#include <cassert>
#include <vector>

#include <boost/gil/gil_all.hpp>

using namespace boost;
using namespace gil;

int main()
{
  typedef bit_aligned_image1_type< 3, gray_layout_t >::type gray3_image_t;
  typedef gray3_image_t image_t;

  typedef image_t::view_t view_t;
  typedef view_t::reference ref_t;

  typedef bit_aligned_pixel_iterator< ref_t > iterator_t;

  std::vector< unsigned char > buf( 4 );
  // bit pattern is: 1011 0110  0110 1101  1101 1011
  // each byte is read right to left
  buf[0] = 182;
  buf[1] = 109;
  buf[2] = 219;

  iterator_t it( &buf[0], 0 );

  ref_t p1 = *it; it++;
  ref_t p2 = *it; it++;
  ref_t p3 = *it; it++;
  ref_t p4 = *it; it++;
  ref_t p5 = *it; it++;
  ref_t p6 = *it; it++;
  ref_t p7 = *it; it++;
  ref_t p8 = *it; it++;

  unsigned char v1 = get_color( p1, gray_color_t() );
  unsigned char v2 = get_color( p2, gray_color_t() );
  unsigned char v3 = get_color( p3, gray_color_t() );
  unsigned char v4 = get_color( p4, gray_color_t() );
  unsigned char v5 = get_color( p5, gray_color_t() );
  unsigned char v6 = get_color( p6, gray_color_t() );
  unsigned char v7 = get_color( p7, gray_color_t() );
  unsigned char v8 = get_color( p8, gray_color_t() );

  // all values should be 110b ( 6 );
  assert( v1 == 6 );
  assert( v2 == 6 );
  assert( v3 == 6 );
  assert( v4 == 6 );
  assert( v5 == 6 );
  assert( v6 == 6 );
  assert( v7 == 6 );
  assert( v8 == 6 );

  return 0;
}