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

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  1. /*

  2.  * Carla Plugin Host

  3.  * Copyright (C) 2011-2017 Filipe Coelho <falktx@falktx.com>

  4.  *

  5.  * This program is free software; you can redistribute it and/or

  6.  * modify it under the terms of the GNU General Public License as

  7.  * published by the Free Software Foundation; either version 2 of

  8.  * the License, or any later version.

  9.  *

  10.  * This program is distributed in the hope that it will be useful,

  11.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  12.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

  13.  * GNU General Public License for more details.

  14.  *

  15.  * For a full copy of the GNU General Public License see the doc/GPL.txt file.

  16.  */

  17. 

  18. #include "CarlaDefines.h"

  19. 

  20. #ifdef BUILD_BRIDGE

  21. # error This file should not be compiled if building bridge

  22. #endif

  23. 

  24. #include "CarlaEngineInternal.hpp"

  25. #include "CarlaPlugin.hpp"

  26. 

  27. #include "CarlaBackendUtils.hpp"

  28. #include "CarlaBase64Utils.hpp"

  29. #include "CarlaBinaryUtils.hpp"

  30. #include "CarlaMathUtils.hpp"

  31. #include "CarlaStateUtils.hpp"

  32. 

  33. #include "CarlaExternalUI.hpp"

  34. #include "CarlaHost.h"

  35. #include "CarlaNative.hpp"

  36. 

  37. #include "juce_audio_basics/juce_audio_basics.h"

  38. 

  39. using juce::File;

  40. using juce::FloatVectorOperations;

  41. using juce::MemoryOutputStream;

  42. using juce::ScopedPointer;

  43. using juce::SharedResourcePointer;

  44. using juce::String;

  45. using juce::XmlDocument;

  46. using juce::XmlElement;

  47. 

  48. CARLA_BACKEND_START_NAMESPACE

  49. 

  50. // -----------------------------------------------------------------------

  51. 

  52. class CarlaEngineNativeUI : public CarlaExternalUI

  53. {

  54. public:

  55.     CarlaEngineNativeUI(CarlaEngine* const engine)

  56.         : fEngine(engine),

  57.           fRemoteWinId(0)

  58.     {

  59.         carla_debug("CarlaEngineNativeUI::CarlaEngineNativeUI(%p)", engine);

  60.     }

  61. 

  62.     ~CarlaEngineNativeUI() noexcept override

  63.     {

  64.         carla_debug("CarlaEngineNativeUI::~CarlaEngineNativeUI()");

  65.     }

  66. 

  67.     bool isReady() const noexcept

  68.     {

  69.         return fRemoteWinId != 0;

  70.     }

  71. 

  72.     intptr_t getRemoteWinId() const noexcept

  73.     {

  74.         return fRemoteWinId;

  75.     }

  76. 

  77. protected:

  78.     bool msgReceived(const char* const msg) noexcept override

  79.     {

  80.         if (CarlaExternalUI::msgReceived(msg))

  81.             return true;

  82. 

  83.         bool ok = true;

  84. 

  85.         if (std::strcmp(msg, "set_engine_option") == 0)

  86.         {

  87.             uint32_t option;

  88.             int32_t value;

  89.             const char* valueStr = nullptr;

  90. 

  91.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(option), true);

  92.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsInt(value), true);

  93.             readNextLineAsString(valueStr); // can be null

  94. 

  95.             try {

  96.                 fEngine->setOption(static_cast<EngineOption>(option), value, valueStr);

  97.             } CARLA_SAFE_EXCEPTION("setOption");

  98. 

  99.             if (valueStr != nullptr)

  100.                 delete[] valueStr;

  101.         }

  102.         else if (std::strcmp(msg, "load_file") == 0)

  103.         {

  104.             const char* filename;

  105. 

  106.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsString(filename), true);

  107. 

  108.             try {

  109.                 ok = fEngine->loadFile(filename);

  110.             } CARLA_SAFE_EXCEPTION("loadFile");

  111. 

  112.             delete[] filename;

  113.         }

  114.         else if (std::strcmp(msg, "load_project") == 0)

  115.         {

  116.             const char* filename;

  117. 

  118.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsString(filename), true);

  119. 

  120.             try {

  121.                 ok = fEngine->loadProject(filename);

  122.             } CARLA_SAFE_EXCEPTION("loadProject");

  123. 

  124.             delete[] filename;

  125.         }

  126.         else if (std::strcmp(msg, "save_project") == 0)

  127.         {

  128.             const char* filename;

  129. 

  130.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsString(filename), true);

  131. 

  132.             try {

  133.                 ok = fEngine->saveProject(filename);

  134.             } CARLA_SAFE_EXCEPTION("saveProject");

  135. 

  136.             delete[] filename;

  137.         }

  138.         else if (std::strcmp(msg, "patchbay_connect") == 0)

  139.         {

  140.             uint32_t groupA, portA, groupB, portB;

  141. 

  142.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(groupA), true);

  143.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(portA), true);

  144.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(groupB), true);

  145.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(portB), true);

  146. 

  147.             try {

  148.                 ok = fEngine->patchbayConnect(groupA, portA, groupB, portB);

  149.             } CARLA_SAFE_EXCEPTION("patchbayConnect");

  150.         }

  151.         else if (std::strcmp(msg, "patchbay_disconnect") == 0)

  152.         {

  153.             uint32_t connectionId;

  154. 

  155.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(connectionId), true);

  156. 

  157.             try {

  158.                 ok = fEngine->patchbayDisconnect(connectionId);

  159.             } CARLA_SAFE_EXCEPTION("patchbayDisconnect");

  160.         }

  161.         else if (std::strcmp(msg, "patchbay_refresh") == 0)

  162.         {

  163.             try {

  164.                 ok = fEngine->patchbayRefresh();

  165.             } CARLA_SAFE_EXCEPTION("patchbayRefresh");

  166.         }

  167.         else if (std::strcmp(msg, "transport_play") == 0)

  168.         {

  169.             fEngine->transportPlay();

  170.         }

  171.         else if (std::strcmp(msg, "transport_pause") == 0)

  172.         {

  173.             fEngine->transportPause();

  174.         }

  175.         else if (std::strcmp(msg, "transport_bpm") == 0)

  176.         {

  177.             double bpm;

  178. 

  179.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsDouble(bpm), true);

  180. 

  181.             fEngine->transportBPM(bpm);

  182.         }

  183.         else if (std::strcmp(msg, "transport_relocate") == 0)

  184.         {

  185.             uint64_t frame;

  186. 

  187.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsULong(frame), true);

  188. 

  189.             fEngine->transportRelocate(frame);

  190.         }

  191.         else if (std::strcmp(msg, "add_plugin") == 0)

  192.         {

  193.             uint32_t btype, ptype;

  194.             const char* filename = nullptr;

  195.             const char* name;

  196.             const char* label;

  197.             int64_t uniqueId;

  198.             uint options;

  199. 

  200.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(btype), true);

  201.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(ptype), true);

  202.             readNextLineAsString(filename); // can be null

  203.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsString(name), true);

  204.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsString(label), true);

  205.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsLong(uniqueId), true);

  206.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(options), true);

  207. 

  208.             if (filename != nullptr && std::strcmp(filename, "(null)") == 0)

  209.             {

  210.                 delete[] filename;

  211.                 filename = nullptr;

  212.             }

  213. 

  214.             if (std::strcmp(name, "(null)") == 0)

  215.             {

  216.                 delete[] name;

  217.                 name = nullptr;

  218.             }

  219. 

  220.             ok = fEngine->addPlugin(static_cast<BinaryType>(btype), static_cast<PluginType>(ptype),

  221.                                     filename, name, label, uniqueId, nullptr, options);

  222. 

  223.             if (filename != nullptr)

  224.                 delete[] filename;

  225.             if (name != nullptr)

  226.                 delete[] name;

  227.             delete[] label;

  228.         }

  229.         else if (std::strcmp(msg, "remove_plugin") == 0)

  230.         {

  231.             uint32_t pluginId;

  232. 

  233.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  234. 

  235.             ok = fEngine->removePlugin(pluginId);

  236.         }

  237.         else if (std::strcmp(msg, "remove_all_plugins") == 0)

  238.         {

  239.             ok = fEngine->removeAllPlugins();

  240.         }

  241.         else if (std::strcmp(msg, "rename_plugin") == 0)

  242.         {

  243.             uint32_t pluginId;

  244.             const char* newName;

  245. 

  246.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  247.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsString(newName), true);

  248. 

  249.             // TODO

  250.             /*const char* name =*/ fEngine->renamePlugin(pluginId, newName);

  251. 

  252.             delete[] newName;

  253.         }

  254.         else if (std::strcmp(msg, "clone_plugin") == 0)

  255.         {

  256.             uint32_t pluginId;

  257. 

  258.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  259. 

  260.             ok = fEngine->clonePlugin(pluginId);

  261.         }

  262.         else if (std::strcmp(msg, "replace_plugin") == 0)

  263.         {

  264.             uint32_t pluginId;

  265. 

  266.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  267. 

  268.             ok = fEngine->replacePlugin(pluginId);

  269.         }

  270.         else if (std::strcmp(msg, "switch_plugins") == 0)

  271.         {

  272.             uint32_t pluginIdA, pluginIdB;

  273. 

  274.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginIdA), true);

  275.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginIdB), true);

  276. 

  277.             ok = fEngine->switchPlugins(pluginIdA, pluginIdB);

  278.         }

  279.         else if (std::strcmp(msg, "load_plugin_state") == 0)

  280.         {

  281.             uint32_t pluginId;

  282.             const char* filename;

  283. 

  284.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  285.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsString(filename), true);

  286. 

  287.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  288.                 plugin->loadStateFromFile(filename);

  289. 

  290.             delete[] filename;

  291.         }

  292.         else if (std::strcmp(msg, "save_plugin_state") == 0)

  293.         {

  294.             uint32_t pluginId;

  295.             const char* filename;

  296. 

