91 lines
3.2 KiB
C++
91 lines
3.2 KiB
C++
/*
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* Copyright (C) 2015 Emeric Poupon
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*
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* This file is part of LMS.
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*
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* LMS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU 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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*
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* LMS 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 LMS. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "image/Image.hpp"
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#include <memory>
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#include "core/ILogger.hpp"
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#include "core/ITraceLogger.hpp"
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#include "image/Exception.hpp"
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#include "EncodedImage.hpp"
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#include "RawImage.hpp"
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namespace lms::image
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{
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void init(const std::filesystem::path& path)
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{
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Magick::InitializeMagick(path.string().c_str());
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if (auto nbThreads{ MagickLib::GetMagickResourceLimit(MagickLib::ThreadsResource) }; nbThreads != 1)
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LMS_LOG(COVER, WARNING, "Consider setting env var OMP_NUM_THREADS=1 to save resources");
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if (!MagickLib::SetMagickResourceLimit(MagickLib::ThreadsResource, 1))
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LMS_LOG(COVER, ERROR, "Cannot set Magick thread resource limit to 1!");
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if (!MagickLib::SetMagickResourceLimit(MagickLib::DiskResource, 0))
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LMS_LOG(COVER, ERROR, "Cannot set Magick disk resource limit to 0!");
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LMS_LOG(COVER, INFO, "Magick threads resource limit = " << GetMagickResourceLimit(MagickLib::ThreadsResource));
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LMS_LOG(COVER, INFO, "Magick Disk resource limit = " << GetMagickResourceLimit(MagickLib::DiskResource));
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}
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std::span<const std::filesystem::path> getSupportedFileExtensions()
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{
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static const std::array<std::filesystem::path, 4> fileExtensions{ ".jpg", ".jpeg", ".png", ".bmp" };
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return fileExtensions;
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}
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std::unique_ptr<IRawImage> decodeImage(std::span<const std::byte> encodedData)
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{
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LMS_SCOPED_TRACE_DETAILED("Image", "DecodeBuffer");
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return std::make_unique<GraphicsMagick::RawImage>(encodedData);
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}
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std::unique_ptr<IRawImage> decodeImage(const std::filesystem::path& path)
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{
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LMS_SCOPED_TRACE_DETAILED("Image", "DecodeFile");
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return std::make_unique<GraphicsMagick::RawImage>(path);
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}
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std::unique_ptr<IEncodedImage> encodeToJPEG(const IRawImage& rawImage, unsigned quality)
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{
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LMS_SCOPED_TRACE_DETAILED("Image", "WriteJPEG");
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try
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{
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Magick::Image image{ static_cast<const GraphicsMagick::RawImage&>(rawImage).getMagickImage() };
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image.magick("JPEG");
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image.quality(quality);
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Magick::Blob blob;
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image.write(&blob);
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return std::make_unique<EncodedImage>(std::span{ static_cast<const std::byte*>(blob.data()), blob.length() }, "image/jpeg");
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}
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catch (Magick::Exception& e)
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{
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LMS_LOG(COVER, ERROR, "Caught Magick exception: " << e.what());
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throw Exception{ std::string{ "Magick read error: " } + e.what() };
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}
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}
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} // namespace lms::image
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