move_iterator(surfaceControls.begin()),
std::make_move_iterator(surfaceControls.end()));
// register all surface controls for all callbackIds for this listener that is merging
for (const auto& surfaceControl : currentProcessCallbackInfo.surfaceControls) {
TransactionCompletedListener::getInstance()
->addSurfaceControlToCallbacks(surfaceControl,
currentProcessCallbackInfo.callbackIds);
}
}
mInputWindowCommands.merge(other.mInputWindowCommands);
mContainsBuffer |= other.mContainsBuffer;
mEarlyWakeupStart = mEarlyWakeupStart || other.mEarlyWakeupStart;
mEarlyWakeupEnd = mEarlyWakeupEnd || other.mEarlyWakeupEnd;
mApplyToken = other.mApplyToken;
mFrameTimelineInfo.merge(other.mFrameTimelineInfo);
other.clear();
return *this;
}
void SurfaceComposerClient::Transaction::clear() {
mComposerStates.clear();
mDisplayStates.clear();
mListenerCallbacks.clear();
mInputWindowCommands.clear();
mContainsBuffer = false;
mForceSynchronous = 0;
mTransactionNestCount = 0;
mAnimation = false;
mEarlyWakeupStart = false;
mEarlyWakeupEnd = false;
mDesiredPresentTime = 0;
mIsAutoTimestamp = true;
mFrameTimelineInfo.clear();
mApplyToken = nullptr;
}
void SurfaceComposerClient::doUncacheBufferTransaction(uint64_t cacheId) {
sp<ISurfaceComposer> sf(ComposerService::getComposerService());
client_cache_t uncacheBuffer;
uncacheBuffer.token = BufferCache::getInstance().getToken();
uncacheBuffer.id = cacheId;
sp<IBinder> applyToken = IInterface::asBinder(TransactionCompletedListener::getIInstance());
sf->setTransactionState(FrameTimelineInfo{}, {}, {}, 0, applyToken, {}, systemTime(), true,
uncacheBuffer, false, {}, 0 /* Undefined transactionId */);
}
void SurfaceComposerClient::Transaction::cacheBuffers() {
if (!mContainsBuffer) {
return;
}
size_t count = 0;
for (auto& [handle, cs] : mComposerStates) {
layer_state_t* s = &(mComposerStates[handle].state);
if (!(s->what & layer_state_t::eBufferChanged)) {
continue;
} else if (s->what & layer_state_t::eCachedBufferChanged) {
// If eBufferChanged and eCachedBufferChanged are both trued then that means
// we already cached the buffer in a previous call to cacheBuffers, perhaps
// from writeToParcel on a Transaction that was merged in to this one.
continue;
}
// Don't try to cache a null buffer. Sending null buffers is cheap so we shouldn't waste
// time trying to cache them.
if (!s->buffer) {
continue;
}
uint64_t cacheId = 0;
status_t ret = BufferCache::getInstance().getCacheId(s->buffer, &cacheId);
if (ret == NO_ERROR) {
// Cache-hit. Strip the buffer and send only the id.
s->what &= ~static_cast<uint64_t>(layer_state_t::eBufferChanged);
s->buffer = nullptr;
} else {
// Cache-miss. Include the buffer and send the new cacheId.
cacheId = BufferCache::getInstance().cache(s->buffer);
}
s->what |= layer_state_t::eCachedBufferChanged;
s->cachedBuffer.token = BufferCache::getInstance().getToken();
s->cachedBuffer.id = cacheId;
// If we have more buffers than the size of the cache, we should stop caching so we don't
// evict other buffers in this transaction
count++;
if (count >= BUFFER_CACHE_MAX_SIZE) {
break;
}
}
}
status_t SurfaceComposerClient::Transaction::apply(bool synchronous) {
if (mStatus != NO_ERROR) {
return mStatus;
}
sp<ISurfaceComposer> sf(ComposerService::getComposerService());
bool hasListenerCallbacks = !mListenerCallbacks.empty();
std::vector<ListenerCallbacks> listenerCallbacks;
// For every listener with registered callbacks
for (const auto& [listener, callbackInfo] : mListenerCallbacks) {
auto& [callbackIds, surfaceControls] = callbackInfo;
if (callbackIds.empty()) {
continue;
}
if (surfaceControls.empty()) {
listenerCallbacks.emplace_back(IInterface::asBinder(listener), std::move(callbackIds));
} else {
// If the listener has any SurfaceControls set on this Transaction update the surface
// state
for (const auto& surfaceControl : surfaceControls) {
layer_state_t* s = getLayerState(surfaceControl);
if (!s) {
ALOGE("failed to get layer state");
continue;
}
std::vector<CallbackId> callbacks(callbackIds.begin(), callbackIds.end());
s->what |= layer_state_t::eHasListenerCallbacksChanged;
s->listeners.emplace_back(IInterface::asBinder(listener), callbacks);
}
}
}
cacheBuffers();
Vector<ComposerState> composerStates;
Vector<DisplayState> displayStates;
uint32_t flags = 0;
mForceSynchronous |= synchronous;
for (auto const& kv : mComposerStates){
composerStates.add(kv.second);
}
displayStates = std::move(mDisplayStates);
if (mForceSynchronous) {
flags |= ISurfaceComposer::eSynchronous;
}
if (mAnimation) {
flags |= ISurfaceComposer::eAnimation;
}
// If both mEarlyWakeupStart and mEarlyWakeupEnd are set
// it is equivalent for none
if (mEarlyWakeupStart && !mEarlyWakeupEnd) {
flags |= ISurfaceComposer::eEarlyWakeupStart;
}
if (mEarlyWakeupEnd && !mEarlyWakeupStart) {
flags |= ISurfaceComposer::eEarlyWakeupEnd;
}
sp<IBinder> applyToken = mApplyToken
? mApplyToken
