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Carla/source/backend/plugin/CarlaPluginLADSPA.cpp

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  1. /*

  2.  * Carla Plugin, LADSPA implementation

  3.  * Copyright (C) 2011-2018 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 doc/GPL.txt file.

  16.  */

  17. 

  18. #include "CarlaPluginInternal.hpp"

  19. #include "CarlaEngine.hpp"

  20. 

  21. #include "CarlaLadspaUtils.hpp"

  22. #include "CarlaMathUtils.hpp"

  23. 

  24. CARLA_BACKEND_START_NAMESPACE

  25. 

  26. // -----------------------------------------------------

  27. 

  28. class CarlaPluginLADSPA : public CarlaPlugin

  29. {

  30. public:

  31.     CarlaPluginLADSPA(CarlaEngine* const engine, const uint id) noexcept

  32.         : CarlaPlugin(engine, id),

  33.           fHandles(),

  34.           fDescriptor(nullptr),

  35.           fRdfDescriptor(nullptr),

  36.           fAudioInBuffers(nullptr),

  37.           fAudioOutBuffers(nullptr),

  38.           fExtraStereoBuffer(),

  39.           fParamBuffers(nullptr),

  40.           fLatencyIndex(-1),

  41.           fForcedStereoIn(false),

  42.           fForcedStereoOut(false),

  43.           fNeedsFixedBuffers(false)

  44.     {

  45.         carla_debug("CarlaPluginLADSPA::CarlaPluginLADSPA(%p, %i)", engine, id);

  46. 

  47.         carla_zeroPointers(fExtraStereoBuffer, 2);

  48.     }

  49. 

  50.     ~CarlaPluginLADSPA() noexcept override

  51.     {

  52.         carla_debug("CarlaPluginLADSPA::~CarlaPluginLADSPA()");

  53. 

  54.         pData->singleMutex.lock();

  55.         pData->masterMutex.lock();

  56. 

  57.         if (pData->client != nullptr && pData->client->isActive())

  58.             pData->client->deactivate();

  59. 

  60.         if (pData->active)

  61.         {

  62.             deactivate();

  63.             pData->active = false;

  64.         }

  65. 

  66.         if (fDescriptor != nullptr)

  67.         {

  68.             if (fDescriptor->cleanup != nullptr)

  69.             {

  70.                 for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin2(); it.valid(); it.next())

  71.                 {

  72.                     LADSPA_Handle const handle(it.getValue(nullptr));

  73.                     CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  74. 

  75.                     try {

  76.                         fDescriptor->cleanup(handle);

  77.                     } CARLA_SAFE_EXCEPTION("LADSPA cleanup");

  78.                 }

  79.             }

  80. 

  81.             fHandles.clear();

  82.             fDescriptor = nullptr;

  83.         }

  84. 

  85.         if (fRdfDescriptor != nullptr)

  86.         {

  87.             delete fRdfDescriptor;

  88.             fRdfDescriptor = nullptr;

  89.         }

  90. 

  91.         clearBuffers();

  92.     }

  93. 

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

  95.     // Information (base)

  96. 

  97.     PluginType getType() const noexcept override

  98.     {

  99.         return PLUGIN_LADSPA;

  100.     }

  101. 

  102.     PluginCategory getCategory() const noexcept override

  103.     {

  104.         if (fRdfDescriptor != nullptr)

  105.         {

  106.             const LADSPA_PluginType category(fRdfDescriptor->Type);

  107. 

  108.             // Specific Types

  109.             if (category & (LADSPA_PLUGIN_DELAY|LADSPA_PLUGIN_REVERB))

  110.                 return PLUGIN_CATEGORY_DELAY;

  111.             if (category & (LADSPA_PLUGIN_PHASER|LADSPA_PLUGIN_FLANGER|LADSPA_PLUGIN_CHORUS))

  112.                 return PLUGIN_CATEGORY_MODULATOR;

  113.             if (category & (LADSPA_PLUGIN_AMPLIFIER))

  114.                 return PLUGIN_CATEGORY_DYNAMICS;

  115.             if (category & (LADSPA_PLUGIN_UTILITY|LADSPA_PLUGIN_SPECTRAL|LADSPA_PLUGIN_FREQUENCY_METER))

  116.                 return PLUGIN_CATEGORY_UTILITY;

  117. 

  118.             // Pre-set LADSPA Types

  119.             if (LADSPA_IS_PLUGIN_DYNAMICS(category))

  120.                 return PLUGIN_CATEGORY_DYNAMICS;

  121.             if (LADSPA_IS_PLUGIN_AMPLITUDE(category))

  122.                 return PLUGIN_CATEGORY_MODULATOR;

  123.             if (LADSPA_IS_PLUGIN_EQ(category))

  124.                 return PLUGIN_CATEGORY_EQ;

  125.             if (LADSPA_IS_PLUGIN_FILTER(category))

  126.                 return PLUGIN_CATEGORY_FILTER;

  127.             if (LADSPA_IS_PLUGIN_FREQUENCY(category))

  128.                 return PLUGIN_CATEGORY_UTILITY;

  129.             if (LADSPA_IS_PLUGIN_SIMULATOR(category))

  130.                 return PLUGIN_CATEGORY_OTHER;

  131.             if (LADSPA_IS_PLUGIN_TIME(category))

  132.                 return PLUGIN_CATEGORY_DELAY;

  133.             if (LADSPA_IS_PLUGIN_GENERATOR(category))

  134.                 return PLUGIN_CATEGORY_SYNTH;

  135.         }

  136. 

  137.         return CarlaPlugin::getCategory();

  138.     }

  139. 

  140.     int64_t getUniqueId() const noexcept override

  141.     {

  142.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr, 0);

  143. 

  144.         return static_cast<int64_t>(fDescriptor->UniqueID);

  145.     }

  146. 

  147.     uint32_t getLatencyInFrames() const noexcept override

  148.     {

  149.         if (fLatencyIndex < 0 || fParamBuffers == nullptr)

  150.             return 0;

  151. 

  152.         const float latency(fParamBuffers[fLatencyIndex]);

  153.         CARLA_SAFE_ASSERT_RETURN(latency >= 0.0f, 0);

  154. 

  155.         return static_cast<uint32_t>(latency);

  156.     }

  157. 

  158.     // -------------------------------------------------------------------

  159.     // Information (count)

  160. 

  161.     uint32_t getParameterScalePointCount(const uint32_t parameterId) const noexcept override

  162.     {

  163.         CARLA_SAFE_ASSERT_RETURN(parameterId < pData->param.count, 0);

  164. 

  165.         if (fRdfDescriptor == nullptr)

  166.             return 0;

  167. 

  168.         const int32_t rindex(pData->param.data[parameterId].rindex);

  169.         CARLA_SAFE_ASSERT_RETURN(rindex >= 0, 0);

  170. 

  171.         if (rindex >= static_cast<int32_t>(fRdfDescriptor->PortCount))

  172.             return 0;

  173. 

  174.         const LADSPA_RDF_Port& port(fRdfDescriptor->Ports[rindex]);

  175.         return static_cast<uint32_t>(port.ScalePointCount);

  176.     }

  177. 

  178.     // -------------------------------------------------------------------

  179.     // Information (current data)

  180. 

  181.     // nothing

  182. 

  183.     // -------------------------------------------------------------------

  184.     // Information (per-plugin data)

  185. 

  186.     uint getOptionsAvailable() const noexcept override

  187.     {

  188.         uint options = 0x0;

  189. 

  190.         // can't disable fixed buffers if using latency

  191.         if (fLatencyIndex == -1 && ! fNeedsFixedBuffers)

  192.             options |= PLUGIN_OPTION_FIXED_BUFFERS;

  193. 

  194.         // can't disable forced stereo if enabled in the engine

  195.         if (pData->engine->getOptions().forceStereo)

  196.             pass();

  197.         // if inputs or outputs are just 1, then yes we can force stereo

  198.         else if (pData->audioIn.count == 1 || pData->audioOut.count == 1 || fForcedStereoIn || fForcedStereoOut)

  199.             options |= PLUGIN_OPTION_FORCE_STEREO;

  200. 

  201.         return options;

  202.     }

  203. 

  204.     float getParameterValue(const uint32_t parameterId) const noexcept override

  205.     {

  206.         CARLA_SAFE_ASSERT_RETURN(fParamBuffers != nullptr,         0.0f);

  207.         CARLA_SAFE_ASSERT_RETURN(parameterId < pData->param.count, 0.0f);

  208. 

  209.         // bad plugins might have set output values out of bounds

  210.         if (pData->param.data[parameterId].type == PARAMETER_OUTPUT)

  211.             return pData->param.ranges[parameterId].getFixedValue(fParamBuffers[parameterId]);

  212. 

  213.         // not output, should be fine

  214.         return fParamBuffers[parameterId];

  215.     }

  216. 

  217.     float getParameterScalePointValue(const uint32_t parameterId, const uint32_t scalePointId) const noexcept override

  218.     {

  219.         CARLA_SAFE_ASSERT_RETURN(fRdfDescriptor != nullptr,        0.0f);

  220.         CARLA_SAFE_ASSERT_RETURN(parameterId < pData->param.count, 0.0f);

  221. 

  222.         const int32_t rindex(pData->param.data[parameterId].rindex);

  223.         CARLA_SAFE_ASSERT_RETURN(rindex >= 0,                                              0.0f);

  224.         CARLA_SAFE_ASSERT_RETURN(rindex < static_cast<int32_t>(fRdfDescriptor->PortCount), 0.0f);

  225. 

