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Carla/source/backend/plugin/CarlaPluginLADSPA.cpp

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  1. /*

  2.  * Carla Plugin, LADSPA implementation

  3.  * Copyright (C) 2011-2016 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.         if (! fNeedsFixedBuffers)

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

  228. 

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

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

  231. 

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

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

  234.     }

  235. 

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

  237.     {

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

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

  240. 

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

  242.     }

  243. 

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

  245.     {

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

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

  248. 

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

  250.         {

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

  252.             return;

  253.         }

  254. 

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

  256.     }

  257. 

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

  259.     {

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

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

  262. 

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

  264.     }

  265. 

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

  267.     {

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

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

  270. 

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

  272.         {

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

  274.             return;

  275.         }

  276. 

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

  278.     }

  279. 

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

  281.     {

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

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

  284. 

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

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

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

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

  289. 

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

  291.             return;

  292. 

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

  294.     }

  295. 

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

  297.     {

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

  299. 

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

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

  302. 

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

  304.         {

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

  306. 

  307.             if (LADSPA_PORT_HAS_UNIT(port.Hints))

  308.             {

  309.                 switch (port.Unit)

  310.                 {

  311.                 case LADSPA_UNIT_DB:

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

  313.                     return;

  314.                 case LADSPA_UNIT_COEF:

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

  316.                     return;

  317.                 case LADSPA_UNIT_HZ:

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

  319.                     return;

  320.                 case LADSPA_UNIT_S:

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

  322.                     return;

  323.                 case LADSPA_UNIT_MS:

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

  325.                     return;

  326.                 case LADSPA_UNIT_MIN:

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

  328.                     return;

  329.                 }

  330.             }

  331.         }

  332. 

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

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

  335. 

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

  337.             return;

  338. 

  339.         nullStrBuf(strBuf);

  340.     }

  341. 

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

  343.     {

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

  345. 

  346.         if (fRdfDescriptor == nullptr)

  347.             return nullStrBuf(strBuf);

  348. 

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

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

  351. 

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

  353.             return nullStrBuf(strBuf);

  354. 

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

  356. 

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

  358.             return nullStrBuf(strBuf);

  359. 

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

  361. 

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

  363.     }

  364. 

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

  366.     {

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

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

  369. 

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

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

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

  373. 

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

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

  376. 

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

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

  379. 

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

  381.     }

  382. 

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

  384.     // Set data (state)

  385. 

  386.     // nothing

  387. 

  388.     // -------------------------------------------------------------------

  389.     // Set data (internal stuff)

  390. 

  391.     // nothing

  392. 

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

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

  395. 

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

  397.     {

  398.         CARLA_SAFE_ASSERT_RETURN(fParamBuffers != nullptr,);

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

  400. 

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

  402.         fParamBuffers[parameterId] = fixedValue;

  403. 

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

  405.     }

  406. 

  407.     // -------------------------------------------------------------------

  408.     // Misc

  409. 

  410.     // nothing

  411. 

  412.     // -------------------------------------------------------------------

  413.     // Plugin state

  414. 

  415.     void reload() override

  416.     {

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

  418.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

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

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

  421. 

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

  423. 

  424.         // Safely disable plugin for reload

  425.         const ScopedDisabler sd(this);

  426. 

  427.         if (pData->active)

  428.             deactivate();

  429. 

  430.         clearBuffers();

  431. 

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

  433.         const uint32_t portCount(getSafePortCount());

  434. 

  435.         uint32_t aIns, aOuts, params;

  436.         aIns = aOuts = params = 0;

  437. 

  438.         bool forcedStereoIn, forcedStereoOut;

  439.         forcedStereoIn = forcedStereoOut = false;

  440. 

  441.         bool needsCtrlIn, needsCtrlOut;

  442.         needsCtrlIn = needsCtrlOut = false;

  443. 

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

  445.         {

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

  447. 

  448.             if (LADSPA_IS_PORT_AUDIO(portType))

  449.             {

  450.                 if (LADSPA_IS_PORT_INPUT(portType))

  451.                     aIns += 1;

  452.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  453.                     aOuts += 1;

  454.             }

  455.             else if (LADSPA_IS_PORT_CONTROL(portType))

  456.                 params += 1;

  457.         }

  458. 

  459.         if (pData->options & PLUGIN_OPTION_FORCE_STEREO)

  460.         {

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

  462.             {

  463.                 if (aIns == 1)

  464.                 {

  465.                     aIns = 2;

  466.                     forcedStereoIn = true;

  467.                 }

  468.                 if (aOuts == 1)

  469.                 {

  470.                     aOuts = 2;

  471.                     forcedStereoOut = true;

  472.                 }

  473.             }

  474.         }

  475. 

  476.         if (aIns > 0)

  477.         {

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

  479.             fAudioInBuffers = new float*[aIns];

  480. 

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

  482.                 fAudioInBuffers[i] = nullptr;

  483.         }

  484. 

  485.         if (aOuts > 0)

  486.         {

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

  488.             fAudioOutBuffers = new float*[aOuts];

  489.             needsCtrlIn = true;

  490. 

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

  492.                 fAudioOutBuffers[i] = nullptr;

  493.         }

  494. 

  495.         if (params > 0)

  496.         {

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

  498. 

  499.             fParamBuffers = new float[params];

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

  501.         }

  502. 

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

  504.         CarlaString portName;

  505. 

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

  507.         {

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

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

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

  511. 

  512.             if (LADSPA_IS_PORT_AUDIO(portType))

  513.             {

  514.                 portName.clear();

  515. 

  516.                 if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  517.                 {

  518.                     portName  = pData->name;

  519.                     portName += ":";

  520.                 }

  521. 

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

  523.                 {

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

  525.                 }

  526.                 else

  527.                 {

  528.                     if (LADSPA_IS_PORT_INPUT(portType))

  529.                     {

  530.                         if (aIns > 1)

  531.                         {

  532.                             portName += "audio-in_";

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

  534.                         }

  535.                         else

  536.                             portName += "audio-in";

  537.                     }

  538.                     else

  539.                     {

  540.                         if (aOuts > 1)

  541.                         {

  542.                             portName += "audio-out_";

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

  544.                         }

  545.                         else

  546.                             portName += "audio-out";

  547.                     }

  548.                 }

  549. 

  550.                 portName.truncate(portNameSize);

  551. 

