[android] use native image encoding and decoding

1 files changed, 22 insertions, 0 deletions

diff --git a/platform/android/src/image.cpp b/platform/android/src/image.cpp
new file mode 100644
index 0000000000..2a33944b18
--- /dev/null
+++ b/platform/android/src/image.cpp
@@ -0,0 +1,22 @@
+#include <mbgl/util/image.hpp>
+#include <mbgl/util/string.hpp>
+
+#include <string>
+
+#include "attach_env.hpp"
+#include "bitmap_factory.hpp"
+
+namespace mbgl {
+
+PremultipliedImage decodeImage(const std::string& string) {
+    auto env{ android::AttachEnv() };
+
+    auto array = jni::Array<jni::jbyte>::New(*env, string.size());
+    jni::SetArrayRegion(*env, *array, 0, string.size(),
+                        reinterpret_cast<const signed char*>(string.data()));
+
+    auto bitmap = android::BitmapFactory::DecodeByteArray(*env, array, 0, string.size());
+    return android::Bitmap::GetImage(*env, bitmap);
+}
+
+} // namespace mbgl