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

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  1. /*

  2.  * Carla Plugin Host

  3.  * Copyright (C) 2011-2019 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. #ifndef BUILD_BRIDGE

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

  20. #endif

  21. 

  22. #include "CarlaEngineInternal.hpp"

  23. #include "CarlaPlugin.hpp"

  24. 

  25. #include "CarlaBackendUtils.hpp"

  26. #include "CarlaBase64Utils.hpp"

  27. #include "CarlaBridgeUtils.hpp"

  28. #include "CarlaMIDI.h"

  29. 

  30. #ifdef __SSE2_MATH__

  31. # include <xmmintrin.h>

  32. #endif

  33. 

  34. #include "water/files/File.h"

  35. #include "water/misc/Time.h"

  36. 

  37. // must be last

  38. #include "jackbridge/JackBridge.hpp"

  39. 

  40. using water::File;

  41. using water::MemoryBlock;

  42. using water::String;

  43. using water::Time;

  44. 

  45. CARLA_BACKEND_START_NAMESPACE

  46. 

  47. // -----------------------------------------------------------------------

  48. // Bridge Engine client

  49. 

  50. struct LatencyChangedCallback {

  51.     virtual ~LatencyChangedCallback() noexcept {}

  52.     virtual void latencyChanged(const uint32_t samples) noexcept = 0;

  53. };

  54. 

  55. class CarlaEngineBridgeClient : public CarlaEngineClient

  56. {

  57. public:

  58.     CarlaEngineBridgeClient(const CarlaEngine& engine, LatencyChangedCallback* const cb)

  59.         : CarlaEngineClient(engine),

  60.           fLatencyCallback(cb) {}

  61. 

  62. protected:

  63.     void setLatency(const uint32_t samples) noexcept override

  64.     {

  65.         if (getLatency() == samples)

  66.             return;

  67. 

  68.         fLatencyCallback->latencyChanged(samples);

  69.         CarlaEngineClient::setLatency(samples);

  70.     }

  71. 

  72. private:

  73.     LatencyChangedCallback* const fLatencyCallback;

  74. 

  75.     CARLA_DECLARE_NON_COPY_CLASS(CarlaEngineBridgeClient)

  76. };

  77. 

  78. // -------------------------------------------------------------------

  79. 

  80. class CarlaEngineBridge : public CarlaEngine,

  81.                           private CarlaThread,

  82.                           private LatencyChangedCallback

  83. {

  84. public:

  85.     CarlaEngineBridge(const char* const audioPoolBaseName, const char* const rtClientBaseName, const char* const nonRtClientBaseName, const char* const nonRtServerBaseName)

  86.         : CarlaEngine(),

  87.           CarlaThread("CarlaEngineBridge"),

  88.           fShmAudioPool(),

  89.           fShmRtClientControl(),

  90.           fShmNonRtClientControl(),

  91.           fShmNonRtServerControl(),

  92.           fBaseNameAudioPool(audioPoolBaseName),

  93.           fBaseNameRtClientControl(rtClientBaseName),

  94.           fBaseNameNonRtClientControl(nonRtClientBaseName),

  95.           fBaseNameNonRtServerControl(nonRtServerBaseName),

  96.           fClosingDown(false),

  97.           fIsOffline(false),

  98.           fFirstIdle(true),

  99.           fLastPingTime(-1)

  100.     {

  101.         carla_debug("CarlaEngineBridge::CarlaEngineBridge(\"%s\", \"%s\", \"%s\", \"%s\")", audioPoolBaseName, rtClientBaseName, nonRtClientBaseName, nonRtServerBaseName);

  102.     }

  103. 

  104.     ~CarlaEngineBridge() noexcept override

  105.     {

  106.         carla_debug("CarlaEngineBridge::~CarlaEngineBridge()");

  107. 

  108.         clear();

  109.     }

  110. 

  111.     // -------------------------------------

  112.     // CarlaEngine virtual calls

  113. 

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

  115.     {

  116.         carla_debug("CarlaEngineBridge::init(\"%s\")", clientName);

  117. 

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

  119.         {

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

  121.             return false;

  122.         }

  123. 

  124.         if (! fShmAudioPool.attachClient(fBaseNameAudioPool))

  125.         {

  126.             carla_stderr("Failed to attach to audio pool shared memory");

  127.             return false;

  128.         }

  129. 

  130.         if (! fShmRtClientControl.attachClient(fBaseNameRtClientControl))

  131.         {

  132.             clear();

  133.             carla_stderr("Failed to attach to rt client control shared memory");

  134.             return false;

  135.         }

  136. 

  137.         if (! fShmRtClientControl.mapData())

  138.         {

  139.             clear();

  140.             carla_stderr("Failed to map rt client control shared memory");

  141.             return false;

  142.         }

  143. 

  144.         if (! fShmNonRtClientControl.attachClient(fBaseNameNonRtClientControl))

  145.         {

  146.             clear();

  147.             carla_stderr("Failed to attach to non-rt client control shared memory");

  148.             return false;

  149.         }

  150. 

  151.         if (! fShmNonRtClientControl.mapData())

  152.         {

  153.             clear();

  154.             carla_stderr("Failed to map non-rt control client shared memory");

  155.             return false;

  156.         }

  157. 

  158.         if (! fShmNonRtServerControl.attachClient(fBaseNameNonRtServerControl))

  159.         {

  160.             clear();

  161.             carla_stderr("Failed to attach to non-rt server control shared memory");

  162.             return false;

  163.         }

  164. 

  165.         if (! fShmNonRtServerControl.mapData())

  166.         {

  167.             clear();

  168.             carla_stderr("Failed to map non-rt control server shared memory");

  169.             return false;

  170.         }

  171. 

  172.         PluginBridgeNonRtClientOpcode opcode;

  173. 

  174.         opcode = fShmNonRtClientControl.readOpcode();

  175.         CARLA_SAFE_ASSERT_RETURN(opcode == kPluginBridgeNonRtClientVersion, false);

  176. 

  177.         const uint32_t apiVersion = fShmNonRtClientControl.readUInt();

  178.         CARLA_SAFE_ASSERT_RETURN(apiVersion == CARLA_PLUGIN_BRIDGE_API_VERSION, false);

  179. 

  180.         const uint32_t shmRtClientDataSize = fShmNonRtClientControl.readUInt();

  181.         CARLA_SAFE_ASSERT_INT2(shmRtClientDataSize == sizeof(BridgeRtClientData), shmRtClientDataSize, sizeof(BridgeRtClientData));

  182. 

  183.         const uint32_t shmNonRtClientDataSize = fShmNonRtClientControl.readUInt();

  184.         CARLA_SAFE_ASSERT_INT2(shmNonRtClientDataSize == sizeof(BridgeNonRtClientData), shmNonRtClientDataSize, sizeof(BridgeNonRtClientData));

  185. 

  186.         const uint32_t shmNonRtServerDataSize = fShmNonRtClientControl.readUInt();

  187.         CARLA_SAFE_ASSERT_INT2(shmNonRtServerDataSize == sizeof(BridgeNonRtServerData), shmNonRtServerDataSize, sizeof(BridgeNonRtServerData));

  188. 

  189.         if (shmRtClientDataSize != sizeof(BridgeRtClientData) ||

  190.             shmNonRtClientDataSize != sizeof(BridgeNonRtClientData) ||

  191.             shmNonRtServerDataSize != sizeof(BridgeNonRtServerData))

  192.         {

  193.             carla_stderr2("CarlaEngineBridge: data size mismatch");

  194.             return false;

  195.         }

  196. 

  197.         opcode = fShmNonRtClientControl.readOpcode();

  198.         CARLA_SAFE_ASSERT_RETURN(opcode == kPluginBridgeNonRtClientInitialSetup, false);

  199. 

