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Carla/source/backend/plugin/FluidSynthPlugin.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 "CarlaPluginInternal.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. class FluidSynthPlugin : public CarlaPlugin

  29. {

  30. public:

  31.     FluidSynthPlugin(CarlaEngine* const engine, const unsigned int id, const bool use16Outs)

  32.         : CarlaPlugin(engine, id),

  33.           kUses16Outs(use16Outs),

  34.           fSettings(nullptr),

  35.           fSynth(nullptr),

  36.           fSynthId(-1),

  37.           fAudio16Buffers(nullptr)

  38.     {

  39.         carla_debug("FluidSynthPlugin::FluidSynthPlugin(%p, %i, %s)", engine, id,  bool2str(use16Outs));

  40. 

  41.         // create settings

  42.         fSettings = new_fluid_settings();

  43. 

  44.         // define settings

  45.         fluid_settings_setint(fSettings, "synth.audio-channels", use16Outs ? 16 : 1);

  46.         fluid_settings_setint(fSettings, "synth.audio-groups", use16Outs ? 16 : 1);

  47.         fluid_settings_setnum(fSettings, "synth.sample-rate", kData->engine->getSampleRate());

  48.         fluid_settings_setint(fSettings, "synth.threadsafe-api ", 0);

  49. 

  50.         // create synth

  51.         fSynth = new_fluid_synth(fSettings);

  52. 

  53. #ifdef FLUIDSYNTH_VERSION_NEW_API

  54.         fluid_synth_set_sample_rate(fSynth, kData->engine->getSampleRate());

  55. #endif

  56. 

  57.         // set default values

  58.         fluid_synth_set_reverb_on(fSynth, 0);

  59.         fluid_synth_set_reverb(fSynth, FLUID_REVERB_DEFAULT_ROOMSIZE, FLUID_REVERB_DEFAULT_DAMP, FLUID_REVERB_DEFAULT_WIDTH, FLUID_REVERB_DEFAULT_LEVEL);

  60. 

  61.         fluid_synth_set_chorus_on(fSynth, 0);

  62.         fluid_synth_set_chorus(fSynth, FLUID_CHORUS_DEFAULT_N, FLUID_CHORUS_DEFAULT_LEVEL, FLUID_CHORUS_DEFAULT_SPEED, FLUID_CHORUS_DEFAULT_DEPTH, FLUID_CHORUS_DEFAULT_TYPE);

  63. 

  64.         fluid_synth_set_polyphony(fSynth, 64);

  65. 

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

  67.             fluid_synth_set_interp_method(fSynth, i, FLUID_INTERP_DEFAULT);

  68.     }

  69. 

  70.     ~FluidSynthPlugin()

  71.     {

  72.         carla_debug("FluidSynthPlugin::~FluidSynthPlugin()");

  73. 

  74.         delete_fluid_synth(fSynth);

  75.         delete_fluid_settings(fSettings);

  76. 

  77.         deleteBuffers();

  78.     }

  79. 

  80.     // -------------------------------------------------------------------

  81.     // Information (base)

  82. 

  83.     PluginType type() const

  84.     {

  85.         return PLUGIN_SF2;

  86.     }

  87. 

  88.     PluginCategory category() const

  89.     {

  90.         return PLUGIN_CATEGORY_SYNTH;

  91.     }

  92. 

  93.     // -------------------------------------------------------------------

  94.     // Information (count)

  95. 

  96.     uint32_t parameterScalePointCount(const uint32_t parameterId) const

  97.     {

  98.         CARLA_ASSERT(parameterId < kData->param.count);

  99. 

  100.         switch (parameterId)

  101.         {

  102.         case FluidSynthChorusType:

  103.             return 2;

  104.         case FluidSynthInterpolation:

  105.             return 4;

  106.         default:

  107.             return 0;

  108.         }

  109.     }

  110. 

  111.     // -------------------------------------------------------------------

  112.     // Information (per-plugin data)

  113. 

  114.     float getParameterValue(const uint32_t parameterId)

  115.     {

  116.         CARLA_ASSERT(parameterId < kData->param.count);

  117. 

  118.         return fParamBuffers[parameterId];

  119.     }

  120. 

  121.     float getParameterScalePointValue(const uint32_t parameterId, const uint32_t scalePointId)

  122.     {

  123.         CARLA_ASSERT(parameterId < kData->param.count);

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

  125. 

  126.         switch (parameterId)

  127.         {

  128.         case FluidSynthChorusType:

  129.             switch (scalePointId)

  130.             {

  131.             case 0:

  132.                 return FLUID_CHORUS_MOD_SINE;

  133.             case 1:

  134.                 return FLUID_CHORUS_MOD_TRIANGLE;

  135.             default:

  136.                 return FLUID_CHORUS_DEFAULT_TYPE;

  137.             }

  138.         case FluidSynthInterpolation:

  139.             switch (scalePointId)

  140.             {

  141.             case 0:

  142.                 return FLUID_INTERP_NONE;

  143.             case 1:

  144.                 return FLUID_INTERP_LINEAR;

  145.             case 2:

  146.                 return FLUID_INTERP_4THORDER;

  147.             case 3:

  148.                 return FLUID_INTERP_7THORDER;

  149.             default:

  150.                 return FLUID_INTERP_DEFAULT;

  151.             }

  152.         default:

  153.             return 0.0f;

  154.         }

  155.     }

  156. 

  157.     void getLabel(char* const strBuf)

  158.     {

  159.         if (fLabel.isNotEmpty())

  160.             std::strncpy(strBuf, (const char*)fLabel, STR_MAX);

  161.         else

  162.             CarlaPlugin::getLabel(strBuf);

  163.     }

  164. 

  165.     void getMaker(char* const strBuf)

  166.     {

  167.         std::strncpy(strBuf, "FluidSynth SF2 engine", STR_MAX);

  168.     }

  169. 

  170.     void getCopyright(char* const strBuf)

  171.     {

  172.         std::strncpy(strBuf, "GNU GPL v2+", STR_MAX);

  173.     }

  174. 

  175.     void getRealName(char* const strBuf)

  176.     {

  177.         getLabel(strBuf);

  178.     }

  179. 

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

  181.     {

  182.         CARLA_ASSERT(parameterId < kData->param.count);

  183. 

  184.         switch (parameterId)

  185.         {

  186.         case FluidSynthReverbOnOff:

  187.             std::strncpy(strBuf, "Reverb On/Off", STR_MAX);

  188.             break;

  189.         case FluidSynthReverbRoomSize:

  190.             std::strncpy(strBuf, "Reverb Room Size", STR_MAX);

  191.             break;

  192.         case FluidSynthReverbDamp:

  193.             std::strncpy(strBuf, "Reverb Damp", STR_MAX);

  194.             break;

  195.         case FluidSynthReverbLevel:

  196.             std::strncpy(strBuf, "Reverb Level", STR_MAX);

  197.             break;

  198.         case FluidSynthReverbWidth:

  199.             std::strncpy(strBuf, "Reverb Width", STR_MAX);

  200.             break;

  201.         case FluidSynthChorusOnOff:

  202.             std::strncpy(strBuf, "Chorus On/Off", STR_MAX);

  203.             break;

  204.         case FluidSynthChorusNr:

  205.             std::strncpy(strBuf, "Chorus Voice Count", STR_MAX);

  206.             break;

  207.         case FluidSynthChorusLevel:

  208.             std::strncpy(strBuf, "Chorus Level", STR_MAX);

  209.             break;

  210.         case FluidSynthChorusSpeedHz:

  211.             std::strncpy(strBuf, "Chorus Speed", STR_MAX);

  212.             break;

  213.         case FluidSynthChorusDepthMs:

  214.             std::strncpy(strBuf, "Chorus Depth", STR_MAX);

  215.             break;

  216.         case FluidSynthChorusType:

  217.             std::strncpy(strBuf, "Chorus Type", STR_MAX);

  218.             break;

  219.         case FluidSynthPolyphony:

  220.             std::strncpy(strBuf, "Polyphony", STR_MAX);

  221.             break;

  222.         case FluidSynthInterpolation:

  223.             std::strncpy(strBuf, "Interpolation", STR_MAX);

  224.             break;

  225.         case FluidSynthVoiceCount:

  226.             std::strncpy(strBuf, "Voice Count", STR_MAX);

  227.             break;

  228.         default:

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

  230.             break;

  231.         }

  232.     }

  233. 

