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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. CARLA_BACKEND_START_NAMESPACE

  27. 

  28. #if 0

  29. }

  30. #endif

  31. 

  32. class LadspaPlugin : public CarlaPlugin

  33. {

  34. public:

  35.     LadspaPlugin(CarlaEngine* const engine, const unsigned int id)

  36.         : CarlaPlugin(engine, id),

  37.           fHandle(nullptr),

  38.           fHandle2(nullptr),

  39.           fDescriptor(nullptr),

  40.           fRdfDescriptor(nullptr),

  41.           fAudioInBuffers(nullptr),

  42.           fAudioOutBuffers(nullptr),

  43.           fParamBuffers(nullptr)

  44.     {

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

  46.     }

  47. 

  48.     ~LadspaPlugin() override

  49.     {

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

  51. 

  52.         pData->singleMutex.lock();

  53.         pData->masterMutex.lock();

  54. 

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

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

  57. 

  58.         if (pData->active)

  59.         {

  60.             deactivate();

  61.             pData->active = false;

  62.         }

  63. 

  64.         if (fDescriptor != nullptr)

  65.         {

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

  67.             {

  68.                 if (fHandle != nullptr)

  69.                     fDescriptor->cleanup(fHandle);

  70.                 if (fHandle2 != nullptr)

  71.                     fDescriptor->cleanup(fHandle2);

  72.             }

  73. 

  74.             fHandle  = nullptr;

  75.             fHandle2 = nullptr;

  76.             fDescriptor = nullptr;

  77.         }

  78. 

  79.         if (fRdfDescriptor != nullptr)

  80.         {

  81.             delete fRdfDescriptor;

  82.             fRdfDescriptor = nullptr;

  83.         }

  84. 

  85.         clearBuffers();

  86.     }

  87. 

  88.     // -------------------------------------------------------------------

  89.     // Information (base)

  90. 

  91.     PluginType getType() const noexcept override

  92.     {

  93.         return PLUGIN_LADSPA;

  94.     }

  95. 

  96.     PluginCategory getCategory() const noexcept override

  97.     {

  98.         if (fRdfDescriptor != nullptr)

  99.         {

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

  101. 

  102.             // Specific Types

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

  104.                 return PLUGIN_CATEGORY_DELAY;

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

  106.                 return PLUGIN_CATEGORY_MODULATOR;

  107.             if (category & (LADSPA_PLUGIN_AMPLIFIER))

  108.                 return PLUGIN_CATEGORY_DYNAMICS;

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

  110.                 return PLUGIN_CATEGORY_UTILITY;

  111. 

  112.             // Pre-set LADSPA Types

  113.             if (LADSPA_IS_PLUGIN_DYNAMICS(category))

  114.                 return PLUGIN_CATEGORY_DYNAMICS;

  115.             if (LADSPA_IS_PLUGIN_AMPLITUDE(category))

  116.                 return PLUGIN_CATEGORY_MODULATOR;

  117.             if (LADSPA_IS_PLUGIN_EQ(category))

  118.                 return PLUGIN_CATEGORY_EQ;

  119.             if (LADSPA_IS_PLUGIN_FILTER(category))

  120.                 return PLUGIN_CATEGORY_FILTER;

  121.             if (LADSPA_IS_PLUGIN_FREQUENCY(category))

  122.                 return PLUGIN_CATEGORY_UTILITY;

  123.             if (LADSPA_IS_PLUGIN_SIMULATOR(category))

  124.                 return PLUGIN_CATEGORY_OTHER;

  125.             if (LADSPA_IS_PLUGIN_TIME(category))

  126.                 return PLUGIN_CATEGORY_DELAY;

  127.             if (LADSPA_IS_PLUGIN_GENERATOR(category))

  128.                 return PLUGIN_CATEGORY_SYNTH;

  129.         }

  130. 

  131.         return CarlaPlugin::getCategory();

  132.     }

  133. 

  134.     long getUniqueId() const noexcept override

  135.     {

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

  137. 

  138.         return static_cast<long>(fDescriptor->UniqueID);

  139.     }

  140. 

  141.     // -------------------------------------------------------------------

  142.     // Information (count)

  143. 

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

  145.     {

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

  147. 

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

  149. 

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

  151.         {

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

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

  154.         }

  155. 

  156.         return 0;

  157.     }

  158. 

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

  160.     // Information (current data)

  161. 

  162.     // nothing

  163. 

  164.     // -------------------------------------------------------------------

  165.     // Information (per-plugin data)

  166. 

  167.     unsigned int getOptionsAvailable() const noexcept override

  168.     {

  169. #ifdef __USE_GNU

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

  171. #else

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

  173. #endif

  174. 

  175.         unsigned int options = 0x0;

  176. 

  177.         if (! isDssiVst)

  178.         {

  179.             options |= PLUGIN_OPTION_FIXED_BUFFERS;

  180. 

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

  182.             {

  183.                 if (pData->options & PLUGIN_OPTION_FORCE_STEREO)

  184.                     options |= PLUGIN_OPTION_FORCE_STEREO;

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

  186.                     options |= PLUGIN_OPTION_FORCE_STEREO;

  187.             }

  188.         }

  189. 

  190.         return options;

  191.     }

  192. 

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

  194.     {

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

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

  197. 

  198.         return fParamBuffers[parameterId];

  199.     }

  200. 

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

  202.     {

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

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

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

  206. 

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

  208. 

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

  210.         {

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

  212. 

  213.             if (scalePointId < port->ScalePointCount)

  214.             {

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

  216.                 return scalePoint->Value;

  217.             }

  218.         }

  219. 