  200.         pData->bufferSize = fShmNonRtClientControl.readUInt();

  201.         pData->sampleRate = fShmNonRtClientControl.readDouble();

  202. 

  203.         if (pData->bufferSize == 0 || carla_isZero(pData->sampleRate))

  204.         {

  205.             carla_stderr2("CarlaEngineBridge: invalid empty state");

  206.             return false;

  207.         }

  208. 

  209.         pData->initTime(nullptr);

  210. 

  211.         // tell backend we're live

  212.         {

  213.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  214. 

  215.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPong);

  216.             fShmNonRtServerControl.commitWrite();

  217.         }

  218. 

  219.         startThread(true);

  220.         return true;

  221.     }

  222. 

  223.     bool close() override

  224.     {

  225.         carla_debug("CarlaEngineBridge::close()");

  226.         fLastPingTime = -1;

  227. 

  228.         CarlaEngine::close();

  229. 

  230.         stopThread(5000);

  231.         clear();

  232. 

  233.         return true;

  234.     }

  235. 

  236.     bool isRunning() const noexcept override

  237.     {

  238.         if (fClosingDown)

  239.             return false;

  240. 

  241.         return isThreadRunning() || ! fFirstIdle;

  242.     }

  243. 

  244.     bool isOffline() const noexcept override

  245.     {

  246.         return fIsOffline;

  247.     }

  248. 

  249.     EngineType getType() const noexcept override

  250.     {

  251.         return kEngineTypeBridge;

  252.     }

  253. 

  254.     const char* getCurrentDriverName() const noexcept override

  255.     {

  256.         return "Bridge";

  257.     }

  258. 

  259.     void touchPluginParameter(const uint id, const uint32_t parameterId, const bool touch) noexcept override

  260.     {

  261.         CARLA_SAFE_ASSERT_RETURN(id == 0,);

  262. 

  263.         const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  264.         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterTouch);

  265.         fShmNonRtServerControl.writeUInt(parameterId);

  266.         fShmNonRtServerControl.writeBool(touch);

  267.         fShmNonRtServerControl.commitWrite();

  268.     }

  269. 

  270.     CarlaEngineClient* addClient(CarlaPlugin* const) override

  271.     {

  272.         return new CarlaEngineBridgeClient(*this, this);

  273.     }

  274. 

  275.     void idle() noexcept override

  276.     {

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

  278. 

  279.         if (plugin == nullptr)

  280.         {

  281.             if (const uint32_t length = static_cast<uint32_t>(pData->lastError.length()))

  282.             {

  283.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  284.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerError);

  285.                 fShmNonRtServerControl.writeUInt(length);

  286.                 fShmNonRtServerControl.writeCustomData(pData->lastError.buffer(), length);

  287.                 fShmNonRtServerControl.commitWrite();

  288.             }

  289. 

  290.             signalThreadShouldExit();

  291.             callback(true, true, ENGINE_CALLBACK_QUIT, 0, 0, 0, 0, 0.0f, nullptr);

  292.             return;

  293.         }

  294. 

  295.         const bool wasFirstIdle(fFirstIdle);

  296. 

  297.         if (wasFirstIdle)

  298.         {

  299.             fFirstIdle = false;

  300.             fLastPingTime = Time::currentTimeMillis();

  301.             CARLA_SAFE_ASSERT(fLastPingTime > 0);

  302. 

  303.             char bufStr[STR_MAX+1];

  304.             uint32_t bufStrSize;

  305. 

  306.             const CarlaEngineClient* const client(plugin->getEngineClient());

  307.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  308. 

  309.             // kPluginBridgeNonRtServerPluginInfo1

  310.             {

  311.                 // uint/category, uint/hints, uint/optionsAvailable, uint/optionsEnabled, long/uniqueId

  312.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPluginInfo1);

  313.                 fShmNonRtServerControl.writeUInt(plugin->getCategory());

  314.                 fShmNonRtServerControl.writeUInt(plugin->getHints());

  315.                 fShmNonRtServerControl.writeUInt(plugin->getOptionsAvailable());

  316.                 fShmNonRtServerControl.writeUInt(plugin->getOptionsEnabled());

  317.                 fShmNonRtServerControl.writeLong(plugin->getUniqueId());

  318.                 fShmNonRtServerControl.commitWrite();

  319.             }

  320. 

  321.             // kPluginBridgeNonRtServerPluginInfo2

  322.             {

  323.                 // uint/size, str[] (realName), uint/size, str[] (label), uint/size, str[] (maker), uint/size, str[] (copyright)

  324.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPluginInfo2);

  325. 

  326.                 carla_zeroChars(bufStr, STR_MAX);

  327.                 plugin->getRealName(bufStr);

  328.                 bufStrSize = carla_fixedValue(1U, 64U, static_cast<uint32_t>(std::strlen(bufStr)));

  329.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  330.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  331. 

  332.                 carla_zeroChars(bufStr, STR_MAX);

  333.                 plugin->getLabel(bufStr);

  334.                 bufStrSize = carla_fixedValue(1U, 256U, static_cast<uint32_t>(std::strlen(bufStr)));

  335.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  336.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  337. 

  338.                 carla_zeroChars(bufStr, STR_MAX);

  339.                 plugin->getMaker(bufStr);

  340.                 bufStrSize = carla_fixedValue(1U, 64U, static_cast<uint32_t>(std::strlen(bufStr)));

  341.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  342.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  343. 

  344.                 carla_zeroChars(bufStr, STR_MAX);

  345.                 plugin->getCopyright(bufStr);

  346.                 bufStrSize = carla_fixedValue(1U, 64U, static_cast<uint32_t>(std::strlen(bufStr)));

  347.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  348.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  349. 

  350.                 fShmNonRtServerControl.commitWrite();

  351.             }

  352. 

  353.             // kPluginBridgeNonRtServerAudioCount

  354.             {

  355.                 const uint32_t aIns  = plugin->getAudioInCount();

  356.                 const uint32_t aOuts = plugin->getAudioOutCount();

  357. 

  358.                 // uint/ins, uint/outs

  359.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerAudioCount);

  360.                 fShmNonRtServerControl.writeUInt(aIns);

  361.                 fShmNonRtServerControl.writeUInt(aOuts);

  362.                 fShmNonRtServerControl.commitWrite();

  363. 

  364.                 // kPluginBridgeNonRtServerPortName

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

  366.                 {

  367.                     const char* const portName(client->getAudioPortName(true, i));

  368.                     CARLA_SAFE_ASSERT_CONTINUE(portName != nullptr && portName[0] != '\0');

  369. 

  370.                     // byte/type, uint/index, uint/size, str[] (name)

  371.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPortName);

  372.                     fShmNonRtServerControl.writeByte(kPluginBridgePortAudioInput);

  373.                     fShmNonRtServerControl.writeUInt(i);

  374. 

  375.                     bufStrSize = static_cast<uint32_t>(std::strlen(portName));

  376.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  377.                     fShmNonRtServerControl.writeCustomData(portName, bufStrSize);

  378.                 }

  379. 

  380.                 // kPluginBridgeNonRtServerPortName

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

  382.                 {

  383.                     const char* const portName(client->getAudioPortName(false, i));

  384.                     CARLA_SAFE_ASSERT_CONTINUE(portName != nullptr && portName[0] != '\0');

  385. 

  386.                     // byte/type, uint/index, uint/size, str[] (name)

  387.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPortName);

  388.                     fShmNonRtServerControl.writeByte(kPluginBridgePortAudioOutput);

  389.                     fShmNonRtServerControl.writeUInt(i);

  390. 

