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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.     CarlaEngineClient* addClient(CarlaPlugin* const) override

  260.     {

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

  262.     }

  263. 

  264.     void idle() noexcept override

  265.     {

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

  267. 

  268.         if (plugin == nullptr)

  269.         {

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

  271.             {

  272.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  273.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerError);

  274.                 fShmNonRtServerControl.writeUInt(length);

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

  276.                 fShmNonRtServerControl.commitWrite();

  277.             }

  278. 

  279.             signalThreadShouldExit();

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

  281.             return;

  282.         }

  283. 

  284.         const bool wasFirstIdle(fFirstIdle);

  285. 

  286.         if (wasFirstIdle)

  287.         {

  288.             fFirstIdle = false;

  289.             fLastPingTime = Time::currentTimeMillis();

  290.             CARLA_SAFE_ASSERT(fLastPingTime > 0);

  291. 

  292.             char bufStr[STR_MAX+1];

  293.             uint32_t bufStrSize;

  294. 

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

  296.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  297. 

  298.             // kPluginBridgeNonRtServerPluginInfo1

  299.             {

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

  301.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPluginInfo1);

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

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

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

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

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

  307.                 fShmNonRtServerControl.commitWrite();

  308.             }

  309. 

  310.             // kPluginBridgeNonRtServerPluginInfo2

  311.             {

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

  313.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPluginInfo2);

  314. 

  315.                 carla_zeroChars(bufStr, STR_MAX);

  316.                 plugin->getRealName(bufStr);

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

  318.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  319.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  320. 

  321.                 carla_zeroChars(bufStr, STR_MAX);

  322.                 plugin->getLabel(bufStr);

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

  324.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  325.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  326. 

  327.                 carla_zeroChars(bufStr, STR_MAX);

  328.                 plugin->getMaker(bufStr);

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

  330.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  331.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  332. 

  333.                 carla_zeroChars(bufStr, STR_MAX);

  334.                 plugin->getCopyright(bufStr);

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

  336.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  337.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  338. 

  339.                 fShmNonRtServerControl.commitWrite();

  340.             }

  341. 

  342.             // kPluginBridgeNonRtServerAudioCount

  343.             {

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

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

  346. 

  347.                 // uint/ins, uint/outs

  348.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerAudioCount);

  349.                 fShmNonRtServerControl.writeUInt(aIns);

  350.                 fShmNonRtServerControl.writeUInt(aOuts);

  351.                 fShmNonRtServerControl.commitWrite();

  352. 

  353.                 // kPluginBridgeNonRtServerPortName

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

  355.                 {

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

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

  358. 

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

  360.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPortName);

  361.                     fShmNonRtServerControl.writeByte(kPluginBridgePortAudioInput);

  362.                     fShmNonRtServerControl.writeUInt(i);

  363. 

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

  365.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  366.                     fShmNonRtServerControl.writeCustomData(portName, bufStrSize);

  367.                 }

  368. 

  369.                 // kPluginBridgeNonRtServerPortName

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

  371.                 {

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

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

  374. 

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

  376.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPortName);

  377.                     fShmNonRtServerControl.writeByte(kPluginBridgePortAudioOutput);

  378.                     fShmNonRtServerControl.writeUInt(i);

  379. 

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

  381.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  382.                     fShmNonRtServerControl.writeCustomData(portName, bufStrSize);

  383.                 }

  384.             }

  385. 

  386.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  387. 

  388.             // kPluginBridgeNonRtServerMidiCount

  389.             {

  390.                 // uint/ins, uint/outs

  391.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiCount);

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

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

  394.                 fShmNonRtServerControl.commitWrite();

  395.             }

  396. 

  397.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  398. 

  399.             // kPluginBridgeNonRtServerCvCount

  400.             {

  401.                 // uint/ins, uint/outs

  402.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCvCount);

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

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

  405.                 fShmNonRtServerControl.commitWrite();

  406.             }

  407. 

  408.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  409. 

  410.             // kPluginBridgeNonRtServerParameter*

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

  412.             {

  413.                 // uint/count

  414.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterCount);

  415.                 fShmNonRtServerControl.writeUInt(count);

  416.                 fShmNonRtServerControl.commitWrite();

  417. 

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

  419.                 {

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

  421. 

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

  423.                         continue;

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

  425.                         continue;

  426. 

  427.                     // kPluginBridgeNonRtServerParameterData1

  428.                     {

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

  430.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterData1);

  431.                         fShmNonRtServerControl.writeUInt(i);

  432.                         fShmNonRtServerControl.writeInt(paramData.rindex);

  433.                         fShmNonRtServerControl.writeUInt(paramData.type);

  434.                         fShmNonRtServerControl.writeUInt(paramData.hints);

  435.                         fShmNonRtServerControl.writeShort(paramData.midiCC);

  436.                         fShmNonRtServerControl.commitWrite();

  437.                     }

  438. 

  439.                     // kPluginBridgeNonRtServerParameterData2

  440.                     {

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

  442.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterData2);

  443.                         fShmNonRtServerControl.writeUInt(i);

  444. 