  220.         return 0.0f;

  221.     }

  222. 

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

  224.     {

  225.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  226. 

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

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

  229.         else

  230.             CarlaPlugin::getLabel(strBuf);

  231.     }

  232. 

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

  234.     {

  235.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  236. 

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

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

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

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

  241.         else

  242.             CarlaPlugin::getMaker(strBuf);

  243.     }

  244. 

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

  246.     {

  247.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  248. 

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

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

  251.         else

  252.             CarlaPlugin::getCopyright(strBuf);

  253.     }

  254. 

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

  256.     {

  257.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  258. 

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

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

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

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

  263.         else

  264.             CarlaPlugin::getRealName(strBuf);

  265.     }

  266. 

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

  268.     {

  269.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

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

  271. 

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

  273. 

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

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

  276.         else

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

  278.     }

  279. 

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

  281.     {

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

  283. 

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

  285. 

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

  287.         {

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

  289. 

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

  291.             {

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

  293.                 return;

  294.             }

  295.         }

  296. 

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

  298.     }

  299. 

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

  301.     {

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

  303. 

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

  305. 

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

  307.         {

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

  309. 

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

  311.             {

  312.                 switch (port->Unit)

  313.                 {

  314.                 case LADSPA_UNIT_DB:

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

  316.                     return;

  317.                 case LADSPA_UNIT_COEF:

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

  319.                     return;

  320.                 case LADSPA_UNIT_HZ:

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

  322.                     return;

  323.                 case LADSPA_UNIT_S:

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

  325.                     return;

  326.                 case LADSPA_UNIT_MS:

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

  328.                     return;

  329.                 case LADSPA_UNIT_MIN:

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

  331.                     return;

  332.                 }

  333.             }

  334.         }

  335. 

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

  337.     }

  338. 

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

  340.     {

  341.         CARLA_SAFE_ASSERT_RETURN(fRdfDescriptor != nullptr,);

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

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

  344. 

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

  346. 

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

  348.         {

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

  350. 

  351.             if (scalePointId < port->ScalePointCount)

  352.             {

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

  354. 

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

  356.                 {

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

  358.                     return;

  359.                 }

  360.             }

  361.         }

  362. 

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

  364.     }

  365. 

  366.     // -------------------------------------------------------------------

  367.     // Set data (state)

  368. 

  369.     // nothing

  370. 

  371.     // -------------------------------------------------------------------

  372.     // Set data (internal stuff)

  373. 

  374.     // nothing

  375. 

  376.     // -------------------------------------------------------------------

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

  378. 

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

  380.     {

  381.         CARLA_SAFE_ASSERT_RETURN(fParamBuffers != nullptr,);

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

  383. 

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

  385.         fParamBuffers[parameterId] = fixedValue;

  386. 

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

  388.     }

  389. 

  390.     // -------------------------------------------------------------------

  391.     // Set ui stuff

  392. 

  393.     // nothing

  394. 

  395.     // -------------------------------------------------------------------

  396.     // Plugin state

  397. 

  398.     void reload() override

  399.     {

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

  401.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  402.         CARLA_SAFE_ASSERT_RETURN(fHandle != nullptr,);

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

  404. 

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

  406. 

  407.         // Safely disable plugin for reload

  408.         const ScopedDisabler sd(this);

  409. 

  410.         if (pData->active)

  411.             deactivate();

  412. 

  413.         clearBuffers();

  414. 

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

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

  417. 

  418.         uint32_t aIns, aOuts, params;

  419.         aIns = aOuts = params = 0;

  420. 

  421.         bool forcedStereoIn, forcedStereoOut;

  422.         forcedStereoIn = forcedStereoOut = false;

  423. 

  424.         bool needsCtrlIn, needsCtrlOut;

  425.         needsCtrlIn = needsCtrlOut = false;

  426. 

  427.         if (portCount > 0)

  428.         {

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

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

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

  432. 

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

  434.             {

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

  436. 

  437.                 if (LADSPA_IS_PORT_AUDIO(portType))

  438.                 {

  439.                     if (LADSPA_IS_PORT_INPUT(portType))

  440.                         aIns += 1;

  441.                     else if (LADSPA_IS_PORT_OUTPUT(portType))

  442.                         aOuts += 1;

  443.                 }

  444.                 else if (LADSPA_IS_PORT_CONTROL(portType))

  445.                     params += 1;

  446.             }

  447.         }

  448. 

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

  450.         {

  451.             if (fHandle2 == nullptr)

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

  453. 

  454.             if (fHandle2 != nullptr)

  455.             {

  456.                 if (aIns == 1)

  457.                 {

  458.                     aIns = 2;

  459.                     forcedStereoIn = true;

  460.                 }

  461. 

  462.                 if (aOuts == 1)

  463.                 {

  464.                     aOuts = 2;

  465.                     forcedStereoOut = true;

  466.                 }

  467.             }

  468.         }

  469. 

  470.         if (aIns > 0)

  471.         {

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

  473.             fAudioInBuffers = new float*[aIns];

  474. 

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

  476.                 fAudioInBuffers[i] = nullptr;

  477.         }

  478. 

  479.         if (aOuts > 0)

  480.         {

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

  482.             fAudioOutBuffers = new float*[aOuts];

  483.             needsCtrlIn = true;

  484. 

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

  486.                 fAudioOutBuffers[i] = nullptr;

  487.         }

  488. 

  489.         if (params > 0)

  490.         {

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

  492. 

  493.             fParamBuffers = new float[params];

  494.             FLOAT_CLEAR(fParamBuffers, params);

  495.         }

  496. 