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

  235.     {

  236.         CARLA_ASSERT(parameterId < kData->param.count);

  237. 

  238.         switch (parameterId)

  239.         {

  240.         case FluidSynthChorusSpeedHz:

  241.             std::strncpy(strBuf, "Hz", STR_MAX);

  242.             break;

  243.         case FluidSynthChorusDepthMs:

  244.             std::strncpy(strBuf, "ms", STR_MAX);

  245.             break;

  246.         default:

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

  248.             break;

  249.         }

  250.     }

  251. 

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

  253.     {

  254.         CARLA_ASSERT(parameterId < kData->param.count);

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

  256. 

  257.         switch (parameterId)

  258.         {

  259.         case FluidSynthChorusType:

  260.             switch (scalePointId)

  261.             {

  262.             case 0:

  263.                 std::strncpy(strBuf, "Sine wave", STR_MAX);

  264.                 return;

  265.             case 1:

  266.                 std::strncpy(strBuf, "Triangle wave", STR_MAX);

  267.                 return;

  268.             }

  269.         case FluidSynthInterpolation:

  270.             switch (scalePointId)

  271.             {

  272.             case 0:

  273.                 std::strncpy(strBuf, "None", STR_MAX);

  274.                 return;

  275.             case 1:

  276.                 std::strncpy(strBuf, "Straight-line", STR_MAX);

  277.                 return;

  278.             case 2:

  279.                 std::strncpy(strBuf, "Fourth-order", STR_MAX);

  280.                 return;

  281.             case 3:

  282.                 std::strncpy(strBuf, "Seventh-order", STR_MAX);

  283.                 return;

  284.             }

  285.         }

  286. 

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

  288.     }

  289. 

  290.     // -------------------------------------------------------------------

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

  292. 

  293.     void setParameterValue(const uint32_t parameterId, const float value, const bool sendGui, const bool sendOsc, const bool sendCallback)

  294.     {

  295.         CARLA_ASSERT(parameterId < kData->param.count);

  296. 

  297.         const float fixedValue = kData->param.fixValue(parameterId, value);

  298.         fParamBuffers[parameterId] = fixedValue;

  299. 

  300.         switch (parameterId)

  301.         {

  302.         case FluidSynthReverbOnOff:

  303.             fluid_synth_set_reverb_on(fSynth, (fixedValue > 0.5f) ? 1 : 0);

  304.             break;

  305. 

  306.         case FluidSynthReverbRoomSize:

  307.         case FluidSynthReverbDamp:

  308.         case FluidSynthReverbLevel:

  309.         case FluidSynthReverbWidth:

  310.             fluid_synth_set_reverb(fSynth, fParamBuffers[FluidSynthReverbRoomSize], fParamBuffers[FluidSynthReverbDamp], fParamBuffers[FluidSynthReverbWidth], fParamBuffers[FluidSynthReverbLevel]);

  311.             break;

  312. 

  313.         case FluidSynthChorusOnOff:

  314.         {

  315.             // FIXME

  316.             //const ScopedDisabler m(this, ! kData->engine->isOffline());

  317.             fluid_synth_set_chorus_on(fSynth, (value > 0.5f) ? 1 : 0);

  318.             break;

  319.         }

  320. 

  321.         case FluidSynthChorusNr:

  322.         case FluidSynthChorusLevel:

  323.         case FluidSynthChorusSpeedHz:

  324.         case FluidSynthChorusDepthMs:

  325.         case FluidSynthChorusType:

  326.         {

  327.             //FIXME

  328.             //const ScopedDisabler m(this, ! kData->engine->isOffline());

  329.             fluid_synth_set_chorus(fSynth, fParamBuffers[FluidSynthChorusNr], fParamBuffers[FluidSynthChorusLevel], fParamBuffers[FluidSynthChorusSpeedHz], fParamBuffers[FluidSynthChorusDepthMs], fParamBuffers[FluidSynthChorusType]);

  330.             break;

  331.         }

  332. 

  333.         case FluidSynthPolyphony:

  334.         {

  335.             //FIXME

  336.             //const ScopedDisabler m(this, ! kData->engine->isOffline());

  337.             fluid_synth_set_polyphony(fSynth, value);

  338.             break;

  339.         }

  340. 

  341.         case FluidSynthInterpolation:

  342.         {

  343.             //FIXME

  344.             //const ScopedDisabler m(this, ! kData->engine->isOffline());

  345. 

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

  347.                 fluid_synth_set_interp_method(fSynth, i, value);

  348. 

  349.             break;

  350.         }

  351. 

  352.         default:

  353.             break;

  354.         }

  355. 

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

  357.     }

  358. 

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

  360.     {

  361.         CARLA_ASSERT(index >= -1 && index < static_cast<int32_t>(kData->midiprog.count));

  362. 

  363.         if (index < -1)

  364.             index = -1;

  365.         else if (index > static_cast<int32_t>(kData->midiprog.count))

  366.             return;

  367. 

  368.         if (kData->ctrlChannel < 0 || kData->ctrlChannel >= 16)

  369.             return;

  370. 

  371.         // FIXME

  372.         if (index >= 0)

  373.         {

  374.             const uint32_t bank    = kData->midiprog.data[index].bank;

  375.             const uint32_t program = kData->midiprog.data[index].program;

  376. 

  377.             if (kData->engine->isOffline())

  378.             {

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

  380.                 fluid_synth_program_select(fSynth, kData->ctrlChannel, fSynthId, bank, program);

  381.             }

  382.             else

  383.             {

  384.                 //const ScopedDisabler m(this, block);

  385.                 fluid_synth_program_select(fSynth, kData->ctrlChannel, fSynthId, bank, program);

  386.             }

  387.         }

  388. 

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

  390.     }

  391. 

  392.     // -------------------------------------------------------------------

  393.     // Plugin state

  394. 

  395.     void reload()

  396.     {

  397.         carla_debug("FluidSynthPlugin::reload() - start");

  398.         CARLA_ASSERT(kData->engine != nullptr);

  399.         CARLA_ASSERT(fSynth != nullptr);

  400. 

  401.         const ProcessMode processMode(kData->engine->getProccessMode());

  402. 

  403.         // Safely disable plugin for reload

  404.         const ScopedDisabler sd(this);

  405. 

  406.         if (kData->client->isActive())

  407.             kData->client->deactivate();

  408. 

  409.         deleteBuffers();

  410. 

  411.         uint32_t aOuts, params, j;

  412.         aOuts  = kUses16Outs ? 32 : 2;

  413.         params = FluidSynthParametersMax;

  414. 

  415.         kData->audioOut.createNew(aOuts);

  416.         kData->param.createNew(params);

  417. 

  418.         const int   portNameSize = kData->engine->maxPortNameSize();

  419.         CarlaString portName;

  420. 

  421.         // ---------------------------------------

  422.         // Audio Outputs

  423. 