  391.                     bufStrSize = static_cast<uint32_t>(std::strlen(portName));

  392.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  393.                     fShmNonRtServerControl.writeCustomData(portName, bufStrSize);

  394.                 }

  395.             }

  396. 

  397.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  398. 

  399.             // kPluginBridgeNonRtServerMidiCount

  400.             {

  401.                 // uint/ins, uint/outs

  402.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiCount);

  403.                 fShmNonRtServerControl.writeUInt(plugin->getMidiInCount());

  404.                 fShmNonRtServerControl.writeUInt(plugin->getMidiOutCount());

  405.                 fShmNonRtServerControl.commitWrite();

  406.             }

  407. 

  408.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  409. 

  410.             // kPluginBridgeNonRtServerCvCount

  411.             {

  412.                 // uint/ins, uint/outs

  413.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCvCount);

  414.                 fShmNonRtServerControl.writeUInt(plugin->getCVInCount());

  415.                 fShmNonRtServerControl.writeUInt(plugin->getCVOutCount());

  416.                 fShmNonRtServerControl.commitWrite();

  417.             }

  418. 

  419.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  420. 

  421.             // kPluginBridgeNonRtServerParameter*

  422.             if (const uint32_t count = std::min(pData->options.maxParameters, plugin->getParameterCount()))

  423.             {

  424.                 // uint/count

  425.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterCount);

  426.                 fShmNonRtServerControl.writeUInt(count);

  427.                 fShmNonRtServerControl.commitWrite();

  428. 

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

  430.                 {

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

  432. 

  433.                     if (paramData.type != PARAMETER_INPUT && paramData.type != PARAMETER_OUTPUT)

  434.                         continue;

  435.                     if ((paramData.hints & PARAMETER_IS_ENABLED) == 0)

  436.                         continue;

  437. 

  438.                     // kPluginBridgeNonRtServerParameterData1

  439.                     {

  440.                         // uint/index, int/rindex, uint/type, uint/hints, short/cc

  441.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterData1);

  442.                         fShmNonRtServerControl.writeUInt(i);

  443.                         fShmNonRtServerControl.writeInt(paramData.rindex);

  444.                         fShmNonRtServerControl.writeUInt(paramData.type);

  445.                         fShmNonRtServerControl.writeUInt(paramData.hints);

  446.                         fShmNonRtServerControl.writeShort(paramData.midiCC);

  447.                         fShmNonRtServerControl.commitWrite();

  448.                     }

  449. 

  450.                     // kPluginBridgeNonRtServerParameterData2

  451.                     {

  452.                         // uint/index, uint/size, str[] (name), uint/size, str[] (symbol), uint/size, str[] (unit)

  453.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterData2);

  454.                         fShmNonRtServerControl.writeUInt(i);

  455. 

  456.                         carla_zeroChars(bufStr, STR_MAX);

  457.                         plugin->getParameterName(i, bufStr);

  458.                         bufStrSize = carla_fixedValue(1U, 32U, static_cast<uint32_t>(std::strlen(bufStr)));

  459.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  460.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  461. 

  462.                         carla_zeroChars(bufStr, STR_MAX);

  463.                         plugin->getParameterSymbol(i, bufStr);

  464.                         bufStrSize = carla_fixedValue(1U, 64U, static_cast<uint32_t>(std::strlen(bufStr)));

  465.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  466.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  467. 

  468.                         carla_zeroChars(bufStr, STR_MAX);

  469.                         plugin->getParameterUnit(i, bufStr);

  470.                         bufStrSize = carla_fixedValue(1U, 32U, static_cast<uint32_t>(std::strlen(bufStr)));

  471.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  472.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  473. 

  474.                         fShmNonRtServerControl.commitWrite();

  475.                     }

  476. 

  477.                     // kPluginBridgeNonRtServerParameterRanges

  478.                     {

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

  480. 

  481.                         // uint/index, float/def, float/min, float/max, float/step, float/stepSmall, float/stepLarge

  482.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterRanges);

  483.                         fShmNonRtServerControl.writeUInt(i);

  484.                         fShmNonRtServerControl.writeFloat(paramRanges.def);

  485.                         fShmNonRtServerControl.writeFloat(paramRanges.min);

  486.                         fShmNonRtServerControl.writeFloat(paramRanges.max);

  487.                         fShmNonRtServerControl.writeFloat(paramRanges.step);

  488.                         fShmNonRtServerControl.writeFloat(paramRanges.stepSmall);

  489.                         fShmNonRtServerControl.writeFloat(paramRanges.stepLarge);

  490.                         fShmNonRtServerControl.commitWrite();

  491.                     }

  492. 

  493.                     // kPluginBridgeNonRtServerParameterValue2

  494.                     {

  495.                         // uint/index float/value (used for init/output parameters only, don't resend values)

  496.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue2);

  497.                         fShmNonRtServerControl.writeUInt(i);

  498.                         fShmNonRtServerControl.writeFloat(plugin->getParameterValue(i));

  499.                         fShmNonRtServerControl.commitWrite();

  500.                     }

  501. 

  502.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  503.                 }

  504.             }

  505. 

  506.             // kPluginBridgeNonRtServerProgram*

  507.             if (const uint32_t count = plugin->getProgramCount())

  508.             {

  509.                 // uint/count

  510.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerProgramCount);

  511.                 fShmNonRtServerControl.writeUInt(count);

  512.                 fShmNonRtServerControl.commitWrite();

  513. 

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

  515.                 {

  516.                     // uint/index, uint/size, str[] (name)

  517.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerProgramName);

  518.                     fShmNonRtServerControl.writeUInt(i);

  519. 

  520.                     carla_zeroChars(bufStr, STR_MAX);

  521.                     plugin->getProgramName(i, bufStr);

  522.                     bufStrSize = carla_fixedValue(1U, 32U, static_cast<uint32_t>(std::strlen(bufStr)));

  523.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  524.                     fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  525. 

  526.                     fShmNonRtServerControl.commitWrite();

  527.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  528.                 }

  529.             }

  530. 

  531.             // kPluginBridgeNonRtServerMidiProgram*

  532.             if (const uint32_t count = plugin->getMidiProgramCount())

  533.             {

  534.                 // uint/count

  535.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiProgramCount);

  536.                 fShmNonRtServerControl.writeUInt(count);

  537.                 fShmNonRtServerControl.commitWrite();

  538. 

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

  540.                 {

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

  542.                     CARLA_SAFE_ASSERT_CONTINUE(mpData.name != nullptr);

  543. 

  544.                     // uint/index, uint/bank, uint/program, uint/size, str[] (name)

  545.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiProgramData);

  546.                     fShmNonRtServerControl.writeUInt(i);

  547.                     fShmNonRtServerControl.writeUInt(mpData.bank);

  548.                     fShmNonRtServerControl.writeUInt(mpData.program);

  549. 

  550.                     bufStrSize = carla_fixedValue(1U, 32U, static_cast<uint32_t>(std::strlen(mpData.name)));

  551.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  552.                     fShmNonRtServerControl.writeCustomData(mpData.name, bufStrSize);

  553. 

  554.                     fShmNonRtServerControl.commitWrite();

  555.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  556.                 }

  557.             }

  558. 

  559.             if (const uint32_t latency = plugin->getLatencyInFrames())

  560.             {

  561.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetLatency);

  562.                 fShmNonRtServerControl.writeUInt(latency);

  563.                 fShmNonRtServerControl.commitWrite();

  564.             }

  565. 

  566.             // ready!

  567.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerReady);

  568.             fShmNonRtServerControl.commitWrite();

  569.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  570. 

  571.             carla_stdout("Carla Bridge Ready!");

  572.             fLastPingTime = Time::currentTimeMillis();

  573.         }

  574. 

