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Collection of tools useful for audio production
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Cadence/c++/carla-plugin/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.hpp"

  23. 

  24. #ifdef WANT_FLUIDSYNTH

  25. 

  26. #include <fluidsynth.h>

  27. 

  28. #define FLUIDSYNTH_VERSION_NEW_API (FLUIDSYNTH_VERSION_MAJOR >= 1 && FLUIDSYNTH_VERSION_MINOR >= 1 && FLUIDSYNTH_VERSION_MICRO >= 4)

  29. 

  30. CARLA_BACKEND_START_NAMESPACE

  31. 

  32. 

  33. /*!

  34.  * @defgroup CarlaBackendFluidSynthPlugin Carla Backend FluidSynth Plugin

  35.  *

  36.  * The Carla Backend FluidSynth Plugin.\n

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

  38.  * @{

  39.  */

  40. 

  41. class FluidSynthPlugin : public CarlaPlugin

  42. {

  43. public:

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

  45.         : 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(const uint32_t parameterId)

  102.     {

  103.         CARLA_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(const uint32_t parameterId)

  120.     {

  121.         CARLA_ASSERT(parameterId < param.count);

  122. 

  123.         return paramBuffers[parameterId];

  124.     }

  125. 

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

  127.     {

  128.         CARLA_ASSERT(parameterId < param.count);

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

  130. 

  131.         switch (parameterId)

  132.         {

  133.         case FluidSynthChorusType:

  134.             switch (scalePointId)

  135.             {

  136.             case 0:

  137.                 return FLUID_CHORUS_MOD_SINE;

  138.             case 1:

  139.                 return FLUID_CHORUS_MOD_TRIANGLE;

  140.             default:

  141.                 return FLUID_CHORUS_DEFAULT_TYPE;

  142.             }

  143.         case FluidSynthInterpolation:

  144.             switch (scalePointId)

  145.             {

  146.             case 0:

  147.                 return FLUID_INTERP_NONE;

  148.             case 1:

  149.                 return FLUID_INTERP_LINEAR;

  150.             case 2:

  151.                 return FLUID_INTERP_4THORDER;

  152.             case 3:

  153.                 return FLUID_INTERP_7THORDER;

  154.             default:

  155.                 return FLUID_INTERP_DEFAULT;

  156.             }

  157.         default:

  158.             return 0.0;

  159.         }

  160.     }

  161. 

  162.     void getLabel(char* const strBuf)

  163.     {

  164.         if (m_label)

  165.             strncpy(strBuf, m_label, STR_MAX);

  166.         else

  167.             CarlaPlugin::getLabel(strBuf);

  168.     }

  169. 

  170.     void getMaker(char* const strBuf)

  171.     {

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

  173.     }

  174. 

  175.     void getCopyright(char* const strBuf)

  176.     {

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

  178.     }

  179. 

  180.     void getRealName(char* const strBuf)

  181.     {

  182.         getLabel(strBuf);

  183.     }

  184. 

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

  186.     {

  187.         CARLA_ASSERT(parameterId < param.count);

  188. 

  189.         switch (parameterId)

  190.         {

  191.         case FluidSynthReverbOnOff:

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

  193.             break;

  194.         case FluidSynthReverbRoomSize:

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

  196.             break;

  197.         case FluidSynthReverbDamp:

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

  199.             break;

  200.         case FluidSynthReverbLevel:

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

  202.             break;

  203.         case FluidSynthReverbWidth:

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

  205.             break;

  206.         case FluidSynthChorusOnOff:

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

  208.             break;

  209.         case FluidSynthChorusNr:

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

  211.             break;

  212.         case FluidSynthChorusLevel:

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

  214.             break;

  215.         case FluidSynthChorusSpeedHz:

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

  217.             break;

  218.         case FluidSynthChorusDepthMs:

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

  220.             break;

  221.         case FluidSynthChorusType:

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

  223.             break;

  224.         case FluidSynthPolyphony:

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

  226.             break;

  227.         case FluidSynthInterpolation:

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

  229.             break;

  230.         case FluidSynthVoiceCount:

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

  232.             break;

  233.         default:

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

  235.             break;

  236.         }

  237.     }

  238. 

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

  240.     {

  241.         CARLA_ASSERT(parameterId < param.count);

  242. 