  445.                         carla_zeroChars(bufStr, STR_MAX);

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

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

  448.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  449.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  450. 

  451.                         carla_zeroChars(bufStr, STR_MAX);

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

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

  454.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  455.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  456. 

  457.                         carla_zeroChars(bufStr, STR_MAX);

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

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

  460.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  461.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  462. 

  463.                         fShmNonRtServerControl.commitWrite();

  464.                     }

  465. 

  466.                     // kPluginBridgeNonRtServerParameterRanges

  467.                     {

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

  469. 

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

  471.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterRanges);

  472.                         fShmNonRtServerControl.writeUInt(i);

  473.                         fShmNonRtServerControl.writeFloat(paramRanges.def);

  474.                         fShmNonRtServerControl.writeFloat(paramRanges.min);

  475.                         fShmNonRtServerControl.writeFloat(paramRanges.max);

  476.                         fShmNonRtServerControl.writeFloat(paramRanges.step);

  477.                         fShmNonRtServerControl.writeFloat(paramRanges.stepSmall);

  478.                         fShmNonRtServerControl.writeFloat(paramRanges.stepLarge);

  479.                         fShmNonRtServerControl.commitWrite();

  480.                     }

  481. 

  482.                     // kPluginBridgeNonRtServerParameterValue2

  483.                     {

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

  485.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue2);

  486.                         fShmNonRtServerControl.writeUInt(i);

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

  488.                         fShmNonRtServerControl.commitWrite();

  489.                     }

  490. 

  491.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  492.                 }

  493.             }

  494. 

  495.             // kPluginBridgeNonRtServerProgram*

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

  497.             {

  498.                 // uint/count

  499.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerProgramCount);

  500.                 fShmNonRtServerControl.writeUInt(count);

  501.                 fShmNonRtServerControl.commitWrite();

  502. 

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

  504.                 {

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

  506.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerProgramName);

  507.                     fShmNonRtServerControl.writeUInt(i);

  508. 

  509.                     carla_zeroChars(bufStr, STR_MAX);

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

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

  512.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  513.                     fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  514. 

  515.                     fShmNonRtServerControl.commitWrite();

  516.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  517.                 }

  518.             }

  519. 

  520.             // kPluginBridgeNonRtServerMidiProgram*

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

  522.             {

  523.                 // uint/count

  524.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiProgramCount);

  525.                 fShmNonRtServerControl.writeUInt(count);

  526.                 fShmNonRtServerControl.commitWrite();

  527. 

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

  529.                 {

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

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

  532. 

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

  534.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiProgramData);

  535.                     fShmNonRtServerControl.writeUInt(i);

  536.                     fShmNonRtServerControl.writeUInt(mpData.bank);

  537.                     fShmNonRtServerControl.writeUInt(mpData.program);

  538. 

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

  540.                     fShmNonRtServerControl.writeUInt(bufStrSize);

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

  542. 

  543.                     fShmNonRtServerControl.commitWrite();

  544.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  545.                 }

  546.             }

  547. 

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

  549.             {

  550.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetLatency);

  551.                 fShmNonRtServerControl.writeUInt(latency);

  552.                 fShmNonRtServerControl.commitWrite();

  553.             }

  554. 

  555.             // ready!

  556.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerReady);

  557.             fShmNonRtServerControl.commitWrite();

  558.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  559. 

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

  561.             fLastPingTime = Time::currentTimeMillis();

  562.         }

  563. 

  564.         // send parameter outputs

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

  566.         {

  567.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  568. 

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

  570.             {

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

  572.                     continue;

  573. 

  574.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue2);

  575.                 fShmNonRtServerControl.writeUInt(i);

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

  577. 

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

  579.                 if (! fShmNonRtServerControl.commitWrite())

  580.                     break;

  581.             }

  582.         }

  583. 

  584.         CarlaEngine::idle();

  585. 

  586.         try {

  587.             handleNonRtData();

  588.         } CARLA_SAFE_EXCEPTION("handleNonRtData");

  589. 

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

  591.         {

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

  593.             signalThreadShouldExit();

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

  595.         }

  596.     }

  597. 

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

  599.                   const EngineCallbackOpcode action, const uint pluginId,

  600.                   const int value1, const int value2, const int value3,

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

  602.     {

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

  604. 

  605.         if (fClosingDown)

  606.             return;

  607. 

  608.         switch (action)

  609.         {

  610.         // uint/index float/value

  611.         case ENGINE_CALLBACK_PARAMETER_VALUE_CHANGED: {

  612.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  613.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  614.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue);

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

  616.             fShmNonRtServerControl.writeFloat(valuef);

  617.             fShmNonRtServerControl.commitWrite();

  618.         }   break;

  619. 

  620.         // uint/index float/value

  621.         case ENGINE_CALLBACK_PARAMETER_DEFAULT_CHANGED: {

  622.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  623.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  624.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerDefaultValue);

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

  626.             fShmNonRtServerControl.writeFloat(valuef);

  627.             fShmNonRtServerControl.commitWrite();

  628.         }   break;

  629. 

