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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 // | 4 // |
5 // Filter performs filtering on data streams. Sample usage: | 5 // Filter performs filtering on data streams. Sample usage: |
6 // | 6 // |
7 // IStream* pre_filter_source; | 7 // IStream* pre_filter_source; |
8 // ... | 8 // ... |
9 // std::unique_ptr<Filter> filter = Filter::Factory(filter_type, size); | 9 // std::unique_ptr<Filter> filter = Filter::Factory(filter_type, size); |
10 // int pre_filter_data_len = filter->stream_buffer_size(); | 10 // int pre_filter_data_len = filter->stream_buffer_size(); |
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126 | 126 |
127 // The following method forces the context to emit a specific set of | 127 // The following method forces the context to emit a specific set of |
128 // statistics as selected by the argument. | 128 // statistics as selected by the argument. |
129 virtual void RecordPacketStats(StatisticSelector statistic) const = 0; | 129 virtual void RecordPacketStats(StatisticSelector statistic) const = 0; |
130 | 130 |
131 // The BoundNetLog of the associated request. | 131 // The BoundNetLog of the associated request. |
132 virtual const BoundNetLog& GetNetLog() const = 0; | 132 virtual const BoundNetLog& GetNetLog() const = 0; |
133 }; | 133 }; |
134 | 134 |
135 //------------------------------------------------------------------------------ | 135 //------------------------------------------------------------------------------ |
136 class NET_EXPORT_PRIVATE Filter { | 136 class NET_EXPORT Filter { |
137 public: | 137 public: |
138 // Return values of function ReadFilteredData. | 138 // Return values of function ReadFilteredData. |
139 enum FilterStatus { | 139 enum FilterStatus { |
140 // Read filtered data successfully | 140 // Read filtered data successfully |
141 FILTER_OK, | 141 FILTER_OK, |
142 // Read filtered data successfully, and the data in the buffer has been | 142 // Read filtered data successfully, and the data in the buffer has been |
143 // consumed by the filter, but more data is needed in order to continue | 143 // consumed by the filter, but more data is needed in order to continue |
144 // filtering. At this point, the caller is free to reuse the filter | 144 // filtering. At this point, the caller is free to reuse the filter |
145 // buffer to provide more data. | 145 // buffer to provide more data. |
146 FILTER_NEED_MORE_DATA, | 146 FILTER_NEED_MORE_DATA, |
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322 | 322 |
323 // The filter type this filter was constructed from. | 323 // The filter type this filter was constructed from. |
324 FilterType type_id_; | 324 FilterType type_id_; |
325 | 325 |
326 DISALLOW_COPY_AND_ASSIGN(Filter); | 326 DISALLOW_COPY_AND_ASSIGN(Filter); |
327 }; | 327 }; |
328 | 328 |
329 } // namespace net | 329 } // namespace net |
330 | 330 |
331 #endif // NET_FILTER_FILTER_H__ | 331 #endif // NET_FILTER_FILTER_H__ |
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