: IInterface::asBinder(TransactionCompletedListener::getIInstance());
sf->setTransactionState(mFrameTimelineInfo, composerStates, displayStates, flags, applyToken,
mInputWindowCommands, mDesiredPresentTime, mIsAutoTimestamp,
{} /*uncacheBuffer - only set in doUncacheBufferTransaction*/,
hasListenerCallbacks, listenerCallbacks, mId);
mId = generateId();
// Clear the current states and flags
clear();
mStatus = NO_ERROR;
return NO_ERROR;
}
// ---------------------------------------------------------------------------
sp<IBinder> SurfaceComposerClient::createDisplay(const String8& displayName, bool secure) {
return ComposerService::getComposerService()->createDisplay(displayName,
secure);
}
void SurfaceComposerClient::destroyDisplay(const sp<IBinder>& display) {
return ComposerService::getComposerService()->destroyDisplay(display);
}
std::vector<PhysicalDisplayId> SurfaceComposerClient::getPhysicalDisplayIds() {
return ComposerService::getComposerService()->getPhysicalDisplayIds();
}
std::optional<PhysicalDisplayId> SurfaceComposerClient::getInternalDisplayId() {
return ComposerService::getComposerService()->getInternalDisplayId();
}
sp<IBinder> SurfaceComposerClient::getPhysicalDisplayToken(PhysicalDisplayId displayId) {
return ComposerService::getComposerService()->getPhysicalDisplayToken(displayId);
}
sp<IBinder> SurfaceComposerClient::getInternalDisplayToken() {
return ComposerService::getComposerService()->getInternalDisplayToken();
}
void SurfaceComposerClient::Transaction::setAnimationTransaction() {
mAnimation = true;
}
void SurfaceComposerClient::Transaction::setEarlyWakeupStart() {
mEarlyWakeupStart = true;
}
void SurfaceComposerClient::Transaction::setEarlyWakeupEnd() {
mEarlyWakeupEnd = true;
}
layer_state_t* SurfaceComposerClient::Transaction::getLayerState(const sp<SurfaceControl>& sc) {
auto handle = sc->getHandle();
if (mComposerStates.count(handle) == 0) {
// we don't have it, add an initialized layer_state to our list
ComposerState s;
s.state.surface = handle;
s.state.layerId = sc->getLayerId();
mComposerStates[handle] = s;
}
return &(mComposerStates[handle].state);
}
void SurfaceComposerClient::Transaction::registerSurfaceControlForCallback(
const sp<SurfaceControl>& sc) {
auto& callbackInfo = mListenerCallbacks[TransactionCompletedListener::getIInstance()];
callbackInfo.surfaceControls.insert(sc);
TransactionCompletedListener::getInstance()
->addSurfaceControlToCallbacks(sc, callbackInfo.callbackIds);
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setPosition(
const sp<SurfaceControl>& sc, float x, float y) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::ePositionChanged;
s->x = x;
s->y = y;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::show(
const sp<SurfaceControl>& sc) {
return setFlags(sc, 0, layer_state_t::eLayerHidden);
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::hide(
const sp<SurfaceControl>& sc) {
return setFlags(sc, layer_state_t::eLayerHidden, layer_state_t::eLayerHidden);
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setSize(
const sp<SurfaceControl>& sc, uint32_t w, uint32_t h) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eSizeChanged;
s->w = w;
s->h = h;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setLayer(
const sp<SurfaceControl>& sc, int32_t z) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eLayerChanged;
s->what &= ~layer_state_t::eRelativeLayerChanged;
s->z = z;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setRelativeLayer(
const sp<SurfaceControl>& sc, const sp<SurfaceControl>& relativeTo, int32_t z) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eRelativeLayerChanged;
s->what &= ~layer_state_t::eLayerChanged;
s->relativeLayerSurfaceControl = relativeTo;
s->z = z;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setFlags(
const sp<SurfaceControl>& sc, uint32_t flags,
uint32_t mask) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
if ((mask & layer_state_t::eLayerOpaque) || (mask & layer_state_t::eLayerHidden) ||
(mask & layer_state_t::eLayerSecure) || (mask & layer_state_t::eLayerSkipScreenshot) ||
(mask & layer_state_t::eEnableBackpressure)) {
s->what |= layer_state_t::eFlagsChanged;
}
s->flags &= ~mask;
s->flags |= (flags & mask);
s->mask |= mask;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setTransparentRegionHint(
const sp<SurfaceControl>& sc,
const Region& transparentRegion) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eTransparentRegionChanged;
s->transparentRegion = transparentRegion;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setAlpha(
const sp<SurfaceControl>& sc, float alpha) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eAlphaChanged;
s->alpha = alpha;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setLayerStack(
const sp<SurfaceControl>& sc, uint32_t layerStack) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eLayerStackChanged;
s->layerStack = layerStack;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setMetadata(
