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

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

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

  330.     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);

  331. 

  332.     uint id;

  333. 

  334. #ifndef BUILD_BRIDGE

  335.     CarlaPlugin* oldPlugin = nullptr;

  336. 

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

  338.     {

  339.         id = pData->nextPluginId;

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

  341. 

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

  343. 

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

  345.     }

  346.     else

  347. #endif

  348.     {

  349.         id = pData->curPluginCount;

  350. 

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

  352.         {

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

  354.             return false;

  355.         }

  356. 

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

  358.     }

  359. 

  360.     CarlaPlugin::Initializer initializer = {

  361.         this,

  362.         id,

  363.         filename,

  364.         name,

  365.         label,

  366.         uniqueId

  367.     };

  368. 

  369.     CarlaPlugin* plugin = nullptr;

  370. 

  371. #ifndef BUILD_BRIDGE

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

  373. 

  374.     if (bridgeBinary.isNotEmpty())

  375.     {

  376. # ifndef CARLA_OS_WIN

  377.         if (btype == BINARY_NATIVE)

  378.         {

  379.             bridgeBinary += OS_SEP_STR "carla-bridge-native";

  380.         }

  381.         else

  382. # endif

  383.         {

  384.             switch (btype)

  385.             {

  386.             case BINARY_POSIX32:

  387.                 bridgeBinary += OS_SEP_STR "carla-bridge-posix32";

  388.                 break;

  389.             case BINARY_POSIX64:

  390.                 bridgeBinary += OS_SEP_STR "carla-bridge-posix64";

  391.                 break;

  392.             case BINARY_WIN32:

  393.                 bridgeBinary += OS_SEP_STR "carla-bridge-win32.exe";

  394.                 break;

  395.             case BINARY_WIN64:

  396.                 bridgeBinary += OS_SEP_STR "carla-bridge-win64.exe";

  397.                 break;

  398.             default:

  399.                 bridgeBinary.clear();

  400.                 break;

  401.             }

  402.         }

  403. 

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

  405.             bridgeBinary.clear();

  406.     }

  407. 

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

  409.     {

  410.         if (bridgeBinary.isNotEmpty())

  411.         {

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

  413.         }

  414. # ifdef CARLA_OS_LINUX

  415.         else if (btype == BINARY_WIN32)

  416.         {

  417.             // fallback to dssi-vst

  418.             File file(filename);

  419. 

  420.             CarlaString label2(file.getFullPathName().toRawUTF8());

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

  422. 

  423.             CarlaPlugin::Initializer init2 = {

  424.                 this,

  425.                 id,

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

  427.                 name,

  428.                 label2,

  429.                 uniqueId

  430.             };

  431. 

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

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

  434. 

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

  436. 

  437.             if (oldVstPath != nullptr)

  438.                 carla_setenv("VST_PATH", oldVstPath);

  439.         }

  440. # endif

  441.         else

  442.         {

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

  444.             return false;

  445.         }

  446.     }

  447.     else

  448. #endif // ! BUILD_BRIDGE

  449.     {

  450. #ifndef BUILD_BRIDGE

  451.         bool use16Outs;

  452. #endif

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

  454. 

  455.         switch (ptype)

  456.         {

  457.         case PLUGIN_NONE:

  458.             break;

  459. 

  460.         case PLUGIN_INTERNAL:

  461. #ifndef BUILD_BRIDGE

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

  463.             {

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

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

  466.             }

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

  468.             {

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

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

  471.             }

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

  473.             {

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

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

  476.             }

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

  478.             {

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

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

  481.             }*/

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

  483. #endif

  484.             break;

  485. 

  486.         case PLUGIN_LADSPA:

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

  488.             break;

  489. 

  490.         case PLUGIN_DSSI:

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

  492.             break;

  493. 

  494.         case PLUGIN_LV2:

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

  496.             break;

  497. 

  498.         case PLUGIN_VST:

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

  500.             break;

  501. 

  502.         case PLUGIN_VST3:

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

  504.             break;

  505. 

  506.         case PLUGIN_AU:

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

  508.             break;

  509. 

  510.         case PLUGIN_GIG:

  511. #ifndef BUILD_BRIDGE

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

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

  514. #endif

  515.             break;

  516. 

  517.         case PLUGIN_SF2:

  518. #ifndef BUILD_BRIDGE

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

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

  521. #endif

  522.             break;

  523. 

  524.         case PLUGIN_SFZ:

  525. #ifndef BUILD_BRIDGE

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

  527. #endif

  528.             break;

  529.         }

  530.     }

  531. 

  532.     if (plugin == nullptr)

  533.         return false;

  534. 

  535.     plugin->registerToOscClient();

  536. 

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

  538.     pluginData.plugin      = plugin;

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

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

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

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

  543. 

  544. #ifndef BUILD_BRIDGE

  545.     if (oldPlugin != nullptr)

  546.     {

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

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

  549.         pData->thread.startThread();

  550. 

