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