Restore NuPlayer error and EOS handling

This was erroneously removed by commit a73c954

Change-Id: I4742339139e770f0181c99d427875897fd60b68e
Signed-off-by: Lajos Molnar <lajos@google.com>
Bug: 11413439
diff --git a/media/libstagefright/ACodec.cpp b/media/libstagefright/ACodec.cpp
index 1adab38..92a5361 100644
--- a/media/libstagefright/ACodec.cpp
+++ b/media/libstagefright/ACodec.cpp
@@ -3072,11 +3072,16 @@
         /* these are unfilled buffers returned by client */
         CHECK(msg->findInt32("err", &err));
 
-        ALOGV("[%s] saw error %d instead of an input buffer",
-             mCodec->mComponentName.c_str(), err);
+        if (err == OK) {
+            /* buffers with no errors are returned on MediaCodec.flush */
+            mode = KEEP_BUFFERS;
+        } else {
+            ALOGV("[%s] saw error %d instead of an input buffer",
+                 mCodec->mComponentName.c_str(), err);
+            eos = true;
+        }
 
         buffer.clear();
-        mode = KEEP_BUFFERS;
     }
 
     int32_t tmp;
diff --git a/media/libstagefright/MediaCodec.cpp b/media/libstagefright/MediaCodec.cpp
index e0686be..c36dd7c 100644
--- a/media/libstagefright/MediaCodec.cpp
+++ b/media/libstagefright/MediaCodec.cpp
@@ -1500,7 +1500,8 @@
             info->mOwnedByClient = false;
 
             if (portIndex == kPortIndexInput) {
-                msg->setInt32("err", ERROR_END_OF_STREAM);
+                /* no error, just returning buffers */
+                msg->setInt32("err", OK);
             }
             msg->post();
         }