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Collection of tools useful for audio production
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Cadence/c++/carla-backend/ladspa.cpp

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  1. /*

  2.  * Carla Backend

  3.  * Copyright (C) 2011-2012 Filipe Coelho <falktx@falktx.com>

  4.  *

  5.  * This program is free software; you can redistribute it and/or modify

  6.  * it under the terms of the GNU General Public License as published by

  7.  * the Free Software Foundation; either version 2 of the License, or

  8.  * 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 COPYING file

  16.  */

  17. 

  18. #include "carla_plugin.h"

  19. 

  20. #ifdef WANT_LADSPA

  21. 

  22. #include "carla_ladspa.h"

  23. 

  24. CARLA_BACKEND_START_NAMESPACE

  25. 

  26. /*!

  27.  * @defgroup CarlaBackendLadspaPlugin Carla Backend LADSPA Plugin

  28.  *

  29.  * The Carla Backend LADSPA Plugin.\n

  30.  * http://www.ladspa.org/

  31.  * @{

  32.  */

  33. 

  34. class LadspaPlugin : public CarlaPlugin

  35. {

  36. public:

  37.     LadspaPlugin(CarlaEngine* const engine, const unsigned short id)

  38.         : CarlaPlugin(engine, id)

  39.     {

  40.         qDebug("LadspaPlugin::LadspaPlugin()");

  41. 

  42.         m_type = PLUGIN_LADSPA;

  43. 

  44.         handle = h2 = nullptr;

  45.         descriptor  = nullptr;

  46.         rdf_descriptor = nullptr;

  47. 

  48.         paramBuffers = nullptr;

  49.     }

  50. 

  51.     ~LadspaPlugin()

  52.     {

  53.         qDebug("LadspaPlugin::~LadspaPlugin()");

  54. 

  55.         if (descriptor)

  56.         {

  57.             if (descriptor->deactivate && m_activeBefore)

  58.             {

  59.                 if (handle)

  60.                     descriptor->deactivate(handle);

  61.                 if (h2)

  62.                     descriptor->deactivate(h2);

  63.             }

  64. 

  65.             if (descriptor->cleanup)

  66.             {

  67.                 if (handle)

  68.                     descriptor->cleanup(handle);

  69.                 if (h2)

  70.                     descriptor->cleanup(h2);

  71.             }

  72.         }

  73. 

  74.         if (rdf_descriptor)

  75.             delete rdf_descriptor;

  76.     }

  77. 

  78.     // -------------------------------------------------------------------

  79.     // Information (base)

  80. 

  81.     PluginCategory category()

  82.     {

  83.         if (rdf_descriptor)

  84.         {

  85.             const LADSPA_Properties category = rdf_descriptor->Type;

  86. 

  87.             // Specific Types

  88.             if (category & (LADSPA_CLASS_DELAY|LADSPA_CLASS_REVERB))

  89.                 return PLUGIN_CATEGORY_DELAY;

  90.             if (category & (LADSPA_CLASS_PHASER|LADSPA_CLASS_FLANGER|LADSPA_CLASS_CHORUS))

  91.                 return PLUGIN_CATEGORY_MODULATOR;

  92.             if (category & (LADSPA_CLASS_AMPLIFIER))

  93.                 return PLUGIN_CATEGORY_DYNAMICS;

  94.             if (category & (LADSPA_CLASS_UTILITY|LADSPA_CLASS_SPECTRAL|LADSPA_CLASS_FREQUENCY_METER))

  95.                 return PLUGIN_CATEGORY_UTILITY;

  96. 

  97.             // Pre-set LADSPA Types

  98.             if (LADSPA_IS_PLUGIN_DYNAMICS(category))

  99.                 return PLUGIN_CATEGORY_DYNAMICS;

  100.             if (LADSPA_IS_PLUGIN_AMPLITUDE(category))

  101.                 return PLUGIN_CATEGORY_MODULATOR;

  102.             if (LADSPA_IS_PLUGIN_EQ(category))

  103.                 return PLUGIN_CATEGORY_EQ;

  104.             if (LADSPA_IS_PLUGIN_FILTER(category))

  105.                 return PLUGIN_CATEGORY_FILTER;

  106.             if (LADSPA_IS_PLUGIN_FREQUENCY(category))

  107.                 return PLUGIN_CATEGORY_UTILITY;

  108.             if (LADSPA_IS_PLUGIN_SIMULATOR(category))

  109.                 return PLUGIN_CATEGORY_OTHER;

  110.             if (LADSPA_IS_PLUGIN_TIME(category))

  111.                 return PLUGIN_CATEGORY_DELAY;

  112.             if (LADSPA_IS_PLUGIN_GENERATOR(category))

  113.                 return PLUGIN_CATEGORY_SYNTH;

  114.         }

  115. 

  116.         return getPluginCategoryFromName(m_name);

  117.     }

  118. 

  119.     long uniqueId()

  120.     {

  121.         CARLA_ASSERT(descriptor);

  122. 

  123.         return descriptor->UniqueID;

  124.     }

  125. 

  126.     // -------------------------------------------------------------------

  127.     // Information (count)

  128. 

  129.     uint32_t parameterScalePointCount(const uint32_t parameterId)

  130.     {

  131.         CARLA_ASSERT(parameterId < param.count);

  132. 

  133.         int32_t rindex = param.data[parameterId].rindex;

  134. 

  135.         if (rdf_descriptor && rindex < (int32_t)rdf_descriptor->PortCount)

  136.         {

  137.             const LADSPA_RDF_Port* const port = &rdf_descriptor->Ports[rindex];

  138. 

  139.             if (port)

  140.                 return port->ScalePointCount;

  141.         }

  142. 

  143.         return 0;

  144.     }

  145. 

  146.     // -------------------------------------------------------------------

  147.     // Information (per-plugin data)

  148. 

  149.     double getParameterValue(const uint32_t parameterId)

  150.     {

  151.         CARLA_ASSERT(parameterId < param.count);

  152. 

  153.         return paramBuffers[parameterId];

  154.     }

  155. 

  156.     double getParameterScalePointValue(const uint32_t parameterId, const uint32_t scalePointId)

  157.     {

  158.         CARLA_ASSERT(parameterId < param.count);

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

  160. 