  226.         const LADSPA_RDF_Port& port(fRdfDescriptor->Ports[rindex]);

  227.         CARLA_SAFE_ASSERT_RETURN(scalePointId < port.ScalePointCount, 0.0f);

  228. 

  229.         const LADSPA_RDF_ScalePoint& scalePoint(port.ScalePoints[scalePointId]);

  230.         return pData->param.ranges[parameterId].getFixedValue(scalePoint.Value);

  231.     }

  232. 

  233.     void getLabel(char* const strBuf) const noexcept override

  234.     {

  235.         CARLA_SAFE_ASSERT_RETURN(fDescriptor        != nullptr, nullStrBuf(strBuf));

  236.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->Label != nullptr, nullStrBuf(strBuf));

  237. 

  238.         std::strncpy(strBuf, fDescriptor->Label, STR_MAX);

  239.     }

  240. 

  241.     void getMaker(char* const strBuf) const noexcept override

  242.     {

  243.         CARLA_SAFE_ASSERT_RETURN(fDescriptor        != nullptr, nullStrBuf(strBuf));

  244.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->Maker != nullptr, nullStrBuf(strBuf));

  245. 

  246.         if (fRdfDescriptor != nullptr && fRdfDescriptor->Creator != nullptr)

  247.         {

  248.             std::strncpy(strBuf, fRdfDescriptor->Creator, STR_MAX);

  249.             return;

  250.         }

  251. 

  252.         std::strncpy(strBuf, fDescriptor->Maker, STR_MAX);

  253.     }

  254. 

  255.     void getCopyright(char* const strBuf) const noexcept override

  256.     {

  257.         CARLA_SAFE_ASSERT_RETURN(fDescriptor            != nullptr, nullStrBuf(strBuf));

  258.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->Copyright != nullptr, nullStrBuf(strBuf));

  259. 

  260.         std::strncpy(strBuf, fDescriptor->Copyright, STR_MAX);

  261.     }

  262. 

  263.     void getRealName(char* const strBuf) const noexcept override

  264.     {

  265.         CARLA_SAFE_ASSERT_RETURN(fDescriptor       != nullptr, nullStrBuf(strBuf));

  266.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->Name != nullptr, nullStrBuf(strBuf));

  267. 

  268.         if (fRdfDescriptor != nullptr && fRdfDescriptor->Title != nullptr)

  269.         {

  270.             std::strncpy(strBuf, fRdfDescriptor->Title, STR_MAX);

  271.             return;

  272.         }

  273. 

  274.         std::strncpy(strBuf, fDescriptor->Name, STR_MAX);

  275.     }

  276. 

  277.     void getParameterName(const uint32_t parameterId, char* const strBuf) const noexcept override

  278.     {

  279.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,           nullStrBuf(strBuf));

  280.         CARLA_SAFE_ASSERT_RETURN(parameterId < pData->param.count, nullStrBuf(strBuf));

  281. 

  282.         const int32_t rindex(pData->param.data[parameterId].rindex);

  283.         CARLA_SAFE_ASSERT_RETURN(rindex >= 0,                                           nullStrBuf(strBuf));

  284.         CARLA_SAFE_ASSERT_RETURN(rindex < static_cast<int32_t>(fDescriptor->PortCount), nullStrBuf(strBuf));

  285.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->PortNames[rindex] != nullptr,             nullStrBuf(strBuf));

  286. 

  287.         if (getSeparatedParameterNameOrUnit(fDescriptor->PortNames[rindex], strBuf, true))

  288.             return;

  289. 

  290.         std::strncpy(strBuf, fDescriptor->PortNames[rindex], STR_MAX);

  291.     }

  292. 

  293.     void getParameterUnit(const uint32_t parameterId, char* const strBuf) const noexcept override

  294.     {

  295.         CARLA_SAFE_ASSERT_RETURN(parameterId < pData->param.count, nullStrBuf(strBuf));

  296. 

  297.         const int32_t rindex(pData->param.data[parameterId].rindex);

  298.         CARLA_SAFE_ASSERT_RETURN(rindex >= 0, nullStrBuf(strBuf));

  299. 

  300.         if (fRdfDescriptor != nullptr && rindex < static_cast<int32_t>(fRdfDescriptor->PortCount))

  301.         {

  302.             const LADSPA_RDF_Port& port(fRdfDescriptor->Ports[rindex]);

  303. 

  304.             if (LADSPA_PORT_HAS_UNIT(port.Hints))

  305.             {

  306.                 switch (port.Unit)

  307.                 {

  308.                 case LADSPA_UNIT_DB:

  309.                     std::strncpy(strBuf, "dB", STR_MAX);

  310.                     return;

  311.                 case LADSPA_UNIT_COEF:

  312.                     std::strncpy(strBuf, "(coef)", STR_MAX);

  313.                     return;

  314.                 case LADSPA_UNIT_HZ:

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

  316.                     return;

  317.                 case LADSPA_UNIT_S:

  318.                     std::strncpy(strBuf, "s", STR_MAX);

  319.                     return;

  320.                 case LADSPA_UNIT_MS:

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

  322.                     return;

  323.                 case LADSPA_UNIT_MIN:

  324.                     std::strncpy(strBuf, "min", STR_MAX);

  325.                     return;

  326.                 }

  327.             }

  328.         }

  329. 

  330.         CARLA_SAFE_ASSERT_RETURN(rindex < static_cast<int32_t>(fDescriptor->PortCount), nullStrBuf(strBuf));

  331.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->PortNames[rindex] != nullptr,             nullStrBuf(strBuf));

  332. 

  333.         if (getSeparatedParameterNameOrUnit(fDescriptor->PortNames[rindex], strBuf, false))

  334.             return;

  335. 

  336.         nullStrBuf(strBuf);

  337.     }

  338. 

  339.     void getParameterSymbol(const uint32_t parameterId, char* const strBuf) const noexcept override

  340.     {

  341.         CARLA_SAFE_ASSERT_RETURN(parameterId < pData->param.count, nullStrBuf(strBuf));

  342. 

  343.         if (fRdfDescriptor == nullptr)

  344.             return nullStrBuf(strBuf);

  345. 

  346.         const int32_t rindex(pData->param.data[parameterId].rindex);

  347.         CARLA_SAFE_ASSERT_RETURN(rindex >= 0, nullStrBuf(strBuf));

  348. 

  349.         if (rindex >= static_cast<int32_t>(fRdfDescriptor->PortCount))

  350.             return nullStrBuf(strBuf);

  351. 

  352.         const LADSPA_RDF_Port& port(fRdfDescriptor->Ports[rindex]);

  353. 

  354.         if (! LADSPA_PORT_HAS_LABEL(port.Hints))

  355.             return nullStrBuf(strBuf);

  356. 

  357.         CARLA_SAFE_ASSERT_RETURN(port.Label != nullptr, nullStrBuf(strBuf));

  358. 

  359.         std::strncpy(strBuf, port.Label, STR_MAX);

  360.     }

  361. 

  362.     void getParameterScalePointLabel(const uint32_t parameterId, const uint32_t scalePointId, char* const strBuf) const noexcept override

  363.     {

  364.         CARLA_SAFE_ASSERT_RETURN(fRdfDescriptor != nullptr,        nullStrBuf(strBuf));

  365.         CARLA_SAFE_ASSERT_RETURN(parameterId < pData->param.count, nullStrBuf(strBuf));

  366. 

  367.         const int32_t rindex(pData->param.data[parameterId].rindex);

  368.         CARLA_SAFE_ASSERT_RETURN(rindex >= 0,                                              nullStrBuf(strBuf));

  369.         CARLA_SAFE_ASSERT_RETURN(rindex < static_cast<int32_t>(fRdfDescriptor->PortCount), nullStrBuf(strBuf));

  370. 

  371.         const LADSPA_RDF_Port& port(fRdfDescriptor->Ports[rindex]);

  372.         CARLA_SAFE_ASSERT_RETURN(scalePointId < port.ScalePointCount, nullStrBuf(strBuf));

  373. 

  374.         const LADSPA_RDF_ScalePoint& scalePoint(port.ScalePoints[scalePointId]);

  375.         CARLA_SAFE_ASSERT_RETURN(scalePoint.Label != nullptr, nullStrBuf(strBuf));

  376. 

  377.         std::strncpy(strBuf, scalePoint.Label, STR_MAX);

  378.     }

  379. 

  380.     // -------------------------------------------------------------------

  381.     // Set data (state)

  382. 

  383.     // nothing

  384. 

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

  386.     // Set data (internal stuff)

  387. 

  388.     // nothing

  389. 

  390.     // -------------------------------------------------------------------

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

  392. 

  393.     void setParameterValue(const uint32_t parameterId, const float value, const bool sendGui, const bool sendOsc, const bool sendCallback) noexcept override

  394.     {

  395.         CARLA_SAFE_ASSERT_RETURN(fParamBuffers != nullptr,);

  396.         CARLA_SAFE_ASSERT_RETURN(parameterId < pData->param.count,);

  397. 

  398.         const float fixedValue(pData->param.getFixedValue(parameterId, value));

  399.         fParamBuffers[parameterId] = fixedValue;

  400. 

  401.         CarlaPlugin::setParameterValue(parameterId, fixedValue, sendGui, sendOsc, sendCallback);

  402.     }

  403. 

  404.     void setParameterValueRT(const uint32_t parameterId, const float value) noexcept override

  405.     {

  406.         CARLA_SAFE_ASSERT_RETURN(fParamBuffers != nullptr,);

  407.         CARLA_SAFE_ASSERT_RETURN(parameterId < pData->param.count,);

  408. 

  409.         const float fixedValue(pData->param.getFixedValue(parameterId, value));

  410.         fParamBuffers[parameterId] = fixedValue;

  411. 

