42 lines
1.7 KiB
C++
42 lines
1.7 KiB
C++
#include <mbgl/style/image.hpp>
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#include <mbgl/util/exception.hpp>
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#include "image.hpp"
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namespace mbgl {
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namespace android {
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mbgl::style::Image Image::getImage(jni::JNIEnv& env, const jni::Object<Image>& image) {
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static auto& javaClass = jni::Class<Image>::Singleton(env);
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static auto widthField = javaClass.GetField<jni::jint>(env, "width");
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static auto heightField = javaClass.GetField<jni::jint>(env, "height");
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static auto pixelRatioField = javaClass.GetField<jni::jfloat>(env, "pixelRatio");
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static auto bufferField = javaClass.GetField<jni::Array<jbyte>>(env, "buffer");
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static auto nameField = javaClass.GetField<jni::String>(env, "name");
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static auto sdfField = javaClass.GetField<jni::jboolean>(env, "sdf");
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auto height = image.Get(env, heightField);
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auto width = image.Get(env, widthField);
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auto pixelRatio = image.Get(env, pixelRatioField);
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auto pixels = image.Get(env, bufferField);
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auto name = jni::Make<std::string>(env, image.Get(env, nameField));
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auto sdf = (bool) image.Get(env, sdfField);
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jni::NullCheck(env, pixels.get());
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std::size_t size = pixels.Length(env);
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mbgl::PremultipliedImage premultipliedImage({ static_cast<uint32_t>(width), static_cast<uint32_t>(height) });
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if (premultipliedImage.bytes() != uint32_t(size)) {
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throw mbgl::util::SpriteImageException("Sprite image pixel count mismatch");
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}
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jni::GetArrayRegion(env, *pixels, 0, size, reinterpret_cast<jbyte*>(premultipliedImage.data.get()));
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return mbgl::style::Image {name, std::move(premultipliedImage), pixelRatio, sdf};
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}
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void Image::registerNative(jni::JNIEnv &env) {
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jni::Class<Image>::Singleton(env);
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}
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} // namespace android
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} // namespace mb
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