diff --git a/include/mapnik/span_image_filter.hpp b/include/mapnik/span_image_filter.hpp deleted file mode 100644 index d99c21ac9..000000000 --- a/include/mapnik/span_image_filter.hpp +++ /dev/null @@ -1,158 +0,0 @@ -/***************************************************************************** - * - * This file is part of Mapnik (c++ mapping toolkit) - * - * Copyright (C) 2015 Artem Pavlenko - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * - *****************************************************************************/ - -#include -#include "agg_span_image_filter_rgba.h" - -namespace mapnik { - -using namespace agg; - -template -class span_image_resample_rgba_affine : - public span_image_resample_affine -{ -public: - using source_type = Source; - using color_type = typename source_type::color_type; - using order_type = typename source_type::order_type; - using base_type = span_image_resample_affine; - using interpolator_type = typename base_type::interpolator_type; - using value_type = typename color_type::value_type; - using long_type = typename color_type::long_type; - enum base_scale_e - { - base_shift = color_type::base_shift, - base_mask = color_type::base_mask, - downscale_shift = image_filter_shift - }; - - //-------------------------------------------------------------------- - span_image_resample_rgba_affine() {} - span_image_resample_rgba_affine(source_type& src, - interpolator_type& inter, - const image_filter_lut& filter) : - base_type(src, inter, filter) - {} - - - //-------------------------------------------------------------------- - void generate(color_type* span, int x, int y, unsigned len) - { - base_type::interpolator().begin(x + base_type::filter_dx_dbl(), - y + base_type::filter_dy_dbl(), len); - - long_type fg[4]; - - int diameter = base_type::filter().diameter(); - int filter_scale = diameter << image_subpixel_shift; - int radius_x = (diameter * base_type::m_rx) >> 1; - int radius_y = (diameter * base_type::m_ry) >> 1; - int len_x_lr = - (diameter * base_type::m_rx + image_subpixel_mask) >> - image_subpixel_shift; - - const std::int16_t* weight_array = base_type::filter().weight_array(); - - do - { - base_type::interpolator().coordinates(&x, &y); - - x += base_type::filter_dx_int() - radius_x; - y += base_type::filter_dy_int() - radius_y; - - fg[0] = fg[1] = fg[2] = fg[3] = image_filter_scale / 2; - - int y_lr = y >> image_subpixel_shift; - int y_hr = ((image_subpixel_mask - (y & image_subpixel_mask)) * - base_type::m_ry_inv) >> - image_subpixel_shift; - int total_weight = 0; - int x_lr = x >> image_subpixel_shift; - int x_hr = ((image_subpixel_mask - (x & image_subpixel_mask)) * - base_type::m_rx_inv) >> - image_subpixel_shift; - - int x_hr2 = x_hr; - const value_type* fg_ptr = - (const value_type*)base_type::source().span(x_lr, y_lr, len_x_lr); - for(;;) - { - int weight_y = weight_array[y_hr]; - x_hr = x_hr2; - for(;;) - { - int weight = (weight_y * weight_array[x_hr] + - image_filter_scale / 2) >> - downscale_shift; - - fg[0] += *fg_ptr++ * weight; - fg[1] += *fg_ptr++ * weight; - fg[2] += *fg_ptr++ * weight; - fg[3] += *fg_ptr * weight; - - total_weight += weight; - x_hr += base_type::m_rx_inv; - if(x_hr >= filter_scale) break; - fg_ptr = (const value_type*)base_type::source().next_x(); - } - y_hr += base_type::m_ry_inv; - if(y_hr >= filter_scale) break; - fg_ptr = (const value_type*)base_type::source().next_y(); - } - - if (total_weight) - { - fg[3] /= total_weight; - fg[0] /= total_weight; - fg[1] /= total_weight; - fg[2] /= total_weight; - - if(fg[0] < 0) fg[0] = 0; - if(fg[1] < 0) fg[1] = 0; - if(fg[2] < 0) fg[2] = 0; - if(fg[3] < 0) fg[3] = 0; - } - else - { - fg[0] = 0; - fg[1] = 0; - fg[2] = 0; - fg[3] = 0; - } - - if(fg[order_type::R] > base_mask) fg[order_type::R] = base_mask; - if(fg[order_type::G] > base_mask) fg[order_type::G] = base_mask; - if(fg[order_type::B] > base_mask) fg[order_type::B] = base_mask; - if(fg[order_type::A] > base_mask) fg[order_type::A] = base_mask; - - span->r = (value_type)fg[order_type::R]; - span->g = (value_type)fg[order_type::G]; - span->b = (value_type)fg[order_type::B]; - span->a = (value_type)fg[order_type::A]; - - ++span; - ++base_type::interpolator(); - } while(--len); - } -}; -}