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Collection of tools useful for audio production
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Cadence/c++/carla-backend/fluidsynth.cpp

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  1. /*

  2.  * Carla Backend

  3.  * Copyright (C) 2011-2012 Filipe Coelho <falktx@gmail.com>

  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.  * 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.  * For a full copy of the GNU General Public License see the COPYING file

  16.  */

  17. 

  18. #ifdef BUILD_BRIDGE

  19. #error Should not use fluidsynth for bridges!

  20. #endif

  21. 

  22. #include "carla_plugin.h"

  23. 

  24. #ifdef WANT_FLUIDSYNTH

  25. #include "carla_fluidsynth.h"

  26. #else

  27. #warning fluidsynth not available (no SF2 support)

  28. #endif

  29. 

  30. CARLA_BACKEND_START_NAMESPACE

  31. 

  32. #if 0

  33. } /* adjust editor indent */

  34. #endif

  35. 

  36. #ifdef WANT_FLUIDSYNTH

  37. 

  38. /*!

  39.  * @defgroup CarlaBackendFluidSynthPlugin Carla Backend FluidSynth Plugin

  40.  *

  41.  * The Carla Backend FluidSynth Plugin.\n

  42.  * http://www.fluidsynth.org/

  43.  * @{

  44.  */

  45. 

  46. class FluidSynthPlugin : public CarlaPlugin

  47. {

  48. public:

  49.     FluidSynthPlugin(CarlaEngine* const engine, unsigned short id) : CarlaPlugin(engine, id)

  50.     {

  51.         qDebug("FluidSynthPlugin::FluidSynthPlugin()");

  52. 

  53.         m_type  = PLUGIN_SF2;

  54.         m_label = nullptr;

  55. 

  56.         // create settings

  57.         f_settings = new_fluid_settings();

  58. 

  59.         // define settings

  60.         fluid_settings_setnum(f_settings, "synth.sample-rate", x_engine->getSampleRate());

  61.         fluid_settings_setint(f_settings, "synth.threadsafe-api ", 0);

  62. 

  63.         // create synth

  64.         f_synth = new_fluid_synth(f_settings);

  65. 

  66. #ifdef FLUIDSYNTH_VERSION_NEW_API

  67.         fluid_synth_set_sample_rate(f_synth, x_engine->getSampleRate());

  68. #endif

  69. 

  70.         // set default values

  71.         fluid_synth_set_reverb_on(f_synth, 0);

  72.         fluid_synth_set_reverb(f_synth, FLUID_REVERB_DEFAULT_ROOMSIZE, FLUID_REVERB_DEFAULT_DAMP, FLUID_REVERB_DEFAULT_WIDTH, FLUID_REVERB_DEFAULT_LEVEL);

  73. 

  74.         fluid_synth_set_chorus_on(f_synth, 0);

  75.         fluid_synth_set_chorus(f_synth, FLUID_CHORUS_DEFAULT_N, FLUID_CHORUS_DEFAULT_LEVEL, FLUID_CHORUS_DEFAULT_SPEED, FLUID_CHORUS_DEFAULT_DEPTH, FLUID_CHORUS_DEFAULT_TYPE);

  76. 

  77.         fluid_synth_set_polyphony(f_synth, 64);

  78. 

  79.         for (int i=0; i < 16; i++)

  80.             fluid_synth_set_interp_method(f_synth, i, FLUID_INTERP_DEFAULT);

  81.     }

  82. 

  83.     ~FluidSynthPlugin()

  84.     {

  85.         qDebug("FluidSynthPlugin::~FluidSynthPlugin()");

  86. 

  87.         if (m_label)

  88.             free((void*)m_label);

  89. 

  90.         delete_fluid_synth(f_synth);

  91.         delete_fluid_settings(f_settings);

  92.     }

  93. 

  94.     // -------------------------------------------------------------------

  95.     // Information (base)

  96. 

  97.     PluginCategory category()

  98.     {

  99.         return PLUGIN_CATEGORY_SYNTH;

  100.     }

  101. 

  102.     // -------------------------------------------------------------------

  103.     // Information (count)

  104. 

  105.     uint32_t parameterScalePointCount(uint32_t parameterId)

  106.     {

  107.         Q_ASSERT(parameterId < param.count);

  108. 

  109.         switch (parameterId)

  110.         {

  111.         case FluidSynthChorusType:

  112.             return 2;

  113.         case FluidSynthInterpolation:

  114.             return 4;

  115.         default:

  116.             return 0;

  117.         }

  118.     }

  119. 

  120.     // -------------------------------------------------------------------

  121.     // Information (per-plugin data)

  122. 

  123.     double getParameterValue(uint32_t parameterId)

  124.     {

  125.         Q_ASSERT(parameterId < param.count);

  126.         return param_buffers[parameterId];

  127.     }

  128. 

  129.     double getParameterScalePointValue(uint32_t parameterId, uint32_t scalePointId)

  130.     {

  131.         Q_ASSERT(parameterId < param.count);

  132.         Q_ASSERT(scalePointId < parameterScalePointCount(parameterId));

  133. 

  134.         switch (parameterId)

  135.         {

  136.         case FluidSynthChorusType:

  137.             switch (scalePointId)

  138.             {

  139.             case 0:

  140.                 return FLUID_CHORUS_MOD_SINE;

  141.             case 1:

  142.                 return FLUID_CHORUS_MOD_TRIANGLE;

  143.             default:

  144.                 return FLUID_CHORUS_DEFAULT_TYPE;

  145.             }

  146.         case FluidSynthInterpolation:

  147.             switch (scalePointId)

  148.             {

  149.             case 0:

  150.                 return FLUID_INTERP_NONE;

  151.             case 1:

  152.                 return FLUID_INTERP_LINEAR;

  153.             case 2:

  154.                 return FLUID_INTERP_4THORDER;

  155.             case 3:

  156.                 return FLUID_INTERP_7THORDER;

  157.             default:

  158.                 return FLUID_INTERP_DEFAULT;

  159.             }

  160.         default:

  161.             return 0.0;

  162.         }

  163.     }

  164. 

  165.     void getLabel(char* const strBuf)

  166.     {

  167.         strncpy(strBuf, m_label, STR_MAX);

  168.     }

  169. 

  170.     void getMaker(char* const strBuf)

  171.     {

  172.         strncpy(strBuf, "FluidSynth SF2 engine", STR_MAX);

  173.     }

  174. 

  175.     void getCopyright(char* const strBuf)

  176.     {

  177.         strncpy(strBuf, "GNU GPL v2+", STR_MAX);

  178.     }

  179. 

  180.     void getRealName(char* const strBuf)

  181.     {

  182.         getLabel(strBuf);

  183.     }

  184. 

  185.     void getParameterName(uint32_t parameterId, char* const strBuf)

  186.     {

  187.         Q_ASSERT(parameterId < param.count);

  188. 

