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Carla/source/backend/plugin/LadspaPlugin.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. #ifdef WANT_LADSPA

  22. 

  23. #include "CarlaLadspaUtils.hpp"

  24. #include "CarlaMathUtils.hpp"

  25. 

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

  27. 

  28. CARLA_BACKEND_START_NAMESPACE

  29. 

  30. #if 0

  31. }

  32. #endif

  33. 

  34. // -----------------------------------------------------

  35. 

  36. class LadspaPlugin : public CarlaPlugin

  37. {

  38. public:

  39.     LadspaPlugin(CarlaEngine* const engine, const uint id) noexcept

  40.         : CarlaPlugin(engine, id),

  41.           fHandle(nullptr),

  42.           fHandle2(nullptr),

  43.           fDescriptor(nullptr),

  44.           fRdfDescriptor(nullptr),

  45.           fAudioInBuffers(nullptr),

  46.           fAudioOutBuffers(nullptr),

  47.           fParamBuffers(nullptr),

  48.           fLatencyChanged(false),

  49.           fLatencyIndex(-1)

  50.     {

  51.         carla_debug("LadspaPlugin::LadspaPlugin(%p, %i)", engine, id);

  52.     }

  53. 

  54.     ~LadspaPlugin() noexcept override

  55.     {

  56.         carla_debug("LadspaPlugin::~LadspaPlugin()");

  57. 

  58.         pData->singleMutex.lock();

  59.         pData->masterMutex.lock();

  60. 

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

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

  63. 

  64.         if (pData->active)

  65.         {

  66.             deactivate();

  67.             pData->active = false;

  68.         }

  69. 

  70.         if (fDescriptor != nullptr)

  71.         {

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

  73.             {

  74.                 if (fHandle != nullptr)

  75.                 {

  76.                     try {

  77.                         fDescriptor->cleanup(fHandle);

  78.                     } CARLA_SAFE_EXCEPTION("LADSPA cleanup");

  79.                 }

  80. 

  81.                 if (fHandle2 != nullptr)

  82.                 {

  83.                     try {

  84.                         fDescriptor->cleanup(fHandle2);

  85.                     } CARLA_SAFE_EXCEPTION("LADSPA cleanup #2");

  86.                 }

  87.             }

  88. 

  89.             fHandle     = nullptr;

  90.             fHandle2    = nullptr;

  91.             fDescriptor = nullptr;

  92.         }

  93. 

  94.         if (fRdfDescriptor != nullptr)

  95.         {

  96.             delete fRdfDescriptor;

  97.             fRdfDescriptor = nullptr;

  98.         }

  99. 

  100.         clearBuffers();

  101.     }

  102. 

  103.     // -------------------------------------------------------------------

  104.     // Information (base)

  105. 

  106.     PluginType getType() const noexcept override

  107.     {

  108.         return PLUGIN_LADSPA;

  109.     }

  110. 

  111.     PluginCategory getCategory() const noexcept override

  112.     {

  113.         if (fRdfDescriptor != nullptr)

  114.         {

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

  116. 

  117.             // Specific Types

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

  119.                 return PLUGIN_CATEGORY_DELAY;

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

  121.                 return PLUGIN_CATEGORY_MODULATOR;

  122.             if (category & (LADSPA_PLUGIN_AMPLIFIER))

  123.                 return PLUGIN_CATEGORY_DYNAMICS;

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

  125.                 return PLUGIN_CATEGORY_UTILITY;

  126. 

  127.             // Pre-set LADSPA Types

  128.             if (LADSPA_IS_PLUGIN_DYNAMICS(category))

  129.                 return PLUGIN_CATEGORY_DYNAMICS;

  130.             if (LADSPA_IS_PLUGIN_AMPLITUDE(category))

  131.                 return PLUGIN_CATEGORY_MODULATOR;

  132.             if (LADSPA_IS_PLUGIN_EQ(category))

  133.                 return PLUGIN_CATEGORY_EQ;

  134.             if (LADSPA_IS_PLUGIN_FILTER(category))

  135.                 return PLUGIN_CATEGORY_FILTER;

  136.             if (LADSPA_IS_PLUGIN_FREQUENCY(category))

  137.                 return PLUGIN_CATEGORY_UTILITY;

  138.             if (LADSPA_IS_PLUGIN_SIMULATOR(category))

  139.                 return PLUGIN_CATEGORY_OTHER;

  140.             if (LADSPA_IS_PLUGIN_TIME(category))

  141.                 return PLUGIN_CATEGORY_DELAY;

  142.             if (LADSPA_IS_PLUGIN_GENERATOR(category))

  143.                 return PLUGIN_CATEGORY_SYNTH;

  144.         }

  145. 

  146.         return CarlaPlugin::getCategory();

  147.     }

  148. 

  149.     int64_t getUniqueId() const noexcept override

  150.     {

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

  152. 

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

  154.     }

  155. 

  156.     // -------------------------------------------------------------------

  157.     // Information (count)

  158. 

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

  160.     {

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

  162. 

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

  164. 

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

  166.         {

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

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

  169.         }

  170. 

  171.         return 0;

  172.     }

  173. 

  174.     // -------------------------------------------------------------------

  175.     // Information (current data)

  176. 

  177.     // nothing

  178. 

  179.     // -------------------------------------------------------------------

  180.     // Information (per-plugin data)

  181. 

  182.     uint getOptionsAvailable() const noexcept override

  183.     {

  184. #ifdef __USE_GNU

  185.         const bool isDssiVst(strcasestr(pData->filename, "dssi-vst") != nullptr);

  186. #else

  187.         const bool isDssiVst(std::strstr(pData->filename, "dssi-vst") != nullptr);

  188. #endif

  189. 

  190.         uint options = 0x0;

  191. 

  192.         if (! isDssiVst)

  193.         {

  194.             if (fLatencyIndex == -1)

  195.                 options |= PLUGIN_OPTION_FIXED_BUFFERS;

  196. 

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

  198.             {

  199.                 if (pData->options & PLUGIN_OPTION_FORCE_STEREO)

  200.                     options |= PLUGIN_OPTION_FORCE_STEREO;

  201.                 else if (pData->audioIn.count <= 1 && pData->audioOut.count <= 1 && (pData->audioIn.count != 0 || pData->audioOut.count != 0))

  202.                     options |= PLUGIN_OPTION_FORCE_STEREO;

  203.             }

  204.         }

  205. 

  206.         return options;

  207.     }

  208. 

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

  210.     {

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

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

  213. 

  214.         return fParamBuffers[parameterId];

  215.     }

  216. 

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

  218.     {

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

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

  221. 

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

  223. 

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

  225.         {

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

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

  228. 

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

  230.             return scalePoint->Value;

  231.         }

  232. 

  233.         return 0.0f;

  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. 

  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 getParameterSymbol(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. 

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

  303.         {

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

  305. 

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

  307.             {

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

  309. 

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

  311.                 return;

  312.             }

  313.         }

  314. 

  315.         nullStrBuf(strBuf);

  316.     }

  317. 

