non/sequencer/src/midievent.H

/*******************************************************************************/
/* Copyright (C) 2008 Jonathan Moore Liles                                     */
/*                                                                             */
/* 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 (at your      */
/* option) 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.                                                               */
/*                                                                             */
/* You should have received a copy of the GNU General Public License along     */
/* with This program; see the file COPYING.  If not,write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
/*******************************************************************************/

#pragma once

#include "common.h"


/* raw MIDI event + timestamp */
class midievent
{

public:

    class sysex {
        size_t _size, _alloc;
        byte_t *_data;

    public:

        sysex ( void );
        ~sysex ( void );

        void append ( byte_t *data, size_t size );
        const byte_t * data ( void ) const;
        long size ( void ) const;

    };

private:

    sysex *_sysex;

    tick_t _timestamp;                                          /* in ticks */
    struct {
        byte_t status,                                          /* full status byte */
            lsb,                                                /* data 1 */
            msb;                                                /* data 2 */
    } _data;

public:

    static inline int
    event_size ( byte_t op )
        {
            switch ( op )
            {
                case NOTE_ON:        case NOTE_OFF: case AFTERTOUCH:
                case CONTROL_CHANGE: case PITCH_WHEEL:
                    return 3;
                case PROGRAM_CHANGE: case CHANNEL_PRESSURE:
                    return 2;
                default:
                    return 1;
            }
        };

    /* define MIDI status bytes */
    enum {
        STATUS_BIT       = 0x80,
        NOTE_OFF         = 0x80,
        NOTE_ON          = 0x90,
        AFTERTOUCH       = 0xA0,
        CONTROL_CHANGE   = 0xB0,
        PROGRAM_CHANGE   = 0xC0,
        CHANNEL_PRESSURE = 0xD0,
        PITCH_WHEEL      = 0xE0,
        CLEAR_CHAN_MASK  = 0xF0,
        MIDI_CLOCK       = 0xF8,
        SYSEX            = 0xF0,
        SYSEX_END        = 0xF7,
        META             = 0xFF
    };

    midievent ( void );
    virtual ~midievent ( void );

    tick_t timestamp ( void ) const;
    void timestamp ( tick_t time );
    void status ( byte_t status );
    byte_t status ( void ) const;
    void channel ( byte_t channel );
    byte_t channel ( void ) const;
    byte_t opcode ( void ) const;
    void opcode ( byte_t o );
    void lsb ( byte_t n );
    void msb ( byte_t n );
    int lsb ( void ) const;
    int msb ( void ) const;
    int pitch ( void ) const;
    void pitch ( int n );
    void data ( byte_t D1, byte_t D2 );
    void data ( byte_t *D1, byte_t *D2 ) const;
    void raw ( byte_t *p, int l) const;
    int size ( void ) const;
    void note_velocity ( int vel );
    bool is_note_on ( void ) const;
    bool is_note_off ( void ) const;
    virtual unsigned char note ( void ) const;
    virtual void note ( char note );
    unsigned char note_velocity ( void ) const;
    bool is_same_note ( midievent * e ) const;
    const char * name ( void ) const;
    int name ( const char *name ) const;
    void print ( void ) const;
    void pretty_print ( void ) const;

    bool operator< ( const midievent &rhs ) const;
    bool operator>= ( const midievent &rhs ) const;

    bool operator== ( const midievent &rhs ) const;

};


/**********************/
/* Inlined accessors  */
/**********************/


inline tick_t
midievent::timestamp ( void ) const
{
    return _timestamp;
}

inline void
midievent::timestamp ( tick_t time )
{
    _timestamp = time;
}

inline void
midievent::status ( byte_t status )
{
    _data.status = status;
}

inline byte_t
midievent::status ( void ) const
{
    return _data.status;
}

inline void
midievent::channel ( byte_t channel )
{
    _data.status = (_data.status & 0xF0) | (channel & 0x0F);
}

inline byte_t
midievent::channel ( void ) const
{
    return _data.status & 0x0F;
}

inline byte_t
midievent::opcode ( void ) const
{
    return _data.status & 0xF0;
}


inline void
midievent::opcode ( byte_t opcode )
{
    _data.status = (_data.status & 0x0F) | (opcode & 0xF0);
}

inline void
midievent::lsb ( byte_t n )
{
    _data.lsb = n & 0x7F;
}

inline void
midievent::msb ( byte_t n )
{
    _data.msb = n & 0x7F;
}

inline int
midievent::lsb ( void ) const
{
    return _data.lsb;
}

inline int
midievent::msb ( void ) const
{
    return _data.msb;
}

inline bool
midievent::is_note_on ( void ) const
{
    return (opcode() == NOTE_ON);
}

inline bool
midievent::is_note_off ( void ) const
{
    return (opcode() == NOTE_OFF);
}

inline bool
midievent::operator< ( const midievent &rhs ) const
{
    return _timestamp < rhs._timestamp;
}

inline bool
midievent::operator>= ( const midievent &rhs ) const
{
    return _timestamp >= rhs._timestamp;
}