  243.         switch (parameterId)

  244.         {

  245.         case FluidSynthChorusSpeedHz:

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

  247.             break;

  248.         case FluidSynthChorusDepthMs:

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

  250.             break;

  251.         default:

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

  253.             break;

  254.         }

  255.     }

  256. 

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

  258.     {

  259.         CARLA_ASSERT(parameterId < param.count);

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

  261. 

  262.         switch (parameterId)

  263.         {

  264.         case FluidSynthChorusType:

  265.             switch (scalePointId)

  266.             {

  267.             case 0:

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

  269.                 return;

  270.             case 1:

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

  272.                 return;

  273.             }

  274.         case FluidSynthInterpolation:

  275.             switch (scalePointId)

  276.             {

  277.             case 0:

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

  279.                 return;

  280.             case 1:

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

  282.                 return;

  283.             case 2:

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

  285.                 return;

  286.             case 3:

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

  288.                 return;

  289.             }

  290.         }

  291. 

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

  293.     }

  294. 

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

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

  297. 

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

  299.     {

  300.         CARLA_ASSERT(parameterId < param.count);

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

  302. 

  303.         switch (parameterId)

  304.         {

  305.         case FluidSynthReverbOnOff:

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

  307.             fluid_synth_set_reverb_on(f_synth, value);

  308.             break;

  309. 

  310.         case FluidSynthReverbRoomSize:

  311.         case FluidSynthReverbDamp:

  312.         case FluidSynthReverbLevel:

  313.         case FluidSynthReverbWidth:

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

  315.             break;

  316. 

  317.         case FluidSynthChorusOnOff:

  318.         {

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

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

  321.             fluid_synth_set_chorus_on(f_synth, value);

  322.             break;

  323.         }

  324. 

  325.         case FluidSynthChorusNr:

  326.         case FluidSynthChorusLevel:

  327.         case FluidSynthChorusSpeedHz:

  328.         case FluidSynthChorusDepthMs:

  329.         case FluidSynthChorusType:

  330.         {

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

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

  333.             break;

  334.         }

  335. 

  336.         case FluidSynthPolyphony:

  337.         {

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

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

  340.             break;

  341.         }

  342. 

  343.         case FluidSynthInterpolation:

  344.         {

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

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

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

  348.             break;

  349.         }

  350. 

  351.         default:

  352.             break;

  353.         }

  354. 

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

  356.     }

  357. 

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

  359.     {

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

  361. 

  362.         if (index < -1)

  363.             index = -1;

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

  365.             return;

  366. 

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

  368.             return;

  369. 

  370.         if (index >= 0)

  371.         {

  372.             if (x_engine->isOffline())

  373.             {

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

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

  376.             }

  377.             else

  378.             {

  379.                 const ScopedDisabler m(this, block);

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

  381.             }

  382.         }

  383. 

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

  385.     }

  386. 

  387.     // -------------------------------------------------------------------

  388.     // Plugin state

  389. 

  390.     void reload()

  391.     {

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

  393.         CARLA_ASSERT(f_synth);

  394. 

  395.         const ProcessMode processMode(x_engine->getOptions().processMode);

  396. 

  397.         // Safely disable plugin for reload

  398.         const ScopedDisabler m(this);

  399. 

  400.         if (x_client->isActive())

  401.             x_client->deactivate();

  402. 

  403.         // Remove client ports

  404.         removeClientPorts();

  405. 

  406.         // Delete old data

  407.         deleteBuffers();

  408. 

  409.         uint32_t aOuts, params, j;

  410.         aOuts  = 2;

  411.         params = FluidSynthParametersMax;

  412. 

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

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

  415. 

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

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

  418. 

  419.         const int   portNameSize = x_engine->maxPortNameSize();

  420.         CarlaString portName;

  421. 

  422.         // ---------------------------------------

  423.         // Audio Outputs

  424. 

  425.         {

  426.             portName.clear();

  427. 

  428.             if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  429.             {

  430.                 portName  = m_name;

  431.                 portName += ":";

  432.             }

  433. 

  434.             portName += "out-left";

  435.             portName.truncate(portNameSize);

  436. 

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

  438.             aOut.rindexes[0] = 0;

  439.         }

  440. 

  441.         {

  442.             portName.clear();

  443. 