  575.         // send parameter outputs

  576.         if (const uint32_t count = plugin->getParameterCount())

  577.         {

  578.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  579. 

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

  581.             {

  582.                 if (! plugin->isParameterOutput(i))

  583.                     continue;

  584. 

  585.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue2);

  586.                 fShmNonRtServerControl.writeUInt(i);

  587.                 fShmNonRtServerControl.writeFloat(plugin->getParameterValue(i));

  588. 

  589.                 // parameter outputs are not that important, we can skip some

  590.                 if (! fShmNonRtServerControl.commitWrite())

  591.                     break;

  592.             }

  593.         }

  594. 

  595.         CarlaEngine::idle();

  596. 

  597.         try {

  598.             handleNonRtData();

  599.         } CARLA_SAFE_EXCEPTION("handleNonRtData");

  600. 

  601.         if (fLastPingTime > 0 && Time::currentTimeMillis() > fLastPingTime + 30000 && ! wasFirstIdle)

  602.         {

  603.             carla_stderr("Did not receive ping message from server for 30 secs, closing...");

  604.             signalThreadShouldExit();

  605.             callback(true, true, ENGINE_CALLBACK_QUIT, 0, 0, 0, 0, 0.0f, nullptr);

  606.         }

  607.     }

  608. 

  609.     void callback(const bool sendHost, const bool sendOsc,

  610.                   const EngineCallbackOpcode action, const uint pluginId,

  611.                   const int value1, const int value2, const int value3,

  612.                   const float valuef, const char* const valueStr) noexcept override

  613.     {

  614.         CarlaEngine::callback(sendHost, sendOsc, action, pluginId, value1, value2, value3, valuef, valueStr);

  615. 

  616.         if (fClosingDown)

  617.             return;

  618. 

  619.         switch (action)

  620.         {

  621.         // uint/index float/value

  622.         case ENGINE_CALLBACK_PARAMETER_VALUE_CHANGED: {

  623.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  624.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  625.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue);

  626.             fShmNonRtServerControl.writeUInt(static_cast<uint>(value1));

  627.             fShmNonRtServerControl.writeFloat(valuef);

  628.             fShmNonRtServerControl.commitWrite();

  629.         }   break;

  630. 

  631.         // uint/index float/value

  632.         case ENGINE_CALLBACK_PARAMETER_DEFAULT_CHANGED: {

  633.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  634.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  635.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerDefaultValue);

  636.             fShmNonRtServerControl.writeUInt(static_cast<uint>(value1));

  637.             fShmNonRtServerControl.writeFloat(valuef);

  638.             fShmNonRtServerControl.commitWrite();

  639.         }   break;

  640. 

  641.         // int/index

  642.         case ENGINE_CALLBACK_PROGRAM_CHANGED: {

  643.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  644.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  645.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCurrentProgram);

  646.             fShmNonRtServerControl.writeInt(value1);

  647.             fShmNonRtServerControl.commitWrite();

  648.         }   break;

  649. 

  650.         // int/index

  651.         case ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED: {

  652.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  653.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  654.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCurrentMidiProgram);

  655.             fShmNonRtServerControl.writeInt(value1);

  656.             fShmNonRtServerControl.commitWrite();

  657.         }   break;

  658. 

  659.         case ENGINE_CALLBACK_UI_STATE_CHANGED:

  660.             if (value1 != 1)

  661.             {

  662.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  663.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerUiClosed);

  664.                 fShmNonRtServerControl.commitWrite();

  665.             }

  666.             break;

  667. 

  668.         case ENGINE_CALLBACK_RELOAD_PARAMETERS:

  669.             if (CarlaPlugin* const plugin = pData->plugins[0].plugin)

  670.             {

  671.                 if (const uint32_t count = std::min(pData->options.maxParameters, plugin->getParameterCount()))

  672.                 {

  673.                     const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  674. 

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

  676.                     {

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

  678. 

  679.                         if (paramData.type != PARAMETER_INPUT && paramData.type != PARAMETER_OUTPUT)

  680.                             continue;

  681.                         if ((paramData.hints & PARAMETER_IS_ENABLED) == 0)

  682.                             continue;

  683. 

  684.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue);

  685.                         fShmNonRtServerControl.writeUInt(i);

  686.                         fShmNonRtServerControl.writeFloat(plugin->getParameterValue(i));

  687.                         fShmNonRtServerControl.commitWrite();

  688. 

  689.                         fShmNonRtServerControl.waitIfDataIsReachingLimit();

  690.                     }

  691.                 }

  692.             }

  693.             break;

  694. 

  695.         default:

  696.             break;

  697.         }

  698.     }

  699. 

  700.     // -------------------------------------------------------------------

  701. 

  702.     void clear() noexcept

  703.     {

  704.         fShmAudioPool.clear();

  705.         fShmRtClientControl.clear();

  706.         fShmNonRtClientControl.clear();

  707.         fShmNonRtServerControl.clear();

  708.     }

  709. 

  710.     void handleNonRtData()

  711.     {

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

  713.         CARLA_SAFE_ASSERT_RETURN(plugin != nullptr,);

  714. 

  715.         for (; fShmNonRtClientControl.isDataAvailableForReading();)

  716.         {

  717.             const PluginBridgeNonRtClientOpcode opcode(fShmNonRtClientControl.readOpcode());

  718. 

  719. #ifdef DEBUG

  720.             if (opcode != kPluginBridgeNonRtClientPing) {

  721.                 carla_debug("CarlaEngineBridge::handleNonRtData() - got opcode: %s", PluginBridgeNonRtClientOpcode2str(opcode));

  722.             }

  723. #endif

  724. 

  725.             if (opcode != kPluginBridgeNonRtClientNull && opcode != kPluginBridgeNonRtClientPingOnOff && fLastPingTime > 0)

  726.                 fLastPingTime = Time::currentTimeMillis();

  727. 

  728.             switch (opcode)

  729.             {

  730.             case kPluginBridgeNonRtClientNull:

  731.                 break;

  732. 

  733.             case kPluginBridgeNonRtClientVersion: {

  734.                 const uint apiVersion = fShmNonRtServerControl.readUInt();

  735.                 CARLA_SAFE_ASSERT_UINT2(apiVersion == CARLA_PLUGIN_BRIDGE_API_VERSION, apiVersion, CARLA_PLUGIN_BRIDGE_API_VERSION);

  736.             }   break;

  737. 

  738.             case kPluginBridgeNonRtClientPing: {

  739.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  740. 

  741.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPong);

  742.                 fShmNonRtServerControl.commitWrite();

  743.             }   break;

  744. 

  745.             case kPluginBridgeNonRtClientPingOnOff: {

  746.                 const uint32_t onOff(fShmNonRtClientControl.readBool());

  747. 

  748.                 fLastPingTime = onOff ? Time::currentTimeMillis() : -1;

  749.             }   break;

  750. 

  751.             case kPluginBridgeNonRtClientActivate:

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

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

  754.                 break;

  755. 

  756.             case kPluginBridgeNonRtClientDeactivate:

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

  758.                     plugin->setActive(false, false, false);

  759.                 break;

  760. 

  761.             case kPluginBridgeNonRtClientInitialSetup:

  762.                 // should never happen!!

  763.                 fShmNonRtServerControl.readUInt();

  764.                 fShmNonRtServerControl.readDouble();

  765.                 break;

  766. 

  767.             case kPluginBridgeNonRtClientSetParameterValue: {

  768.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  769.                 const float    value(fShmNonRtClientControl.readFloat());

  770. 

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

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

  773.                 break;

  774.             }

  775. 

