Quantizer.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 BSD 2-clause license.
 *    Please see the LICENSE file in the root directory for details.
 *
 */
 
#pragma once
 
#include <cstdint>
 
 
namespace grk {
 
 
struct CodeStream;
 
struct grk_stepsize {
        uint8_t expn;
        uint16_t mant;
};
 
 
 
struct CodeStream;
struct TileComponentCodingParams;
struct BufferedStream;
struct grk_band;
struct TileCodingParams;
struct TileProcessor;
 
 
class Quantizer {
public:
 
        void setBandStepSizeAndBps( TileCodingParams *tcp,
                                                                grk_band *band,
                                                                uint32_t resno,
                                                                 uint8_t bandno,
                                                                TileComponentCodingParams *tccp,
                                                                uint32_t image_precision,
                                                                bool encode);
 
 
        uint32_t get_SQcd_SQcc_size(CodeStream *codeStream,     uint32_t comp_no);
        bool compare_SQcd_SQcc(CodeStream *codeStream,
                        uint32_t first_comp_no, uint32_t second_comp_no);
        bool read_SQcd_SQcc(CodeStream *codeStream, TileProcessor *tileProcessor, bool fromQCC, uint32_t comp_no,
                        uint8_t *p_header_data, uint16_t *header_size);
        bool write_SQcd_SQcc(CodeStream *codeStream,uint32_t comp_no, BufferedStream *stream);
        void apply_quant(TileComponentCodingParams *src, TileComponentCodingParams *dest);
};
 
}