  424.         if (kUses16Outs)

  425.         {

  426.             for (j=0; j < 32; j++)

  427.             {

  428.                 portName.clear();

  429. 

  430.                 if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  431.                 {

  432.                     portName  = fName;

  433.                     portName += ":";

  434.                 }

  435. 

  436.                 portName += "out-";

  437. 

  438.                 if ((j+2)/2 < 9)

  439.                     portName += "0";

  440. 

  441.                 portName += CarlaString((j+2)/2);

  442. 

  443.                 if (j % 2 == 0)

  444.                     portName += "L";

  445.                 else

  446.                     portName += "R";

  447. 

  448.                 portName.truncate(portNameSize);

  449. 

  450.                 kData->audioOut.ports[j].port   = (CarlaEngineAudioPort*)kData->client->addPort(kEnginePortTypeAudio, portName, false);

  451.                 kData->audioOut.ports[j].rindex = j;

  452.             }

  453. 

  454.             fAudio16Buffers = new float*[aOuts];

  455. 

  456.             for (j=0; j < aOuts; j++)

  457.                 fAudio16Buffers[j] = nullptr;

  458.         }

  459.         else

  460.         {

  461.             // out-left

  462.             portName.clear();

  463. 

  464.             if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  465.             {

  466.                 portName  = fName;

  467.                 portName += ":";

  468.             }

  469. 

  470.             portName += "out-left";

  471.             portName.truncate(portNameSize);

  472. 

  473.             kData->audioOut.ports[0].port   = (CarlaEngineAudioPort*)kData->client->addPort(kEnginePortTypeAudio, portName, false);

  474.             kData->audioOut.ports[0].rindex = 0;

  475. 

  476.             // out-right

  477.             portName.clear();

  478. 

  479.             if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  480.             {

  481.                 portName  = fName;

  482.                 portName += ":";

  483.             }

  484. 

  485.             portName += "out-right";

  486.             portName.truncate(portNameSize);

  487. 

  488.             kData->audioOut.ports[1].port   = (CarlaEngineAudioPort*)kData->client->addPort(kEnginePortTypeAudio, portName, false);

  489.             kData->audioOut.ports[1].rindex = 1;

  490.         }

  491. 

  492.         // ---------------------------------------

  493.         // Event Input

  494. 

  495.         {

  496.             portName.clear();

  497. 

  498.             if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  499.             {

  500.                 portName  = fName;

  501.                 portName += ":";

  502.             }

  503. 

  504.             portName += "event-in";

  505.             portName.truncate(portNameSize);

  506. 

  507.             kData->event.portIn = (CarlaEngineEventPort*)kData->client->addPort(kEnginePortTypeEvent, portName, true);

  508.         }

  509. 

  510.         // ---------------------------------------

  511.         // Event Output

  512. 

  513.         {

  514.             portName.clear();

  515. 

  516.             if (processMode == PROCESS_MODE_SINGLE_CLIENT)

  517.             {

  518.                 portName  = fName;

  519.                 portName += ":";

  520.             }

  521. 

  522.             portName += "event-out";

  523.             portName.truncate(portNameSize);

  524. 

  525.             kData->event.portOut = (CarlaEngineEventPort*)kData->client->addPort(kEnginePortTypeEvent, portName, false);

  526.         }

  527. 

  528.         // ----------------------

  529.         j = FluidSynthReverbOnOff;

  530.         kData->param.data[j].index  = j;

  531.         kData->param.data[j].rindex = j;

  532.         kData->param.data[j].type   = PARAMETER_INPUT;

  533.         kData->param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_AUTOMABLE | PARAMETER_IS_BOOLEAN;

  534.         kData->param.data[j].midiChannel = 0;

  535.         kData->param.data[j].midiCC = -1;

  536.         kData->param.ranges[j].min = 0.0f;

  537.         kData->param.ranges[j].max = 1.0f;

  538.         kData->param.ranges[j].def = 0.0f; // off

  539.         kData->param.ranges[j].step = 1.0f;

  540.         kData->param.ranges[j].stepSmall = 1.0f;

  541.         kData->param.ranges[j].stepLarge = 1.0f;

  542.         fParamBuffers[j] = kData->param.ranges[j].def;

  543. 

  544.         // ----------------------

  545.         j = FluidSynthReverbRoomSize;

  546.         kData->param.data[j].index  = j;

  547.         kData->param.data[j].rindex = j;

  548.         kData->param.data[j].type   = PARAMETER_INPUT;

  549.         kData->param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_AUTOMABLE;

  550.         kData->param.data[j].midiChannel = 0;

  551.         kData->param.data[j].midiCC = -1;

  552.         kData->param.ranges[j].min = 0.0f;

  553.         kData->param.ranges[j].max = 1.2f;

  554.         kData->param.ranges[j].def = FLUID_REVERB_DEFAULT_ROOMSIZE;

  555.         kData->param.ranges[j].step = 0.01f;

  556.         kData->param.ranges[j].stepSmall = 0.0001f;

  557.         kData->param.ranges[j].stepLarge = 0.1f;

  558.         fParamBuffers[j] = kData->param.ranges[j].def;

  559. 

  560.         // ----------------------

  561.         j = FluidSynthReverbDamp;

  562.         kData->param.data[j].index  = j;

  563.         kData->param.data[j].rindex = j;

  564.         kData->param.data[j].type   = PARAMETER_INPUT;

  565.         kData->param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_AUTOMABLE;

  566.         kData->param.data[j].midiChannel = 0;

  567.         kData->param.data[j].midiCC = -1;

  568.         kData->param.ranges[j].min = 0.0f;

  569.         kData->param.ranges[j].max = 1.0f;

  570.         kData->param.ranges[j].def = FLUID_REVERB_DEFAULT_DAMP;

  571.         kData->param.ranges[j].step = 0.01f;

  572.         kData->param.ranges[j].stepSmall = 0.0001f;

  573.         kData->param.ranges[j].stepLarge = 0.1f;

  574.         fParamBuffers[j] = kData->param.ranges[j].def;

  575. 

  576.         // ----------------------

  577.         j = FluidSynthReverbLevel;

  578.         kData->param.data[j].index  = j;

  579.         kData->param.data[j].rindex = j;

  580.         kData->param.data[j].type   = PARAMETER_INPUT;

  581.         kData->param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_AUTOMABLE;

  582.         kData->param.data[j].midiChannel = 0;

  583.         kData->param.data[j].midiCC = MIDI_CONTROL_REVERB_SEND_LEVEL;

  584.         kData->param.ranges[j].min = 0.0f;

  585.         kData->param.ranges[j].max = 1.0f;

  586.         kData->param.ranges[j].def = FLUID_REVERB_DEFAULT_LEVEL;

  587.         kData->param.ranges[j].step = 0.01f;

  588.         kData->param.ranges[j].stepSmall = 0.0001f;

  589.         kData->param.ranges[j].stepLarge = 0.1f;

  590.         fParamBuffers[j] = kData->param.ranges[j].def;

  591. 

  592.         // ----------------------

  593.         j = FluidSynthReverbWidth;

  594.         kData->param.data[j].index  = j;

  595.         kData->param.data[j].rindex = j;

  596.         kData->param.data[j].type   = PARAMETER_INPUT;

  597.         kData->param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_AUTOMABLE;

  598.         kData->param.data[j].midiChannel = 0;

  599.         kData->param.data[j].midiCC = -1;

  600.         kData->param.ranges[j].min = 0.0f;

  601.         kData->param.ranges[j].max = 10.0f; // should be 100, but that sounds too much

  602.         kData->param.ranges[j].def = FLUID_REVERB_DEFAULT_WIDTH;

  603.         kData->param.ranges[j].step = 0.01f;

  604.         kData->param.ranges[j].stepSmall = 0.0001f;

  605.         kData->param.ranges[j].stepLarge = 0.1f;

  606.         fParamBuffers[j] = kData->param.ranges[j].def;

  607. 

