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Carla/source/backend/plugin/LadspaPlugin.cpp

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  1. /*

  2.  * Carla LADSPA Plugin

  3.  * Copyright (C) 2011-2013 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. 

  20. #ifdef WANT_LADSPA

  21. 

  22. #include "CarlaLadspaUtils.hpp"

  23. #include "CarlaLibUtils.hpp"

  24. 

  25. CARLA_BACKEND_START_NAMESPACE

  26. 

  27. #if 0

  28. }

  29. #endif

  30. 

  31. class LadspaPlugin : public CarlaPlugin

  32. {

  33. public:

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

  35.         : CarlaPlugin(engine, id),

  36.           fHandle(nullptr),

  37.           fHandle2(nullptr),

  38.           fDescriptor(nullptr),

  39.           fRdfDescriptor(nullptr),

  40.           fAudioInBuffers(nullptr),

  41.           fAudioOutBuffers(nullptr),

  42.           fParamBuffers(nullptr)

  43.     {

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

  45.     }

  46. 

  47.     ~LadspaPlugin() override

  48.     {

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

  50. 

  51.         pData->singleMutex.lock();

  52.         pData->masterMutex.lock();

  53. 

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

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

  56. 

  57.         if (pData->active)

  58.         {

  59.             deactivate();

  60.             pData->active = false;

  61.         }

  62. 

  63.         if (fDescriptor != nullptr)

  64.         {

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

  66.             {

  67.                 if (fHandle != nullptr)

  68.                     fDescriptor->cleanup(fHandle);

  69.                 if (fHandle2 != nullptr)

  70.                     fDescriptor->cleanup(fHandle2);

  71.             }

  72. 

  73.             fHandle  = nullptr;

  74.             fHandle2 = nullptr;

  75.             fDescriptor = nullptr;

  76.         }

  77. 

  78.         if (fRdfDescriptor != nullptr)

  79.         {

  80.             delete fRdfDescriptor;

  81.             fRdfDescriptor = nullptr;

  82.         }

  83. 

  84.         clearBuffers();

  85.     }

  86. 

  87.     // -------------------------------------------------------------------

  88.     // Information (base)

  89. 

  90.     PluginType getType() const noexcept override

  91.     {

  92.         return PLUGIN_LADSPA;

  93.     }

  94. 

  95.     PluginCategory getCategory() const override

  96.     {

  97.         if (fRdfDescriptor != nullptr)

  98.         {

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

  100. 

  101.             // Specific Types

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

  103.                 return PLUGIN_CATEGORY_DELAY;

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

  105.                 return PLUGIN_CATEGORY_MODULATOR;

  106.             if (category & (LADSPA_PLUGIN_AMPLIFIER))

  107.                 return PLUGIN_CATEGORY_DYNAMICS;

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

  109.                 return PLUGIN_CATEGORY_UTILITY;

  110. 

  111.             // Pre-set LADSPA Types

  112.             if (LADSPA_IS_PLUGIN_DYNAMICS(category))

  113.                 return PLUGIN_CATEGORY_DYNAMICS;

  114.             if (LADSPA_IS_PLUGIN_AMPLITUDE(category))

  115.                 return PLUGIN_CATEGORY_MODULATOR;

  116.             if (LADSPA_IS_PLUGIN_EQ(category))

  117.                 return PLUGIN_CATEGORY_EQ;

  118.             if (LADSPA_IS_PLUGIN_FILTER(category))

  119.                 return PLUGIN_CATEGORY_FILTER;

  120.             if (LADSPA_IS_PLUGIN_FREQUENCY(category))

  121.                 return PLUGIN_CATEGORY_UTILITY;

  122.             if (LADSPA_IS_PLUGIN_SIMULATOR(category))

  123.                 return PLUGIN_CATEGORY_OTHER;

  124.             if (LADSPA_IS_PLUGIN_TIME(category))

  125.                 return PLUGIN_CATEGORY_DELAY;

  126.             if (LADSPA_IS_PLUGIN_GENERATOR(category))

  127.                 return PLUGIN_CATEGORY_SYNTH;

  128.         }

  129. 

  130.         return getPluginCategoryFromName(pData->name);

  131.     }

  132. 

  133.     long getUniqueId() const override

  134.     {

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

  136. 

  137.         return fDescriptor->UniqueID;

  138.     }

  139. 

  140.     // -------------------------------------------------------------------

  141.     // Information (count)

  142. 

  143.     uint32_t getParameterScalePointCount(const uint32_t parameterId) const override

  144.     {

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

  146. 

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

  148. 

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

  150.         {

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

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

  153.         }

  154. 

  155.         return 0;

  156.     }

  157. 

  158.     // -------------------------------------------------------------------

  159.     // Information (current data)

  160. 

  161.     // nothing

  162. 

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

  164.     // Information (per-plugin data)

  165. 

  166.     unsigned int getOptionsAvailable() const override

  167.     {

  168. #ifdef __USE_GNU

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

  170. #else

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

  172. #endif

  173. 

  174.         unsigned int options = 0x0;

  175. 

  176.         if (! isDssiVst)

  177.         {

  178.             options |= PLUGIN_OPTION_FIXED_BUFFERS;

  179. 

