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Audio plugin host https://kx.studio/carla
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Carla/source/backend/engine/CarlaEngine.cpp

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  1. /*

  2.  * Carla Plugin Host

  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. /* TODO:

  19.  * - complete processRack(): carefully add to input, sorted events

  20.  * - implement processPatchbay()

  21.  * - implement oscSend_control_switch_plugins()

  22.  * - proper find&load plugins

  23.  * - something about the peaks?

  24.  */

  25. 

  26. #include "CarlaEngineInternal.hpp"

  27. #include "CarlaPlugin.hpp"

  28. 

  29. #include "CarlaBackendUtils.hpp"

  30. #include "CarlaBinaryUtils.hpp"

  31. #include "CarlaEngineUtils.hpp"

  32. #include "CarlaMathUtils.hpp"

  33. #include "CarlaStateUtils.hpp"

  34. #include "CarlaMIDI.h"

  35. 

  36. #include "jackbridge/JackBridge.hpp"

  37. #include "juce_core.h"

  38. 

  39. using juce::File;

  40. using juce::MemoryOutputStream;

  41. using juce::ScopedPointer;

  42. using juce::String;

  43. using juce::XmlDocument;

  44. using juce::XmlElement;

  45. 

  46. CARLA_BACKEND_START_NAMESPACE

  47. 

  48. // -----------------------------------------------------------------------

  49. // Carla Engine

  50. 

  51. CarlaEngine::CarlaEngine()

  52.     : pData(new ProtectedData(this))

  53. {

  54.     carla_debug("CarlaEngine::CarlaEngine()");

  55. }

  56. 

  57. CarlaEngine::~CarlaEngine()

  58. {

  59.     carla_debug("CarlaEngine::~CarlaEngine()");

  60. 

  61.     delete pData;

  62. }

  63. 

  64. // -----------------------------------------------------------------------

  65. // Static calls

  66. 

  67. uint CarlaEngine::getDriverCount()

  68. {

  69.     carla_debug("CarlaEngine::getDriverCount()");

  70. 

  71.     uint count = 0;

  72. 

  73.     if (jackbridge_is_ok())

  74.         count += 1;

  75. 

  76. #ifndef BUILD_BRIDGE

  77. # if defined(CARLA_OS_MAC) || defined(CARLA_OS_WIN)

  78.     count += getJuceApiCount();

  79. # else

  80.     count += getRtAudioApiCount();

  81. # endif

  82. #endif

  83. 

  84.     return count;

  85. }

  86. 

  87. const char* CarlaEngine::getDriverName(const uint index2)

  88. {

  89.     carla_debug("CarlaEngine::getDriverName(%i)", index2);

  90. 

  91.     uint index(index2);

  92. 

  93.     if (jackbridge_is_ok() && index-- == 0)

  94.         return "JACK";

  95. 

  96. #ifndef BUILD_BRIDGE

  97. # if defined(CARLA_OS_MAC) || defined(CARLA_OS_WIN)

  98.     if (const uint count = getJuceApiCount())

  99.     {

  100.         if (index < count)

  101.             return getJuceApiName(index);

  102.         index -= count;

  103.     }

  104. # else

  105.     if (const uint count = getRtAudioApiCount())

  106.     {

  107.         if (index < count)

  108.             return getRtAudioApiName(index);

  109.         index -= count;

  110.     }

  111. # endif

  112. #endif

  113. 

  114.     carla_stderr("CarlaEngine::getDriverName(%i) - invalid index", index2);

  115.     return nullptr;

  116. }

  117. 

  118. const char* const* CarlaEngine::getDriverDeviceNames(const uint index2)

  119. {

  120.     carla_debug("CarlaEngine::getDriverDeviceNames(%i)", index2);

  121. 

  122.     uint index(index2);

  123. 

  124.     if (jackbridge_is_ok() && index-- == 0)

  125.     {

  126.         static const char* ret[3] = { "Auto-Connect OFF", "Auto-Connect ON", nullptr };

  127.         return ret;

  128.     }

  129. 

  130. #ifndef BUILD_BRIDGE

  131. # if defined(CARLA_OS_MAC) || defined(CARLA_OS_WIN)

  132.     if (const uint count = getJuceApiCount())

  133.     {

  134.         if (index < count)

  135.             return getJuceApiDeviceNames(index);

  136.         index -= count;

  137.     }

  138. # else

  139.     if (const uint count = getRtAudioApiCount())

  140.     {

  141.         if (index < count)

  142.             return getRtAudioApiDeviceNames(index);

  143.         index -= count;

  144.     }

  145. # endif

  146. #endif

  147. 

  148.     carla_stderr("CarlaEngine::getDriverDeviceNames(%i) - invalid index", index2);

  149.     return nullptr;

  150. }

  151. 

  152. const EngineDriverDeviceInfo* CarlaEngine::getDriverDeviceInfo(const uint index2, const char* const deviceName)

  153. {

  154.     carla_debug("CarlaEngine::getDriverDeviceInfo(%i, \"%s\")", index2, deviceName);

  155. 

  156.     uint index(index2);

  157. 

  158.     if (jackbridge_is_ok() && index-- == 0)

  159.     {

  160.         static uint32_t bufSizes[11] = { 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 0 };

  161.         static EngineDriverDeviceInfo devInfo;

  162.         devInfo.hints       = ENGINE_DRIVER_DEVICE_VARIABLE_BUFFER_SIZE;

  163.         devInfo.bufferSizes = bufSizes;

  164.         devInfo.sampleRates = nullptr;

  165.         return &devInfo;

  166.     }

  167. 

  168. #ifndef BUILD_BRIDGE

  169. # if defined(CARLA_OS_MAC) || defined(CARLA_OS_WIN)

  170.     if (const uint count = getJuceApiCount())

  171.     {

  172.         if (index < count)

  173.             return getJuceDeviceInfo(index, deviceName);

  174.         index -= count;

  175.     }

  176. # else

  177.     if (const uint count = getRtAudioApiCount())

  178.     {

  179.         if (index < count)

  180.             return getRtAudioDeviceInfo(index, deviceName);

  181.         index -= count;

  182.     }

  183. # endif

  184. #endif

  185. 

  186.     carla_stderr("CarlaEngine::getDriverDeviceNames(%i, \"%s\") - invalid index", index2, deviceName);

  187.     return nullptr;

  188. }

  189. 

  190. CarlaEngine* CarlaEngine::newDriverByName(const char* const driverName)

  191. {

  192.     CARLA_SAFE_ASSERT_RETURN(driverName != nullptr && driverName[0] != '\0', nullptr);

  193.     carla_debug("CarlaEngine::newDriverByName(\"%s\")", driverName);

  194. 

  195.     if (std::strcmp(driverName, "JACK") == 0)

  196.         return newJack();

  197. 

  198. #ifndef BUILD_BRIDGE

  199. # if defined(CARLA_OS_MAC) || defined(CARLA_OS_WIN)

  200.     // -------------------------------------------------------------------

  201.     // macos

  202. 

  203.     if (std::strcmp(driverName, "CoreAudio") == 0)

  204.         return newJuce(AUDIO_API_CORE);

  205. 

  206.     // -------------------------------------------------------------------

  207.     // windows

  208. 

  209.     if (std::strcmp(driverName, "ASIO") == 0)

  210.         return newJuce(AUDIO_API_ASIO);

  211.     if (std::strcmp(driverName, "DirectSound") == 0)

  212.         return newJuce(AUDIO_API_DS);

  213. #else

  214.     // -------------------------------------------------------------------

  215.     // common

  216. 

  217.     if (std::strncmp(driverName, "JACK ", 5) == 0)

  218.         return newRtAudio(AUDIO_API_JACK);

  219. 

  220.     // -------------------------------------------------------------------

  221.     // linux

  222. 

  223.     if (std::strcmp(driverName, "ALSA") == 0)

  224.         return newRtAudio(AUDIO_API_ALSA);

  225.     if (std::strcmp(driverName, "OSS") == 0)

  226.         return newRtAudio(AUDIO_API_OSS);

  227.     if (std::strcmp(driverName, "PulseAudio") == 0)

  228.         return newRtAudio(AUDIO_API_PULSE);

  229. # endif

  230. #endif

  231. 

  232.     carla_stderr("CarlaEngine::newDriverByName(\"%s\") - invalid driver name", driverName);

  233.     return nullptr;

  234. }

  235. 

  236. // -----------------------------------------------------------------------

  237. // Constant values

  238. 

  239. uint CarlaEngine::getMaxClientNameSize() const noexcept

  240. {

  241.     return STR_MAX/2;

  242. }

  243. 

  244. uint CarlaEngine::getMaxPortNameSize() const noexcept

  245. {

  246.     return STR_MAX;

  247. }

  248. 

  249. uint CarlaEngine::getCurrentPluginCount() const noexcept

  250. {

  251.     return pData->curPluginCount;

  252. }

  253. 

