ShowNetNode.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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 * ShowNetNode.h
 * Header file for the ShowNetNode class
 * Copyright (C) 2005-2009 Simon Newton
 */

#ifndef PLUGINS_SHOWNET_SHOWNETNODE_H_
#define PLUGINS_SHOWNET_SHOWNETNODE_H_

#include <string>
#include <map>
#include "ola/Callback.h"
#include "ola/DmxBuffer.h"
#include "ola/dmx/RunLengthEncoder.h"
#include "ola/network/InterfacePicker.h"
#include "ola/network/Socket.h"
#include "plugins/shownet/ShowNetPackets.h"

namespace ola {
namespace plugin {
namespace shownet {

class ShowNetNode {
 public:
 explicit ShowNetNode(const std::string &ip_address);
 virtual ~ShowNetNode();

 bool Start();
 bool Stop();
 void SetName(const std::string &name);

 bool SendDMX(unsigned int universe, const ola::DmxBuffer &buffer);
 bool SetHandler(unsigned int universe,
 DmxBuffer *buffer,
 ola::Callback0<void> *handler);
 bool RemoveHandler(unsigned int universe);

 const ola::network::Interface &GetInterface() const {
 return m_interface;
 }

 ola::network::UDPSocket* GetSocket() { return m_socket; }
 void SocketReady();

 static const uint16_t SHOWNET_MAX_UNIVERSES = 8;

 friend class ShowNetNodeTest;

 private:
 typedef struct {
 DmxBuffer *buffer;
 Callback0<void> *closure;
 } universe_handler;

 bool m_running;
 uint16_t m_packet_count;
 std::string m_node_name;
 std::string m_preferred_ip;
 std::map<unsigned int, universe_handler> m_handlers;
 ola::network::Interface m_interface;
 ola::dmx::RunLengthEncoder m_encoder;
 ola::network::UDPSocket *m_socket;

 ShowNetNode(const ShowNetNode&);
 ShowNetNode& operator=(const ShowNetNode&);
 bool HandlePacket(const shownet_data_packet &packet, unsigned int size);
 unsigned int PopulatePacket(shownet_data_packet *packet,
 unsigned int universe,
 const DmxBuffer &buffer);
 bool InitNetwork();
 inline uint8_t ShortGetHigh(uint16_t x) const { return (0xff00 & x) >> 8; }
 inline uint8_t ShortGetLow(uint16_t x) const { return 0x00ff & x; }

 static const uint16_t SHOWNET_PORT = 2501;
 static const uint8_t SHOWNET_ID_HIGH = 0x80;
 static const uint8_t SHOWNET_ID_LOW = 0x8f;
 static const int MAGIC_INDEX_OFFSET = 11;
};
} // namespace shownet
} // namespace plugin
} // namespace ola
#endif // PLUGINS_SHOWNET_SHOWNETNODE_H_