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

  319.     {

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

  321. 

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

  323. 

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

  325.         {

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

  327. 

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

  329.             {

  330.                 switch (port->Unit)

  331.                 {

  332.                 case LADSPA_UNIT_DB:

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

  334.                     return;

  335.                 case LADSPA_UNIT_COEF:

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

  337.                     return;

  338.                 case LADSPA_UNIT_HZ:

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

  340.                     return;

  341.                 case LADSPA_UNIT_S:

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

  343.                     return;

  344.                 case LADSPA_UNIT_MS:

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

  346.                     return;

  347.                 case LADSPA_UNIT_MIN:

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

  349.                     return;

  350.                 }

  351.             }

  352.         }

  353. 

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

  355. 

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

  357.             return;

  358. 

  359.         nullStrBuf(strBuf);

  360.     }

  361. 

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

  363.     {

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

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

  366. 

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

  368. 

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

  370.         {

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

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

  373. 

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

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

  376. 

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

  378.             return;

  379.         }

  380. 

  381.         nullStrBuf(strBuf);

  382.     }

  383. 

  384.     // -------------------------------------------------------------------

  385.     // Set data (state)

  386. 

  387.     // nothing

  388. 

  389.     // -------------------------------------------------------------------

  390.     // Set data (internal stuff)

  391. 

  392.     // nothing

  393. 

  394.     // -------------------------------------------------------------------

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

  396. 

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

  398.     {

  399.         CARLA_SAFE_ASSERT_RETURN(fParamBuffers != nullptr,);

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

  401. 

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

  403.         fParamBuffers[parameterId] = fixedValue;

  404. 

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

  406.     }

  407. 

  408.     // -------------------------------------------------------------------

  409.     // Set ui stuff

  410. 

  411.     void idle() override

  412.     {

  413.         if (fLatencyChanged && fLatencyIndex != -1)

  414.         {

  415.             fLatencyChanged = false;

  416. 

  417.             const int32_t latency(static_cast<int32_t>(fParamBuffers[fLatencyIndex]));

  418. 

  419.             if (latency >= 0)

  420.             {

  421.                 const uint32_t ulatency(static_cast<uint32_t>(latency));

  422. 

  423.                 if (pData->latency != ulatency)

  424.                 {

  425.                     carla_stdout("latency changed to %i", latency);

  426. 

  427.                     const ScopedSingleProcessLocker sspl(this, true);

  428. 

  429.                     pData->latency = ulatency;

  430.                     pData->client->setLatency(ulatency);

  431. #ifndef BUILD_BRIDGE

  432.                     pData->recreateLatencyBuffers();

  433. #endif

  434.                 }

  435.             }

  436.             else

  437.                 carla_safe_assert_int("latency >= 0", __FILE__, __LINE__, latency);

  438.         }

  439.     }

  440. 

  441.     // -------------------------------------------------------------------

  442.     // Plugin state

  443. 

  444.     void reload() override

  445.     {

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

  447.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  448.         CARLA_SAFE_ASSERT_RETURN(fHandle != nullptr,);

  449.         carla_debug("LadspaPlugin::reload() - start");

  450. 

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

  452. 

  453.         // Safely disable plugin for reload

  454.         const ScopedDisabler sd(this);

  455. 

  456.         if (pData->active)

  457.             deactivate();

  458. 

  459.         clearBuffers();

  460. 

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

  462.         const uint32_t portCount(getSafePortCount());

  463. 

  464.         uint32_t aIns, aOuts, params;

  465.         aIns = aOuts = params = 0;

  466. 

  467.         bool forcedStereoIn, forcedStereoOut;

  468.         forcedStereoIn = forcedStereoOut = false;

  469. 

  470.         bool needsCtrlIn, needsCtrlOut;

  471.         needsCtrlIn = needsCtrlOut = false;

  472. 

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

  474.         {

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

  476. 

  477.             if (LADSPA_IS_PORT_AUDIO(portType))

  478.             {

  479.                 if (LADSPA_IS_PORT_INPUT(portType))

  480.                     aIns += 1;

  481.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  482.                     aOuts += 1;

  483.             }

  484.             else if (LADSPA_IS_PORT_CONTROL(portType))

  485.                 params += 1;

  486.         }

  487. 

  488.         if ((pData->options & PLUGIN_OPTION_FORCE_STEREO) != 0 && (aIns == 1 || aOuts == 1))

  489.         {

  490.             if (fHandle2 == nullptr)

  491.             {

  492.                 try {

  493.                     fHandle2 = fDescriptor->instantiate(fDescriptor, static_cast<ulong>(sampleRate));

  494.                 } CARLA_SAFE_EXCEPTION("LADSPA instantiate #2");

  495.             }

  496. 

  497.             if (fHandle2 != nullptr)

  498.             {

  499.                 if (aIns == 1)

  500.                 {

  501.                     aIns = 2;

  502.                     forcedStereoIn = true;

  503.                 }

  504. 

  505.                 if (aOuts == 1)

  506.                 {

  507.                     aOuts = 2;

  508.                     forcedStereoOut = true;

  509.                 }

  510.             }

  511.         }

  512. 

  513.         if (aIns > 0)

  514.         {

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

  516.             fAudioInBuffers = new float*[aIns];

  517. 

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

  519.                 fAudioInBuffers[i] = nullptr;

  520.         }

  521. 

  522.         if (aOuts > 0)

  523.         {

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

  525.             fAudioOutBuffers = new float*[aOuts];

  526.             needsCtrlIn = true;

  527. 

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

  529.                 fAudioOutBuffers[i] = nullptr;

  530.         }

  531. 

  532.         if (params > 0)

  533.         {

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

  535. 

  536.             fParamBuffers = new float[params];

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

  538.         }

  539. 

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

  541.         CarlaString portName;

  542. 

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

  544.         {

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

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

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

  548. 

  549.             if (LADSPA_IS_PORT_AUDIO(portType))

  550.             {

  551.                 portName.clear();

  552. 

  553.                 if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  554.                 {

  555.                     portName  = pData->name;

  556.                     portName += ":";

  557.                 }

  558. 

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

  560.                 {

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

  562.                 }

  563.                 else

  564.                 {

  565.                     if (LADSPA_IS_PORT_INPUT(portType))

  566.                     {

  567.                         if (aIns > 1)

  568.                         {

  569.                             portName += "audio-in_";

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

  571.                         }

  572.                         else

  573.                             portName += "audio-in";

  574.                     }

  575.                     else

  576.                     {

  577.                         if (aOuts > 1)

  578.                         {

  579.                             portName += "audio-out_";

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

  581.                         }

  582.                         else

  583.                             portName += "audio-out";

  584.                     }

  585.                 }

  586. 

  587.                 portName.truncate(portNameSize);

  588. 

  589.                 if (LADSPA_IS_PORT_INPUT(portType))

  590.                 {

  591.                     const uint32_t j = iAudioIn++;

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

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

  594. 