  552.                 if (LADSPA_IS_PORT_INPUT(portType))

  553.                 {

  554.                     const uint32_t j = iAudioIn++;

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

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

  557. 

  558.                     if (forcedStereoIn)

  559.                     {

  560.                         portName += "_2";

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

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

  563.                     }

  564.                 }

  565.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  566.                 {

  567.                     const uint32_t j = iAudioOut++;

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

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

  570. 

  571.                     if (forcedStereoOut)

  572.                     {

  573.                         portName += "_2";

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

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

  576.                     }

  577.                 }

  578.                 else

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

  580.             }

  581.             else if (LADSPA_IS_PORT_CONTROL(portType))

  582.             {

  583.                 const uint32_t j = iCtrl++;

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

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

  586. 

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

  588. 

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

  590. 

  591.                 // min value

  592.                 if (LADSPA_IS_HINT_BOUNDED_BELOW(portRangeHints.HintDescriptor))

  593.                     min = portRangeHints.LowerBound;

  594.                 else

  595.                     min = 0.0f;

  596. 

  597.                 // max value

  598.                 if (LADSPA_IS_HINT_BOUNDED_ABOVE(portRangeHints.HintDescriptor))

  599.                     max = portRangeHints.UpperBound;

  600.                 else

  601.                     max = 1.0f;

  602. 

  603.                 if (LADSPA_IS_HINT_SAMPLE_RATE(portRangeHints.HintDescriptor))

  604.                 {

  605.                     min *= sampleRate;

  606.                     max *= sampleRate;

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

  608.                 }

  609. 

  610.                 if (min >= max)

  611.                 {

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

  613.                     max = min + 0.1f;

  614.                 }

  615. 

  616.                 // default value

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

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

  619.                 else

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

  621. 

  622.                 if (def < min)

  623.                     def = min;

  624.                 else if (def > max)

  625.                     def = max;

  626. 

  627.                 if (LADSPA_IS_HINT_TOGGLED(portRangeHints.HintDescriptor))

  628.                 {

  629.                     step = max - min;

  630.                     stepSmall = step;

  631.                     stepLarge = step;

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

  633.                 }

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

  635.                 {

  636.                     step = 1.0f;

  637.                     stepSmall = 1.0f;

  638.                     stepLarge = 10.0f;

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

  640.                 }

  641.                 else

  642.                 {

  643.                     const float range = max - min;

  644.                     step = range/100.0f;

  645.                     stepSmall = range/1000.0f;

  646.                     stepLarge = range/10.0f;

  647.                 }

  648. 

  649.                 if (LADSPA_IS_PORT_INPUT(portType))

  650.                 {

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

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

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

  654.                     needsCtrlIn = true;

  655.                 }

  656.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  657.                 {

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

  659. 

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

  661.                     {

  662.                         min = 0.0f;

  663.                         max = sampleRate;

  664.                         def = 0.0f;

  665.                         step = 1.0f;

  666.                         stepSmall = 1.0f;

  667.                         stepLarge = 1.0f;

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

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

  670.                     }

  671.                     else

  672.                     {

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

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

  675.                         needsCtrlOut = true;

  676.                     }

  677.                 }

  678.                 else

  679.                 {

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

  681.                 }

  682. 

  683.                 // extra parameter hints

  684.                 if (LADSPA_IS_HINT_LOGARITHMIC(portRangeHints.HintDescriptor))

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

  686. 

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

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

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

  690. 

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

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

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

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

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

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

  697. 

  698.                 // Start parameters in their default values

  699.                 fParamBuffers[j] = def;

  700. 

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

  702.                 {

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

  704.                     CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  705. 

  706.                     try {

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

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

  709.                 }

  710.             }

  711.             else

  712.             {

  713.                 // Not Audio or Control

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

  715. 

  716.                 for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin2(); 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, nullptr);

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

  724.                 }

  725.             }

  726.         }

  727. 

  728.         if (needsCtrlIn)

  729.         {

  730.             portName.clear();

  731. 

  732.             if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  733.             {

  734.                 portName  = pData->name;

  735.                 portName += ":";

  736.             }

  737. 

  738.             portName += "events-in";

  739.             portName.truncate(portNameSize);

  740. 

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

  742.         }

  743. 

  744.         if (needsCtrlOut)

  745.         {

  746.             portName.clear();

  747. 

  748.             if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  749.             {

  750.                 portName  = pData->name;

  751.                 portName += ":";

  752.             }

  753. 

  754.             portName += "events-out";

  755.             portName.truncate(portNameSize);

  756. 

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

  758.         }

  759. 

  760.         if (forcedStereoIn || forcedStereoOut)

  761.             pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  762.         else

  763.             pData->options &= ~PLUGIN_OPTION_FORCE_STEREO;

  764. 

  765.         // plugin hints

  766.         pData->hints = 0x0;

  767. 

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

  769.             pData->hints |= PLUGIN_IS_RTSAFE;

  770. 

  771. #ifndef BUILD_BRIDGE

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

  773.             pData->hints |= PLUGIN_CAN_DRYWET;

  774. 

  775.         if (aOuts > 0)

  776.             pData->hints |= PLUGIN_CAN_VOLUME;

  777. 

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

  779.             pData->hints |= PLUGIN_CAN_BALANCE;

  780. #endif

  781. 

  782.         // extra plugin hints

  783.         pData->extraHints  = 0x0;

  784.         pData->extraHints |= PLUGIN_EXTRA_HINT_CAN_RUN_RACK;

  785. 

  786.         // check initial latency

  787.         findInitialLatencyValue(aIns, aOuts);

  788. 

  789.         fForcedStereoIn  = forcedStereoIn;

  790.         fForcedStereoOut = forcedStereoOut;

  791. 

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

  793. 

  794.         if (pData->active)

  795.             activate();

  796. 

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

  798.     }

  799. 

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

  801.     {

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

  803.             return;

  804. 

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

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

  807.         CARLA_SAFE_ASSERT_RETURN(handle != nullptr,);

  808. 

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

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

  811. 

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

  813.         {

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

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

  816. 

  817.             try {

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

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

  820.         }

  821. 

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

  823.         {

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

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

  826. 

  827.             try {

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

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

  830.         }

  831. 

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

  833.         {

  834.             try {

  835.                 fDescriptor->activate(handle);

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

  837.         }

  838. 

  839.         try {

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

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

  842. 

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

  844.         {

  845.             try {

  846.                 fDescriptor->deactivate(handle);

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

  848.         }

  849. 