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

  498.         CarlaString portName;

  499. 

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

  501.         {

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

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

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

  505. 

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

  507. 

  508.             if (LADSPA_IS_PORT_AUDIO(portType))

  509.             {

  510.                 portName.clear();

  511. 

  512.                 if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  513.                 {

  514.                     portName  = pData->name;

  515.                     portName += ":";

  516.                 }

  517. 

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

  519.                 portName.truncate(portNameSize);

  520. 

  521.                 if (LADSPA_IS_PORT_INPUT(portType))

  522.                 {

  523.                     uint32_t j = iAudioIn++;

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

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

  526. 

  527.                     if (forcedStereoIn)

  528.                     {

  529.                         portName += "_2";

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

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

  532.                     }

  533.                 }

  534.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  535.                 {

  536.                     uint32_t j = iAudioOut++;

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

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

  539. 

  540.                     if (forcedStereoOut)

  541.                     {

  542.                         portName += "_2";

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

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

  545.                     }

  546.                 }

  547.                 else

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

  549.             }

  550.             else if (LADSPA_IS_PORT_CONTROL(portType))

  551.             {

  552.                 uint32_t j = iCtrl++;

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

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

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

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

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

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

  559. 

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

  561. 

  562.                 // min value

  563.                 if (LADSPA_IS_HINT_BOUNDED_BELOW(portRangeHints.HintDescriptor))

  564.                     min = portRangeHints.LowerBound;

  565.                 else

  566.                     min = 0.0f;

  567. 

  568.                 // max value

  569.                 if (LADSPA_IS_HINT_BOUNDED_ABOVE(portRangeHints.HintDescriptor))

  570.                     max = portRangeHints.UpperBound;

  571.                 else

  572.                     max = 1.0f;

  573. 

  574.                 if (min > max)

  575.                     max = min;

  576. 

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

  578.                 {

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

  580.                     max = min + 0.1f;

  581.                 }

  582. 

  583.                 // default value

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

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

  586.                 else

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

  588. 

  589.                 if (def < min)

  590.                     def = min;

  591.                 else if (def > max)

  592.                     def = max;

  593. 

  594.                 if (LADSPA_IS_HINT_SAMPLE_RATE(portRangeHints.HintDescriptor))

  595.                 {

  596.                     min *= sampleRate;

  597.                     max *= sampleRate;

  598.                     def *= sampleRate;

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

  600.                 }

  601. 

  602.                 if (LADSPA_IS_HINT_TOGGLED(portRangeHints.HintDescriptor))

  603.                 {

  604.                     step = max - min;

  605.                     stepSmall = step;

  606.                     stepLarge = step;

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

  608.                 }

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

  610.                 {

  611.                     step = 1.0f;

  612.                     stepSmall = 1.0f;

  613.                     stepLarge = 10.0f;

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

  615.                 }

  616.                 else

  617.                 {

  618.                     float range = max - min;

  619.                     step = range/100.0f;

  620.                     stepSmall = range/1000.0f;

  621.                     stepLarge = range/10.0f;

  622.                 }

  623. 

  624.                 if (LADSPA_IS_PORT_INPUT(portType))

  625.                 {

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

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

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

  629.                     needsCtrlIn = true;

  630.                 }

  631.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  632.                 {

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

  634. 

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

  636.                     {

  637.                         min = 0.0f;

  638.                         max = sampleRate;

  639.                         def = 0.0f;

  640.                         step = 1.0f;

  641.                         stepSmall = 1.0f;

  642.                         stepLarge = 1.0f;

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

  644.                     }

  645.                     else

  646.                     {

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

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

  649.                         needsCtrlOut = true;

  650.                     }

  651.                 }

  652.                 else

  653.                 {

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

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

  656.                 }

  657. 

  658.                 // extra parameter hints

  659.                 if (LADSPA_IS_HINT_LOGARITHMIC(portRangeHints.HintDescriptor))

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

  661. 

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

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

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

  665. 

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

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

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

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

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

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

  672. 

  673.                 // Start parameters in their default values

  674.                 fParamBuffers[j] = def;

  675. 

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

  677. 

  678.                 if (fHandle2 != nullptr)

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

  680.             }

  681.             else

  682.             {

  683.                 // Not Audio or Control

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

  685. 

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

  687. 

  688.                 if (fHandle2 != nullptr)

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

  690.             }

  691.         }

  692. 

  693.         if (needsCtrlIn)

  694.         {

  695.             portName.clear();

  696. 

  697.             if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  698.             {

  699.                 portName  = pData->name;

  700.                 portName += ":";

  701.             }

  702. 

  703.             portName += "events-in";

  704.             portName.truncate(portNameSize);

  705. 

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

  707.         }

  708. 

  709.         if (needsCtrlOut)

  710.         {

  711.             portName.clear();

  712. 

  713.             if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  714.             {

  715.                 portName  = pData->name;

  716.                 portName += ":";

  717.             }

  718. 

  719.             portName += "events-out";

  720.             portName.truncate(portNameSize);

  721. 

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

  723.         }

  724. 

  725.         if (forcedStereoIn || forcedStereoOut)

  726.             pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  727.         else

  728.             pData->options &= ~PLUGIN_OPTION_FORCE_STEREO;

  729. 

  730.         // plugin hints

  731.         pData->hints = 0x0;

  732. 

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

  734.             pData->hints |= PLUGIN_IS_RTSAFE;

  735. 

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

  737.             pData->hints |= PLUGIN_CAN_DRYWET;

  738. 