  189.         switch (parameterId)

  190.         {

  191.         case FluidSynthReverbOnOff:

  192.             strncpy(strBuf, "Reverb On/Off", STR_MAX);

  193.             break;

  194.         case FluidSynthReverbRoomSize:

  195.             strncpy(strBuf, "Reverb Room Size", STR_MAX);

  196.             break;

  197.         case FluidSynthReverbDamp:

  198.             strncpy(strBuf, "Reverb Damp", STR_MAX);

  199.             break;

  200.         case FluidSynthReverbLevel:

  201.             strncpy(strBuf, "Reverb Level", STR_MAX);

  202.             break;

  203.         case FluidSynthReverbWidth:

  204.             strncpy(strBuf, "Reverb Width", STR_MAX);

  205.             break;

  206.         case FluidSynthChorusOnOff:

  207.             strncpy(strBuf, "Chorus On/Off", STR_MAX);

  208.             break;

  209.         case FluidSynthChorusNr:

  210.             strncpy(strBuf, "Chorus Voice Count", STR_MAX);

  211.             break;

  212.         case FluidSynthChorusLevel:

  213.             strncpy(strBuf, "Chorus Level", STR_MAX);

  214.             break;

  215.         case FluidSynthChorusSpeedHz:

  216.             strncpy(strBuf, "Chorus Speed", STR_MAX);

  217.             break;

  218.         case FluidSynthChorusDepthMs:

  219.             strncpy(strBuf, "Chorus Depth", STR_MAX);

  220.             break;

  221.         case FluidSynthChorusType:

  222.             strncpy(strBuf, "Chorus Type", STR_MAX);

  223.             break;

  224.         case FluidSynthPolyphony:

  225.             strncpy(strBuf, "Polyphony", STR_MAX);

  226.             break;

  227.         case FluidSynthInterpolation:

  228.             strncpy(strBuf, "Interpolation", STR_MAX);

  229.             break;

  230.         case FluidSynthVoiceCount:

  231.             strncpy(strBuf, "Voice Count", STR_MAX);

  232.             break;

  233.         default:

  234.             *strBuf = 0;

  235.             break;

  236.         }

  237.     }

  238. 

  239.     void getParameterUnit(uint32_t parameterId, char* const strBuf)

  240.     {

  241.         Q_ASSERT(parameterId < param.count);

  242. 

  243.         switch (parameterId)

  244.         {

  245.         case FluidSynthChorusSpeedHz:

  246.             strncpy(strBuf, "Hz", STR_MAX);

  247.             break;

  248.         case FluidSynthChorusDepthMs:

  249.             strncpy(strBuf, "ms", STR_MAX);

  250.             break;

  251.         default:

  252.             *strBuf = 0;

  253.             break;

  254.         }

  255.     }

  256. 

  257.     void getParameterScalePointLabel(uint32_t parameterId, uint32_t scalePointId, char* const strBuf)

  258.     {

  259.         Q_ASSERT(parameterId < param.count);

  260.         Q_ASSERT(scalePointId < parameterScalePointCount(parameterId));

  261. 

  262.         switch (parameterId)

  263.         {

  264.         case FluidSynthChorusType:

  265.             switch (scalePointId)

  266.             {

  267.             case 0:

  268.                 strncpy(strBuf, "Sine wave", STR_MAX);

  269.                 return;

  270.             case 1:

  271.                 strncpy(strBuf, "Triangle wave", STR_MAX);

  272.                 return;

  273.             }

  274.         case FluidSynthInterpolation:

  275.             switch (scalePointId)

  276.             {

  277.             case 0:

  278.                 strncpy(strBuf, "None", STR_MAX);

  279.                 return;

  280.             case 1:

  281.                 strncpy(strBuf, "Straight-line", STR_MAX);

  282.                 return;

  283.             case 2:

  284.                 strncpy(strBuf, "Fourth-order", STR_MAX);

  285.                 return;

  286.             case 3:

  287.                 strncpy(strBuf, "Seventh-order", STR_MAX);

  288.                 return;

  289.             }

  290.         }

  291. 

  292.         *strBuf = 0;

  293.     }

  294. 

  295.     // -------------------------------------------------------------------

  296.     // Set data (plugin-specific stuff)

  297. 

  298.     void setParameterValue(uint32_t parameterId, double value, bool sendGui, bool sendOsc, bool sendCallback)

  299.     {

  300.         Q_ASSERT(parameterId < param.count);

  301.         param_buffers[parameterId] = fixParameterValue(value, param.ranges[parameterId]);

  302. 

  303.         switch (parameterId)

  304.         {

  305.         case FluidSynthReverbOnOff:

  306.             value = value > 0.5 ? 1 : 0;

  307.             fluid_synth_set_reverb_on(f_synth, value);

  308.             break;

  309. 

  310.         case FluidSynthReverbRoomSize:

  311.         case FluidSynthReverbDamp:

  312.         case FluidSynthReverbLevel:

  313.         case FluidSynthReverbWidth:

  314.             fluid_synth_set_reverb(f_synth, param_buffers[FluidSynthReverbRoomSize], param_buffers[FluidSynthReverbDamp], param_buffers[FluidSynthReverbWidth], param_buffers[FluidSynthReverbLevel]);

  315.             break;

  316. 

  317.         case FluidSynthChorusOnOff:

  318.         {

  319.             const CarlaPluginScopedDisabler m(this, ! x_engine->isOffline());

  320.             value = value > 0.5 ? 1 : 0;

  321.             fluid_synth_set_chorus_on(f_synth, value);

  322.             break;

  323.         }

  324. 

  325.         case FluidSynthChorusNr:

  326.         case FluidSynthChorusLevel:

  327.         case FluidSynthChorusSpeedHz:

  328.         case FluidSynthChorusDepthMs:

  329.         case FluidSynthChorusType:

  330.         {

  331.             const CarlaPluginScopedDisabler m(this, ! x_engine->isOffline());

  332.             fluid_synth_set_chorus(f_synth, rint(param_buffers[FluidSynthChorusNr]), param_buffers[FluidSynthChorusLevel], param_buffers[FluidSynthChorusSpeedHz], param_buffers[FluidSynthChorusDepthMs], rint(param_buffers[FluidSynthChorusType]));

  333.             break;

  334.         }

  335. 

  336.         case FluidSynthPolyphony:

  337.         {

  338.             const CarlaPluginScopedDisabler m(this, ! x_engine->isOffline());

  339.             fluid_synth_set_polyphony(f_synth, rint(value));

  340.             break;

  341.         }

  342. 

  343.         case FluidSynthInterpolation:

  344.         {

  345.             const CarlaPluginScopedDisabler m(this, ! x_engine->isOffline());

  346.             for (int i=0; i < 16; i++)

  347.                 fluid_synth_set_interp_method(f_synth, i, rint(value));

  348.             break;

  349.         }

  350. 

  351.         default:

  352.             break;

  353.         }

  354. 

  355.         CarlaPlugin::setParameterValue(parameterId, value, sendGui, sendOsc, sendCallback);

  356.     }

  357. 

  358.     void setMidiProgram(int32_t index, bool sendGui, bool sendOsc, bool sendCallback, bool block)

  359.     {

  360.         Q_ASSERT(index < (int32_t)midiprog.count);

  361. 

