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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. #ifdef WANT_FLUIDSYNTH

  33. 

  34. /*!

  35.  * @defgroup CarlaBackendFluidSynthPlugin Carla Backend FluidSynth Plugin

  36.  *

  37.  * The Carla Backend FluidSynth Plugin.\n

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

  39.  * @{

  40.  */

  41. 

  42. class FluidSynthPlugin : public CarlaPlugin

  43. {

  44. public:

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

  46.     {

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

  48. 

  49.         m_type  = PLUGIN_SF2;

  50.         m_label = nullptr;

  51. 

  52.         // create settings

  53.         f_settings = new_fluid_settings();

  54. 

  55.         // define settings

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

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

  58. 

  59.         // create synth

  60.         f_synth = new_fluid_synth(f_settings);

  61. 

  62. #ifdef FLUIDSYNTH_VERSION_NEW_API

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

  64. #endif

  65. 

  66.         // set default values

  67.         fluid_synth_set_reverb_on(f_synth, 0);

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

  69. 

  70.         fluid_synth_set_chorus_on(f_synth, 0);

  71.         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);

  72. 

  73.         fluid_synth_set_polyphony(f_synth, 64);

  74. 

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

  76.             fluid_synth_set_interp_method(f_synth, i, FLUID_INTERP_DEFAULT);

  77.     }

  78. 

  79.     ~FluidSynthPlugin()

  80.     {

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

  82. 

  83.         if (m_label)

  84.             free((void*)m_label);

  85. 

  86.         delete_fluid_synth(f_synth);

  87.         delete_fluid_settings(f_settings);

  88.     }

  89. 

  90.     // -------------------------------------------------------------------

  91.     // Information (base)

  92. 

  93.     PluginCategory category()

  94.     {

  95.         return PLUGIN_CATEGORY_SYNTH;

  96.     }

  97. 

  98.     // -------------------------------------------------------------------

  99.     // Information (count)

  100. 

  101.     uint32_t parameterScalePointCount(uint32_t parameterId)

  102.     {

  103.         Q_ASSERT(parameterId < param.count);

  104. 

  105.         switch (parameterId)

  106.         {

  107.         case FluidSynthChorusType:

  108.             return 2;

  109.         case FluidSynthInterpolation:

  110.             return 4;

  111.         default:

  112.             return 0;

  113.         }

  114.     }

  115. 

  116.     // -------------------------------------------------------------------

  117.     // Information (per-plugin data)

  118. 

  119.     double getParameterValue(uint32_t parameterId)

  120.     {

  121.         Q_ASSERT(parameterId < param.count);

  122.         return param_buffers[parameterId];

  123.     }

  124. 

  125.     double getParameterScalePointValue(uint32_t parameterId, uint32_t scalePointId)

  126.     {

  127.         Q_ASSERT(parameterId < param.count);

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

  129. 

  130.         switch (parameterId)

  131.         {

  132.         case FluidSynthChorusType:

  133.             switch (scalePointId)

  134.             {

  135.             case 0:

  136.                 return FLUID_CHORUS_MOD_SINE;

  137.             case 1:

  138.                 return FLUID_CHORUS_MOD_TRIANGLE;

  139.             default:

  140.                 return FLUID_CHORUS_DEFAULT_TYPE;

  141.             }

  142.         case FluidSynthInterpolation:

  143.             switch (scalePointId)

  144.             {

  145.             case 0:

  146.                 return FLUID_INTERP_NONE;

  147.             case 1:

  148.                 return FLUID_INTERP_LINEAR;

  149.             case 2:

  150.                 return FLUID_INTERP_4THORDER;

  151.             case 3:

  152.                 return FLUID_INTERP_7THORDER;

  153.             default:

  154.                 return FLUID_INTERP_DEFAULT;

  155.             }

  156.         default:

  157.             return 0.0;

  158.         }

  159.     }

  160. 

  161.     void getLabel(char* const strBuf)

  162.     {

  163.         strncpy(strBuf, m_label, STR_MAX);

  164.     }

  165. 

  166.     void getMaker(char* const strBuf)

  167.     {

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

  169.     }

  170. 

  171.     void getCopyright(char* const strBuf)

  172.     {

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

  174.     }

  175. 

  176.     void getRealName(char* const strBuf)

  177.     {

  178.         getLabel(strBuf);

  179.     }

  180. 

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

  182.     {

  183.         Q_ASSERT(parameterId < param.count);

  184. 

