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jack2/common/JackNetDriver.cpp

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  1. /*

  2. Copyright (C) 2001 Paul Davis

  3. Copyright (C) 2008 Romain Moret at Grame

  4. 

  5. This program is free software; you can redistribute it and/or modify

  6. it under the terms of the GNU General Public License as published by

  7. the Free Software Foundation; either version 2 of the License, or

  8. (at your option) any later version.

  9. 

  10. This program is distributed in the hope that it will be useful,

  11. but WITHOUT ANY WARRANTY; without even the implied warranty of

  12. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  13. GNU General Public License for more details.

  14. 

  15. You should have received a copy of the GNU General Public License

  16. along with this program; if not, write to the Free Software

  17. Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

  18. 

  19. */

  20. 

  21. #include "JackNetDriver.h"

  22. #include "JackEngineControl.h"

  23. #include "JackClientControl.h"

  24. #include "JackGraphManager.h"

  25. #include "JackDriverLoader.h"

  26. #include "JackThreadedDriver.h"

  27. #include "JackWaitThreadedDriver.h"

  28. 

  29. #define DEFAULT_MULTICAST_IP "225.3.19.154"

  30. #define DEFAULT_PORT 19000

  31. 

  32. using namespace std;

  33. 

  34. namespace Jack

  35. {

  36.     JackNetDriver::JackNetDriver ( const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table,

  37.                                    const char* ip, int port, int mtu, int midi_input_ports, int midi_output_ports,

  38.                                    const char* net_name, uint transport_sync, char network_mode )

  39.             : JackAudioDriver ( name, alias, engine, table ), JackNetSlaveInterface ( ip, port )

  40.     {

  41.         jack_log ( "JackNetDriver::JackNetDriver ip %s, port %d", ip, port );

  42. 

  43.         fParams.fMtu = mtu;

  44.         fParams.fSendMidiChannels = midi_input_ports;

  45.         fParams.fReturnMidiChannels = midi_output_ports;

  46.         strcpy ( fParams.fName, net_name );

  47.         fSocket.GetName ( fParams.fSlaveNetName );

  48.         fParams.fTransportSync = transport_sync;

  49.         fParams.fNetworkMode = network_mode;

  50. #ifdef JACK_MONITOR

  51.         fNetTimeMon = NULL;

  52. #endif

  53.     }

  54. 

  55.     JackNetDriver::~JackNetDriver()

  56.     {

  57.         delete[] fMidiCapturePortList;

  58.         delete[] fMidiPlaybackPortList;

  59. #ifdef JACK_MONITOR

  60.         delete fNetTimeMon;

  61. #endif

  62.     }

  63. 

  64. //*************************************initialization***********************************************************************

  65. 

  66.     int JackNetDriver::Open ( jack_nframes_t buffer_size, jack_nframes_t samplerate, bool capturing, bool playing,

  67.                               int inchannels, int outchannels, bool monitor,

  68.                               const char* capture_driver_name, const char* playback_driver_name,

  69.                               jack_nframes_t capture_latency, jack_nframes_t playback_latency )

  70.     {

  71.         int res = JackAudioDriver::Open ( buffer_size, samplerate, capturing, playing, inchannels, outchannels, monitor,

  72.                                           capture_driver_name, playback_driver_name, capture_latency, playback_latency );

  73.         fEngineControl->fPeriod = 0;

  74.         fEngineControl->fComputation = 500 * 1000;

  75.         fEngineControl->fConstraint = 500 * 1000;

  76.         return res;

  77.     }

  78. 

  79. #ifdef JACK_MONITOR

  80.     int JackNetDriver::Close()

  81.     {

  82.         if ( fNetTimeMon )

  83.             fNetTimeMon->Save();

  84.         return JackDriver::Close();

  85.     }

  86. #endif

  87. 

  88.     int JackNetDriver::Attach()

  89.     {

  90.         return 0;

  91.     }

  92. 

  93.     int JackNetDriver::Detach()

  94.     {

  95.         return 0;

  96.     }

  97. 

  98.     bool JackNetDriver::Init()

  99.     {

  100.         jack_log ( "JackNetDriver::Init()" );

  101. 

  102.         //new loading, but existing socket, restart the driver

  103.         if ( fSocket.IsSocket() )

  104.             Restart();

  105. 

