Extract metadata for media elements

In our current html5 media implemtation, we pretend everything is loaded and gave a temporary duration of 100 seconds to WebKit.
However, this will break things if developer do sth like video.seek(video.duration). Also, width and height information are not available.
This change adds a thread in browser process to extract media metadata from the elements, before reporting to WebKit that media is loaded.
This only works if wifi or ethernet is available.


Review URL: https://chromiumcodereview.appspot.com/12518035

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@191786 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 7 insertions, 2 deletions

diff --git a/webkit/media/android/webmediaplayer_android.cc b/webkit/media/android/webmediaplayer_android.cc
index 2cf9297..5b00e5d 100644
--- a/webkit/media/android/webmediaplayer_android.cc
+++ b/webkit/media/android/webmediaplayer_android.cc
@@ -284,7 +284,8 @@ unsigned WebMediaPlayerAndroid::videoDecodedByteCount() const {
   return 0;
 }
 
-void WebMediaPlayerAndroid::OnMediaPrepared(base::TimeDelta duration) {
+void WebMediaPlayerAndroid::OnMediaMetadataChanged(
+    base::TimeDelta duration, int width, int height, bool success) {
   if (url_.SchemeIs("file"))
     UpdateNetworkState(WebMediaPlayer::NetworkStateLoaded);
 
@@ -293,6 +294,9 @@ void WebMediaPlayerAndroid::OnMediaPrepared(base::TimeDelta duration) {
     UpdateReadyState(WebMediaPlayer::ReadyStateHaveEnoughData);
   }
 
+  if (success)
+    OnVideoSizeChanged(width, height);
+
   if (hasVideo() && !video_weblayer_ && client_->needsWebLayerForVideo()) {
     video_weblayer_.reset(
         new webkit::WebLayerImpl(cc::VideoLayer::Create(this)));
diff --git a/webkit/media/android/webmediaplayer_android.h b/webkit/media/android/webmediaplayer_android.h
index b5ad22e..a0fb5bb 100644
--- a/webkit/media/android/webmediaplayer_android.h
+++ b/webkit/media/android/webmediaplayer_android.h
@@ -104,7 +104,8 @@ class WebMediaPlayerAndroid
       OVERRIDE;
 
   // Media player callback handlers.
-  virtual void OnMediaPrepared(base::TimeDelta duration);
+  virtual void OnMediaMetadataChanged(base::TimeDelta duration, int width,
+                                      int height, bool success);
   virtual void OnPlaybackComplete();
   virtual void OnBufferingUpdate(int percentage);
   virtual void OnSeekComplete(base::TimeDelta current_time);