  161.         int32_t rindex = param.data[parameterId].rindex;

  162. 

  163.         if (rdf_descriptor && rindex < (int32_t)rdf_descriptor->PortCount)

  164.         {

  165.             const LADSPA_RDF_Port* const port = &rdf_descriptor->Ports[rindex];

  166. 

  167.             if (port && scalePointId < port->ScalePointCount)

  168.             {

  169.                 const LADSPA_RDF_ScalePoint* const scalePoint = &port->ScalePoints[scalePointId];

  170. 

  171.                 if (scalePoint)

  172.                     return scalePoint->Value;

  173.             }

  174.         }

  175. 

  176.         return 0.0;

  177.     }

  178. 

  179.     void getLabel(char* const strBuf)

  180.     {

  181.         CARLA_ASSERT(descriptor);

  182. 

  183.         if (descriptor && descriptor->Label)

  184.             strncpy(strBuf, descriptor->Label, STR_MAX);

  185.         else

  186.             CarlaPlugin::getLabel(strBuf);

  187.     }

  188. 

  189.     void getMaker(char* const strBuf)

  190.     {

  191.         CARLA_ASSERT(descriptor);

  192. 

  193.         if (rdf_descriptor && rdf_descriptor->Creator)

  194.             strncpy(strBuf, rdf_descriptor->Creator, STR_MAX);

  195.         else if (descriptor && descriptor->Maker)

  196.             strncpy(strBuf, descriptor->Maker, STR_MAX);

  197.         else

  198.             CarlaPlugin::getMaker(strBuf);

  199.     }

  200. 

  201.     void getCopyright(char* const strBuf)

  202.     {

  203.         CARLA_ASSERT(descriptor);

  204. 

  205.         if (descriptor && descriptor->Copyright)

  206.             strncpy(strBuf, descriptor->Copyright, STR_MAX);

  207.         else

  208.             CarlaPlugin::getCopyright(strBuf);

  209.     }

  210. 

  211.     void getRealName(char* const strBuf)

  212.     {

  213.         CARLA_ASSERT(descriptor);

  214. 

  215.         if (rdf_descriptor && rdf_descriptor->Title)

  216.             strncpy(strBuf, rdf_descriptor->Title, STR_MAX);

  217.         else if (descriptor && descriptor->Name)

  218.             strncpy(strBuf, descriptor->Name, STR_MAX);

  219.         else

  220.             CarlaPlugin::getRealName(strBuf);

  221.     }

  222. 

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

  224.     {

  225.         CARLA_ASSERT(descriptor);

  226.         CARLA_ASSERT(parameterId < param.count);

  227. 

  228.         int32_t rindex = param.data[parameterId].rindex;

  229. 

  230.         if (descriptor && rindex < (int32_t)descriptor->PortCount)

  231.             strncpy(strBuf, descriptor->PortNames[rindex], STR_MAX);

  232.         else

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

  234.     }

  235. 

  236.     void getParameterSymbol(const uint32_t parameterId, char* const strBuf)

  237.     {

  238.         CARLA_ASSERT(parameterId < param.count);

  239. 

  240.         int32_t rindex = param.data[parameterId].rindex;

  241. 

  242.         if (rdf_descriptor && rindex < (int32_t)rdf_descriptor->PortCount)

  243.         {

  244.             const LADSPA_RDF_Port* const port = &rdf_descriptor->Ports[rindex];

  245. 

  246.             if (LADSPA_PORT_HAS_LABEL(port->Hints) && port->Label)

  247.             {

  248.                 strncpy(strBuf, port->Label, STR_MAX);

  249.                 return;

  250.             }

  251.         }

  252. 

  253.         CarlaPlugin::getParameterSymbol(parameterId, strBuf);

  254.     }

  255. 

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

  257.     {

  258.         CARLA_ASSERT(parameterId < param.count);

  259. 

  260.         int32_t rindex = param.data[parameterId].rindex;

  261. 

  262.         if (rdf_descriptor && rindex < (int32_t)rdf_descriptor->PortCount)

  263.         {

  264.             const LADSPA_RDF_Port* const port = &rdf_descriptor->Ports[rindex];

  265. 

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

  267.             {

  268.                 switch (port->Unit)

  269.                 {

  270.                 case LADSPA_UNIT_DB:

  271.                     strncpy(strBuf, "dB", STR_MAX);

  272.                     return;

  273.                 case LADSPA_UNIT_COEF:

  274.                     strncpy(strBuf, "(coef)", STR_MAX);

  275.                     return;

  276.                 case LADSPA_UNIT_HZ:

  277.                     strncpy(strBuf, "Hz", STR_MAX);

  278.                     return;

  279.                 case LADSPA_UNIT_S:

  280.                     strncpy(strBuf, "s", STR_MAX);

  281.                     return;

  282.                 case LADSPA_UNIT_MS:

  283.                     strncpy(strBuf, "ms", STR_MAX);

  284.                     return;

  285.                 case LADSPA_UNIT_MIN:

  286.                     strncpy(strBuf, "min", STR_MAX);

  287.                     return;

  288.                 }

  289.             }

  290.         }

  291. 

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

  293.     }

  294. 

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

  296.     {

  297.         CARLA_ASSERT(parameterId < param.count);

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

  299. 

  300.         int32_t rindex = param.data[parameterId].rindex;

  301. 

  302.         if (rdf_descriptor && rindex < (int32_t)rdf_descriptor->PortCount)

  303.         {

  304.             const LADSPA_RDF_Port* const port = &rdf_descriptor->Ports[rindex];

  305. 

  306.             if (port && scalePointId < port->ScalePointCount)

  307.             {

  308.                 const LADSPA_RDF_ScalePoint* const scalePoint = &port->ScalePoints[scalePointId];

  309. 

  310.                 if (scalePoint && scalePoint->Label)

  311.                 {

  312.                     strncpy(strBuf, scalePoint->Label, STR_MAX);

  313.                     return;

  314.                 }

  315.             }

  316.         }

  317. 

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

  319.     }

  320. 

  321.     // -------------------------------------------------------------------

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

  323. 

