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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_CRONET_ANDROID_IO_BUFFER_WITH_BYTE_BUFFER_H_
#define COMPONENTS_CRONET_ANDROID_IO_BUFFER_WITH_BYTE_BUFFER_H_
#include <jni.h>
#include "base/android/scoped_java_ref.h"
#include "net/base/io_buffer.h"
namespace cronet {
// net::WrappedIOBuffer subclass for a buffer owned by a Java ByteBuffer. Keeps
// the ByteBuffer alive until destroyed. Uses WrappedIOBuffer because data() is
// owned by the embedder.
class IOBufferWithByteBuffer : public net::WrappedIOBuffer {
public:
// Creates a buffer wrapping the Java ByteBuffer |jbyte_buffer|.
// |position| is the index of the first byte of data inside of the buffer.
// |limit| is the the index of the first element that should not be read or
// written, preserved to verify that buffer is not changed externally during
// networking operations.
IOBufferWithByteBuffer(JNIEnv* env,
const base::android::JavaRef<jobject>& jbyte_buffer,
jint position,
jint limit);
IOBufferWithByteBuffer(const IOBufferWithByteBuffer&) = delete;
IOBufferWithByteBuffer& operator=(const IOBufferWithByteBuffer&) = delete;
jint initial_position() const { return initial_position_; }
jint initial_limit() const { return initial_limit_; }
const base::android::JavaRef<jobject>& byte_buffer() const {
return byte_buffer_;
}
private:
~IOBufferWithByteBuffer() override;
base::android::ScopedJavaGlobalRef<jobject> byte_buffer_;
const jint initial_position_;
const jint initial_limit_;
};
// Represents a Java direct ByteBuffer backed by a net::IOBuffer. Keeps both the
// net::IOBuffer and the Java ByteBuffer object alive until destroyed.
class ByteBufferWithIOBuffer {
public:
ByteBufferWithIOBuffer(JNIEnv* env,
scoped_refptr<net::IOBuffer> io_buffer,
int io_buffer_len);
ByteBufferWithIOBuffer(const ByteBufferWithIOBuffer&) = delete;
ByteBufferWithIOBuffer& operator=(const ByteBufferWithIOBuffer&) = delete;
~ByteBufferWithIOBuffer();
const net::IOBuffer* io_buffer() const { return io_buffer_.get(); }
int io_buffer_len() const { return io_buffer_len_; }
const base::android::JavaRef<jobject>& byte_buffer() const {
return byte_buffer_;
}
private:
scoped_refptr<net::IOBuffer> io_buffer_;
int io_buffer_len_;
base::android::ScopedJavaGlobalRef<jobject> byte_buffer_;
};
} // namespace cronet
#endif // COMPONENTS_CRONET_ANDROID_IO_BUFFER_WITH_BYTE_BUFFER_H_
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