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

  181.             {

  182.                 if (pData->options & PLUGIN_OPTION_FORCE_STEREO)

  183.                     options |= PLUGIN_OPTION_FORCE_STEREO;

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

  185.                     options |= PLUGIN_OPTION_FORCE_STEREO;

  186.             }

  187.         }

  188. 

  189.         return options;

  190.     }

  191. 

  192.     float getParameterValue(const uint32_t parameterId) const override

  193.     {

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

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

  196. 

  197.         return fParamBuffers[parameterId];

  198.     }

  199. 

  200.     float getParameterScalePointValue(const uint32_t parameterId, const uint32_t scalePointId) const override

  201.     {

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

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

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

  205. 

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

  207. 

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

  209.         {

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

  211. 

  212.             if (scalePointId < port->ScalePointCount)

  213.             {

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

  215.                 return scalePoint->Value;

  216.             }

  217.         }

  218. 

  219.         return 0.0f;

  220.     }

  221. 

  222.     void getLabel(char* const strBuf) const override

  223.     {

  224.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  225. 

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

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

  228.         else

  229.             CarlaPlugin::getLabel(strBuf);

  230.     }

  231. 

  232.     void getMaker(char* const strBuf) const override

  233.     {

  234.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  235. 

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

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

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

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

  240.         else

  241.             CarlaPlugin::getMaker(strBuf);

  242.     }

  243. 

  244.     void getCopyright(char* const strBuf) const override

  245.     {

  246.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  247. 

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

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

  250.         else

  251.             CarlaPlugin::getCopyright(strBuf);

  252.     }

  253. 

  254.     void getRealName(char* const strBuf) const override

  255.     {

  256.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  257. 

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

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

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

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

  262.         else

  263.             CarlaPlugin::getRealName(strBuf);

  264.     }

  265. 

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

  267.     {

  268.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

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

  270. 

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

  272. 

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

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

  275.         else

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

  277.     }

  278. 

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

  280.     {

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

  282. 

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

  284. 

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

  286.         {

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

  288. 

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

  290.             {

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

  292.                 return;

  293.             }

  294.         }

  295. 

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

  297.     }

  298. 

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

  300.     {

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

  302. 

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

  304. 

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

  306.         {

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

  308. 

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

  310.             {

  311.                 switch (port->Unit)

  312.                 {

  313.                 case LADSPA_UNIT_DB:

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

  315.                     return;

  316.                 case LADSPA_UNIT_COEF:

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

  318.                     return;

  319.                 case LADSPA_UNIT_HZ:

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

  321.                     return;

  322.                 case LADSPA_UNIT_S:

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

  324.                     return;

  325.                 case LADSPA_UNIT_MS:

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

  327.                     return;

  328.                 case LADSPA_UNIT_MIN:

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

  330.                     return;

  331.                 }

  332.             }

  333.         }

  334. 

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

  336.     }

  337. 

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

  339.     {

  340.         CARLA_SAFE_ASSERT_RETURN(fRdfDescriptor != nullptr,);

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

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

  343. 

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

  345. 

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

  347.         {

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

  349. 

  350.             if (scalePointId < port->ScalePointCount)

  351.             {

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

  353. 

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

  355.                 {

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

  357.                     return;

  358.                 }

  359.             }

  360.         }

  361. 

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

  363.     }

  364. 

  365.     // -------------------------------------------------------------------

  366.     // Set data (state)

  367. 

  368.     // nothing

  369. 

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

  371.     // Set data (internal stuff)

  372. 

  373.     // nothing

  374. 

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

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

  377. 

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

  379.     {

  380.         CARLA_SAFE_ASSERT_RETURN(fParamBuffers != nullptr,);

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

  382. 

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

  384.         fParamBuffers[parameterId] = fixedValue;

  385. 

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

  387.     }

  388. 

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

  390.     // Set gui stuff

  391. 

  392.     // nothing

  393. 

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

  395.     // Plugin state

  396. 

  397.     void reload() override

  398.     {

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

  400.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  401.         CARLA_SAFE_ASSERT_RETURN(fHandle != nullptr,);

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

  403. 

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

  405. 

  406.         // Safely disable plugin for reload

  407.         const ScopedDisabler sd(this);

  408. 

  409.         if (pData->active)

  410.             deactivate();

  411. 

  412.         clearBuffers();

  413. 

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

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

  416. 

  417.         uint32_t aIns, aOuts, params, j;

  418.         aIns = aOuts = params = 0;

  419. 

  420.         bool forcedStereoIn, forcedStereoOut;

  421.         forcedStereoIn = forcedStereoOut = false;

  422. 

  423.         bool needsCtrlIn, needsCtrlOut;

  424.         needsCtrlIn = needsCtrlOut = false;

  425. 

  426.         if (portCount > 0)

  427.         {

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

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

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

  431. 

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

  433.             {

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

  435. 

  436.                 if (LADSPA_IS_PORT_AUDIO(portType))

  437.                 {

  438.                     if (LADSPA_IS_PORT_INPUT(portType))

  439.                         aIns += 1;

  440.                     else if (LADSPA_IS_PORT_OUTPUT(portType))

  441.                         aOuts += 1;

  442.                 }

  443.                 else if (LADSPA_IS_PORT_CONTROL(portType))

  444.                     params += 1;

  445.             }

  446.         }

  447. 