  412.         CarlaPlugin::setParameterValueRT(parameterId, fixedValue);

  413.     }

  414. 

  415.     // -------------------------------------------------------------------

  416.     // Misc

  417. 

  418.     // nothing

  419. 

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

  421.     // Plugin state

  422. 

  423.     void reload() override

  424.     {

  425.         CARLA_SAFE_ASSERT_RETURN(pData->engine != nullptr,);

  426.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  427.         CARLA_SAFE_ASSERT_RETURN(fHandles.count() > 0,);

  428.         carla_debug("CarlaPluginLADSPA::reload() - start");

  429. 

  430.         const EngineProcessMode processMode(pData->engine->getProccessMode());

  431. 

  432.         // Safely disable plugin for reload

  433.         const ScopedDisabler sd(this);

  434. 

  435.         if (pData->active)

  436.             deactivate();

  437. 

  438.         clearBuffers();

  439. 

  440.         const float sampleRate(static_cast<float>(pData->engine->getSampleRate()));

  441.         const uint32_t portCount(getSafePortCount());

  442. 

  443.         uint32_t aIns, aOuts, params;

  444.         aIns = aOuts = params = 0;

  445. 

  446.         bool forcedStereoIn, forcedStereoOut;

  447.         forcedStereoIn = forcedStereoOut = false;

  448. 

  449.         bool needsCtrlIn, needsCtrlOut;

  450.         needsCtrlIn = needsCtrlOut = false;

  451. 

  452.         for (uint32_t i=0; i < portCount; ++i)

  453.         {

  454.             const LADSPA_PortDescriptor portType(fDescriptor->PortDescriptors[i]);

  455. 

  456.             if (LADSPA_IS_PORT_AUDIO(portType))

  457.             {

  458.                 if (LADSPA_IS_PORT_INPUT(portType))

  459.                     aIns += 1;

  460.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  461.                     aOuts += 1;

  462.             }

  463.             else if (LADSPA_IS_PORT_CONTROL(portType))

  464.                 params += 1;

  465.         }

  466. 

  467.         if (pData->options & PLUGIN_OPTION_FORCE_STEREO)

  468.         {

  469.             if ((aIns == 1 || aOuts == 1) && fHandles.count() == 1 && addInstance())

  470.             {

  471.                 if (aIns == 1)

  472.                 {

  473.                     aIns = 2;

  474.                     forcedStereoIn = true;

  475.                 }

  476.                 if (aOuts == 1)

  477.                 {

  478.                     aOuts = 2;

  479.                     forcedStereoOut = true;

  480.                 }

  481.             }

  482.         }

  483. 

  484.         if (aIns > 0)

  485.         {

  486.             pData->audioIn.createNew(aIns);

  487.             fAudioInBuffers = new float*[aIns];

  488. 

  489.             for (uint32_t i=0; i < aIns; ++i)

  490.                 fAudioInBuffers[i] = nullptr;

  491.         }

  492. 

  493.         if (aOuts > 0)

  494.         {

  495.             pData->audioOut.createNew(aOuts);

  496.             fAudioOutBuffers = new float*[aOuts];

  497.             needsCtrlIn = true;

  498. 

  499.             for (uint32_t i=0; i < aOuts; ++i)

  500.                 fAudioOutBuffers[i] = nullptr;

  501.         }

  502. 

  503.         if (params > 0)

  504.         {

  505.             pData->param.createNew(params, true);

  506. 

  507.             fParamBuffers = new float[params];

  508.             carla_zeroFloats(fParamBuffers, params);

  509.         }

  510. 

  511.         const uint portNameSize(pData->engine->getMaxPortNameSize());

  512.         CarlaString portName;

  513. 

  514.         for (uint32_t i=0, iAudioIn=0, iAudioOut=0, iCtrl=0; i < portCount; ++i)

  515.         {

  516.             const LADSPA_PortDescriptor portType      = fDescriptor->PortDescriptors[i];

  517.             const LADSPA_PortRangeHint portRangeHints = fDescriptor->PortRangeHints[i];

  518.             const bool hasPortRDF = (fRdfDescriptor != nullptr && i < fRdfDescriptor->PortCount);

  519. 

  520.             if (LADSPA_IS_PORT_AUDIO(portType))

  521.             {

  522.                 portName.clear();

  523. 

  524.                 if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  525.                 {

  526.                     portName  = pData->name;

  527.                     portName += ":";

  528.                 }

  529. 

  530.                 if (fDescriptor->PortNames[i] != nullptr && fDescriptor->PortNames[i][0] != '\0')

  531.                 {

  532.                     portName += fDescriptor->PortNames[i];

  533.                 }

  534.                 else

  535.                 {

  536.                     if (LADSPA_IS_PORT_INPUT(portType))

  537.                     {

  538.                         if (aIns > 1)

  539.                         {

  540.                             portName += "audio-in_";

  541.                             portName += CarlaString(iAudioIn+1);

  542.                         }

  543.                         else

  544.                             portName += "audio-in";

  545.                     }

  546.                     else

  547.                     {

  548.                         if (aOuts > 1)

  549.                         {

  550.                             portName += "audio-out_";

  551.                             portName += CarlaString(iAudioOut+1);

  552.                         }

  553.                         else

  554.                             portName += "audio-out";

  555.                     }

  556.                 }

  557. 

  558.                 portName.truncate(portNameSize);

  559. 

  560.                 if (LADSPA_IS_PORT_INPUT(portType))

  561.                 {

  562.                     const uint32_t j = iAudioIn++;

  563.                     pData->audioIn.ports[j].port   = (CarlaEngineAudioPort*)pData->client->addPort(kEnginePortTypeAudio, portName, true, j);

  564.                     pData->audioIn.ports[j].rindex = i;

  565. 

  566.                     if (forcedStereoIn)

  567.                     {

  568.                         portName += "_2";

  569.                         pData->audioIn.ports[1].port   = (CarlaEngineAudioPort*)pData->client->addPort(kEnginePortTypeAudio, portName, true, 1);

  570.                         pData->audioIn.ports[1].rindex = i;

  571.                     }

  572.                 }

  573.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  574.                 {

  575.                     const uint32_t j = iAudioOut++;

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

  577.                     pData->audioOut.ports[j].rindex = i;

  578. 

  579.                     if (forcedStereoOut)

  580.                     {

  581.                         portName += "_2";

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

  583.                         pData->audioOut.ports[1].rindex = i;

  584.                     }

  585.                 }

  586.                 else

  587.                     carla_stderr2("WARNING - Got a broken Port (Audio, but not input or output)");

  588.             }

  589.             else if (LADSPA_IS_PORT_CONTROL(portType))

  590.             {

  591.                 const uint32_t j = iCtrl++;

  592.                 pData->param.data[j].index  = static_cast<int32_t>(j);

  593.                 pData->param.data[j].rindex = static_cast<int32_t>(i);

  594. 

  595.                 const char* const paramName(fDescriptor->PortNames[i] != nullptr ? fDescriptor->PortNames[i] : "unknown");

  596. 

  597.                 float min, max, def, step, stepSmall, stepLarge;

  598. 

  599.                 // min value

  600.                 if (LADSPA_IS_HINT_BOUNDED_BELOW(portRangeHints.HintDescriptor))

  601.                     min = portRangeHints.LowerBound;

  602.                 else

  603.                     min = 0.0f;

  604. 

  605.                 // max value

  606.                 if (LADSPA_IS_HINT_BOUNDED_ABOVE(portRangeHints.HintDescriptor))

  607.                     max = portRangeHints.UpperBound;

  608.                 else

  609.                     max = 1.0f;

  610. 

  611.                 if (LADSPA_IS_HINT_SAMPLE_RATE(portRangeHints.HintDescriptor))

  612.                 {

  613.                     min *= sampleRate;

  614.                     max *= sampleRate;

  615.                     pData->param.data[j].hints |= PARAMETER_USES_SAMPLERATE;

  616.                 }

  617. 

  618.                 if (min >= max)

  619.                 {

  620.                     carla_stderr2("WARNING - Broken plugin parameter '%s': min >= max", paramName);

  621.                     max = min + 0.1f;

  622.                 }

  623. 

  624.                 // default value

  625.                 if (hasPortRDF && LADSPA_PORT_HAS_DEFAULT(fRdfDescriptor->Ports[i].Hints))

  626.                     def = fRdfDescriptor->Ports[i].Default;

  627.                 else

  628.                     def = get_default_ladspa_port_value(portRangeHints.HintDescriptor, min, max);

  629. 

  630.                 if (def < min)

  631.                     def = min;

  632.                 else if (def > max)

  633.                     def = max;

  634. 

  635.                 if (LADSPA_IS_HINT_TOGGLED(portRangeHints.HintDescriptor))

  636.                 {

  637.                     step = max - min;

  638.                     stepSmall = step;

  639.                     stepLarge = step;

  640.                     pData->param.data[j].hints |= PARAMETER_IS_BOOLEAN;

  641.                 }

  642.                 else if (LADSPA_IS_HINT_INTEGER(portRangeHints.HintDescriptor))

  643.                 {

  644.                     step = 1.0f;

  645.                     stepSmall = 1.0f;

  646.                     stepLarge = 10.0f;

  647.                     pData->param.data[j].hints |= PARAMETER_IS_INTEGER;

  648.                 }

  649.                 else

  650.                 {

  651.                     const float range = max - min;

  652.                     step = range/100.0f;

  653.                     stepSmall = range/1000.0f;

  654.                     stepLarge = range/10.0f;

  655.                 }

  656. 

