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Carla/source/backend/plugin/fluidsynth.cpp

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  1. /*

  2.  * Carla FluidSynth Plugin

  3.  * Copyright (C) 2011-2013 Filipe Coelho <falktx@falktx.com>

  4.  *

  5.  * This program is free software; you can redistribute it and/or

  6.  * modify it under the terms of the GNU General Public License as

  7.  * published by the Free Software Foundation; either version 2 of

  8.  * the License, or 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 GPL.txt file

  16.  */

  17. 

  18. #include "carla_plugin_internal.hpp"

  19. 

  20. #ifdef WANT_FLUIDSYNTH

  21. 

  22. #include <fluidsynth.h>

  23. 

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

  25. 

  26. CARLA_BACKEND_START_NAMESPACE

  27. 

  28. 

  29. /*!

  30.  * @defgroup CarlaBackendFluidSynthPlugin Carla Backend FluidSynth Plugin

  31.  *

  32.  * The Carla Backend FluidSynth Plugin.\n

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

  34.  * @{

  35.  */

  36. 

  37. class FluidSynthPlugin : public CarlaPlugin

  38. {

  39. public:

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

  41.         : CarlaPlugin(engine, id)

  42.     {

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

  44. 

  45.         m_type  = PLUGIN_SF2;

  46.         m_label = nullptr;

  47. 

  48.         // create settings

  49.         f_settings = new_fluid_settings();

  50. 

  51.         // define settings

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

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

  54. 

  55.         // create synth

  56.         f_synth = new_fluid_synth(f_settings);

  57. 

  58. #ifdef FLUIDSYNTH_VERSION_NEW_API

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

  60. #endif

  61. 

  62.         // set default values

  63.         fluid_synth_set_reverb_on(f_synth, 0);

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

  65. 

  66.         fluid_synth_set_chorus_on(f_synth, 0);

  67.         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);

  68. 

  69.         fluid_synth_set_polyphony(f_synth, 64);

  70. 

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

  72.             fluid_synth_set_interp_method(f_synth, i, FLUID_INTERP_DEFAULT);

  73.     }

  74. 

  75.     ~FluidSynthPlugin()

  76.     {

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

  78. 

  79.         if (m_label)

  80.             free((void*)m_label);

  81. 

  82.         delete_fluid_synth(f_synth);

  83.         delete_fluid_settings(f_settings);

  84.     }

  85. 

  86.     // -------------------------------------------------------------------

  87.     // Information (base)

  88. 

  89.     PluginCategory category()

  90.     {

  91.         return PLUGIN_CATEGORY_SYNTH;

  92.     }

  93. 

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

  95.     // Information (count)

  96. 

  97.     uint32_t parameterScalePointCount(const uint32_t parameterId)

  98.     {

  99.         CARLA_ASSERT(parameterId < param.count);

  100. 

  101.         switch (parameterId)

  102.         {

  103.         case FluidSynthChorusType:

  104.             return 2;

  105.         case FluidSynthInterpolation:

  106.             return 4;

  107.         default:

  108.             return 0;

  109.         }

  110.     }

  111. 

  112.     // -------------------------------------------------------------------

  113.     // Information (per-plugin data)

  114. 

  115.     double getParameterValue(const uint32_t parameterId)

  116.     {

  117.         CARLA_ASSERT(parameterId < param.count);

  118. 

  119.         return paramBuffers[parameterId];

  120.     }

  121. 

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

  123.     {

  124.         CARLA_ASSERT(parameterId < param.count);

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

  126. 

  127.         switch (parameterId)

  128.         {

  129.         case FluidSynthChorusType:

  130.             switch (scalePointId)

  131.             {

  132.             case 0:

  133.                 return FLUID_CHORUS_MOD_SINE;

  134.             case 1:

  135.                 return FLUID_CHORUS_MOD_TRIANGLE;

  136.             default:

  137.                 return FLUID_CHORUS_DEFAULT_TYPE;

  138.             }

  139.         case FluidSynthInterpolation:

  140.             switch (scalePointId)

  141.             {

  142.             case 0:

  143.                 return FLUID_INTERP_NONE;

  144.             case 1:

  145.                 return FLUID_INTERP_LINEAR;

  146.             case 2:

  147.                 return FLUID_INTERP_4THORDER;

  148.             case 3:

  149.                 return FLUID_INTERP_7THORDER;

  150.             default:

  151.                 return FLUID_INTERP_DEFAULT;

  152.             }

  153.         default:

  154.             return 0.0;

  155.         }

  156.     }

  157. 

