1 files changed, 44 insertions, 0 deletions
diff --git a/platform/android/src/map/image.cpp b/platform/android/src/map/image.cpp
new file mode 100644
index 0000000000..5f5c90eddd
--- /dev/null
+++ b/platform/android/src/map/image.cpp
@@ -0,0 +1,44 @@
+#include <mbgl/style/image.hpp>
+#include <mbgl/util/exception.hpp>
+#include "image.hpp"
+
+namespace mbgl {
+namespace android {
+
+mbgl::style::Image Image::getImage(jni::JNIEnv& env, jni::Object<Image> image) {
+    static auto widthField = Image::javaClass.GetField<jni::jint>(env, "width");
+    static auto heightField = Image::javaClass.GetField<jni::jint>(env, "height");
+    static auto pixelRatioField = Image::javaClass.GetField<jni::jfloat>(env, "pixelRatio");
+    static auto bufferField = Image::javaClass.GetField<jni::Array<jbyte>>(env, "buffer");
+    static auto nameField = Image::javaClass.GetField<jni::String>(env, "name");
+
+    auto height = image.Get(env, heightField);
+    auto width = image.Get(env, widthField);
+    auto pixelRatio = image.Get(env, pixelRatioField);
+    auto pixels = image.Get(env, bufferField);
+    auto name = jni::Make<std::string>(env, image.Get(env, nameField));
+
+    jni::NullCheck(env, &pixels);
+    std::size_t size = pixels.Length(env);
+
+    mbgl::PremultipliedImage premultipliedImage({ static_cast<uint32_t>(width), static_cast<uint32_t>(height) });
+    if (premultipliedImage.bytes() != uint32_t(size)) {
+        throw mbgl::util::SpriteImageException("Sprite image pixel count mismatch");
+    }
+
+    jni::GetArrayRegion(env, *pixels, 0, size, reinterpret_cast<jbyte*>(premultipliedImage.data.get()));
+
+    return mbgl::style::Image {name, std::move(premultipliedImage), pixelRatio};
+}
+
+void Image::registerNative(jni::JNIEnv &env) {
+    // Lookup the class
+    Image::javaClass = *jni::Class<Image>::Find(env).NewGlobalRef(env).release();
+}
+
+jni::Class<Image> Image::javaClass;
+
+
+} // namespace android
+} // namespace mb
+