  362.         if (cin_channel < 0 || cin_channel > 15)

  363.             return;

  364. 

  365.         if (index >= 0)

  366.         {

  367.             if (x_engine->isOffline())

  368.             {

  369.                 if (block) engineProcessLock();

  370.                 fluid_synth_program_select(f_synth, cin_channel, f_id, midiprog.data[index].bank, midiprog.data[index].program);

  371.                 if (block) engineProcessUnlock();

  372.             }

  373.             else

  374.             {

  375.                 const CarlaPluginScopedDisabler m(this, block);

  376.                 fluid_synth_program_select(f_synth, cin_channel, f_id, midiprog.data[index].bank, midiprog.data[index].program);

  377.             }

  378.         }

  379. 

  380.         CarlaPlugin::setMidiProgram(index, sendGui, sendOsc, sendCallback, block);

  381.     }

  382. 

  383.     // -------------------------------------------------------------------

  384.     // Plugin state

  385. 

  386.     void reload()

  387.     {

  388.         qDebug("FluidSynthPlugin::reload() - start");

  389. 

  390.         // Safely disable plugin for reload

  391.         const CarlaPluginScopedDisabler m(this);

  392. 

  393.         if (x_client->isActive())

  394.             x_client->deactivate();

  395. 

  396.         // Remove client ports

  397.         removeClientPorts();

  398. 

  399.         // Delete old data

  400.         deleteBuffers();

  401. 

  402.         uint32_t aouts, params, j;

  403.         aouts  = 2;

  404.         params = FluidSynthParametersMax;

  405. 

  406.         aout.ports    = new CarlaEngineAudioPort*[aouts];

  407.         aout.rindexes = new uint32_t[aouts];

  408. 

  409.         param.data    = new ParameterData[params];

  410.         param.ranges  = new ParameterRanges[params];

  411. 

  412.         //const int portNameSize = CarlaEngine::maxPortNameSize() - 1;

  413.         char portName[STR_MAX];

  414. 

  415.         // ---------------------------------------

  416.         // Audio Outputs

  417. 

  418. #ifndef BUILD_BRIDGE

  419.         if (carlaOptions.process_mode != PROCESS_MODE_MULTIPLE_CLIENTS)

  420.         {

  421.             strcpy(portName, m_name);

  422.             strcat(portName, ":out-left");

  423.         }

  424.         else

  425. #endif

  426.             strcpy(portName, "out-left");

  427. 

  428.         aout.ports[0]    = (CarlaEngineAudioPort*)x_client->addPort(CarlaEnginePortTypeAudio, portName, false);

  429.         aout.rindexes[0] = 0;

  430. 

  431. #ifndef BUILD_BRIDGE

  432.         if (carlaOptions.process_mode != PROCESS_MODE_MULTIPLE_CLIENTS)

  433.         {

  434.             strcpy(portName, m_name);

  435.             strcat(portName, ":out-right");

  436.         }

  437.         else

  438. #endif

  439.             strcpy(portName, "out-right");

  440. 

  441.         aout.ports[1]    = (CarlaEngineAudioPort*)x_client->addPort(CarlaEnginePortTypeAudio, portName, false);

  442.         aout.rindexes[1] = 1;

  443. 

  444.         // ---------------------------------------

  445.         // MIDI Input

  446. 

  447. #ifndef BUILD_BRIDGE

  448.         if (carlaOptions.process_mode != PROCESS_MODE_MULTIPLE_CLIENTS)

  449.         {

  450.             strcpy(portName, m_name);

  451.             strcat(portName, ":midi-in");

  452.         }

  453.         else

  454. #endif

  455.             strcpy(portName, "midi-in");

  456. 

  457.         midi.portMin = (CarlaEngineMidiPort*)x_client->addPort(CarlaEnginePortTypeMIDI, portName, true);

  458. 

  459.         // ---------------------------------------

  460.         // Parameters

  461. 

  462. #ifndef BUILD_BRIDGE

  463.         if (carlaOptions.process_mode != PROCESS_MODE_MULTIPLE_CLIENTS)

  464.         {

  465.             strcpy(portName, m_name);

  466.             strcat(portName, ":control-in");

  467.         }

  468.         else

  469. #endif

  470.             strcpy(portName, "control-in");

  471. 

  472.         param.portCin = (CarlaEngineControlPort*)x_client->addPort(CarlaEnginePortTypeControl, portName, true);

  473. 

  474. #ifndef BUILD_BRIDGE

  475.         if (carlaOptions.process_mode != PROCESS_MODE_MULTIPLE_CLIENTS)

  476.         {

  477.             strcpy(portName, m_name);

  478.             strcat(portName, ":control-out");

  479.         }

  480.         else

  481. #endif

  482.             strcpy(portName, "control-out");

  483. 

  484.         param.portCout = (CarlaEngineControlPort*)x_client->addPort(CarlaEnginePortTypeControl, portName, false);

  485. 

  486.         // ----------------------

  487.         j = FluidSynthReverbOnOff;

  488.         param.data[j].index  = j;

  489.         param.data[j].rindex = j;

  490.         param.data[j].type   = PARAMETER_INPUT;

  491.         param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_AUTOMABLE | PARAMETER_IS_BOOLEAN;

  492.         param.data[j].midiChannel = 0;

  493.         param.data[j].midiCC = -1;

  494.         param.ranges[j].min = 0.0;

  495.         param.ranges[j].max = 1.0;

  496.         param.ranges[j].def = 0.0;

  497.         param.ranges[j].step = 1.0;

  498.         param.ranges[j].stepSmall = 1.0;

  499.         param.ranges[j].stepLarge = 1.0;

  500.         param_buffers[j] = param.ranges[j].def;

  501. 

  502.         // ----------------------

  503.         j = FluidSynthReverbRoomSize;

  504.         param.data[j].index  = j;

  505.         param.data[j].rindex = j;

  506.         param.data[j].type   = PARAMETER_INPUT;

  507.         param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_AUTOMABLE;

  508.         param.data[j].midiChannel = 0;

  509.         param.data[j].midiCC = -1;

  510.         param.ranges[j].min = 0.0;

  511.         param.ranges[j].max = 1.2;

  512.         param.ranges[j].def = FLUID_REVERB_DEFAULT_ROOMSIZE;

  513.         param.ranges[j].step = 0.01;

  514.         param.ranges[j].stepSmall = 0.0001;

  515.         param.ranges[j].stepLarge = 0.1;

  516.         param_buffers[j] = param.ranges[j].def;

  517. 

  518.         // ----------------------

  519.         j = FluidSynthReverbDamp;

  520.         param.data[j].index  = j;

  521.         param.data[j].rindex = j;

  522.         param.data[j].type   = PARAMETER_INPUT;

  523.         param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_AUTOMABLE;

  524.         param.data[j].midiChannel = 0;

  525.         param.data[j].midiCC = -1;

  526.         param.ranges[j].min = 0.0;

  527.         param.ranges[j].max = 1.0;

  528.         param.ranges[j].def = FLUID_REVERB_DEFAULT_DAMP;

  529.         param.ranges[j].step = 0.01;

  530.         param.ranges[j].stepSmall = 0.0001;

  531.         param.ranges[j].stepLarge = 0.1;

  532.         param_buffers[j] = param.ranges[j].def;

  533. 