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

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

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

  554. 

  555.         delete oldPlugin;

  556. 

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

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

  559. 

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

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

  562. 

  563.         if (wasActive)

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

  565. 

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

  567.     }

  568.     else

  569. #endif

  570.     {

  571.         ++pData->curPluginCount;

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

  573.     }

  574. 

  575.     return true;

  576. }

  577. 

  578. 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)

  579. {

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

  581. }

  582. 

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

  584. {

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

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

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

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

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

  590. 

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

  592. 

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

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

  595. 

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

  597. 

  598. #ifndef BUILD_BRIDGE

  599.     const ScopedActionLock sal(pData, kEnginePostActionRemovePlugin, id, 0, isRunning());

  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, "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_debug("CarlaEngine::removeAllPlugins()");

  623. 

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

  625.         return true;

  626. 

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

  628. 

  629.     const ScopedActionLock sal(pData, kEnginePostActionZeroCount, 0, 0, isRunning());

  630. 

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

  632. 

  633.     for (uint i=0; i < pData->maxPluginNumber; ++i)

  634.     {

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

  636. 

  637.         if (pluginData.plugin != nullptr)

  638.         {

  639.             delete pluginData.plugin;

  640.             pluginData.plugin = nullptr;

  641.         }

  642. 

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

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

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

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

  647. 

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

  649.     }

  650. 

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

  652.         pData->thread.startThread();

  653. 

  654.     return true;

  655. }

  656. 

  657. #ifndef BUILD_BRIDGE

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

  659. {

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

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

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

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

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

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

  666. 

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

  668. 

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

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

  671. 

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

  673.     {

  674.         plugin->setName(name);

  675.         return name;

  676.     }

  677. 

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

  679.     return nullptr;

  680. }

  681. 

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

  683. {

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

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

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

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

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

  689. 

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

  691. 

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

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

  694. 

  695.     char label[STR_MAX+1];

  696.     carla_zeroChar(label, STR_MAX+1);

  697.     plugin->getLabel(label);

  698. 

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

  700. 

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

  702.         return false;

  703. 

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

  705. 

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

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

  708. 

  709.     return true;

  710. }

  711. 

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

  713. {

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

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

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

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

  718. 

  719.     // might use this to reset

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

  721.     {

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

  723.         return true;

  724.     }

  725. 

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

  727. 

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

  729. 

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

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

  732. 

  733.     pData->nextPluginId = id;

  734. 

  735.     return true;

  736. }

  737. 

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

  739. {

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

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

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

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

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

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

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

  747. 

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

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

  750. 

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

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

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

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

  755. 

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

  757. 

  758.     const ScopedActionLock sal(pData, kEnginePostActionSwitchPlugins, idA, idB, isRunning());

  759. 

  760.     // TODO

  761.     //if (isOscControlRegistered())

  762.     //    oscSend_control_switch_plugins(idA, idB);

  763. 

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

  765.         pData->thread.startThread();

  766. 

  767.     return true;

  768. }

  769. #endif

  770. 

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

  772. {

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

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

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

  776. 

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

  778. }

  779. 

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

  781. {

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

  783. }

  784. 

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

  786. {

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

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

  789. 

  790.     CarlaString sname;

  791.     sname = name;

  792. 

  793.     if (sname.isEmpty())

  794.     {

  795.         sname = "(No name)";

  796.         return sname.dup();

  797.     }

  798. 

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

  800. 

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

  802.         return sname.dup();

  803. 

  804.     sname.truncate(maxNameSize);

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

  806. 

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

  808.     {

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

  810. 

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

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

  813.         {

  814.             if (sname != pluginName)

  815.                 continue;

  816.         }

  817. 

  818.         // Check if string has already been modified

  819.         {

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

  821. 

  822.             // 1 digit, ex: " (2)"

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

  824.             {

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

  826. 

  827.                 if (number == 9)

  828.                 {

  829.                     // next number is 10, 2 digits

  830.                     sname.truncate(len-4);

  831.                     sname += " (10)";

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

  833.                 }

  834.                 else

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

  836. 

  837.                 continue;

  838.             }

  839. 

  840.             // 2 digits, ex: " (11)"

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

  842.             {

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

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

  845. 

  846.                 if (n2 == '9')

  847.                 {

  848.                     n2 = '0';

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

  850.                 }

  851.                 else

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

  853. 

  854.                 sname[len-2] = n2;

  855.                 sname[len-3] = n3;

  856. 

  857.                 continue;

  858.             }

  859.         }

  860. 

  861.         // Modify string if not

  862.         sname += " (2)";

  863.     }

  864. 

  865.     return sname.dup();

  866. }

  867. 

  868. // -----------------------------------------------------------------------

  869. // Project management

  870. 

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

  872. {

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

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

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

  876. 

  877.     File file(filename);

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

  879. 

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

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

  882. 

  883.     // -------------------------------------------------------------------

  884. 

