OLD | NEW |
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 // SdchFilter applies open_vcdiff content decoding to a datastream. | 5 // SdchFilter applies open_vcdiff content decoding to a datastream. |
6 // This decoding uses a pre-cached dictionary of text fragments to decode | 6 // This decoding uses a pre-cached dictionary of text fragments to decode |
7 // (expand) the stream back to its original contents. | 7 // (expand) the stream back to its original contents. |
8 // | 8 // |
9 // This SdchFilter internally uses open_vcdiff/vcdec library to do decoding. | 9 // This SdchFilter internally uses open_vcdiff/vcdec library to do decoding. |
10 // | 10 // |
(...skipping 33 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
44 int* dest_len) OVERRIDE; | 44 int* dest_len) OVERRIDE; |
45 | 45 |
46 private: | 46 private: |
47 // Internal status. Once we enter an error state, we stop processing data. | 47 // Internal status. Once we enter an error state, we stop processing data. |
48 enum DecodingStatus { | 48 enum DecodingStatus { |
49 DECODING_UNINITIALIZED, | 49 DECODING_UNINITIALIZED, |
50 WAITING_FOR_DICTIONARY_SELECTION, | 50 WAITING_FOR_DICTIONARY_SELECTION, |
51 DECODING_IN_PROGRESS, | 51 DECODING_IN_PROGRESS, |
52 DECODING_ERROR, | 52 DECODING_ERROR, |
53 META_REFRESH_RECOVERY, // Decoding error being handled by a meta-refresh. | 53 META_REFRESH_RECOVERY, // Decoding error being handled by a meta-refresh. |
54 PASS_THROUGH, // Non-sdch content being passed without alteration. | 54 PASS_THROUGH, // Non-sdch content being passed without alteration. |
55 }; | 55 }; |
56 | 56 |
57 // Only to be instantiated by Filter::Factory. | 57 // Only to be instantiated by Filter::Factory. |
58 explicit SdchFilter(const FilterContext& filter_context); | 58 explicit SdchFilter(const FilterContext& filter_context); |
59 friend class Filter; | 59 friend class Filter; |
60 | 60 |
61 // Identify the suggested dictionary, and initialize underlying decompressor. | 61 // Identify the suggested dictionary, and initialize underlying decompressor. |
62 Filter::FilterStatus InitializeDictionary(); | 62 Filter::FilterStatus InitializeDictionary(); |
63 | 63 |
64 // Move data that was internally buffered (after decompression) to the | 64 // Move data that was internally buffered (after decompression) to the |
(...skipping 54 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
119 // To facilitate error recovery, allow filter to know if content is text/html | 119 // To facilitate error recovery, allow filter to know if content is text/html |
120 // by checking within this mime type (we may do a meta-refresh via html). | 120 // by checking within this mime type (we may do a meta-refresh via html). |
121 std::string mime_type_; | 121 std::string mime_type_; |
122 | 122 |
123 DISALLOW_COPY_AND_ASSIGN(SdchFilter); | 123 DISALLOW_COPY_AND_ASSIGN(SdchFilter); |
124 }; | 124 }; |
125 | 125 |
126 } // namespace net | 126 } // namespace net |
127 | 127 |
128 #endif // NET_FILTER_SDCH_FILTER_H_ | 128 #endif // NET_FILTER_SDCH_FILTER_H_ |
OLD | NEW |