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/* Copyright 2013 Google Inc. All Rights Reserved.
Distributed under MIT license.
See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
*/
// Block split point selection utilities.
#ifndef BROTLI_ENC_BLOCK_SPLITTER_H_
#define BROTLI_ENC_BLOCK_SPLITTER_H_
#include <vector>
#include "./command.h"
#include "./metablock.h"
#include "./types.h"
namespace brotli {
struct BlockSplitIterator {
explicit BlockSplitIterator(const BlockSplit& split)
: split_(split), idx_(0), type_(0), length_(0) {
if (!split.lengths.empty()) {
length_ = split.lengths[0];
}
}
void Next() {
if (length_ == 0) {
++idx_;
type_ = split_.types[idx_];
length_ = split_.lengths[idx_];
}
--length_;
}
const BlockSplit& split_;
size_t idx_;
size_t type_;
size_t length_;
};
void CopyLiteralsToByteArray(const Command* cmds,
const size_t num_commands,
const uint8_t* data,
const size_t offset,
const size_t mask,
std::vector<uint8_t>* literals);
void SplitBlock(const Command* cmds,
const size_t num_commands,
const uint8_t* data,
const size_t offset,
const size_t mask,
BlockSplit* literal_split,
BlockSplit* insert_and_copy_split,
BlockSplit* dist_split);
} // namespace brotli
#endif // BROTLI_ENC_BLOCK_SPLITTER_H_
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