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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@falktx.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. 

  26. #include "carla_fluidsynth.h"

  27. 

  28. CARLA_BACKEND_START_NAMESPACE

  29. 

  30. 

  31. /*!

  32.  * @defgroup CarlaBackendFluidSynthPlugin Carla Backend FluidSynth Plugin

  33.  *

  34.  * The Carla Backend FluidSynth Plugin.\n

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

  36.  * @{

  37.  */

  38. 

  39. class FluidSynthPlugin : public CarlaPlugin

  40. {

  41. public:

  42.     FluidSynthPlugin(CarlaEngine* const engine, const unsigned short id)

  43.         : CarlaPlugin(engine, id)

  44.     {

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

  46. 

  47.         m_type  = PLUGIN_SF2;

  48.         m_label = nullptr;

  49. 

  50.         // create settings

  51.         f_settings = new_fluid_settings();

  52. 

  53.         // define settings

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

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

  56. 

  57.         // create synth

  58.         f_synth = new_fluid_synth(f_settings);

  59. 

  60. #ifdef FLUIDSYNTH_VERSION_NEW_API

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

  62. #endif

  63. 

  64.         // set default values

  65.         fluid_synth_set_reverb_on(f_synth, 0);

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

  67. 

  68.         fluid_synth_set_chorus_on(f_synth, 0);

  69.         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);

  70. 

  71.         fluid_synth_set_polyphony(f_synth, 64);

  72. 

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

  74.             fluid_synth_set_interp_method(f_synth, i, FLUID_INTERP_DEFAULT);

  75.     }

  76. 

  77.     ~FluidSynthPlugin()

  78.     {

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

  80. 

  81.         if (m_label)

  82.             free((void*)m_label);

  83. 

  84.         delete_fluid_synth(f_synth);

  85.         delete_fluid_settings(f_settings);

  86.     }

  87. 

  88.     // -------------------------------------------------------------------

  89.     // Information (base)

  90. 

  91.     PluginCategory category()

  92.     {

  93.         return PLUGIN_CATEGORY_SYNTH;

  94.     }

  95. 

  96.     // -------------------------------------------------------------------

  97.     // Information (count)

  98. 

  99.     uint32_t parameterScalePointCount(const uint32_t parameterId)

  100.     {

  101.         CARLA_ASSERT(parameterId < param.count);

  102. 

  103.         switch (parameterId)

  104.         {

  105.         case FluidSynthChorusType:

  106.             return 2;

  107.         case FluidSynthInterpolation:

  108.             return 4;

  109.         default:

  110.             return 0;

  111.         }

  112.     }

  113. 

  114.     // -------------------------------------------------------------------

  115.     // Information (per-plugin data)

  116. 

  117.     double getParameterValue(const uint32_t parameterId)

  118.     {

  119.         CARLA_ASSERT(parameterId < param.count);

  120. 

  121.         return paramBuffers[parameterId];

  122.     }

  123. 

  124.     double getParameterScalePointValue(const uint32_t parameterId, const uint32_t scalePointId)

  125.     {

  126.         CARLA_ASSERT(parameterId < param.count);

  127.         CARLA_ASSERT(scalePointId < parameterScalePointCount(parameterId));

  128. 

  129.         switch (parameterId)

  130.         {

  131.         case FluidSynthChorusType:

  132.             switch (scalePointId)

  133.             {

  134.             case 0:

  135.                 return FLUID_CHORUS_MOD_SINE;

  136.             case 1:

  137.                 return FLUID_CHORUS_MOD_TRIANGLE;

  138.             default:

  139.                 return FLUID_CHORUS_DEFAULT_TYPE;

  140.             }

  141.         case FluidSynthInterpolation:

  142.             switch (scalePointId)

  143.             {

  144.             case 0:

  145.                 return FLUID_INTERP_NONE;

  146.             case 1:

  147.                 return FLUID_INTERP_LINEAR;

  148.             case 2:

  149.                 return FLUID_INTERP_4THORDER;

  150.             case 3:

  151.                 return FLUID_INTERP_7THORDER;

  152.             default:

  153.                 return FLUID_INTERP_DEFAULT;

  154.             }

  155.         default:

  156.             return 0.0;

  157.         }

  158.     }

  159. 

  160.     void getLabel(char* const strBuf)

  161.     {

  162.         if (m_label)

  163.             strncpy(strBuf, m_label, STR_MAX);

  164.         else

  165.             CarlaPlugin::getLabel(strBuf);

  166.     }

  167. 

  168.     void getMaker(char* const strBuf)

  169.     {

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

  171.     }

  172. 

  173.     void getCopyright(char* const strBuf)

  174.     {

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

  176.     }

  177. 