  595.                     if (forcedStereoIn)

  596.                     {

  597.                         portName += "_2";

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

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

  600.                     }

  601.                 }

  602.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  603.                 {

  604.                     const uint32_t j = iAudioOut++;

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

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

  607. 

  608.                     if (forcedStereoOut)

  609.                     {

  610.                         portName += "_2";

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

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

  613.                     }

  614.                 }

  615.                 else

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

  617.             }

  618.             else if (LADSPA_IS_PORT_CONTROL(portType))

  619.             {

  620.                 const uint32_t j = iCtrl++;

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

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

  623. 

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

  625. 

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

  627. 

  628.                 // min value

  629.                 if (LADSPA_IS_HINT_BOUNDED_BELOW(portRangeHints.HintDescriptor))

  630.                     min = portRangeHints.LowerBound;

  631.                 else

  632.                     min = 0.0f;

  633. 

  634.                 // max value

  635.                 if (LADSPA_IS_HINT_BOUNDED_ABOVE(portRangeHints.HintDescriptor))

  636.                     max = portRangeHints.UpperBound;

  637.                 else

  638.                     max = 1.0f;

  639. 

  640.                 if (min > max)

  641.                 {

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

  643.                     min = max - 0.1f;

  644.                 }

  645.                 else if (min == max)

  646.                 {

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

  648.                     max = min + 0.1f;

  649.                 }

  650. 

  651.                 // default value

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

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

  654.                 else

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

  656. 

  657.                 if (def < min)

  658.                     def = min;

  659.                 else if (def > max)

  660.                     def = max;

  661. 

  662.                 if (LADSPA_IS_HINT_SAMPLE_RATE(portRangeHints.HintDescriptor))

  663.                 {

  664.                     min *= sampleRate;

  665.                     max *= sampleRate;

  666.                     def *= sampleRate;

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

  668.                 }

  669. 

  670.                 if (LADSPA_IS_HINT_TOGGLED(portRangeHints.HintDescriptor))

  671.                 {

  672.                     step = max - min;

  673.                     stepSmall = step;

  674.                     stepLarge = step;

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

  676.                 }

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

  678.                 {

  679.                     step = 1.0f;

  680.                     stepSmall = 1.0f;

  681.                     stepLarge = 10.0f;

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

  683.                 }

  684.                 else

  685.                 {

  686.                     const float range = max - min;

  687.                     step = range/100.0f;

  688.                     stepSmall = range/1000.0f;

  689.                     stepLarge = range/10.0f;

  690.                 }

  691. 

  692.                 if (LADSPA_IS_PORT_INPUT(portType))

  693.                 {

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

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

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

  697.                     needsCtrlIn = true;

  698.                 }

  699.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  700.                 {

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

  702. 

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

  704.                     {

  705.                         min = 0.0f;

  706.                         max = sampleRate;

  707.                         def = 0.0f;

  708.                         step = 1.0f;

  709.                         stepSmall = 1.0f;

  710.                         stepLarge = 1.0f;

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

  712.                         CARLA_SAFE_ASSERT(fLatencyIndex == -1);

  713.                         fLatencyIndex = static_cast<int32_t>(j);

  714.                     }

  715.                     else

  716.                     {

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

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

  719.                         needsCtrlOut = true;

  720.                     }

  721.                 }

  722.                 else

  723.                 {

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

  725.                 }

  726. 

  727.                 // extra parameter hints

  728.                 if (LADSPA_IS_HINT_LOGARITHMIC(portRangeHints.HintDescriptor))

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

  730. 

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

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

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

  734. 

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

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

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

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

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

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

  741. 

  742.                 // Start parameters in their default values

  743.                 fParamBuffers[j] = def;

  744. 

  745.                 try {

  746.                     fDescriptor->connect_port(fHandle, i, &fParamBuffers[j]);

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

  748. 

  749.                 if (fHandle2 != nullptr)

  750.                 {

  751.                     try {

  752.                         fDescriptor->connect_port(fHandle2, i, &fParamBuffers[j]);

  753.                     } CARLA_SAFE_EXCEPTION("LADSPA connect_port parameter #2");

  754.                 }

  755.             }

  756.             else

  757.             {

  758.                 // Not Audio or Control

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

  760. 

  761.                 try {

  762.                     fDescriptor->connect_port(fHandle, i, nullptr);

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

  764. 

  765.                 if (fHandle2 != nullptr)

  766.                 {

  767.                     try {

  768.                         fDescriptor->connect_port(fHandle2, i, nullptr);

  769.                     } CARLA_SAFE_EXCEPTION("LADSPA connect_port null #2");

  770.                 }

  771.             }

  772.         }

  773. 

  774.         if (needsCtrlIn)

  775.         {

  776.             portName.clear();

  777. 

  778.             if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  779.             {

  780.                 portName  = pData->name;

  781.                 portName += ":";

  782.             }

  783. 

  784.             portName += "events-in";

  785.             portName.truncate(portNameSize);

  786. 

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

  788.         }

  789. 

  790.         if (needsCtrlOut)

  791.         {

  792.             portName.clear();

  793. 

  794.             if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  795.             {

  796.                 portName  = pData->name;

  797.                 portName += ":";

  798.             }

  799. 

  800.             portName += "events-out";

  801.             portName.truncate(portNameSize);

  802. 

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

  804.         }

  805. 

  806.         if (forcedStereoIn || forcedStereoOut)

  807.             pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  808.         else

  809.             pData->options &= ~PLUGIN_OPTION_FORCE_STEREO;

  810. 

  811.         // plugin hints

  812.         pData->hints = 0x0;

  813. 

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

  815.             pData->hints |= PLUGIN_IS_RTSAFE;

  816. 

  817. #ifndef BUILD_BRIDGE

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

  819.             pData->hints |= PLUGIN_CAN_DRYWET;

  820. 

  821.         if (aOuts > 0)

  822.             pData->hints |= PLUGIN_CAN_VOLUME;

  823. 

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

  825.             pData->hints |= PLUGIN_CAN_BALANCE;

  826. #endif

  827. 

  828.         // extra plugin hints

  829.         pData->extraHints = 0x0;

  830. 

  831.         if (aIns <= 2 && aOuts <= 2 && (aIns == aOuts || aIns == 0 || aOuts == 0))

  832.             pData->extraHints |= PLUGIN_EXTRA_HINT_CAN_RUN_RACK;

  833. 

  834.         // check latency

  835.         if (fLatencyIndex >= 0)

  836.         {

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

  838. 

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

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

  841. 

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

  843.             {

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

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

  846. 

  847.                 try {

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

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

  850.             }

  851. 

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

  853.             {

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

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

  856. 

  857.                 try {

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

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

  860.             }

  861. 

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

  863.             {

  864.                 try {

  865.                     fDescriptor->activate(fHandle);

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

  867.             }

  868. 

  869.             try {

  870.                 fDescriptor->run(fHandle, 2);

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

  872. 

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

  874.             {

  875.                 try {

  876.                     fDescriptor->deactivate(fHandle);

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

  878.             }

  879. 