  534.         // ----------------------

  535.         j = FluidSynthReverbLevel;

  536.         param.data[j].index  = j;

  537.         param.data[j].rindex = j;

  538.         param.data[j].type   = PARAMETER_INPUT;

  539.         param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_AUTOMABLE;

  540.         param.data[j].midiChannel = 0;

  541.         param.data[j].midiCC = MIDI_CONTROL_REVERB_SEND_LEVEL;

  542.         param.ranges[j].min = 0.0;

  543.         param.ranges[j].max = 1.0;

  544.         param.ranges[j].def = FLUID_REVERB_DEFAULT_LEVEL;

  545.         param.ranges[j].step = 0.01;

  546.         param.ranges[j].stepSmall = 0.0001;

  547.         param.ranges[j].stepLarge = 0.1;

  548.         param_buffers[j] = param.ranges[j].def;

  549. 

  550.         // ----------------------

  551.         j = FluidSynthReverbWidth;

  552.         param.data[j].index  = j;

  553.         param.data[j].rindex = j;

  554.         param.data[j].type   = PARAMETER_INPUT;

  555.         param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_AUTOMABLE;

  556.         param.data[j].midiChannel = 0;

  557.         param.data[j].midiCC = -1;

  558.         param.ranges[j].min = 0.0;

  559.         param.ranges[j].max = 10.0; // should be 100, but that sounds too much

  560.         param.ranges[j].def = FLUID_REVERB_DEFAULT_WIDTH;

  561.         param.ranges[j].step = 0.01;

  562.         param.ranges[j].stepSmall = 0.0001;

  563.         param.ranges[j].stepLarge = 0.1;

  564.         param_buffers[j] = param.ranges[j].def;

  565. 

  566.         // ----------------------

  567.         j = FluidSynthChorusOnOff;

  568.         param.data[j].index  = j;

  569.         param.data[j].rindex = j;

  570.         param.data[j].type   = PARAMETER_INPUT;

  571.         param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_BOOLEAN;

  572.         param.data[j].midiChannel = 0;

  573.         param.data[j].midiCC = -1;

  574.         param.ranges[j].min = 0.0;

  575.         param.ranges[j].max = 1.0;

  576.         param.ranges[j].def = 0.0;

  577.         param.ranges[j].step = 1.0;

  578.         param.ranges[j].stepSmall = 1.0;

  579.         param.ranges[j].stepLarge = 1.0;

  580.         param_buffers[j] = param.ranges[j].def;

  581. 

  582.         // ----------------------

  583.         j = FluidSynthChorusNr;

  584.         param.data[j].index  = j;

  585.         param.data[j].rindex = j;

  586.         param.data[j].type   = PARAMETER_INPUT;

  587.         param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_INTEGER;

  588.         param.data[j].midiChannel = 0;

  589.         param.data[j].midiCC = -1;

  590.         param.ranges[j].min = 0.0;

  591.         param.ranges[j].max = 99.0;

  592.         param.ranges[j].def = FLUID_CHORUS_DEFAULT_N;

  593.         param.ranges[j].step = 1.0;

  594.         param.ranges[j].stepSmall = 1.0;

  595.         param.ranges[j].stepLarge = 10.0;

  596.         param_buffers[j] = param.ranges[j].def;

  597. 

  598.         // ----------------------

  599.         j = FluidSynthChorusLevel;

  600.         param.data[j].index  = j;

  601.         param.data[j].rindex = j;

  602.         param.data[j].type   = PARAMETER_INPUT;

  603.         param.data[j].hints  = PARAMETER_IS_ENABLED;

  604.         param.data[j].midiChannel = 0;

  605.         param.data[j].midiCC = 0; //MIDI_CONTROL_CHORUS_SEND_LEVEL;

  606.         param.ranges[j].min = 0.0;

  607.         param.ranges[j].max = 10.0;

  608.         param.ranges[j].def = FLUID_CHORUS_DEFAULT_LEVEL;

  609.         param.ranges[j].step = 0.01;

  610.         param.ranges[j].stepSmall = 0.0001;

  611.         param.ranges[j].stepLarge = 0.1;

  612.         param_buffers[j] = param.ranges[j].def;

  613. 

  614.         // ----------------------

  615.         j = FluidSynthChorusSpeedHz;

  616.         param.data[j].index  = j;

  617.         param.data[j].rindex = j;

  618.         param.data[j].type   = PARAMETER_INPUT;

  619.         param.data[j].hints  = PARAMETER_IS_ENABLED;

  620.         param.data[j].midiChannel = 0;

  621.         param.data[j].midiCC = -1;

  622.         param.ranges[j].min = 0.29;

  623.         param.ranges[j].max = 5.0;

  624.         param.ranges[j].def = FLUID_CHORUS_DEFAULT_SPEED;

  625.         param.ranges[j].step = 0.01;

  626.         param.ranges[j].stepSmall = 0.0001;

  627.         param.ranges[j].stepLarge = 0.1;

  628.         param_buffers[j] = param.ranges[j].def;

  629. 

  630.         // ----------------------

  631.         j = FluidSynthChorusDepthMs;

  632.         param.data[j].index  = j;

  633.         param.data[j].rindex = j;

  634.         param.data[j].type   = PARAMETER_INPUT;

  635.         param.data[j].hints  = PARAMETER_IS_ENABLED;

  636.         param.data[j].midiChannel = 0;

  637.         param.data[j].midiCC = -1;

  638.         param.ranges[j].min = 0.0;

  639.         param.ranges[j].max = 2048000.0 / x_engine->getSampleRate();

  640.         param.ranges[j].def = FLUID_CHORUS_DEFAULT_DEPTH;

  641.         param.ranges[j].step = 0.01;

  642.         param.ranges[j].stepSmall = 0.0001;

  643.         param.ranges[j].stepLarge = 0.1;

  644.         param_buffers[j] = param.ranges[j].def;

  645. 

  646.         // ----------------------

  647.         j = FluidSynthChorusType;

  648.         param.data[j].index  = j;

  649.         param.data[j].rindex = j;

  650.         param.data[j].type   = PARAMETER_INPUT;

  651.         param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_INTEGER | PARAMETER_USES_SCALEPOINTS;

  652.         param.data[j].midiChannel = 0;

  653.         param.data[j].midiCC = -1;

  654.         param.ranges[j].min = FLUID_CHORUS_MOD_SINE;

  655.         param.ranges[j].max = FLUID_CHORUS_MOD_TRIANGLE;

  656.         param.ranges[j].def = FLUID_CHORUS_DEFAULT_TYPE;

  657.         param.ranges[j].step = 1;

  658.         param.ranges[j].stepSmall = 1;

  659.         param.ranges[j].stepLarge = 1;

  660.         param_buffers[j] = param.ranges[j].def;

  661. 