  444.             if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  445.             {

  446.                 portName  = m_name;

  447.                 portName += ":";

  448.             }

  449. 

  450.             portName += "out-right";

  451.             portName.truncate(portNameSize);

  452. 

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

  454.             aOut.rindexes[1] = 1;

  455.         }

  456. 

  457.         // ---------------------------------------

  458.         // MIDI Input

  459. 

  460.         {

  461.             portName.clear();

  462. 

  463.             if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  464.             {

  465.                 portName  = m_name;

  466.                 portName += ":";

  467.             }

  468. 

  469.             portName += "midi-in";

  470.             portName.truncate(portNameSize);

  471. 

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

  473.         }

  474. 

  475.         // ---------------------------------------

  476.         // Parameters

  477. 

  478.         {

  479.             portName.clear();

  480. 

  481.             if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  482.             {

  483.                 portName  = m_name;

  484.                 portName += ":";

  485.             }

  486. 

  487.             portName += "control-in";

  488.             portName.truncate(portNameSize);

  489. 

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

  491.         }

  492. 

  493.         {

  494.             portName.clear();

  495. 

  496.             if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  497.             {

  498.                 portName  = m_name;

  499.                 portName += ":";

  500.             }

  501. 

  502.             portName += "control-out";

  503.             portName.truncate(portNameSize);

  504. 

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

  506.         }

  507. 

  508.         // ----------------------

  509.         j = FluidSynthReverbOnOff;

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

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

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

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

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

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

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

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

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

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

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

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

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

  523. 

  524.         // ----------------------

  525.         j = FluidSynthReverbRoomSize;

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

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

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

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

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

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

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

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

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

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

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

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

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

  539. 

  540.         // ----------------------

  541.         j = FluidSynthReverbDamp;

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

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

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

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

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

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

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

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

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

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

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

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

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

  555. 

  556.         // ----------------------

  557.         j = FluidSynthReverbLevel;

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

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

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

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

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

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

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

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

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

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

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

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

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

  571. 

  572.         // ----------------------

  573.         j = FluidSynthReverbWidth;

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

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

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

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

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

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

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

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

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

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

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

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

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

  587. 

  588.         // ----------------------

  589.         j = FluidSynthChorusOnOff;

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

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

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

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

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

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

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

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

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

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

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

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

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

  603. 

  604.         // ----------------------

  605.         j = FluidSynthChorusNr;

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

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

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

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

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

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

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

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

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

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

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

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

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

  619. 

  620.         // ----------------------

  621.         j = FluidSynthChorusLevel;

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

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

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

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

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

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

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

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

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

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

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

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

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

  635. 

  636.         // ----------------------

  637.         j = FluidSynthChorusSpeedHz;

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

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

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

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

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

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

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

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

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

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

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

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

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

  651. 

  652.         // ----------------------

  653.         j = FluidSynthChorusDepthMs;

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

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

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

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

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

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

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

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

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

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

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

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

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

  667. 

  668.         // ----------------------

  669.         j = FluidSynthChorusType;

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

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

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

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

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

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

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

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

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

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

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

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

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

  683. 

  684.         // ----------------------

  685.         j = FluidSynthPolyphony;

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

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

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

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

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

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

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

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

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

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

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

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

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

  699. 

  700.         // ----------------------

  701.         j = FluidSynthInterpolation;

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

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

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

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

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

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

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

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

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

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

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

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

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

  715. 

  716.         // ----------------------

  717.         j = FluidSynthVoiceCount;

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

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

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

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

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

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

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

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

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

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

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

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

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

  731. 

  732.         // ---------------------------------------

  733. 

  734.         aOut.count  = aOuts;

  735.         param.count = params;

  736. 

  737.         // plugin checks

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

  739. 

  740.         m_hints |= PLUGIN_IS_SYNTH;

  741.         m_hints |= PLUGIN_CAN_VOLUME;

  742.         m_hints |= PLUGIN_CAN_BALANCE;

  743.         m_hints |= PLUGIN_CAN_FORCE_STEREO;

  744. 

  745.         reloadPrograms(true);

  746. 

  747.         x_client->activate();

  748. 

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

  750.     }

  751. 

  752.     void reloadPrograms(const bool init)

  753.     {

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

  755. 