  608.         // ----------------------

  609.         j = FluidSynthChorusOnOff;

  610.         kData->param.data[j].index  = j;

  611.         kData->param.data[j].rindex = j;

  612.         kData->param.data[j].type   = PARAMETER_INPUT;

  613.         kData->param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_BOOLEAN;

  614.         kData->param.data[j].midiChannel = 0;

  615.         kData->param.data[j].midiCC = -1;

  616.         kData->param.ranges[j].min = 0.0f;

  617.         kData->param.ranges[j].max = 1.0f;

  618.         kData->param.ranges[j].def = 0.0f; // off

  619.         kData->param.ranges[j].step = 1.0f;

  620.         kData->param.ranges[j].stepSmall = 1.0f;

  621.         kData->param.ranges[j].stepLarge = 1.0f;

  622.         fParamBuffers[j] = kData->param.ranges[j].def;

  623. 

  624.         // ----------------------

  625.         j = FluidSynthChorusNr;

  626.         kData->param.data[j].index  = j;

  627.         kData->param.data[j].rindex = j;

  628.         kData->param.data[j].type   = PARAMETER_INPUT;

  629.         kData->param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_INTEGER;

  630.         kData->param.data[j].midiChannel = 0;

  631.         kData->param.data[j].midiCC = -1;

  632.         kData->param.ranges[j].min = 0.0f;

  633.         kData->param.ranges[j].max = 99.0f;

  634.         kData->param.ranges[j].def = FLUID_CHORUS_DEFAULT_N;

  635.         kData->param.ranges[j].step = 1.0f;

  636.         kData->param.ranges[j].stepSmall = 1.0f;

  637.         kData->param.ranges[j].stepLarge = 10.0f;

  638.         fParamBuffers[j] = kData->param.ranges[j].def;

  639. 

  640.         // ----------------------

  641.         j = FluidSynthChorusLevel;

  642.         kData->param.data[j].index  = j;

  643.         kData->param.data[j].rindex = j;

  644.         kData->param.data[j].type   = PARAMETER_INPUT;

  645.         kData->param.data[j].hints  = PARAMETER_IS_ENABLED;

  646.         kData->param.data[j].midiChannel = 0;

  647.         kData->param.data[j].midiCC = 0; //MIDI_CONTROL_CHORUS_SEND_LEVEL;

  648.         kData->param.ranges[j].min = 0.0f;

  649.         kData->param.ranges[j].max = 10.0f;

  650.         kData->param.ranges[j].def = FLUID_CHORUS_DEFAULT_LEVEL;

  651.         kData->param.ranges[j].step = 0.01f;

  652.         kData->param.ranges[j].stepSmall = 0.0001f;

  653.         kData->param.ranges[j].stepLarge = 0.1f;

  654.         fParamBuffers[j] = kData->param.ranges[j].def;

  655. 

  656.         // ----------------------

  657.         j = FluidSynthChorusSpeedHz;

  658.         kData->param.data[j].index  = j;

  659.         kData->param.data[j].rindex = j;

  660.         kData->param.data[j].type   = PARAMETER_INPUT;

  661.         kData->param.data[j].hints  = PARAMETER_IS_ENABLED;

  662.         kData->param.data[j].midiChannel = 0;

  663.         kData->param.data[j].midiCC = -1;

  664.         kData->param.ranges[j].min = 0.29f;

  665.         kData->param.ranges[j].max = 5.0f;

  666.         kData->param.ranges[j].def = FLUID_CHORUS_DEFAULT_SPEED;

  667.         kData->param.ranges[j].step = 0.01f;

  668.         kData->param.ranges[j].stepSmall = 0.0001f;

  669.         kData->param.ranges[j].stepLarge = 0.1f;

  670.         fParamBuffers[j] = kData->param.ranges[j].def;

  671. 

  672.         // ----------------------

  673.         j = FluidSynthChorusDepthMs;

  674.         kData->param.data[j].index  = j;

  675.         kData->param.data[j].rindex = j;

  676.         kData->param.data[j].type   = PARAMETER_INPUT;

  677.         kData->param.data[j].hints  = PARAMETER_IS_ENABLED;

  678.         kData->param.data[j].midiChannel = 0;

  679.         kData->param.data[j].midiCC = -1;

  680.         kData->param.ranges[j].min = 0.0f;

  681.         kData->param.ranges[j].max = 2048000.0 / kData->engine->getSampleRate();

  682.         kData->param.ranges[j].def = FLUID_CHORUS_DEFAULT_DEPTH;

  683.         kData->param.ranges[j].step = 0.01f;

  684.         kData->param.ranges[j].stepSmall = 0.0001f;

  685.         kData->param.ranges[j].stepLarge = 0.1f;

  686.         fParamBuffers[j] = kData->param.ranges[j].def;

  687. 

  688.         // ----------------------

  689.         j = FluidSynthChorusType;

  690.         kData->param.data[j].index  = j;

  691.         kData->param.data[j].rindex = j;

  692.         kData->param.data[j].type   = PARAMETER_INPUT;

  693.         kData->param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_INTEGER | PARAMETER_USES_SCALEPOINTS;

  694.         kData->param.data[j].midiChannel = 0;

  695.         kData->param.data[j].midiCC = -1;

  696.         kData->param.ranges[j].min = FLUID_CHORUS_MOD_SINE;

  697.         kData->param.ranges[j].max = FLUID_CHORUS_MOD_TRIANGLE;

  698.         kData->param.ranges[j].def = FLUID_CHORUS_DEFAULT_TYPE;

  699.         kData->param.ranges[j].step = 1.0f;

  700.         kData->param.ranges[j].stepSmall = 1.0f;

  701.         kData->param.ranges[j].stepLarge = 1.0f;

  702.         fParamBuffers[j] = kData->param.ranges[j].def;

  703. 

  704.         // ----------------------

  705.         j = FluidSynthPolyphony;

  706.         kData->param.data[j].index  = j;

  707.         kData->param.data[j].rindex = j;

  708.         kData->param.data[j].type   = PARAMETER_INPUT;

  709.         kData->param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_INTEGER;

  710.         kData->param.data[j].midiChannel = 0;

  711.         kData->param.data[j].midiCC = -1;

  712.         kData->param.ranges[j].min = 1.0f;

  713.         kData->param.ranges[j].max = 512.0f; // max theoric is 65535

  714.         kData->param.ranges[j].def = fluid_synth_get_polyphony(fSynth);

  715.         kData->param.ranges[j].step = 1.0f;

  716.         kData->param.ranges[j].stepSmall = 1.0f;

  717.         kData->param.ranges[j].stepLarge = 10.0f;

  718.         fParamBuffers[j] = kData->param.ranges[j].def;

  719. 

  720.         // ----------------------

  721.         j = FluidSynthInterpolation;

  722.         kData->param.data[j].index  = j;

  723.         kData->param.data[j].rindex = j;

  724.         kData->param.data[j].type   = PARAMETER_INPUT;

  725.         kData->param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_INTEGER | PARAMETER_USES_SCALEPOINTS;

  726.         kData->param.data[j].midiChannel = 0;

  727.         kData->param.data[j].midiCC = -1;

  728.         kData->param.ranges[j].min = FLUID_INTERP_NONE;

  729.         kData->param.ranges[j].max = FLUID_INTERP_HIGHEST;

  730.         kData->param.ranges[j].def = FLUID_INTERP_DEFAULT;

  731.         kData->param.ranges[j].step = 1.0f;

  732.         kData->param.ranges[j].stepSmall = 1.0f;

  733.         kData->param.ranges[j].stepLarge = 1.0f;

  734.         fParamBuffers[j] = kData->param.ranges[j].def;

  735. 