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

  886.         return loadProject(filename);

  887. 

  888.     // -------------------------------------------------------------------

  889. 

  890.     if (extension == "gig")

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

  892. 

  893.     if (extension == "sf2")

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

  895. 

  896.     if (extension == "sfz")

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

  898. 

  899.     // -------------------------------------------------------------------

  900. 

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

  902.     {

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

  904.         {

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

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

  907.             return true;

  908.         }

  909.         return false;

  910.     }

  911. 

  912.     // -------------------------------------------------------------------

  913. 

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

  915.     {

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

  917.         {

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

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

  920.             return true;

  921.         }

  922.         return false;

  923.     }

  924. 

  925.     // -------------------------------------------------------------------

  926.     // ZynAddSubFX

  927. 

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

  929.     {

  930. #ifdef WANT_ZYNADDSUBFX

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

  932.         {

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

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

  935.             return true;

  936.         }

  937.         return false;

  938. #else

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

  940.         return false;

  941. #endif

  942.     }

  943. 

  944.     // -------------------------------------------------------------------

  945. 

  946.     setLastError("Unknown file extension");

  947.     return false;

  948. }

  949. 

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

  951. {

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

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

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

  955. 

  956.     File file(filename);

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

  958. 

  959.     XmlDocument xml(file);

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

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

  962. 

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

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

  965. 

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

  967.     {

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

  969.         return false;

  970.     }

  971. 

  972.     // completely load file

  973.     xmlElement = xml.getDocumentElement(false);

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

  975. 

  976.     // handle plugins first

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

  978.     {

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

  980. 

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

  982.         {

  983.             StateSave stateSave;

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

  985. 

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

  987. 

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

  989. 

  990.             const void* extraStuff = nullptr;

  991. 

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

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

  994. 

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

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

  997. 

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

  999.             {

  1000.                 if (ptype == PLUGIN_GIG || ptype == PLUGIN_SF2)

  1001.                     extraStuff = "true";

  1002.             }

  1003. 

  1004.             // TODO - proper find&load plugins

  1005. 

  1006.             if (addPlugin(btype, ptype, stateSave.binary, stateSave.name, stateSave.label, stateSave.uniqueId, extraStuff))

  1007.             {

  1008.                 if (CarlaPlugin* const plugin = getPlugin(pData->curPluginCount-1))

  1009.                     plugin->loadStateSave(stateSave);

  1010.             }

  1011.             else

  1012.                 carla_stderr2("Failed to load a plugin, error was:%s\n", getLastError());

  1013.         }

  1014. 

  1015.         if (isPreset)

  1016.             return true;

  1017.     }

  1018. 

  1019. #ifndef BUILD_BRIDGE

  1020.     callback(ENGINE_CALLBACK_IDLE, 0, 0, 0, 0.0f, nullptr);

  1021. 

  1022.     // if we're running inside some session-manager, let them handle the connections

  1023.     if (pData->options.processMode != ENGINE_PROCESS_MODE_PATCHBAY)

  1024.     {

  1025.         if (std::getenv("CARLA_DONT_MANAGE_CONNECTIONS") != nullptr || std::getenv("LADISH_APP_NAME") != nullptr || std::getenv("NSM_URL") != nullptr)

  1026.             return true;

  1027.     }

  1028. 

  1029.     // now handle connections

  1030.     for (XmlElement* elem = xmlElement->getFirstChildElement(); elem != nullptr; elem = elem->getNextElement())

  1031.     {

  1032.         const String& tagName(elem->getTagName());

  1033. 

  1034.         if (tagName.equalsIgnoreCase("patchbay"))

  1035.         {

  1036.             CarlaString sourcePort, targetPort;

  1037. 

  1038.             for (XmlElement* patchElem = elem->getFirstChildElement(); patchElem != nullptr; patchElem = patchElem->getNextElement())

  1039.             {

  1040.                 const String& patchTag(patchElem->getTagName());

  1041. 

  1042.                 sourcePort.clear();

  1043.                 targetPort.clear();

  1044. 

  1045.                 if (! patchTag.equalsIgnoreCase("connection"))

  1046.                     continue;

  1047. 

  1048.                 for (XmlElement* connElem = patchElem->getFirstChildElement(); connElem != nullptr; connElem = connElem->getNextElement())

  1049.                 {

  1050.                     const String& tag(connElem->getTagName());

  1051.                     const String  text(connElem->getAllSubText().trim());

  1052. 

  1053.                     if (tag.equalsIgnoreCase("source"))

  1054.                         sourcePort = text.toRawUTF8();

  1055.                     else if (tag.equalsIgnoreCase("target"))

  1056.                         targetPort = text.toRawUTF8();

  1057.                 }

  1058. 

  1059.                 if (sourcePort.isNotEmpty() && targetPort.isNotEmpty())

  1060.                     restorePatchbayConnection(sourcePort, targetPort);

  1061.             }

  1062.             break;

  1063.         }

  1064.     }

  1065. #endif

  1066. 

