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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.         // Safely disable plugin for reload

  396.         const ScopedDisabler m(this);

  397. 

  398.         if (x_client->isActive())

  399.             x_client->deactivate();

  400. 

  401.         // Remove client ports

  402.         removeClientPorts();

  403. 

  404.         // Delete old data

  405.         deleteBuffers();

  406. 

  407.         uint32_t aOuts, params, j;

  408.         aOuts  = 2;

  409.         params = FluidSynthParametersMax;

  410. 

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

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

  413. 

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

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

  416. 

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

  418.         CarlaString portName;

  419. 

  420.         // ---------------------------------------

  421.         // Audio Outputs

  422. 

  423.         {

  424.             portName.clear();

  425. 

  426.             if (x_engine->processMode() == PROCESS_MODE_SINGLE_CLIENT)

  427.             {

  428.                 portName  = m_name;

  429.                 portName += ":";

  430.             }

  431. 

  432.             portName += "out-left";

  433.             portName.truncate(portNameSize);

  434. 

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

  436.             aOut.rindexes[0] = 0;

  437.         }

  438. 

  439.         {

  440.             portName.clear();

  441. 

  442.             if (x_engine->processMode() == PROCESS_MODE_SINGLE_CLIENT)

  443.             {

  444.                 portName  = m_name;

  445.                 portName += ":";

  446.             }

  447. 

  448.             portName += "out-right";

  449.             portName.truncate(portNameSize);

  450. 

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

  452.             aOut.rindexes[1] = 1;

  453.         }

  454. 

  455.         // ---------------------------------------

  456.         // MIDI Input

  457. 

  458.         {

  459.             portName.clear();

  460. 

  461.             if (x_engine->processMode() == PROCESS_MODE_SINGLE_CLIENT)

  462.             {

  463.                 portName  = m_name;

  464.                 portName += ":";

  465.             }

  466. 

  467.             portName += "midi-in";

  468.             portName.truncate(portNameSize);

  469. 

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

  471.         }

  472. 

  473.         // ---------------------------------------

  474.         // Parameters

  475. 

  476.         {

  477.             portName.clear();

  478. 

  479.             if (x_engine->processMode() == PROCESS_MODE_SINGLE_CLIENT)

  480.             {

  481.                 portName  = m_name;

  482.                 portName += ":";

  483.             }

  484. 

  485.             portName += "control-in";

  486.             portName.truncate(portNameSize);

  487. 

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

  489.         }

  490. 

  491.         {

  492.             portName.clear();

  493. 

  494.             if (x_engine->processMode() == PROCESS_MODE_SINGLE_CLIENT)

  495.             {

  496.                 portName  = m_name;

  497.                 portName += ":";

  498.             }

  499. 

  500.             portName += "control-out";

  501.             portName.truncate(portNameSize);

  502. 

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

  504.         }

  505. 

  506.         // ----------------------

  507.         j = FluidSynthReverbOnOff;

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

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

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

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

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

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

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

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

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

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

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

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

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

  521. 

  522.         // ----------------------

  523.         j = FluidSynthReverbRoomSize;

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

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

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

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

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

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

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

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

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

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

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

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

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

  537. 

  538.         // ----------------------

  539.         j = FluidSynthReverbDamp;

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

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

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

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

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

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

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

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

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

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

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

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

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

  553. 

  554.         // ----------------------

  555.         j = FluidSynthReverbLevel;

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

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

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

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

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

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

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

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

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

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

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

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

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

  569. 

  570.         // ----------------------

  571.         j = FluidSynthReverbWidth;

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

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

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

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

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

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

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

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

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

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

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

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

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

  585. 

  586.         // ----------------------

  587.         j = FluidSynthChorusOnOff;

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

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

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

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

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

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

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

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

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

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

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

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

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

  601. 

  602.         // ----------------------

  603.         j = FluidSynthChorusNr;

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

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

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

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

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

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

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

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

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

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

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

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

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

  617. 

  618.         // ----------------------

  619.         j = FluidSynthChorusLevel;

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

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

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

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

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

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

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

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

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

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

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

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

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

  633. 

  634.         // ----------------------

  635.         j = FluidSynthChorusSpeedHz;

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

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

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

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

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

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

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

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

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

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

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

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

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

  649. 

  650.         // ----------------------

  651.         j = FluidSynthChorusDepthMs;

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

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

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

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

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

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

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

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

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

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

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

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

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

  665. 

