1 // Copyright 2014 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 CONTENT_RENDERER_MEDIA_BUFFERED_DATA_SOURCE_HOST_IMPL_H_ 6 #define CONTENT_RENDERER_MEDIA_BUFFERED_DATA_SOURCE_HOST_IMPL_H_ 7 8 #include "base/time/time.h" 9 #include "content/common/content_export.h" 10 #include "content/renderer/media/buffered_data_source.h" 11 #include "media/base/ranges.h" 12 13 namespace content { 14 15 // Provides an implementation of BufferedDataSourceHost that translates the 16 // buffered byte ranges into estimated time ranges. 17 class CONTENT_EXPORT BufferedDataSourceHostImpl 18 : public BufferedDataSourceHost { 19 public: 20 BufferedDataSourceHostImpl(); 21 virtual ~BufferedDataSourceHostImpl(); 22 23 // BufferedDataSourceHost implementation. 24 virtual void SetTotalBytes(int64 total_bytes) OVERRIDE; 25 virtual void AddBufferedByteRange(int64 start, int64 end) OVERRIDE; 26 27 // Translate the byte ranges to time ranges and append them to the list. 28 // TODO(sandersd): This is a confusing name, find something better. 29 void AddBufferedTimeRanges( 30 media::Ranges<base::TimeDelta>* buffered_time_ranges, 31 base::TimeDelta media_duration) const; 32 33 bool DidLoadingProgress(); 34 35 private: 36 // Total size of the data source. 37 int64 total_bytes_; 38 39 // List of buffered byte ranges for estimating buffered time. 40 media::Ranges<int64> buffered_byte_ranges_; 41 42 // True when AddBufferedByteRange() has been called more recently than 43 // DidLoadingProgress(). 44 bool did_loading_progress_; 45 46 DISALLOW_COPY_AND_ASSIGN(BufferedDataSourceHostImpl); 47 }; 48 49 } // namespace content 50 51 #endif // CONTENT_RENDERER_MEDIA_BUFFERED_DATA_SOURCE_HOST_IMPL_H_ 52