Tuning the number of packets for one read in StreamingSource

Read performance in StreamingSource became worse from LMR1 because
the design was changed to asynchronous from synchronous.
As a result, the generation of access unit does not make it
in time for some multiplexed contents, and this causes frame drop.
This patch improves read performance by increasing the number of
packets for one read.

Change-Id: I14955da5a9c5415e35905cc95f1471e0811a4991

1 files changed, 3 insertions, 1 deletions

diff --git a/media/libmediaplayerservice/nuplayer/StreamingSource.cpp b/media/libmediaplayerservice/nuplayer/StreamingSource.cpp
index 0246b59..d4c88de 100644
--- a/media/libmediaplayerservice/nuplayer/StreamingSource.cpp
+++ b/media/libmediaplayerservice/nuplayer/StreamingSource.cpp
@@ -32,6 +32,8 @@
 
 namespace android {
 
+const int32_t kNumListenerQueuePackets = 80;
+
 NuPlayer::StreamingSource::StreamingSource(
         const sp<AMessage> &notify,
         const sp<IStreamSource> &source)
@@ -84,7 +86,7 @@ status_t NuPlayer::StreamingSource::feedMoreTSData() {
 }
 
 void NuPlayer::StreamingSource::onReadBuffer() {
-    for (int32_t i = 0; i < 50; ++i) {
+    for (int32_t i = 0; i < kNumListenerQueuePackets; ++i) {
         char buffer[188];
         sp<AMessage> extra;
         ssize_t n = mStreamListener->read(buffer, sizeof(buffer), &extra);