Merge "aaudio: fix race condition in timestamp path"
diff --git a/services/oboeservice/AAudioServiceEndpoint.h b/services/oboeservice/AAudioServiceEndpoint.h
index 253f290..a134a13 100644
--- a/services/oboeservice/AAudioServiceEndpoint.h
+++ b/services/oboeservice/AAudioServiceEndpoint.h
@@ -77,6 +77,13 @@
*/
virtual aaudio_result_t getFreeRunningPosition(int64_t *positionFrames, int64_t *timeNanos) = 0;
+ /**
+ * Set time that the associated frame was presented to the hardware.
+ *
+ * @param positionFrames receive position, input value is ignored
+ * @param timeNanos receive time, input value is ignored
+ * @return AAUDIO_OK or AAUDIO_ERROR_UNAVAILABLE or other negative error
+ */
virtual aaudio_result_t getTimestamp(int64_t *positionFrames, int64_t *timeNanos) = 0;
int32_t getFramesPerBurst() const {
diff --git a/services/oboeservice/AAudioServiceEndpointShared.cpp b/services/oboeservice/AAudioServiceEndpointShared.cpp
index 63b9983..fc9f155 100644
--- a/services/oboeservice/AAudioServiceEndpointShared.cpp
+++ b/services/oboeservice/AAudioServiceEndpointShared.cpp
@@ -192,5 +192,13 @@
aaudio_result_t AAudioServiceEndpointShared::getTimestamp(int64_t *positionFrames,
int64_t *timeNanos) {
- return mStreamInternal->getTimestamp(CLOCK_MONOTONIC, positionFrames, timeNanos);
+ aaudio_result_t result = mStreamInternal->getTimestamp(CLOCK_MONOTONIC, positionFrames, timeNanos);
+ if (result == AAUDIO_ERROR_INVALID_STATE) {
+ // getTimestamp() can return AAUDIO_ERROR_INVALID_STATE if the stream has
+ // not completely started. This can cause a race condition that kills the
+ // timestamp service thread. So we reduce the error to a less serious one
+ // that allows the timestamp thread to continue.
+ result = AAUDIO_ERROR_UNAVAILABLE;
+ }
+ return result;
}