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

  449.         {

  450.             if (fHandle2 == nullptr)

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

  452. 

  453.             if (fHandle2 != nullptr)

  454.             {

  455.                 if (aIns == 1)

  456.                 {

  457.                     aIns = 2;

  458.                     forcedStereoIn = true;

  459.                 }

  460. 

  461.                 if (aOuts == 1)

  462.                 {

  463.                     aOuts = 2;

  464.                     forcedStereoOut = true;

  465.                 }

  466.             }

  467.         }

  468. 

  469.         if (aIns > 0)

  470.         {

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

  472.             fAudioInBuffers = new float*[aIns];

  473. 

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

  475.                 fAudioInBuffers[i] = nullptr;

  476.         }

  477. 

  478.         if (aOuts > 0)

  479.         {

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

  481.             fAudioOutBuffers = new float*[aOuts];

  482.             needsCtrlIn = true;

  483. 

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

  485.                 fAudioOutBuffers[i] = nullptr;

  486.         }

  487. 

  488.         if (params > 0)

  489.         {

  490.             pData->param.createNew(params);

  491. 

  492.             fParamBuffers = new float[params];

  493.             FLOAT_CLEAR(fParamBuffers, params);

  494.         }

  495. 

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

  497.         CarlaString portName;

  498. 

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

  500.         {

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

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

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

  504. 

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

  506. 

  507.             if (LADSPA_IS_PORT_AUDIO(portType))

  508.             {

  509.                 portName.clear();

  510. 

  511.                 if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  512.                 {

  513.                     portName  = pData->name;

  514.                     portName += ":";

  515.                 }

  516. 

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

  518.                 portName.truncate(portNameSize);

  519. 

  520.                 if (LADSPA_IS_PORT_INPUT(portType))

  521.                 {

  522.                     j = iAudioIn++;

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

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

  525. 

  526.                     if (forcedStereoIn)

  527.                     {

  528.                         portName += "_2";

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

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

  531.                     }

  532.                 }

  533.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  534.                 {

  535.                     j = iAudioOut++;

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

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

  538. 

  539.                     if (forcedStereoOut)

  540.                     {

  541.                         portName += "_2";

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

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

  544.                     }

  545.                 }

  546.                 else

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

  548.             }

  549.             else if (LADSPA_IS_PORT_CONTROL(portType))

  550.             {

  551.                 j = iCtrl++;

  552.                 pData->param.data[j].index  = j;

  553.                 pData->param.data[j].rindex = i;

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

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

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

  557. 

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

  559. 

  560.                 // min value

  561.                 if (LADSPA_IS_HINT_BOUNDED_BELOW(portRangeHints.HintDescriptor))

  562.                     min = portRangeHints.LowerBound;

  563.                 else

  564.                     min = 0.0f;

  565. 

  566.                 // max value

  567.                 if (LADSPA_IS_HINT_BOUNDED_ABOVE(portRangeHints.HintDescriptor))

  568.                     max = portRangeHints.UpperBound;

  569.                 else

  570.                     max = 1.0f;

  571. 

  572.                 if (min > max)

  573.                     max = min;

  574.                 else if (max < min)

  575.                     min = max;

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

  634.                     {

  635.                         min = 0.0f;

  636.                         max = sampleRate;

  637.                         def = 0.0f;

  638.                         step = 1.0f;

  639.                         stepSmall = 1.0f;

  640.                         stepLarge = 1.0f;

  641. 

  642.                         pData->param.data[j].type  = PARAMETER_SPECIAL;

  643.                         pData->param.data[j].hints = 0; // TODO PARAMETER_LATENCY

  644.                     }

  645.                     else if (std::strcmp(fDescriptor->PortNames[i], "_sample-rate") == 0)

  646.                     {

  647.                         def = sampleRate;

  648.                         step = 1.0f;

  649.                         stepSmall = 1.0f;

  650.                         stepLarge = 1.0f;

  651. 

  652.                         pData->param.data[j].type  = PARAMETER_SPECIAL;

  653.                         pData->param.data[j].hints = 0; // TODO PARAMETER_SAMPLE_RATE

  654.                     }

  655.                     else

  656.                     {

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

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

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

  660.                         needsCtrlOut = true;

  661.                     }

  662.                 }

  663.                 else

  664.                 {

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

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

  667.                 }

  668. 

  669.                 // extra parameter hints

  670.                 if (LADSPA_IS_HINT_LOGARITHMIC(portRangeHints.HintDescriptor))

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

  672. 

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

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

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

  676. 

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

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

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

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

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

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

  683. 

  684.                 // Start parameters in their default values

  685.                 fParamBuffers[j] = def;

  686. 

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

  688. 

  689.                 if (fHandle2 != nullptr)

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

  691.             }

  692.             else

  693.             {

  694.                 // Not Audio or Control

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

  696. 

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

  698. 

  699.                 if (fHandle2 != nullptr)

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

  701.             }

  702.         }

  703. 

  704.         if (needsCtrlIn)

  705.         {

  706.             portName.clear();

  707. 