  1067.     return true;

  1068. }

  1069. 

  1070. bool CarlaEngine::saveProject(const char* const filename)

  1071. {

  1072.     CARLA_SAFE_ASSERT_RETURN_ERR(filename != nullptr && filename[0] != '\0', "Invalid filename");

  1073.     carla_debug("CarlaEngine::saveProject(\"%s\")", filename);

  1074. 

  1075.     MemoryOutputStream out;

  1076.     out << "<?xml version='1.0' encoding='UTF-8'?>\n";

  1077.     out << "<!DOCTYPE CARLA-PROJECT>\n";

  1078.     out << "<CARLA-PROJECT VERSION='2.0'>\n";

  1079. 

  1080.     bool firstPlugin = true;

  1081.     char strBuf[STR_MAX+1];

  1082. 

  1083.     for (uint i=0; i < pData->curPluginCount; ++i)

  1084.     {

  1085.         CarlaPlugin* const plugin(pData->plugins[i].plugin);

  1086. 

  1087.         if (plugin != nullptr && plugin->isEnabled())

  1088.         {

  1089.             if (! firstPlugin)

  1090.                 out << "\n";

  1091. 

  1092.             strBuf[0] = '\0';

  1093. 

  1094.             plugin->getRealName(strBuf);

  1095. 

  1096.             //if (strBuf[0] != '\0')

  1097.             //    out << QString(" <!-- %1 -->\n").arg(xmlSafeString(strBuf, true));

  1098. 

  1099.             out << " <Plugin>\n";

  1100.             out << plugin->getStateSave().toString();

  1101.             out << " </Plugin>\n";

  1102. 

  1103.             firstPlugin = false;

  1104.         }

  1105.     }

  1106. 

  1107. #ifndef BUILD_BRIDGE

  1108.     // if we're running inside some session-manager, let them handle the connections

  1109.     if (pData->options.processMode != ENGINE_PROCESS_MODE_PATCHBAY)

  1110.     {

  1111.         if (std::getenv("CARLA_DONT_MANAGE_CONNECTIONS") != nullptr || std::getenv("LADISH_APP_NAME") != nullptr || std::getenv("NSM_URL") != nullptr)

  1112.             return true;

  1113.     }

  1114. 

  1115.     if (const char* const* patchbayConns = getPatchbayConnections())

  1116.     {

  1117.         if (! firstPlugin)

  1118.             out << "\n";

  1119. 

  1120.         out << " <Patchbay>\n";

  1121. 

  1122.         for (int i=0; patchbayConns[i] != nullptr && patchbayConns[i+1] != nullptr; ++i, ++i )

  1123.         {

  1124.             const char* const connSource(patchbayConns[i]);

  1125.             const char* const connTarget(patchbayConns[i+1]);

  1126. 

  1127.             CARLA_SAFE_ASSERT_CONTINUE(connSource != nullptr && connSource[0] != '\0');

  1128.             CARLA_SAFE_ASSERT_CONTINUE(connTarget != nullptr && connTarget[0] != '\0');

  1129. 

  1130.             out << "  <Connection>\n";

  1131.             out << "   <Source>" << connSource << "</Source>\n";

  1132.             out << "   <Target>" << connTarget << "</Target>\n";

  1133.             out << "  </Connection>\n";

  1134. 

  1135.             delete[] connSource;

  1136.             delete[] connTarget;

  1137.         }

  1138. 

  1139.         out << " </Patchbay>\n";

  1140.     }

  1141. #endif

  1142. 

  1143.     out << "</CARLA-PROJECT>\n";

  1144. 

  1145.     File file(filename);

  1146. 

  1147.     if (file.replaceWithData(out.getData(), out.getDataSize()))

  1148.         return true;

  1149. 

  1150.     setLastError("Failed to write file");

  1151.     return false;

  1152. }

  1153. 

  1154. // -----------------------------------------------------------------------

  1155. // Information (base)

  1156. 

  1157. uint CarlaEngine::getHints() const noexcept

  1158. {

  1159.     return pData->hints;

  1160. }

  1161. 

  1162. uint32_t CarlaEngine::getBufferSize() const noexcept

  1163. {

  1164.     return pData->bufferSize;

  1165. }

  1166. 

  1167. double CarlaEngine::getSampleRate() const noexcept

  1168. {

  1169.     return pData->sampleRate;

  1170. }

  1171. 

  1172. const char* CarlaEngine::getName() const noexcept

  1173. {

  1174.     return pData->name;

  1175. }

  1176. 

  1177. EngineProcessMode CarlaEngine::getProccessMode() const noexcept

  1178. {

  1179.     return pData->options.processMode;

  1180. }

  1181. 

  1182. const EngineOptions& CarlaEngine::getOptions() const noexcept

  1183. {

  1184.     return pData->options;

  1185. }

  1186. 