  776.             case kPluginBridgeNonRtClientSetParameterMidiChannel: {

  777.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  778.                 const uint8_t  channel(fShmNonRtClientControl.readByte());

  779. 

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

  781.                     plugin->setParameterMidiChannel(index, channel, false, false);

  782.                 break;

  783.             }

  784. 

  785.             case kPluginBridgeNonRtClientSetParameterMidiCC: {

  786.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  787.                 const int16_t  cc(fShmNonRtClientControl.readShort());

  788. 

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

  790.                     plugin->setParameterMidiCC(index, cc, false, false);

  791.                 break;

  792.             }

  793. 

  794.             case kPluginBridgeNonRtClientSetProgram: {

  795.                 const int32_t index(fShmNonRtClientControl.readInt());

  796. 

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

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

  799.                 break;

  800.             }

  801. 

  802.             case kPluginBridgeNonRtClientSetMidiProgram: {

  803.                 const int32_t index(fShmNonRtClientControl.readInt());

  804. 

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

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

  807.                 break;

  808.             }

  809. 

  810.             case kPluginBridgeNonRtClientSetCustomData: {

  811.                 // type

  812.                 const uint32_t typeSize(fShmNonRtClientControl.readUInt());

  813.                 char typeStr[typeSize+1];

  814.                 carla_zeroChars(typeStr, typeSize+1);

  815.                 fShmNonRtClientControl.readCustomData(typeStr, typeSize);

  816. 

  817.                 // key

  818.                 const uint32_t keySize(fShmNonRtClientControl.readUInt());

  819.                 char keyStr[keySize+1];

  820.                 carla_zeroChars(keyStr, keySize+1);

  821.                 fShmNonRtClientControl.readCustomData(keyStr, keySize);

  822. 

  823.                 // value

  824.                 const uint32_t valueSize(fShmNonRtClientControl.readUInt());

  825.                 char valueStr[valueSize+1];

  826.                 carla_zeroChars(valueStr, valueSize+1);

  827. 

  828.                 if (valueSize > 0)

  829.                     fShmNonRtClientControl.readCustomData(valueStr, valueSize);

  830. 

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

  832.                     plugin->setCustomData(typeStr, keyStr, valueStr, true);

  833.                 break;

  834.             }

  835. 

  836.             case kPluginBridgeNonRtClientSetChunkDataFile: {

  837.                 const uint32_t size(fShmNonRtClientControl.readUInt());

  838.                 CARLA_SAFE_ASSERT_BREAK(size > 0);

  839. 

  840.                 char chunkFilePathTry[size+1];

  841.                 carla_zeroChars(chunkFilePathTry, size+1);

  842.                 fShmNonRtClientControl.readCustomData(chunkFilePathTry, size);

  843. 

  844.                 CARLA_SAFE_ASSERT_BREAK(chunkFilePathTry[0] != '\0');

  845.                 if (plugin == nullptr || ! plugin->isEnabled()) break;

  846. 

  847.                 String chunkFilePath(chunkFilePathTry);

  848. 

  849. #ifdef CARLA_OS_WIN

  850.                 // check if running under Wine

  851.                 if (chunkFilePath.startsWith("/"))

  852.                     chunkFilePath = chunkFilePath.replaceSection(0, 1, "Z:\\").replace("/", "\\");

  853. #endif

  854. 

  855.                 File chunkFile(chunkFilePath);

  856.                 CARLA_SAFE_ASSERT_BREAK(chunkFile.existsAsFile());

  857. 

  858.                 String chunkDataBase64(chunkFile.loadFileAsString());

  859.                 chunkFile.deleteFile();

  860.                 CARLA_SAFE_ASSERT_BREAK(chunkDataBase64.isNotEmpty());

  861. 

  862.                 std::vector<uint8_t> chunk(carla_getChunkFromBase64String(chunkDataBase64.toRawUTF8()));

  863. 

  864. #ifdef CARLA_PROPER_CPP11_SUPPORT

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

  866. #else

  867.                 plugin->setChunkData(&chunk.front(), chunk.size());

  868. #endif

  869.                 break;

  870.             }

  871. 

  872.             case kPluginBridgeNonRtClientSetCtrlChannel: {

  873.                 const int16_t channel(fShmNonRtClientControl.readShort());

  874.                 CARLA_SAFE_ASSERT_BREAK(channel >= -1 && channel < MAX_MIDI_CHANNELS);

  875. 

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

  877.                     plugin->setCtrlChannel(static_cast<int8_t>(channel), false, false);

  878.                 break;

  879.             }

  880. 

  881.             case kPluginBridgeNonRtClientSetOption: {

  882.                 const uint32_t option(fShmNonRtClientControl.readUInt());

  883.                 const bool     yesNo(fShmNonRtClientControl.readBool());

  884. 

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

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

  887.                 break;

  888.             }

  889. 

  890.             case kPluginBridgeNonRtClientGetParameterText: {

  891.                 const int32_t index(fShmNonRtClientControl.readInt());

  892. 

  893.                 if (index >= 0 && plugin != nullptr && plugin->isEnabled())

  894.                 {

  895.                     char strBuf[STR_MAX];

  896.                     plugin->getParameterText(static_cast<uint32_t>(index), strBuf);

  897.                     const uint32_t strBufLen = static_cast<uint32_t>(std::strlen(strBuf));

  898. 

  899.                     const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  900. 

  901.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetParameterText);

  902. 

  903.                     fShmNonRtServerControl.writeInt(index);

  904.                     fShmNonRtServerControl.writeUInt(strBufLen);

  905.                     fShmNonRtServerControl.writeCustomData(strBuf, strBufLen);

  906.                     fShmNonRtServerControl.commitWrite();

  907. 

  908.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  909.                 }

  910. 

  911.                 break;

  912.             }

  913. 

  914.             case kPluginBridgeNonRtClientPrepareForSave: {

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

  916.                     break;

  917. 

  918.                 plugin->prepareForSave();

  919. 

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

  921.                 {

  922.                     const CustomData& cdata(plugin->getCustomData(i));

  923. 

  924.                     if (std::strcmp(cdata.type, CUSTOM_DATA_TYPE_PROPERTY) == 0)

  925.                         continue;

  926. 

  927.                     const uint32_t typeLen(static_cast<uint32_t>(std::strlen(cdata.type)));

  928.                     const uint32_t keyLen(static_cast<uint32_t>(std::strlen(cdata.key)));

  929.                     const uint32_t valueLen(static_cast<uint32_t>(std::strlen(cdata.value)));

  930. 

  931.                     {

  932.                         const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  933. 

  934.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetCustomData);

  935. 

  936.                         fShmNonRtServerControl.writeUInt(typeLen);

  937.                         fShmNonRtServerControl.writeCustomData(cdata.type, typeLen);

  938. 

  939.                         fShmNonRtServerControl.writeUInt(keyLen);

  940.                         fShmNonRtServerControl.writeCustomData(cdata.key, keyLen);

  941. 

  942.                         fShmNonRtServerControl.writeUInt(valueLen);

  943. 

  944.                         if (valueLen > 0)

  945.                             fShmNonRtServerControl.writeCustomData(cdata.value, valueLen);

  946. 

  947.                         fShmNonRtServerControl.commitWrite();

  948.                         fShmNonRtServerControl.waitIfDataIsReachingLimit();

  949.                     }

  950.                 }

  951. 

  952.                 if (plugin->getOptionsEnabled() & PLUGIN_OPTION_USE_CHUNKS)

  953.                 {

  954.                     void* data = nullptr;

  955.                     if (const std::size_t dataSize = plugin->getChunkData(&data))

  956.                     {

  957.                         CARLA_SAFE_ASSERT_BREAK(data != nullptr);

  958. 

