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Diffstat (limited to '')
-rw-r--r-- | web/server/h2o/libh2o/deps/brotli/enc/compress_fragment.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/web/server/h2o/libh2o/deps/brotli/enc/compress_fragment.h b/web/server/h2o/libh2o/deps/brotli/enc/compress_fragment.h new file mode 100644 index 000000000..7ce05fdfb --- /dev/null +++ b/web/server/h2o/libh2o/deps/brotli/enc/compress_fragment.h @@ -0,0 +1,47 @@ +/* Copyright 2015 Google Inc. All Rights Reserved. + + Distributed under MIT license. + See file LICENSE for detail or copy at https://opensource.org/licenses/MIT +*/ + +// Function for fast encoding of an input fragment, independently from the input +// history. This function uses one-pass processing: when we find a backward +// match, we immediately emit the corresponding command and literal codes to +// the bit stream. + +#ifndef BROTLI_ENC_COMPRESS_FRAGMENT_H_ +#define BROTLI_ENC_COMPRESS_FRAGMENT_H_ + +#include "./types.h" + +namespace brotli { + +// Compresses "input" string to the "*storage" buffer as one or more complete +// meta-blocks, and updates the "*storage_ix" bit position. +// +// If "is_last" is true, emits an additional empty last meta-block. +// +// "cmd_depth" and "cmd_bits" contain the command and distance prefix codes +// (see comment in encode.h) used for the encoding of this input fragment. +// If "is_last" is false, they are updated to reflect the statistics +// of this input fragment, to be used for the encoding of the next fragment. +// +// "*cmd_code_numbits" is the number of bits of the compressed representation +// of the command and distance prefix codes, and "cmd_code" is an array of +// at least "(*cmd_code_numbits + 7) >> 3" size that contains the compressed +// command and distance prefix codes. If "is_last" is false, these are also +// updated to represent the updated "cmd_depth" and "cmd_bits". +// +// REQUIRES: "input_size" is greater than zero, or "is_last" is true. +// REQUIRES: All elements in "table[0..table_size-1]" are initialized to zero. +// REQUIRES: "table_size" is a power of two +void BrotliCompressFragmentFast(const uint8_t* input, size_t input_size, + bool is_last, + int* table, size_t table_size, + uint8_t cmd_depth[128], uint16_t cmd_bits[128], + size_t* cmd_code_numbits, uint8_t* cmd_code, + size_t* storage_ix, uint8_t* storage); + +} // namespace brotli + +#endif // BROTLI_ENC_COMPRESS_FRAGMENT_H_ |