const sp<SurfaceControl>& sc, uint32_t key, const Parcel& p) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eMetadataChanged;
s->metadata.mMap[key] = {p.data(), p.data() + p.dataSize()};
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setMatrix(
const sp<SurfaceControl>& sc, float dsdx, float dtdx,
float dtdy, float dsdy) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eMatrixChanged;
layer_state_t::matrix22_t matrix;
matrix.dsdx = dsdx;
matrix.dtdx = dtdx;
matrix.dsdy = dsdy;
matrix.dtdy = dtdy;
s->matrix = matrix;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setCrop(
const sp<SurfaceControl>& sc, const Rect& crop) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eCropChanged;
s->crop = crop;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setCornerRadius(
const sp<SurfaceControl>& sc, float cornerRadius) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eCornerRadiusChanged;
s->cornerRadius = cornerRadius;
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setBackgroundBlurRadius(
const sp<SurfaceControl>& sc, int backgroundBlurRadius) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eBackgroundBlurRadiusChanged;
s->backgroundBlurRadius = backgroundBlurRadius;
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setBlurRegions(
const sp<SurfaceControl>& sc, const std::vector<BlurRegion>& blurRegions) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eBlurRegionsChanged;
s->blurRegions = blurRegions;
return *this;
}
SurfaceComposerClient::Transaction&
SurfaceComposerClient::Transaction::deferTransactionUntil_legacy(
const sp<SurfaceControl>& sc, const sp<SurfaceControl>& barrierSurfaceControl,
uint64_t frameNumber) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eDeferTransaction_legacy;
s->barrierSurfaceControl_legacy = barrierSurfaceControl;
s->barrierFrameNumber = frameNumber;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::reparentChildren(
const sp<SurfaceControl>& sc, const sp<SurfaceControl>& newParent) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eReparentChildren;
s->reparentSurfaceControl = newParent;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::reparent(
const sp<SurfaceControl>& sc, const sp<SurfaceControl>& newParent) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eReparent;
s->parentSurfaceControlForChild = newParent;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setColor(
const sp<SurfaceControl>& sc,
const half3& color) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eColorChanged;
s->color = color;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setBackgroundColor(
const sp<SurfaceControl>& sc, const half3& color, float alpha, ui::Dataspace dataspace) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eBackgroundColorChanged;
s->color = color;
s->bgColorAlpha = alpha;
s->bgColorDataspace = dataspace;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setTransform(
const sp<SurfaceControl>& sc, uint32_t transform) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eTransformChanged;
s->transform = transform;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction&
SurfaceComposerClient::Transaction::setTransformToDisplayInverse(const sp<SurfaceControl>& sc,
bool transformToDisplayInverse) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eTransformToDisplayInverseChanged;
s->transformToDisplayInverse = transformToDisplayInverse;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setFrame(
const sp<SurfaceControl>& sc, const Rect& frame) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eFrameChanged;
s->orientedDisplaySpaceRect = frame;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setBuffer(
const sp<SurfaceControl>& sc, const sp<GraphicBuffer>& buffer,
ReleaseBufferCallback callback) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
removeReleaseBufferCallback(s);
s->what |= layer_state_t::eBufferChanged;
s->buffer = buffer;
if (mIsAutoTimestamp) {
mDesiredPresentTime = systemTime();
}
setReleaseBufferCallback(s, callback);
registerSurfaceControlForCallback(sc);
mContainsBuffer = true;
return *this;
}
void SurfaceComposerClient::Transaction::removeReleaseBufferCallback(layer_state_t* s) {
if (!s->releaseBufferListener) {
return;
}
s->what &= ~static_cast<uint64_t>(layer_state_t::eReleaseBufferListenerChanged);
s->releaseBufferListener = nullptr;
TransactionCompletedListener::getInstance()->removeReleaseBufferCallback(s->buffer->getId());
}
void SurfaceComposerClient::Transaction::setReleaseBufferCallback(layer_state_t* s,
ReleaseBufferCallback callback) {
if (!callback) {
return;
}
if (!s->buffer) {
ALOGW("Transaction::setReleaseBufferCallback"
"ignored trying to set a callback on a null buffer.");
return;
}
s->what |= layer_state_t::eReleaseBufferListenerChanged;
s->releaseBufferListener = TransactionCompletedListener::getIInstance();