  959.                         CarlaString dataBase64 = CarlaString::asBase64(data, dataSize);

  960.                         CARLA_SAFE_ASSERT_BREAK(dataBase64.length() > 0);

  961. 

  962.                         String filePath(File::getSpecialLocation(File::tempDirectory).getFullPathName());

  963. 

  964.                         filePath += CARLA_OS_SEP_STR ".CarlaChunk_";

  965.                         filePath += fShmAudioPool.getFilenameSuffix();

  966. 

  967.                         if (File(filePath).replaceWithText(dataBase64.buffer()))

  968.                         {

  969.                             const uint32_t ulength(static_cast<uint32_t>(filePath.length()));

  970. 

  971.                             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  972. 

  973.                             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetChunkDataFile);

  974.                             fShmNonRtServerControl.writeUInt(ulength);

  975.                             fShmNonRtServerControl.writeCustomData(filePath.toRawUTF8(), ulength);

  976.                             fShmNonRtServerControl.commitWrite();

  977.                         }

  978.                     }

  979.                 }

  980. 

  981.                 {

  982.                     const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  983. 

  984.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSaved);

  985.                     fShmNonRtServerControl.commitWrite();

  986.                 }

  987.                 break;

  988.             }

  989. 

  990.             case kPluginBridgeNonRtClientRestoreLV2State:

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

  992.                     plugin->restoreLV2State();

  993.                 break;

  994. 

  995.             case kPluginBridgeNonRtClientShowUI:

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

  997.                     plugin->showCustomUI(true);

  998.                 break;

  999. 

  1000.             case kPluginBridgeNonRtClientHideUI:

  1001.                 if (plugin != nullptr && plugin->isEnabled())

  1002.                     plugin->showCustomUI(false);

  1003.                 break;

  1004. 

  1005.             case kPluginBridgeNonRtClientUiParameterChange: {

  1006.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1007.                 const float    value(fShmNonRtClientControl.readFloat());

  1008. 

  1009.                 if (plugin != nullptr && plugin->isEnabled())

  1010.                     plugin->uiParameterChange(index, value);

  1011.                 break;

  1012.             }

  1013. 

  1014.             case kPluginBridgeNonRtClientUiProgramChange: {

  1015.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1016. 

  1017.                 if (plugin != nullptr && plugin->isEnabled())

  1018.                     plugin->uiProgramChange(index);

  1019.                 break;

  1020.             }

  1021. 

  1022.             case kPluginBridgeNonRtClientUiMidiProgramChange: {

  1023.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1024. 

  1025.                 if (plugin != nullptr && plugin->isEnabled())

  1026.                     plugin->uiMidiProgramChange(index);

  1027.                 break;

  1028.             }

  1029. 

  1030.             case kPluginBridgeNonRtClientUiNoteOn: {

  1031.                 const uint8_t chnl(fShmNonRtClientControl.readByte());

  1032.                 const uint8_t note(fShmNonRtClientControl.readByte());

  1033.                 const uint8_t velo(fShmNonRtClientControl.readByte());

  1034. 

  1035.                 if (plugin != nullptr && plugin->isEnabled())

  1036.                     plugin->uiNoteOn(chnl, note, velo);

  1037.                 break;

  1038.             }

  1039. 

  1040.             case kPluginBridgeNonRtClientUiNoteOff: {

  1041.                 const uint8_t chnl(fShmNonRtClientControl.readByte());

  1042.                 const uint8_t note(fShmNonRtClientControl.readByte());

  1043. 

  1044.                 if (plugin != nullptr && plugin->isEnabled())

  1045.                     plugin->uiNoteOff(chnl, note);

  1046.                 break;

  1047.             }

  1048. 

  1049.             case kPluginBridgeNonRtClientQuit:

  1050.                 fClosingDown = true;

  1051.                 signalThreadShouldExit();

  1052.                 callback(true, true, ENGINE_CALLBACK_QUIT, 0, 0, 0, 0, 0.0f, nullptr);

  1053.                 break;

  1054.             }

  1055.         }

  1056.     }

  1057. 

  1058.     // -------------------------------------------------------------------

  1059. 

  1060. protected:

  1061.     void run() override

  1062.     {

  1063. #ifdef __SSE2_MATH__

  1064.         // Set FTZ and DAZ flags

  1065.         _mm_setcsr(_mm_getcsr() | 0x8040);

  1066. #endif

  1067. 

  1068.         bool quitReceived = false;

  1069. 

  1070.         for (; ! shouldThreadExit();)

  1071.         {

  1072.             const BridgeRtClientControl::WaitHelper helper(fShmRtClientControl);

  1073. 

  1074.             if (! helper.ok)

  1075.                 continue;

  1076. 

  1077.             for (; fShmRtClientControl.isDataAvailableForReading();)

  1078.             {

  1079.                 const PluginBridgeRtClientOpcode opcode(fShmRtClientControl.readOpcode());

  1080.                 CarlaPlugin* const plugin(pData->plugins[0].plugin);

  1081. 

  1082. #ifdef DEBUG

  1083.                 if (opcode != kPluginBridgeRtClientProcess && opcode != kPluginBridgeRtClientMidiEvent) {

  1084.                     carla_debug("CarlaEngineBridgeRtThread::run() - got opcode: %s", PluginBridgeRtClientOpcode2str(opcode));

  1085.                 }

  1086. #endif

  1087. 

  1088.                 switch (opcode)

  1089.                 {

  1090.                 case kPluginBridgeRtClientNull:

  1091.                     break;

  1092. 

  1093.                 case kPluginBridgeRtClientSetAudioPool: {

  1094.                     if (fShmAudioPool.data != nullptr)

  1095.                     {

  1096.                         jackbridge_shm_unmap(fShmAudioPool.shm, fShmAudioPool.data);

  1097.                         fShmAudioPool.data = nullptr;

  1098.                     }

  1099.                     const uint64_t poolSize(fShmRtClientControl.readULong());

  1100.                     CARLA_SAFE_ASSERT_BREAK(poolSize > 0);

  1101.                     fShmAudioPool.data = (float*)jackbridge_shm_map(fShmAudioPool.shm, static_cast<size_t>(poolSize));

  1102.                     break;

  1103.                 }

  1104. 

  1105.                 case kPluginBridgeRtClientSetBufferSize: {

  1106.                     const uint32_t bufferSize(fShmRtClientControl.readUInt());

  1107.                     pData->bufferSize = bufferSize;

  1108.                     bufferSizeChanged(bufferSize);

  1109.                     break;

  1110.                 }

  1111. 

  1112.                 case kPluginBridgeRtClientSetSampleRate: {

  1113.                     const double sampleRate(fShmRtClientControl.readDouble());

  1114.                     pData->sampleRate = sampleRate;

  1115.                     sampleRateChanged(sampleRate);

  1116.                     break;

  1117.                 }

  1118. 

  1119.                 case kPluginBridgeRtClientSetOnline:

  1120.                     fIsOffline = fShmRtClientControl.readBool();

  1121.                     offlineModeChanged(fIsOffline);

  1122.                     break;

  1123. 

  1124.                 case kPluginBridgeRtClientControlEventParameter: {

  1125.                     const uint32_t time(fShmRtClientControl.readUInt());

  1126.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1127.                     const uint16_t param(fShmRtClientControl.readUShort());

  1128.                     const float    value(fShmRtClientControl.readFloat());

  1129. 

  1130.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1131.                     {

  1132.                         event->type    = kEngineEventTypeControl;

  1133.                         event->time    = time;

  1134.                         event->channel = channel;

  1135.                         event->ctrl.type  = kEngineControlEventTypeParameter;

  1136.                         event->ctrl.param = param;

  1137.                         event->ctrl.value = value;

  1138.                     }

  1139.                     break;

  1140.                 }

  1141. 

