OPCServer.h

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Library General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * OPCServer.h
 * The Open Pixel Server.
 * Copyright (C) 2014 Simon Newton
 */

#ifndef PLUGINS_OPENPIXELCONTROL_OPCSERVER_H_
#define PLUGINS_OPENPIXELCONTROL_OPCSERVER_H_

#include <string>
#include <map>
#include <memory>
#include "ola/Constants.h"
#include "ola/DmxBuffer.h"
#include "ola/io/SelectServerInterface.h"
#include "ola/network/SocketAddress.h"
#include "ola/network/TCPSocket.h"
#include "ola/network/TCPSocketFactory.h"
#include "plugins/openpixelcontrol/OPCConstants.h"

namespace ola {
namespace plugin {
namespace openpixelcontrol {

class OPCServer {
 public:
 typedef Callback3<void, uint8_t, const uint8_t*, unsigned int>
 ChannelCallback;

 OPCServer(ola::io::SelectServerInterface *ss,
 const ola::network::IPV4SocketAddress &listen_addr);

 ~OPCServer();

 bool Init();

 void SetCallback(uint8_t channel, ChannelCallback *callback);

 ola::network::IPV4SocketAddress ListenAddress() const;

 private:
 struct RxState {
 public:
 unsigned int offset;
 uint16_t expected_size;
 uint8_t *data;
 unsigned int buffer_size;

 RxState()
 : offset(0),
 expected_size(0) {
 buffer_size = OPC_FRAME_SIZE,
 data = new uint8_t[buffer_size];
 }

 ~RxState() {
 delete[] data;
 }

 void CheckSize();
 };

 typedef std::map<ola::network::TCPSocket*, RxState*> ClientMap;

 ola::io::SelectServerInterface* const m_ss;
 const ola::network::IPV4SocketAddress m_listen_addr;
 ola::network::TCPSocketFactory m_tcp_socket_factory;

 std::auto_ptr<ola::network::TCPAcceptingSocket> m_listening_socket;
 ClientMap m_clients;
 std::map<uint8_t, ChannelCallback*> m_callbacks;

 void NewTCPConnection(ola::network::TCPSocket *socket);
 void SocketReady(ola::network::TCPSocket *socket, RxState *rx_state);
 void SocketClosed(ola::network::TCPSocket *socket);

 DISALLOW_COPY_AND_ASSIGN(OPCServer);
};
} // namespace openpixelcontrol
} // namespace plugin
} // namespace ola
#endif // PLUGINS_OPENPIXELCONTROL_OPCSERVER_H_