  657.                 if (LADSPA_IS_PORT_INPUT(portType))

  658.                 {

  659.                     pData->param.data[j].type   = PARAMETER_INPUT;

  660.                     pData->param.data[j].hints |= PARAMETER_IS_ENABLED;

  661.                     pData->param.data[j].hints |= PARAMETER_IS_AUTOMABLE;

  662.                     needsCtrlIn = true;

  663.                 }

  664.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  665.                 {

  666.                     pData->param.data[j].type = PARAMETER_OUTPUT;

  667. 

  668.                     if (std::strcmp(paramName, "latency") == 0 || std::strcmp(paramName, "_latency") == 0)

  669.                     {

  670.                         min = 0.0f;

  671.                         max = sampleRate;

  672.                         def = 0.0f;

  673.                         step = 1.0f;

  674.                         stepSmall = 1.0f;

  675.                         stepLarge = 1.0f;

  676.                         pData->param.special[j] = PARAMETER_SPECIAL_LATENCY;

  677.                         CARLA_SAFE_ASSERT_INT2(fLatencyIndex == static_cast<int32_t>(j), fLatencyIndex, j);

  678.                     }

  679.                     else

  680.                     {

  681.                         pData->param.data[j].hints |= PARAMETER_IS_ENABLED;

  682.                         pData->param.data[j].hints |= PARAMETER_IS_AUTOMABLE;

  683.                         needsCtrlOut = true;

  684.                     }

  685.                 }

  686.                 else

  687.                 {

  688.                     carla_stderr2("WARNING - Got a broken Port (Control, but not input or output)");

  689.                 }

  690. 

  691.                 // extra parameter hints

  692.                 if (LADSPA_IS_HINT_LOGARITHMIC(portRangeHints.HintDescriptor))

  693.                     pData->param.data[j].hints |= PARAMETER_IS_LOGARITHMIC;

  694. 

  695.                 // check for scalepoints, require at least 2 to make it useful

  696.                 if (hasPortRDF && fRdfDescriptor->Ports[i].ScalePointCount >= 2)

  697.                     pData->param.data[j].hints |= PARAMETER_USES_SCALEPOINTS;

  698. 

  699.                 pData->param.ranges[j].min = min;

  700.                 pData->param.ranges[j].max = max;

  701.                 pData->param.ranges[j].def = def;

  702.                 pData->param.ranges[j].step = step;

  703.                 pData->param.ranges[j].stepSmall = stepSmall;

  704.                 pData->param.ranges[j].stepLarge = stepLarge;

  705. 

  706.                 // Start parameters in their default values

  707.                 fParamBuffers[j] = def;

  708. 

  709.                 for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin2(); it.valid(); it.next())

  710.                 {

  711.                     LADSPA_Handle const handle(it.getValue(nullptr));

  712.                     CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  713. 

  714.                     try {

  715.                         fDescriptor->connect_port(handle, i, &fParamBuffers[j]);

  716.                     } CARLA_SAFE_EXCEPTION("LADSPA connect_port (parameter)");

  717.                 }

  718.             }

  719.             else

  720.             {

  721.                 // Not Audio or Control

  722.                 carla_stderr2("ERROR - Got a broken Port (neither Audio or Control)");

  723. 

  724.                 for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin2(); it.valid(); it.next())

  725.                 {

  726.                     LADSPA_Handle const handle(it.getValue(nullptr));

  727.                     CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  728. 

  729.                     try {

  730.                         fDescriptor->connect_port(handle, i, nullptr);

  731.                     } CARLA_SAFE_EXCEPTION("LADSPA connect_port (null)");

  732.                 }

  733.             }

  734.         }

  735. 

  736.         if (needsCtrlIn)

  737.         {

  738.             portName.clear();

  739. 

  740.             if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  741.             {

  742.                 portName  = pData->name;

  743.                 portName += ":";

  744.             }

  745. 

  746.             portName += "events-in";

  747.             portName.truncate(portNameSize);

  748. 

  749.             pData->event.portIn = (CarlaEngineEventPort*)pData->client->addPort(kEnginePortTypeEvent, portName, true, 0);

  750.         }

  751. 

  752.         if (needsCtrlOut)

  753.         {

  754.             portName.clear();

  755. 

  756.             if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  757.             {

  758.                 portName  = pData->name;

  759.                 portName += ":";

  760.             }

  761. 

  762.             portName += "events-out";

  763.             portName.truncate(portNameSize);

  764. 

  765.             pData->event.portOut = (CarlaEngineEventPort*)pData->client->addPort(kEnginePortTypeEvent, portName, false, 0);

  766.         }

  767. 

  768.         if (forcedStereoIn || forcedStereoOut)

  769.             pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  770.         else

  771.             pData->options &= ~PLUGIN_OPTION_FORCE_STEREO;

  772. 

  773.         // plugin hints

  774.         pData->hints = 0x0;

  775. 

  776.         if (LADSPA_IS_HARD_RT_CAPABLE(fDescriptor->Properties))

  777.             pData->hints |= PLUGIN_IS_RTSAFE;

  778. 

  779. #ifndef BUILD_BRIDGE

  780.         if (aOuts > 0 && (aIns == aOuts || aIns == 1))

  781.             pData->hints |= PLUGIN_CAN_DRYWET;

  782. 

  783.         if (aOuts > 0)

  784.             pData->hints |= PLUGIN_CAN_VOLUME;

  785. 

  786.         if (aOuts >= 2 && aOuts % 2 == 0)

  787.             pData->hints |= PLUGIN_CAN_BALANCE;

  788. #endif

  789. 

  790.         // extra plugin hints

  791.         pData->extraHints  = 0x0;

  792.         pData->extraHints |= PLUGIN_EXTRA_HINT_CAN_RUN_RACK;

  793. 

  794.         // check initial latency

  795.         findInitialLatencyValue(aIns, aOuts);

  796. 

  797.         fForcedStereoIn  = forcedStereoIn;

  798.         fForcedStereoOut = forcedStereoOut;

  799. 

  800.         bufferSizeChanged(pData->engine->getBufferSize());

  801. 

  802.         if (pData->active)

  803.             activate();

  804. 

  805.         carla_debug("CarlaPluginLADSPA::reload() - end");

  806.     }

  807. 

  808.     void findInitialLatencyValue(const uint32_t aIns, const uint32_t aOuts) const

  809.     {

  810.         if (fLatencyIndex < 0 || fHandles.count() == 0)

  811.             return;

  812. 

  813.         // we need to pre-run the plugin so it can update its latency control-port

  814.         const LADSPA_Handle handle(fHandles.getFirst(nullptr));

  815.         CARLA_SAFE_ASSERT_RETURN(handle != nullptr,);

  816. 

  817.         float tmpIn [(aIns > 0)  ? aIns  : 1][2];

  818.         float tmpOut[(aOuts > 0) ? aOuts : 1][2];

  819. 

  820.         for (uint32_t j=0; j < aIns; ++j)

  821.         {

  822.             tmpIn[j][0] = 0.0f;

  823.             tmpIn[j][1] = 0.0f;

  824. 

  825.             try {

  826.                 fDescriptor->connect_port(handle, pData->audioIn.ports[j].rindex, tmpIn[j]);

  827.             } CARLA_SAFE_EXCEPTION("LADSPA connect_port (latency input)");

  828.         }

  829. 

  830.         for (uint32_t j=0; j < aOuts; ++j)

  831.         {

  832.             tmpOut[j][0] = 0.0f;

  833.             tmpOut[j][1] = 0.0f;

  834. 

  835.             try {

  836.                 fDescriptor->connect_port(handle, pData->audioOut.ports[j].rindex, tmpOut[j]);

  837.             } CARLA_SAFE_EXCEPTION("LADSPA connect_port (latency output)");

  838.         }

  839. 

  840.         if (fDescriptor->activate != nullptr)

  841.         {

  842.             try {

  843.                 fDescriptor->activate(handle);

  844.             } CARLA_SAFE_EXCEPTION("LADSPA latency activate");

  845.         }

  846. 

  847.         try {

  848.             fDescriptor->run(handle, 2);

  849.         } CARLA_SAFE_EXCEPTION("LADSPA latency run");

  850. 

  851.         if (fDescriptor->deactivate != nullptr)

  852.         {

  853.             try {

  854.                 fDescriptor->deactivate(handle);

  855.             } CARLA_SAFE_EXCEPTION("LADSPA latency deactivate");

  856.         }

  857. 

  858.         // done, let's get the value

  859.         if (const uint32_t latency = getLatencyInFrames())

  860.         {

  861.             pData->client->setLatency(latency);

  862. #ifndef BUILD_BRIDGE

  863.             pData->latency.recreateBuffers(std::max(aIns, aOuts), latency);

  864. #endif

  865.         }

  866.     }

  867. 

  868.     // -------------------------------------------------------------------

  869.     // Plugin processing

  870. 

  871.     void activate() noexcept override

  872.     {

  873.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  874. 

  875.         if (fDescriptor->activate != nullptr)

  876.         {

  877.             for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin2(); it.valid(); it.next())

  878.             {

  879.                 LADSPA_Handle const handle(it.getValue(nullptr));

  880.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  881. 

  882.                 try {

  883.                     fDescriptor->activate(handle);

  884.                 } CARLA_SAFE_EXCEPTION("LADSPA activate");

  885.             }

  886.         }

  887.     }

  888. 

  889.     void deactivate() noexcept override

  890.     {

  891.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  892. 

  893.         if (fDescriptor->deactivate != nullptr)

  894.         {

  895.             for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin2(); it.valid(); it.next())

  896.             {

  897.                 LADSPA_Handle const handle(it.getValue(nullptr));

  898.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  899. 