  324.     void setParameterValue(const uint32_t parameterId, double value, const bool sendGui, const bool sendOsc, const bool sendCallback)

  325.     {

  326.         CARLA_ASSERT(parameterId < param.count);

  327. 

  328.         paramBuffers[parameterId] = fixParameterValue(value, param.ranges[parameterId]);

  329. 

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

  331.     }

  332. 

  333.     // -------------------------------------------------------------------

  334.     // Plugin state

  335. 

  336.     void reload()

  337.     {

  338.         qDebug("LadspaPlugin::reload() - start");

  339.         CARLA_ASSERT(descriptor);

  340. 

  341.         // Safely disable plugin for reload

  342.         const ScopedDisabler m(this);

  343. 

  344.         if (x_client->isActive())

  345.             x_client->deactivate();

  346. 

  347.         // Remove client ports

  348.         removeClientPorts();

  349. 

  350.         // Delete old data

  351.         deleteBuffers();

  352. 

  353.         uint32_t aIns, aOuts, params, j;

  354.         aIns = aOuts = params = 0;

  355. 

  356.         const double sampleRate = x_engine->getSampleRate();

  357.         const unsigned long portCount = descriptor->PortCount;

  358. 

  359.         bool forcedStereoIn, forcedStereoOut;

  360.         forcedStereoIn = forcedStereoOut = false;

  361. 

  362.         for (unsigned long i=0; i < portCount; i++)

  363.         {

  364.             const LADSPA_PortDescriptor portType = descriptor->PortDescriptors[i];

  365. 

  366.             if (LADSPA_IS_PORT_AUDIO(portType))

  367.             {

  368.                 if (LADSPA_IS_PORT_INPUT(portType))

  369.                     aIns += 1;

  370.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  371.                     aOuts += 1;

  372.             }

  373.             else if (LADSPA_IS_PORT_CONTROL(portType))

  374.                 params += 1;

  375.         }

  376. 

  377. #ifndef BUILD_BRIDGE

  378.         if (carlaOptions.forceStereo && (aIns == 1 || aOuts == 1) && ! h2)

  379.         {

  380.             h2 = descriptor->instantiate(descriptor, sampleRate);

  381. 

  382.             if (aIns == 1)

  383.             {

  384.                 aIns = 2;

  385.                 forcedStereoIn = true;

  386.             }

  387. 

  388.             if (aOuts == 1)

  389.             {

  390.                 aOuts = 2;

  391.                 forcedStereoOut = true;

  392.             }

  393.         }

  394. #endif

  395. 

  396.         if (aIns > 0)

  397.         {

  398.             aIn.ports    = new CarlaEngineAudioPort*[aIns];

  399.             aIn.rindexes = new uint32_t[aIns];

  400.         }

  401. 

  402.         if (aOuts > 0)

  403.         {

  404.             aOut.ports    = new CarlaEngineAudioPort*[aOuts];

  405.             aOut.rindexes = new uint32_t[aOuts];

  406.         }

  407. 

  408.         if (params > 0)

  409.         {

  410.             param.data   = new ParameterData[params];

  411.             param.ranges = new ParameterRanges[params];

  412.             paramBuffers = new float[params];

  413.         }

  414. 

  415.         const int portNameSize = CarlaEngine::maxPortNameSize() - 2;

  416.         char portName[portNameSize];

  417.         bool needsCtrlIn  = false;

  418.         bool needsCtrlOut = false;

  419. 

  420.         for (unsigned long i=0; i < portCount; i++)

  421.         {

  422.             const LADSPA_PortDescriptor portType = descriptor->PortDescriptors[i];

  423.             const LADSPA_PortRangeHint portHints = descriptor->PortRangeHints[i];

  424.             const bool hasPortRDF = (rdf_descriptor && i < rdf_descriptor->PortCount);

  425. 

  426.             if (LADSPA_IS_PORT_AUDIO(portType))

  427.             {

  428. #ifndef BUILD_BRIDGE

  429.                 if (carlaOptions.processMode != PROCESS_MODE_MULTIPLE_CLIENTS)

  430.                 {

  431.                     strcpy(portName, m_name);

  432.                     strcat(portName, ":");

  433.                     strncat(portName, descriptor->PortNames[i], portNameSize/2);

  434.                 }

  435.                 else

  436. #endif

  437.                     strncpy(portName, descriptor->PortNames[i], portNameSize);

  438. 

  439.                 if (LADSPA_IS_PORT_INPUT(portType))

  440.                 {

  441.                     j = aIn.count++;

  442.                     aIn.ports[j]    = (CarlaEngineAudioPort*)x_client->addPort(CarlaEnginePortTypeAudio, portName, true);

  443.                     aIn.rindexes[j] = i;

  444. 

  445.                     if (forcedStereoIn)

  446.                     {

  447.                         strcat(portName, "_");

  448.                         aIn.ports[1]    = (CarlaEngineAudioPort*)x_client->addPort(CarlaEnginePortTypeAudio, portName, true);

  449.                         aIn.rindexes[1] = i;

  450.                     }

  451.                 }

  452.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  453.                 {

  454.                     j = aOut.count++;

  455.                     aOut.ports[j]    = (CarlaEngineAudioPort*)x_client->addPort(CarlaEnginePortTypeAudio, portName, false);

  456.                     aOut.rindexes[j] = i;

  457.                     needsCtrlIn = true;

  458. 

  459.                     if (forcedStereoOut)

  460.                     {

  461.                         strcat(portName, "_");

  462.                         aOut.ports[1]    = (CarlaEngineAudioPort*)x_client->addPort(CarlaEnginePortTypeAudio, portName, false);

  463.                         aOut.rindexes[1] = i;

  464.                     }

  465.                 }

  466.                 else

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

  468.             }

  469.             else if (LADSPA_IS_PORT_CONTROL(portType))

  470.             {

  471.                 j = param.count++;

  472.                 param.data[j].index  = j;

  473.                 param.data[j].rindex = i;

  474.                 param.data[j].hints  = 0;

  475.                 param.data[j].midiChannel = 0;

  476.                 param.data[j].midiCC = -1;

  477. 

