Merge 105121 - Numerous fixes to audio/video buffered resource loading.

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"
 #include "base/synchronization/lock.h"
 #include "media/base/filters.h"
 
 namespace media {
 
 // Basic data source that treats the URL as a file path, and uses the file
 // system to read data for a media pipeline.
 class MEDIA_EXPORT FileDataSource : public DataSource {
  public:
   FileDataSource();
+  FileDataSource(bool disable_file_size);
   virtual ~FileDataSource();
 
   PipelineStatus Initialize(const std::string& url);
 
   // Implementation of Filter.
   virtual void set_host(FilterHost* filter_host);
   virtual void Stop(FilterCallback* callback);
 
   // Implementation of DataSource.
   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);
+  virtual void SetBitrate(int bitrate);
 
  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);
 
+  // Informs the host of changes in total and buffered bytes.
+  void UpdateHostBytes();
+
   // File handle.  NULL if not initialized or an error occurs.
   FILE* file_;
 
   // Size of the file in bytes.
   int64 file_size_;
 
+  // True if the FileDataSource should ignore its set file size, false
+  // otherwise.
+  bool disable_file_size_;
+
   // Critical section that protects all of the DataSource methods to prevent
   // a Stop from happening while in the middle of a file I/O operation.
   // TODO(ralphl): Ideally this would use asynchronous I/O or we will know
   // 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_