  708.             if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  709.             {

  710.                 portName  = pData->name;

  711.                 portName += ":";

  712.             }

  713. 

  714.             portName += "events-in";

  715.             portName.truncate(portNameSize);

  716. 

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

  718.         }

  719. 

  720.         if (needsCtrlOut)

  721.         {

  722.             portName.clear();

  723. 

  724.             if (processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT)

  725.             {

  726.                 portName  = pData->name;

  727.                 portName += ":";

  728.             }

  729. 

  730.             portName += "events-out";

  731.             portName.truncate(portNameSize);

  732. 

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

  734.         }

  735. 

  736.         if (forcedStereoIn || forcedStereoOut)

  737.             pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  738.         else

  739.             pData->options &= ~PLUGIN_OPTION_FORCE_STEREO;

  740. 

  741.         // plugin hints

  742.         pData->hints = 0x0;

  743. 

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

  745.             pData->hints |= PLUGIN_IS_RTSAFE;

  746. 

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

  748.             pData->hints |= PLUGIN_CAN_DRYWET;

  749. 

  750.         if (aOuts > 0)

  751.             pData->hints |= PLUGIN_CAN_VOLUME;

  752. 

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

  754.             pData->hints |= PLUGIN_CAN_BALANCE;

  755. 

  756.         // extra plugin hints

  757.         pData->extraHints = 0x0;

  758. 

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

  760.             pData->extraHints |= PLUGIN_EXTRA_HINT_CAN_RUN_RACK;

  761. 

  762.         // check latency

  763.         if (pData->hints & PLUGIN_CAN_DRYWET)

  764.         {

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

  766.             {

  767.                 // TODO

  768.                 //if (pData->param.data[i].type != PARAMETER_LATENCY)

  769.                 //    continue;

  770. 

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

  772. 

  773.                 float tmpIn[aIns][2];

  774.                 float tmpOut[aOuts][2];

  775. 

  776.                 for (j=0; j < aIns; ++j)

  777.                 {

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

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

  780. 

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

  782.                 }

  783. 

  784.                 for (j=0; j < aOuts; ++j)

  785.                 {

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

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

  788. 

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

  790.                 }

  791. 

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

  793.                     fDescriptor->activate(fHandle);

  794. 

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

  796. 

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

  798.                     fDescriptor->deactivate(fHandle);

  799. 

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

  801. 

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

  803.                 {

  804.                     pData->latency = latency;

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

  806.                     pData->recreateLatencyBuffers();

  807.                 }

  808. 

  809.                 break;

  810.             }

  811.         }

  812. 

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

  814. 

  815.         if (pData->active)

  816.             activate();

  817. 

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

  819.     }

  820. 

  821.     // -------------------------------------------------------------------

  822.     // Plugin processing

  823. 

  824.     void activate() override

  825.     {

  826.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  827.         CARLA_SAFE_ASSERT_RETURN(fHandle != nullptr,);

  828. 

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

  830.         {

  831.             fDescriptor->activate(fHandle);

  832. 

  833.             if (fHandle2 != nullptr)

  834.                 fDescriptor->activate(fHandle2);

  835.         }

  836.     }

  837. 

  838.     void deactivate() override

  839.     {

  840.         CARLA_SAFE_ASSERT_RETURN(fDescriptor != nullptr,);

  841.         CARLA_SAFE_ASSERT_RETURN(fHandle != nullptr,);

  842. 

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

  844.         {

  845.             fDescriptor->deactivate(fHandle);

  846. 

  847.             if (fHandle2 != nullptr)

  848.                 fDescriptor->deactivate(fHandle2);

  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. 

  863.             return;

  864.         }

  865. 

  866.         // --------------------------------------------------------------------------------------------------------

  867.         // Check if needs reset

  868. 

  869.         if (pData->needsReset)

  870.         {

  871.             if (pData->latency > 0)

  872.             {

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

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

  875.             }

  876. 

  877.             pData->needsReset = false;

  878.         }

  879. 

  880.         // --------------------------------------------------------------------------------------------------------

  881.         // Event Input and Processing

  882. 

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

  884.         {

  885.             // ----------------------------------------------------------------------------------------------------

  886.             // Event Input (System)

  887. 

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

  889. 

  890.             uint32_t time, numEvents = pData->event.portIn->getEventCount();

  891.             uint32_t timeOffset = 0;

  892. 

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

  894.             {

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

  896. 

  897.                 time = event.time;

  898. 

  899.                 if (time >= frames)

  900.                     continue;

  901. 

  902.                 CARLA_ASSERT_INT2(time >= timeOffset, time, timeOffset);

  903. 

  904.                 if (time > timeOffset && isSampleAccurate)

  905.                 {

  906.                     if (processSingle(inBuffer, outBuffer, time - timeOffset, timeOffset))

  907.                         timeOffset = time;

  908.                 }

  909. 

  910.                 // Control change

  911.                 switch (event.type)

  912.                 {

  913.                 case kEngineEventTypeNull:

  914.                     break;

  915. 

  916.                 case kEngineEventTypeControl:

  917.                 {

  918.                     const EngineControlEvent& ctrlEvent = event.ctrl;

  919. 

  920.                     switch (ctrlEvent.type)

  921.                     {

  922.                     case kEngineControlEventTypeNull:

  923.                         break;

  924. 