  900.                 try {

  901.                     fDescriptor->deactivate(handle);

  902.                 } CARLA_SAFE_EXCEPTION("LADSPA deactivate");

  903.             }

  904.         }

  905.     }

  906. 

  907.     void process(const float** const audioIn, float** const audioOut, const float** const, float** const, const uint32_t frames) override

  908.     {

  909.         // --------------------------------------------------------------------------------------------------------

  910.         // Check if active

  911. 

  912.         if (! pData->active)

  913.         {

  914.             // disable any output sound

  915.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  916.                 carla_zeroFloats(audioOut[i], frames);

  917.             return;

  918.         }

  919. 

  920.         // --------------------------------------------------------------------------------------------------------

  921.         // Check if needs reset

  922. 

  923.         if (pData->needsReset)

  924.         {

  925.             // nothing to do

  926.             pData->needsReset = false;

  927.         }

  928. 

  929.         // --------------------------------------------------------------------------------------------------------

  930.         // Event Input and Processing

  931. 

  932.         if (pData->event.portIn != nullptr)

  933.         {

  934.             // ----------------------------------------------------------------------------------------------------

  935.             // Event Input (System)

  936. 

  937.             const bool isSampleAccurate = (pData->options & PLUGIN_OPTION_FIXED_BUFFERS) == 0;

  938. 

  939.             uint32_t timeOffset = 0;

  940. 

  941.             for (uint32_t i=0, numEvents=pData->event.portIn->getEventCount(); i < numEvents; ++i)

  942.             {

  943.                 const EngineEvent& event(pData->event.portIn->getEvent(i));

  944. 

  945.                 if (event.time >= frames)

  946.                     continue;

  947. 

  948.                 CARLA_ASSERT_INT2(event.time >= timeOffset, event.time, timeOffset);

  949. 

  950.                 if (isSampleAccurate && event.time > timeOffset)

  951.                 {

  952.                     if (processSingle(audioIn, audioOut, event.time - timeOffset, timeOffset))

  953.                         timeOffset = event.time;

  954.                 }

  955. 

  956.                 switch (event.type)

  957.                 {

  958.                 case kEngineEventTypeNull:

  959.                     break;

  960. 

  961.                 case kEngineEventTypeControl: {

  962.                     const EngineControlEvent& ctrlEvent(event.ctrl);

  963. 

  964.                     switch (ctrlEvent.type)

  965.                     {

  966.                     case kEngineControlEventTypeNull:

  967.                         break;

  968. 

  969.                     case kEngineControlEventTypeParameter: {

  970. #ifndef BUILD_BRIDGE

  971.                         // Control backend stuff

  972.                         if (event.channel == pData->ctrlChannel)

  973.                         {

  974.                             float value;

  975. 

  976.                             if (MIDI_IS_CONTROL_BREATH_CONTROLLER(ctrlEvent.param) && (pData->hints & PLUGIN_CAN_DRYWET) != 0)

  977.                             {

  978.                                 value = ctrlEvent.value;

  979.                                 setDryWetRT(value);

  980.                             }

  981. 

  982.                             if (MIDI_IS_CONTROL_CHANNEL_VOLUME(ctrlEvent.param) && (pData->hints & PLUGIN_CAN_VOLUME) != 0)

  983.                             {

  984.                                 value = ctrlEvent.value*127.0f/100.0f;

  985.                                 setVolumeRT(value);

  986.                             }

  987. 

  988.                             if (MIDI_IS_CONTROL_BALANCE(ctrlEvent.param) && (pData->hints & PLUGIN_CAN_BALANCE) != 0)

  989.                             {

  990.                                 float left, right;

  991.                                 value = ctrlEvent.value/0.5f - 1.0f;

  992. 

  993.                                 if (value < 0.0f)

  994.                                 {

  995.                                     left  = -1.0f;

  996.                                     right = (value*2.0f)+1.0f;

  997.                                 }

  998.                                 else if (value > 0.0f)

  999.                                 {

  1000.                                     left  = (value*2.0f)-1.0f;

  1001.                                     right = 1.0f;

  1002.                                 }

  1003.                                 else

  1004.                                 {

  1005.                                     left  = -1.0f;

  1006.                                     right = 1.0f;

  1007.                                 }

  1008. 

  1009.                                 setBalanceLeftRT(left);

  1010.                                 setBalanceRightRT(right);

  1011.                             }

  1012.                         }

  1013. #endif

  1014.                         // Control plugin parameters

  1015.                         for (uint32_t k=0; k < pData->param.count; ++k)

  1016.                         {

  1017.                             if (pData->param.data[k].midiChannel != event.channel)

  1018.                                 continue;

  1019.                             if (pData->param.data[k].midiCC != ctrlEvent.param)

  1020.                                 continue;

  1021.                             if (pData->param.data[k].type != PARAMETER_INPUT)

  1022.                                 continue;

  1023.                             if ((pData->param.data[k].hints & PARAMETER_IS_AUTOMABLE) == 0)

  1024.                                 continue;

  1025. 

  1026.                             float value;

  1027. 

  1028.                             if (pData->param.data[k].hints & PARAMETER_IS_BOOLEAN)

  1029.                             {

  1030.                                 value = (ctrlEvent.value < 0.5f) ? pData->param.ranges[k].min : pData->param.ranges[k].max;

  1031.                             }

  1032.                             else

  1033.                             {

  1034.                                 if (pData->param.data[k].hints & PARAMETER_IS_LOGARITHMIC)

  1035.                                     value = pData->param.ranges[k].getUnnormalizedLogValue(ctrlEvent.value);

  1036.                                 else

  1037.                                     value = pData->param.ranges[k].getUnnormalizedValue(ctrlEvent.value);

  1038. 

  1039.                                 if (pData->param.data[k].hints & PARAMETER_IS_INTEGER)

  1040.                                     value = std::rint(value);

  1041.                             }

  1042. 

  1043.                             setParameterValueRT(k, value);

  1044.                         }

  1045. 

  1046.                         break;

  1047.                     } // case kEngineControlEventTypeParameter

  1048. 

  1049.                     case kEngineControlEventTypeMidiBank:

  1050.                     case kEngineControlEventTypeMidiProgram:

  1051.                     case kEngineControlEventTypeAllSoundOff:

  1052.                     case kEngineControlEventTypeAllNotesOff:

  1053.                         break;

  1054.                     } // switch (ctrlEvent.type)

  1055.                     break;

  1056.                 } // case kEngineEventTypeControl

  1057. 

  1058.                 case kEngineEventTypeMidi:

  1059.                     break;

  1060.                 } // switch (event.type)

  1061.             }

  1062. 

  1063.             pData->postRtEvents.trySplice();

  1064. 

  1065.             if (frames > timeOffset)

  1066.                 processSingle(audioIn, audioOut, frames - timeOffset, timeOffset);

  1067. 

  1068.         } // End of Event Input and Processing

  1069. 

  1070.         // --------------------------------------------------------------------------------------------------------

  1071.         // Plugin processing (no events)

  1072. 

  1073.         else

  1074.         {

  1075.             processSingle(audioIn, audioOut, frames, 0);

  1076. 

  1077.         } // End of Plugin processing (no events)

  1078. 

  1079.         // --------------------------------------------------------------------------------------------------------

  1080.         // Control Output

  1081. 

  1082.         if (pData->event.portOut != nullptr)

  1083.         {

  1084.             uint8_t  channel;

  1085.             uint16_t param;

  1086.             float    value;

  1087. 

  1088.             for (uint32_t k=0; k < pData->param.count; ++k)

  1089.             {

  1090.                 if (pData->param.data[k].type != PARAMETER_OUTPUT)

  1091.                     continue;

  1092. 

  1093.                 pData->param.ranges[k].fixValue(fParamBuffers[k]);

  1094. 

  1095.                 if (pData->param.data[k].midiCC > 0)

  1096.                 {

  1097.                     channel = pData->param.data[k].midiChannel;

  1098.                     param   = static_cast<uint16_t>(pData->param.data[k].midiCC);

  1099.                     value   = pData->param.ranges[k].getNormalizedValue(fParamBuffers[k]);

  1100.                     pData->event.portOut->writeControlEvent(0, channel, kEngineControlEventTypeParameter, param, value);

  1101.                 }

  1102.             }

  1103.         } // End of Control Output

  1104.     }

  1105. 

  1106.     bool processSingle(const float** const audioIn, float** const audioOut, const uint32_t frames,

  1107.                        const uint32_t timeOffset)

  1108.     {

  1109.         CARLA_SAFE_ASSERT_RETURN(frames > 0, false);

  1110. 

  1111.         if (pData->audioIn.count > 0)

  1112.         {

  1113.             CARLA_SAFE_ASSERT_RETURN(audioIn != nullptr, false);

  1114.         }

  1115.         if (pData->audioOut.count > 0)

  1116.         {

  1117.             CARLA_SAFE_ASSERT_RETURN(audioOut != nullptr, false);

  1118.         }

  1119. 

  1120.         // --------------------------------------------------------------------------------------------------------

  1121.         // Try lock, silence otherwise

  1122. 

  1123. #ifndef STOAT_TEST_BUILD

  1124.         if (pData->engine->isOffline())

  1125.         {

  1126.             pData->singleMutex.lock();

  1127.         }

  1128.         else

  1129. #endif

  1130.         if (! pData->singleMutex.tryLock())

  1131.         {

  1132.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1133.             {

  1134.                 for (uint32_t k=0; k < frames; ++k)

  1135.                     audioOut[i][k+timeOffset] = 0.0f;

  1136.             }

  1137. 

  1138.             return false;

  1139.         }

  1140. 

  1141.         // --------------------------------------------------------------------------------------------------------

  1142.         // Set audio buffers

  1143. 

