libuuu/sparse.h

   1 /*
   2 * Copyright 2018 NXP.
   3 *
   4 * Redistribution and use in source and binary forms, with or without modification,
   5 * are permitted provided that the following conditions are met:
   6 *
   7 * Redistributions of source code must retain the above copyright notice, this
   8 * list of conditions and the following disclaimer.
   9 *
  10 * Redistributions in binary form must reproduce the above copyright notice, this
  11 * list of conditions and the following disclaimer in the documentation and/or
  12 * other materials provided with the distribution.
  13 *
  14 * Neither the name of the NXP Semiconductor nor the names of its
  15 * contributors may be used to endorse or promote products derived from this
  16 * software without specific prior written permission.
  17 *
  18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28 * POSSIBILITY OF SUCH DAMAGE.
  29 *
  30 */
  31 #pragma once
  32
  33 #include "sparse_format.h"
  34
  35 #include <cstddef>
  36 #include <vector>
  37
  38 class SparseFile
  39 {
  40 public:
  41         std::vector<uint8_t> m_data;
  42
  43         static chunk_header_t * get_next_chunk(uint8_t *p, size_t &pos);
  44
  45         int init_header(size_t blsz, int blcount);
  46
  47         bool is_append_old_chuck(int type, void *p);
  48         bool is_same_value(void *data, size_t sz);
  49         static bool is_validate_sparse_file(void *p, size_t sz);
  50
  51         int push(void *p, size_t sz);
  52         int push_one_block(void *data, bool skip=false);
  53         size_t push_one_chuck(chunk_header_t *p, void *data);
  54         size_t push_raw_data(void *data, size_t sz);
  55
  56 private:
  57         size_t m_cur_chunk_header_pos;
  58         size_t m_max_size;
  59         uint32_t *m_pcrc;
  60 };