  736.         // ----------------------

  737.         j = FluidSynthVoiceCount;

  738.         kData->param.data[j].index  = j;

  739.         kData->param.data[j].rindex = j;

  740.         kData->param.data[j].type   = PARAMETER_OUTPUT;

  741.         kData->param.data[j].hints  = PARAMETER_IS_ENABLED | PARAMETER_IS_AUTOMABLE | PARAMETER_IS_INTEGER;

  742.         kData->param.data[j].midiChannel = 0;

  743.         kData->param.data[j].midiCC = -1;

  744.         kData->param.ranges[j].min = 0.0f;

  745.         kData->param.ranges[j].max = 65535.0f;

  746.         kData->param.ranges[j].def = 0.0f;

  747.         kData->param.ranges[j].step = 1.0f;

  748.         kData->param.ranges[j].stepSmall = 1.0f;

  749.         kData->param.ranges[j].stepLarge = 1.0f;

  750.         fParamBuffers[j] = kData->param.ranges[j].def;

  751. 

  752.         // ---------------------------------------

  753. 

  754.         // plugin checks

  755.         fHints &= ~(PLUGIN_IS_SYNTH | PLUGIN_USES_CHUNKS | PLUGIN_CAN_DRYWET | PLUGIN_CAN_VOLUME | PLUGIN_CAN_BALANCE | PLUGIN_CAN_FORCE_STEREO);

  756. 

  757.         fHints |= PLUGIN_IS_SYNTH;

  758.         fHints |= PLUGIN_CAN_VOLUME;

  759.         fHints |= PLUGIN_CAN_BALANCE;

  760.         fHints |= PLUGIN_CAN_FORCE_STEREO;

  761. 

  762.         // plugin options

  763.         kData->availOptions &= ~(PLUGIN_OPTION_FIXED_BUFFER | PLUGIN_OPTION_SELF_AUTOMATION | PLUGIN_OPTION_SEND_ALL_SOUND_OFF | PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH | PLUGIN_OPTION_SEND_PITCHBEND);

  764. 

  765.         // always available if needed

  766.         kData->availOptions |= PLUGIN_OPTION_SELF_AUTOMATION;

  767.         kData->availOptions |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;

  768.         kData->availOptions |= PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH;

  769.         kData->availOptions |= PLUGIN_OPTION_SEND_PITCHBEND;

  770. 

  771.         bufferSizeChanged(kData->engine->getBufferSize());

  772.         reloadPrograms(true);

  773. 

  774.         kData->client->activate();

  775. 

  776.         carla_debug("FluidSynthPlugin::reload() - end");

  777.     }

  778. 

  779.     void reloadPrograms(const bool init)

  780.     {

  781.         carla_debug("FluidSynthPlugin::reloadPrograms(%s)", bool2str(init));

  782. 

  783.         // Delete old programs

  784.         kData->midiprog.clear();

  785. 

  786.         // Query new programs

  787.         uint32_t count = 0;

  788.         fluid_sfont_t* f_sfont;

  789.         fluid_preset_t f_preset;

  790.         bool hasDrums = false;

  791. 

  792.         f_sfont = fluid_synth_get_sfont_by_id(fSynth, fSynthId);

  793. 

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

  795.         f_sfont->iteration_start(f_sfont);

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

  797.             count += 1;

  798. 

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

  800.         CARLA_ASSERT(count > 0);

  801. 

  802.         if (count == 0)

  803.             return;

  804. 

  805.         kData->midiprog.createNew(count);

  806. 

  807.         // Update data

  808.         uint32_t i = 0;

  809.         f_sfont->iteration_start(f_sfont);

  810. 

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

  812.         {

  813.             CARLA_ASSERT(i < kData->midiprog.count);

  814.             kData->midiprog.data[i].bank    = f_preset.get_banknum(&f_preset);

  815.             kData->midiprog.data[i].program = f_preset.get_num(&f_preset);

  816.             kData->midiprog.data[i].name    = carla_strdup(f_preset.get_name(&f_preset));

  817. 

  818.             if (kData->midiprog.data[i].bank == 128)

  819.                 hasDrums = true;

  820. 

  821.             i++;

  822.         }

  823. 

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

  825. 

  826. #ifndef BUILD_BRIDGE

  827.         // Update OSC Names

  828.         if (kData->engine->isOscControlRegistered())

  829.         {

  830.             kData->engine->osc_send_control_set_midi_program_count(fId, kData->midiprog.count);

  831. 

  832.             for (i=0; i < kData->midiprog.count; i++)

  833.                 kData->engine->osc_send_control_set_midi_program_data(fId, i, kData->midiprog.data[i].bank, kData->midiprog.data[i].program, kData->midiprog.data[i].name);

  834.         }

  835. #endif

  836. 

  837.         if (init)

  838.         {

  839.             fluid_synth_program_reset(fSynth);

  840. 

  841.             // select first program, or 128 for ch10

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

  843.             {

  844.                 fluid_synth_program_select(fSynth, i, fSynthId, kData->midiprog.data[0].bank, kData->midiprog.data[0].program);

  845. #ifdef FLUIDSYNTH_VERSION_NEW_API

  846.                 fluid_synth_set_channel_type(fSynth, i, CHANNEL_TYPE_MELODIC);

  847. #endif

  848.             }

  849. 

  850.             if (hasDrums)

  851.             {

  852.                 fluid_synth_program_select(fSynth, 9, fSynthId, 128, 0);

  853. #ifdef FLUIDSYNTH_VERSION_NEW_API

  854.                 fluid_synth_set_channel_type(fSynth, 9, CHANNEL_TYPE_DRUM);

  855. #endif

  856.             }

  857.             else

  858.             {

  859.                 fluid_synth_program_select(fSynth, 9, fSynthId, kData->midiprog.data[0].bank, kData->midiprog.data[0].program);

  860. #ifdef FLUIDSYNTH_VERSION_NEW_API

  861.                 fluid_synth_set_channel_type(fSynth, 9, CHANNEL_TYPE_MELODIC);

  862. #endif

  863.             }

  864. 

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

  866.         }

  867.         else

  868.         {

  869.             kData->engine->callback(CALLBACK_RELOAD_PROGRAMS, fId, 0, 0, 0.0f, nullptr);

  870.         }

  871.     }

  872. 

  873.     // -------------------------------------------------------------------

  874.     // Plugin processing

  875. 

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

  877.     {

  878.         uint32_t i, k;

  879. 

  880.         // --------------------------------------------------------------------------------------------------------

  881.         // Check if active

  882. 

  883.         if (! kData->active)

  884.         {

  885.             // disable any output sound

  886.             for (i=0; i < kData->audioOut.count; i++)

  887.                 carla_zeroFloat(outBuffer[i], frames);

  888. 

  889.             kData->activeBefore = kData->active;

  890.             return;

  891.         }

  892. 

  893.         // --------------------------------------------------------------------------------------------------------

  894.         // Check if active before

  895. 

  896.         if (kData->needsReset || ! kData->activeBefore)

  897.         {

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

  899.             {

  900. #ifdef FLUIDSYNTH_VERSION_NEW_API

  901.                 fluid_synth_all_notes_off(fSynth, c);

  902.                 fluid_synth_all_sounds_off(fSynth, c);

  903. #else

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

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

  906. #endif

  907.             }

  908. 

  909.             kData->needsReset = false;

  910.         }

  911. 

