Method processRecords

plugins/e57/libE57Format/src/Encoder.cpp:398–467

}

uint64_t BitpackFloatEncoder::processRecords( size_t recordCount )
{
#ifdef E57_VERBOSE
   std::cout << "  BitpackFloatEncoder::processRecords() called, recordCount=" << recordCount
             << std::endl; //???
#endif

   // Before we add any more, try to shift current contents of outBuffer_ down to beginning of
   // buffer. This leaves outBufferEnd_ at a natural boundary.
   outBufferShiftDown();

   size_t typeSize = ( precision_ == PrecisionSingle ) ? sizeof( float ) : sizeof( double );

#if VALIDATE_BASIC
   // Verify that outBufferEnd_ is multiple of typeSize (so transfers of floats are aligned
   // naturally in memory).
   if ( outBufferEnd_ % typeSize )
   {
      throw E57_EXCEPTION2( ErrorInternal, "outBufferEnd=" + toString( outBufferEnd_ ) +
                                              " typeSize=" + toString( typeSize ) );
   }
#endif

   // Figure out how many records will fit in output.
   size_t maxOutputRecords = ( outBuffer_.size() - outBufferEnd_ ) / typeSize;

   // Can't process more records than will safely fit in output stream
   if ( recordCount > maxOutputRecords )
   {
      recordCount = maxOutputRecords;
   }

   if ( precision_ == PrecisionSingle )
   {
      // Form the starting address for next available location in outBuffer
      auto outp = reinterpret_cast<float *>( &outBuffer_[outBufferEnd_] );

      // Copy floats from sourceBuffer_ to outBuffer_
      for ( unsigned i = 0; i < recordCount; i++ )
      {
         outp[i] = sourceBuffer_->getNextFloat();
#ifdef E57_VERBOSE
         std::cout << "encoding float: " << outp[i] << std::endl;
#endif
      }
   }
   else
   {
      // Double precision
      // Form the starting address for next available location in outBuffer
      auto outp = reinterpret_cast<double *>( &outBuffer_[outBufferEnd_] );

      // Copy doubles from sourceBuffer_ to outBuffer_
      for ( unsigned i = 0; i < recordCount; i++ )
      {
         outp[i] = sourceBuffer_->getNextDouble();
#ifdef E57_VERBOSE
         std::cout << "encoding double: " << outp[i] << std::endl;