  297.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  298.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsString(filename), true);

  299. 

  300.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  301.                 plugin->saveStateToFile(filename);

  302. 

  303.             delete[] filename;

  304.         }

  305.         else if (std::strcmp(msg, "set_option") == 0)

  306.         {

  307.             uint32_t pluginId, option;

  308.             bool yesNo;

  309. 

  310.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  311.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(option), true);

  312.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsBool(yesNo), true);

  313. 

  314.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  315.                 plugin->setOption(option, yesNo, false);

  316.         }

  317.         else if (std::strcmp(msg, "set_active") == 0)

  318.         {

  319.             uint32_t pluginId;

  320.             bool onOff;

  321. 

  322.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  323.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsBool(onOff), true);

  324. 

  325.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  326.                 plugin->setActive(onOff, true, false);

  327.         }

  328.         else if (std::strcmp(msg, "set_drywet") == 0)

  329.         {

  330.             uint32_t pluginId;

  331.             float value;

  332. 

  333.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  334.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsFloat(value), true);

  335. 

  336.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  337.                 plugin->setDryWet(value, true, false);

  338.         }

  339.         else if (std::strcmp(msg, "set_volume") == 0)

  340.         {

  341.             uint32_t pluginId;

  342.             float value;

  343. 

  344.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  345.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsFloat(value), true);

  346. 

  347.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  348.                 plugin->setVolume(value, true, false);

  349.         }

  350.         else if (std::strcmp(msg, "set_balance_left") == 0)

  351.         {

  352.             uint32_t pluginId;

  353.             float value;

  354. 

  355.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  356.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsFloat(value), true);

  357. 

  358.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  359.                 plugin->setBalanceLeft(value, true, false);

  360.         }

  361.         else if (std::strcmp(msg, "set_balance_right") == 0)

  362.         {

  363.             uint32_t pluginId;

  364.             float value;

  365. 

  366.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  367.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsFloat(value), true);

  368. 

  369.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  370.                 plugin->setBalanceRight(value, true, false);

  371.         }

  372.         else if (std::strcmp(msg, "set_panning") == 0)

  373.         {

  374.             uint32_t pluginId;

  375.             float value;

  376. 

  377.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  378.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsFloat(value), true);

  379. 

  380.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  381.                 plugin->setPanning(value, true, false);

  382.         }

  383.         else if (std::strcmp(msg, "set_ctrl_channel") == 0)

  384.         {

  385.             uint32_t pluginId;

  386.             int32_t channel;

  387. 

  388.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  389.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsInt(channel), true);

  390.             CARLA_SAFE_ASSERT_RETURN(channel >= -1 && channel < MAX_MIDI_CHANNELS, true);

  391. 

  392.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  393.                 plugin->setCtrlChannel(int8_t(channel), true, false);

  394.         }

  395.         else if (std::strcmp(msg, "set_parameter_value") == 0)

  396.         {

  397.             uint32_t pluginId, parameterId;

  398.             float value;

  399. 

  400.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  401.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(parameterId), true);

  402.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsFloat(value), true);

  403. 

  404.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  405.                 plugin->setParameterValue(parameterId, value, true, true, false);

  406.         }

  407.         else if (std::strcmp(msg, "set_parameter_midi_channel") == 0)

  408.         {

  409.             uint32_t pluginId, parameterId, channel;

  410. 

  411.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  412.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(parameterId), true);

  413.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(channel), true);

  414.             CARLA_SAFE_ASSERT_RETURN(channel < MAX_MIDI_CHANNELS, true);

  415. 

  416.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  417.                 plugin->setParameterMidiChannel(parameterId, static_cast<uint8_t>(channel), true, false);

  418.         }

  419.         else if (std::strcmp(msg, "set_parameter_midi_cc") == 0)

  420.         {

  421.             uint32_t pluginId, parameterId;

  422.             int32_t cc;

  423. 

  424.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  425.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(parameterId), true);

  426.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsInt(cc), true);

  427.             CARLA_SAFE_ASSERT_RETURN(cc >= -1 && cc < MAX_MIDI_CONTROL, true);

  428. 

  429.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  430.                 plugin->setParameterMidiCC(parameterId, static_cast<int16_t>(cc), true, false);

  431.         }

  432.         else if (std::strcmp(msg, "set_program") == 0)

  433.         {

  434.             uint32_t pluginId;

  435.             int32_t index;

  436. 

  437.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  438.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsInt(index), true);

  439. 

  440.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  441.             {

  442.                 plugin->setProgram(index, true, true, false);

  443.                 _updateParamValues(plugin, pluginId);

  444.             }

  445.         }

  446.         else if (std::strcmp(msg, "set_midi_program") == 0)

  447.         {

  448.             uint32_t pluginId;

  449.             int32_t index;

  450. 

  451.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  452.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsInt(index), true);

  453. 

  454.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  455.             {

  456.                 plugin->setMidiProgram(index, true, true, false);

  457.                 _updateParamValues(plugin, pluginId);

  458.             }

  459.         }

  460.         else if (std::strcmp(msg, "set_custom_data") == 0)

  461.         {

  462.             uint32_t pluginId;

  463.             const char* type;

  464.             const char* key;

  465.             const char* value;

  466. 

  467.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  468.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsString(type), true);

  469.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsString(key), true);

  470.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsString(value), true);

  471. 

  472.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  473.                 plugin->setCustomData(type, key, value, true);

  474. 

  475.             delete[] type;

  476.             delete[] key;

  477.             delete[] value;

  478.         }

  479.         else if (std::strcmp(msg, "set_chunk_data") == 0)

  480.         {

  481.             uint32_t pluginId;

  482.             const char* cdata;

  483. 

  484.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  485.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsString(cdata), true);

  486. 

  487.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  488.             {

  489.                 std::vector<uint8_t> chunk(carla_getChunkFromBase64String(cdata));

  490.                 plugin->setChunkData(chunk.data(), chunk.size());

  491.             }

  492. 

  493.             delete[] cdata;

  494.         }

  495.         else if (std::strcmp(msg, "prepare_for_save") == 0)

  496.         {

  497.             uint32_t pluginId;

  498. 

  499.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  500. 

  501.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  502.                 plugin->prepareForSave();

  503.         }

  504.         else if (std::strcmp(msg, "reset_parameters") == 0)

  505.         {

  506.             uint32_t pluginId;

  507. 

  508.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  509. 

  510.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  511.                 plugin->resetParameters();

  512.         }

  513.         else if (std::strcmp(msg, "randomize_parameters") == 0)

  514.         {

  515.             uint32_t pluginId;

  516. 

  517.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  518. 

  519.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  520.                 plugin->randomizeParameters();

  521.         }

  522.         else if (std::strcmp(msg, "send_midi_note") == 0)

  523.         {

  524.             uint32_t pluginId, channel, note, velocity;

  525. 

  526.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  527.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(channel), true);

  528.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(note), true);

  529.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(velocity), true);

  530.             CARLA_SAFE_ASSERT_RETURN(channel < MAX_MIDI_CHANNELS, true);

  531.             CARLA_SAFE_ASSERT_RETURN(note < MAX_MIDI_VALUE, true);

  532.             CARLA_SAFE_ASSERT_RETURN(velocity < MAX_MIDI_VALUE, true);

  533. 

  534.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  535.                 plugin->sendMidiSingleNote(static_cast<uint8_t>(channel), static_cast<uint8_t>(note), static_cast<uint8_t>(velocity), true, true, false);

  536.         }

  537.         else if (std::strcmp(msg, "show_custom_ui") == 0)

  538.         {

  539.             uint32_t pluginId;

  540.             bool yesNo;

  541. 

  542.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsUInt(pluginId), true);

  543.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsBool(yesNo), true);

  544. 

  545.             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))

  546.                 plugin->showCustomUI(yesNo);

  547.         }

  548.         else if (std::strcmp(msg, "ready") == 0)

  549.         {

  550.             uint64_t winId;

  551. 

  552.             CARLA_SAFE_ASSERT_RETURN(readNextLineAsULong(winId), true);

  553. 

  554.             fRemoteWinId = static_cast<intptr_t>(winId);

  555.         }

  556.         else

  557.         {

  558.             carla_stderr("CarlaEngineNativeUI::msgReceived : %s", msg);

  559.             return false;

  560.         }

  561. 

  562.         if (! ok)

  563.         {

  564.             const CarlaMutexLocker cml(getPipeLock());

  565.             writeMessage("error\n", 6);

  566.             writeAndFixMessage(fEngine->getLastError());

  567.             flushMessages();

  568.         }

  569. 

  570.         return true;

  571.     }

  572. 

  573. private:

  574.     CarlaEngine* const fEngine;

  575.     intptr_t           fRemoteWinId;

  576. 

  577.     void _updateParamValues(CarlaPlugin* const plugin, const uint32_t pluginId) const noexcept

  578.     {

  579.         for (uint32_t i=0, count=plugin->getParameterCount(); i<count; ++i)

  580.             fEngine->callback(ENGINE_CALLBACK_PARAMETER_VALUE_CHANGED,

  581.                               pluginId, static_cast<int>(i), 0, plugin->getParameterValue(i), nullptr);

  582.     }

  583. 

  584.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CarlaEngineNativeUI)

  585. };

  586. 

  587. // -----------------------------------------------------------------------

  588. 

  589. class CarlaEngineNative : public CarlaEngine

  590. {

  591. public:

  592.     CarlaEngineNative(const NativeHostDescriptor* const host, const uint32_t inChan = 2, uint32_t outChan = 0)

  593.         : CarlaEngine(),

  594.           pHost(host),

  595.           fIsActive(false),

  596.           fIsRunning(false),

  597.           fUiServer(this),

  598.           fOptionsForced(false),

  599.           fWaitForReadyMsg(false)

  600.     {

  601.         carla_debug("CarlaEngineNative::CarlaEngineNative()");

  602. 

  603.         carla_zeroChars(fTmpBuf, STR_MAX+1);

  604. 

