MediaSyncEvent: Fix thread safety
Test: atest synchronizedrecordstate_tests
Test: atest MediaSyncEventTest#testSynchronizedRecord
Bug: 281168109
Merged-In: I75677947ab2b508d20d55256187830c3ace9c9e9
Change-Id: I75677947ab2b508d20d55256187830c3ace9c9e9
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 3a3d829..7c76844 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -8222,7 +8222,11 @@
overrun = OVERRUN_FALSE;
}
- if (activeTrack->mFramesToDrop == 0) {
+ // MediaSyncEvent handling: Synchronize AudioRecord to AudioTrack completion.
+ const ssize_t framesToDrop =
+ activeTrack->mSynchronizedRecordState.updateRecordFrames(framesOut);
+ if (framesToDrop == 0) {
+ // no sync event, process normally, otherwise ignore.
if (framesOut > 0) {
activeTrack->mSink.frameCount = framesOut;
// Sanitize before releasing if the track has no access to the source data
@@ -8232,28 +8236,7 @@
}
activeTrack->releaseBuffer(&activeTrack->mSink);
}
- } else {
- // FIXME could do a partial drop of framesOut
- if (activeTrack->mFramesToDrop > 0) {
- activeTrack->mFramesToDrop -= (ssize_t)framesOut;
- if (activeTrack->mFramesToDrop <= 0) {
- activeTrack->clearSyncStartEvent();
- }
- } else {
- activeTrack->mFramesToDrop += framesOut;
- if (activeTrack->mFramesToDrop >= 0 || activeTrack->mSyncStartEvent == 0 ||
- activeTrack->mSyncStartEvent->isCancelled()) {
- ALOGW("Synced record %s, session %d, trigger session %d",
- (activeTrack->mFramesToDrop >= 0) ? "timed out" : "cancelled",
- activeTrack->sessionId(),
- (activeTrack->mSyncStartEvent != 0) ?
- activeTrack->mSyncStartEvent->triggerSession() :
- AUDIO_SESSION_NONE);
- activeTrack->clearSyncStartEvent();
- }
- }
}
-
if (framesOut == 0) {
break;
}
@@ -8586,20 +8569,10 @@
if (event == AudioSystem::SYNC_EVENT_NONE) {
recordTrack->clearSyncStartEvent();
} else if (event != AudioSystem::SYNC_EVENT_SAME) {
- recordTrack->mSyncStartEvent = mAudioFlinger->createSyncEvent(event,
- triggerSession,
- recordTrack->sessionId(),
- syncStartEventCallback,
- recordTrack);
- // Sync event can be cancelled by the trigger session if the track is not in a
- // compatible state in which case we start record immediately
- if (recordTrack->mSyncStartEvent->isCancelled()) {
- recordTrack->clearSyncStartEvent();
- } else {
- // do not wait for the event for more than AudioSystem::kSyncRecordStartTimeOutMs
- recordTrack->mFramesToDrop = -(ssize_t)
- ((AudioSystem::kSyncRecordStartTimeOutMs * recordTrack->mSampleRate) / 1000);
- }
+ recordTrack->mSynchronizedRecordState.startRecording(
+ mAudioFlinger->createSyncEvent(
+ event, triggerSession,
+ recordTrack->sessionId(), syncStartEventCallback, recordTrack));
}
{