  662.         // ----------------------

  663.         j = FluidSynthPolyphony;

  664.         param.data[j].index  = j;

  665.         param.data[j].rindex = j;

  666.         param.data[j].type   = PARAMETER_INPUT;

  667.         param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_INTEGER;

  668.         param.data[j].midiChannel = 0;

  669.         param.data[j].midiCC = -1;

  670.         param.ranges[j].min = 1;

  671.         param.ranges[j].max = 512; // max theoric is 65535

  672.         param.ranges[j].def = fluid_synth_get_polyphony(f_synth);

  673.         param.ranges[j].step = 1;

  674.         param.ranges[j].stepSmall = 1;

  675.         param.ranges[j].stepLarge = 10;

  676.         param_buffers[j] = param.ranges[j].def;

  677. 

  678.         // ----------------------

  679.         j = FluidSynthInterpolation;

  680.         param.data[j].index  = j;

  681.         param.data[j].rindex = j;

  682.         param.data[j].type   = PARAMETER_INPUT;

  683.         param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_INTEGER | PARAMETER_USES_SCALEPOINTS;

  684.         param.data[j].midiChannel = 0;

  685.         param.data[j].midiCC = -1;

  686.         param.ranges[j].min = FLUID_INTERP_NONE;

  687.         param.ranges[j].max = FLUID_INTERP_HIGHEST;

  688.         param.ranges[j].def = FLUID_INTERP_DEFAULT;

  689.         param.ranges[j].step = 1;

  690.         param.ranges[j].stepSmall = 1;

  691.         param.ranges[j].stepLarge = 1;

  692.         param_buffers[j] = param.ranges[j].def;

  693. 

  694.         // ----------------------

  695.         j = FluidSynthVoiceCount;

  696.         param.data[j].index  = j;

  697.         param.data[j].rindex = j;

  698.         param.data[j].type   = PARAMETER_OUTPUT;

  699.         param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_AUTOMABLE | PARAMETER_IS_INTEGER;

  700.         param.data[j].midiChannel = 0;

  701.         param.data[j].midiCC = -1;

  702.         param.ranges[j].min = 0;

  703.         param.ranges[j].max = 65535;

  704.         param.ranges[j].def = 0;

  705.         param.ranges[j].step = 1;

  706.         param.ranges[j].stepSmall = 1;

  707.         param.ranges[j].stepLarge = 1;

  708.         param_buffers[j] = param.ranges[j].def;

  709. 

  710.         // ---------------------------------------

  711. 

  712.         aout.count  = aouts;

  713.         param.count = params;

  714. 

  715.         // plugin checks

  716.         m_hints &= ~(PLUGIN_IS_SYNTH | PLUGIN_USES_CHUNKS | PLUGIN_CAN_DRYWET | PLUGIN_CAN_VOLUME | PLUGIN_CAN_BALANCE);

  717. 

  718.         m_hints |= PLUGIN_IS_SYNTH;

  719.         m_hints |= PLUGIN_CAN_VOLUME;

  720.         m_hints |= PLUGIN_CAN_BALANCE;

  721. 

  722.         reloadPrograms(true);

  723. 

  724.         x_client->activate();

  725. 

  726.         qDebug("FluidSynthPlugin::reload() - end");

  727.     }

  728. 

  729.     void reloadPrograms(bool init)

  730.     {

  731.         qDebug("FluidSynthPlugin::reloadPrograms(%s)", bool2str(init));

  732. 

  733.         // Delete old programs

  734.         if (midiprog.count > 0)

  735.         {

  736.             for (uint32_t i=0; i < midiprog.count; i++)

  737.                 free((void*)midiprog.data[i].name);

  738. 

  739.             delete[] midiprog.data;

  740.         }

  741. 

  742.         midiprog.count = 0;

  743.         midiprog.data  = nullptr;

  744. 

  745.         // Query new programs

  746.         fluid_sfont_t* f_sfont;

  747.         fluid_preset_t f_preset;

  748. 

  749.         f_sfont = fluid_synth_get_sfont_by_id(f_synth, f_id);

  750. 

  751.         // initial check to know how much midi-programs we have

  752.         f_sfont->iteration_start(f_sfont);

  753.         while (f_sfont->iteration_next(f_sfont, &f_preset))

  754.             midiprog.count += 1;

  755. 

  756.         if (midiprog.count > 0)

  757.             midiprog.data = new midi_program_t [midiprog.count];

  758. 

  759.         // Update data

  760.         uint32_t i = 0;

  761.         f_sfont->iteration_start(f_sfont);

  762.         while (f_sfont->iteration_next(f_sfont, &f_preset))

  763.         {

  764.             Q_ASSERT(i < midiprog.count);

  765.             midiprog.data[i].bank    = f_preset.get_banknum(&f_preset);

  766.             midiprog.data[i].program = f_preset.get_num(&f_preset);

  767.             midiprog.data[i].name    = strdup(f_preset.get_name(&f_preset));

  768.             i++;

  769.         }

  770. 

  771.         //f_sfont->free(f_sfont);

  772. 

  773. #ifndef BUILD_BRIDGE

  774.         // Update OSC Names

  775.         //osc_global_send_set_midi_program_count(m_id, midiprog.count);

  776. 

  777.         //for (i=0; i < midiprog.count; i++)

  778.         //    osc_global_send_set_midi_program_data(m_id, i, midiprog.data[i].bank, midiprog.data[i].program, midiprog.data[i].name);

  779. 

  780.         x_engine->callback(CALLBACK_RELOAD_PROGRAMS, m_id, 0, 0, 0.0);

  781. #endif

  782. 

  783.         if (init)

  784.         {

  785.             fluid_synth_program_reset(f_synth);

  786. 

  787.             if (midiprog.count > 0)

  788.             {

  789.                 for (i=0; i < 16 && i != 9; i++)

  790.                 {

  791.                     fluid_synth_program_select(f_synth, i, f_id, midiprog.data[0].bank, midiprog.data[0].program);

  792. #ifdef FLUIDSYNTH_VERSION_NEW_API

  793.                     fluid_synth_set_channel_type(f_synth, i, CHANNEL_TYPE_MELODIC);

  794. #endif

  795.                 }

  796. 

  797.                 fluid_synth_program_select(f_synth, 9, f_id, 128, 0);

  798. #ifdef FLUIDSYNTH_VERSION_NEW_API

  799.                 fluid_synth_set_channel_type(f_synth, 9, CHANNEL_TYPE_DRUM);

  800. #endif

  801. 

  802.                 setMidiProgram(0, false, false, false, true);

  803.             }

  804.         }

  805.     }

  806. 

  807.     // -------------------------------------------------------------------

  808.     // Plugin processing

  809. 

  810.     void process(float**, float** outBuffer, uint32_t frames, uint32_t framesOffset)

  811.     {

  812.         uint32_t i, k;

  813.         uint32_t midiEventCount = 0;

  814. 

  815.         double aouts_peak_tmp[2] = { 0.0 };

  816. 

