236 lines
8.3 KiB
C++
236 lines
8.3 KiB
C++
#include "catch.hpp"
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#include <cstring>
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#include <mapnik/color.hpp>
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#include <mapnik/image.hpp>
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#include <mapnik/image_reader.hpp>
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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/util/fs.hpp>
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#if defined(HAVE_CAIRO)
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#include <mapnik/cairo/cairo_context.hpp>
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#include <mapnik/cairo/cairo_image_util.hpp>
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#endif
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#pragma GCC diagnostic push
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#include <mapnik/warning_ignore.hpp>
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#include <boost/format.hpp>
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#include <boost/filesystem/convenience.hpp>
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#pragma GCC diagnostic pop
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inline void make_directory(std::string const& dir) {
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boost::filesystem::create_directories(dir);
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}
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namespace {
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template <typename T>
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void check_tiny_png_image_quantising(T const& im)
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{
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std::ostringstream ss(std::ios::binary);
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mapnik::save_to_stream(im, ss, "png8");
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ss.flush();
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std::string str = ss.str();
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std::unique_ptr<mapnik::image_reader> reader(mapnik::get_image_reader(str.data(), str.size()));
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auto w = reader->width();
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auto h = reader->height();
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CHECK(w > 0);
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CHECK(h > 0);
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auto im2 = mapnik::util::get<mapnik::image_rgba8>(reader->read(0, 0, w, h));
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for (std::size_t i = 0; i < w; ++i)
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{
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for (std::size_t j = 0; j < h; ++j)
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{
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REQUIRE(im2(i,j) == im(i,j));
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}
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}
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}
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}
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TEST_CASE("image io") {
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SECTION("readers") {
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std::string should_throw;
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boost::optional<std::string> type;
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try
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{
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mapnik::image_rgba8 im_og;
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auto im_size = mapnik::image_rgba8::pixel_size * im_og.width() * im_og.height();
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mapnik::detail::buffer buf(im_og.bytes(), im_size);
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mapnik::image_rgba8 im2(im_og.width(), im_og.height(), buf.data());
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CHECK( im2.bytes() == im_og.bytes() );
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#if defined(HAVE_JPEG)
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should_throw = "./test/data/images/blank.jpg";
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REQUIRE( mapnik::util::exists( should_throw ) );
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type = mapnik::type_from_filename(should_throw);
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REQUIRE( type );
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REQUIRE_THROWS(std::unique_ptr<mapnik::image_reader> reader(mapnik::get_image_reader(should_throw,*type)));
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// actually a png so jpeg reader should throw
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should_throw = "./test/data/images/landusepattern.jpg";
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REQUIRE( mapnik::util::exists( should_throw ) );
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type = mapnik::type_from_filename(should_throw);
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REQUIRE( type );
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try
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{
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std::unique_ptr<mapnik::image_reader> reader(mapnik::get_image_reader(should_throw,*type));
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REQUIRE(false);
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}
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catch (std::exception const& ex)
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{
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REQUIRE( std::string(ex.what()) == std::string("JPEG Reader: libjpeg could not read image: Not a JPEG file: starts with 0x89 0x50") );
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}
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#endif
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REQUIRE_THROWS(mapnik::image_rgba8 im(-10,-10)); // should throw rather than overflow
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#if defined(HAVE_CAIRO)
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mapnik::cairo_surface_ptr image_surface(
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cairo_image_surface_create(CAIRO_FORMAT_ARGB32,256,257),
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mapnik::cairo_surface_closer());
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mapnik::image_rgba8 im_data(cairo_image_surface_get_width(&*image_surface), cairo_image_surface_get_height(&*image_surface));
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im_data.set(1);
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REQUIRE( (unsigned)im_data(0,0) == unsigned(1) );
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// Should set back to fully transparent
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mapnik::cairo_image_to_rgba8(im_data, image_surface);
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REQUIRE( (unsigned)im_data(0,0) == unsigned(0) );
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#endif
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#if defined(HAVE_PNG)
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should_throw = "./test/data/images/blank.png";
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REQUIRE( mapnik::util::exists( should_throw ) );
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type = mapnik::type_from_filename(should_throw);
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REQUIRE( type );
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REQUIRE_THROWS(std::unique_ptr<mapnik::image_reader> reader(mapnik::get_image_reader(should_throw,*type)));
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should_throw = "./test/data/images/xcode-CgBI.png";
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REQUIRE( mapnik::util::exists( should_throw ) );
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type = mapnik::type_from_filename(should_throw);
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REQUIRE( type );
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REQUIRE_THROWS(std::unique_ptr<mapnik::image_reader> reader(mapnik::get_image_reader(should_throw,*type)));
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#endif
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#if defined(HAVE_TIFF)
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should_throw = "./test/data/images/blank.tiff";
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REQUIRE( mapnik::util::exists( should_throw ) );
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type = mapnik::type_from_filename(should_throw);
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REQUIRE( type );
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REQUIRE_THROWS(std::unique_ptr<mapnik::image_reader> reader(mapnik::get_image_reader(should_throw,*type)));
