Support setting an explicit duration on MediaSource objects

media/filters/chunk_demuxer.h

 // Copyright (c) 2012 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_FILTERS_CHUNK_DEMUXER_H_
 #define MEDIA_FILTERS_CHUNK_DEMUXER_H_
 
 #include <map>
 #include <string>
 #include <utility>
@@ skipping 56 matching lines @@
   Ranges<base::TimeDelta> GetBufferedRanges(const std::string& id) const;
 
   // Appends media data to the source buffer associated with |id|. Returns
   // false if this method is called in an invalid state.
   bool AppendData(const std::string& id, const uint8* data, size_t length);
 
   // Aborts parsing the current segment and reset the parser to a state where
   // it can accept a new segment.
   void Abort(const std::string& id);
 
+  // Notifies the demuxer that the duration of the media has changed to
+  // |duration|.
+  void SetDuration(base::TimeDelta duration);
+
   // Sets a time |offset| to be applied to subsequent buffers appended to the
   // source buffer assicated with |id|. Returns true if the offset is set
   // properly, false if the offset cannot be applied because we're in the
   // middle of parsing a media segment.
   bool SetTimestampOffset(const std::string& id, base::TimeDelta offset);
 
   // Signals an EndOfStream request.
   // Returns false if called in an unexpected state or if there is a gap between
   // the current position and the end of the buffered data.
   bool EndOfStream(PipelineStatus status);
@@ skipping 94 matching lines @@
   // removed with RemoveID() but can not be re-added (yet).
   std::string source_id_audio_;
   std::string source_id_video_;
 
   DISALLOW_COPY_AND_ASSIGN(ChunkDemuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_CHUNK_DEMUXER_H_