  880.             const int32_t latency(static_cast<int32_t>(fParamBuffers[fLatencyIndex]));

  881. 

  882.             if (latency >= 0)

  883.             {

  884.                 const uint32_t ulatency(static_cast<uint32_t>(latency));

  885. 

  886.                 if (pData->latency != ulatency)

  887.                 {

  888.                     carla_stdout("latency = %i", latency);

  889. 

  890.                     pData->latency = ulatency;

  891.                     pData->client->setLatency(ulatency);

  892. #ifndef BUILD_BRIDGE

  893.                     pData->recreateLatencyBuffers();

  894. #endif

  895.                 }

  896.             }

  897.             else

  898.                 carla_safe_assert_int("latency >= 0", __FILE__, __LINE__, latency);

  899. 

  900.             fLatencyChanged = false;

  901.         }

  902. 

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

  904. 

  905.         if (pData->active)

  906.             activate();

  907. 

  908.         carla_debug("LadspaPlugin::reload() - end");

  909.     }

  910. 

  911.     // -------------------------------------------------------------------

  912.     // Plugin processing

  913. 

  914.     void activate() noexcept override

  915.     {

  916.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  917.         CARLA_SAFE_ASSERT_RETURN(fHandle != nullptr,);

  918. 

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

  920.         {

  921.             try {

  922.                 fDescriptor->activate(fHandle);

  923.             } CARLA_SAFE_EXCEPTION("LADSPA activate");

  924. 

  925.             if (fHandle2 != nullptr)

  926.             {

  927.                 try {

  928.                     fDescriptor->activate(fHandle2);

  929.                 } CARLA_SAFE_EXCEPTION("LADSPA activate #2");

  930.             }

  931.         }

  932.     }

  933. 

  934.     void deactivate() noexcept override

  935.     {

  936.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  937.         CARLA_SAFE_ASSERT_RETURN(fHandle != nullptr,);

  938. 

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

  940.         {

  941.             try {

  942.                 fDescriptor->deactivate(fHandle);

  943.             } CARLA_SAFE_EXCEPTION("LADSPA deactivate");

  944. 

  945.             if (fHandle2 != nullptr)

  946.             {

  947.                 try {

  948.                     fDescriptor->deactivate(fHandle2);

  949.                 } CARLA_SAFE_EXCEPTION("LADSPA deactivate #2");

  950.             }

  951.         }

  952.     }

  953. 

  954.     void process(float** const inBuffer, float** const outBuffer, const uint32_t frames) override

  955.     {

  956.         // --------------------------------------------------------------------------------------------------------

  957.         // Check if active

  958. 

  959.         if (! pData->active)

  960.         {

  961.             // disable any output sound

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

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

  964.             return;

  965.         }

  966. 

  967.         // --------------------------------------------------------------------------------------------------------

  968.         // Check if needs reset

  969. 

  970.         if (pData->needsReset)

  971.         {

  972. #ifndef BUILD_BRIDGE

  973.             if (pData->latency > 0)

  974.             {

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

  976.                     FloatVectorOperations::clear(pData->latencyBuffers[i], static_cast<int>(pData->latency));

  977.             }

  978. #endif

  979. 

  980.             pData->needsReset = false;

  981.         }

  982. 

  983.         // --------------------------------------------------------------------------------------------------------

  984.         // Event Input and Processing

  985. 

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

  987.         {

  988.             // ----------------------------------------------------------------------------------------------------

  989.             // Event Input (System)

  990. 

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

  992. 

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

  994.             uint32_t timeOffset = 0;

  995. 

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

  997.             {

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

  999. 

  1000.                 if (event.time >= frames)

  1001.                     continue;

  1002. 

  1003.                 CARLA_ASSERT_INT2(event.time >= timeOffset, event.time, timeOffset);

  1004. 

  1005.                 if (isSampleAccurate && event.time > timeOffset)

  1006.                 {

  1007.                     if (processSingle(inBuffer, outBuffer, event.time - timeOffset, timeOffset))

  1008.                         timeOffset = event.time;

  1009.                 }

  1010. 

  1011.                 switch (event.type)

  1012.                 {

  1013.                 case kEngineEventTypeNull:

  1014.                     break;

  1015. 

  1016.                 case kEngineEventTypeControl: {

  1017.                     const EngineControlEvent& ctrlEvent(event.ctrl);

  1018. 

  1019.                     switch (ctrlEvent.type)

  1020.                     {

  1021.                     case kEngineControlEventTypeNull:

  1022.                         break;

  1023. 

  1024.                     case kEngineControlEventTypeParameter: {

  1025. #ifndef BUILD_BRIDGE

  1026.                         // Control backend stuff

  1027.                         if (event.channel == pData->ctrlChannel)

  1028.                         {

  1029.                             float value;

  1030. 

  1031.                             if (MIDI_IS_CONTROL_BREATH_CONTROLLER(ctrlEvent.param) && (pData->hints & PLUGIN_CAN_DRYWET) != 0)

  1032.                             {

  1033.                                 value = ctrlEvent.value;

  1034.                                 setDryWet(value, false, false);

  1035.                                 pData->postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_DRYWET, 0, value);

  1036.                                 break;

  1037.                             }

  1038. 

  1039.                             if (MIDI_IS_CONTROL_CHANNEL_VOLUME(ctrlEvent.param) && (pData->hints & PLUGIN_CAN_VOLUME) != 0)

  1040.                             {

  1041.                                 value = ctrlEvent.value*127.0f/100.0f;

  1042.                                 setVolume(value, false, false);

  1043.                                 pData->postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_VOLUME, 0, value);

  1044.                                 break;

  1045.                             }

  1046. 

  1047.                             if (MIDI_IS_CONTROL_BALANCE(ctrlEvent.param) && (pData->hints & PLUGIN_CAN_BALANCE) != 0)

  1048.                             {

  1049.                                 float left, right;

  1050.                                 value = ctrlEvent.value/0.5f - 1.0f;

  1051. 

  1052.                                 if (value < 0.0f)

  1053.                                 {

  1054.                                     left  = -1.0f;

  1055.                                     right = (value*2.0f)+1.0f;

  1056.                                 }

  1057.                                 else if (value > 0.0f)

  1058.                                 {

  1059.                                     left  = (value*2.0f)-1.0f;

  1060.                                     right = 1.0f;

  1061.                                 }

  1062.                                 else

  1063.                                 {

  1064.                                     left  = -1.0f;

  1065.                                     right = 1.0f;

  1066.                                 }

  1067. 

  1068.                                 setBalanceLeft(left, false, false);

  1069.                                 setBalanceRight(right, false, false);

  1070.                                 pData->postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_BALANCE_LEFT, 0, left);

  1071.                                 pData->postponeRtEvent(kPluginPostRtEventParameterChange, PARAMETER_BALANCE_RIGHT, 0, right);

  1072.                                 break;

  1073.                             }

  1074.                         }

  1075. #endif

  1076. 