  630.         // int/index

  631.         case ENGINE_CALLBACK_PROGRAM_CHANGED: {

  632.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  633.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  634.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCurrentProgram);

  635.             fShmNonRtServerControl.writeInt(value1);

  636.             fShmNonRtServerControl.commitWrite();

  637.         }   break;

  638. 

  639.         // int/index

  640.         case ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED: {

  641.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  642.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  643.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCurrentMidiProgram);

  644.             fShmNonRtServerControl.writeInt(value1);

  645.             fShmNonRtServerControl.commitWrite();

  646.         }   break;

  647. 

  648.         case ENGINE_CALLBACK_UI_STATE_CHANGED:

  649.             if (value1 != 1)

  650.             {

  651.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  652.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerUiClosed);

  653.                 fShmNonRtServerControl.commitWrite();

  654.             }

  655.             break;

  656. 

  657.         case ENGINE_CALLBACK_RELOAD_PARAMETERS:

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

  659.             {

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

  661.                 {

  662.                     const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  663. 

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

  665.                     {

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

  667. 

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

  669.                             continue;

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

  671.                             continue;

  672. 

  673.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue);

  674.                         fShmNonRtServerControl.writeUInt(i);

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

  676.                         fShmNonRtServerControl.commitWrite();

  677. 

  678.                         fShmNonRtServerControl.waitIfDataIsReachingLimit();

  679.                     }

  680.                 }

  681.             }

  682.             break;

  683. 

  684.         default:

  685.             break;

  686.         }

  687.     }

  688. 

  689.     // -------------------------------------------------------------------

  690. 

  691.     void clear() noexcept

  692.     {

  693.         fShmAudioPool.clear();

  694.         fShmRtClientControl.clear();

  695.         fShmNonRtClientControl.clear();

  696.         fShmNonRtServerControl.clear();

  697.     }

  698. 

  699.     void handleNonRtData()

  700.     {

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

  702.         CARLA_SAFE_ASSERT_RETURN(plugin != nullptr,);

  703. 

  704.         for (; fShmNonRtClientControl.isDataAvailableForReading();)

  705.         {

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

  707. 

  708. #ifdef DEBUG

  709.             if (opcode != kPluginBridgeNonRtClientPing) {

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

  711.             }

  712. #endif

  713. 

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

  715.                 fLastPingTime = Time::currentTimeMillis();

  716. 

  717.             switch (opcode)

  718.             {

  719.             case kPluginBridgeNonRtClientNull:

  720.                 break;

  721. 

  722.             case kPluginBridgeNonRtClientVersion: {

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

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

  725.             }   break;

  726. 

  727.             case kPluginBridgeNonRtClientPing: {

  728.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  729. 

  730.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPong);

  731.                 fShmNonRtServerControl.commitWrite();

  732.             }   break;

  733. 

  734.             case kPluginBridgeNonRtClientPingOnOff: {

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

  736. 

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

  738.             }   break;

  739. 

  740.             case kPluginBridgeNonRtClientActivate:

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

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

  743.                 break;

  744. 

  745.             case kPluginBridgeNonRtClientDeactivate:

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

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

  748.                 break;

  749. 

  750.             case kPluginBridgeNonRtClientInitialSetup:

  751.                 // should never happen!!

  752.                 fShmNonRtServerControl.readUInt();

  753.                 fShmNonRtServerControl.readDouble();

  754.                 break;

  755. 

  756.             case kPluginBridgeNonRtClientSetParameterValue: {

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

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

  759. 

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

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

  762.                 break;

  763.             }

  764. 

  765.             case kPluginBridgeNonRtClientSetParameterMidiChannel: {

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

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

  768. 

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

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

  771.                 break;

  772.             }

  773. 

  774.             case kPluginBridgeNonRtClientSetParameterMidiCC: {

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

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

  777. 

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

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

  780.                 break;

  781.             }

  782. 

  783.             case kPluginBridgeNonRtClientSetProgram: {

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

  785. 

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

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

  788.                 break;

  789.             }

  790. 

  791.             case kPluginBridgeNonRtClientSetMidiProgram: {

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

  793. 

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

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

  796.                 break;

  797.             }

  798. 

  799.             case kPluginBridgeNonRtClientSetCustomData: {

  800.                 // type

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

  802.                 char typeStr[typeSize+1];

  803.                 carla_zeroChars(typeStr, typeSize+1);

  804.                 fShmNonRtClientControl.readCustomData(typeStr, typeSize);

  805. 

  806.                 // key

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

  808.                 char keyStr[keySize+1];

  809.                 carla_zeroChars(keyStr, keySize+1);

  810.                 fShmNonRtClientControl.readCustomData(keyStr, keySize);

  811. 

  812.                 // value

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

  814.                 char valueStr[valueSize+1];

  815.                 carla_zeroChars(valueStr, valueSize+1);

  816. 

  817.                 if (valueSize > 0)

  818.                     fShmNonRtClientControl.readCustomData(valueStr, valueSize);

  819. 

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

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

  822.                 break;

  823.             }

  824. 