  817.         CARLA_PROCESS_CONTINUE_CHECK;

  818. 

  819.         // --------------------------------------------------------------------------------------------------------

  820.         // Parameters Input [Automation]

  821. 

  822.         if (m_active && m_activeBefore)

  823.         {

  824.             bool allNotesOffSent = false;

  825. 

  826.             const CarlaEngineControlEvent* cinEvent;

  827.             uint32_t time, nEvents = param.portCin->getEventCount();

  828. 

  829.             unsigned char nextBankIds[16] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 0, 0, 0, 0, 0, 0 };

  830. 

  831.             if (midiprog.current >= 0 && midiprog.count > 0 && cin_channel >= 0 && cin_channel < 16)

  832.                 nextBankIds[cin_channel] = midiprog.data[midiprog.current].bank;

  833. 

  834.             for (i=0; i < nEvents; i++)

  835.             {

  836.                 cinEvent = param.portCin->getEvent(i);

  837. 

  838.                 if (! cinEvent)

  839.                     continue;

  840. 

  841.                 time = cinEvent->time - framesOffset;

  842. 

  843.                 if (time >= frames)

  844.                     continue;

  845. 

  846.                 // Control change

  847.                 switch (cinEvent->type)

  848.                 {

  849.                 case CarlaEngineEventNull:

  850.                     break;

  851. 

  852.                 case CarlaEngineEventControlChange:

  853.                 {

  854.                     double value;

  855. 

  856.                     // Control backend stuff

  857.                     if (cinEvent->channel == cin_channel)

  858.                     {

  859.                         if (MIDI_IS_CONTROL_BREATH_CONTROLLER(cinEvent->controller) && (m_hints & PLUGIN_CAN_DRYWET) > 0)

  860.                         {

  861.                             value = cinEvent->value;

  862.                             setDryWet(value, false, false);

  863.                             postponeEvent(PluginPostEventParameterChange, PARAMETER_DRYWET, 0, value);

  864.                             continue;

  865.                         }

  866. 

  867.                         if (MIDI_IS_CONTROL_CHANNEL_VOLUME(cinEvent->controller) && (m_hints & PLUGIN_CAN_VOLUME) > 0)

  868.                         {

  869.                             value = cinEvent->value*127/100;

  870.                             setVolume(value, false, false);

  871.                             postponeEvent(PluginPostEventParameterChange, PARAMETER_VOLUME, 0, value);

  872.                             continue;

  873.                         }

  874. 

  875.                         if (MIDI_IS_CONTROL_BALANCE(cinEvent->controller) && (m_hints & PLUGIN_CAN_BALANCE) > 0)

  876.                         {

  877.                             double left, right;

  878.                             value = cinEvent->value/0.5 - 1.0;

  879. 

  880.                             if (value < 0)

  881.                             {

  882.                                 left  = -1.0;

  883.                                 right = (value*2)+1.0;

  884.                             }

  885.                             else if (value > 0)

  886.                             {

  887.                                 left  = (value*2)-1.0;

  888.                                 right = 1.0;

  889.                             }

  890.                             else

  891.                             {

  892.                                 left  = -1.0;

  893.                                 right = 1.0;

  894.                             }

  895. 

  896.                             setBalanceLeft(left, false, false);

  897.                             setBalanceRight(right, false, false);

  898.                             postponeEvent(PluginPostEventParameterChange, PARAMETER_BALANCE_LEFT, 0, left);

  899.                             postponeEvent(PluginPostEventParameterChange, PARAMETER_BALANCE_RIGHT, 0, right);

  900.                             continue;

  901.                         }

  902.                     }

  903. 

  904.                     // Control plugin parameters

  905.                     for (k=0; k < param.count; k++)

  906.                     {

  907.                         if (param.data[k].midiChannel != cinEvent->channel)

  908.                             continue;

  909.                         if (param.data[k].midiCC != cinEvent->controller)

  910.                             continue;

  911.                         if (param.data[k].type != PARAMETER_INPUT)

  912.                             continue;

  913. 

  914.                         if (param.data[k].hints & PARAMETER_IS_AUTOMABLE)

  915.                         {

  916.                             if (param.data[k].hints & PARAMETER_IS_BOOLEAN)

  917.                             {

  918.                                 value = cinEvent->value < 0.5 ? param.ranges[k].min : param.ranges[k].max;

  919.                             }

  920.                             else

  921.                             {

  922.                                 value = cinEvent->value * (param.ranges[k].max - param.ranges[k].min) + param.ranges[k].min;

  923. 

  924.                                 if (param.data[k].hints & PARAMETER_IS_INTEGER)

  925.                                     value = rint(value);

  926.                             }

  927. 

  928.                             setParameterValue(k, value, false, false, false);

  929.                             postponeEvent(PluginPostEventParameterChange, k, 0, value);

  930.                         }

  931.                     }

  932. 

  933.                     break;

  934.                 }

  935. 

  936.                 case CarlaEngineEventMidiBankChange:

  937.                     if (cinEvent->channel < 16)

  938.                         nextBankIds[cinEvent->channel] = rint(cinEvent->value);

  939.                     break;

  940. 

  941.                 case CarlaEngineEventMidiProgramChange:

  942.                     if (cinEvent->channel < 16)

  943.                     {

  944.                         uint32_t bankId = nextBankIds[cinEvent->channel];

  945.                         uint32_t progId = rint(cinEvent->value);

  946. 

  947.                         for (k=0; k < midiprog.count; k++)

  948.                         {

  949.                             if (midiprog.data[k].bank == bankId && midiprog.data[k].program == progId)

  950.                             {

  951.                                 if (cinEvent->channel == cin_channel)

  952.                                 {

  953.                                     setMidiProgram(k, false, false, false, false);

  954.                                     postponeEvent(PluginPostEventMidiProgramChange, k, 0, 0.0);

  955.                                 }

  956.                                 else

  957.                                     fluid_synth_program_select(f_synth, cinEvent->channel, f_id, bankId, progId);

  958. 

  959.                                 break;

  960.                             }

  961.                         }

  962.                     }

  963.                     break;

  964. 

  965.                 case CarlaEngineEventAllSoundOff:

  966.                     if (cinEvent->channel == cin_channel)

  967.                     {

  968.                         if (! allNotesOffSent)

  969.                             sendMidiAllNotesOff();

  970. 

  971.                         allNotesOffSent = true;

  972. 

  973. #ifdef FLUIDSYNTH_VERSION_NEW_API

  974.                         fluid_synth_all_notes_off(f_synth, cin_channel);

  975.                         fluid_synth_all_sounds_off(f_synth, cin_channel);

  976.                     }

  977.                     else if (cinEvent->channel < 16)

  978.                     {

  979.                         fluid_synth_all_notes_off(f_synth, cinEvent->channel);

  980.                         fluid_synth_all_sounds_off(f_synth, cinEvent->channel);

  981. #endif

  982.                     }

  983.                     break;

  984. 