  1077.                         // Control plugin parameters

  1078.                         for (uint32_t k=0; k < pData->param.count; ++k)

  1079.                         {

  1080.                             if (pData->param.data[k].midiChannel != event.channel)

  1081.                                 continue;

  1082.                             if (pData->param.data[k].midiCC != ctrlEvent.param)

  1083.                                 continue;

  1084.                             if (pData->param.data[k].type != PARAMETER_INPUT)

  1085.                                 continue;

  1086.                             if ((pData->param.data[k].hints & PARAMETER_IS_AUTOMABLE) == 0)

  1087.                                 continue;

  1088. 

  1089.                             float value;

  1090. 

  1091.                             if (pData->param.data[k].hints & PARAMETER_IS_BOOLEAN)

  1092.                             {

  1093.                                 value = (ctrlEvent.value < 0.5f) ? pData->param.ranges[k].min : pData->param.ranges[k].max;

  1094.                             }

  1095.                             else

  1096.                             {

  1097.                                 value = pData->param.ranges[k].getUnnormalizedValue(ctrlEvent.value);

  1098. 

  1099.                                 if (pData->param.data[k].hints & PARAMETER_IS_INTEGER)

  1100.                                     value = std::rint(value);

  1101.                             }

  1102. 

  1103.                             setParameterValue(k, value, false, false, false);

  1104.                             pData->postponeRtEvent(kPluginPostRtEventParameterChange, static_cast<int32_t>(k), 0, value);

  1105.                             break;

  1106.                         }

  1107. 

  1108.                         break;

  1109.                     } // case kEngineControlEventTypeParameter

  1110. 

  1111.                     case kEngineControlEventTypeMidiBank:

  1112.                     case kEngineControlEventTypeMidiProgram:

  1113.                     case kEngineControlEventTypeAllSoundOff:

  1114.                     case kEngineControlEventTypeAllNotesOff:

  1115.                         break;

  1116.                     } // switch (ctrlEvent.type)

  1117.                     break;

  1118.                 } // case kEngineEventTypeControl

  1119. 

  1120.                 case kEngineEventTypeMidi:

  1121.                     break;

  1122.                 } // switch (event.type)

  1123.             }

  1124. 

  1125.             pData->postRtEvents.trySplice();

  1126. 

  1127.             if (frames > timeOffset)

  1128.                 processSingle(inBuffer, outBuffer, frames - timeOffset, timeOffset);

  1129. 

  1130.         } // End of Event Input and Processing

  1131. 

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

  1133.         // Plugin processing (no events)

  1134. 

  1135.         else

  1136.         {

  1137.             processSingle(inBuffer, outBuffer, frames, 0);

  1138. 

  1139.         } // End of Plugin processing (no events)

  1140. 

  1141. #ifndef BUILD_BRIDGE

  1142.         // --------------------------------------------------------------------------------------------------------

  1143.         // Latency, save values for next callback

  1144. 

  1145.         if (fLatencyIndex != -1)

  1146.         {

  1147.             if (pData->latency != static_cast<uint32_t>(fParamBuffers[fLatencyIndex]))

  1148.             {

  1149.                 fLatencyChanged = true;

  1150.             }

  1151.             else if (pData->latency > 0)

  1152.             {

  1153.                 if (pData->latency <= frames)

  1154.                 {

  1155.                     for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1156.                         FloatVectorOperations::copy(pData->latencyBuffers[i], inBuffer[i]+(frames-pData->latency), static_cast<int>(pData->latency));

  1157.                 }

  1158.                 else

  1159.                 {

  1160.                     for (uint32_t i=0, j, k; i < pData->audioIn.count; ++i)

  1161.                     {

  1162.                         for (k=0; k < pData->latency-frames; ++k)

  1163.                             pData->latencyBuffers[i][k] = pData->latencyBuffers[i][k+frames];

  1164.                         for (j=0; k < pData->latency; ++j, ++k)

  1165.                             pData->latencyBuffers[i][k] = inBuffer[i][j];

  1166.                     }

  1167.                 }

  1168.             }

  1169.         }

  1170. #endif

  1171. 

  1172.         // --------------------------------------------------------------------------------------------------------

  1173.         // Control Output

  1174. 

  1175.         if (pData->event.portOut != nullptr)

  1176.         {

  1177.             uint8_t  channel;

  1178.             uint16_t param;

  1179.             float    value;

  1180. 

  1181.             for (uint32_t k=0; k < pData->param.count; ++k)

  1182.             {

  1183.                 if (pData->param.data[k].type != PARAMETER_OUTPUT)

  1184.                     continue;

  1185. 

  1186.                 pData->param.ranges[k].fixValue(fParamBuffers[k]);

  1187. 

  1188.                 if (pData->param.data[k].midiCC > 0)

  1189.                 {

  1190.                     channel = pData->param.data[k].midiChannel;

  1191.                     param   = static_cast<uint16_t>(pData->param.data[k].midiCC);

  1192.                     value   = pData->param.ranges[k].getNormalizedValue(fParamBuffers[k]);

  1193.                     pData->event.portOut->writeControlEvent(0, channel, kEngineControlEventTypeParameter, param, value);

  1194.                 }

  1195.             }

  1196.         } // End of Control Output

  1197.     }

  1198. 

  1199.     bool processSingle(float** const inBuffer, float** const outBuffer, const uint32_t frames, const uint32_t timeOffset)

  1200.     {

  1201.         CARLA_SAFE_ASSERT_RETURN(frames > 0, false);

  1202. 

  1203.         if (pData->audioIn.count > 0)

  1204.         {

  1205.             CARLA_SAFE_ASSERT_RETURN(inBuffer != nullptr, false);

  1206.         }

  1207.         if (pData->audioOut.count > 0)

  1208.         {

  1209.             CARLA_SAFE_ASSERT_RETURN(outBuffer != nullptr, false);

  1210.         }

  1211. 

  1212.         // --------------------------------------------------------------------------------------------------------

  1213.         // Try lock, silence otherwise

  1214. 

  1215.         if (pData->engine->isOffline())

  1216.         {

  1217.             pData->singleMutex.lock();

  1218.         }

  1219.         else if (! pData->singleMutex.tryLock())

  1220.         {

  1221.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1222.             {

  1223.                 for (uint32_t k=0; k < frames; ++k)

  1224.                     outBuffer[i][k+timeOffset] = 0.0f;

  1225.             }

  1226. 

  1227.             return false;

  1228.         }

  1229. 

  1230.         // --------------------------------------------------------------------------------------------------------

  1231.         // Reset audio buffers

  1232. 

  1233.         for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1234.             FloatVectorOperations::copy(fAudioInBuffers[i], inBuffer[i]+timeOffset, static_cast<int>(frames));

  1235. 

  1236.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1237.             FloatVectorOperations::clear(fAudioOutBuffers[i], static_cast<int>(frames));

  1238. 

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

  1240.         // Run plugin

  1241. 

  1242.         try {

  1243.             fDescriptor->run(fHandle, frames);

  1244.         } CARLA_SAFE_EXCEPTION("LADSPA run");

  1245. 