  178.     void getRealName(char* const strBuf)

  179.     {

  180.         getLabel(strBuf);

  181.     }

  182. 

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

  184.     {

  185.         CARLA_ASSERT(parameterId < param.count);

  186. 

  187.         switch (parameterId)

  188.         {

  189.         case FluidSynthReverbOnOff:

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

  191.             break;

  192.         case FluidSynthReverbRoomSize:

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

  194.             break;

  195.         case FluidSynthReverbDamp:

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

  197.             break;

  198.         case FluidSynthReverbLevel:

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

  200.             break;

  201.         case FluidSynthReverbWidth:

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

  203.             break;

  204.         case FluidSynthChorusOnOff:

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

  206.             break;

  207.         case FluidSynthChorusNr:

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

  209.             break;

  210.         case FluidSynthChorusLevel:

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

  212.             break;

  213.         case FluidSynthChorusSpeedHz:

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

  215.             break;

  216.         case FluidSynthChorusDepthMs:

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

  218.             break;

  219.         case FluidSynthChorusType:

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

  221.             break;

  222.         case FluidSynthPolyphony:

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

  224.             break;

  225.         case FluidSynthInterpolation:

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

  227.             break;

  228.         case FluidSynthVoiceCount:

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

  230.             break;

  231.         default:

  232.             CarlaPlugin::getParameterName(parameterId, strBuf);

  233.             break;

  234.         }

  235.     }

  236. 

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

  238.     {

  239.         CARLA_ASSERT(parameterId < param.count);

  240. 

  241.         switch (parameterId)

  242.         {

  243.         case FluidSynthChorusSpeedHz:

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

  245.             break;

  246.         case FluidSynthChorusDepthMs:

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

  248.             break;

  249.         default:

  250.             CarlaPlugin::getParameterUnit(parameterId, strBuf);

  251.             break;

  252.         }

  253.     }

  254. 

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

  256.     {

  257.         CARLA_ASSERT(parameterId < param.count);

  258.         CARLA_ASSERT(scalePointId < parameterScalePointCount(parameterId));

  259. 

  260.         switch (parameterId)

  261.         {

  262.         case FluidSynthChorusType:

  263.             switch (scalePointId)

  264.             {

  265.             case 0:

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

  267.                 return;

  268.             case 1:

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

  270.                 return;

  271.             }

  272.         case FluidSynthInterpolation:

  273.             switch (scalePointId)

  274.             {

  275.             case 0:

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

  277.                 return;

  278.             case 1:

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

  280.                 return;

  281.             case 2:

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

  283.                 return;

  284.             case 3:

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

  286.                 return;

  287.             }

  288.         }

  289. 

  290.         CarlaPlugin::getParameterScalePointLabel(parameterId, scalePointId, strBuf);

  291.     }

  292. 

  293.     // -------------------------------------------------------------------

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

  295. 

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

  297.     {

  298.         CARLA_ASSERT(parameterId < param.count);

  299.         paramBuffers[parameterId] = fixParameterValue(value, param.ranges[parameterId]);

  300. 

  301.         switch (parameterId)

  302.         {

  303.         case FluidSynthReverbOnOff:

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

  305.             fluid_synth_set_reverb_on(f_synth, value);

  306.             break;

  307. 

  308.         case FluidSynthReverbRoomSize:

  309.         case FluidSynthReverbDamp:

  310.         case FluidSynthReverbLevel:

  311.         case FluidSynthReverbWidth:

  312.             fluid_synth_set_reverb(f_synth, paramBuffers[FluidSynthReverbRoomSize], paramBuffers[FluidSynthReverbDamp], paramBuffers[FluidSynthReverbWidth], paramBuffers[FluidSynthReverbLevel]);

  313.             break;

  314. 

  315.         case FluidSynthChorusOnOff:

  316.         {

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

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

  319.             fluid_synth_set_chorus_on(f_synth, value);

  320.             break;

  321.         }

  322. 

  323.         case FluidSynthChorusNr:

  324.         case FluidSynthChorusLevel:

  325.         case FluidSynthChorusSpeedHz:

  326.         case FluidSynthChorusDepthMs:

  327.         case FluidSynthChorusType:

  328.         {

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

  330.             fluid_synth_set_chorus(f_synth, rint(paramBuffers[FluidSynthChorusNr]), paramBuffers[FluidSynthChorusLevel], paramBuffers[FluidSynthChorusSpeedHz], paramBuffers[FluidSynthChorusDepthMs], rint(paramBuffers[FluidSynthChorusType]));

  331.             break;

  332.         }

  333. 

  334.         case FluidSynthPolyphony:

  335.         {

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

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

  338.             break;

  339.         }

  340. 