  158.     void getLabel(char* const strBuf)

  159.     {

  160.         if (m_label)

  161.             strncpy(strBuf, m_label, STR_MAX);

  162.         else

  163.             CarlaPlugin::getLabel(strBuf);

  164.     }

  165. 

  166.     void getMaker(char* const strBuf)

  167.     {

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

  169.     }

  170. 

  171.     void getCopyright(char* const strBuf)

  172.     {

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

  174.     }

  175. 

  176.     void getRealName(char* const strBuf)

  177.     {

  178.         getLabel(strBuf);

  179.     }

  180. 

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

  182.     {

  183.         CARLA_ASSERT(parameterId < param.count);

  184. 

  185.         switch (parameterId)

  186.         {

  187.         case FluidSynthReverbOnOff:

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

  189.             break;

  190.         case FluidSynthReverbRoomSize:

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

  192.             break;

  193.         case FluidSynthReverbDamp:

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

  195.             break;

  196.         case FluidSynthReverbLevel:

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

  198.             break;

  199.         case FluidSynthReverbWidth:

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

  201.             break;

  202.         case FluidSynthChorusOnOff:

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

  204.             break;

  205.         case FluidSynthChorusNr:

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

  207.             break;

  208.         case FluidSynthChorusLevel:

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

  210.             break;

  211.         case FluidSynthChorusSpeedHz:

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

  213.             break;

  214.         case FluidSynthChorusDepthMs:

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

  216.             break;

  217.         case FluidSynthChorusType:

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

  219.             break;

  220.         case FluidSynthPolyphony:

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

  222.             break;

  223.         case FluidSynthInterpolation:

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

  225.             break;

  226.         case FluidSynthVoiceCount:

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

  228.             break;

  229.         default:

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

  231.             break;

  232.         }

  233.     }

  234. 

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

  236.     {

  237.         CARLA_ASSERT(parameterId < param.count);

  238. 

  239.         switch (parameterId)

  240.         {

  241.         case FluidSynthChorusSpeedHz:

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

  243.             break;

  244.         case FluidSynthChorusDepthMs:

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

  246.             break;

  247.         default:

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

  249.             break;

  250.         }

  251.     }

  252. 

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

  254.     {

  255.         CARLA_ASSERT(parameterId < param.count);

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

  257. 

  258.         switch (parameterId)

  259.         {

  260.         case FluidSynthChorusType:

  261.             switch (scalePointId)

  262.             {

  263.             case 0:

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

  265.                 return;

  266.             case 1:

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

  268.                 return;

  269.             }

  270.         case FluidSynthInterpolation:

  271.             switch (scalePointId)

  272.             {

  273.             case 0:

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

  275.                 return;

  276.             case 1:

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

  278.                 return;

  279.             case 2:

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

  281.                 return;

  282.             case 3:

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

  284.                 return;

  285.             }

  286.         }

  287. 

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

  289.     }

  290. 

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

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

  293. 

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

  295.     {

  296.         CARLA_ASSERT(parameterId < param.count);

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

  298. 

  299.         switch (parameterId)

  300.         {

  301.         case FluidSynthReverbOnOff:

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

  303.             fluid_synth_set_reverb_on(f_synth, value);

  304.             break;

  305. 

  306.         case FluidSynthReverbRoomSize:

  307.         case FluidSynthReverbDamp:

  308.         case FluidSynthReverbLevel:

  309.         case FluidSynthReverbWidth:

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

  311.             break;

  312. 

  313.         case FluidSynthChorusOnOff:

  314.         {

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

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

  317.             fluid_synth_set_chorus_on(f_synth, value);

  318.             break;

  319.         }

  320. 

  321.         case FluidSynthChorusNr:

  322.         case FluidSynthChorusLevel:

  323.         case FluidSynthChorusSpeedHz:

  324.         case FluidSynthChorusDepthMs:

  325.         case FluidSynthChorusType:

  326.         {

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

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

  329.             break;

  330.         }

  331. 

  332.         case FluidSynthPolyphony:

  333.         {

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

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

  336.             break;

  337.         }

  338. 

  339.         case FluidSynthInterpolation:

  340.         {

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

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

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

  344.             break;

  345.         }

  346. 

