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| 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_ | |
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