  106.         //set the parameters to send

  107.         fParams.fSendAudioChannels = fCaptureChannels;

  108.         fParams.fReturnAudioChannels = fPlaybackChannels;

  109.         fParams.fSlaveSyncMode = fEngineControl->fSyncMode;

  110. 

  111.         //display some additional infos

  112.         jack_info ( "NetAdapter started in %s mode %s Master's transport sync.",

  113.                     ( fParams.fSlaveSyncMode ) ? "sync" : "async", ( fParams.fTransportSync ) ? "with" : "without" );

  114. 

  115.         if ( !JackNetSlaveInterface::Init() )

  116.             return false;;

  117. 

  118.         //driver parametering

  119.         JackAudioDriver::SetBufferSize ( fParams.fPeriodSize );

  120.         JackAudioDriver::SetSampleRate ( fParams.fSampleRate );

  121. 

  122.         JackDriver::NotifyBufferSize ( fParams.fPeriodSize );

  123.         JackDriver::NotifySampleRate ( fParams.fSampleRate );

  124. 

  125.         //allocate midi ports lists

  126.         fMidiCapturePortList = new jack_port_id_t [fParams.fSendMidiChannels];

  127.         fMidiPlaybackPortList = new jack_port_id_t [fParams.fReturnMidiChannels];

  128. 

  129.         //register jack ports

  130.         if ( AllocPorts() != 0 )

  131.         {

  132.             jack_error ( "Can't allocate ports." );

  133.             return false;

  134.         }

  135. 

  136.         //set global paramaters

  137.         SetParams();

  138. 

  139.         //init done, display parameters

  140.         SessionParamsDisplay ( &fParams );

  141. 

  142.         //monitor

  143. #ifdef JACK_MONITOR

  144.         string plot_name;

  145.         //NetTimeMon

  146.         plot_name = string ( fParams.fName );

  147.         plot_name += string ( "_slave" );

  148.         plot_name += ( fEngineControl->fSyncMode ) ? string ( "_sync" ) : string ( "_async" );

  149.         switch ( fParams.fNetworkMode )

  150.         {

  151.         	case 's' :

  152. 				plot_name += string ( "_slow" );

  153. 				break;

  154. 			case 'n' :

  155. 				plot_name += string ( "_normal" );

  156. 				break;

  157. 			case 'f' :

  158. 				plot_name += string ( "_fast" );

  159. 				break;

  160.         }

  161.         fNetTimeMon = new JackGnuPlotMonitor<float> ( 128, 4, plot_name );

  162.         string net_time_mon_fields[] =

  163.         {

  164.             string ( "end of read" ),

  165.             string ( "start of write" ),

  166.             string ( "sync send" ),

  167.             string ( "end of write" )

  168.         };

  169.         string net_time_mon_options[] =

  170.         {

  171.             string ( "set xlabel \"audio cycles\"" ),

  172.             string ( "set ylabel \"% of audio cycle\"" )

  173.         };

  174.         fNetTimeMon->SetPlotFile ( net_time_mon_options, 2, net_time_mon_fields, 4 );

  175. #endif

  176. 

  177.         return true;

  178.     }

  179. 

  180.     void JackNetDriver::Restart()

  181.     {

  182.         jack_log ( "JackNetDriver::Restart" );

  183.         jack_info ( "Restarting driver..." );

  184.         delete[] fTxBuffer;

  185.         fTxBuffer = NULL;

  186.         delete[] fRxBuffer;

  187.         fRxBuffer = NULL;

  188.         delete fNetAudioCaptureBuffer;

  189.         fNetAudioCaptureBuffer = NULL;

  190.         delete fNetAudioPlaybackBuffer;

  191.         fNetAudioPlaybackBuffer = NULL;

  192.         delete fNetMidiCaptureBuffer;

  193.         fNetMidiCaptureBuffer = NULL;

  194.         delete fNetMidiPlaybackBuffer;

  195.         fNetMidiPlaybackBuffer = NULL;

  196.         FreePorts();

  197.         delete[] fMidiCapturePortList;

  198.         fMidiCapturePortList = NULL;

  199.         delete[] fMidiPlaybackPortList;

  200.         fMidiPlaybackPortList = NULL;

  201. #ifdef JACK_MONITOR

  202.         delete fNetTimeMon;

  203.         fNetTimeMon = NULL;

  204. #endif

  205.     }

  206. 

