jack2/common/JackNetDriver.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 __JackNetDriver__
#define __JackNetDriver__

#include "JackTimedDriver.h"
#include "JackNetInterface.h"

//#define JACK_MONITOR

namespace Jack
{
    /**
    \Brief This class describes the Net Backend
    */

    class JackNetDriver : public JackWaiterDriver, public JackNetSlaveInterface
    {

        private:

            //jack data
            jack_port_id_t* fMidiCapturePortList;
            jack_port_id_t* fMidiPlaybackPortList;

            //transport
            int fLastTransportState;
            int fLastTimebaseMaster;
            
            // The wanted value at creation time (may be different than the value actually returned by the master)
            int fWantedAudioCaptureChannels;   
            int fWantedAudioPlaybackChannels;  
            
            int fWantedMIDICaptureChannels;
            int fWantedMIDIPlaybackChannels;

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

            bool Initialize();
            void FreeAll();

            int AllocPorts();
            int FreePorts();

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

            JackMidiBuffer* GetMidiInputBuffer(int port_index);
            JackMidiBuffer* GetMidiOutputBuffer(int port_index);

            void SaveConnections(int alias);
            
            void UpdateLatencies();

        public:

            JackNetDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table,
                        const char* ip, int port, int mtu, int midi_input_ports, int midi_output_ports,
                        char* net_name, uint transport_sync, int network_latency, int celt_encoding, int opus_encoding);
            virtual ~JackNetDriver();

            int Open(jack_nframes_t buffer_size,
                         jack_nframes_t samplerate,
                         bool capturing,
                         bool playing,
                         int inchannels,
                         int outchannels,
                         bool monitor,
                         const char* capture_driver_name,
                         const char* playback_driver_name,
                         jack_nframes_t capture_latency,
                         jack_nframes_t playback_latency);
            int Close();

            int Attach();
            int Detach();

            int Read();
            int Write();

            // BufferSize can't be changed
            bool IsFixedBufferSize()
            {
                return true;
            }

            int SetBufferSize(jack_nframes_t buffer_size)
            {
                return -1;
            }

            int SetSampleRate(jack_nframes_t sample_rate)
            {
                return -1;
            }

    };
}

#endif