  666.         // ----------------------

  667.         j = FluidSynthChorusType;

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

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

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

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

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

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

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

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

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

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

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

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

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

  681. 

  682.         // ----------------------

  683.         j = FluidSynthPolyphony;

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

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

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

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

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

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

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

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

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

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

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

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

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

  697. 

  698.         // ----------------------

  699.         j = FluidSynthInterpolation;

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

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

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

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

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

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

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

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

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

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

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

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

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

  713. 

  714.         // ----------------------

  715.         j = FluidSynthVoiceCount;

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

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

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

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

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

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

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

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

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

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

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

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

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

  729. 

  730.         // ---------------------------------------

  731. 

  732.         aOut.count  = aOuts;

  733.         param.count = params;

  734. 

  735.         // plugin checks

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

  737. 

  738.         m_hints |= PLUGIN_IS_SYNTH;

  739.         m_hints |= PLUGIN_CAN_VOLUME;

  740.         m_hints |= PLUGIN_CAN_BALANCE;

  741.         m_hints |= PLUGIN_CAN_FORCE_STEREO;

  742. 

  743.         reloadPrograms(true);

  744. 

  745.         x_client->activate();

  746. 

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

  748.     }

  749. 

  750.     void reloadPrograms(const bool init)

  751.     {

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

  753. 

  754.         // Delete old programs

  755.         if (midiprog.count > 0)

  756.         {

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

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

  759. 

  760.             delete[] midiprog.data;

  761.         }

  762. 

  763.         midiprog.count = 0;

  764.         midiprog.data  = nullptr;

  765. 

  766.         // Query new programs

  767.         fluid_sfont_t* f_sfont;

  768.         fluid_preset_t f_preset;

  769.         bool hasDrums = false;

  770. 

  771.         f_sfont = fluid_synth_get_sfont_by_id(f_synth, f_id);

  772. 

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

  774.         f_sfont->iteration_start(f_sfont);

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

  776.             midiprog.count += 1;

  777. 

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

  779.         CARLA_ASSERT(midiprog.count > 0);

  780. 

  781.         if (midiprog.count > 0)

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

  783. 

  784.         // Update data

  785.         uint32_t i = 0;

  786.         f_sfont->iteration_start(f_sfont);

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

  788.         {

  789.             CARLA_ASSERT(i < midiprog.count);

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

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

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

  793. 

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

  795.                 hasDrums = true;

  796. 

  797.             i++;

  798.         }

  799. 

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

  801. 

  802.         // Update OSC Names

  803.         if (x_engine->isOscControlRegisted())

  804.         {

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

  806. 

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

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

  809.         }

  810. 

  811.         if (init)

  812.         {

  813.             fluid_synth_program_reset(f_synth);

  814. 

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

  816.             {

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

  818. #ifdef FLUIDSYNTH_VERSION_NEW_API

  819.                 fluid_synth_set_channel_type(f_synth, i, CHANNEL_TYPE_MELODIC);

  820. #endif

  821.             }

  822. 

  823.             if (hasDrums)

  824.             {

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

  826. #ifdef FLUIDSYNTH_VERSION_NEW_API

  827.                 fluid_synth_set_channel_type(f_synth, 9, CHANNEL_TYPE_DRUM);

  828. #endif

  829.             }

  830.             else

  831.             {

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

  833. #ifdef FLUIDSYNTH_VERSION_NEW_API

  834.                 fluid_synth_set_channel_type(f_synth, 9, CHANNEL_TYPE_MELODIC);

  835. #endif

  836.             }

  837. 

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

  839.         }

  840.         else

  841.         {

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

  843.         }

  844.     }

  845. 

  846.     // -------------------------------------------------------------------

  847.     // Plugin processing

  848. 

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

  850.     {

  851.         uint32_t i, k;

  852.         uint32_t midiEventCount = 0;

  853. 

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

  855. 

  856.         CARLA_PROCESS_CONTINUE_CHECK;

  857. 

  858.         // --------------------------------------------------------------------------------------------------------

  859.         // Parameters Input [Automation]

  860. 

  861.         if (m_active && m_activeBefore)

  862.         {

  863.             bool allNotesOffSent = false;

  864. 

  865.             const CarlaEngineControlEvent* cinEvent;

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

  867. 

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

  869. 

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

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

  872. 