  207.     int JackNetDriver::AllocPorts()

  208.     {

  209.         jack_log ( "JackNetDriver::AllocPorts fBufferSize = %ld fSampleRate = %ld", fEngineControl->fBufferSize, fEngineControl->fSampleRate );

  210.         JackPort* port;

  211.         jack_port_id_t port_id;

  212.         char name[JACK_CLIENT_NAME_SIZE + JACK_PORT_NAME_SIZE];

  213.         char alias[JACK_CLIENT_NAME_SIZE + JACK_PORT_NAME_SIZE];

  214.         unsigned long port_flags;

  215.         int audio_port_index;

  216.         uint midi_port_index;

  217. 

  218.         //audio

  219.         port_flags = JackPortIsOutput | JackPortIsPhysical | JackPortIsTerminal;

  220.         for ( audio_port_index = 0; audio_port_index < fCaptureChannels; audio_port_index++ )

  221.         {

  222.             snprintf ( alias, sizeof ( alias ) - 1, "%s:%s:out%d", fAliasName, fCaptureDriverName, audio_port_index + 1 );

  223.             snprintf ( name, sizeof ( name ) - 1, "%s:capture_%d", fClientControl.fName, audio_port_index + 1 );

  224.             if ( ( port_id = fGraphManager->AllocatePort ( fClientControl.fRefNum, name, JACK_DEFAULT_AUDIO_TYPE,

  225.                              static_cast<JackPortFlags> ( port_flags ), fEngineControl->fBufferSize ) ) == NO_PORT )

  226.             {

  227.                 jack_error ( "driver: cannot register port for %s", name );

  228.                 return -1;

  229.             }

  230.             port = fGraphManager->GetPort ( port_id );

  231.             port->SetAlias ( alias );

  232.             port->SetLatency ( fEngineControl->fBufferSize );

  233.             fCapturePortList[audio_port_index] = port_id;

  234.             jack_log ( "JackNetDriver::AllocPorts() fCapturePortList[%d] audio_port_index = %ld fPortLatency = %ld", audio_port_index, port_id, port->GetLatency() );

  235.         }

  236.         port_flags = JackPortIsInput | JackPortIsPhysical | JackPortIsTerminal;

  237.         for ( audio_port_index = 0; audio_port_index < fPlaybackChannels; audio_port_index++ )

  238.         {

  239.             snprintf ( alias, sizeof ( alias ) - 1, "%s:%s:in%d", fAliasName, fPlaybackDriverName, audio_port_index + 1 );

  240.             snprintf ( name, sizeof ( name ) - 1, "%s:playback_%d",fClientControl.fName, audio_port_index + 1 );

  241.             if ( ( port_id = fGraphManager->AllocatePort ( fClientControl.fRefNum, name, JACK_DEFAULT_AUDIO_TYPE,

  242.                              static_cast<JackPortFlags> ( port_flags ), fEngineControl->fBufferSize ) ) == NO_PORT )

  243.             {

  244.                 jack_error ( "driver: cannot register port for %s", name );

  245.                 return -1;

  246.             }

  247.             port = fGraphManager->GetPort ( port_id );

  248.             port->SetAlias ( alias );

  249.             port->SetLatency ( ( fParams.fNetworkMode == 'f' ) ? 0 : fEngineControl->fBufferSize + ( ( fEngineControl->fSyncMode ) ? 0 : fEngineControl->fBufferSize ) );

  250.             fPlaybackPortList[audio_port_index] = port_id;

  251.             jack_log ( "JackNetDriver::AllocPorts() fPlaybackPortList[%d] audio_port_index = %ld fPortLatency = %ld", audio_port_index, port_id, port->GetLatency() );

  252.         }

  253.         //midi

  254.         port_flags = JackPortIsOutput | JackPortIsPhysical | JackPortIsTerminal;

  255.         for ( midi_port_index = 0; midi_port_index < fParams.fSendMidiChannels; midi_port_index++ )

  256.         {

  257.             snprintf ( alias, sizeof ( alias ) - 1, "%s:%s:out%d", fAliasName, fCaptureDriverName, midi_port_index + 1 );

  258.             snprintf ( name, sizeof ( name ) - 1, "%s:midi_capture_%d", fClientControl.fName, midi_port_index + 1 );