  739.         if (aOuts > 0)

  740.             pData->hints |= PLUGIN_CAN_VOLUME;

  741. 

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

  743.             pData->hints |= PLUGIN_CAN_BALANCE;

  744. 

  745.         // extra plugin hints

  746.         pData->extraHints = 0x0;

  747. 

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

  749.             pData->extraHints |= PLUGIN_EXTRA_HINT_CAN_RUN_RACK;

  750. 

  751.         // check latency

  752.         if (pData->hints & PLUGIN_CAN_DRYWET)

  753.         {

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

  755.             {

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

  757.                    continue;

  758. 

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

  760. 

  761.                 float tmpIn[aIns][2];

  762.                 float tmpOut[aOuts][2];

  763. 

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

  765.                 {

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

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

  768. 

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

  770.                 }

  771. 

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

  773.                 {

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

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

  776. 

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

  778.                 }

  779. 

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

  781.                     fDescriptor->activate(fHandle);

  782. 

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

  784. 

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

  786.                     fDescriptor->deactivate(fHandle);

  787. 

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

  789. 

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

  791.                 {

  792.                     pData->latency = latency;

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

  794.                     pData->recreateLatencyBuffers();

  795.                 }

  796. 

  797.                 break;

  798.             }

  799.         }

  800. 

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

  802. 

  803.         if (pData->active)

  804.             activate();

  805. 

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

  807.     }

  808. 

  809.     // -------------------------------------------------------------------

  810.     // Plugin processing

  811. 

  812.     void activate() noexcept override

  813.     {

  814.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  815.         CARLA_SAFE_ASSERT_RETURN(fHandle != nullptr,);

  816. 

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

  818.         {

  819.             try {

  820.                 fDescriptor->activate(fHandle);

  821.             } catch(...) {}

  822. 

  823.             if (fHandle2 != nullptr)

  824.             {

  825.                 try {

  826.                     fDescriptor->activate(fHandle2);

  827.                 } catch(...) {}

  828.             }

  829.         }

  830.     }

  831. 

  832.     void deactivate() noexcept override

  833.     {

  834.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  835.         CARLA_SAFE_ASSERT_RETURN(fHandle != nullptr,);

  836. 

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

  838.         {

  839.             try {

  840.                 fDescriptor->deactivate(fHandle);

  841.             } catch(...) {}

  842. 

  843.             if (fHandle2 != nullptr)

  844.             {

  845.                 try {

  846.                     fDescriptor->deactivate(fHandle2);

  847.                 } catch(...) {}

  848.             }

  849.         }

  850.     }

  851. 

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

  853.     {

  854.         // --------------------------------------------------------------------------------------------------------

  855.         // Check if active

  856. 

  857.         if (! pData->active)

  858.         {

  859.             // disable any output sound

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

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

  862.             return;

  863.         }

  864. 

  865.         // --------------------------------------------------------------------------------------------------------

  866.         // Check if needs reset

  867. 

  868.         if (pData->needsReset)

  869.         {

  870.             if (pData->latency > 0)

  871.             {

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

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

  874.             }

  875. 

  876.             pData->needsReset = false;

  877.         }

  878. 

  879.         // --------------------------------------------------------------------------------------------------------

  880.         // Event Input and Processing

  881. 

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

  883.         {

  884.             // ----------------------------------------------------------------------------------------------------

  885.             // Event Input (System)

  886. 

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

  888. 

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

  890.             uint32_t timeOffset = 0;

  891. 

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

  893.             {

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

  895. 

  896.                 if (event.time >= frames)

  897.                     continue;

  898. 

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

  900. 

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

  902.                 {

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

  904.                         timeOffset = event.time;

  905.                 }

  906. 

  907.                 switch (event.type)

  908.                 {

  909.                 case kEngineEventTypeNull:

  910.                     break;

  911. 

  912.                 case kEngineEventTypeControl: {

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

  914. 

  915.                     switch (ctrlEvent.type)

  916.                     {

  917.                     case kEngineControlEventTypeNull:

  918.                         break;

  919. 

  920.                     case kEngineControlEventTypeParameter: {

  921. #ifndef BUILD_BRIDGE

  922.                         // Control backend stuff

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

  924.                         {

  925.                             float value;

  926. 

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

  928.                             {

  929.                                 value = ctrlEvent.value;

  930.                                 setDryWet(value, false, false);

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

  932.                                 break;

  933.                             }

  934. 

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

  936.                             {

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

  938.                                 setVolume(value, false, false);

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

  940.                                 break;

  941.                             }

  942. 

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

  944.                             {

  945.                                 float left, right;

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

  947. 

  948.                                 if (value < 0.0f)

  949.                                 {

  950.                                     left  = -1.0f;

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

  952.                                 }

  953.                                 else if (value > 0.0f)

  954.                                 {

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

  956.                                     right = 1.0f;

  957.                                 }

  958.                                 else

  959.                                 {

  960.                                     left  = -1.0f;

  961.                                     right = 1.0f;

  962.                                 }

  963. 

  964.                                 setBalanceLeft(left, false, false);

  965.                                 setBalanceRight(right, false, false);

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

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

  968.                                 break;

  969.                             }

  970.                         }

  971. #endif

  972. 

  973.                         // Control plugin parameters

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

  975.                         {

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

  977.                                 continue;

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

  979.                                 continue;

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

  981.                                 continue;

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

  983.                                 continue;

  984. 

  985.                             float value;

  986. 

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

  988.                             {

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

  990.                             }

  991.                             else

  992.                             {

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

  994. 

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

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

  997.                             }

  998. 