  185.         switch (parameterId)

  186.         {

  187.         case FluidSynthReverbOnOff:

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

  189.             break;

  190.         case FluidSynthReverbRoomSize:

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

  192.             break;

  193.         case FluidSynthReverbDamp:

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

  195.             break;

  196.         case FluidSynthReverbLevel:

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

  198.             break;

  199.         case FluidSynthReverbWidth:

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

  201.             break;

  202.         case FluidSynthChorusOnOff:

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

  204.             break;

  205.         case FluidSynthChorusNr:

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

  207.             break;

  208.         case FluidSynthChorusLevel:

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

  210.             break;

  211.         case FluidSynthChorusSpeedHz:

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

  213.             break;

  214.         case FluidSynthChorusDepthMs:

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

  216.             break;

  217.         case FluidSynthChorusType:

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

  219.             break;

  220.         case FluidSynthPolyphony:

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

  222.             break;

  223.         case FluidSynthInterpolation:

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

  225.             break;

  226.         case FluidSynthVoiceCount:

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

  228.             break;

  229.         default:

  230.             *strBuf = 0;

  231.             break;

  232.         }

  233.     }

  234. 

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

  236.     {

  237.         Q_ASSERT(parameterId < param.count);

  238. 

  239.         switch (parameterId)

  240.         {

  241.         case FluidSynthChorusSpeedHz:

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

  243.             break;

  244.         case FluidSynthChorusDepthMs:

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

  246.             break;

  247.         default:

  248.             *strBuf = 0;

  249.             break;

  250.         }

  251.     }

  252. 

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

  254.     {

  255.         Q_ASSERT(parameterId < param.count);

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

  257. 

  258.         switch (parameterId)

  259.         {

  260.         case FluidSynthChorusType:

  261.             switch (scalePointId)

  262.             {

  263.             case 0:

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

  265.                 return;

  266.             case 1:

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

  268.                 return;

  269.             }

  270.         case FluidSynthInterpolation:

  271.             switch (scalePointId)

  272.             {

  273.             case 0:

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

  275.                 return;

  276.             case 1:

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

  278.                 return;

  279.             case 2:

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

  281.                 return;

  282.             case 3:

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

  284.                 return;

  285.             }

  286.         }

  287. 

  288.         *strBuf = 0;

  289.     }

  290. 

  291.     // -------------------------------------------------------------------

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

  293. 

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

  295.     {

  296.         Q_ASSERT(parameterId < param.count);

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

  298. 

  299.         switch (parameterId)

  300.         {

  301.         case FluidSynthReverbOnOff:

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

  303.             fluid_synth_set_reverb_on(f_synth, value);

  304.             break;

  305. 

  306.         case FluidSynthReverbRoomSize:

  307.         case FluidSynthReverbDamp:

  308.         case FluidSynthReverbLevel:

  309.         case FluidSynthReverbWidth:

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

  311.             break;

  312. 

  313.         case FluidSynthChorusOnOff:

  314.         {

  315.             const ScopedDisabler m(this, ! x_engine->isOffline());

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

  317.             fluid_synth_set_chorus_on(f_synth, value);

  318.             break;

  319.         }

  320. 

  321.         case FluidSynthChorusNr:

  322.         case FluidSynthChorusLevel:

  323.         case FluidSynthChorusSpeedHz:

  324.         case FluidSynthChorusDepthMs:

  325.         case FluidSynthChorusType:

  326.         {

  327.             const ScopedDisabler m(this, ! x_engine->isOffline());

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

  329.             break;

  330.         }

  331. 

  332.         case FluidSynthPolyphony:

  333.         {

  334.             const ScopedDisabler m(this, ! x_engine->isOffline());

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

  336.             break;

  337.         }

  338. 

  339.         case FluidSynthInterpolation:

  340.         {

  341.             const ScopedDisabler m(this, ! x_engine->isOffline());

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

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

  344.             break;

  345.         }

  346. 

  347.         default:

  348.             break;

  349.         }

  350. 

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

  352.     }

  353. 

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

  355.     {

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

  357. 

  358.         if (m_ctrlInChannel < 0 || m_ctrlInChannel > 15)

  359.             return;

  360. 

