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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 unsigned int id)

  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.     {

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

  50.     }

  51. 

  52.     ~LadspaPlugin() override

  53.     {

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

  55. 

  56.         pData->singleMutex.lock();

  57.         pData->masterMutex.lock();

  58. 

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

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

  61. 

  62.         if (pData->active)

  63.         {

  64.             deactivate();

  65.             pData->active = false;

  66.         }

  67. 

  68.         if (fDescriptor != nullptr)

  69.         {

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

  71.             {

  72.                 if (fHandle != nullptr)

  73.                     fDescriptor->cleanup(fHandle);

  74.                 if (fHandle2 != nullptr)

  75.                     fDescriptor->cleanup(fHandle2);

  76.             }

  77. 

  78.             fHandle  = nullptr;

  79.             fHandle2 = nullptr;

  80.             fDescriptor = nullptr;

  81.         }

  82. 

  83.         if (fRdfDescriptor != nullptr)

  84.         {

  85.             delete fRdfDescriptor;

  86.             fRdfDescriptor = nullptr;

  87.         }

  88. 

  89.         clearBuffers();

  90.     }

  91. 

  92.     // -------------------------------------------------------------------

  93.     // Information (base)

  94. 

  95.     PluginType getType() const noexcept override

  96.     {

  97.         return PLUGIN_LADSPA;

  98.     }

  99. 

  100.     PluginCategory getCategory() const noexcept override

  101.     {

  102.         if (fRdfDescriptor != nullptr)

  103.         {

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

  105. 

  106.             // Specific Types

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

  108.                 return PLUGIN_CATEGORY_DELAY;

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

  110.                 return PLUGIN_CATEGORY_MODULATOR;

  111.             if (category & (LADSPA_PLUGIN_AMPLIFIER))

  112.                 return PLUGIN_CATEGORY_DYNAMICS;

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

  114.                 return PLUGIN_CATEGORY_UTILITY;

  115. 

  116.             // Pre-set LADSPA Types

  117.             if (LADSPA_IS_PLUGIN_DYNAMICS(category))

  118.                 return PLUGIN_CATEGORY_DYNAMICS;

  119.             if (LADSPA_IS_PLUGIN_AMPLITUDE(category))

  120.                 return PLUGIN_CATEGORY_MODULATOR;

  121.             if (LADSPA_IS_PLUGIN_EQ(category))

  122.                 return PLUGIN_CATEGORY_EQ;

  123.             if (LADSPA_IS_PLUGIN_FILTER(category))

  124.                 return PLUGIN_CATEGORY_FILTER;

  125.             if (LADSPA_IS_PLUGIN_FREQUENCY(category))

  126.                 return PLUGIN_CATEGORY_UTILITY;

  127.             if (LADSPA_IS_PLUGIN_SIMULATOR(category))

  128.                 return PLUGIN_CATEGORY_OTHER;

  129.             if (LADSPA_IS_PLUGIN_TIME(category))

  130.                 return PLUGIN_CATEGORY_DELAY;

  131.             if (LADSPA_IS_PLUGIN_GENERATOR(category))

  132.                 return PLUGIN_CATEGORY_SYNTH;

  133.         }

  134. 

  135.         return CarlaPlugin::getCategory();

  136.     }

  137. 

  138.     int64_t getUniqueId() const noexcept override

  139.     {

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

  141. 

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

  143.     }

  144. 

  145.     // -------------------------------------------------------------------

  146.     // Information (count)

  147. 

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

  149.     {

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

  151. 

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

  153. 

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

  155.         {

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

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

  158.         }

  159. 

  160.         return 0;

  161.     }

  162. 

  163.     // -------------------------------------------------------------------

  164.     // Information (current data)

  165. 

  166.     // nothing

  167. 

  168.     // -------------------------------------------------------------------

  169.     // Information (per-plugin data)

  170. 

  171.     unsigned int getOptionsAvailable() const noexcept override

  172.     {

  173. #ifdef __USE_GNU

  174.         const bool isDssiVst(strcasestr(pData->filename, "dssi-vst"));

  175. #else

  176.         const bool isDssiVst(std::strstr(pData->filename, "dssi-vst"));

  177. #endif

  178. 

  179.         unsigned int options = 0x0;

  180. 

  181.         if (! isDssiVst)

  182.         {

  183.             options |= PLUGIN_OPTION_FIXED_BUFFERS;

  184. 

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

  186.             {

  187.                 if (pData->options & PLUGIN_OPTION_FORCE_STEREO)

  188.                     options |= PLUGIN_OPTION_FORCE_STEREO;

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

  190.                     options |= PLUGIN_OPTION_FORCE_STEREO;

  191.             }

  192.         }

  193. 

  194.         return options;

  195.     }

  196. 

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

  198.     {

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

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

  201. 

  202.         return fParamBuffers[parameterId];

  203.     }

  204. 

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

  206.     {

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

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

  209.         CARLA_SAFE_ASSERT_RETURN(scalePointId < getParameterScalePointCount(parameterId), 0.0f);

  210. 

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

  212. 

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

  214.         {

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

  216. 

  217.             if (scalePointId < port->ScalePointCount)

  218.             {

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

  220.                 return scalePoint->Value;

  221.             }

  222.         }

  223. 

  224.         return 0.0f;

  225.     }

  226. 

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

  228.     {

  229.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  230. 

  231.         if (fDescriptor->Label != nullptr)

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

  233.         else

  234.             CarlaPlugin::getLabel(strBuf);

  235.     }

  236. 

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

  238.     {

  239.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  240. 

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

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

  243.         else if (fDescriptor->Maker != nullptr)

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

  245.         else

  246.             CarlaPlugin::getMaker(strBuf);

  247.     }

  248. 

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

  250.     {

  251.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  252. 

