1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef MEDIA_FILTERS_FILE_DATA_SOURCE_H_ 6 #define MEDIA_FILTERS_FILE_DATA_SOURCE_H_ 7 8 #include <string> 9 10 #include "base/files/file.h" 11 #include "base/files/file_path.h" 12 #include "base/files/memory_mapped_file.h" 13 #include "media/base/data_source.h" 14 15 namespace media { 16 17 // Basic data source that treats the URL as a file path, and uses the file 18 // system to read data for a media pipeline. 19 class MEDIA_EXPORT FileDataSource : public DataSource { 20 public: 21 FileDataSource(); 22 explicit FileDataSource(base::File file); 23 virtual ~FileDataSource(); 24 25 bool Initialize(const base::FilePath& file_path); 26 27 // Implementation of DataSource. 28 virtual void Stop() OVERRIDE; 29 virtual void Read(int64 position, int size, uint8* data, 30 const DataSource::ReadCB& read_cb) OVERRIDE; 31 virtual bool GetSize(int64* size_out) OVERRIDE; 32 virtual bool IsStreaming() OVERRIDE; 33 virtual void SetBitrate(int bitrate) OVERRIDE; 34 35 // Unit test helpers. Recreate the object if you want the default behaviour. 36 void force_read_errors_for_testing() { force_read_errors_ = true; } 37 void force_streaming_for_testing() { force_streaming_ = true; } 38 39 private: 40 base::MemoryMappedFile file_; 41 42 bool force_read_errors_; 43 bool force_streaming_; 44 45 DISALLOW_COPY_AND_ASSIGN(FileDataSource); 46 }; 47 48 } // namespace media 49 50 #endif // MEDIA_FILTERS_FILE_DATA_SOURCE_H_ 51