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

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

  852.         {

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

  854. #ifndef BUILD_BRIDGE

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

  856. #endif

  857.         }

  858.     }

  859. 

  860.     // -------------------------------------------------------------------

  861.     // Plugin processing

  862. 

  863.     void activate() noexcept override

  864.     {

  865.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  866. 

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

  868.         {

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

  870.             {

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

  872.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  873. 

  874.                 try {

  875.                     fDescriptor->activate(handle);

  876.                 } CARLA_SAFE_EXCEPTION("LADSPA activate");

  877.             }

  878.         }

  879.     }

  880. 

  881.     void deactivate() noexcept override

  882.     {

  883.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  884. 

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

  886.         {

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

  888.             {

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

  890.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  891. 

  892.                 try {

  893.                     fDescriptor->deactivate(handle);

  894.                 } CARLA_SAFE_EXCEPTION("LADSPA deactivate");

  895.             }

  896.         }

  897.     }

  898. 

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

  900.     {

  901.         // --------------------------------------------------------------------------------------------------------

  902.         // Check if active

  903. 

  904.         if (! pData->active)

  905.         {

  906.             // disable any output sound

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

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

  909.             return;

  910.         }

  911. 

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

  913.         // Check if needs reset

  914. 

  915.         if (pData->needsReset)

  916.         {

  917.             // nothing to do

  918.             pData->needsReset = false;

  919.         }

  920. 

  921.         // --------------------------------------------------------------------------------------------------------

  922.         // Event Input and Processing

  923. 

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

  925.         {

  926.             // ----------------------------------------------------------------------------------------------------

  927.             // Event Input (System)

  928. 

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

  930. 

  931.             uint32_t timeOffset = 0;

  932. 

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

  934.             {

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

  936. 

  937.                 if (event.time >= frames)

  938.                     continue;

  939. 

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

  941. 

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

  943.                 {

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

  945.                         timeOffset = event.time;

  946.                 }

  947. 

  948.                 switch (event.type)

  949.                 {

  950.                 case kEngineEventTypeNull:

  951.                     break;

  952. 

  953.                 case kEngineEventTypeControl: {

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

  955. 

  956.                     switch (ctrlEvent.type)

  957.                     {

  958.                     case kEngineControlEventTypeNull:

  959.                         break;

  960. 

  961.                     case kEngineControlEventTypeParameter: {

  962. #ifndef BUILD_BRIDGE

  963.                         // Control backend stuff

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

  965.                         {

  966.                             float value;

  967. 

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

  969.                             {

  970.                                 value = ctrlEvent.value;

  971.                                 setDryWet(value, false, false);

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

  973.                             }

  974. 

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

  976.                             {

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

  978.                                 setVolume(value, false, false);

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

  980.                             }

  981. 

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

  983.                             {

  984.                                 float left, right;

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

  986. 

  987.                                 if (value < 0.0f)

  988.                                 {

  989.                                     left  = -1.0f;

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

  991.                                 }

  992.                                 else if (value > 0.0f)

  993.                                 {

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

  995.                                     right = 1.0f;

  996.                                 }

  997.                                 else

  998.                                 {

  999.                                     left  = -1.0f;

  1000.                                     right = 1.0f;

  1001.                                 }

  1002. 

  1003.                                 setBalanceLeft(left, false, false);

  1004.                                 setBalanceRight(right, false, false);

  1005.                                 pData->postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_BALANCE_LEFT, 0, left);

  1006.                                 pData->postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_BALANCE_RIGHT, 0, right);

  1007.                             }

  1008.                         }

  1009. #endif

  1010.                         // Control plugin parameters

  1011.                         for (uint32_t k=0; k < pData->param.count; ++k)

  1012.                         {

  1013.                             if (pData->param.data[k].midiChannel != event.channel)

  1014.                                 continue;

  1015.                             if (pData->param.data[k].midiCC != ctrlEvent.param)

  1016.                                 continue;

  1017.                             if (pData->param.data[k].type != PARAMETER_INPUT)

  1018.                                 continue;

  1019.                             if ((pData->param.data[k].hints & PARAMETER_IS_AUTOMABLE) == 0)

  1020.                                 continue;

  1021. 

  1022.                             float value;

  1023. 

  1024.                             if (pData->param.data[k].hints & PARAMETER_IS_BOOLEAN)

  1025.                             {

  1026.                                 value = (ctrlEvent.value < 0.5f) ? pData->param.ranges[k].min : pData->param.ranges[k].max;

  1027.                             }

  1028.                             else

  1029.                             {

  1030.                                 if (pData->param.data[k].hints & PARAMETER_IS_LOGARITHMIC)

  1031.                                     value = pData->param.ranges[k].getUnnormalizedLogValue(ctrlEvent.value);

  1032.                                 else

  1033.                                     value = pData->param.ranges[k].getUnnormalizedValue(ctrlEvent.value);

  1034. 

  1035.                                 if (pData->param.data[k].hints & PARAMETER_IS_INTEGER)

  1036.                                     value = std::rint(value);

  1037.                             }

  1038. 

  1039.                             setParameterValue(k, value, false, false, false);

  1040.                             pData->postponeRtEvent(kPluginPostRtEventParameterChange, static_cast<int32_t>(k), 0, value);

  1041.                         }

  1042. 

  1043.                         break;

  1044.                     } // case kEngineControlEventTypeParameter

  1045. 

  1046.                     case kEngineControlEventTypeMidiBank:

  1047.                     case kEngineControlEventTypeMidiProgram:

  1048.                     case kEngineControlEventTypeAllSoundOff:

  1049.                     case kEngineControlEventTypeAllNotesOff:

  1050.                         break;

  1051.                     } // switch (ctrlEvent.type)

  1052.                     break;

  1053.                 } // case kEngineEventTypeControl

  1054. 

  1055.                 case kEngineEventTypeMidi:

  1056.                     break;

  1057.                 } // switch (event.type)

  1058.             }

  1059. 

  1060.             pData->postRtEvents.trySplice();

  1061. 

  1062.             if (frames > timeOffset)

  1063.                 processSingle(audioIn, audioOut, frames - timeOffset, timeOffset);

  1064. 

  1065.         } // End of Event Input and Processing

  1066. 

  1067.         // --------------------------------------------------------------------------------------------------------

  1068.         // Plugin processing (no events)

  1069. 

  1070.         else

  1071.         {

  1072.             processSingle(audioIn, audioOut, frames, 0);

  1073. 