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

  874.             {

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

  876. 

  877.                 if (! cinEvent)

  878.                     continue;

  879. 

  880.                 time = cinEvent->time - framesOffset;

  881. 

  882.                 if (time >= frames)

  883.                     continue;

  884. 

  885.                 // Control change

  886.                 switch (cinEvent->type)

  887.                 {

  888.                 case CarlaEngineNullEvent:

  889.                     break;

  890. 

  891.                 case CarlaEngineParameterChangeEvent:

  892.                 {

  893.                     double value;

  894. 

  895.                     // Control backend stuff

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

  897.                     {

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

  899.                         {

  900.                             value = cinEvent->value;

  901.                             setDryWet(value, false, false);

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

  903.                             continue;

  904.                         }

  905. 

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

  907.                         {

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

  909.                             setVolume(value, false, false);

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

  911.                             continue;

  912.                         }

  913. 

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

  915.                         {

  916.                             double left, right;

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

  918. 

  919.                             if (value < 0.0)

  920.                             {

  921.                                 left  = -1.0;

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

  923.                             }

  924.                             else if (value > 0.0)

  925.                             {

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

  927.                                 right = 1.0;

  928.                             }

  929.                             else

  930.                             {

  931.                                 left  = -1.0;

  932.                                 right = 1.0;

  933.                             }

  934. 

  935.                             setBalanceLeft(left, false, false);

  936.                             setBalanceRight(right, false, false);

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

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

  939.                             continue;

  940.                         }

  941.                     }

  942. 

  943.                     // Control plugin parameters

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

  945.                     {

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

  947.                             continue;

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

  949.                             continue;

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

  951.                             continue;

  952. 

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

  954.                         {

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

  956.                             {

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

  958.                             }

  959.                             else

  960.                             {

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

  962. 

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

  964.                                     value = rint(value);

  965.                             }

  966. 

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

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

  969.                         }

  970.                     }

  971. 

  972.                     break;

  973.                 }

  974. 

  975.                 case CarlaEngineMidiBankChangeEvent:

  976.                     if (cinEvent->channel < 16)

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

  978.                     break;

  979. 

  980.                 case CarlaEngineMidiProgramChangeEvent:

  981.                     if (cinEvent->channel < 16)

  982.                     {

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

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

  985. 

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

  987.                         {

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

  989.                             {

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

  991.                                 {

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

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

  994.                                 }

  995.                                 else

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

  997. 

  998.                                 break;

  999.                             }

  1000.                         }

  1001.                     }

  1002.                     break;

  1003. 

  1004.                 case CarlaEngineAllSoundOffEvent:

  1005.                     if (cinEvent->channel == m_ctrlInChannel)

  1006.                     {

  1007.                         if (! allNotesOffSent)

  1008.                             sendMidiAllNotesOff();

  1009. 

  1010.                         postponeEvent(PluginPostEventParameterChange, PARAMETER_ACTIVE, 0, 0.0);

  1011.                         postponeEvent(PluginPostEventParameterChange, PARAMETER_ACTIVE, 0, 1.0);

  1012. 

  1013.                         allNotesOffSent = true;

  1014.                     }

  1015.                     break;

  1016. 

  1017.                 case CarlaEngineAllNotesOffEvent:

  1018.                     if (cinEvent->channel == m_ctrlInChannel)

  1019.                     {

  1020.                         if (! allNotesOffSent)

  1021.                             sendMidiAllNotesOff();

  1022. 

  1023.                         allNotesOffSent = true;

  1024.                     }

  1025.                     break;

  1026.                 }

  1027.             }

  1028.         } // End of Parameters Input

  1029. 

  1030.         CARLA_PROCESS_CONTINUE_CHECK;

  1031. 

  1032.         // --------------------------------------------------------------------------------------------------------

  1033.         // MIDI Input

  1034. 

  1035.         if (m_active && m_activeBefore)

  1036.         {

  1037.             // ----------------------------------------------------------------------------------------------------

  1038.             // MIDI Input (External)

  1039. 

  1040.             {

  1041.                 engineMidiLock();

  1042. 

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

  1044.                 {

  1045.                     if (extMidiNotes[i].channel < 0)

  1046.                         break;

  1047. 

  1048.                     if (extMidiNotes[i].velo)

  1049.                         fluid_synth_noteon(f_synth, m_ctrlInChannel, extMidiNotes[i].note, extMidiNotes[i].velo);

  1050.                     else

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

  1052. 