  259.             if ( ( port_id = fGraphManager->AllocatePort ( fClientControl.fRefNum, name, JACK_DEFAULT_MIDI_TYPE,

  260.                              static_cast<JackPortFlags> ( port_flags ), fEngineControl->fBufferSize ) ) == NO_PORT )

  261.             {

  262.                 jack_error ( "driver: cannot register port for %s", name );

  263.                 return -1;

  264.             }

  265.             port = fGraphManager->GetPort ( port_id );

  266.             port->SetLatency ( fEngineControl->fBufferSize );

  267.             fMidiCapturePortList[midi_port_index] = port_id;

  268.             jack_log ( "JackNetDriver::AllocPorts() fMidiCapturePortList[%d] midi_port_index = %ld fPortLatency = %ld", midi_port_index, port_id, port->GetLatency() );

  269.         }

  270. 

  271.         port_flags = JackPortIsInput | JackPortIsPhysical | JackPortIsTerminal;

  272.         for ( midi_port_index = 0; midi_port_index < fParams.fReturnMidiChannels; midi_port_index++ )

  273.         {

  274.             snprintf ( alias, sizeof ( alias ) - 1, "%s:%s:in%d", fAliasName, fPlaybackDriverName, midi_port_index + 1 );

  275.             snprintf ( name, sizeof ( name ) - 1, "%s:midi_playback_%d", fClientControl.fName, midi_port_index + 1 );

  276.             if ( ( port_id = fGraphManager->AllocatePort ( fClientControl.fRefNum, name, JACK_DEFAULT_MIDI_TYPE,

  277.                              static_cast<JackPortFlags> ( port_flags ), fEngineControl->fBufferSize ) ) == NO_PORT )

  278.             {

  279.                 jack_error ( "driver: cannot register port for %s", name );

  280.                 return -1;

  281.             }

  282.             port = fGraphManager->GetPort ( port_id );

  283.             port->SetLatency ( ( fParams.fNetworkMode == 'f' ) ? 0 : fEngineControl->fBufferSize + ( ( fEngineControl->fSyncMode ) ? 0 : fEngineControl->fBufferSize ) );

  284.             fMidiPlaybackPortList[midi_port_index] = port_id;

  285.             jack_log ( "JackNetDriver::AllocPorts() fMidiPlaybackPortList[%d] midi_port_index = %ld fPortLatency = %ld", midi_port_index, port_id, port->GetLatency() );

  286.         }

  287. 

  288.         return 0;

  289.     }

  290. 

  291.     int JackNetDriver::FreePorts()

  292.     {

  293.         jack_log ( "JackNetDriver::FreePorts" );

  294.         int audio_port_index;

  295.         uint midi_port_index;

  296.         for ( audio_port_index = 0; audio_port_index < fCaptureChannels; audio_port_index++ )

  297.             fGraphManager->ReleasePort ( fClientControl.fRefNum, fCapturePortList[audio_port_index] );

  298.         for ( audio_port_index = 0; audio_port_index < fPlaybackChannels; audio_port_index++ )

  299.             fGraphManager->ReleasePort ( fClientControl.fRefNum, fPlaybackPortList[audio_port_index] );

  300.         for ( midi_port_index = 0; midi_port_index < fParams.fSendMidiChannels; midi_port_index++ )

  301.             fGraphManager->ReleasePort ( fClientControl.fRefNum, fMidiCapturePortList[midi_port_index] );

  302.         for ( midi_port_index = 0; midi_port_index < fParams.fReturnMidiChannels; midi_port_index++ )

  303.             fGraphManager->ReleasePort ( fClientControl.fRefNum, fMidiPlaybackPortList[midi_port_index] );

  304.         return 0;

  305.     }

  306. 

  307.     JackMidiBuffer* JackNetDriver::GetMidiInputBuffer ( int port_index )

  308.     {

  309.         return static_cast<JackMidiBuffer*> ( fGraphManager->GetBuffer ( fMidiCapturePortList[port_index], fEngineControl->fBufferSize ) );

  310.     }

  311. 

  312.     JackMidiBuffer* JackNetDriver::GetMidiOutputBuffer ( int port_index )

  313.     {

  314.         return static_cast<JackMidiBuffer*> ( fGraphManager->GetBuffer ( fMidiPlaybackPortList[port_index], fEngineControl->fBufferSize ) );

  315.     }

  316. 