  1074.         } // End of Plugin processing (no events)

  1075. 

  1076.         // --------------------------------------------------------------------------------------------------------

  1077.         // Control Output

  1078. 

  1079.         if (pData->event.portOut != nullptr)

  1080.         {

  1081.             uint8_t  channel;

  1082.             uint16_t param;

  1083.             float    value;

  1084. 

  1085.             for (uint32_t k=0; k < pData->param.count; ++k)

  1086.             {

  1087.                 if (pData->param.data[k].type != PARAMETER_OUTPUT)

  1088.                     continue;

  1089. 

  1090.                 pData->param.ranges[k].fixValue(fParamBuffers[k]);

  1091. 

  1092.                 if (pData->param.data[k].midiCC > 0)

  1093.                 {

  1094.                     channel = pData->param.data[k].midiChannel;

  1095.                     param   = static_cast<uint16_t>(pData->param.data[k].midiCC);

  1096.                     value   = pData->param.ranges[k].getNormalizedValue(fParamBuffers[k]);

  1097.                     pData->event.portOut->writeControlEvent(0, channel, kEngineControlEventTypeParameter, param, value);

  1098.                 }

  1099.             }

  1100.         } // End of Control Output

  1101.     }

  1102. 

  1103.     bool processSingle(const float** const audioIn, float** const audioOut, const uint32_t frames,

  1104.                        const uint32_t timeOffset)

  1105.     {

  1106.         CARLA_SAFE_ASSERT_RETURN(frames > 0, false);

  1107. 

  1108.         if (pData->audioIn.count > 0)

  1109.         {

  1110.             CARLA_SAFE_ASSERT_RETURN(audioIn != nullptr, false);

  1111.         }

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

  1113.         {

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

  1115.         }

  1116. 

  1117.         // --------------------------------------------------------------------------------------------------------

  1118.         // Try lock, silence otherwise

  1119. 

  1120.         if (pData->engine->isOffline())

  1121.         {

  1122.             pData->singleMutex.lock();

  1123.         }

  1124.         else if (! pData->singleMutex.tryLock())

  1125.         {

  1126.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1127.             {

  1128.                 for (uint32_t k=0; k < frames; ++k)

  1129.                     audioOut[i][k+timeOffset] = 0.0f;

  1130.             }

  1131. 

  1132.             return false;

  1133.         }

  1134. 

  1135.         const int iframes(static_cast<int>(frames));

  1136. 

  1137.         // --------------------------------------------------------------------------------------------------------

  1138.         // Set audio buffers

  1139. 

  1140.         const bool customMonoOut   = pData->audioOut.count == 2 && fForcedStereoOut && ! fForcedStereoIn;

  1141.         const bool customStereoOut = pData->audioOut.count == 2 && fForcedStereoIn  && ! fForcedStereoOut;

  1142. 

  1143.         if (! customMonoOut)

  1144.         {

  1145.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1146.                 FloatVectorOperations::clear(fAudioOutBuffers[i], iframes);

  1147.         }

  1148. 

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

  1150.             FloatVectorOperations::copy(fAudioInBuffers[i], audioIn[i]+timeOffset, iframes);

  1151. 

  1152.         // --------------------------------------------------------------------------------------------------------

  1153.         // Run plugin

  1154. 

  1155.         uint instn = 0;

  1156.         for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin2(); it.valid(); it.next(), ++instn)

  1157.         {

  1158.             LADSPA_Handle const handle(it.getValue(nullptr));

  1159.             CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  1160. 

  1161.             // ----------------------------------------------------------------------------------------------------

  1162.             // Mixdown for forced stereo

  1163. 

  1164.             if (customMonoOut)

  1165.                 FloatVectorOperations::clear(fAudioOutBuffers[instn], iframes);

  1166. 

  1167.             // ----------------------------------------------------------------------------------------------------

  1168.             // Run it

  1169. 

  1170.             try {

  1171.                 fDescriptor->run(handle, frames);

  1172.             } CARLA_SAFE_EXCEPTION("LADSPA run");

  1173. 

  1174.             // ----------------------------------------------------------------------------------------------------

  1175.             // Mixdown for forced stereo

  1176. 

  1177.             if (customMonoOut)

  1178.                 FloatVectorOperations::multiply(fAudioOutBuffers[instn], 0.5f, iframes);

  1179.             else if (customStereoOut)

  1180.                 FloatVectorOperations::copy(fExtraStereoBuffer[instn], fAudioOutBuffers[instn], iframes);

  1181.         }

  1182. 

  1183.         if (customStereoOut)

  1184.         {

  1185.             FloatVectorOperations::copy(fAudioOutBuffers[0], fExtraStereoBuffer[0], iframes);

  1186.             FloatVectorOperations::copy(fAudioOutBuffers[1], fExtraStereoBuffer[1], iframes);

  1187.         }

  1188. 

  1189. #ifndef BUILD_BRIDGE

  1190.         // --------------------------------------------------------------------------------------------------------

  1191.         // Post-processing (dry/wet, volume and balance)

  1192. 

  1193.         {

  1194.             const bool doDryWet  = (pData->hints & PLUGIN_CAN_DRYWET) != 0 && carla_isNotEqual(pData->postProc.dryWet, 1.0f);

  1195.             const bool doBalance = (pData->hints & PLUGIN_CAN_BALANCE) != 0 && ! (carla_isEqual(pData->postProc.balanceLeft, -1.0f) && carla_isEqual(pData->postProc.balanceRight, 1.0f));

  1196.             const bool isMono    = (pData->audioIn.count == 1);

  1197. 

  1198.             bool isPair;

  1199.             float bufValue, oldBufLeft[doBalance ? frames : 1];

  1200. 

  1201.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1202.             {

  1203.                 // Dry/Wet

  1204.                 if (doDryWet)

  1205.                 {

  1206.                     const uint32_t c = isMono ? 0 : i;

  1207. 

  1208.                     for (uint32_t k=0; k < frames; ++k)

  1209.                     {

  1210.                         if (k < pData->latency.frames)

  1211.                             bufValue = pData->latency.buffers[c][k];

  1212.                         else if (pData->latency.frames < frames)

  1213.                             bufValue = fAudioInBuffers[c][k-pData->latency.frames];

  1214.                         else

  1215.                             bufValue = fAudioInBuffers[c][k];

  1216. 