  912.         // --------------------------------------------------------------------------------------------------------

  913.         // Event Input and Processing

  914. 

  915.         if (kData->activeBefore)

  916.         {

  917.             // ----------------------------------------------------------------------------------------------------

  918.             // MIDI Input (External)

  919. 

  920.             if (kData->extNotes.mutex.tryLock())

  921.             {

  922.                 while (! kData->extNotes.data.isEmpty())

  923.                 {

  924.                     const ExternalMidiNote& note = kData->extNotes.data.getFirst(true);

  925. 

  926.                     CARLA_ASSERT(note.channel >= 0);

  927. 

  928.                     if (note.velo > 0)

  929.                         fluid_synth_noteon(fSynth, note.channel, note.note, note.velo);

  930.                     else

  931.                         fluid_synth_noteoff(fSynth,note.channel, note.note);

  932.                 }

  933. 

  934.                 kData->extNotes.mutex.unlock();

  935. 

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

  937. 

  938.             // ----------------------------------------------------------------------------------------------------

  939.             // Event Input (System)

  940. 

  941.             bool allNotesOffSent = false;

  942. 

  943.             uint32_t time, nEvents = kData->event.portIn->getEventCount();

  944.             uint32_t timeOffset = 0;

  945. 

  946.             uint32_t nextBankIds[16] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 0, 0, 0, 0, 0, 0 };

  947. 

  948.             if (kData->midiprog.current >= 0 && kData->midiprog.count > 0 && kData->ctrlChannel >= 0 && kData->ctrlChannel < 16)

  949.                 nextBankIds[kData->ctrlChannel] = kData->midiprog.data[kData->midiprog.current].bank;

  950. 

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

  952.             {

  953.                 const EngineEvent& event = kData->event.portIn->getEvent(i);

  954. 

  955.                 time = event.time;

  956. 

  957.                 if (time >= frames)

  958.                     continue;

  959. 

  960.                 CARLA_ASSERT_INT2(time >= timeOffset, time, timeOffset);

  961. 

  962.                 if (time > timeOffset)

  963.                 {

  964.                     if (kUses16Outs)

  965.                         processSingle(outBuffer, time - timeOffset, timeOffset);

  966.                     else

  967.                         fluid_synth_write_float(fSynth, time - timeOffset, outBuffer[0] + timeOffset, 0, 1, outBuffer[1] + timeOffset, 0, 1);

  968. 

  969.                     timeOffset = time;

  970.                 }

  971. 

  972.                 // Control change

  973.                 switch (event.type)

  974.                 {

  975.                 case kEngineEventTypeNull:

  976.                     break;

  977. 

  978.                 case kEngineEventTypeControl:

  979.                 {

  980.                     const EngineControlEvent& ctrlEvent = event.ctrl;

  981. 

  982.                     switch (ctrlEvent.type)

  983.                     {

  984.                     case kEngineControlEventTypeNull:

  985.                         break;

  986. 

  987.                     case kEngineControlEventTypeParameter:

  988.                     {

  989.                         // Control backend stuff

  990.                         if (event.channel == kData->ctrlChannel)

  991.                         {

  992.                             double value;

  993. 

  994.                             if (MIDI_IS_CONTROL_BREATH_CONTROLLER(ctrlEvent.param) && (fHints & PLUGIN_CAN_DRYWET) > 0)

  995.                             {

  996.                                 value = ctrlEvent.value;

  997.                                 setDryWet(value, false, false);

  998.                                 postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_DRYWET, 0, value);

  999.                                 continue;

  1000.                             }

  1001. 

  1002.                             if (MIDI_IS_CONTROL_CHANNEL_VOLUME(ctrlEvent.param) && (fHints & PLUGIN_CAN_VOLUME) > 0)

  1003.                             {

  1004.                                 value = ctrlEvent.value*127/100;

  1005.                                 setVolume(value, false, false);

  1006.                                 postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_VOLUME, 0, value);

  1007.                                 continue;

  1008.                             }

  1009. 

  1010.                             if (MIDI_IS_CONTROL_BALANCE(ctrlEvent.param) && (fHints & PLUGIN_CAN_BALANCE) > 0)

  1011.                             {

  1012.                                 double left, right;

  1013.                                 value = ctrlEvent.value/0.5 - 1.0;

  1014. 

  1015.                                 if (value < 0.0)

  1016.                                 {

  1017.                                     left  = -1.0;

  1018.                                     right = (value*2)+1.0;

  1019.                                 }

  1020.                                 else if (value > 0.0)

  1021.                                 {

  1022.                                     left  = (value*2)-1.0;

  1023.                                     right = 1.0;

  1024.                                 }

  1025.                                 else

  1026.                                 {

  1027.                                     left  = -1.0;

  1028.                                     right = 1.0;

  1029.                                 }

  1030. 

  1031.                                 setBalanceLeft(left, false, false);

  1032.                                 setBalanceRight(right, false, false);

  1033.                                 postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_BALANCE_LEFT, 0, left);

  1034.                                 postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_BALANCE_RIGHT, 0, right);

  1035.                                 continue;

  1036.                             }

  1037.                         }

  1038. 

  1039.                         // Control plugin parameters

  1040.                         for (k=0; k < kData->param.count; k++)

  1041.                         {

  1042.                             if (kData->param.data[k].midiChannel != event.channel)

  1043.                                 continue;

  1044.                             if (kData->param.data[k].midiCC != ctrlEvent.param)

  1045.                                 continue;

  1046.                             if (kData->param.data[k].type != PARAMETER_INPUT)

  1047.                                 continue;

  1048.                             if ((kData->param.data[k].hints & PARAMETER_IS_AUTOMABLE) == 0)

  1049.                                 continue;

  1050. 

  1051.                             double value;

  1052. 

  1053.                             if (kData->param.data[k].hints & PARAMETER_IS_BOOLEAN)

  1054.                             {

  1055.                                 value = (ctrlEvent.value < 0.5) ? kData->param.ranges[k].min : kData->param.ranges[k].max;

  1056.                             }

  1057.                             else

  1058.                             {

  1059.                                 // FIXME - ranges call for this

  1060.                                 value = ctrlEvent.value * (kData->param.ranges[k].max - kData->param.ranges[k].min) + kData->param.ranges[k].min;

  1061. 

  1062.                                 if (kData->param.data[k].hints & PARAMETER_IS_INTEGER)

  1063.                                     value = std::rint(value);

  1064.                             }

  1065. 

  1066.                             setParameterValue(k, value, false, false, false);

  1067.                             postponeRtEvent(kPluginPostRtEventParameterChange, k, 0, value);

  1068.                         }

  1069. 

  1070.                         break;

  1071.                     }

  1072. 

  1073.                     case kEngineControlEventTypeMidiBank:

  1074.                         if (event.channel < 16)

  1075.                             nextBankIds[event.channel] = ctrlEvent.param;

  1076.                         break;

  1077. 

  1078.                     case kEngineControlEventTypeMidiProgram:

  1079.                         if (event.channel < 16)

  1080.                         {

  1081.                             const uint32_t bankId = nextBankIds[event.channel];

  1082.                             const uint32_t progId = ctrlEvent.param;

  1083. 

  1084.                             for (k=0; k < kData->midiprog.count; k++)

  1085.                             {

  1086.                                 if (kData->midiprog.data[k].bank == bankId && kData->midiprog.data[k].program == progId)

  1087.                                 {

  1088.                                     if (event.channel == kData->ctrlChannel)

  1089.                                     {

  1090.                                         setMidiProgram(k, false, false, false, false);

  1091.                                         postponeRtEvent(kPluginPostRtEventMidiProgramChange, k, 0, 0.0);

  1092.                                     }

  1093.                                     else

  1094.                                         fluid_synth_program_select(fSynth, event.channel, fSynthId, bankId, progId);

  1095. 

