midi_UsbDefs.h

Go to the documentation of this file.

#pragma once

#include "midi_Defs.h"

BEGIN_MIDI_NAMESPACE

struct CodeIndexNumbers
{
    enum
    {
        reserved                = 0x00,
        misc                    = reserved,

        cableEvent              = 0x01,
        systemCommon2Bytes      = 0x02,
        systemCommon3Bytes      = 0x03,

        sysExStart              = 0x04,
        sysExContinue           = sysExStart,

        systemCommon1Byte       = 0x05,
        sysExEnds1Byte          = systemCommon1Byte,

        sysExEnds2Bytes         = 0x06,
        sysExEnds3Bytes         = 0x07,
        noteOff                 = 0x08,
        noteOn                  = 0x09,
        polyPressure            = 0x0A,
        controlChange           = 0x0B,
        programChange           = 0x0C,
        channelPressure         = 0x0D,
        pitchBend               = 0x0E,
        singleByte              = 0x0F,
    };

    static inline byte getSize(byte inCodeIndexNumber)
    {
        switch (inCodeIndexNumber)
        {
            case noteOn:
            case noteOff:
            case controlChange:
            case pitchBend:
            case polyPressure:
            case systemCommon3Bytes:
            case sysExEnds3Bytes:
            case sysExStart:
                return 3;

            case programChange:
            case channelPressure:
            case systemCommon2Bytes:
            case sysExEnds2Bytes:
                return 2;

            case systemCommon1Byte:
            case singleByte:
                return 1;

            default:
                break;
        }
        return 0; // Can be any length (1, 2 or 3).
    }
};

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

struct UsbMidiEventPacket
{
public:
    inline UsbMidiEventPacket()
    {
        memset(mData, 0, 4 * sizeof(byte));
    }

public:
    inline void setHeader(byte inCableNumber, byte inCodeIndexNumber)
    {
        const byte msb = (0x0f & inCableNumber) << 4;
        const byte lsb = (0x0f & inCodeIndexNumber);
        mData[0] = msb | lsb;
    }
    inline void setMidiData(const byte* inData)
    {
        mData[1] = *inData++;
        mData[2] = *inData++;
        mData[3] = *inData;
    }
    inline byte getCableNumber() const
    {
        return mData[0] >> 4;
    }
    inline byte getCodeIndexNumber() const
    {
        return mData[0] & 0x0f;
    }
    inline const byte* getMidiData() const
    {
        return mData + 1;
    }
    inline byte* getMidiData()
    {
        return mData + 1;
    }
    inline UsbMidiEventPacket& operator=(const byte* inData)
    {
        mData[0] = *inData++;
        setMidiData(inData);
        return *this;
    }

public:
    byte mData[4];
};

END_MIDI_NAMESPACE