auto listener = TransactionCompletedListener::getInstance();
listener->setReleaseBufferCallback(s->buffer->getId(), callback);
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setAcquireFence(
const sp<SurfaceControl>& sc, const sp<Fence>& fence) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eAcquireFenceChanged;
s->acquireFence = fence;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setDataspace(
const sp<SurfaceControl>& sc, ui::Dataspace dataspace) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eDataspaceChanged;
s->dataspace = dataspace;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setHdrMetadata(
const sp<SurfaceControl>& sc, const HdrMetadata& hdrMetadata) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eHdrMetadataChanged;
s->hdrMetadata = hdrMetadata;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setSurfaceDamageRegion(
const sp<SurfaceControl>& sc, const Region& surfaceDamageRegion) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eSurfaceDamageRegionChanged;
s->surfaceDamageRegion = surfaceDamageRegion;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setApi(
const sp<SurfaceControl>& sc, int32_t api) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eApiChanged;
s->api = api;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setSidebandStream(
const sp<SurfaceControl>& sc, const sp<NativeHandle>& sidebandStream) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eSidebandStreamChanged;
s->sidebandStream = sidebandStream;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setDesiredPresentTime(
nsecs_t desiredPresentTime) {
mDesiredPresentTime = desiredPresentTime;
mIsAutoTimestamp = false;
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setColorSpaceAgnostic(
const sp<SurfaceControl>& sc, const bool agnostic) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eColorSpaceAgnosticChanged;
s->colorSpaceAgnostic = agnostic;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction&
SurfaceComposerClient::Transaction::setFrameRateSelectionPriority(const sp<SurfaceControl>& sc,
int32_t priority) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eFrameRateSelectionPriority;
s->frameRateSelectionPriority = priority;
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction&
SurfaceComposerClient::Transaction::addTransactionCompletedCallback(
TransactionCompletedCallbackTakesContext callback, void* callbackContext) {
auto listener = TransactionCompletedListener::getInstance();
auto callbackWithContext = std::bind(callback, callbackContext, std::placeholders::_1,
std::placeholders::_2, std::placeholders::_3);
const auto& surfaceControls =
mListenerCallbacks[TransactionCompletedListener::getIInstance()].surfaceControls;
CallbackId callbackId = listener->addCallbackFunction(callbackWithContext, surfaceControls);
mListenerCallbacks[TransactionCompletedListener::getIInstance()].callbackIds.emplace(
callbackId);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::notifyProducerDisconnect(
const sp<SurfaceControl>& sc) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eProducerDisconnect;
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setFrameNumber(
const sp<SurfaceControl>& sc, uint64_t frameNumber) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eFrameNumberChanged;
s->frameNumber = frameNumber;
return *this;
}
#ifndef NO_INPUT
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setInputWindowInfo(
const sp<SurfaceControl>& sc,
const InputWindowInfo& info) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->inputHandle = new InputWindowHandle(info);
s->what |= layer_state_t::eInputInfoChanged;
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setFocusedWindow(
const FocusRequest& request) {
mInputWindowCommands.focusRequests.push_back(request);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::syncInputWindows() {
mInputWindowCommands.syncInputWindows = true;
return *this;
}
#endif
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setColorTransform(
const sp<SurfaceControl>& sc, const mat3& matrix, const vec3& translation) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eColorTransformChanged;
s->colorTransform = mat4(matrix, translation);
registerSurfaceControlForCallback(sc);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setGeometry(
const sp<SurfaceControl>& sc, const Rect& source, const Rect& dst, int transform) {
setCrop(sc, source);
int x = dst.left;
int y = dst.top;
float sourceWidth = source.getWidth();
float sourceHeight = source.getHeight();
float xScale = sourceWidth < 0 ? 1.0f : dst.getWidth() / sourceWidth;
float yScale = sourceHeight < 0 ? 1.0f : dst.getHeight() / sourceHeight;
float matrix[4] = {1, 0, 0, 1};
switch (transform) {
case NATIVE_WINDOW_TRANSFORM_FLIP_H:
matrix[0] = -xScale; matrix[1] = 0;
matrix[2] = 0; matrix[3] = yScale;
x += source.getWidth();
break;
case NATIVE_WINDOW_TRANSFORM_FLIP_V:
matrix[0] = xScale; matrix[1] = 0;
