icc_codec.h - mozsearch

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// Copyright (c) the JPEG XL Project Authors. All rights reserved.

//

// Use of this source code is governed by a BSD-style

// license that can be found in the LICENSE file.

#ifndef LIB_JXL_ICC_CODEC_H_

#define LIB_JXL_ICC_CODEC_H_

// Compressed representation of ICC profiles.

#include <jxl/memory_manager.h>

#include <cstddef>

#include <cstdint>

#include <vector>

#include "lib/jxl/base/status.h"

#include "lib/jxl/dec_ans.h"

#include "lib/jxl/dec_bit_reader.h"

#include "lib/jxl/padded_bytes.h"

namespace jxl {

struct ICCReader {

  explicit ICCReader(JxlMemoryManager* memory_manager)

      : decompressed_(memory_manager) {}

  Status Init(BitReader* reader);

  Status Process(BitReader* reader, PaddedBytes* icc);

  void Reset() {

    bits_to_skip_ = 0;

    decompressed_.clear();

 private:

  static Status CheckEOI(BitReader* reader);

  size_t i_ = 0;

  size_t bits_to_skip_ = 0;

  size_t used_bits_base_ = 0;

  uint64_t enc_size_ = 0;

  std::vector<uint8_t> context_map_;

  ANSCode code_;

  ANSSymbolReader ans_reader_;

  PaddedBytes decompressed_;

};

}  // namespace jxl

#endif  // LIB_JXL_ICC_CODEC_H_