  925.                     case kEngineControlEventTypeParameter:

  926.                     {

  927. #ifndef BUILD_BRIDGE

  928.                         // Control backend stuff

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

  930.                         {

  931.                             float value;

  932. 

  933.                             if (MIDI_IS_CONTROL_BREATH_CONTROLLER(ctrlEvent.param) && (pData->hints & PLUGIN_CAN_DRYWET) > 0)

  934.                             {

  935.                                 value = ctrlEvent.value;

  936.                                 setDryWet(value, false, false);

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

  938.                             }

  939. 

  940.                             if (MIDI_IS_CONTROL_CHANNEL_VOLUME(ctrlEvent.param) && (pData->hints & PLUGIN_CAN_VOLUME) > 0)

  941.                             {

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

  943.                                 setVolume(value, false, false);

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

  945.                             }

  946. 

  947.                             if (MIDI_IS_CONTROL_BALANCE(ctrlEvent.param) && (pData->hints & PLUGIN_CAN_BALANCE) > 0)

  948.                             {

  949.                                 float left, right;

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

  951. 

  952.                                 if (value < 0.0f)

  953.                                 {

  954.                                     left  = -1.0f;

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

  956.                                 }

  957.                                 else if (value > 0.0f)

  958.                                 {

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

  960.                                     right = 1.0f;

  961.                                 }

  962.                                 else

  963.                                 {

  964.                                     left  = -1.0f;

  965.                                     right = 1.0f;

  966.                                 }

  967. 

  968.                                 setBalanceLeft(left, false, false);

  969.                                 setBalanceRight(right, false, false);

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

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

  972.                             }

  973.                         }

  974. #endif

  975. 

  976.                         // Control plugin parameters

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

  978.                         {

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

  980.                                 continue;

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

  982.                                 continue;

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

  984.                                 continue;

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

  986.                                 continue;

  987. 

  988.                             float value;

  989. 

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

  991.                             {

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

  993.                             }

  994.                             else

  995.                             {

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

  997. 

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

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

  1000.                             }

  1001. 

  1002.                             setParameterValue(k, value, false, false, false);

  1003.                             pData->postponeRtEvent(kPluginPostRtEventParameterChange, static_cast<int32_t>(k), 0, value);

  1004.                         }

  1005. 

  1006.                         break;

  1007.                     }

  1008. 

  1009.                     case kEngineControlEventTypeMidiBank:

  1010.                     case kEngineControlEventTypeMidiProgram:

  1011.                     case kEngineControlEventTypeAllSoundOff:

  1012.                     case kEngineControlEventTypeAllNotesOff:

  1013.                         break;

  1014.                     }

  1015. 

  1016.                     break;

  1017.                 }

  1018. 

  1019.                 case kEngineEventTypeMidi:

  1020.                     // ignored in LADSPA

  1021.                     break;

  1022.                 }

  1023.             }

  1024. 

  1025.             pData->postRtEvents.trySplice();

  1026. 

  1027.             if (frames > timeOffset)

  1028.                 processSingle(inBuffer, outBuffer, frames - timeOffset, timeOffset);

  1029. 

  1030.         } // End of Event Input and Processing

  1031. 

  1032.         // --------------------------------------------------------------------------------------------------------

  1033.         // Plugin processing (no events)

  1034. 

  1035.         else

  1036.         {

  1037.             processSingle(inBuffer, outBuffer, frames, 0);

  1038. 

  1039.         } // End of Plugin processing (no events)

  1040. 

  1041.         CARLA_PROCESS_CONTINUE_CHECK;

  1042. 

  1043.         // --------------------------------------------------------------------------------------------------------

  1044.         // Control Output

  1045. 

  1046.         if (pData->event.portOut != nullptr)

  1047.         {

  1048.             uint8_t  channel;

  1049.             uint16_t param;

  1050.             float    value;

  1051. 

  1052.             for (uint32_t k=0; k < pData->param.count; ++k)

  1053.             {

  1054.                 if (pData->param.data[k].type != PARAMETER_OUTPUT)

  1055.                     continue;

  1056. 

  1057.                 pData->param.ranges[k].fixValue(fParamBuffers[k]);

  1058. 

  1059.                 if (pData->param.data[k].midiCC > 0)

  1060.                 {

  1061.                     channel = pData->param.data[k].midiChannel;

  1062.                     param   = static_cast<uint16_t>(pData->param.data[k].midiCC);

  1063.                     value   = pData->param.ranges[k].getNormalizedValue(fParamBuffers[k]);

  1064.                     pData->event.portOut->writeControlEvent(0, channel, kEngineControlEventTypeParameter, param, value);

  1065.                 }

  1066.             }

  1067. 

  1068.         } // End of Control Output

  1069.     }

  1070. 

  1071.     bool processSingle(float** const inBuffer, float** const outBuffer, const uint32_t frames, const uint32_t timeOffset)

  1072.     {

  1073.         CARLA_SAFE_ASSERT_RETURN(frames > 0, false);

  1074. 