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

  1000.                             pData->postponeRtEvent(kPluginPostRtEventParameterChange, static_cast<int32_t>(k), 0, value);

  1001.                             break;

  1002.                         }

  1003. 

  1004.                         break;

  1005.                     } // case kEngineControlEventTypeParameter

  1006. 

  1007.                     case kEngineControlEventTypeMidiBank:

  1008.                     case kEngineControlEventTypeMidiProgram:

  1009.                     case kEngineControlEventTypeAllSoundOff:

  1010.                     case kEngineControlEventTypeAllNotesOff:

  1011.                         break;

  1012.                     } // switch (ctrlEvent.type)

  1013.                     break;

  1014.                 } // case kEngineEventTypeControl

  1015. 

  1016.                 case kEngineEventTypeMidi:

  1017.                     break;

  1018.                 } // switch (event.type)

  1019.             }

  1020. 

  1021.             pData->postRtEvents.trySplice();

  1022. 

  1023.             if (frames > timeOffset)

  1024.                 processSingle(inBuffer, outBuffer, frames - timeOffset, timeOffset);

  1025. 

  1026.         } // End of Event Input and Processing

  1027. 

  1028.         // --------------------------------------------------------------------------------------------------------

  1029.         // Plugin processing (no events)

  1030. 

  1031.         else

  1032.         {

  1033.             processSingle(inBuffer, outBuffer, frames, 0);

  1034. 

  1035.         } // End of Plugin processing (no events)

  1036. 

  1037.         CARLA_PROCESS_CONTINUE_CHECK;

  1038. 

  1039.         // --------------------------------------------------------------------------------------------------------

  1040.         // Control Output

  1041. 

  1042.         if (pData->event.portOut != nullptr)

  1043.         {

  1044.             uint8_t  channel;

  1045.             uint16_t param;

  1046.             float    value;

  1047. 

  1048.             for (uint32_t k=0; k < pData->param.count; ++k)

  1049.             {

  1050.                 if (pData->param.data[k].type != PARAMETER_OUTPUT)

  1051.                     continue;

  1052. 

  1053.                 pData->param.ranges[k].fixValue(fParamBuffers[k]);

  1054. 

  1055.                 if (pData->param.data[k].midiCC > 0)

  1056.                 {

  1057.                     channel = pData->param.data[k].midiChannel;

  1058.                     param   = static_cast<uint16_t>(pData->param.data[k].midiCC);

  1059.                     value   = pData->param.ranges[k].getNormalizedValue(fParamBuffers[k]);

  1060.                     pData->event.portOut->writeControlEvent(0, channel, kEngineControlEventTypeParameter, param, value);

  1061.                 }

  1062.             }

  1063.         } // End of Control Output

  1064.     }

  1065. 

  1066.     bool processSingle(float** const inBuffer, float** const outBuffer, const uint32_t frames, const uint32_t timeOffset)

  1067.     {

  1068.         CARLA_SAFE_ASSERT_RETURN(frames > 0, false);

  1069. 

  1070.         if (pData->audioIn.count > 0)

  1071.         {

  1072.             CARLA_SAFE_ASSERT_RETURN(inBuffer != nullptr, false);

  1073.         }

  1074.         if (pData->audioOut.count > 0)

  1075.         {

  1076.             CARLA_SAFE_ASSERT_RETURN(outBuffer != nullptr, false);

  1077.         }

  1078. 

  1079.         // --------------------------------------------------------------------------------------------------------

  1080.         // Try lock, silence otherwise

  1081. 

  1082.         if (pData->engine->isOffline())

  1083.         {

  1084.             pData->singleMutex.lock();

  1085.         }

  1086.         else if (! pData->singleMutex.tryLock())

  1087.         {

  1088.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1089.             {

  1090.                 for (uint32_t k=0; k < frames; ++k)

  1091.                     outBuffer[i][k+timeOffset] = 0.0f;

  1092.             }

  1093. 

  1094.             return false;

  1095.         }

  1096. 

  1097.         // --------------------------------------------------------------------------------------------------------

  1098.         // Reset audio buffers

  1099. 

  1100.         for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1101.             FLOAT_COPY(fAudioInBuffers[i], inBuffer[i]+timeOffset, frames);

  1102. 

  1103.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1104.             FLOAT_CLEAR(fAudioOutBuffers[i], frames);

  1105. 

  1106.         // --------------------------------------------------------------------------------------------------------

  1107.         // Run plugin

  1108. 

  1109.         fDescriptor->run(fHandle, frames);

  1110. 

  1111.         if (fHandle2 != nullptr)

  1112.             fDescriptor->run(fHandle2, frames);

  1113. 

  1114. #ifndef BUILD_BRIDGE

  1115.         // --------------------------------------------------------------------------------------------------------

  1116.         // Post-processing (dry/wet, volume and balance)

  1117. 

  1118.         {

  1119.             const bool doDryWet  = (pData->hints & PLUGIN_CAN_DRYWET) != 0 && pData->postProc.dryWet != 1.0f;

  1120.             const bool doBalance = (pData->hints & PLUGIN_CAN_BALANCE) != 0 && (pData->postProc.balanceLeft != -1.0f || pData->postProc.balanceRight != 1.0f);

  1121. 

  1122.             bool isPair;

  1123.             float bufValue, oldBufLeft[doBalance ? frames : 1];

  1124. 