  825.             case kPluginBridgeNonRtClientSetChunkDataFile: {

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

  827.                 CARLA_SAFE_ASSERT_BREAK(size > 0);

  828. 

  829.                 char chunkFilePathTry[size+1];

  830.                 carla_zeroChars(chunkFilePathTry, size+1);

  831.                 fShmNonRtClientControl.readCustomData(chunkFilePathTry, size);

  832. 

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

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

  835. 

  836.                 String chunkFilePath(chunkFilePathTry);

  837. 

  838. #ifdef CARLA_OS_WIN

  839.                 // check if running under Wine

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

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

  842. #endif

  843. 

  844.                 File chunkFile(chunkFilePath);

  845.                 CARLA_SAFE_ASSERT_BREAK(chunkFile.existsAsFile());

  846. 

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

  848.                 chunkFile.deleteFile();

  849.                 CARLA_SAFE_ASSERT_BREAK(chunkDataBase64.isNotEmpty());

  850. 

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

  852. 

  853. #ifdef CARLA_PROPER_CPP11_SUPPORT

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

  855. #else

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

  857. #endif

  858.                 break;

  859.             }

  860. 

  861.             case kPluginBridgeNonRtClientSetCtrlChannel: {

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

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

  864. 

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

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

  867.                 break;

  868.             }

  869. 

  870.             case kPluginBridgeNonRtClientSetOption: {

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

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

  873. 

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

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

  876.                 break;

  877.             }

  878. 

  879.             case kPluginBridgeNonRtClientGetParameterText: {

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

  881. 

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

  883.                 {

  884.                     char strBuf[STR_MAX];

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

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

  887. 

  888.                     const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  889. 

  890.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetParameterText);

  891. 

  892.                     fShmNonRtServerControl.writeInt(index);

  893.                     fShmNonRtServerControl.writeUInt(strBufLen);

  894.                     fShmNonRtServerControl.writeCustomData(strBuf, strBufLen);

  895.                     fShmNonRtServerControl.commitWrite();

  896. 

  897.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  898.                 }

  899. 

  900.                 break;

  901.             }

  902. 

  903.             case kPluginBridgeNonRtClientPrepareForSave: {

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

  905.                     break;

  906. 

  907.                 plugin->prepareForSave();

  908. 

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

  910.                 {

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

  912. 

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

  914.                         continue;

  915. 

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

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

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

  919. 

  920.                     {

  921.                         const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  922. 

  923.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetCustomData);

  924. 

  925.                         fShmNonRtServerControl.writeUInt(typeLen);

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

  927. 

  928.                         fShmNonRtServerControl.writeUInt(keyLen);

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

  930. 

  931.                         fShmNonRtServerControl.writeUInt(valueLen);

  932. 

  933.                         if (valueLen > 0)

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

  935. 

  936.                         fShmNonRtServerControl.commitWrite();

  937.                         fShmNonRtServerControl.waitIfDataIsReachingLimit();

  938.                     }

  939.                 }

  940. 

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

  942.                 {

  943.                     void* data = nullptr;

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

  945.                     {

  946.                         CARLA_SAFE_ASSERT_BREAK(data != nullptr);

  947. 

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

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

  950. 

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

  952. 

  953.                         filePath += CARLA_OS_SEP_STR ".CarlaChunk_";

  954.                         filePath += fShmAudioPool.getFilenameSuffix();

  955. 

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

  957.                         {

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

  959. 

  960.                             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  961. 

  962.                             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetChunkDataFile);

  963.                             fShmNonRtServerControl.writeUInt(ulength);

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

  965.                             fShmNonRtServerControl.commitWrite();

  966.                         }

  967.                     }

  968.                 }

  969. 

  970.                 {

  971.                     const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  972. 

  973.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSaved);

  974.                     fShmNonRtServerControl.commitWrite();

  975.                 }

  976.                 break;

  977.             }

  978. 

  979.             case kPluginBridgeNonRtClientRestoreLV2State:

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

  981.                     plugin->restoreLV2State();

  982.                 break;

  983. 

  984.             case kPluginBridgeNonRtClientShowUI:

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

  986.                     plugin->showCustomUI(true);

  987.                 break;

  988. 

  989.             case kPluginBridgeNonRtClientHideUI:

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

  991.                     plugin->showCustomUI(false);

  992.                 break;

  993. 

  994.             case kPluginBridgeNonRtClientUiParameterChange: {

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

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

  997. 

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

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

  1000.                 break;

  1001.             }

  1002. 

  1003.             case kPluginBridgeNonRtClientUiProgramChange: {

  1004.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1005. 

  1006.                 if (plugin != nullptr && plugin->isEnabled())

  1007.                     plugin->uiProgramChange(index);

  1008.                 break;

  1009.             }

  1010. 

  1011.             case kPluginBridgeNonRtClientUiMidiProgramChange: {

  1012.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1013. 

  1014.                 if (plugin != nullptr && plugin->isEnabled())

  1015.                     plugin->uiMidiProgramChange(index);

  1016.                 break;

  1017.             }

  1018. 