  1075.         if (pData->audioIn.count > 0)

  1076.         {

  1077.             CARLA_SAFE_ASSERT_RETURN(inBuffer != nullptr, false);

  1078.         }

  1079.         if (pData->audioOut.count > 0)

  1080.         {

  1081.             CARLA_SAFE_ASSERT_RETURN(outBuffer != nullptr, false);

  1082.         }

  1083. 

  1084.         // --------------------------------------------------------------------------------------------------------

  1085.         // Try lock, silence otherwise

  1086. 

  1087.         if (pData->engine->isOffline())

  1088.         {

  1089.             pData->singleMutex.lock();

  1090.         }

  1091.         else if (! pData->singleMutex.tryLock())

  1092.         {

  1093.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1094.             {

  1095.                 for (uint32_t k=0; k < frames; ++k)

  1096.                     outBuffer[i][k+timeOffset] = 0.0f;

  1097.             }

  1098. 

  1099.             return false;

  1100.         }

  1101. 

  1102.         // --------------------------------------------------------------------------------------------------------

  1103.         // Reset audio buffers

  1104. 

  1105.         for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1106.             FLOAT_COPY(fAudioInBuffers[i], inBuffer[i]+timeOffset, frames);

  1107. 

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

  1109.             FLOAT_CLEAR(fAudioOutBuffers[i], frames);

  1110. 

  1111.         // --------------------------------------------------------------------------------------------------------

  1112.         // Run plugin

  1113. 

  1114.         fDescriptor->run(fHandle, frames);

  1115. 

  1116.         if (fHandle2 != nullptr)

  1117.             fDescriptor->run(fHandle2, frames);

  1118. 

  1119. #ifndef BUILD_BRIDGE

  1120.         // --------------------------------------------------------------------------------------------------------

  1121.         // Post-processing (dry/wet, volume and balance)

  1122. 

  1123.         {

  1124.             const bool doDryWet  = (pData->hints & PLUGIN_CAN_DRYWET) != 0 && pData->postProc.dryWet != 1.0f;

  1125.             const bool doBalance = (pData->hints & PLUGIN_CAN_BALANCE) != 0 && (pData->postProc.balanceLeft != -1.0f || pData->postProc.balanceRight != 1.0f);

  1126. 

  1127.             bool isPair;

  1128.             float bufValue, oldBufLeft[doBalance ? frames : 1];

  1129. 

  1130.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1131.             {

  1132.                 // Dry/Wet

  1133.                 if (doDryWet)

  1134.                 {

  1135.                     for (uint32_t k=0; k < frames; ++k)

  1136.                     {

  1137.                         // TODO

  1138.                         //if (k < pData->latency && pData->latency < frames)

  1139.                         //    bufValue = (pData->audioIn.count == 1) ? pData->latencyBuffers[0][k] : pData->latencyBuffers[i][k];

  1140.                         //else

  1141.                         //    bufValue = (pData->audioIn.count == 1) ? inBuffer[0][k-m_latency] : inBuffer[i][k-m_latency];

  1142. 

  1143.                         bufValue = fAudioInBuffers[(pData->audioIn.count == 1) ? 0 : i][k];

  1144.                         fAudioOutBuffers[i][k] = (fAudioOutBuffers[i][k] * pData->postProc.dryWet) + (bufValue * (1.0f - pData->postProc.dryWet));

  1145.                     }

  1146.                 }

  1147. 

  1148.                 // Balance

  1149.                 if (doBalance)

  1150.                 {

  1151.                     isPair = (i % 2 == 0);

  1152. 

  1153.                     if (isPair)

  1154.                     {

  1155.                         CARLA_ASSERT(i+1 < pData->audioOut.count);

  1156.                         FLOAT_COPY(oldBufLeft, fAudioOutBuffers[i], frames);

  1157.                     }

  1158. 

  1159.                     float balRangeL = (pData->postProc.balanceLeft  + 1.0f)/2.0f;

  1160.                     float balRangeR = (pData->postProc.balanceRight + 1.0f)/2.0f;

  1161. 

  1162.                     for (uint32_t k=0; k < frames; ++k)

  1163.                     {

  1164.                         if (isPair)

  1165.                         {

  1166.                             // left

  1167.                             fAudioOutBuffers[i][k]  = oldBufLeft[k]            * (1.0f - balRangeL);

  1168.                             fAudioOutBuffers[i][k] += fAudioOutBuffers[i+1][k] * (1.0f - balRangeR);

  1169.                         }

  1170.                         else

  1171.                         {

  1172.                             // right

  1173.                             fAudioOutBuffers[i][k]  = fAudioOutBuffers[i][k] * balRangeR;

  1174.                             fAudioOutBuffers[i][k] += oldBufLeft[k]          * balRangeL;

  1175.                         }

  1176.                     }

  1177.                 }

  1178. 

  1179.                 // Volume (and buffer copy)

  1180.                 {

  1181.                     for (uint32_t k=0; k < frames; ++k)

  1182.                         outBuffer[i][k+timeOffset] = fAudioOutBuffers[i][k] * pData->postProc.volume;

  1183.                 }

  1184.             }

  1185. 