  1217.                         fAudioOutBuffers[i][k] = (fAudioOutBuffers[i][k] * pData->postProc.dryWet) + (bufValue * (1.0f - pData->postProc.dryWet));

  1218.                     }

  1219.                 }

  1220. 

  1221.                 // Balance

  1222.                 if (doBalance)

  1223.                 {

  1224.                     isPair = (i % 2 == 0);

  1225. 

  1226.                     if (isPair)

  1227.                     {

  1228.                         CARLA_ASSERT(i+1 < pData->audioOut.count);

  1229.                         FloatVectorOperations::copy(oldBufLeft, fAudioOutBuffers[i], iframes);

  1230.                     }

  1231. 

  1232.                     float balRangeL = (pData->postProc.balanceLeft  + 1.0f)/2.0f;

  1233.                     float balRangeR = (pData->postProc.balanceRight + 1.0f)/2.0f;

  1234. 

  1235.                     for (uint32_t k=0; k < frames; ++k)

  1236.                     {

  1237.                         if (isPair)

  1238.                         {

  1239.                             // left

  1240.                             fAudioOutBuffers[i][k]  = oldBufLeft[k]            * (1.0f - balRangeL);

  1241.                             fAudioOutBuffers[i][k] += fAudioOutBuffers[i+1][k] * (1.0f - balRangeR);

  1242.                         }

  1243.                         else

  1244.                         {

  1245.                             // right

  1246.                             fAudioOutBuffers[i][k]  = fAudioOutBuffers[i][k] * balRangeR;

  1247.                             fAudioOutBuffers[i][k] += oldBufLeft[k]          * balRangeL;

  1248.                         }

  1249.                     }

  1250.                 }

  1251. 

  1252.                 // Volume (and buffer copy)

  1253.                 {

  1254.                     for (uint32_t k=0; k < frames; ++k)

  1255.                         audioOut[i][k+timeOffset] = fAudioOutBuffers[i][k] * pData->postProc.volume;

  1256.                 }

  1257.             }

  1258. 

  1259.         } // End of Post-processing

  1260. 

  1261.         // --------------------------------------------------------------------------------------------------------

  1262.         // Save latency values for next callback

  1263. 

  1264.         if (const uint32_t latframes = pData->latency.frames)

  1265.         {

  1266.             CARLA_SAFE_ASSERT(timeOffset == 0);

  1267. 

  1268.             if (latframes <= frames)

  1269.             {

  1270.                 for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1271.                     FloatVectorOperations::copy(pData->latency.buffers[i], audioIn[i]+(frames-latframes), static_cast<int>(latframes));

  1272.             }

  1273.             else

  1274.             {

  1275.                 const uint32_t diff = pData->latency.frames-frames;

  1276. 

  1277.                 for (uint32_t i=0, k; i<pData->audioIn.count; ++i)

  1278.                 {

  1279.                     // push back buffer by 'frames'

  1280.                     for (k=0; k < diff; ++k)

  1281.                         pData->latency.buffers[i][k] = pData->latency.buffers[i][k+frames];

  1282. 

  1283.                     // put current input at the end

  1284.                     for (uint32_t j=0; k < latframes; ++j, ++k)

  1285.                         pData->latency.buffers[i][k] = audioIn[i][j];

  1286.                 }

  1287.             }

  1288.         }

  1289. 

  1290. #else // BUILD_BRIDGE

  1291.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1292.         {

  1293.             for (uint32_t k=0; k < frames; ++k)

  1294.                 audioOut[i][k+timeOffset] = fAudioOutBuffers[i][k];

  1295.         }

  1296. #endif

  1297. 

  1298.         // --------------------------------------------------------------------------------------------------------

  1299. 

  1300.         pData->singleMutex.unlock();

  1301.         return true;

  1302.     }

  1303. 

  1304.     void bufferSizeChanged(const uint32_t newBufferSize) override

  1305.     {

  1306.         CARLA_ASSERT_INT(newBufferSize > 0, newBufferSize);

  1307.         carla_debug("CarlaPluginLADSPA::bufferSizeChanged(%i) - start", newBufferSize);

  1308. 

  1309.         const int iBufferSize(static_cast<int>(newBufferSize));

  1310. 

  1311.         for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1312.         {

  1313.             if (fAudioInBuffers[i] != nullptr)

  1314.                 delete[] fAudioInBuffers[i];

  1315. 

  1316.             fAudioInBuffers[i] = new float[newBufferSize];

  1317.             FloatVectorOperations::clear(fAudioInBuffers[i], iBufferSize);

  1318.         }

  1319. 

  1320.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1321.         {

  1322.             if (fAudioOutBuffers[i] != nullptr)

  1323.                 delete[] fAudioOutBuffers[i];

  1324. 

  1325.             fAudioOutBuffers[i] = new float[newBufferSize];

  1326.             FloatVectorOperations::clear(fAudioOutBuffers[i], iBufferSize);

  1327.         }

  1328. 

  1329.         if (fExtraStereoBuffer[0] != nullptr)

  1330.         {

  1331.             delete[] fExtraStereoBuffer[0];

  1332.             fExtraStereoBuffer[0] = nullptr;

  1333.         }

  1334. 

  1335.         if (fExtraStereoBuffer[1] != nullptr)

  1336.         {

  1337.             delete[] fExtraStereoBuffer[1];

  1338.             fExtraStereoBuffer[1] = nullptr;

  1339.         }

  1340. 

  1341.         if (fForcedStereoIn && pData->audioOut.count == 2)

  1342.         {

  1343.             fExtraStereoBuffer[0] = new float[newBufferSize];

  1344.             fExtraStereoBuffer[1] = new float[newBufferSize];

  1345.             FloatVectorOperations::clear(fExtraStereoBuffer[0], iBufferSize);

  1346.             FloatVectorOperations::clear(fExtraStereoBuffer[1], iBufferSize);

  1347.         }

  1348. 

  1349.         reconnectAudioPorts();

  1350. 

  1351.         carla_debug("CarlaPluginLADSPA::bufferSizeChanged(%i) - end", newBufferSize);

  1352.     }

  1353. 

  1354.     void sampleRateChanged(const double newSampleRate) override

  1355.     {

  1356.         CARLA_ASSERT_INT(newSampleRate > 0.0, newSampleRate);

  1357.         carla_stdout("CarlaPluginLADSPA::sampleRateChanged(%g) - start", newSampleRate);

  1358. 

  1359.         if (pData->active)

  1360.             deactivate();

  1361. 

