From a10fd23bb9fcf16e778c639ea5638e2917dacd89 Mon Sep 17 00:00:00 2001
From: Ronghua Wu <ronghuawu@google.com>
Date: Thu, 6 Nov 2014 16:15:20 -0800
Subject: NuPlayer: open audio sink in offload mode when resuming from timeout
 teardown.

Also always recheck if a new stream can do offload.

Bug: 18154425
Change-Id: I121877834bd963eeeba91a2b951fd30d5dc36a8b
---
 media/libmediaplayerservice/nuplayer/NuPlayer.cpp     | 19 ++++++++++++++-----
 .../nuplayer/NuPlayerRenderer.cpp                     | 19 +++++++++++++++++++
 .../libmediaplayerservice/nuplayer/NuPlayerRenderer.h |  3 +++
 3 files changed, 36 insertions(+), 5 deletions(-)

(limited to 'media/libmediaplayerservice')

diff --git a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
index 4f88f02..336a9c5 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
@@ -604,8 +604,17 @@ void NuPlayer::onMessageReceived(const sp<AMessage> &msg) {
                 instantiateDecoder(false, &mVideoDecoder);
             }
 
-            if (mAudioSink != NULL) {
-                if (mOffloadAudio) {
+            // Don't try to re-open audio sink if there's an existing decoder.
+            if (mAudioSink != NULL && mAudioDecoder == NULL) {
+                sp<MetaData> audioMeta = mSource->getFormatMeta(true /* audio */);
+                sp<AMessage> videoFormat = mSource->getFormat(false /* audio */);
+                audio_stream_type_t streamType = mAudioSink->getAudioStreamType();
+                bool canOffload = canOffloadStream(audioMeta, (videoFormat != NULL),
+                         true /* is_streaming */, streamType);
+                if (canOffload) {
+                    if (!mOffloadAudio) {
+                        mRenderer->signalEnableOffloadAudio();
+                    }
                     // open audio sink early under offload mode.
                     sp<AMessage> format = mSource->getFormat(true /*audio*/);
                     openAudioSink(format, true /*offloadOnly*/);
@@ -839,7 +848,7 @@ void NuPlayer::onMessageReceived(const sp<AMessage> &msg) {
                 ALOGV("media rendering started");
                 notifyListener(MEDIA_STARTED, 0, 0);
             } else if (what == Renderer::kWhatAudioOffloadTearDown) {
-                ALOGV("Tear down audio offload, fall back to s/w path");
+                ALOGV("Tear down audio offload, fall back to s/w path if due to error.");
                 int64_t positionUs;
                 CHECK(msg->findInt64("positionUs", &positionUs));
                 int32_t reason;
@@ -851,11 +860,11 @@ void NuPlayer::onMessageReceived(const sp<AMessage> &msg) {
                 if (mVideoDecoder != NULL) {
                     mRenderer->flush(false /* audio */);
                 }
-                mRenderer->signalDisableOffloadAudio();
-                mOffloadAudio = false;
 
                 performSeek(positionUs, false /* needNotify */);
                 if (reason == Renderer::kDueToError) {
+                    mRenderer->signalDisableOffloadAudio();
+                    mOffloadAudio = false;
                     instantiateDecoder(true /* audio */, &mAudioDecoder);
                 }
             }
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
index 73bc829..42288a3 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
@@ -144,6 +144,10 @@ void NuPlayer::Renderer::signalDisableOffloadAudio() {
     (new AMessage(kWhatDisableOffloadAudio, id()))->post();
 }
 
+void NuPlayer::Renderer::signalEnableOffloadAudio() {
+    (new AMessage(kWhatEnableOffloadAudio, id()))->post();
+}
+
 void NuPlayer::Renderer::pause() {
     (new AMessage(kWhatPause, id()))->post();
 }
@@ -407,6 +411,12 @@ void NuPlayer::Renderer::onMessageReceived(const sp<AMessage> &msg) {
             break;
         }
 
+        case kWhatEnableOffloadAudio:
+        {
+            onEnableOffloadAudio();
+            break;
+        }
+
         case kWhatPause:
         {
             onPause();
@@ -1133,6 +1143,12 @@ void NuPlayer::Renderer::onDisableOffloadAudio() {
     ++mAudioQueueGeneration;
 }
 
+void NuPlayer::Renderer::onEnableOffloadAudio() {
+    Mutex::Autolock autoLock(mLock);
+    mFlags |= FLAG_OFFLOAD_AUDIO;
+    ++mAudioQueueGeneration;
+}
+
 void NuPlayer::Renderer::onPause() {
     if (mPaused) {
         ALOGW("Renderer::onPause() called while already paused!");
@@ -1416,6 +1432,9 @@ bool NuPlayer::Renderer::onOpenAudioSink(
     if (audioSinkChanged) {
         onAudioSinkChanged();
     }
+    if (offloadingAudio()) {
+        mAudioOffloadTornDown = false;
+    }
 
     return offloadingAudio();
 }
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.h b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.h
index 7b46a59..985ec49 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.h
@@ -53,6 +53,7 @@ struct NuPlayer::Renderer : public AHandler {
     void signalAudioSinkChanged();
 
     void signalDisableOffloadAudio();
+    void signalEnableOffloadAudio();
 
     void pause();
     void resume();
@@ -114,6 +115,7 @@ private:
         kWhatCloseAudioSink      = 'clsA',
         kWhatStopAudioSink       = 'stpA',
         kWhatDisableOffloadAudio = 'noOA',
+        kWhatEnableOffloadAudio  = 'enOA',
         kWhatSetVideoFrameRate   = 'sVFR',
     };
 
@@ -200,6 +202,7 @@ private:
     void onFlush(const sp<AMessage> &msg);
     void onAudioSinkChanged();
     void onDisableOffloadAudio();
+    void onEnableOffloadAudio();
     void onPause();
     void onResume();
     void onSetVideoFrameRate(float fps);
-- 
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