  1187. const EngineTimeInfo& CarlaEngine::getTimeInfo() const noexcept

  1188. {

  1189.     return pData->timeInfo;

  1190. }

  1191. 

  1192. // -----------------------------------------------------------------------

  1193. // Information (peaks)

  1194. 

  1195. float CarlaEngine::getInputPeak(const uint pluginId, const bool isLeft) const noexcept

  1196. {

  1197.     CARLA_SAFE_ASSERT_RETURN(pluginId < pData->curPluginCount, 0.0f);

  1198. 

  1199.     return pData->plugins[pluginId].insPeak[isLeft ? 0 : 1];

  1200. }

  1201. 

  1202. float CarlaEngine::getOutputPeak(const uint pluginId, const bool isLeft) const noexcept

  1203. {

  1204.     CARLA_SAFE_ASSERT_RETURN(pluginId < pData->curPluginCount, 0.0f);

  1205. 

  1206.     return pData->plugins[pluginId].outsPeak[isLeft ? 0 : 1];

  1207. }

  1208. 

  1209. // -----------------------------------------------------------------------

  1210. // Callback

  1211. 

  1212. void CarlaEngine::callback(const EngineCallbackOpcode action, const uint pluginId, const int value1, const int value2, const float value3, const char* const valueStr) noexcept

  1213. {

  1214.     carla_debug("CarlaEngine::callback(%i:%s, %i, %i, %i, %f, \"%s\")", action, EngineCallbackOpcode2Str(action), pluginId, value1, value2, value3, valueStr);

  1215. 

  1216.     if (pData->isIdling && action != ENGINE_CALLBACK_PATCHBAY_CLIENT_DATA_CHANGED)

  1217.         carla_stdout("callback while idling (%i:%s, %i, %i, %i, %f, \"%s\")", action, EngineCallbackOpcode2Str(action), pluginId, value1, value2, value3, valueStr);

  1218. 

  1219.     if (action == ENGINE_CALLBACK_IDLE)

  1220.         pData->isIdling = true;

  1221. #ifdef BUILD_BRIDGE

  1222.     else if (pData->oscData != nullptr)

  1223.     {

  1224.         switch (action)

  1225.         {

  1226.         case ENGINE_CALLBACK_PARAMETER_VALUE_CHANGED:

  1227.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  1228.             oscSend_bridge_parameter_value(static_cast<uint>(value1), value3);

  1229.             break;

  1230.         case ENGINE_CALLBACK_PARAMETER_DEFAULT_CHANGED:

  1231.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  1232.             oscSend_bridge_default_value(static_cast<uint>(value1), value3);

  1233.             break;

  1234.         case ENGINE_CALLBACK_PARAMETER_MIDI_CC_CHANGED:

  1235.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  1236.             CARLA_SAFE_ASSERT_BREAK(value2 >= -1 && value2 <= 0x5F);

  1237.             oscSend_bridge_parameter_midi_cc(static_cast<uint>(value1), static_cast<int16_t>(value2));

  1238.             break;

  1239.         case ENGINE_CALLBACK_PARAMETER_MIDI_CHANNEL_CHANGED:

  1240.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  1241.             CARLA_SAFE_ASSERT_BREAK(value2 >= 0 && value2 < MAX_MIDI_CHANNELS);

  1242.             oscSend_bridge_parameter_midi_channel(static_cast<uint>(value1), static_cast<uint8_t>(value2));

  1243.             break;

  1244.         case ENGINE_CALLBACK_PROGRAM_CHANGED:

  1245.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  1246.             oscSend_bridge_current_program(value1);

  1247.             break;

  1248.         case ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED:

  1249.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  1250.             oscSend_bridge_current_midi_program(value1);

  1251.             break;

  1252.         case ENGINE_CALLBACK_UI_STATE_CHANGED:

  1253.             if (value1 != 1)

  1254.                 oscSend_bridge_configure("CarlaBridgeHideGUI", "");

  1255.             break;

  1256.         default:

  1257.             break;

  1258.         }

  1259.     }

  1260. #endif

  1261. 

  1262.     if (pData->callback != nullptr)

  1263.     {

  1264.         try {

  1265.             pData->callback(pData->callbackPtr, action, pluginId, value1, value2, value3, valueStr);

  1266.         } CARLA_SAFE_EXCEPTION("callback");

  1267.     }

  1268. 

  1269.     if (action == ENGINE_CALLBACK_IDLE)

  1270.         pData->isIdling = false;

  1271. }

  1272. 

  1273. void CarlaEngine::setCallback(const EngineCallbackFunc func, void* const ptr) noexcept

  1274. {

  1275.     carla_debug("CarlaEngine::setCallback(%p, %p)", func, ptr);

  1276. 

  1277.     pData->callback    = func;

  1278.     pData->callbackPtr = ptr;

  1279. }

  1280. 

  1281. // -----------------------------------------------------------------------

  1282. // File Callback

  1283. 