  1144.         const bool customMonoOut   = pData->audioOut.count == 2 && fForcedStereoOut && ! fForcedStereoIn;

  1145.         const bool customStereoOut = pData->audioOut.count == 2 && fForcedStereoIn  && ! fForcedStereoOut;

  1146. 

  1147.         if (! customMonoOut)

  1148.         {

  1149.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1150.                 carla_zeroFloats(fAudioOutBuffers[i], frames);

  1151.         }

  1152. 

  1153.         for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1154.             carla_copyFloats(fAudioInBuffers[i], audioIn[i]+timeOffset, frames);

  1155. 

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

  1157.         // Run plugin

  1158. 

  1159.         uint instn = 0;

  1160.         for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin2(); it.valid(); it.next(), ++instn)

  1161.         {

  1162.             LADSPA_Handle const handle(it.getValue(nullptr));

  1163.             CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  1164. 

  1165.             // ----------------------------------------------------------------------------------------------------

  1166.             // Mixdown for forced stereo

  1167. 

  1168.             if (customMonoOut)

  1169.                 carla_zeroFloats(fAudioOutBuffers[instn], frames);

  1170. 

  1171.             // ----------------------------------------------------------------------------------------------------

  1172.             // Run it

  1173. 

  1174.             try {

  1175.                 fDescriptor->run(handle, frames);

  1176.             } CARLA_SAFE_EXCEPTION("LADSPA run");

  1177. 

  1178.             // ----------------------------------------------------------------------------------------------------

  1179.             // Mixdown for forced stereo

  1180. 

  1181.             if (customMonoOut)

  1182.                 carla_multiply(fAudioOutBuffers[instn], 0.5f, frames);

  1183.             else if (customStereoOut)

  1184.                 carla_copyFloats(fExtraStereoBuffer[instn], fAudioOutBuffers[instn], frames);

  1185.         }

  1186. 

  1187.         if (customStereoOut)

  1188.         {

  1189.             carla_copyFloats(fAudioOutBuffers[0], fExtraStereoBuffer[0], frames);

  1190.             carla_copyFloats(fAudioOutBuffers[1], fExtraStereoBuffer[1], frames);

  1191.         }

  1192. 

  1193. #ifndef BUILD_BRIDGE

  1194.         // --------------------------------------------------------------------------------------------------------

  1195.         // Post-processing (dry/wet, volume and balance)

  1196. 

  1197.         {

  1198.             const bool doDryWet  = (pData->hints & PLUGIN_CAN_DRYWET) != 0 && carla_isNotEqual(pData->postProc.dryWet, 1.0f);

  1199.             const bool doBalance = (pData->hints & PLUGIN_CAN_BALANCE) != 0 && ! (carla_isEqual(pData->postProc.balanceLeft, -1.0f) && carla_isEqual(pData->postProc.balanceRight, 1.0f));

  1200.             const bool isMono    = (pData->audioIn.count == 1);

  1201. 

  1202.             bool isPair;

  1203.             float bufValue, oldBufLeft[doBalance ? frames : 1];

  1204. 

  1205.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1206.             {

  1207.                 // Dry/Wet

  1208.                 if (doDryWet)

  1209.                 {

  1210.                     const uint32_t c = isMono ? 0 : i;

  1211. 

  1212.                     for (uint32_t k=0; k < frames; ++k)

  1213.                     {

  1214.                         if (k < pData->latency.frames)

  1215.                             bufValue = pData->latency.buffers[c][k];

  1216.                         else if (pData->latency.frames < frames)

  1217.                             bufValue = fAudioInBuffers[c][k-pData->latency.frames];

  1218.                         else

  1219.                             bufValue = fAudioInBuffers[c][k];

  1220. 

  1221.                         fAudioOutBuffers[i][k] = (fAudioOutBuffers[i][k] * pData->postProc.dryWet) + (bufValue * (1.0f - pData->postProc.dryWet));

  1222.                     }

  1223.                 }

  1224. 

  1225.                 // Balance

  1226.                 if (doBalance)

  1227.                 {

  1228.                     isPair = (i % 2 == 0);

  1229. 

  1230.                     if (isPair)

  1231.                     {

  1232.                         CARLA_ASSERT(i+1 < pData->audioOut.count);

  1233.                         carla_copyFloats(oldBufLeft, fAudioOutBuffers[i], frames);

  1234.                     }

  1235. 

  1236.                     float balRangeL = (pData->postProc.balanceLeft  + 1.0f)/2.0f;

  1237.                     float balRangeR = (pData->postProc.balanceRight + 1.0f)/2.0f;

  1238. 

  1239.                     for (uint32_t k=0; k < frames; ++k)

  1240.                     {

  1241.                         if (isPair)

  1242.                         {

  1243.                             // left

  1244.                             fAudioOutBuffers[i][k]  = oldBufLeft[k]            * (1.0f - balRangeL);

  1245.                             fAudioOutBuffers[i][k] += fAudioOutBuffers[i+1][k] * (1.0f - balRangeR);

  1246.                         }

  1247.                         else

  1248.                         {

  1249.                             // right

  1250.                             fAudioOutBuffers[i][k]  = fAudioOutBuffers[i][k] * balRangeR;

  1251.                             fAudioOutBuffers[i][k] += oldBufLeft[k]          * balRangeL;

  1252.                         }

  1253.                     }

  1254.                 }

  1255. 

  1256.                 // Volume (and buffer copy)

  1257.                 {

  1258.                     for (uint32_t k=0; k < frames; ++k)

  1259.                         audioOut[i][k+timeOffset] = fAudioOutBuffers[i][k] * pData->postProc.volume;

  1260.                 }

  1261.             }

  1262. 

  1263.         } // End of Post-processing

  1264. 

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

  1266.         // Save latency values for next callback

  1267. 

  1268.         if (const uint32_t latframes = pData->latency.frames)

  1269.         {

  1270.             CARLA_SAFE_ASSERT(timeOffset == 0);

  1271. 

  1272.             if (latframes <= frames)

  1273.             {

  1274.                 for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1275.                     carla_copyFloats(pData->latency.buffers[i], audioIn[i]+(frames-latframes), latframes);

  1276.             }

  1277.             else

  1278.             {

  1279.                 const uint32_t diff = pData->latency.frames-frames;

  1280. 

  1281.                 for (uint32_t i=0, k; i<pData->audioIn.count; ++i)

  1282.                 {

  1283.                     // push back buffer by 'frames'

  1284.                     for (k=0; k < diff; ++k)

  1285.                         pData->latency.buffers[i][k] = pData->latency.buffers[i][k+frames];

  1286. 

  1287.                     // put current input at the end

  1288.                     for (uint32_t j=0; k < latframes; ++j, ++k)

  1289.                         pData->latency.buffers[i][k] = audioIn[i][j];

  1290.                 }

  1291.             }

  1292.         }

  1293. 

  1294. #else // BUILD_BRIDGE

  1295.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1296.         {

  1297.             for (uint32_t k=0; k < frames; ++k)

  1298.                 audioOut[i][k+timeOffset] = fAudioOutBuffers[i][k];

  1299.         }

  1300. #endif

  1301. 

  1302.         // --------------------------------------------------------------------------------------------------------

  1303. 

  1304.         pData->singleMutex.unlock();

  1305.         return true;

  1306.     }

  1307. 

  1308.     void bufferSizeChanged(const uint32_t newBufferSize) override

  1309.     {

  1310.         CARLA_ASSERT_INT(newBufferSize > 0, newBufferSize);

  1311.         carla_debug("CarlaPluginLADSPA::bufferSizeChanged(%i) - start", newBufferSize);

  1312. 

  1313.         for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1314.         {

  1315.             if (fAudioInBuffers[i] != nullptr)

  1316.                 delete[] fAudioInBuffers[i];

  1317. 

  1318.             fAudioInBuffers[i] = new float[newBufferSize];

  1319.             carla_zeroFloats(fAudioInBuffers[i], newBufferSize);

  1320.         }

  1321. 

  1322.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1323.         {

  1324.             if (fAudioOutBuffers[i] != nullptr)

  1325.                 delete[] fAudioOutBuffers[i];

  1326. 

  1327.             fAudioOutBuffers[i] = new float[newBufferSize];

  1328.             carla_zeroFloats(fAudioOutBuffers[i], newBufferSize);

  1329.         }

  1330. 

  1331.         if (fExtraStereoBuffer[0] != nullptr)

  1332.         {

  1333.             delete[] fExtraStereoBuffer[0];

  1334.             fExtraStereoBuffer[0] = nullptr;

  1335.         }

  1336. 

  1337.         if (fExtraStereoBuffer[1] != nullptr)

  1338.         {

  1339.             delete[] fExtraStereoBuffer[1];

  1340.             fExtraStereoBuffer[1] = nullptr;

  1341.         }

  1342. 

  1343.         if (fForcedStereoIn && pData->audioOut.count == 2)

  1344.         {

  1345.             fExtraStereoBuffer[0] = new float[newBufferSize];

  1346.             fExtraStereoBuffer[1] = new float[newBufferSize];

  1347.             carla_zeroFloats(fExtraStereoBuffer[0], newBufferSize);

  1348.             carla_zeroFloats(fExtraStereoBuffer[1], newBufferSize);

  1349.         }

  1350. 

  1351.         reconnectAudioPorts();

  1352. 

  1353.         carla_debug("CarlaPluginLADSPA::bufferSizeChanged(%i) - end", newBufferSize);

  1354.     }

  1355. 