  1362.         const std::size_t instanceCount(fHandles.count());

  1363. 

  1364.         if (fDescriptor->cleanup == nullptr)

  1365.         {

  1366.             for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin2(); it.valid(); it.next())

  1367.             {

  1368.                 LADSPA_Handle const handle(it.getValue(nullptr));

  1369.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  1370. 

  1371.                 try {

  1372.                     fDescriptor->cleanup(handle);

  1373.                 } CARLA_SAFE_EXCEPTION("LADSPA cleanup");

  1374.             }

  1375.         }

  1376. 

  1377.         fHandles.clear();

  1378. 

  1379.         for (std::size_t i=0; i<instanceCount; ++i)

  1380.             addInstance();

  1381. 

  1382.         reconnectAudioPorts();

  1383. 

  1384.         if (pData->active)

  1385.             activate();

  1386. 

  1387.         carla_stdout("CarlaPluginLADSPA::sampleRateChanged(%g) - end", newSampleRate);

  1388.     }

  1389. 

  1390.     void reconnectAudioPorts() const noexcept

  1391.     {

  1392.         if (fForcedStereoIn)

  1393.         {

  1394.             if (LADSPA_Handle const handle = fHandles.getFirst(nullptr))

  1395.             {

  1396.                 try {

  1397.                     fDescriptor->connect_port(handle, pData->audioIn.ports[0].rindex, fAudioInBuffers[0]);

  1398.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port (forced stereo input, first)");

  1399.             }

  1400. 

  1401.             if (LADSPA_Handle const handle = fHandles.getLast(nullptr))

  1402.             {

  1403.                 try {

  1404.                     fDescriptor->connect_port(handle, pData->audioIn.ports[1].rindex, fAudioInBuffers[1]);

  1405.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port (forced stereo input, last)");

  1406.             }

  1407.         }

  1408.         else

  1409.         {

  1410.             for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin2(); it.valid(); it.next())

  1411.             {

  1412.                 LADSPA_Handle const handle(it.getValue(nullptr));

  1413.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  1414. 

  1415.                 for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1416.                 {

  1417.                     try {

  1418.                         fDescriptor->connect_port(handle, pData->audioIn.ports[i].rindex, fAudioInBuffers[i]);

  1419.                     } CARLA_SAFE_EXCEPTION("LADSPA connect_port (audio input)");

  1420.                 }

  1421.             }

  1422.         }

  1423. 

  1424.         if (fForcedStereoOut)

  1425.         {

  1426.             if (LADSPA_Handle const handle = fHandles.getFirst(nullptr))

  1427.             {

  1428.                 try {

  1429.                     fDescriptor->connect_port(handle, pData->audioOut.ports[0].rindex, fAudioOutBuffers[0]);

  1430.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port (forced stereo output, first)");

  1431.             }

  1432. 

  1433.             if (LADSPA_Handle const handle = fHandles.getLast(nullptr))

  1434.             {

  1435.                 try {

  1436.                     fDescriptor->connect_port(handle, pData->audioOut.ports[1].rindex, fAudioOutBuffers[1]);

  1437.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port (forced stereo output, last)");

  1438.             }

  1439.         }

  1440.         else

  1441.         {

  1442.             for (LinkedList<LADSPA_Handle>::Itenerator it = fHandles.begin2(); it.valid(); it.next())

  1443.             {

  1444.                 LADSPA_Handle const handle(it.getValue(nullptr));

  1445.                 CARLA_SAFE_ASSERT_CONTINUE(handle != nullptr);

  1446. 

  1447.                 for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1448.                 {

  1449.                     try {

  1450.                         fDescriptor->connect_port(handle, pData->audioOut.ports[i].rindex, fAudioOutBuffers[i]);

  1451.                     } CARLA_SAFE_EXCEPTION("LADSPA connect_port (audio output)");

  1452.                 }

  1453.             }

  1454.         }

  1455.     }

  1456. 

  1457.     // -------------------------------------------------------------------

  1458.     // Plugin buffers

  1459. 

  1460.     void clearBuffers() noexcept override

  1461.     {

  1462.         carla_debug("CarlaPluginLADSPA::clearBuffers() - start");

  1463. 

  1464.         if (fAudioInBuffers != nullptr)

  1465.         {

  1466.             for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1467.             {

  1468.                 if (fAudioInBuffers[i] != nullptr)

  1469.                 {

  1470.                     delete[] fAudioInBuffers[i];

  1471.                     fAudioInBuffers[i] = nullptr;

  1472.                 }

  1473.             }

  1474. 

  1475.             delete[] fAudioInBuffers;

  1476.             fAudioInBuffers = nullptr;

  1477.         }

  1478. 

  1479.         if (fAudioOutBuffers != nullptr)

  1480.         {

  1481.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1482.             {

  1483.                 if (fAudioOutBuffers[i] != nullptr)

  1484.                 {

  1485.                     delete[] fAudioOutBuffers[i];

  1486.                     fAudioOutBuffers[i] = nullptr;

  1487.                 }

  1488.             }

  1489. 

  1490.             delete[] fAudioOutBuffers;

  1491.             fAudioOutBuffers = nullptr;

  1492.         }

  1493. 

  1494.         if (fExtraStereoBuffer[0] != nullptr)

  1495.         {

  1496.             delete[] fExtraStereoBuffer[0];

  1497.             fExtraStereoBuffer[0] = nullptr;

  1498.         }

  1499. 

  1500.         if (fExtraStereoBuffer[1] != nullptr)

  1501.         {

  1502.             delete[] fExtraStereoBuffer[1];

  1503.             fExtraStereoBuffer[1] = nullptr;

  1504.         }

  1505. 

  1506.         if (fParamBuffers != nullptr)

  1507.         {

  1508.             delete[] fParamBuffers;

  1509.             fParamBuffers = nullptr;

  1510.         }

  1511. 

  1512.         CarlaPlugin::clearBuffers();

  1513. 

  1514.         carla_debug("CarlaPluginLADSPA::clearBuffers() - end");

  1515.     }

  1516. 

  1517.     // -------------------------------------------------------------------

  1518. 

  1519.     const void* getNativeDescriptor() const noexcept override

  1520.     {

  1521.         return fDescriptor;

  1522.     }

  1523. 

  1524.     const void* getExtraStuff() const noexcept override

  1525.     {

  1526.         return fRdfDescriptor;

  1527.     }

  1528. 

