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Carla/source/backend/plugin/CarlaPluginLADSPA.cpp

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  1. /*

  2.  * Carla LADSPA Plugin

  3.  * Copyright (C) 2011-2014 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.           fIsDssiVst(false),

  42.           fForcedStereoIn(false),

  43.           fForcedStereoOut(false),

  44.           leakDetector_CarlaPluginLADSPA()

  45.     {

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

  47. 

  48.         carla_zeroPointers(fExtraStereoBuffer, 2);

  49.     }

  50. 

  51.     ~CarlaPluginLADSPA() noexcept override

  52.     {

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

  54. 

  55.         pData->singleMutex.lock();

  56.         pData->masterMutex.lock();

  57. 

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

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

  60. 

  61.         if (pData->active)

  62.         {

  63.             deactivate();

  64.             pData->active = false;

  65.         }

  66. 

  67.         if (fDescriptor != nullptr)

  68.         {

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

  70.             {

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

  72.                 {

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

  74.                     CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  75. 

  76.                     try {

  77.                         fDescriptor->cleanup(handle);

  78.                     } CARLA_SAFE_EXCEPTION("LADSPA cleanup");

  79.                 }

  80.             }

  81. 

  82.             fHandles.clear();

  83.             fDescriptor = nullptr;

  84.         }

  85. 

  86.         if (fRdfDescriptor != nullptr)

  87.         {

  88.             delete fRdfDescriptor;

  89.             fRdfDescriptor = nullptr;

  90.         }

  91. 

  92.         clearBuffers();

  93.     }

  94. 

  95.     // -------------------------------------------------------------------

  96.     // Information (base)

  97. 

  98.     PluginType getType() const noexcept override

  99.     {

  100.         return PLUGIN_LADSPA;

  101.     }

  102. 

  103.     PluginCategory getCategory() const noexcept override

  104.     {

  105.         if (fRdfDescriptor != nullptr)

  106.         {

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

  108. 

  109.             // Specific Types

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

  111.                 return PLUGIN_CATEGORY_DELAY;

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

  113.                 return PLUGIN_CATEGORY_MODULATOR;

  114.             if (category & (LADSPA_PLUGIN_AMPLIFIER))

  115.                 return PLUGIN_CATEGORY_DYNAMICS;

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

  117.                 return PLUGIN_CATEGORY_UTILITY;

  118. 

  119.             // Pre-set LADSPA Types

  120.             if (LADSPA_IS_PLUGIN_DYNAMICS(category))

  121.                 return PLUGIN_CATEGORY_DYNAMICS;

  122.             if (LADSPA_IS_PLUGIN_AMPLITUDE(category))

  123.                 return PLUGIN_CATEGORY_MODULATOR;

  124.             if (LADSPA_IS_PLUGIN_EQ(category))

  125.                 return PLUGIN_CATEGORY_EQ;

  126.             if (LADSPA_IS_PLUGIN_FILTER(category))

  127.                 return PLUGIN_CATEGORY_FILTER;

  128.             if (LADSPA_IS_PLUGIN_FREQUENCY(category))

  129.                 return PLUGIN_CATEGORY_UTILITY;

  130.             if (LADSPA_IS_PLUGIN_SIMULATOR(category))

  131.                 return PLUGIN_CATEGORY_OTHER;

  132.             if (LADSPA_IS_PLUGIN_TIME(category))

  133.                 return PLUGIN_CATEGORY_DELAY;

  134.             if (LADSPA_IS_PLUGIN_GENERATOR(category))

  135.                 return PLUGIN_CATEGORY_SYNTH;

  136.         }

  137. 

  138.         return CarlaPlugin::getCategory();

  139.     }

  140. 

  141.     int64_t getUniqueId() const noexcept override

  142.     {

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

  144. 

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

  146.     }

  147. 

  148.     uint32_t getLatencyInFrames() const noexcept override

  149.     {

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

  151.             return 0;

  152. 

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

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

  155. 

  156.         return static_cast<uint32_t>(latency);

  157.     }

  158. 

  159.     // -------------------------------------------------------------------

  160.     // Information (count)

  161. 

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

  163.     {

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

  165. 

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

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

  168. 

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

  170.         {

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

  172.             return static_cast<uint32_t>(port->ScalePointCount);

  173.         }

  174. 

  175.         return 0;

  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.         if (! fIsDssiVst)

  191.         {

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

  193.             if (fLatencyIndex == -1)

  194.                 options |= PLUGIN_OPTION_FIXED_BUFFERS;

  195. 

  196.             // can't disable forced stereo if in rack mode

  197.             if (pData->engine->getProccessMode() == ENGINE_PROCESS_MODE_CONTINUOUS_RACK)

  198.                 pass();

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

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

  201.                 options |= PLUGIN_OPTION_FORCE_STEREO;

  202.         }

  203. 

  204.         return options;

  205.     }

  206. 

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

  208.     {

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

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

  211. 

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

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

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

  215. 

  216.         // not output, should be fine

  217.         return fParamBuffers[parameterId];

  218.     }

  219. 

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

  221.     {

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

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

  224. 

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

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

  227. 

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

  229.         {

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

  231.             CARLA_SAFE_ASSERT_RETURN(scalePointId < port->ScalePointCount, 0.0f);

  232. 

  233.             const LADSPA_RDF_ScalePoint* const scalePoint(&port->ScalePoints[scalePointId]);

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

  235.         }

  236. 

  237.         return 0.0f;

  238.     }

  239. 

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

  241.     {

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

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

  244. 

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

  246.     }

  247. 

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

  249.     {

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

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

  252. 

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

  254.         {

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

  256.             return;

  257.         }

  258. 

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

  260.     }

  261. 

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

  263.     {

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

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

  266. 

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

  268.     }

  269. 

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

  271.     {

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

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

  274. 

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

  276.         {

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

  278.             return;

  279.         }

  280. 

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

  282.     }

  283. 

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

  285.     {

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

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

  288. 

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

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

  291. 

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

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

  294. 

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

  296.             return;

  297. 

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

  299.     }

  300. 

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

  302.     {

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

  304. 

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

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

  307. 

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

  309.         {

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

  311. 

  312.             if (LADSPA_PORT_HAS_LABEL(port->Hints))

  313.             {

  314.                 CARLA_SAFE_ASSERT_RETURN(port->Label != nullptr, nullStrBuf(strBuf));

  315. 

  316.                 std::strncpy(strBuf, port->Label, STR_MAX);

  317.                 return;

  318.             }

  319.         }

  320. 

  321.         nullStrBuf(strBuf);

  322.     }

  323. 

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

  325.     {

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

  327. 

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

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

  330. 

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

  332.         {

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

  334. 

  335.             if (LADSPA_PORT_HAS_UNIT(port->Hints))

  336.             {

  337.                 switch (port->Unit)

  338.                 {

  339.                 case LADSPA_UNIT_DB:

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

  341.                     return;

  342.                 case LADSPA_UNIT_COEF:

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

  344.                     return;

  345.                 case LADSPA_UNIT_HZ:

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

  347.                     return;

  348.                 case LADSPA_UNIT_S:

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

  350.                     return;

  351.                 case LADSPA_UNIT_MS:

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

  353.                     return;

  354.                 case LADSPA_UNIT_MIN:

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

  356.                     return;

  357.                 }

  358.             }

  359.         }

  360. 