  1356.     void sampleRateChanged(const double newSampleRate) override

  1357.     {

  1358.         CARLA_ASSERT_INT(newSampleRate > 0.0, newSampleRate);

  1359.         carla_stdout("CarlaPluginLADSPA::sampleRateChanged(%g) - start", newSampleRate);

  1360. 

  1361.         if (pData->active)

  1362.             deactivate();

  1363. 

  1364.         const std::size_t instanceCount(fHandles.count());

  1365. 

  1366.         if (fDescriptor->cleanup != nullptr)

  1367.         {

  1368.             for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin2(); it.valid(); it.next())

  1369.             {

  1370.                 LADSPA_Handle const handle(it.getValue(nullptr));

  1371.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  1372. 

  1373.                 try {

  1374.                     fDescriptor->cleanup(handle);

  1375.                 } CARLA_SAFE_EXCEPTION("LADSPA cleanup");

  1376.             }

  1377.         }

  1378. 

  1379.         fHandles.clear();

  1380. 

  1381.         for (std::size_t i=0; i<instanceCount; ++i)

  1382.             addInstance();

  1383. 

  1384.         reconnectAudioPorts();

  1385. 

  1386.         if (pData->active)

  1387.             activate();

  1388. 

  1389.         carla_stdout("CarlaPluginLADSPA::sampleRateChanged(%g) - end", newSampleRate);

  1390.     }

  1391. 

  1392.     void reconnectAudioPorts() const noexcept

  1393.     {

  1394.         if (fForcedStereoIn)

  1395.         {

  1396.             if (LADSPA_Handle const handle = fHandles.getFirst(nullptr))

  1397.             {

  1398.                 try {

  1399.                     fDescriptor->connect_port(handle, pData->audioIn.ports[0].rindex, fAudioInBuffers[0]);

  1400.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port (forced stereo input, first)");

  1401.             }

  1402. 

  1403.             if (LADSPA_Handle const handle = fHandles.getLast(nullptr))

  1404.             {

  1405.                 try {

  1406.                     fDescriptor->connect_port(handle, pData->audioIn.ports[1].rindex, fAudioInBuffers[1]);

  1407.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port (forced stereo input, last)");

  1408.             }

  1409.         }

  1410.         else

  1411.         {

  1412.             for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin2(); it.valid(); it.next())

  1413.             {

  1414.                 LADSPA_Handle const handle(it.getValue(nullptr));

  1415.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  1416. 

  1417.                 for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1418.                 {

  1419.                     try {

  1420.                         fDescriptor->connect_port(handle, pData->audioIn.ports[i].rindex, fAudioInBuffers[i]);

  1421.                     } CARLA_SAFE_EXCEPTION("LADSPA connect_port (audio input)");

  1422.                 }

  1423.             }

  1424.         }

  1425. 

  1426.         if (fForcedStereoOut)

  1427.         {

  1428.             if (LADSPA_Handle const handle = fHandles.getFirst(nullptr))

  1429.             {

  1430.                 try {

  1431.                     fDescriptor->connect_port(handle, pData->audioOut.ports[0].rindex, fAudioOutBuffers[0]);

  1432.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port (forced stereo output, first)");

  1433.             }

  1434. 

  1435.             if (LADSPA_Handle const handle = fHandles.getLast(nullptr))

  1436.             {

  1437.                 try {

  1438.                     fDescriptor->connect_port(handle, pData->audioOut.ports[1].rindex, fAudioOutBuffers[1]);

  1439.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port (forced stereo output, last)");

  1440.             }

  1441.         }

  1442.         else

  1443.         {

  1444.             for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin2(); it.valid(); it.next())

  1445.             {

  1446.                 LADSPA_Handle const handle(it.getValue(nullptr));

  1447.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  1448. 

  1449.                 for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1450.                 {

  1451.                     try {

  1452.                         fDescriptor->connect_port(handle, pData->audioOut.ports[i].rindex, fAudioOutBuffers[i]);

  1453.                     } CARLA_SAFE_EXCEPTION("LADSPA connect_port (audio output)");

  1454.                 }

  1455.             }

  1456.         }

  1457.     }

  1458. 

  1459.     // -------------------------------------------------------------------

  1460.     // Plugin buffers

  1461. 

  1462.     void clearBuffers() noexcept override

  1463.     {

  1464.         carla_debug("CarlaPluginLADSPA::clearBuffers() - start");

  1465. 

  1466.         if (fAudioInBuffers != nullptr)

  1467.         {

  1468.             for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1469.             {

  1470.                 if (fAudioInBuffers[i] != nullptr)

  1471.                 {

  1472.                     delete[] fAudioInBuffers[i];

  1473.                     fAudioInBuffers[i] = nullptr;

  1474.                 }

  1475.             }

  1476. 

  1477.             delete[] fAudioInBuffers;

  1478.             fAudioInBuffers = nullptr;

  1479.         }

  1480. 

  1481.         if (fAudioOutBuffers != nullptr)

  1482.         {

  1483.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1484.             {

  1485.                 if (fAudioOutBuffers[i] != nullptr)

  1486.                 {

  1487.                     delete[] fAudioOutBuffers[i];

  1488.                     fAudioOutBuffers[i] = nullptr;

  1489.                 }

  1490.             }

  1491. 

  1492.             delete[] fAudioOutBuffers;

  1493.             fAudioOutBuffers = nullptr;

  1494.         }

  1495. 

  1496.         if (fExtraStereoBuffer[0] != nullptr)

  1497.         {

  1498.             delete[] fExtraStereoBuffer[0];

  1499.             fExtraStereoBuffer[0] = nullptr;

  1500.         }

  1501. 

  1502.         if (fExtraStereoBuffer[1] != nullptr)

  1503.         {

  1504.             delete[] fExtraStereoBuffer[1];

  1505.             fExtraStereoBuffer[1] = nullptr;

  1506.         }

  1507. 

  1508.         if (fParamBuffers != nullptr)

  1509.         {

  1510.             delete[] fParamBuffers;

  1511.             fParamBuffers = nullptr;

  1512.         }

  1513. 

  1514.         CarlaPlugin::clearBuffers();

  1515. 

  1516.         carla_debug("CarlaPluginLADSPA::clearBuffers() - end");

  1517.     }

  1518. 

  1519.     // -------------------------------------------------------------------

  1520. 

  1521.     const void* getNativeDescriptor() const noexcept override

  1522.     {

  1523.         return fDescriptor;

  1524.     }

  1525. 

  1526.     const void* getExtraStuff() const noexcept override

  1527.     {

  1528.         return fRdfDescriptor;

  1529.     }

  1530. 

  1531.     // -------------------------------------------------------------------

  1532. 

  1533.     bool init(const char* const filename, const char* name, const char* const label, const uint options,

  1534.               const LADSPA_RDF_Descriptor* const rdfDescriptor)

  1535.     {

  1536.         CARLA_SAFE_ASSERT_RETURN(pData->engine != nullptr, false);

  1537. 

  1538.         // ---------------------------------------------------------------

  1539.         // first checks

  1540. 

  1541.         if (pData->client != nullptr)

  1542.         {

  1543.             pData->engine->setLastError("Plugin client is already registered");

  1544.             return false;

  1545.         }

  1546. 

  1547.         if (filename == nullptr || filename[0] == '\0')

  1548.         {

  1549.             pData->engine->setLastError("null filename");

  1550.             return false;

  1551.         }

  1552. 

  1553.         // ---------------------------------------------------------------

  1554.         // open DLL

  1555. 

  1556.         if (! pData->libOpen(filename))

  1557.         {

  1558.             pData->engine->setLastError(pData->libError(filename));

  1559.             return false;

  1560.         }

  1561. 

  1562.         // ---------------------------------------------------------------

  1563.         // get DLL main entry

  1564. 

  1565.         const LADSPA_Descriptor_Function descFn = pData->libSymbol<LADSPA_Descriptor_Function>("ladspa_descriptor");

  1566. 

  1567.         if (descFn == nullptr)

  1568.         {

  1569.             pData->engine->setLastError("Could not find the LASDPA Descriptor in the plugin library");

  1570.             return false;

  1571.         }

  1572. 

  1573.         // ---------------------------------------------------------------

  1574.         // get descriptor that matches label

  1575. 

  1576.         // if label is null, get first valid plugin

  1577.         const bool nullLabel = (label == nullptr || label[0] == '\0');

  1578. 

  1579.         for (ulong d=0;; ++d)

  1580.         {

  1581.             try {

  1582.                 fDescriptor = descFn(d);

  1583.             }

  1584.             catch(...) {

  1585.                 carla_stderr2("Caught exception when trying to get LADSPA descriptor");

  1586.                 fDescriptor = nullptr;

  1587.                 break;

  1588.             }

  1589. 

  1590.             if (fDescriptor == nullptr)

  1591.                 break;

  1592. 

  1593.             if (fDescriptor->Label == nullptr || fDescriptor->Label[0] == '\0')

  1594.             {

  1595.                 carla_stderr2("WARNING - Got an invalid label, will not use this plugin");

  1596.                 fDescriptor = nullptr;

  1597.                 break;

  1598.             }

  1599.             if (fDescriptor->run == nullptr)

  1600.             {

  1601.                 carla_stderr2("WARNING - Plugin has no run, cannot use it");

  1602.                 fDescriptor = nullptr;

  1603.                 break;

  1604.             }

  1605. 

  1606.             if (nullLabel || std::strcmp(fDescriptor->Label, label) == 0)

  1607.                 break;

  1608.         }

  1609. 

  1610.         if (fDescriptor == nullptr)

  1611.         {

  1612.             pData->engine->setLastError("Could not find the requested plugin label in the plugin library");

  1613.             return false;

  1614.         }

  1615. 