  1096.                                     break;

  1097.                                 }

  1098.                             }

  1099.                         }

  1100.                         break;

  1101. 

  1102.                     case kEngineControlEventTypeAllSoundOff:

  1103.                         if (event.channel == kData->ctrlChannel)

  1104.                         {

  1105.                             if (! allNotesOffSent)

  1106.                                 sendMidiAllNotesOff();

  1107. 

  1108.                             postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_ACTIVE, 0, 0.0);

  1109.                             postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_ACTIVE, 0, 1.0);

  1110. 

  1111.                             allNotesOffSent = true;

  1112.                         }

  1113.                         break;

  1114. 

  1115.                     case kEngineControlEventTypeAllNotesOff:

  1116.                         if (event.channel == kData->ctrlChannel)

  1117.                         {

  1118.                             if (! allNotesOffSent)

  1119.                                 sendMidiAllNotesOff();

  1120. 

  1121.                             allNotesOffSent = true;

  1122.                         }

  1123.                         break;

  1124.                     }

  1125. 

  1126.                     break;

  1127.                 }

  1128. 

  1129.                 case kEngineEventTypeMidi:

  1130.                 {

  1131.                     const EngineMidiEvent& midiEvent = event.midi;

  1132. 

  1133.                     uint8_t status  = MIDI_GET_STATUS_FROM_DATA(midiEvent.data);

  1134.                     uint8_t channel = event.channel;

  1135. 

  1136.                     // Fix bad note-off

  1137.                     if (MIDI_IS_STATUS_NOTE_ON(status) && midiEvent.data[2] == 0)

  1138.                         status -= 0x10;

  1139. 

  1140.                     if (MIDI_IS_STATUS_NOTE_OFF(status))

  1141.                     {

  1142.                         const uint8_t note = midiEvent.data[1];

  1143. 

  1144.                         fluid_synth_noteoff(fSynth, channel, note);

  1145. 

  1146.                         postponeRtEvent(kPluginPostRtEventNoteOff, channel, note, 0.0);

  1147.                     }

  1148.                     else if (MIDI_IS_STATUS_NOTE_ON(status))

  1149.                     {

  1150.                         const uint8_t note = midiEvent.data[1];

  1151.                         const uint8_t velo = midiEvent.data[2];

  1152. 

  1153.                         fluid_synth_noteon(fSynth, channel, note, velo);

  1154. 

  1155.                         postponeRtEvent(kPluginPostRtEventNoteOn, channel, note, velo);

  1156.                     }

  1157.                     else if (MIDI_IS_STATUS_POLYPHONIC_AFTERTOUCH(status))

  1158.                     {

  1159.                         const uint8_t note     = midiEvent.data[1];

  1160.                         const uint8_t pressure = midiEvent.data[2];

  1161. 

  1162.                         // TODO, not in fluidsynth API?

  1163.                         continue;

  1164. 

  1165.                         // unused

  1166.                         (void)note;

  1167.                         (void)pressure;

  1168.                     }

  1169.                     else if (MIDI_IS_STATUS_CONTROL_CHANGE(status) && (fHints & PLUGIN_OPTION_SELF_AUTOMATION) != 0)

  1170.                     {

  1171.                         const uint8_t control = midiEvent.data[1];

  1172.                         const uint8_t value   = midiEvent.data[2];

  1173. 

  1174.                         fluid_synth_cc(fSynth, channel, control, value);

  1175.                     }

  1176.                     else if (MIDI_IS_STATUS_AFTERTOUCH(status))

  1177.                     {

  1178.                         const uint8_t pressure = midiEvent.data[1];

  1179. 

  1180.                         fluid_synth_channel_pressure(fSynth, channel, pressure);;

  1181.                     }

  1182.                     else if (MIDI_IS_STATUS_PITCH_WHEEL_CONTROL(status))

  1183.                     {

  1184.                         const uint8_t lsb = midiEvent.data[1];

  1185.                         const uint8_t msb = midiEvent.data[2];

  1186. 

  1187.                         fluid_synth_pitch_bend(fSynth, channel, (msb << 7) | lsb);

  1188.                     }

  1189.                     else

  1190.                         continue;

  1191. 

  1192.                     break;

  1193.                 }

  1194.                 }

  1195.             }

  1196. 

  1197.             kData->postRtEvents.trySplice();

  1198. 

  1199.             if (frames > timeOffset)

  1200.             {

  1201.                 if (kUses16Outs)

  1202.                     processSingle(outBuffer, frames - timeOffset, timeOffset);

  1203.                 else

  1204.                     fluid_synth_write_float(fSynth, frames - timeOffset, outBuffer[0] + timeOffset, 0, 1, outBuffer[1] + timeOffset, 0, 1);

  1205.             }

  1206. 

  1207.         } // End of Event Input and Processing

  1208. 

  1209.         CARLA_PROCESS_CONTINUE_CHECK;

  1210. 

  1211.         // --------------------------------------------------------------------------------------------------------

  1212.         // Post-processing (volume and balance)

  1213. 

  1214.         {

  1215.             const bool doVolume  = (fHints & PLUGIN_CAN_VOLUME) > 0 && kData->postProc.volume != 1.0f;

  1216.             const bool doBalance = (fHints & PLUGIN_CAN_BALANCE) > 0 && (kData->postProc.balanceLeft != -1.0f || kData->postProc.balanceRight != 1.0f);

  1217. 

  1218.             float oldBufLeft[doBalance ? frames : 1];

  1219. 

  1220.             for (i=0; i < kData->audioOut.count; i++)

  1221.             {

  1222.                 // Balance

  1223.                 if (doBalance)

  1224.                 {

  1225.                     if (i % 2 == 0)

  1226.                         carla_copyFloat(oldBufLeft, outBuffer[i], frames);

  1227. 

  1228.                     float balRangeL = (kData->postProc.balanceLeft  + 1.0f)/2.0f;

  1229.                     float balRangeR = (kData->postProc.balanceRight + 1.0f)/2.0f;

  1230. 

  1231.                     for (k=0; k < frames; k++)

  1232.                     {

  1233.                         if (i % 2 == 0)

  1234.                         {

  1235.                             // left

  1236.                             outBuffer[i][k]  = oldBufLeft[k]     * (1.0f - balRangeL);

  1237.                             outBuffer[i][k] += outBuffer[i+1][k] * (1.0f - balRangeR);

  1238.                         }

  1239.                         else

  1240.                         {

  1241.                             // right

  1242.                             outBuffer[i][k]  = outBuffer[i][k] * balRangeR;

  1243.                             outBuffer[i][k] += oldBufLeft[k]   * balRangeL;

  1244.                         }

  1245.                     }

  1246.                 }

  1247. 

  1248.                 // Volume

  1249.                 if (doVolume)

  1250.                 {

  1251.                     for (k=0; k < frames; k++)

  1252.                         outBuffer[i][k] *= kData->postProc.volume;

  1253.                 }

  1254.             }

  1255. 

  1256.         } // End of Post-processing

  1257. 

  1258.         CARLA_PROCESS_CONTINUE_CHECK;

  1259. 

  1260.         // --------------------------------------------------------------------------------------------------------

  1261.         // Control Output

  1262. 

  1263.         {

  1264.             k = FluidSynthVoiceCount;

  1265.             fParamBuffers[k] = fluid_synth_get_active_voice_count(fSynth);

  1266.             kData->param.ranges[k].fixValue(fParamBuffers[k]);

  1267. 

