45 lines
1.6 KiB
C++
45 lines
1.6 KiB
C++
#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
|
|
|