  1125.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1126.             {

  1127.                 // Dry/Wet

  1128.                 if (doDryWet)

  1129.                 {

  1130.                     for (uint32_t k=0; k < frames; ++k)

  1131.                     {

  1132.                         // TODO

  1133.                         //if (k < pData->latency && pData->latency < frames)

  1134.                         //    bufValue = (pData->audioIn.count == 1) ? pData->latencyBuffers[0][k] : pData->latencyBuffers[i][k];

  1135.                         //else

  1136.                         //    bufValue = (pData->audioIn.count == 1) ? inBuffer[0][k-m_latency] : inBuffer[i][k-m_latency];

  1137. 

  1138.                         bufValue = fAudioInBuffers[(pData->audioIn.count == 1) ? 0 : i][k];

  1139.                         fAudioOutBuffers[i][k] = (fAudioOutBuffers[i][k] * pData->postProc.dryWet) + (bufValue * (1.0f - pData->postProc.dryWet));

  1140.                     }

  1141.                 }

  1142. 

  1143.                 // Balance

  1144.                 if (doBalance)

  1145.                 {

  1146.                     isPair = (i % 2 == 0);

  1147. 

  1148.                     if (isPair)

  1149.                     {

  1150.                         CARLA_ASSERT(i+1 < pData->audioOut.count);

  1151.                         FLOAT_COPY(oldBufLeft, fAudioOutBuffers[i], frames);

  1152.                     }

  1153. 

  1154.                     float balRangeL = (pData->postProc.balanceLeft  + 1.0f)/2.0f;

  1155.                     float balRangeR = (pData->postProc.balanceRight + 1.0f)/2.0f;

  1156. 

  1157.                     for (uint32_t k=0; k < frames; ++k)

  1158.                     {

  1159.                         if (isPair)

  1160.                         {

  1161.                             // left

  1162.                             fAudioOutBuffers[i][k]  = oldBufLeft[k]            * (1.0f - balRangeL);

  1163.                             fAudioOutBuffers[i][k] += fAudioOutBuffers[i+1][k] * (1.0f - balRangeR);

  1164.                         }

  1165.                         else

  1166.                         {

  1167.                             // right

  1168.                             fAudioOutBuffers[i][k]  = fAudioOutBuffers[i][k] * balRangeR;

  1169.                             fAudioOutBuffers[i][k] += oldBufLeft[k]          * balRangeL;

  1170.                         }

  1171.                     }

  1172.                 }

  1173. 

  1174.                 // Volume (and buffer copy)

  1175.                 {

  1176.                     for (uint32_t k=0; k < frames; ++k)

  1177.                         outBuffer[i][k+timeOffset] = fAudioOutBuffers[i][k] * pData->postProc.volume;

  1178.                 }

  1179.             }

  1180. 

  1181. #if 0

  1182.             // Latency, save values for next callback, TODO

  1183.             if (pData->latency > 0 && pData->latency < frames)

  1184.             {

  1185.                 for (i=0; i < pData->audioIn.count; ++i)

  1186.                     FLOAT_COPY(pData->latencyBuffers[i], inBuffer[i] + (frames - pData->latency), pData->latency);

  1187.             }

  1188. #endif

  1189.         } // End of Post-processing

  1190. 

  1191. #else // BUILD_BRIDGE

  1192.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1193.         {

  1194.             for (uint32_t k=0; k < frames; ++k)

  1195.                 outBuffer[i][k+timeOffset] = fAudioOutBuffers[i][k];

  1196.         }

  1197. #endif

  1198. 

  1199.         // --------------------------------------------------------------------------------------------------------

  1200. 

  1201.         pData->singleMutex.unlock();

  1202.         return true;

  1203.     }

  1204. 

  1205.     void bufferSizeChanged(const uint32_t newBufferSize) override

  1206.     {

  1207.         CARLA_ASSERT_INT(newBufferSize > 0, newBufferSize);

  1208.         carla_debug("LadspaPlugin::bufferSizeChanged(%i) - start", newBufferSize);

  1209. 

  1210.         for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1211.         {

  1212.             if (fAudioInBuffers[i] != nullptr)

  1213.                 delete[] fAudioInBuffers[i];

  1214.             fAudioInBuffers[i] = new float[newBufferSize];

  1215.         }

  1216. 

  1217.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1218.         {

  1219.             if (fAudioOutBuffers[i] != nullptr)

  1220.                 delete[] fAudioOutBuffers[i];

  1221.             fAudioOutBuffers[i] = new float[newBufferSize];

  1222.         }

  1223. 

  1224.         if (fHandle2 == nullptr)

  1225.         {

  1226.             for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1227.             {

  1228.                 CARLA_ASSERT(fAudioInBuffers[i] != nullptr);

  1229.                 fDescriptor->connect_port(fHandle, pData->audioIn.ports[i].rindex, fAudioInBuffers[i]);

  1230.             }

  1231. 

  1232.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1233.             {

  1234.                 CARLA_ASSERT(fAudioOutBuffers[i] != nullptr);

  1235.                 fDescriptor->connect_port(fHandle, pData->audioOut.ports[i].rindex, fAudioOutBuffers[i]);

  1236.             }

  1237.         }

  1238.         else

  1239.         {

  1240.             if (pData->audioIn.count > 0)

  1241.             {

  1242.                 CARLA_ASSERT(pData->audioIn.count == 2);

  1243.                 CARLA_ASSERT(fAudioInBuffers[0] != nullptr);

  1244.                 CARLA_ASSERT(fAudioInBuffers[1] != nullptr);

  1245. 

  1246.                 fDescriptor->connect_port(fHandle,  pData->audioIn.ports[0].rindex, fAudioInBuffers[0]);

  1247.                 fDescriptor->connect_port(fHandle2, pData->audioIn.ports[1].rindex, fAudioInBuffers[1]);

  1248.             }

  1249. 

