Carla/source/utils/CarlaBridgeDefines.hpp

/*
 * Carla Bridge definitions
 * Copyright (C) 2013-2019 Filipe Coelho <falktx@falktx.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * For a full copy of the GNU General Public License see the doc/GPL.txt file.
 */

#ifndef CARLA_BRIDGE_DEFINES_HPP_INCLUDED
#define CARLA_BRIDGE_DEFINES_HPP_INCLUDED

#include "CarlaRingBuffer.hpp"

#define CARLA_PLUGIN_BRIDGE_API_VERSION 6

// -------------------------------------------------------------------------------------------------------------------

// Server sends these to client during RT
enum PluginBridgeRtClientOpcode {
    kPluginBridgeRtClientNull = 0,
    kPluginBridgeRtClientSetAudioPool,            // ulong/ptr
    kPluginBridgeRtClientSetBufferSize,           // uint
    kPluginBridgeRtClientSetSampleRate,           // double
    kPluginBridgeRtClientSetOnline,               // bool
    kPluginBridgeRtClientControlEventParameter,   // uint/frame, byte/chan, ushort, float
    kPluginBridgeRtClientControlEventMidiBank,    // uint/frame, byte/chan, ushort
    kPluginBridgeRtClientControlEventMidiProgram, // uint/frame, byte/chan, ushort
    kPluginBridgeRtClientControlEventAllSoundOff, // uint/frame, byte/chan
    kPluginBridgeRtClientControlEventAllNotesOff, // uint/frame, byte/chan
    kPluginBridgeRtClientMidiEvent,               // uint/frame, byte/port, byte/size, byte[]/data
    kPluginBridgeRtClientProcess,                 // uint/frames
    kPluginBridgeRtClientQuit
};

// Server sends these to client during non-RT
enum PluginBridgeNonRtClientOpcode {
    kPluginBridgeNonRtClientNull = 0,
    kPluginBridgeNonRtClientVersion,                 // uint
    kPluginBridgeNonRtClientPing,
    kPluginBridgeNonRtClientPingOnOff,               // bool
    kPluginBridgeNonRtClientActivate,
    kPluginBridgeNonRtClientDeactivate,
    kPluginBridgeNonRtClientInitialSetup,            // uint, double
    kPluginBridgeNonRtClientSetParameterValue,       // uint, float
    kPluginBridgeNonRtClientSetParameterMidiChannel, // uint, byte
    kPluginBridgeNonRtClientSetParameterMidiCC,      // uint, short
    kPluginBridgeNonRtClientSetProgram,              // int
    kPluginBridgeNonRtClientSetMidiProgram,          // int
    kPluginBridgeNonRtClientSetCustomData,           // uint/size, str[], uint/size, str[], uint/size, str[]
    kPluginBridgeNonRtClientSetChunkDataFile,        // uint/size, str[] (filename, base64 content)
    kPluginBridgeNonRtClientSetCtrlChannel,          // short
    kPluginBridgeNonRtClientSetOption,               // uint/option, bool
    kPluginBridgeNonRtClientGetParameterText,        // uint
    kPluginBridgeNonRtClientPrepareForSave,
    kPluginBridgeNonRtClientRestoreLV2State,
    kPluginBridgeNonRtClientShowUI,
    kPluginBridgeNonRtClientHideUI,
    kPluginBridgeNonRtClientUiParameterChange,       // uint, float
    kPluginBridgeNonRtClientUiProgramChange,         // uint
    kPluginBridgeNonRtClientUiMidiProgramChange,     // uint
    kPluginBridgeNonRtClientUiNoteOn,                // byte, byte, byte
    kPluginBridgeNonRtClientUiNoteOff,               // byte, byte
    kPluginBridgeNonRtClientQuit
};