  317.     int JackNetDriver::SetSyncPacket()

  318.     {

  319.         if ( fParams.fTransportSync )

  320.         {

  321.             //set the TransportData

  322. 

  323.             //copy to TxBuffer

  324.             memcpy ( fTxData, &fTransportData, sizeof ( net_transport_data_t ) );

  325.         }

  326.         return 0;

  327.     }

  328. 

  329. //*************************************process************************************************************************

  330. 

  331.     int JackNetDriver::Read()

  332.     {

  333.         uint midi_port_index;

  334.         uint audio_port_index;

  335. 

  336.         //buffers

  337.         for ( midi_port_index = 0; midi_port_index < fParams.fSendMidiChannels; midi_port_index++ )

  338.             fNetMidiCaptureBuffer->SetBuffer ( midi_port_index, GetMidiInputBuffer ( midi_port_index ) );

  339.         for ( audio_port_index = 0; audio_port_index < fParams.fSendAudioChannels; audio_port_index++ )

  340.             fNetAudioCaptureBuffer->SetBuffer ( audio_port_index, GetInputBuffer ( audio_port_index ) );

  341. 

  342. #ifdef JACK_MONITOR

  343.         fNetTimeMon->New();

  344. #endif

  345. 

  346.         //receive sync (launch the cycle)

  347.         if ( SyncRecv() == SOCKET_ERROR )

  348.             return 0;

  349. 

  350.         //take the time at the beginning of the cycle

  351.         JackDriver::CycleTakeBeginTime();

  352. 

  353.         //audio, midi or sync if driver is late

  354.         if ( DataRecv() == SOCKET_ERROR )

  355.             return SOCKET_ERROR;

  356. 

  357. #ifdef JACK_MONITOR

  358.         fNetTimeMon->Add ( ( ( float ) ( GetMicroSeconds() - JackDriver::fBeginDateUst ) / ( float ) fEngineControl->fPeriodUsecs ) * 100.f );

  359. #endif

  360. 

  361.         return 0;

  362.     }

  363. 

  364.     int JackNetDriver::Write()

  365.     {

  366.         uint midi_port_index;

  367.         int audio_port_index;

  368. 

  369.         //buffers

  370.         for ( midi_port_index = 0; midi_port_index < fParams.fReturnMidiChannels; midi_port_index++ )

  371.             fNetMidiPlaybackBuffer->SetBuffer ( midi_port_index, GetMidiOutputBuffer ( midi_port_index ) );

  372.         for ( audio_port_index = 0; audio_port_index < fPlaybackChannels; audio_port_index++ )

  373.             fNetAudioPlaybackBuffer->SetBuffer ( audio_port_index, GetOutputBuffer ( audio_port_index ) );

  374. 

  375. #ifdef JACK_MONITOR

  376.         fNetTimeMon->Add ( ( ( float ) ( GetMicroSeconds() - JackDriver::fBeginDateUst ) / ( float ) fEngineControl->fPeriodUsecs ) * 100.f );

  377. #endif

  378. 

  379.         //sync

  380.         memset ( fTxData, 0, fPayloadSize );

  381.         SetSyncPacket();

  382. 

  383.         //send sync

  384.         if ( SyncSend() == SOCKET_ERROR )

  385.             return SOCKET_ERROR;

  386. 

  387. #ifdef JACK_MONITOR

  388.         fNetTimeMon->Add ( ( ( float ) ( GetMicroSeconds() - JackDriver::fBeginDateUst ) / ( float ) fEngineControl->fPeriodUsecs ) * 100.f );

  389. #endif

  390. 

  391.         //send data

  392.         if ( DataSend() == SOCKET_ERROR )

  393.             return SOCKET_ERROR;

  394. 

  395. #ifdef JACK_MONITOR

  396.         fNetTimeMon->AddLast ( ( ( float ) ( GetMicroSeconds() - JackDriver::fBeginDateUst ) / ( float ) fEngineControl->fPeriodUsecs ) * 100.f );

  397. #endif

  398. 

  399.         return 0;

  400.     }

  401. 

  402. //*************************************loader*******************************************************

  403. 

