fully cache small audio/video

media/blink/url_index.h

 // Copyright 2015 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_BLINK_URL_INDEX_H_
 #define MEDIA_BLINK_URL_INDEX_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 73 matching lines @@
 
   // The key used by UrlIndex to find this UrlData.
   KeyType key() const;
 
   // Length of data associated with url or |kPositionNotSpecified|
   int64_t length() const { return length_; }
 
   // Returns the number of blocks cached for this resource.
   size_t CachedSize();
 
+  // Returns true if this resource is fully cached in memory.
+  bool FullyCached();
+
   // Returns our url_index, or nullptr if it's been destroyed.
   UrlIndex* url_index() const { return url_index_.get(); }
 
   // Notifies the url index that this is currently used.
   // The url <-> URLData mapping will be eventually be invalidated if
   // this is not called regularly.
   void Use();
 
   // Call this before we add some data to the multibuffer().
   // If the multibuffer is empty, the data origin is set from
@@ skipping 20 matching lines @@
   typedef base::Callback<void(const scoped_refptr<UrlData>&)> RedirectCB;
 
   // Register a callback to be called when a redirect occurs.
   // Callbacks are cleared when a redirect occurs, so clients must call
   // OnRedirect again if they wish to continue receiving callbacks.
   void OnRedirect(const RedirectCB& cb);
 
   // Returns true it is valid to keep using this to access cached data.
   // A single media player instance may choose to ignore this for resources
   // that have already been opened.
-  bool Valid() const;
+  bool Valid();
 
   // Virtual so we can override it for testing.
   virtual ResourceMultiBuffer* multibuffer();
 
   // Accessor
   blink::WebFrame* frame() const { return frame_; }
 
   void AddBytesRead(int64_t b) { bytes_read_from_cache_ += b; }
   int64_t BytesReadFromCache() { return bytes_read_from_cache_; }
 
@@ skipping 113 matching lines @@
   // log2 of block size in multibuffer cache. Defaults to kBlockSizeShift.
   // Currently only changed for testing purposes.
   const int block_shift_;
 
  protected:
   base::WeakPtrFactory<UrlIndex> weak_factory_;
 };
 
 }  // namespace media
 #endif  // MEDIA_BLINK_URL_INDEX_H_