TextRenderer only pushes new cues downstream

media/base/text_renderer.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_BASE_TEXT_RENDERER_H_
 #define MEDIA_BASE_TEXT_RENDERER_H_
 
 #include <map>
 #include <set>
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "media/base/demuxer_stream.h"
 #include "media/base/media_export.h"
 #include "media/base/pipeline_status.h"
+#include "media/base/text_ranges.h"
 #include "media/base/text_track.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace media {
 
 class TextCue;
 class TextTrackConfig;
@@ skipping 48 matching lines @@
     enum ReadState {
       kReadIdle,
       kReadPending
     };
 
     explicit TextTrackState(scoped_ptr<TextTrack> text_track);
     ~TextTrackState();
 
     ReadState read_state;
     scoped_ptr<TextTrack> text_track;
+    TextRanges text_ranges_;
   };
 
   // Callback delivered by the demuxer |text_stream| when
   // a read from the stream completes.
   void BufferReady(DemuxerStream* text_stream,
                    DemuxerStream::Status status,
                    const scoped_refptr<DecoderBuffer>& input);
 
   // Dispatches the decoded cue delivered on the demuxer's |text_stream|.
   void CueReady(DemuxerStream* text_stream,
@@ skipping 42 matching lines @@
   // Indicates which text streams have not delivered end-of-stream yet.
   typedef std::set<DemuxerStream*> PendingEosSet;
   PendingEosSet pending_eos_set_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(TextRenderer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_TEXT_RENDERER_H_