// Client sends these to server during non-RT
enum PluginBridgeNonRtServerOpcode {
    kPluginBridgeNonRtServerNull = 0,
    kPluginBridgeNonRtServerPong,
    kPluginBridgeNonRtServerPluginInfo1,        // uint/category, uint/hints, uint/optionsAvailable, uint/optionsEnabled, long/uniqueId
    kPluginBridgeNonRtServerPluginInfo2,        // uint/size, str[] (realName), uint/size, str[] (label), uint/size, str[] (maker), uint/size, str[] (copyright)
    kPluginBridgeNonRtServerAudioCount,         // uint/ins, uint/outs
    kPluginBridgeNonRtServerMidiCount,          // uint/ins, uint/outs
    kPluginBridgeNonRtServerCvCount,            // uint/ins, uint/outs
    kPluginBridgeNonRtServerParameterCount,     // uint/count
    kPluginBridgeNonRtServerProgramCount,       // uint/count
    kPluginBridgeNonRtServerMidiProgramCount,   // uint/count
    kPluginBridgeNonRtServerPortName,           // byte/type, uint/index, uint/size, str[] (name)
    kPluginBridgeNonRtServerParameterData1,     // uint/index, int/rindex, uint/type, uint/hints, short/cc
    kPluginBridgeNonRtServerParameterData2,     // uint/index, uint/size, str[] (name), uint/size, str[] (symbol), uint/size, str[] (unit)
    kPluginBridgeNonRtServerParameterRanges,    // uint/index, float/def, float/min, float/max, float/step, float/stepSmall, float/stepLarge
    kPluginBridgeNonRtServerParameterValue,     // uint/index, float/value
    kPluginBridgeNonRtServerParameterValue2,    // uint/index, float/value (used for init/output parameters only, don't resend values)
    kPluginBridgeNonRtServerParameterTouch,     // uint/index, bool/touch
    kPluginBridgeNonRtServerDefaultValue,       // uint/index, float/value
    kPluginBridgeNonRtServerCurrentProgram,     // int/index
    kPluginBridgeNonRtServerCurrentMidiProgram, // int/index
    kPluginBridgeNonRtServerProgramName,        // uint/index, uint/size, str[] (name)
    kPluginBridgeNonRtServerMidiProgramData,    // uint/index, uint/bank, uint/program, uint/size, str[] (name)
    kPluginBridgeNonRtServerSetCustomData,      // uint/size, str[], uint/size, str[], uint/size, str[]
    kPluginBridgeNonRtServerSetChunkDataFile,   // uint/size, str[] (filename, base64 content)
    kPluginBridgeNonRtServerSetLatency,         // uint
    kPluginBridgeNonRtServerSetParameterText,   // uint/index, uint/size, str[] (name)
    kPluginBridgeNonRtServerReady,
    kPluginBridgeNonRtServerSaved,
    kPluginBridgeNonRtServerUiClosed,
    kPluginBridgeNonRtServerError               // uint/size, str[]
};

// used for kPluginBridgeNonRtServerPortName
enum PluginBridgePortType {
    kPluginBridgePortNull = 0,
    kPluginBridgePortAudioInput,
    kPluginBridgePortAudioOutput,
    kPluginBridgePortCvInput,
    kPluginBridgePortCvOutput,
    kPluginBridgePortMidiInput,
    kPluginBridgePortMidiOutput,
    kPluginBridgePortTypeCount
};

enum PluginBridgeTimeInfoFlags {
    kPluginBridgeTimeInfoValidBBT = 0x1
};

// -------------------------------------------------------------------------------------------------------------------

struct BridgeSemaphore {
    union {
        void* server;
        char _padServer[64];
    };
    union {
        void* client;
        char _padClient[64];
    };
};

// NOTE: needs to be 64bit aligned
struct BridgeTimeInfo {
    uint64_t playing;
    uint64_t frame;
    uint64_t usecs;
    uint32_t validFlags;
    uint32_t unused;
    // bbt
    int32_t bar, beat;
    float beatsPerBar, beatType;
    double tick, barStartTick, ticksPerBeat, beatsPerMinute;
};

// -------------------------------------------------------------------------------------------------------------------

static const std::size_t kBridgeRtClientDataMidiOutSize = 511*4;
static const std::size_t kBridgeBaseMidiOutHeaderSize   = 6U /* time, port and size */;

// Server => Client RT
struct BridgeRtClientData {
    BridgeSemaphore sem;
    BridgeTimeInfo timeInfo;
    SmallStackBuffer ringBuffer;
    uint8_t midiOut[kBridgeRtClientDataMidiOutSize];
    uint32_t procFlags;
};

// Server => Client Non-RT
struct BridgeNonRtClientData {
    BigStackBuffer ringBuffer;
};

// Client => Server Non-RT
struct BridgeNonRtServerData {
    HugeStackBuffer ringBuffer;
};

// -------------------------------------------------------------------------------------------------------------------

#endif // CARLA_BRIDGE_DEFINES_HPP_INCLUDED