  254. uint CarlaEngine::getMaxPluginNumber() const noexcept

  255. {

  256.     return pData->maxPluginNumber;

  257. }

  258. 

  259. // -----------------------------------------------------------------------

  260. // Virtual, per-engine type calls

  261. 

  262. bool CarlaEngine::init(const char* const clientName)

  263. {

  264.     carla_debug("CarlaEngine::init(\"%s\")", clientName);

  265. 

  266.     if (! pData->init(clientName))

  267.         return false;

  268. 

  269.     callback(ENGINE_CALLBACK_ENGINE_STARTED, 0, pData->options.processMode, pData->options.transportMode, 0.0f, getCurrentDriverName());

  270.     return true;

  271. }

  272. 

  273. bool CarlaEngine::close()

  274. {

  275.     carla_debug("CarlaEngine::close()");

  276. 

  277.     if (pData->curPluginCount != 0)

  278.     {

  279.         pData->aboutToClose = true;

  280.         removeAllPlugins();

  281.     }

  282. 

  283. #ifndef BUILD_BRIDGE

  284.     if (pData->osc.isControlRegistered())

  285.         oscSend_control_exit();

  286. #endif

  287. 

  288.     pData->close();

  289. 

  290.     callback(ENGINE_CALLBACK_ENGINE_STOPPED, 0, 0, 0, 0.0f, nullptr);

  291.     return true;

  292. }

  293. 

  294. void CarlaEngine::idle() noexcept

  295. {

  296.     CARLA_SAFE_ASSERT_RETURN(pData->nextAction.opcode == kEnginePostActionNull,); // FIXME REMOVE

  297.     CARLA_SAFE_ASSERT_RETURN(pData->nextPluginId == pData->maxPluginNumber,);

  298. 

  299.     for (uint i=0; i < pData->curPluginCount; ++i)

  300.     {

  301.         CarlaPlugin* const plugin(pData->plugins[i].plugin);

  302. 

  303.         if (plugin != nullptr && plugin->isEnabled())

  304.         {

  305.             try {

  306.                 plugin->idle();

  307.             } CARLA_SAFE_EXCEPTION_CONTINUE("Plugin idle");

  308.         }

  309.     }

  310. 

  311.     pData->osc.idle();

  312. }

  313. 

  314. CarlaEngineClient* CarlaEngine::addClient(CarlaPlugin* const)

  315. {

  316.     return new CarlaEngineClient(*this);

  317. }

  318. 

  319. // -----------------------------------------------------------------------

  320. // Plugin management

  321. 

  322. bool CarlaEngine::addPlugin(const BinaryType btype, const PluginType ptype, const char* const filename, const char* const name, const char* const label, const int64_t uniqueId, const void* const extra)

  323. {

  324.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->isIdling == 0, "An operation is still being processed, please wait for it to finish");

  325.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->plugins != nullptr, "Invalid engine internal data");

  326.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->nextPluginId <= pData->maxPluginNumber, "Invalid engine internal data");

  327.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->nextAction.opcode == kEnginePostActionNull, "Invalid engine internal data");

  328.     CARLA_SAFE_ASSERT_RETURN_ERR(btype != BINARY_NONE, "Invalid plugin binary mode");

  329.     CARLA_SAFE_ASSERT_RETURN_ERR(ptype != PLUGIN_NONE, "Invalid plugin type");

  330.     CARLA_SAFE_ASSERT_RETURN_ERR((filename != nullptr && filename[0] != '\0') || (label != nullptr && label[0] != '\0'), "Invalid plugin filename and label");

  331.     carla_debug("CarlaEngine::addPlugin(%i:%s, %i:%s, \"%s\", \"%s\", \"%s\", " P_INT64 ", %p)", btype, BinaryType2Str(btype), ptype, PluginType2Str(ptype), filename, name, label, uniqueId, extra);

  332. 

  333.     uint id;

  334. 

  335. #ifndef BUILD_BRIDGE

  336.     CarlaPlugin* oldPlugin = nullptr;

  337. 

  338.     if (pData->nextPluginId < pData->curPluginCount)

  339.     {

  340.         id = pData->nextPluginId;

  341.         pData->nextPluginId = pData->maxPluginNumber;

  342. 

  343.         oldPlugin = pData->plugins[id].plugin;

  344. 

  345.         CARLA_SAFE_ASSERT_RETURN_ERR(oldPlugin != nullptr, "Invalid replace plugin Id");

  346.     }

  347.     else

  348. #endif

  349.     {

  350.         id = pData->curPluginCount;

  351. 

  352.         if (id == pData->maxPluginNumber)

  353.         {

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

  355.             return false;

  356.         }

  357. 

  358.         CARLA_SAFE_ASSERT_RETURN_ERR(pData->plugins[id].plugin == nullptr, "Invalid engine internal data");

  359.     }

  360. 

  361.     CarlaPlugin::Initializer initializer = {

  362.         this,

  363.         id,

  364.         filename,

  365.         name,

  366.         label,

  367.         uniqueId

  368.     };

  369. 

  370.     CarlaPlugin* plugin = nullptr;

  371. 

  372. #ifndef BUILD_BRIDGE

  373.     CarlaString bridgeBinary(pData->options.binaryDir);

  374. 

  375.     if (bridgeBinary.isNotEmpty())

  376.     {

  377. # ifndef CARLA_OS_WIN

  378.         if (btype == BINARY_NATIVE)

  379.         {

  380.             bridgeBinary += CARLA_OS_SEP_STR "carla-bridge-native";

  381.         }

  382.         else

  383. # endif

  384.         {

  385.             switch (btype)

  386.             {

  387.             case BINARY_POSIX32:

  388.                 bridgeBinary += CARLA_OS_SEP_STR "carla-bridge-posix32";

  389.                 break;

  390.             case BINARY_POSIX64:

  391.                 bridgeBinary += CARLA_OS_SEP_STR "carla-bridge-posix64";

  392.                 break;

  393.             case BINARY_WIN32:

  394.                 bridgeBinary += CARLA_OS_SEP_STR "carla-bridge-win32.exe";

  395.                 break;

  396.             case BINARY_WIN64:

  397.                 bridgeBinary += CARLA_OS_SEP_STR "carla-bridge-win64.exe";

  398.                 break;

  399.             default:

  400.                 bridgeBinary.clear();

  401.                 break;

  402.             }

  403.         }

  404. 

  405.         if (! File(bridgeBinary.buffer()).existsAsFile())

  406.             bridgeBinary.clear();

  407.     }

  408. 

  409.     if (ptype != PLUGIN_INTERNAL && (btype != BINARY_NATIVE || (pData->options.preferPluginBridges && bridgeBinary.isNotEmpty())))

  410.     {

  411.         if (bridgeBinary.isNotEmpty())

  412.         {

  413.             plugin = CarlaPlugin::newBridge(initializer, btype, ptype, bridgeBinary);

  414.         }

  415. # ifdef CARLA_OS_LINUX

  416.         // fallback to dssi-vst if possible

  417.         else if (btype == BINARY_WIN32 && File("/usr/lib/dssi/dssi-vst.so").existsAsFile())

  418.         {

  419.             File file(filename);

  420. 

  421.             CarlaString label2(file.getFileName().toRawUTF8());

  422.             label2.replace(' ', '*');

  423. 

  424.             CarlaPlugin::Initializer init2 = {

  425.                 this,

  426.                 id,

  427.                 "/usr/lib/dssi/dssi-vst.so",

  428.                 name,

  429.                 label2,

  430.                 uniqueId

  431.             };

  432. 

  433.             char* const oldVstPath(getenv("VST_PATH"));

  434.             carla_setenv("VST_PATH", file.getParentDirectory().getFullPathName().toRawUTF8());

  435. 

  436.             plugin = CarlaPlugin::newDSSI(init2);

  437. 

  438.             if (oldVstPath != nullptr)

  439.                 carla_setenv("VST_PATH", oldVstPath);

  440.         }

  441. # endif

  442.         else

  443.         {

  444.             setLastError("This Carla build cannot handle this binary");

  445.             return false;

  446.         }

  447.     }

  448.     else

  449. #endif // ! BUILD_BRIDGE

  450.     {

  451.         bool use16Outs;

  452.         setLastError("Invalid or unsupported plugin type");

  453. 

  454.         switch (ptype)

  455.         {

  456.         case PLUGIN_NONE:

  457.             break;

  458. 