  253.         if (fDescriptor->Copyright != nullptr)

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

  255.         else

  256.             CarlaPlugin::getCopyright(strBuf);

  257.     }

  258. 

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

  260.     {

  261.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  262. 

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

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

  265.         else if (fDescriptor->Name != nullptr)

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

  267.         else

  268.             CarlaPlugin::getRealName(strBuf);

  269.     }

  270. 

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

  272.     {

  273.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

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

  275. 

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

  277. 

  278.         if (rindex < static_cast<int32_t>(fDescriptor->PortCount))

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

  280.         else

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

  282.     }

  283. 

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

  285.     {

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

  287. 

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

  289. 

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

  291.         {

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

  293. 

  294.             if (LADSPA_PORT_HAS_LABEL(port->Hints) && port->Label != nullptr)

  295.             {

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

  297.                 return;

  298.             }

  299.         }

  300. 

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

  302.     }

  303. 

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

  305.     {

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

  307. 

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

  309. 

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

  311.         {

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

  313. 

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

  315.             {

  316.                 switch (port->Unit)

  317.                 {

  318.                 case LADSPA_UNIT_DB:

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

  320.                     return;

  321.                 case LADSPA_UNIT_COEF:

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

  323.                     return;

  324.                 case LADSPA_UNIT_HZ:

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

  326.                     return;

  327.                 case LADSPA_UNIT_S:

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

  329.                     return;

  330.                 case LADSPA_UNIT_MS:

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

  332.                     return;

  333.                 case LADSPA_UNIT_MIN:

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

  335.                     return;

  336.                 }

  337.             }

  338.         }

  339. 

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

  341.     }

  342. 

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

  344.     {

  345.         CARLA_SAFE_ASSERT_RETURN(fRdfDescriptor != nullptr,);

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

  347.         CARLA_SAFE_ASSERT_RETURN(scalePointId < getParameterScalePointCount(parameterId),);

  348. 

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

  350. 

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

  352.         {

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

  354. 

  355.             if (scalePointId < port->ScalePointCount)

  356.             {

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

  358. 

  359.                 if (scalePoint->Label != nullptr)

  360.                 {

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

  362.                     return;

  363.                 }

  364.             }

  365.         }

  366. 

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

  368.     }

  369. 

  370.     // -------------------------------------------------------------------

  371.     // Set data (state)

  372. 

  373.     // nothing

  374. 

  375.     // -------------------------------------------------------------------

  376.     // Set data (internal stuff)

  377. 

  378.     // nothing

  379. 

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

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

  382. 

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

  384.     {

  385.         CARLA_SAFE_ASSERT_RETURN(fParamBuffers != nullptr,);

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

  387. 

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

  389.         fParamBuffers[parameterId] = fixedValue;

  390. 

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

  392.     }

  393. 

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

  395.     // Set ui stuff

  396. 

  397.     // nothing

  398. 

  399.     // -------------------------------------------------------------------

  400.     // Plugin state

  401. 

  402.     void reload() override

  403.     {

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

  405.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  406.         CARLA_SAFE_ASSERT_RETURN(fHandle != nullptr,);

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

  408. 

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

  410. 

  411.         // Safely disable plugin for reload

  412.         const ScopedDisabler sd(this);

  413. 

  414.         if (pData->active)

  415.             deactivate();

  416. 

  417.         clearBuffers();

  418. 

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

  420.         const uint32_t portCount(static_cast<uint32_t>(fDescriptor->PortCount));

  421. 

  422.         uint32_t aIns, aOuts, params;

  423.         aIns = aOuts = params = 0;

  424. 

  425.         bool forcedStereoIn, forcedStereoOut;

  426.         forcedStereoIn = forcedStereoOut = false;

  427. 

  428.         bool needsCtrlIn, needsCtrlOut;

  429.         needsCtrlIn = needsCtrlOut = false;

  430. 

  431.         if (portCount > 0)

  432.         {

  433.             CARLA_ASSERT(fDescriptor->PortDescriptors != nullptr);

  434.             CARLA_ASSERT(fDescriptor->PortRangeHints != nullptr);

  435.             CARLA_ASSERT(fDescriptor->PortNames != nullptr);

  436. 

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

  438.             {

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

  440. 

  441.                 if (LADSPA_IS_PORT_AUDIO(portType))

  442.                 {

  443.                     if (LADSPA_IS_PORT_INPUT(portType))

  444.                         aIns += 1;

  445.                     else if (LADSPA_IS_PORT_OUTPUT(portType))

  446.                         aOuts += 1;

  447.                 }

  448.                 else if (LADSPA_IS_PORT_CONTROL(portType))

  449.                     params += 1;

  450.             }

  451.         }

  452. 

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

  454.         {

  455.             if (fHandle2 == nullptr)

  456.             {

  457.                 try {

  458.                     fHandle2 = fDescriptor->instantiate(fDescriptor, (unsigned long)sampleRate);

  459.                 } catch(...) {}

  460.             }

  461. 

  462.             if (fHandle2 != nullptr)

  463.             {

  464.                 if (aIns == 1)

  465.                 {

  466.                     aIns = 2;

  467.                     forcedStereoIn = true;

  468.                 }

  469. 

  470.                 if (aOuts == 1)

  471.                 {

  472.                     aOuts = 2;

  473.                     forcedStereoOut = true;

  474.                 }

  475.             }

  476.         }

  477. 

  478.         if (aIns > 0)

  479.         {

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

  481.             fAudioInBuffers = new float*[aIns];

  482. 

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

  484.                 fAudioInBuffers[i] = nullptr;

  485.         }

  486. 

  487.         if (aOuts > 0)

  488.         {

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

  490.             fAudioOutBuffers = new float*[aOuts];

  491.             needsCtrlIn = true;

  492. 

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

  494.                 fAudioOutBuffers[i] = nullptr;

  495.         }

  496. 

