210 lines
4.9 KiB
C++
210 lines
4.9 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2011-2015 Danny Robson <danny@nerdcruft.net>
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*/
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#include "image.hpp"
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#include "debug.hpp"
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using util::image::buffer;
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//-----------------------------------------------------------------------------
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template <size_t C, typename T>
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buffer<C,T>::buffer (util::extentu<2> _size):
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m_size (_size),
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m_stride (C, C * _size.w),
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m_data (std::make_unique<T[]> (_size.area () * C))
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{ ; }
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//-----------------------------------------------------------------------------
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template <size_t C, typename T>
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template <typename U>
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buffer<C,U>
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buffer<C,T>::alloc (void) const
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{
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return buffer<C,U> (m_size);
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}
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//-----------------------------------------------------------------------------
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template <typename T, typename U>
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static U
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rescale (T v)
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{
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return v * sizeof (U) / sizeof (T);
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}
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//-----------------------------------------------------------------------------
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template <size_t C, typename T>
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template <typename U>
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util::image::buffer<C,U>
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util::image::buffer<C,T>::clone (void) const
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{
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auto out = alloc<U> ();
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auto func = renormalise<T,U>;
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std::transform (begin (), end (), out.begin (), func);
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return out;
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}
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///////////////////////////////////////////////////////////////////////////////
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template <size_t C, typename T>
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const T&
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buffer<C,T>::operator[] (point<2,size_t> p) const
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{
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CHECK (util::all (p < extent ()));
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return begin ()[offset (p)];
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}
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//-----------------------------------------------------------------------------
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template <size_t C, typename T>
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T&
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buffer<C,T>::operator[] (point<2,size_t> p)
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{
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CHECK (util::all (p < extent ()));
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return begin ()[offset (p)];
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}
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//-----------------------------------------------------------------------------
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template <size_t C, typename T>
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const T&
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buffer<C,T>::operator[] (size_t idx) const
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{
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CHECK_LT (idx, size ());
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return begin ()[idx];
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}
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//-----------------------------------------------------------------------------
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template <size_t C, typename T>
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T&
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buffer<C,T>::operator[] (size_t idx)
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{
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CHECK_LT (idx, size ());
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return begin ()[idx];
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}
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///////////////////////////////////////////////////////////////////////////////
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template <size_t C, typename T>
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T*
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buffer<C,T>::data (void)
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{
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return begin ();
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}
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//-----------------------------------------------------------------------------
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template <size_t C, typename T>
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T*
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buffer<C,T>::begin (void)
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{
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return m_data.get ();
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}
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//-----------------------------------------------------------------------------
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template <size_t C, typename T>
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T*
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buffer<C,T>::end (void)
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{
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return begin () + m_size.back () * m_stride.back ();
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}
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//-----------------------------------------------------------------------------
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template <size_t C, typename T>
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const T*
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buffer<C,T>::begin (void) const
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{
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return cbegin ();
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}
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//-----------------------------------------------------------------------------
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template <size_t C, typename T>
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const T*
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buffer<C,T>::end (void) const
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{
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return cend ();
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}
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//-----------------------------------------------------------------------------
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template <size_t C, typename T>
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const T*
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buffer<C,T>::data (void) const
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{
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return begin ();
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}
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//-----------------------------------------------------------------------------
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template <size_t C, typename T>
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const T*
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buffer<C,T>::cbegin (void) const
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{
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return m_data.get ();
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}
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//-----------------------------------------------------------------------------
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template <size_t C, typename T>
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const T*
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buffer<C,T>::cend (void) const
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{
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return cbegin () + m_size.back () * m_stride.back ();
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}
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///////////////////////////////////////////////////////////////////////////////
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#define INSTANTIATE_C_T_U(C,T,U) \
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template util::image::buffer<C,U> util::image::buffer<C,T>::alloc (void) const; \
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template util::image::buffer<C,U> util::image::buffer<C,T>::clone (void) const; \
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template util::image::buffer<C,U> util::image::buffer<C,T>::cast (void) const;
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#define INSTANTIATE_C_T(C,T) \
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template struct util::image::buffer<C,T>; \
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INSTANTIATE_C_T_U(C,T,uint8_t) \
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INSTANTIATE_C_T_U(C,T,uint16_t) \
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INSTANTIATE_C_T_U(C,T,uint32_t) \
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INSTANTIATE_C_T_U(C,T,float) \
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INSTANTIATE_C_T_U(C,T,double)
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#define INSTANTIATE_C(C) \
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INSTANTIATE_C_T(C,uint8_t) \
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INSTANTIATE_C_T(C,uint16_t) \
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INSTANTIATE_C_T(C,uint32_t) \
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INSTANTIATE_C_T(C,float) \
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INSTANTIATE_C_T(C,double)
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INSTANTIATE_C(1)
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INSTANTIATE_C(2)
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INSTANTIATE_C(3)
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INSTANTIATE_C(4)
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