forked from mirrors/gecko-dev
265e672179
# ignore-this-changeset --HG-- extra : amend_source : 4d301d3b0b8711c4692392aa76088ba7fd7d1022
37 lines
1.4 KiB
C++
37 lines
1.4 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef RICE_DELTA_DECODER_H
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#define RICE_DELTA_DECODER_H
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namespace mozilla {
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namespace safebrowsing {
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class RiceDeltaDecoder {
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public:
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// This decoder is tailored for safebrowsing v4, including the
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// bit reading order and how the remainder part is interpreted.
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// The caller just needs to feed the byte stream received from
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// network directly. Note that the input buffer must be mutable
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// since the decoder will do some pre-processing before decoding.
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RiceDeltaDecoder(uint8_t* aEncodedData, size_t aEncodedDataSize);
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// @param aNumEntries The number of values to be decoded, not including
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// the first value.
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// @param aDecodedData A pre-allocated output buffer. Note that
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// aDecodedData[0] will be filled with |aFirstValue|
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// and the buffer length (in byte) should be
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// ((aNumEntries + 1) * sizeof(uint32_t)).
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bool Decode(uint32_t aRiceParameter, uint32_t aFirstValue,
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uint32_t aNumEntries, uint32_t* aDecodedData);
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private:
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uint8_t* mEncodedData;
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size_t mEncodedDataSize;
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};
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} // namespace safebrowsing
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} // namespace mozilla
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#endif // UPDATE_V4_DECODER_H
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