e7c3d04309
format all files Revert "format all files" This reverts commit 95d5812e49e7f916b68e786596f5a8eb5bcac414. Revert "format some files" This reverts commit ed3c8762d4d828b2b28e7b18809fc33f4f8ccaf5. format all files fix formatting in dir include fix formatting of debug macro
145 lines
5.3 KiB
C++
145 lines
5.3 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2021 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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// mapnik
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#if defined(HAVE_JPEG)
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#include <mapnik/jpeg_io.hpp>
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#endif
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#include <mapnik/image_util.hpp>
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#include <mapnik/image_util_jpeg.hpp>
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#include <mapnik/image.hpp>
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#include <mapnik/image_view.hpp>
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#include <mapnik/image_options.hpp>
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#include <mapnik/util/conversions.hpp>
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// stl
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#include <string>
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namespace mapnik {
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jpeg_saver::jpeg_saver(std::ostream& stream, std::string const& t)
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: stream_(stream)
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, t_(t)
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{}
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namespace detail {
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int parse_jpeg_quality(std::string const& params)
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{
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int quality = 85;
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if (params != "jpeg")
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{
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for (auto const& kv : parse_image_options(params))
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{
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auto const& key = kv.first;
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auto const& val = kv.second;
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if (key == "jpeg")
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continue;
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else if (key.size() > 4 && key.substr(0, 4) == "jpeg")
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{
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if (!mapnik::util::string2int(key.substr(4), quality))
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{
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throw image_writer_exception("invalid jpeg quality: '" + key.substr(4) + "'");
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}
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}
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else if (key == "quality")
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{
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if (val && !(*val).empty())
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{
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if (!mapnik::util::string2int(*val, quality) || quality < 0 || quality > 100)
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{
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throw image_writer_exception("invalid jpeg quality: '" + *val + "'");
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}
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}
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}
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}
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}
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return quality;
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}
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} // namespace detail
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template<typename T>
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void process_rgba8_jpeg(T const& image, std::string const& type, std::ostream& stream)
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{
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#if defined(HAVE_JPEG)
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int quality = detail::parse_jpeg_quality(type);
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save_as_jpeg(stream, quality, image);
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#else
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throw image_writer_exception("jpeg output is not enabled in your build of Mapnik");
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#endif
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}
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template<>
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void jpeg_saver::operator()<image_rgba8>(image_rgba8 const& image) const
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{
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process_rgba8_jpeg(image, t_, stream_);
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}
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template<>
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void jpeg_saver::operator()<image_view_rgba8>(image_view_rgba8 const& image) const
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{
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process_rgba8_jpeg(image, t_, stream_);
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}
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template<>
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void jpeg_saver::operator()<image_null>(image_null const& image) const
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{
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throw image_writer_exception("Can not save a null image to jpeg");
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}
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template<>
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void jpeg_saver::operator()<image_view_null>(image_view_null const& image) const
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{
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throw image_writer_exception("Can not save a null image to jpeg");
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}
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template<typename T>
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void jpeg_saver::operator()(T const& image) const
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{
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throw image_writer_exception("Mapnik does not support jpeg grayscale images");
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}
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template void jpeg_saver::operator()<image_gray8>(image_gray8 const& image) const;
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template void jpeg_saver::operator()<image_gray8s>(image_gray8s const& image) const;
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template void jpeg_saver::operator()<image_gray16>(image_gray16 const& image) const;
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template void jpeg_saver::operator()<image_gray16s>(image_gray16s const& image) const;
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template void jpeg_saver::operator()<image_gray32>(image_gray32 const& image) const;
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template void jpeg_saver::operator()<image_gray32s>(image_gray32s const& image) const;
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template void jpeg_saver::operator()<image_gray32f>(image_gray32f const& image) const;
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template void jpeg_saver::operator()<image_gray64>(image_gray64 const& image) const;
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template void jpeg_saver::operator()<image_gray64s>(image_gray64s const& image) const;
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template void jpeg_saver::operator()<image_gray64f>(image_gray64f const& image) const;
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template void jpeg_saver::operator()<image_view_gray8>(image_view_gray8 const& image) const;
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template void jpeg_saver::operator()<image_view_gray8s>(image_view_gray8s const& image) const;
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template void jpeg_saver::operator()<image_view_gray16>(image_view_gray16 const& image) const;
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template void jpeg_saver::operator()<image_view_gray16s>(image_view_gray16s const& image) const;
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template void jpeg_saver::operator()<image_view_gray32>(image_view_gray32 const& image) const;
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template void jpeg_saver::operator()<image_view_gray32s>(image_view_gray32s const& image) const;
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template void jpeg_saver::operator()<image_view_gray32f>(image_view_gray32f const& image) const;
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template void jpeg_saver::operator()<image_view_gray64>(image_view_gray64 const& image) const;
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template void jpeg_saver::operator()<image_view_gray64s>(image_view_gray64s const& image) const;
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template void jpeg_saver::operator()<image_view_gray64f>(image_view_gray64f const& image) const;
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} // namespace mapnik
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