feat: Add SharedArray.getSize() (#2406)

* feat: Add `SharedArray.getSize()`

* Rename `count` to `size` on iOS

* `->` instead of `.`

package/android/src/main/cpp/frameprocessor/java-bindings/JSharedArray.cpp

@@ -28,6 +28,7 @@ jni::global_ref<jni::JByteBuffer> JSharedArray::wrapInByteBuffer(jsi::Runtime& r
 JSharedArray::JSharedArray(jsi::Runtime& runtime, std::shared_ptr<TypedArrayBase> array) {
   _array = array;
   _byteBuffer = wrapInByteBuffer(runtime, _array);
+  _size = _array->size(runtime);
 }
 
 JSharedArray::JSharedArray(const jni::alias_ref<JSharedArray::jhybridobject>& javaThis,
@@ -43,12 +44,14 @@ JSharedArray::JSharedArray(const jni::alias_ref<JSharedArray::jhybridobject>& ja
   __android_log_print(ANDROID_LOG_INFO, TAG, "Allocating ArrayBuffer with size %i and type %i...", size, dataType);
   _array = std::make_shared<TypedArrayBase>(runtime, size, kind);
   _byteBuffer = wrapInByteBuffer(runtime, _array);
+  _size = size;
 }
 
 void JSharedArray::registerNatives() {
   registerHybrid({
       makeNativeMethod("initHybrid", JSharedArray::initHybrid),
       makeNativeMethod("getByteBuffer", JSharedArray::getByteBuffer),
+      makeNativeMethod("getSize", JSharedArray::getSize),
   });
 }
 
@@ -56,6 +59,10 @@ jni::local_ref<jni::JByteBuffer> JSharedArray::getByteBuffer() {
   return jni::make_local(_byteBuffer);
 }
 
+jint JSharedArray::getSize() {
+  return _size;
+}
+
 std::shared_ptr<TypedArrayBase> JSharedArray::getTypedArray() {
   return _array;
 }

package/android/src/main/cpp/frameprocessor/java-bindings/JSharedArray.h

@@ -23,6 +23,7 @@ public:
   static jni::local_ref<JSharedArray::javaobject> create(jsi::Runtime& runtime, TypedArrayBase array);
 
 public:
+  jint getSize();
   jni::local_ref<jni::JByteBuffer> getByteBuffer();
   std::shared_ptr<TypedArrayBase> getTypedArray();
 
@@ -35,6 +36,7 @@ private:
   jni::global_ref<javaobject> _javaPart;
   jni::global_ref<jni::JByteBuffer> _byteBuffer;
   std::shared_ptr<TypedArrayBase> _array;
+  int _size;
 
 private:
   explicit JSharedArray(jsi::Runtime& runtime, std::shared_ptr<TypedArrayBase> array);

package/android/src/main/java/com/mrousavy/camera/frameprocessor/SharedArray.java

@@ -39,6 +39,11 @@ public final class SharedArray {
      */
     public native ByteBuffer getByteBuffer();
 
+    /**
+     * Gets the size of the ByteBuffer.
+     */
+    public native int getSize();
+
     private native HybridData initHybrid(VisionCameraProxy proxy, int dataType, int size);
 
     /**