  1142.                 case kPluginBridgeRtClientControlEventMidiBank: {

  1143.                     const uint32_t time(fShmRtClientControl.readUInt());

  1144.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1145.                     const uint16_t index(fShmRtClientControl.readUShort());

  1146. 

  1147.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1148.                     {

  1149.                         event->type    = kEngineEventTypeControl;

  1150.                         event->time    = time;

  1151.                         event->channel = channel;

  1152.                         event->ctrl.type  = kEngineControlEventTypeMidiBank;

  1153.                         event->ctrl.param = index;

  1154.                         event->ctrl.value = 0.0f;

  1155.                     }

  1156.                     break;

  1157.                 }

  1158. 

  1159.                 case kPluginBridgeRtClientControlEventMidiProgram: {

  1160.                     const uint32_t time(fShmRtClientControl.readUInt());

  1161.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1162.                     const uint16_t index(fShmRtClientControl.readUShort());

  1163. 

  1164.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1165.                     {

  1166.                         event->type    = kEngineEventTypeControl;

  1167.                         event->time    = time;

  1168.                         event->channel = channel;

  1169.                         event->ctrl.type  = kEngineControlEventTypeMidiProgram;

  1170.                         event->ctrl.param = index;

  1171.                         event->ctrl.value = 0.0f;

  1172.                     }

  1173.                     break;

  1174.                 }

  1175. 

  1176.                 case kPluginBridgeRtClientControlEventAllSoundOff: {

  1177.                     const uint32_t time(fShmRtClientControl.readUInt());

  1178.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1179. 

  1180.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1181.                     {

  1182.                         event->type    = kEngineEventTypeControl;

  1183.                         event->time    = time;

  1184.                         event->channel = channel;

  1185.                         event->ctrl.type  = kEngineControlEventTypeAllSoundOff;

  1186.                         event->ctrl.param = 0;

  1187.                         event->ctrl.value = 0.0f;

  1188.                     }

  1189.                 }   break;

  1190. 

  1191.                 case kPluginBridgeRtClientControlEventAllNotesOff: {

  1192.                     const uint32_t time(fShmRtClientControl.readUInt());

  1193.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1194. 

  1195.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1196.                     {

  1197.                         event->type    = kEngineEventTypeControl;

  1198.                         event->time    = time;

  1199.                         event->channel = channel;

  1200.                         event->ctrl.type  = kEngineControlEventTypeAllNotesOff;

  1201.                         event->ctrl.param = 0;

  1202.                         event->ctrl.value = 0.0f;

  1203.                     }

  1204.                 }   break;

  1205. 

  1206.                 case kPluginBridgeRtClientMidiEvent: {

  1207.                     const uint32_t time(fShmRtClientControl.readUInt());

  1208.                     const uint8_t  port(fShmRtClientControl.readByte());

  1209.                     const uint8_t  size(fShmRtClientControl.readByte());

  1210.                     CARLA_SAFE_ASSERT_BREAK(size > 0);

  1211. 

  1212.                     // FIXME variable-size stack

  1213.                     uint8_t data[size];

  1214. 

  1215.                     for (uint8_t i=0; i<size; ++i)

  1216.                         data[i] = fShmRtClientControl.readByte();

  1217. 

  1218.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1219.                     {

  1220.                         event->type    = kEngineEventTypeMidi;

  1221.                         event->time    = time;

  1222.                         event->channel = MIDI_GET_CHANNEL_FROM_DATA(data);

  1223. 

  1224.                         event->midi.port = port;

  1225.                         event->midi.size = size;

  1226. 

  1227.                         if (size > EngineMidiEvent::kDataSize)

  1228.                         {

  1229.                             event->midi.dataExt = data;

  1230.                             std::memset(event->midi.data, 0, sizeof(uint8_t)*EngineMidiEvent::kDataSize);

  1231.                         }

  1232.                         else

  1233.                         {

  1234.                             event->midi.data[0] = MIDI_GET_STATUS_FROM_DATA(data);

  1235. 

  1236.                             uint8_t i=1;

  1237.                             for (; i < size; ++i)

  1238.                                 event->midi.data[i] = data[i];

  1239.                             for (; i < EngineMidiEvent::kDataSize; ++i)

  1240.                                 event->midi.data[i] = 0;

  1241. 

  1242.                             event->midi.dataExt = nullptr;

  1243.                         }

  1244.                     }

  1245.                     break;

  1246.                 }

  1247. 

  1248.                 case kPluginBridgeRtClientProcess: {

  1249.                     const uint32_t frames(fShmRtClientControl.readUInt());

  1250. 

  1251.                     CARLA_SAFE_ASSERT_BREAK(fShmAudioPool.data != nullptr);

  1252. 

  1253.                     if (plugin != nullptr && plugin->isEnabled() && plugin->tryLock(fIsOffline))

  1254.                     {

  1255.                         const BridgeTimeInfo& bridgeTimeInfo(fShmRtClientControl.data->timeInfo);

  1256. 

  1257.                         const uint32_t audioInCount(plugin->getAudioInCount());

  1258.                         const uint32_t audioOutCount(plugin->getAudioOutCount());

  1259.                         const uint32_t cvInCount(plugin->getCVInCount());

  1260.                         const uint32_t cvOutCount(plugin->getCVOutCount());

  1261. 

  1262.                         const float* audioIn[audioInCount];

  1263.                         /* */ float* audioOut[audioOutCount];

  1264.                         const float* cvIn[cvInCount];

  1265.                         /* */ float* cvOut[cvOutCount];

  1266. 

  1267.                         float* fdata = fShmAudioPool.data;

  1268. 

  1269.                         for (uint32_t i=0; i < audioInCount; ++i, fdata += pData->bufferSize)

  1270.                             audioIn[i] = fdata;

  1271.                         for (uint32_t i=0; i < audioOutCount; ++i, fdata += pData->bufferSize)

  1272.                             audioOut[i] = fdata;

  1273. 

  1274.                         for (uint32_t i=0; i < cvInCount; ++i, fdata += pData->bufferSize)

  1275.                             cvIn[i] = fdata;

  1276.                         for (uint32_t i=0; i < cvOutCount; ++i, fdata += pData->bufferSize)

  1277.                             cvOut[i] = fdata;

  1278. 

  1279.                         EngineTimeInfo& timeInfo(pData->timeInfo);

  1280. 

  1281.                         timeInfo.playing   = bridgeTimeInfo.playing;

  1282.                         timeInfo.frame     = bridgeTimeInfo.frame;

  1283.                         timeInfo.usecs     = bridgeTimeInfo.usecs;

  1284.                         timeInfo.bbt.valid = (bridgeTimeInfo.validFlags & kPluginBridgeTimeInfoValidBBT) != 0;

  1285. 

  1286.                         if (timeInfo.bbt.valid)

  1287.                         {

  1288.                             timeInfo.bbt.bar  = bridgeTimeInfo.bar;

  1289.                             timeInfo.bbt.beat = bridgeTimeInfo.beat;

  1290.                             timeInfo.bbt.tick = bridgeTimeInfo.tick;

  1291. 

  1292.                             timeInfo.bbt.beatsPerBar = bridgeTimeInfo.beatsPerBar;

  1293.                             timeInfo.bbt.beatType    = bridgeTimeInfo.beatType;

  1294. 

  1295.                             timeInfo.bbt.ticksPerBeat   = bridgeTimeInfo.ticksPerBeat;

  1296.                             timeInfo.bbt.beatsPerMinute = bridgeTimeInfo.beatsPerMinute;

  1297.                             timeInfo.bbt.barStartTick   = bridgeTimeInfo.barStartTick;

  1298.                         }

  1299. 