  1019.             case kPluginBridgeNonRtClientUiNoteOn: {

  1020.                 const uint8_t chnl(fShmNonRtClientControl.readByte());

  1021.                 const uint8_t note(fShmNonRtClientControl.readByte());

  1022.                 const uint8_t velo(fShmNonRtClientControl.readByte());

  1023. 

  1024.                 if (plugin != nullptr && plugin->isEnabled())

  1025.                     plugin->uiNoteOn(chnl, note, velo);

  1026.                 break;

  1027.             }

  1028. 

  1029.             case kPluginBridgeNonRtClientUiNoteOff: {

  1030.                 const uint8_t chnl(fShmNonRtClientControl.readByte());

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

  1032. 

  1033.                 if (plugin != nullptr && plugin->isEnabled())

  1034.                     plugin->uiNoteOff(chnl, note);

  1035.                 break;

  1036.             }

  1037. 

  1038.             case kPluginBridgeNonRtClientQuit:

  1039.                 fClosingDown = true;

  1040.                 signalThreadShouldExit();

  1041.                 callback(true, true, ENGINE_CALLBACK_QUIT, 0, 0, 0, 0, 0.0f, nullptr);

  1042.                 break;

  1043.             }

  1044.         }

  1045.     }

  1046. 

  1047.     // -------------------------------------------------------------------

  1048. 

  1049. protected:

  1050.     void run() override

  1051.     {

  1052. #ifdef __SSE2_MATH__

  1053.         // Set FTZ and DAZ flags

  1054.         _mm_setcsr(_mm_getcsr() | 0x8040);

  1055. #endif

  1056. 

  1057.         bool quitReceived = false;

  1058. 

  1059.         for (; ! shouldThreadExit();)

  1060.         {

  1061.             const BridgeRtClientControl::WaitHelper helper(fShmRtClientControl);

  1062. 

  1063.             if (! helper.ok)

  1064.                 continue;

  1065. 

  1066.             for (; fShmRtClientControl.isDataAvailableForReading();)

  1067.             {

  1068.                 const PluginBridgeRtClientOpcode opcode(fShmRtClientControl.readOpcode());

  1069.                 CarlaPlugin* const plugin(pData->plugins[0].plugin);

  1070. 

  1071. #ifdef DEBUG

  1072.                 if (opcode != kPluginBridgeRtClientProcess && opcode != kPluginBridgeRtClientMidiEvent) {

  1073.                     carla_debug("CarlaEngineBridgeRtThread::run() - got opcode: %s", PluginBridgeRtClientOpcode2str(opcode));

  1074.                 }

  1075. #endif

  1076. 

  1077.                 switch (opcode)

  1078.                 {

  1079.                 case kPluginBridgeRtClientNull:

  1080.                     break;

  1081. 

  1082.                 case kPluginBridgeRtClientSetAudioPool: {

  1083.                     if (fShmAudioPool.data != nullptr)

  1084.                     {

  1085.                         jackbridge_shm_unmap(fShmAudioPool.shm, fShmAudioPool.data);

  1086.                         fShmAudioPool.data = nullptr;

  1087.                     }

  1088.                     const uint64_t poolSize(fShmRtClientControl.readULong());

  1089.                     CARLA_SAFE_ASSERT_BREAK(poolSize > 0);

  1090.                     fShmAudioPool.data = (float*)jackbridge_shm_map(fShmAudioPool.shm, static_cast<size_t>(poolSize));

  1091.                     break;

  1092.                 }

  1093. 

  1094.                 case kPluginBridgeRtClientSetBufferSize: {

  1095.                     const uint32_t bufferSize(fShmRtClientControl.readUInt());

  1096.                     pData->bufferSize = bufferSize;

  1097.                     bufferSizeChanged(bufferSize);

  1098.                     break;

  1099.                 }

  1100. 

  1101.                 case kPluginBridgeRtClientSetSampleRate: {

  1102.                     const double sampleRate(fShmRtClientControl.readDouble());

  1103.                     pData->sampleRate = sampleRate;

  1104.                     sampleRateChanged(sampleRate);

  1105.                     break;

  1106.                 }

  1107. 

  1108.                 case kPluginBridgeRtClientSetOnline:

  1109.                     fIsOffline = fShmRtClientControl.readBool();

  1110.                     offlineModeChanged(fIsOffline);

  1111.                     break;

  1112. 

  1113.                 case kPluginBridgeRtClientControlEventParameter: {

  1114.                     const uint32_t time(fShmRtClientControl.readUInt());

  1115.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1116.                     const uint16_t param(fShmRtClientControl.readUShort());

  1117.                     const float    value(fShmRtClientControl.readFloat());

  1118. 

  1119.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1120.                     {

  1121.                         event->type    = kEngineEventTypeControl;

  1122.                         event->time    = time;

  1123.                         event->channel = channel;

  1124.                         event->ctrl.type  = kEngineControlEventTypeParameter;

  1125.                         event->ctrl.param = param;

  1126.                         event->ctrl.value = value;

  1127.                     }

  1128.                     break;

  1129.                 }

  1130. 