  347.         default:

  348.             break;

  349.         }

  350. 

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

  352.     }

  353. 

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

  355.     {

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

  357. 

  358.         if (index < -1)

  359.             index = -1;

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

  361.             return;

  362. 

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

  364.             return;

  365. 

  366.         if (index >= 0)

  367.         {

  368.             if (x_engine->isOffline())

  369.             {

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

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

  372.             }

  373.             else

  374.             {

  375.                 const ScopedDisabler m(this, block);

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

  377.             }

  378.         }

  379. 

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

  381.     }

  382. 

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

  384.     // Plugin state

  385. 

  386.     void reload()

  387.     {

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

  389.         CARLA_ASSERT(f_synth);

  390. 

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

  392. 

  393.         // Safely disable plugin for reload

  394.         const ScopedDisabler m(this);

  395. 

  396.         if (x_client->isActive())

  397.             x_client->deactivate();

  398. 

  399.         // Remove client ports

  400.         removeClientPorts();

  401. 

  402.         // Delete old data

  403.         deleteBuffers();

  404. 

  405.         uint32_t aOuts, params, j;

  406.         aOuts  = 2;

  407.         params = FluidSynthParametersMax;

  408. 

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

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

  411. 

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

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

  414. 

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

  416.         CarlaString portName;

  417. 

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

  419.         // Audio Outputs

  420. 

  421.         {

  422.             portName.clear();

  423. 

  424.             if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  425.             {

  426.                 portName  = m_name;

  427.                 portName += ":";

  428.             }

  429. 

  430.             portName += "out-left";

  431.             portName.truncate(portNameSize);

  432. 

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

  434.             aOut.rindexes[0] = 0;

  435.         }

  436. 

  437.         {

  438.             portName.clear();

  439. 

  440.             if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  441.             {

  442.                 portName  = m_name;

  443.                 portName += ":";

  444.             }

  445. 

  446.             portName += "out-right";

  447.             portName.truncate(portNameSize);

  448. 

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

  450.             aOut.rindexes[1] = 1;

  451.         }

  452. 

  453.         // ---------------------------------------

  454.         // MIDI Input

  455. 

  456.         {

  457.             portName.clear();

  458. 

  459.             if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  460.             {

  461.                 portName  = m_name;

  462.                 portName += ":";

  463.             }

  464. 

  465.             portName += "midi-in";

  466.             portName.truncate(portNameSize);

  467. 

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

  469.         }

  470. 

  471.         // ---------------------------------------

  472.         // Parameters

  473. 

  474.         {

  475.             portName.clear();

  476. 

  477.             if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  478.             {

  479.                 portName  = m_name;

  480.                 portName += ":";

  481.             }

  482. 

  483.             portName += "control-in";

  484.             portName.truncate(portNameSize);

  485. 

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

  487.         }

  488. 

  489.         {

  490.             portName.clear();

  491. 

  492.             if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  493.             {

  494.                 portName  = m_name;

  495.                 portName += ":";

  496.             }

  497. 

  498.             portName += "control-out";

  499.             portName.truncate(portNameSize);

  500. 

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

  502.         }

  503. 

  504.         // ----------------------

  505.         j = FluidSynthReverbOnOff;

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

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

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

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

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

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

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

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

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

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

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

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

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

  519. 

  520.         // ----------------------

  521.         j = FluidSynthReverbRoomSize;

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

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

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

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

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

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

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

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

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

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

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

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

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

  535. 

  536.         // ----------------------

  537.         j = FluidSynthReverbDamp;

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

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

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

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

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

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

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

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

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

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

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

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

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

  551. 

  552.         // ----------------------

  553.         j = FluidSynthReverbLevel;

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

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

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

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

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

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

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

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

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

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

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

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

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

  567. 

  568.         // ----------------------

  569.         j = FluidSynthReverbWidth;

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

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

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

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

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

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

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

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

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

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

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

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

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

  583. 

  584.         // ----------------------

  585.         j = FluidSynthChorusOnOff;

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

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

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

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

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

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

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

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

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

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

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

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

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

  599. 

  600.         // ----------------------

  601.         j = FluidSynthChorusNr;

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

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

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

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

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

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

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

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

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

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

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

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

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

  615. 

  616.         // ----------------------

  617.         j = FluidSynthChorusLevel;

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

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

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

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

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

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

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

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

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

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

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

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

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

  631. 