  1284. const char* CarlaEngine::runFileCallback(const FileCallbackOpcode action, const bool isDir, const char* const title, const char* const filter) noexcept

  1285. {

  1286.     CARLA_SAFE_ASSERT_RETURN(title != nullptr && title[0] != '\0', nullptr);

  1287.     CARLA_SAFE_ASSERT_RETURN(filter != nullptr, nullptr);

  1288.     carla_debug("CarlaEngine::runFileCallback(%i:%s, %s, \"%s\", \"%s\")", action, FileCallbackOpcode2Str(action), bool2str(isDir), title, filter);

  1289. 

  1290.     const char* ret = nullptr;

  1291. 

  1292.     if (pData->fileCallback != nullptr)

  1293.     {

  1294.         try {

  1295.             ret = pData->fileCallback(pData->fileCallbackPtr, action, isDir, title, filter);

  1296.         } CARLA_SAFE_EXCEPTION("runFileCallback");

  1297.     }

  1298. 

  1299.     return ret;

  1300. }

  1301. 

  1302. void CarlaEngine::setFileCallback(const FileCallbackFunc func, void* const ptr) noexcept

  1303. {

  1304.     carla_debug("CarlaEngine::setFileCallback(%p, %p)", func, ptr);

  1305. 

  1306.     pData->fileCallback    = func;

  1307.     pData->fileCallbackPtr = ptr;

  1308. }

  1309. 

  1310. // -----------------------------------------------------------------------

  1311. // Transport

  1312. 

  1313. void CarlaEngine::transportPlay() noexcept

  1314. {

  1315.     pData->time.playing = true;

  1316. }

  1317. 

  1318. void CarlaEngine::transportPause() noexcept

  1319. {

  1320.     pData->time.playing = false;

  1321. }

  1322. 

  1323. void CarlaEngine::transportRelocate(const uint64_t frame) noexcept

  1324. {

  1325.     pData->time.frame = frame;

  1326. }

  1327. 

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

  1329. // Error handling

  1330. 

  1331. const char* CarlaEngine::getLastError() const noexcept

  1332. {

  1333.     return pData->lastError;

  1334. }

  1335. 

  1336. void CarlaEngine::setLastError(const char* const error) const noexcept

  1337. {

  1338.     pData->lastError = error;

  1339. }

  1340. 

  1341. void CarlaEngine::setAboutToClose() noexcept

  1342. {

  1343.     carla_debug("CarlaEngine::setAboutToClose()");

  1344. 

  1345.     pData->aboutToClose = true;

  1346. }

  1347. 

  1348. // -----------------------------------------------------------------------

  1349. // Global options

  1350. 

  1351. void CarlaEngine::setOption(const EngineOption option, const int value, const char* const valueStr) noexcept

  1352. {

  1353.     carla_debug("CarlaEngine::setOption(%i:%s, %i, \"%s\")", option, EngineOption2Str(option), value, valueStr);

  1354. 

  1355.     if (isRunning() && (option == ENGINE_OPTION_PROCESS_MODE || option == ENGINE_OPTION_AUDIO_NUM_PERIODS || option == ENGINE_OPTION_AUDIO_DEVICE))

  1356.         return carla_stderr("CarlaEngine::setOption(%i:%s, %i, \"%s\") - Cannot set this option while engine is running!", option, EngineOption2Str(option), value, valueStr);

  1357. 

  1358.     switch (option)

  1359.     {

  1360.     case ENGINE_OPTION_DEBUG:

  1361.     case ENGINE_OPTION_NSM_INIT:

  1362.         break;

  1363. 

  1364.     case ENGINE_OPTION_PROCESS_MODE:

  1365.         CARLA_SAFE_ASSERT_RETURN(value >= ENGINE_PROCESS_MODE_SINGLE_CLIENT && value <= ENGINE_PROCESS_MODE_BRIDGE,);

  1366.         pData->options.processMode = static_cast<EngineProcessMode>(value);

  1367.         break;

  1368. 

  1369.     case ENGINE_OPTION_TRANSPORT_MODE:

  1370.         CARLA_SAFE_ASSERT_RETURN(value >= ENGINE_TRANSPORT_MODE_INTERNAL && value <= ENGINE_TRANSPORT_MODE_BRIDGE,);

  1371.         pData->options.transportMode = static_cast<EngineTransportMode>(value);

  1372.         break;

  1373. 

  1374.     case ENGINE_OPTION_FORCE_STEREO:

  1375.         CARLA_SAFE_ASSERT_RETURN(value == 0 || value == 1,);

  1376.         pData->options.forceStereo = (value != 0);

  1377.         break;

  1378. 

  1379.     case ENGINE_OPTION_PREFER_PLUGIN_BRIDGES:

  1380.         CARLA_SAFE_ASSERT_RETURN(value == 0 || value == 1,);

  1381.         pData->options.preferPluginBridges = (value != 0);

  1382.         break;

  1383. 