  459.         case PLUGIN_INTERNAL:

  460.             /*if (std::strcmp(label, "FluidSynth") == 0)

  461.             {

  462.                 use16Outs = (extra != nullptr && std::strcmp((const char*)extra, "true") == 0);

  463.                 plugin = CarlaPlugin::newFluidSynth(initializer, use16Outs);

  464.             }

  465.             else if (std::strcmp(label, "LinuxSampler (GIG)") == 0)

  466.             {

  467.                 use16Outs = (extra != nullptr && std::strcmp((const char*)extra, "true") == 0);

  468.                 plugin = CarlaPlugin::newLinuxSampler(initializer, "GIG", use16Outs);

  469.             }

  470.             else if (std::strcmp(label, "LinuxSampler (SF2)") == 0)

  471.             {

  472.                 use16Outs = (extra != nullptr && std::strcmp((const char*)extra, "true") == 0);

  473.                 plugin = CarlaPlugin::newLinuxSampler(initializer, "SF2", use16Outs);

  474.             }

  475.             else if (std::strcmp(label, "LinuxSampler (SFZ)") == 0)

  476.             {

  477.                 use16Outs = (extra != nullptr && std::strcmp((const char*)extra, "true") == 0);

  478.                 plugin = CarlaPlugin::newLinuxSampler(initializer, "SFZ", use16Outs);

  479.             }*/

  480.             plugin = CarlaPlugin::newNative(initializer);

  481.             break;

  482. 

  483.         case PLUGIN_LADSPA:

  484.             plugin = CarlaPlugin::newLADSPA(initializer, (const LADSPA_RDF_Descriptor*)extra);

  485.             break;

  486. 

  487.         case PLUGIN_DSSI:

  488.             plugin = CarlaPlugin::newDSSI(initializer);

  489.             break;

  490. 

  491.         case PLUGIN_LV2:

  492.             plugin = CarlaPlugin::newLV2(initializer);

  493.             break;

  494. 

  495.         case PLUGIN_VST:

  496.             plugin = CarlaPlugin::newVST(initializer);

  497.             break;

  498. 

  499.         case PLUGIN_VST3:

  500.             plugin = CarlaPlugin::newVST3(initializer);

  501.             break;

  502. 

  503.         case PLUGIN_AU:

  504.             plugin = CarlaPlugin::newAU(initializer);

  505.             break;

  506. 

  507.         case PLUGIN_GIG:

  508.             use16Outs = (extra != nullptr && std::strcmp((const char*)extra, "true") == 0);

  509.             plugin = CarlaPlugin::newFileGIG(initializer, use16Outs);

  510.             break;

  511. 

  512.         case PLUGIN_SF2:

  513.             use16Outs = (extra != nullptr && std::strcmp((const char*)extra, "true") == 0);

  514.             plugin = CarlaPlugin::newFileSF2(initializer, use16Outs);

  515.             break;

  516. 

  517.         case PLUGIN_SFZ:

  518.             plugin = CarlaPlugin::newFileSFZ(initializer);

  519.             break;

  520.         }

  521.     }

  522. 

  523.     if (plugin == nullptr)

  524.         return false;

  525. 

  526.     plugin->registerToOscClient();

  527. 

  528.     EnginePluginData& pluginData(pData->plugins[id]);

  529.     pluginData.plugin      = plugin;

  530.     pluginData.insPeak[0]  = 0.0f;

  531.     pluginData.insPeak[1]  = 0.0f;

  532.     pluginData.outsPeak[0] = 0.0f;

  533.     pluginData.outsPeak[1] = 0.0f;

  534. 

  535. #ifndef BUILD_BRIDGE

  536.     if (oldPlugin != nullptr)

  537.     {

  538.         // the engine thread might be reading from the old plugin

  539.         pData->thread.stopThread(500);

  540.         pData->thread.startThread();

  541. 

  542.         const bool  wasActive = oldPlugin->getInternalParameterValue(PARAMETER_ACTIVE) >= 0.5f;

  543.         const float oldDryWet = oldPlugin->getInternalParameterValue(PARAMETER_DRYWET);

  544.         const float oldVolume = oldPlugin->getInternalParameterValue(PARAMETER_VOLUME);

  545. 

  546.         delete oldPlugin;

  547. 

  548.         if (plugin->getHints() & PLUGIN_CAN_DRYWET)

  549.             plugin->setDryWet(oldDryWet, true, true);

  550. 

  551.         if (plugin->getHints() & PLUGIN_CAN_VOLUME)

  552.             plugin->setVolume(oldVolume, true, true);

  553. 

  554.         if (wasActive)

  555.             plugin->setActive(true, true, true);

  556. 

  557.         callback(ENGINE_CALLBACK_RELOAD_ALL, id, 0, 0, 0.0f, nullptr);

  558.     }

  559.     else

  560. #endif

  561.     {

  562.         ++pData->curPluginCount;

  563.         callback(ENGINE_CALLBACK_PLUGIN_ADDED, id, 0, 0, 0.0f, plugin->getName());

  564.     }

  565. 

  566.     return true;

  567. }

  568. 

  569. bool CarlaEngine::addPlugin(const PluginType ptype, const char* const filename, const char* const name, const char* const label, const int64_t uniqueId, const void* const extra)

  570. {

  571.     return addPlugin(BINARY_NATIVE, ptype, filename, name, label, uniqueId, extra);

  572. }

  573. 

  574. bool CarlaEngine::removePlugin(const uint id)

  575. {

  576.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->isIdling == 0, "An operation is still being processed, please wait for it to finish");

  577.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->plugins != nullptr, "Invalid engine internal data");

  578.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->curPluginCount != 0, "Invalid engine internal data");

  579.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->nextAction.opcode == kEnginePostActionNull, "Invalid engine internal data");

  580.     CARLA_SAFE_ASSERT_RETURN_ERR(id < pData->curPluginCount, "Invalid plugin Id");

  581.     carla_debug("CarlaEngine::removePlugin(%i)", id);

  582. 

  583.     CarlaPlugin* const plugin(pData->plugins[id].plugin);

  584. 

  585.     CARLA_SAFE_ASSERT_RETURN_ERR(plugin != nullptr, "Could not find plugin to remove");

  586.     CARLA_SAFE_ASSERT_RETURN_ERR(plugin->getId() == id, "Invalid engine internal data");

  587. 

  588.     pData->thread.stopThread(500);

  589. 

  590. #ifndef BUILD_BRIDGE

  591.     const bool lockWait(isRunning() && pData->options.processMode != ENGINE_PROCESS_MODE_MULTIPLE_CLIENTS);

  592.     const ScopedActionLock sal(pData, kEnginePostActionRemovePlugin, id, 0, lockWait);

  593. 

  594.     for (uint i=id; i < pData->curPluginCount; ++i)

  595.     {

  596.         CarlaPlugin* const plugin2(pData->plugins[i].plugin);

  597.         CARLA_SAFE_ASSERT_BREAK(plugin2 != nullptr);

  598.         plugin2->updateOscURL();

  599.     }

  600. 

  601.     if (isOscControlRegistered())

  602.         oscSend_control_remove_plugin(id);

  603. #else

  604.     pData->curPluginCount = 0;

  605.     carla_zeroStruct(pData->plugins, 1);

  606. #endif

  607. 

  608.     delete plugin;

  609. 

  610.     if (isRunning() && ! pData->aboutToClose)

  611.         pData->thread.startThread();

  612. 

  613.     callback(ENGINE_CALLBACK_PLUGIN_REMOVED, id, 0, 0, 0.0f, nullptr);

  614.     return true;

  615. }

  616. 

  617. bool CarlaEngine::removeAllPlugins()

  618. {

  619.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->isIdling == 0, "An operation is still being processed, please wait for it to finish");

  620.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->plugins != nullptr, "Invalid engine internal data");

  621.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->nextPluginId == pData->maxPluginNumber, "Invalid engine internal data");

  622.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->nextAction.opcode == kEnginePostActionNull, "Invalid engine internal data");

  623.     carla_debug("CarlaEngine::removeAllPlugins()");

  624. 

  625.     if (pData->curPluginCount == 0)

  626.         return true;

  627. 

  628.     pData->thread.stopThread(500);

  629. 

  630.     const uint32_t curPluginCount(pData->curPluginCount);

  631. 

  632.     const bool lockWait(isRunning());

  633.     const ScopedActionLock sal(pData, kEnginePostActionZeroCount, 0, 0, lockWait);

  634. 

  635.     callback(ENGINE_CALLBACK_IDLE, 0, 0, 0, 0.0f, nullptr);

  636. 

  637.     for (uint i=0; i < curPluginCount; ++i)

  638.     {

  639.         EnginePluginData& pluginData(pData->plugins[i]);

  640. 

  641.         if (pluginData.plugin != nullptr)

  642.         {

  643.             delete pluginData.plugin;

  644.             pluginData.plugin = nullptr;

  645.         }

  646. 

  647.         pluginData.insPeak[0]  = 0.0f;

  648.         pluginData.insPeak[1]  = 0.0f;

  649.         pluginData.outsPeak[0] = 0.0f;

  650.         pluginData.outsPeak[1] = 0.0f;

  651. 

  652.         callback(ENGINE_CALLBACK_IDLE, 0, 0, 0, 0.0f, nullptr);

  653.     }

  654. 

  655.     if (isRunning() && ! pData->aboutToClose)

  656.         pData->thread.startThread();

  657. 

  658.     return true;

  659. }

  660. 

