commit 9816016afb2a13c6a866cd047d57020566a8b9a9
author Wei Jia <wjia@google.com> Wed Feb 04 17:01:11 2015 -0800
committer Wei Jia <wjia@google.com> Tue Feb 24 16:34:11 2015 -0800
tree 176a616a7d5da21447e880158cef57516efee9c3
parent 658fc18d8e632441cd5d83a4f74b53620cbac1fe

mediaplayer: support dynamic playback rate

Bug: 19196501

Change-Id: I856b1507d5fa2cedfb645706d2435683a7d3e050

media/libmediaplayerservice/nuplayer/NuPlayer.cpp

diff --git a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
index fb8dbce..0d19fe9 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
@@ -180,6 +180,7 @@
       mFlushingVideo(NONE),
       mResumePending(false),
       mVideoScalingMode(NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW),
+      mPlaybackRate(1.0),
       mStarted(false),
       mPaused(false),
       mPausedByClient(false) {
@@ -314,6 +315,12 @@
     (new AMessage(kWhatStart, id()))->post();
 }
 
+void NuPlayer::setPlaybackRate(float rate) {
+    sp<AMessage> msg = new AMessage(kWhatSetRate, id());
+    msg->setFloat("rate", rate);
+    msg->post();
+}
+
 void NuPlayer::pause() {
     (new AMessage(kWhatPause, id()))->post();
 }
@@ -604,6 +611,16 @@
             break;
         }
 
+        case kWhatSetRate:
+        {
+            ALOGV("kWhatSetRate");
+            CHECK(msg->findFloat("rate", &mPlaybackRate));
+            if (mRenderer != NULL) {
+                mRenderer->setPlaybackRate(mPlaybackRate);
+            }
+            break;
+        }
+
         case kWhatScanSources:
         {
             int32_t generation;
@@ -1048,6 +1065,9 @@
     ++mRendererGeneration;
     notify->setInt32("generation", mRendererGeneration);
     mRenderer = new Renderer(mAudioSink, notify, flags);
+    if (mPlaybackRate != 1.0) {
+        mRenderer->setPlaybackRate(mPlaybackRate);
+    }
 
     mRendererLooper = new ALooper;
     mRendererLooper->setName("NuPlayerRenderer");