nuplayer: acquire wakelock during offload pause timeout

Hold a wakelock while paused in audio offload mode, until audio
teardown event is received, or pause is canceled.

Since ARM cores are sleeping, the delayed AMessage will not be
received, and the audio output driver will not be closed.
This blocks XO shutdown.

Bug: 19297092
Change-Id: I3d11fef633e3f2783f4aa31e71285e2fa09d234c

1 files changed, 7 insertions, 1 deletions

diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
index 04e52b8..25225a8 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
@@ -24,6 +24,7 @@
 #include <media/stagefright/foundation/ADebug.h>
 #include <media/stagefright/foundation/AMessage.h>
 #include <media/stagefright/foundation/AUtils.h>
+#include <media/stagefright/foundation/AWakeLock.h>
 #include <media/stagefright/MediaErrors.h>
 #include <media/stagefright/MetaData.h>
 #include <media/stagefright/Utils.h>
@@ -87,7 +88,9 @@ NuPlayer::Renderer::Renderer(
       mCurrentOffloadInfo(AUDIO_INFO_INITIALIZER),
       mCurrentPcmInfo(AUDIO_PCMINFO_INITIALIZER),
       mTotalBuffersQueued(0),
-      mLastAudioBufferDrained(0) {
+      mLastAudioBufferDrained(0),
+      mWakeLock(new AWakeLock()) {
+
 }
 
 NuPlayer::Renderer::~Renderer() {
@@ -514,6 +517,7 @@ void NuPlayer::Renderer::onMessageReceived(const sp<AMessage> &msg) {
             }
             ALOGV("Audio Offload tear down due to pause timeout.");
             onAudioOffloadTearDown(kDueToTimeout);
+            mWakeLock->release();
             break;
         }
 
@@ -1385,6 +1389,7 @@ void NuPlayer::Renderer::onAudioOffloadTearDown(AudioOffloadTearDownReason reaso
 
 void NuPlayer::Renderer::startAudioOffloadPauseTimeout() {
     if (offloadingAudio()) {
+        mWakeLock->acquire();
         sp<AMessage> msg = new AMessage(kWhatAudioOffloadPauseTimeout, id());
         msg->setInt32("generation", mAudioOffloadPauseTimeoutGeneration);
         msg->post(kOffloadPauseMaxUs);
@@ -1393,6 +1398,7 @@ void NuPlayer::Renderer::startAudioOffloadPauseTimeout() {
 
 void NuPlayer::Renderer::cancelAudioOffloadPauseTimeout() {
     if (offloadingAudio()) {
+        mWakeLock->release(true);
         ++mAudioOffloadPauseTimeoutGeneration;
     }
 }