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

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

  363. 

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

  365.             return;

  366. 

  367.         nullStrBuf(strBuf);

  368.     }

  369. 

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

  371.     {

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

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

  374. 

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

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

  377. 

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

  379.         {

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

  381.             CARLA_SAFE_ASSERT_RETURN(scalePointId < port->ScalePointCount, nullStrBuf(strBuf));

  382. 

  383.             const LADSPA_RDF_ScalePoint* const scalePoint(&port->ScalePoints[scalePointId]);

  384.             CARLA_SAFE_ASSERT_RETURN(scalePoint->Label != nullptr,         nullStrBuf(strBuf));

  385. 

  386.             std::strncpy(strBuf, scalePoint->Label, STR_MAX);

  387.             return;

  388.         }

  389. 

  390.         nullStrBuf(strBuf);

  391.     }

  392. 

  393.     // -------------------------------------------------------------------

  394.     // Set data (state)

  395. 

  396.     // nothing

  397. 

  398.     // -------------------------------------------------------------------

  399.     // Set data (internal stuff)

  400. 

  401.     // nothing

  402. 

  403.     // -------------------------------------------------------------------

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

  405. 

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

  407.     {

  408.         CARLA_SAFE_ASSERT_RETURN(fParamBuffers != nullptr,);

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

  410. 

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

  412.         fParamBuffers[parameterId] = fixedValue;

  413. 

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

  415.     }

  416. 

  417.     // -------------------------------------------------------------------

  418.     // Misc

  419. 

  420.     // nothing

  421. 

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

  423.     // Plugin state

  424. 

  425.     void reload() override

  426.     {

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

  428.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

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

  430. 

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

  432. 

  433.         // Safely disable plugin for reload

  434.         const ScopedDisabler sd(this);

  435. 

  436.         if (pData->active)

  437.             deactivate();

  438. 

  439.         clearBuffers();

  440. 

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

  442.         const uint32_t portCount(getSafePortCount());

  443. 

  444.         uint32_t aIns, aOuts, params;

  445.         aIns = aOuts = params = 0;

  446. 

  447.         bool forcedStereoIn, forcedStereoOut;

  448.         forcedStereoIn = forcedStereoOut = false;

  449. 

  450.         bool needsCtrlIn, needsCtrlOut;

  451.         needsCtrlIn = needsCtrlOut = false;

  452. 

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

  454.         {

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

  456. 

  457.             if (LADSPA_IS_PORT_AUDIO(portType))

  458.             {

  459.                 if (LADSPA_IS_PORT_INPUT(portType))

  460.                     aIns += 1;

  461.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  462.                     aOuts += 1;

  463.             }

  464.             else if (LADSPA_IS_PORT_CONTROL(portType))

  465.                 params += 1;

  466.         }

  467. 

  468.         if (pData->options & PLUGIN_OPTION_FORCE_STEREO)

  469.         {

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

  471.             {

  472.                 if (aIns == 1)

  473.                 {

  474.                     aIns = 2;

  475.                     forcedStereoIn = true;

  476.                 }

  477.                 if (aOuts == 1)

  478.                 {

  479.                     aOuts = 2;

  480.                     forcedStereoOut = true;

  481.                 }

  482.             }

  483.         }

  484. 

  485.         if (aIns > 0)

  486.         {

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

  488.             fAudioInBuffers = new float*[aIns];

  489. 

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

  491.                 fAudioInBuffers[i] = nullptr;

  492.         }

  493. 

  494.         if (aOuts > 0)

  495.         {

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

  497.             fAudioOutBuffers = new float*[aOuts];

  498.             needsCtrlIn = true;

  499. 

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

  501.                 fAudioOutBuffers[i] = nullptr;

  502.         }

  503. 

  504.         if (params > 0)

  505.         {

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

  507. 

  508.             fParamBuffers = new float[params];

  509.             FloatVectorOperations::clear(fParamBuffers, static_cast<int>(params));

  510.         }

  511. 

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

  513.         CarlaString portName;

  514. 

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

  516.         {

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

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

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

  520. 

  521.             if (LADSPA_IS_PORT_AUDIO(portType))

  522.             {

  523.                 portName.clear();

  524. 

  525.                 if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  526.                 {

  527.                     portName  = pData->name;

  528.                     portName += ":";

  529.                 }

  530. 

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

  532.                 {

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

  534.                 }

  535.                 else

  536.                 {

  537.                     if (LADSPA_IS_PORT_INPUT(portType))

  538.                     {

  539.                         if (aIns > 1)

  540.                         {

  541.                             portName += "audio-in_";

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

  543.                         }

  544.                         else

  545.                             portName += "audio-in";

  546.                     }

  547.                     else

  548.                     {

  549.                         if (aOuts > 1)

  550.                         {

  551.                             portName += "audio-out_";

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

  553.                         }

  554.                         else

  555.                             portName += "audio-out";

  556.                     }

  557.                 }

  558. 

  559.                 portName.truncate(portNameSize);

  560. 

  561.                 if (LADSPA_IS_PORT_INPUT(portType))

  562.                 {

  563.                     const uint32_t j = iAudioIn++;

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

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

  566. 

  567.                     if (forcedStereoIn)

  568.                     {

  569.                         portName += "_2";

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

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

  572.                     }

  573.                 }

  574.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  575.                 {

  576.                     const uint32_t j = iAudioOut++;

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

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

  579. 

  580.                     if (forcedStereoOut)

  581.                     {

  582.                         portName += "_2";

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

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

  585.                     }

  586.                 }

  587.                 else

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

  589.             }

  590.             else if (LADSPA_IS_PORT_CONTROL(portType))

  591.             {

  592.                 const uint32_t j = iCtrl++;

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

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

  595. 

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

  597. 

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

  599. 

  600.                 // min value

  601.                 if (LADSPA_IS_HINT_BOUNDED_BELOW(portRangeHints.HintDescriptor))

  602.                     min = portRangeHints.LowerBound;

  603.                 else

  604.                     min = 0.0f;

  605. 

  606.                 // max value

  607.                 if (LADSPA_IS_HINT_BOUNDED_ABOVE(portRangeHints.HintDescriptor))

  608.                     max = portRangeHints.UpperBound;

  609.                 else

  610.                     max = 1.0f;

  611. 

  612.                 if (min > max)

  613.                 {

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

  615.                     min = max - 0.1f;

  616.                 }

  617.                 else if (carla_compareFloats(min, max))

  618.                 {

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

  620.                     max = min + 0.1f;

  621.                 }

  622. 

  623.                 // default value

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

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

  626.                 else

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

  628. 

  629.                 if (def < min)

  630.                     def = min;

  631.                 else if (def > max)

  632.                     def = max;

  633. 

  634.                 if (LADSPA_IS_HINT_SAMPLE_RATE(portRangeHints.HintDescriptor))

  635.                 {

  636.                     min *= sampleRate;

  637.                     max *= sampleRate;

  638.                     def *= sampleRate;

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

  640.                 }

  641. 