  605.         pData->bufferSize = pHost->get_buffer_size(pHost->handle);

  606.         pData->sampleRate = pHost->get_sample_rate(pHost->handle);

  607.         pData->initTime(nullptr);

  608. 

  609.         if (outChan == 0)

  610.             outChan = inChan;

  611. 

  612.         CARLA_SAFE_ASSERT(inChan == 2);

  613.         CARLA_SAFE_ASSERT(outChan == 2);

  614.         pData->options.processMode         = ENGINE_PROCESS_MODE_CONTINUOUS_RACK;

  615.         pData->options.transportMode       = ENGINE_TRANSPORT_MODE_PLUGIN;

  616.         pData->options.forceStereo         = true;

  617.         pData->options.preferPluginBridges = false;

  618.         pData->options.preferUiBridges     = false;

  619.         init("Carla-Rack");

  620.         pData->graph.create(0, 0); // FIXME?

  621. 

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

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

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

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

  626. 

  627.         pData->options.resourceDir = carla_strdup(pHost->resourceDir);

  628.         pData->options.binaryDir   = carla_strdup(carla_get_library_folder());

  629. 

  630.         setCallback(_ui_server_callback, this);

  631.     }

  632. 

  633.     ~CarlaEngineNative() override

  634.     {

  635.         CARLA_SAFE_ASSERT(! fIsActive);

  636.         carla_debug("CarlaEngineNative::~CarlaEngineNative() - START");

  637. 

  638.         pData->aboutToClose = true;

  639.         fIsRunning = false;

  640. 

  641.         removeAllPlugins();

  642.         //runPendingRtEvents();

  643.         close();

  644. 

  645.         pData->graph.destroy();

  646. 

  647.         carla_debug("CarlaEngineNative::~CarlaEngineNative() - END");

  648.     }

  649. 

  650. protected:

  651.     // -------------------------------------

  652.     // CarlaEngine virtual calls

  653. 

  654.     bool init(const char* const clientName) override

  655.     {

  656.         carla_debug("CarlaEngineNative::init(\"%s\")", clientName);

  657. 

  658.         fIsRunning = true;

  659. 

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

  661.         {

  662.             close();

  663.             setLastError("Failed to init internal data");

  664.             return false;

  665.         }

  666. 

  667.         pData->bufferSize = pHost->get_buffer_size(pHost->handle);

  668.         pData->sampleRate = pHost->get_sample_rate(pHost->handle);

  669. 

  670.         return true;

  671.     }

  672. 

  673.     bool close() override

  674.     {

  675.         fIsRunning = false;

  676.         CarlaEngine::close();

  677.         return true;

  678.     }

  679. 

  680.     bool isRunning() const noexcept override

  681.     {

  682.         return fIsRunning;

  683.     }

  684. 

  685.     bool isOffline() const noexcept override

  686.     {

  687.         return pHost->is_offline(pHost->handle);

  688.     }

  689. 

  690.     bool usesConstantBufferSize() const noexcept override

  691.     {

  692.         // TODO

  693.         return true;

  694.     }

  695. 

  696.     EngineType getType() const noexcept override

  697.     {

  698.         return kEngineTypePlugin;

  699.     }

  700. 

  701.     const char* getCurrentDriverName() const noexcept override

  702.     {

  703.         return "Plugin";

  704.     }

  705. 

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

  707.     {

  708.         CarlaEngine::callback(action, pluginId, value1, value2, value3, valueStr);

  709. 

  710.         if (action == ENGINE_CALLBACK_IDLE && ! pData->aboutToClose)

  711.             pHost->dispatcher(pHost->handle, NATIVE_HOST_OPCODE_HOST_IDLE, 0, 0, nullptr, 0.0f);

  712.     }

  713. 

  714.     // -------------------------------------------------------------------

  715. 

  716.     const char* renamePlugin(const uint id, const char* const newName) override

  717.     {

  718.         if (const char* const retName = CarlaEngine::renamePlugin(id, newName))

  719.         {

  720.             uiServerCallback(ENGINE_CALLBACK_PLUGIN_RENAMED, id, 0, 0, 0.0f, retName);

  721.             return retName;

  722.         }

  723. 

  724.         return nullptr;

  725.     }

  726. 

  727.     // -------------------------------------------------------------------

  728. 

  729.     void bufferSizeChanged(const uint32_t newBufferSize)

  730.     {

  731.         if (pData->bufferSize == newBufferSize)

  732.             return;

  733. 

  734.         {

  735.             const CarlaMutexLocker cml(fUiServer.getPipeLock());

  736. 

  737.             fUiServer.writeAndFixMessage("buffer-size");

  738.             std::sprintf(fTmpBuf, "%i\n", newBufferSize);

  739.             fUiServer.writeMessage(fTmpBuf);

  740.             fUiServer.flushMessages();

  741.         }

  742. 

  743.         pData->bufferSize = newBufferSize;

  744.         CarlaEngine::bufferSizeChanged(newBufferSize);

  745.     }

  746. 

  747.     void sampleRateChanged(const double newSampleRate)

  748.     {

  749.         if (carla_isEqual(pData->sampleRate, newSampleRate))

  750.             return;

  751. 

  752.         {

  753.             const CarlaMutexLocker cml(fUiServer.getPipeLock());

  754.             const ScopedLocale csl;

  755. 

  756.             fUiServer.writeAndFixMessage("sample-rate");

  757.             std::sprintf(fTmpBuf, "%f\n", newSampleRate);

  758.             fUiServer.writeMessage(fTmpBuf);

  759.             fUiServer.flushMessages();

  760.         }

  761. 

  762.         pData->sampleRate = newSampleRate;

  763.         CarlaEngine::sampleRateChanged(newSampleRate);

  764.     }

  765. 

  766.     // -------------------------------------------------------------------

  767. 

  768.     void uiServerSendPluginInfo(CarlaPlugin* const plugin)

  769.     {

  770.         const CarlaMutexLocker cml(fUiServer.getPipeLock());

  771. 

  772.         const uint pluginId(plugin->getId());

  773. 

  774.         std::sprintf(fTmpBuf, "PLUGIN_INFO_%i\n", pluginId);

  775.         fUiServer.writeMessage(fTmpBuf);

  776. 

  777.         std::sprintf(fTmpBuf, "%i:%i:%i:" P_INT64 ":%i:%i\n", plugin->getType(), plugin->getCategory(), plugin->getHints(), plugin->getUniqueId(), plugin->getOptionsAvailable(), plugin->getOptionsEnabled());

  778.         fUiServer.writeMessage(fTmpBuf);

  779. 

  780.         if (const char* const filename = plugin->getFilename())

  781.         {

  782.             std::sprintf(fTmpBuf, "%s", filename);

  783.             fUiServer.writeAndFixMessage(fTmpBuf);

  784.         }

  785.         else

  786.             fUiServer.writeMessage("\n");

  787. 

  788.         if (const char* const name = plugin->getName())

  789.         {

  790.             std::sprintf(fTmpBuf, "%s", name);

  791.             fUiServer.writeAndFixMessage(fTmpBuf);

  792.         }

  793.         else

  794.             fUiServer.writeMessage("\n");

  795. 

  796.         if (const char* const iconName = plugin->getIconName())

  797.         {

  798.             std::sprintf(fTmpBuf, "%s", iconName);

  799.             fUiServer.writeAndFixMessage(fTmpBuf);

  800.         }

  801.         else

  802.             fUiServer.writeMessage("\n");

  803. 

  804.         plugin->getRealName(fTmpBuf);

  805.         fUiServer.writeAndFixMessage(fTmpBuf);

  806. 

  807.         plugin->getLabel(fTmpBuf);

  808.         fUiServer.writeAndFixMessage(fTmpBuf);

  809. 

  810.         plugin->getMaker(fTmpBuf);

  811.         fUiServer.writeAndFixMessage(fTmpBuf);

  812. 

  813.         plugin->getCopyright(fTmpBuf);

  814.         fUiServer.writeAndFixMessage(fTmpBuf);

  815. 

  816.         std::sprintf(fTmpBuf, "AUDIO_COUNT_%i:%i:%i\n", pluginId, plugin->getAudioInCount(), plugin->getAudioOutCount());

  817.         fUiServer.writeMessage(fTmpBuf);

  818. 

  819.         std::sprintf(fTmpBuf, "MIDI_COUNT_%i:%i:%i\n", pluginId, plugin->getMidiInCount(), plugin->getMidiOutCount());

  820.         fUiServer.writeMessage(fTmpBuf);

  821. 

  822.         fUiServer.flushMessages();

  823.     }

  824. 

  825.     void uiServerSendPluginParameters(CarlaPlugin* const plugin)

  826.     {

  827.         const CarlaMutexLocker cml(fUiServer.getPipeLock());

  828.         const ScopedLocale csl;

  829. 

  830.         const uint pluginId(plugin->getId());

  831. 

  832.         for (int32_t i=PARAMETER_ACTIVE; i>PARAMETER_MAX; --i)

  833.         {

  834.             std::sprintf(fTmpBuf, "PARAMVAL_%i:%i\n", pluginId, i);

  835.             fUiServer.writeMessage(fTmpBuf);

  836.             std::sprintf(fTmpBuf, "%f\n", plugin->getInternalParameterValue(i));

  837.             fUiServer.writeMessage(fTmpBuf);

  838.             fUiServer.flushMessages();

  839.         }

  840. 

  841.         uint32_t ins, outs, count;

  842.         plugin->getParameterCountInfo(ins, outs);

  843.         count = plugin->getParameterCount();

  844.         std::sprintf(fTmpBuf, "PARAMETER_COUNT_%i:%i:%i:%i\n", pluginId, ins, outs, count);

  845.         fUiServer.writeMessage(fTmpBuf);

  846. 

  847.         for (uint32_t i=0; i<count; ++i)

  848.         {

  849.             const ParameterData& paramData(plugin->getParameterData(i));

  850.             const ParameterRanges& paramRanges(plugin->getParameterRanges(i));

  851. 