  1131.                 case kPluginBridgeRtClientControlEventMidiBank: {

  1132.                     const uint32_t time(fShmRtClientControl.readUInt());

  1133.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1134.                     const uint16_t index(fShmRtClientControl.readUShort());

  1135. 

  1136.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1137.                     {

  1138.                         event->type    = kEngineEventTypeControl;

  1139.                         event->time    = time;

  1140.                         event->channel = channel;

  1141.                         event->ctrl.type  = kEngineControlEventTypeMidiBank;

  1142.                         event->ctrl.param = index;

  1143.                         event->ctrl.value = 0.0f;

  1144.                     }

  1145.                     break;

  1146.                 }

  1147. 

  1148.                 case kPluginBridgeRtClientControlEventMidiProgram: {

  1149.                     const uint32_t time(fShmRtClientControl.readUInt());

  1150.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1151.                     const uint16_t index(fShmRtClientControl.readUShort());

  1152. 

  1153.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1154.                     {

  1155.                         event->type    = kEngineEventTypeControl;

  1156.                         event->time    = time;

  1157.                         event->channel = channel;

  1158.                         event->ctrl.type  = kEngineControlEventTypeMidiProgram;

  1159.                         event->ctrl.param = index;

  1160.                         event->ctrl.value = 0.0f;

  1161.                     }

  1162.                     break;

  1163.                 }

  1164. 

  1165.                 case kPluginBridgeRtClientControlEventAllSoundOff: {

  1166.                     const uint32_t time(fShmRtClientControl.readUInt());

  1167.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1168. 

  1169.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1170.                     {

  1171.                         event->type    = kEngineEventTypeControl;

  1172.                         event->time    = time;

  1173.                         event->channel = channel;

  1174.                         event->ctrl.type  = kEngineControlEventTypeAllSoundOff;

  1175.                         event->ctrl.param = 0;

  1176.                         event->ctrl.value = 0.0f;

  1177.                     }

  1178.                 }   break;

  1179. 

  1180.                 case kPluginBridgeRtClientControlEventAllNotesOff: {

  1181.                     const uint32_t time(fShmRtClientControl.readUInt());

  1182.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1183. 

  1184.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1185.                     {

  1186.                         event->type    = kEngineEventTypeControl;

  1187.                         event->time    = time;

  1188.                         event->channel = channel;

  1189.                         event->ctrl.type  = kEngineControlEventTypeAllNotesOff;

  1190.                         event->ctrl.param = 0;

  1191.                         event->ctrl.value = 0.0f;

  1192.                     }

  1193.                 }   break;

  1194. 

  1195.                 case kPluginBridgeRtClientMidiEvent: {

  1196.                     const uint32_t time(fShmRtClientControl.readUInt());

  1197.                     const uint8_t  port(fShmRtClientControl.readByte());

  1198.                     const uint8_t  size(fShmRtClientControl.readByte());

  1199.                     CARLA_SAFE_ASSERT_BREAK(size > 0);

  1200. 

  1201.                     // FIXME variable-size stack

  1202.                     uint8_t data[size];

  1203. 

  1204.                     for (uint8_t i=0; i<size; ++i)

  1205.                         data[i] = fShmRtClientControl.readByte();

  1206. 

  1207.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1208.                     {

  1209.                         event->type    = kEngineEventTypeMidi;

  1210.                         event->time    = time;

  1211.                         event->channel = MIDI_GET_CHANNEL_FROM_DATA(data);

  1212. 

  1213.                         event->midi.port = port;

  1214.                         event->midi.size = size;

  1215. 

  1216.                         if (size > EngineMidiEvent::kDataSize)

  1217.                         {

  1218.                             event->midi.dataExt = data;

  1219.                             std::memset(event->midi.data, 0, sizeof(uint8_t)*EngineMidiEvent::kDataSize);

  1220.                         }

  1221.                         else

  1222.                         {

  1223.                             event->midi.data[0] = MIDI_GET_STATUS_FROM_DATA(data);

  1224. 

  1225.                             uint8_t i=1;

  1226.                             for (; i < size; ++i)

  1227.                                 event->midi.data[i] = data[i];

  1228.                             for (; i < EngineMidiEvent::kDataSize; ++i)

  1229.                                 event->midi.data[i] = 0;

  1230. 

  1231.                             event->midi.dataExt = nullptr;

  1232.                         }

  1233.                     }

  1234.                     break;

  1235.                 }

  1236. 

  1237.                 case kPluginBridgeRtClientProcess: {

  1238.                     const uint32_t frames(fShmRtClientControl.readUInt());

  1239. 

  1240.                     CARLA_SAFE_ASSERT_BREAK(fShmAudioPool.data != nullptr);

  1241. 

  1242.                     if (plugin != nullptr && plugin->isEnabled() && plugin->tryLock(fIsOffline))

  1243.                     {

  1244.                         const BridgeTimeInfo& bridgeTimeInfo(fShmRtClientControl.data->timeInfo);

  1245. 

  1246.                         const uint32_t audioInCount(plugin->getAudioInCount());

  1247.                         const uint32_t audioOutCount(plugin->getAudioOutCount());

  1248.                         const uint32_t cvInCount(plugin->getCVInCount());

  1249.                         const uint32_t cvOutCount(plugin->getCVOutCount());

  1250. 