  341.         case FluidSynthInterpolation:

  342.         {

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

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

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

  346.             break;

  347.         }

  348. 

  349.         default:

  350.             break;

  351.         }

  352. 

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

  354.     }

  355. 

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

  357.     {

  358.         CARLA_ASSERT(index >= -1 && index < (int32_t)midiprog.count);

  359. 

  360.         if (index < -1)

  361.             index = -1;

  362.         else if (index > (int32_t)midiprog.count)

  363.             return;

  364. 

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

  366.             return;

  367. 

  368.         if (index >= 0)

  369.         {

  370.             if (x_engine->isOffline())

  371.             {

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

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

  374.             }

  375.             else

  376.             {

  377.                 const ScopedDisabler m(this, block);

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

  379.             }

  380.         }

  381. 

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

  383.     }

  384. 

  385.     // -------------------------------------------------------------------

  386.     // Plugin state

  387. 

  388.     void reload()

  389.     {

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

  391.         CARLA_ASSERT(f_synth);

  392. 

  393.         // Safely disable plugin for reload

  394.         const ScopedDisabler m(this);

  395. 

  396.         if (x_client->isActive())

  397.             x_client->deactivate();

  398. 

  399.         // Remove client ports

  400.         removeClientPorts();

  401. 

  402.         // Delete old data

  403.         deleteBuffers();

  404. 

  405.         uint32_t aOuts, params, j;

  406.         aOuts  = 2;

  407.         params = FluidSynthParametersMax;

  408. 

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

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

  411. 

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

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

  414. 

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

  416.         char portName[portNameSize];

  417. 

  418.         // ---------------------------------------

  419.         // Audio Outputs

  420. 

  421. #ifndef BUILD_BRIDGE

  422.         if (carlaOptions.processMode != PROCESS_MODE_MULTIPLE_CLIENTS)

  423.         {

  424.             strcpy(portName, m_name);

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

  426.         }

  427.         else

  428. #endif

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

  430. 

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

  432.         aOut.rindexes[0] = 0;

  433. 

  434. #ifndef BUILD_BRIDGE

  435.         if (carlaOptions.processMode != PROCESS_MODE_MULTIPLE_CLIENTS)

  436.         {

  437.             strcpy(portName, m_name);

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

  439.         }

  440.         else

  441. #endif

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

  443. 

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

  445.         aOut.rindexes[1] = 1;

  446. 

  447.         // ---------------------------------------

  448.         // MIDI Input

  449. 

  450. #ifndef BUILD_BRIDGE

  451.         if (carlaOptions.processMode != PROCESS_MODE_MULTIPLE_CLIENTS)

  452.         {

  453.             strcpy(portName, m_name);

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

  455.         }

  456.         else

  457. #endif

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

  459. 

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

  461. 

  462.         // ---------------------------------------

  463.         // Parameters

  464. 

  465. #ifndef BUILD_BRIDGE

  466.         if (carlaOptions.processMode != PROCESS_MODE_MULTIPLE_CLIENTS)

  467.         {

  468.             strcpy(portName, m_name);

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

  470.         }

  471.         else

  472. #endif

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

  474. 

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

  476. 

  477. #ifndef BUILD_BRIDGE

  478.         if (carlaOptions.processMode != PROCESS_MODE_MULTIPLE_CLIENTS)

  479.         {

  480.             strcpy(portName, m_name);

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

  482.         }

  483.         else

  484. #endif

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

  486. 

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

  488. 

  489.         // ----------------------

  490.         j = FluidSynthReverbOnOff;

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

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

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

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

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

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

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

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

  499.         param.ranges[j].def = 0.0; // off

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

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

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

  503.         paramBuffers[j] = param.ranges[j].def;

  504. 

  505.         // ----------------------

  506.         j = FluidSynthReverbRoomSize;

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

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

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

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

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

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

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

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

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

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

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

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

  519.         paramBuffers[j] = param.ranges[j].def;

  520. 

  521.         // ----------------------

  522.         j = FluidSynthReverbDamp;

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

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

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

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

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

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

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

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

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

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

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

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

  535.         paramBuffers[j] = param.ranges[j].def;

  536. 

  537.         // ----------------------

  538.         j = FluidSynthReverbLevel;

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

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

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

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

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

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

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

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

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

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

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

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

  551.         paramBuffers[j] = param.ranges[j].def;

  552. 

  553.         // ----------------------

  554.         j = FluidSynthReverbWidth;

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

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

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

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

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

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

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

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

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

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

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

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

  567.         paramBuffers[j] = param.ranges[j].def;

  568. 