  852.             std::sprintf(fTmpBuf, "PARAMETER_DATA_%i:%i\n", pluginId, i);

  853.             fUiServer.writeMessage(fTmpBuf);

  854.             std::sprintf(fTmpBuf, "%i:%i:%i:%i\n", paramData.type, paramData.hints, paramData.midiChannel, paramData.midiCC);

  855.             fUiServer.writeMessage(fTmpBuf);

  856.             plugin->getParameterName(i, fTmpBuf);

  857.             fUiServer.writeAndFixMessage(fTmpBuf);

  858.             plugin->getParameterUnit(i, fTmpBuf);

  859.             fUiServer.writeAndFixMessage(fTmpBuf);

  860. 

  861.             std::sprintf(fTmpBuf, "PARAMETER_RANGES_%i:%i\n", pluginId, i);

  862.             fUiServer.writeMessage(fTmpBuf);

  863.             std::sprintf(fTmpBuf, "%f:%f:%f:%f:%f:%f\n", paramRanges.def, paramRanges.min, paramRanges.max, paramRanges.step, paramRanges.stepSmall, paramRanges.stepLarge);

  864.             fUiServer.writeMessage(fTmpBuf);

  865. 

  866.             std::sprintf(fTmpBuf, "PARAMVAL_%i:%i\n", pluginId, i);

  867.             fUiServer.writeMessage(fTmpBuf);

  868.             std::sprintf(fTmpBuf, "%f\n", plugin->getParameterValue(i));

  869.             fUiServer.writeMessage(fTmpBuf);

  870.         }

  871. 

  872.         fUiServer.flushMessages();

  873.     }

  874. 

  875.     void uiServerSendPluginPrograms(CarlaPlugin* const plugin)

  876.     {

  877.         const CarlaMutexLocker cml(fUiServer.getPipeLock());

  878. 

  879.         const uint pluginId(plugin->getId());

  880. 

  881.         uint32_t count = plugin->getProgramCount();

  882.         std::sprintf(fTmpBuf, "PROGRAM_COUNT_%i:%i:%i\n", pluginId, count, plugin->getCurrentProgram());

  883.         fUiServer.writeMessage(fTmpBuf);

  884. 

  885.         for (uint32_t i=0; i<count; ++i)

  886.         {

  887.             std::sprintf(fTmpBuf, "PROGRAM_NAME_%i:%i\n", pluginId, i);

  888.             fUiServer.writeMessage(fTmpBuf);

  889.             plugin->getProgramName(i, fTmpBuf);

  890.             fUiServer.writeAndFixMessage(fTmpBuf);

  891.         }

  892. 

  893.         fUiServer.flushMessages();

  894. 

  895.         count = plugin->getMidiProgramCount();

  896.         std::sprintf(fTmpBuf, "MIDI_PROGRAM_COUNT_%i:%i:%i\n", pluginId, count, plugin->getCurrentMidiProgram());

  897.         fUiServer.writeMessage(fTmpBuf);

  898. 

  899.         for (uint32_t i=0; i<count; ++i)

  900.         {

  901.             std::sprintf(fTmpBuf, "MIDI_PROGRAM_DATA_%i:%i\n", pluginId, i);

  902.             fUiServer.writeMessage(fTmpBuf);

  903. 

  904.             const MidiProgramData& mpData(plugin->getMidiProgramData(i));

  905.             std::sprintf(fTmpBuf, "%i:%i\n", mpData.bank, mpData.program);

  906.             fUiServer.writeMessage(fTmpBuf);

  907.             std::sprintf(fTmpBuf, "%s", mpData.name);

  908.             fUiServer.writeAndFixMessage(fTmpBuf);

  909.         }

  910. 

  911.         fUiServer.flushMessages();

  912.     }

  913. 

  914.     void uiServerSendPluginProperties(CarlaPlugin* const plugin)

  915.     {

  916.         const CarlaMutexLocker cml(fUiServer.getPipeLock());

  917. 

  918.         const uint pluginId(plugin->getId());

  919. 

  920.         uint32_t count = plugin->getCustomDataCount();

  921.         std::sprintf(fTmpBuf, "CUSTOM_DATA_COUNT_%i:%i\n", pluginId, count);

  922.         fUiServer.writeMessage(fTmpBuf);

  923. 

  924.         for (uint32_t i=0; i<count; ++i)

  925.         {

  926.             const CustomData& customData(plugin->getCustomData(i));

  927.             CARLA_SAFE_ASSERT_CONTINUE(customData.isValid());

  928. 

  929.             if (std::strcmp(customData.type, CUSTOM_DATA_TYPE_PROPERTY) != 0)

  930.                 continue;

  931. 

  932.             std::sprintf(fTmpBuf, "CUSTOM_DATA_%i:%i\n", pluginId, i);

  933.             fUiServer.writeMessage(fTmpBuf);

  934. 

  935.             fUiServer.writeAndFixMessage(customData.type);

  936.             fUiServer.writeAndFixMessage(customData.key);

  937.             fUiServer.writeAndFixMessage(customData.value);

  938.         }

  939. 

  940.         fUiServer.flushMessages();

  941.     }

  942. 

  943.     void uiServerCallback(const EngineCallbackOpcode action, const uint pluginId, const int value1, const int value2, const float value3, const char* const valueStr)

  944.     {

  945.         if (! fIsRunning)

  946.             return;

  947.         if (! fUiServer.isPipeRunning())

  948.             return;

  949. 

  950.         CarlaPlugin* plugin;

  951. 

  952.         switch (action)

  953.         {

  954.         case ENGINE_CALLBACK_UPDATE:

  955.             plugin = getPlugin(pluginId);

  956. 

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

  958.             {

  959.                 CARLA_SAFE_ASSERT_BREAK(plugin->getId() == pluginId);

  960.                 uiServerSendPluginProperties(plugin);

  961.             }

  962.             break;

  963. 

  964.         case ENGINE_CALLBACK_RELOAD_INFO:

  965.             plugin = getPlugin(pluginId);

  966. 

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

  968.             {

  969.                 CARLA_SAFE_ASSERT_BREAK(plugin->getId() == pluginId);

  970.                 uiServerSendPluginInfo(plugin);

  971.             }

  972.             break;

  973. 

  974.         case ENGINE_CALLBACK_RELOAD_PARAMETERS:

  975.             plugin = getPlugin(pluginId);

  976. 

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

  978.             {

  979.                 CARLA_SAFE_ASSERT_BREAK(plugin->getId() == pluginId);

  980.                 uiServerSendPluginParameters(plugin);

  981.             }

  982.             break;

  983. 

  984.         case ENGINE_CALLBACK_RELOAD_PROGRAMS:

  985.             plugin = getPlugin(pluginId);

  986. 

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

  988.             {

  989.                 CARLA_SAFE_ASSERT_BREAK(plugin->getId() == pluginId);

  990.                 uiServerSendPluginPrograms(plugin);

  991.             }

  992.             break;

  993. 

  994.         case ENGINE_CALLBACK_RELOAD_ALL:

  995.         case ENGINE_CALLBACK_PLUGIN_ADDED:

  996.             plugin = getPlugin(pluginId);

  997. 

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

  999.             {

  1000.                 CARLA_SAFE_ASSERT_BREAK(plugin->getId() == pluginId);

  1001.                 uiServerSendPluginInfo(plugin);

  1002.                 uiServerSendPluginParameters(plugin);

  1003.                 uiServerSendPluginPrograms(plugin);

  1004.                 uiServerSendPluginProperties(plugin);

  1005.             }

  1006.             break;

  1007. 

  1008.         default:

  1009.             break;

  1010.         }

  1011. 

  1012.         const CarlaMutexLocker cml(fUiServer.getPipeLock());

  1013.         const ScopedLocale csl;

  1014. 

  1015.         std::sprintf(fTmpBuf, "ENGINE_CALLBACK_%i\n", int(action));

  1016.         fUiServer.writeMessage(fTmpBuf);

  1017. 

  1018.         std::sprintf(fTmpBuf, "%u\n", pluginId);

  1019.         fUiServer.writeMessage(fTmpBuf);

  1020. 

  1021.         std::sprintf(fTmpBuf, "%i\n", value1);

  1022.         fUiServer.writeMessage(fTmpBuf);

  1023. 

  1024.         std::sprintf(fTmpBuf, "%i\n", value2);

  1025.         fUiServer.writeMessage(fTmpBuf);

  1026. 

  1027.         std::sprintf(fTmpBuf, "%f\n", value3);

  1028.         fUiServer.writeMessage(fTmpBuf);

  1029. 

  1030.         fUiServer.writeAndFixMessage(valueStr != nullptr ? valueStr : "");

  1031. 

  1032.         fUiServer.flushMessages();

  1033.     }

  1034. 

  1035.     void uiServerInfo()

  1036.     {

  1037.         CARLA_SAFE_ASSERT_RETURN(fIsRunning,);

  1038.         CARLA_SAFE_ASSERT_RETURN(fUiServer.isPipeRunning(),);

  1039. 

  1040.         const CarlaMutexLocker cml(fUiServer.getPipeLock());

  1041. 

  1042. #ifdef HAVE_LIBLO

  1043.         fUiServer.writeAndFixMessage("osc-urls");

  1044.         fUiServer.writeAndFixMessage(pData->osc.getServerPathTCP());

  1045.         fUiServer.writeAndFixMessage(pData->osc.getServerPathUDP());

  1046. #endif

  1047. 

  1048.         fUiServer.writeAndFixMessage("max-plugin-number");

  1049.         std::sprintf(fTmpBuf, "%i\n", pData->maxPluginNumber);

  1050.         fUiServer.writeMessage(fTmpBuf);

  1051. 

  1052.         fUiServer.writeAndFixMessage("buffer-size");

  1053.         std::sprintf(fTmpBuf, "%i\n", pData->bufferSize);

  1054.         fUiServer.writeMessage(fTmpBuf);

  1055. 