  985.                 case CarlaEngineEventAllNotesOff:

  986.                     if (cinEvent->channel == cin_channel)

  987.                     {

  988.                         if (! allNotesOffSent)

  989.                             sendMidiAllNotesOff();

  990. 

  991.                         allNotesOffSent = true;

  992. 

  993. #ifdef FLUIDSYNTH_VERSION_NEW_API

  994.                         fluid_synth_all_notes_off(f_synth, cin_channel);

  995.                     }

  996.                     else if (cinEvent->channel < 16)

  997.                     {

  998.                         fluid_synth_all_notes_off(f_synth, cinEvent->channel);

  999. #endif

  1000.                     }

  1001.                     break;

  1002.                 }

  1003.             }

  1004.         } // End of Parameters Input

  1005. 

  1006.         CARLA_PROCESS_CONTINUE_CHECK;

  1007. 

  1008.         // --------------------------------------------------------------------------------------------------------

  1009.         // MIDI Input (External)

  1010. 

  1011.         if (cin_channel >= 0 && cin_channel < 16 && m_active && m_activeBefore)

  1012.         {

  1013.             engineMidiLock();

  1014. 

  1015.             for (i=0; i < MAX_MIDI_EVENTS && midiEventCount < MAX_MIDI_EVENTS; i++)

  1016.             {

  1017.                 if (extMidiNotes[i].channel < 0)

  1018.                     break;

  1019. 

  1020.                 if (extMidiNotes[i].velo)

  1021.                     fluid_synth_noteon(f_synth, cin_channel, extMidiNotes[i].note, extMidiNotes[i].velo);

  1022.                 else

  1023.                     fluid_synth_noteoff(f_synth, cin_channel, extMidiNotes[i].note);

  1024. 

  1025.                 extMidiNotes[i].channel = -1;

  1026.                 midiEventCount += 1;

  1027.             }

  1028. 

  1029.             engineMidiUnlock();

  1030. 

  1031.         } // End of MIDI Input (External)

  1032. 

  1033.         CARLA_PROCESS_CONTINUE_CHECK;

  1034. 

  1035.         // --------------------------------------------------------------------------------------------------------

  1036.         // MIDI Input (System)

  1037. 

  1038.         if (m_active && m_activeBefore)

  1039.         {

  1040.             const CarlaEngineMidiEvent* minEvent;

  1041.             uint32_t time, nEvents = midi.portMin->getEventCount();

  1042. 

  1043.             for (i=0; i < nEvents && midiEventCount < MAX_MIDI_EVENTS; i++)

  1044.             {

  1045.                 minEvent = midi.portMin->getEvent(i);

  1046. 

  1047.                 if (! minEvent)

  1048.                     continue;

  1049. 

  1050.                 time = minEvent->time - framesOffset;

  1051. 

  1052.                 if (time >= frames)

  1053.                     continue;

  1054. 

  1055.                 uint8_t status  = minEvent->data[0];

  1056.                 uint8_t channel = status & 0x0F;

  1057. 

  1058.                 // Fix bad note-off

  1059.                 if (MIDI_IS_STATUS_NOTE_ON(status) && minEvent->data[2] == 0)

  1060.                     status -= 0x10;

  1061. 

  1062.                 if (MIDI_IS_STATUS_NOTE_OFF(status))

  1063.                 {

  1064.                     uint8_t note = minEvent->data[1];

  1065. 

  1066.                     fluid_synth_noteoff(f_synth, channel, note);

  1067. 

  1068.                     if (channel == cin_channel)

  1069.                         postponeEvent(PluginPostEventNoteOff, channel, note, 0.0);

  1070.                 }

  1071.                 else if (MIDI_IS_STATUS_NOTE_ON(status))

  1072.                 {

  1073.                     uint8_t note = minEvent->data[1];

  1074.                     uint8_t velo = minEvent->data[2];

  1075. 

  1076.                     fluid_synth_noteon(f_synth, channel, note, velo);

  1077. 

  1078.                     if (channel == cin_channel)

  1079.                         postponeEvent(PluginPostEventNoteOn, channel, note, velo);

  1080.                 }

  1081.                 else if (MIDI_IS_STATUS_AFTERTOUCH(status))

  1082.                 {

  1083.                     uint8_t pressure = minEvent->data[1];

  1084. 

  1085.                     fluid_synth_channel_pressure(f_synth, channel, pressure);

  1086.                 }

  1087.                 else if (MIDI_IS_STATUS_PITCH_WHEEL_CONTROL(status))

  1088.                 {

  1089.                     uint8_t lsb = minEvent->data[1];

  1090.                     uint8_t msb = minEvent->data[2];

  1091. 

  1092.                     fluid_synth_pitch_bend(f_synth, channel, (msb << 7) | lsb);

  1093.                 }

  1094.                 else

  1095.                     continue;

  1096. 

  1097.                 midiEventCount += 1;

  1098.             }

  1099.         } // End of MIDI Input (System)

  1100. 

  1101.         CARLA_PROCESS_CONTINUE_CHECK;

  1102. 

  1103.         // --------------------------------------------------------------------------------------------------------

  1104.         // Plugin processing

  1105. 

  1106.         if (m_active)

  1107.         {

  1108.             if (! m_activeBefore)

  1109.             {

  1110.                 if (cin_channel >= 0 && cin_channel < 16)

  1111.                 {

  1112.                     fluid_synth_cc(f_synth, cin_channel, MIDI_CONTROL_ALL_SOUND_OFF, 0);

  1113.                     fluid_synth_cc(f_synth, cin_channel, MIDI_CONTROL_ALL_NOTES_OFF, 0);

  1114.                 }

  1115. 

  1116. #ifdef FLUIDSYNTH_VERSION_NEW_API

  1117.                 for (i=0; i < 16; i++)

  1118.                 {

  1119.                     fluid_synth_all_notes_off(f_synth, i);

  1120.                     fluid_synth_all_sounds_off(f_synth, i);

  1121.                 }

  1122. #endif

  1123.             }

  1124. 

  1125.             fluid_synth_process(f_synth, frames, 0, nullptr, 2, outBuffer);

  1126.         }

  1127. 

  1128.         CARLA_PROCESS_CONTINUE_CHECK;

  1129. 

  1130.         // --------------------------------------------------------------------------------------------------------

  1131.         // Post-processing (volume and balance)

  1132. 

  1133.         if (m_active)

  1134.         {

  1135.             bool do_balance = (x_bal_left != -1.0 || x_bal_right != 1.0);

  1136. 

  1137.             double bal_rangeL, bal_rangeR;

  1138.             float oldBufLeft[do_balance ? frames : 0];

  1139. 

  1140.             for (i=0; i < aout.count; i++)

  1141.             {

  1142.                 // Volume, using fluidsynth internals

  1143.                 fluid_synth_set_gain(f_synth, x_vol);

  1144. 

  1145.                 // Balance

  1146.                 if (do_balance)

  1147.                 {

  1148.                     if (i%2 == 0)

  1149.                         memcpy(&oldBufLeft, outBuffer[i], sizeof(float)*frames);

  1150. 