matrix[2] = 0; matrix[3] = -yScale;
y += source.getHeight();
break;
case NATIVE_WINDOW_TRANSFORM_ROT_90:
matrix[0] = 0; matrix[1] = -yScale;
matrix[2] = xScale; matrix[3] = 0;
x += source.getHeight();
break;
case NATIVE_WINDOW_TRANSFORM_ROT_180:
matrix[0] = -xScale; matrix[1] = 0;
matrix[2] = 0; matrix[3] = -yScale;
x += source.getWidth();
y += source.getHeight();
break;
case NATIVE_WINDOW_TRANSFORM_ROT_270:
matrix[0] = 0; matrix[1] = yScale;
matrix[2] = -xScale; matrix[3] = 0;
y += source.getWidth();
break;
default:
matrix[0] = xScale; matrix[1] = 0;
matrix[2] = 0; matrix[3] = yScale;
break;
}
setMatrix(sc, matrix[0], matrix[1], matrix[2], matrix[3]);
float offsetX = xScale * source.left;
float offsetY = yScale * source.top;
setPosition(sc, x - offsetX, y - offsetY);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setShadowRadius(
const sp<SurfaceControl>& sc, float shadowRadius) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eShadowRadiusChanged;
s->shadowRadius = shadowRadius;
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setFrameRate(
const sp<SurfaceControl>& sc, float frameRate, int8_t compatibility,
int8_t changeFrameRateStrategy) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
// Allow privileged values as well here, those will be ignored by SF if
// the caller is not privileged
if (!ValidateFrameRate(frameRate, compatibility, changeFrameRateStrategy,
"Transaction::setFrameRate",
/*privileged=*/true)) {
mStatus = BAD_VALUE;
return *this;
}
s->what |= layer_state_t::eFrameRateChanged;
s->frameRate = frameRate;
s->frameRateCompatibility = compatibility;
s->changeFrameRateStrategy = changeFrameRateStrategy;
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setFixedTransformHint(
const sp<SurfaceControl>& sc, int32_t fixedTransformHint) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
const ui::Transform::RotationFlags transform = fixedTransformHint == -1
? ui::Transform::ROT_INVALID
: ui::Transform::toRotationFlags(static_cast<ui::Rotation>(fixedTransformHint));
s->what |= layer_state_t::eFixedTransformHintChanged;
s->fixedTransformHint = transform;
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setFrameTimelineInfo(
const FrameTimelineInfo& frameTimelineInfo) {
mFrameTimelineInfo.merge(frameTimelineInfo);
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setAutoRefresh(
const sp<SurfaceControl>& sc, bool autoRefresh) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eAutoRefreshChanged;
s->autoRefresh = autoRefresh;
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setApplyToken(
const sp<IBinder>& applyToken) {
mApplyToken = applyToken;
return *this;
}
SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setStretchEffect(
const sp<SurfaceControl>& sc, float left, float top, float right, float bottom, float vecX,
float vecY, float maxAmount) {
layer_state_t* s = getLayerState(sc);
if (!s) {
mStatus = BAD_INDEX;
return *this;
}
s->what |= layer_state_t::eStretchChanged;
s->stretchEffect = StretchEffect{.area = {left, top, right, bottom},
.vectorX = vecX,
.vectorY = vecY,
.maxAmount = maxAmount};
return *this;
}
// ---------------------------------------------------------------------------
DisplayState& SurfaceComposerClient::Transaction::getDisplayState(const sp<IBinder>& token) {
DisplayState s;
s.token = token;
ssize_t index = mDisplayStates.indexOf(s);
if (index < 0) {
// we don't have it, add an initialized layer_state to our list
s.what = 0;
index = mDisplayStates.add(s);
}
return mDisplayStates.editItemAt(static_cast<size_t>(index));
}
status_t SurfaceComposerClient::Transaction::setDisplaySurface(const sp<IBinder>& token,
const sp<IGraphicBufferProducer>& bufferProducer) {
if (bufferProducer.get() != nullptr) {
// Make sure that composition can never be stalled by a virtual display
// consumer that isn't processing buffers fast enough.
status_t err = bufferProducer->setAsyncMode(true);
if (err != NO_ERROR) {
ALOGE("Composer::setDisplaySurface Failed to enable async mode on the "
"BufferQueue. This BufferQueue cannot be used for virtual "
"display. (%d)", err);
return err;
}
}
DisplayState& s(getDisplayState(token));
s.surface = bufferProducer;
s.what |= DisplayState::eSurfaceChanged;
return NO_ERROR;
}
void SurfaceComposerClient::Transaction::setDisplayLayerStack(const sp<IBinder>& token,
uint32_t layerStack) {
DisplayState& s(getDisplayState(token));
s.layerStack = layerStack;
s.what |= DisplayState::eLayerStackChanged;
}
void SurfaceComposerClient::Transaction::setDisplayProjection(const sp<IBinder>& token,
ui::Rotation orientation,
const Rect& layerStackRect,
const Rect& displayRect) {
DisplayState& s(getDisplayState(token));
s.orientation = orientation;
s.layerStackSpaceRect = layerStackRect;
s.orientedDisplaySpaceRect = displayRect;
s.what |= DisplayState::eDisplayProjectionChanged;
mForceSynchronous = true; // TODO: do we actually still need this?