  478.                 double min, max, def, step, stepSmall, stepLarge;

  479. 

  480.                 // min value

  481.                 if (LADSPA_IS_HINT_BOUNDED_BELOW(portHints.HintDescriptor))

  482.                     min = portHints.LowerBound;

  483.                 else

  484.                     min = 0.0;

  485. 

  486.                 // max value

  487.                 if (LADSPA_IS_HINT_BOUNDED_ABOVE(portHints.HintDescriptor))

  488.                     max = portHints.UpperBound;

  489.                 else

  490.                     max = 1.0;

  491. 

  492.                 if (min > max)

  493.                     max = min;

  494.                 else if (max < min)

  495.                     min = max;

  496. 

  497.                 if (max - min == 0.0)

  498.                 {

  499.                     qWarning("Broken plugin parameter: max - min == 0");

  500.                     max = min + 0.1;

  501.                 }

  502. 

  503.                 // default value

  504.                 if (hasPortRDF && LADSPA_PORT_HAS_DEFAULT(rdf_descriptor->Ports[i].Hints))

  505.                     def = rdf_descriptor->Ports[i].Default;

  506.                 else

  507.                     def = get_default_ladspa_port_value(portHints.HintDescriptor, min, max);

  508. 

  509.                 if (def < min)

  510.                     def = min;

  511.                 else if (def > max)

  512.                     def = max;

  513. 

  514.                 if (LADSPA_IS_HINT_SAMPLE_RATE(portHints.HintDescriptor))

  515.                 {

  516.                     min *= sampleRate;

  517.                     max *= sampleRate;

  518.                     def *= sampleRate;

  519.                     param.data[j].hints |= PARAMETER_USES_SAMPLERATE;

  520.                 }

  521. 

  522.                 if (LADSPA_IS_HINT_TOGGLED(portHints.HintDescriptor))

  523.                 {

  524.                     step = max - min;

  525.                     stepSmall = step;

  526.                     stepLarge = step;

  527.                     param.data[j].hints |= PARAMETER_IS_BOOLEAN;

  528.                 }

  529.                 else if (LADSPA_IS_HINT_INTEGER(portHints.HintDescriptor))

  530.                 {

  531.                     step = 1.0;

  532.                     stepSmall = 1.0;

  533.                     stepLarge = 10.0;

  534.                     param.data[j].hints |= PARAMETER_IS_INTEGER;

  535.                 }

  536.                 else

  537.                 {

  538.                     double range = max - min;

  539.                     step = range/100.0;

  540.                     stepSmall = range/1000.0;

  541.                     stepLarge = range/10.0;

  542.                 }

  543. 

  544.                 if (LADSPA_IS_PORT_INPUT(portType))

  545.                 {

  546.                     param.data[j].type   = PARAMETER_INPUT;

  547.                     param.data[j].hints |= PARAMETER_IS_ENABLED;

  548.                     param.data[j].hints |= PARAMETER_IS_AUTOMABLE;

  549.                     needsCtrlIn = true;

  550.                 }

  551.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  552.                 {

  553.                     if (strcmp(descriptor->PortNames[i], "latency") == 0 || strcmp(descriptor->PortNames[i], "_latency") == 0)

  554.                     {

  555.                         min = 0.0;

  556.                         max = sampleRate;

  557.                         def = 0.0;

  558.                         step = 1.0;

  559.                         stepSmall = 1.0;

  560.                         stepLarge = 1.0;

  561. 

  562.                         param.data[j].type  = PARAMETER_LATENCY;

  563.                         param.data[j].hints = 0;

  564.                     }

  565.                     else if (strcmp(descriptor->PortNames[i], "_sample-rate") == 0)

  566.                     {

  567.                         def = sampleRate;

  568.                         step = 1.0;

  569.                         stepSmall = 1.0;

  570.                         stepLarge = 1.0;

  571. 

  572.                         param.data[j].type  = PARAMETER_SAMPLE_RATE;

  573.                         param.data[j].hints = 0;

  574.                     }

  575.                     else

  576.                     {

  577.                         param.data[j].type   = PARAMETER_OUTPUT;

  578.                         param.data[j].hints |= PARAMETER_IS_ENABLED;

  579.                         param.data[j].hints |= PARAMETER_IS_AUTOMABLE;

  580.                         needsCtrlOut = true;

  581.                     }

  582.                 }

  583.                 else

  584.                 {

  585.                     param.data[j].type = PARAMETER_UNKNOWN;

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

  587.                 }

  588. 

  589.                 // extra parameter hints

  590.                 if (LADSPA_IS_HINT_LOGARITHMIC(portHints.HintDescriptor))

  591.                     param.data[j].hints |= PARAMETER_IS_LOGARITHMIC;

  592. 

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

  594.                 if (hasPortRDF && rdf_descriptor->Ports[i].ScalePointCount > 1)

  595.                     param.data[j].hints |= PARAMETER_USES_SCALEPOINTS;

  596. 

  597.                 param.ranges[j].min = min;

  598.                 param.ranges[j].max = max;

  599.                 param.ranges[j].def = def;

  600.                 param.ranges[j].step = step;

  601.                 param.ranges[j].stepSmall = stepSmall;

  602.                 param.ranges[j].stepLarge = stepLarge;

  603. 

  604.                 // Start parameters in their default values

  605.                 paramBuffers[j] = def;

  606. 

  607.                 descriptor->connect_port(handle, i, &paramBuffers[j]);

  608.                 if (h2) descriptor->connect_port(h2, i, &paramBuffers[j]);

  609.             }

  610.             else

  611.             {

  612.                 // Not Audio or Control

  613.                 qCritical("ERROR - Got a broken Port (neither Audio or Control)");

  614.                 descriptor->connect_port(handle, i, nullptr);

  615.                 if (h2) descriptor->connect_port(h2, i, nullptr);

  616.             }

  617.         }

  618. 

  619.         if (needsCtrlIn)

  620.         {

  621. #ifndef BUILD_BRIDGE

  622.             if (carlaOptions.processMode != PROCESS_MODE_MULTIPLE_CLIENTS)

  623.             {

  624.                 strcpy(portName, m_name);

  625.                 strcat(portName, ":control-in");

  626.             }

  627.             else

  628. #endif

  629.                 strcpy(portName, "control-in");

  630. 