  1151.                     bal_rangeL = (x_bal_left+1.0)/2;

  1152.                     bal_rangeR = (x_bal_right+1.0)/2;

  1153. 

  1154.                     for (k=0; k < frames; k++)

  1155.                     {

  1156.                         if (i%2 == 0)

  1157.                         {

  1158.                             // left output

  1159.                             outBuffer[i][k]  = oldBufLeft[k]*(1.0-bal_rangeL);

  1160.                             outBuffer[i][k] += outBuffer[i+1][k]*(1.0-bal_rangeR);

  1161.                         }

  1162.                         else

  1163.                         {

  1164.                             // right

  1165.                             outBuffer[i][k]  = outBuffer[i][k]*bal_rangeR;

  1166.                             outBuffer[i][k] += oldBufLeft[k]*bal_rangeL;

  1167.                         }

  1168.                     }

  1169.                 }

  1170. 

  1171.                 // Output VU

  1172.                 for (k=0; i < 2 && k < frames; k++)

  1173.                 {

  1174.                     if (abs(outBuffer[i][k]) > aouts_peak_tmp[i])

  1175.                         aouts_peak_tmp[i] = abs(outBuffer[i][k]);

  1176.                 }

  1177.             }

  1178.         }

  1179.         else

  1180.         {

  1181.             // disable any output sound if not active

  1182.             for (i=0; i < aout.count; i++)

  1183.                 memset(outBuffer[i], 0.0f, sizeof(float)*frames);

  1184. 

  1185.             aouts_peak_tmp[0] = 0.0;

  1186.             aouts_peak_tmp[1] = 0.0;

  1187. 

  1188.         } // End of Post-processing

  1189. 

  1190.         CARLA_PROCESS_CONTINUE_CHECK;

  1191. 

  1192.         // --------------------------------------------------------------------------------------------------------

  1193.         // Control Output

  1194. 

  1195.         if (m_active)

  1196.         {

  1197.             k = FluidSynthVoiceCount;

  1198.             param_buffers[k] = fluid_synth_get_active_voice_count(f_synth);

  1199.             fixParameterValue(param_buffers[k], param.ranges[k]);

  1200. 

  1201.             if (param.data[k].midiCC > 0)

  1202.             {

  1203.                 double value = (param_buffers[k] - param.ranges[k].min) / (param.ranges[k].max - param.ranges[k].min);

  1204.                 param.portCout->writeEvent(CarlaEngineEventControlChange, framesOffset, param.data[k].midiChannel, param.data[k].midiCC, value);

  1205.             }

  1206.         } // End of Control Output

  1207. 

  1208.         CARLA_PROCESS_CONTINUE_CHECK;

  1209. 

  1210.         // --------------------------------------------------------------------------------------------------------

  1211.         // Peak Values

  1212. 

  1213.         x_engine->setOutputPeak(m_id, 0, aouts_peak_tmp[0]);

  1214.         x_engine->setOutputPeak(m_id, 1, aouts_peak_tmp[1]);

  1215. 

  1216.         m_activeBefore = m_active;

  1217.     }

  1218. 

  1219.     // -------------------------------------------------------------------

  1220. 

  1221.     bool init(const char* const filename, const char* const name, const char* const label)

  1222.     {

  1223.         // ---------------------------------------------------------------

  1224.         // open soundfont

  1225. 

  1226.         f_id = fluid_synth_sfload(f_synth, filename, 0);

  1227. 

  1228.         if (f_id < 0)

  1229.         {

  1230.             setLastError("Failed to load SoundFont file");

  1231.             return false;

  1232.         }

  1233. 

  1234.         // ---------------------------------------------------------------

  1235.         // get info

  1236. 

  1237.         m_filename = strdup(filename);

  1238.         m_label    = strdup(label);

  1239. 

  1240.         if (name)

  1241.             m_name = x_engine->getUniqueName(name);

  1242.         else

  1243.             m_name = x_engine->getUniqueName(label);

  1244. 

  1245.         // ---------------------------------------------------------------

  1246.         // register client

  1247. 

  1248.         x_client = x_engine->addClient(this);

  1249. 

  1250.         if (! x_client->isOk())

  1251.         {

  1252.             setLastError("Failed to register plugin client");

  1253.             return false;

  1254.         }

  1255. 

  1256.         return true;

  1257.     }

  1258. 

  1259. private:

  1260.     enum FluidSynthInputParameters {

  1261.         FluidSynthReverbOnOff    = 0,

  1262.         FluidSynthReverbRoomSize = 1,

  1263.         FluidSynthReverbDamp     = 2,

  1264.         FluidSynthReverbLevel    = 3,

  1265.         FluidSynthReverbWidth    = 4,

  1266.         FluidSynthChorusOnOff    = 5,

  1267.         FluidSynthChorusNr       = 6,

  1268.         FluidSynthChorusLevel    = 7,

  1269.         FluidSynthChorusSpeedHz  = 8,

  1270.         FluidSynthChorusDepthMs  = 9,

  1271.         FluidSynthChorusType     = 10,

  1272.         FluidSynthPolyphony      = 11,

  1273.         FluidSynthInterpolation  = 12,

  1274.         FluidSynthVoiceCount     = 13,

  1275.         FluidSynthParametersMax  = 14

  1276.     };

  1277. 

  1278.     fluid_settings_t* f_settings;

  1279.     fluid_synth_t* f_synth;

  1280.     int f_id;

  1281. 

  1282.     double param_buffers[FluidSynthParametersMax];

  1283.     const char* m_label;

  1284. };

  1285. #endif // WANT_FLUIDSYNTH

  1286. 

  1287. CarlaPlugin* CarlaPlugin::newSF2(const initializer& init)

  1288. {

  1289.     qDebug("CarlaPlugin::newSF2(%p, \"%s\", \"%s\", \"%s\")", init.engine, init.filename, init.name, init.label);

  1290. 

  1291. #ifdef WANT_FLUIDSYNTH

  1292.     short id = init.engine->getNewPluginId();

  1293. 

  1294.     if (id < 0)

  1295.     {

  1296.         setLastError("Maximum number of plugins reached");

  1297.         return nullptr;

  1298.     }

  1299. 

  1300.     if (! fluid_is_soundfont(init.filename))

  1301.     {

  1302.         setLastError("Requested file is not a valid SoundFont");

  1303.         return nullptr;

  1304.     }

  1305. 

  1306.     FluidSynthPlugin* const plugin = new FluidSynthPlugin(init.engine, id);

  1307. 

  1308.     if (! plugin->init(init.filename, init.name, init.label))

  1309.     {

  1310.         delete plugin;

  1311.         return nullptr;

  1312.     }

  1313. 

  1314.     plugin->reload();

  1315.     plugin->registerToOsc();

  1316. 

  1317.     return plugin;

  1318. #else

  1319.     setLastError("fluidsynth support not available");

  1320.     return nullptr;

  1321. #endif

  1322. }

  1323. 

  1324. /**@}*/

  1325. 

  1326. CARLA_BACKEND_END_NAMESPACE