  361.         if (index >= 0)

  362.         {

  363.             if (x_engine->isOffline())

  364.             {

  365.                 const CarlaEngine::ScopedLocker m(x_engine, block);

  366.                 fluid_synth_program_select(f_synth, m_ctrlInChannel, f_id, midiprog.data[index].bank, midiprog.data[index].program);

  367.             }

  368.             else

  369.             {

  370.                 const ScopedDisabler m(this, block);

  371.                 fluid_synth_program_select(f_synth, m_ctrlInChannel, f_id, midiprog.data[index].bank, midiprog.data[index].program);

  372.             }

  373.         }

  374. 

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

  376.     }

  377. 

  378.     // -------------------------------------------------------------------

  379.     // Plugin state

  380. 

  381.     void reload()

  382.     {

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

  384. 

  385.         // Safely disable plugin for reload

  386.         const ScopedDisabler m(this);

  387. 

  388.         if (x_client->isActive())

  389.             x_client->deactivate();

  390. 

  391.         // Remove client ports

  392.         removeClientPorts();

  393. 

  394.         // Delete old data

  395.         deleteBuffers();

  396. 

  397.         uint32_t aOuts, params, j;

  398.         aOuts  = 2;

  399.         params = FluidSynthParametersMax;

  400. 

  401.         aOut.ports    = new CarlaEngineAudioPort*[aOuts];

  402.         aOut.rindexes = new uint32_t[aOuts];

  403. 

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

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

  406. 

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

  408.         char portName[STR_MAX];

  409. 

  410.         // ---------------------------------------

  411.         // Audio Outputs

  412. 

  413. #ifndef BUILD_BRIDGE

  414.         if (carlaOptions.processMode != PROCESS_MODE_MULTIPLE_CLIENTS)

  415.         {

  416.             strcpy(portName, m_name);

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

  418.         }

  419.         else

  420. #endif

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

  422. 

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

  424.         aOut.rindexes[0] = 0;

  425. 

  426. #ifndef BUILD_BRIDGE

  427.         if (carlaOptions.processMode != PROCESS_MODE_MULTIPLE_CLIENTS)

  428.         {

  429.             strcpy(portName, m_name);

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

  431.         }

  432.         else

  433. #endif

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

  435. 

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

  437.         aOut.rindexes[1] = 1;

  438. 

  439.         // ---------------------------------------

  440.         // MIDI Input

  441. 

  442. #ifndef BUILD_BRIDGE

  443.         if (carlaOptions.processMode != PROCESS_MODE_MULTIPLE_CLIENTS)

  444.         {

  445.             strcpy(portName, m_name);

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

  447.         }

  448.         else

  449. #endif

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

  451. 

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

  453. 

  454.         // ---------------------------------------

  455.         // Parameters

  456. 

  457. #ifndef BUILD_BRIDGE

  458.         if (carlaOptions.processMode != PROCESS_MODE_MULTIPLE_CLIENTS)

  459.         {

  460.             strcpy(portName, m_name);

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

  462.         }

  463.         else

  464. #endif

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

  466. 

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

  468. 

  469. #ifndef BUILD_BRIDGE

  470.         if (carlaOptions.processMode != PROCESS_MODE_MULTIPLE_CLIENTS)

  471.         {

  472.             strcpy(portName, m_name);

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

  474.         }

  475.         else

  476. #endif

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

  478. 

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

  480. 

  481.         // ----------------------

  482.         j = FluidSynthReverbOnOff;

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

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

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

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

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

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

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

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

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

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

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

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

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

  496. 

  497.         // ----------------------

  498.         j = FluidSynthReverbRoomSize;

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

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

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

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

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

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

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

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

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

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

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

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

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

  512. 

  513.         // ----------------------

  514.         j = FluidSynthReverbDamp;

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

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

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

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

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

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

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

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

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

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

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

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

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

  528. 

  529.         // ----------------------

  530.         j = FluidSynthReverbLevel;

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

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

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

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

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

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

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

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

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

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

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

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

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

  544. 

  545.         // ----------------------

  546.         j = FluidSynthReverbWidth;

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

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

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

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

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

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

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

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

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

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

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

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

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

  560. 

  561.         // ----------------------

  562.         j = FluidSynthChorusOnOff;

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

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

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

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

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

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

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

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

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

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

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

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

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

  576. 

  577.         // ----------------------

  578.         j = FluidSynthChorusNr;

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

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

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

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

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

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

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

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

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

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

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

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

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

  592. 

  593.         // ----------------------

  594.         j = FluidSynthChorusLevel;

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

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

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

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

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

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

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

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

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

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

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

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

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

  608. 

