Various improvements to nuplayer playback

- Drastically cut down the number of times we supply the AudioSink with data
by estimating the time until the sink would run out of data and then scheduling
a refill in advance of that.

- Use a dedicated looper for video decoders since they are currently taking
too long to return from OMX_FillThisBuffer (bug 5325201)

- Revise thread priorities for the OMX dispatcher and software codecs, instead
of running them at ANDROID_PRIORITY_AUDIO, they now only run at
ANDROID_PRIORITY_FOREGROUND

- Since threads created by pthread_create inherit all of the parent threads
attributes including thread priority, briefly reset thread priority to
ANDROID_PRIORITY_FOREGROUND before instantiating OMX components and then
restore it.

Change-Id: If9332a3a20dad5485333d68c11de0d2d5d3fffc3

1 files changed, 1 insertions, 1 deletions

diff --git a/media/libstagefright/omx/OMX.cpp b/media/libstagefright/omx/OMX.cpp
index bc24dbb..33d3f30 100644
--- a/media/libstagefright/omx/OMX.cpp
+++ b/media/libstagefright/omx/OMX.cpp
@@ -85,7 +85,7 @@ OMX::CallbackDispatcher::CallbackDispatcher(OMXNodeInstance *owner)
     : mOwner(owner),
       mDone(false) {
     mThread = new CallbackDispatcherThread(this);
-    mThread->run("OMXCallbackDisp", ANDROID_PRIORITY_AUDIO);
+    mThread->run("OMXCallbackDisp", ANDROID_PRIORITY_FOREGROUND);
 }
 
 OMX::CallbackDispatcher::~CallbackDispatcher() {