  632.         // ----------------------

  633.         j = FluidSynthChorusSpeedHz;

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

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

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

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

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

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

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

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

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

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

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

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

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

  647. 

  648.         // ----------------------

  649.         j = FluidSynthChorusDepthMs;

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

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

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

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

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

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

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

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

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

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

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

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

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

  663. 

  664.         // ----------------------

  665.         j = FluidSynthChorusType;

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

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

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

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

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

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

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

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

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

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

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

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

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

  679. 

  680.         // ----------------------

  681.         j = FluidSynthPolyphony;

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

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

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

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

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

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

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

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

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

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

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

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

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

  695. 

  696.         // ----------------------

  697.         j = FluidSynthInterpolation;

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

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

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

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

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

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

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

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

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

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

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

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

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

  711. 

  712.         // ----------------------

  713.         j = FluidSynthVoiceCount;

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

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

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

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

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

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

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

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

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

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

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

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

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

  727. 

  728.         // ---------------------------------------

  729. 

  730.         aOut.count  = aOuts;

  731.         param.count = params;

  732. 

  733.         // plugin checks

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

  735. 

  736.         m_hints |= PLUGIN_IS_SYNTH;

  737.         m_hints |= PLUGIN_CAN_VOLUME;

  738.         m_hints |= PLUGIN_CAN_BALANCE;

  739.         m_hints |= PLUGIN_CAN_FORCE_STEREO;

  740. 

  741.         reloadPrograms(true);

  742. 

  743.         x_client->activate();

  744. 

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

  746.     }

  747. 

  748.     void reloadPrograms(const bool init)

  749.     {

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

  751. 

  752.         // Delete old programs

  753.         if (midiprog.count > 0)

  754.         {

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

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

  757. 

  758.             delete[] midiprog.data;

  759.         }

  760. 

  761.         midiprog.count = 0;

  762.         midiprog.data  = nullptr;

  763. 

  764.         // Query new programs

  765.         fluid_sfont_t* f_sfont;

  766.         fluid_preset_t f_preset;

  767.         bool hasDrums = false;

  768. 

  769.         f_sfont = fluid_synth_get_sfont_by_id(f_synth, f_id);

  770. 

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

  772.         f_sfont->iteration_start(f_sfont);

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

  774.             midiprog.count += 1;

  775. 

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

  777.         CARLA_ASSERT(midiprog.count > 0);

  778. 

  779.         if (midiprog.count > 0)

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

  781. 

  782.         // Update data

  783.         uint32_t i = 0;

  784.         f_sfont->iteration_start(f_sfont);

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

  786.         {

  787.             CARLA_ASSERT(i < midiprog.count);

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

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

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

  791. 

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

  793.                 hasDrums = true;

  794. 

  795.             i++;

  796.         }

  797. 

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

  799. 

  800.         // Update OSC Names

  801.         if (x_engine->isOscControlRegistered())

  802.         {

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

  804. 

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

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

  807.         }

  808. 

  809.         if (init)

  810.         {

  811.             fluid_synth_program_reset(f_synth);

  812. 

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

  814.             {

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

  816. #ifdef FLUIDSYNTH_VERSION_NEW_API

  817.                 fluid_synth_set_channel_type(f_synth, i, CHANNEL_TYPE_MELODIC);

  818. #endif

  819.             }

  820. 

  821.             if (hasDrums)

  822.             {

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

  824. #ifdef FLUIDSYNTH_VERSION_NEW_API

  825.                 fluid_synth_set_channel_type(f_synth, 9, CHANNEL_TYPE_DRUM);

  826. #endif

  827.             }

  828.             else

  829.             {

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

  831. #ifdef FLUIDSYNTH_VERSION_NEW_API

  832.                 fluid_synth_set_channel_type(f_synth, 9, CHANNEL_TYPE_MELODIC);

  833. #endif

  834.             }

  835. 

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

  837.         }

  838.         else

  839.         {

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

  841.         }

  842.     }

  843. 

  844.     // -------------------------------------------------------------------

  845.     // Plugin processing

  846. 

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

  848.     {

  849.         uint32_t i, k;

  850.         uint32_t midiEventCount = 0;

  851. 

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

  853. 

  854.         CARLA_PROCESS_CONTINUE_CHECK;

  855. 

  856.         // --------------------------------------------------------------------------------------------------------

  857.         // Parameters Input [Automation]

  858. 