  631.             param.portCin = (CarlaEngineControlPort*)x_client->addPort(CarlaEnginePortTypeControl, portName, true);

  632.         }

  633. 

  634.         if (needsCtrlOut)

  635.         {

  636. #ifndef BUILD_BRIDGE

  637.             if (carlaOptions.processMode != PROCESS_MODE_MULTIPLE_CLIENTS)

  638.             {

  639.                 strcpy(portName, m_name);

  640.                 strcat(portName, ":control-out");

  641.             }

  642.             else

  643. #endif

  644.                 strcpy(portName, "control-out");

  645. 

  646.             param.portCout = (CarlaEngineControlPort*)x_client->addPort(CarlaEnginePortTypeControl, portName, false);

  647.         }

  648. 

  649.         aIn.count   = aIns;

  650.         aOut.count  = aOuts;

  651.         param.count = params;

  652. 

  653.         // plugin checks

  654.         m_hints &= ~(PLUGIN_IS_SYNTH | PLUGIN_USES_CHUNKS | PLUGIN_CAN_DRYWET | PLUGIN_CAN_VOLUME | PLUGIN_CAN_BALANCE | PLUGIN_CAN_FORCE_STEREO);

  655. 

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

  657.             m_hints |= PLUGIN_CAN_DRYWET;

  658. 

  659.         if (aOuts > 0)

  660.             m_hints |= PLUGIN_CAN_VOLUME;

  661. 

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

  663.             m_hints |= PLUGIN_CAN_BALANCE;

  664. 

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

  666.             m_hints |= PLUGIN_CAN_FORCE_STEREO;

  667. 

  668.         // check latency

  669.         if (m_hints & PLUGIN_CAN_DRYWET)

  670.         {

  671.             bool hasLatency = false;

  672.             m_latency = 0;

  673. 

  674.             for (uint32_t i=0; i < param.count; i++)

  675.             {

  676.                 if (param.data[i].type == PARAMETER_LATENCY)

  677.                 {

  678.                     // pre-run so plugin can update latency control-port

  679.                     float tmpIn[2][aIns];

  680.                     float tmpOut[2][aOuts];

  681. 

  682.                     for (j=0; j < aIn.count; j++)

  683.                     {

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

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

  686. 

  687.                         if (j == 0 || ! h2)

  688.                             descriptor->connect_port(handle, aIn.rindexes[j], tmpIn[j]);

  689.                     }

  690. 

  691.                     for (j=0; j < aOut.count; j++)

  692.                     {

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

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

  695. 

  696.                         if (j == 0 || ! h2)

  697.                             descriptor->connect_port(handle, aOut.rindexes[j], tmpOut[j]);

  698.                     }

  699. 

  700.                     descriptor->activate(handle);

  701.                     descriptor->run(handle, 2);

  702.                     descriptor->deactivate(handle);

  703. 

  704.                     m_latency = rint(paramBuffers[i]);

  705.                     hasLatency = true;

  706.                     break;

  707.                 }

  708.             }

  709. 

  710.             if (hasLatency)

  711.             {

  712.                 x_client->setLatency(m_latency);

  713.                 recreateLatencyBuffers();

  714.             }

  715.         }

  716. 

  717.         x_client->activate();

  718. 

  719.         qDebug("LadspaPlugin::reload() - end");

  720.     }

  721. 

  722.     // -------------------------------------------------------------------

  723.     // Plugin processing

  724. 

  725.     void process(float** const inBuffer, float** const outBuffer, const uint32_t frames, const uint32_t framesOffset)

  726.     {

  727.         uint32_t i, k;

  728. 

  729.         double aInsPeak[2]  = { 0.0 };

  730.         double aOutsPeak[2] = { 0.0 };

  731. 

  732.         CARLA_PROCESS_CONTINUE_CHECK;

  733. 

  734.         // --------------------------------------------------------------------------------------------------------

  735.         // Input VU

  736. 

  737. #ifndef BUILD_BRIDGE

  738.         if (aIn.count > 0 && carlaOptions.processMode != PROCESS_MODE_CONTINUOUS_RACK)

  739. #else

  740.         if (aIn.count > 0)

  741. #endif

  742.         {

  743.             if (aIn.count == 1)

  744.             {

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

  746.                 {

  747.                     if (abs(inBuffer[0][k]) > aInsPeak[0])

  748.                         aInsPeak[0] = abs(inBuffer[0][k]);

  749.                 }

  750.             }

  751.             else if (aIn.count > 1)

  752.             {

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

  754.                 {

  755.                     if (abs(inBuffer[0][k]) > aInsPeak[0])

  756.                         aInsPeak[0] = abs(inBuffer[0][k]);

  757. 

  758.                     if (abs(inBuffer[1][k]) > aInsPeak[1])

  759.                         aInsPeak[1] = abs(inBuffer[1][k]);

  760.                 }

  761.             }

  762.         }

  763. 

  764.         CARLA_PROCESS_CONTINUE_CHECK;

  765. 

  766.         // --------------------------------------------------------------------------------------------------------

  767.         // Parameters Input [Automation]

  768. 

  769.         if (param.portCin && m_active && m_activeBefore)

  770.         {

  771.             const CarlaEngineControlEvent* cinEvent;

  772.             uint32_t time, nEvents = param.portCin->getEventCount();

  773. 

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

  775.             {

  776.                 cinEvent = param.portCin->getEvent(i);

  777. 

  778.                 if (! cinEvent)

  779.                     continue;

  780. 

  781.                 time = cinEvent->time - framesOffset;

  782. 

  783.                 if (time >= frames)

  784.                     continue;

  785. 

  786.                 // Control change

  787.                 switch (cinEvent->type)

  788.                 {

  789.                 case CarlaEngineEventNull:

  790.                     break;

  791. 

  792.                 case CarlaEngineEventControlChange:

  793.                 {

  794.                     double value;

  795. 