  642.                 if (LADSPA_IS_HINT_TOGGLED(portRangeHints.HintDescriptor))

  643.                 {

  644.                     step = max - min;

  645.                     stepSmall = step;

  646.                     stepLarge = step;

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

  648.                 }

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

  650.                 {

  651.                     step = 1.0f;

  652.                     stepSmall = 1.0f;

  653.                     stepLarge = 10.0f;

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

  655.                 }

  656.                 else

  657.                 {

  658.                     const float range = max - min;

  659.                     step = range/100.0f;

  660.                     stepSmall = range/1000.0f;

  661.                     stepLarge = range/10.0f;

  662.                 }

  663. 

  664.                 if (LADSPA_IS_PORT_INPUT(portType))

  665.                 {

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

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

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

  669.                     needsCtrlIn = true;

  670.                 }

  671.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  672.                 {

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

  674. 

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

  676.                     {

  677.                         min = 0.0f;

  678.                         max = sampleRate;

  679.                         def = 0.0f;

  680.                         step = 1.0f;

  681.                         stepSmall = 1.0f;

  682.                         stepLarge = 1.0f;

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

  684.                         CARLA_SAFE_ASSERT(fLatencyIndex == static_cast<int32_t>(j));

  685.                     }

  686.                     else

  687.                     {

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

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

  690.                         needsCtrlOut = true;

  691.                     }

  692.                 }

  693.                 else

  694.                 {

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

  696.                 }

  697. 

  698.                 // extra parameter hints

  699.                 if (LADSPA_IS_HINT_LOGARITHMIC(portRangeHints.HintDescriptor))

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

  701. 

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

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

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

  705. 

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

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

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

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

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

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

  712. 

  713.                 // Start parameters in their default values

  714.                 fParamBuffers[j] = def;

  715. 

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

  717.                 {

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

  719.                     CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  720. 

  721.                     try {

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

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

  724.                 }

  725.             }

  726.             else

  727.             {

  728.                 // Not Audio or Control

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

  730. 

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

  732.                 {

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

  734.                     CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  735. 

  736.                     try {

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

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

  739.                 }

  740.             }

  741.         }

  742. 

  743.         if (needsCtrlIn)

  744.         {

  745.             portName.clear();

  746. 

  747.             if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  748.             {

  749.                 portName  = pData->name;

  750.                 portName += ":";

  751.             }

  752. 

  753.             portName += "events-in";

  754.             portName.truncate(portNameSize);

  755. 

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

  757.         }

  758. 

  759.         if (needsCtrlOut)

  760.         {

  761.             portName.clear();

  762. 

  763.             if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  764.             {

  765.                 portName  = pData->name;

  766.                 portName += ":";

  767.             }

  768. 

  769.             portName += "events-out";

  770.             portName.truncate(portNameSize);

  771. 

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

  773.         }

  774. 

  775.         if (forcedStereoIn || forcedStereoOut)

  776.             pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  777.         else

  778.             pData->options &= ~PLUGIN_OPTION_FORCE_STEREO;

  779. 

  780.         // plugin hints

  781.         pData->hints = 0x0;

  782. 

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

  784.             pData->hints |= PLUGIN_IS_RTSAFE;

  785. 

  786. #ifndef BUILD_BRIDGE

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

  788.             pData->hints |= PLUGIN_CAN_DRYWET;

  789. 

  790.         if (aOuts > 0)

  791.             pData->hints |= PLUGIN_CAN_VOLUME;

  792. 

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

  794.             pData->hints |= PLUGIN_CAN_BALANCE;

  795. #endif

  796. 

  797.         // extra plugin hints

  798.         pData->extraHints  = 0x0;

  799.         pData->extraHints |= PLUGIN_EXTRA_HINT_CAN_RUN_RACK;

  800. 

  801.         // check initial latency

  802.         findInitialLatencyValue(aIns, aOuts);

  803. 

  804.         fForcedStereoIn  = forcedStereoIn;

  805.         fForcedStereoOut = forcedStereoOut;

  806. 

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

  808. 

  809.         if (pData->active)

  810.             activate();

  811. 

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

  813.     }

  814. 

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

  816.     {

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

  818.             return;

  819. 

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

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

  822.         CARLA_SAFE_ASSERT_RETURN(handle != nullptr,);

  823. 

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

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

  826. 

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

  828.         {

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

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

  831. 

  832.             try {

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

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

  835.         }

  836. 

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

  838.         {

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

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

  841. 

  842.             try {

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

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

  845.         }

  846. 

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

  848.         {

  849.             try {

  850.                 fDescriptor->activate(handle);

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

  852.         }

  853. 

  854.         try {

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

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

  857. 

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

  859.         {

  860.             try {

  861.                 fDescriptor->deactivate(handle);

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

  863.         }

  864. 

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

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

  867.         {

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

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

  870.         }

  871.     }

  872. 

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

  874.     // Plugin processing

  875. 

  876.     void activate() noexcept override

  877.     {

  878.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  879. 

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

  881.         {

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

  883.             {

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

  885.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  886. 

  887.                 try {

  888.                     fDescriptor->activate(handle);

  889.                 } CARLA_SAFE_EXCEPTION("LADSPA activate");

  890.             }

  891.         }

  892.     }

  893. 

  894.     void deactivate() noexcept override

  895.     {

  896.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  897. 

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

  899.         {

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

  901.             {

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

  903.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  904. 

  905.                 try {

  906.                     fDescriptor->deactivate(handle);

  907.                 } CARLA_SAFE_EXCEPTION("LADSPA deactivate");

  908.             }

  909.         }

  910.     }

  911. 

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

  913.     {

  914.         // --------------------------------------------------------------------------------------------------------

  915.         // Check if active

  916. 

  917.         if (! pData->active)

  918.         {

  919.             // disable any output sound

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

  921.                 FloatVectorOperations::clear(audioOut[i], static_cast<int>(frames));

  922.             return;

  923.         }

  924. 

  925.         // --------------------------------------------------------------------------------------------------------

  926.         // Event Input and Processing

  927. 

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

  929.         {

  930.             // ----------------------------------------------------------------------------------------------------

  931.             // Event Input (System)

  932. 

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

  934. 

  935.             uint32_t numEvents  = pData->event.portIn->getEventCount();

  936.             uint32_t timeOffset = 0;

  937. 

  938.             for (uint32_t i=0; i < numEvents; ++i)

  939.             {

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

  941. 

  942.                 if (event.time >= frames)

  943.                     continue;

  944. 

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

  946. 

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

  948.                 {

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

  950.                         timeOffset = event.time;

  951.                 }

  952. 

  953.                 switch (event.type)

  954.                 {

  955.                 case kEngineEventTypeNull:

  956.                     break;

  957. 

  958.                 case kEngineEventTypeControl: {

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

  960. 

  961.                     switch (ctrlEvent.type)

  962.                     {

  963.                     case kEngineControlEventTypeNull:

  964.                         break;

  965. 

  966.                     case kEngineControlEventTypeParameter: {

  967. #ifndef BUILD_BRIDGE

  968.                         // Control backend stuff

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

  970.                         {

  971.                             float value;

  972. 

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

  974.                             {

  975.                                 value = ctrlEvent.value;

  976.                                 setDryWet(value, false, false);

  977.                                 pData->postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_DRYWET, 0, value);

  978.                                 break;

  979.                             }

  980. 

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

  982.                             {

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

  984.                                 setVolume(value, false, false);

  985.                                 pData->postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_VOLUME, 0, value);

  986.                                 break;

  987.                             }

  988. 

