jack2/common/JackNetManager.h

/*
Copyright (C) 2008-2011 Romain Moret at Grame

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 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., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef __JACKNETMANAGER_H__
#define __JACKNETMANAGER_H__

#include "JackNetInterface.h"
#include "thread.h"
#include "jack.h"
#include "jslist.h"
#include <list>

namespace Jack
{
    class JackNetMasterManager;

    /**
    \Brief This class describes a Net Master
    */

    class JackNetMaster : public JackNetMasterInterface
    {
            friend class JackNetMasterManager;

        private:
      
            static int SetProcess(jack_nframes_t nframes, void* arg);
            static int SetBufferSize(jack_nframes_t nframes, void* arg);
            static void SetTimebaseCallback(jack_transport_state_t state, jack_nframes_t nframes, jack_position_t* pos, int new_pos, void* arg);
            static void SetConnectCallback(jack_port_id_t a, jack_port_id_t b, int connect, void* arg);

            //jack client
            jack_client_t* fClient;
            const char* fName;

            //jack ports
            jack_port_t** fAudioCapturePorts;
            jack_port_t** fAudioPlaybackPorts;
            jack_port_t** fMidiCapturePorts;
            jack_port_t** fMidiPlaybackPorts;

            //sync and transport
            int fLastTransportState;

            //monitoring
#ifdef JACK_MONITOR
            jack_time_t fPeriodUsecs;
            JackGnuPlotMonitor<float>* fNetTimeMon;
#endif

            bool Init(bool auto_connect);
            int AllocPorts();
            void FreePorts();

            //transport
            void EncodeTransportData();
            void DecodeTransportData();

            int Process();
            void TimebaseCallback(jack_position_t* pos);
            void ConnectPorts();
            void ConnectCallback(jack_port_id_t a, jack_port_id_t b, int connect);

        public:

            JackNetMaster(JackNetSocket& socket, session_params_t& params, const char* multicast_ip);
            ~JackNetMaster();

            bool IsSlaveReadyToRoll();
    };

    typedef std::list<JackNetMaster*> master_list_t;
    typedef master_list_t::iterator master_list_it_t;

    /**
    \Brief This class describer the Network Manager
    */

    class JackNetMasterManager
    {
            friend class JackNetMaster;

        private:

            static void SetShutDown(void* arg);
            static int SetSyncCallback(jack_transport_state_t state, jack_position_t* pos, void* arg);
            static void* NetManagerThread(void* arg);

            jack_client_t* fClient;
            const char* fName;
            char fMulticastIP[32];
            JackNetSocket fSocket;
            jack_native_thread_t fThread;
            master_list_t fMasterList;
            uint32_t fGlobalID;
            bool fRunning;
            bool fAutoConnect;

            void Run();
            JackNetMaster* InitMaster(session_params_t& params);
            master_list_it_t FindMaster(uint32_t client_id);
            int KillMaster(session_params_t* params);
            int SyncCallback(jack_transport_state_t state, jack_position_t* pos);
            int CountIO(int flags);
            void ShutDown();

        public:

            JackNetMasterManager(jack_client_t* jack_client, const JSList* params);
            ~JackNetMasterManager();
    };
}

#endif