  796.                     // Control backend stuff

  797.                     if (cinEvent->channel == m_ctrlInChannel)

  798.                     {

  799.                         if (MIDI_IS_CONTROL_BREATH_CONTROLLER(cinEvent->controller) && (m_hints & PLUGIN_CAN_DRYWET) > 0)

  800.                         {

  801.                             value = cinEvent->value;

  802.                             setDryWet(value, false, false);

  803.                             postponeEvent(PluginPostEventParameterChange, PARAMETER_DRYWET, 0, value);

  804.                             continue;

  805.                         }

  806. 

  807.                         if (MIDI_IS_CONTROL_CHANNEL_VOLUME(cinEvent->controller) && (m_hints & PLUGIN_CAN_VOLUME) > 0)

  808.                         {

  809.                             value = cinEvent->value*127/100;

  810.                             setVolume(value, false, false);

  811.                             postponeEvent(PluginPostEventParameterChange, PARAMETER_VOLUME, 0, value);

  812.                             continue;

  813.                         }

  814. 

  815.                         if (MIDI_IS_CONTROL_BALANCE(cinEvent->controller) && (m_hints & PLUGIN_CAN_BALANCE) > 0)

  816.                         {

  817.                             double left, right;

  818.                             value = cinEvent->value/0.5 - 1.0;

  819. 

  820.                             if (value < 0.0)

  821.                             {

  822.                                 left  = -1.0;

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

  824.                             }

  825.                             else if (value > 0.0)

  826.                             {

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

  828.                                 right = 1.0;

  829.                             }

  830.                             else

  831.                             {

  832.                                 left  = -1.0;

  833.                                 right = 1.0;

  834.                             }

  835. 

  836.                             setBalanceLeft(left, false, false);

  837.                             setBalanceRight(right, false, false);

  838.                             postponeEvent(PluginPostEventParameterChange, PARAMETER_BALANCE_LEFT, 0, left);

  839.                             postponeEvent(PluginPostEventParameterChange, PARAMETER_BALANCE_RIGHT, 0, right);

  840.                             continue;

  841.                         }

  842.                     }

  843. 

  844.                     // Control plugin parameters

  845.                     for (k=0; k < param.count; k++)

  846.                     {

  847.                         if (param.data[k].midiChannel != cinEvent->channel)

  848.                             continue;

  849.                         if (param.data[k].midiCC != cinEvent->controller)

  850.                             continue;

  851.                         if (param.data[k].type != PARAMETER_INPUT)

  852.                             continue;

  853. 

  854.                         if (param.data[k].hints & PARAMETER_IS_AUTOMABLE)

  855.                         {

  856.                             if (param.data[k].hints & PARAMETER_IS_BOOLEAN)

  857.                             {

  858.                                 value = cinEvent->value < 0.5 ? param.ranges[k].min : param.ranges[k].max;

  859.                             }

  860.                             else

  861.                             {

  862.                                 value = cinEvent->value * (param.ranges[k].max - param.ranges[k].min) + param.ranges[k].min;

  863. 

  864.                                 if (param.data[k].hints & PARAMETER_IS_INTEGER)

  865.                                     value = rint(value);

  866.                             }

  867. 

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

  869.                             postponeEvent(PluginPostEventParameterChange, k, 0, value);

  870.                         }

  871.                     }

  872. 

  873.                     break;

  874.                 }

  875. 

  876.                 case CarlaEngineEventMidiBankChange:

  877.                 case CarlaEngineEventMidiProgramChange:

  878.                     break;

  879. 

  880.                 case CarlaEngineEventAllSoundOff:

  881.                     if (cinEvent->channel == m_ctrlInChannel)

  882.                     {

  883.                         if (descriptor->deactivate)

  884.                         {

  885.                             descriptor->deactivate(handle);

  886.                             if (h2) descriptor->deactivate(h2);

  887.                         }

  888. 

  889.                         if (descriptor->activate)

  890.                         {

  891.                             descriptor->activate(handle);

  892.                             if (h2) descriptor->activate(h2);

  893.                         }

  894. 

  895.                         postponeEvent(PluginPostEventParameterChange, PARAMETER_ACTIVE, 0, 0.0);

  896.                         postponeEvent(PluginPostEventParameterChange, PARAMETER_ACTIVE, 0, 1.0);

  897.                     }

  898.                     break;

  899. 

  900.                 case CarlaEngineEventAllNotesOff:

  901.                     break;

  902.                 }

  903.             }

  904.         } // End of Parameters Input

  905. 

  906.         CARLA_PROCESS_CONTINUE_CHECK;

  907. 

  908.         // --------------------------------------------------------------------------------------------------------

  909.         // Special Parameters

  910. 

  911. #if 0

  912.         for (k=0; k < param.count; k++)

  913.         {

  914.             if (param.data[k].type == PARAMETER_LATENCY)

  915.             {

  916.                 // TODO: ladspa special params

  917.             }

  918.         }

  919. 

  920.         CARLA_PROCESS_CONTINUE_CHECK;

  921. #endif

  922. 

  923.         // --------------------------------------------------------------------------------------------------------

  924.         // Plugin processing

  925. 

  926.         if (m_active)

  927.         {

  928.             if (! m_activeBefore)

  929.             {

  930.                 if (m_latency > 0)

  931.                 {

  932.                     for (i=0; i < aIn.count; i++)

  933.                         memset(m_latencyBuffers[i], 0, sizeof(float)*m_latency);

  934.                 }

  935. 

  936.                 if (descriptor->activate)

  937.                 {

  938.                     descriptor->activate(handle);

  939.                     if (h2) descriptor->activate(h2);

  940.                 }

  941.             }

  942. 

  943.             for (i=0; i < aIn.count; i++)

  944.             {

  945.                 if (i == 0 || ! h2) descriptor->connect_port(handle, aIn.rindexes[i], inBuffer[i]);

  946.                 else if (i == 1)    descriptor->connect_port(h2, aIn.rindexes[i], inBuffer[i]);

  947.             }

  948. 

  949.             for (i=0; i < aOut.count; i++)

  950.             {

  951.                 if (i == 0 || ! h2) descriptor->connect_port(handle, aOut.rindexes[i], outBuffer[i]);

  952.                 else if (i == 1)    descriptor->connect_port(h2, aOut.rindexes[i], outBuffer[i]);

  953.             }

  954. 