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

  990.                             {

  991.                                 float left, right;

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

  993. 

  994.                                 if (value < 0.0f)

  995.                                 {

  996.                                     left  = -1.0f;

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

  998.                                 }

  999.                                 else if (value > 0.0f)

  1000.                                 {

  1001.                                     left  = (value*2.0f)-1.0f;

  1002.                                     right = 1.0f;

  1003.                                 }

  1004.                                 else

  1005.                                 {

  1006.                                     left  = -1.0f;

  1007.                                     right = 1.0f;

  1008.                                 }

  1009. 

  1010.                                 setBalanceLeft(left, false, false);

  1011.                                 setBalanceRight(right, false, false);

  1012.                                 pData->postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_BALANCE_LEFT, 0, left);

  1013.                                 pData->postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_BALANCE_RIGHT, 0, right);

  1014.                                 break;

  1015.                             }

  1016.                         }

  1017. #endif

  1018.                         // Control plugin parameters

  1019.                         for (uint32_t k=0; k < pData->param.count; ++k)

  1020.                         {

  1021.                             if (pData->param.data[k].midiChannel != event.channel)

  1022.                                 continue;

  1023.                             if (pData->param.data[k].midiCC != ctrlEvent.param)

  1024.                                 continue;

  1025.                             if (pData->param.data[k].type != PARAMETER_INPUT)

  1026.                                 continue;

  1027.                             if ((pData->param.data[k].hints & PARAMETER_IS_AUTOMABLE) == 0)

  1028.                                 continue;

  1029. 

  1030.                             float value;

  1031. 

  1032.                             if (pData->param.data[k].hints & PARAMETER_IS_BOOLEAN)

  1033.                             {

  1034.                                 value = (ctrlEvent.value < 0.5f) ? pData->param.ranges[k].min : pData->param.ranges[k].max;

  1035.                             }

  1036.                             else

  1037.                             {

  1038.                                 value = pData->param.ranges[k].getUnnormalizedValue(ctrlEvent.value);

  1039. 

  1040.                                 if (pData->param.data[k].hints & PARAMETER_IS_INTEGER)

  1041.                                     value = std::rint(value);

  1042.                             }

  1043. 

  1044.                             setParameterValue(k, value, false, false, false);

  1045.                             pData->postponeRtEvent(kPluginPostRtEventParameterChange, static_cast<int32_t>(k), 0, value);

  1046.                             break;

  1047.                         }

  1048.                         break;

  1049.                     } // case kEngineControlEventTypeParameter

  1050. 

  1051.                     case kEngineControlEventTypeMidiBank:

  1052.                     case kEngineControlEventTypeMidiProgram:

  1053.                     case kEngineControlEventTypeAllSoundOff:

  1054.                     case kEngineControlEventTypeAllNotesOff:

  1055.                         break;

  1056.                     } // switch (ctrlEvent.type)

  1057.                     break;

  1058.                 } // case kEngineEventTypeControl

  1059. 

  1060.                 case kEngineEventTypeMidi:

  1061.                     break;

  1062.                 } // switch (event.type)

  1063.             }

  1064. 

  1065.             pData->postRtEvents.trySplice();

  1066. 

  1067.             if (frames > timeOffset)

  1068.                 processSingle(audioIn, audioOut, frames - timeOffset, timeOffset);

  1069. 

  1070.         } // End of Event Input and Processing

  1071. 

  1072.         // --------------------------------------------------------------------------------------------------------

  1073.         // Plugin processing (no events)

  1074. 

  1075.         else

  1076.         {

  1077.             processSingle(audioIn, audioOut, frames, 0);

  1078. 

  1079.         } // End of Plugin processing (no events)

  1080. 

  1081.         // --------------------------------------------------------------------------------------------------------

  1082.         // Control Output

  1083. 

  1084.         if (pData->event.portOut != nullptr)

  1085.         {

  1086.             uint8_t  channel;

  1087.             uint16_t param;

  1088.             float    value;

  1089. 

  1090.             for (uint32_t k=0; k < pData->param.count; ++k)

  1091.             {

  1092.                 if (pData->param.data[k].type != PARAMETER_OUTPUT)

  1093.                     continue;

  1094. 

  1095.                 pData->param.ranges[k].fixValue(fParamBuffers[k]);

  1096. 

  1097.                 if (pData->param.data[k].midiCC > 0)

  1098.                 {

  1099.                     channel = pData->param.data[k].midiChannel;

  1100.                     param   = static_cast<uint16_t>(pData->param.data[k].midiCC);

  1101.                     value   = pData->param.ranges[k].getNormalizedValue(fParamBuffers[k]);

  1102.                     pData->event.portOut->writeControlEvent(0, channel, kEngineControlEventTypeParameter, param, value);

  1103.                 }

  1104.             }

  1105.         } // End of Control Output

  1106.     }

  1107. 

  1108.     bool processSingle(const float** const audioIn, float** const audioOut, const uint32_t frames, const uint32_t timeOffset)

  1109.     {

  1110.         CARLA_SAFE_ASSERT_RETURN(frames > 0, false);

  1111. 

  1112.         if (pData->audioIn.count > 0)

  1113.         {

  1114.             CARLA_SAFE_ASSERT_RETURN(audioIn != nullptr, false);

  1115.         }

  1116.         if (pData->audioOut.count > 0)

  1117.         {

  1118.             CARLA_SAFE_ASSERT_RETURN(audioOut != nullptr, false);

  1119.         }

  1120. 

  1121.         // --------------------------------------------------------------------------------------------------------

  1122.         // Try lock, silence otherwise

  1123. 

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

  1125.         {

  1126.             pData->singleMutex.lock();

  1127.         }

  1128.         else if (! pData->singleMutex.tryLock())

  1129.         {

  1130.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1131.             {

  1132.                 for (uint32_t k=0; k < frames; ++k)

  1133.                     audioOut[i][k+timeOffset] = 0.0f;

  1134.             }

  1135. 

  1136.             return false;

  1137.         }

  1138. 

  1139.         const int iframes(static_cast<int>(frames));

  1140. 

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

  1142.         // Handle needsReset

  1143. 

  1144.         if (pData->needsReset)

  1145.         {

  1146.             if (pData->latency.frames > 0)

  1147.             {

  1148.                 for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1149.                     FloatVectorOperations::clear(pData->latency.buffers[i], static_cast<int>(pData->latency.frames));

  1150.             }

  1151. 

  1152.             pData->needsReset = false;

  1153.         }

  1154. 

  1155.         // --------------------------------------------------------------------------------------------------------

  1156.         // Set audio buffers

  1157. 

  1158.         const bool customMonoOut   = pData->audioOut.count == 2 && fForcedStereoOut && ! fForcedStereoIn;

  1159.         const bool customStereoOut = pData->audioOut.count == 2 && fForcedStereoIn  && ! fForcedStereoOut;

  1160. 

  1161.         if (! customMonoOut)

  1162.         {

  1163.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1164.                 FloatVectorOperations::clear(fAudioOutBuffers[i], iframes);

  1165.         }

  1166. 

  1167.         for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1168.             FloatVectorOperations::copy(fAudioInBuffers[i], audioIn[i]+timeOffset, iframes);

  1169. 