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#endif
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#if defined(HAVE_WEBP)
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should_throw = "./test/data/images/blank.webp";
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REQUIRE( mapnik::util::exists( should_throw ) );
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type = mapnik::type_from_filename(should_throw);
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REQUIRE( type );
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REQUIRE_THROWS(std::unique_ptr<mapnik::image_reader> reader(mapnik::get_image_reader(should_throw,*type)));
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#endif
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}
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catch (std::exception const & ex)
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{
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std::clog << ex.what() << "\n";
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REQUIRE(false);
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}
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} // END SECTION
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SECTION("writers options")
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{
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#if defined(HAVE_JPEG)
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// test we can parse both jpegXX and quality=XX options
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REQUIRE_THROWS(mapnik::detail::parse_jpeg_quality("jpegXX"));
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REQUIRE_THROWS(mapnik::detail::parse_jpeg_quality("jpeg:quality=XX"));
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int q0 = mapnik::detail::parse_jpeg_quality("jpeg50");
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int q1 = mapnik::detail::parse_jpeg_quality("jpeg:quality=50");
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REQUIRE(q0 == q1);
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#endif
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} // END SECTION
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SECTION("image_util : save_to_file/save_to_stream/save_to_string")
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{
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mapnik::image_rgba8 im(256,256);
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std::string named_color = "lightblue";
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mapnik::fill(im, mapnik::color(named_color).rgba());
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////////////////////////////////////////////////////
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std::vector<std::tuple<std::string, std::string> > supported_types;
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#if defined(HAVE_PNG)
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supported_types.push_back(std::make_tuple("png","png"));
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supported_types.push_back(std::make_tuple("png","png24"));
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supported_types.push_back(std::make_tuple("png","png32"));
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supported_types.push_back(std::make_tuple("png","png8"));
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supported_types.push_back(std::make_tuple("png","png256"));
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#endif
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#if defined(HAVE_JPEG)
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supported_types.push_back(std::make_tuple("jpeg","jpeg"));
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supported_types.push_back(std::make_tuple("jpeg","jpeg80"));
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supported_types.push_back(std::make_tuple("jpeg","jpeg90"));
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#endif
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#if defined(HAVE_TIFF)
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supported_types.push_back(std::make_tuple("tiff","tiff"));
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#endif
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#if defined(HAVE_WEBP)
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supported_types.push_back(std::make_tuple("webp","webp"));
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#endif
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std::string directory_name("/tmp/mapnik-tests/");
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make_directory(directory_name);
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REQUIRE(mapnik::util::exists(directory_name));
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for (auto const& info : supported_types)
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{
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std::string extension;
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std::string format;
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std::tie(extension, format) = info;
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std::string filename = (boost::format(directory_name + "mapnik-%1%.%2%") % named_color % extension).str();
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mapnik::save_to_file(im, filename);
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std::string str = mapnik::save_to_string(im, format);
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std::ostringstream ss;
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mapnik::save_to_stream(im, ss, format);
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CHECK(str.length() == ss.str().length());
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// wrap reader in scope to ensure the file handle is
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// released before we try to remove the file
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{
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std::unique_ptr<mapnik::image_reader> reader(mapnik::get_image_reader(filename, extension));
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unsigned w = reader->width();
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unsigned h = reader->height();
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auto im2 = reader->read(0, 0, w, h);
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CHECK(im2.size() == im.size());
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if (extension == "png" || extension == "tiff")
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{
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CHECK(0 == std::memcmp(im2.bytes(), im.bytes(), im.width() * im.height()));
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}
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}
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if (mapnik::util::exists(filename))
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{
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mapnik::util::remove(filename);
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}
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}
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}
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SECTION("Quantising small (less than 3 pixel images preserve original colours")
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{
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#if defined(HAVE_PNG)
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{ // 1x1
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mapnik::image_rgba8 im(1,1); // 1 pixel
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im(0,0) = mapnik::color("green").rgba();
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check_tiny_png_image_quantising(im);
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}
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{ // 1x2
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mapnik::image_rgba8 im(1,2); // 2 pixels
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mapnik::fill(im, mapnik::color("red").rgba());
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im(0,0) = mapnik::color("green").rgba();
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check_tiny_png_image_quantising(im);
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}
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{ // 2x1
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mapnik::image_rgba8 im(2,1); // 2 pixels
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mapnik::fill(im, mapnik::color("red").rgba());
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im(0,0) = mapnik::color("green").rgba();
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check_tiny_png_image_quantising(im);
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}
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#endif
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} // END SECTION
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} // END TEST_CASE
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