  661. #ifndef BUILD_BRIDGE

  662. const char* CarlaEngine::renamePlugin(const uint id, const char* const newName)

  663. {

  664.     CARLA_SAFE_ASSERT_RETURN_ERRN(pData->isIdling == 0, "An operation is still being processed, please wait for it to finish");

  665.     CARLA_SAFE_ASSERT_RETURN_ERRN(pData->plugins != nullptr, "Invalid engine internal data");

  666.     CARLA_SAFE_ASSERT_RETURN_ERRN(pData->curPluginCount != 0, "Invalid engine internal data");

  667.     CARLA_SAFE_ASSERT_RETURN_ERRN(pData->nextAction.opcode == kEnginePostActionNull, "Invalid engine internal data");

  668.     CARLA_SAFE_ASSERT_RETURN_ERRN(id < pData->curPluginCount, "Invalid plugin Id");

  669.     CARLA_SAFE_ASSERT_RETURN_ERRN(newName != nullptr && newName[0] != '\0', "Invalid plugin name");

  670.     carla_debug("CarlaEngine::renamePlugin(%i, \"%s\")", id, newName);

  671. 

  672.     CarlaPlugin* const plugin(pData->plugins[id].plugin);

  673. 

  674.     CARLA_SAFE_ASSERT_RETURN_ERRN(plugin != nullptr, "Could not find plugin to rename");

  675.     CARLA_SAFE_ASSERT_RETURN_ERRN(plugin->getId() == id, "Invalid engine internal data");

  676. 

  677.     if (const char* const name = getUniquePluginName(newName))

  678.     {

  679.         plugin->setName(name);

  680.         return name;

  681.     }

  682. 

  683.     setLastError("Unable to get new unique plugin name");

  684.     return nullptr;

  685. }

  686. 

  687. bool CarlaEngine::clonePlugin(const uint id)

  688. {

  689.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->isIdling == 0, "An operation is still being processed, please wait for it to finish");

  690.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->plugins != nullptr, "Invalid engine internal data");

  691.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->curPluginCount != 0, "Invalid engine internal data");

  692.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->nextAction.opcode == kEnginePostActionNull, "Invalid engine internal data");

  693.     CARLA_SAFE_ASSERT_RETURN_ERR(id < pData->curPluginCount, "Invalid plugin Id");

  694.     carla_debug("CarlaEngine::clonePlugin(%i)", id);

  695. 

  696.     CarlaPlugin* const plugin(pData->plugins[id].plugin);

  697. 

  698.     CARLA_SAFE_ASSERT_RETURN_ERR(plugin != nullptr, "Could not find plugin to clone");

  699.     CARLA_SAFE_ASSERT_RETURN_ERR(plugin->getId() == id, "Invalid engine internal data");

  700. 

  701.     char label[STR_MAX+1];

  702.     carla_zeroChar(label, STR_MAX+1);

  703.     plugin->getLabel(label);

  704. 

  705.     const uint pluginCountBefore(pData->curPluginCount);

  706. 

  707.     if (! addPlugin(plugin->getBinaryType(), plugin->getType(), plugin->getFilename(), plugin->getName(), label, plugin->getUniqueId(), plugin->getExtraStuff()))

  708.         return false;

  709. 

  710.     CARLA_SAFE_ASSERT_RETURN_ERR(pluginCountBefore+1 == pData->curPluginCount, "No new plugin found");

  711. 

  712.     if (CarlaPlugin* const newPlugin = pData->plugins[pluginCountBefore].plugin)

  713.         newPlugin->loadStateSave(plugin->getStateSave());

  714. 

  715.     return true;

  716. }

  717. 

  718. bool CarlaEngine::replacePlugin(const uint id) noexcept

  719. {

  720.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->isIdling == 0, "An operation is still being processed, please wait for it to finish");

  721.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->plugins != nullptr, "Invalid engine internal data");

  722.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->curPluginCount != 0, "Invalid engine internal data");

  723.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->nextAction.opcode == kEnginePostActionNull, "Invalid engine internal data");

  724.     carla_debug("CarlaEngine::replacePlugin(%i)", id);

  725. 

  726.     // might use this to reset

  727.     if (id == pData->curPluginCount || id == pData->maxPluginNumber)

  728.     {

  729.         pData->nextPluginId = pData->maxPluginNumber;

  730.         return true;

  731.     }

  732. 

  733.     CARLA_SAFE_ASSERT_RETURN_ERR(id < pData->curPluginCount, "Invalid plugin Id");

  734. 

  735.     CarlaPlugin* const plugin(pData->plugins[id].plugin);

  736. 

  737.     CARLA_SAFE_ASSERT_RETURN_ERR(plugin != nullptr, "Could not find plugin to replace");

  738.     CARLA_SAFE_ASSERT_RETURN_ERR(plugin->getId() == id, "Invalid engine internal data");

  739. 

  740.     pData->nextPluginId = id;

  741. 

  742.     return true;

  743. }

  744. 

  745. bool CarlaEngine::switchPlugins(const uint idA, const uint idB) noexcept

  746. {

  747.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->isIdling == 0, "An operation is still being processed, please wait for it to finish");

  748.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->plugins != nullptr, "Invalid engine internal data");

  749.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->curPluginCount >= 2, "Invalid engine internal data");

  750.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->nextAction.opcode == kEnginePostActionNull, "Invalid engine internal data");

  751.     CARLA_SAFE_ASSERT_RETURN_ERR(idA != idB, "Invalid operation, cannot switch plugin with itself");

  752.     CARLA_SAFE_ASSERT_RETURN_ERR(idA < pData->curPluginCount, "Invalid plugin Id");

  753.     CARLA_SAFE_ASSERT_RETURN_ERR(idB < pData->curPluginCount, "Invalid plugin Id");

  754.     carla_debug("CarlaEngine::switchPlugins(%i)", idA, idB);

  755. 

  756.     CarlaPlugin* const pluginA(pData->plugins[idA].plugin);

  757.     CarlaPlugin* const pluginB(pData->plugins[idB].plugin);

  758. 

  759.     CARLA_SAFE_ASSERT_RETURN_ERR(pluginA != nullptr, "Could not find plugin to switch");

  760.     CARLA_SAFE_ASSERT_RETURN_ERR(pluginA != nullptr, "Could not find plugin to switch");

  761.     CARLA_SAFE_ASSERT_RETURN_ERR(pluginA->getId() == idA, "Invalid engine internal data");

  762.     CARLA_SAFE_ASSERT_RETURN_ERR(pluginB->getId() == idB, "Invalid engine internal data");

  763. 

  764.     pData->thread.stopThread(500);

  765. 

  766.     const bool lockWait(isRunning() && pData->options.processMode != ENGINE_PROCESS_MODE_MULTIPLE_CLIENTS);

  767.     const ScopedActionLock sal(pData, kEnginePostActionSwitchPlugins, idA, idB, lockWait);

  768. 

  769.     if (CarlaPlugin* const plugin = pData->plugins[idA].plugin)

  770.         plugin->updateOscURL();

  771. 

  772.     if (CarlaPlugin* const plugin = pData->plugins[idB].plugin)

  773.         plugin->updateOscURL();

  774. 

  775.     // TODO

  776.     //if (isOscControlRegistered())

  777.     //    oscSend_control_switch_plugins(idA, idB);

  778. 

  779.     if (isRunning() && ! pData->aboutToClose)

  780.         pData->thread.startThread();

  781. 

  782.     return true;

  783. }

  784. #endif

  785. 

  786. CarlaPlugin* CarlaEngine::getPlugin(const uint id) const noexcept

  787. {

  788.     CARLA_SAFE_ASSERT_RETURN_ERRN(pData->plugins != nullptr, "Invalid engine internal data");

  789.     CARLA_SAFE_ASSERT_RETURN_ERRN(pData->curPluginCount != 0, "Invalid engine internal data");

  790.     CARLA_SAFE_ASSERT_RETURN_ERRN(pData->nextAction.opcode == kEnginePostActionNull, "Invalid engine internal data");

  791.     CARLA_SAFE_ASSERT_RETURN_ERRN(id < pData->curPluginCount, "Invalid plugin Id");

  792. 

  793.     return pData->plugins[id].plugin;

  794. }

  795. 

  796. CarlaPlugin* CarlaEngine::getPluginUnchecked(const uint id) const noexcept

  797. {

  798.     return pData->plugins[id].plugin;

  799. }

  800. 

  801. const char* CarlaEngine::getUniquePluginName(const char* const name) const

  802. {

  803.     CARLA_SAFE_ASSERT_RETURN(pData->nextAction.opcode == kEnginePostActionNull, nullptr);

  804.     CARLA_SAFE_ASSERT_RETURN(name != nullptr && name[0] != '\0', nullptr);

  805.     carla_debug("CarlaEngine::getUniquePluginName(\"%s\")", name);

  806. 

  807.     CarlaString sname;

  808.     sname = name;

  809. 

  810.     if (sname.isEmpty())

  811.     {

  812.         sname = "(No name)";

  813.         return sname.dup();

  814.     }

  815. 