  1250.             if (pData->audioOut.count > 0)

  1251.             {

  1252.                 CARLA_ASSERT(pData->audioOut.count == 2);

  1253.                 CARLA_ASSERT(fAudioOutBuffers[0] != nullptr);

  1254.                 CARLA_ASSERT(fAudioOutBuffers[1] != nullptr);

  1255. 

  1256.                 fDescriptor->connect_port(fHandle,  pData->audioOut.ports[0].rindex, fAudioOutBuffers[0]);

  1257.                 fDescriptor->connect_port(fHandle2, pData->audioOut.ports[1].rindex, fAudioOutBuffers[1]);

  1258.             }

  1259.         }

  1260. 

  1261.         carla_debug("LadspaPlugin::bufferSizeChanged(%i) - end", newBufferSize);

  1262.     }

  1263. 

  1264.     void sampleRateChanged(const double newSampleRate) override

  1265.     {

  1266.         CARLA_ASSERT_INT(newSampleRate > 0.0, (int)newSampleRate);

  1267.         carla_debug("LadspaPlugin::sampleRateChanged(%g) - start", newSampleRate);

  1268. 

  1269.         // TODO

  1270.         (void)newSampleRate;

  1271. 

  1272.         carla_debug("LadspaPlugin::sampleRateChanged(%g) - end", newSampleRate);

  1273.     }

  1274. 

  1275.     // -------------------------------------------------------------------

  1276.     // Plugin buffers

  1277. 

  1278.     void clearBuffers() override

  1279.     {

  1280.         carla_debug("LadspaPlugin::clearBuffers() - start");

  1281. 

  1282.         if (fAudioInBuffers != nullptr)

  1283.         {

  1284.             for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1285.             {

  1286.                 if (fAudioInBuffers[i] != nullptr)

  1287.                 {

  1288.                     delete[] fAudioInBuffers[i];

  1289.                     fAudioInBuffers[i] = nullptr;

  1290.                 }

  1291.             }

  1292. 

  1293.             delete[] fAudioInBuffers;

  1294.             fAudioInBuffers = nullptr;

  1295.         }

  1296. 

  1297.         if (fAudioOutBuffers != nullptr)

  1298.         {

  1299.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1300.             {

  1301.                 if (fAudioOutBuffers[i] != nullptr)

  1302.                 {

  1303.                     delete[] fAudioOutBuffers[i];

  1304.                     fAudioOutBuffers[i] = nullptr;

  1305.                 }

  1306.             }

  1307. 

  1308.             delete[] fAudioOutBuffers;

  1309.             fAudioOutBuffers = nullptr;

  1310.         }

  1311. 

  1312.         if (fParamBuffers != nullptr)

  1313.         {

  1314.             delete[] fParamBuffers;

  1315.             fParamBuffers = nullptr;

  1316.         }

  1317. 

  1318.         CarlaPlugin::clearBuffers();

  1319. 

  1320.         carla_debug("LadspaPlugin::clearBuffers() - end");

  1321.     }

  1322. 

  1323.     // -------------------------------------------------------------------

  1324. 

  1325.     const void* getExtraStuff() const noexcept override

  1326.     {

  1327.         return fRdfDescriptor;

  1328.     }

  1329. 

  1330.     bool init(const char* const filename, const char* const name, const char* const label, const LADSPA_RDF_Descriptor* const rdfDescriptor)

  1331.     {

  1332.         CARLA_SAFE_ASSERT_RETURN(pData->engine != nullptr, false);

  1333. 

  1334.         // ---------------------------------------------------------------

  1335.         // first checks

  1336. 

  1337.         if (pData->client != nullptr)

  1338.         {

  1339.             pData->engine->setLastError("Plugin client is already registered");

  1340.             return false;

  1341.         }

  1342. 

  1343.         if (filename == nullptr || filename[0] == '\0')

  1344.         {

  1345.             pData->engine->setLastError("null filename");

  1346.             return false;

  1347.         }

  1348. 

  1349.         if (label == nullptr || label[0] == '\0')

  1350.         {

  1351.             pData->engine->setLastError("null label");

  1352.             return false;

  1353.         }

  1354. 

  1355.         // ---------------------------------------------------------------

  1356.         // open DLL

  1357. 

  1358.         if (! pData->libOpen(filename))

  1359.         {

  1360.             pData->engine->setLastError(pData->libError(filename));

  1361.             return false;

  1362.         }

  1363. 

  1364.         // ---------------------------------------------------------------

  1365.         // get DLL main entry

  1366. 

  1367.         const LADSPA_Descriptor_Function descFn = (LADSPA_Descriptor_Function)pData->libSymbol("ladspa_descriptor");

  1368. 

  1369.         if (descFn == nullptr)

  1370.         {

  1371.             pData->engine->setLastError("Could not find the LASDPA Descriptor in the plugin library");

  1372.             return false;

  1373.         }

  1374. 

  1375.         // ---------------------------------------------------------------

  1376.         // get descriptor that matches label

  1377. 

  1378.         unsigned long i = 0;

  1379.         while ((fDescriptor = descFn(i++)) != nullptr)

  1380.         {

  1381.             if (fDescriptor->Label != nullptr && std::strcmp(fDescriptor->Label, label) == 0)

  1382.                 break;

  1383.         }

  1384. 

  1385.         if (fDescriptor == nullptr)

  1386.         {

  1387.             pData->engine->setLastError("Could not find the requested plugin label in the plugin library");

  1388.             return false;

  1389.         }

  1390. 