  859.         if (m_active && m_activeBefore)

  860.         {

  861.             bool allNotesOffSent = false;

  862. 

  863.             const CarlaEngineControlEvent* cinEvent;

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

  865. 

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

  867. 

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

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

  870. 

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

  872.             {

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

  874. 

  875.                 if (! cinEvent)

  876.                     continue;

  877. 

  878.                 time = cinEvent->time - framesOffset;

  879. 

  880.                 if (time >= frames)

  881.                     continue;

  882. 

  883.                 // Control change

  884.                 switch (cinEvent->type)

  885.                 {

  886.                 case CarlaEngineNullEvent:

  887.                     break;

  888. 

  889.                 case CarlaEngineParameterChangeEvent:

  890.                 {

  891.                     double value;

  892. 

  893.                     // Control backend stuff

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

  895.                     {

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

  897.                         {

  898.                             value = cinEvent->value;

  899.                             setDryWet(value, false, false);

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

  901.                             continue;

  902.                         }

  903. 

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

  905.                         {

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

  907.                             setVolume(value, false, false);

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

  909.                             continue;

  910.                         }

  911. 

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

  913.                         {

  914.                             double left, right;

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

  916. 

  917.                             if (value < 0.0)

  918.                             {

  919.                                 left  = -1.0;

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

  921.                             }

  922.                             else if (value > 0.0)

  923.                             {

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

  925.                                 right = 1.0;

  926.                             }

  927.                             else

  928.                             {

  929.                                 left  = -1.0;

  930.                                 right = 1.0;

  931.                             }

  932. 

  933.                             setBalanceLeft(left, false, false);

  934.                             setBalanceRight(right, false, false);

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

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

  937.                             continue;

  938.                         }

  939.                     }

  940. 

  941.                     // Control plugin parameters

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

  943.                     {

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

  945.                             continue;

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

  947.                             continue;

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

  949.                             continue;

  950. 

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

  952.                         {

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

  954.                             {

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

  956.                             }

  957.                             else

  958.                             {

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

  960. 

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

  962.                                     value = rint(value);

  963.                             }

  964. 

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

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

  967.                         }

  968.                     }

  969. 

  970.                     break;

  971.                 }

  972. 

  973.                 case CarlaEngineMidiBankChangeEvent:

  974.                     if (cinEvent->channel < 16)

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

  976.                     break;

  977. 

  978.                 case CarlaEngineMidiProgramChangeEvent:

  979.                     if (cinEvent->channel < 16)

  980.                     {

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

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

  983. 

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

  985.                         {

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

  987.                             {

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

  989.                                 {

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

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

  992.                                 }

  993.                                 else

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

  995. 

  996.                                 break;

  997.                             }

  998.                         }

  999.                     }

  1000.                     break;

  1001. 

  1002.                 case CarlaEngineAllSoundOffEvent:

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

  1004.                     {

  1005.                         if (! allNotesOffSent)

  1006.                             sendMidiAllNotesOff();

  1007. 

  1008.                         postponeEvent(PluginPostEventParameterChange, PARAMETER_ACTIVE, 0, 0.0);

  1009.                         postponeEvent(PluginPostEventParameterChange, PARAMETER_ACTIVE, 0, 1.0);

  1010. 

  1011.                         allNotesOffSent = true;

  1012.                     }

  1013.                     break;

  1014. 

  1015.                 case CarlaEngineAllNotesOffEvent:

  1016.                     if (cinEvent->channel == m_ctrlInChannel)

  1017.                     {

  1018.                         if (! allNotesOffSent)

  1019.                             sendMidiAllNotesOff();

  1020. 

  1021.                         allNotesOffSent = true;

  1022.                     }

  1023.                     break;

  1024.                 }

  1025.             }

  1026.         } // End of Parameters Input

  1027. 

  1028.         CARLA_PROCESS_CONTINUE_CHECK;

  1029. 

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

  1031.         // MIDI Input

  1032. 

  1033.         if (m_active && m_activeBefore)

  1034.         {

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

  1036.             // MIDI Input (External)

  1037. 

  1038.             {

  1039.                 engineMidiLock();

  1040. 

  1041.                 for (i=0; i < MAX_MIDI_EVENTS && midiEventCount < MAX_MIDI_EVENTS; i++)

  1042.                 {

  1043.                     if (extMidiNotes[i].channel < 0)

  1044.                         break;

  1045. 