  816.     const size_t maxNameSize(carla_min<uint>(getMaxClientNameSize(), 0xff, 6) - 6); // 6 = strlen(" (10)") + 1

  817. 

  818.     if (maxNameSize == 0 || ! isRunning())

  819.         return sname.dup();

  820. 

  821.     sname.truncate(maxNameSize);

  822.     sname.replace(':', '.'); // ':' is used in JACK1 to split client/port names

  823. 

  824.     for (uint i=0; i < pData->curPluginCount; ++i)

  825.     {

  826.         CARLA_SAFE_ASSERT_BREAK(pData->plugins[i].plugin != nullptr);

  827. 

  828.         // Check if unique name doesn't exist

  829.         if (const char* const pluginName = pData->plugins[i].plugin->getName())

  830.         {

  831.             if (sname != pluginName)

  832.                 continue;

  833.         }

  834. 

  835.         // Check if string has already been modified

  836.         {

  837.             const size_t len(sname.length());

  838. 

  839.             // 1 digit, ex: " (2)"

  840.             if (sname[len-4] == ' ' && sname[len-3] == '(' && sname.isDigit(len-2) && sname[len-1] == ')')

  841.             {

  842.                 int number = sname[len-2] - '0';

  843. 

  844.                 if (number == 9)

  845.                 {

  846.                     // next number is 10, 2 digits

  847.                     sname.truncate(len-4);

  848.                     sname += " (10)";

  849.                     //sname.replace(" (9)", " (10)");

  850.                 }

  851.                 else

  852.                     sname[len-2] = char('0' + number + 1);

  853. 

  854.                 continue;

  855.             }

  856. 

  857.             // 2 digits, ex: " (11)"

  858.             if (sname[len-5] == ' ' && sname[len-4] == '(' && sname.isDigit(len-3) && sname.isDigit(len-2) && sname[len-1] == ')')

  859.             {

  860.                 char n2 = sname[len-2];

  861.                 char n3 = sname[len-3];

  862. 

  863.                 if (n2 == '9')

  864.                 {

  865.                     n2 = '0';

  866.                     n3 = static_cast<char>(n3 + 1);

  867.                 }

  868.                 else

  869.                     n2 = static_cast<char>(n2 + 1);

  870. 

  871.                 sname[len-2] = n2;

  872.                 sname[len-3] = n3;

  873. 

  874.                 continue;

  875.             }

  876.         }

  877. 

  878.         // Modify string if not

  879.         sname += " (2)";

  880.     }

  881. 

  882.     return sname.dup();

  883. }

  884. 

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

  886. // Project management

  887. 

  888. bool CarlaEngine::loadFile(const char* const filename)

  889. {

  890.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->isIdling == 0, "An operation is still being processed, please wait for it to finish");

  891.     CARLA_SAFE_ASSERT_RETURN_ERR(filename != nullptr && filename[0] != '\0', "Invalid filename");

  892.     carla_debug("CarlaEngine::loadFile(\"%s\")", filename);

  893. 

  894.     File file(filename);

  895.     CARLA_SAFE_ASSERT_RETURN_ERR(file.existsAsFile(), "Requested file does not exist or is not a readable file");

  896. 

  897.     CarlaString baseName(file.getFileName().toRawUTF8());

  898.     CarlaString extension(file.getFileExtension().replace(".","").toLowerCase().toRawUTF8());

  899. 

  900.     // -------------------------------------------------------------------

  901. 

  902.     if (extension == "carxp" || extension == "carxs")

  903.         return loadProject(filename);

  904. 

  905.     // -------------------------------------------------------------------

  906. 

  907.     if (extension == "gig")

  908.         return addPlugin(PLUGIN_GIG, filename, baseName, baseName, 0, nullptr);

  909. 

  910.     if (extension == "sf2")

  911.         return addPlugin(PLUGIN_SF2, filename, baseName, baseName, 0, nullptr);

  912. 

  913.     if (extension == "sfz")

  914.         return addPlugin(PLUGIN_SFZ, filename, baseName, baseName, 0, nullptr);

  915. 

  916.     // -------------------------------------------------------------------

  917. 

  918.     if (extension == "aif" || extension == "aiff" || extension == "bwf" || extension == "flac" || extension == "ogg" || extension == "wav")

  919.     {

  920.         if (addPlugin(PLUGIN_INTERNAL, nullptr, baseName, "audiofile", 0, nullptr))

  921.         {

  922.             if (CarlaPlugin* const plugin = getPlugin(pData->curPluginCount-1))

  923.                 plugin->setCustomData(CUSTOM_DATA_TYPE_STRING, "file", filename, true);

  924.             return true;

  925.         }

  926.         return false;

  927.     }

  928. 

  929.     // -------------------------------------------------------------------

  930. 

  931.     if (extension == "mid" || extension == "midi")

  932.     {

  933.         if (addPlugin(PLUGIN_INTERNAL, nullptr, baseName, "midifile", 0, nullptr))

  934.         {

  935.             if (CarlaPlugin* const plugin = getPlugin(pData->curPluginCount-1))

  936.                 plugin->setCustomData(CUSTOM_DATA_TYPE_STRING, "file", filename, true);

  937.             return true;

  938.         }

  939.         return false;

  940.     }

  941. 

  942.     // -------------------------------------------------------------------

  943.     // ZynAddSubFX

  944. 

  945.     if (extension == "xmz" || extension == "xiz")

  946.     {

  947. #ifdef WANT_ZYNADDSUBFX

  948.         if (addPlugin(PLUGIN_INTERNAL, nullptr, baseName, "zynaddsubfx", 0, nullptr))

  949.         {

  950.             if (CarlaPlugin* const plugin = getPlugin(pData->curPluginCount-1))

  951.                 plugin->setCustomData(CUSTOM_DATA_TYPE_STRING, (extension == "xmz") ? "CarlaAlternateFile1" : "CarlaAlternateFile2", filename, true);

  952.             return true;

  953.         }

  954.         return false;

  955. #else

  956.         setLastError("This Carla build does not have ZynAddSubFX support");

  957.         return false;

  958. #endif

  959.     }

  960. 

  961.     // -------------------------------------------------------------------

  962. 

  963.     setLastError("Unknown file extension");

  964.     return false;

  965. }

  966. 

  967. bool CarlaEngine::loadProject(const char* const filename)

  968. {

  969.     CARLA_SAFE_ASSERT_RETURN_ERR(pData->isIdling == 0, "An operation is still being processed, please wait for it to finish");

  970.     CARLA_SAFE_ASSERT_RETURN_ERR(filename != nullptr && filename[0] != '\0', "Invalid filename");

  971.     carla_debug("CarlaEngine::loadProject(\"%s\")", filename);

  972. 

  973.     File file(filename);

  974.     CARLA_SAFE_ASSERT_RETURN_ERR(file.existsAsFile(), "Requested file does not exist or is not a readable file");

  975. 

  976.     XmlDocument xml(file);

  977.     ScopedPointer<XmlElement> xmlElement(xml.getDocumentElement(true));

  978.     CARLA_SAFE_ASSERT_RETURN_ERR(xmlElement != nullptr, "Failed to parse project file");

  979. 

  980.     const String& xmlType(xmlElement->getTagName());

  981.     const bool isPreset(xmlType.equalsIgnoreCase("carla-preset"));

  982. 

  983.     if (! (xmlType.equalsIgnoreCase("carla-project") || isPreset))

  984.     {

  985.         setLastError("Not a valid Carla project or preset file");

  986.         return false;

  987.     }

  988. 

  989.     // completely load file

  990.     xmlElement = xml.getDocumentElement(false);

  991.     CARLA_SAFE_ASSERT_RETURN_ERR(xmlElement != nullptr, "Failed to completely parse project file");

  992. 

  993.     // handle plugins first

  994.     for (XmlElement* elem = xmlElement->getFirstChildElement(); elem != nullptr; elem = elem->getNextElement())

  995.     {

  996.         const String& tagName(elem->getTagName());

  997. 

  998.         if (isPreset || tagName.equalsIgnoreCase("plugin"))

  999.         {

  1000.             StateSave stateSave;

  1001.             stateSave.fillFromXmlElement(isPreset ? xmlElement.get() : elem);

  1002. 

  1003.             callback(ENGINE_CALLBACK_IDLE, 0, 0, 0, 0.0f, nullptr);

  1004. 

  1005.             CARLA_SAFE_ASSERT_CONTINUE(stateSave.type != nullptr);

  1006. 

  1007.             const void* extraStuff = nullptr;

  1008. 

  1009.             // check if using GIG or SF2 16outs

  1010.             static const char kUse16OutsSuffix[] = " (16 outs)";

  1011. 

  1012.             const BinaryType btype(getBinaryTypeFromFile(stateSave.binary));

  1013.             const PluginType ptype(getPluginTypeFromString(stateSave.type));

  1014. 