}
void SurfaceComposerClient::Transaction::setDisplaySize(const sp<IBinder>& token, uint32_t width, uint32_t height) {
DisplayState& s(getDisplayState(token));
s.width = width;
s.height = height;
s.what |= DisplayState::eDisplaySizeChanged;
}
// ---------------------------------------------------------------------------
SurfaceComposerClient::SurfaceComposerClient()
: mStatus(NO_INIT)
{
}
SurfaceComposerClient::SurfaceComposerClient(const sp<ISurfaceComposerClient>& client)
: mStatus(NO_ERROR), mClient(client)
{
}
void SurfaceComposerClient::onFirstRef() {
sp<ISurfaceComposer> sf(ComposerService::getComposerService());
if (sf != nullptr && mStatus == NO_INIT) {
sp<ISurfaceComposerClient> conn;
conn = sf->createConnection();
if (conn != nullptr) {
mClient = conn;
mStatus = NO_ERROR;
}
}
}
SurfaceComposerClient::~SurfaceComposerClient() {
dispose();
}
status_t SurfaceComposerClient::initCheck() const {
return mStatus;
}
sp<IBinder> SurfaceComposerClient::connection() const {
return IInterface::asBinder(mClient);
}
status_t SurfaceComposerClient::linkToComposerDeath(
const sp<IBinder::DeathRecipient>& recipient,
void* cookie, uint32_t flags) {
sp<ISurfaceComposer> sf(ComposerService::getComposerService());
return IInterface::asBinder(sf)->linkToDeath(recipient, cookie, flags);
}
void SurfaceComposerClient::dispose() {
// this can be called more than once.
sp<ISurfaceComposerClient> client;
Mutex::Autolock _lm(mLock);
if (mClient != nullptr) {
client = mClient; // hold ref while lock is held
mClient.clear();
}
mStatus = NO_INIT;
}
sp<SurfaceControl> SurfaceComposerClient::createSurface(const String8& name, uint32_t w, uint32_t h,
PixelFormat format, uint32_t flags,
const sp<IBinder>& parentHandle,
LayerMetadata metadata,
uint32_t* outTransformHint) {
sp<SurfaceControl> s;
createSurfaceChecked(name, w, h, format, &s, flags, parentHandle, std::move(metadata),
outTransformHint);
return s;
}
sp<SurfaceControl> SurfaceComposerClient::createWithSurfaceParent(const String8& name, uint32_t w,
uint32_t h, PixelFormat format,
uint32_t flags, Surface* parent,
LayerMetadata metadata,
uint32_t* outTransformHint) {
sp<SurfaceControl> sur;
status_t err = mStatus;
if (mStatus == NO_ERROR) {
sp<IBinder> handle;
sp<IGraphicBufferProducer> parentGbp = parent->getIGraphicBufferProducer();
sp<IGraphicBufferProducer> gbp;
uint32_t transformHint = 0;
int32_t id = -1;
err = mClient->createWithSurfaceParent(name, w, h, format, flags, parentGbp,
std::move(metadata), &handle, &gbp, &id,
&transformHint);
if (outTransformHint) {
*outTransformHint = transformHint;
}
ALOGE_IF(err, "SurfaceComposerClient::createWithSurfaceParent error %s", strerror(-err));
if (err == NO_ERROR) {
return new SurfaceControl(this, handle, gbp, id, transformHint);
}
}
return nullptr;
}
status_t SurfaceComposerClient::createSurfaceChecked(const String8& name, uint32_t w, uint32_t h,
PixelFormat format,
sp<SurfaceControl>* outSurface, uint32_t flags,
const sp<IBinder>& parentHandle,
LayerMetadata metadata,
uint32_t* outTransformHint) {
sp<SurfaceControl> sur;
status_t err = mStatus;
if (mStatus == NO_ERROR) {
sp<IBinder> handle;
sp<IGraphicBufferProducer> gbp;
uint32_t transformHint = 0;
int32_t id = -1;
err = mClient->createSurface(name, w, h, format, flags, parentHandle, std::move(metadata),
&handle, &gbp, &id, &transformHint);
if (outTransformHint) {
*outTransformHint = transformHint;
}
ALOGE_IF(err, "SurfaceComposerClient::createSurface error %s", strerror(-err));
if (err == NO_ERROR) {
*outSurface = new SurfaceControl(this, handle, gbp, id, transformHint);
}
}
return err;
}
sp<SurfaceControl> SurfaceComposerClient::mirrorSurface(SurfaceControl* mirrorFromSurface) {
if (mirrorFromSurface == nullptr) {
return nullptr;
}
sp<IBinder> handle;
sp<IBinder> mirrorFromHandle = mirrorFromSurface->getHandle();
int32_t layer_id = -1;
status_t err = mClient->mirrorSurface(mirrorFromHandle, &handle, &layer_id);
if (err == NO_ERROR) {
return new SurfaceControl(this, handle, nullptr, layer_id, true /* owned */);
}
return nullptr;
}
status_t SurfaceComposerClient::clearLayerFrameStats(const sp<IBinder>& token) const {
if (mStatus != NO_ERROR) {
return mStatus;
}
return mClient->clearLayerFrameStats(token);
}
status_t SurfaceComposerClient::getLayerFrameStats(const sp<IBinder>& token,
FrameStats* outStats) const {
if (mStatus != NO_ERROR) {
return mStatus;
}