  1391.         // ---------------------------------------------------------------

  1392.         // get info

  1393. 

  1394.         if (is_ladspa_rdf_descriptor_valid(rdfDescriptor, fDescriptor))

  1395.             fRdfDescriptor = ladspa_rdf_dup(rdfDescriptor);

  1396. 

  1397.         if (name != nullptr && name[0] != '\0')

  1398.             pData->name = pData->engine->getUniquePluginName(name);

  1399.         else if (fRdfDescriptor != nullptr && fRdfDescriptor->Title != nullptr && fRdfDescriptor->Title[0] != '\0')

  1400.             pData->name = pData->engine->getUniquePluginName(fRdfDescriptor->Title);

  1401.         else if (fDescriptor->Name != nullptr && fDescriptor->Name[0] != '\0')

  1402.             pData->name = pData->engine->getUniquePluginName(fDescriptor->Name);

  1403.         else

  1404.             pData->name = pData->engine->getUniquePluginName(fDescriptor->Label);

  1405. 

  1406.         pData->filename = carla_strdup(filename);

  1407. 

  1408.         // ---------------------------------------------------------------

  1409.         // register client

  1410. 

  1411.         pData->client = pData->engine->addClient(this);

  1412. 

  1413.         if (pData->client == nullptr || ! pData->client->isOk())

  1414.         {

  1415.             pData->engine->setLastError("Failed to register plugin client");

  1416.             return false;

  1417.         }

  1418. 

  1419.         // ---------------------------------------------------------------

  1420.         // initialize plugin

  1421. 

  1422.         fHandle = fDescriptor->instantiate(fDescriptor, (unsigned long)pData->engine->getSampleRate());

  1423. 

  1424.         if (fHandle == nullptr)

  1425.         {

  1426.             pData->engine->setLastError("Plugin failed to initialize");

  1427.             return false;

  1428.         }

  1429. 

  1430.         // ---------------------------------------------------------------

  1431.         // load plugin settings

  1432. 

  1433.         {

  1434. #ifdef __USE_GNU

  1435.             const bool isDssiVst(strcasestr(pData->filename, "dssi-vst"));

  1436. #else

  1437.             const bool isDssiVst(std::strstr(pData->filename, "dssi-vst"));

  1438. #endif

  1439. 

  1440.             // set default options

  1441.             pData->options = 0x0;

  1442. 

  1443.             if (isDssiVst)

  1444.                 pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;

  1445. 

  1446.             if (pData->engine->getOptions().forceStereo)

  1447.                 pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  1448. 

  1449.             // set identifier string

  1450.             CarlaString identifier("LADSPA/");

  1451.             identifier += CarlaString(getUniqueId());

  1452.             identifier += ",";

  1453.             identifier += label;

  1454.             pData->identifier = identifier.dup();

  1455. 

  1456.             // load settings

  1457.             pData->options = pData->loadSettings(pData->options, getOptionsAvailable());

  1458. 

  1459.             // ignore settings, we need this anyway

  1460.             if (isDssiVst)

  1461.                 pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;

  1462.         }

  1463. 

  1464.         return true;

  1465.     }

  1466. 

  1467.     // -------------------------------------------------------------------

  1468. 

  1469. private:

  1470.     LADSPA_Handle fHandle;

  1471.     LADSPA_Handle fHandle2;

  1472.     const LADSPA_Descriptor*     fDescriptor;

  1473.     const LADSPA_RDF_Descriptor* fRdfDescriptor;

  1474. 

  1475.     float** fAudioInBuffers;

  1476.     float** fAudioOutBuffers;

  1477.     float*  fParamBuffers;

  1478. 

  1479.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(LadspaPlugin)

  1480. };

  1481. 

  1482. CARLA_BACKEND_END_NAMESPACE

  1483. 

  1484. #endif // WANT_LADSPA

  1485. 

  1486. // -------------------------------------------------------------------------------------------------------------------

  1487. 

  1488. CARLA_BACKEND_START_NAMESPACE

  1489. 

  1490. CarlaPlugin* CarlaPlugin::newLADSPA(const Initializer& init, const LADSPA_RDF_Descriptor* const rdfDescriptor)

  1491. {

  1492.     carla_debug("CarlaPlugin::newLADSPA({%p, \"%s\", \"%s\", \"%s\"}, %p)", init.engine, init.filename, init.name, init.label, rdfDescriptor);

  1493. 

  1494. #ifdef WANT_LADSPA

  1495.     LadspaPlugin* const plugin(new LadspaPlugin(init.engine, init.id));

  1496. 

  1497.     if (! plugin->init(init.filename, init.name, init.label, rdfDescriptor))

  1498.     {

  1499.         delete plugin;

  1500.         return nullptr;

  1501.     }

  1502. 

  1503.     plugin->reload();

  1504. 

  1505.     if (init.engine->getProccessMode() == ENGINE_PROCESS_MODE_CONTINUOUS_RACK && ! plugin->canRunInRack())

  1506.     {

  1507.         init.engine->setLastError("Carla's rack mode can only work with Mono or Stereo LADSPA plugins, sorry!");

  1508.         delete plugin;

  1509.         return nullptr;

  1510.     }

  1511. 

  1512.     return plugin;

  1513. #else

  1514.     init.engine->setLastError("LADSPA support not available");

  1515.     return nullptr;

  1516. #endif

  1517. }

  1518. 

  1519. CARLA_BACKEND_END_NAMESPACE

  1520. 

  1521. // -------------------------------------------------------------------------------------------------------------------