  1015.             if (CarlaString(stateSave.label).endsWith(kUse16OutsSuffix))

  1016.             {

  1017.                 if (ptype == PLUGIN_GIG || ptype == PLUGIN_SF2)

  1018.                     extraStuff = "true";

  1019.             }

  1020. 

  1021.             // TODO - proper find&load plugins

  1022. 

  1023.             if (addPlugin(btype, ptype, stateSave.binary, stateSave.name, stateSave.label, stateSave.uniqueId, extraStuff))

  1024.             {

  1025.                 if (CarlaPlugin* const plugin = getPlugin(pData->curPluginCount-1))

  1026.                     plugin->loadStateSave(stateSave);

  1027.             }

  1028.             else

  1029.                 carla_stderr2("Failed to load a plugin, error was:\n%s", getLastError());

  1030.         }

  1031. 

  1032.         if (isPreset)

  1033.             return true;

  1034.     }

  1035. 

  1036. #ifndef BUILD_BRIDGE

  1037.     callback(ENGINE_CALLBACK_IDLE, 0, 0, 0, 0.0f, nullptr);

  1038. 

  1039.     // if we're running inside some session-manager, let them handle the connections

  1040.     if (pData->options.processMode != ENGINE_PROCESS_MODE_PATCHBAY)

  1041.     {

  1042.         if (std::getenv("CARLA_DONT_MANAGE_CONNECTIONS") != nullptr || std::getenv("LADISH_APP_NAME") != nullptr || std::getenv("NSM_URL") != nullptr)

  1043.             return true;

  1044.     }

  1045. 

  1046.     // now handle connections

  1047.     for (XmlElement* elem = xmlElement->getFirstChildElement(); elem != nullptr; elem = elem->getNextElement())

  1048.     {

  1049.         const String& tagName(elem->getTagName());

  1050. 

  1051.         if (tagName.equalsIgnoreCase("patchbay"))

  1052.         {

  1053.             CarlaString sourcePort, targetPort;

  1054. 

  1055.             for (XmlElement* patchElem = elem->getFirstChildElement(); patchElem != nullptr; patchElem = patchElem->getNextElement())

  1056.             {

  1057.                 const String& patchTag(patchElem->getTagName());

  1058. 

  1059.                 sourcePort.clear();

  1060.                 targetPort.clear();

  1061. 

  1062.                 if (! patchTag.equalsIgnoreCase("connection"))

  1063.                     continue;

  1064. 

  1065.                 for (XmlElement* connElem = patchElem->getFirstChildElement(); connElem != nullptr; connElem = connElem->getNextElement())

  1066.                 {

  1067.                     const String& tag(connElem->getTagName());

  1068.                     const String  text(connElem->getAllSubText().trim());

  1069. 

  1070.                     if (tag.equalsIgnoreCase("source"))

  1071.                         sourcePort = text.toRawUTF8();

  1072.                     else if (tag.equalsIgnoreCase("target"))

  1073.                         targetPort = text.toRawUTF8();

  1074.                 }

  1075. 

  1076.                 if (sourcePort.isNotEmpty() && targetPort.isNotEmpty())

  1077.                     restorePatchbayConnection(sourcePort, targetPort);

  1078.             }

  1079.             break;

  1080.         }

  1081.     }

  1082. #endif

  1083. 

  1084.     return true;

  1085. }

  1086. 

  1087. bool CarlaEngine::saveProject(const char* const filename)

  1088. {

  1089.     CARLA_SAFE_ASSERT_RETURN_ERR(filename != nullptr && filename[0] != '\0', "Invalid filename");

  1090.     carla_debug("CarlaEngine::saveProject(\"%s\")", filename);

  1091. 

  1092.     MemoryOutputStream out;

  1093.     out << "<?xml version='1.0' encoding='UTF-8'?>\n";

  1094.     out << "<!DOCTYPE CARLA-PROJECT>\n";

  1095.     out << "<CARLA-PROJECT VERSION='2.0'>\n";

  1096. 

  1097.     bool firstPlugin = true;

  1098.     char strBuf[STR_MAX+1];

  1099. 

  1100.     for (uint i=0; i < pData->curPluginCount; ++i)

  1101.     {

  1102.         CarlaPlugin* const plugin(pData->plugins[i].plugin);

  1103. 

  1104.         if (plugin != nullptr && plugin->isEnabled())

  1105.         {

  1106.             if (! firstPlugin)

  1107.                 out << "\n";

  1108. 

  1109.             strBuf[0] = '\0';

  1110. 

  1111.             plugin->getRealName(strBuf);

  1112. 

  1113.             //if (strBuf[0] != '\0')

  1114.             //    out << QString(" <!-- %1 -->\n").arg(xmlSafeString(strBuf, true));

  1115. 

  1116.             out << " <Plugin>\n";

  1117.             out << plugin->getStateSave().toString();

  1118.             out << " </Plugin>\n";

  1119. 

  1120.             firstPlugin = false;

  1121.         }

  1122.     }

  1123. 

  1124. #ifndef BUILD_BRIDGE

  1125.     bool saveConnections = true;

  1126. 

  1127.     // if we're running inside some session-manager, let them handle the connections

  1128.     if (pData->options.processMode != ENGINE_PROCESS_MODE_PATCHBAY)

  1129.     {

  1130.         if (std::getenv("CARLA_DONT_MANAGE_CONNECTIONS") != nullptr || std::getenv("LADISH_APP_NAME") != nullptr || std::getenv("NSM_URL") != nullptr)

  1131.             saveConnections = false;

  1132.     }

  1133. 

  1134.     if (saveConnections)

  1135.     {

  1136.         if (const char* const* patchbayConns = getPatchbayConnections())

  1137.         {

  1138.             if (! firstPlugin)

  1139.                 out << "\n";

  1140. 

  1141.             out << " <Patchbay>\n";

  1142. 

  1143.             for (int i=0; patchbayConns[i] != nullptr && patchbayConns[i+1] != nullptr; ++i, ++i )

  1144.             {

  1145.                 const char* const connSource(patchbayConns[i]);

  1146.                 const char* const connTarget(patchbayConns[i+1]);

  1147. 

  1148.                 CARLA_SAFE_ASSERT_CONTINUE(connSource != nullptr && connSource[0] != '\0');

  1149.                 CARLA_SAFE_ASSERT_CONTINUE(connTarget != nullptr && connTarget[0] != '\0');

  1150. 

  1151.                 out << "  <Connection>\n";

  1152.                 out << "   <Source>" << connSource << "</Source>\n";

  1153.                 out << "   <Target>" << connTarget << "</Target>\n";

  1154.                 out << "  </Connection>\n";

  1155.             }

  1156. 

  1157.             out << " </Patchbay>\n";

  1158.         }

  1159.     }

  1160. #endif

  1161. 

  1162.     out << "</CARLA-PROJECT>\n";

  1163. 

  1164.     File file(filename);

  1165. 

  1166.     if (file.replaceWithData(out.getData(), out.getDataSize()))

  1167.         return true;

  1168. 

  1169.     setLastError("Failed to write file");

  1170.     return false;

  1171. }

  1172. 

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

  1174. // Information (base)

  1175. 

  1176. uint CarlaEngine::getHints() const noexcept

  1177. {

  1178.     return pData->hints;

  1179. }

  1180. 

  1181. uint32_t CarlaEngine::getBufferSize() const noexcept

  1182. {

  1183.     return pData->bufferSize;

  1184. }

  1185. 

  1186. double CarlaEngine::getSampleRate() const noexcept

  1187. {

  1188.     return pData->sampleRate;

  1189. }

  1190. 

  1191. const char* CarlaEngine::getName() const noexcept

  1192. {

  1193.     return pData->name;

  1194. }

  1195. 

  1196. EngineProcessMode CarlaEngine::getProccessMode() const noexcept

  1197. {

  1198.     return pData->options.processMode;

  1199. }

  1200. 

  1201. const EngineOptions& CarlaEngine::getOptions() const noexcept

  1202. {

  1203.     return pData->options;

  1204. }

  1205. 

  1206. const EngineTimeInfo& CarlaEngine::getTimeInfo() const noexcept

  1207. {

  1208.     return pData->timeInfo;

  1209. }

  1210. 

  1211. // -----------------------------------------------------------------------

  1212. // Information (peaks)

  1213. 

  1214. float CarlaEngine::getInputPeak(const uint pluginId, const bool isLeft) const noexcept

  1215. {

  1216.     CARLA_SAFE_ASSERT_RETURN(pluginId < pData->curPluginCount, 0.0f);

  1217. 

  1218.     return pData->plugins[pluginId].insPeak[isLeft ? 0 : 1];

  1219. }

  1220. 

  1221. float CarlaEngine::getOutputPeak(const uint pluginId, const bool isLeft) const noexcept

  1222. {

  1223.     CARLA_SAFE_ASSERT_RETURN(pluginId < pData->curPluginCount, 0.0f);

  1224. 

  1225.     return pData->plugins[pluginId].outsPeak[isLeft ? 0 : 1];

  1226. }

  1227. 