  756.         // Delete old programs

  757.         if (midiprog.count > 0)

  758.         {

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

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

  761. 

  762.             delete[] midiprog.data;

  763.         }

  764. 

  765.         midiprog.count = 0;

  766.         midiprog.data  = nullptr;

  767. 

  768.         // Query new programs

  769.         fluid_sfont_t* f_sfont;

  770.         fluid_preset_t f_preset;

  771.         bool hasDrums = false;

  772. 

  773.         f_sfont = fluid_synth_get_sfont_by_id(f_synth, f_id);

  774. 

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

  776.         f_sfont->iteration_start(f_sfont);

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

  778.             midiprog.count += 1;

  779. 

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

  781.         CARLA_ASSERT(midiprog.count > 0);

  782. 

  783.         if (midiprog.count > 0)

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

  785. 

  786.         // Update data

  787.         uint32_t i = 0;

  788.         f_sfont->iteration_start(f_sfont);

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

  790.         {

  791.             CARLA_ASSERT(i < midiprog.count);

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

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

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

  795. 

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

  797.                 hasDrums = true;

  798. 

  799.             i++;

  800.         }

  801. 

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

  803. 

  804.         // Update OSC Names

  805.         if (x_engine->isOscControlRegisted())

  806.         {

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

  808. 

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

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

  811.         }

  812. 

  813.         if (init)

  814.         {

  815.             fluid_synth_program_reset(f_synth);

  816. 

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

  818.             {

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

  820. #ifdef FLUIDSYNTH_VERSION_NEW_API

  821.                 fluid_synth_set_channel_type(f_synth, i, CHANNEL_TYPE_MELODIC);

  822. #endif

  823.             }

  824. 

  825.             if (hasDrums)

  826.             {

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

  828. #ifdef FLUIDSYNTH_VERSION_NEW_API

  829.                 fluid_synth_set_channel_type(f_synth, 9, CHANNEL_TYPE_DRUM);

  830. #endif

  831.             }

  832.             else

  833.             {

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

  835. #ifdef FLUIDSYNTH_VERSION_NEW_API

  836.                 fluid_synth_set_channel_type(f_synth, 9, CHANNEL_TYPE_MELODIC);

  837. #endif

  838.             }

  839. 

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

  841.         }

  842.         else

  843.         {

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

  845.         }

  846.     }

  847. 

  848.     // -------------------------------------------------------------------

  849.     // Plugin processing

  850. 

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

  852.     {

  853.         uint32_t i, k;

  854.         uint32_t midiEventCount = 0;

  855. 

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

  857. 

  858.         CARLA_PROCESS_CONTINUE_CHECK;

  859. 

  860.         // --------------------------------------------------------------------------------------------------------

  861.         // Parameters Input [Automation]

  862. 

  863.         if (m_active && m_activeBefore)

  864.         {

  865.             bool allNotesOffSent = false;

  866. 

  867.             const CarlaEngineControlEvent* cinEvent;

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

  869. 

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

  871. 

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

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

  874. 

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

  876.             {

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

  878. 

  879.                 if (! cinEvent)

  880.                     continue;

  881. 

  882.                 time = cinEvent->time - framesOffset;

  883. 

  884.                 if (time >= frames)

  885.                     continue;

  886. 

  887.                 // Control change

  888.                 switch (cinEvent->type)

  889.                 {

  890.                 case CarlaEngineNullEvent:

  891.                     break;

  892. 

  893.                 case CarlaEngineParameterChangeEvent:

  894.                 {

  895.                     double value;

  896. 

  897.                     // Control backend stuff

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

  899.                     {

  900.                         if (MIDI_IS_CONTROL_BREATH_CONTROLLER(cinEvent->parameter) && (m_hints & PLUGIN_CAN_DRYWET) > 0)

  901.                         {

  902.                             value = cinEvent->value;

  903.                             setDryWet(value, false, false);

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

  905.                             continue;

  906.                         }

  907. 

  908.                         if (MIDI_IS_CONTROL_CHANNEL_VOLUME(cinEvent->parameter) && (m_hints & PLUGIN_CAN_VOLUME) > 0)

  909.                         {

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

  911.                             setVolume(value, false, false);

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

  913.                             continue;

  914.                         }

  915. 

