Bug 1536766 - Remove unused MediaStream::HasCurrentData. r=padenot

Differential Revision: https://phabricator.services.mozilla.com/D27266

--HG--
extra : moz-landing-system : lando

dom/media/MediaStreamGraph.cpp

@@ -1846,7 +1846,6 @@ MediaStream::MediaStream()
       mSuspendedCount(0),
       mFinished(false),
       mNotifiedFinished(false),
-      mHasCurrentData(false),
       mMainThreadCurrentTime(0),
       mMainThreadFinished(false),
       mFinishedNotificationSent(false),
@@ -2656,10 +2655,6 @@ void SourceMediaStream::ExtractPendingInput(GraphTime aCurrentTime,
     }
   }
 
-  if (mTracks.GetEarliestTrackEnd() > 0) {
-    mHasCurrentData = true;
-  }
-
   if (finished) {
     FinishOnGraphThread();
   }

dom/media/MediaStreamGraph.h

@@ -490,8 +490,6 @@ class MediaStream : public mozilla::LinkedListElement<MediaStream> {
   bool IsFinishedOnGraphThread() const { return mFinished; }
   virtual void FinishOnGraphThread();
 
-  bool HasCurrentData() const { return mHasCurrentData; }
-
   /**
    * Find track by track id.
    */
@@ -610,13 +608,6 @@ class MediaStream : public mozilla::LinkedListElement<MediaStream> {
    * and fired NotifyFinished notifications.
    */
   bool mNotifiedFinished;
-  /**
-   * True if some data can be present by this stream if/when it's unblocked.
-   * Set by the stream itself on the MediaStreamGraph thread. Only changes
-   * from false to true once a stream has data, since we won't
-   * unblock it until there's more data.
-   */
-  bool mHasCurrentData;
 
   // Main-thread views of state
   StreamTime mMainThreadCurrentTime;

dom/media/TrackUnionStream.cpp

@@ -81,7 +81,6 @@ void TrackUnionStream::ProcessInput(GraphTime aFrom, GraphTime aTo,
   inputs.AppendElements(mSuspendedInputs);
 
   bool allFinished = !inputs.IsEmpty();
-  bool allHaveCurrentData = !inputs.IsEmpty();
   for (uint32_t i = 0; i < inputs.Length(); ++i) {
     MediaStream* stream = inputs[i]->GetSource();
     if (!stream->IsFinishedOnGraphThread()) {
@@ -90,9 +89,6 @@ void TrackUnionStream::ProcessInput(GraphTime aFrom, GraphTime aTo,
       // runs out.
       allFinished = false;
     }
-    if (!stream->HasCurrentData()) {
-      allHaveCurrentData = false;
-    }
     for (StreamTracks::TrackIter tracks(stream->GetStreamTracks());
          !tracks.IsEnded(); tracks.Next()) {
       bool found = false;
@@ -144,10 +140,6 @@ void TrackUnionStream::ProcessInput(GraphTime aFrom, GraphTime aTo,
     // so we're finished now.
     FinishOnGraphThread();
   }
-  if (allHaveCurrentData) {
-    // We can make progress if we're not blocked
-    mHasCurrentData = true;
-  }
 }
 
 uint32_t TrackUnionStream::AddTrack(MediaInputPort* aPort,

dom/media/webaudio/AudioNodeStream.cpp

@@ -43,8 +43,6 @@ AudioNodeStream::AudioNodeStream(AudioNodeEngine* aEngine, Flags aFlags,
   mSuspendedCount = !(mIsActive || mFlags & EXTERNAL_OUTPUT);
   mChannelCountMode = ChannelCountMode::Max;
   mChannelInterpretation = ChannelInterpretation::Speakers;
-  // AudioNodes are always producing data
-  mHasCurrentData = true;
   mLastChunks.SetLength(std::max(uint16_t(1), mEngine->OutputCount()));
   MOZ_COUNT_CTOR(AudioNodeStream);
 }