playmidi.h

MIDI解码程序(用VC编写)

/*
    TiMidity++ -- MIDI to WAVE converter and player
    Copyright (C) 1999-2004 Masanao Izumo <[e-mail]>
    Copyright (C) 1995 Tuukka Toivonen <[e-mail]>

    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; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

    playmidi.h
*/

#ifndef ___PLAYMIDI_H_
#define ___PLAYMIDI_H_

typedef struct {
  int32 time;
  uint8 type, channel, a, b;
} MidiEvent;

#define REVERB_MAX_DELAY_OUT (4 * play_mode->rate)

#define MIDI_EVENT_NOTE(ep) (ISDRUMCHANNEL((ep)->channel) ? (ep)->a : \
			     (((int)(ep)->a + note_key_offset + \
			       channel[ep->channel].key_shift) & 0x7f))

#define MIDI_EVENT_TIME(ep) ((int32)((ep)->time * midi_time_ratio + 0.5))

#define SYSEX_TAG 0xFF

/* Midi events */
enum midi_event_t
{
	ME_NONE,
	
	/* MIDI events */
	ME_NOTEOFF,
	ME_NOTEON,
	ME_KEYPRESSURE,
	ME_PROGRAM,
	ME_CHANNEL_PRESSURE,
	ME_PITCHWHEEL,
	
	/* Controls */
	ME_TONE_BANK_MSB,
	ME_TONE_BANK_LSB,
	ME_MODULATION_WHEEL,
	ME_BREATH,
	ME_FOOT,
	ME_MAINVOLUME,
	ME_BALANCE,
	ME_PAN,
	ME_EXPRESSION,
	ME_SUSTAIN,
	ME_PORTAMENTO_TIME_MSB,
	ME_PORTAMENTO_TIME_LSB,
	ME_PORTAMENTO,
	ME_PORTAMENTO_CONTROL,
	ME_DATA_ENTRY_MSB,
	ME_DATA_ENTRY_LSB,
	ME_SOSTENUTO,
	ME_SOFT_PEDAL,
	ME_LEGATO_FOOTSWITCH,
	ME_HOLD2,
	ME_HARMONIC_CONTENT,
	ME_RELEASE_TIME,
	ME_ATTACK_TIME,
	ME_BRIGHTNESS,
	ME_REVERB_EFFECT,
	ME_TREMOLO_EFFECT,
	ME_CHORUS_EFFECT,
	ME_CELESTE_EFFECT,
	ME_PHASER_EFFECT,
	ME_RPN_INC,
	ME_RPN_DEC,
	ME_NRPN_LSB,
	ME_NRPN_MSB,
	ME_RPN_LSB,
	ME_RPN_MSB,
	ME_ALL_SOUNDS_OFF,
	ME_RESET_CONTROLLERS,
	ME_ALL_NOTES_OFF,
	ME_MONO,
	ME_POLY,
	
	/* TiMidity Extensionals */
#if 0
	ME_VOLUME_ONOFF,		/* Not supported */
#endif
	ME_SCALE_TUNING,		/* Scale tuning */
	ME_BULK_TUNING_DUMP,	/* Bulk tuning dump */
	ME_SINGLE_NOTE_TUNING,	/* Single-note tuning */
	ME_RANDOM_PAN,
	ME_SET_PATCH,			/* Install special instrument */
	ME_DRUMPART,
	ME_KEYSHIFT,
	ME_PATCH_OFFS,			/* Change special instrument sample position
							 * Channel, LSB, MSB
							 */
	
	/* Global channel events */
	ME_TEMPO,
	ME_CHORUS_TEXT,
	ME_LYRIC,
	ME_GSLCD,				/* GS L.C.D. Exclusive message event */
	ME_MARKER,
	ME_INSERT_TEXT,			/* for SC */
	ME_TEXT,
	ME_KARAOKE_LYRIC,		/* for KAR format */
	ME_MASTER_VOLUME,
	ME_RESET,				/* Reset and change system mode */
	ME_NOTE_STEP,
	
	ME_TIMESIG,				/* Time signature */
	ME_KEYSIG,				/* Key signature */
	ME_TEMPER_KEYSIG,		/* Temperament key signature */
	ME_TEMPER_TYPE,			/* Temperament type */
	ME_MASTER_TEMPER_TYPE,	/* Master temperament type */
	ME_USER_TEMPER_ENTRY,	/* User-defined temperament entry */
	
	ME_SYSEX_LSB,			/* Universal system exclusive message (LSB) */
	ME_SYSEX_MSB,			/* Universal system exclusive message (MSB) */
	ME_SYSEX_GS_LSB,		/* GS system exclusive message (LSB) */
	ME_SYSEX_GS_MSB,		/* GS system exclusive message (MSB) */
	ME_SYSEX_XG_LSB,		/* XG system exclusive message (LSB) */
	ME_SYSEX_XG_MSB,		/* XG system exclusive message (MSB) */
	
	ME_WRD,					/* for MIMPI WRD tracer */
	ME_SHERRY,				/* for Sherry WRD tracer */
	ME_BARMARKER,
	ME_STEP,				/* for Metronome */
	
	ME_LAST = 254,			/* Last sequence of MIDI list.
							 * This event is reserved for realtime player.
							 */
	ME_EOT = 255			/* End of MIDI.  Finish to play */
};