  916.                         if (MIDI_IS_CONTROL_BALANCE(cinEvent->parameter) && (m_hints & PLUGIN_CAN_BALANCE) > 0)

  917.                         {

  918.                             double left, right;

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

  920. 

  921.                             if (value < 0.0)

  922.                             {

  923.                                 left  = -1.0;

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

  925.                             }

  926.                             else if (value > 0.0)

  927.                             {

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

  929.                                 right = 1.0;

  930.                             }

  931.                             else

  932.                             {

  933.                                 left  = -1.0;

  934.                                 right = 1.0;

  935.                             }

  936. 

  937.                             setBalanceLeft(left, false, false);

  938.                             setBalanceRight(right, false, false);

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

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

  941.                             continue;

  942.                         }

  943.                     }

  944. 

  945.                     // Control plugin parameters

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

  947.                     {

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

  949.                             continue;

  950.                         if (param.data[k].midiCC != cinEvent->parameter)

  951.                             continue;

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

  953.                             continue;

  954. 

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

  956.                         {

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

  958.                             {

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

  960.                             }

  961.                             else

  962.                             {

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

  964. 

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

  966.                                     value = rint(value);

  967.                             }

  968. 

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

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

  971.                         }

  972.                     }

  973. 

  974.                     break;

  975.                 }

  976. 

  977.                 case CarlaEngineMidiBankChangeEvent:

  978.                     if (cinEvent->channel < 16)

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

  980.                     break;

  981. 

  982.                 case CarlaEngineMidiProgramChangeEvent:

  983.                     if (cinEvent->channel < 16)

  984.                     {

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

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

  987. 

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

  989.                         {

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

  991.                             {

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

  993.                                 {

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

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

  996.                                 }

  997.                                 else

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

  999. 

  1000.                                 break;

  1001.                             }

  1002.                         }

  1003.                     }

  1004.                     break;

  1005. 

  1006.                 case CarlaEngineAllSoundOffEvent:

  1007.                     if (cinEvent->channel == m_ctrlInChannel)

  1008.                     {

  1009.                         if (! allNotesOffSent)

  1010.                             sendMidiAllNotesOff();

  1011. 

  1012.                         postponeEvent(PluginPostEventParameterChange, PARAMETER_ACTIVE, 0, 0.0);

  1013.                         postponeEvent(PluginPostEventParameterChange, PARAMETER_ACTIVE, 0, 1.0);

  1014. 

  1015.                         allNotesOffSent = true;

  1016.                     }

  1017.                     break;

  1018. 

  1019.                 case CarlaEngineAllNotesOffEvent:

  1020.                     if (cinEvent->channel == m_ctrlInChannel)

  1021.                     {

  1022.                         if (! allNotesOffSent)

  1023.                             sendMidiAllNotesOff();

  1024. 

  1025.                         allNotesOffSent = true;

  1026.                     }

  1027.                     break;

  1028.                 }

  1029.             }

  1030.         } // End of Parameters Input

  1031. 

  1032.         CARLA_PROCESS_CONTINUE_CHECK;

  1033. 

  1034.         // --------------------------------------------------------------------------------------------------------

  1035.         // MIDI Input

  1036. 

  1037.         if (m_active && m_activeBefore)

  1038.         {

  1039.             // ----------------------------------------------------------------------------------------------------

  1040.             // MIDI Input (External)

  1041. 

  1042.             {

  1043.                 engineMidiLock();

  1044. 

  1045.                 for (i=0; i < MAX_MIDI_EVENTS && midiEventCount < MAX_MIDI_EVENTS; i++)

  1046.                 {

  1047.                     if (extMidiNotes[i].channel < 0)

  1048.                         break;

  1049. 

  1050.                     if (extMidiNotes[i].velo)

  1051.                         fluid_synth_noteon(f_synth, m_ctrlInChannel, extMidiNotes[i].note, extMidiNotes[i].velo);

  1052.                     else

  1053.                         fluid_synth_noteoff(f_synth, m_ctrlInChannel, extMidiNotes[i].note);

  1054. 

  1055.                     extMidiNotes[i].channel = -1; // mark as invalid

  1056.                     midiEventCount += 1;

  1057.                 }

  1058. 

  1059.                 engineMidiUnlock();

  1060. 

  1061.             } // End of MIDI Input (External)

  1062. 