  1053.                     extMidiNotes[i].channel = -1; // mark as invalid

  1054.                     midiEventCount += 1;

  1055.                 }

  1056. 

  1057.                 engineMidiUnlock();

  1058. 

  1059.             } // End of MIDI Input (External)

  1060. 

  1061.             CARLA_PROCESS_CONTINUE_CHECK;

  1062. 

  1063.             // ----------------------------------------------------------------------------------------------------

  1064.             // MIDI Input (System)

  1065. 

  1066.             {

  1067.                 const CarlaEngineMidiEvent* minEvent;

  1068.                 uint32_t time, nEvents = midi.portMin->getEventCount();

  1069. 

  1070.                 for (i=0; i < nEvents && midiEventCount < MAX_MIDI_EVENTS; i++)

  1071.                 {

  1072.                     minEvent = midi.portMin->getEvent(i);

  1073. 

  1074.                     if (! minEvent)

  1075.                         continue;

  1076. 

  1077.                     time = minEvent->time - framesOffset;

  1078. 

  1079.                     if (time >= frames)

  1080.                         continue;

  1081. 

  1082.                     uint8_t status  = minEvent->data[0];

  1083.                     uint8_t channel = status & 0x0F;

  1084. 

  1085.                     // Fix bad note-off

  1086.                     if (MIDI_IS_STATUS_NOTE_ON(status) && minEvent->data[2] == 0)

  1087.                         status -= 0x10;

  1088. 

  1089.                     if (MIDI_IS_STATUS_NOTE_OFF(status))

  1090.                     {

  1091.                         uint8_t note = minEvent->data[1];

  1092. 

  1093.                         fluid_synth_noteoff(f_synth, channel, note);

  1094. 

  1095.                         postponeEvent(PluginPostEventNoteOff, channel, note, 0.0);

  1096.                     }

  1097.                     else if (MIDI_IS_STATUS_NOTE_ON(status))

  1098.                     {

  1099.                         uint8_t note = minEvent->data[1];

  1100.                         uint8_t velo = minEvent->data[2];

  1101. 

  1102.                         fluid_synth_noteon(f_synth, channel, note, velo);

  1103. 

  1104.                         postponeEvent(PluginPostEventNoteOn, channel, note, velo);

  1105.                     }

  1106.                     else if (MIDI_IS_STATUS_POLYPHONIC_AFTERTOUCH(status))

  1107.                     {

  1108.                         // TODO, not in fluidsynth API?

  1109.                     }

  1110.                     else if (MIDI_IS_STATUS_AFTERTOUCH(status))

  1111.                     {

  1112.                         uint8_t pressure = minEvent->data[1];

  1113. 

  1114.                         fluid_synth_channel_pressure(f_synth, channel, pressure);

  1115.                     }

  1116.                     else if (MIDI_IS_STATUS_PITCH_WHEEL_CONTROL(status))

  1117.                     {

  1118.                         uint8_t lsb = minEvent->data[1];

  1119.                         uint8_t msb = minEvent->data[2];

  1120. 

  1121.                         fluid_synth_pitch_bend(f_synth, channel, (msb << 7) | lsb);

  1122.                     }

  1123.                     else

  1124.                         continue;

  1125. 

  1126.                     midiEventCount += 1;

  1127.                 }

  1128.             } // End of MIDI Input (System)

  1129. 

  1130.         } // End of MIDI Input

  1131. 

  1132.         CARLA_PROCESS_CONTINUE_CHECK;

  1133. 

  1134.         // --------------------------------------------------------------------------------------------------------

  1135.         // Plugin processing

  1136. 

  1137.         if (m_active)

  1138.         {

  1139.             if (! m_activeBefore)

  1140.             {

  1141.                 for (int c=0; c < MAX_MIDI_CHANNELS; c++)

  1142.                 {

  1143. #ifdef FLUIDSYNTH_VERSION_NEW_API

  1144.                     fluid_synth_all_notes_off(f_synth, c);

  1145.                     fluid_synth_all_sounds_off(f_synth, c);

  1146. #else

  1147.                     fluid_synth_cc(f_synth, c, MIDI_CONTROL_ALL_SOUND_OFF, 0);

  1148.                     fluid_synth_cc(f_synth, c, MIDI_CONTROL_ALL_NOTES_OFF, 0);

  1149. #endif

  1150.                 }

  1151.             }

  1152. 

