aaudio: fix timestamps and underruns
Start the client after we get valid timing data from the server.
That can take a while because of the long cold start times.
The client is synced with the current position of the service.
Now the client can start clean with no underruns.
Bug: 63918065
Test: test_timestamps.cpp
Change-Id: I5d01eb844e4b14cd5477d56ea1dd9e309abc1c52
diff --git a/media/libaaudio/src/client/AudioStreamInternal.h b/media/libaaudio/src/client/AudioStreamInternal.h
index 3523294..899d455 100644
--- a/media/libaaudio/src/client/AudioStreamInternal.h
+++ b/media/libaaudio/src/client/AudioStreamInternal.h
@@ -115,12 +115,15 @@
int64_t currentTimeNanos,
int64_t *wakeTimePtr) = 0;
+ aaudio_result_t drainTimestampsFromService();
+
aaudio_result_t processCommands();
aaudio_result_t requestStopInternal();
aaudio_result_t stopCallback();
+ virtual void advanceClientToMatchServerPosition() = 0;
virtual void onFlushFromServer() {}
@@ -167,6 +170,10 @@
AAudioServiceInterface &mServiceInterface; // abstract interface to the service
+ SimpleDoubleBuffer<Timestamp> mAtomicTimestamp;
+
+ AtomicRequestor mNeedCatchUp; // Ask read() or write() to sync on first timestamp.
+
private:
/*
* Asynchronous write with data conversion.
@@ -188,8 +195,6 @@
AudioEndpointParcelable mEndPointParcelable; // description of the buffers filled by service
EndpointDescriptor mEndpointDescriptor; // buffer description with resolved addresses
- SimpleDoubleBuffer<Timestamp> mAtomicTimestamp;
-
int64_t mServiceLatencyNanos = 0;
};