  609.         // ----------------------

  610.         j = FluidSynthChorusSpeedHz;

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

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

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

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

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

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

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

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

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

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

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

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

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

  624. 

  625.         // ----------------------

  626.         j = FluidSynthChorusDepthMs;

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

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

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

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

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

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

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

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

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

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

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

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

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

  640. 

  641.         // ----------------------

  642.         j = FluidSynthChorusType;

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

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

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

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

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

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

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

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

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

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

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

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

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

  656. 

  657.         // ----------------------

  658.         j = FluidSynthPolyphony;

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

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

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

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

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

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

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

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

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

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

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

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

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

  672. 

  673.         // ----------------------

  674.         j = FluidSynthInterpolation;

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

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

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

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

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

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

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

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

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

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

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

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

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

  688. 

  689.         // ----------------------

  690.         j = FluidSynthVoiceCount;

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

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

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

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

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

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

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

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

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

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

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

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

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

  704. 

  705.         // ---------------------------------------

  706. 

  707.         aOut.count  = aOuts;

  708.         param.count = params;

  709. 

  710.         // plugin checks

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

  712. 

  713.         m_hints |= PLUGIN_IS_SYNTH;

  714.         m_hints |= PLUGIN_CAN_VOLUME;

  715.         m_hints |= PLUGIN_CAN_BALANCE;

  716. 

  717.         reloadPrograms(true);

  718. 

  719.         x_client->activate();

  720. 

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

  722.     }

  723. 

  724.     void reloadPrograms(bool init)

  725.     {

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

  727. 

  728.         // Delete old programs

  729.         if (midiprog.count > 0)

  730.         {

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

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

  733. 

  734.             delete[] midiprog.data;

  735.         }

  736. 

  737.         midiprog.count = 0;

  738.         midiprog.data  = nullptr;

  739. 

  740.         // Query new programs

  741.         fluid_sfont_t* f_sfont;

  742.         fluid_preset_t f_preset;

  743. 

  744.         f_sfont = fluid_synth_get_sfont_by_id(f_synth, f_id);

  745. 

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

  747.         f_sfont->iteration_start(f_sfont);

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

  749.             midiprog.count += 1;

  750. 

  751.         if (midiprog.count > 0)

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

  753. 

  754.         // Update data

  755.         uint32_t i = 0;

  756.         f_sfont->iteration_start(f_sfont);

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

  758.         {

  759.             Q_ASSERT(i < midiprog.count);

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

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

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

  763.             i++;

  764.         }

  765. 

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

  767. 

  768. #ifndef BUILD_BRIDGE

  769.         // Update OSC Names

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

  771. 

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

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

  774. 

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

  776. #endif

  777. 

  778.         if (init)

  779.         {

  780.             fluid_synth_program_reset(f_synth);

  781. 

  782.             if (midiprog.count > 0)

  783.             {

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

  785.                 {

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

  787. #ifdef FLUIDSYNTH_VERSION_NEW_API

  788.                     fluid_synth_set_channel_type(f_synth, i, CHANNEL_TYPE_MELODIC);

  789. #endif

  790.                 }

  791. 

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

  793. #ifdef FLUIDSYNTH_VERSION_NEW_API

  794.                 fluid_synth_set_channel_type(f_synth, 9, CHANNEL_TYPE_DRUM);

  795. #endif

  796. 

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

  798.             }

  799.         }

  800.     }

  801. 

  802.     // -------------------------------------------------------------------

  803.     // Plugin processing

  804. 

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

  806.     {

  807.         uint32_t i, k;

  808.         uint32_t midiEventCount = 0;

  809. 

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

  811. 

  812.         CARLA_PROCESS_CONTINUE_CHECK;

  813. 

  814.         // --------------------------------------------------------------------------------------------------------

  815.         // Parameters Input [Automation]

  816. 

  817.         if (m_active && m_activeBefore)

  818.         {

  819.             bool allNotesOffSent = false;

  820. 

  821.             const CarlaEngineControlEvent* cinEvent;

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

  823. 

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

  825. 

  826.             if (midiprog.current >= 0 && midiprog.count > 0 && m_ctrlInChannel >= 0 && m_ctrlInChannel < 16)

  827.                 nextBankIds[m_ctrlInChannel] = midiprog.data[midiprog.current].bank;

  828. 

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

  830.             {

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

  832. 