  569.         // ----------------------

  570.         j = FluidSynthChorusOnOff;

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

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

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

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

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

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

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

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

  579.         param.ranges[j].def = 0.0; // off

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

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

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

  583.         paramBuffers[j] = param.ranges[j].def;

  584. 

  585.         // ----------------------

  586.         j = FluidSynthChorusNr;

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

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

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

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

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

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

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

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

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

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

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

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

  599.         paramBuffers[j] = param.ranges[j].def;

  600. 

  601.         // ----------------------

  602.         j = FluidSynthChorusLevel;

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

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

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

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

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

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

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

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

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

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

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

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

  615.         paramBuffers[j] = param.ranges[j].def;

  616. 

  617.         // ----------------------

  618.         j = FluidSynthChorusSpeedHz;

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

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

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

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

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

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

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

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

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

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

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

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

  631.         paramBuffers[j] = param.ranges[j].def;

  632. 

  633.         // ----------------------

  634.         j = FluidSynthChorusDepthMs;

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

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

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

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

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

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

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

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

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

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

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

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

  647.         paramBuffers[j] = param.ranges[j].def;

  648. 

  649.         // ----------------------

  650.         j = FluidSynthChorusType;

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

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

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

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

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

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

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

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

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

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

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

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

  663.         paramBuffers[j] = param.ranges[j].def;

  664. 

  665.         // ----------------------

  666.         j = FluidSynthPolyphony;

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

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

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

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

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

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

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

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

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

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

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

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

  679.         paramBuffers[j] = param.ranges[j].def;

  680. 

  681.         // ----------------------

  682.         j = FluidSynthInterpolation;

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

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

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

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

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

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

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

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

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

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

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

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

  695.         paramBuffers[j] = param.ranges[j].def;

  696. 

  697.         // ----------------------

  698.         j = FluidSynthVoiceCount;

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

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

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

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

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

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

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

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

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

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

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

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

  711.         paramBuffers[j] = param.ranges[j].def;

  712. 

  713.         // ---------------------------------------

  714. 

  715.         aOut.count  = aOuts;

  716.         param.count = params;

  717. 

  718.         // plugin checks

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

  720. 

  721.         m_hints |= PLUGIN_IS_SYNTH;

  722.         m_hints |= PLUGIN_CAN_VOLUME;

  723.         m_hints |= PLUGIN_CAN_BALANCE;

  724.         m_hints |= PLUGIN_CAN_FORCE_STEREO;

  725. 

  726.         reloadPrograms(true);

  727. 

  728.         x_client->activate();

  729. 

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

  731.     }

  732. 

  733.     void reloadPrograms(const bool init)

  734.     {

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

  736. 

  737.         // Delete old programs

  738.         if (midiprog.count > 0)

  739.         {

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

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

  742. 

  743.             delete[] midiprog.data;

  744.         }

  745. 

  746.         midiprog.count = 0;

  747.         midiprog.data  = nullptr;

  748. 

  749.         // Query new programs

  750.         fluid_sfont_t* f_sfont;

  751.         fluid_preset_t f_preset;

  752.         bool hasDrums = false;

  753. 

  754.         f_sfont = fluid_synth_get_sfont_by_id(f_synth, f_id);

  755. 

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

  757.         f_sfont->iteration_start(f_sfont);

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

  759.             midiprog.count += 1;

  760. 

  761.         // soundfonts must always have at least 1 midi-program

  762.         CARLA_ASSERT(midiprog.count > 0);

  763. 

  764.         if (midiprog.count > 0)

  765.             midiprog.data = new MidiProgramData[midiprog.count];

  766. 

  767.         // Update data

  768.         uint32_t i = 0;

  769.         f_sfont->iteration_start(f_sfont);

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

  771.         {

  772.             CARLA_ASSERT(i < midiprog.count);

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

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

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

  776. 

  777.             if (midiprog.data[i].bank == 128)

  778.                 hasDrums = true;

  779. 

  780.             i++;

  781.         }

  782. 

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

  784. 

  785. #ifndef BUILD_BRIDGE

  786.         // Update OSC Names

  787.         if (x_engine->isOscControlRegisted())

  788.         {

  789.             x_engine->osc_send_control_set_midi_program_count(m_id, midiprog.count);

  790. 

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

  792.                 x_engine->osc_send_control_set_midi_program_data(m_id, i, midiprog.data[i].bank, midiprog.data[i].program, midiprog.data[i].name);

  793.         }

  794. #endif

  795. 

  796.         if (init)

  797.         {

  798.             fluid_synth_program_reset(f_synth);

  799. 

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

  801.             {

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

  803. #ifdef FLUIDSYNTH_VERSION_NEW_API

  804.                 fluid_synth_set_channel_type(f_synth, i, CHANNEL_TYPE_MELODIC);

  805. #endif

  806.             }

  807. 