  1186. #if 0

  1187.             // Latency, save values for next callback, TODO

  1188.             if (pData->latency > 0 && pData->latency < frames)

  1189.             {

  1190.                 for (i=0; i < pData->audioIn.count; ++i)

  1191.                     FloatVectorOperations::copy(pData->latencyBuffers[i], inBuffer[i] + (frames - pData->latency), pData->latency);

  1192.             }

  1193. #endif

  1194.         } // End of Post-processing

  1195. 

  1196. #else // BUILD_BRIDGE

  1197.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1198.         {

  1199.             for (uint32_t k=0; k < frames; ++k)

  1200.                 outBuffer[i][k+timeOffset] = fAudioOutBuffers[i][k];

  1201.         }

  1202. #endif

  1203. 

  1204.         // --------------------------------------------------------------------------------------------------------

  1205. 

  1206.         pData->singleMutex.unlock();

  1207.         return true;

  1208.     }

  1209. 

  1210.     void bufferSizeChanged(const uint32_t newBufferSize) override

  1211.     {

  1212.         CARLA_ASSERT_INT(newBufferSize > 0, newBufferSize);

  1213.         carla_debug("LadspaPlugin::bufferSizeChanged(%i) - start", newBufferSize);

  1214. 

  1215.         for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1216.         {

  1217.             if (fAudioInBuffers[i] != nullptr)

  1218.                 delete[] fAudioInBuffers[i];

  1219.             fAudioInBuffers[i] = new float[newBufferSize];

  1220.         }

  1221. 

  1222.         for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1223.         {

  1224.             if (fAudioOutBuffers[i] != nullptr)

  1225.                 delete[] fAudioOutBuffers[i];

  1226.             fAudioOutBuffers[i] = new float[newBufferSize];

  1227.         }

  1228. 

  1229.         if (fHandle2 == nullptr)

  1230.         {

  1231.             for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1232.             {

  1233.                 CARLA_ASSERT(fAudioInBuffers[i] != nullptr);

  1234.                 fDescriptor->connect_port(fHandle, pData->audioIn.ports[i].rindex, fAudioInBuffers[i]);

  1235.             }

  1236. 

  1237.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1238.             {

  1239.                 CARLA_ASSERT(fAudioOutBuffers[i] != nullptr);

  1240.                 fDescriptor->connect_port(fHandle, pData->audioOut.ports[i].rindex, fAudioOutBuffers[i]);

  1241.             }

  1242.         }

  1243.         else

  1244.         {

  1245.             if (pData->audioIn.count > 0)

  1246.             {

  1247.                 CARLA_ASSERT(pData->audioIn.count == 2);

  1248.                 CARLA_ASSERT(fAudioInBuffers[0] != nullptr);

  1249.                 CARLA_ASSERT(fAudioInBuffers[1] != nullptr);

  1250. 

  1251.                 fDescriptor->connect_port(fHandle,  pData->audioIn.ports[0].rindex, fAudioInBuffers[0]);

  1252.                 fDescriptor->connect_port(fHandle2, pData->audioIn.ports[1].rindex, fAudioInBuffers[1]);

  1253.             }

  1254. 

  1255.             if (pData->audioOut.count > 0)

  1256.             {

  1257.                 CARLA_ASSERT(pData->audioOut.count == 2);

  1258.                 CARLA_ASSERT(fAudioOutBuffers[0] != nullptr);

  1259.                 CARLA_ASSERT(fAudioOutBuffers[1] != nullptr);

  1260. 

  1261.                 fDescriptor->connect_port(fHandle,  pData->audioOut.ports[0].rindex, fAudioOutBuffers[0]);

  1262.                 fDescriptor->connect_port(fHandle2, pData->audioOut.ports[1].rindex, fAudioOutBuffers[1]);

  1263.             }

  1264.         }

  1265. 

  1266.         carla_debug("LadspaPlugin::bufferSizeChanged(%i) - end", newBufferSize);

  1267.     }

  1268. 

  1269.     void sampleRateChanged(const double newSampleRate) override

  1270.     {

  1271.         CARLA_ASSERT_INT(newSampleRate > 0.0, (int)newSampleRate);

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

  1273. 

  1274.         // TODO

  1275.         (void)newSampleRate;

  1276. 

  1277.         carla_debug("LadspaPlugin::sampleRateChanged(%g) - end", newSampleRate);

  1278.     }

  1279. 

  1280.     // -------------------------------------------------------------------

  1281.     // Plugin buffers

  1282. 

  1283.     void clearBuffers() override

  1284.     {

  1285.         carla_debug("LadspaPlugin::clearBuffers() - start");

  1286. 

  1287.         if (fAudioInBuffers != nullptr)

  1288.         {

  1289.             for (uint32_t i=0; i < pData->audioIn.count; ++i)

  1290.             {

  1291.                 if (fAudioInBuffers[i] != nullptr)

  1292.                 {

  1293.                     delete[] fAudioInBuffers[i];

  1294.                     fAudioInBuffers[i] = nullptr;

  1295.                 }

  1296.             }

  1297. 

  1298.             delete[] fAudioInBuffers;

  1299.             fAudioInBuffers = nullptr;

  1300.         }

  1301. 