  1046.                     if (extMidiNotes[i].velo)

  1047.                         fluid_synth_noteon(f_synth, m_ctrlInChannel, extMidiNotes[i].note, extMidiNotes[i].velo);

  1048.                     else

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

  1050. 

  1051.                     extMidiNotes[i].channel = -1; // mark as invalid

  1052.                     midiEventCount += 1;

  1053.                 }

  1054. 

  1055.                 engineMidiUnlock();

  1056. 

  1057.             } // End of MIDI Input (External)

  1058. 

  1059.             CARLA_PROCESS_CONTINUE_CHECK;

  1060. 

  1061.             // ----------------------------------------------------------------------------------------------------

  1062.             // MIDI Input (System)

  1063. 

  1064.             {

  1065.                 const CarlaEngineMidiEvent* minEvent;

  1066.                 uint32_t time, nEvents = midi.portMin->getEventCount();

  1067. 

  1068.                 for (i=0; i < nEvents && midiEventCount < MAX_MIDI_EVENTS; i++)

  1069.                 {

  1070.                     minEvent = midi.portMin->getEvent(i);

  1071. 

  1072.                     if (! minEvent)

  1073.                         continue;

  1074. 

  1075.                     time = minEvent->time - framesOffset;

  1076. 

  1077.                     if (time >= frames)

  1078.                         continue;

  1079. 

  1080.                     uint8_t status  = minEvent->data[0];

  1081.                     uint8_t channel = status & 0x0F;

  1082. 

  1083.                     // Fix bad note-off

  1084.                     if (MIDI_IS_STATUS_NOTE_ON(status) && minEvent->data[2] == 0)

  1085.                         status -= 0x10;

  1086. 

  1087.                     if (MIDI_IS_STATUS_NOTE_OFF(status))

  1088.                     {

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

  1090. 

  1091.                         fluid_synth_noteoff(f_synth, channel, note);

  1092. 

  1093.                         postponeEvent(PluginPostEventNoteOff, channel, note, 0.0);

  1094.                     }

  1095.                     else if (MIDI_IS_STATUS_NOTE_ON(status))

  1096.                     {

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

  1098.                         uint8_t velo = minEvent->data[2];

  1099. 

  1100.                         fluid_synth_noteon(f_synth, channel, note, velo);

  1101. 

  1102.                         postponeEvent(PluginPostEventNoteOn, channel, note, velo);

  1103.                     }

  1104.                     else if (MIDI_IS_STATUS_POLYPHONIC_AFTERTOUCH(status))

  1105.                     {

  1106.                         // TODO, not in fluidsynth API?

  1107.                     }

  1108.                     else if (MIDI_IS_STATUS_AFTERTOUCH(status))

  1109.                     {

  1110.                         uint8_t pressure = minEvent->data[1];

  1111. 

  1112.                         fluid_synth_channel_pressure(f_synth, channel, pressure);

  1113.                     }

  1114.                     else if (MIDI_IS_STATUS_PITCH_WHEEL_CONTROL(status))

  1115.                     {

  1116.                         uint8_t lsb = minEvent->data[1];

  1117.                         uint8_t msb = minEvent->data[2];

  1118. 

  1119.                         fluid_synth_pitch_bend(f_synth, channel, (msb << 7) | lsb);

  1120.                     }

  1121.                     else

  1122.                         continue;

  1123. 

  1124.                     midiEventCount += 1;

  1125.                 }

  1126.             } // End of MIDI Input (System)

  1127. 

  1128.         } // End of MIDI Input

  1129. 

  1130.         CARLA_PROCESS_CONTINUE_CHECK;

  1131. 

  1132.         // --------------------------------------------------------------------------------------------------------

  1133.         // Plugin processing

  1134. 

  1135.         if (m_active)

  1136.         {

  1137.             if (! m_activeBefore)

  1138.             {

  1139.                 for (int c=0; c < MAX_MIDI_CHANNELS; c++)

  1140.                 {

  1141. #ifdef FLUIDSYNTH_VERSION_NEW_API

  1142.                     fluid_synth_all_notes_off(f_synth, c);

  1143.                     fluid_synth_all_sounds_off(f_synth, c);

  1144. #else

  1145.                     fluid_synth_cc(f_synth, c, MIDI_CONTROL_ALL_SOUND_OFF, 0);

  1146.                     fluid_synth_cc(f_synth, c, MIDI_CONTROL_ALL_NOTES_OFF, 0);

  1147. #endif

  1148.                 }

  1149.             }

  1150. 