  1384.     case ENGINE_OPTION_PREFER_UI_BRIDGES:

  1385.         CARLA_SAFE_ASSERT_RETURN(value == 0 || value == 1,);

  1386.         pData->options.preferUiBridges = (value != 0);

  1387.         break;

  1388. 

  1389.     case ENGINE_OPTION_UIS_ALWAYS_ON_TOP:

  1390.         CARLA_SAFE_ASSERT_RETURN(value == 0 || value == 1,);

  1391.         pData->options.uisAlwaysOnTop = (value != 0);

  1392.         break;

  1393. 

  1394.     case ENGINE_OPTION_MAX_PARAMETERS:

  1395.         CARLA_SAFE_ASSERT_RETURN(value >= 0,);

  1396.         pData->options.maxParameters = static_cast<uint>(value);

  1397.         break;

  1398. 

  1399.     case ENGINE_OPTION_UI_BRIDGES_TIMEOUT:

  1400.         CARLA_SAFE_ASSERT_RETURN(value >= 0,);

  1401.         pData->options.uiBridgesTimeout = static_cast<uint>(value);

  1402.         break;

  1403. 

  1404.     case ENGINE_OPTION_AUDIO_NUM_PERIODS:

  1405.         CARLA_SAFE_ASSERT_RETURN(value >= 2 && value <= 3,);

  1406.         pData->options.audioNumPeriods = static_cast<uint>(value);

  1407.         break;

  1408. 

  1409.     case ENGINE_OPTION_AUDIO_BUFFER_SIZE:

  1410.         CARLA_SAFE_ASSERT_RETURN(value >= 8,);

  1411.         pData->options.audioBufferSize = static_cast<uint>(value);

  1412.         break;

  1413. 

  1414.     case ENGINE_OPTION_AUDIO_SAMPLE_RATE:

  1415.         CARLA_SAFE_ASSERT_RETURN(value >= 22050,);

  1416.         pData->options.audioSampleRate = static_cast<uint>(value);

  1417.         break;

  1418. 

  1419.     case ENGINE_OPTION_AUDIO_DEVICE:

  1420.         CARLA_SAFE_ASSERT_RETURN(valueStr != nullptr,);

  1421. 

  1422.         if (pData->options.audioDevice != nullptr)

  1423.             delete[] pData->options.audioDevice;

  1424. 

  1425.         pData->options.audioDevice = carla_strdup_safe(valueStr);

  1426.         break;

  1427. 

  1428.     case ENGINE_OPTION_PATH_BINARIES:

  1429.         CARLA_SAFE_ASSERT_RETURN(valueStr != nullptr && valueStr[0] != '\0',);

  1430. 

  1431.         if (pData->options.binaryDir != nullptr)

  1432.             delete[] pData->options.binaryDir;

  1433. 

  1434.         pData->options.binaryDir = carla_strdup_safe(valueStr);

  1435.         break;

  1436. 

  1437.     case ENGINE_OPTION_PATH_RESOURCES:

  1438.         CARLA_SAFE_ASSERT_RETURN(valueStr != nullptr && valueStr[0] != '\0',);

  1439. 

  1440.         if (pData->options.resourceDir != nullptr)

  1441.             delete[] pData->options.resourceDir;

  1442. 

  1443.         pData->options.resourceDir = carla_strdup_safe(valueStr);

  1444.         break;

  1445. 

  1446.     case ENGINE_OPTION_FRONTEND_WIN_ID:

  1447.         CARLA_SAFE_ASSERT_RETURN(valueStr != nullptr && valueStr[0] != '\0',);

  1448.         const long long winId(std::strtoll(valueStr, nullptr, 16));

  1449.         CARLA_SAFE_ASSERT_RETURN(winId >= 0,);

  1450.         pData->options.frontendWinId = static_cast<uintptr_t>(winId);

  1451.         break;

  1452.     }

  1453. }

  1454. 

  1455. // -----------------------------------------------------------------------

  1456. // OSC Stuff

  1457. 

  1458. #ifdef BUILD_BRIDGE

  1459. bool CarlaEngine::isOscBridgeRegistered() const noexcept

  1460. {

  1461.     return (pData->oscData != nullptr);

  1462. }

  1463. #else

  1464. bool CarlaEngine::isOscControlRegistered() const noexcept

  1465. {

  1466.     return pData->osc.isControlRegistered();

  1467. }

  1468. #endif

  1469. 

  1470. void CarlaEngine::idleOsc() const noexcept

  1471. {

  1472.     pData->osc.idle();

  1473. }

  1474. 

  1475. const char* CarlaEngine::getOscServerPathTCP() const noexcept

  1476. {

  1477.     return pData->osc.getServerPathTCP();

  1478. }

  1479. 

  1480. const char* CarlaEngine::getOscServerPathUDP() const noexcept

  1481. {

  1482.     return pData->osc.getServerPathUDP();

  1483. }

  1484. 