  808.             if (hasDrums)

  809.             {

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

  811. #ifdef FLUIDSYNTH_VERSION_NEW_API

  812.                 fluid_synth_set_channel_type(f_synth, 9, CHANNEL_TYPE_DRUM);

  813. #endif

  814.             }

  815.             else

  816.             {

  817.                 fluid_synth_program_select(f_synth, 9, f_id, midiprog.data[0].bank, midiprog.data[0].program);

  818. #ifdef FLUIDSYNTH_VERSION_NEW_API

  819.                 fluid_synth_set_channel_type(f_synth, 9, CHANNEL_TYPE_MELODIC);

  820. #endif

  821.             }

  822. 

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

  824.         }

  825.         else

  826.         {

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

  828.         }

  829.     }

  830. 

  831.     // -------------------------------------------------------------------

  832.     // Plugin processing

  833. 

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

  835.     {

  836.         uint32_t i, k;

  837.         uint32_t midiEventCount = 0;

  838. 

  839.         double aOutsPeak[2] = { 0.0 };

  840. 

  841.         CARLA_PROCESS_CONTINUE_CHECK;

  842. 

  843.         // --------------------------------------------------------------------------------------------------------

  844.         // Parameters Input [Automation]

  845. 

  846.         if (m_active && m_activeBefore)

  847.         {

  848.             bool allNotesOffSent = false;

  849. 

  850.             const CarlaEngineControlEvent* cinEvent;

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

  852. 

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

  854. 

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

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

  857. 

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

  859.             {

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

  861. 

  862.                 if (! cinEvent)

  863.                     continue;

  864. 

  865.                 time = cinEvent->time - framesOffset;

  866. 

  867.                 if (time >= frames)

  868.                     continue;

  869. 

  870.                 // Control change

  871.                 switch (cinEvent->type)

  872.                 {

  873.                 case CarlaEngineEventNull:

  874.                     break;

  875. 

  876.                 case CarlaEngineEventControlChange:

  877.                 {

  878.                     double value;

  879. 

  880.                     // Control backend stuff

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

  882.                     {

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

  884.                         {

  885.                             value = cinEvent->value;

  886.                             setDryWet(value, false, false);

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

  888.                             continue;

  889.                         }

  890. 

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

  892.                         {

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

  894.                             setVolume(value, false, false);

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

  896.                             continue;

  897.                         }

  898. 

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

  900.                         {

  901.                             double left, right;

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

  903. 

  904.                             if (value < 0.0)

  905.                             {

  906.                                 left  = -1.0;

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

  908.                             }

  909.                             else if (value > 0.0)

  910.                             {

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

  912.                                 right = 1.0;

  913.                             }

  914.                             else

  915.                             {

  916.                                 left  = -1.0;

  917.                                 right = 1.0;

  918.                             }

  919. 

  920.                             setBalanceLeft(left, false, false);

  921.                             setBalanceRight(right, false, false);

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

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

  924.                             continue;

  925.                         }

  926.                     }

  927. 

  928.                     // Control plugin parameters

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

  930.                     {

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

  932.                             continue;

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

  934.                             continue;

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

  936.                             continue;

  937. 

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

  939.                         {

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

  941.                             {

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

  943.                             }

  944.                             else

  945.                             {

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

  947. 

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

  949.                                     value = rint(value);

  950.                             }

  951. 

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

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

  954.                         }

  955.                     }

  956. 

  957.                     break;

  958.                 }

  959. 

  960.                 case CarlaEngineEventMidiBankChange:

  961.                     if (cinEvent->channel < 16)

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

  963.                     break;

  964. 

  965.                 case CarlaEngineEventMidiProgramChange:

  966.                     if (cinEvent->channel < 16)

  967.                     {

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

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

  970. 

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

  972.                         {

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

  974.                             {

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

  976.                                 {

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

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

  979.                                 }

  980.                                 else

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

  982. 

  983.                                 break;

  984.                             }

  985.                         }

  986.                     }

  987.                     break;

  988. 

  989.                 case CarlaEngineEventAllSoundOff:

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

  991.                     {

  992.                         if (! allNotesOffSent)

  993.                             sendMidiAllNotesOff();

  994. 

  995.                         postponeEvent(PluginPostEventParameterChange, PARAMETER_ACTIVE, 0, 0.0);

  996.                         postponeEvent(PluginPostEventParameterChange, PARAMETER_ACTIVE, 0, 1.0);

  997. 

  998.                         allNotesOffSent = true;

  999.                     }

  1000.                     break;

  1001. 