  1246.         if (fHandle2 != nullptr)

  1247.         {

  1248.             try {

  1249.                 fDescriptor->run(fHandle2, frames);

  1250.             } CARLA_SAFE_EXCEPTION("LADSPA run #2");

  1251.         }

  1252. 

  1253. #ifndef BUILD_BRIDGE

  1254.         // --------------------------------------------------------------------------------------------------------

  1255.         // Post-processing (dry/wet, volume and balance)

  1256. 

  1257.         {

  1258.             const bool doDryWet  = (pData->hints & PLUGIN_CAN_DRYWET) != 0 && pData->postProc.dryWet != 1.0f;

  1259.             const bool doBalance = (pData->hints & PLUGIN_CAN_BALANCE) != 0 && (pData->postProc.balanceLeft != -1.0f || pData->postProc.balanceRight != 1.0f);

  1260.             const bool isMono    = (pData->audioIn.count == 1);

  1261. 

  1262.             bool isPair;

  1263.             float bufValue, oldBufLeft[doBalance ? frames : 1];

  1264. 

  1265.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1266.             {

  1267.                 // Dry/Wet

  1268.                 if (doDryWet)

  1269.                 {

  1270.                     for (uint32_t k=0; k < frames; ++k)

  1271.                     {

  1272.                         if (k < pData->latency)

  1273.                             bufValue = pData->latencyBuffers[isMono ? 0 : i][k];

  1274.                         else if (pData->latency < frames)

  1275.                             bufValue = fAudioInBuffers[isMono ? 0 : i][k-pData->latency];

  1276.                         else

  1277.                             bufValue = fAudioInBuffers[isMono ? 0 : i][k];

  1278. 

  1279.                         fAudioOutBuffers[i][k] = (fAudioOutBuffers[i][k] * pData->postProc.dryWet) + (bufValue * (1.0f - pData->postProc.dryWet));

  1280.                     }

  1281.                 }

  1282. 

  1283.                 // Balance

  1284.                 if (doBalance)

  1285.                 {

  1286.                     isPair = (i % 2 == 0);

  1287. 

  1288.                     if (isPair)

  1289.                     {

  1290.                         CARLA_ASSERT(i+1 < pData->audioOut.count);

  1291.                         FloatVectorOperations::copy(oldBufLeft, fAudioOutBuffers[i], static_cast<int>(frames));

  1292.                     }

  1293. 

  1294.                     float balRangeL = (pData->postProc.balanceLeft  + 1.0f)/2.0f;

  1295.                     float balRangeR = (pData->postProc.balanceRight + 1.0f)/2.0f;

  1296. 

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

  1298.                     {

  1299.                         if (isPair)

  1300.                         {

  1301.                             // left

  1302.                             fAudioOutBuffers[i][k]  = oldBufLeft[k]            * (1.0f - balRangeL);

  1303.                             fAudioOutBuffers[i][k] += fAudioOutBuffers[i+1][k] * (1.0f - balRangeR);

  1304.                         }

  1305.                         else

  1306.                         {

  1307.                             // right

  1308.                             fAudioOutBuffers[i][k]  = fAudioOutBuffers[i][k] * balRangeR;

  1309.                             fAudioOutBuffers[i][k] += oldBufLeft[k]          * balRangeL;

  1310.                         }

  1311.                     }

  1312.                 }

  1313. 

  1314.                 // Volume (and buffer copy)

  1315.                 {

  1316.                     for (uint32_t k=0; k < frames; ++k)

  1317.                         outBuffer[i][k+timeOffset] = fAudioOutBuffers[i][k] * pData->postProc.volume;

  1318.                 }

  1319.             }

  1320. 

  1321.         } // End of Post-processing

  1322. 

  1323. #else // BUILD_BRIDGE

  1324.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1325.         {

  1326.             for (uint32_t k=0; k < frames; ++k)

  1327.                 outBuffer[i][k+timeOffset] = fAudioOutBuffers[i][k];

  1328.         }

  1329. #endif

  1330. 

  1331.         // --------------------------------------------------------------------------------------------------------

  1332. 

  1333.         pData->singleMutex.unlock();

  1334.         return true;

  1335.     }

  1336. 

  1337.     void bufferSizeChanged(const uint32_t newBufferSize) override

  1338.     {

  1339.         CARLA_ASSERT_INT(newBufferSize > 0, newBufferSize);

  1340.         carla_debug("LadspaPlugin::bufferSizeChanged(%i) - start", newBufferSize);

  1341. 

  1342.         for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1343.         {

  1344.             if (fAudioInBuffers[i] != nullptr)

  1345.                 delete[] fAudioInBuffers[i];

  1346.             fAudioInBuffers[i] = new float[newBufferSize];

  1347.         }

  1348. 

  1349.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1350.         {

  1351.             if (fAudioOutBuffers[i] != nullptr)

  1352.                 delete[] fAudioOutBuffers[i];

  1353.             fAudioOutBuffers[i] = new float[newBufferSize];

  1354.         }

  1355. 

  1356.         if (fHandle2 == nullptr)

  1357.         {

  1358.             for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1359.             {

  1360.                 CARLA_ASSERT(fAudioInBuffers[i] != nullptr);

  1361. 

  1362.                 try {

  1363.                     fDescriptor->connect_port(fHandle, pData->audioIn.ports[i].rindex, fAudioInBuffers[i]);

  1364.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port audio input");

  1365.             }

  1366. 

  1367.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1368.             {

  1369.                 CARLA_ASSERT(fAudioOutBuffers[i] != nullptr);

  1370. 

  1371.                 try {

  1372.                     fDescriptor->connect_port(fHandle, pData->audioOut.ports[i].rindex, fAudioOutBuffers[i]);

  1373.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port audio output");

  1374.             }

  1375.         }

  1376.         else

  1377.         {

  1378.             if (pData->audioIn.count > 0)

  1379.             {

  1380.                 CARLA_ASSERT(pData->audioIn.count == 2);

  1381.                 CARLA_ASSERT(fAudioInBuffers[0] != nullptr);

  1382.                 CARLA_ASSERT(fAudioInBuffers[1] != nullptr);

  1383. 

  1384.                 try {

  1385.                     fDescriptor->connect_port(fHandle, pData->audioIn.ports[0].rindex, fAudioInBuffers[0]);

  1386.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port audio input #1");

  1387. 

  1388.                 try {

  1389.                     fDescriptor->connect_port(fHandle2, pData->audioIn.ports[1].rindex, fAudioInBuffers[1]);

  1390.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port audio input #2");

  1391.             }

  1392. 

  1393.             if (pData->audioOut.count > 0)

  1394.             {

  1395.                 CARLA_ASSERT(pData->audioOut.count == 2);

  1396.                 CARLA_ASSERT(fAudioOutBuffers[0] != nullptr);

  1397.                 CARLA_ASSERT(fAudioOutBuffers[1] != nullptr);

  1398. 