  1170.         // --------------------------------------------------------------------------------------------------------

  1171.         // Run plugin

  1172. 

  1173.         uint instn = 0;

  1174.         for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin(); it.valid(); it.next(), ++instn)

  1175.         {

  1176.             LADSPA_Handle const handle(it.getValue(nullptr));

  1177.             CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  1178. 

  1179.             // ----------------------------------------------------------------------------------------------------

  1180.             // Mixdown for forced stereo

  1181. 

  1182.             if (customMonoOut)

  1183.                 FloatVectorOperations::clear(fAudioOutBuffers[instn], iframes);

  1184. 

  1185.             // ----------------------------------------------------------------------------------------------------

  1186.             // Run it

  1187. 

  1188.             try {

  1189.                 fDescriptor->run(handle, frames);

  1190.             } CARLA_SAFE_EXCEPTION("LADSPA run");

  1191. 

  1192.             // ----------------------------------------------------------------------------------------------------

  1193.             // Mixdown for forced stereo

  1194. 

  1195.             if (customMonoOut)

  1196.                 FloatVectorOperations::multiply(fAudioOutBuffers[instn], 0.5f, iframes);

  1197.             else if (customStereoOut)

  1198.                 FloatVectorOperations::copy(fExtraStereoBuffer[instn], fAudioOutBuffers[instn], iframes);

  1199.         }

  1200. 

  1201.         if (customStereoOut)

  1202.         {

  1203.             FloatVectorOperations::copy(fAudioOutBuffers[0], fExtraStereoBuffer[0], iframes);

  1204.             FloatVectorOperations::copy(fAudioOutBuffers[1], fExtraStereoBuffer[1], iframes);

  1205.         }

  1206. 

  1207. #ifndef BUILD_BRIDGE

  1208.         // --------------------------------------------------------------------------------------------------------

  1209.         // Post-processing (dry/wet, volume and balance)

  1210. 

  1211.         {

  1212.             const bool doDryWet  = (pData->hints & PLUGIN_CAN_DRYWET) != 0 && ! carla_compareFloats(pData->postProc.dryWet, 1.0f);

  1213.             const bool doBalance = (pData->hints & PLUGIN_CAN_BALANCE) != 0 && ! (carla_compareFloats(pData->postProc.balanceLeft, -1.0f) && carla_compareFloats(pData->postProc.balanceRight, 1.0f));

  1214.             const bool isMono    = (pData->audioIn.count == 1);

  1215. 

  1216.             bool isPair;

  1217.             float bufValue, oldBufLeft[doBalance ? frames : 1];

  1218. 

  1219.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1220.             {

  1221.                 // Dry/Wet

  1222.                 if (doDryWet)

  1223.                 {

  1224.                     const uint32_t c = isMono ? 0 : i;

  1225. 

  1226.                     for (uint32_t k=0; k < frames; ++k)

  1227.                     {

  1228.                         if (k < pData->latency.frames)

  1229.                             bufValue = pData->latency.buffers[c][k];

  1230.                         else if (pData->latency.frames < frames)

  1231.                             bufValue = fAudioInBuffers[c][k-pData->latency.frames];

  1232.                         else

  1233.                             bufValue = fAudioInBuffers[c][k];

  1234. 

  1235.                         fAudioOutBuffers[i][k] = (fAudioOutBuffers[i][k] * pData->postProc.dryWet) + (bufValue * (1.0f - pData->postProc.dryWet));

  1236.                     }

  1237.                 }

  1238. 

  1239.                 // Balance

  1240.                 if (doBalance)

  1241.                 {

  1242.                     isPair = (i % 2 == 0);

  1243. 

  1244.                     if (isPair)

  1245.                     {

  1246.                         CARLA_ASSERT(i+1 < pData->audioOut.count);

  1247.                         FloatVectorOperations::copy(oldBufLeft, fAudioOutBuffers[i], iframes);

  1248.                     }

  1249. 

  1250.                     float balRangeL = (pData->postProc.balanceLeft  + 1.0f)/2.0f;

  1251.                     float balRangeR = (pData->postProc.balanceRight + 1.0f)/2.0f;

  1252. 

  1253.                     for (uint32_t k=0; k < frames; ++k)

  1254.                     {

  1255.                         if (isPair)

  1256.                         {

  1257.                             // left

  1258.                             fAudioOutBuffers[i][k]  = oldBufLeft[k]            * (1.0f - balRangeL);

  1259.                             fAudioOutBuffers[i][k] += fAudioOutBuffers[i+1][k] * (1.0f - balRangeR);

  1260.                         }

  1261.                         else

  1262.                         {

  1263.                             // right

  1264.                             fAudioOutBuffers[i][k]  = fAudioOutBuffers[i][k] * balRangeR;

  1265.                             fAudioOutBuffers[i][k] += oldBufLeft[k]          * balRangeL;

  1266.                         }

  1267.                     }

  1268.                 }

  1269. 

  1270.                 // Volume (and buffer copy)

  1271.                 {

  1272.                     for (uint32_t k=0; k < frames; ++k)

  1273.                         audioOut[i][k+timeOffset] = fAudioOutBuffers[i][k] * pData->postProc.volume;

  1274.                 }

  1275.             }

  1276. 

  1277.         } // End of Post-processing

  1278. 

  1279. #else // BUILD_BRIDGE

  1280.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1281.         {

  1282.             for (uint32_t k=0; k < frames; ++k)

  1283.                 audioOut[i][k+timeOffset] = fAudioOutBuffers[i][k];

  1284.         }

  1285. #endif

  1286. 

  1287.         // --------------------------------------------------------------------------------------------------------

  1288.         // Save latency values for next callback

  1289. 

  1290.         if (const uint32_t latframes = pData->latency.frames)

  1291.         {

  1292.             CARLA_SAFE_ASSERT(timeOffset == 0);

  1293. 

  1294.             if (latframes <= frames)

  1295.             {

  1296.                 for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1297.                     FloatVectorOperations::copy(pData->latency.buffers[i], audioIn[i]+(frames-latframes), static_cast<int>(latframes));

  1298.             }

  1299.             else

  1300.             {

  1301.                 const uint32_t diff = pData->latency.frames-frames;

  1302. 

  1303.                 for (uint32_t i=0, k; i<pData->audioIn.count; ++i)

  1304.                 {

  1305.                     // push back buffer by 'frames'

  1306.                     for (k=0; k < diff; ++k)

  1307.                         pData->latency.buffers[i][k] = pData->latency.buffers[i][k+frames];

  1308. 

  1309.                     // put current input at the end

  1310.                     for (uint32_t j=0; k < latframes; ++j, ++k)

  1311.                         pData->latency.buffers[i][k] = audioIn[i][j];

  1312.                 }

  1313.             }

  1314.         }

  1315. 

  1316.         // --------------------------------------------------------------------------------------------------------

  1317. 

  1318.         pData->singleMutex.unlock();

  1319.         return true;

  1320.     }

  1321. 

  1322.     void bufferSizeChanged(const uint32_t newBufferSize) override

  1323.     {

  1324.         CARLA_ASSERT_INT(newBufferSize > 0, newBufferSize);

  1325.         carla_debug("CarlaPluginLADSPA::bufferSizeChanged(%i) - start", newBufferSize);

  1326. 

  1327.         const int iBufferSize(static_cast<int>(newBufferSize));

  1328. 