  955.             descriptor->run(handle, frames);

  956.             if (h2) descriptor->run(h2, frames);

  957.         }

  958.         else

  959.         {

  960.             if (m_activeBefore)

  961.             {

  962.                 if (descriptor->deactivate)

  963.                 {

  964.                     descriptor->deactivate(handle);

  965.                     if (h2) descriptor->deactivate(h2);

  966.                 }

  967.             }

  968.         }

  969. 

  970.         CARLA_PROCESS_CONTINUE_CHECK;

  971. 

  972.         // --------------------------------------------------------------------------------------------------------

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

  974. 

  975.         if (m_active)

  976.         {

  977.             bool do_drywet  = (m_hints & PLUGIN_CAN_DRYWET) > 0 && x_dryWet != 1.0;

  978.             bool do_volume  = (m_hints & PLUGIN_CAN_VOLUME) > 0 && x_volume != 1.0;

  979.             bool do_balance = (m_hints & PLUGIN_CAN_BALANCE) > 0 && (x_balanceLeft != -1.0 || x_balanceRight != 1.0);

  980. 

  981.             double bal_rangeL, bal_rangeR;

  982.             float bufValue, oldBufLeft[do_balance ? frames : 0];

  983. 

  984.             for (i=0; i < aOut.count; i++)

  985.             {

  986.                 // Dry/Wet

  987.                 if (do_drywet)

  988.                 {

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

  990.                     {

  991.                         if (k < m_latency && m_latency < frames)

  992.                             bufValue = (aIn.count == 1) ? m_latencyBuffers[0][k] : m_latencyBuffers[i][k];

  993.                         else

  994.                             bufValue = (aIn.count == 1) ? inBuffer[0][k-m_latency] : inBuffer[i][k-m_latency];

  995. 

  996.                         outBuffer[i][k] = (outBuffer[i][k]*x_dryWet)+(bufValue*(1.0-x_dryWet));

  997.                     }

  998.                 }

  999. 

  1000.                 // Balance

  1001.                 if (do_balance)

  1002.                 {

  1003.                     if (i%2 == 0)

  1004.                         memcpy(&oldBufLeft, outBuffer[i], sizeof(float)*frames);

  1005. 

  1006.                     bal_rangeL = (x_balanceLeft+1.0)/2;

  1007.                     bal_rangeR = (x_balanceRight+1.0)/2;

  1008. 

  1009.                     for (k=0; k < frames; k++)

  1010.                     {

  1011.                         if (i%2 == 0)

  1012.                         {

  1013.                             // left output

  1014.                             outBuffer[i][k]  = oldBufLeft[k]*(1.0-bal_rangeL);

  1015.                             outBuffer[i][k] += outBuffer[i+1][k]*(1.0-bal_rangeR);

  1016.                         }

  1017.                         else

  1018.                         {

  1019.                             // right

  1020.                             outBuffer[i][k]  = outBuffer[i][k]*bal_rangeR;

  1021.                             outBuffer[i][k] += oldBufLeft[k]*bal_rangeL;

  1022.                         }

  1023.                     }

  1024.                 }

  1025. 

  1026.                 // Volume

  1027.                 if (do_volume)

  1028.                 {

  1029.                     for (k=0; k < frames; k++)

  1030.                         outBuffer[i][k] *= x_volume;

  1031.                 }

  1032. 

  1033.                 // Output VU

  1034. #ifndef BUILD_BRIDGE

  1035.                 if (carlaOptions.processMode != PROCESS_MODE_CONTINUOUS_RACK)

  1036. #endif

  1037.                 {

  1038.                     for (k=0; i < 2 && k < frames; k++)

  1039.                     {

  1040.                         if (abs(outBuffer[i][k]) > aOutsPeak[i])

  1041.                             aOutsPeak[i] = abs(outBuffer[i][k]);

  1042.                     }

  1043.                 }

  1044.             }

  1045. 

  1046.             // Latency, save values for next callback

  1047.             if (m_latency > 0 && m_latency < frames)

  1048.             {

  1049.                 for (i=0; i < aIn.count; i++)

  1050.                     memcpy(m_latencyBuffers[i], inBuffer[i] + (frames - m_latency), sizeof(float)*m_latency);

  1051.             }

  1052.         }

  1053.         else

  1054.         {

  1055.             // disable any output sound if not active

  1056.             for (i=0; i < aOut.count; i++)

  1057.                 zeroF(outBuffer[i], frames);

  1058. 

  1059.             aOutsPeak[0] = 0.0;

  1060.             aOutsPeak[1] = 0.0;

  1061. 

  1062.         } // End of Post-processing

  1063. 

  1064.         CARLA_PROCESS_CONTINUE_CHECK;

  1065. 

  1066.         // --------------------------------------------------------------------------------------------------------

  1067.         // Control Output

  1068. 

  1069.         if (param.portCout && m_active)

  1070.         {

  1071.             double value;

  1072. 

  1073.             for (k=0; k < param.count; k++)

  1074.             {

  1075.                 if (param.data[k].type == PARAMETER_OUTPUT)

  1076.                 {

  1077.                     fixParameterValue(paramBuffers[k], param.ranges[k]);

  1078. 

  1079.                     if (param.data[k].midiCC > 0)

  1080.                     {

  1081.                         value = (paramBuffers[k] - param.ranges[k].min) / (param.ranges[k].max - param.ranges[k].min);

  1082.                         param.portCout->writeEvent(CarlaEngineEventControlChange, framesOffset, param.data[k].midiChannel, param.data[k].midiCC, value);

  1083.                     }

  1084.                 }

  1085.             }

  1086.         } // End of Control Output

  1087. 

  1088.         CARLA_PROCESS_CONTINUE_CHECK;

  1089. 

  1090.         // --------------------------------------------------------------------------------------------------------

  1091.         // Peak Values

  1092. 

  1093.         x_engine->setInputPeak(m_id, 0, aInsPeak[0]);

  1094.         x_engine->setInputPeak(m_id, 1, aInsPeak[1]);

  1095.         x_engine->setOutputPeak(m_id, 0, aOutsPeak[0]);

  1096.         x_engine->setOutputPeak(m_id, 1, aOutsPeak[1]);

  1097. 

