Chrome-side implementation of media source timestamp offset

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);
 
+  // Sets a time |offset| in seconds to be applied to subsequent buffers
+  // appended to the source buffer assicated with |id|.
+  void TimestampOffset(const std::string& id, float offset);
+
+  // Clears a previously set timestamp offset.
+  void ClearTimestampOffset(const std::string& id);
+
   // 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);
   void Shutdown();
 
  protected:
   virtual ~ChunkDemuxer();
 
  private:
@@ skipping 58 matching lines @@
   std::string source_id_video_;
 
   base::TimeDelta start_time_;
 
   DISALLOW_COPY_AND_ASSIGN(ChunkDemuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_CHUNK_DEMUXER_H_