  1529.     // -------------------------------------------------------------------

  1530. 

  1531.     bool init(const char* const filename, const char* name, const char* const label, const uint options,

  1532.               const LADSPA_RDF_Descriptor* const rdfDescriptor)

  1533.     {

  1534.         CARLA_SAFE_ASSERT_RETURN(pData->engine != nullptr, false);

  1535. 

  1536.         // ---------------------------------------------------------------

  1537.         // first checks

  1538. 

  1539.         if (pData->client != nullptr)

  1540.         {

  1541.             pData->engine->setLastError("Plugin client is already registered");

  1542.             return false;

  1543.         }

  1544. 

  1545.         if (filename == nullptr || filename[0] == '\0')

  1546.         {

  1547.             pData->engine->setLastError("null filename");

  1548.             return false;

  1549.         }

  1550. 

  1551.         if (label == nullptr || label[0] == '\0')

  1552.         {

  1553.             pData->engine->setLastError("null label");

  1554.             return false;

  1555.         }

  1556. 

  1557.         // ---------------------------------------------------------------

  1558.         // open DLL

  1559. 

  1560.         if (! pData->libOpen(filename))

  1561.         {

  1562.             pData->engine->setLastError(pData->libError(filename));

  1563.             return false;

  1564.         }

  1565. 

  1566.         // ---------------------------------------------------------------

  1567.         // get DLL main entry

  1568. 

  1569.         const LADSPA_Descriptor_Function descFn = pData->libSymbol<LADSPA_Descriptor_Function>("ladspa_descriptor");

  1570. 

  1571.         if (descFn == nullptr)

  1572.         {

  1573.             pData->engine->setLastError("Could not find the LASDPA Descriptor in the plugin library");

  1574.             return false;

  1575.         }

  1576. 

  1577.         // ---------------------------------------------------------------

  1578.         // get descriptor that matches label

  1579. 

  1580.         for (ulong d=0;; ++d)

  1581.         {

  1582.             try {

  1583.                 fDescriptor = descFn(d);

  1584.             }

  1585.             catch(...) {

  1586.                 carla_stderr2("Caught exception when trying to get LADSPA descriptor");

  1587.                 fDescriptor = nullptr;

  1588.                 break;

  1589.             }

  1590. 

  1591.             if (fDescriptor == nullptr)

  1592.                 break;

  1593. 

  1594.             if (fDescriptor->Label == nullptr || fDescriptor->Label[0] == '\0')

  1595.             {

  1596.                 carla_stderr2("WARNING - Got an invalid label, will not use this plugin");

  1597.                 fDescriptor = nullptr;

  1598.                 break;

  1599.             }

  1600.             if (fDescriptor->run == nullptr)

  1601.             {

  1602.                 carla_stderr2("WARNING - Plugin has no run, cannot use it");

  1603.                 fDescriptor = nullptr;

  1604.                 break;

  1605.             }

  1606. 

  1607.             if (std::strcmp(fDescriptor->Label, label) == 0)

  1608.                 break;

  1609.         }

  1610. 

  1611.         if (fDescriptor == nullptr)

  1612.         {

  1613.             pData->engine->setLastError("Could not find the requested plugin label in the plugin library");

  1614.             return false;

  1615.         }

  1616. 

  1617.         // ---------------------------------------------------------------

  1618.         // check for fixed buffer size requirement

  1619. 

  1620.         fNeedsFixedBuffers = CarlaString(filename).contains("dssi-vst", true);

  1621. 

  1622.         if (fNeedsFixedBuffers && ! pData->engine->usesConstantBufferSize())

  1623.         {

  1624.             pData->engine->setLastError("Cannot use this plugin under the current engine.\n"

  1625.                                         "The plugin requires a fixed block size which is not possible right now.");

  1626.             return false;

  1627.         }

  1628. 

  1629.         // ---------------------------------------------------------------

  1630.         // get info

  1631. 

  1632.         if (is_ladspa_rdf_descriptor_valid(rdfDescriptor, fDescriptor))

  1633.             fRdfDescriptor = ladspa_rdf_dup(rdfDescriptor);

  1634. 

  1635.         if (name == nullptr || name[0] == '\0')

  1636.         {

  1637.             /**/ if (fRdfDescriptor != nullptr && fRdfDescriptor->Title != nullptr && fRdfDescriptor->Title[0] != '\0')

  1638.                 name = fRdfDescriptor->Title;

  1639.             else if (fDescriptor->Name != nullptr && fDescriptor->Name[0] != '\0')

  1640.                 name = fDescriptor->Name;

  1641.             else

  1642.                 name = fDescriptor->Label;

  1643.         }

  1644. 

  1645.         pData->name = pData->engine->getUniquePluginName(name);

  1646.         pData->filename = carla_strdup(filename);

  1647. 

  1648.         // ---------------------------------------------------------------

  1649.         // register client

  1650. 

  1651.         pData->client = pData->engine->addClient(this);

  1652. 

  1653.         if (pData->client == nullptr || ! pData->client->isOk())

  1654.         {

  1655.             pData->engine->setLastError("Failed to register plugin client");

  1656.             return false;

  1657.         }

  1658. 

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

  1660.         // initialize plugin

  1661. 

  1662.         if (! addInstance())

  1663.             return false;

  1664. 

  1665.         // ---------------------------------------------------------------

  1666.         // find latency port index

  1667. 

  1668.         for (uint32_t i=0, iCtrl=0, count=getSafePortCount(); i<count; ++i)

  1669.         {

  1670.             const int portType(fDescriptor->PortDescriptors[i]);

  1671. 

  1672.             if (! LADSPA_IS_PORT_CONTROL(portType))

  1673.                 continue;

  1674. 

  1675.             const uint32_t index(iCtrl++);

  1676. 

  1677.             if (! LADSPA_IS_PORT_OUTPUT(portType))

  1678.                 continue;

  1679. 

  1680.             const char* const portName(fDescriptor->PortNames[i]);

  1681.             CARLA_SAFE_ASSERT_BREAK(portName != nullptr);

  1682. 

  1683.             if (std::strcmp(portName, "latency")  == 0 ||

  1684.                 std::strcmp(portName, "_latency") == 0)

  1685.             {

  1686.                 fLatencyIndex = static_cast<int32_t>(index);

  1687.                 break;

  1688.             }

  1689.         }

  1690. 

  1691.         // ---------------------------------------------------------------

  1692.         // set default options

  1693. 