  1098.         m_activeBefore = m_active;

  1099.     }

  1100. 

  1101.     // -------------------------------------------------------------------

  1102.     // Cleanup

  1103. 

  1104.     void deleteBuffers()

  1105.     {

  1106.         qDebug("LadspaPlugin::deleteBuffers() - start");

  1107. 

  1108.         if (param.count > 0)

  1109.             delete[] paramBuffers;

  1110. 

  1111.         paramBuffers = nullptr;

  1112. 

  1113.         CarlaPlugin::deleteBuffers();

  1114. 

  1115.         qDebug("LadspaPlugin::deleteBuffers() - end");

  1116.     }

  1117. 

  1118.     // -------------------------------------------------------------------

  1119. 

  1120.     bool init(const char* const filename, const char* const name, const char* const label, const LADSPA_RDF_Descriptor* const rdf_descriptor_)

  1121.     {

  1122.         // ---------------------------------------------------------------

  1123.         // open DLL

  1124. 

  1125.         if (! libOpen(filename))

  1126.         {

  1127.             setLastError(libError(filename));

  1128.             return false;

  1129.         }

  1130. 

  1131.         // ---------------------------------------------------------------

  1132.         // get DLL main entry

  1133. 

  1134.         const LADSPA_Descriptor_Function descFn = (LADSPA_Descriptor_Function)libSymbol("ladspa_descriptor");

  1135. 

  1136.         if (! descFn)

  1137.         {

  1138.             setLastError("Could not find the LASDPA Descriptor in the plugin library");

  1139.             return false;

  1140.         }

  1141. 

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

  1143.         // get descriptor that matches label

  1144. 

  1145.         unsigned long i = 0;

  1146.         while ((descriptor = descFn(i++)))

  1147.         {

  1148.             if (strcmp(descriptor->Label, label) == 0)

  1149.                 break;

  1150.         }

  1151. 

  1152.         if (! descriptor)

  1153.         {

  1154.             setLastError("Could not find the requested plugin Label in the plugin library");

  1155.             return false;

  1156.         }

  1157. 

  1158.         // ---------------------------------------------------------------

  1159.         // get info

  1160. 

  1161.         m_filename = strdup(filename);

  1162. 

  1163.         if (is_ladspa_rdf_descriptor_valid(rdf_descriptor_, descriptor))

  1164.             rdf_descriptor = ladspa_rdf_dup(rdf_descriptor_);

  1165. 

  1166.         if (name)

  1167.             m_name = x_engine->getUniquePluginName(name);

  1168.         else if (rdf_descriptor && rdf_descriptor->Title)

  1169.             m_name = x_engine->getUniquePluginName(rdf_descriptor->Title);

  1170.         else

  1171.             m_name = x_engine->getUniquePluginName(descriptor->Name);

  1172. 

  1173.         // ---------------------------------------------------------------

  1174.         // register client

  1175. 

  1176.         x_client = x_engine->addClient(this);

  1177. 

  1178.         if (! x_client->isOk())

  1179.         {

  1180.             setLastError("Failed to register plugin client");

  1181.             return false;

  1182.         }

  1183. 

  1184.         // ---------------------------------------------------------------

  1185.         // initialize plugin

  1186. 

  1187.         handle = descriptor->instantiate(descriptor, x_engine->getSampleRate());

  1188. 

  1189.         if (! handle)

  1190.         {

  1191.             setLastError("Plugin failed to initialize");

  1192.             return false;

  1193.         }

  1194. 

  1195.         return true;

  1196.     }

  1197. 

  1198. private:

  1199.     LADSPA_Handle handle, h2;

  1200.     const LADSPA_Descriptor* descriptor;

  1201.     const LADSPA_RDF_Descriptor* rdf_descriptor;

  1202. 

  1203.     float* paramBuffers;

  1204. };

  1205. 

  1206. /**@}*/

  1207. 

  1208. CARLA_BACKEND_END_NAMESPACE

  1209. 

  1210. #else // WANT_LADSPA

  1211. #  warning Building without LADSPA support

  1212. #endif

  1213. 

  1214. CARLA_BACKEND_START_NAMESPACE

  1215. 

  1216. CarlaPlugin* CarlaPlugin::newLADSPA(const initializer& init, const void* const extra)

  1217. {

  1218.     qDebug("CarlaPlugin::newLADSPA(%p, \"%s\", \"%s\", \"%s\", %p)", init.engine, init.filename, init.name, init.label, extra);

  1219. 

  1220. #ifdef WANT_LADSPA

  1221.     short id = init.engine->getNewPluginId();

  1222. 

  1223.     if (id < 0 || id > CarlaEngine::maxPluginNumber())

  1224.     {

  1225.         setLastError("Maximum number of plugins reached");

  1226.         return nullptr;

  1227.     }

  1228. 

  1229.     LadspaPlugin* const plugin = new LadspaPlugin(init.engine, id);

  1230. 

  1231.     if (! plugin->init(init.filename, init.name, init.label, (const LADSPA_RDF_Descriptor*)extra))

  1232.     {

  1233.         delete plugin;

  1234.         return nullptr;

  1235.     }

  1236. 

  1237.     plugin->reload();

  1238. 

  1239. #  ifndef BUILD_BRIDGE

  1240.     if (carlaOptions.processMode == PROCESS_MODE_CONTINUOUS_RACK)

  1241.     {

  1242.         if (! (plugin->hints() & PLUGIN_CAN_FORCE_STEREO))

  1243.         {

  1244.             setLastError("Carla's rack mode can only work with Mono or Stereo LADSPA plugins, sorry!");

  1245.             delete plugin;

  1246.             return nullptr;

  1247.         }

  1248.     }

  1249. #  endif

  1250. 

  1251.     plugin->registerToOscControl();

  1252. 

  1253.     return plugin;

  1254. #else

  1255.     setLastError("LADSPA support not available");

  1256.     return nullptr;

  1257. #endif

  1258. }

  1259. 

  1260. CARLA_BACKEND_END_NAMESPACE