116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
/*
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* GDSII-Converter
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* Copyright (C) 2018 Mario Hüttel <mario.huettel@gmx.net>
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*
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* This file is part of GDSII-Converter.
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*
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* GDSII-Converter is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* GDSII-Converter is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file external-renderer.c
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* @brief This file implements the dynamic library loading for the external rendering feature
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* @author Mario Hüttel <mario.huettel@gmx.net>
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*/
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/**
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* @addtogroup ExternalRenderer
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* @{
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*/
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#include <dlfcn.h>
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#include <stdio.h>
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#include <gds-render/output-renderers/external-renderer.h>
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struct _ExternalRenderer {
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GdsOutputRenderer parent;
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const char *shared_object_path;
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};
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G_DEFINE_TYPE(ExternalRenderer, external_renderer, GDS_RENDER_TYPE_OUTPUT_RENDERER)
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/**
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* @brief Execute render function in shared object to render the supplied cell
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* @param toplevel_cell Cell to render
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* @param layer_info_list Layer information (Color etc.)
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* @param output_file Destination file
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* @param so_path Path to shared object
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* @return 0 if successful
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*/
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static int external_renderer_render_cell(struct gds_cell *toplevel_cell, GList *layer_info_list,
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const char *output_file, double scale, const char *so_path)
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{
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int (*so_render_func)(struct gds_cell *, GList *, const char *, double) = NULL;
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void *so_handle = NULL;
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char *error_msg;
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int ret = 0;
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/* Check parameter sanity */
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if (!output_file || !so_path || !toplevel_cell || !layer_info_list)
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return -3000;
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/* Load shared object */
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so_handle = dlopen(so_path, RTLD_LAZY);
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if (!so_handle) {
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g_error("Could not load external library '%s'\nDetailed error is:\n%s", so_path, dlerror());
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return -2000;
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}
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/* Load symbol from library */
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so_render_func = (int (*)(struct gds_cell *, GList *, const char *, double))dlsym(so_handle, EXTERNAL_LIBRARY_FUNCTION);
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error_msg = dlerror();
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if (error_msg != NULL) {
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g_error("Rendering function not found in library:\n%s\n", error_msg);
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goto ret_close_so_handle;
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}
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/* Execute */
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if (so_render_func)
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ret = so_render_func(toplevel_cell, layer_info_list, output_file, scale);
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ret_close_so_handle:
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dlclose(so_handle);
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return ret;
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}
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static int external_renderer_render_output(GdsOutputRenderer *renderer,
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struct gds_cell *cell,
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GList *layer_infos,
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const char *output_file,
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double scale)
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{
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ExternalRenderer *ext_renderer = GDS_RENDER_EXTERNAL_RENDERER(renderer);
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return external_renderer_render_cell(cell, layer_infos, output_file, scale, ext_renderer->shared_object_path);
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}
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static void external_renderer_class_init(ExternalRendererClass *klass)
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{
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GdsOutputRendererClass *inherited_parent_class;
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inherited_parent_class = GDS_RENDER_OUTPUT_RENDERER_CLASS(klass);
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/* Override virtual function */
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inherited_parent_class->render_output = external_renderer_render_output;
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}
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static void external_renderer_init(ExternalRenderer *self)
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{
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self->shared_object_path = NULL;
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}
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/** @} */
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