httplive: Create a copy of last enqueued metadata

Create duplicate of metadata in queueAccessUnit so that it is
available even after all the buffers are erased from packet source.

During a bandwidth switch httplive streaming Source uses last
enqueued timestamp as the start time for the new streams, and this
switch can occur at a time when all the packets are dequeued from
the current packet source. This is one of the scenarios when the
last enqueued time was showing a invalid timestamp. Creating a
copy will retain the timestamp value until the packet source is
active.

Bug: 18821145
Change-Id: I4d4ee700705cee58773da4660f8769f56018f9e4

1 files changed, 2 insertions, 2 deletions

diff --git a/media/libstagefright/mpeg2ts/AnotherPacketSource.cpp b/media/libstagefright/mpeg2ts/AnotherPacketSource.cpp
index c579d4c..0354a2d 100644
--- a/media/libstagefright/mpeg2ts/AnotherPacketSource.cpp
+++ b/media/libstagefright/mpeg2ts/AnotherPacketSource.cpp
@@ -218,12 +218,12 @@ void AnotherPacketSource::queueAccessUnit(const sp<ABuffer> &buffer) {
     }
 
     if (mLatestEnqueuedMeta == NULL) {
-        mLatestEnqueuedMeta = buffer->meta();
+        mLatestEnqueuedMeta = buffer->meta()->dup();
     } else {
         int64_t latestTimeUs = 0;
         CHECK(mLatestEnqueuedMeta->findInt64("timeUs", &latestTimeUs));
         if (lastQueuedTimeUs > latestTimeUs) {
-            mLatestEnqueuedMeta = buffer->meta();
+            mLatestEnqueuedMeta = buffer->meta()->dup();
         }
     }
 }