  1153.             fluid_synth_process(f_synth, frames, 0, nullptr, 2, outBuffer);

  1154.         }

  1155. 

  1156.         CARLA_PROCESS_CONTINUE_CHECK;

  1157. 

  1158.         // --------------------------------------------------------------------------------------------------------

  1159.         // Post-processing (balance and volume)

  1160. 

  1161.         if (m_active)

  1162.         {

  1163.             bool do_balance = (x_balanceLeft != -1.0 || x_balanceRight != 1.0);

  1164. 

  1165.             double bal_rangeL, bal_rangeR;

  1166.             float oldBufLeft[do_balance ? frames : 0];

  1167. 

  1168.             for (i=0; i < aOut.count; i++)

  1169.             {

  1170.                 // Balance

  1171.                 if (do_balance)

  1172.                 {

  1173.                     if (i%2 == 0)

  1174.                         memcpy(&oldBufLeft, outBuffer[i], sizeof(float)*frames);

  1175. 

  1176.                     bal_rangeL = (x_balanceLeft+1.0)/2;

  1177.                     bal_rangeR = (x_balanceRight+1.0)/2;

  1178. 

  1179.                     for (k=0; k < frames; k++)

  1180.                     {

  1181.                         if (i%2 == 0)

  1182.                         {

  1183.                             // left output

  1184.                             outBuffer[i][k]  = oldBufLeft[k]*(1.0-bal_rangeL);

  1185.                             outBuffer[i][k] += outBuffer[i+1][k]*(1.0-bal_rangeR);

  1186.                         }

  1187.                         else

  1188.                         {

  1189.                             // right

  1190.                             outBuffer[i][k]  = outBuffer[i][k]*bal_rangeR;

  1191.                             outBuffer[i][k] += oldBufLeft[k]*bal_rangeL;

  1192.                         }

  1193.                     }

  1194.                 }

  1195. 

  1196.                 // Volume, using fluidsynth internals

  1197.                 fluid_synth_set_gain(f_synth, x_volume);

  1198. 

  1199.                 // Output VU

  1200.                 if (x_engine->processMode() != PROCESS_MODE_CONTINUOUS_RACK)

  1201.                 {

  1202.                     for (k=0; i < 2 && k < frames; k++)

  1203.                     {

  1204.                         if (abs(outBuffer[i][k]) > aOutsPeak[i])

  1205.                             aOutsPeak[i] = abs(outBuffer[i][k]);

  1206.                     }

  1207.                 }

  1208.             }

  1209.         }

  1210.         else

  1211.         {

  1212.             // disable any output sound if not active

  1213.             for (i=0; i < aOut.count; i++)

  1214.                 carla_zeroF(outBuffer[i], frames);

  1215. 

  1216.             aOutsPeak[0] = 0.0;

  1217.             aOutsPeak[1] = 0.0;

  1218. 

  1219.         } // End of Post-processing

  1220. 

  1221.         CARLA_PROCESS_CONTINUE_CHECK;

  1222. 

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

  1224.         // Control Output

  1225. 

  1226.         if (m_active)

  1227.         {

  1228.             k = FluidSynthVoiceCount;

  1229.             paramBuffers[k] = fluid_synth_get_active_voice_count(f_synth);

  1230.             fixParameterValue(paramBuffers[k], param.ranges[k]);

  1231. 

  1232.             if (param.data[k].midiCC > 0)

  1233.             {

  1234.                 double value = (paramBuffers[k] - param.ranges[k].min) / (param.ranges[k].max - param.ranges[k].min);

  1235.                 param.portCout->writeEvent(CarlaEngineParameterChangeEvent, framesOffset, param.data[k].midiChannel, param.data[k].midiCC, value);

  1236.             }

  1237.         } // End of Control Output

  1238. 

  1239.         CARLA_PROCESS_CONTINUE_CHECK;

  1240. 

  1241.         // --------------------------------------------------------------------------------------------------------

  1242.         // Peak Values

  1243. 

  1244.         x_engine->setOutputPeak(m_id, 0, aOutsPeak[0]);

  1245.         x_engine->setOutputPeak(m_id, 1, aOutsPeak[1]);

  1246. 

  1247.         m_activeBefore = m_active;

  1248.     }

  1249. 