  1329.         for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1330.         {

  1331.             if (fAudioInBuffers[i] != nullptr)

  1332.                 delete[] fAudioInBuffers[i];

  1333. 

  1334.             fAudioInBuffers[i] = new float[newBufferSize];

  1335.             FloatVectorOperations::clear(fAudioInBuffers[i], iBufferSize);

  1336.         }

  1337. 

  1338.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1339.         {

  1340.             if (fAudioOutBuffers[i] != nullptr)

  1341.                 delete[] fAudioOutBuffers[i];

  1342. 

  1343.             fAudioOutBuffers[i] = new float[newBufferSize];

  1344.             FloatVectorOperations::clear(fAudioOutBuffers[i], iBufferSize);

  1345.         }

  1346. 

  1347.         if (fExtraStereoBuffer[0] != nullptr)

  1348.         {

  1349.             delete[] fExtraStereoBuffer[0];

  1350.             fExtraStereoBuffer[0] = nullptr;

  1351.         }

  1352. 

  1353.         if (fExtraStereoBuffer[1] != nullptr)

  1354.         {

  1355.             delete[] fExtraStereoBuffer[1];

  1356.             fExtraStereoBuffer[1] = nullptr;

  1357.         }

  1358. 

  1359.         if (fForcedStereoIn && pData->audioOut.count == 2)

  1360.         {

  1361.             fExtraStereoBuffer[0] = new float[newBufferSize];

  1362.             fExtraStereoBuffer[1] = new float[newBufferSize];

  1363.             FloatVectorOperations::clear(fExtraStereoBuffer[0], iBufferSize);

  1364.             FloatVectorOperations::clear(fExtraStereoBuffer[1], iBufferSize);

  1365.         }

  1366. 

  1367.         reconnectAudioPorts();

  1368. 

  1369.         carla_debug("CarlaPluginLADSPA::bufferSizeChanged(%i) - end", newBufferSize);

  1370.     }

  1371. 

  1372.     void sampleRateChanged(const double newSampleRate) override

  1373.     {

  1374.         CARLA_ASSERT_INT(newSampleRate > 0.0, newSampleRate);

  1375.         carla_stdout("CarlaPluginLADSPA::sampleRateChanged(%g) - start", newSampleRate);

  1376. 

  1377.         if (pData->active)

  1378.             deactivate();

  1379. 

  1380.         const std::size_t instanceCount(fHandles.count());

  1381. 

  1382.         if (fDescriptor->cleanup == nullptr)

  1383.         {

  1384.             for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin(); it.valid(); it.next())

  1385.             {

  1386.                 LADSPA_Handle const handle(it.getValue(nullptr));

  1387.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  1388. 

  1389.                 try {

  1390.                     fDescriptor->cleanup(handle);

  1391.                 } CARLA_SAFE_EXCEPTION("LADSPA cleanup");

  1392.             }

  1393.         }

  1394. 

  1395.         fHandles.clear();

  1396. 

  1397.         for (std::size_t i=0; i<instanceCount; ++i)

  1398.             addInstance();

  1399. 

  1400.         reconnectAudioPorts();

  1401. 

  1402.         if (pData->active)

  1403.             activate();

  1404. 

  1405.         carla_stdout("CarlaPluginLADSPA::sampleRateChanged(%g) - end", newSampleRate);

  1406.     }

  1407. 

  1408.     void reconnectAudioPorts() const noexcept

  1409.     {

  1410.         if (fForcedStereoIn)

  1411.         {

  1412.             if (LADSPA_Handle const handle = fHandles.getAt(0, nullptr))

  1413.             {

  1414.                 try {

  1415.                     fDescriptor->connect_port(handle, pData->audioIn.ports[0].rindex, fAudioInBuffers[0]);

  1416.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port (forced stereo input)");

  1417.             }

  1418. 

  1419.             if (LADSPA_Handle const handle = fHandles.getAt(1, nullptr))

  1420.             {

  1421.                 try {

  1422.                     fDescriptor->connect_port(handle, pData->audioIn.ports[1].rindex, fAudioInBuffers[1]);

  1423.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port (forced stereo input)");

  1424.             }

  1425.         }

  1426.         else

  1427.         {

  1428.             for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin(); it.valid(); it.next())

  1429.             {

  1430.                 LADSPA_Handle const handle(it.getValue(nullptr));

  1431.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  1432. 

  1433.                 for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1434.                 {

  1435.                     try {

  1436.                         fDescriptor->connect_port(handle, pData->audioIn.ports[i].rindex, fAudioInBuffers[i]);

  1437.                     } CARLA_SAFE_EXCEPTION("LADSPA connect_port (audio input)");

  1438.                 }

  1439.             }

  1440.         }

  1441. 

  1442.         if (fForcedStereoOut)

  1443.         {

  1444.             if (LADSPA_Handle const handle = fHandles.getAt(0, nullptr))

  1445.             {

  1446.                 try {

  1447.                     fDescriptor->connect_port(handle, pData->audioOut.ports[0].rindex, fAudioOutBuffers[0]);

  1448.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port (forced stereo output)");

  1449.             }

  1450. 

  1451.             if (LADSPA_Handle const handle = fHandles.getAt(1, nullptr))

  1452.             {

  1453.                 try {

  1454.                     fDescriptor->connect_port(handle, pData->audioOut.ports[1].rindex, fAudioOutBuffers[1]);

  1455.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port (forced stereo output)");

  1456.             }

  1457.         }

  1458.         else

  1459.         {

  1460.             for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin(); it.valid(); it.next())

  1461.             {

  1462.                 LADSPA_Handle const handle(it.getValue(nullptr));

  1463.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  1464. 

  1465.                 for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1466.                 {

  1467.                     try {

  1468.                         fDescriptor->connect_port(handle, pData->audioOut.ports[i].rindex, fAudioOutBuffers[i]);

  1469.                     } CARLA_SAFE_EXCEPTION("LADSPA connect_port (audio output)");

  1470.                 }

  1471.             }

  1472.         }

  1473.     }

  1474. 

  1475.     // -------------------------------------------------------------------

  1476.     // Plugin buffers

  1477. 

  1478.     void clearBuffers() noexcept override

  1479.     {

  1480.         carla_debug("CarlaPluginLADSPA::clearBuffers() - start");

  1481. 

  1482.         if (fAudioInBuffers != nullptr)

  1483.         {

  1484.             for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1485.             {

  1486.                 if (fAudioInBuffers[i] != nullptr)

  1487.                 {

  1488.                     delete[] fAudioInBuffers[i];

  1489.                     fAudioInBuffers[i] = nullptr;

  1490.                 }

  1491.             }

  1492. 

  1493.             delete[] fAudioInBuffers;

  1494.             fAudioInBuffers = nullptr;

  1495.         }

  1496. 

  1497.         if (fAudioOutBuffers != nullptr)

  1498.         {

  1499.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1500.             {

  1501.                 if (fAudioOutBuffers[i] != nullptr)

  1502.                 {

  1503.                     delete[] fAudioOutBuffers[i];

  1504.                     fAudioOutBuffers[i] = nullptr;

  1505.                 }

  1506.             }

  1507. 

  1508.             delete[] fAudioOutBuffers;

  1509.             fAudioOutBuffers = nullptr;

  1510.         }

  1511. 

