Initial implementation of AudioTrack, AudioTrackList, VideoTrack, and VideoTrackList.

Source/core/html/HTMLMediaElement.h

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 31 matching lines @@
 class WebInbandTextTrack;
 class WebLayer;
 }
 
 namespace WebCore {
 
 #if ENABLE(WEB_AUDIO)
 class AudioSourceProvider;
 class MediaElementAudioSourceNode;
 #endif
+class AudioTrackList;
 class ContentType;
 class Event;
 class ExceptionState;
 class HTMLSourceElement;
 class HTMLTrackElement;
 class KURL;
 class MediaController;
 class MediaControls;
 class MediaError;
 class HTMLMediaSource;
 class TextTrackList;
 class TimeRanges;
 class URLRegistry;
+class VideoTrackList;
 
 typedef PODIntervalTree<double, TextTrackCue*> CueIntervalTree;
 typedef CueIntervalTree::IntervalType CueInterval;
 typedef Vector<CueInterval> CueList;
 
 // FIXME: The inheritance from MediaPlayerClient here should be private inheritance.
 // But it can't be until the Chromium WebMediaPlayerClientImpl class is fixed so it
 // no longer depends on typecasting a MediaPlayerClient to an HTMLMediaElement.
 
 class HTMLMediaElement : public Supplementable<HTMLMediaElement>, public HTMLElement, public MediaPlayerClient, public ActiveDOMObject, public MediaControllerInterface
@@ skipping 80 matching lines @@
     virtual double volume() const OVERRIDE FINAL;
     virtual void setVolume(double, ExceptionState&) OVERRIDE FINAL;
     virtual bool muted() const OVERRIDE FINAL;
     virtual void setMuted(bool) OVERRIDE FINAL;
 
     virtual void beginScrubbing() OVERRIDE FINAL;
     virtual void endScrubbing() OVERRIDE FINAL;
 
     virtual bool canPlay() const OVERRIDE FINAL;
 
+    AudioTrackList& audioTracks();
+    void audioTrackChanged(const String& audioTrackID);
+
+    VideoTrackList& videoTracks();
+    void selectedVideoTrackChanged(const String& selectedTrackID);
+
     PassRefPtr<TextTrack> addTextTrack(const AtomicString& kind, const AtomicString& label, const AtomicString& language, ExceptionState&);
     PassRefPtr<TextTrack> addTextTrack(const AtomicString& kind, const AtomicString& label, ExceptionState& exceptionState) { return addTextTrack(kind, label, emptyAtom, exceptionState); }
     PassRefPtr<TextTrack> addTextTrack(const AtomicString& kind, ExceptionState& exceptionState) { return addTextTrack(kind, emptyAtom, emptyAtom, exceptionState); }
 
     TextTrackList* textTracks();
     CueList currentlyActiveCues() const { return m_currentlyActiveCues; }
 
     void addTextTrack(TextTrack*);
     void removeTextTrack(TextTrack*);
     void closeCaptionTracksChanged();
     void notifyMediaPlayerOfTextTrackChanges();
 
     // Implements the "forget the media element's media-resource-specific tracks" algorithm in the HTML5 spec.
     void forgetResourceSpecificTracks();
 
     void didAddTrackElement(HTMLTrackElement*);
     void didRemoveTrackElement(HTMLTrackElement*);
 
+    void addVideoTrack(const String& id, blink::WebMediaPlayerClient::VideoTrackKind, const AtomicString& label, const AtomicString& language, bool selected);
+    void removeVideoTrack(const String& id);
+    void addAudioTrack(const String& id, blink::WebMediaPlayerClient::AudioTrackKind, const AtomicString& label, const AtomicString& language, bool enabled);
+    void removeAudioTrack(const String& id);
+
     virtual void mediaPlayerDidAddTextTrack(blink::WebInbandTextTrack*) OVERRIDE FINAL;
     virtual void mediaPlayerDidRemoveTextTrack(blink::WebInbandTextTrack*) OVERRIDE FINAL;
     // FIXME: Remove this when WebMediaPlayerClientImpl::loadInternal does not depend on it.
     virtual KURL mediaPlayerPosterURL() OVERRIDE { return KURL(); }
 
     struct TrackGroup {
         enum GroupKind { CaptionsAndSubtitles, Description, Chapter, Metadata, Other };
 
         TrackGroup(GroupKind kind)
             : visibleTrack(nullptr)
@@ skipping 214 matching lines @@
 
     void changeNetworkStateFromLoadingToIdle();
 
     const AtomicString& mediaGroup() const;
     void setMediaGroup(const AtomicString&);
     void updateMediaController();
     bool isBlocked() const;
     bool isBlockedOnMediaController() const;
     bool isAutoplaying() const { return m_autoplaying; }
 
+    // Creates placeholder AudioTrack and/or VideoTrack objects when WebMemediaPlayer objects
+    // advertise they have audio and/or video, but don't explicity signal them via
+    // mediaPlayerDidAddAudioTrack() and mediaPlayerDidAddVideoTrack().
+    // FIXME: Remove this once all WebMediaPlayer implementations properly report their track info.
+    void createPlaceholderTracksIfNecessary();
+
+    // Sets the selected/enabled tracks if they aren't set before we initially
+    // transition to HAVE_METADATA.
+    void selectInitialTracksIfNecessary();
+
+    void audioTracksTimerFired(Timer<HTMLMediaElement>*);
+
     Timer<HTMLMediaElement> m_loadTimer;
     Timer<HTMLMediaElement> m_progressEventTimer;
     Timer<HTMLMediaElement> m_playbackProgressTimer;
+    Timer<HTMLMediaElement> m_audioTracksTimer;
     RefPtr<TimeRanges> m_playedTimeRanges;
     OwnPtr<GenericEventQueue> m_asyncEventQueue;
 
     double m_playbackRate;
     double m_defaultPlaybackRate;
     NetworkState m_networkState;
     ReadyState m_readyState;
     ReadyState m_readyStateMaximum;
     KURL m_currentSrc;
 
@@ skipping 61 matching lines @@
     bool m_closedCaptionsVisible : 1;
 
     bool m_completelyLoaded : 1;
     bool m_havePreparedToPlay : 1;
 
     bool m_tracksAreReady : 1;
     bool m_haveVisibleTextTrack : 1;
     bool m_processingPreferenceChange : 1;
     double m_lastTextTrackUpdateTime;
 
+    RefPtr<AudioTrackList> m_audioTracks;
+    RefPtr<VideoTrackList> m_videoTracks;
     RefPtr<TextTrackList> m_textTracks;
     Vector<RefPtr<TextTrack> > m_textTracksWhenResourceSelectionBegan;
 
     CueIntervalTree m_cueTree;
 
     CueList m_currentlyActiveCues;
     int m_ignoreTrackDisplayUpdate;
 
 #if ENABLE(WEB_AUDIO)
     // This is a weak reference, since m_audioSourceNode holds a reference to us.
@@ skipping 37 matching lines @@
 inline bool isHTMLMediaElement(const Node* node)
 {
     return node && isHTMLMediaElement(*node);
 }
 
 DEFINE_ELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLMediaElement);
 
 } //namespace
 
 #endif