  497.         if (params > 0)

  498.         {

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

  500. 

  501.             fParamBuffers = new float[params];

  502.             FLOAT_CLEAR(fParamBuffers, params);

  503.         }

  504. 

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

  506.         CarlaString portName;

  507. 

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

  509.         {

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

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

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

  513. 

  514.             CARLA_ASSERT(fDescriptor->PortNames[i] != nullptr);

  515. 

  516.             if (LADSPA_IS_PORT_AUDIO(portType))

  517.             {

  518.                 portName.clear();

  519. 

  520.                 if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  521.                 {

  522.                     portName  = pData->name;

  523.                     portName += ":";

  524.                 }

  525. 

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

  527.                 portName.truncate(portNameSize);

  528. 

  529.                 if (LADSPA_IS_PORT_INPUT(portType))

  530.                 {

  531.                     uint32_t j = iAudioIn++;

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

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

  534. 

  535.                     if (forcedStereoIn)

  536.                     {

  537.                         portName += "_2";

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

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

  540.                     }

  541.                 }

  542.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  543.                 {

  544.                     uint32_t j = iAudioOut++;

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

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

  547. 

  548.                     if (forcedStereoOut)

  549.                     {

  550.                         portName += "_2";

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

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

  553.                     }

  554.                 }

  555.                 else

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

  557.             }

  558.             else if (LADSPA_IS_PORT_CONTROL(portType))

  559.             {

  560.                 uint32_t j = iCtrl++;

  561.                 pData->param.data[j].hints  = 0x0;

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

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

  564.                 pData->param.data[j].midiCC = -1;

  565.                 pData->param.data[j].midiChannel = 0;

  566.                 pData->param.special[j] = PARAMETER_SPECIAL_NULL;

  567. 

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

  569. 

  570.                 // min value

  571.                 if (LADSPA_IS_HINT_BOUNDED_BELOW(portRangeHints.HintDescriptor))

  572.                     min = portRangeHints.LowerBound;

  573.                 else

  574.                     min = 0.0f;

  575. 

  576.                 // max value

  577.                 if (LADSPA_IS_HINT_BOUNDED_ABOVE(portRangeHints.HintDescriptor))

  578.                     max = portRangeHints.UpperBound;

  579.                 else

  580.                     max = 1.0f;

  581. 

  582.                 if (min > max)

  583.                     max = min;

  584. 

  585.                 if (max - min == 0.0f)

  586.                 {

  587.                     carla_stderr2("WARNING - Broken plugin parameter '%s': max - min == 0.0f", fDescriptor->PortNames[i]);

  588.                     max = min + 0.1f;

  589.                 }

  590. 

  591.                 // default value

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

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

  594.                 else

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

  596. 

  597.                 if (def < min)

  598.                     def = min;

  599.                 else if (def > max)

  600.                     def = max;

  601. 

  602.                 if (LADSPA_IS_HINT_SAMPLE_RATE(portRangeHints.HintDescriptor))

  603.                 {

  604.                     min *= sampleRate;

  605.                     max *= sampleRate;

  606.                     def *= sampleRate;

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

  608.                 }

  609. 

  610.                 if (LADSPA_IS_HINT_TOGGLED(portRangeHints.HintDescriptor))

  611.                 {

  612.                     step = max - min;

  613.                     stepSmall = step;

  614.                     stepLarge = step;

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

  616.                 }

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

  618.                 {

  619.                     step = 1.0f;

  620.                     stepSmall = 1.0f;

  621.                     stepLarge = 10.0f;

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

  623.                 }

  624.                 else

  625.                 {

  626.                     float range = max - min;

  627.                     step = range/100.0f;

  628.                     stepSmall = range/1000.0f;

  629.                     stepLarge = range/10.0f;

  630.                 }

  631. 

  632.                 if (LADSPA_IS_PORT_INPUT(portType))

  633.                 {

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

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

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

  637.                     needsCtrlIn = true;

  638.                 }

  639.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  640.                 {

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

  642. 

  643.                     if (std::strcmp(fDescriptor->PortNames[i], "latency") == 0 || std::strcmp(fDescriptor->PortNames[i], "_latency") == 0)

  644.                     {

  645.                         min = 0.0f;

  646.                         max = sampleRate;

  647.                         def = 0.0f;

  648.                         step = 1.0f;

  649.                         stepSmall = 1.0f;

  650.                         stepLarge = 1.0f;

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

  652.                     }

  653.                     else

  654.                     {

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

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

  657.                         needsCtrlOut = true;

  658.                     }

  659.                 }

  660.                 else

  661.                 {

  662.                     pData->param.data[j].type = PARAMETER_UNKNOWN;

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

  664.                 }

  665. 

  666.                 // extra parameter hints

  667.                 if (LADSPA_IS_HINT_LOGARITHMIC(portRangeHints.HintDescriptor))

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

  669. 

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

  671.                 if (hasPortRDF && fRdfDescriptor->Ports[i].ScalePointCount > 1)

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

  673. 

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

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

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

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

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

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

  680. 

  681.                 // Start parameters in their default values

  682.                 fParamBuffers[j] = def;

  683. 

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

  685. 

  686.                 if (fHandle2 != nullptr)

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

  688.             }

  689.             else

  690.             {

  691.                 // Not Audio or Control

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

  693. 

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

  695. 

  696.                 if (fHandle2 != nullptr)

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

  698.             }

  699.         }

  700. 

  701.         if (needsCtrlIn)

  702.         {

  703.             portName.clear();

  704. 

  705.             if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  706.             {

  707.                 portName  = pData->name;

  708.                 portName += ":";

  709.             }

  710. 

  711.             portName += "events-in";

  712.             portName.truncate(portNameSize);

  713. 

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

  715.         }

  716. 

  717.         if (needsCtrlOut)

  718.         {

  719.             portName.clear();

  720. 