  1063.             CARLA_PROCESS_CONTINUE_CHECK;

  1064. 

  1065.             // ----------------------------------------------------------------------------------------------------

  1066.             // MIDI Input (System)

  1067. 

  1068.             {

  1069.                 const CarlaEngineMidiEvent* minEvent;

  1070.                 uint32_t time, nEvents = midi.portMin->getEventCount();

  1071. 

  1072.                 for (i=0; i < nEvents && midiEventCount < MAX_MIDI_EVENTS; i++)

  1073.                 {

  1074.                     minEvent = midi.portMin->getEvent(i);

  1075. 

  1076.                     if (! minEvent)

  1077.                         continue;

  1078. 

  1079.                     time = minEvent->time - framesOffset;

  1080. 

  1081.                     if (time >= frames)

  1082.                         continue;

  1083. 

  1084.                     uint8_t status  = minEvent->data[0];

  1085.                     uint8_t channel = status & 0x0F;

  1086. 

  1087.                     // Fix bad note-off

  1088.                     if (MIDI_IS_STATUS_NOTE_ON(status) && minEvent->data[2] == 0)

  1089.                         status -= 0x10;

  1090. 

  1091.                     if (MIDI_IS_STATUS_NOTE_OFF(status))

  1092.                     {

  1093.                         uint8_t note = minEvent->data[1];

  1094. 

  1095.                         fluid_synth_noteoff(f_synth, channel, note);

  1096. 

  1097.                         postponeEvent(PluginPostEventNoteOff, channel, note, 0.0);

  1098.                     }

  1099.                     else if (MIDI_IS_STATUS_NOTE_ON(status))

  1100.                     {

  1101.                         uint8_t note = minEvent->data[1];

  1102.                         uint8_t velo = minEvent->data[2];

  1103. 

  1104.                         fluid_synth_noteon(f_synth, channel, note, velo);

  1105. 

  1106.                         postponeEvent(PluginPostEventNoteOn, channel, note, velo);

  1107.                     }

  1108.                     else if (MIDI_IS_STATUS_POLYPHONIC_AFTERTOUCH(status))

  1109.                     {

  1110.                         // TODO, not in fluidsynth API?

  1111.                     }

  1112.                     else if (MIDI_IS_STATUS_AFTERTOUCH(status))

  1113.                     {

  1114.                         uint8_t pressure = minEvent->data[1];

  1115. 

  1116.                         fluid_synth_channel_pressure(f_synth, channel, pressure);

  1117.                     }

  1118.                     else if (MIDI_IS_STATUS_PITCH_WHEEL_CONTROL(status))

  1119.                     {

  1120.                         uint8_t lsb = minEvent->data[1];

  1121.                         uint8_t msb = minEvent->data[2];

  1122. 

  1123.                         fluid_synth_pitch_bend(f_synth, channel, (msb << 7) | lsb);

  1124.                     }

  1125.                     else

  1126.                         continue;

  1127. 

  1128.                     midiEventCount += 1;

  1129.                 }

  1130.             } // End of MIDI Input (System)

  1131. 

  1132.         } // End of MIDI Input

  1133. 

  1134.         CARLA_PROCESS_CONTINUE_CHECK;

  1135. 

  1136.         // --------------------------------------------------------------------------------------------------------

  1137.         // Plugin processing

  1138. 

  1139.         if (m_active)

  1140.         {

  1141.             if (! m_activeBefore)

  1142.             {

  1143.                 for (int c=0; c < MAX_MIDI_CHANNELS; c++)

  1144.                 {

  1145. #ifdef FLUIDSYNTH_VERSION_NEW_API

  1146.                     fluid_synth_all_notes_off(f_synth, c);

  1147.                     fluid_synth_all_sounds_off(f_synth, c);

  1148. #else

  1149.                     fluid_synth_cc(f_synth, c, MIDI_CONTROL_ALL_SOUND_OFF, 0);

  1150.                     fluid_synth_cc(f_synth, c, MIDI_CONTROL_ALL_NOTES_OFF, 0);

  1151. #endif

  1152.                 }

  1153.             }

  1154. 

  1155.             fluid_synth_process(f_synth, frames, 0, nullptr, 2, outBuffer);

  1156.         }

  1157. 

  1158.         CARLA_PROCESS_CONTINUE_CHECK;

  1159. 