  1228. // -----------------------------------------------------------------------

  1229. // Callback

  1230. 

  1231. void CarlaEngine::callback(const EngineCallbackOpcode action, const uint pluginId, const int value1, const int value2, const float value3, const char* const valueStr) noexcept

  1232. {

  1233.     carla_debug("CarlaEngine::callback(%i:%s, %i, %i, %i, %f, \"%s\")", action, EngineCallbackOpcode2Str(action), pluginId, value1, value2, value3, valueStr);

  1234. 

  1235. #ifdef BUILD_BRIDGE

  1236.     if (pData->isIdling)

  1237. #else

  1238.     if (pData->isIdling && action != ENGINE_CALLBACK_PATCHBAY_CLIENT_DATA_CHANGED)

  1239. #endif

  1240.     {

  1241.         carla_stdout("callback while idling (%i:%s, %i, %i, %i, %f, \"%s\")", action, EngineCallbackOpcode2Str(action), pluginId, value1, value2, value3, valueStr);

  1242.     }

  1243. 

  1244.     if (action == ENGINE_CALLBACK_IDLE)

  1245.     {

  1246.         ++pData->isIdling;

  1247.     }

  1248. #ifdef BUILD_BRIDGE

  1249.     else if (pData->oscData != nullptr)

  1250.     {

  1251.         switch (action)

  1252.         {

  1253.         case ENGINE_CALLBACK_PARAMETER_VALUE_CHANGED:

  1254.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  1255.             oscSend_bridge_parameter_value(static_cast<uint>(value1), value3);

  1256.             break;

  1257.         case ENGINE_CALLBACK_PARAMETER_DEFAULT_CHANGED:

  1258.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  1259.             oscSend_bridge_default_value(static_cast<uint>(value1), value3);

  1260.             break;

  1261.         case ENGINE_CALLBACK_PROGRAM_CHANGED:

  1262.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  1263.             oscSend_bridge_current_program(value1);

  1264.             break;

  1265.         case ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED:

  1266.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  1267.             oscSend_bridge_current_midi_program(value1);

  1268.             break;

  1269.         case ENGINE_CALLBACK_UI_STATE_CHANGED:

  1270.             if (value1 != 1)

  1271.                 oscSend_bridge_configure("CarlaBridgeHideGUI", "");

  1272.             break;

  1273.         default:

  1274.             break;

  1275.         }

  1276.     }

  1277. #endif

  1278. 

  1279.     if (pData->callback != nullptr)

  1280.     {

  1281.         try {

  1282.             pData->callback(pData->callbackPtr, action, pluginId, value1, value2, value3, valueStr);

  1283.         } CARLA_SAFE_EXCEPTION("callback");

  1284.     }

  1285. 

  1286.     if (action == ENGINE_CALLBACK_IDLE)

  1287.         --pData->isIdling;

  1288. }

  1289. 

  1290. void CarlaEngine::setCallback(const EngineCallbackFunc func, void* const ptr) noexcept

  1291. {

  1292.     carla_debug("CarlaEngine::setCallback(%p, %p)", func, ptr);

  1293. 

  1294.     pData->callback    = func;

  1295.     pData->callbackPtr = ptr;

  1296. }

  1297. 

  1298. // -----------------------------------------------------------------------

  1299. // File Callback

  1300. 

  1301. const char* CarlaEngine::runFileCallback(const FileCallbackOpcode action, const bool isDir, const char* const title, const char* const filter) noexcept

  1302. {

  1303.     CARLA_SAFE_ASSERT_RETURN(title != nullptr && title[0] != '\0', nullptr);

  1304.     CARLA_SAFE_ASSERT_RETURN(filter != nullptr, nullptr);

  1305.     carla_debug("CarlaEngine::runFileCallback(%i:%s, %s, \"%s\", \"%s\")", action, FileCallbackOpcode2Str(action), bool2str(isDir), title, filter);

  1306. 

  1307.     const char* ret = nullptr;

  1308. 

  1309.     if (pData->fileCallback != nullptr)

  1310.     {

  1311.         try {

  1312.             ret = pData->fileCallback(pData->fileCallbackPtr, action, isDir, title, filter);

  1313.         } CARLA_SAFE_EXCEPTION("runFileCallback");

  1314.     }

  1315. 

  1316.     return ret;

  1317. }

  1318. 

  1319. void CarlaEngine::setFileCallback(const FileCallbackFunc func, void* const ptr) noexcept

  1320. {

  1321.     carla_debug("CarlaEngine::setFileCallback(%p, %p)", func, ptr);

  1322. 

  1323.     pData->fileCallback    = func;

  1324.     pData->fileCallbackPtr = ptr;

  1325. }

  1326. 

  1327. // -----------------------------------------------------------------------

  1328. // Transport

  1329. 

  1330. void CarlaEngine::transportPlay() noexcept

  1331. {

  1332.     pData->time.playing = true;

  1333. }

  1334. 

  1335. void CarlaEngine::transportPause() noexcept

  1336. {

  1337.     pData->time.playing = false;

  1338. }

  1339. 

  1340. void CarlaEngine::transportRelocate(const uint64_t frame) noexcept

  1341. {

  1342.     pData->time.frame = frame;

  1343. }

  1344. 

  1345. // -----------------------------------------------------------------------

  1346. // Error handling

  1347. 

  1348. const char* CarlaEngine::getLastError() const noexcept

  1349. {

  1350.     return pData->lastError;

  1351. }

  1352. 

  1353. void CarlaEngine::setLastError(const char* const error) const noexcept

  1354. {

  1355.     pData->lastError = error;

  1356. }

  1357. 

  1358. void CarlaEngine::setAboutToClose() noexcept

  1359. {

  1360.     carla_debug("CarlaEngine::setAboutToClose()");

  1361. 

  1362.     pData->aboutToClose = true;

  1363. }

  1364. 

  1365. // -----------------------------------------------------------------------

  1366. // Global options

  1367. 

  1368. void CarlaEngine::setOption(const EngineOption option, const int value, const char* const valueStr) noexcept

  1369. {

  1370.     carla_debug("CarlaEngine::setOption(%i:%s, %i, \"%s\")", option, EngineOption2Str(option), value, valueStr);

  1371. 

  1372.     if (isRunning() && (option == ENGINE_OPTION_PROCESS_MODE || option == ENGINE_OPTION_AUDIO_NUM_PERIODS || option == ENGINE_OPTION_AUDIO_DEVICE))

  1373.         return carla_stderr("CarlaEngine::setOption(%i:%s, %i, \"%s\") - Cannot set this option while engine is running!", option, EngineOption2Str(option), value, valueStr);

  1374. 

  1375.     switch (option)

  1376.     {

  1377.     case ENGINE_OPTION_DEBUG:

  1378.     case ENGINE_OPTION_NSM_INIT:

  1379.         break;

  1380. 

  1381.     case ENGINE_OPTION_PROCESS_MODE:

  1382.         CARLA_SAFE_ASSERT_RETURN(value >= ENGINE_PROCESS_MODE_SINGLE_CLIENT && value <= ENGINE_PROCESS_MODE_BRIDGE,);

  1383.         pData->options.processMode = static_cast<EngineProcessMode>(value);

  1384.         break;

  1385. 

  1386.     case ENGINE_OPTION_TRANSPORT_MODE:

  1387.         CARLA_SAFE_ASSERT_RETURN(value >= ENGINE_TRANSPORT_MODE_INTERNAL && value <= ENGINE_TRANSPORT_MODE_BRIDGE,);

  1388.         pData->options.transportMode = static_cast<EngineTransportMode>(value);

  1389.         break;

  1390. 

  1391.     case ENGINE_OPTION_FORCE_STEREO:

  1392.         CARLA_SAFE_ASSERT_RETURN(value == 0 || value == 1,);

  1393.         pData->options.forceStereo = (value != 0);

  1394.         break;

  1395. 

  1396.     case ENGINE_OPTION_PREFER_PLUGIN_BRIDGES:

  1397.         CARLA_SAFE_ASSERT_RETURN(value == 0 || value == 1,);

  1398.         pData->options.preferPluginBridges = (value != 0);

  1399.         break;

  1400. 

  1401.     case ENGINE_OPTION_PREFER_UI_BRIDGES:

  1402.         CARLA_SAFE_ASSERT_RETURN(value == 0 || value == 1,);

  1403.         pData->options.preferUiBridges = (value != 0);

  1404.         break;

  1405. 

  1406.     case ENGINE_OPTION_UIS_ALWAYS_ON_TOP:

  1407.         CARLA_SAFE_ASSERT_RETURN(value == 0 || value == 1,);

  1408.         pData->options.uisAlwaysOnTop = (value != 0);

  1409.         break;

  1410. 

  1411.     case ENGINE_OPTION_MAX_PARAMETERS:

  1412.         CARLA_SAFE_ASSERT_RETURN(value >= 0,);

  1413.         pData->options.maxParameters = static_cast<uint>(value);

  1414.         break;

  1415. 

