Update media duration if data is appended after the previous duration

media/base/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_BASE_DEMUXER_H_
 #define MEDIA_BASE_DEMUXER_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/time.h"
 #include "media/base/data_source.h"
 #include "media/base/demuxer_stream.h"
 #include "media/base/media_export.h"
 #include "media/base/pipeline_status.h"
 
 namespace media {
 
 class MEDIA_EXPORT DemuxerHost : public DataSourceHost {

[acolwell GONE FROM CHROMIUM, 2012/07/27 00:03:23]

Since AddBufferedTimeRange() is in here now, can we remove the DataSourceHost
inheritance? If so, but it triggers a bunch of changes. Consider peeling this
off into a separate CL.

[vrk (LEFT CHROMIUM), 2012/07/28 01:42:05]

Possibly, I need to chat with you about it though.
Reverted the files for now.

  public:
   // Sets the duration of the media in microseconds.
   // Duration may be kInfiniteDuration() if the duration is not known.
   virtual void SetDuration(base::TimeDelta duration) = 0;
 
   // Stops execution of the pipeline due to a fatal error.  Do not call this
   // method with PIPELINE_OK.
   virtual void OnDemuxerError(PipelineStatus error) = 0;
 
+  // Notify the host that time range [start,end] has been buffered.
+  virtual void AddBufferedTimeRange(base::TimeDelta start,
+                                    base::TimeDelta end) = 0;
+
  protected:
   virtual ~DemuxerHost();
 };
 
 class MEDIA_EXPORT Demuxer : public base::RefCountedThreadSafe<Demuxer> {
  public:
   Demuxer();
 
   // Completes initialization of the demuxer.
   //
@@ skipping 35 matching lines @@
   friend class base::RefCountedThreadSafe<Demuxer>;
   virtual ~Demuxer();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Demuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_DEMUXER_H_