  1251.                         const float* audioIn[audioInCount];

  1252.                         /* */ float* audioOut[audioOutCount];

  1253.                         const float* cvIn[cvInCount];

  1254.                         /* */ float* cvOut[cvOutCount];

  1255. 

  1256.                         float* fdata = fShmAudioPool.data;

  1257. 

  1258.                         for (uint32_t i=0; i < audioInCount; ++i, fdata += pData->bufferSize)

  1259.                             audioIn[i] = fdata;

  1260.                         for (uint32_t i=0; i < audioOutCount; ++i, fdata += pData->bufferSize)

  1261.                             audioOut[i] = fdata;

  1262. 

  1263.                         for (uint32_t i=0; i < cvInCount; ++i, fdata += pData->bufferSize)

  1264.                             cvIn[i] = fdata;

  1265.                         for (uint32_t i=0; i < cvOutCount; ++i, fdata += pData->bufferSize)

  1266.                             cvOut[i] = fdata;

  1267. 

  1268.                         EngineTimeInfo& timeInfo(pData->timeInfo);

  1269. 

  1270.                         timeInfo.playing   = bridgeTimeInfo.playing;

  1271.                         timeInfo.frame     = bridgeTimeInfo.frame;

  1272.                         timeInfo.usecs     = bridgeTimeInfo.usecs;

  1273.                         timeInfo.bbt.valid = (bridgeTimeInfo.validFlags & kPluginBridgeTimeInfoValidBBT) != 0;

  1274. 

  1275.                         if (timeInfo.bbt.valid)

  1276.                         {

  1277.                             timeInfo.bbt.bar  = bridgeTimeInfo.bar;

  1278.                             timeInfo.bbt.beat = bridgeTimeInfo.beat;

  1279.                             timeInfo.bbt.tick = bridgeTimeInfo.tick;

  1280. 

  1281.                             timeInfo.bbt.beatsPerBar = bridgeTimeInfo.beatsPerBar;

  1282.                             timeInfo.bbt.beatType    = bridgeTimeInfo.beatType;

  1283. 

  1284.                             timeInfo.bbt.ticksPerBeat   = bridgeTimeInfo.ticksPerBeat;

  1285.                             timeInfo.bbt.beatsPerMinute = bridgeTimeInfo.beatsPerMinute;

  1286.                             timeInfo.bbt.barStartTick   = bridgeTimeInfo.barStartTick;

  1287.                         }

  1288. 

  1289.                         plugin->initBuffers();

  1290.                         plugin->process(audioIn, audioOut, cvIn, cvOut, frames);

  1291.                         plugin->unlock();

  1292.                     }

  1293. 

  1294.                     uint8_t* midiData(fShmRtClientControl.data->midiOut);

  1295.                     carla_zeroBytes(midiData, kBridgeBaseMidiOutHeaderSize);

  1296.                     std::size_t curMidiDataPos = 0;

  1297. 

  1298.                     if (pData->events.in[0].type != kEngineEventTypeNull)

  1299.                         carla_zeroStructs(pData->events.in, kMaxEngineEventInternalCount);

  1300. 

  1301.                     if (pData->events.out[0].type != kEngineEventTypeNull)

  1302.                     {

  1303.                         for (ushort i=0; i < kMaxEngineEventInternalCount; ++i)

  1304.                         {

  1305.                             const EngineEvent& event(pData->events.out[i]);

  1306. 

  1307.                             if (event.type == kEngineEventTypeNull)

  1308.                                 break;

  1309. 

  1310.                             if (event.type == kEngineEventTypeControl)

  1311.                             {

  1312.                                 uint8_t data[3];

  1313.                                 const uint8_t size = event.ctrl.convertToMidiData(event.channel, data);

  1314.                                 CARLA_SAFE_ASSERT_CONTINUE(size > 0 && size <= 3);

  1315. 

  1316.                                 if (curMidiDataPos + kBridgeBaseMidiOutHeaderSize + size >= kBridgeRtClientDataMidiOutSize)

  1317.                                     break;

  1318. 

  1319.                                 // set time

  1320.                                 *(uint32_t*)midiData = event.time;

  1321.                                 midiData = midiData + 4;

  1322.                                 curMidiDataPos += 4;

  1323. 

  1324.                                 // set port

  1325.                                 *midiData++ = 0;

  1326.                                 ++curMidiDataPos;

  1327. 

  1328.                                 // set size

  1329.                                 *midiData++ = size;

  1330.                                 ++curMidiDataPos;

  1331. 

  1332.                                 // set data

  1333.                                 for (uint8_t j=0; j<size; ++j)

  1334.                                     *midiData++ = data[j];

  1335. 

  1336.                                 curMidiDataPos += size;

  1337.                             }

  1338.                             else if (event.type == kEngineEventTypeMidi)

  1339.                             {

  1340.                                 const EngineMidiEvent& _midiEvent(event.midi);

  1341. 