  833.                 if (! cinEvent)

  834.                     continue;

  835. 

  836.                 time = cinEvent->time - framesOffset;

  837. 

  838.                 if (time >= frames)

  839.                     continue;

  840. 

  841.                 // Control change

  842.                 switch (cinEvent->type)

  843.                 {

  844.                 case CarlaEngineEventNull:

  845.                     break;

  846. 

  847.                 case CarlaEngineEventControlChange:

  848.                 {

  849.                     double value;

  850. 

  851.                     // Control backend stuff

  852.                     if (cinEvent->channel == m_ctrlInChannel)

  853.                     {

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

  855.                         {

  856.                             value = cinEvent->value;

  857.                             setDryWet(value, false, false);

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

  859.                             continue;

  860.                         }

  861. 

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

  863.                         {

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

  865.                             setVolume(value, false, false);

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

  867.                             continue;

  868.                         }

  869. 

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

  871.                         {

  872.                             double left, right;

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

  874. 

  875.                             if (value < 0)

  876.                             {

  877.                                 left  = -1.0;

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

  879.                             }

  880.                             else if (value > 0)

  881.                             {

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

  883.                                 right = 1.0;

  884.                             }

  885.                             else

  886.                             {

  887.                                 left  = -1.0;

  888.                                 right = 1.0;

  889.                             }

  890. 

  891.                             setBalanceLeft(left, false, false);

  892.                             setBalanceRight(right, false, false);

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

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

  895.                             continue;

  896.                         }

  897.                     }

  898. 

  899.                     // Control plugin parameters

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

  901.                     {

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

  903.                             continue;

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

  905.                             continue;

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

  907.                             continue;

  908. 

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

  910.                         {

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

  912.                             {

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

  914.                             }

  915.                             else

  916.                             {

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

  918. 

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

  920.                                     value = rint(value);

  921.                             }

  922. 

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

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

  925.                         }

  926.                     }

  927. 

  928.                     break;

  929.                 }

  930. 

  931.                 case CarlaEngineEventMidiBankChange:

  932.                     if (cinEvent->channel < 16)

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

  934.                     break;

  935. 

  936.                 case CarlaEngineEventMidiProgramChange:

  937.                     if (cinEvent->channel < 16)

  938.                     {

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

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

  941. 

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

  943.                         {

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

  945.                             {

  946.                                 if (cinEvent->channel == m_ctrlInChannel)

  947.                                 {

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

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

  950.                                 }

  951.                                 else

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

  953. 

  954.                                 break;

  955.                             }

  956.                         }

  957.                     }

  958.                     break;

  959. 

  960.                 case CarlaEngineEventAllSoundOff:

  961.                     if (cinEvent->channel == m_ctrlInChannel)

  962.                     {

  963.                         if (! allNotesOffSent)

  964.                             sendMidiAllNotesOff();

  965. 

  966.                         allNotesOffSent = true;

  967. 

  968. #ifdef FLUIDSYNTH_VERSION_NEW_API

  969.                         fluid_synth_all_notes_off(f_synth, m_ctrlInChannel);

  970.                         fluid_synth_all_sounds_off(f_synth, m_ctrlInChannel);

  971.                     }

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

  973.                     {

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

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

  976. #endif

  977.                     }

  978.                     break;

  979. 

  980.                 case CarlaEngineEventAllNotesOff:

  981.                     if (cinEvent->channel == m_ctrlInChannel)

  982.                     {

  983.                         if (! allNotesOffSent)

  984.                             sendMidiAllNotesOff();

  985. 

  986.                         allNotesOffSent = true;

  987. 

  988. #ifdef FLUIDSYNTH_VERSION_NEW_API

  989.                         fluid_synth_all_notes_off(f_synth, m_ctrlInChannel);

  990.                     }

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

  992.                     {

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

  994. #endif

  995.                     }

  996.                     break;

  997.                 }

  998.             }

  999.         } // End of Parameters Input

  1000. 

  1001.         CARLA_PROCESS_CONTINUE_CHECK;

  1002. 

  1003.         // --------------------------------------------------------------------------------------------------------

  1004.         // MIDI Input (External)

  1005. 

  1006.         if (m_ctrlInChannel >= 0 && m_ctrlInChannel < 16 && m_active && m_activeBefore)

  1007.         {

  1008.             engineMidiLock();

  1009. 