#define GLOBAL_CHANNEL_EVENT_TYPE(type)	\
	((type) == ME_NONE || (type) >= ME_TEMPO)

enum rpn_data_address_t /* NRPN/RPN */
{
    NRPN_ADDR_0108,
    NRPN_ADDR_0109,
    NRPN_ADDR_010A,
    NRPN_ADDR_0120,
    NRPN_ADDR_0121,
	NRPN_ADDR_0130,
	NRPN_ADDR_0131,
	NRPN_ADDR_0134,
	NRPN_ADDR_0135,
    NRPN_ADDR_0163,
    NRPN_ADDR_0164,
    NRPN_ADDR_0166,
    NRPN_ADDR_1400,
    NRPN_ADDR_1500,
    NRPN_ADDR_1600,
    NRPN_ADDR_1700,
    NRPN_ADDR_1800,
    NRPN_ADDR_1900,
    NRPN_ADDR_1A00,
    NRPN_ADDR_1C00,
    NRPN_ADDR_1D00,
    NRPN_ADDR_1E00,
    NRPN_ADDR_1F00,
    NRPN_ADDR_3000,
    NRPN_ADDR_3100,
    NRPN_ADDR_3400,
    NRPN_ADDR_3500,
    RPN_ADDR_0000,
    RPN_ADDR_0001,
    RPN_ADDR_0002,
    RPN_ADDR_0003,
    RPN_ADDR_0004,
	RPN_ADDR_0005,
    RPN_ADDR_7F7F,
    RPN_ADDR_FFFF,
    RPN_MAX_DATA_ADDR
};

#define RX_PITCH_BEND (1<<0)
#define RX_CH_PRESSURE (1<<1)
#define RX_PROGRAM_CHANGE (1<<2)
#define RX_CONTROL_CHANGE (1<<3)
#define RX_POLY_PRESSURE (1<<4)
#define RX_NOTE_MESSAGE (1<<5)
#define RX_RPN (1<<6)
#define RX_NRPN (1<<7)
#define RX_MODULATION (1<<8)
#define RX_VOLUME (1<<9)
#define RX_PANPOT (1<<10)
#define RX_EXPRESSION (1<<11)
#define RX_HOLD1 (1<<12)
#define RX_PORTAMENTO (1<<13)
#define RX_SOSTENUTO (1<<14)
#define RX_SOFT (1<<15)
#define RX_NOTE_ON (1<<16)
#define RX_NOTE_OFF (1<<17)
#define RX_BANK_SELECT (1<<18)
#define RX_BANK_SELECT_LSB (1<<19)

enum {
	EG_ATTACK = 0,
	EG_DECAY = 2,
	EG_DECAY1 = 1,
	EG_DECAY2 = 2,
	EG_RELEASE = 3,
	EG_NULL = 5,
	EG_GUS_ATTACK = 0,
	EG_GUS_DECAY = 1,
	EG_GUS_SUSTAIN = 2,
	EG_GUS_RELEASE1 = 3,
	EG_GUS_RELEASE2 = 4,
	EG_GUS_RELEASE3 = 5,
	EG_SF_ATTACK = 0,
	EG_SF_HOLD = 1,
	EG_SF_DECAY = 2,
	EG_SF_RELEASE = 3,
};

#ifndef PART_EQ_XG
#define PART_EQ_XG
/*! shelving filter */
typedef struct {
	double freq, gain, q;
	int32 x1l, x2l, y1l, y2l, x1r, x2r, y1r, y2r;
	int32 a1, a2, b0, b1, b2;
} filter_shelving;

/*! Part EQ (XG) */
struct part_eq_xg {
	int8 bass, treble, bass_freq, treble_freq;
	filter_shelving basss, trebles;
	int8 valid;
};
#endif /* PART_EQ_XG */

typedef struct {
  int16 val;
  int8 pitch;	/* in +-semitones [-24, 24] */
  int16 cutoff;	/* in +-cents [-9600, 9600] */
  float amp;	/* [-1.0, 1.0] */
  /* in GS, LFO1 means LFO for voice 1, LFO2 means LFO for voice2.
     LFO2 is not supported. */
  float lfo1_rate, lfo2_rate;	/* in +-Hz [-10.0, 10.0] */
  int16 lfo1_pitch_depth, lfo2_pitch_depth;	/* in cents [0, 600] */
  int16 lfo1_tvf_depth, lfo2_tvf_depth;	/* in cents [0, 2400] */
  float lfo1_tva_depth, lfo2_tva_depth;	/* [0, 1.0] */
  int8 variation_control_depth, insertion_control_depth;
} midi_controller;

struct DrumPartEffect
{
	int32 *buf;
	int8 note, reverb_send, chorus_send, delay_send;
};

struct DrumParts
{
    int8 drum_panning;
    int32 drum_envelope_rate[6]; /* drum instrument envelope */
    int8 pan_random;    /* flag for drum random pan */
	float drum_level;

	int8 chorus_level, reverb_level, delay_level, coarse, fine,
		play_note, drum_cutoff_freq, drum_resonance;
	int32 rx;
};

typedef struct {
  int8	bank_msb, bank_lsb, bank, program, volume,
	expression, sustain, panning, mono, portamento,
	key_shift, loop_timeout;

  /* chorus, reverb... Coming soon to a 300-MHz, eight-way superscalar
     processor near you */
  int8	chorus_level,	/* Chorus level */
	reverb_level;	/* Reverb level. */
  int	reverb_id;	/* Reverb ID used for reverb optimize implementation
			   >=0 reverb_level
			   -1: DEFAULT_REVERB_SEND_LEVEL
			   */
  int8 delay_level;	/* Delay Send Level */
  int8 eq_gs;	/* EQ ON/OFF (GS) */
  int8 insertion_effect;

  /* Special sample ID. (0 means Normal sample) */
  uint8 special_sample;

  int pitchbend;

  FLOAT_T
    pitchfactor; /* precomputed pitch bend factor to save some fdiv's */