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Update pixel design documentation for MP11 changes #626

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Oct 4, 2021
Merged

Update pixel design documentation for MP11 changes #626

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8 changes: 4 additions & 4 deletions doc/design/pixel.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -183,13 +183,13 @@ such packed pixel formats:
.. code-block:: cpp

// define an rgb565 pixel
typedef packed_pixel_type<uint16_t, mpl::vector3_c<unsigned,5,6,5>, rgb_layout_t>::type rgb565_pixel_t;
typedef packed_pixel_type<uint16_t, mp11::mp_list_c<unsigned,5,6,5>, rgb_layout_t>::type rgb565_pixel_t;

function_requires<PixelValueConcept<rgb565_pixel_t> >();
static_assert(sizeof(rgb565_pixel_t) == 2, "");

// define a bgr556 pixel
typedef packed_pixel_type<uint16_t, mpl::vector3_c<unsigned,5,6,5>, bgr_layout_t>::type bgr556_pixel_t;
typedef packed_pixel_type<uint16_t, mp11::mp_list_c<unsigned,5,6,5>, bgr_layout_t>::type bgr556_pixel_t;

function_requires<PixelValueConcept<bgr556_pixel_t> >();

Expand All @@ -211,7 +211,7 @@ pixels and pixel iterators:
.. code-block:: cpp

// Mutable reference to a BGR232 pixel
typedef const bit_aligned_pixel_reference<unsigned char, mpl::vector3_c<unsigned,2,3,2>, bgr_layout_t, true> bgr232_ref_t;
typedef const bit_aligned_pixel_reference<unsigned char, mp11::mp_list_c<unsigned,2,3,2>, bgr_layout_t, true> bgr232_ref_t;

// A mutable iterator over BGR232 pixels
typedef bit_aligned_pixel_iterator<bgr232_ref_t> bgr232_ptr_t;
Expand Down Expand Up @@ -255,7 +255,7 @@ algorithms and metafunctions of color bases can work with them as well:
BOOST_MPL_ASSERT(num_channels<rgb8_pixel_t>::value == 3);
BOOST_MPL_ASSERT((is_same<channel_type<rgb8_pixel_t>::type, bits8>));
BOOST_MPL_ASSERT((is_same<color_space_type<bgr8_pixel_t>::type, rgb_t> ));
BOOST_MPL_ASSERT((is_same<channel_mapping_type<bgr8_pixel_t>::type, mpl::vector3_c<int,2,1,0> > ));
BOOST_MPL_ASSERT((is_same<channel_mapping_type<bgr8_pixel_t>::type, mp11::mp_list_c<int,2,1,0> > ));

// Pixels contain just the three channels and nothing extra
BOOST_MPL_ASSERT(sizeof(rgb8_pixel_t)==3);
Expand Down