  1010.             for (i=0; i < MAX_MIDI_EVENTS && midiEventCount < MAX_MIDI_EVENTS; i++)

  1011.             {

  1012.                 if (extMidiNotes[i].channel < 0)

  1013.                     break;

  1014. 

  1015.                 if (extMidiNotes[i].velo)

  1016.                     fluid_synth_noteon(f_synth, m_ctrlInChannel, extMidiNotes[i].note, extMidiNotes[i].velo);

  1017.                 else

  1018.                     fluid_synth_noteoff(f_synth, m_ctrlInChannel, extMidiNotes[i].note);

  1019. 

  1020.                 extMidiNotes[i].channel = -1;

  1021.                 midiEventCount += 1;

  1022.             }

  1023. 

  1024.             engineMidiUnlock();

  1025. 

  1026.         } // End of MIDI Input (External)

  1027. 

  1028.         CARLA_PROCESS_CONTINUE_CHECK;

  1029. 

  1030.         // --------------------------------------------------------------------------------------------------------

  1031.         // MIDI Input (System)

  1032. 

  1033.         if (m_active && m_activeBefore)

  1034.         {

  1035.             const CarlaEngineMidiEvent* minEvent;

  1036.             uint32_t time, nEvents = midi.portMin->getEventCount();

  1037. 

  1038.             for (i=0; i < nEvents && midiEventCount < MAX_MIDI_EVENTS; i++)

  1039.             {

  1040.                 minEvent = midi.portMin->getEvent(i);

  1041. 

  1042.                 if (! minEvent)

  1043.                     continue;

  1044. 

  1045.                 time = minEvent->time - framesOffset;

  1046. 

  1047.                 if (time >= frames)

  1048.                     continue;

  1049. 

  1050.                 uint8_t status  = minEvent->data[0];

  1051.                 uint8_t channel = status & 0x0F;

  1052. 

  1053.                 // Fix bad note-off

  1054.                 if (MIDI_IS_STATUS_NOTE_ON(status) && minEvent->data[2] == 0)

  1055.                     status -= 0x10;

  1056. 

  1057.                 if (MIDI_IS_STATUS_NOTE_OFF(status))

  1058.                 {

  1059.                     uint8_t note = minEvent->data[1];

  1060. 

  1061.                     fluid_synth_noteoff(f_synth, channel, note);

  1062. 

  1063.                     if (channel == m_ctrlInChannel)

  1064.                         postponeEvent(PluginPostEventNoteOff, channel, note, 0.0);

  1065.                 }

  1066.                 else if (MIDI_IS_STATUS_NOTE_ON(status))

  1067.                 {

  1068.                     uint8_t note = minEvent->data[1];

  1069.                     uint8_t velo = minEvent->data[2];

  1070. 

  1071.                     fluid_synth_noteon(f_synth, channel, note, velo);

  1072. 

  1073.                     if (channel == m_ctrlInChannel)

  1074.                         postponeEvent(PluginPostEventNoteOn, channel, note, velo);

  1075.                 }

  1076.                 else if (MIDI_IS_STATUS_AFTERTOUCH(status))

  1077.                 {

  1078.                     uint8_t pressure = minEvent->data[1];

  1079. 

  1080.                     fluid_synth_channel_pressure(f_synth, channel, pressure);

  1081.                 }

  1082.                 else if (MIDI_IS_STATUS_PITCH_WHEEL_CONTROL(status))

  1083.                 {

  1084.                     uint8_t lsb = minEvent->data[1];

  1085.                     uint8_t msb = minEvent->data[2];

  1086. 

  1087.                     fluid_synth_pitch_bend(f_synth, channel, (msb << 7) | lsb);

  1088.                 }

  1089.                 else

  1090.                     continue;

  1091. 

  1092.                 midiEventCount += 1;

  1093.             }

  1094.         } // End of MIDI Input (System)

  1095. 

  1096.         CARLA_PROCESS_CONTINUE_CHECK;

  1097. 

  1098.         // --------------------------------------------------------------------------------------------------------

  1099.         // Plugin processing

  1100. 

  1101.         if (m_active)

  1102.         {

  1103.             if (! m_activeBefore)

  1104.             {

  1105.                 if (m_ctrlInChannel >= 0 && m_ctrlInChannel < 16)

  1106.                 {

  1107.                     fluid_synth_cc(f_synth, m_ctrlInChannel, MIDI_CONTROL_ALL_SOUND_OFF, 0);

  1108.                     fluid_synth_cc(f_synth, m_ctrlInChannel, MIDI_CONTROL_ALL_NOTES_OFF, 0);

  1109.                 }

  1110. 

