HTParams.h

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/*
 *    Copyright (C) 2016-2020 Grok Image Compression Inc.
 *
 *    This source code is free software: you can redistribute it and/or  modify
 *    it under the terms of the GNU Affero General Public License, version 3,
 *    as published by the Free Software Foundation.
 *
 *    This source code is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU Affero General Public License for more details.
 *
 *    You should have received a copy of the GNU Affero General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *
 *    This source code incorporates work covered by the following license:
 */
// This software is released under the 2-Clause BSD license, included
// below.
//
// Copyright (c) 2019, Aous Naman
// Copyright (c) 2019, Kakadu Software Pty Ltd, Australia
// Copyright (c) 2019, The University of New South Wales, Australia
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//***************************************************************************/
// This file is part of the OpenJPH software implementation.
// File: ojph_expand.cpp
// Author: Aous Naman
// Date: 28 August 2019
//***************************************************************************/
 
 
#pragma once
 
#include <algorithm>
#include <cstdint>
#include <cstring>
using namespace std;
 
namespace grk {
 
class sqrt_energy_gains
{
public:
  static float get_gain_l(uint32_t num_decomp, bool reversible);
  static float get_gain_h(uint32_t num_decomp, bool reversible);
private:
  static const float gain_9x7_l[34];
  static const float gain_9x7_h[34];
  static const float gain_5x3_l[34];
  static const float gain_5x3_h[34];
};
 
struct param_qcd
{
public:
  param_qcd() :   Sqcd(0),
                          num_decomps(0),
                          base_delta(-1.0f)
  {
        memset(u8_SPqcd, 0, 97);
        memset(u16_SPqcd, 0, 97*sizeof(short));
  }
 
  void set_delta(float delta) { base_delta = delta; }
  void set_rev_quant(uint32_t bit_depth, bool is_employing_color_transform);
  void set_irrev_quant();
 
  void generate(uint8_t guard_bits,
                  uint32_t decomps,bool is_reversible,
                  uint32_t max_bit_depth, bool color_transform, bool is_signed );
 
  uint32_t get_num_guard_bits() const;
  uint32_t get_MAGBp() const;
 
  void pull(grk_stepsize* stepptr, bool reversible);
  void push(grk_stepsize* stepptr, bool reversible);
 
private:
  uint8_t Sqcd;
  union
  {
        uint8_t u8_SPqcd[97];
        uint16_t u16_SPqcd[97];
  };
  uint32_t num_decomps;
  float base_delta;
};
 
}