Current Dev State

static/js/ketcher2/node_modules/ttf2woff2/csrc/enc/metablock.h

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+// Copyright 2015 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Algorithms for distributing the literals and commands of a metablock between
+// block types and contexts.
+
+#ifndef BROTLI_ENC_METABLOCK_H_
+#define BROTLI_ENC_METABLOCK_H_
+
+#include <vector>
+
+#include "./command.h"
+#include "./histogram.h"
+
+namespace brotli {
+
+struct BlockSplit {
+  BlockSplit() : num_types(0) {}
+
+  int num_types;
+  std::vector<int> types;
+  std::vector<int> lengths;
+};
+
+struct MetaBlockSplit {
+  BlockSplit literal_split;
+  BlockSplit command_split;
+  BlockSplit distance_split;
+  std::vector<int> literal_context_map;
+  std::vector<int> distance_context_map;
+  std::vector<HistogramLiteral> literal_histograms;
+  std::vector<HistogramCommand> command_histograms;
+  std::vector<HistogramDistance> distance_histograms;
+};
+
+void BuildMetaBlock(const uint8_t* ringbuffer,
+                    const size_t pos,
+                    const size_t mask,
+                    uint8_t prev_byte,
+                    uint8_t prev_byte2,
+                    const Command* cmds,
+                    size_t num_commands,
+                    int literal_context_mode,
+                    bool enable_context_modleing,
+                    MetaBlockSplit* mb);
+
+void BuildMetaBlockGreedy(const uint8_t* ringbuffer,
+                          size_t pos,
+                          size_t mask,
+                          const Command *commands,
+                          size_t n_commands,
+                          MetaBlockSplit* mb);
+
+void OptimizeHistograms(int num_direct_distance_codes,
+                        int distance_postfix_bits,
+                        MetaBlockSplit* mb);
+
+}  // namespace brotli
+
+#endif  // BROTLI_ENC_METABLOCK_H_