  1111. #ifdef FLUIDSYNTH_VERSION_NEW_API

  1112.                 for (i=0; i < 16; i++)

  1113.                 {

  1114.                     fluid_synth_all_notes_off(f_synth, i);

  1115.                     fluid_synth_all_sounds_off(f_synth, i);

  1116.                 }

  1117. #endif

  1118.             }

  1119. 

  1120.             fluid_synth_process(f_synth, frames, 0, nullptr, 2, outBuffer);

  1121.         }

  1122. 

  1123.         CARLA_PROCESS_CONTINUE_CHECK;

  1124. 

  1125.         // --------------------------------------------------------------------------------------------------------

  1126.         // Post-processing (balance and volume)

  1127. 

  1128.         if (m_active)

  1129.         {

  1130.             bool do_balance = (x_balanceLeft != -1.0 || x_balanceRight != 1.0);

  1131. 

  1132.             double bal_rangeL, bal_rangeR;

  1133.             float oldBufLeft[do_balance ? frames : 0];

  1134. 

  1135.             for (i=0; i < aOut.count; i++)

  1136.             {

  1137.                 // Balance

  1138.                 if (do_balance)

  1139.                 {

  1140.                     if (i%2 == 0)

  1141.                         memcpy(&oldBufLeft, outBuffer[i], sizeof(float)*frames);

  1142. 

  1143.                     bal_rangeL = (x_balanceLeft+1.0)/2;

  1144.                     bal_rangeR = (x_balanceRight+1.0)/2;

  1145. 

  1146.                     for (k=0; k < frames; k++)

  1147.                     {

  1148.                         if (i%2 == 0)

  1149.                         {

  1150.                             // left output

  1151.                             outBuffer[i][k]  = oldBufLeft[k]*(1.0-bal_rangeL);

  1152.                             outBuffer[i][k] += outBuffer[i+1][k]*(1.0-bal_rangeR);

  1153.                         }

  1154.                         else

  1155.                         {

  1156.                             // right

  1157.                             outBuffer[i][k]  = outBuffer[i][k]*bal_rangeR;

  1158.                             outBuffer[i][k] += oldBufLeft[k]*bal_rangeL;

  1159.                         }

  1160.                     }

  1161.                 }

  1162. 

  1163.                 // Volume, using fluidsynth internals

  1164.                 fluid_synth_set_gain(f_synth, x_volume);

  1165. 

  1166.                 // Output VU

  1167.                 for (k=0; i < 2 && k < frames; k++)

  1168.                 {

  1169.                     if (abs(outBuffer[i][k]) > aouts_peak_tmp[i])

  1170.                         aouts_peak_tmp[i] = abs(outBuffer[i][k]);

  1171.                 }

  1172.             }

  1173.         }

  1174.         else

  1175.         {

  1176.             // disable any output sound if not active

  1177.             for (i=0; i < aOut.count; i++)

  1178.                 memset(outBuffer[i], 0.0f, sizeof(float)*frames);

  1179. 

  1180.             aouts_peak_tmp[0] = 0.0;

  1181.             aouts_peak_tmp[1] = 0.0;

  1182. 

  1183.         } // End of Post-processing

  1184. 

  1185.         CARLA_PROCESS_CONTINUE_CHECK;

  1186. 

  1187.         // --------------------------------------------------------------------------------------------------------

  1188.         // Control Output

  1189. 

  1190.         if (m_active)

  1191.         {

  1192.             k = FluidSynthVoiceCount;

  1193.             param_buffers[k] = fluid_synth_get_active_voice_count(f_synth);

  1194.             fixParameterValue(param_buffers[k], param.ranges[k]);

  1195. 

  1196.             if (param.data[k].midiCC > 0)

  1197.             {

  1198.                 double value = (param_buffers[k] - param.ranges[k].min) / (param.ranges[k].max - param.ranges[k].min);

  1199.                 param.portCout->writeEvent(CarlaEngineEventControlChange, framesOffset, param.data[k].midiChannel, param.data[k].midiCC, value);

  1200.             }

  1201.         } // End of Control Output

  1202. 

  1203.         CARLA_PROCESS_CONTINUE_CHECK;

  1204. 

  1205.         // --------------------------------------------------------------------------------------------------------

  1206.         // Peak Values

  1207. 