  1512.         if (fExtraStereoBuffer[0] != nullptr)

  1513.         {

  1514.             delete[] fExtraStereoBuffer[0];

  1515.             fExtraStereoBuffer[0] = nullptr;

  1516.         }

  1517. 

  1518.         if (fExtraStereoBuffer[1] != nullptr)

  1519.         {

  1520.             delete[] fExtraStereoBuffer[1];

  1521.             fExtraStereoBuffer[1] = nullptr;

  1522.         }

  1523. 

  1524.         if (fParamBuffers != nullptr)

  1525.         {

  1526.             delete[] fParamBuffers;

  1527.             fParamBuffers = nullptr;

  1528.         }

  1529. 

  1530.         CarlaPlugin::clearBuffers();

  1531. 

  1532.         carla_debug("CarlaPluginLADSPA::clearBuffers() - end");

  1533.     }

  1534. 

  1535.     // -------------------------------------------------------------------

  1536. 

  1537.     void* getNativeHandle() const noexcept override

  1538.     {

  1539.         return nullptr; // fHandle;

  1540.     }

  1541. 

  1542.     const void* getNativeDescriptor() const noexcept override

  1543.     {

  1544.         return fDescriptor;

  1545.     }

  1546. 

  1547.     const void* getExtraStuff() const noexcept override

  1548.     {

  1549.         return fRdfDescriptor;

  1550.     }

  1551. 

  1552.     // -------------------------------------------------------------------

  1553. 

  1554.     bool init(const char* const filename, const char* const name, const char* const label, const uint options,

  1555.               const LADSPA_RDF_Descriptor* const rdfDescriptor)

  1556.     {

  1557.         CARLA_SAFE_ASSERT_RETURN(pData->engine != nullptr, false);

  1558. 

  1559.         // ---------------------------------------------------------------

  1560.         // first checks

  1561. 

  1562.         if (pData->client != nullptr)

  1563.         {

  1564.             pData->engine->setLastError("Plugin client is already registered");

  1565.             return false;

  1566.         }

  1567. 

  1568.         if (filename == nullptr || filename[0] == '\0')

  1569.         {

  1570.             pData->engine->setLastError("null filename");

  1571.             return false;

  1572.         }

  1573. 

  1574.         if (label == nullptr || label[0] == '\0')

  1575.         {

  1576.             pData->engine->setLastError("null label");

  1577.             return false;

  1578.         }

  1579. 

  1580.         fIsDssiVst = CarlaString(filename).contains("dssi-vst", true);

  1581. 

  1582.         // ---------------------------------------------------------------

  1583.         // open DLL

  1584. 

  1585.         if (! pData->libOpen(filename))

  1586.         {

  1587.             pData->engine->setLastError(pData->libError(filename));

  1588.             return false;

  1589.         }

  1590. 

  1591.         // ---------------------------------------------------------------

  1592.         // get DLL main entry

  1593. 

  1594.         const LADSPA_Descriptor_Function descFn = pData->libSymbol<LADSPA_Descriptor_Function>("ladspa_descriptor");

  1595. 

  1596.         if (descFn == nullptr)

  1597.         {

  1598.             pData->engine->setLastError("Could not find the LASDPA Descriptor in the plugin library");

  1599.             return false;

  1600.         }

  1601. 

  1602.         // ---------------------------------------------------------------

  1603.         // get descriptor that matches label

  1604. 

  1605.         for (ulong d=0;; ++d)

  1606.         {

  1607.             try {

  1608.                 fDescriptor = descFn(d);

  1609.             }

  1610.             catch(...) {

  1611.                 carla_stderr2("Caught exception when trying to get LADSPA descriptor");

  1612.                 fDescriptor = nullptr;

  1613.                 break;

  1614.             }

  1615. 

  1616.             if (fDescriptor == nullptr)

  1617.                 break;

  1618. 

  1619.             if (fDescriptor->Label == nullptr || fDescriptor->Label[0] == '\0')

  1620.             {

  1621.                 carla_stderr2("WARNING - Got an invalid label, will not use this plugin");

  1622.                 fDescriptor = nullptr;

  1623.                 break;

  1624.             }

  1625.             if (fDescriptor->run == nullptr)

  1626.             {

  1627.                 carla_stderr2("WARNING - Plugin has no run, cannot use it");

  1628.                 fDescriptor = nullptr;

  1629.                 break;

  1630.             }

  1631. 

  1632.             if (std::strcmp(fDescriptor->Label, label) == 0)

  1633.                 break;

  1634.         }

  1635. 

  1636.         if (fDescriptor == nullptr)

  1637.         {

  1638.             pData->engine->setLastError("Could not find the requested plugin label in the plugin library");

  1639.             return false;

  1640.         }

  1641. 

  1642.         // ---------------------------------------------------------------

  1643.         // get info

  1644. 

  1645.         if (is_ladspa_rdf_descriptor_valid(rdfDescriptor, fDescriptor))

  1646.             fRdfDescriptor = ladspa_rdf_dup(rdfDescriptor);

  1647. 

  1648.         if (name != nullptr && name[0] != '\0')

  1649.             pData->name = pData->engine->getUniquePluginName(name);

  1650.         else if (fRdfDescriptor != nullptr && fRdfDescriptor->Title != nullptr && fRdfDescriptor->Title[0] != '\0')

  1651.             pData->name = pData->engine->getUniquePluginName(fRdfDescriptor->Title);

  1652.         else if (fDescriptor->Name != nullptr && fDescriptor->Name[0] != '\0')

  1653.             pData->name = pData->engine->getUniquePluginName(fDescriptor->Name);

  1654.         else

  1655.             pData->name = pData->engine->getUniquePluginName(fDescriptor->Label);

  1656. 

  1657.         pData->filename = carla_strdup(filename);

  1658. 

  1659.         // ---------------------------------------------------------------

  1660.         // register client

  1661. 

  1662.         pData->client = pData->engine->addClient(this);

  1663. 

  1664.         if (pData->client == nullptr || ! pData->client->isOk())

  1665.         {

  1666.             pData->engine->setLastError("Failed to register plugin client");

  1667.             return false;

  1668.         }

  1669. 

  1670.         // ---------------------------------------------------------------

  1671.         // initialize plugin

  1672. 

  1673.         if (! addInstance())

  1674.             return false;

  1675. 

  1676.         // ---------------------------------------------------------------

  1677.         // find latency port index

  1678. 

  1679.         for (uint32_t i=0, iCtrl=0, count=getSafePortCount(); i<count; ++i)

  1680.         {

  1681.             const int portType(fDescriptor->PortDescriptors[i]);

  1682. 

  1683.             if (! LADSPA_IS_PORT_CONTROL(portType))

  1684.                 continue;

  1685. 

  1686.             const uint32_t index(iCtrl++);

  1687. 

  1688.             if (! LADSPA_IS_PORT_OUTPUT(portType))

  1689.                 continue;

  1690. 

  1691.             const char* const portName(fDescriptor->PortNames[i]);

  1692.             CARLA_SAFE_ASSERT_BREAK(portName != nullptr);

  1693. 

  1694.             if (std::strcmp(portName, "latency")  == 0 ||

  1695.                 std::strcmp(portName, "_latency") == 0)

  1696.             {

  1697.                 fLatencyIndex = static_cast<int32_t>(index);

  1698.                 break;

  1699.             }

  1700.         }

  1701. 