  1056.         const ScopedLocale csl;

  1057. 

  1058.         fUiServer.writeAndFixMessage("sample-rate");

  1059.         std::sprintf(fTmpBuf, "%f\n", pData->sampleRate);

  1060.         fUiServer.writeMessage(fTmpBuf);

  1061. 

  1062.         fUiServer.flushMessages();

  1063.     }

  1064. 

  1065.     void uiServerOptions()

  1066.     {

  1067.         CARLA_SAFE_ASSERT_RETURN(fIsRunning,);

  1068.         CARLA_SAFE_ASSERT_RETURN(fUiServer.isPipeRunning(),);

  1069. 

  1070.         const EngineOptions& options(pData->options);

  1071.         const CarlaMutexLocker cml(fUiServer.getPipeLock());

  1072. 

  1073.         const char* const optionsForcedStr(fOptionsForced ? "true\n" : "false\n");

  1074.         const std::size_t optionsForcedStrSize(fOptionsForced ? 5 : 6);

  1075. 

  1076.         std::sprintf(fTmpBuf, "ENGINE_OPTION_%i\n", ENGINE_OPTION_PROCESS_MODE);

  1077.         fUiServer.writeMessage(fTmpBuf);

  1078.         fUiServer.writeMessage(optionsForcedStr, optionsForcedStrSize);

  1079.         std::sprintf(fTmpBuf, "%i\n", options.processMode);

  1080.         fUiServer.writeMessage(fTmpBuf);

  1081.         fUiServer.flushMessages();

  1082. 

  1083.         std::sprintf(fTmpBuf, "ENGINE_OPTION_%i\n", ENGINE_OPTION_TRANSPORT_MODE);

  1084.         fUiServer.writeMessage(fTmpBuf);

  1085.         fUiServer.writeMessage(optionsForcedStr, optionsForcedStrSize);

  1086.         std::sprintf(fTmpBuf, "%i\n", options.transportMode);

  1087.         fUiServer.writeMessage(fTmpBuf);

  1088.         fUiServer.flushMessages();

  1089. 

  1090.         std::sprintf(fTmpBuf, "ENGINE_OPTION_%i\n", ENGINE_OPTION_FORCE_STEREO);

  1091.         fUiServer.writeMessage(fTmpBuf);

  1092.         fUiServer.writeMessage(optionsForcedStr, optionsForcedStrSize);

  1093.         fUiServer.writeMessage(options.forceStereo ? "true\n" : "false\n");

  1094.         fUiServer.flushMessages();

  1095. 

  1096.         std::sprintf(fTmpBuf, "ENGINE_OPTION_%i\n", ENGINE_OPTION_PREFER_PLUGIN_BRIDGES);

  1097.         fUiServer.writeMessage(fTmpBuf);

  1098.         fUiServer.writeMessage(optionsForcedStr, optionsForcedStrSize);

  1099.         fUiServer.writeMessage(options.preferPluginBridges ? "true\n" : "false\n");

  1100.         fUiServer.flushMessages();

  1101. 

  1102.         std::sprintf(fTmpBuf, "ENGINE_OPTION_%i\n", ENGINE_OPTION_PREFER_UI_BRIDGES);

  1103.         fUiServer.writeMessage(fTmpBuf);

  1104.         fUiServer.writeMessage(optionsForcedStr, optionsForcedStrSize);

  1105.         fUiServer.writeMessage(options.preferUiBridges ? "true\n" : "false\n");

  1106.         fUiServer.flushMessages();

  1107. 

  1108.         std::sprintf(fTmpBuf, "ENGINE_OPTION_%i\n", ENGINE_OPTION_UIS_ALWAYS_ON_TOP);

  1109.         fUiServer.writeMessage(fTmpBuf);

  1110.         fUiServer.writeMessage(optionsForcedStr, optionsForcedStrSize);

  1111.         fUiServer.writeMessage(options.uisAlwaysOnTop ? "true\n" : "false\n");

  1112.         fUiServer.flushMessages();

  1113. 

  1114.         std::sprintf(fTmpBuf, "ENGINE_OPTION_%i\n", ENGINE_OPTION_MAX_PARAMETERS);

  1115.         fUiServer.writeMessage(fTmpBuf);

  1116.         fUiServer.writeMessage(optionsForcedStr, optionsForcedStrSize);

  1117.         std::sprintf(fTmpBuf, "%i\n", options.maxParameters);

  1118.         fUiServer.writeMessage(fTmpBuf);

  1119.         fUiServer.flushMessages();

  1120. 

  1121.         std::sprintf(fTmpBuf, "ENGINE_OPTION_%i\n", ENGINE_OPTION_UI_BRIDGES_TIMEOUT);

  1122.         fUiServer.writeMessage(fTmpBuf);

  1123.         fUiServer.writeMessage(optionsForcedStr, optionsForcedStrSize);

  1124.         std::sprintf(fTmpBuf, "%i\n", options.uiBridgesTimeout);

  1125.         fUiServer.writeMessage(fTmpBuf);

  1126.         fUiServer.flushMessages();

  1127. 

  1128.         std::sprintf(fTmpBuf, "ENGINE_OPTION_%i\n", ENGINE_OPTION_PATH_BINARIES);

  1129.         fUiServer.writeMessage(fTmpBuf);

  1130.         fUiServer.writeMessage("true\n", 5);

  1131.         std::sprintf(fTmpBuf, "%s\n", options.binaryDir);

  1132.         fUiServer.writeMessage(fTmpBuf);

  1133.         fUiServer.flushMessages();

  1134. 

  1135.         std::sprintf(fTmpBuf, "ENGINE_OPTION_%i\n", ENGINE_OPTION_PATH_RESOURCES);

  1136.         fUiServer.writeMessage(fTmpBuf);

  1137.         fUiServer.writeMessage("true\n", 5);

  1138.         std::sprintf(fTmpBuf, "%s\n", options.resourceDir);

  1139.         fUiServer.writeMessage(fTmpBuf);

  1140.         fUiServer.flushMessages();

  1141.     }

  1142. 

  1143.     // -------------------------------------------------------------------

  1144.     // Plugin parameter calls

  1145. 

  1146.     uint32_t getParameterCount() const

  1147.     {

  1148.         if (CarlaPlugin* const plugin = _getFirstPlugin())

  1149.             return plugin->getParameterCount();

  1150. 

  1151.         return 0;

  1152.     }

  1153. 

  1154.     const NativeParameter* getParameterInfo(const uint32_t index) const

  1155.     {

  1156.         if (CarlaPlugin* const plugin = _getFirstPlugin())

  1157.         {

  1158.             if (index < plugin->getParameterCount())

  1159.             {

  1160.                 static NativeParameter param;

  1161.                 static char strBufName[STR_MAX+1];

  1162.                 static char strBufUnit[STR_MAX+1];

  1163. 

  1164.                 const ParameterData& paramData(plugin->getParameterData(index));

  1165.                 const ParameterRanges& paramRanges(plugin->getParameterRanges(index));

  1166. 

  1167.                 plugin->getParameterName(index, strBufName);

  1168.                 plugin->getParameterUnit(index, strBufUnit);

  1169. 

  1170.                 uint hints = 0x0;

  1171. 

  1172.                 if (paramData.hints & PARAMETER_IS_BOOLEAN)

  1173.                     hints |= NATIVE_PARAMETER_IS_BOOLEAN;

  1174.                 if (paramData.hints & PARAMETER_IS_INTEGER)

  1175.                     hints |= NATIVE_PARAMETER_IS_INTEGER;

  1176.                 if (paramData.hints & PARAMETER_IS_LOGARITHMIC)

  1177.                     hints |= NATIVE_PARAMETER_IS_LOGARITHMIC;

  1178.                 if (paramData.hints & PARAMETER_IS_AUTOMABLE)

  1179.                     hints |= NATIVE_PARAMETER_IS_AUTOMABLE;

  1180.                 if (paramData.hints & PARAMETER_USES_SAMPLERATE)

  1181.                     hints |= NATIVE_PARAMETER_USES_SAMPLE_RATE;

  1182.                 if (paramData.hints & PARAMETER_USES_SCALEPOINTS)

  1183.                     hints |= NATIVE_PARAMETER_USES_SCALEPOINTS;

  1184. 

  1185.                 if (paramData.type == PARAMETER_INPUT || paramData.type == PARAMETER_OUTPUT)

  1186.                 {

  1187.                     if (paramData.hints & PARAMETER_IS_ENABLED)

  1188.                         hints |= NATIVE_PARAMETER_IS_ENABLED;

  1189.                     if (paramData.type == PARAMETER_OUTPUT)

  1190.                         hints |= NATIVE_PARAMETER_IS_OUTPUT;

  1191.                 }

  1192. 

  1193.                 param.hints = static_cast<NativeParameterHints>(hints);

  1194.                 param.name  = strBufName;

  1195.                 param.unit  = strBufUnit;

  1196.                 param.ranges.def = paramRanges.def;

  1197.                 param.ranges.min = paramRanges.min;

  1198.                 param.ranges.max = paramRanges.max;

  1199.                 param.ranges.step = paramRanges.step;

  1200.                 param.ranges.stepSmall = paramRanges.stepSmall;

  1201.                 param.ranges.stepLarge = paramRanges.stepLarge;

  1202.                 param.scalePointCount = 0; // TODO

  1203.                 param.scalePoints = nullptr;

  1204. 

  1205.                 return &param;

  1206.             }

  1207.         }

  1208. 

  1209.         return nullptr;

  1210.     }

  1211. 

  1212.     float getParameterValue(const uint32_t index) const

  1213.     {

  1214.         if (CarlaPlugin* const plugin = _getFirstPlugin())

  1215.         {

  1216.             if (index < plugin->getParameterCount())

  1217.                 return plugin->getParameterValue(index);

  1218.         }

  1219. 

  1220.         return 0.0f;

  1221.     }

  1222. 

  1223.     // -------------------------------------------------------------------

  1224.     // Plugin midi-program calls

  1225. 