  721.             if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  722.             {

  723.                 portName  = pData->name;

  724.                 portName += ":";

  725.             }

  726. 

  727.             portName += "events-out";

  728.             portName.truncate(portNameSize);

  729. 

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

  731.         }

  732. 

  733.         if (forcedStereoIn || forcedStereoOut)

  734.             pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  735.         else

  736.             pData->options &= ~PLUGIN_OPTION_FORCE_STEREO;

  737. 

  738.         // plugin hints

  739.         pData->hints = 0x0;

  740. 

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

  742.             pData->hints |= PLUGIN_IS_RTSAFE;

  743. 

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

  745.             pData->hints |= PLUGIN_CAN_DRYWET;

  746. 

  747.         if (aOuts > 0)

  748.             pData->hints |= PLUGIN_CAN_VOLUME;

  749. 

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

  751.             pData->hints |= PLUGIN_CAN_BALANCE;

  752. 

  753.         // extra plugin hints

  754.         pData->extraHints = 0x0;

  755. 

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

  757.             pData->extraHints |= PLUGIN_EXTRA_HINT_CAN_RUN_RACK;

  758. 

  759.         // check latency

  760.         if (pData->hints & PLUGIN_CAN_DRYWET)

  761.         {

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

  763.             {

  764.                 if (pData->param.special[i] != PARAMETER_SPECIAL_LATENCY)

  765.                    continue;

  766. 

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

  768. 

  769.                 float tmpIn[aIns][2];

  770.                 float tmpOut[aOuts][2];

  771. 

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

  773.                 {

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

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

  776. 

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

  778.                 }

  779. 

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

  781.                 {

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

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

  784. 

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

  786.                 }

  787. 

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

  789.                     fDescriptor->activate(fHandle);

  790. 

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

  792. 

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

  794.                     fDescriptor->deactivate(fHandle);

  795. 

  796.                 const uint32_t latency = (uint32_t)fParamBuffers[i];

  797. 

  798.                 if (pData->latency != latency)

  799.                 {

  800.                     pData->latency = latency;

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

  802.                     pData->recreateLatencyBuffers();

  803.                 }

  804. 

  805.                 break;

  806.             }

  807.         }

  808. 

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

  810. 

  811.         if (pData->active)

  812.             activate();

  813. 

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

  815.     }

  816. 

  817.     // -------------------------------------------------------------------

  818.     // Plugin processing

  819. 

  820.     void activate() noexcept override

  821.     {

  822.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  823.         CARLA_SAFE_ASSERT_RETURN(fHandle != nullptr,);

  824. 

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

  826.         {

  827.             try {

  828.                 fDescriptor->activate(fHandle);

  829.             } catch(...) {}

  830. 

  831.             if (fHandle2 != nullptr)

  832.             {

  833.                 try {

  834.                     fDescriptor->activate(fHandle2);

  835.                 } catch(...) {}

  836.             }

  837.         }

  838.     }

  839. 

  840.     void deactivate() noexcept override

  841.     {

  842.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  843.         CARLA_SAFE_ASSERT_RETURN(fHandle != nullptr,);

  844. 

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

  846.         {

  847.             try {

  848.                 fDescriptor->deactivate(fHandle);

  849.             } catch(...) {}

  850. 

  851.             if (fHandle2 != nullptr)

  852.             {

  853.                 try {

  854.                     fDescriptor->deactivate(fHandle2);

  855.                 } catch(...) {}

  856.             }

  857.         }

  858.     }

  859. 

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

  861.     {

  862.         // --------------------------------------------------------------------------------------------------------

  863.         // Check if active

  864. 

  865.         if (! pData->active)

  866.         {

  867.             // disable any output sound

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

  869.                 FLOAT_CLEAR(outBuffer[i], frames);

  870.             return;

  871.         }

  872. 

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

  874.         // Check if needs reset

  875. 

  876.         if (pData->needsReset)

  877.         {

  878.             if (pData->latency > 0)

  879.             {

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

  881.                     FLOAT_CLEAR(pData->latencyBuffers[i], pData->latency);

  882.             }

  883. 

  884.             pData->needsReset = false;

  885.         }

  886. 

  887.         // --------------------------------------------------------------------------------------------------------

  888.         // Event Input and Processing

  889. 

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

  891.         {

  892.             // ----------------------------------------------------------------------------------------------------

  893.             // Event Input (System)

  894. 

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

  896. 

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

  898.             uint32_t timeOffset = 0;

  899. 

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

  901.             {

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

  903. 

  904.                 if (event.time >= frames)

  905.                     continue;

  906. 

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

  908. 

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

  910.                 {

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

  912.                         timeOffset = event.time;

  913.                 }

  914. 

  915.                 switch (event.type)

  916.                 {

  917.                 case kEngineEventTypeNull:

  918.                     break;

  919. 

  920.                 case kEngineEventTypeControl: {

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

  922. 

  923.                     switch (ctrlEvent.type)

  924.                     {

  925.                     case kEngineControlEventTypeNull:

  926.                         break;

  927. 

  928.                     case kEngineControlEventTypeParameter: {

  929. #ifndef BUILD_BRIDGE

  930.                         // Control backend stuff

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

  932.                         {

  933.                             float value;

  934. 

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

  936.                             {

  937.                                 value = ctrlEvent.value;

  938.                                 setDryWet(value, false, false);

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

  940.                                 break;

  941.                             }

  942. 

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

  944.                             {

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

  946.                                 setVolume(value, false, false);

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

  948.                                 break;

  949.                             }

  950. 

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

  952.                             {

  953.                                 float left, right;

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

  955. 

