Implementing preload=metadata for video

media/filters/file_data_source.h

 // Copyright (c) 2011 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_FILE_DATA_SOURCE_H_
 #define MEDIA_FILTERS_FILE_DATA_SOURCE_H_
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
@@ skipping 14 matching lines @@
   // Implementation of Filter.
   virtual void set_host(FilterHost* filter_host);
   virtual void Stop(FilterCallback* callback);
 
   // Implementation of DataSource.
   virtual const MediaFormat& media_format();
   virtual void Read(int64 position, size_t size, uint8* data,
                     ReadCallback* read_callback);
   virtual bool GetSize(int64* size_out);
   virtual bool IsStreaming();
+  virtual void SetPreload(Preload preload);
 
  private:
   // Only allow factories and tests to create this object.
   //
   // TODO(scherkus): I'm getting tired of these factories getting in the way
   // of my tests!!!
   FRIEND_TEST_ALL_PREFIXES(FileDataSourceTest, OpenFile);
   FRIEND_TEST_ALL_PREFIXES(FileDataSourceTest, ReadData);
   FRIEND_TEST_ALL_PREFIXES(FileDataSourceTest, Seek);
 
@@ skipping 12 matching lines @@
   // that we will block for a short period of time in reads.  Otherwise, we can
   // hang the pipeline Stop.
   base::Lock lock_;
 
   DISALLOW_COPY_AND_ASSIGN(FileDataSource);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_FILE_DATA_SOURCE_H_