  1002.                 case CarlaEngineEventAllNotesOff:

  1003.                     if (cinEvent->channel == m_ctrlInChannel)

  1004.                     {

  1005.                         if (! allNotesOffSent)

  1006.                             sendMidiAllNotesOff();

  1007. 

  1008.                         allNotesOffSent = true;

  1009.                     }

  1010.                     break;

  1011.                 }

  1012.             }

  1013.         } // End of Parameters Input

  1014. 

  1015.         CARLA_PROCESS_CONTINUE_CHECK;

  1016. 

  1017.         // --------------------------------------------------------------------------------------------------------

  1018.         // MIDI Input

  1019. 

  1020.         if (m_active && m_activeBefore)

  1021.         {

  1022.             // ----------------------------------------------------------------------------------------------------

  1023.             // MIDI Input (External)

  1024. 

  1025.             {

  1026.                 engineMidiLock();

  1027. 

  1028.                 for (i=0; i < MAX_MIDI_EVENTS && midiEventCount < MAX_MIDI_EVENTS; i++)

  1029.                 {

  1030.                     if (extMidiNotes[i].channel < 0)

  1031.                         break;

  1032. 

  1033.                     if (extMidiNotes[i].velo)

  1034.                         fluid_synth_noteon(f_synth, m_ctrlInChannel, extMidiNotes[i].note, extMidiNotes[i].velo);

  1035.                     else

  1036.                         fluid_synth_noteoff(f_synth, m_ctrlInChannel, extMidiNotes[i].note);

  1037. 

  1038.                     extMidiNotes[i].channel = -1; // mark as invalid

  1039.                     midiEventCount += 1;

  1040.                 }

  1041. 

  1042.                 engineMidiUnlock();

  1043. 

  1044.             } // End of MIDI Input (External)

  1045. 

  1046.             CARLA_PROCESS_CONTINUE_CHECK;

  1047. 

  1048.             // ----------------------------------------------------------------------------------------------------

  1049.             // MIDI Input (System)

  1050. 

  1051.             {

  1052.                 const CarlaEngineMidiEvent* minEvent;

  1053.                 uint32_t time, nEvents = midi.portMin->getEventCount();

  1054. 

  1055.                 for (i=0; i < nEvents && midiEventCount < MAX_MIDI_EVENTS; i++)

  1056.                 {

  1057.                     minEvent = midi.portMin->getEvent(i);

  1058. 

  1059.                     if (! minEvent)

  1060.                         continue;

  1061. 

  1062.                     time = minEvent->time - framesOffset;

  1063. 

  1064.                     if (time >= frames)

  1065.                         continue;

  1066. 

  1067.                     uint8_t status  = minEvent->data[0];

  1068.                     uint8_t channel = status & 0x0F;

  1069. 

  1070.                     // Fix bad note-off

  1071.                     if (MIDI_IS_STATUS_NOTE_ON(status) && minEvent->data[2] == 0)

  1072.                         status -= 0x10;

  1073. 

  1074.                     if (MIDI_IS_STATUS_NOTE_OFF(status))

  1075.                     {

  1076.                         uint8_t note = minEvent->data[1];

  1077. 

  1078.                         fluid_synth_noteoff(f_synth, channel, note);

  1079. 

  1080.                         postponeEvent(PluginPostEventNoteOff, channel, note, 0.0);

  1081.                     }

  1082.                     else if (MIDI_IS_STATUS_NOTE_ON(status))

  1083.                     {

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

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

  1086. 

  1087.                         fluid_synth_noteon(f_synth, channel, note, velo);

  1088. 

  1089.                         postponeEvent(PluginPostEventNoteOn, channel, note, velo);

  1090.                     }

  1091.                     else if (MIDI_IS_STATUS_POLYPHONIC_AFTERTOUCH(status))

  1092.                     {

  1093.                         // TODO, not in fluidsynth API?

  1094.                     }

  1095.                     else if (MIDI_IS_STATUS_AFTERTOUCH(status))

  1096.                     {

  1097.                         uint8_t pressure = minEvent->data[1];

  1098. 

  1099.                         fluid_synth_channel_pressure(f_synth, channel, pressure);

  1100.                     }

  1101.                     else if (MIDI_IS_STATUS_PITCH_WHEEL_CONTROL(status))

  1102.                     {

  1103.                         uint8_t lsb = minEvent->data[1];

  1104.                         uint8_t msb = minEvent->data[2];

  1105. 

  1106.                         fluid_synth_pitch_bend(f_synth, channel, (msb << 7) | lsb);

  1107.                     }

  1108.                     else

  1109.                         continue;

  1110. 

  1111.                     midiEventCount += 1;

  1112.                 }

  1113.             } // End of MIDI Input (System)

  1114. 

  1115.         } // End of MIDI Input

  1116. 