  404. #ifdef __cplusplus

  405.     extern "C"

  406.     {

  407. #endif

  408.         EXPORT jack_driver_desc_t* driver_get_descriptor ()

  409.         {

  410.             jack_driver_desc_t* desc = ( jack_driver_desc_t* ) calloc ( 1, sizeof ( jack_driver_desc_t ) );

  411.             strcpy ( desc->name, "net" );

  412.             desc->nparams = 10;

  413.             desc->params = ( jack_driver_param_desc_t* ) calloc ( desc->nparams, sizeof ( jack_driver_param_desc_t ) );

  414. 

  415.             int i = 0;

  416.             strcpy ( desc->params[i].name, "multicast_ip" );

  417.             desc->params[i].character = 'a';

  418.             desc->params[i].type = JackDriverParamString;

  419.             strcpy ( desc->params[i].value.str, DEFAULT_MULTICAST_IP );

  420.             strcpy ( desc->params[i].short_desc, "Multicast Address" );

  421.             strcpy ( desc->params[i].long_desc, desc->params[i].short_desc );

  422. 

  423.             i++;

  424.             strcpy ( desc->params[i].name, "udp_net_port" );

  425.             desc->params[i].character = 'p';

  426.             desc->params[i].type = JackDriverParamInt;

  427.             desc->params[i].value.i = 19000;

  428.             strcpy ( desc->params[i].short_desc, "UDP port" );

  429.             strcpy ( desc->params[i].long_desc, desc->params[i].short_desc );

  430. 

  431.             i++;

  432.             strcpy ( desc->params[i].name, "mtu" );

  433.             desc->params[i].character = 'M';

  434.             desc->params[i].type = JackDriverParamInt;

  435.             desc->params[i].value.i = 1500;

  436.             strcpy ( desc->params[i].short_desc, "MTU to the master" );

  437.             strcpy ( desc->params[i].long_desc, desc->params[i].short_desc );

  438. 

  439.             i++;

  440.             strcpy ( desc->params[i].name, "input_ports" );

  441.             desc->params[i].character = 'C';

  442.             desc->params[i].type = JackDriverParamInt;

  443.             desc->params[i].value.i = 2;

  444.             strcpy ( desc->params[i].short_desc, "Number of audio input ports" );

  445.             strcpy ( desc->params[i].long_desc, desc->params[i].short_desc );

  446. 

  447.             i++;

  448.             strcpy ( desc->params[i].name, "output_ports" );

  449.             desc->params[i].character = 'P';

  450.             desc->params[i].type = JackDriverParamInt;

  451.             desc->params[i].value.i = 2;

  452.             strcpy ( desc->params[i].short_desc, "Number of audio output ports" );

  453.             strcpy ( desc->params[i].long_desc, desc->params[i].short_desc );

  454. 

  455.             i++;

  456.             strcpy ( desc->params[i].name, "midi_in_ports" );

  457.             desc->params[i].character = 'i';

  458.             desc->params[i].type = JackDriverParamInt;

  459.             desc->params[i].value.i = 0;

  460.             strcpy ( desc->params[i].short_desc, "Number of midi input ports" );

  461.             strcpy ( desc->params[i].long_desc, desc->params[i].short_desc );

  462. 

  463.             i++;

  464.             strcpy ( desc->params[i].name, "midi_out_ports" );

  465.             desc->params[i].character = 'o';

  466.             desc->params[i].type = JackDriverParamUInt;

  467.             desc->params[i].value.i = 0;

  468.             strcpy ( desc->params[i].short_desc, "Number of midi output ports" );

  469.             strcpy ( desc->params[i].long_desc, desc->params[i].short_desc );

  470. 

  471.             i++;

  472.             strcpy ( desc->params[i].name, "client_name" );

  473.             desc->params[i].character = 'n';

  474.             desc->params[i].type = JackDriverParamString;

  475.             strcpy ( desc->params[i].value.str, "'hostname'" );

  476.             strcpy ( desc->params[i].short_desc, "Name of the jack client" );

  477.             strcpy ( desc->params[i].long_desc, desc->params[i].short_desc );

  478. 

  479.             i++;

  480.             strcpy ( desc->params[i].name, "transport_sync" );

  481.             desc->params[i].character  = 't';

  482.             desc->params[i].type = JackDriverParamUInt;

  483.             desc->params[i].value.ui = 1U;

  484.             strcpy ( desc->params[i].short_desc, "Sync transport with master's" );

  485.             strcpy ( desc->params[i].long_desc, desc->params[i].short_desc );

  486. 