  1300.                         plugin->initBuffers();

  1301.                         plugin->process(audioIn, audioOut, cvIn, cvOut, frames);

  1302.                         plugin->unlock();

  1303.                     }

  1304. 

  1305.                     uint8_t* midiData(fShmRtClientControl.data->midiOut);

  1306.                     carla_zeroBytes(midiData, kBridgeBaseMidiOutHeaderSize);

  1307.                     std::size_t curMidiDataPos = 0;

  1308. 

  1309.                     if (pData->events.in[0].type != kEngineEventTypeNull)

  1310.                         carla_zeroStructs(pData->events.in, kMaxEngineEventInternalCount);

  1311. 

  1312.                     if (pData->events.out[0].type != kEngineEventTypeNull)

  1313.                     {

  1314.                         for (ushort i=0; i < kMaxEngineEventInternalCount; ++i)

  1315.                         {

  1316.                             const EngineEvent& event(pData->events.out[i]);

  1317. 

  1318.                             if (event.type == kEngineEventTypeNull)

  1319.                                 break;

  1320. 

  1321.                             if (event.type == kEngineEventTypeControl)

  1322.                             {

  1323.                                 uint8_t data[3];

  1324.                                 const uint8_t size = event.ctrl.convertToMidiData(event.channel, data);

  1325.                                 CARLA_SAFE_ASSERT_CONTINUE(size > 0 && size <= 3);

  1326. 

  1327.                                 if (curMidiDataPos + kBridgeBaseMidiOutHeaderSize + size >= kBridgeRtClientDataMidiOutSize)

  1328.                                     break;

  1329. 

  1330.                                 // set time

  1331.                                 *(uint32_t*)midiData = event.time;

  1332.                                 midiData = midiData + 4;

  1333.                                 curMidiDataPos += 4;

  1334. 

  1335.                                 // set port

  1336.                                 *midiData++ = 0;

  1337.                                 ++curMidiDataPos;

  1338. 

  1339.                                 // set size

  1340.                                 *midiData++ = size;

  1341.                                 ++curMidiDataPos;

  1342. 

  1343.                                 // set data

  1344.                                 for (uint8_t j=0; j<size; ++j)

  1345.                                     *midiData++ = data[j];

  1346. 

  1347.                                 curMidiDataPos += size;

  1348.                             }

  1349.                             else if (event.type == kEngineEventTypeMidi)

  1350.                             {

  1351.                                 const EngineMidiEvent& _midiEvent(event.midi);

  1352. 

  1353.                                 if (curMidiDataPos + kBridgeBaseMidiOutHeaderSize + _midiEvent.size >= kBridgeRtClientDataMidiOutSize)

  1354.                                     break;

  1355. 

  1356.                                 const uint8_t* const _midiData(_midiEvent.dataExt != nullptr ? _midiEvent.dataExt : _midiEvent.data);

  1357. 

  1358.                                 // set time

  1359.                                 *(uint32_t*)midiData = event.time;

  1360.                                 midiData += 4;

  1361.                                 curMidiDataPos += 4;

  1362. 

  1363.                                 // set port

  1364.                                 *midiData++ = _midiEvent.port;

  1365.                                 ++curMidiDataPos;

  1366. 

  1367.                                 // set size

  1368.                                 *midiData++ = _midiEvent.size;

  1369.                                 ++curMidiDataPos;

  1370. 

  1371.                                 // set data

  1372.                                 *midiData++ = uint8_t(_midiData[0] | (event.channel & MIDI_CHANNEL_BIT));

  1373. 

  1374.                                 for (uint8_t j=1; j<_midiEvent.size; ++j)

  1375.                                     *midiData++ = _midiData[j];

  1376. 

  1377.                                 curMidiDataPos += _midiEvent.size;

  1378.                             }

  1379.                         }

  1380. 

  1381.                         if (curMidiDataPos != 0 &&

  1382.                             curMidiDataPos + kBridgeBaseMidiOutHeaderSize < kBridgeRtClientDataMidiOutSize)

  1383.                             carla_zeroBytes(midiData, kBridgeBaseMidiOutHeaderSize);

  1384. 

  1385.                         carla_zeroStructs(pData->events.out, kMaxEngineEventInternalCount);

  1386.                     }

  1387. 

  1388.                 }   break;

  1389. 

  1390.                 case kPluginBridgeRtClientQuit: {

  1391.                     quitReceived = true;

  1392.                     fClosingDown = true;

  1393.                     signalThreadShouldExit();

  1394.                 }   break;

  1395.                 }

  1396.             }

  1397.         }

  1398. 

  1399.         callback(true, true, ENGINE_CALLBACK_ENGINE_STOPPED, 0, 0, 0, 0, 0.0f, nullptr);

  1400. 

  1401.         if (! quitReceived)

  1402.         {

  1403.             const char* const message("Plugin bridge error, process thread has stopped");

  1404.             const std::size_t messageSize(std::strlen(message));

  1405. 

  1406.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1407.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerError);

  1408.             fShmNonRtServerControl.writeUInt(messageSize);

  1409.             fShmNonRtServerControl.writeCustomData(message, messageSize);

  1410.             fShmNonRtServerControl.commitWrite();

  1411.         }

  1412.     }

  1413. 

  1414.     // called from process thread above

  1415.     EngineEvent* getNextFreeInputEvent() const noexcept

  1416.     {

  1417.         for (ushort i=0; i < kMaxEngineEventInternalCount; ++i)

  1418.         {

  1419.             EngineEvent* const event(&pData->events.in[i]);

  1420. 

  1421.             if (event->type == kEngineEventTypeNull)

  1422.                 return event;

  1423.         }

  1424.         return nullptr;

  1425.     }

  1426. 

  1427.     void latencyChanged(const uint32_t samples) noexcept override

  1428.     {

  1429.         const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1430. 

  1431.         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetLatency);

  1432.         fShmNonRtServerControl.writeUInt(samples);

  1433.         fShmNonRtServerControl.commitWrite();

  1434.     }

  1435. 

  1436.     // -------------------------------------------------------------------

  1437. 

  1438. private:

  1439.     BridgeAudioPool          fShmAudioPool;

  1440.     BridgeRtClientControl    fShmRtClientControl;

  1441.     BridgeNonRtClientControl fShmNonRtClientControl;

  1442.     BridgeNonRtServerControl fShmNonRtServerControl;

  1443. 

  1444.     CarlaString fBaseNameAudioPool;

  1445.     CarlaString fBaseNameRtClientControl;

  1446.     CarlaString fBaseNameNonRtClientControl;

  1447.     CarlaString fBaseNameNonRtServerControl;

  1448. 

  1449.     bool fClosingDown;

  1450.     bool fIsOffline;

  1451.     bool fFirstIdle;

  1452.     int64_t fLastPingTime;

  1453. 

  1454.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CarlaEngineBridge)

  1455. };

  1456. 

  1457. // -----------------------------------------------------------------------

  1458. 

  1459. CarlaEngine* CarlaEngine::newBridge(const char* const audioPoolBaseName, const char* const rtClientBaseName, const char* const nonRtClientBaseName, const char* const nonRtServerBaseName)

  1460. {

  1461.     return new CarlaEngineBridge(audioPoolBaseName, rtClientBaseName, nonRtClientBaseName, nonRtServerBaseName);

  1462. }

  1463. 

  1464. // -----------------------------------------------------------------------

  1465. 

  1466. CARLA_BACKEND_END_NAMESPACE

  1467. 

  1468. // -----------------------------------------------------------------------

  1469. 

  1470. #include "CarlaBridgeUtils.cpp"

  1471. 

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