From bc2fb720bbd0acd122bacc67e844e982d068f6f9 Mon Sep 17 00:00:00 2001
From: Wei Jia <wjia@google.com>
Date: Tue, 8 Jul 2014 16:37:57 -0700
Subject: Add support of audio offloading for NuPlayer.

Change-Id: Ic83973339fb46a83b48382e6097925f45d200867
---
 .../nuplayer/NuPlayerRenderer.h                    | 37 ++++++++++++++++------
 1 file changed, 27 insertions(+), 10 deletions(-)

(limited to 'media/libmediaplayerservice/nuplayer/NuPlayerRenderer.h')

diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.h b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.h
index 94a05ea..6e86a8f 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.h
@@ -27,11 +27,17 @@ struct ABuffer;
 struct NuPlayer::Renderer : public AHandler {
     enum Flags {
         FLAG_REAL_TIME = 1,
+        FLAG_OFFLOAD_AUDIO = 2,
     };
     Renderer(const sp<MediaPlayerBase::AudioSink> &sink,
              const sp<AMessage> &notify,
              uint32_t flags = 0);
 
+    static size_t AudioSinkCallback(
+            MediaPlayerBase::AudioSink *audioSink,
+            void *data, size_t size, void *me,
+            MediaPlayerBase::AudioSink::cb_event_t event);
+
     void queueBuffer(
             bool audio,
             const sp<ABuffer> &buffer,
@@ -45,6 +51,8 @@ struct NuPlayer::Renderer : public AHandler {
 
     void signalAudioSinkChanged();
 
+    void signalDisableOffloadAudio();
+
     void pause();
     void resume();
 
@@ -63,14 +71,16 @@ protected:
 
 private:
     enum {
-        kWhatDrainAudioQueue    = 'draA',
-        kWhatDrainVideoQueue    = 'draV',
-        kWhatQueueBuffer        = 'queB',
-        kWhatQueueEOS           = 'qEOS',
-        kWhatFlush              = 'flus',
-        kWhatAudioSinkChanged   = 'auSC',
-        kWhatPause              = 'paus',
-        kWhatResume             = 'resm',
+        kWhatDrainAudioQueue     = 'draA',
+        kWhatDrainVideoQueue     = 'draV',
+        kWhatQueueBuffer         = 'queB',
+        kWhatQueueEOS            = 'qEOS',
+        kWhatFlush               = 'flus',
+        kWhatAudioSinkChanged    = 'auSC',
+        kWhatPause               = 'paus',
+        kWhatResume              = 'resm',
+        kWhatStopAudioSink       = 'stpA',
+        kWhatDisableOffloadAudio = 'noOA',
     };
 
     struct QueueEntry {
@@ -84,6 +94,7 @@ private:
 
     sp<MediaPlayerBase::AudioSink> mAudioSink;
     sp<AMessage> mNotify;
+    Mutex mLock;
     uint32_t mFlags;
     List<QueueEntry> mAudioQueue;
     List<QueueEntry> mVideoQueue;
@@ -94,6 +105,7 @@ private:
     int32_t mAudioQueueGeneration;
     int32_t mVideoQueueGeneration;
 
+    int64_t mFirstAudioTimeUs;
     int64_t mAnchorTimeMediaUs;
     int64_t mAnchorTimeRealUs;
 
@@ -113,8 +125,10 @@ private:
     int64_t mLastPositionUpdateUs;
     int64_t mVideoLateByUs;
 
+    size_t fillAudioBuffer(void *buffer, size_t size);
+
     bool onDrainAudioQueue();
-    void postDrainAudioQueue(int64_t delayUs = 0);
+    void postDrainAudioQueue_l(int64_t delayUs = 0);
 
     void onDrainVideoQueue();
     void postDrainVideoQueue();
@@ -126,6 +140,7 @@ private:
     void onQueueEOS(const sp<AMessage> &msg);
     void onFlush(const sp<AMessage> &msg);
     void onAudioSinkChanged();
+    void onDisableOffloadAudio();
     void onPause();
     void onResume();
 
@@ -137,7 +152,9 @@ private:
 
     void flushQueue(List<QueueEntry> *queue);
     bool dropBufferWhileFlushing(bool audio, const sp<AMessage> &msg);
-    void syncQueuesDone();
+    void syncQueuesDone_l();
+
+    bool offloadingAudio() const { return (mFlags & FLAG_OFFLOAD_AUDIO) != 0; }
 
     DISALLOW_EVIL_CONSTRUCTORS(Renderer);
 };
-- 
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