  956.                                 if (value < 0.0f)

  957.                                 {

  958.                                     left  = -1.0f;

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

  960.                                 }

  961.                                 else if (value > 0.0f)

  962.                                 {

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

  964.                                     right = 1.0f;

  965.                                 }

  966.                                 else

  967.                                 {

  968.                                     left  = -1.0f;

  969.                                     right = 1.0f;

  970.                                 }

  971. 

  972.                                 setBalanceLeft(left, false, false);

  973.                                 setBalanceRight(right, false, false);

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

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

  976.                                 break;

  977.                             }

  978.                         }

  979. #endif

  980. 

  981.                         // Control plugin parameters

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

  983.                         {

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

  985.                                 continue;

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

  987.                                 continue;

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

  989.                                 continue;

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

  991.                                 continue;

  992. 

  993.                             float value;

  994. 

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

  996.                             {

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

  998.                             }

  999.                             else

  1000.                             {

  1001.                                 value = pData->param.ranges[k].getUnnormalizedValue(ctrlEvent.value);

  1002. 

  1003.                                 if (pData->param.data[k].hints & PARAMETER_IS_INTEGER)

  1004.                                     value = std::rint(value);

  1005.                             }

  1006. 

  1007.                             setParameterValue(k, value, false, false, false);

  1008.                             pData->postponeRtEvent(kPluginPostRtEventParameterChange, static_cast<int32_t>(k), 0, value);

  1009.                             break;

  1010.                         }

  1011. 

  1012.                         break;

  1013.                     } // case kEngineControlEventTypeParameter

  1014. 

  1015.                     case kEngineControlEventTypeMidiBank:

  1016.                     case kEngineControlEventTypeMidiProgram:

  1017.                     case kEngineControlEventTypeAllSoundOff:

  1018.                     case kEngineControlEventTypeAllNotesOff:

  1019.                         break;

  1020.                     } // switch (ctrlEvent.type)

  1021.                     break;

  1022.                 } // case kEngineEventTypeControl

  1023. 

  1024.                 case kEngineEventTypeMidi:

  1025.                     break;

  1026.                 } // switch (event.type)

  1027.             }

  1028. 

  1029.             pData->postRtEvents.trySplice();

  1030. 

  1031.             if (frames > timeOffset)

  1032.                 processSingle(inBuffer, outBuffer, frames - timeOffset, timeOffset);

  1033. 

  1034.         } // End of Event Input and Processing

  1035. 

  1036.         // --------------------------------------------------------------------------------------------------------

  1037.         // Plugin processing (no events)

  1038. 

  1039.         else

  1040.         {

  1041.             processSingle(inBuffer, outBuffer, frames, 0);

  1042. 

  1043.         } // End of Plugin processing (no events)

  1044. 

  1045.         CARLA_PROCESS_CONTINUE_CHECK;

  1046. 

  1047.         // --------------------------------------------------------------------------------------------------------

  1048.         // Control Output

  1049. 

  1050.         if (pData->event.portOut != nullptr)

  1051.         {

  1052.             uint8_t  channel;

  1053.             uint16_t param;

  1054.             float    value;

  1055. 

  1056.             for (uint32_t k=0; k < pData->param.count; ++k)

  1057.             {

  1058.                 if (pData->param.data[k].type != PARAMETER_OUTPUT)

  1059.                     continue;

  1060. 

  1061.                 pData->param.ranges[k].fixValue(fParamBuffers[k]);

  1062. 

  1063.                 if (pData->param.data[k].midiCC > 0)

  1064.                 {

  1065.                     channel = pData->param.data[k].midiChannel;

  1066.                     param   = static_cast<uint16_t>(pData->param.data[k].midiCC);

  1067.                     value   = pData->param.ranges[k].getNormalizedValue(fParamBuffers[k]);

  1068.                     pData->event.portOut->writeControlEvent(0, channel, kEngineControlEventTypeParameter, param, value);

  1069.                 }

  1070.             }

  1071.         } // End of Control Output

  1072.     }

  1073. 

  1074.     bool processSingle(float** const inBuffer, float** const outBuffer, const uint32_t frames, const uint32_t timeOffset)

  1075.     {

  1076.         CARLA_SAFE_ASSERT_RETURN(frames > 0, false);

  1077. 

  1078.         if (pData->audioIn.count > 0)

  1079.         {

  1080.             CARLA_SAFE_ASSERT_RETURN(inBuffer != nullptr, false);

  1081.         }

  1082.         if (pData->audioOut.count > 0)

  1083.         {

  1084.             CARLA_SAFE_ASSERT_RETURN(outBuffer != nullptr, false);

  1085.         }

  1086. 

  1087.         // --------------------------------------------------------------------------------------------------------

  1088.         // Try lock, silence otherwise

  1089. 

  1090.         if (pData->engine->isOffline())

  1091.         {

  1092.             pData->singleMutex.lock();

  1093.         }

  1094.         else if (! pData->singleMutex.tryLock())

  1095.         {

  1096.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1097.             {

  1098.                 for (uint32_t k=0; k < frames; ++k)

  1099.                     outBuffer[i][k+timeOffset] = 0.0f;

  1100.             }

  1101. 

  1102.             return false;

  1103.         }

  1104. 

  1105.         // --------------------------------------------------------------------------------------------------------

  1106.         // Reset audio buffers

  1107. 

  1108.         for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1109.             FLOAT_COPY(fAudioInBuffers[i], inBuffer[i]+timeOffset, frames);

  1110. 

  1111.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1112.             FLOAT_CLEAR(fAudioOutBuffers[i], frames);

  1113. 

  1114.         // --------------------------------------------------------------------------------------------------------

  1115.         // Run plugin

  1116. 

  1117.         fDescriptor->run(fHandle, frames);

  1118. 

  1119.         if (fHandle2 != nullptr)

  1120.             fDescriptor->run(fHandle2, frames);

  1121. 

  1122. #ifndef BUILD_BRIDGE

  1123.         // --------------------------------------------------------------------------------------------------------

  1124.         // Post-processing (dry/wet, volume and balance)

  1125. 