  1694.         pData->options = 0x0;

  1695. 

  1696.         /**/ if (fLatencyIndex >= 0 || fNeedsFixedBuffers)

  1697.             pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;

  1698.          else if (options & PLUGIN_OPTION_FIXED_BUFFERS)

  1699.             pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;

  1700. 

  1701.         /**/ if (pData->engine->getOptions().forceStereo)

  1702.             pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  1703.          else if (options & PLUGIN_OPTION_FORCE_STEREO)

  1704.             pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  1705. 

  1706.         return true;

  1707.     }

  1708. 

  1709.     // -------------------------------------------------------------------

  1710. 

  1711. private:

  1712.     LinkedList<LADSPA_Handle>    fHandles;

  1713.     const LADSPA_Descriptor*     fDescriptor;

  1714.     const LADSPA_RDF_Descriptor* fRdfDescriptor;

  1715. 

  1716.     float** fAudioInBuffers;

  1717.     float** fAudioOutBuffers;

  1718.     float*  fExtraStereoBuffer[2]; // used only if forcedStereoIn and audioOut == 2

  1719.     float*  fParamBuffers;

  1720. 

  1721.     int32_t fLatencyIndex; // -1 if invalid

  1722.     bool    fForcedStereoIn;

  1723.     bool    fForcedStereoOut;

  1724.     bool    fNeedsFixedBuffers;

  1725. 

  1726.     // -------------------------------------------------------------------

  1727. 

  1728.     bool addInstance()

  1729.     {

  1730.         LADSPA_Handle handle;

  1731. 

  1732.         try {

  1733.             handle = fDescriptor->instantiate(fDescriptor, static_cast<ulong>(pData->engine->getSampleRate()));

  1734.         } CARLA_SAFE_EXCEPTION_RETURN_ERR("LADSPA instantiate", "Plugin failed to initialize");

  1735. 

  1736.         for (uint32_t i=0, count=pData->param.count; i<count; ++i)

  1737.         {

  1738.             const int32_t rindex(pData->param.data[i].rindex);

  1739.             CARLA_SAFE_ASSERT_CONTINUE(rindex >= 0);

  1740. 

  1741.             try {

  1742.                 fDescriptor->connect_port(handle, static_cast<ulong>(rindex), &fParamBuffers[i]);

  1743.             } CARLA_SAFE_EXCEPTION("LADSPA connect_port");

  1744.         }

  1745. 

  1746.         if (fHandles.append(handle))

  1747.             return true;

  1748. 

  1749.         try {

  1750.             fDescriptor->cleanup(handle);

  1751.         } CARLA_SAFE_EXCEPTION("LADSPA cleanup");

  1752. 

  1753.         pData->engine->setLastError("Out of memory");

  1754.         return false;

  1755.     }

  1756. 

  1757.     uint32_t getSafePortCount() const noexcept

  1758.     {

  1759.         if (fDescriptor->PortCount == 0)

  1760.             return 0;

  1761. 

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

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

  1764.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->PortNames != nullptr, 0);

  1765. 

  1766.         return static_cast<uint32_t>(fDescriptor->PortCount);

  1767.     }

  1768. 

  1769.     bool getSeparatedParameterNameOrUnit(const char* const paramName, char* const strBuf, const bool wantName) const noexcept

  1770.     {

  1771.         if (_getSeparatedParameterNameOrUnitImpl(paramName, strBuf, wantName, true))

  1772.             return true;

  1773.         if (_getSeparatedParameterNameOrUnitImpl(paramName, strBuf, wantName, false))

  1774.             return true;

  1775.         return false;

  1776.     }

  1777. 

  1778.     static bool _getSeparatedParameterNameOrUnitImpl(const char* const paramName, char* const strBuf,

  1779.                                                      const bool wantName, const bool useBracket) noexcept

  1780.     {

  1781.         const char* const sepBracketStart(std::strstr(paramName, useBracket ? " [" : " ("));

  1782. 

  1783.         if (sepBracketStart == nullptr)

  1784.             return false;

  1785. 

  1786.         const char* const sepBracketEnd(std::strstr(sepBracketStart, useBracket ? "]" : ")"));

  1787. 

  1788.         if (sepBracketEnd == nullptr)

  1789.             return false;

  1790. 

  1791.         const std::size_t unitSize(static_cast<std::size_t>(sepBracketEnd-sepBracketStart-2));

  1792. 

  1793.         if (unitSize > 7) // very unlikely to have such big unit

  1794.             return false;

  1795. 

  1796.         const std::size_t sepIndex(std::strlen(paramName)-unitSize-3);

  1797. 

  1798.         // just in case

  1799.         if (sepIndex+2 >= STR_MAX)

  1800.             return false;

  1801. 

  1802.         if (wantName)

  1803.         {

  1804.             std::strncpy(strBuf, paramName, sepIndex);

  1805.             strBuf[sepIndex] = '\0';

  1806.         }

  1807.         else

  1808.         {

  1809.             std::strncpy(strBuf, paramName+(sepIndex+2), unitSize);

  1810.             strBuf[unitSize] = '\0';

  1811.         }

  1812. 

  1813.         return true;

  1814.     }

  1815. 

  1816.     // -------------------------------------------------------------------

  1817. 

  1818.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CarlaPluginLADSPA)

  1819. };

  1820. 

  1821. // -------------------------------------------------------------------------------------------------------------------

  1822. 

  1823. CarlaPlugin* CarlaPlugin::newLADSPA(const Initializer& init, const LADSPA_RDF_Descriptor* const rdfDescriptor)

  1824. {

  1825.     carla_debug("CarlaPlugin::newLADSPA({%p, \"%s\", \"%s\", \"%s\", " P_INT64 ", %x}, %p)",

  1826.                 init.engine, init.filename, init.name, init.label, init.uniqueId, init.options, rdfDescriptor);

  1827. 

  1828.     CarlaPluginLADSPA* const plugin(new CarlaPluginLADSPA(init.engine, init.id));

  1829. 

  1830.     if (! plugin->init(init.filename, init.name, init.label, init.options, rdfDescriptor))

  1831.     {

  1832.         delete plugin;

  1833.         return nullptr;

  1834.     }

  1835. 

  1836.     return plugin;

  1837. }

  1838. 

  1839. // -------------------------------------------------------------------------------------------------------------------

  1840. 

  1841. CARLA_BACKEND_END_NAMESPACE