  1208.         x_engine->setOutputPeak(m_id, 0, aouts_peak_tmp[0]);

  1209.         x_engine->setOutputPeak(m_id, 1, aouts_peak_tmp[1]);

  1210. 

  1211.         m_activeBefore = m_active;

  1212.     }

  1213. 

  1214.     // -------------------------------------------------------------------

  1215. 

  1216.     bool init(const char* const filename, const char* const name, const char* const label)

  1217.     {

  1218.         // ---------------------------------------------------------------

  1219.         // open soundfont

  1220. 

  1221.         f_id = fluid_synth_sfload(f_synth, filename, 0);

  1222. 

  1223.         if (f_id < 0)

  1224.         {

  1225.             setLastError("Failed to load SoundFont file");

  1226.             return false;

  1227.         }

  1228. 

  1229.         // ---------------------------------------------------------------

  1230.         // get info

  1231. 

  1232.         m_filename = strdup(filename);

  1233.         m_label    = strdup(label);

  1234. 

  1235.         if (name)

  1236.             m_name = x_engine->getUniqueName(name);

  1237.         else

  1238.             m_name = x_engine->getUniqueName(label);

  1239. 

  1240.         // ---------------------------------------------------------------

  1241.         // register client

  1242. 

  1243.         x_client = x_engine->addClient(this);

  1244. 

  1245.         if (! x_client->isOk())

  1246.         {

  1247.             setLastError("Failed to register plugin client");

  1248.             return false;

  1249.         }

  1250. 

  1251.         return true;

  1252.     }

  1253. 

  1254. private:

  1255.     enum FluidSynthInputParameters {

  1256.         FluidSynthReverbOnOff    = 0,

  1257.         FluidSynthReverbRoomSize = 1,

  1258.         FluidSynthReverbDamp     = 2,

  1259.         FluidSynthReverbLevel    = 3,

  1260.         FluidSynthReverbWidth    = 4,

  1261.         FluidSynthChorusOnOff    = 5,

  1262.         FluidSynthChorusNr       = 6,

  1263.         FluidSynthChorusLevel    = 7,

  1264.         FluidSynthChorusSpeedHz  = 8,

  1265.         FluidSynthChorusDepthMs  = 9,

  1266.         FluidSynthChorusType     = 10,

  1267.         FluidSynthPolyphony      = 11,

  1268.         FluidSynthInterpolation  = 12,

  1269.         FluidSynthVoiceCount     = 13,

  1270.         FluidSynthParametersMax  = 14

  1271.     };

  1272. 

  1273.     fluid_settings_t* f_settings;

  1274.     fluid_synth_t* f_synth;

  1275.     int f_id;

  1276. 

  1277.     double param_buffers[FluidSynthParametersMax];

  1278.     const char* m_label;

  1279. };

  1280. #endif // WANT_FLUIDSYNTH

  1281. 

  1282. CarlaPlugin* CarlaPlugin::newSF2(const initializer& init)

  1283. {

  1284.     qDebug("CarlaPlugin::newSF2(%p, \"%s\", \"%s\", \"%s\")", init.engine, init.filename, init.name, init.label);

  1285. 

  1286. #ifdef WANT_FLUIDSYNTH

  1287.     short id = init.engine->getNewPluginId();

  1288. 

  1289.     if (id < 0 || id > MAX_PLUGINS)

  1290.     {

  1291.         setLastError("Maximum number of plugins reached");

  1292.         return nullptr;

  1293.     }

  1294. 

  1295.     if (! fluid_is_soundfont(init.filename))

  1296.     {

  1297.         setLastError("Requested file is not a valid SoundFont");

  1298.         return nullptr;

  1299.     }

  1300. 

  1301.     FluidSynthPlugin* const plugin = new FluidSynthPlugin(init.engine, id);

  1302. 

  1303.     if (! plugin->init(init.filename, init.name, init.label))

  1304.     {

  1305.         delete plugin;

  1306.         return nullptr;

  1307.     }

  1308. 

  1309.     plugin->reload();

  1310.     plugin->registerToOsc();

  1311. 

  1312.     return plugin;

  1313. #else

  1314.     setLastError("fluidsynth support not available");

  1315.     return nullptr;

  1316. #endif

  1317. }

  1318. 

  1319. /**@}*/

  1320. 

  1321. CARLA_BACKEND_END_NAMESPACE