return mClient->getLayerFrameStats(token, outStats);
}
// ----------------------------------------------------------------------------
status_t SurfaceComposerClient::enableVSyncInjections(bool enable) {
sp<ISurfaceComposer> sf(ComposerService::getComposerService());
return sf->enableVSyncInjections(enable);
}
status_t SurfaceComposerClient::injectVSync(nsecs_t when) {
sp<ISurfaceComposer> sf(ComposerService::getComposerService());
return sf->injectVSync(when);
}
status_t SurfaceComposerClient::getDisplayState(const sp<IBinder>& display,
ui::DisplayState* state) {
return ComposerService::getComposerService()->getDisplayState(display, state);
}
status_t SurfaceComposerClient::getStaticDisplayInfo(const sp<IBinder>& display,
ui::StaticDisplayInfo* info) {
return ComposerService::getComposerService()->getStaticDisplayInfo(display, info);
}
status_t SurfaceComposerClient::getDynamicDisplayInfo(const sp<IBinder>& display,
ui::DynamicDisplayInfo* info) {
return ComposerService::getComposerService()->getDynamicDisplayInfo(display, info);
}
status_t SurfaceComposerClient::getActiveDisplayMode(const sp<IBinder>& display,
ui::DisplayMode* mode) {
ui::DynamicDisplayInfo info;
status_t result = getDynamicDisplayInfo(display, &info);
if (result != NO_ERROR) {
return result;
}
if (const auto activeMode = info.getActiveDisplayMode()) {
*mode = *activeMode;
return NO_ERROR;
}
ALOGE("Active display mode not found.");
return NAME_NOT_FOUND;
}
status_t SurfaceComposerClient::setDesiredDisplayModeSpecs(
const sp<IBinder>& displayToken, ui::DisplayModeId defaultMode, bool allowGroupSwitching,
float primaryRefreshRateMin, float primaryRefreshRateMax, float appRequestRefreshRateMin,
float appRequestRefreshRateMax) {
return ComposerService::getComposerService()
->setDesiredDisplayModeSpecs(displayToken, defaultMode, allowGroupSwitching,
primaryRefreshRateMin, primaryRefreshRateMax,
appRequestRefreshRateMin, appRequestRefreshRateMax);
}
status_t SurfaceComposerClient::getDesiredDisplayModeSpecs(const sp<IBinder>& displayToken,
ui::DisplayModeId* outDefaultMode,
bool* outAllowGroupSwitching,
float* outPrimaryRefreshRateMin,
float* outPrimaryRefreshRateMax,
float* outAppRequestRefreshRateMin,
float* outAppRequestRefreshRateMax) {
return ComposerService::getComposerService()
->getDesiredDisplayModeSpecs(displayToken, outDefaultMode, outAllowGroupSwitching,
outPrimaryRefreshRateMin, outPrimaryRefreshRateMax,
outAppRequestRefreshRateMin, outAppRequestRefreshRateMax);
}
status_t SurfaceComposerClient::getDisplayNativePrimaries(const sp<IBinder>& display,
ui::DisplayPrimaries& outPrimaries) {
return ComposerService::getComposerService()->getDisplayNativePrimaries(display, outPrimaries);
}
status_t SurfaceComposerClient::setActiveColorMode(const sp<IBinder>& display,
ColorMode colorMode) {
return ComposerService::getComposerService()->setActiveColorMode(display, colorMode);
}
void SurfaceComposerClient::setAutoLowLatencyMode(const sp<IBinder>& display, bool on) {
ComposerService::getComposerService()->setAutoLowLatencyMode(display, on);
}
void SurfaceComposerClient::setGameContentType(const sp<IBinder>& display, bool on) {
ComposerService::getComposerService()->setGameContentType(display, on);
}
void SurfaceComposerClient::setDisplayPowerMode(const sp<IBinder>& token,
int mode) {
ComposerService::getComposerService()->setPowerMode(token, mode);
}
status_t SurfaceComposerClient::getCompositionPreference(
ui::Dataspace* defaultDataspace, ui::PixelFormat* defaultPixelFormat,
ui::Dataspace* wideColorGamutDataspace, ui::PixelFormat* wideColorGamutPixelFormat) {
return ComposerService::getComposerService()
->getCompositionPreference(defaultDataspace, defaultPixelFormat,
wideColorGamutDataspace, wideColorGamutPixelFormat);
}
bool SurfaceComposerClient::getProtectedContentSupport() {
bool supported = false;
ComposerService::getComposerService()->getProtectedContentSupport(&supported);
return supported;
}
status_t SurfaceComposerClient::clearAnimationFrameStats() {
return ComposerService::getComposerService()->clearAnimationFrameStats();
}
status_t SurfaceComposerClient::getAnimationFrameStats(FrameStats* outStats) {
return ComposerService::getComposerService()->getAnimationFrameStats(outStats);
}
status_t SurfaceComposerClient::overrideHdrTypes(const sp<IBinder>& display,
const std::vector<ui::Hdr>& hdrTypes) {
return ComposerService::getComposerService()->overrideHdrTypes(display, hdrTypes);
