94f011895c
Provide Image::copy, which handles copying rectangles from a source to a destination, with thorough bounds checking. Also fixes an indexing error in SpriteAtlas, where the top row of pixels in a wrapped image was copied from the wrong source row.
131 lines
4.9 KiB
C++
131 lines
4.9 KiB
C++
#include <mbgl/test/util.hpp>
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#include <mbgl/util/premultiply.hpp>
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#include <mbgl/util/image.hpp>
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#include <mbgl/util/io.hpp>
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using namespace mbgl;
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TEST(Image, PNGRoundTrip) {
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PremultipliedImage rgba({ 1, 1 });
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rgba.data[0] = 128;
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rgba.data[1] = 0;
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rgba.data[2] = 0;
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rgba.data[3] = 255;
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PremultipliedImage image = decodeImage(encodePNG(rgba));
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EXPECT_EQ(128, image.data[0]);
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EXPECT_EQ(0, image.data[1]);
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EXPECT_EQ(0, image.data[2]);
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EXPECT_EQ(255, image.data[3]);
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}
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TEST(Image, PNGRoundTripAlpha) {
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PremultipliedImage rgba({ 1, 1 });
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rgba.data[0] = 128;
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rgba.data[1] = 0;
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rgba.data[2] = 0;
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rgba.data[3] = 128;
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PremultipliedImage image = decodeImage(encodePNG(rgba));
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EXPECT_EQ(128, image.data[0]);
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EXPECT_EQ(0, image.data[1]);
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EXPECT_EQ(0, image.data[2]);
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EXPECT_EQ(128, image.data[3]);
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}
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TEST(Image, PNGReadNoProfile) {
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PremultipliedImage image = decodeImage(util::read_file("test/fixtures/image/no_profile.png"));
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EXPECT_EQ(128, image.data[0]);
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EXPECT_EQ(0, image.data[1]);
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EXPECT_EQ(0, image.data[2]);
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EXPECT_EQ(255, image.data[3]);
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}
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TEST(Image, PNGReadNoProfileAlpha) {
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PremultipliedImage image = decodeImage(util::read_file("test/fixtures/image/no_profile_alpha.png"));
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EXPECT_EQ(64, image.data[0]);
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EXPECT_EQ(0, image.data[1]);
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EXPECT_EQ(0, image.data[2]);
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EXPECT_EQ(128, image.data[3]);
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}
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TEST(Image, PNGReadProfile) {
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PremultipliedImage image = decodeImage(util::read_file("test/fixtures/image/profile.png"));
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EXPECT_EQ(128, image.data[0]);
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EXPECT_EQ(0, image.data[1]);
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EXPECT_EQ(0, image.data[2]);
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EXPECT_EQ(255, image.data[3]);
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}
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TEST(Image, PNGReadProfileAlpha) {
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PremultipliedImage image = decodeImage(util::read_file("test/fixtures/image/profile_alpha.png"));
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EXPECT_EQ(64, image.data[0]);
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EXPECT_EQ(0, image.data[1]);
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EXPECT_EQ(0, image.data[2]);
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EXPECT_EQ(128, image.data[3]);
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}
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TEST(Image, PNGTile) {
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PremultipliedImage image = decodeImage(util::read_file("test/fixtures/image/tile.png"));
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EXPECT_EQ(256u, image.size.width);
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EXPECT_EQ(256u, image.size.height);
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}
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TEST(Image, JPEGTile) {
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PremultipliedImage image = decodeImage(util::read_file("test/fixtures/image/tile.jpeg"));
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EXPECT_EQ(256u, image.size.width);
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EXPECT_EQ(256u, image.size.height);
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}
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#if !defined(__ANDROID__) && !defined(__APPLE__) && !defined(QT_IMAGE_DECODERS)
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TEST(Image, WebPTile) {
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PremultipliedImage image = decodeImage(util::read_file("test/fixtures/image/tile.webp"));
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EXPECT_EQ(256u, image.size.width);
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EXPECT_EQ(256u, image.size.height);
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}
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#endif // !defined(__ANDROID__) && !defined(__APPLE__) && !defined(QT_IMAGE_DECODERS)
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TEST(Image, Copy) {
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PremultipliedImage src5({5, 5});
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PremultipliedImage dst5({5, 5});
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PremultipliedImage src10({10, 10});
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PremultipliedImage dst10({10, 10});
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EXPECT_THROW(PremultipliedImage::copy(src5, dst10, {0, 0}, {0, 0}, {6, 0}), std::out_of_range);
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EXPECT_THROW(PremultipliedImage::copy(src5, dst10, {0, 0}, {0, 0}, {0, 6}), std::out_of_range);
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EXPECT_THROW(PremultipliedImage::copy(src5, dst10, {1, 1}, {0, 0}, {5, 0}), std::out_of_range);
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EXPECT_THROW(PremultipliedImage::copy(src5, dst10, {1, 1}, {0, 0}, {0, 5}), std::out_of_range);
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EXPECT_THROW(PremultipliedImage::copy(src10, dst5, {0, 0}, {0, 0}, {6, 0}), std::out_of_range);
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EXPECT_THROW(PremultipliedImage::copy(src10, dst5, {0, 0}, {0, 0}, {0, 6}), std::out_of_range);
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EXPECT_THROW(PremultipliedImage::copy(src10, dst5, {0, 0}, {1, 1}, {5, 0}), std::out_of_range);
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EXPECT_THROW(PremultipliedImage::copy(src10, dst5, {0, 0}, {1, 1}, {0, 5}), std::out_of_range);
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const uint32_t max = std::numeric_limits<uint32_t>::max();
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EXPECT_THROW(PremultipliedImage::copy(src10, dst10, {max, 0}, {0, 0}, {1, 0}), std::out_of_range);
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EXPECT_THROW(PremultipliedImage::copy(src10, dst10, {0, max}, {0, 0}, {0, 1}), std::out_of_range);
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EXPECT_THROW(PremultipliedImage::copy(src10, dst10, {0, 0}, {max, 0}, {1, 0}), std::out_of_range);
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EXPECT_THROW(PremultipliedImage::copy(src10, dst10, {0, 0}, {0, max}, {0, 1}), std::out_of_range);
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EXPECT_THROW(PremultipliedImage::copy(src10, dst10, {1, 0}, {0, 0}, {max, 0}), std::out_of_range);
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EXPECT_THROW(PremultipliedImage::copy(src10, dst10, {0, 1}, {0, 0}, {0, max}), std::out_of_range);
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EXPECT_THROW(PremultipliedImage::copy(src10, dst10, {0, 0}, {1, 0}, {max, 0}), std::out_of_range);
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EXPECT_THROW(PremultipliedImage::copy(src10, dst10, {0, 0}, {0, 1}, {0, max}), std::out_of_range);
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}
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TEST(Image, Premultiply) {
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UnassociatedImage rgba({ 1, 1 });
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rgba.data[0] = 255;
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rgba.data[1] = 254;
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rgba.data[2] = 253;
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rgba.data[3] = 128;
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PremultipliedImage image = util::premultiply(std::move(rgba));
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EXPECT_EQ(128, image.data[0]);
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EXPECT_EQ(127, image.data[1]);
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EXPECT_EQ(127, image.data[2]);
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EXPECT_EQ(128, image.data[3]);
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}
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