  1117.         CARLA_PROCESS_CONTINUE_CHECK;

  1118. 

  1119.         // --------------------------------------------------------------------------------------------------------

  1120.         // Plugin processing

  1121. 

  1122.         if (m_active)

  1123.         {

  1124.             if (! m_activeBefore)

  1125.             {

  1126.                 for (int c=0; c < MAX_MIDI_CHANNELS; c++)

  1127.                 {

  1128. #ifdef FLUIDSYNTH_VERSION_NEW_API

  1129.                     fluid_synth_all_notes_off(f_synth, c);

  1130.                     fluid_synth_all_sounds_off(f_synth, c);

  1131. #else

  1132.                     fluid_synth_cc(f_synth, c, MIDI_CONTROL_ALL_SOUND_OFF, 0);

  1133.                     fluid_synth_cc(f_synth, c, MIDI_CONTROL_ALL_NOTES_OFF, 0);

  1134. #endif

  1135.                 }

  1136.             }

  1137. 

  1138.             fluid_synth_process(f_synth, frames, 0, nullptr, 2, outBuffer);

  1139.         }

  1140. 

  1141.         CARLA_PROCESS_CONTINUE_CHECK;

  1142. 

  1143.         // --------------------------------------------------------------------------------------------------------

  1144.         // Post-processing (balance and volume)

  1145. 

  1146.         if (m_active)

  1147.         {

  1148.             bool do_balance = (x_balanceLeft != -1.0 || x_balanceRight != 1.0);

  1149. 

  1150.             double bal_rangeL, bal_rangeR;

  1151.             float oldBufLeft[do_balance ? frames : 0];

  1152. 

  1153.             for (i=0; i < aOut.count; i++)

  1154.             {

  1155.                 // Balance

  1156.                 if (do_balance)

  1157.                 {

  1158.                     if (i%2 == 0)

  1159.                         memcpy(&oldBufLeft, outBuffer[i], sizeof(float)*frames);

  1160. 

  1161.                     bal_rangeL = (x_balanceLeft+1.0)/2;

  1162.                     bal_rangeR = (x_balanceRight+1.0)/2;

  1163. 

  1164.                     for (k=0; k < frames; k++)

  1165.                     {

  1166.                         if (i%2 == 0)

  1167.                         {

  1168.                             // left output

  1169.                             outBuffer[i][k]  = oldBufLeft[k]*(1.0-bal_rangeL);

  1170.                             outBuffer[i][k] += outBuffer[i+1][k]*(1.0-bal_rangeR);

  1171.                         }

  1172.                         else

  1173.                         {

  1174.                             // right

  1175.                             outBuffer[i][k]  = outBuffer[i][k]*bal_rangeR;

  1176.                             outBuffer[i][k] += oldBufLeft[k]*bal_rangeL;

  1177.                         }

  1178.                     }

  1179.                 }

  1180. 

  1181.                 // Volume, using fluidsynth internals

  1182.                 fluid_synth_set_gain(f_synth, x_volume);

  1183. 

  1184.                 // Output VU

  1185.                 for (k=0; i < 2 && k < frames; k++)

  1186.                 {

  1187.                     if (abs(outBuffer[i][k]) > aOutsPeak[i])

  1188.                         aOutsPeak[i] = abs(outBuffer[i][k]);

  1189.                 }

  1190.             }

  1191.         }

  1192.         else

  1193.         {

  1194.             // disable any output sound if not active

  1195.             for (i=0; i < aOut.count; i++)

  1196.                 zeroF(outBuffer[i], frames);

  1197. 

  1198.             aOutsPeak[0] = 0.0;

  1199.             aOutsPeak[1] = 0.0;

  1200. 

  1201.         } // End of Post-processing

  1202. 

  1203.         CARLA_PROCESS_CONTINUE_CHECK;

  1204. 

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

  1206.         // Control Output

  1207. 

  1208.         if (m_active)

  1209.         {

  1210.             k = FluidSynthVoiceCount;

  1211.             paramBuffers[k] = fluid_synth_get_active_voice_count(f_synth);

  1212.             fixParameterValue(paramBuffers[k], param.ranges[k]);

  1213. 

  1214.             if (param.data[k].midiCC > 0)

  1215.             {

  1216.                 double value = (paramBuffers[k] - param.ranges[k].min) / (param.ranges[k].max - param.ranges[k].min);

  1217.                 param.portCout->writeEvent(CarlaEngineEventControlChange, framesOffset, param.data[k].midiChannel, param.data[k].midiCC, value);

  1218.             }

  1219.         } // End of Control Output

  1220. 

  1221.         CARLA_PROCESS_CONTINUE_CHECK;

  1222. 