  1702.         // ---------------------------------------------------------------

  1703.         // set default options

  1704. 

  1705.         pData->options = 0x0;

  1706. 

  1707.         /**/ if (fLatencyIndex >= 0 || fIsDssiVst)

  1708.             pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;

  1709.          else if (options & PLUGIN_OPTION_FIXED_BUFFERS)

  1710.             pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;

  1711. 

  1712.         /**/ if (pData->engine->getOptions().forceStereo)

  1713.             pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  1714.          else if (options & PLUGIN_OPTION_FORCE_STEREO)

  1715.             pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  1716. 

  1717.         return true;

  1718.     }

  1719. 

  1720.     // -------------------------------------------------------------------

  1721. 

  1722. private:

  1723.     LinkedList<LADSPA_Handle>    fHandles;

  1724.     const LADSPA_Descriptor*     fDescriptor;

  1725.     const LADSPA_RDF_Descriptor* fRdfDescriptor;

  1726. 

  1727.     float** fAudioInBuffers;

  1728.     float** fAudioOutBuffers;

  1729.     float*  fExtraStereoBuffer[2]; // used only if forcedStereoIn and audioOut == 2

  1730.     float*  fParamBuffers;

  1731. 

  1732.     int32_t fLatencyIndex; // -1 if invalid

  1733.     bool    fIsDssiVst;

  1734.     bool    fForcedStereoIn;

  1735.     bool    fForcedStereoOut;

  1736. 

  1737.     // -------------------------------------------------------------------

  1738. 

  1739.     bool addInstance()

  1740.     {

  1741.         LADSPA_Handle handle;

  1742. 

  1743.         try {

  1744.             handle = fDescriptor->instantiate(fDescriptor, static_cast<ulong>(pData->engine->getSampleRate()));

  1745.         } CARLA_SAFE_EXCEPTION_RETURN_ERR("LADSPA instantiate", "Plugin failed to initialize");

  1746. 

  1747.         for (uint32_t i=0, count=pData->param.count; i<count; ++i)

  1748.         {

  1749.             const int32_t rindex(pData->param.data[i].rindex);

  1750.             CARLA_SAFE_ASSERT_CONTINUE(rindex >= 0);

  1751. 

  1752.             try {

  1753.                 fDescriptor->connect_port(handle, static_cast<ulong>(rindex), &fParamBuffers[i]);

  1754.             } CARLA_SAFE_EXCEPTION("LADSPA connect_port");

  1755.         }

  1756. 

  1757.         if (fHandles.append(handle))

  1758.             return true;

  1759. 

  1760.         try {

  1761.             fDescriptor->cleanup(handle);

  1762.         } CARLA_SAFE_EXCEPTION("LADSPA cleanup");

  1763. 

  1764.         pData->engine->setLastError("Out of memory");

  1765.         return false;

  1766.     }

  1767. 

  1768.     uint32_t getSafePortCount() const noexcept

  1769.     {

  1770.         if (fDescriptor->PortCount == 0)

  1771.             return 0;

  1772. 

  1773.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->PortDescriptors != nullptr, 0);

  1774.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->PortRangeHints != nullptr, 0);

  1775.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->PortNames != nullptr, 0);

  1776. 

  1777.         return static_cast<uint32_t>(fDescriptor->PortCount);

  1778.     }

  1779. 

  1780.     bool getSeparatedParameterNameOrUnit(const char* const paramName, char* const strBuf, const bool wantName) const noexcept

  1781.     {

  1782.         if (_getSeparatedParameterNameOrUnitImpl(paramName, strBuf, wantName, true))

  1783.             return true;

  1784.         if (_getSeparatedParameterNameOrUnitImpl(paramName, strBuf, wantName, false))

  1785.             return true;

  1786.         return false;

  1787.     }

  1788. 

  1789.     static bool _getSeparatedParameterNameOrUnitImpl(const char* const paramName, char* const strBuf, const bool wantName, const bool useBracket) noexcept

  1790.     {

  1791.         const char* const sepBracketStart(std::strstr(paramName, useBracket ? " [" : " ("));

  1792. 

  1793.         if (sepBracketStart == nullptr)

  1794.             return false;

  1795. 

  1796.         const char* const sepBracketEnd(std::strstr(sepBracketStart, useBracket ? "]" : ")"));

  1797. 

  1798.         if (sepBracketEnd == nullptr)

  1799.             return false;

  1800. 

  1801.         const std::size_t unitSize(static_cast<std::size_t>(sepBracketEnd-sepBracketStart-2));

  1802. 

  1803.         if (unitSize > 7) // very unlikely to have such big unit

  1804.             return false;

  1805. 

  1806.         const std::size_t sepIndex(std::strlen(paramName)-unitSize-3);

  1807. 

  1808.         // just in case

  1809.         if (sepIndex >= STR_MAX)

  1810.             return false;

  1811. 

  1812.         if (wantName)

  1813.         {

  1814.             std::strncpy(strBuf, paramName, sepIndex);

  1815.             strBuf[sepIndex] = '\0';

  1816.         }

  1817.         else

  1818.         {

  1819.             std::strncpy(strBuf, paramName+(sepIndex+2), unitSize);

  1820.             strBuf[unitSize] = '\0';

  1821.         }

  1822. 

  1823.         return true;

  1824.     }

  1825. 

  1826.     // -------------------------------------------------------------------

  1827. 

  1828.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CarlaPluginLADSPA)

  1829. };

  1830. 

  1831. // -------------------------------------------------------------------------------------------------------------------

  1832. 

  1833. CarlaPlugin* CarlaPlugin::newLADSPA(const Initializer& init, const LADSPA_RDF_Descriptor* const rdfDescriptor)

  1834. {

  1835.     carla_debug("CarlaPlugin::newLADSPA({%p, \"%s\", \"%s\", \"%s\", " P_INT64 ", %x}, %p)", init.engine, init.filename, init.name, init.label, init.uniqueId, init.options, rdfDescriptor);

  1836. 

  1837.     CarlaPluginLADSPA* const plugin(new CarlaPluginLADSPA(init.engine, init.id));

  1838. 

  1839.     if (! plugin->init(init.filename, init.name, init.label, init.options, rdfDescriptor))

  1840.     {

  1841.         delete plugin;

  1842.         return nullptr;

  1843.     }

  1844. 

  1845.     plugin->reload();

  1846. 

  1847.     bool canRun = true;

  1848. 

  1849.     if (init.engine->getProccessMode() == ENGINE_PROCESS_MODE_CONTINUOUS_RACK)

  1850.     {

  1851.         if (! plugin->canRunInRack())

  1852.         {

  1853.             init.engine->setLastError("Carla's rack mode can only work with Mono or Stereo LADSPA plugins, sorry!");

  1854.             canRun = false;

  1855.         }

  1856.     }

  1857. 

  1858.     if (! canRun)

  1859.     {

  1860.         delete plugin;

  1861.         return nullptr;

  1862.     }

  1863. 

  1864.     return plugin;

  1865. }

  1866. 

  1867. // -------------------------------------------------------------------------------------------------------------------

  1868. 

  1869. CARLA_BACKEND_END_NAMESPACE