graphengine/inc/common/util/compress/compress.h

/**
 * Copyright 2019-2020 Huawei Technologies Co., Ltd
 *
 * 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.
 */

#ifndef COMPRESS_H
#define COMPRESS_H

#include <uchar.h>

enum CmpStatus { RET_SUCCESS = 0, RET_ERROR = -1 };

struct CompressConfig {
  size_t inputSize;    // length of data to compress
  size_t engineNum;    // how many decompress engines
  size_t maxRatio;     // how much size of a basic compression block, only 64 supported now (8x: 64 4x: 32)
  size_t channel;      // channels of L2 or DDR. For load balance
  size_t fractalSize;  // size of compressing block
  bool isTight;        // whether compose compressed data tightly
  size_t init_offset;
};

CmpStatus CompressWeights(char* input, const CompressConfig& compressConfig, char* indexs, char* output,
                          size_t& compressedLength);

#endif  // COMPRESS_H