  1160.         // --------------------------------------------------------------------------------------------------------

  1161.         // Post-processing (balance and volume)

  1162. 

  1163.         if (m_active)

  1164.         {

  1165.             bool do_balance = (x_balanceLeft != -1.0 || x_balanceRight != 1.0);

  1166. 

  1167.             double bal_rangeL, bal_rangeR;

  1168.             float oldBufLeft[do_balance ? frames : 0];

  1169. 

  1170.             for (i=0; i < aOut.count; i++)

  1171.             {

  1172.                 // Balance

  1173.                 if (do_balance)

  1174.                 {

  1175.                     if (i%2 == 0)

  1176.                         memcpy(&oldBufLeft, outBuffer[i], sizeof(float)*frames);

  1177. 

  1178.                     bal_rangeL = (x_balanceLeft+1.0)/2;

  1179.                     bal_rangeR = (x_balanceRight+1.0)/2;

  1180. 

  1181.                     for (k=0; k < frames; k++)

  1182.                     {

  1183.                         if (i%2 == 0)

  1184.                         {

  1185.                             // left output

  1186.                             outBuffer[i][k]  = oldBufLeft[k]*(1.0-bal_rangeL);

  1187.                             outBuffer[i][k] += outBuffer[i+1][k]*(1.0-bal_rangeR);

  1188.                         }

  1189.                         else

  1190.                         {

  1191.                             // right

  1192.                             outBuffer[i][k]  = outBuffer[i][k]*bal_rangeR;

  1193.                             outBuffer[i][k] += oldBufLeft[k]*bal_rangeL;

  1194.                         }

  1195.                     }

  1196.                 }

  1197. 

  1198.                 // Volume, using fluidsynth internals

  1199.                 fluid_synth_set_gain(f_synth, x_volume);

  1200. 

  1201.                 // Output VU

  1202.                 if (x_engine->getOptions().processMode != PROCESS_MODE_CONTINUOUS_RACK)

  1203.                 {

  1204.                     for (k=0; i < 2 && k < frames; k++)

  1205.                     {

  1206.                         if (std::abs(outBuffer[i][k]) > aOutsPeak[i])

  1207.                             aOutsPeak[i] = std::abs(outBuffer[i][k]);

  1208.                     }

  1209.                 }

  1210.             }

  1211.         }

  1212.         else

  1213.         {

  1214.             // disable any output sound if not active

  1215.             for (i=0; i < aOut.count; i++)

  1216.                 carla_zeroF(outBuffer[i], frames);

  1217. 

  1218.             aOutsPeak[0] = 0.0;

  1219.             aOutsPeak[1] = 0.0;

  1220. 

  1221.         } // End of Post-processing

  1222. 

  1223.         CARLA_PROCESS_CONTINUE_CHECK;

  1224. 

  1225.         // --------------------------------------------------------------------------------------------------------

  1226.         // Control Output

  1227. 

  1228.         if (m_active)

  1229.         {

  1230.             k = FluidSynthVoiceCount;

  1231.             paramBuffers[k] = fluid_synth_get_active_voice_count(f_synth);

  1232.             fixParameterValue(paramBuffers[k], param.ranges[k]);

  1233. 

  1234.             if (param.data[k].midiCC > 0)

  1235.             {

  1236.                 double value = (paramBuffers[k] - param.ranges[k].min) / (param.ranges[k].max - param.ranges[k].min);

  1237.                 param.portCout->writeEvent(CarlaEngineParameterChangeEvent, framesOffset, param.data[k].midiChannel, param.data[k].midiCC, value);

  1238.             }

  1239.         } // End of Control Output

  1240. 

  1241.         CARLA_PROCESS_CONTINUE_CHECK;

  1242. 

  1243.         // --------------------------------------------------------------------------------------------------------

  1244.         // Peak Values

  1245. 

  1246.         x_engine->setOutputPeak(m_id, 0, aOutsPeak[0]);

  1247.         x_engine->setOutputPeak(m_id, 1, aOutsPeak[1]);

  1248. 

  1249.         m_activeBefore = m_active;

  1250.     }

  1251. 

  1252.     // -------------------------------------------------------------------

  1253. 