  1302.         if (fAudioOutBuffers != nullptr)

  1303.         {

  1304.             for (uint32_t i=0; i < pData->audioOut.count; ++i)

  1305.             {

  1306.                 if (fAudioOutBuffers[i] != nullptr)

  1307.                 {

  1308.                     delete[] fAudioOutBuffers[i];

  1309.                     fAudioOutBuffers[i] = nullptr;

  1310.                 }

  1311.             }

  1312. 

  1313.             delete[] fAudioOutBuffers;

  1314.             fAudioOutBuffers = nullptr;

  1315.         }

  1316. 

  1317.         if (fParamBuffers != nullptr)

  1318.         {

  1319.             delete[] fParamBuffers;

  1320.             fParamBuffers = nullptr;

  1321.         }

  1322. 

  1323.         CarlaPlugin::clearBuffers();

  1324. 

  1325.         carla_debug("LadspaPlugin::clearBuffers() - end");

  1326.     }

  1327. 

  1328.     // -------------------------------------------------------------------

  1329. 

  1330.     const void* getExtraStuff() const noexcept override

  1331.     {

  1332.         return fRdfDescriptor;

  1333.     }

  1334. 

  1335.     bool init(const char* const filename, const char* const name, const char* const label, const LADSPA_RDF_Descriptor* const rdfDescriptor)

  1336.     {

  1337.         // ---------------------------------------------------------------

  1338.         // first checks

  1339. 

  1340.         if (pData->engine == nullptr)

  1341.         {

  1342.             return false;

  1343.         }

  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(lib_error(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)

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

  1407.         else if (fRdfDescriptor != nullptr && fRdfDescriptor->Title != nullptr)

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

  1409.         else if (fDescriptor->Name != nullptr)

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

  1431. 

  1432.         if (fHandle == nullptr)

  1433.         {

  1434.             pData->engine->setLastError("Plugin failed to initialize");

  1435.             return false;

  1436.         }

  1437. 

  1438.         // ---------------------------------------------------------------

  1439.         // load plugin settings

  1440. 

  1441.         {

  1442. #ifdef __USE_GNU

  1443.             const bool isDssiVst(strcasestr(pData->filename, "dssi-vst"));

  1444. #else

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

  1446. #endif

  1447. 

  1448.             // set default options

  1449.             pData->options = 0x0;

  1450. 

  1451.             if (isDssiVst)

  1452.                 pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;

  1453. 

  1454.             if (pData->engine->getOptions().forceStereo)

  1455.                 pData->options |= PLUGIN_OPTION_FORCE_STEREO;

  1456. 

  1457.             // set identifier string

  1458.             CarlaString identifier("LADSPA/");

  1459.             identifier += CarlaString(getUniqueId());

  1460.             identifier += ",";

  1461.             identifier += label;

  1462.             pData->identifier = identifier.dup();

  1463. 

  1464.             // load settings

  1465.             pData->options = pData->loadSettings(pData->options, getOptionsAvailable());

  1466. 

  1467.             // ignore settings, we need this anyway

  1468.             if (isDssiVst)

  1469.                 pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;

  1470.         }

  1471. 

  1472.         return true;

  1473.     }

  1474. 

  1475. private:

  1476.     LADSPA_Handle fHandle;

  1477.     LADSPA_Handle fHandle2;

  1478.     const LADSPA_Descriptor*     fDescriptor;

  1479.     const LADSPA_RDF_Descriptor* fRdfDescriptor;

  1480. 

  1481.     float** fAudioInBuffers;

  1482.     float** fAudioOutBuffers;

  1483.     float*  fParamBuffers;

  1484. 

  1485.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(LadspaPlugin)

  1486. };

  1487. 

  1488. CARLA_BACKEND_END_NAMESPACE

  1489. 

  1490. #else // WANT_LADSPA

  1491. # warning Building without LADSPA support

  1492. #endif

  1493. 

  1494. CARLA_BACKEND_START_NAMESPACE

  1495. 

  1496. CarlaPlugin* CarlaPlugin::newLADSPA(const Initializer& init, const LADSPA_RDF_Descriptor* const rdfDescriptor)

  1497. {

  1498.     carla_debug("CarlaPlugin::newLADSPA({%p, \"%s\", \"%s\", \"%s\"}, %p)", init.engine, init.filename, init.name, init.label, rdfDescriptor);

  1499. 

  1500. #ifdef WANT_LADSPA

  1501.     LadspaPlugin* const plugin(new LadspaPlugin(init.engine, init.id));

  1502. 

  1503.     if (! plugin->init(init.filename, init.name, init.label, rdfDescriptor))

  1504.     {

  1505.         delete plugin;

  1506.         return nullptr;

  1507.     }

  1508. 

  1509.     plugin->reload();

  1510. 

  1511.     if (init.engine->getProccessMode() == ENGINE_PROCESS_MODE_CONTINUOUS_RACK && ! plugin->canRunInRack())

  1512.     {

  1513.         init.engine->setLastError("Carla's rack mode can only work with Mono or Stereo LADSPA plugins, sorry!");

  1514.         delete plugin;

  1515.         return nullptr;

  1516.     }

  1517. 

  1518.     return plugin;

  1519. #else

  1520.     init.engine->setLastError("LADSPA support not available");

  1521.     return nullptr;

  1522. #endif

  1523. }

  1524. 

  1525. CARLA_BACKEND_END_NAMESPACE