update external headers

ios/include/common/NioUtils.h

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <cstdint>
+
+#include <jni.h>
+
+class AutoBuffer {
+public:
+    enum class BufferType : uint8_t {
+        BYTE,
+        CHAR,
+        SHORT,
+        INT,
+        LONG,
+        FLOAT,
+        DOUBLE
+    };
+
+    // Clients should pass "true" for the commit argument if they intend to mutate the buffer
+    // contents from native code.
+    AutoBuffer(JNIEnv* env, jobject buffer, jint size, bool commit = false) noexcept;
+    AutoBuffer(AutoBuffer&& rhs) noexcept;
+    ~AutoBuffer() noexcept;
+
+    void attachToJniThread(JNIEnv* env) noexcept {
+        mEnv = env;
+    }
+
+    void* getData() const noexcept {
+        return mUserData;
+    }
+
+    size_t getSize() const noexcept {
+        return mSize;
+    }
+
+    size_t getShift() const noexcept {
+        return mShift;
+    }
+
+    size_t countToByte(size_t count) const noexcept {
+        return count << mShift;
+    }
+
+private:
+    void* mUserData = nullptr;
+    size_t mSize = 0;
+    BufferType mType = BufferType::BYTE;
+    uint8_t mShift = 0;
+
+    JNIEnv* mEnv;
+    void* mData = nullptr;
+    jobject mBuffer = nullptr;
+    jarray mBaseArray = nullptr;
+    bool mDoCommit = false;
+
+    struct {
+        jclass jniClass;
+        jmethodID getBasePointer;
+        jmethodID getBaseArray;
+        jmethodID getBaseArrayOffset;
+        jmethodID getBufferType;
+    } mNioUtils{};
+};