  1399.                 try {

  1400.                     fDescriptor->connect_port(fHandle, pData->audioOut.ports[0].rindex, fAudioOutBuffers[0]);

  1401.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port audio output #1");

  1402. 

  1403.                 try {

  1404.                     fDescriptor->connect_port(fHandle2, pData->audioOut.ports[1].rindex, fAudioOutBuffers[1]);

  1405.                 } CARLA_SAFE_EXCEPTION("LADSPA connect_port audio output #2");

  1406.             }

  1407.         }

  1408. 

  1409.         carla_debug("LadspaPlugin::bufferSizeChanged(%i) - end", newBufferSize);

  1410.     }

  1411. 

  1412.     void sampleRateChanged(const double newSampleRate) override

  1413.     {

  1414.         CARLA_ASSERT_INT(newSampleRate > 0.0, newSampleRate);

  1415.         carla_debug("LadspaPlugin::sampleRateChanged(%g) - start", newSampleRate);

  1416. 

  1417.         // TODO

  1418.         (void)newSampleRate;

  1419. 

  1420.         carla_debug("LadspaPlugin::sampleRateChanged(%g) - end", newSampleRate);

  1421.     }

  1422. 

  1423.     // -------------------------------------------------------------------

  1424.     // Plugin buffers

  1425. 

  1426.     void clearBuffers() noexcept override

  1427.     {

  1428.         carla_debug("LadspaPlugin::clearBuffers() - start");

  1429. 

  1430.         if (fAudioInBuffers != nullptr)

  1431.         {

  1432.             for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1433.             {

  1434.                 if (fAudioInBuffers[i] != nullptr)

  1435.                 {

  1436.                     delete[] fAudioInBuffers[i];

  1437.                     fAudioInBuffers[i] = nullptr;

  1438.                 }

  1439.             }

  1440. 

  1441.             delete[] fAudioInBuffers;

  1442.             fAudioInBuffers = nullptr;

  1443.         }

  1444. 

  1445.         if (fAudioOutBuffers != nullptr)

  1446.         {

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

  1448.             {

  1449.                 if (fAudioOutBuffers[i] != nullptr)

  1450.                 {

  1451.                     delete[] fAudioOutBuffers[i];

  1452.                     fAudioOutBuffers[i] = nullptr;

  1453.                 }

  1454.             }

  1455. 

  1456.             delete[] fAudioOutBuffers;

  1457.             fAudioOutBuffers = nullptr;

  1458.         }

  1459. 

  1460.         if (fParamBuffers != nullptr)

  1461.         {

  1462.             delete[] fParamBuffers;

  1463.             fParamBuffers = nullptr;

  1464.         }

  1465. 

  1466.         CarlaPlugin::clearBuffers();

  1467. 

  1468.         carla_debug("LadspaPlugin::clearBuffers() - end");

  1469.     }

  1470. 

  1471.     // -------------------------------------------------------------------

  1472. 

  1473.     const void* getExtraStuff() const noexcept override

  1474.     {

  1475.         return fRdfDescriptor;

  1476.     }

  1477. 

  1478.     bool init(const char* const filename, const char* const name, const char* const label, const LADSPA_RDF_Descriptor* const rdfDescriptor)

  1479.     {

  1480.         CARLA_SAFE_ASSERT_RETURN(pData->engine != nullptr, false);

  1481. 

  1482.         // ---------------------------------------------------------------

  1483.         // first checks

  1484. 

  1485.         if (pData->client != nullptr)

  1486.         {

  1487.             pData->engine->setLastError("Plugin client is already registered");

  1488.             return false;

  1489.         }

  1490. 

  1491.         if (filename == nullptr || filename[0] == '\0')

  1492.         {

  1493.             pData->engine->setLastError("null filename");

  1494.             return false;

  1495.         }

  1496. 

  1497.         if (label == nullptr || label[0] == '\0')

  1498.         {

  1499.             pData->engine->setLastError("null label");

  1500.             return false;

  1501.         }

  1502. 

  1503.         // ---------------------------------------------------------------

  1504.         // open DLL

  1505. 

  1506.         if (! pData->libOpen(filename))

  1507.         {

  1508.             pData->engine->setLastError(pData->libError(filename));

  1509.             return false;

  1510.         }

  1511. 

  1512.         // ---------------------------------------------------------------

  1513.         // get DLL main entry

  1514. 

  1515.         const LADSPA_Descriptor_Function descFn = (LADSPA_Descriptor_Function)pData->libSymbol("ladspa_descriptor");

  1516. 

  1517.         if (descFn == nullptr)

  1518.         {

  1519.             pData->engine->setLastError("Could not find the LASDPA Descriptor in the plugin library");

  1520.             return false;

  1521.         }

  1522. 

  1523.         // ---------------------------------------------------------------

  1524.         // get descriptor that matches label

  1525. 

  1526.         ulong i = 0;

  1527. 

  1528.         for (;;)

  1529.         {

  1530.             try {

  1531.                 fDescriptor = descFn(i++);

  1532.             }

  1533.             catch(...) {

  1534.                 carla_stderr2("Caught exception when trying to get LADSPA descriptor");

  1535.                 fDescriptor = nullptr;

  1536.                 break;

  1537.             }

  1538. 

  1539.             if (fDescriptor == nullptr)

  1540.                 break;

  1541. 

  1542.             if (fDescriptor->Label == nullptr || fDescriptor->Label[0] == '\0')

  1543.             {

  1544.                 carla_stderr2("WARNING - Got an invalid label, will not use this plugin");

  1545.                 fDescriptor = nullptr;

  1546.                 break;

  1547.             }

  1548.             if (fDescriptor->run == nullptr)

  1549.             {

  1550.                 carla_stderr2("WARNING - Plugin has no run, cannot use it");

  1551.                 fDescriptor = nullptr;

  1552.                 break;

  1553.             }

  1554. 

  1555.             if (std::strcmp(fDescriptor->Label, label) == 0)

  1556.                 break;

  1557.         }

  1558. 

  1559.         if (fDescriptor == nullptr)

  1560.         {

  1561.             pData->engine->setLastError("Could not find the requested plugin label in the plugin library");

  1562.             return false;

  1563.         }

  1564. 

  1565.         // ---------------------------------------------------------------

  1566.         // get info

  1567. 

  1568.         if (is_ladspa_rdf_descriptor_valid(rdfDescriptor, fDescriptor))

  1569.             fRdfDescriptor = ladspa_rdf_dup(rdfDescriptor);

  1570. 

  1571.         if (name != nullptr && name[0] != '\0')

  1572.             pData->name = pData->engine->getUniquePluginName(name);

  1573.         else if (fRdfDescriptor != nullptr && fRdfDescriptor->Title != nullptr && fRdfDescriptor->Title[0] != '\0')

  1574.             pData->name = pData->engine->getUniquePluginName(fRdfDescriptor->Title);

  1575.         else if (fDescriptor->Name != nullptr && fDescriptor->Name[0] != '\0')

  1576.             pData->name = pData->engine->getUniquePluginName(fDescriptor->Name);

  1577.         else

  1578.             pData->name = pData->engine->getUniquePluginName(fDescriptor->Label);

  1579. 