  1126.         {

  1127.             const bool doDryWet  = (pData->hints & PLUGIN_CAN_DRYWET) != 0 && pData->postProc.dryWet != 1.0f;

  1128.             const bool doBalance = (pData->hints & PLUGIN_CAN_BALANCE) != 0 && (pData->postProc.balanceLeft != -1.0f || pData->postProc.balanceRight != 1.0f);

  1129. 

  1130.             bool isPair;

  1131.             float bufValue, oldBufLeft[doBalance ? frames : 1];

  1132. 

  1133.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1134.             {

  1135.                 // Dry/Wet

  1136.                 if (doDryWet)

  1137.                 {

  1138.                     for (uint32_t k=0; k < frames; ++k)

  1139.                     {

  1140.                         // TODO

  1141.                         //if (k < pData->latency && pData->latency < frames)

  1142.                         //    bufValue = (pData->audioIn.count == 1) ? pData->latencyBuffers[0][k] : pData->latencyBuffers[i][k];

  1143.                         //else

  1144.                         //    bufValue = (pData->audioIn.count == 1) ? inBuffer[0][k-m_latency] : inBuffer[i][k-m_latency];

  1145. 

  1146.                         bufValue = fAudioInBuffers[(pData->audioIn.count == 1) ? 0 : i][k];

  1147.                         fAudioOutBuffers[i][k] = (fAudioOutBuffers[i][k] * pData->postProc.dryWet) + (bufValue * (1.0f - pData->postProc.dryWet));

  1148.                     }

  1149.                 }

  1150. 

  1151.                 // Balance

  1152.                 if (doBalance)

  1153.                 {

  1154.                     isPair = (i % 2 == 0);

  1155. 

  1156.                     if (isPair)

  1157.                     {

  1158.                         CARLA_ASSERT(i+1 < pData->audioOut.count);

  1159.                         FLOAT_COPY(oldBufLeft, fAudioOutBuffers[i], frames);

  1160.                     }

  1161. 

  1162.                     float balRangeL = (pData->postProc.balanceLeft  + 1.0f)/2.0f;

  1163.                     float balRangeR = (pData->postProc.balanceRight + 1.0f)/2.0f;

  1164. 

  1165.                     for (uint32_t k=0; k < frames; ++k)

  1166.                     {

  1167.                         if (isPair)

  1168.                         {

  1169.                             // left

  1170.                             fAudioOutBuffers[i][k]  = oldBufLeft[k]            * (1.0f - balRangeL);

  1171.                             fAudioOutBuffers[i][k] += fAudioOutBuffers[i+1][k] * (1.0f - balRangeR);

  1172.                         }

  1173.                         else

  1174.                         {

  1175.                             // right

  1176.                             fAudioOutBuffers[i][k]  = fAudioOutBuffers[i][k] * balRangeR;

  1177.                             fAudioOutBuffers[i][k] += oldBufLeft[k]          * balRangeL;

  1178.                         }

  1179.                     }

  1180.                 }

  1181. 

  1182.                 // Volume (and buffer copy)

  1183.                 {

  1184.                     for (uint32_t k=0; k < frames; ++k)

  1185.                         outBuffer[i][k+timeOffset] = fAudioOutBuffers[i][k] * pData->postProc.volume;

  1186.                 }

  1187.             }

  1188. 

  1189. #if 0

  1190.             // Latency, save values for next callback, TODO

  1191.             if (pData->latency > 0 && pData->latency < frames)

  1192.             {

  1193.                 for (i=0; i < pData->audioIn.count; ++i)

  1194.                     FLOAT_COPY(pData->latencyBuffers[i], inBuffer[i] + (frames - pData->latency), pData->latency);

  1195.             }

  1196. #endif

  1197.         } // End of Post-processing

  1198. 

  1199. #else // BUILD_BRIDGE

  1200.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1201.         {

  1202.             for (uint32_t k=0; k < frames; ++k)

  1203.                 outBuffer[i][k+timeOffset] = fAudioOutBuffers[i][k];

  1204.         }

  1205. #endif

  1206. 

  1207.         // --------------------------------------------------------------------------------------------------------

  1208. 

  1209.         pData->singleMutex.unlock();

  1210.         return true;

  1211.     }

  1212. 

  1213.     void bufferSizeChanged(const uint32_t newBufferSize) override

  1214.     {

  1215.         CARLA_ASSERT_INT(newBufferSize > 0, newBufferSize);

  1216.         carla_debug("LadspaPlugin::bufferSizeChanged(%i) - start", newBufferSize);

  1217. 

  1218.         for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1219.         {

  1220.             if (fAudioInBuffers[i] != nullptr)

  1221.                 delete[] fAudioInBuffers[i];

  1222.             fAudioInBuffers[i] = new float[newBufferSize];

  1223.         }

  1224. 

  1225.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1226.         {

  1227.             if (fAudioOutBuffers[i] != nullptr)

  1228.                 delete[] fAudioOutBuffers[i];

  1229.             fAudioOutBuffers[i] = new float[newBufferSize];

  1230.         }

  1231. 

  1232.         if (fHandle2 == nullptr)

  1233.         {

  1234.             for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1235.             {

  1236.                 CARLA_ASSERT(fAudioInBuffers[i] != nullptr);

  1237.                 fDescriptor->connect_port(fHandle, pData->audioIn.ports[i].rindex, fAudioInBuffers[i]);

  1238.             }

  1239. 

