Add NBAIO_Sink::getTimestamp()

with a real implementation in AudioStreamOutSink
for dummy implementation initially in MonoPipe.

Use in AudioFlinger::PlaybackThread::threadLoop_write()
to keep the input to the timestamp latch up-to-date.

Change-Id: I10ef277991b63bb43d55d6f3df75116ef32246cd

2 files changed, 17 insertions, 0 deletions

diff --git a/media/libnbaio/AudioStreamOutSink.cpp b/media/libnbaio/AudioStreamOutSink.cpp
index 6f525e5..b2de8a2 100644
--- a/media/libnbaio/AudioStreamOutSink.cpp
+++ b/media/libnbaio/AudioStreamOutSink.cpp
@@ -79,4 +79,16 @@ status_t AudioStreamOutSink::getNextWriteTimestamp(int64_t *timestamp) {
     return mStream->get_next_write_timestamp(mStream, timestamp);
 }
 
+status_t AudioStreamOutSink::getTimestamp(AudioTimestamp& timestamp)
+{
+    // FIXME position64 won't be needed after AudioTimestamp.mPosition is changed to uint64_t
+    uint64_t position64;
+    int ok = mStream->get_presentation_position(mStream, &position64, &timestamp.mTime);
+    if (ok != 0) {
+        return INVALID_OPERATION;
+    }
+    timestamp.mPosition = position64;
+    return OK;
+}
+
 }   // namespace android
diff --git a/media/libnbaio/MonoPipe.cpp b/media/libnbaio/MonoPipe.cpp
index e8d3d9b..a74b49e 100644
--- a/media/libnbaio/MonoPipe.cpp
+++ b/media/libnbaio/MonoPipe.cpp
@@ -310,4 +310,9 @@ bool MonoPipe::isShutdown()
     return mIsShutdown;
 }
 
+status_t MonoPipe::getTimestamp(AudioTimestamp& timestamp)
+{
+    return INVALID_OPERATION;
+}
+
 }   // namespace android