  1226.     uint32_t getMidiProgramCount() const

  1227.     {

  1228.         if (CarlaPlugin* const plugin = _getFirstPlugin())

  1229.             return plugin->getMidiProgramCount();

  1230. 

  1231.         return 0;

  1232.     }

  1233. 

  1234.     const NativeMidiProgram* getMidiProgramInfo(const uint32_t index) const

  1235.     {

  1236.         if (CarlaPlugin* const plugin = _getFirstPlugin())

  1237.         {

  1238.             if (index < plugin->getMidiProgramCount())

  1239.             {

  1240.                 static NativeMidiProgram midiProg;

  1241. 

  1242.                 {

  1243.                     const MidiProgramData& midiProgData(plugin->getMidiProgramData(index));

  1244. 

  1245.                     midiProg.bank    = midiProgData.bank;

  1246.                     midiProg.program = midiProgData.program;

  1247.                     midiProg.name    = midiProgData.name;

  1248.                 }

  1249. 

  1250.                 return &midiProg;

  1251.             }

  1252.         }

  1253. 

  1254.         return nullptr;

  1255.     }

  1256. 

  1257.     // -------------------------------------------------------------------

  1258.     // Plugin state calls

  1259. 

  1260.     void setParameterValue(const uint32_t index, const float value)

  1261.     {

  1262.         if (CarlaPlugin* const plugin = _getFirstPlugin())

  1263.         {

  1264.             if (index < plugin->getParameterCount())

  1265.                 plugin->setParameterValue(index, value, false, false, false);

  1266.         }

  1267.     }

  1268. 

  1269.     void setMidiProgram(const uint8_t, const uint32_t bank, const uint32_t program)

  1270.     {

  1271.         if (CarlaPlugin* const plugin = _getFirstPlugin())

  1272.             plugin->setMidiProgramById(bank, program, false, false, false);

  1273.     }

  1274. 

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

  1276.     // Plugin process calls

  1277. 

  1278.     void activate()

  1279.     {

  1280. #if 0

  1281.         for (uint i=0; i < pData->curPluginCount; ++i)

  1282.         {

  1283.             CarlaPlugin* const plugin(pData->plugins[i].plugin);

  1284. 

  1285.             if (plugin == nullptr || ! plugin->isEnabled())

  1286.                 continue;

  1287. 

  1288.             plugin->setActive(true, true, false);

  1289.         }

  1290. #endif

  1291.         fIsActive = true;

  1292.     }

  1293. 

  1294.     void deactivate()

  1295.     {

  1296.         fIsActive = false;

  1297. #if 0

  1298.         for (uint i=0; i < pData->curPluginCount; ++i)

  1299.         {

  1300.             CarlaPlugin* const plugin(pData->plugins[i].plugin);

  1301. 

  1302.             if (plugin == nullptr || ! plugin->isEnabled())

  1303.                 continue;

  1304. 

  1305.             plugin->setActive(false, true, false);

  1306.         }

  1307. #endif

  1308. 

  1309.         // just in case

  1310.         //runPendingRtEvents();

  1311.     }

  1312. 

  1313.     void process(float** const inBuffer, float** const outBuffer, const uint32_t frames,

  1314.                  const NativeMidiEvent* const midiEvents, const uint32_t midiEventCount)

  1315.     {

  1316.         const PendingRtEventsRunner prt(this, frames);

  1317. 

  1318.         // ---------------------------------------------------------------

  1319.         // Time Info

  1320. 

  1321.         const NativeTimeInfo* const timeInfo(pHost->get_time_info(pHost->handle));

  1322. 

  1323.         pData->timeInfo.playing = timeInfo->playing;

  1324.         pData->timeInfo.frame   = timeInfo->frame;

  1325.         pData->timeInfo.usecs   = timeInfo->usecs;

  1326.         pData->timeInfo.valid   = 0x0;

  1327. 

  1328.         if (timeInfo->bbt.valid)

  1329.         {

  1330.             pData->timeInfo.valid |= EngineTimeInfo::kValidBBT;

  1331. 

  1332.             pData->timeInfo.bbt.bar = timeInfo->bbt.bar;

  1333.             pData->timeInfo.bbt.beat = timeInfo->bbt.beat;

  1334.             pData->timeInfo.bbt.tick = timeInfo->bbt.tick;

  1335.             pData->timeInfo.bbt.barStartTick = timeInfo->bbt.barStartTick;

  1336. 

  1337.             pData->timeInfo.bbt.beatsPerBar = timeInfo->bbt.beatsPerBar;

  1338.             pData->timeInfo.bbt.beatType = timeInfo->bbt.beatType;

  1339. 

  1340.             pData->timeInfo.bbt.ticksPerBeat = timeInfo->bbt.ticksPerBeat;

  1341.             pData->timeInfo.bbt.beatsPerMinute = timeInfo->bbt.beatsPerMinute;

  1342.         }

  1343. 

  1344.         // ---------------------------------------------------------------

  1345.         // Do nothing if no plugins and rack mode

  1346. 

  1347.         if (pData->curPluginCount == 0)

  1348.         {

  1349.             if (outBuffer[0] != inBuffer[0])

  1350.                 FloatVectorOperations::copy(outBuffer[0], inBuffer[0], static_cast<int>(frames));

  1351. 

  1352.             if (outBuffer[1] != inBuffer[1])

  1353.                 FloatVectorOperations::copy(outBuffer[1], inBuffer[1], static_cast<int>(frames));

  1354. 

  1355.             for (uint32_t i=0; i < midiEventCount; ++i)

  1356.             {

  1357.                 if (! pHost->write_midi_event(pHost->handle, &midiEvents[i]))

  1358.                     break;

  1359.             }

  1360.             return;

  1361.         }

  1362. 

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

  1364.         // initialize events

  1365. 

  1366.         carla_zeroStructs(pData->events.in,  kMaxEngineEventInternalCount);

  1367.         carla_zeroStructs(pData->events.out, kMaxEngineEventInternalCount);

  1368. 

  1369.         // ---------------------------------------------------------------

  1370.         // events input (before processing)

  1371. 

  1372.         {

  1373.             uint32_t engineEventIndex = 0;

  1374. 

  1375.             for (uint32_t i=0; i < midiEventCount && engineEventIndex < kMaxEngineEventInternalCount; ++i)

  1376.             {

  1377.                 const NativeMidiEvent& midiEvent(midiEvents[i]);

  1378.                 EngineEvent&           engineEvent(pData->events.in[engineEventIndex++]);

  1379. 

  1380.                 engineEvent.time = midiEvent.time;

  1381.                 engineEvent.fillFromMidiData(midiEvent.size, midiEvent.data, 0);

  1382. 

  1383.                 if (engineEventIndex >= kMaxEngineEventInternalCount)

  1384.                     break;

  1385.             }

  1386.         }

  1387. 

  1388.         {

  1389.             // -----------------------------------------------------------

  1390.             // create audio buffers

  1391. 

  1392.             const float* inBuf[2]  = {  inBuffer[0],  inBuffer[1] };

  1393.             /* */ float* outBuf[2] = { outBuffer[0], outBuffer[1] };

  1394. 

  1395.             // -----------------------------------------------------------

  1396.             // process

  1397. 

  1398.             pData->graph.processRack(pData, inBuf, outBuf, frames);

  1399.         }

  1400. 

  1401.         // ---------------------------------------------------------------

  1402.         // events output (after processing)

  1403. 

  1404.         carla_zeroStructs(pData->events.in, kMaxEngineEventInternalCount);

  1405. 

  1406.         {

  1407.             NativeMidiEvent midiEvent;

  1408. 

  1409.             for (uint32_t i=0; i < kMaxEngineEventInternalCount; ++i)

  1410.             {

  1411.                 const EngineEvent& engineEvent(pData->events.out[i]);

  1412. 

  1413.                 if (engineEvent.type == kEngineEventTypeNull)

  1414.                     break;

  1415. 

  1416.                 midiEvent.time = engineEvent.time;

  1417. 

  1418.                 if (engineEvent.type == CarlaBackend::kEngineEventTypeControl)

  1419.                 {

  1420.                     midiEvent.port = 0;

  1421.                     engineEvent.ctrl.convertToMidiData(engineEvent.channel, midiEvent.size, midiEvent.data);

  1422.                 }

  1423.                 else if (engineEvent.type == kEngineEventTypeMidi)

  1424.                 {

  1425.                     if (engineEvent.midi.size > 4 || engineEvent.midi.dataExt != nullptr)

  1426.                         continue;

  1427. 

  1428.                     midiEvent.port = engineEvent.midi.port;

  1429.                     midiEvent.size = engineEvent.midi.size;

  1430. 

  1431.                     midiEvent.data[0] = static_cast<uint8_t>(engineEvent.midi.data[0] + engineEvent.channel);

  1432. 

  1433.                     for (uint8_t j=1; j < midiEvent.size; ++j)

  1434.                         midiEvent.data[j] = engineEvent.midi.data[j];

  1435.                 }

  1436.                 else

  1437.                 {

  1438.                     carla_stderr("Unknown event type...");

  1439.                     continue;

  1440.                 }

  1441. 

  1442.                 pHost->write_midi_event(pHost->handle, &midiEvent);

  1443.             }

  1444.         }

  1445.     }

  1446. 

  1447.     // -------------------------------------------------------------------

  1448.     // Plugin UI calls

  1449. 

  1450.     void uiShow(const bool show)

  1451.     {

  1452.         if (show)

  1453.         {

  1454.             if (fUiServer.isPipeRunning())

  1455.             {

  1456.                 fUiServer.writeFocusMessage();

  1457.                 return;

  1458.             }

  1459. 

  1460.             CarlaString path(pHost->resourceDir);

  1461. 

  1462.             path += CARLA_OS_SEP_STR "carla-plugin";

  1463. #ifdef CARLA_OS_WIN

  1464.             path += ".exe";

  1465. #endif

  1466.             carla_stdout("Trying to start carla-plugin using \"%s\"", path.buffer());

  1467. 