  1485. #ifdef BUILD_BRIDGE

  1486. void CarlaEngine::setOscBridgeData(const CarlaOscData* const oscData) const noexcept

  1487. {

  1488.     pData->oscData = oscData;

  1489. }

  1490. #endif

  1491. 

  1492. // -----------------------------------------------------------------------

  1493. // Helper functions

  1494. 

  1495. EngineEvent* CarlaEngine::getInternalEventBuffer(const bool isInput) const noexcept

  1496. {

  1497.     return isInput ? pData->events.in : pData->events.out;

  1498. }

  1499. 

  1500. void CarlaEngine::registerEnginePlugin(const uint id, CarlaPlugin* const plugin) noexcept

  1501. {

  1502.     CARLA_SAFE_ASSERT_RETURN(id == pData->curPluginCount,);

  1503.     carla_debug("CarlaEngine::registerEnginePlugin(%i, %p)", id, plugin);

  1504. 

  1505.     pData->plugins[id].plugin = plugin;

  1506. }

  1507. 

  1508. // -----------------------------------------------------------------------

  1509. // Internal stuff

  1510. 

  1511. void CarlaEngine::bufferSizeChanged(const uint32_t newBufferSize)

  1512. {

  1513.     carla_debug("CarlaEngine::bufferSizeChanged(%i)", newBufferSize);

  1514. 

  1515. #ifndef BUILD_BRIDGE

  1516.     pData->graph.setBufferSize(newBufferSize);

  1517. #endif

  1518. 

  1519.     for (uint i=0; i < pData->curPluginCount; ++i)

  1520.     {

  1521.         CarlaPlugin* const plugin(pData->plugins[i].plugin);

  1522. 

  1523.         if (plugin != nullptr && plugin->isEnabled())

  1524.             plugin->bufferSizeChanged(newBufferSize);

  1525.     }

  1526. 

  1527.     callback(ENGINE_CALLBACK_BUFFER_SIZE_CHANGED, 0, static_cast<int>(newBufferSize), 0, 0.0f, nullptr);

  1528. }

  1529. 

  1530. void CarlaEngine::sampleRateChanged(const double newSampleRate)

  1531. {

  1532.     carla_debug("CarlaEngine::sampleRateChanged(%g)", newSampleRate);

  1533. 

  1534. #ifndef BUILD_BRIDGE

  1535.     pData->graph.setSampleRate(newSampleRate);

  1536. #endif

  1537. 

  1538.     for (uint i=0; i < pData->curPluginCount; ++i)

  1539.     {

  1540.         CarlaPlugin* const plugin(pData->plugins[i].plugin);

  1541. 

  1542.         if (plugin != nullptr && plugin->isEnabled())

  1543.             plugin->sampleRateChanged(newSampleRate);

  1544.     }

  1545. 

  1546.     callback(ENGINE_CALLBACK_SAMPLE_RATE_CHANGED, 0, 0, 0, static_cast<float>(newSampleRate), nullptr);

  1547. }

  1548. 

  1549. void CarlaEngine::offlineModeChanged(const bool isOfflineNow)

  1550. {

  1551.     carla_debug("CarlaEngine::offlineModeChanged(%s)", bool2str(isOfflineNow));

  1552. 

  1553. #ifndef BUILD_BRIDGE

  1554.     pData->graph.setOffline(isOfflineNow);

  1555. #endif

  1556. 

  1557.     for (uint i=0; i < pData->curPluginCount; ++i)

  1558.     {

  1559.         CarlaPlugin* const plugin(pData->plugins[i].plugin);

  1560. 

  1561.         if (plugin != nullptr && plugin->isEnabled())

  1562.             plugin->offlineModeChanged(isOfflineNow);

  1563.     }

  1564. }

  1565. 

  1566. void CarlaEngine::runPendingRtEvents() noexcept

  1567. {

  1568.     pData->doNextPluginAction(true);

  1569. 

  1570.     if (pData->time.playing)

  1571.         pData->time.frame += pData->bufferSize;

  1572. 

  1573.     if (pData->options.transportMode == ENGINE_TRANSPORT_MODE_INTERNAL)

  1574.     {

  1575.         pData->timeInfo.playing = pData->time.playing;

  1576.         pData->timeInfo.frame   = pData->time.frame;

  1577.     }

  1578. }

  1579. 

  1580. void CarlaEngine::setPluginPeaks(const uint pluginId, float const inPeaks[2], float const outPeaks[2]) noexcept

  1581. {

  1582.     EnginePluginData& pluginData(pData->plugins[pluginId]);

  1583. 

  1584.     pluginData.insPeak[0]  = inPeaks[0];

  1585.     pluginData.insPeak[1]  = inPeaks[1];

  1586.     pluginData.outsPeak[0] = outPeaks[0];

  1587.     pluginData.outsPeak[1] = outPeaks[1];

  1588. }

  1589. 

  1590. // -----------------------------------------------------------------------

  1591. 

  1592. CARLA_BACKEND_END_NAMESPACE