  1240.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1241.             {

  1242.                 CARLA_ASSERT(fAudioOutBuffers[i] != nullptr);

  1243.                 fDescriptor->connect_port(fHandle, pData->audioOut.ports[i].rindex, fAudioOutBuffers[i]);

  1244.             }

  1245.         }

  1246.         else

  1247.         {

  1248.             if (pData->audioIn.count > 0)

  1249.             {

  1250.                 CARLA_ASSERT(pData->audioIn.count == 2);

  1251.                 CARLA_ASSERT(fAudioInBuffers[0] != nullptr);

  1252.                 CARLA_ASSERT(fAudioInBuffers[1] != nullptr);

  1253. 

  1254.                 fDescriptor->connect_port(fHandle,  pData->audioIn.ports[0].rindex, fAudioInBuffers[0]);

  1255.                 fDescriptor->connect_port(fHandle2, pData->audioIn.ports[1].rindex, fAudioInBuffers[1]);

  1256.             }

  1257. 

  1258.             if (pData->audioOut.count > 0)

  1259.             {

  1260.                 CARLA_ASSERT(pData->audioOut.count == 2);

  1261.                 CARLA_ASSERT(fAudioOutBuffers[0] != nullptr);

  1262.                 CARLA_ASSERT(fAudioOutBuffers[1] != nullptr);

  1263. 

  1264.                 fDescriptor->connect_port(fHandle,  pData->audioOut.ports[0].rindex, fAudioOutBuffers[0]);

  1265.                 fDescriptor->connect_port(fHandle2, pData->audioOut.ports[1].rindex, fAudioOutBuffers[1]);

  1266.             }

  1267.         }

  1268. 

  1269.         carla_debug("LadspaPlugin::bufferSizeChanged(%i) - end", newBufferSize);

  1270.     }

  1271. 

  1272.     void sampleRateChanged(const double newSampleRate) override

  1273.     {

  1274.         CARLA_ASSERT_INT(newSampleRate > 0.0, newSampleRate);

  1275.         carla_debug("LadspaPlugin::sampleRateChanged(%g) - start", newSampleRate);

  1276. 

  1277.         // TODO

  1278.         (void)newSampleRate;

  1279. 

  1280.         carla_debug("LadspaPlugin::sampleRateChanged(%g) - end", newSampleRate);

  1281.     }

  1282. 

  1283.     // -------------------------------------------------------------------

  1284.     // Plugin buffers

  1285. 

  1286.     void clearBuffers() override

  1287.     {

  1288.         carla_debug("LadspaPlugin::clearBuffers() - start");

  1289. 

  1290.         if (fAudioInBuffers != nullptr)

  1291.         {

  1292.             for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1293.             {

  1294.                 if (fAudioInBuffers[i] != nullptr)

  1295.                 {

  1296.                     delete[] fAudioInBuffers[i];

  1297.                     fAudioInBuffers[i] = nullptr;

  1298.                 }

  1299.             }

  1300. 

  1301.             delete[] fAudioInBuffers;

  1302.             fAudioInBuffers = nullptr;

  1303.         }

  1304. 

  1305.         if (fAudioOutBuffers != nullptr)

  1306.         {

  1307.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1308.             {

  1309.                 if (fAudioOutBuffers[i] != nullptr)

  1310.                 {

  1311.                     delete[] fAudioOutBuffers[i];

  1312.                     fAudioOutBuffers[i] = nullptr;

  1313.                 }

  1314.             }

  1315. 

  1316.             delete[] fAudioOutBuffers;

  1317.             fAudioOutBuffers = nullptr;

  1318.         }

  1319. 

  1320.         if (fParamBuffers != nullptr)

  1321.         {

  1322.             delete[] fParamBuffers;

  1323.             fParamBuffers = nullptr;

  1324.         }

  1325. 

  1326.         CarlaPlugin::clearBuffers();

  1327. 

  1328.         carla_debug("LadspaPlugin::clearBuffers() - end");

  1329.     }

  1330. 

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

  1332. 

  1333.     const void* getExtraStuff() const noexcept override

  1334.     {

  1335.         return fRdfDescriptor;

  1336.     }

  1337. 

  1338.     bool init(const char* const filename, const char* const name, const char* const label, const LADSPA_RDF_Descriptor* const rdfDescriptor)

  1339.     {

  1340.         CARLA_SAFE_ASSERT_RETURN(pData->engine != nullptr, false);

  1341. 

  1342.         // ---------------------------------------------------------------

  1343.         // first checks

  1344. 

  1345.         if (pData->client != nullptr)

  1346.         {

  1347.             pData->engine->setLastError("Plugin client is already registered");

  1348.             return false;

  1349.         }

  1350. 

  1351.         if (filename == nullptr || filename[0] == '\0')

  1352.         {

  1353.             pData->engine->setLastError("null filename");

  1354.             return false;

  1355.         }

  1356. 

  1357.         if (label == nullptr || label[0] == '\0')

  1358.         {

  1359.             pData->engine->setLastError("null label");

  1360.             return false;

  1361.         }

  1362. 

  1363.         // ---------------------------------------------------------------

  1364.         // open DLL

  1365. 

  1366.         if (! pData->libOpen(filename))

  1367.         {

  1368.             pData->engine->setLastError(pData->libError(filename));

  1369.             return false;

  1370.         }

  1371. 

  1372.         // ---------------------------------------------------------------

  1373.         // get DLL main entry

  1374. 

  1375.         const LADSPA_Descriptor_Function descFn = (LADSPA_Descriptor_Function)pData->libSymbol("ladspa_descriptor");

  1376. 

  1377.         if (descFn == nullptr)

  1378.         {

  1379.             pData->engine->setLastError("Could not find the LASDPA Descriptor in the plugin library");

  1380.             return false;

  1381.         }

  1382. 

  1383.         // ---------------------------------------------------------------

  1384.         // get descriptor that matches label

  1385. 

  1386.         unsigned long i = 0;

  1387.         while ((fDescriptor = descFn(i++)) != nullptr)

  1388.         {

  1389.             if (fDescriptor->Label != nullptr && std::strcmp(fDescriptor->Label, label) == 0)

  1390.                 break;

  1391.         }

  1392. 