  1254.     bool init(const char* const filename, const char* const name, const char* const label)

  1255.     {

  1256.         // ---------------------------------------------------------------

  1257.         // open soundfont

  1258. 

  1259.         f_id = fluid_synth_sfload(f_synth, filename, 0);

  1260. 

  1261.         if (f_id < 0)

  1262.         {

  1263.             x_engine->setLastError("Failed to load SoundFont file");

  1264.             return false;

  1265.         }

  1266. 

  1267.         // ---------------------------------------------------------------

  1268.         // get info

  1269. 

  1270.         m_filename = strdup(filename);

  1271.         m_label    = strdup(label);

  1272. 

  1273.         if (name)

  1274.             m_name = x_engine->getUniquePluginName(name);

  1275.         else

  1276.             m_name = x_engine->getUniquePluginName(label);

  1277. 

  1278.         // ---------------------------------------------------------------

  1279.         // register client

  1280. 

  1281.         x_client = x_engine->addClient(this);

  1282. 

  1283.         if (! x_client->isOk())

  1284.         {

  1285.             x_engine->setLastError("Failed to register plugin client");

  1286.             return false;

  1287.         }

  1288. 

  1289.         return true;

  1290.     }

  1291. 

  1292. private:

  1293.     enum FluidSynthInputParameters {

  1294.         FluidSynthReverbOnOff    = 0,

  1295.         FluidSynthReverbRoomSize = 1,

  1296.         FluidSynthReverbDamp     = 2,

  1297.         FluidSynthReverbLevel    = 3,

  1298.         FluidSynthReverbWidth    = 4,

  1299.         FluidSynthChorusOnOff    = 5,

  1300.         FluidSynthChorusNr       = 6,

  1301.         FluidSynthChorusLevel    = 7,

  1302.         FluidSynthChorusSpeedHz  = 8,

  1303.         FluidSynthChorusDepthMs  = 9,

  1304.         FluidSynthChorusType     = 10,

  1305.         FluidSynthPolyphony      = 11,

  1306.         FluidSynthInterpolation  = 12,

  1307.         FluidSynthVoiceCount     = 13,

  1308.         FluidSynthParametersMax  = 14

  1309.     };

  1310. 

  1311.     fluid_settings_t* f_settings;

  1312.     fluid_synth_t* f_synth;

  1313.     int f_id;

  1314. 

  1315.     double paramBuffers[FluidSynthParametersMax];

  1316. 

  1317.     const char* m_label;

  1318. };

  1319. 

  1320. /**@}*/

  1321. 

  1322. CARLA_BACKEND_END_NAMESPACE

  1323. 

  1324. #else // WANT_FLUIDSYNTH

  1325. #  warning fluidsynth not available (no SF2 support)

  1326. #endif

  1327. 

  1328. CARLA_BACKEND_START_NAMESPACE

  1329. 

  1330. CarlaPlugin* CarlaPlugin::newSF2(const initializer& init)

  1331. {

  1332.     qDebug("CarlaPlugin::newSF2(%p, \"%s\", \"%s\", \"%s\")", init.engine, init.filename, init.name, init.label);

  1333. 

  1334. #ifdef WANT_FLUIDSYNTH

  1335.     short id = init.engine->getNewPluginId();

  1336. 

  1337.     if (id < 0 || id > init.engine->maxPluginNumber())

  1338.     {

  1339.         init.engine->setLastError("Maximum number of plugins reached");

  1340.         return nullptr;

  1341.     }

  1342. 

  1343.     if (! fluid_is_soundfont(init.filename))

  1344.     {

  1345.         init.engine->setLastError("Requested file is not a valid SoundFont");

  1346.         return nullptr;

  1347.     }

  1348. 

  1349.     FluidSynthPlugin* const plugin = new FluidSynthPlugin(init.engine, id);

  1350. 

  1351.     if (! plugin->init(init.filename, init.name, init.label))

  1352.     {

  1353.         delete plugin;

  1354.         return nullptr;

  1355.     }

  1356. 

  1357.     plugin->reload();

  1358.     plugin->registerToOscControl();

  1359. 

  1360.     return plugin;

  1361. #else

  1362.     init.engine->setLastError("fluidsynth support not available");

  1363.     return nullptr;

  1364. #endif

  1365. }

  1366. 

  1367. CARLA_BACKEND_END_NAMESPACE