  1468.             fUiServer.setData(path, pData->sampleRate, pHost->uiName);

  1469. 

  1470.             if (! fUiServer.startPipeServer(false))

  1471.             {

  1472.                 pHost->dispatcher(pHost->handle, NATIVE_HOST_OPCODE_UI_UNAVAILABLE, 0, 0, nullptr, 0.0f);

  1473.                 return;

  1474.             }

  1475. 

  1476.             uiServerInfo();

  1477.             uiServerOptions();

  1478.             uiServerCallback(ENGINE_CALLBACK_ENGINE_STARTED, 0, pData->options.processMode, pData->options.transportMode, 0.0f, "Plugin");

  1479. 

  1480.             fUiServer.writeShowMessage();

  1481. 

  1482.             for (uint i=0; i < pData->curPluginCount; ++i)

  1483.             {

  1484.                 CarlaPlugin* const plugin(pData->plugins[i].plugin);

  1485. 

  1486.                 if (plugin != nullptr && plugin->isEnabled())

  1487.                 {

  1488.                     uiServerCallback(ENGINE_CALLBACK_PLUGIN_ADDED, i, 0, 0, 0.0f, plugin->getName());

  1489.                 }

  1490.             }

  1491. 

  1492.             if (fWaitForReadyMsg)

  1493.             {

  1494.                 carla_stdout("Using Carla plugin embedded, waiting for it to be ready...");

  1495. 

  1496.                 for (; fUiServer.isPipeRunning() && ! fUiServer.isReady();)

  1497.                 {

  1498.                     carla_msleep(25);

  1499.                     fUiServer.idlePipe();

  1500.                 }

  1501. 

  1502.                 carla_stdout("Done!");

  1503.             }

  1504.         }

  1505.         else

  1506.         {

  1507.             fUiServer.stopPipeServer(2000);

  1508. 

  1509.             // hide all custom uis

  1510.             for (uint i=0; i < pData->curPluginCount; ++i)

  1511.             {

  1512.                 CarlaPlugin* const plugin(pData->plugins[i].plugin);

  1513. 

  1514.                 if (plugin != nullptr && plugin->isEnabled())

  1515.                 {

  1516.                     if (plugin->getHints() & PLUGIN_HAS_CUSTOM_UI)

  1517.                     {

  1518.                         try {

  1519.                             plugin->showCustomUI(false);

  1520.                         } CARLA_SAFE_EXCEPTION_CONTINUE("Plugin showCustomUI (hide)");

  1521.                     }

  1522.                 }

  1523.             }

  1524.         }

  1525.     }

  1526. 

  1527.     void uiIdle()

  1528.     {

  1529.         for (uint i=0; i < pData->curPluginCount; ++i)

  1530.         {

  1531.             CarlaPlugin* const plugin(pData->plugins[i].plugin);

  1532. 

  1533.             if (plugin != nullptr && plugin->isEnabled())

  1534.             {

  1535.                 const uint hints(plugin->getHints());

  1536. 

  1537.                 if ((hints & PLUGIN_HAS_CUSTOM_UI) != 0 && (hints & PLUGIN_NEEDS_UI_MAIN_THREAD) != 0)

  1538.                 {

  1539.                     try {

  1540.                         plugin->uiIdle();

  1541.                     } CARLA_SAFE_EXCEPTION_CONTINUE("Plugin uiIdle");

  1542.                 }

  1543.             }

  1544.         }

  1545. 

  1546.         if (fUiServer.isPipeRunning())

  1547.         {

  1548.             fUiServer.idlePipe();

  1549. 

  1550.             const CarlaMutexLocker cml(fUiServer.getPipeLock());

  1551. #ifndef CARLA_OS_WIN

  1552.             const EngineTimeInfo& timeInfo(pData->timeInfo);

  1553.             const ScopedLocale csl;

  1554. 

  1555.             // send transport

  1556.             fUiServer.writeAndFixMessage("transport");

  1557.             fUiServer.writeMessage(timeInfo.playing ? "true\n" : "false\n");

  1558. 

  1559.             if (timeInfo.valid & EngineTimeInfo::kValidBBT)

  1560.             {

  1561.                 std::sprintf(fTmpBuf, P_UINT64 ":%i:%i:%i\n", timeInfo.frame, timeInfo.bbt.bar, timeInfo.bbt.beat, timeInfo.bbt.tick);

  1562.                 fUiServer.writeMessage(fTmpBuf);

  1563.                 std::sprintf(fTmpBuf, "%f\n", timeInfo.bbt.beatsPerMinute);

  1564.                 fUiServer.writeMessage(fTmpBuf);

  1565.             }

  1566.             else

  1567.             {

  1568.                 std::sprintf(fTmpBuf, P_UINT64 ":0:0:0\n", timeInfo.frame);

  1569.                 fUiServer.writeMessage(fTmpBuf);

  1570.                 fUiServer.writeMessage("0.0\n");

  1571.             }

  1572. 

  1573.             fUiServer.flushMessages();

  1574. #endif

  1575. 

  1576.             // send peaks and param outputs for all plugins

  1577.             for (uint i=0; i < pData->curPluginCount; ++i)

  1578.             {

  1579.                 const EnginePluginData& plugData(pData->plugins[i]);

  1580.                 const CarlaPlugin* const plugin(pData->plugins[i].plugin);

  1581. 

  1582.                 std::sprintf(fTmpBuf, "PEAKS_%i\n", i);

  1583.                 fUiServer.writeMessage(fTmpBuf);

  1584. 

  1585.                 std::sprintf(fTmpBuf, "%f:%f:%f:%f\n", plugData.insPeak[0], plugData.insPeak[1], plugData.outsPeak[0], plugData.outsPeak[1]);

  1586.                 fUiServer.writeMessage(fTmpBuf);

  1587.                 fUiServer.flushMessages();

  1588. 

  1589.                 for (uint32_t j=0, count=plugin->getParameterCount(); j < count; ++j)

  1590.                 {

  1591.                     if (! plugin->isParameterOutput(j))

  1592.                         continue;

  1593. 

  1594.                     std::sprintf(fTmpBuf, "PARAMVAL_%i:%i\n", i, j);

  1595.                     fUiServer.writeMessage(fTmpBuf);

  1596.                     std::sprintf(fTmpBuf, "%f\n", plugin->getParameterValue(j));

  1597.                     fUiServer.writeMessage(fTmpBuf);

  1598.                     fUiServer.flushMessages();

  1599.                 }

  1600.             }

  1601.         }

  1602. 

  1603.         switch (fUiServer.getAndResetUiState())

  1604.         {

  1605.         case CarlaExternalUI::UiNone:

  1606.         case CarlaExternalUI::UiShow:

  1607.             break;

  1608.         case CarlaExternalUI::UiCrashed:

  1609.             pHost->dispatcher(pHost->handle, NATIVE_HOST_OPCODE_UI_UNAVAILABLE, 0, 0, nullptr, 0.0f);

  1610.             break;

  1611.         case CarlaExternalUI::UiHide:

  1612.             pHost->ui_closed(pHost->handle);

  1613.             fUiServer.stopPipeServer(1000);

  1614.             break;

  1615.         }

  1616.     }

  1617. 

  1618.     // -------------------------------------------------------------------

  1619.     // Plugin state calls

  1620. 

  1621.     char* getState() const

  1622.     {

  1623.         MemoryOutputStream out;

  1624.         saveProjectInternal(out);

  1625.         return strdup(out.toString().toRawUTF8());

  1626.     }

  1627. 

  1628.     void setState(const char* const data)

  1629.     {

  1630.         // remove all plugins from UI side

  1631.         for (uint i=0, count=pData->curPluginCount; i < count; ++i)

  1632.             CarlaEngine::callback(ENGINE_CALLBACK_PLUGIN_REMOVED, count-i-1, 0, 0, 0.0f, nullptr);

  1633. 

  1634.         // remove all plugins from backend, no lock

  1635.         fIsRunning = false;

  1636.         removeAllPlugins();

  1637.         fIsRunning = true;

  1638. 

  1639.         // stopped during removeAllPlugins()

  1640.         if (! pData->thread.isThreadRunning())

  1641.             pData->thread.startThread();

  1642. 

  1643.         fOptionsForced = true;

  1644.         const String state(data);

  1645.         XmlDocument xml(state);

  1646.         loadProjectInternal(xml);

  1647.     }

  1648. 

  1649.     // -------------------------------------------------------------------

  1650. 

  1651. public:

  1652.     #define handlePtr ((CarlaEngineNative*)handle)

  1653. 

  1654.     static NativePluginHandle _instantiateRack(const NativeHostDescriptor* host)

  1655.     {

  1656.         return new CarlaEngineNative(host, false);

  1657.     }

  1658. 

  1659.     static void _cleanup(NativePluginHandle handle)

  1660.     {

  1661.         delete handlePtr;

  1662.     }

  1663. 

  1664.     static uint32_t _get_parameter_count(NativePluginHandle handle)

  1665.     {

  1666.         return handlePtr->getParameterCount();

  1667.     }

  1668. 

  1669.     static const NativeParameter* _get_parameter_info(NativePluginHandle handle, uint32_t index)

  1670.     {

  1671.         return handlePtr->getParameterInfo(index);

  1672.     }

  1673. 

  1674.     static float _get_parameter_value(NativePluginHandle handle, uint32_t index)

  1675.     {

  1676.         return handlePtr->getParameterValue(index);

  1677.     }

  1678. 

  1679.     static uint32_t _get_midi_program_count(NativePluginHandle handle)

  1680.     {

  1681.         return handlePtr->getMidiProgramCount();

  1682.     }

  1683. 

  1684.     static const NativeMidiProgram* _get_midi_program_info(NativePluginHandle handle, uint32_t index)

  1685.     {

  1686.         return handlePtr->getMidiProgramInfo(index);

  1687.     }

  1688. 

