virtualx-engine/core/io/packet_peer.h

/*************************************************************************/
/*  packet_peer.h                                                        */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
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/* The above copyright notice and this permission notice shall be        */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
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/*************************************************************************/
#ifndef PACKET_PEER_H
#define PACKET_PEER_H

#include "object.h"
#include "io/stream_peer.h"
#include "ring_buffer.h"
class PacketPeer : public Reference {

	GDCLASS( PacketPeer, Reference );

	Variant _bnd_get_var() const;
	void _bnd_put_var(const Variant& p_var);

	static void _bind_methods();


	Error _put_packet(const DVector<uint8_t> &p_buffer);
	DVector<uint8_t> _get_packet() const;
	Error _get_packet_error() const;


	mutable Error last_get_error;

public:

	virtual int get_available_packet_count() const=0;
	virtual Error get_packet(const uint8_t **r_buffer,int &r_buffer_size) const=0; ///< buffer is GONE after next get_packet
	virtual Error put_packet(const uint8_t *p_buffer,int p_buffer_size)=0;

	virtual int get_max_packet_size() const=0;

	/* helpers / binders */

	virtual Error get_packet_buffer(DVector<uint8_t> &r_buffer) const;
	virtual Error put_packet_buffer(const DVector<uint8_t> &p_buffer);

	virtual Error get_var(Variant &r_variant) const;
	virtual Error put_var(const Variant& p_packet);

	PacketPeer();
	~PacketPeer(){}
};

class PacketPeerStream : public PacketPeer {

	GDCLASS(PacketPeerStream,PacketPeer);

	//the way the buffers work sucks, will change later

	mutable Ref<StreamPeer> peer;
	mutable RingBuffer<uint8_t> ring_buffer;
	mutable Vector<uint8_t> temp_buffer;

	Error _poll_buffer() const;
protected:

	void _set_stream_peer(REF p_peer);
	static void _bind_methods();
public:

	virtual int get_available_packet_count() const;
	virtual Error get_packet(const uint8_t **r_buffer,int &r_buffer_size) const;
	virtual Error put_packet(const uint8_t *p_buffer,int p_buffer_size);

	virtual int get_max_packet_size() const;

	void set_stream_peer(const Ref<StreamPeer>&  p_peer);
	void set_input_buffer_max_size(int p_max_size);
	PacketPeerStream();

};


#endif // PACKET_STREAM_H