  1151.             fluid_synth_process(f_synth, frames, 0, nullptr, 2, outBuffer);

  1152.         }

  1153. 

  1154.         CARLA_PROCESS_CONTINUE_CHECK;

  1155. 

  1156.         // --------------------------------------------------------------------------------------------------------

  1157.         // Post-processing (balance and volume)

  1158. 

  1159.         if (m_active)

  1160.         {

  1161.             bool do_balance = (x_balanceLeft != -1.0 || x_balanceRight != 1.0);

  1162. 

  1163.             double bal_rangeL, bal_rangeR;

  1164.             float oldBufLeft[do_balance ? frames : 0];

  1165. 

  1166.             for (i=0; i < aOut.count; i++)

  1167.             {

  1168.                 // Balance

  1169.                 if (do_balance)

  1170.                 {

  1171.                     if (i%2 == 0)

  1172.                         memcpy(&oldBufLeft, outBuffer[i], sizeof(float)*frames);

  1173. 

  1174.                     bal_rangeL = (x_balanceLeft+1.0)/2;

  1175.                     bal_rangeR = (x_balanceRight+1.0)/2;

  1176. 

  1177.                     for (k=0; k < frames; k++)

  1178.                     {

  1179.                         if (i%2 == 0)

  1180.                         {

  1181.                             // left output

  1182.                             outBuffer[i][k]  = oldBufLeft[k]*(1.0-bal_rangeL);

  1183.                             outBuffer[i][k] += outBuffer[i+1][k]*(1.0-bal_rangeR);

  1184.                         }

  1185.                         else

  1186.                         {

  1187.                             // right

  1188.                             outBuffer[i][k]  = outBuffer[i][k]*bal_rangeR;

  1189.                             outBuffer[i][k] += oldBufLeft[k]*bal_rangeL;

  1190.                         }

  1191.                     }

  1192.                 }

  1193. 

  1194.                 // Volume, using fluidsynth internals

  1195.                 fluid_synth_set_gain(f_synth, x_volume);

  1196. 

  1197.                 // Output VU

  1198.                 if (x_engine->getOptions().processMode != PROCESS_MODE_CONTINUOUS_RACK)

  1199.                 {

  1200.                     for (k=0; i < 2 && k < frames; k++)

  1201.                     {

  1202.                         if (std::abs(outBuffer[i][k]) > aOutsPeak[i])

  1203.                             aOutsPeak[i] = std::abs(outBuffer[i][k]);

  1204.                     }

  1205.                 }

  1206.             }

  1207.         }

  1208.         else

  1209.         {

  1210.             // disable any output sound if not active

  1211.             for (i=0; i < aOut.count; i++)

  1212.                 carla_zeroF(outBuffer[i], frames);

  1213. 

  1214.             aOutsPeak[0] = 0.0;

  1215.             aOutsPeak[1] = 0.0;

  1216. 

  1217.         } // End of Post-processing

  1218. 

  1219.         CARLA_PROCESS_CONTINUE_CHECK;

  1220. 

  1221.         // --------------------------------------------------------------------------------------------------------

  1222.         // Control Output

  1223. 

  1224.         if (m_active)

  1225.         {

  1226.             k = FluidSynthVoiceCount;

  1227.             paramBuffers[k] = fluid_synth_get_active_voice_count(f_synth);

  1228.             fixParameterValue(paramBuffers[k], param.ranges[k]);

  1229. 

  1230.             if (param.data[k].midiCC > 0)

  1231.             {

  1232.                 double value = (paramBuffers[k] - param.ranges[k].min) / (param.ranges[k].max - param.ranges[k].min);

  1233.                 param.portCout->writeEvent(CarlaEngineParameterChangeEvent, framesOffset, param.data[k].midiChannel, param.data[k].midiCC, value);

  1234.             }

  1235.         } // End of Control Output

  1236. 

  1237.         CARLA_PROCESS_CONTINUE_CHECK;

  1238. 

  1239.         // --------------------------------------------------------------------------------------------------------

  1240.         // Peak Values

  1241. 

  1242.         x_engine->setOutputPeak(m_id, 0, aOutsPeak[0]);

  1243.         x_engine->setOutputPeak(m_id, 1, aOutsPeak[1]);

  1244. 