  1416.     case ENGINE_OPTION_UI_BRIDGES_TIMEOUT:

  1417.         CARLA_SAFE_ASSERT_RETURN(value >= 0,);

  1418.         pData->options.uiBridgesTimeout = static_cast<uint>(value);

  1419.         break;

  1420. 

  1421.     case ENGINE_OPTION_AUDIO_NUM_PERIODS:

  1422.         CARLA_SAFE_ASSERT_RETURN(value >= 2 && value <= 3,);

  1423.         pData->options.audioNumPeriods = static_cast<uint>(value);

  1424.         break;

  1425. 

  1426.     case ENGINE_OPTION_AUDIO_BUFFER_SIZE:

  1427.         CARLA_SAFE_ASSERT_RETURN(value >= 8,);

  1428.         pData->options.audioBufferSize = static_cast<uint>(value);

  1429.         break;

  1430. 

  1431.     case ENGINE_OPTION_AUDIO_SAMPLE_RATE:

  1432.         CARLA_SAFE_ASSERT_RETURN(value >= 22050,);

  1433.         pData->options.audioSampleRate = static_cast<uint>(value);

  1434.         break;

  1435. 

  1436.     case ENGINE_OPTION_AUDIO_DEVICE:

  1437.         CARLA_SAFE_ASSERT_RETURN(valueStr != nullptr,);

  1438. 

  1439.         if (pData->options.audioDevice != nullptr)

  1440.             delete[] pData->options.audioDevice;

  1441. 

  1442.         pData->options.audioDevice = carla_strdup_safe(valueStr);

  1443.         break;

  1444. 

  1445.     case ENGINE_OPTION_PATH_BINARIES:

  1446.         CARLA_SAFE_ASSERT_RETURN(valueStr != nullptr && valueStr[0] != '\0',);

  1447. 

  1448.         if (pData->options.binaryDir != nullptr)

  1449.             delete[] pData->options.binaryDir;

  1450. 

  1451.         pData->options.binaryDir = carla_strdup_safe(valueStr);

  1452.         break;

  1453. 

  1454.     case ENGINE_OPTION_PATH_RESOURCES:

  1455.         CARLA_SAFE_ASSERT_RETURN(valueStr != nullptr && valueStr[0] != '\0',);

  1456. 

  1457.         if (pData->options.resourceDir != nullptr)

  1458.             delete[] pData->options.resourceDir;

  1459. 

  1460.         pData->options.resourceDir = carla_strdup_safe(valueStr);

  1461.         break;

  1462. 

  1463.     case ENGINE_OPTION_FRONTEND_WIN_ID:

  1464.         CARLA_SAFE_ASSERT_RETURN(valueStr != nullptr && valueStr[0] != '\0',);

  1465.         const long long winId(std::strtoll(valueStr, nullptr, 16));

  1466.         CARLA_SAFE_ASSERT_RETURN(winId >= 0,);

  1467.         pData->options.frontendWinId = static_cast<uintptr_t>(winId);

  1468.         break;

  1469.     }

  1470. }

  1471. 

  1472. // -----------------------------------------------------------------------

  1473. // OSC Stuff

  1474. 

  1475. #ifdef BUILD_BRIDGE

  1476. bool CarlaEngine::isOscBridgeRegistered() const noexcept

  1477. {

  1478.     return (pData->oscData != nullptr);

  1479. }

  1480. #else

  1481. bool CarlaEngine::isOscControlRegistered() const noexcept

  1482. {

  1483.     return pData->osc.isControlRegistered();

  1484. }

  1485. #endif

  1486. 

  1487. void CarlaEngine::idleOsc() const noexcept

  1488. {

  1489.     pData->osc.idle();

  1490. }

  1491. 

  1492. const char* CarlaEngine::getOscServerPathTCP() const noexcept

  1493. {

  1494.     return pData->osc.getServerPathTCP();

  1495. }

  1496. 

  1497. const char* CarlaEngine::getOscServerPathUDP() const noexcept

  1498. {

  1499.     return pData->osc.getServerPathUDP();

  1500. }

  1501. 

  1502. #ifdef BUILD_BRIDGE

  1503. void CarlaEngine::setOscBridgeData(CarlaOscData* const oscData) const noexcept

  1504. {

  1505.     pData->oscData = oscData;

  1506. }

  1507. #endif

  1508. 

  1509. // -----------------------------------------------------------------------

  1510. // Helper functions

  1511. 

  1512. EngineEvent* CarlaEngine::getInternalEventBuffer(const bool isInput) const noexcept

  1513. {

  1514.     return isInput ? pData->events.in : pData->events.out;

  1515. }

  1516. 

  1517. void CarlaEngine::registerEnginePlugin(const uint id, CarlaPlugin* const plugin) noexcept

  1518. {

  1519.     CARLA_SAFE_ASSERT_RETURN(id == pData->curPluginCount,);

  1520.     carla_debug("CarlaEngine::registerEnginePlugin(%i, %p)", id, plugin);

  1521. 

  1522.     pData->plugins[id].plugin = plugin;

  1523. }

  1524. 

  1525. // -----------------------------------------------------------------------

  1526. // Internal stuff

  1527. 

  1528. void CarlaEngine::bufferSizeChanged(const uint32_t newBufferSize)

  1529. {

  1530.     carla_debug("CarlaEngine::bufferSizeChanged(%i)", newBufferSize);

  1531. 

  1532. #ifndef BUILD_BRIDGE

  1533.     pData->graph.setBufferSize(newBufferSize);

  1534. #endif

  1535. 

  1536.     for (uint i=0; i < pData->curPluginCount; ++i)

  1537.     {

  1538.         CarlaPlugin* const plugin(pData->plugins[i].plugin);

  1539. 

  1540.         if (plugin != nullptr && plugin->isEnabled())

  1541.             plugin->bufferSizeChanged(newBufferSize);

  1542.     }

  1543. 

  1544.     callback(ENGINE_CALLBACK_BUFFER_SIZE_CHANGED, 0, static_cast<int>(newBufferSize), 0, 0.0f, nullptr);

  1545. }

  1546. 

  1547. void CarlaEngine::sampleRateChanged(const double newSampleRate)

  1548. {

  1549.     carla_debug("CarlaEngine::sampleRateChanged(%g)", newSampleRate);

  1550. 

  1551. #ifndef BUILD_BRIDGE

  1552.     pData->graph.setSampleRate(newSampleRate);

  1553. #endif

  1554. 

  1555.     for (uint i=0; i < pData->curPluginCount; ++i)

  1556.     {

  1557.         CarlaPlugin* const plugin(pData->plugins[i].plugin);

  1558. 

  1559.         if (plugin != nullptr && plugin->isEnabled())

  1560.             plugin->sampleRateChanged(newSampleRate);

  1561.     }

  1562. 

  1563.     callback(ENGINE_CALLBACK_SAMPLE_RATE_CHANGED, 0, 0, 0, static_cast<float>(newSampleRate), nullptr);

  1564. }

  1565. 

  1566. void CarlaEngine::offlineModeChanged(const bool isOfflineNow)

  1567. {

  1568.     carla_debug("CarlaEngine::offlineModeChanged(%s)", bool2str(isOfflineNow));

  1569. 

  1570. #ifndef BUILD_BRIDGE

  1571.     pData->graph.setOffline(isOfflineNow);

  1572. #endif

  1573. 

  1574.     for (uint i=0; i < pData->curPluginCount; ++i)

  1575.     {

  1576.         CarlaPlugin* const plugin(pData->plugins[i].plugin);

  1577. 

  1578.         if (plugin != nullptr && plugin->isEnabled())

  1579.             plugin->offlineModeChanged(isOfflineNow);

  1580.     }

  1581. }

  1582. 

  1583. void CarlaEngine::runPendingRtEvents() noexcept

  1584. {

  1585.     pData->doNextPluginAction(true);

  1586. 

  1587.     if (pData->time.playing)

  1588.         pData->time.frame += pData->bufferSize;

  1589. 

  1590.     if (pData->options.transportMode == ENGINE_TRANSPORT_MODE_INTERNAL)

  1591.     {

  1592.         pData->timeInfo.playing = pData->time.playing;

  1593.         pData->timeInfo.frame   = pData->time.frame;

  1594.     }

  1595. }

  1596. 

  1597. void CarlaEngine::setPluginPeaks(const uint pluginId, float const inPeaks[2], float const outPeaks[2]) noexcept

  1598. {

  1599.     EnginePluginData& pluginData(pData->plugins[pluginId]);

  1600. 

  1601.     pluginData.insPeak[0]  = inPeaks[0];

  1602.     pluginData.insPeak[1]  = inPeaks[1];

  1603.     pluginData.outsPeak[0] = outPeaks[0];

  1604.     pluginData.outsPeak[1] = outPeaks[1];

  1605. }

  1606. 

  1607. // -----------------------------------------------------------------------

  1608. 

  1609. CARLA_BACKEND_END_NAMESPACE