Function laszip_prepare_header_for_write

LASzip/src/laszip_dll.cpp:2007–2072

---------------------------------------------------------------------------*/

/*---------------------------------------------------------------------------*/
static I32
laszip_prepare_header_for_write(
    laszip_dll_struct*                 laszip_dll
)
{
  if ((laszip_dll->header.version_major != 1) || (laszip_dll->header.version_minor > 5))
  {
    snprintf(laszip_dll->error, sizeof(laszip_dll->error), "unknown LAS version %d.%d", (I32)laszip_dll->header.version_major, (I32)laszip_dll->header.version_minor);
    return 1;
  }

  // check counters
  U32 i;

  if (laszip_dll->header.point_data_format > 5)
  {
    // legacy counters are zero for new point types

    laszip_dll->header.number_of_point_records = 0;
    for (i = 0; i < 5; i++)
    {
      laszip_dll->header.number_of_points_by_return[i] = 0;
    }
  }
  else if (laszip_dll->header.version_minor > 3)
  {
    // legacy counters must be zero or consistent for old point types

    if (laszip_dll->header.number_of_point_records != laszip_dll->header.extended_number_of_point_records)
    {
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wformat"
#endif
      if (laszip_dll->header.number_of_point_records != 0)
      {
        snprintf(laszip_dll->error, sizeof(laszip_dll->error), "inconsistent number_of_point_records %lu and extended_number_of_point_records %llu", laszip_dll->header.number_of_point_records, laszip_dll->header.extended_number_of_point_records);
        return 1;
      }     
      else if (laszip_dll->header.extended_number_of_point_records <= U32_MAX)
      {
        laszip_dll->header.number_of_point_records = (U32)laszip_dll->header.extended_number_of_point_records;
      }
    }
    for (i = 0; i < 5; i++)
    {
      if (laszip_dll->header.number_of_points_by_return[i] != laszip_dll->header.extended_number_of_points_by_return[i])
      {
        if (laszip_dll->header.number_of_points_by_return[i] != 0)
        {
          snprintf(laszip_dll->error, sizeof(laszip_dll->error), "inconsistent number_of_points_by_return[%u] %lu and extended_number_of_points_by_return[%u] %llu", i, laszip_dll->header.number_of_points_by_return[i], i, laszip_dll->header.extended_number_of_points_by_return[i]);
          return 1;
        }   
        else if (laszip_dll->header.extended_number_of_points_by_return[i] <= U32_MAX)
        {
          laszip_dll->header.number_of_points_by_return[i] = (U32)laszip_dll->header.extended_number_of_points_by_return[i];
        }
#ifdef __GNUC__