}
status_t SurfaceComposerClient::getDisplayedContentSamplingAttributes(const sp<IBinder>& display,
ui::PixelFormat* outFormat,
ui::Dataspace* outDataspace,
uint8_t* outComponentMask) {
return ComposerService::getComposerService()
->getDisplayedContentSamplingAttributes(display, outFormat, outDataspace,
outComponentMask);
}
status_t SurfaceComposerClient::setDisplayContentSamplingEnabled(const sp<IBinder>& display,
bool enable, uint8_t componentMask,
uint64_t maxFrames) {
return ComposerService::getComposerService()->setDisplayContentSamplingEnabled(display, enable,
componentMask,
maxFrames);
}
status_t SurfaceComposerClient::getDisplayedContentSample(const sp<IBinder>& display,
uint64_t maxFrames, uint64_t timestamp,
DisplayedFrameStats* outStats) {
return ComposerService::getComposerService()->getDisplayedContentSample(display, maxFrames,
timestamp, outStats);
}
status_t SurfaceComposerClient::isWideColorDisplay(const sp<IBinder>& display,
bool* outIsWideColorDisplay) {
return ComposerService::getComposerService()->isWideColorDisplay(display,
outIsWideColorDisplay);
}
status_t SurfaceComposerClient::addRegionSamplingListener(
const Rect& samplingArea, const sp<IBinder>& stopLayerHandle,
const sp<IRegionSamplingListener>& listener) {
return ComposerService::getComposerService()->addRegionSamplingListener(samplingArea,
stopLayerHandle,
listener);
}
status_t SurfaceComposerClient::removeRegionSamplingListener(
const sp<IRegionSamplingListener>& listener) {
return ComposerService::getComposerService()->removeRegionSamplingListener(listener);
}
status_t SurfaceComposerClient::addFpsListener(int32_t taskId,
const sp<gui::IFpsListener>& listener) {
return ComposerService::getComposerService()->addFpsListener(taskId, listener);
}
status_t SurfaceComposerClient::removeFpsListener(const sp<gui::IFpsListener>& listener) {
return ComposerService::getComposerService()->removeFpsListener(listener);
}
bool SurfaceComposerClient::getDisplayBrightnessSupport(const sp<IBinder>& displayToken) {
bool support = false;
ComposerService::getComposerService()->getDisplayBrightnessSupport(displayToken, &support);
return support;
}
status_t SurfaceComposerClient::setDisplayBrightness(const sp<IBinder>& displayToken,
const gui::DisplayBrightness& brightness) {
return ComposerService::getComposerService()->setDisplayBrightness(displayToken, brightness);
}
status_t SurfaceComposerClient::addHdrLayerInfoListener(
const sp<IBinder>& displayToken, const sp<gui::IHdrLayerInfoListener>& listener) {
return ComposerService::getComposerService()->addHdrLayerInfoListener(displayToken, listener);
}
status_t SurfaceComposerClient::removeHdrLayerInfoListener(
const sp<IBinder>& displayToken, const sp<gui::IHdrLayerInfoListener>& listener) {
return ComposerService::getComposerService()->removeHdrLayerInfoListener(displayToken,
listener);
}
status_t SurfaceComposerClient::notifyPowerBoost(int32_t boostId) {
return ComposerService::getComposerService()->notifyPowerBoost(boostId);
}
status_t SurfaceComposerClient::setGlobalShadowSettings(const half4& ambientColor,
const half4& spotColor, float lightPosY,
float lightPosZ, float lightRadius) {
return ComposerService::getComposerService()->setGlobalShadowSettings(ambientColor, spotColor,
lightPosY, lightPosZ,
lightRadius);
}
int SurfaceComposerClient::getGPUContextPriority() {
return ComposerService::getComposerService()->getGPUContextPriority();
}
// ----------------------------------------------------------------------------
status_t ScreenshotClient::captureDisplay(const DisplayCaptureArgs& captureArgs,
const sp<IScreenCaptureListener>& captureListener) {
sp<ISurfaceComposer> s(ComposerService::getComposerService());
if (s == nullptr) return NO_INIT;
return s->captureDisplay(captureArgs, captureListener);
}
status_t ScreenshotClient::captureDisplay(uint64_t displayOrLayerStack,
const sp<IScreenCaptureListener>& captureListener) {
sp<ISurfaceComposer> s(ComposerService::getComposerService());
if (s == nullptr) return NO_INIT;
return s->captureDisplay(displayOrLayerStack, captureListener);
}
status_t ScreenshotClient::captureLayers(const LayerCaptureArgs& captureArgs,
const sp<IScreenCaptureListener>& captureListener) {
sp<ISurfaceComposer> s(ComposerService::getComposerService());
if (s == nullptr) return NO_INIT;
return s->captureLayers(captureArgs, captureListener);
}
} // namespace android