URLRequestContext and disk cache for media files

net/disk_cache/entry_impl.h

 // Copyright (c) 2006-2008 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 NET_DISK_CACHE_ENTRY_IMPL_H__
 #define NET_DISK_CACHE_ENTRY_IMPL_H__
 
 #include "net/disk_cache/disk_cache.h"
 #include "net/disk_cache/storage_block.h"
 #include "net/disk_cache/storage_block-inl.h"
@@ skipping 14 matching lines @@
   virtual void Close();
   virtual std::string GetKey() const;
   virtual base::Time GetLastUsed() const;
   virtual base::Time GetLastModified() const;
   virtual int32 GetDataSize(int index) const;
   virtual int ReadData(int index, int offset, net::IOBuffer* buf, int buf_len,
                        net::CompletionCallback* completion_callback);
   virtual int WriteData(int index, int offset, net::IOBuffer* buf, int buf_len,
                         net::CompletionCallback* completion_callback,
                         bool truncate);
+  virtual base::PlatformFile UseExternalFile(int index);
+  virtual base::PlatformFile GetPlatformFile(int index);
 
   inline CacheEntryBlock* entry() {
     return &entry_;
   }
 
   inline CacheRankingsBlock* rankings() {
     return &node_;
   }
 
   uint32 GetHash();
 
   // Performs the initialization of a EntryImpl that will be added to the
   // cache.
-  bool CreateEntry(Addr node_address, const std::string& key,
-                   uint32 hash);
+  bool CreateEntry(Addr node_address, const std::string& key, uint32 hash);
 
   // Returns true if this entry matches the lookup arguments.
   bool IsSameEntry(const std::string& key, uint32 hash);
 
   // Permamently destroys this entry
   void InternalDoom();
 
   // Returns the address of the next entry on the list of entries with the same
   // hash.
   CacheAddr GetNextAddress();
@@ skipping 73 matching lines @@
   void Log(const char* msg);
 
   CacheEntryBlock entry_;     // Key related information for this entry.
   CacheRankingsBlock node_;   // Rankings related information for this entry.
   BackendImpl* backend_;      // Back pointer to the cache.
   scoped_array<char> user_buffers_[NUM_STREAMS];  // Store user data.
   scoped_refptr<File> files_[NUM_STREAMS + 1];  // Files to store external user
                                                 // data and key.
   int unreported_size_[NUM_STREAMS];  // Bytes not reported yet to the backend.
   bool doomed_;               // True if this entry was removed from the cache.
-
+  bool need_file_[NUM_STREAMS];  // True if stream is prepared as an external
+                                 // file.
   DISALLOW_EVIL_CONSTRUCTORS(EntryImpl);
 };
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_ENTRY_IMPL_H__