  487.             i++;

  488.             strcpy ( desc->params[i].name, "mode" );

  489.             desc->params[i].character  = 'm';

  490.             desc->params[i].type = JackDriverParamString;

  491.             strcpy ( desc->params[i].value.str, "normal" );

  492.             strcpy ( desc->params[i].short_desc, "Fast (0 latency), Normal (1 cycle latency) or Slow (2 cycles latency)." );

  493.             strcpy ( desc->params[i].long_desc, desc->params[i].short_desc );

  494. 

  495.             return desc;

  496.         }

  497. 

  498.         EXPORT Jack::JackDriverClientInterface* driver_initialize ( Jack::JackLockedEngine* engine, Jack::JackSynchro* table, const JSList* params )

  499.         {

  500.         	jack_log ( "driver_initialize : net" );

  501. 

  502.             if ( SocketAPIInit() < 0 )

  503.             {

  504.                 jack_error ( "Can't init Socket API, exiting..." );

  505.                 return NULL;

  506.             }

  507.             const char* multicast_ip = DEFAULT_MULTICAST_IP;

  508.             char name[JACK_CLIENT_NAME_SIZE];

  509.             GetHostName ( name, JACK_CLIENT_NAME_SIZE );

  510.             int udp_port = DEFAULT_PORT;

  511.             int mtu = 1500;

  512.             uint transport_sync = 1;

  513.             jack_nframes_t period_size = 128;

  514.             jack_nframes_t sample_rate = 48000;

  515.             int audio_capture_ports = 2;

  516.             int audio_playback_ports = 2;

  517.             int midi_input_ports = 0;

  518.             int midi_output_ports = 0;

  519.             bool monitor = false;

  520.             char network_mode = 'n';

  521. 

  522.             const JSList* node;

  523.             const jack_driver_param_t* param;

  524.             for ( node = params; node; node = jack_slist_next ( node ) )

  525.             {

  526.                 param = ( const jack_driver_param_t* ) node->data;

  527.                 switch ( param->character )

  528.                 {

  529.                     case 'a' :

  530.                         multicast_ip = strdup ( param->value.str );

  531.                         break;

  532.                     case 'p':

  533.                         udp_port = param->value.ui;

  534.                         break;

  535.                     case 'M':

  536.                         mtu = param->value.i;

  537.                         break;

  538.                     case 'C':

  539.                         audio_capture_ports = param->value.i;

  540.                         break;

  541.                     case 'P':

  542.                         audio_playback_ports = param->value.i;

  543.                         break;

  544.                     case 'i':

  545.                         midi_input_ports = param->value.i;

  546.                         break;

  547.                     case 'o':

  548.                         midi_output_ports = param->value.i;

  549.                         break;

  550.                     case 'n' :

  551.                         strncpy ( name, param->value.str, JACK_CLIENT_NAME_SIZE );

  552.                         break;

  553.                     case 't' :

  554.                         transport_sync = param->value.ui;

  555.                         break;

  556.                     case 'm' :

  557. 						if ( strcmp ( param->value.str, "slow" ) == 0 )

  558. 							network_mode = 's';

  559. 						else if ( strcmp ( param->value.str, "normal" ) == 0 )

  560. 							network_mode = 'n';

  561. 						else if ( strcmp ( param->value.str, "fast" ) == 0 )

  562. 							network_mode = 'f';

  563.                         break;

  564.                 }

  565.             }

  566. 

  567.             jack_info ( "mode : %c", network_mode );

  568. 

  569.             Jack::JackDriverClientInterface* driver = new Jack::JackWaitThreadedDriver (

  570.                 new Jack::JackNetDriver ( "system", "net_pcm", engine, table, multicast_ip, udp_port, mtu,

  571.                                           midi_input_ports, midi_output_ports, name, transport_sync, network_mode ) );

  572.             if ( driver->Open ( period_size, sample_rate, 1, 1, audio_capture_ports, audio_playback_ports,

  573.                                 monitor, "from_master_", "to_master_", 0, 0 ) == 0 )

  574.                 return driver;

  575. 

  576.             delete driver;

  577.             return NULL;

  578.         }

  579. 

  580. #ifdef __cplusplus

  581.     }

  582. #endif

  583. }