  1245.         m_activeBefore = m_active;

  1246.     }

  1247. 

  1248.     // -------------------------------------------------------------------

  1249. 

  1250.     bool init(const char* const filename, const char* const name, const char* const label)

  1251.     {

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

  1253.         // open soundfont

  1254. 

  1255.         f_id = fluid_synth_sfload(f_synth, filename, 0);

  1256. 

  1257.         if (f_id < 0)

  1258.         {

  1259.             x_engine->setLastError("Failed to load SoundFont file");

  1260.             return false;

  1261.         }

  1262. 

  1263.         // ---------------------------------------------------------------

  1264.         // get info

  1265. 

  1266.         m_filename = strdup(filename);

  1267.         m_label    = strdup(label);

  1268. 

  1269.         if (name)

  1270.             m_name = x_engine->getUniquePluginName(name);

  1271.         else

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

  1273. 

  1274.         // ---------------------------------------------------------------

  1275.         // register client

  1276. 

  1277.         x_client = x_engine->addClient(this);

  1278. 

  1279.         if (! x_client->isOk())

  1280.         {

  1281.             x_engine->setLastError("Failed to register plugin client");

  1282.             return false;

  1283.         }

  1284. 

  1285.         return true;

  1286.     }

  1287. 

  1288. private:

  1289.     enum FluidSynthInputParameters {

  1290.         FluidSynthReverbOnOff    = 0,

  1291.         FluidSynthReverbRoomSize = 1,

  1292.         FluidSynthReverbDamp     = 2,

  1293.         FluidSynthReverbLevel    = 3,

  1294.         FluidSynthReverbWidth    = 4,

  1295.         FluidSynthChorusOnOff    = 5,

  1296.         FluidSynthChorusNr       = 6,

  1297.         FluidSynthChorusLevel    = 7,

  1298.         FluidSynthChorusSpeedHz  = 8,

  1299.         FluidSynthChorusDepthMs  = 9,

  1300.         FluidSynthChorusType     = 10,

  1301.         FluidSynthPolyphony      = 11,

  1302.         FluidSynthInterpolation  = 12,

  1303.         FluidSynthVoiceCount     = 13,

  1304.         FluidSynthParametersMax  = 14

  1305.     };

  1306. 

  1307.     fluid_settings_t* f_settings;

  1308.     fluid_synth_t* f_synth;

  1309.     int f_id;

  1310. 

  1311.     double paramBuffers[FluidSynthParametersMax];

  1312. 

  1313.     const char* m_label;

  1314. };

  1315. 

  1316. /**@}*/

  1317. 

  1318. CARLA_BACKEND_END_NAMESPACE

  1319. 

  1320. #else // WANT_FLUIDSYNTH

  1321. //#  warning fluidsynth not available (no SF2 support)

  1322. #endif

  1323. 

  1324. CARLA_BACKEND_START_NAMESPACE

  1325. 

  1326. CarlaPlugin* CarlaPlugin::newSF2(const Initializer& init)

  1327. {

  1328.     qDebug("CarlaPlugin::newSF2(%p, \"%s\", \"%s\", \"%s\")", init.engine, init.filename, init.name, init.label);

  1329. 

  1330. #ifdef WANT_FLUIDSYNTH

  1331.     short id = init.engine->getNewPluginId();

  1332. 

  1333.     if (id < 0 || id > init.engine->maxPluginNumber())

  1334.     {

  1335.         init.engine->setLastError("Maximum number of plugins reached");

  1336.         return nullptr;

  1337.     }

  1338. 

  1339.     if (! fluid_is_soundfont(init.filename))

  1340.     {

  1341.         init.engine->setLastError("Requested file is not a valid SoundFont");

  1342.         return nullptr;

  1343.     }

  1344. 

  1345.     FluidSynthPlugin* const plugin = new FluidSynthPlugin(init.engine, id);

  1346. 

  1347.     if (! plugin->init(init.filename, init.name, init.label))

  1348.     {

  1349.         delete plugin;

  1350.         return nullptr;

  1351.     }

  1352. 

  1353.     plugin->reload();

  1354.     plugin->registerToOscClient();

  1355. 

  1356.     return plugin;

  1357. #else

  1358.     init.engine->setLastError("fluidsynth support not available");

  1359.     return nullptr;

  1360. #endif

  1361. }

  1362. 

  1363. CARLA_BACKEND_END_NAMESPACE