  1580.         pData->filename = carla_strdup(filename);

  1581. 

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

  1583.         // register client

  1584. 

  1585.         pData->client = pData->engine->addClient(this);

  1586. 

  1587.         if (pData->client == nullptr || ! pData->client->isOk())

  1588.         {

  1589.             pData->engine->setLastError("Failed to register plugin client");

  1590.             return false;

  1591.         }

  1592. 

  1593.         // ---------------------------------------------------------------

  1594.         // initialize plugin

  1595. 

  1596.         try {

  1597.             fHandle = fDescriptor->instantiate(fDescriptor, static_cast<ulong>(pData->engine->getSampleRate()));

  1598.         } CARLA_SAFE_EXCEPTION("LADSPA instantiate");

  1599. 

  1600.         if (fHandle == nullptr)

  1601.         {

  1602.             pData->engine->setLastError("Plugin failed to initialize");

  1603.             return false;

  1604.         }

  1605. 

  1606.         // ---------------------------------------------------------------

  1607.         // set default options

  1608. 

  1609. #ifdef __USE_GNU

  1610.         const bool isDssiVst(strcasestr(pData->filename, "dssi-vst") != nullptr);

  1611. #else

  1612.         const bool isDssiVst(std::strstr(pData->filename, "dssi-vst") != nullptr);

  1613. #endif

  1614. 

  1615.         pData->options = 0x0;

  1616. 

  1617.         if (fLatencyIndex >= 0 || isDssiVst)

  1618.             pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;

  1619. 

  1620.         if (pData->engine->getOptions().forceStereo)

  1621.             pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  1622. 

  1623.         return true;

  1624.     }

  1625. 

  1626.     // -------------------------------------------------------------------

  1627. 

  1628. private:

  1629.     LADSPA_Handle fHandle;

  1630.     LADSPA_Handle fHandle2;

  1631.     const LADSPA_Descriptor*     fDescriptor;

  1632.     const LADSPA_RDF_Descriptor* fRdfDescriptor;

  1633. 

  1634.     float** fAudioInBuffers;

  1635.     float** fAudioOutBuffers;

  1636.     float*  fParamBuffers;

  1637. 

  1638.     bool    fLatencyChanged;

  1639.     int32_t fLatencyIndex; // -1 if invalid

  1640. 

  1641.     // -------------------------------------------------------------------

  1642. 

  1643.     uint32_t getSafePortCount() const noexcept

  1644.     {

  1645.         if (fDescriptor->PortCount == 0)

  1646.             return 0;

  1647. 

  1648.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->PortDescriptors != nullptr, 0);

  1649.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->PortRangeHints != nullptr, 0);

  1650.         CARLA_SAFE_ASSERT_RETURN(fDescriptor->PortNames != nullptr, 0);

  1651. 

  1652.         return static_cast<uint32_t>(fDescriptor->PortCount);

  1653.     }

  1654. 

  1655.     bool getSeparatedParameterNameOrUnit(const char* const paramName, char* const strBuf, const bool wantName) const noexcept

  1656.     {

  1657.         if (_getSeparatedParameterNameOrUnitImpl(paramName, strBuf, wantName, true))

  1658.             return true;

  1659.         if (_getSeparatedParameterNameOrUnitImpl(paramName, strBuf, wantName, false))

  1660.             return true;

  1661.         return false;

  1662.     }

  1663. 

  1664.     bool _getSeparatedParameterNameOrUnitImpl(const char* const paramName, char* const strBuf, const bool wantName, const bool useBracket) const noexcept

  1665.     {

  1666.         const char* const sepBracketStart(std::strstr(paramName, useBracket ? " [" : " ("));

  1667. 

  1668.         if (sepBracketStart == nullptr)

  1669.             return false;

  1670. 

  1671.         const char* const sepBracketEnd(std::strstr(sepBracketStart, useBracket ? "]" : ")"));

  1672. 

  1673.         if (sepBracketEnd == nullptr)

  1674.             return false;

  1675. 

  1676.         const size_t unitSize(static_cast<size_t>(sepBracketEnd-sepBracketStart-2));

  1677. 

  1678.         if (unitSize > 7) // very unlikely to have such big unit

  1679.             return false;

  1680. 

  1681.         const size_t sepIndex(std::strlen(paramName)-unitSize-3);

  1682. 

  1683.         // just in case

  1684.         if (sepIndex > STR_MAX)

  1685.             return false;

  1686. 

  1687.         if (wantName)

  1688.         {

  1689.             std::strncpy(strBuf, paramName, sepIndex);

  1690.             strBuf[sepIndex] = '\0';

  1691.         }

  1692.         else

  1693.         {

  1694.             std::strncpy(strBuf, paramName+(sepIndex+2), unitSize);

  1695.             strBuf[unitSize] = '\0';

  1696.         }

  1697. 

  1698.         return true;

  1699.     }

  1700. 

  1701.     // -------------------------------------------------------------------

  1702. 

  1703.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(LadspaPlugin)

  1704. };

  1705. 

  1706. CARLA_BACKEND_END_NAMESPACE

  1707. 

  1708. #endif // WANT_LADSPA

  1709. 

  1710. // -------------------------------------------------------------------------------------------------------------------

  1711. 

  1712. CARLA_BACKEND_START_NAMESPACE

  1713. 

  1714. CarlaPlugin* CarlaPlugin::newLADSPA(const Initializer& init, const LADSPA_RDF_Descriptor* const rdfDescriptor)

  1715. {

  1716.     carla_debug("CarlaPlugin::newLADSPA({%p, \"%s\", \"%s\", \"%s\", " P_INT64 "}, %p)", init.engine, init.filename, init.name, init.label, init.uniqueId, rdfDescriptor);

  1717. 

  1718. #ifdef WANT_LADSPA

  1719.     LadspaPlugin* const plugin(new LadspaPlugin(init.engine, init.id));

  1720. 

  1721.     if (! plugin->init(init.filename, init.name, init.label, rdfDescriptor))

  1722.     {

  1723.         delete plugin;

  1724.         return nullptr;

  1725.     }

  1726. 

  1727.     plugin->reload();

  1728. 

  1729.     if (init.engine->getProccessMode() == ENGINE_PROCESS_MODE_CONTINUOUS_RACK && ! plugin->canRunInRack())

  1730.     {

  1731.         init.engine->setLastError("Carla's rack mode can only work with Mono or Stereo LADSPA plugins, sorry!");

  1732.         delete plugin;

  1733.         return nullptr;

  1734.     }

  1735. 

  1736.     return plugin;

  1737. #else

  1738.     init.engine->setLastError("LADSPA support not available");

  1739.     return nullptr;

  1740. #endif

  1741. }

  1742. 

  1743. CARLA_BACKEND_END_NAMESPACE

  1744. 

  1745. // -------------------------------------------------------------------------------------------------------------------