SurfaceFlinger: Support out of order transactions
With BLAST, buffers are submitted via transactions and they
are subjected to the same transaction queueing logic - transactions
from a client must be applied in the order they came in.
This poses a problem when clients use multiple blast adapters.
Transactions from one window can get queued up if the buffer
is not ready to be presented, preventing transactions
from another window to be applied in a timely manner.
We fix this by using a different apply token for every bast adapter
so their transactions are handled independently.
Bug: b/176411039, b/168917217
Test: atest BlastBufferQueueTest
Test: YouTube minimize video and scroll, notice scrolling is at 60/90fps
Change-Id: I0005dfa3c221a2b33545e39af16ae4b1ef08d269
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 5570d99..97c2693 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -396,7 +396,8 @@
mContainsBuffer(other.mContainsBuffer),
mDesiredPresentTime(other.mDesiredPresentTime),
mIsAutoTimestamp(other.mIsAutoTimestamp),
- mFrameTimelineVsyncId(other.mFrameTimelineVsyncId) {
+ mFrameTimelineVsyncId(other.mFrameTimelineVsyncId),
+ mApplyToken(other.mApplyToken) {
mDisplayStates = other.mDisplayStates;
mComposerStates = other.mComposerStates;
mInputWindowCommands = other.mInputWindowCommands;
@@ -427,7 +428,8 @@
const int64_t desiredPresentTime = parcel->readInt64();
const bool isAutoTimestamp = parcel->readBool();
const int64_t frameTimelineVsyncId = parcel->readInt64();
-
+ sp<IBinder> applyToken;
+ parcel->readNullableStrongBinder(&applyToken);
size_t count = static_cast<size_t>(parcel->readUint32());
if (count > parcel->dataSize()) {
return BAD_VALUE;
@@ -505,6 +507,7 @@
mListenerCallbacks = listenerCallbacks;
mComposerStates = composerStates;
mInputWindowCommands = inputWindowCommands;
+ mApplyToken = applyToken;
return NO_ERROR;
}
@@ -532,6 +535,7 @@
parcel->writeInt64(mDesiredPresentTime);
parcel->writeBool(mIsAutoTimestamp);
parcel->writeInt64(mFrameTimelineVsyncId);
+ parcel->writeStrongBinder(mApplyToken);
parcel->writeUint32(static_cast<uint32_t>(mDisplayStates.size()));
for (auto const& displayState : mDisplayStates) {
displayState.write(*parcel);
@@ -607,6 +611,7 @@
mEarlyWakeup = mEarlyWakeup || other.mEarlyWakeup;
mExplicitEarlyWakeupStart = mExplicitEarlyWakeupStart || other.mExplicitEarlyWakeupStart;
mExplicitEarlyWakeupEnd = mExplicitEarlyWakeupEnd || other.mExplicitEarlyWakeupEnd;
+ mApplyToken = other.mApplyToken;
// When merging vsync Ids we take the oldest one
if (mFrameTimelineVsyncId != ISurfaceComposer::INVALID_VSYNC_ID &&
@@ -635,6 +640,7 @@
mDesiredPresentTime = 0;
mIsAutoTimestamp = true;
mFrameTimelineVsyncId = ISurfaceComposer::INVALID_VSYNC_ID;
+ mApplyToken = nullptr;
}
void SurfaceComposerClient::doUncacheBufferTransaction(uint64_t cacheId) {
@@ -763,7 +769,10 @@
flags |= ISurfaceComposer::eExplicitEarlyWakeupEnd;
}
- sp<IBinder> applyToken = IInterface::asBinder(TransactionCompletedListener::getIInstance());
+ sp<IBinder> applyToken = mApplyToken
+ ? mApplyToken
+ : IInterface::asBinder(TransactionCompletedListener::getIInstance());
+
sf->setTransactionState(mFrameTimelineVsyncId, composerStates, displayStates, flags, applyToken,
mInputWindowCommands, mDesiredPresentTime, mIsAutoTimestamp,
{} /*uncacheBuffer - only set in doUncacheBufferTransaction*/,
@@ -1579,6 +1588,12 @@
return *this;
}
+SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setApplyToken(
+ const sp<IBinder>& applyToken) {
+ mApplyToken = applyToken;
+ return *this;
+}
+
// ---------------------------------------------------------------------------
DisplayState& SurfaceComposerClient::Transaction::getDisplayState(const sp<IBinder>& token) {