  1616.         // ---------------------------------------------------------------

  1617.         // check for fixed buffer size requirement

  1618. 

  1619.         fNeedsFixedBuffers = CarlaString(filename).contains("dssi-vst", true);

  1620. 

  1621.         if (fNeedsFixedBuffers && ! pData->engine->usesConstantBufferSize())

  1622.         {

  1623.             pData->engine->setLastError("Cannot use this plugin under the current engine.\n"

  1624.                                         "The plugin requires a fixed block size which is not possible right now.");

  1625.             return false;

  1626.         }

  1627. 

  1628.         // ---------------------------------------------------------------

  1629.         // get info

  1630. 

  1631.         if (is_ladspa_rdf_descriptor_valid(rdfDescriptor, fDescriptor))

  1632.             fRdfDescriptor = ladspa_rdf_dup(rdfDescriptor);

  1633. 

  1634.         if (name == nullptr || name[0] == '\0')

  1635.         {

  1636.             /**/ if (fRdfDescriptor != nullptr && fRdfDescriptor->Title != nullptr && fRdfDescriptor->Title[0] != '\0')

  1637.                 name = fRdfDescriptor->Title;

  1638.             else if (fDescriptor->Name != nullptr && fDescriptor->Name[0] != '\0')

  1639.                 name = fDescriptor->Name;

  1640.             else

  1641.                 name = fDescriptor->Label;

  1642.         }

  1643. 

  1644.         pData->name = pData->engine->getUniquePluginName(name);

  1645.         pData->filename = carla_strdup(filename);

  1646. 

  1647.         // ---------------------------------------------------------------

  1648.         // register client

  1649. 

  1650.         pData->client = pData->engine->addClient(this);

  1651. 

  1652.         if (pData->client == nullptr || ! pData->client->isOk())

  1653.         {

  1654.             pData->engine->setLastError("Failed to register plugin client");

  1655.             return false;

  1656.         }

  1657. 

  1658.         // ---------------------------------------------------------------

  1659.         // initialize plugin

  1660. 

  1661.         if (! addInstance())

  1662.             return false;

  1663. 

  1664.         // ---------------------------------------------------------------

  1665.         // find latency port index

  1666. 

  1667.         for (uint32_t i=0, iCtrl=0, count=getSafePortCount(); i<count; ++i)

  1668.         {

  1669.             const int portType(fDescriptor->PortDescriptors[i]);

  1670. 

  1671.             if (! LADSPA_IS_PORT_CONTROL(portType))

  1672.                 continue;

  1673. 

  1674.             const uint32_t index(iCtrl++);

  1675. 

  1676.             if (! LADSPA_IS_PORT_OUTPUT(portType))

  1677.                 continue;

  1678. 

  1679.             const char* const portName(fDescriptor->PortNames[i]);

  1680.             CARLA_SAFE_ASSERT_BREAK(portName != nullptr);

  1681. 

  1682.             if (std::strcmp(portName, "latency")  == 0 ||

  1683.                 std::strcmp(portName, "_latency") == 0)

  1684.             {

  1685.                 fLatencyIndex = static_cast<int32_t>(index);

  1686.                 break;

  1687.             }

  1688.         }

  1689. 

  1690.         // ---------------------------------------------------------------

  1691.         // set default options

  1692. 

  1693.         pData->options = 0x0;

  1694. 

  1695.         /**/ if (fLatencyIndex >= 0 || fNeedsFixedBuffers)

  1696.             pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;

  1697.          else if (options & PLUGIN_OPTION_FIXED_BUFFERS)

  1698.             pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;

  1699. 

  1700.         /**/ if (pData->engine->getOptions().forceStereo)

  1701.             pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  1702.          else if (options & PLUGIN_OPTION_FORCE_STEREO)

  1703.             pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  1704. 

  1705.         return true;

  1706.     }

  1707. 

  1708.     // -------------------------------------------------------------------

  1709. 

  1710. private:

  1711.     LinkedList<LADSPA_Handle>    fHandles;

  1712.     const LADSPA_Descriptor*     fDescriptor;

  1713.     const LADSPA_RDF_Descriptor* fRdfDescriptor;

  1714. 

  1715.     float** fAudioInBuffers;

  1716.     float** fAudioOutBuffers;

  1717.     float*  fExtraStereoBuffer[2]; // used only if forcedStereoIn and audioOut == 2

  1718.     float*  fParamBuffers;

  1719. 

  1720.     int32_t fLatencyIndex; // -1 if invalid

  1721.     bool    fForcedStereoIn;

  1722.     bool    fForcedStereoOut;

  1723.     bool    fNeedsFixedBuffers;

  1724. 

  1725.     // -------------------------------------------------------------------

  1726. 

  1727.     bool addInstance()

  1728.     {

  1729.         LADSPA_Handle handle;

  1730. 

  1731.         try {

  1732.             handle = fDescriptor->instantiate(fDescriptor, static_cast<ulong>(pData->engine->getSampleRate()));

  1733.         } CARLA_SAFE_EXCEPTION_RETURN_ERR("LADSPA instantiate", "Plugin failed to initialize");

  1734. 

  1735.         for (uint32_t i=0, count=pData->param.count; i<count; ++i)

  1736.         {

  1737.             const int32_t rindex(pData->param.data[i].rindex);

  1738.             CARLA_SAFE_ASSERT_CONTINUE(rindex >= 0);

  1739. 

  1740.             try {

  1741.                 fDescriptor->connect_port(handle, static_cast<ulong>(rindex), &fParamBuffers[i]);

  1742.             } CARLA_SAFE_EXCEPTION("LADSPA connect_port");

  1743.         }

  1744. 

  1745.         if (fHandles.append(handle))

  1746.             return true;

  1747. 

  1748.         try {

  1749.             fDescriptor->cleanup(handle);

  1750.         } CARLA_SAFE_EXCEPTION("LADSPA cleanup");

  1751. 

  1752.         pData->engine->setLastError("Out of memory");

  1753.         return false;

  1754.     }

  1755. 

  1756.     uint32_t getSafePortCount() const noexcept

  1757.     {

  1758.         if (fDescriptor->PortCount == 0)

  1759.             return 0;

  1760. 

  1761.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->PortDescriptors != nullptr, 0);

  1762.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->PortRangeHints != nullptr, 0);

  1763.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->PortNames != nullptr, 0);

  1764. 

  1765.         return static_cast<uint32_t>(fDescriptor->PortCount);

  1766.     }

  1767. 

  1768.     bool getSeparatedParameterNameOrUnit(const char* const paramName, char* const strBuf, const bool wantName) const noexcept

  1769.     {

  1770.         if (_getSeparatedParameterNameOrUnitImpl(paramName, strBuf, wantName, true))

  1771.             return true;

  1772.         if (_getSeparatedParameterNameOrUnitImpl(paramName, strBuf, wantName, false))

  1773.             return true;

  1774.         return false;

  1775.     }

  1776. 

  1777.     static bool _getSeparatedParameterNameOrUnitImpl(const char* const paramName, char* const strBuf,

  1778.                                                      const bool wantName, const bool useBracket) noexcept

  1779.     {

  1780.         const char* const sepBracketStart(std::strstr(paramName, useBracket ? " [" : " ("));

  1781. 

  1782.         if (sepBracketStart == nullptr)

  1783.             return false;

  1784. 

  1785.         const char* const sepBracketEnd(std::strstr(sepBracketStart, useBracket ? "]" : ")"));

  1786. 

  1787.         if (sepBracketEnd == nullptr)

  1788.             return false;

  1789. 

  1790.         const std::size_t unitSize(static_cast<std::size_t>(sepBracketEnd-sepBracketStart-2));

  1791. 

  1792.         if (unitSize > 7) // very unlikely to have such big unit

  1793.             return false;

  1794. 

  1795.         const std::size_t sepIndex(std::strlen(paramName)-unitSize-3);

  1796. 

  1797.         // just in case

  1798.         if (sepIndex+2 >= STR_MAX)

  1799.             return false;

  1800. 

  1801.         if (wantName)

  1802.         {

  1803.             std::strncpy(strBuf, paramName, sepIndex);

  1804.             strBuf[sepIndex] = '\0';

  1805.         }

  1806.         else

  1807.         {

  1808.             std::strncpy(strBuf, paramName+(sepIndex+2), unitSize);

  1809.             strBuf[unitSize] = '\0';

  1810.         }

  1811. 

  1812.         return true;

  1813.     }

  1814. 

  1815.     // -------------------------------------------------------------------

  1816. 

  1817.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CarlaPluginLADSPA)

  1818. };

  1819. 

  1820. // -------------------------------------------------------------------------------------------------------------------

  1821. 

  1822. CarlaPlugin* CarlaPlugin::newLADSPA(const Initializer& init, const LADSPA_RDF_Descriptor* const rdfDescriptor)

  1823. {

  1824.     carla_debug("CarlaPlugin::newLADSPA({%p, \"%s\", \"%s\", \"%s\", " P_INT64 ", %x}, %p)",

  1825.                 init.engine, init.filename, init.name, init.label, init.uniqueId, init.options, rdfDescriptor);

  1826. 

  1827.     CarlaPluginLADSPA* const plugin(new CarlaPluginLADSPA(init.engine, init.id));

  1828. 

  1829.     if (! plugin->init(init.filename, init.name, init.label, init.options, rdfDescriptor))

  1830.     {

  1831.         delete plugin;

  1832.         return nullptr;

  1833.     }

  1834. 

  1835.     return plugin;

  1836. }

  1837. 

  1838. // -------------------------------------------------------------------------------------------------------------------

  1839. 

  1840. CARLA_BACKEND_END_NAMESPACE