  1393.         if (fDescriptor == nullptr)

  1394.         {

  1395.             pData->engine->setLastError("Could not find the requested plugin label in the plugin library");

  1396.             return false;

  1397.         }

  1398. 

  1399.         // ---------------------------------------------------------------

  1400.         // get info

  1401. 

  1402.         if (is_ladspa_rdf_descriptor_valid(rdfDescriptor, fDescriptor))

  1403.             fRdfDescriptor = ladspa_rdf_dup(rdfDescriptor);

  1404. 

  1405.         if (name != nullptr && name[0] != '\0')

  1406.             pData->name = pData->engine->getUniquePluginName(name);

  1407.         else if (fRdfDescriptor != nullptr && fRdfDescriptor->Title != nullptr && fRdfDescriptor->Title[0] != '\0')

  1408.             pData->name = pData->engine->getUniquePluginName(fRdfDescriptor->Title);

  1409.         else if (fDescriptor->Name != nullptr && fDescriptor->Name[0] != '\0')

  1410.             pData->name = pData->engine->getUniquePluginName(fDescriptor->Name);

  1411.         else

  1412.             pData->name = pData->engine->getUniquePluginName(fDescriptor->Label);

  1413. 

  1414.         pData->filename = carla_strdup(filename);

  1415. 

  1416.         // ---------------------------------------------------------------

  1417.         // register client

  1418. 

  1419.         pData->client = pData->engine->addClient(this);

  1420. 

  1421.         if (pData->client == nullptr || ! pData->client->isOk())

  1422.         {

  1423.             pData->engine->setLastError("Failed to register plugin client");

  1424.             return false;

  1425.         }

  1426. 

  1427.         // ---------------------------------------------------------------

  1428.         // initialize plugin

  1429. 

  1430.         try {

  1431.             fHandle = fDescriptor->instantiate(fDescriptor, (unsigned long)pData->engine->getSampleRate());

  1432.         } catch(...) {}

  1433. 

  1434.         if (fHandle == nullptr)

  1435.         {

  1436.             pData->engine->setLastError("Plugin failed to initialize");

  1437.             return false;

  1438.         }

  1439. 

  1440.         // ---------------------------------------------------------------

  1441.         // load plugin settings

  1442. 

  1443.         {

  1444. #ifdef __USE_GNU

  1445.             const bool isDssiVst(strcasestr(pData->filename, "dssi-vst"));

  1446. #else

  1447.             const bool isDssiVst(std::strstr(pData->filename, "dssi-vst"));

  1448. #endif

  1449. 

  1450.             // set default options

  1451.             pData->options = 0x0;

  1452. 

  1453.             if (isDssiVst)

  1454.                 pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;

  1455. 

  1456.             if (pData->engine->getOptions().forceStereo)

  1457.                 pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  1458. 

  1459.             // set identifier string

  1460.             CarlaString identifier("LADSPA/");

  1461.             identifier += CarlaString(getUniqueId());

  1462.             identifier += ",";

  1463.             identifier += label;

  1464.             pData->identifier = identifier.dup();

  1465. 

  1466.             // load settings

  1467.             pData->options = pData->loadSettings(pData->options, getOptionsAvailable());

  1468. 

  1469.             // ignore settings, we need this anyway

  1470.             if (isDssiVst)

  1471.                 pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;

  1472.         }

  1473. 

  1474.         return true;

  1475.     }

  1476. 

  1477.     // -------------------------------------------------------------------

  1478. 

  1479. private:

  1480.     LADSPA_Handle fHandle;

  1481.     LADSPA_Handle fHandle2;

  1482.     const LADSPA_Descriptor*     fDescriptor;

  1483.     const LADSPA_RDF_Descriptor* fRdfDescriptor;

  1484. 

  1485.     float** fAudioInBuffers;

  1486.     float** fAudioOutBuffers;

  1487.     float*  fParamBuffers;

  1488. 

  1489.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(LadspaPlugin)

  1490. };

  1491. 

  1492. CARLA_BACKEND_END_NAMESPACE

  1493. 

  1494. #endif // WANT_LADSPA

  1495. 

  1496. // -------------------------------------------------------------------------------------------------------------------

  1497. 

  1498. CARLA_BACKEND_START_NAMESPACE

  1499. 

  1500. CarlaPlugin* CarlaPlugin::newLADSPA(const Initializer& init, const LADSPA_RDF_Descriptor* const rdfDescriptor)

  1501. {

  1502.     carla_debug("CarlaPlugin::newLADSPA({%p, \"%s\", \"%s\", \"%s\", " P_INT64 "}, %p)", init.engine, init.filename, init.name, init.label, init.uniqueId, rdfDescriptor);

  1503. 

  1504. #ifdef WANT_LADSPA

  1505.     LadspaPlugin* const plugin(new LadspaPlugin(init.engine, init.id));

  1506. 

  1507.     if (! plugin->init(init.filename, init.name, init.label, rdfDescriptor))

  1508.     {

  1509.         delete plugin;

  1510.         return nullptr;

  1511.     }

  1512. 

  1513.     plugin->reload();

  1514. 

  1515.     if (init.engine->getProccessMode() == ENGINE_PROCESS_MODE_CONTINUOUS_RACK && ! plugin->canRunInRack())

  1516.     {

  1517.         init.engine->setLastError("Carla's rack mode can only work with Mono or Stereo LADSPA plugins, sorry!");

  1518.         delete plugin;

  1519.         return nullptr;

  1520.     }

  1521. 

  1522.     return plugin;

  1523. #else

  1524.     init.engine->setLastError("LADSPA support not available");

  1525.     return nullptr;

  1526. #endif

  1527. }

  1528. 

  1529. CARLA_BACKEND_END_NAMESPACE

  1530. 

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