  1250.     // -------------------------------------------------------------------

  1251. 

  1252.     bool init(const char* const filename, const char* const name, const char* const label)

  1253.     {

  1254.         // ---------------------------------------------------------------

  1255.         // open soundfont

  1256. 

  1257.         f_id = fluid_synth_sfload(f_synth, filename, 0);

  1258. 

  1259.         if (f_id < 0)

  1260.         {

  1261.             x_engine->setLastError("Failed to load SoundFont file");

  1262.             return false;

  1263.         }

  1264. 

  1265.         // ---------------------------------------------------------------

  1266.         // get info

  1267. 

  1268.         m_filename = strdup(filename);

  1269.         m_label    = strdup(label);

  1270. 

  1271.         if (name)

  1272.             m_name = x_engine->getUniquePluginName(name);

  1273.         else

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

  1275. 

  1276.         // ---------------------------------------------------------------

  1277.         // register client

  1278. 

  1279.         x_client = x_engine->addClient(this);

  1280. 

  1281.         if (! x_client->isOk())

  1282.         {

  1283.             x_engine->setLastError("Failed to register plugin client");

  1284.             return false;

  1285.         }

  1286. 

  1287.         return true;

  1288.     }

  1289. 

  1290. private:

  1291.     enum FluidSynthInputParameters {

  1292.         FluidSynthReverbOnOff    = 0,

  1293.         FluidSynthReverbRoomSize = 1,

  1294.         FluidSynthReverbDamp     = 2,

  1295.         FluidSynthReverbLevel    = 3,

  1296.         FluidSynthReverbWidth    = 4,

  1297.         FluidSynthChorusOnOff    = 5,

  1298.         FluidSynthChorusNr       = 6,

  1299.         FluidSynthChorusLevel    = 7,

  1300.         FluidSynthChorusSpeedHz  = 8,

  1301.         FluidSynthChorusDepthMs  = 9,

  1302.         FluidSynthChorusType     = 10,

  1303.         FluidSynthPolyphony      = 11,

  1304.         FluidSynthInterpolation  = 12,

  1305.         FluidSynthVoiceCount     = 13,

  1306.         FluidSynthParametersMax  = 14

  1307.     };

  1308. 

  1309.     fluid_settings_t* f_settings;

  1310.     fluid_synth_t* f_synth;

  1311.     int f_id;

  1312. 

  1313.     double paramBuffers[FluidSynthParametersMax];

  1314. 

  1315.     const char* m_label;

  1316. };

  1317. 

  1318. /**@}*/

  1319. 

  1320. CARLA_BACKEND_END_NAMESPACE

  1321. 

  1322. #else // WANT_FLUIDSYNTH

  1323. #  warning fluidsynth not available (no SF2 support)

  1324. #endif

  1325. 

  1326. CARLA_BACKEND_START_NAMESPACE

  1327. 

  1328. CarlaPlugin* CarlaPlugin::newSF2(const initializer& init)

  1329. {

  1330.     qDebug("CarlaPlugin::newSF2(%p, \"%s\", \"%s\", \"%s\")", init.engine, init.filename, init.name, init.label);

  1331. 

  1332. #ifdef WANT_FLUIDSYNTH

  1333.     short id = init.engine->getNewPluginId();

  1334. 

  1335.     if (id < 0 || id > init.engine->maxPluginNumber())

  1336.     {

  1337.         init.engine->setLastError("Maximum number of plugins reached");

  1338.         return nullptr;

  1339.     }

  1340. 

  1341.     if (! fluid_is_soundfont(init.filename))

  1342.     {

  1343.         init.engine->setLastError("Requested file is not a valid SoundFont");

  1344.         return nullptr;

  1345.     }

  1346. 

  1347.     FluidSynthPlugin* const plugin = new FluidSynthPlugin(init.engine, id);

  1348. 

  1349.     if (! plugin->init(init.filename, init.name, init.label))

  1350.     {

  1351.         delete plugin;

  1352.         return nullptr;

  1353.     }

  1354. 

  1355.     plugin->reload();

  1356.     plugin->registerToOscControl();

  1357. 

  1358.     return plugin;

  1359. #else

  1360.     init.engine->setLastError("fluidsynth support not available");

  1361.     return nullptr;

  1362. #endif

  1363. }

  1364. 

  1365. CARLA_BACKEND_END_NAMESPACE