74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
/**
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This file is a part of rexy's matrix client
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Copyright (C) 2019 rexy712
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program 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 Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MATRIX_IMAGE_THUMBNAIL_MAKER_HPP
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#define MATRIX_IMAGE_THUMBNAIL_MAKER_HPP
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#include <FreeImagePlus.h>
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#include <vector>
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#include <cstdlib> //size_t
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#include "matrix/upload_info.hpp"
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#define THUMBSIZE 500
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namespace matrix::internal{
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static std::vector<char> _create_image_thumbnail(fipImage& image, FREE_IMAGE_FORMAT type, size_t target_size){
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image.makeThumbnail(target_size);
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FreeImageIO fileout;
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std::vector<char> buffer;
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fileout.write_proc = [](void* ptr, unsigned int size, unsigned int nmemb, void* fp) -> unsigned int{
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std::vector<char>& buffer = *reinterpret_cast<std::vector<char>*>(fp);
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buffer.insert(buffer.end(), (char*)ptr, ((char*)ptr)+size*nmemb);
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return size*nmemb;
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};
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switch(type){
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case FIF_JPEG:
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return image.saveToHandle(type, &fileout, &buffer, JPEG_QUALITYGOOD | JPEG_SUBSAMPLING_411) ? buffer : std::vector<char>();
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case FIF_PNG:
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return image.saveToHandle(type, &fileout, &buffer, PNG_Z_BEST_COMPRESSION) ? buffer : std::vector<char>();
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default:
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return image.saveToHandle(type, &fileout, &buffer) ? buffer : std::vector<char>();
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};
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}
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static std::vector<char> _load_image_thumbnail_info(fipImage& image, image_info& info, FREE_IMAGE_FORMAT type){
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//create and upload thumbnail
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if(info.width > THUMB_SIZE || info.height > THUMB_SIZE){
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std::vector<char> thumb_data = _create_image_thumbnail(image, type, THUMB_SIZE);
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if(!thumb_data.size()){
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info.thumb_width = info.width;
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info.thumb_height = info.height;
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info.thumbsize = info.filesize;
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}else{
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info.thumb_width = image.getWidth();
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info.thumb_height = image.getHeight();
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info.thumbsize = thumb_data.size();
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return thumb_data;
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}
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}else{
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info.thumb_width = info.width;
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info.thumb_height = info.height;
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info.thumbsize = info.filesize;
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}
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return {};
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}
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}
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#endif
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