  1342.                                 if (curMidiDataPos + kBridgeBaseMidiOutHeaderSize + _midiEvent.size >= kBridgeRtClientDataMidiOutSize)

  1343.                                     break;

  1344. 

  1345.                                 const uint8_t* const _midiData(_midiEvent.dataExt != nullptr ? _midiEvent.dataExt : _midiEvent.data);

  1346. 

  1347.                                 // set time

  1348.                                 *(uint32_t*)midiData = event.time;

  1349.                                 midiData += 4;

  1350.                                 curMidiDataPos += 4;

  1351. 

  1352.                                 // set port

  1353.                                 *midiData++ = _midiEvent.port;

  1354.                                 ++curMidiDataPos;

  1355. 

  1356.                                 // set size

  1357.                                 *midiData++ = _midiEvent.size;

  1358.                                 ++curMidiDataPos;

  1359. 

  1360.                                 // set data

  1361.                                 *midiData++ = uint8_t(_midiData[0] | (event.channel & MIDI_CHANNEL_BIT));

  1362. 

  1363.                                 for (uint8_t j=1; j<_midiEvent.size; ++j)

  1364.                                     *midiData++ = _midiData[j];

  1365. 

  1366.                                 curMidiDataPos += _midiEvent.size;

  1367.                             }

  1368.                         }

  1369. 

  1370.                         if (curMidiDataPos != 0 &&

  1371.                             curMidiDataPos + kBridgeBaseMidiOutHeaderSize < kBridgeRtClientDataMidiOutSize)

  1372.                             carla_zeroBytes(midiData, kBridgeBaseMidiOutHeaderSize);

  1373. 

  1374.                         carla_zeroStructs(pData->events.out, kMaxEngineEventInternalCount);

  1375.                     }

  1376. 

  1377.                 }   break;

  1378. 

  1379.                 case kPluginBridgeRtClientQuit: {

  1380.                     quitReceived = true;

  1381.                     fClosingDown = true;

  1382.                     signalThreadShouldExit();

  1383.                 }   break;

  1384.                 }

  1385.             }

  1386.         }

  1387. 

  1388.         callback(true, true, ENGINE_CALLBACK_ENGINE_STOPPED, 0, 0, 0, 0, 0.0f, nullptr);

  1389. 

  1390.         if (! quitReceived)

  1391.         {

  1392.             const char* const message("Plugin bridge error, process thread has stopped");

  1393.             const std::size_t messageSize(std::strlen(message));

  1394. 

  1395.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1396.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerError);

  1397.             fShmNonRtServerControl.writeUInt(messageSize);

  1398.             fShmNonRtServerControl.writeCustomData(message, messageSize);

  1399.             fShmNonRtServerControl.commitWrite();

  1400.         }

  1401.     }

  1402. 

  1403.     // called from process thread above

  1404.     EngineEvent* getNextFreeInputEvent() const noexcept

  1405.     {

  1406.         for (ushort i=0; i < kMaxEngineEventInternalCount; ++i)

  1407.         {

  1408.             EngineEvent* const event(&pData->events.in[i]);

  1409. 

  1410.             if (event->type == kEngineEventTypeNull)

  1411.                 return event;

  1412.         }

  1413.         return nullptr;

  1414.     }

  1415. 

  1416.     void latencyChanged(const uint32_t samples) noexcept override

  1417.     {

  1418.         const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1419. 

  1420.         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetLatency);

  1421.         fShmNonRtServerControl.writeUInt(samples);

  1422.         fShmNonRtServerControl.commitWrite();

  1423.     }

  1424. 

  1425.     // -------------------------------------------------------------------

  1426. 

  1427. private:

  1428.     BridgeAudioPool          fShmAudioPool;

  1429.     BridgeRtClientControl    fShmRtClientControl;

  1430.     BridgeNonRtClientControl fShmNonRtClientControl;

  1431.     BridgeNonRtServerControl fShmNonRtServerControl;

  1432. 

  1433.     CarlaString fBaseNameAudioPool;

  1434.     CarlaString fBaseNameRtClientControl;

  1435.     CarlaString fBaseNameNonRtClientControl;

  1436.     CarlaString fBaseNameNonRtServerControl;

  1437. 

  1438.     bool fClosingDown;

  1439.     bool fIsOffline;

  1440.     bool fFirstIdle;

  1441.     int64_t fLastPingTime;

  1442. 

  1443.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CarlaEngineBridge)

  1444. };

  1445. 

  1446. // -----------------------------------------------------------------------

  1447. 

  1448. CarlaEngine* CarlaEngine::newBridge(const char* const audioPoolBaseName, const char* const rtClientBaseName, const char* const nonRtClientBaseName, const char* const nonRtServerBaseName)

  1449. {

  1450.     return new CarlaEngineBridge(audioPoolBaseName, rtClientBaseName, nonRtClientBaseName, nonRtServerBaseName);

  1451. }

  1452. 

  1453. // -----------------------------------------------------------------------

  1454. 

  1455. CARLA_BACKEND_END_NAMESPACE

  1456. 

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

  1458. 

  1459. #include "CarlaBridgeUtils.cpp"

  1460. 

  1461. // -----------------------------------------------------------------------