  1268.             if (kData->param.data[k].midiCC > 0)

  1269.             {

  1270.                 double value = kData->param.ranges[k].normalizeValue(fParamBuffers[k]);

  1271.                 kData->event.portOut->writeControlEvent(0, kData->param.data[k].midiChannel, kEngineControlEventTypeParameter, kData->param.data[k].midiCC, value);

  1272.             }

  1273. 

  1274.         } // End of Control Output

  1275. 

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

  1277. 

  1278.         kData->activeBefore = kData->active;

  1279.     }

  1280. 

  1281.     void processSingle(float** const outBuffer, const uint32_t frames, const uint32_t timeOffset)

  1282.     {

  1283.         for (uint32_t i=0; i < kData->audioOut.count; i++)

  1284.             carla_zeroFloat(fAudio16Buffers[i], frames);

  1285. 

  1286.         fluid_synth_process(fSynth, frames, 0, nullptr, kData->audioOut.count, fAudio16Buffers);

  1287. 

  1288.         for (uint32_t i=0, k; i < kData->audioOut.count; i++)

  1289.         {

  1290.             for (k=0; k < frames; k++)

  1291.                 outBuffer[i][k+timeOffset] = fAudio16Buffers[i][k];

  1292.         }

  1293.     }

  1294. 

  1295.     void bufferSizeChanged(const uint32_t newBufferSize)

  1296.     {

  1297.         if (! kUses16Outs)

  1298.             return;

  1299. 

  1300.         for (uint32_t i=0; i < kData->audioOut.count; i++)

  1301.         {

  1302.             if (fAudio16Buffers[i] != nullptr)

  1303.                 delete[] fAudio16Buffers[i];

  1304.             fAudio16Buffers[i] = new float[newBufferSize];

  1305.         }

  1306.     }

  1307. 

  1308.     // -------------------------------------------------------------------

  1309.     // Cleanup

  1310. 

  1311.     void deleteBuffers()

  1312.     {

  1313.         carla_debug("FluidSynthPlugin::deleteBuffers() - start");

  1314. 

  1315.         if (fAudio16Buffers != nullptr)

  1316.         {

  1317.             for (uint32_t i=0; i < kData->audioOut.count; i++)

  1318.             {

  1319.                 if (fAudio16Buffers[i] != nullptr)

  1320.                 {

  1321.                     delete[] fAudio16Buffers[i];

  1322.                     fAudio16Buffers[i] = nullptr;

  1323.                 }

  1324.             }

  1325. 

  1326.             delete[] fAudio16Buffers;

  1327.             fAudio16Buffers = nullptr;

  1328.         }

  1329. 

  1330.         CarlaPlugin::deleteBuffers();

  1331. 

  1332.         carla_debug("FluidSynthPlugin::deleteBuffers() - end");

  1333.     }

  1334. 

  1335.     // -------------------------------------------------------------------

  1336. 

  1337.     bool init(const char* const filename, const char* const name, const char* const label)

  1338.     {

  1339.         CARLA_ASSERT(fSynth != nullptr);

  1340.         CARLA_ASSERT(filename != nullptr);

  1341.         CARLA_ASSERT(label != nullptr);

  1342. 

  1343.         // ---------------------------------------------------------------

  1344.         // open soundfont

  1345. 

  1346.         fSynthId = fluid_synth_sfload(fSynth, filename, 0);

  1347. 

  1348.         if (fSynthId < 0)

  1349.         {

  1350.             kData->engine->setLastError("Failed to load SoundFont file");

  1351.             return false;

  1352.         }

  1353. 

  1354.         // ---------------------------------------------------------------

  1355.         // get info

  1356. 

  1357.         fFilename = filename;

  1358.         fLabel    = label;

  1359. 

  1360.         if (name != nullptr)

  1361.             fName = kData->engine->getNewUniquePluginName(name);

  1362.         else

  1363.             fName = kData->engine->getNewUniquePluginName(label);

  1364. 

  1365.         // ---------------------------------------------------------------

  1366.         // register client

  1367. 

  1368.         kData->client = kData->engine->addClient(this);

  1369. 

  1370.         if (kData->client == nullptr || ! kData->client->isOk())

  1371.         {

  1372.             kData->engine->setLastError("Failed to register plugin client");

  1373.             return false;

  1374.         }

  1375. 

  1376.         return true;

  1377.     }

  1378. 

  1379. private:

  1380.     enum FluidSynthInputParameters {

  1381.         FluidSynthReverbOnOff    = 0,

  1382.         FluidSynthReverbRoomSize = 1,

  1383.         FluidSynthReverbDamp     = 2,

  1384.         FluidSynthReverbLevel    = 3,

  1385.         FluidSynthReverbWidth    = 4,

  1386.         FluidSynthChorusOnOff    = 5,

  1387.         FluidSynthChorusNr       = 6,

  1388.         FluidSynthChorusLevel    = 7,

  1389.         FluidSynthChorusSpeedHz  = 8,

  1390.         FluidSynthChorusDepthMs  = 9,

  1391.         FluidSynthChorusType     = 10,

  1392.         FluidSynthPolyphony      = 11,

  1393.         FluidSynthInterpolation  = 12,

  1394.         FluidSynthVoiceCount     = 13,

  1395.         FluidSynthParametersMax  = 14

  1396.     };

  1397. 

  1398.     const bool kUses16Outs;

  1399. 

  1400.     CarlaString fLabel;

  1401. 

  1402.     fluid_settings_t* fSettings;

  1403.     fluid_synth_t* fSynth;

  1404.     int fSynthId;

  1405. 

  1406.     float** fAudio16Buffers;

  1407.     double  fParamBuffers[FluidSynthParametersMax];

  1408. };

  1409. 

  1410. /**@}*/

  1411. 

  1412. CARLA_BACKEND_END_NAMESPACE

  1413. 

  1414. #else // WANT_FLUIDSYNTH

  1415. # warning fluidsynth not available (no SF2 support)

  1416. #endif

  1417. 

  1418. CARLA_BACKEND_START_NAMESPACE

  1419. 

  1420. CarlaPlugin* CarlaPlugin::newSF2(const Initializer& init, const bool use16Outs)

  1421. {

  1422.     carla_debug("CarlaPlugin::newSF2({%p, \"%s\", \"%s\", \"%s\"}, %s)", init.engine, init.filename, init.name, init.label, bool2str(use16Outs));

  1423. 

  1424. #ifdef WANT_FLUIDSYNTH

  1425.     if (! fluid_is_soundfont(init.filename))

  1426.     {

  1427.         init.engine->setLastError("Requested file is not a valid SoundFont");

  1428.         return nullptr;

  1429.     }

  1430. 

  1431.     if (init.engine->getProccessMode() == PROCESS_MODE_CONTINUOUS_RACK && use16Outs)

  1432.     {

  1433.         init.engine->setLastError("Carla's rack mode can only work with Stereo modules, please choose the 2-channel only SoundFont version");

  1434.         return nullptr;

  1435.     }

  1436. 

  1437.     FluidSynthPlugin* const plugin = new FluidSynthPlugin(init.engine, init.id,  use16Outs);

  1438. 

  1439.     if (! plugin->init(init.filename, init.name, init.label))

  1440.     {

  1441.         delete plugin;

  1442.         return nullptr;

  1443.     }

  1444. 

  1445.     plugin->reload();

  1446. 

  1447.     return plugin;

  1448. #else

  1449.     init.engine->setLastError("fluidsynth support not available");

  1450.     return nullptr;

  1451. 

  1452.     // unused

  1453.     (void)use16Outs;

  1454. #endif

  1455. }

  1456. 

  1457. CARLA_BACKEND_END_NAMESPACE