fork(1) download 
  1. template <typename T> // T is either uint8_t, uint16_t or uint32_t
  2. size_t PackedIndices::unpackIndices(const uint8_t*& buffer, 
  3.                                       T* indices, 
  4.                                       size_t cnt) const
  5. {
  6.     __try
  7.     {
  8.         // read first index
  9.         uint32_t index = static_cast<uint32_t>(indexPacker_.unpack(buffer));
  10.         T* p = indices;
  11.  
  12.         (*p++) = static_cast<T>(index);
  13.  
  14.         for (size_t i = 1; i < cnt; ++i)
  15.         {
  16.             int64_t delta = indexPacker_.unpack(buffer);
  17.             index = (uint32_t)(delta + index);
  18.             (*p++) = static_cast<T>(index);
  19.         }
  20.  
  21.         return p - indices; 
  22.     }
  23.     __except(EXCEPTION_EXECUTE_HANDLER)
  24.     {
  25.         DebugBreak();
  26.     }
  27. }
  28.  
  29. //------------------------------------------------------------------------------
  30. size_t PackedIndices::unpack(const uint8_t*& buffer, 
  31.                              void* indices, 
  32.                              size_t byteCount) const
  33. {
  34.     // get stored index count
  35.     size_t cnt = SizePacker().unpack(buffer);
  36.     if (cnt == 0)
  37.         return 0;
  38.  
  39.     uint8_t width = WidthPacker().unpack(buffer);
  40.     if (cnt * width > byteCount)
  41.         throw std::invalid_argument("Incorrect buffer size");
  42.  
  43.     // get data width
  44.     switch (width)
  45.     {
  46.     case 1: return unpackIndices(buffer, static_cast<uint8_t*>(indices), cnt);
  47.     case 2: return unpackIndices(buffer, static_cast<uint16_t*>(indices), cnt);
  48.     case 4: return unpackIndices(buffer, static_cast<uint32_t*>(indices), cnt);
  49.     default: return 0;
  50.     }
  51. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp:2:1: error: 'size_t' does not name a type
prog.cpp:30:8: error: expected constructor, destructor, or type conversion before 'PackedIndices'
stdout 
Standard output is empty
https://ideone.com/sVVXX7
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!