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

  1224.         // Peak Values

  1225. 

  1226.         x_engine->setOutputPeak(m_id, 0, aOutsPeak[0]);

  1227.         x_engine->setOutputPeak(m_id, 1, aOutsPeak[1]);

  1228. 

  1229.         m_activeBefore = m_active;

  1230.     }

  1231. 

  1232.     // -------------------------------------------------------------------

  1233. 

  1234.     bool init(const char* const filename, const char* const name, const char* const label)

  1235.     {

  1236.         // ---------------------------------------------------------------

  1237.         // open soundfont

  1238. 

  1239.         f_id = fluid_synth_sfload(f_synth, filename, 0);

  1240. 

  1241.         if (f_id < 0)

  1242.         {

  1243.             setLastError("Failed to load SoundFont file");

  1244.             return false;

  1245.         }

  1246. 

  1247.         // ---------------------------------------------------------------

  1248.         // get info

  1249. 

  1250.         m_filename = strdup(filename);

  1251.         m_label    = strdup(label);

  1252. 

  1253.         if (name)

  1254.             m_name = x_engine->getUniqueName(name);

  1255.         else

  1256.             m_name = x_engine->getUniqueName(label);

  1257. 

  1258.         // ---------------------------------------------------------------

  1259.         // register client

  1260. 

  1261.         x_client = x_engine->addClient(this);

  1262. 

  1263.         if (! x_client->isOk())

  1264.         {

  1265.             setLastError("Failed to register plugin client");

  1266.             return false;

  1267.         }

  1268. 

  1269.         return true;

  1270.     }

  1271. 

  1272. private:

  1273.     enum FluidSynthInputParameters {

  1274.         FluidSynthReverbOnOff    = 0,

  1275.         FluidSynthReverbRoomSize = 1,

  1276.         FluidSynthReverbDamp     = 2,

  1277.         FluidSynthReverbLevel    = 3,

  1278.         FluidSynthReverbWidth    = 4,

  1279.         FluidSynthChorusOnOff    = 5,

  1280.         FluidSynthChorusNr       = 6,

  1281.         FluidSynthChorusLevel    = 7,

  1282.         FluidSynthChorusSpeedHz  = 8,

  1283.         FluidSynthChorusDepthMs  = 9,

  1284.         FluidSynthChorusType     = 10,

  1285.         FluidSynthPolyphony      = 11,

  1286.         FluidSynthInterpolation  = 12,

  1287.         FluidSynthVoiceCount     = 13,

  1288.         FluidSynthParametersMax  = 14

  1289.     };

  1290. 

  1291.     fluid_settings_t* f_settings;

  1292.     fluid_synth_t* f_synth;

  1293.     int f_id;

  1294. 

  1295.     double paramBuffers[FluidSynthParametersMax];

  1296. 

  1297.     const char* m_label;

  1298. };

  1299. 

  1300. /**@}*/

  1301. 

  1302. CARLA_BACKEND_END_NAMESPACE

  1303. 

  1304. #else // WANT_FLUIDSYNTH

  1305. #  warning fluidsynth not available (no SF2 support)

  1306. #endif

  1307. 

  1308. CARLA_BACKEND_START_NAMESPACE

  1309. 

  1310. CarlaPlugin* CarlaPlugin::newSF2(const initializer& init)

  1311. {

  1312.     qDebug("CarlaPlugin::newSF2(%p, \"%s\", \"%s\", \"%s\")", init.engine, init.filename, init.name, init.label);

  1313. 

  1314. #ifdef WANT_FLUIDSYNTH

  1315.     short id = init.engine->getNewPluginId();

  1316. 

  1317.     if (id < 0 || id > CarlaEngine::maxPluginNumber())

  1318.     {

  1319.         setLastError("Maximum number of plugins reached");

  1320.         return nullptr;

  1321.     }

  1322. 

  1323.     if (! fluid_is_soundfont(init.filename))

  1324.     {

  1325.         setLastError("Requested file is not a valid SoundFont");

  1326.         return nullptr;

  1327.     }

  1328. 

  1329.     FluidSynthPlugin* const plugin = new FluidSynthPlugin(init.engine, id);

  1330. 

  1331.     if (! plugin->init(init.filename, init.name, init.label))

  1332.     {

  1333.         delete plugin;

  1334.         return nullptr;

  1335.     }

  1336. 

  1337.     plugin->reload();

  1338.     plugin->registerToOscControl();

  1339. 

  1340.     return plugin;

  1341. #else

  1342.     setLastError("fluidsynth support not available");

  1343.     return nullptr;

  1344. #endif

  1345. }

  1346. 

  1347. CARLA_BACKEND_END_NAMESPACE