  1689.     static void _set_parameter_value(NativePluginHandle handle, uint32_t index, float value)

  1690.     {

  1691.         handlePtr->setParameterValue(index, value);

  1692.     }

  1693. 

  1694.     static void _set_midi_program(NativePluginHandle handle, uint8_t channel, uint32_t bank, uint32_t program)

  1695.     {

  1696.         handlePtr->setMidiProgram(channel, bank, program);

  1697.     }

  1698. 

  1699.     static void _ui_show(NativePluginHandle handle, bool show)

  1700.     {

  1701.         handlePtr->uiShow(show);

  1702.     }

  1703. 

  1704.     static void _ui_idle(NativePluginHandle handle)

  1705.     {

  1706.         handlePtr->uiIdle();

  1707.     }

  1708. 

  1709.     static void _activate(NativePluginHandle handle)

  1710.     {

  1711.         handlePtr->activate();

  1712.     }

  1713. 

  1714.     static void _deactivate(NativePluginHandle handle)

  1715.     {

  1716.         handlePtr->deactivate();

  1717.     }

  1718. 

  1719.     static void _process(NativePluginHandle handle, float** inBuffer, float** outBuffer, const uint32_t frames, const NativeMidiEvent* midiEvents, uint32_t midiEventCount)

  1720.     {

  1721.         handlePtr->process(inBuffer, outBuffer, frames, midiEvents, midiEventCount);

  1722.     }

  1723. 

  1724.     static char* _get_state(NativePluginHandle handle)

  1725.     {

  1726.         return handlePtr->getState();

  1727.     }

  1728. 

  1729.     static void _set_state(NativePluginHandle handle, const char* data)

  1730.     {

  1731.         handlePtr->setState(data);

  1732.     }

  1733. 

  1734.     static intptr_t _dispatcher(NativePluginHandle handle, NativePluginDispatcherOpcode opcode, int32_t index, intptr_t value, void* ptr, float opt)

  1735.     {

  1736.         switch(opcode)

  1737.         {

  1738.         case NATIVE_PLUGIN_OPCODE_NULL:

  1739.             if (static_cast<uint32_t>(index) == 0xDEADF00D && static_cast<uintptr_t>(value) == 0xC0C0B00B)

  1740.             {

  1741.                 handlePtr->fWaitForReadyMsg = true;

  1742.                 return handlePtr->fUiServer.getRemoteWinId();

  1743.             }

  1744.             return 0;

  1745.         case NATIVE_PLUGIN_OPCODE_BUFFER_SIZE_CHANGED:

  1746.             CARLA_SAFE_ASSERT_RETURN(value > 0, 0);

  1747.             handlePtr->bufferSizeChanged(static_cast<uint32_t>(value));

  1748.             return 0;

  1749.         case NATIVE_PLUGIN_OPCODE_SAMPLE_RATE_CHANGED:

  1750.             CARLA_SAFE_ASSERT_RETURN(opt > 0.0, 0);

  1751.             handlePtr->sampleRateChanged(static_cast<double>(opt));

  1752.             return 0;

  1753.         case NATIVE_PLUGIN_OPCODE_OFFLINE_CHANGED:

  1754.             handlePtr->offlineModeChanged(value != 0);

  1755.             return 0;

  1756.         case NATIVE_PLUGIN_OPCODE_UI_NAME_CHANGED:

  1757.             //handlePtr->uiNameChanged(static_cast<const char*>(ptr));

  1758.             return 0;

  1759.         }

  1760. 

  1761.         return 0;

  1762. 

  1763.         // unused

  1764.         (void)index;

  1765.         (void)ptr;

  1766.     }

  1767. 

  1768.     // -------------------------------------------------------------------

  1769. 

  1770.     static void _ui_server_callback(void* handle, EngineCallbackOpcode action, uint pluginId, int value1, int value2, float value3, const char* valueStr)

  1771.     {

  1772.         handlePtr->uiServerCallback(action, pluginId, value1, value2, value3, valueStr);

  1773.     }

  1774. 

  1775.     // -------------------------------------------------------------------

  1776. 

  1777.     #undef handlePtr

  1778. 

  1779. private:

  1780.     const NativeHostDescriptor* const pHost;

  1781. 

  1782.     bool fIsActive, fIsRunning;

  1783.     CarlaEngineNativeUI fUiServer;

  1784. 

  1785.     bool fOptionsForced;

  1786.     bool fWaitForReadyMsg;

  1787.     char fTmpBuf[STR_MAX+1];

  1788. 

  1789.     CarlaPlugin* _getFirstPlugin() const noexcept

  1790.     {

  1791.         if (pData->curPluginCount == 0 || pData->plugins == nullptr)

  1792.             return nullptr;

  1793. 

  1794.         CarlaPlugin* const plugin(pData->plugins[0].plugin);

  1795. 

  1796.         if (plugin == nullptr || ! plugin->isEnabled())

  1797.             return nullptr;

  1798. 

  1799.         return pData->plugins[0].plugin;

  1800.     }

  1801. 

  1802.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CarlaEngineNative)

  1803. };

  1804. 

  1805. // -----------------------------------------------------------------------

  1806. 

  1807. static const NativePluginDescriptor carlaRackDesc = {

  1808.     /* category  */ NATIVE_PLUGIN_CATEGORY_OTHER,

  1809.     /* hints     */ static_cast<NativePluginHints>(NATIVE_PLUGIN_IS_SYNTH

  1810.                                                   |NATIVE_PLUGIN_HAS_UI

  1811.                                                   //|NATIVE_PLUGIN_NEEDS_FIXED_BUFFERS

  1812.                                                   |NATIVE_PLUGIN_NEEDS_UI_MAIN_THREAD

  1813.                                                   |NATIVE_PLUGIN_USES_STATE

  1814.                                                   |NATIVE_PLUGIN_USES_TIME),

  1815.     /* supports  */ static_cast<NativePluginSupports>(NATIVE_PLUGIN_SUPPORTS_EVERYTHING),

  1816.     /* audioIns  */ 2,

  1817.     /* audioOuts */ 2,

  1818.     /* midiIns   */ 1,

  1819.     /* midiOuts  */ 1,

  1820.     /* paramIns  */ 0,

  1821.     /* paramOuts */ 0,

  1822.     /* name      */ "Carla-Rack",

  1823.     /* label     */ "carlarack",

  1824.     /* maker     */ "falkTX",

  1825.     /* copyright */ "GNU GPL v2+",

  1826.     CarlaEngineNative::_instantiateRack,

  1827.     CarlaEngineNative::_cleanup,

  1828.     CarlaEngineNative::_get_parameter_count,

  1829.     CarlaEngineNative::_get_parameter_info,

  1830.     CarlaEngineNative::_get_parameter_value,

  1831.     CarlaEngineNative::_get_midi_program_count,

  1832.     CarlaEngineNative::_get_midi_program_info,

  1833.     CarlaEngineNative::_set_parameter_value,

  1834.     CarlaEngineNative::_set_midi_program,

  1835.     /* _set_custom_data        */ nullptr,

  1836.     CarlaEngineNative::_ui_show,

  1837.     CarlaEngineNative::_ui_idle,

  1838.     /* _ui_set_parameter_value */ nullptr,

  1839.     /* _ui_set_midi_program    */ nullptr,

  1840.     /* _ui_set_custom_data     */ nullptr,

  1841.     CarlaEngineNative::_activate,

  1842.     CarlaEngineNative::_deactivate,

  1843.     CarlaEngineNative::_process,

  1844.     CarlaEngineNative::_get_state,

  1845.     CarlaEngineNative::_set_state,

  1846.     CarlaEngineNative::_dispatcher

  1847. };

  1848. 

  1849. CARLA_BACKEND_END_NAMESPACE

  1850. 

  1851. // -----------------------------------------------------------------------

  1852. 

  1853. CARLA_EXPORT

  1854. void carla_register_native_plugin_carla();

  1855. 

  1856. void carla_register_native_plugin_carla()

  1857. {

  1858.     CARLA_BACKEND_USE_NAMESPACE;

  1859.     carla_register_native_plugin(&carlaRackDesc);

  1860. }

  1861. 

  1862. // -----------------------------------------------------------------------

  1863. 

  1864. CARLA_EXPORT

  1865. const NativePluginDescriptor* carla_get_native_rack_plugin();

  1866. const NativePluginDescriptor* carla_get_native_rack_plugin()

  1867. {

  1868.     CARLA_BACKEND_USE_NAMESPACE;

  1869.     return &carlaRackDesc;

  1870. }

  1871. 

  1872. // -----------------------------------------------------------------------

  1873. // Extra stuff for linking purposes

  1874. 

  1875. #ifdef CARLA_PLUGIN_EXPORT

  1876. 

  1877. CARLA_BACKEND_START_NAMESPACE

  1878. 

  1879. CarlaEngine* CarlaEngine::newJack() { return nullptr; }

  1880. 

  1881. CarlaEngine*       CarlaEngine::newRtAudio(const AudioApi)           { return nullptr; }

  1882. uint               CarlaEngine::getRtAudioApiCount()                 { return 0;       }

  1883. const char*        CarlaEngine::getRtAudioApiName(const uint)        { return nullptr; }

  1884. const char* const* CarlaEngine::getRtAudioApiDeviceNames(const uint) { return nullptr; }

  1885. const EngineDriverDeviceInfo* CarlaEngine::getRtAudioDeviceInfo(const uint, const char* const) { return nullptr; }

  1886. 

  1887. CARLA_BACKEND_END_NAMESPACE

  1888. 

  1889. #include "CarlaHostCommon.cpp"

  1890. #include "CarlaPluginUI.cpp"

  1891. #include "CarlaDssiUtils.cpp"

  1892. #include "CarlaPatchbayUtils.cpp"

  1893. #include "CarlaPipeUtils.cpp"

  1894. #include "CarlaStateUtils.cpp"

  1895. 

  1896. #endif

  1897. 

  1898. // -----------------------------------------------------------------------